CN110553060A

CN110553060A - Water treatment system, water treatment method and plane valve thereof

Info

Publication number: CN110553060A
Application number: CN201910378851.2A
Authority: CN
Inventors: 胡霄宗; 胡继宗
Original assignee: Ningbo Coman Environmental Protection Technology Co Ltd
Current assignee: Ningbo Coman Environmental Protection Technology Co Ltd
Priority date: 2018-05-30
Filing date: 2019-05-08
Publication date: 2019-12-10
Also published as: CN210770425U

Abstract

The invention provides a water treatment system, wherein the water treatment system comprises a first water treatment device, a second water treatment device and a plane valve, wherein the valve body forms an inner cavity, a first opening, a second opening, a third opening, a fourth opening, a fifth opening and a sixth opening, the sixth opening of the valve body is communicated with the inner cavity, wherein the first opening of the valve body is communicated with the first communication opening of the first water treatment device, the second opening of the valve body is respectively communicated with the second communicating opening of the first water treatment device and the first communicating opening of the second water treatment device, the third opening of the valve body is communicated with the second communicating opening of the second water treatment device, wherein at least one of the first opening, the second opening, the third opening, the fourth opening and the fifth opening of the valve body is selectively communicated with the sixth opening.

Description

Water treatment system, water treatment method and plane valve thereof

Technical Field

The invention relates to the technical field of water treatment, in particular to a water treatment system, wherein the water treatment system can perform multi-stage treatment on water, such as secondary purification treatment on purified water, so as to obtain cleaner purified water. Further, the water treatment system can realize multi-stage treatment of raw water (or water to be treated) by controlling a single control valve, such as a fluid valve. Preferably, the control valve of the water treatment system of the present invention is a flat valve.

Technical Field

With the increasing health concerns and concerns about water pollution, water treatment machines or systems have become common household appliances. Water treatment machines, especially household water treatment machines, such as central water purifiers, water softeners and the like are often installed in kitchens to treat water and obtain cleaner water.

In order to obtain sufficiently clean water, such as water more suitable for direct drinking, the existing water treatment system often has more than one filter element, for example, many households may install a prefilter suitable for filtering larger impurities at the upstream of the ultrafiltration water purifier, or install an activated carbon filter element at the downstream of the ultrafiltration water purifier, so as to improve the taste of the purified water. For another example, a pre-filter is often installed upstream of a water softener (or a purification-softening water treatment system) that softens water to remove larger impurities. However, most of the existing water treatment machines or water treatment systems having a composite water treatment function are water treatment machines that purify water only, such as an activated carbon-ultrafiltration composite water purification system, an ultrafiltration-RO membrane composite water purification system, a PP cotton-activated carbon composite water purification system, and the like, and flow control of water flow and water treatment are mostly realized by a plurality of control valves. The main reason is that when treating water, water treatment machines often need to provide not only water treatment functions, but also other functions, such as backwashing of the filter cartridge, particularly of a pre-filter, after a period of use. However, these additional but important functions of a water treatment system involve the control of water flow and the creation of complex water paths. In order to realize the control of a complex water path, most of the existing composite water treatment systems are provided with more than two control valves, which finally leads to the overstaffed, large volume and poor use experience of the whole water treatment system mechanism. Furthermore, water treatment machines, especially domestic water treatment machines, are typically mounted under the counter of a kitchen, such as under a hand sink. The existing composite water treatment system is huge in size, occupies too much space and brings great inconvenience to the installation of a user. Needless to say, maintenance and filter cartridge replacement in the event of a water treatment system failure.

Disclosure of Invention

The main advantage of the present invention is that it provides a water treatment system having at least two water treatment devices, such as an ultrafiltration cartridge, an activated carbon cartridge, a screen filter, a lamination filter, a softening tank with a built-in softening resin, to effect treatment of raw water or water to be treated, thereby providing the treated water to a user according to the user's needs.

Another advantage of the present invention is that it provides a water treatment system having a planar valve, wherein each of the water treatment devices is in communication with the planar valve via a corresponding water path, thereby providing control of the water treatment water path.

Another advantage of the present invention is that it provides a water treatment system wherein the planar valve of the water treatment system not only controls the treatment of water, but also performs other functions such as forward washing or backwashing a water treatment device individually.

Another advantage of the present invention is that it provides a water treatment system wherein the flat valve of the water treatment system can continuously supply water while controlling the flow of water to effect a forward or reverse wash of a water treatment device to avoid interruption of the water supply.

Another advantage of the present invention is that it provides a water treatment system wherein at least one of the water treatment devices of the water treatment system is a water purification device to separately and/or simultaneously effect purification and other treatments, such as softening, of raw water or water to be treated.

Another advantage of the present invention is that it provides a water treatment system wherein the water purification device and the water softening device of the water treatment system are connected in series and the water purification device of the water treatment system is located upstream of the water softening device, thereby enabling the water softening device to treat purified water from the water purification device to obtain clean softened water.

Another advantage of the present invention is that it provides a water treatment system in which the water purification device, the water softening device and the flat valve of the water treatment system are communicated through respective water paths, thereby achieving control of the water purification path and the water softening path and purification and softening treatment of water. In particular, the purified water treated by the water purification device flows to the purified water passage and the water inlet of the water softening device, respectively, to supply the purified water to the purified water passage and the water softening device separately or simultaneously.

Another advantage of the present invention is that it provides a water treatment system, in which a flat valve of the water treatment system can simultaneously control the flow of water in a purification water path and the flow of water in a softening water path to flow in different directions without interfering with each other, to control a purification device and a softening water device of the water treatment system to separately and/or simultaneously perform purification and softening treatment of raw water or water to be treated, thereby separately and/or simultaneously providing purified and softened water to a user according to user's needs. In other words, the planar valve of the water treatment system enables the water treatment system of the present invention to simultaneously achieve control of both the purification circuit and the softening circuit through a single planar valve.

Another advantage of the present invention is that it provides a water treatment system suitable for purifying and softening raw water, which does not require precise parts and complicated structure, and is simple in manufacturing process and low in cost.

Additional advantages and features of the invention will be set forth in the detailed description which follows and in part will be apparent from the description, or may be learned by practice of the invention as set forth hereinafter.

In accordance with the present invention, the foregoing and other objects and advantages are achieved by a water treatment system comprising:

A first water treatment device, wherein the first water treatment device has a first communication opening and a second communication opening;

A second water treatment device, wherein the second water treatment device has a first communication opening and a second communication opening; and

A planar valve, wherein the planar valve comprises a valve body having a first opening, a second opening, a third opening, a fourth opening, a fifth opening and a sixth opening, wherein the first opening of the valve body is in communication with the first communication opening of the first water treatment device, the second opening of the valve body is in communication with the second communication opening of the first water treatment device and the first communication opening of the second water treatment device, respectively, the third opening of the valve body is in communication with the second communication opening of the second water treatment device, and wherein the sixth opening of the valve body is in selective communication with at least one of the first opening, the second opening, the third opening, the fourth opening and the fifth opening.

In accordance with another aspect of the present invention, there is further provided a flat valve for a water treatment system, wherein the water treatment system comprises a first water treatment device having a first communication opening and a second communication opening, and a second water treatment device comprising a first communication opening and a second communication opening, wherein the flat valve comprises a valve body, wherein the valve body has a first opening, a second opening, a third opening, a fourth opening, a fifth opening, and a sixth opening, wherein the first opening of the valve body communicates with the first communication opening of the first water treatment device, and the second opening of the valve body communicates with the second communication opening of the first water treatment device and the first communication opening of the second water treatment device, respectively, the third opening of the valve body is communicated with the second conducting opening of the second water treatment device, wherein the sixth opening of the valve body is selectively communicated with at least one of the first opening, the second opening, the third opening, the fourth opening and the fifth opening.

further objects and advantages of the invention will be fully apparent from the ensuing description and drawings.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description, the accompanying drawings and the claims.

Drawings

FIG. 1 is a perspective view of a water treatment system according to a first preferred embodiment of the present invention.

FIG. 2 is an assembled view of the water treatment system according to the first preferred embodiment of the present invention.

FIG. 3 is a perspective view of the flat valve of the water treatment system according to the first preferred embodiment of the present invention.

FIG. 4 is an assembled view of the above-mentioned flat valve of the water treatment system according to the first preferred embodiment of the present invention.

FIG. 5A is a perspective view of the valve body of the flat valve of the water treatment system according to the first preferred embodiment of the present invention.

FIG. 5B is another perspective view of the valve body of the flat valve of the water treatment system according to the first preferred embodiment of the present invention.

FIG. 5C is a perspective view of the valve body and the stationary plate of the flat valve of the water treatment system according to the first preferred embodiment of the present invention.

FIG. 5D is a perspective view of the movable valve plate, the fixed valve plate and the valve body of the flat valve of the water treatment system according to the first preferred embodiment of the present invention.

FIG. 6 is a sectional view of the above-mentioned planar valve of the water treatment system according to the first preferred embodiment of the present invention, in which the ninth passage and the seventh opening are shown to communicate with each other.

FIG. 7A is a perspective view of the stationary plate of the flat valve of the water treatment system according to the first preferred embodiment of the present invention.

FIG. 7B is a perspective view of the movable valve plate of the flat valve of the water treatment system according to the first preferred embodiment of the present invention.

FIG. 7C is a top view of the stationary plate of the flat valve of the water treatment system according to the first preferred embodiment of the present invention.

FIG. 7D is a top view of the movable valve plate of the planar valve of the water treatment system according to the first preferred embodiment of the present invention.

FIG. 7E is a bottom view of the stationary plate of the flat valve of the water treatment system according to the first preferred embodiment of the present invention.

FIG. 7F is a bottom view of the movable valve plate of the flat valve of the water treatment system according to the first preferred embodiment of the present invention.

FIG. 8A is another sectional view of the planar valve of the water treatment system according to the first preferred embodiment of the present invention, wherein the planar valve of the water treatment system is shown in a first operational position.

FIG. 8B is another sectional view of the planar valve of the water treatment system according to the first preferred embodiment of the present invention, wherein the planar valve of the water treatment system is shown in the first operational position.

FIG. 8C is another sectional view of the planar valve of the water treatment system according to the first preferred embodiment of the present invention, wherein the planar valve of the water treatment system is shown in the first operational position.

FIG. 8D is another sectional view of the flat valve of the water treatment system according to the first preferred embodiment of the present invention, wherein the flat valve of the water treatment system is shown in the first working position.

FIG. 9A is another sectional view of the planar valve of the water treatment system according to the first preferred embodiment of the present invention, wherein the planar valve of the water treatment system is shown in a second operational position.

FIG. 9B is another sectional view of the flat valve of the water treatment system according to the first preferred embodiment of the present invention, wherein the flat valve of the water treatment system is shown in the second working position.

FIG. 10A is another sectional view of the planar valve of the water treatment system according to the first preferred embodiment of the present invention, wherein the planar valve of the water treatment system is shown in a third operational position.

FIG. 10B is another sectional view of the flat valve of the water treatment system according to the first preferred embodiment of the present invention, wherein the flat valve of the water treatment system is shown in the third operation position.

FIG. 11 is another sectional view of the flat valve of the water treatment system according to the first preferred embodiment of the present invention, wherein the flat valve of the water treatment system is shown in a fourth operating position.

FIG. 12A is another sectional view of the planar valve of the water treatment system according to the first preferred embodiment of the present invention, wherein the planar valve of the water treatment system is shown in a fifth operational position.

FIG. 12B is another sectional view of the flat valve of the water treatment system according to the first preferred embodiment of the present invention, wherein the flat valve of the water treatment system is shown in the fifth operation position.

Fig. 13A is a schematic structural view of the water treatment system according to the first preferred embodiment of the present invention, wherein the water treatment system is shown in a purification (or purification-softening) operation position, and the arrows are in the water flow direction.

FIG. 13B is another schematic view of the water treatment system according to the first preferred embodiment of the present invention, wherein the water treatment system is shown in the second filter element (softening filter element) backwashing operation position, and the arrows are directed to the water flow direction.

FIG. 13C is another schematic view of the water treatment system according to the first preferred embodiment of the present invention, wherein the water treatment system is shown in the backwashing position of the first filter element (purification filter element), and the arrows are directed to the water flow direction.

FIG. 13D is another schematic view of the water treatment system in accordance with the first preferred embodiment of the present invention, shown in the second filter element (softening filter element) normal washing position, with the arrows pointing in the direction of water flow.

FIG. 13E is another schematic diagram of the water treatment system according to the first preferred embodiment of the present invention, wherein the water treatment system is shown in the first filter element (purification filter element) normal washing position, and the arrows are in the water flow direction.

FIG. 14A is a schematic structural diagram of the stationary plate of the flat valve of the water treatment system according to the first preferred embodiment of the present invention.

Fig. 14B is a schematic structural diagram of the movable valve plate of the planar valve of the water treatment system according to the first preferred embodiment of the invention, wherein the broken line in the diagram shows the conducting channel of the movable valve plate.

FIG. 14C is an isometric view of the stationary plate of the planar valve of the water treatment system according to the first preferred embodiment of the present invention, wherein each passage is shown as being disposed at a specific isometric position of the stationary plate.

FIG. 14D is an isometric view of the movable plate of the planar valve of the water treatment system according to the first preferred embodiment of the present invention, wherein the view shows that each channel is disposed at a specific isometric position of the movable plate.

Fig. 15A is a schematic view of the communication between the passage of the movable plate and the passage of the fixed plate of the flat valve in the first working position of the flat valve of the water treatment system according to the first preferred embodiment of the present invention, wherein the hatched portion in the figure shows the passage of the movable plate of the flat valve.

Fig. 15B is a schematic view of the communication between the passage of the movable plate and the passage of the fixed plate of the flat valve in the second working position of the flat valve of the water treatment system according to the first preferred embodiment of the present invention, wherein the hatched portion in the figure shows the passage of the movable plate of the flat valve.

Fig. 15C is a schematic view of the communication between the passage of the movable plate and the passage of the fixed plate of the flat valve in the third operating position of the flat valve of the water treatment system according to the first preferred embodiment of the present invention, wherein the hatched portion in the figure shows the passage of the movable plate of the flat valve.

FIG. 15D is a schematic view of the communication between the passage of the movable plate and the passage of the fixed plate of the flat valve in the fourth operating position of the flat valve of the water treatment system according to the first preferred embodiment of the present invention, wherein the hatched portion in the figure shows the passage of the movable plate of the flat valve.

fig. 15E is a schematic view of the communication between the passage of the movable plate and the passage of the fixed plate of the flat valve in the fifth operating position of the flat valve of the water treatment system according to the first preferred embodiment of the present invention, wherein the hatched portion in the figure shows the passage of the movable plate of the flat valve.

FIG. 16A is a perspective view of the stationary plate of an alternative embodiment of the planar valve of the water treatment system according to the first preferred embodiment of the present invention.

FIG. 16B is a perspective view of the movable valve plate of the alternative embodiment of the planar valve of the water treatment system according to the first preferred embodiment of the present invention.

FIG. 16C is a top view of the stationary plate of the alternative implementation of the planar valve of the water treatment system according to the first preferred embodiment of the present invention.

FIG. 16D is a top view of the movable valve plate of the alternative embodiment of the planar valve of the water treatment system according to the first preferred embodiment of the present invention.

FIG. 16E is a bottom view of the stationary plate of the alternative implementation of the planar valve of the water treatment system according to the first preferred embodiment of the present invention.

FIG. 16F is a bottom view of the movable valve plate of the alternative embodiment of the planar valve of the water treatment system according to the first preferred embodiment of the present invention.

Fig. 17A is a schematic diagram of the water treatment system according to the first preferred embodiment of the present invention, wherein the water treatment system is shown in a purification (or purification-softening) operation position, and the arrows are in the water flow direction.

FIG. 17B is a schematic view of another alternative embodiment of the water treatment system according to the first preferred embodiment of the present invention, wherein the water treatment system is shown in a second filter (softening filter) backwashing operation position, in which the arrows indicate the water flow direction.

Fig. 17C is another schematic diagram of the alternative embodiment of the water treatment system according to the first preferred embodiment of the present invention, wherein the water treatment system is shown in the first filter element (purification filter element) backwashing operation position, and the arrows are directed to the water flow direction.

Fig. 17D is another schematic diagram of the alternative embodiment of the water treatment system in accordance with the first preferred embodiment of the present invention, shown in the second filter element (softening filter element) normal washing position, with the arrows pointing in the direction of water flow.

Fig. 17E is another schematic diagram of the alternative embodiment of the water treatment system according to the first preferred embodiment of the present invention, wherein the water treatment system is shown in the first filter element (purification filter element) normal washing position, and the arrows are in the water flow direction.

FIG. 18A is a schematic structural diagram of the fixed valve plate of the alternative embodiment of the planar valve of the water treatment system according to the first preferred embodiment of the present invention.

Fig. 18B is a schematic structural diagram of the movable valve plate of the planar valve of the water treatment system according to the first preferred embodiment of the invention, wherein the broken line in the diagram shows the conducting channel of the movable valve plate.

FIG. 18C is an isometric view of the fixed valve plate of the alternative embodiment of the planar valve of the water treatment system according to the first preferred embodiment of the present invention, wherein the figure shows that each channel is disposed at a specific isometric position of the fixed valve plate.

FIG. 18D is an isometric view of the movable valve plate of the alternative embodiment of the planar valve of the water treatment system according to the first preferred embodiment of the present invention, wherein the figure shows that each channel is disposed at a specific bisecting position of the movable valve plate.

Fig. 19A is a schematic view of the communication between the passage of the movable plate and the passage of the fixed plate of the planar valve in the first working position of the planar valve according to the alternative embodiment of the water treatment system of the present invention, wherein the hatched portion in the figure shows the passage of the movable plate of the planar valve.

Fig. 19B is a schematic view of the communication between the passage of the movable valve plate and the passage of the fixed valve plate of the planar valve in the second working position of the planar valve according to the alternative embodiment of the water treatment system of the present invention, wherein the hatched portion in the figure shows the passage of the movable valve plate of the planar valve.

Fig. 19C is a schematic view of the communication between the passage of the movable valve plate and the passage of the fixed valve plate of the planar valve in the third working position of the planar valve according to the alternative embodiment of the water treatment system of the present invention, wherein the hatched portion in the figure shows the passage of the movable valve plate of the planar valve.

FIG. 19D is the schematic view of the communication between the passage of the movable plate and the passage of the fixed plate of the flat valve in the fourth operating position of the flat valve according to the alternative embodiment of the present invention, wherein the hatched portion in the figure shows the passage of the movable plate of the flat valve.

FIG. 19E is the schematic view of the communication between the passage of the movable plate and the passage of the fixed plate of the planar valve in the fifth working position of the planar valve according to the alternative embodiment of the present invention, wherein the hatched portion in the figure shows the passage of the movable plate of the planar valve.

FIG. 20 is a perspective view of a water treatment system according to a second preferred embodiment of the present invention.

FIG. 21 is an assembled view of a water treatment system according to a second preferred embodiment of the present invention.

FIG. 22 is a perspective view of a planar valve of the water treatment system according to the second preferred embodiment of the present invention.

FIG. 23 is an assembled view of the flat valve of the water treatment system according to the second preferred embodiment of the present invention.

FIG. 24A is a perspective view of the valve body of the flat valve of the water treatment system according to the second preferred embodiment of the present invention.

FIG. 24B is another perspective view of the valve body of the flat valve of the water treatment system according to the second preferred embodiment of the present invention.

FIG. 24C is a perspective view of the valve body and the stationary plate of the flat valve of the water treatment system according to the second preferred embodiment of the present invention.

FIG. 24D is a perspective view of the movable valve plate, the fixed valve plate and the valve body of the flat valve of the water treatment system according to the second preferred embodiment of the present invention.

FIG. 25 is a sectional view of the above-mentioned planar valve of the water treatment system according to the second preferred embodiment of the present invention, in which the ninth passage and the seventh opening are shown to communicate with each other.

FIG. 26A is a perspective view of the stationary plate of the flat valve of the water treatment system according to the second preferred embodiment of the present invention.

FIG. 26B is a perspective view of the movable valve plate of the flat valve of the water treatment system according to the second preferred embodiment of the present invention.

FIG. 26C is a top view of the stationary plate of the flat valve of the water treatment system according to the second preferred embodiment of the present invention.

FIG. 26D is a top view of the movable plate of the flat valve of the water treatment system according to the second preferred embodiment of the present invention.

FIG. 26E is a bottom view of the stationary plate of the flat valve of the water treatment system according to the second preferred embodiment of the present invention.

FIG. 26F is a bottom view of the movable valve plate of the flat valve of the water treatment system according to the second preferred embodiment of the present invention.

FIG. 27A is another sectional view of the planar valve of the water treatment system according to the second preferred embodiment of the present invention, wherein the planar valve of the water treatment system is shown in a first operational position.

FIG. 27B is another sectional view of the planar valve of the water treatment system according to the second preferred embodiment of the present invention, wherein the planar valve of the water treatment system is shown in the first operational position.

FIG. 27C is another sectional view of the flat valve of the water treatment system according to the second preferred embodiment of the present invention, wherein the flat valve of the water treatment system is shown in the first operational position.

FIG. 27D is another sectional view of the flat valve of the water treatment system according to the second preferred embodiment of the present invention, wherein the flat valve of the water treatment system is shown in the first operational position.

FIG. 28A is another sectional view of the planar valve of the water treatment system according to the second preferred embodiment of the present invention, wherein the planar valve of the water treatment system is shown in a second operational position.

FIG. 28B is another sectional view of the flat valve of the water treatment system according to the second preferred embodiment of the present invention, wherein the flat valve of the water treatment system is shown in the second working position.

FIG. 29A is another sectional view of the planar valve of the water treatment system according to the second preferred embodiment of the present invention, wherein the planar valve of the water treatment system is shown in a third operational position.

FIG. 29B is another sectional view of the flat valve of the water treatment system according to the second preferred embodiment of the present invention, wherein the flat valve of the water treatment system is shown in the third operating position.

FIG. 30 is another sectional view of the flat valve of the water treatment system according to the second preferred embodiment of the present invention, wherein the flat valve of the water treatment system is shown in a fourth operating position.

FIG. 31A is another sectional view of the planar valve of the water treatment system according to the second preferred embodiment of the present invention, wherein the planar valve of the water treatment system is shown in a fifth operational position.

FIG. 31B is another sectional view of the flat valve of the water treatment system according to the second preferred embodiment of the present invention, wherein the flat valve of the water treatment system is shown in the fifth operation position.

FIG. 32A is a schematic view of a water treatment system according to a second preferred embodiment of the present invention, wherein the water treatment system is shown in a purification (or purification-softening) operating position, and the arrows indicate the water flow direction.

FIG. 32B is another schematic view of the water treatment system according to the second preferred embodiment of the present invention, wherein the water treatment system is shown in the second filter element (softening filter element) backwashing operation position, and the arrows are in the water flow direction.

FIG. 32C is another schematic view of the water treatment system according to the second preferred embodiment of the present invention, wherein the water treatment system is shown in the backwashing position of the first filter element (purification filter element), and the arrows are directed to the water flow direction.

FIG. 32D is another schematic view of the water treatment system in accordance with the second preferred embodiment of the present invention, shown in the second cartridge (softening cartridge) normal washing position, with the arrows pointing in the direction of water flow.

FIG. 32E is another schematic diagram of a water treatment system according to a second preferred embodiment of the present invention, wherein the water treatment system is shown in a first filter element (purification filter element) normal washing position, and the arrows are in the water flow direction.

FIG. 33A is a schematic structural diagram of a stationary plate of a flat valve of a water treatment system according to a second preferred embodiment of the present invention.

Fig. 33B is a schematic structural diagram of the movable valve plate of the planar valve of the water treatment system according to the second preferred embodiment of the invention, wherein the broken line in the diagram shows the conducting channel of the movable valve plate.

FIG. 33C is an isometric view of the stationary plate of the planar valve of the water treatment system according to the second preferred embodiment of the present invention, wherein each passage is shown as being disposed at a specific isometric position of the stationary plate.

FIG. 33D is an isometric view of the movable plate of the planar valve of the water treatment system according to the second preferred embodiment of the present invention, wherein the view shows that each channel is disposed at a specific isometric position of the movable plate.

FIG. 34A is a schematic view of the communication between the passage of the movable plate and the passage of the fixed plate of the flat valve in the first working position of the flat valve of the water treatment system according to the second preferred embodiment of the present invention, wherein the hatched portion in the figure shows the passage of the movable plate of the flat valve.

FIG. 34B is a schematic view of the communication between the passage of the movable plate and the passage of the fixed plate of the flat valve in the second working position of the flat valve of the water treatment system according to the second preferred embodiment of the present invention, wherein the hatched portion in the figure shows the passage of the movable plate of the flat valve.

FIG. 34C is a schematic view of the communication between the passage of the movable plate and the passage of the fixed plate of the flat valve in the third operating position of the flat valve of the water treatment system according to the second preferred embodiment of the present invention, wherein the hatched portion in the figure shows the passage of the movable plate of the flat valve.

FIG. 34D is a schematic view of the communication between the passage of the movable plate and the passage of the fixed plate of the flat valve in the fourth operating position of the flat valve of the water treatment system according to the second preferred embodiment of the present invention, wherein the hatched portion in the figure shows the passage of the movable plate of the flat valve.

FIG. 34E is a schematic view of the communication between the passage of the movable plate and the passage of the fixed plate of the flat valve in the fifth operating position of the flat valve according to the second preferred embodiment of the present invention, wherein the hatched portion in the figure shows the passage of the movable plate of the flat valve.

FIG. 35A is a perspective view of the stationary plate of an alternative embodiment of the planar valve of the water treatment system according to the second preferred embodiment of the present invention.

FIG. 35B is a perspective view of the movable valve plate of the alternative embodiment of the planar valve of the water treatment system according to the second preferred embodiment of the present invention.

FIG. 35C is a top view of the stationary plate of the alternative implementation of the planar valve of the water treatment system according to the second preferred embodiment of the present invention.

FIG. 35D is a top view of the movable valve plate of the alternative embodiment of the planar valve of the water treatment system according to the second preferred embodiment of the present invention.

FIG. 35E is a bottom view of the stationary plate of the alternative implementation of the planar valve of the water treatment system according to the second preferred embodiment of the present invention.

FIG. 35F is a bottom view of the movable valve plate of the alternative embodiment of the planar valve of the water treatment system according to the second preferred embodiment of the present invention.

Fig. 36A is a schematic view of the water treatment system according to the second preferred embodiment of the present invention, wherein the water treatment system is in a purification (or purification-softening) operation position, and the arrows are in the water flow direction.

FIG. 36B is a schematic view of another alternative embodiment of the water treatment system according to the second preferred embodiment of the present invention, shown in the second position (softening core) backwashing operation, with the arrows pointing in the direction of water flow.

Fig. 36C is another schematic diagram of the alternative embodiment of the water treatment system according to the second preferred embodiment of the present invention, wherein the water treatment system is shown in the first filter element (purification filter element) backwashing operation position, and the arrows are in the water flow direction.

Fig. 36D is another schematic diagram of the alternative embodiment of the water treatment system in accordance with the second preferred embodiment of the present invention, shown in the second cartridge (softening cartridge) normal washing position, with the arrows pointing in the direction of water flow.

Fig. 36E is another schematic diagram of the alternative embodiment of the water treatment system according to the second preferred embodiment of the present invention, wherein the water treatment system is shown in a first filter element (purification filter element) normal washing position, and the arrows are in the water flow direction.

FIG. 37A is a schematic diagram of the structure of the fixed valve plate of the planar valve of the water treatment system according to the second preferred embodiment of the present invention.

Fig. 37B is a schematic structural diagram of the movable valve plate of the planar valve of the water treatment system according to the second preferred embodiment of the invention, wherein the broken line in the diagram shows the conducting channel of the movable valve plate.

FIG. 37C is an isometric view of the stationary plate of the alternative embodiment of the planar valve of the water treatment system according to the second preferred embodiment of the present invention, wherein the figure shows that each passage is disposed at a specific isometric position of the stationary plate.

FIG. 37D is an isometric view of the movable valve plate of the alternative embodiment of the planar valve of the water treatment system according to the second preferred embodiment of the present invention, wherein the figure shows that each channel is disposed at a specific bisecting position of the movable valve plate.

FIG. 38A is a schematic view of the communication between the passage of the movable plate and the passage of the fixed plate of the planar valve in the first working position of the planar valve according to the second preferred embodiment of the present invention, wherein the hatched portion in the figure shows the passage of the movable plate of the planar valve.

FIG. 38B is a schematic view of the communication between the passage of the movable plate and the passage of the fixed plate of the planar valve in the second working position of the planar valve according to the second preferred embodiment of the present invention, wherein the hatched portion in the figure shows the passage of the movable plate of the planar valve.

FIG. 38C is a schematic view of the communication between the passage of the movable plate and the passage of the fixed plate of the planar valve in the third operating position of the planar valve according to the second preferred embodiment of the present invention, wherein the hatched portion in the figure shows the passage of the movable plate of the planar valve.

FIG. 38D is a schematic view of the communication between the passage of the movable plate and the passage of the fixed plate of the flat valve in the fourth operating position of the flat valve according to the second preferred embodiment of the present invention, wherein the hatched portion in the figure shows the passage of the movable plate of the flat valve.

FIG. 38E is a schematic view of the communication between the passage of the movable plate and the passage of the fixed plate of the planar valve in the fifth operating position of the planar valve according to the second preferred embodiment of the present invention, wherein the hatched portion in the figure shows the passage of the movable plate of the planar valve.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention only and are not intended to limit the scope of the invention.

[ upward pollution discharge-continuous water supply ]

Referring to fig. 1 to 15E of the drawings, a water treatment system according to a first preferred embodiment of the present invention is illustrated, which is suitable for treating raw water or water to be treated, wherein the water treatment system comprises a fluid valve 10 and at least two water treatment devices (a first water treatment device and a second water treatment device), wherein each of the water treatment devices is communicated with the fluid valve 10 through a corresponding water path. It is worth mentioning that the type of water treatment device is not limited in the water treatment system of the present invention, for example in one example the water treatment devices are each purification devices, and in another example at least one water treatment device is a purification device and the other water treatment device is a softening device. Preferably, the first water treatment device of the water treatment system according to the first preferred embodiment of the present invention includes at least one first filter element 20, and the second water treatment device includes at least one second filter element 30. Accordingly, the first filter element 20 of the water treatment system according to the first preferred embodiment of the present invention is configured to perform a primary water treatment on water, and the second filter element 30 is configured to perform a secondary water treatment on water. It is understood that the first filter element 20 can be any water filtering or purifying device having two communication openings, such as the first communication opening 201 and the second communication opening 202, such as a pre-filter, an ultra-filter, an activated carbon filter, a softening filter element (or softening tank), etc. Thus, the water treatment material or device mentioned herein may be provided as a screen, activated carbon, ultrafiltration thread, regenerated resin, PP wool, and possibly even as an RO membrane, depending on the actual application. Similarly, the second filter element 30 can be any water treatment device having two communication openings, such as the first communication opening 301 and the second communication opening 302, such as a pre-filter, an ultra-filtration filter, an activated carbon filter, a softening filter element (or softening tank), and the like. Thus, the water treatment material or device mentioned herein may be provided as a screen, activated carbon, ultrafiltration thread, PP wool, regenerated resin, and possibly even as an RO membrane, depending on the actual application.

it is noted that in the following description, the water treatment system of the present invention will be disclosed and described by taking the first water treatment device (or first filter element 20) as a purification device and the second water treatment device (or second filter element 30) as a softening device. It will be understood by those skilled in the art that the implementation of one such water treatment device (e.g., a first water treatment device) as a purification device and another water treatment device (e.g., a second water treatment device) as a softening device is merely exemplary and should not be taken as limiting the content and scope of the water treatment system of the present invention.

As shown in fig. 1 to 15E of the drawings, the fluid valve 10 of the water treatment system according to the first preferred embodiment of the present invention comprises a valve body 11 and a valve core 1, wherein the valve body 11 forms an inner cavity 110, a first opening 1101, a second opening 1102, a third opening 1103, a fourth opening 1104, a fifth opening 1105 and a sixth opening 1106, wherein the valve core 1 is disposed in the inner cavity 110, wherein the water treatment system according to the first preferred embodiment of the present invention has a first working state, a second working state, a third working state, a fourth working state and a fifth working state, wherein when the water treatment system is in the first working state, the fluid valve 10 forms a first communicating channel 1001, a second communicating channel and a third communicating channel respectively communicating with the first opening 1101 and the sixth opening 1106 of the valve body 11, A second communicating passageway 1002 communicating with the third opening 1103 and the fourth opening 1104 of the valve body 11, respectively, and a third communicating passageway 1003 communicating with the second opening 1102 and the fifth opening 1105 of the valve body 11, respectively; when the water treatment system is in the second working state, the fluid valve 10 forms a fourth communication channel 1004 which is communicated with the third opening 1103 and the sixth opening 1106 of the valve body 11 respectively and a fifth communication channel 1005 which is communicated with the second opening 1102 and a seventh opening 1107 of the valve body 11 respectively; when the water treatment system is in the third operating state, the fluid valve 10 forms a sixth communication channel 1006 in communication with the second opening 1102 and the sixth opening 1106 of the valve body 11, respectively, and a seventh communication channel 1007 in communication with the first opening 1101 and the seventh opening 1107 of the valve body 11, respectively; when the water treatment system is in the fourth operating state, the fluid valve 10 forms an eighth communicating channel 1008 communicating with the second opening 1102 and the sixth opening 1106 of the valve body 11, respectively, and a ninth communicating channel 1009 communicating with the third opening 1103 and the seventh opening 1107 of the valve body 11, respectively; when the water treatment system is in the fifth operating state, the fluid valve 10 forms a tenth communication channel 10010 communicating with the first opening 1101 and the sixth opening 1106 of the valve body 11, respectively, and an eleventh communication channel 10011 communicating with the second opening 1102 and the seventh opening 1107 of the valve body 11, respectively. Preferably, when the water treatment system is in the second operating state, the third operating state, the fourth operating state and the fifth operating state, the water treatment system further forms a twelfth communication channel 10012 respectively communicated with the fourth opening 1104 and the sixth opening 1106 of the valve body 11 and a thirteenth communication channel 10013 respectively communicated with the fifth opening 1105 and the sixth opening 1106 of the valve body 11.

Referring to fig. 1 to 15E of the drawings, the fluid valve 10 of the water treatment system according to the first preferred embodiment of the present invention is a planar valve 10, wherein the planar valve 10 further includes a movable plate 13 and a fixed plate 12, wherein the fixed plate 12 has a first fluid control surface 120, the movable plate 13 has a second fluid control surface 130, wherein the movable plate 13 and the fixed plate 12 are both disposed in the inner cavity 110, wherein the second fluid control surface 130 of the movable plate 13 is disposed at the first fluid control surface 120 of the fixed plate 12, and the movable plate 13 is disposed to rotate relative to the fixed plate 12, wherein the purification device (or the first filter element) 20 has a first communication opening 201 and a second communication opening 202, wherein the second filter element 30 has a first communication opening 301 and a second communication opening 302, wherein the inner cavity 110 of the valve body 11 is communicated with the sixth opening 1106, the first communication opening 201 of the purification device (or the first filter element) 20 is communicated with the first opening 1101 of the valve body 11, the second communication opening 202 of the purification device (or the first filter element) 20 and the first communication opening 301 of the second filter element 30 are both communicated with the second opening 1102 of the valve body 11, and the second communication opening 302 of the second filter element 30 is communicated with the third opening 1103 of the valve body 11. Therefore, when the fluid valve 10 is a flat valve, the spool 1 of the fluid valve 10 includes the movable valve plate 13 and the fixed valve plate 12.

it can be understood by those skilled in the art that the planar valve 10 of the water treatment system of the present invention may further have a connection mechanism, such as a connection screw, a snap joint, etc., disposed on the valve body 11, so that the planar valve 10 can be connected with other structural components of the water treatment system, such as the purification device (or the first filter element) 20, the second filter element 30, etc., to guide the water flow to the respective communication channels formed by the purification device (or the first filter element) 20, the second filter element 30 and the planar valve 10.

As shown in fig. 8A to 12B and fig. 13A to 15E of the drawings, the water treatment system according to the first preferred embodiment of the present invention has a first working state, a second working state, a third working state, a fourth working state and a fifth working state, wherein when the water treatment system is in the first working state, the movable valve plate 13 and the fixed valve plate 12 of the flat valve 10 form the first communication passage 1001 respectively communicating with the first opening 1101 and the sixth opening 1106 (or the inner cavity 110) of the valve body 11, the second communication passage 1002 respectively communicating with the third opening 1103 and the fourth opening 1104 of the valve body 11 and the third communication passage 1003 respectively communicating with the second opening 1102 and the fifth opening 1105 of the valve body 11; when the water treatment system is in the second working state, the movable valve plate 13 and the fixed valve plate 12 of the flat valve 10 form the fourth communication channel 1004 respectively communicated with the third opening 1103 and the sixth opening 1106 (or the inner cavity 110) of the valve body 11 and the fifth communication channel 1005 respectively communicated with the second opening 1102 and the seventh opening 1107 of the valve body 11; when the water treatment system is in the third working state, the movable valve plate 13 and the fixed valve plate 12 of the flat valve 10 form the sixth communication channel 1006 respectively communicated with the second opening 1102 and the sixth opening 1106 (or the inner cavity 110) of the valve body 11 and the seventh communication channel 1007 respectively communicated with the first opening 1101 and the seventh opening 1107 of the valve body 11; when the water treatment system is in the fourth working state, the movable valve plate 13 and the fixed valve plate 12 of the flat valve 10 form the eighth communicating channel 1008 respectively communicated with the second opening 1102 and the sixth opening 1106 (or the inner cavity 110) of the valve body 11 and the ninth communicating channel 1009 respectively communicated with the third opening 1103 and the seventh opening 1107 of the valve body 11; when the water treatment system is in the fifth working state, the movable valve plate 13 and the fixed valve plate 12 of the flat valve 10 form the tenth communication channel 10010 respectively communicated with the first opening 1101 and the sixth opening 1106 (or the inner cavity 110) of the valve body 11 and the eleventh communication channel 10011 respectively communicated with the second opening 1102 and the seventh opening 1107 of the valve body 11. Preferably, when the water treatment system is in the second operating state, the third operating state, the fourth operating state and the fifth operating state, the movable valve plate 13 and the fixed valve plate 12 of the planar valve 10 form the twelfth communicating channel 10012 respectively communicated with the fourth opening 1104 and the sixth opening 1106 (or the inner cavity 110) of the valve body 11 and the thirteenth communicating channel 10013 respectively communicated with the fifth opening 1105 and the sixth opening 1106 (or the inner cavity 110) of the valve body 11.

As shown in fig. 8A to 8D, 13A and 15A of the drawings, when the water treatment system according to the first preferred embodiment of the present invention is in the first working state, the first communication channel 1001 formed by the flat valve 10 is respectively communicated with the first opening 1101 and the sixth opening 1106 (or the inner cavity 110) of the valve body 11, the second communication channel 1002 is respectively communicated with the third opening 1103 and the fourth opening 1104 of the valve body 11, the third communication channel 1003 is respectively communicated with the second opening 1102 and the fifth opening 1105 of the valve body 11, so as to allow raw water to flow from the sixth opening 1106 of the valve body 11 into the inner cavity 110 of the valve body 11, and then flow into the purification device (or the first filter element) 20 through the first communication channel 1001 of the flat valve 10, the first opening 1101 of the valve body 11 and the first communication opening 201 of the purification device (or the first filter element) 20, the raw water flows out from the second communication opening 202 of the purification device (or the first filter element) 20 after being purified (or treated) by the purification device (or the first filter element) 20, the water treated by the purification device (or the first filter element) 20 flows into the second filter element 30 through the first communication opening 301 of the second filter element 30 to be further treated by the second filter element 30, the water treated by the second filter element 30 flows out through the second communication opening 302 of the second filter element 30, then flows through the third opening 1103 of the valve body 11 and the second communication channel 1002 of the flat valve 10, and finally flows out through the fourth opening 1104 of the valve body 11 and supplies the water treated by the purification device (or the first filter element) 20 and the second filter element 30 to a user. Preferably, the second communication opening 202 of the purification device (or the first filter element) 20 is sequentially communicated with the second opening 1102 of the valve body 11, the third communication channel 1003 of the planar valve 10 and the fifth opening 1105 of the valve body 11, so that the water treated by the purification device (or the first filter element) 20 flows out from the second communication opening 202 of the purification device (or the first filter element) 20, sequentially passes through the second opening 1102 of the valve body 11, the third communication channel 1003 of the planar valve 10, and finally flows out through the fifth opening 1105 of the valve body 11 and supplies the water treated by the purification device (or the first filter element) 20 to a user. Therefore, when the water treatment system is in the first operation state, the water treatment system of the present invention can simultaneously provide the user with the water separately treated by the purification device (or the first filter element) 20 and the second filter element 30. Accordingly, the first operating state of the water treatment system corresponds to a purification (or purification-softening) operating state of the water treatment system. Therefore, when the water treatment system is in the first working state, the sixth opening 1106 of the valve body 11 (or the inner cavity 110 of the valve body 11), the first opening 1101 of the valve body 11, the first communication opening 201 of the purification device (or the first filter element) 20, the second communication opening 202 of the purification device (or the first filter element) 20, the first communication opening 301 of the second filter element 30, the second communication opening 302 of the second filter element 30, the third opening 1103 of the valve body 11 and the fourth opening 1104 of the valve body 11 are communicated in sequence, thereby forming a flow path connecting the purification apparatus (or the first filter element) 20 and the second filter element 30 in series, so that the raw water can flow from the purification device (or the first filter element) 20 to the second filter element 30 and be treated by the purification device (or the first filter element) 20 and the second filter element 30 in sequence. Accordingly, when the water treatment system is in the first operating state, the sixth opening 1106 of the valve body 11 (or the inner cavity 110 of the valve body 11), the first opening 1101 of the valve body 11, the first communication opening 201 of the purification device (or the first filter element) 20, the second communication opening 202 of the purification device (or the first filter element) 20, the second opening 1102 of the valve body 11 and the fifth opening 1105 of the valve body 11 are sequentially communicated, so as to form a water flow path, so that raw water can flow through the purification device (or the first filter element) 20 and be treated by the purification device (or the first filter element) 20. The direction of the arrows in fig. 13A indicates the direction of water flow.

As shown in fig. 9A to 9B, 13B and 15B of the drawings, when the water treatment system according to the first preferred embodiment of the present invention is in the second operation state, the fourth communication channel 1004 formed by the planar valve 10 is respectively communicated with the third opening 1103 and the sixth opening 1106 (or the inner cavity 110) of the valve body 11, the fifth communication channel 1005 is respectively communicated with the second opening 1102 and the seventh opening 1107 of the valve body 11, so as to allow raw water to flow from the sixth opening 1106 of the valve body 11 into the inner cavity 110 of the valve body 11, then flow into the third opening 1103 of the valve body 11 through the fourth communication channel 1004 formed by the planar valve 10, flow into the second filter element 30 through the second communication opening 302 of the second filter element 30, and reversely flush softened materials (or water treatment materials) in the second filter element 30, such as softened resins, the obtained sewage or wastewater flows out of the first communication opening 301 of the second filter element 30, then flows through the second opening 1102 of the valve body 11 into the fifth communication channel 1005 of the flat valve 10, and then flows out of the seventh opening 1107 of the valve body 11. In other words, the water treatment system of the present invention can control the back flushing of the second filter element 30 when the water treatment system is in the second operating state. Accordingly, the second operating condition of the water treatment system corresponds to a second filter element backwashing operating condition of the water treatment system. Therefore, when the water treatment system is in the second working state, the sixth opening 1106 of the valve body 11 (or the inner cavity 110 of the valve body 11), the third opening 1103 of the valve body 11, the second through opening 302 of the second filter element 30, the first through opening 301 of the second filter element 30, the second opening 1102 of the valve body 11 and the seventh opening 1107 of the valve body 11 are sequentially communicated, so as to form a water flow path, so that raw water can flow through the second filter element 30 and reversely flush the second filter element 30 with the raw water, and the obtained sewage or wastewater flows out from the seventh opening 1107 of the valve body 11. The direction of the arrows in fig. 13B indicates the direction of water flow.

Preferably, the twelfth communication channel 10012 formed by the flat valve 10 is respectively communicated with the fourth opening 1104 and the sixth opening 1106 (or the inner cavity 110) of the valve body 11, the thirteenth communication channel 10013 formed by the flat valve 10 is respectively communicated with the fifth opening 1105 and the sixth opening 1106 (or the inner cavity 110) of the valve body 11, so as to allow raw water to flow from the sixth opening 1106 of the valve body 11 into the inner cavity 110 of the valve body 11, and then the twelfth communication channel 10012 and the thirteenth communication channel 10013 formed by the flat valve 10 are respectively flowed out and supplied to a user through the fourth opening 1104 and the fifth opening 1105 of the valve body 11. That is, when the water treatment system is in the second working state, the water treatment system can continuously supply raw water to a user so as to avoid water supply interruption. That is, when the water treatment system of the present invention is in the second operation state, the valve body 11 forms a first fluid distribution space 11101 respectively communicated with the sixth opening 1106, the third opening 1103, the fourth opening 1104 and the fifth opening 1105 of the valve body 11, so that when the raw water enters the inner cavity 110 of the valve body 11 from the sixth opening 1106 of the valve body 11 and further flows into the first fluid distribution space 11101, the first fluid distribution space 11101 can guide raw water into the third opening 1103, the fourth opening 1104 and the fifth opening 1105 of the valve body 11 in turn, so that the raw water flowing into the third opening 1103 of the valve body 11 can further flow into the second filter element 30 through the second through opening 302 of the second filter element 30, so as to perform the back flushing of the second filter cartridge 30, and accordingly, the raw water flowing into the fourth opening 1104 and the fifth opening 1105 of the valve body 11 can be supplied to the user. That is, when the water treatment system of the present invention performs the back flushing of the second filter element 30, the water treatment system can still continuously provide the raw water to the user, so as to avoid the interruption of the water supply.

As shown in fig. 10A to 10B, 13C and 15C of the drawings, when the water treatment system according to the first preferred embodiment of the present invention is in the third operating state, the sixth communication channel 1006 formed by the planar valve 10 is respectively communicated with the second opening 1102 and the sixth opening 1106 (or the inner cavity 110) of the valve body 11, the seventh communication channel 1007 is respectively communicated with the first opening 1101 and the seventh opening 1107 of the valve body 11, so as to allow raw water to flow from the sixth opening 1106 of the valve body 11 into the inner cavity 110 of the valve body 11, then flow into the second opening 1102 of the valve body 11 through the sixth communication channel 1006 formed by the planar valve 10, flow into the purification device (or the first filter element) 20 through the second communication opening 202 of the purification device (or the first filter element) 20, and perform reverse flushing on the purification device (or the first filter element) 20, the resulting sewage or wastewater flows out of the first communication opening 201 of the purification apparatus (or the first filter element) 20, then flows through the first opening 1101 of the valve body 11 into the seventh communication channel 1007 of the flat valve 10, and then flows out of the seventh opening 1107 of the valve body 11. In other words, when the water treatment system is in the third operating state, the water treatment system of the present invention can control the back flushing of the purification device (or the first filter element) 20. Accordingly, the third operating state of the water treatment system corresponds to the backwashing operating state of the purification device (or the first filter element) of the water treatment system. Therefore, when the water treatment system is in the third working state, the sixth opening 1106 of the valve body 11 (or the inner cavity 110 of the valve body 11), the second opening 1102 of the valve body 11, the second communication opening 202 of the purification device (or the first filter element) 20, the first communication opening 201 of the purification device (or the first filter element) 20, the first opening 1101 of the valve body 11 and the seventh opening 1107 of the valve body 11 are sequentially communicated, so as to form a water flow path, so that raw water can flow through the purification device (or the first filter element) 20 and reversely flush the purification device (or the first filter element) 20 by the raw water, and the obtained sewage or wastewater flows out from the seventh opening 1107 of the valve body 11. The direction of the arrows in fig. 13C indicates the direction of water flow.

Preferably, the twelfth communication channel 10012 formed by the flat valve 10 is respectively communicated with the fourth opening 1104 and the sixth opening 1106 (or the inner cavity 110) of the valve body 11, the thirteenth communication channel 10013 formed by the flat valve 10 is respectively communicated with the fifth opening 1105 and the sixth opening 1106 (or the inner cavity 110) of the valve body 11, so as to allow raw water to flow from the sixth opening 1106 of the valve body 11 into the inner cavity 110 of the valve body 11, and then the twelfth communication channel 10012 and the thirteenth communication channel 10013 formed by the flat valve 10 are respectively flowed out and supplied to a user through the fourth opening 1104 and the fifth opening 1105 of the valve body 11. That is, when the water treatment system is in the third operating state, the water treatment system can continuously supply raw water to a user to avoid water supply interruption. That is, when the water treatment system of the present invention is in the third operating state, the valve body 11 forms a second fluid distribution space 11102 respectively communicated with the sixth opening 1106, the second opening 1102, the fourth opening 1104 and the fifth opening 1105 of the valve body 11, so that when the raw water enters the inner cavity 110 of the valve body 11 from the sixth opening 1106 of the valve body 11 and further flows into the second fluid distribution space 11102, the second fluid distribution space 11102 can sequentially guide the raw water into the second opening 1102, the fourth opening 1104 and the fifth opening 1105 of the valve body 11, so that the raw water flowing into the second opening 1102 of the valve body 11 can further flow into the purification device (or the first filter element) 20 through the second communication opening 202 of the purification device (or the first filter element) 20, so as to realize the back flushing of the purification device (or the first filter element) 20, accordingly, the raw water flowing into the fourth and fifth openings 1104 and 1105 of the valve body 11 can be supplied to the user. That is, when the water treatment system of the present invention performs the back flushing of the purification device (or the first filter element) 20, the water treatment system can still continuously provide the raw water to the user to avoid the interruption of the water supply.

As shown in fig. 11, 13D and 15D of the drawings, when the water treatment system according to the first preferred embodiment of the present invention is in the fourth operating state, the eighth communication channel 1008 formed by the planar valve 10 is respectively communicated with the second opening 1102 and the sixth opening 1106 (or the inner cavity 110) of the valve body 11, the ninth communication channel 1009 formed by the planar valve 10 is respectively communicated with the third opening 1103 and the seventh opening 1107 of the valve body 11, so as to allow raw water to flow into the inner cavity 110 of the valve body 11 from the sixth opening 1106 of the valve body 11, then flow into the first through opening 301 of the second filter element 30 through the eighth communication channel 1008 formed by the planar valve 10, and flow out of the second through opening 302 of the second filter element 30 after performing forward flushing on the second filter element 30, and then flow into the ninth communication channel 1009 of the planar valve 10 through the third opening 1103 of the valve body 11, and then flows out of the seventh opening 1107 of the valve body 11. In other words, the water treatment system of the present invention can control the forward flushing of the second filter element 30 when the water treatment system is in the fourth operating state. Accordingly, the fourth operating condition of the water treatment system corresponds to a second cartridge forward wash operating condition of the water treatment system. Therefore, when the water treatment system is in the fourth operating state, the sixth opening 1106 of the valve body 11 (or the inner cavity 110 of the valve body 11), the second opening 1102 of the valve body 11, the first through opening 301 of the second filter element 30, the second through opening 302 of the second filter element 30, the third opening 1103 of the valve body 11, and the seventh opening 1107 of the valve body 11 are sequentially communicated, so as to form a water flow path, such that raw water can flow through the second filter element 30 and the second filter element 30 is being washed by the raw water, and the obtained sewage or wastewater flows out from the seventh opening 1107 of the valve body 11. The direction of the arrows in fig. 13D indicates the direction of water flow.

Preferably, the twelfth communication channel 10012 formed by the flat valve 10 is respectively communicated with the fourth opening 1104 and the sixth opening 1106 (or the inner cavity 110) of the valve body 11, the thirteenth communication channel 10013 formed by the flat valve 10 is respectively communicated with the fifth opening 1105 and the sixth opening 1106 (or the inner cavity 110) of the valve body 11, so as to allow raw water to flow from the sixth opening 1106 of the valve body 11 into the inner cavity 110 of the valve body 11, and then the twelfth communication channel 10012 and the thirteenth communication channel 10013 formed by the flat valve 10 are respectively flowed out and supplied to a user through the fourth opening 1104 and the fifth opening 1105 of the valve body 11. That is, when the water treatment system is in the fourth operating state, the water treatment system can continuously supply raw water to a user so as to avoid water supply interruption. That is, when the water treatment system of the present invention is in the fourth operating state, the valve body 11 forms a third fluid distribution space 11103 respectively communicated with the sixth opening 1106, the second opening 1102, the fourth opening 1104 and the fifth opening 1105 of the valve body 11, so that when the raw water enters the inner cavity 110 of the valve body 11 from the sixth opening 1106 of the valve body 11 and further flows into the third fluid distribution space 11103, the third fluid distribution space 11103 can guide the raw water into the second opening 1102, the fourth opening 1104 and the fifth opening 1105 of the valve body 11 in turn, so that the raw water flowing into the second opening 1102 of the valve body 11 can further flow into the second filter element 30 through the first communication opening 301 of the second filter element 30, so as to realize the forward flushing of the second filter element 30, and accordingly, the raw water flowing into the fourth opening 1104 and the fifth opening 1105 of the valve body 11 can be supplied to the user. That is, when the water treatment system of the present invention performs the forward flushing of the second filter element 30, the water treatment system can still continuously provide the raw water to the user, so as to avoid the interruption of the water supply.

As shown in fig. 12A to 12B, 13E and 15E of the drawings, when the water treatment system according to the first preferred embodiment of the present invention is in the fifth working state, the tenth communication channel 10010 formed by the flat valve 10 is respectively communicated with the first opening 1101 and the sixth opening 1106 (or the inner cavity 110) of the valve body 11, the eleventh communication channel 10011 formed by the flat valve 10 is respectively communicated with the second opening 1102 and the seventh opening 1107 of the valve body 11, so as to allow raw water to flow into the inner cavity 110 of the valve body 11 from the sixth opening 1106 of the valve body 11, then flow into the first communication opening 201 of the purification device (or the first filter element) 20 through the tenth communication channel 10010 formed by the flat valve 10, and flow out from the second communication opening 202 of the purification device (or the first filter element) 20 after forward flushing the purification device (or the first filter element) 20, then flows through the second opening 1102 of the valve body 11 into the eleventh communication passage 10011 of the flat valve 10, and then flows out through the seventh opening 1107 of the valve body 11. In other words, when the water treatment system is in the fifth operating state, the water treatment system of the present invention can control the forward flushing of the purification device (or the first filter element) 20. Accordingly, the fifth operating condition of the water treatment system corresponds to a forward washing operating condition of the purification device (or the first filter element) of the water treatment system. Therefore, when the water treatment system is in the fifth working state, the sixth opening 1106 of the valve body 11 (or the inner cavity 110 of the valve body 11), the first opening 1101 of the valve body 11, the first communication opening 201 of the purification device (or the first filter element) 20, the second communication opening 202 of the purification device (or the first filter element) 20, the second opening 1102 of the valve body 11 and the seventh opening 1107 of the valve body 11 are sequentially communicated, so as to form a water flow path, so that raw water can flow through the purification device (or the first filter element) 20 and the purification device (or the first filter element) 20 is being washed by the raw water, and the obtained sewage or wastewater flows out from the seventh opening 1107 of the valve body 11. The direction of the arrows in fig. 13E indicate the direction of water flow.

Preferably, the twelfth communication channel 10012 formed by the flat valve 10 is respectively communicated with the fourth opening 1104 and the sixth opening 1106 (or the inner cavity 110) of the valve body 11, the thirteenth communication channel 10013 formed by the flat valve 10 is respectively communicated with the fifth opening 1105 and the sixth opening 1106 (or the inner cavity 110) of the valve body 11, so as to allow raw water to flow from the sixth opening 1106 of the valve body 11 into the inner cavity 110 of the valve body 11, and then the twelfth communication channel 10012 and the thirteenth communication channel 10013 formed by the flat valve 10 are respectively flowed out and supplied to a user through the fourth opening 1104 and the fifth opening 1105 of the valve body 11. That is, when the water treatment system is in the fifth operating state, the water treatment system can continuously supply raw water to a user to avoid water supply interruption. That is, when the water treatment system of the present invention is in the fifth operating state, the valve body 11 forms a fourth fluid distribution space 11104 communicated with the sixth opening 1106, the first opening 1101, the fourth opening 1104 and the fifth opening 1105 of the valve body 11, respectively, so that when the raw water enters the inner cavity 110 of the valve body 11 from the sixth opening 1106 of the valve body 11 and further flows into the fourth fluid distribution space 11104, the fourth fluid distribution space 11104 can guide the raw water into the first opening 1101, the fourth opening 1104 and the fifth opening 1105 of the valve body 11 in sequence, so that the raw water flowing into the first opening 1101 of the valve body 11 can further flow into the purification device (or the first filter element) 20 through the first communication opening 201 of the purification device (or the first filter element) 20, so as to realize the forward flushing of the purification device (or the first filter element) 20, accordingly, the raw water flowing into the fourth and fifth openings 1104 and 1105 of the valve body 11 can be supplied to the user. That is, when the water treatment system of the present invention performs the forward flushing of the purification device (or the first filter element) 20, the water treatment system can still continuously provide the raw water to the user to avoid the interruption of the water supply.

Accordingly, as shown in fig. 8A to 12B and 13A to 13E of the drawings, the fluid valve (or planar valve) 10 of the water treatment system according to the first preferred embodiment of the present invention has a first working position, a second working position, a third working position, a fourth working position and a fifth working position, wherein when the fluid valve (or planar valve) 10 is in the first working position, the valve core 1 of the fluid valve 10 forms the first communicating channel 1001, the second communicating channel 1002 and the third communicating channel 1003; when the fluid valve (or planar valve) 10 is in the second operating position, the spool 1 of the fluid valve 10 forms the fourth communication passage 1004 and the fifth communication passage 1005; when the fluid valve (or planar valve) 10 is in the third operating position, the spool 1 of the fluid valve 10 forms the sixth communication passage 1006 and the seventh communication passage 1007; when the fluid valve (or planar valve) 10 is in the fourth operating position, the spool 1 of the fluid valve 10 forms the eighth communication passage 1008 and the ninth communication passage 1009; when the fluid valve (or planar valve) 10 is in the fifth operating position, the spool 1 of the fluid valve 10 forms the tenth communication passage 10010 and the eleventh communication passage 10011. More preferably, when the fluid valve (or planar valve) 10 is in the second, third, fourth and fifth operating positions, the spool 1 of the fluid valve 10 further forms the twelfth communication passage 10012 and the thirteenth communication passage 10013. Accordingly, when the fluid valve (or planar valve) 10 is in the second operating position, the third operating position, the fourth operating position and the fifth operating position, the valve spool 1 of the fluid valve 10 further forms the first fluid distribution space 11101, the second fluid distribution space 11102, the third fluid distribution space 11103 and the fourth fluid distribution space 11104.

As shown in fig. 5A to 7F and fig. 13A to 15E of the drawings, the flat valve 10 of the water treatment system according to the first preferred embodiment of the present invention has a first channel 101, a second channel 102, a third channel 103, a fourth channel 104, a fifth channel 105, a sixth channel 106, a seventh channel 107, an eighth channel 108 and a ninth channel 109, wherein the first channel 101, the second channel 102, the third channel 103, the fourth channel 104 and the fifth channel 105 are respectively disposed on the fixed valve plate 12 and respectively extend from the first fluid control surface 120 of the fixed valve plate 12; the sixth channel 106, the seventh channel 107, the eighth channel 108, and the ninth channel 109 are respectively disposed on the movable valve plate 13 and respectively extend from the second fluid control surface 130 of the movable valve plate 13, the first channel 101 is communicated with the first opening 1101, the second channel 102 is communicated with the second opening 1102, the third channel 103 is communicated with the third opening 1103, the fourth channel 104 is communicated with the fourth opening 1104, the fifth channel 105 is communicated with the fifth opening 1105, the sixth channel 106 is communicated with the inner cavity 110 of the valve body 11, and the ninth channel 109 is communicated with the seventh opening 1107 of the flat valve 10. In addition, in order to ensure that the water in the inner cavity 110 of the valve body 11 enters the sixth channel 106, the sixth channel 106 is arranged to be constantly in communication with the inner cavity 110 of the valve body 11 through a water inlet 1061 which is constantly in communication with the external space.

As shown in fig. 15A to 15E of the drawings, the movable valve plate 13 of the flat valve 10 of the water treatment system according to the first preferred embodiment of the present invention can rotate relative to the fixed valve plate 12, so that the flat valve 10 has the first working position, the second working position, the third working position, the fourth working position and the fifth working position, wherein when the flat valve 10 is in the first working position, the sixth channel 106 of the flat valve 10 is communicated with the first channel 101, the seventh channel 107 is communicated with the third channel 103 and the fourth channel 104, respectively, and the eighth channel 108 is communicated with the second channel 102 and the fifth channel 105, respectively; when the flat valve 10 is in the second working position, the sixth passage 106 is communicated with the third passage 103, and the ninth passage 109 is communicated with the second passage 102; when the flat valve 10 is in the third working position, the sixth passage 106 is communicated with the second passage 102, and the ninth passage 109 is communicated with the first passage 101; when the flat valve 10 is in the fourth working position, the sixth passage 106 is communicated with the second passage 102, and the ninth passage 109 is communicated with the third passage 103; when the flat valve 10 is in the fifth operating position, the sixth passage 106 is in communication with the first passage 101, and the ninth passage 109 is in communication with the second passage 102. Preferably, when the planar valve 10 is in the second working position, the third working position, the fourth working position and the fifth working position, the fourth channel 104 and the fifth channel 105 are respectively communicated with the inner cavity 110 (or the sixth opening 1106) of the valve body 11.

It is understood that when the flat valve 10 is in the first working position, the water treatment system according to the first preferred embodiment of the present invention is controlled to be in the purification (or purification-softening) working state, the sixth channel 106 of the flat valve 10 is communicated with the first channel 101 to form the first communicating channel 1001, the seventh channel 107 is communicated with the third channel 103 and the fourth channel 104 to form the second communicating channel 1002, and the eighth channel 108 is communicated with the second channel 102 and the fifth channel 105 to form the third communicating channel 1003; when the flat valve 10 is at the second working position, the water treatment system according to the first preferred embodiment of the present invention is controlled to be in the second filter element backwashing working state, the sixth channel 106 of the flat valve 10 is communicated with the third channel 103 to form the fourth communication channel 1004, and the ninth channel 109 is communicated with the second channel 102 to form the fifth communication channel 1005; when the flat valve 10 is at the third working position, the water treatment system according to the first preferred embodiment of the present invention is controlled to be in the backwashing working state of the purification device (or the first filter element), the sixth channel 106 of the flat valve 10 is communicated with the second channel 102 to form the sixth communication channel 1006, and the ninth channel 109 is communicated with the first channel 101 to form the seventh communication channel 1007; when the flat valve 10 is in the fourth working position, the water treatment system according to the first preferred embodiment of the present invention is controlled to be in the second filter element forward washing working state, the sixth channel 106 of the flat valve 10 is communicated with the second channel 102 to form the eighth communication channel 1008, and the ninth channel 109 is communicated with the third channel 103 to form the ninth communication channel 1009; when the flat valve 10 is in the fifth working position, the water treatment system according to the first preferred embodiment of the present invention is controlled to be in the purifying device (or the first filter element) washing working state, the sixth channel 106 of the flat valve 10 is communicated with the first channel 101 to form the tenth communicating channel 10010, and the ninth channel 109 is communicated with the second channel 102 to form the eleventh communicating channel 10011. Further, when the flat valve 10 is respectively located at the second working position, the third working position, the fourth working position and the fifth working position, the water treatment system according to the first preferred embodiment of the present invention is respectively located at the second filter element backwashing working state, the purification device (or first filter element) backwashing working state, the second filter element forward washing working state and the purification device (or first filter element) forward washing working state, the fourth channel 104 of the flat valve 10 is communicated with the sixth channel 106 (or the inner cavity 110 of the valve body 11) to form the twelfth communicating channel 10012, and the fifth channel 105 is communicated with the sixth channel 106 (or the inner cavity 110 of the valve body 11) to form the thirteenth communicating channel 10013.

As shown in fig. 8A to 8D, fig. 13A and fig. 15A of the drawings, correspondingly, when the planar valve 10 is at the first working position, the water treatment system is in a purification (or purification-softening) working state, raw water flows into the inner cavity 110 of the valve body 11 from the sixth opening 1106 of the valve body 11, then flows into the first passage 101 of the fixed valve plate 12 through the sixth passage 106 of the movable valve plate 13, then flows into the first communication opening 201 of the purification device (or the first filter element) 20 through the first opening 1101 of the valve body 11, and after being treated by the water treatment material or device of the purification device (or the first filter element) 20, flows out from the second communication opening 202 of the purification device (or the first filter element) 20, and then purified water is divided into two paths, wherein one path of purified water flows into the first communication opening 301 of the second filter element 30, and after being treated by the water treatment material or device of the second filter element 30, the purified water flows out of the second conducting opening 302 of the second filter element 30, then enters the third channel 103 of the fixed valve plate 12 through the third opening 1103 of the valve body 11, is guided to enter the fourth channel 104 of the fixed valve plate 12 through the seventh channel 107 of the movable valve plate 13, then is supplied to a user through the fourth opening 1104 of the valve body 11, wherein another path of purified water flows into the second opening 1102 of the valve body 11, then flows into the second channel 102 of the fixed valve plate 12, is guided to enter the fifth channel 105 of the fixed valve plate 12 through the eighth channel 108 of the movable valve plate 13, and finally is supplied to the user through the fifth opening 1105 of the valve body 11; as shown in fig. 9A to 9B, 13B and 15B of the drawings, when the flat valve 10 is at the second working position, the water treatment system is in the second filter element backwashing working state, raw water flows into the inner cavity 110 of the valve body 11 from the sixth opening 1106 of the valve body 11, then flows into the third channel 103 of the fixed valve plate 12 through the sixth channel 106 of the movable valve plate 13, then enters the second conducting opening 302 of the second filter element 30 through the third opening 1103 of the valve body 11, flows out of the first conducting opening 301 of the second filter element 30 after performing reverse flushing on the second filter element 30, then flows through the second opening 1102 of the valve body 11, then flows through the second channel 102 of the fixed valve plate 12 and the ninth channel 109 of the movable valve plate 13, and then flows out of the seventh opening 1107 of the flat valve 10; as shown in fig. 10A to 10B, 13C and 15C of the drawings, when the planar valve 10 is in the third operating position, the water treatment system is in the back washing working state of the purification device (or the first filter element), raw water flows into the inner cavity 110 of the valve body 11 from the sixth opening 1106 of the valve body 11, then flows into the second channel 102 of the fixed valve plate 12 through the sixth channel 106 of the movable valve plate 13, and then enters the second communication opening 202 of the purification apparatus (or the first cartridge) 20 through the second opening 1102 of the valve body 11, after the purification device (or the first filter element) 20 is reversely flushed, the fluid flows out of the first communication opening 201 of the purification device (or the first filter element) 20, then flows through the first channel 101 of the fixed valve plate 12 and the ninth channel 109 of the movable valve plate 13, and then flows out of the seventh opening 1107 of the flat valve 10; as shown in fig. 11, 13D and 15D of the accompanying drawings, when the flat valve 10 is at the fourth working position, the water treatment system is in the second filter element forward washing working state, raw water flows into the inner cavity 110 of the valve body 11 from the sixth opening 1106 of the valve body 11, then flows into the second passage 102 of the fixed valve plate 12 through the sixth passage 106 of the movable valve plate 13, then flows into the first conducting opening 301 of the second filter element 30 through the second opening 1102 of the valve body 11, and after performing forward washing on the second filter element 30, flows out from the second conducting opening 302 of the second filter element 30, then flows through the third passage 103 of the fixed valve plate 12 and the ninth passage 109 of the movable valve plate 13, and then flows out from the seventh opening 1107 of the flat valve 10; as shown in fig. 12A-12B, 13E and 15E of the drawings, when the planar valve 10 is in the fifth operating position, the water treatment system is in the normal washing operation of the purification device (or the first filter element), raw water flows into the inner cavity 110 of the valve body 11 from the sixth opening 1106 of the valve body 11, then flows into the first channel 101 of the fixed valve plate 12 through the sixth channel 106 of the movable valve plate 13, then enters the first communication opening 201 of the purification device (or the first cartridge) 20 through the first opening 1101 of the valve body 11, the purification device (or the first filter element) 20 is positively flushed, flowing out of the second communication opening 202 of the purification device (or the first filter element) 20, then flows through the second channel 102 of the fixed valve plate 12 and the ninth channel 109 of the movable valve plate 13, and flows out of the seventh opening 1107 of the flat valve 10.

As shown in fig. 15A to 15E of the drawings, preferably, when the planar valve 10 is in the first working position, the ninth channel 109 of the planar valve 10 is closed by the fixed valve plate 12; when the flat valve 10 is at the second working position, the first channel 101 of the flat valve 10 is closed by the movable valve plate 13, the seventh channel 107 is communicated with the second channel 102, and the eighth channel 108 is closed by the fixed valve plate 12; when the planar valve 10 is in the third working position, the seventh passage 107 is communicated with the second passage 102, and the eighth passage 108 is communicated with the third passage 103; when the flat valve 10 is in the fourth working position, the seventh passage 107 is communicated with the first passage 101, and the eighth passage 108 is closed by the fixed valve plate 12; when the planar valve 10 is at the fifth working position, the third channel 103 is closed by the movable valve plate 13, the seventh channel 107 is closed by the fixed valve plate 12, and the eighth channel 108 is communicated with the second channel 102.

It should be noted that the first channel 101, the second channel 102, the third channel 103, the fourth channel 104 and the fifth channel 105 of the flat valve 10 are separately disposed on the first fluid control surface 120 of the fixed valve plate 12; the sixth channel 106, the seventh channel 107, the eighth channel 108 and the ninth channel 109 are separately disposed on the second fluid control surface 130 of the movable valve plate 13. In other words, the first channel 101, the second channel 102, the third channel 103, the fourth channel 104 and the fifth channel 105 of the flat valve 10 form a channel opening of the first fluid control surface 120 disposed on the stationary plate 12, the sixth channel 106, the seventh channel 107, the eighth channel 108 and the ninth channel 109 respectively form a channel opening of the second fluid control surface 130 disposed on the movable valve plate 13, when the movable plate 13 of the flat valve 10 is disposed opposite to the first fluid control surface 120 by the second fluid control surface 130, and when the movable valve plate 13 rotates relative to the fixed valve plate 12, the channel disposed on the movable valve plate 13 and the channel disposed on the fixed valve plate 12 are selectively communicated through the corresponding channel openings, thereby forming a corresponding communication channel and controlling the flow direction of the fluid (such as water flow).

It is understood that the first channel 101, the second channel 102, the third channel 103, the fourth channel 104, the fifth channel 105, the sixth channel 106, the seventh channel 107, the eighth channel 108 and the ninth channel 109 of the planar valve 10 can have any extended path (or direction) that can achieve the communicating relationship herein; the first channel 101, the second channel 102, the third channel 103, the fourth channel 104 and the fifth channel 105 of the flat valve 10 are respectively formed at the channel opening of the first fluid control surface 120 of the fixed valve plate 12, and the sixth channel 106, the seventh channel 107, the eighth channel 108 and the ninth channel 109 are respectively formed at the channel opening of the second fluid control surface 130 of the movable valve plate 13, and may have any shape capable of achieving the mutual communication relationship therein. For example, the second channel 102 formed at the channel opening of the first fluid control surface 120 of the fixed valve plate 12 can be configured to have a regular shape, and can also be configured to have an irregular shape. Therefore, the extension paths (or directions) of the first channel 101, the second channel 102, the third channel 103, the fourth channel 104, the fifth channel 105, the sixth channel 106, the seventh channel 107, the eighth channel 108 and the ninth channel 109 of the planar valve 10 and the shapes of the channel openings thereof should not be construed as limitations of the present invention.

As shown in fig. 14A to 14D of the drawings, the first channel 101, the third channel 103, the fourth channel 104 and the second channel 102 of the flat valve 10 of the water treatment system according to the first preferred embodiment of the present invention are arranged on the fixed valve plate 12 clockwise in this order, and the fifth channel 105 is located outside the second channel 102; the sixth passage 106, the seventh passage 107, the ninth passage 109, and the eighth passage 108 of the flat valve 10 are arranged clockwise in this order on the movable valve plate 13. Optionally, the first channel 101, the third channel 103, the fourth channel 104 and the second channel 102 of the planar valve 10 are arranged on the fixed valve plate 12 counterclockwise in this order; the sixth passage 106, the seventh passage 107, the ninth passage 109, and the eighth passage 108 of the flat valve 10 are arranged counterclockwise in this order on the movable valve plate 13.

Referring to fig. 14A to 14D of the drawings, the fixed valve plate 12 of the flat valve 10 of the water treatment system according to the first preferred embodiment of the present invention has a first central portion 121, a first extending portion 122 extending outwardly from the first central portion 121, and a first edge portion 123 extending outwardly from the first extending portion 122, the movable valve plate 13 has a second central portion 131, a second extending portion 132 extending outwardly from the second central portion 131, and a second edge portion 133 extending outwardly from the second extending portion 132, wherein the first fluid control surface 120 of the fixed valve plate 12 has a central portion 1200 shown by a chain line in the drawing, wherein the central portion 1200 is disposed on the first central portion 121 of the fixed valve plate 12, and a portion of the first fluid control surface 120 outside the central portion 1200 is divided clockwise into a first portion 1200, a second portion, a third portion, a fourth portion, a fifth portion, a sixth, A second portion 1202, a third portion 1203, a fourth portion 1204, a fifth portion 1205, a sixth portion 1206, a seventh portion 1207, an eighth portion 1208, and a ninth portion 1209; the second fluid control surface 130 of the movable plate 13 of the flat valve 10 has a central area 1300 shown by a chain line in the figure, wherein the central area 1300 is disposed at the second central portion 131 of the movable plate 13, and the portion of the second fluid control surface 130 outside the central area 1300 is divided clockwise equally into a first area 1301, a second area 1302, a third area 1303, a fourth area 1304, a fifth area 1305, a sixth area 1306, a seventh area 1307, an eighth area 1308 and a ninth area 1309 shown by dotted lines; wherein the first channel 101 extends downward from the first portion 1201 and the second portion 1202 of the first fluidic control surface 120, and the first channel 101 is a through hole; the third channel 103 extends downward from the third portion 1203 of the first fluid control surface 120, and the third channel 103 is a through hole; the fourth channel 104 extends downward from the fourth portion 1204 of the first fluidic control surface 120, and the fourth channel 104 is a through hole; the second channel 102 extends downward from the sixth portion 1206, the seventh portion 1207, and the eighth portion 1208 of the first fluid control surface 120, and the second channel 102 is a through hole; the fifth channel 105 extends downward from the seventh portion 1207 of the first fluid control surface 120, and the fifth channel 102 is a through hole; the sixth channel 106 extends upward from the first region 1301 of the second flow control surface 130; the seventh channel 107 extends upward from the third area 1303 and the fourth area 1304 of the second fluid control surface 130, and the seventh channel 107 is a blind hole or a guiding groove; the ninth channel 109 extends upwardly from the fifth region 1305 of the second fluid control surface 130, and the ninth channel 109 is a through hole; the eighth channel 108 extends upwardly from the seventh region 1307 of the second fluid control surface 130, and the eighth channel 108 is a blind hole or a channel.

It can be understood that, when the second fluid control surface 130 of the movable valve plate 13 is disposed on the first fluid control surface 120 of the fixed valve plate 12, the second central portion 131 of the second fluid control surface 130 of the movable valve plate 13 faces the first central portion 121 of the first fluid control surface 120 of the fixed valve plate 12, the second extending portion 132 of the second fluid control surface 130 of the movable valve plate 13 faces the first extending portion 122 of the first fluid control surface 120 of the fixed valve plate 12, and the second edge portion 133 of the second fluid control surface 130 of the movable valve plate 13 faces the first edge portion 123 of the first fluid control surface 120 of the fixed valve plate 12.

Optionally, the first fluid control surface 120 of the fixed valve plate 12 and the second fluid control surface 130 of the movable valve plate 13 of the flat valve 10 are both circular, the first channel 101, the second channel 102, the third channel 103, the fourth channel 104, and the fifth channel 105 are all radially disposed on the first fluid control surface 120 of the fixed valve plate 12, and the sixth channel 106, the seventh channel 107, the eighth channel 108, and the ninth channel 109 are all radially disposed on the second fluid control surface 130 of the movable valve plate 13.

Preferably, the first channel 101, the second channel 102 and the third channel 103 of the flat valve 10 are respectively disposed at the first extension part 122 of the first fluid control surface 120 of the fixed valve plate 12, and the fourth channel 104 and the fifth channel 105 are respectively disposed at the first edge part 123 of the first fluid control surface 120.

Preferably, the sixth channel 106 and the ninth channel 109 of the flat valve 10 are respectively disposed at the second extension portion 132 of the second fluid control surface 130 of the movable valve plate 13, and the seventh channel 107 and the eighth channel 108 are respectively disposed at the second edge portion 133 of the second fluid control surface 130 of the movable valve plate 13 and extend inwards from the second edge portion 133 to the second extension portion 132.

Preferably, the first channel 101 of the flat valve 10 extends downward and outward from the first fluid control surface 120 of the fixed valve plate 12, the second channel 102 extends downward and outward from the first fluid control surface 120 of the fixed valve plate 12, the third channel 103 extends downward and outward from the first fluid control surface 120 of the fixed valve plate 12, the fourth channel 104 extends downward and outward from the first fluid control surface 120 of the fixed valve plate 12, and the fifth channel 105 extends downward and outward from the first fluid control surface 120 of the fixed valve plate 12.

As shown in fig. 1 to 6 of the drawings, the valve body 11 of the flat valve 10 of the water treatment system according to the first preferred embodiment of the present invention has an inner wall 111, wherein the fixed valve plate 12 is adapted to be disposed in the inner cavity 110 with the first fluid control surface 120 facing upward, and the movable valve plate 13 is adapted to be disposed in the inner cavity 110 with the second fluid control surface 130 facing downward, wherein the inner cavity 110 is always in communication with the sixth channel 106. It should be noted that the fixed valve plate 12 of the flat valve 10 can be detachably disposed on the inner wall 111 of the valve body 11, or can be integrally formed with the inner wall 111 of the valve body 11 of the flat valve 10. It will be understood by those skilled in the art that when the stationary plate 12 is detachably disposed in the valve body 11, the stationary plate 12 and the valve body 11 maintain synchronization therebetween by a fixing mechanism, and the stationary plate 12 and the valve body 11 are fixed to each other. For example, the stationary plate 12 has a stopper protruding outward from the edge of the stationary plate 12, and the inner wall 111 of the valve body 11 has a stopper groove, wherein the stopper of the stationary plate 12 is configured to engage with the stopper groove of the inner wall 111 of the valve body 11 to ensure synchronization (or no relative rotation) between the stationary plate 12 and the valve body 11 and to ensure that each channel disposed on the stationary plate 12 communicates with a corresponding opening disposed on the valve body 11. It is understood that when the stationary valve plate 12 is detachably provided in the valve body 11, the stationary valve plate 12 may be separately manufactured. In other words, the stationary plate 12 can be made of a wear-resistant material, thereby increasing the service life of the stationary plate 12 (or the entire flat valve). Preferably, the first fluid control surface 120 of the stationary plate 12 is smoothed to reduce its roughness.

As shown in fig. 1 to 6 of the drawings, the flat valve 10 of the water treatment system according to the first preferred embodiment of the present invention further includes a flow guiding element 15, wherein the flow guiding element 15 forms a sewage channel 150, wherein the flow guiding element 15 is disposed to extend upward from the movable blade 13 and the sewage channel 150 of the flow guiding element 15 is respectively communicated with the seventh opening 1107 and the ninth channel 109 of the flat valve 10 (the seventh opening 1107 is disposed at the valve body 11 of the flat valve 10), or the sewage channel 150 is directly communicated with the seventh opening 1107 (the seventh opening 1107 is disposed at the movable blade 13 of the flat valve 10 and is communicated with the ninth channel 109), so that sewage or wastewater can flow out therefrom.

As shown in fig. 1 to 6 of the drawings, the planar valve 10 of the water treatment system according to the first preferred embodiment of the present invention further includes a driving element 18 extending upward from the movable valve plate 13, wherein the driving element 18 is configured to drive the movable valve plate 13 of the planar valve 10 to rotate relative to the fixed valve plate 12. Preferably, the drive element 18 is integrally formed with the deflector element 15. Alternatively, the driving element 18 and the deflector element 15 are two separate mechanisms.

As shown in fig. 1 to 6 of the drawings, the planar valve 10 of the water treatment system according to the first preferred embodiment of the present invention further includes a sealing element 17, wherein the sealing element 17 is disposed opposite to the driving element 18, wherein the sealing element 17 forms a first sealing surface 170, and the driving element 18 forms a second sealing surface 180, wherein the first sealing surface 170 of the sealing element 17 is disposed on the second sealing surface 180 of the driving element 18, so that when the driving element 18 rotates relative to the sealing element 17 to drive the movable plate 13 to rotate relative to the stationary plate 12, the driving element 18 and the sealing element 17 are sealed and prevent water leakage. Furthermore, the sealing element 17 is arranged to hold the driving element 18 in position, thereby holding the movable flap 13 in a preset position.

As shown in fig. 5A to 5D of the drawings, the diameter of the movable valve plate 13 of the flat valve 10 of the water treatment system according to the first preferred embodiment of the present invention is set to be slightly smaller than the diameter of the inner cavity 110 of the valve body 11, so that the sixth channel 106 of the flat valve 10 can be kept in communication with the inner cavity 110 of the valve body 11 through the water inlet 1061.

As shown in fig. 3 to 6, 8A to 8D, 13A and 15A of the drawings, the control device 16 of the flat valve 10 of the water treatment system according to the first preferred embodiment of the present invention is configured to drive the driving element 18 to rotate through a transmission mechanism 14, such as a transmission gear, according to a purge (or purge-soften) control command, so as to drive the movable valve plate 13 of the flat valve 10 to rotate relative to the fixed valve plate 12, thereby forming a first communication channel 1104 respectively communicating with the inner cavity 110 (or the sixth opening) and the first opening 1101 of the valve body 11 of the flat valve 10, a second communication channel 1002 respectively communicating with the third opening 1103 and the fourth opening of the valve body 11, and a third communication channel 1003 respectively communicating with the second opening 1102 and the fifth opening 1105 of the valve body 11, allowing raw water to enter the inner cavity 110 from the sixth opening of the valve body 11, flow into the purification device (or the first filter element) 20 through the first communication channel 1001 formed by the flat valve 10, the first opening 1101 of the valve body 11, and the first communication opening 201 of the purification device (or the first filter element) 20, the purified water obtained after the raw water is purified by the purification device (or the first filter element) 20 flows out from the second communication opening 202 of the purification device (or the first filter element) 20, and then the purified water is divided into two paths, wherein one path of the purified water can flow into the second filter element 30 through the first communication opening 301 of the second filter element 30, and flows out from the second communication opening 302 of the second filter element 30 after being treated by the second filter element 30, and then flows out through the third opening 1103 of the valve body 11, the second communication channel 1002, and the fourth opening 1104 of the valve body 11, and supplies the treated water to a user, another path of purified water flows into the second opening 1102 of the valve body 11, flows out from the fifth opening 1105 of the valve body 11 after passing through the third communicating passage 1003, and supplies the treated purified water to the user; as shown in fig. 3 to 6, 9A to 9B, 13B and 15B of the drawings, according to a second filter core backwashing control command, the driving element 18 is driven to rotate through the transmission mechanism 14, such as a transmission gear, so as to drive the movable valve plate 13 of the flat valve 10 to rotate relative to the fixed valve plate 12, thereby forming a fourth communication channel 1004 respectively communicated with the inner cavity 110 (or the sixth opening) and the third opening 1103 of the valve body 11 of the flat valve 10 and forming a fifth communication channel 1005 respectively communicated with the second opening 1102 and the seventh opening 1107 of the valve body 11, so as to allow raw water to flow from the sixth opening 1106 of the valve body 11 into the inner cavity 110 of the valve body 11, then flow into the third opening 1103 of the valve body 11 through the fourth communication channel 1004 formed by the flat valve 10, and then flow into the second filter core 30 through the second communication opening 302 of the second filter core 30, after the second filter element 30 is reversely flushed, the obtained sewage or wastewater flows out from the first communication opening 301 of the second filter element 30, then flows into the fifth communication channel 1005 of the flat valve 10 through the second opening 1102 of the valve body 11, and then flows out from the seventh opening 1107 of the flat valve 10; as shown in fig. 3 to 6, 10A to 10B, 13C and 15C of the drawings, according to a backwashing control command of a purification device (or a first filter element), the driving element 18 is driven to rotate through the transmission mechanism 14, such as a transmission gear, so as to drive the movable valve plate 13 of the flat valve 10 to rotate relative to the fixed valve plate 12, thereby forming a sixth communication channel 1006 respectively communicated with the inner cavity 110 (or the sixth opening) and the second opening 1102 of the valve body 11 and a seventh communication channel 1007 respectively communicated with the first opening 1101 and the seventh opening 1107 of the valve body 11, so as to allow raw water to flow from the sixth opening 1106 of the valve body 11 into the inner cavity 110 of the valve body 11, then flow into the second opening 1102 of the valve body 11 through the sixth communication channel 1006 formed by the flat valve 10, and then flow into the purification device (or the first filter element) 20 through the second communication opening 202 of the purification device (or the first filter element) 20, and after the purification apparatus (or the first filter element) 20 is reversely flushed, the obtained sewage or wastewater flows out of the first communication opening 201 of the purification apparatus (or the first filter element) 20, then flows into the seventh communication channel 1007 of the flat valve 10 through the first opening 1101 of the valve body 11, and then flows out of the seventh opening 1107 of the flat valve 10; as shown in fig. 3 to 6, 11, 13D and 15D of the drawings, according to a second filter core forward washing control command, the driving element 18 is driven to rotate through the transmission mechanism 14, such as a transmission gear, so as to drive the movable valve plate 13 of the flat valve 10 to rotate relative to the fixed valve plate 12, thereby forming an eighth communication channel 1008 respectively communicated with the inner cavity 110 (or the sixth opening) and the second opening 1102 of the valve body 11 and a ninth communication channel 1009 respectively communicated with the third opening 1103 and the seventh opening 1107 of the valve body 11, so as to allow raw water to flow into the inner cavity 110 of the valve body 11 from the sixth opening 1106 of the valve body 11, then flow into the second opening 1102 of the valve body 11 through the eighth communication channel 1008 formed by the flat valve 10, and then flow into the second filter core 30 through the first communication opening 301 of the second filter core 30, and the second filter element 30 is positively washed, and the obtained sewage or waste water flows out from the second communication opening 302 of the second filter element 30, then flows into the ninth communication channel 1009 of the flat valve 10 through the third opening 1103 of the valve body 11, and then flows out from the seventh opening 1107 of the flat valve 10; as shown in fig. 3 to 6, 12A to 12B, 13E and 15E of the drawings, according to a purifying device (or first filter element) forward washing control command, the driving element 18 is driven to rotate by the transmission mechanism 14, such as a transmission gear, so as to drive the movable valve plate 13 of the planar valve 10 to rotate relative to the fixed valve plate 12, thereby forming a tenth communication channel 10010 respectively communicated with the inner cavity 110 (or the sixth opening) of the valve body 11 and the first opening 1101 and an eleventh communication channel 10011 respectively communicated with the second opening 1102 and the seventh opening of the valve body 11, so as to allow raw water to flow from the sixth opening 1106 of the valve body 11 into the inner cavity 110 of the valve body 11, then flow into the first opening 1101 of the valve body 11 through the tenth communication channel 10010 formed by the planar valve 10, and then flow into the purifying device (or first filter element) 20 through the first communication opening 100201 of the purifying device (or first filter element) 20, and forward flushing the purification apparatus (or the first filter element) 20, the obtained sewage or wastewater flows out from the second communication opening 202 of the purification apparatus (or the first filter element) 20, then flows into the eleventh communication channel 10011 of the planar valve 10 through the second opening 1102 of the valve body 11, and then flows out from the seventh opening 1107 of the planar valve 10.

It should be noted that the control command, such as a purification (or purification-softening) control command, a second filter element backwashing control command, a purification device (or first filter element) backwashing control command, a second filter element forward washing control command, a purification device (or first filter element) forward washing control command, etc., may be preset in a control module of the control device 16, may be received from a control terminal through an electronic communication network, or may be input by a user through an input interface. For example, when the water treatment system of the present invention is configured to have an input interface for the planar valve 10, such as a touch pad or a control button, a user can send the control command to the control module of the control device 16 through a touch panel or a corresponding control button, so that the control module of the control device 16 controls the motor of the control device 16 to rotate, thereby driving the driving element 18 to rotate through a transmission mechanism 14.

[ upward pollution discharge-discontinuous water supply ]

Referring to fig. 16A to 19E of the drawings, an alternative implementation of the flat valve 10A of the water treatment system according to the first preferred embodiment of the present invention is illustrated, wherein the flat valve 10A has a first channel 101A, a second channel 102A, a third channel 103A, a fourth channel 104A, a fifth channel 105A, a sixth channel 106A, a seventh channel 107A, an eighth channel 108A and a ninth channel 109A, wherein the first channel 101A, the second channel 102A, the third channel 103A, the fourth channel 104A and the fifth channel 105A are respectively disposed on the fixed plate 12A and respectively extend from the first fluid control surface 120A of the fixed plate 12; the sixth channel 106A, the seventh channel 107A, the eighth channel 108A, and the ninth channel 109A are respectively disposed on the movable valve plate 13A and respectively extend from the second fluid control surface 130A of the movable valve plate 13A, the first channel 101A is communicated with the first opening 1101A, the second channel 102A is communicated with the second opening 1102A, the third channel 103A is communicated with the third opening 1103A, the fourth channel 104A is communicated with the fourth opening 1104A, the fifth channel 105A is communicated with the fifth opening 1105A, the sixth channel 106A is communicated with the inner cavity 110A of the valve body 11A, and the ninth channel 109A is communicated with the seventh opening 1107A of the flat valve 10A.

as shown in fig. 16A to 19E of the drawings, when the flat valve 10A is in the second, third, fourth and fifth operating positions, one end ports of the fourth passage 104A and the fifth passage 105A of the flat valve 10A are respectively closed by the movable valve plate 13A, and the other end ports of the fourth passage 104A and the fifth passage 105A of the flat valve 10A are respectively communicated with the fourth opening 1104 and the fifth opening 1105 of the valve body 11A. Therefore, when the planar valve 10A of the water treatment system according to the first preferred embodiment of the present invention is located at the second working position, the third working position, the fourth working position and the fifth working position, the twelfth communicating channel 10012 and the thirteenth communicating channel 10013 are no longer formed (or cannot be formed) by the planar valve 10A. In other words, when the flat valve 10A is in the second, third, fourth and fifth operating positions, the flat valve 10A does not supply the water to be treated (or the raw water) through the fourth and fifth openings 1104A and 1105A.

[ DOWN-DRAINAGE-CONTINUOUS WATER SUPPLY ]

Referring to fig. 20 to 34E of the drawings, a water treatment system according to a second preferred embodiment of the present invention is illustrated, which is adapted to perform a purification (purifying-softening) treatment of raw water or water to be treated, wherein the water treatment system includes a fluid valve 10B and at least two water treatment devices (a first water treatment device and a second water treatment device), wherein each of the water treatment devices and the fluid valve 10B are communicated with each other through a corresponding water path. It is worth mentioning that the type of water treatment device is not limited in the water treatment system of the present invention, for example in one example the water treatment devices are each purification devices, and in another example at least one water treatment device is a purification device and the other water treatment device is a softening device. Preferably, the first water treatment device of the water treatment system according to the second preferred embodiment of the present invention includes at least one first filter element 20B, and the second water treatment device includes at least one second filter element 30B. Accordingly, the first filter element 20B of the water treatment system according to the second preferred embodiment of the present invention is configured to perform a primary water treatment, and the second filter element 30B is configured to perform a secondary water treatment. It is understood that the first filter element 20B can be any water filtering or purifying device having two communication openings, such as the first communication opening 201B and the second communication opening 202B, such as a pre-filter, an ultra-filter, an activated carbon filter, a softening filter element (or softening tank), and the like. Thus, the water treatment material or device mentioned herein may be provided as a screen, activated carbon, ultrafiltration thread, regenerated resin, PP wool, and possibly even as an RO membrane, depending on the actual application. Similarly, the second filter element 30B can be any water treatment device having two communication openings, such as the first communication opening 301B and the second communication opening 302B, such as a pre-filter, an ultrafiltration filter, an activated carbon filter, a softening filter element (or softening tank), and the like. Thus, the water treatment material or device mentioned herein may be provided as a screen, activated carbon, ultrafiltration thread, PP wool, regenerated resin, and possibly even as an RO membrane, depending on the actual application.

It is noted that in the following description, the water treatment system of the present invention will be disclosed and described by taking the first water treatment device (or first filter element 20B) as a purification device and the second water treatment device (or second filter element 30B) as a softening device. It will be understood by those skilled in the art that the implementation of one such water treatment device (e.g., a first water treatment device) as a purification device and another water treatment device (e.g., a second water treatment device) as a softening device is merely exemplary and should not be taken as limiting the content and scope of the water treatment system of the present invention.

20-34E of the drawings, the fluid valve 10B according to the second preferred embodiment of the present invention comprises a valve body 11B and a valve spool 1B, wherein the valve body 11B defines an inner chamber 110B, a first opening 1101B, a second opening 1102B, a third opening 1103B, a fourth opening 1104B, a fifth opening 1105B, a sixth opening 1106B and a seventh opening (or blowdown opening) 1107B, wherein the valve spool 1B is disposed in the inner chamber 110B, wherein the water treatment system according to the second preferred embodiment of the present invention has a first operating state, a second operating state, a third operating state, a fourth operating state and a fifth operating state, wherein when the water treatment system is in the first operating state, the fluid valve 10B defines a first communication channel 1001B communicating with the first opening 1106B and the sixth opening 1106B of the valve body 11B, respectively, A second communication passage 1002B communicating with the third opening 1103B and the fourth opening 1104B of the valve body 11B, respectively, and a third communication passage 1003B communicating with the second opening 1102B and the fifth opening 1105B of the valve body 11B, respectively; when the water treatment system is in the second operating state, the fluid valve 10B forms a fourth communicating channel 1004B communicating with the third opening 1103B and the sixth opening 1106B of the valve body 11B, respectively, and a fifth communicating channel 1005B communicating with the second opening 1102B and the seventh opening 1107B of the valve body 11B, respectively; when the water treatment system is in the third operating state, the fluid valve 10B defines a sixth communication channel 1006B in communication with the second opening 1102B and the sixth opening 1106B of the valve body 11B, respectively, and a seventh communication channel 1007B in communication with the first opening 1101B and the seventh opening 1107B of the valve body 11B, respectively; when the water treatment system is in the fourth operating state, the fluid valve 10B forms an eighth communicating channel 1008B communicating with the second opening 1102B and the sixth opening 1106B of the valve body 11B, respectively, and a ninth communicating channel 1009B communicating with the third opening 1103B and the seventh opening 1107B of the valve body 11B, respectively; when the water treatment system is in the fifth operating state, the fluid valve 10B forms a tenth communication channel 10010B in communication with the first opening 1101B and the sixth opening 1106B of the valve body 11B, respectively, and an eleventh communication channel 10011B in communication with the second opening 1102B and the seventh opening 1107B of the valve body 11B, respectively. Preferably, when the water treatment system is in the second operating state, the third operating state, the fourth operating state and the fifth operating state, the water treatment system further forms a twelfth communication channel 10012B respectively communicated with the fourth opening 1104B and the sixth opening 1106B of the valve body 11B and a thirteenth communication channel 10013B respectively communicated with the fifth opening 1105B and the sixth opening 1106B of the valve body 11B.

Referring to fig. 20 to 25 of the drawings, a fluid valve 10B of the water treatment system according to a second preferred embodiment of the present invention is a planar valve 10B, wherein the planar valve 10B further includes a movable plate 13B and a fixed plate 12B, wherein the fixed plate 12B has a first fluid control surface 120B, the movable plate 13B has a second fluid control surface 130B, wherein the movable plate 13B and the fixed plate 12B are both disposed in the inner cavity 110B, wherein the second fluid control surface 130B of the movable plate 13B is disposed on the first fluid control surface 120B of the fixed plate 12B, and the movable plate 13B is disposed to be rotatable relative to the fixed plate 12B, wherein the purification device (or the first filter element) 20B has a first communication opening 201B and a second communication opening 202B, wherein the second filter element 30B has a first communication opening 301B and a second communication opening 302B, the inner cavity 110B of the valve body 11B is communicated with the sixth opening 1106B, the first communication opening 201B of the purifying device (or the first filter element) 20B is communicated with the first opening 1101B of the valve body 11B, the second communication opening 202B of the purifying device (or the first filter element) 20B and the first communication opening 301B of the second filter element 30B are both communicated with the second opening 1102B of the valve body 11B, and the second communication opening 302B of the second filter element 30B is communicated with the third opening 1103B of the valve body 11B. Therefore, when the fluid valve 10B is a flat valve, the spool 1B of the fluid valve 10B includes the movable valve plate 13B and the fixed valve plate 12B.

It can be understood by those skilled in the art that the planar valve 10B of the water treatment system of the present invention may further have a connection mechanism, such as a connection screw, a snap joint, etc., disposed on the valve body 11B, so that the planar valve 10B can be connected with other structural components of the water treatment system, such as the purification device (or the first filter element) 20B, the second filter element 30B, etc., to guide the water flow to the respective communication channels formed by the purification device (or the first filter element) 20B, the second filter element 30B and the planar valve 10B.

As shown in fig. 27A to 31B and fig. 32A to 32E of the drawings, the water treatment system according to the second preferred embodiment of the present invention has a first working state, a second working state, a third working state, a fourth working state and a fifth working state, wherein when the water treatment system is in the first working state, the movable valve plate 13B and the fixed valve plate 12B of the flat valve 10B form the first communication passage 1001B respectively communicated with the first opening 1101B and the sixth opening 1106B of the valve body 11B (or the inner cavity 110B), the second communication passage 1002B respectively communicated with the third opening 1103B and the fourth opening 1104B of the valve body 11B and the third communication passage 1003B respectively communicated with the second opening 1102B and the fifth opening 1105B of the valve body 11B; when the water treatment system is in the second working state, the movable valve plate 13B and the fixed valve plate 12B of the flat valve 10B form the fourth communication channel 1004B respectively communicated with the third opening 1103B and the sixth opening 1106B (or the inner cavity 110B) of the valve body 11B and the fifth communication channel 1005B respectively communicated with the second opening 1102B and the seventh opening 1107B of the valve body 11B; when the water treatment system is in the third working state, the movable valve plate 13B and the fixed valve plate 12B of the flat valve 10B form the sixth communication channel 1006B respectively communicated with the second opening 1102B and the sixth opening 1106B (or the inner cavity 110B) of the valve body 11B and the seventh communication channel 1007B respectively communicated with the first opening 1101B and the seventh opening 1107B of the valve body 11B; when the water treatment system is in the fourth working state, the movable valve plate 13B and the fixed valve plate 12B of the planar valve 10B form the eighth communicating channel 1008B respectively communicated with the second opening 1102B and the sixth opening 1106B (or the inner cavity 110B) of the valve body 11B and the ninth communicating channel 1009B respectively communicated with the third opening 1103B and the seventh opening 1107B of the valve body 11B; when the water treatment system is in the fifth working state, the movable valve plate 13B and the fixed valve plate 12B of the planar valve 10B form the tenth communication channel 10010B respectively communicated with the first opening 1101B and the sixth opening 1106B (or the inner cavity 110B) of the valve body 11B and the eleventh communication channel 10011B respectively communicated with the second opening 1102B and the seventh opening 1107B of the valve body 11B. Preferably, when the water treatment system is in the second operating state, the third operating state, the fourth operating state and the fifth operating state, the movable valve plate 13B and the fixed valve plate 12B of the planar valve 10B form the twelfth communicating channel 10012B respectively communicated with the fourth opening 1104B and the sixth opening 1106B (or the inner cavity 110B) of the valve body 11B and the thirteenth communicating channel 10013B respectively communicated with the fifth opening 1105B and the sixth opening 1106B (or the inner cavity 110B) of the valve body 11B.

As shown in fig. 27A to 27D, 32A and 34A of the drawings, when the water treatment system according to the second preferred embodiment of the present invention is in the first operation state, the first communication passage 1001B formed by the flat valve 10B communicates with the first opening 1101B and the sixth opening 1106B (or the inner chamber 110B) of the valve body 11B, respectively, the second communication passage 1002B communicates with the third opening 1103B and the fourth opening 1104B of the valve body 11B, respectively, and the third communication passage 1003B communicates with the second opening 1102B and the fifth opening 1105B of the valve body 11B, respectively, so as to allow raw water to flow from the sixth opening 1106B of the valve body 11B into the inner chamber 110B of the valve body 11B, and then to flow into the first opening 201B of the purification apparatus (or the first communication passage 1003B of the flat valve 10B, the first opening 1001B of the valve body 11B, and the first opening 201B of the purification apparatus (or the first filter cartridge 20B) (or the first purification apparatus 201B) (or the first communication cartridge 201B) 20B, the raw water flows out from the second communication opening 202B of the purification device (or the first filter element) 20B after being purified (or treated) by the purification device (or the first filter element) 20B, the water treated by the purification device (or the first filter element) 20B flows into the second filter element 30B through the first communication opening 301B of the second filter element 30B to be further treated by the second filter element 30B, the water treated by the second filter element 30B flows out through the second communication opening 302B of the second filter element 30B, then flows through the third opening 1103B of the valve body 11B, the second communication passage 1002B of the flat valve 10B, and finally flows out through the fourth opening 1104B of the valve body 11B and supplies the water treated by the purification device (or the first filter element) 20B and the second filter element 30B to a user. Preferably, the second communication opening 202B of the purification apparatus (or the first filter element) 20B is sequentially communicated with the second opening 1102B of the valve body 11B, the third communication passage 1003B of the planar valve 10B and the fifth opening 1105B of the valve body 11B, so that the water treated by the purification apparatus (or the first filter element) 20B flows out from the second communication opening 202B of the purification apparatus (or the first filter element) 20B, sequentially passes through the second opening 1102B of the valve body 11B, the third communication passage 1003B of the planar valve 10B, and finally flows out through the fifth opening 1105B of the valve body 11B and supplies the water treated by the purification apparatus (or the first filter element) 20B to a user. Therefore, when the water treatment system is in the first operation state, the water treatment system of the present invention can simultaneously provide the user with the water separately treated by the purification device (or the first filter element) 20B and the second filter element 30B. Accordingly, the first operating state of the water treatment system corresponds to a purification (or purification-softening) operating state of the water treatment system. Therefore, when the water treatment system is in the first working state, the sixth opening 1106B of the valve body 11B (or the inner cavity 110B of the valve body 11B), the first opening 1101B of the valve body 11B, the first communication opening 201B of the purification device (or the first filter element) 20B, the second communication opening 202B of the purification device (or the first filter element) 20B, the first communication opening 301B of the second filter element 30B, the second communication opening 302B of the second filter element 30B, the third opening 1103B of the valve body 11B and the fourth opening 1104B of the valve body 11B are sequentially communicated, so as to form a water flow path connecting the purification device (or the first filter element) 20B and the second filter element 30B in series, so that raw water can flow from the purification device (or the first filter element) 20B to the second filter element 30B and be sequentially treated by the purification device (or the first filter element 20B and the second filter element 30B. Accordingly, when the water treatment system is in the first operating state, the sixth opening 1106B of the valve body 11B (or the inner cavity 110B of the valve body 11B), the first opening 1101B of the valve body 11B, the first communication opening 201B of the purification device (or the first filter cartridge) 20B, the second communication opening 202B of the purification device (or the first filter cartridge) 20B, the second opening 1102B of the valve body 11B and the fifth opening 1105B of the valve body 11B are communicated in sequence, thereby forming a water flow path, so that raw water can flow through the purification device (or the first filter cartridge) 20B and be treated by the purification device (or the first filter cartridge) 20B. The direction of the arrows in fig. 32A indicate the direction of water flow.

As shown in fig. 28A to 28B, 32B and 34B of the drawings, when the water treatment system according to the second preferred embodiment of the present invention is in the second operation state, the fourth communication channel 1004B formed by the flat valve 10B is respectively communicated with the third opening 1103B and the sixth opening 1106B (or the inner cavity 110B) of the valve body 11B, the fifth communication channel 1005B is respectively communicated with the second opening 1102B and the seventh opening 1107B of the valve body 11B, so as to allow raw water to flow from the sixth opening 1106B of the valve body 11B into the inner cavity 110B of the valve body 11B, then flow into the third opening 1103B of the valve body 11B through the fourth communication channel 1004B formed by the flat valve 10B, flow into the second filter element 30B through the second communication opening 302B of the second filter element 30B, and soften material (or water treatment material) in the second filter element 30B, such as softened resin, etc., and the resultant sewage or wastewater flows out of the first communication opening 301B of the second cartridge 30B after reverse flushing, then flows through the second opening 1102B of the valve body 11B into the fifth communication passage 1005B of the flat valve 10B, and then flows out of the seventh opening 1107B of the valve body 11B. In other words, the water treatment system of the present invention can control the back flushing of the second filter element 30B when the water treatment system is in the second operational state. Accordingly, the second operating condition of the water treatment system corresponds to a second filter element backwashing operating condition of the water treatment system. Therefore, when the water treatment system is in the second working state, the sixth opening 1106B of the valve body 11B (or the inner cavity 110B of the valve body 11B), the third opening 1103B of the valve body 11B, the second through opening 302B of the second filter element 30B, the first through opening 301B of the second filter element 30B, the second opening 1102B of the valve body 11B and the seventh opening 1107B of the valve body 11B are sequentially communicated, so as to form a water flow path, so that raw water can flow through the second filter element 30B and reversely flush the second filter element 30B by the raw water, and the obtained sewage or wastewater flows out from the seventh opening 1107B of the valve body 11B. The direction of the arrows in fig. 32B indicate the direction of water flow.

Preferably, the twelfth communication channel 10012B formed by the flat valve 10B is respectively communicated with the fourth opening 1104B and the sixth opening 1106B (or the inner cavity 110B) of the valve body 11B, and the thirteenth communication channel 10013B formed by the flat valve 10B is respectively communicated with the fifth opening 1105B and the sixth opening 1106B (or the inner cavity 110B) of the valve body 11B, so as to allow raw water to flow from the sixth opening 1106B of the valve body 11B into the inner cavity 110B of the valve body 11B, and then flow out and supply raw water to a user through the fourth opening 1104B and the fifth opening 1105B of the valve body 11B through the twelfth communication channel 10012B and the thirteenth communication channel 10013B formed by the flat valve 10B, respectively. That is, when the water treatment system is in the second working state, the water treatment system can continuously supply raw water to a user so as to avoid water supply interruption. That is, when the water treatment system of the present invention is in the second operating state, the valve body 11B forms a first fluid distribution space 11101B which is respectively communicated with the sixth opening 1106B, the third opening 1103B, the fourth opening 1104B and the fifth opening 1105B of the valve body 11B, so that when raw water enters the inner cavity 110B of the valve body 11B from the sixth opening 1106B of the valve body 11B and further flows into the first fluid distribution space 11101B, the first fluid distribution space 11101B can sequentially guide the raw water into the third opening 1103B, the fourth opening 1104B and the fifth opening 1105B of the valve body 11B, so that the raw water flowing into the third opening 1103B of the valve body 11B can further flow into the second filter element 30B through the second conducting opening 302B of the second filter element 30B to realize the back flushing of the second filter element 30B, accordingly, the raw water flowing into the fourth and fifth openings 1104B and 1105B of the valve body 11B can be supplied to the user. That is, when the water treatment system of the present invention performs the back flushing of the second filter element 30B, the water treatment system can continuously provide the raw water to the user to avoid the interruption of the water supply.

As shown in fig. 29A to 29B, fig. 32C and fig. 34C of the drawings, when the water treatment system according to the second preferred embodiment of the present invention is in the third operating state, the sixth communication channel 1006B formed by the flat valve 10B is respectively communicated with the second opening 1102B and the sixth opening 1106B (or the inner cavity 110B) of the valve body 11B, the seventh communication channel 1007B is respectively communicated with the first opening 1101B and the seventh opening 1107B of the valve body 11B, so as to allow raw water to flow into the inner cavity 110B of the valve body 11B from the sixth opening 1106B of the valve body 11B, then flow into the second opening 1102B of the valve body 11B through the sixth communication channel 1006B formed by the flat valve 10B, and flow into the purification device (or the first filter element) 20B through the second communication opening 202B of the purification device (or the first filter element) 20B, and after the purification device (or the first filter element) 20B is reversely flushed, the obtained sewage or wastewater flows out from the first communication opening 201B of the purification device (or the first filter element) 20B, then flows through the first opening 1101B of the valve body 11B into the seventh communication channel 1007B of the flat valve 10B, and then flows out from the seventh opening 1107B of the valve body 11B. In other words, when the water treatment system is in the third operating state, the water treatment system of the present invention can control the back flushing of the purification device (or the first filter element) 20B. Accordingly, the third operating state of the water treatment system corresponds to the backwashing operating state of the purification device (or the first filter element) of the water treatment system. Therefore, when the water treatment system is in the third operating state, the sixth opening 1106B of the valve body 11B (or the inner cavity 110B of the valve body 11B), the second opening 1102B of the valve body 11B, the second communication opening 202B of the purification device (or the first filter element) 20B, the first communication opening 201B of the purification device (or the first filter element) 20B, the first opening 1101B of the valve body 11B and the seventh opening 1107B of the valve body 11B are sequentially communicated, so that a water flow passage is formed, so that raw water can flow through the purification device (or the first filter element) 20B and reversely flush the purification device (or the first filter element) 20B by the raw water, and the obtained sewage or wastewater flows out from the seventh opening 1107B of the valve body 11B. The direction of the arrows in fig. 32C indicate the direction of water flow.

Preferably, the twelfth communication channel 10012B formed by the flat valve 10B is respectively communicated with the fourth opening 1104B and the sixth opening 1106B (or the inner cavity 110B) of the valve body 11B, and the thirteenth communication channel 10013B formed by the flat valve 10B is respectively communicated with the fifth opening 1105B and the sixth opening 1106B (or the inner cavity 110B) of the valve body 11B, so as to allow raw water to flow from the sixth opening 1106B of the valve body 11B into the inner cavity 110B of the valve body 11B, and then flow out and supply raw water to a user through the fourth opening 1104B and the fifth opening 1105B of the valve body 11B through the twelfth communication channel 10012B and the thirteenth communication channel 10013B formed by the flat valve 10B, respectively. That is, when the water treatment system is in the third operating state, the water treatment system can continuously supply raw water to a user to avoid water supply interruption. That is, when the water treatment system of the present invention is in the third operating state, the valve body 11B forms a second fluid distribution space 11102B which is respectively communicated with the sixth opening 1106B, the second opening 1102B, the fourth opening 1104B and the fifth opening 1105B of the valve body 11B, so that when the raw water enters the inner cavity 110B of the valve body 11B from the sixth opening 1106B of the valve body 11B and further flows into the second fluid distribution space 11102B, the second fluid distribution space 11102B can sequentially guide the raw water into the second opening 1102B, the fourth opening 1104B and the fifth opening 1105B of the valve body 11B, so that the raw water flowing into the second opening 1102B of the valve body 11B can further flow into the purification device (or the first filter element) 20B through the second communication opening 202B of the purification device (or the first filter element) 20B, to realize the back flushing of the purification device (or the first filter element) 20B, and accordingly, the raw water flowing into the fourth opening 1104B and the fifth opening 1105B of the valve body 11B can be supplied to the user. That is, when the water treatment system of the present invention performs the back flushing of the purification device (or the first filter element) 20B, the water treatment system can still continuously provide the raw water to the user to avoid the interruption of the water supply.

As shown in fig. 30, 32D and 34D of the drawings, when the water treatment system according to the second preferred embodiment of the present invention is in the fourth operating state, the eighth communication channel 1008B formed by the flat valve 10B is respectively communicated with the second opening 1102B and the sixth opening 1106B (or the inner cavity 110B) of the valve body 11B, the ninth communication channel 1009B formed by the flat valve 10B is respectively communicated with the third opening 1103B and the seventh opening 1107B of the valve body 11B, so as to allow raw water to flow into the inner cavity 110B of the valve body 11B from the sixth opening 1106B of the valve body 11B, then flow into the first through opening 301B of the second filter element 30B through the eighth communication channel 1008B formed by the flat valve 10B, and flow out from the second through opening 302B of the second filter element 30B after forward flushing of the second filter element 30B, then flows through the third opening 1103B of the valve body 11B into the ninth communication passage 1009B of the flat valve 10B, and then flows out of the seventh opening 1107B of the valve body 11B. In other words, the water treatment system of the present invention can control the forward flushing of the second filter element 30B when the water treatment system is in the fourth operating state. Accordingly, the fourth operating condition of the water treatment system corresponds to a second cartridge forward wash operating condition of the water treatment system. Therefore, when the water treatment system is in the fourth operating state, the sixth opening 1106B of the valve body 11B (or the inner cavity 110B of the valve body 11B), the second opening 1102B of the valve body 11B, the first through opening 301B of the second filter element 30B, the second through opening 302B of the second filter element 30B, the third opening 1103B of the valve body 11B and the seventh opening 1107B of the valve body 11B are sequentially communicated, so as to form a water flow path, so that raw water can flow through the second filter element 30B and flush the second filter element 30B with the raw water, and the obtained sewage or wastewater flows out from the seventh opening 1107B of the valve body 11B. The direction of the arrows in fig. 32D indicate the direction of water flow.

Preferably, the twelfth communication channel 10012B formed by the flat valve 10B is respectively communicated with the fourth opening 1104B and the sixth opening 1106B (or the inner cavity 110B) of the valve body 11B, and the thirteenth communication channel 10013B formed by the flat valve 10B is respectively communicated with the fifth opening 1105B and the sixth opening 1106B (or the inner cavity 110B) of the valve body 11B, so as to allow raw water to flow from the sixth opening 1106B of the valve body 11B into the inner cavity 110B of the valve body 11B, and then flow out and supply raw water to a user through the fourth opening 1104B and the fifth opening 1105B of the valve body 11B through the twelfth communication channel 10012B and the thirteenth communication channel 10013B formed by the flat valve 10B, respectively. That is, when the water treatment system is in the fourth operating state, the water treatment system can continuously supply raw water to a user so as to avoid water supply interruption. That is, when the water treatment system of the present invention is in the fourth operating state, the valve body 11B forms a third fluid distribution space 11103B respectively communicated with the sixth opening 1106B, the second opening 1102B, the fourth opening 1104B and the fifth opening 1105B of the valve body 11B, so that when the raw water enters the inner cavity 110B of the valve body 11B from the sixth opening 1106B of the valve body 11B and further flows into the third fluid distribution space 11103B, the third fluid distribution space 03B can guide the raw water into the second opening 1102B, the fourth opening 1104B and the fifth opening 1105B of the valve body 11B in sequence, so that the raw water 11111103B flowing into the second opening 1102B of the valve body 11B can further flow into the second filter element 30B through the first communication opening 301B of the second filter element 30B to realize the forward flushing of the second filter element 30B, accordingly, the raw water flowing into the fourth and fifth openings 1104B and 1105B of the valve body 11B can be supplied to the user. That is, when the water treatment system of the present invention performs the forward flushing of the second filter element 30B, the water treatment system can continuously provide the raw water to the user to avoid the interruption of the water supply.

As shown in fig. 31A to 31B, 32E and 34E of the drawings, when the water treatment system according to the second preferred embodiment of the present invention is in the fifth operating state, the tenth communication channel 10010B formed by the flat valve 10B is respectively communicated with the first opening 1101B and the sixth opening 1106B (or the inner cavity 110B) of the valve body 11B, the eleventh communication channel 10011B formed by the flat valve 10B is respectively communicated with the second opening 1102B and the seventh opening 1107B (or the inner cavity 110B) of the valve body 11B, so as to allow raw water to flow from the sixth opening 1106B of the valve body 11B into the inner cavity 110B of the valve body 11B, and then flow through the tenth communication channel 10010B formed by the flat valve 10B into the first communication opening 201B of the purification apparatus (or the first filter element) 20B, and to positively flush the purification apparatus (or the first filter element) 20B, the resulting sewage or wastewater flows out of the second communication opening 202B of the purification apparatus (or the first filter element) 20B, then flows through the second opening 1102B of the valve body 11B into the eleventh communication passage 10011B of the flat valve 10B, and then flows out of the seventh opening 1107B of the valve body 11B. In other words, when the water treatment system is in the fifth operating state, the water treatment system of the present invention can control the forward flushing of the purification device (or the first filter element). Accordingly, the fifth operating condition of the water treatment system corresponds to a forward washing operating condition of the purification device (or the first filter element) of the water treatment system. Therefore, when the water treatment system is in the fifth working state, the sixth opening 1106B of the valve body 11B (or the inner cavity 110B of the valve body 11B), the first opening 1101B of the valve body 11B, the first communication opening 201B of the purification device (or the first filter element) 20B, the second communication opening 202B of the purification device (or the first filter element) 20B, the second opening 1102B of the valve body 11B and the seventh opening 1107B of the valve body 11B are sequentially communicated, so that a water flow passage is formed, so that raw water can flow through the purification device (or the first filter element) 20B and the purification device (or the first filter element) 20B is being washed by the raw water, and the obtained sewage or wastewater flows out from the seventh opening 1107B of the valve body 11B. The direction of the arrows in fig. 32E indicate the direction of water flow.

Preferably, the twelfth communication channel 10012B formed by the flat valve 10B is respectively communicated with the fourth opening 1104B and the sixth opening 1106B (or the inner cavity 110B) of the valve body 11B, and the thirteenth communication channel 10013B formed by the flat valve 10B is respectively communicated with the fifth opening 1105B and the sixth opening 1106B (or the inner cavity 110B) of the valve body 11B, so as to allow raw water to flow from the sixth opening 1106B of the valve body 11B into the inner cavity 110B of the valve body 11B, and then flow out and supply raw water to a user through the fourth opening 1104B and the fifth opening 1105B of the valve body 11B through the twelfth communication channel 10012B and the thirteenth communication channel 10013B formed by the flat valve 10B, respectively. That is, when the water treatment system is in the fifth operating state, the water treatment system can continuously supply raw water to a user to avoid water supply interruption. That is, when the water treatment system of the present invention is in the fifth operating state, the valve body 11B forms a fourth fluid distribution space 11104B which is respectively communicated with the sixth opening 1106B, the first opening 1101B, the fourth opening 1104B and the fifth opening 1105B of the valve body 11B, so that when the raw water enters the inner cavity 110B of the valve body 11B from the sixth opening 1106B of the valve body 11B and further flows into the fourth fluid distribution space 11104B, the fourth fluid distribution space 11104B can sequentially guide the raw water into the first opening 1104B, the fourth opening 1104B and the fifth opening 1105B of the valve body 11B, so that the raw water flowing into the first opening 1101B of the valve body 11B can further flow into the purification apparatus (or the first filter element) 20B through the first communication opening B of the purification apparatus (or the first filter element) 20B, to achieve the forward flushing of the purification device (or the first filter element) 20B, and accordingly, the raw water flowing into the fourth opening 1104B and the fifth opening 1105B of the valve body 11B can be supplied to the user. That is, when the water treatment system of the present invention performs the forward flushing of the purification device (or the first filter element) 20B, the water treatment system can still continuously provide the raw water to the user to avoid the interruption of the water supply.

Accordingly, as shown in fig. 27A to 31B and fig. 32A to 32E of the drawings, the fluid valve (or planar valve) 10B of the water treatment system according to the second preferred embodiment of the present invention has a first operating position, a second operating position, a third operating position, a fourth operating position and a fifth operating position, wherein when the fluid valve (or planar valve) 10B is in the first operating position, the valve spool 1B of the fluid valve 10B forms the first communicating channel 1001B, the second communicating channel 1002B and the third communicating channel 1003B; when the fluid valve (or planar valve) 10B is in the second operating position, the spool 1B of the fluid valve 10B forms the fourth communication passage 1004B and the fifth communication passage 1005B; when the fluid valve (or planar valve) 10B is in the third operating position, the spool 1B of the fluid valve 10B forms the sixth communication passage 1006B and the seventh communication passage 1007B; when the fluid valve (or planar valve) 10B is in the fourth operating position, the spool 1B of the fluid valve 10B forms the eighth communication passage 1008B and the ninth communication passage 1009B; when the fluid valve (or planar valve) 10B is in the fifth operating position, the spool 1B of the fluid valve 10B forms the tenth communication passage 10010B and the eleventh communication passage 10011B. More preferably, when the fluid valve (or planar valve) 10B is in the second operating position, the third operating position, the fourth operating position and the fifth operating position, the spool 1B of the fluid valve 10B further forms the twelfth communication passage 10012B and the thirteenth communication passage 10013B. Accordingly, when the fluid valve (or planar valve) 10B is in the second operating position, the third operating position, the fourth operating position, and the fifth operating position, the spool 1B of the fluid valve 10B further forms the first fluid distribution space 11101B, the second fluid distribution space 11102B, the third fluid distribution space 11103B, and the fourth fluid distribution space 11104B.

As shown in fig. 26A to 26F and fig. 33A to 33D of the drawings, the flat valve 10B of the water treatment system according to the second preferred embodiment of the present invention has a first channel 101B, a second channel 102B, a third channel 103B, a fourth channel 104B, a fifth channel 105B, a sixth channel 106B, a seventh channel 107B, an eighth channel 108B, a ninth channel 109B and a tenth channel 1010B, wherein the first channel 101B, the second channel 102B, the third channel 103B, the fourth channel 104B, the fifth channel 105B and the tenth channel 1010B are respectively disposed on the fixed valve plate 12B and respectively extend from the first fluid control surface 120B of the fixed valve plate 12B; the sixth channel 106B, the seventh channel 107B, the eighth channel 108B, and the ninth channel 109B are respectively disposed on the movable valve plate 13B and respectively extend from the second fluid control surface 130B of the movable valve plate 13B, the first channel 101B is communicated with the first opening 1101B, the second channel 102B is communicated with the second opening 1102B, the third channel 103B is communicated with the third opening 1103B, the fourth channel 104B is communicated with the fourth opening 1104B, the fifth channel 105B is communicated with the fifth opening 1105B, the sixth channel 106B is communicated with the inner cavity 110B of the valve body 11B, the ninth channel 109B is communicated with the tenth channel 1107B, and the tenth channel 1010B is communicated with the seventh opening B. In addition, in order to ensure that the water in the inner cavity 110B of the valve body 11B enters the sixth passage 106B, the sixth passage 106B is provided to be always in communication with the inner cavity 110B of the valve body 11B through an inlet port 1061B which is always in communication with the outside space.

As shown in fig. 33A to 34E of the drawings, the movable valve plate 13B of the flat valve 10B of the water treatment system according to the second preferred embodiment of the present invention can rotate relative to the fixed valve plate 12B, so that the flat valve 10B has the first working position, the second working position, the third working position, the fourth working position and the fifth working position, wherein when the flat valve 10B is in the first working position, the sixth channel 106B of the flat valve 10B is communicated with the first channel 101B, the seventh channel 107B is communicated with the third channel 103B and the fourth channel 104B, and the eighth channel 108B is communicated with the second channel 102B and the fifth channel 105B, respectively; when the flat valve 10B is in the second working position, the sixth channel 106B is communicated with the third channel 103B, and the ninth channel 109B is communicated with the second channel 102B and the tenth channel 1010B, respectively; when the flat valve 10B is in the third operating position, the sixth passage 106B communicates with the second passage 102B, and the ninth passage 109B communicates with the first passage 101B and the tenth passage 1010B, respectively; when the flat valve 10B is in the fourth working position, the sixth channel 106B is communicated with the second channel 102B, and the ninth channel 109B is communicated with the third channel 103B and the tenth channel 1010B, respectively; when the flat valve 10B is in the fifth operating position, the sixth passage 106B communicates with the first passage 101B, and the ninth passage 109B communicates with the second passage 102B and the tenth passage 1010B, respectively. Preferably, when the planar valve 10B is in the second working position, the third working position, the fourth working position and the fifth working position, the fourth passage 104B and the fifth passage 105B are respectively communicated with the inner cavity 110B (or the sixth opening 1106B) of the valve body 11B.

It is to be understood that when the flat valve 10B is in the first working position, the water treatment system according to the second preferred embodiment of the present invention is controlled to be in the purification (or purification-softening) working state, the sixth passage 106B of the flat valve 10B communicates with the first passage 101B to form the first communicating passage 1001B, the seventh passage 107B communicates with the third passage 103B and the fourth passage 104B to form the second communicating passage 1002B, and the eighth passage 108B communicates with the second passage 102B and the fifth passage 105B to form the third communicating passage 1003B; when the flat valve 10B is at the second working position, the water treatment system according to the second preferred embodiment of the present invention is controlled to be in the second filter element backwashing working state, the sixth channel 106B of the flat valve 10B is communicated with the third channel 103B to form the fourth communicating channel 1004B, and the ninth channel 109B is respectively communicated with the second channel 102B and the tenth channel 1010B to form the fifth communicating channel 1005B; when the flat valve 10B is at the third operating position, the water treatment system according to the second preferred embodiment of the present invention is controlled to be in the backwashing operating state of the purification device (or the first filter element), the sixth channel 106B of the flat valve 10B is communicated with the second channel 102B to form the sixth communicating channel 1006B, and the ninth channel 109B is respectively communicated with the first channel 101B and the tenth channel 1010B to form the seventh communicating channel 1007B; when the flat valve 10B is in the fourth working position, the water treatment system according to the second preferred embodiment of the present invention is controlled to be in the second filter element forward washing working state, the sixth channel 106B of the flat valve 10B is communicated with the second channel 102B to form the eighth communicating channel 1008B, and the ninth channel 109B is respectively communicated with the third channel 103B and the tenth channel 1010B to form the ninth communicating channel 1009B; when the flat valve 10B is in the fifth working position, the water treatment system according to the second preferred embodiment of the present invention is controlled to be in the cleaning device (or the first filter element) washing working state, the sixth channel 106B of the flat valve 10B is communicated with the first channel 101B to form the tenth communication channel 10010B, and the ninth channel 109B is respectively communicated with the second channel 102B and the tenth channel 1010B to form the eleventh communication channel 10011B. Further, when the flat valve 10B is respectively located at the second working position, the third working position, the fourth working position and the fifth working position, the water treatment system according to the second preferred embodiment of the present invention is respectively located at the second filter element backwashing working state, the purification device (or first filter element) backwashing working state, the second filter element forward washing working state and the purification device (or first filter element) forward washing working state, the fourth channel 104B of the flat valve 10B is communicated with the sixth channel 106B (or the inner cavity 110B of the valve body 11B) to form the twelfth communicating channel 10012B, and the fifth channel 105B is communicated with the sixth channel 106B (or the inner cavity 110B of the valve body 11B) to form the thirteenth communicating channel 10013B.

As shown in fig. 27A to 27D, fig. 32A and fig. 34A of the drawings, when the planar valve 10B is in the first working position, the water treatment system is in the purification (or purification-softening) working state, raw water flows into the inner cavity 110B of the valve body 11B from the sixth opening 1106B of the valve body 11B, then flows into the first passage 101B of the fixed valve plate 12B through the sixth passage 106B of the movable valve plate 13B, then flows into the first communication opening 201B of the purification device (or the first filter element) 20B through the first opening 1101B of the valve body 11B, purified water treated by the water treatment material or device of the purification device (or the first filter element) 20B flows out from the second communication opening 202B of the purification device (or the first filter element) 20B, and is purified into two paths, wherein one path of purified water flows into the first communication opening 301B of the second filter element 30B, after being treated by the water treatment material or device of the second filter element 30B, the purified water flows out of the second conducting opening 302B of the second filter element 30B, then enters the third channel 103B of the fixed valve plate 12B through the third opening 1103B of the valve body 11B, is guided into the fourth channel 104B of the fixed valve plate 12B through the seventh channel 107B of the movable valve plate 13B, then is guided into the user through the fourth opening 1104B of the valve body 11B to supply the treated water, wherein another path of purified water flows into the second opening 1102B of the valve body 11B, then flows into the second channel 102B of the fixed valve plate 12B through the eighth channel 108B of the movable valve plate 13B, and finally flows into the fifth channel 105B of the fixed valve plate 12B through the fifth opening 1105B of the valve body 11B to supply the treated purified water to the user; as shown in fig. 28A to 28B, 32B and 34B of the drawings, when the flat valve 10B is at the second working position, the water treatment system is in the second filter element backwashing working state, raw water flows into the inner cavity 110B of the valve body 11B from the sixth opening 1106B of the valve body 11B, then flows into the third passage 103B of the fixed valve plate 12B through the sixth passage 106B of the movable valve plate 13B, then flows into the second conducting opening 302B of the second filter element 30B through the third opening 1103B of the valve body 11B, flows out of the first conducting opening 301B of the second filter element 30B after performing reverse flushing on the second filter element 30B, then flows through the second opening 1102B of the valve body 11B, then flows through the second passage 102B of the fixed valve plate 12B, the ninth passage 109B of the movable valve plate 13B and the tenth passage 1010B of the fixed valve plate 12B, and then flows out of the seventh opening 1107B of the valve body 11B of the flat valve 10B; as shown in fig. 29A to 29B, 32C and 34C of the drawings, when the flat valve 10B is at the third working position, the water treatment system is in the back washing working state of the purification device (or the first filter element), raw water flows into the inner cavity 110B of the valve body 11B from the sixth opening 1106B of the valve body 11B, then flows into the second passage 102B of the fixed valve plate 12B through the sixth passage 106B of the movable valve plate 13B, then flows into the second communication opening 202B of the purification device (or the first filter element) 20B through the second opening 1102B of the valve body 11B, flows out from the first communication opening 201B of the purification device (or the first filter element) 20B after back washing the purification device (or the first filter element) 20B, then flows through the first passage 101B of the fixed valve plate 12B, the ninth flow passage 109B of the fixed valve plate 13B and the tenth passage 1010B of the fixed valve plate 12B, and then flows out of the seventh opening 1107B of the valve body 11B of the flat valve 10B; as shown in fig. 30, 32D and 34D of the drawings, when the planar valve 10B is in the fourth operating position, the water treatment system is in the second filter element forward washing working state, raw water flows into the inner cavity 110B of the valve body 11B from the sixth opening 1106B of the valve body 11B, then flows into the second channel 102B of the fixed valve plate 12B through the sixth channel 106B of the movable valve plate 13B, then enters the first communication opening 301B of the second cartridge 30B through the second opening 1102B of the valve body 11B, after the second filter element 30B is flushed in the forward direction, it flows out of the second opening 302B of the second filter element 30B, then flows through the third channel 103B of the fixed valve plate 12B, the ninth channel 109B of the movable valve plate 13B and the tenth channel 1010B of the fixed valve plate 12B, and then flows out of the seventh opening 1107B of the valve body 11B of the flat valve 10B; as shown in fig. 31A to fig. 31B, fig. 32E and fig. 34E of the drawings, when the planar valve 10B is at the fifth working position, the water treatment system is in the purifying device (or first filter element) normal washing working state, raw water flows into the inner cavity 110B of the valve body 11B from the sixth opening 1106B of the valve body 11B, then flows into the first passage 101B of the fixed valve plate 12B through the sixth passage 106B of the movable valve plate 13B, then enters the first communication opening 201B of the purifying device (or first filter element) 20B through the first opening 1101B of the valve body 11B, performs normal flushing on the purifying device (or first filter element) 20B, flows out from the second communication opening 202B of the purifying device (or first filter element) 20B, then flows through the second passage 102B of the fixed valve plate 12B, the ninth movable passage 109B of the fixed valve plate 13B and the tenth passage 1010 of the fixed valve plate 12B, and out of the seventh opening 1107B of the valve body 11B of the flat valve 10B.

As shown in fig. 34A to 34E of the drawings, preferably, when the planar valve 10B is in the first working position, the ninth channel 109B and the tenth channel 1010B of the planar valve 10B are communicated; when the flat valve 10B is at the second working position, the first channel 101B of the flat valve 10B is closed by the movable valve plate 13B, the seventh channel 107B is communicated with the second channel 102B, and the eighth channel 108B is closed by the fixed valve plate 12B; when the planar valve 10B is in the third working position, the seventh passage 107B is communicated with the second passage 102B, and the eighth passage 108B is communicated with the third passage 103B; when the flat valve 10B is in the fourth working position, the seventh passage 107B is communicated with the first passage 101B, and the eighth passage 108B is closed by the fixed valve plate 12B; when the flat valve 10B is in the fifth working position, the third channel 103B is closed by the movable valve plate 13B, the seventh channel 107B is closed by the fixed valve plate 12B, and the eighth channel 108B is communicated with the second channel 102B.

It is noted that the first channel 101B, the second channel 102B, the third channel 103B, the fourth channel 104B, the fifth channel 105B and the tenth channel 1010B of the flat valve 10B are separately disposed on the first fluid control surface 120B of the fixed valve plate 12B; the sixth channel 106B, the seventh channel 107B, the eighth channel 108B and the ninth channel 109B are separately disposed on the second fluid control surface 130B of the movable valve plate 13B. In other words, the first channel 101B, the second channel 102B, the third channel 103B, the fourth channel 104B, the fifth channel 105B and the tenth channel 1010B of the flat valve 10B respectively form a channel opening of the first fluid control surface 120B disposed on the fixed valve plate 12B, the sixth channel 106B, the seventh channel 107B, the eighth channel 108B and the ninth channel 109B respectively form a channel opening of the second fluid 130B disposed on the movable valve plate 13B, when the movable valve plate 13B of the flat valve 10B is disposed opposite to the surface (the second fluid control surface 120B) and the movable valve plate 13B rotates relative to the fixed valve plate 12B, the channel disposed on the movable valve plate 13B and the channel disposed on the fixed valve plate 12B selectively communicate with each other through the corresponding channel openings, thereby forming corresponding communication channels and controlling the flow direction of the fluid (e.g., water flow).

It is understood that the first channel 101B, the second channel 102B, the third channel 103B, the fourth channel 104B, the fifth channel 105B, the sixth channel 106B, the seventh channel 107B, the eighth channel 108B, the ninth channel 109B, and the tenth channel 1010B of the planar valve 10B may have any extended path (or direction) that enables communication herein; the first channel 101B, the second channel 102B, the third channel 103B, the fourth channel 104B, the fifth channel 105B and the tenth channel 1010B of the flat valve 10B respectively form a channel opening of the first fluid control surface 120B of the fixed valve plate 12B, and the sixth channel 106B, the seventh channel 107B, the eighth channel 108B and the ninth channel 109B respectively form a channel opening of the second fluid control surface 130B of the movable valve plate 13B, which may have any shape capable of achieving the mutual communication relationship therein. For example, the second channel 102B can be formed on the first fluid control surface 120B of the stationary plate 12B with a channel opening having a regular shape or an irregular shape. Therefore, the extending paths (or directions) of the first channel 101B, the second channel 102B, the third channel 103B, the fourth channel 104B, the fifth channel 105B, the sixth channel 106B, the seventh channel 107B, the eighth channel 108B, the ninth channel 109B, and the tenth channel 1010B of the planar valve 10B and the shapes of the channel openings thereof should not be a limitation of the present invention.

As shown in fig. 33A to 33D of the drawings, the first channel 101B, the third channel 103B, the fourth channel 104B and the second channel 102B of the flat valve 10B of the water treatment system according to the second preferred embodiment of the present invention are arranged on the fixed valve plate 12B clockwise in this order, and the fifth channel 105B is located outside the second channel 102B; the sixth passage 106B, the seventh passage 107B, the ninth passage 109B, and the eighth passage 108B of the flat valve 10B are arranged clockwise in this order on the movable valve plate 13B. Optionally, the first channel 101B, the third channel 103B, the fourth channel 104B and the second channel 102B of the flat valve 10B are arranged on the fixed valve plate 12B counterclockwise in this order; the sixth passage 106B, the seventh passage 107B, the ninth passage 109B, and the eighth passage 108B of the flat valve 10B are arranged counterclockwise in this order on the movable valve plate 13B.

33A-33D of the drawings, the fixed valve plate 12B of the planar valve 10B of the water treatment system according to the second preferred embodiment of the present invention has a first central portion 121B, a first extending portion 122B extending outwardly from the first central portion 121B, and a first edge portion 123B extending outwardly from the first extending portion 122B, the movable valve plate 13B has a second central portion 131B, a second extending portion 132B extending outwardly from the second central portion 131B, and a second edge portion 133B extending outwardly from the second extending portion 132B, wherein the first fluid 120B of the fixed valve plate 12B has a central portion 1200B indicated by a dashed line in the drawings, wherein the central portion 1200B is disposed on the first central portion 121B of the fixed valve plate 12B, and a portion of the first fluid control surface 120B outside the central portion 1200B is equally divided by a first portion 1201B indicated by a dashed line in a clockwise direction, A second portion 1202B, a third portion 1203B, a fourth portion 1204B, a fifth portion 1205B, a sixth portion 1206B, a seventh portion 1207B, an eighth portion 1208B, and a ninth portion 1209B; the second fluid control surface 130B of the movable valve plate 13B of the flat valve 10B has a central area 1300B shown by a chain line in the figure, wherein the central area 1300B is disposed at the second central portion 131B of the movable valve plate 13B, and the part of the second fluid control surface 130B outside the central area 1300B is divided clockwise equally into a first area 1301B, a second area 1302B, a third area 1303B, a fourth area 1304B, a fifth area 1305B, a sixth area 1306B, a seventh area 1307B, an eighth area 1308B and a ninth area 1309B shown by dot-and-dash lines; wherein the first channel 101B extends downward from the first portion 1201B and the second portion 1202B of the first fluid control surface 120B, and the first channel 101B is a through hole; the third channel 103B extends downward from the third portion 1203B of the first fluid control surface 120B, and the third channel 103B is a through hole; the fourth channel 104B extends downward from the fourth portion 1204B of the first fluidic control surface 120B, and the fourth channel 104B is a through hole; the second channel 102B extends downward from the sixth portion 1206B, the seventh portion 1207B, and the eighth portion 1208B of the first fluid control surface 120B, and the second channel 102B is a through hole; the fifth channel 105B extends downward from the seventh portion 1207B of the first fluid control surface 120B, and the fifth channel 105B is a through hole; the tenth channel 1010B extends downward from the central portion 1200B of the first fluid control surface 120B, and the tenth channel 1010B is a through hole; the sixth channel 106B extends upward from the first region 1301B of the second flow control surface 130B; the seventh channel 107B extends upward from the third area 1303B and the fourth area 1304B of the second fluid control surface 130B, and the seventh channel 107B is a blind hole or a guiding groove; the ninth channel 109B extends upwardly from the central region 1300B and the fifth region 1305B of the second fluid control surface 130B, and the ninth channel 109B is a blind hole or a channel; the eighth channel 108B extends upwardly from the seventh region 1307B of the second fluid control surface 130B, and the eighth channel 108B is a blind hole or a channel.

It can be understood that, when the second fluid control surface 130B of the movable valve plate 13B is disposed on the first fluid control surface 120B of the fixed valve plate 12B, the second central portion 131B of the second fluid control surface 130B of the movable valve plate 13B faces the first central portion 121B of the first fluid control surface 120B of the fixed valve plate 12B, the second extending portion 132B of the second fluid control surface 130B of the movable valve plate 13B faces the first extending portion 122B of the first fluid control surface 120B of the fixed valve plate 12B, and the second edge portion 133B of the second fluid control surface 130B of the movable valve plate 13B faces the first edge portion 123B of the first fluid control surface 120B of the fixed valve plate 12B. Optionally, the first fluid control surface 120B of the fixed valve plate 12B of the planar valve 10B and the second fluid control surface 130B of the movable valve plate 13B are both circular, the first channel 101B, the second channel 102B, the third channel 103B, the fourth channel 104B and the fifth channel 105B are all radially disposed on the first fluid control surface 120B of the fixed valve plate 12B, and the sixth channel 106B, the seventh channel 107B and the eighth channel 108B are all radially disposed on the second fluid control surface 130B of the movable valve plate 13B.

Preferably, the first channel 101B, the second channel 102B and the third channel 103B of the flat valve 10B are respectively disposed at the first extending portion 122B of the first fluid control surface 120B of the fixed valve plate 12B, and the fourth channel 104B and the fifth channel 105B are respectively disposed at the first edge portion 123B of the first fluid control surface 120B.

Preferably, the sixth channel 106B of the flat valve 10B is disposed at the second extending portion 132B of the second fluid control surface 130B of the movable valve plate 13B, the seventh channel 107B and the eighth channel 108B are disposed at the second edge portion 133B of the second fluid control surface 130B of the movable valve plate 13B and extend inward from the second edge portion 133B to the second extending portion 132B, and the ninth channel 109B extends from the central region 1300B of the second fluid control surface 130B of the movable valve plate 13B to the second extending portion 132B of the second fluid control surface 130B.

Preferably, the first channel 101B of the flat valve 10B extends downward and outward from the first fluid control surface 120B of the fixed valve plate 12B, the second channel 102B extends downward and outward from the first fluid control surface 120B of the fixed valve plate 12B, the third channel 103B extends downward and outward from the first fluid control surface 120B of the fixed valve plate 12B, the fourth channel 104B extends downward and outward from the first fluid control surface 120B of the fixed valve plate 12B, the fifth channel 105B extends downward and outward from the first fluid control surface 120B of the fixed valve plate 12B, and the tenth channel 1010B extends downward and outward from the first fluid control surface 120B of the fixed valve plate 12B.

As shown in fig. 20 to 25 of the drawings, the valve body 11B of the flat valve 10B of the water treatment system according to the second preferred embodiment of the present invention has an inner wall 111B, wherein the fixed valve plate 12B is adapted to be disposed in the inner cavity 110B with the first fluid control surface 120B facing upward, and the movable valve plate 13B is adapted to be disposed in the inner cavity 110B with the second fluid control surface 130B facing downward, wherein the inner cavity 110B is always communicated with the sixth channel 106B. It should be noted that the fixed valve plate 12B of the flat valve 10B can be detachably disposed on the inner wall 111B of the valve body 11B, and can also be integrally formed with the inner wall 111B of the valve body 11B of the flat valve 10B. It will be understood by those skilled in the art that when the stationary plate 12B is detachably disposed in the valve body 11B, the stationary plate 12B and the valve body 11B maintain synchronization therebetween by a fixing mechanism. For example, as shown in fig. 23 to 25 of the drawings, the fixed valve plate 12B has a stopper protruding outward from the edge of the fixed valve plate 12B, and the inner wall 111B of the valve body 11B has a stopper groove, wherein the stopper of the fixed valve plate 12B is configured to engage with the stopper groove of the inner wall 111B of the valve body 11B to ensure synchronization (or no relative rotation) between the fixed valve plate 12B and the valve body 11B and ensure that each channel disposed on the fixed valve plate 12B communicates with a corresponding opening disposed on the valve body 11B. It is understood that when the stationary valve plate 12B is detachably provided in the valve body 11B, the stationary valve plate 12B can be separately manufactured. In other words, the stationary plate 12B can be made of a wear-resistant material, thereby increasing the service life of the stationary plate 12B (or the entire flat valve). Preferably, the first fluid control surface 120B of the stationary vane 12B is smoothed to reduce roughness.

As shown in fig. 23 to 25 of the drawings, the planar valve 10B of the water treatment system according to the second preferred embodiment of the invention further includes a driving element 18B extending upward from the movable valve plate 13B, wherein the driving element 18B is configured to drive the movable valve plate 13B of the planar valve 10B to rotate relative to the fixed valve plate 12B.

As shown in fig. 23 to 25 of the drawings, the planar valve 10B of the water treatment system according to the second preferred embodiment of the present invention further includes a sealing member 17B, wherein the sealing member 17B is disposed to face the driving member 18B, wherein the sealing member 17B forms a first sealing surface 170B, the driving member 18B forms a second sealing surface 180B, wherein the first sealing surface 170B of the sealing member 17B is disposed on the second sealing surface 180B of the driving member 18B, so that when the driving member 18B rotates relative to the sealing member 17B to drive the movable valve plate 13B to rotate relative to the fixed valve plate 12B, the driving member 18B and the sealing member 17B are sealed from water leakage. Furthermore, the sealing element 17B is arranged to keep the driving element 18B in place, thereby keeping the movable valve plate 13B in a preset position.

As shown in fig. 23 to 25 of the drawings, the diameter of the movable valve plate 13B of the planar valve 10B of the water treatment system according to the second preferred embodiment of the present invention is set to be slightly smaller than the diameter of the inner cavity 110B of the valve body 11B, so that the sixth channel 106B of the planar valve 10B can be kept in communication with the inner cavity 110B of the valve body 11B through the water inlet 1061B.

As shown in fig. 22 to 25, 27A to 27D, 32A and 34A of the drawings, the control device 16B of the flat valve 10B of the water treatment system according to the second preferred embodiment of the present invention is configured to drive the driving element 18B to rotate through a transmission mechanism 14B, such as a transmission gear, according to a purge (or purge-soften) control command, so as to drive the movable valve plate 13B of the flat valve 10B to rotate relative to the fixed valve plate 12B, thereby forming a first communication passage 1001B respectively communicating with the inner cavity 110B (or sixth opening) and the first opening 1101B of the valve body 11B of the flat valve 10B, a second communication passage 1002B respectively communicating with the third opening 1103B and the fourth opening 1104B of the valve body 11B, and a third communication passage 1003B respectively communicating with the second opening 1102B and the fifth opening 1105B of the valve body 11B, so as to allow raw water to enter the inner cavity 110B from the sixth opening 1106B of the valve body 11B, flow into the purification device (or the first filter element) 20B through the first communication channel 1001B formed by the planar valve 10B, the first opening 1101B of the valve body 11B, and the first communication opening 201B of the purification device (or the first filter element) 20B, and the purified water obtained after the raw water is purified by the purification device (or the first filter element) 20B flows out from the second communication opening 202B of the purification device (or the first filter element) 20B, and then is divided into two paths, wherein one path of purified water can flow into the second filter element 30B through the first communication opening 301B of the second filter element 30B, and flows out from the second communication opening 302B of the second filter element 30B after being treated by the second filter element 30B, and then flows out through the third opening 1103B of the valve body 11B, The second communication passage 1002B and the fourth opening 1104B of the valve body 11B flow out and supply the treated water to the user, and the other path of purified water flows into the second opening 1102B of the valve body 11B, flows through the third communication passage 1003B, flows out from the fifth opening 1105B of the valve body 11B, and supplies the treated purified water to the user; as shown in fig. 22 to 25, 28A to 28B, 32B and 34B of the drawings, according to a second filter element backwashing control command, the driving element 18B is driven to rotate by the transmission mechanism 14B, such as a transmission gear, so as to drive the movable valve plate 13B of the flat valve 10B to rotate relative to the fixed valve plate 12B, thereby forming a fourth communication channel 1004B respectively communicated with the inner cavity 110B (or a sixth opening) and the third opening 1103B of the valve body 11B of the flat valve 10B and forming a fifth communication channel 1005B respectively communicated with the second opening 1102B and the seventh opening 1107B of the valve body 11B, so as to allow 1103 to flow from the sixth opening 1106B of the valve body 11B into the inner cavity 110B of the valve body 11B, and then flow into the third opening B of the valve body 11B through the fourth communication channel 1004B formed by the flat valve 10B, then flows into the second filter element 30B through the second through opening 302B of the second filter element 30B, and reversely washes the second filter element 30B, so that the obtained sewage or wastewater flows out from the first through opening 301B of the second filter element 30B, then flows into the fifth communicating channel 1005B of the flat valve 10B through the second opening 1102B of the valve body 11B, and then flows out from the seventh opening 1107B of the flat valve 10B; as shown in fig. 22 to 25, 29A to 29B, 32C and 34C of the drawings, according to a backwashing control command of a cleaning device (or a first filter element), the driving element 18B is driven to rotate by the transmission mechanism 14B, such as a transmission gear, so as to drive the movable valve plate 13B of the flat valve 10B to rotate relative to the fixed valve plate 12B, thereby forming a sixth communication channel 1006B respectively communicated with the inner cavity 110B (or a sixth opening) and the second opening 1102B of the valve body 11B and a seventh communication channel 1007B respectively communicated with the first opening 1107B and the seventh opening 1107B of the valve body 11B, so as to allow raw water to flow from the sixth opening 1106B of the valve body 11B into the inner cavity 110B of the valve body 11B, and then flow into the second opening 1102B of the valve body 11B through the sixth communication channel 1006B formed by the flat valve 10B, then flows into the purification device (or the first filter element) 20B through the second communication opening 202B of the purification device (or the first filter element) 20B, and reversely washes the purification device (or the first filter element) 20B, so that the obtained sewage or wastewater flows out of the first communication opening 201B of the purification device (or the first filter element) 20B, then flows into the seventh communication channel 1007B of the flat valve 10B through the first opening 1101B of the valve body 11B, and then flows out of the seventh opening 1107B of the flat valve 10B; as shown in fig. 22 to 25, 30, 32D and 34D of the drawings, according to a second filter core forward washing control command, the driving element 18B is driven to rotate through the transmission mechanism 14B, such as a transmission gear, so as to drive the movable valve plate 13B of the planar valve 10B to rotate relative to the fixed valve plate 12B, thereby forming an eighth communication channel 1008B respectively communicated with the inner cavity 110B (or a sixth opening) and the second opening 1102B of the valve body 11B and a ninth communication channel 1009B respectively communicated with the third opening 1103B and the seventh opening 1107B of the valve body 11B, so as to allow raw water to flow from the sixth opening 1106B of the valve body 11B into the inner cavity 110B of the valve body 11B, then flow through the eighth communication channel 1008B formed by the planar valve 10B into the second opening 1102B of the valve body 11B, and then flow through the first communication opening 301B of the second filter core 30B into the second filter core 30B, and forward flushing the second filter element 30B, wherein the obtained sewage or wastewater flows out from the second through opening 302B of the second filter element 30B, then flows through the third opening 1103B of the valve body 11B into the ninth communication channel 1009B of the flat valve 10B, and then flows out from the seventh opening 1107B of the flat valve 10B; as shown in fig. 22 to 25, 31A to 31B, 32E and 34E of the drawings, according to a purifying device (or first filter element) forward washing control command, the driving element 18B is driven to rotate by the transmission mechanism 14B, such as a transmission gear, so as to drive the movable valve plate 13B of the planar valve 10B to rotate relative to the fixed valve plate 12B, thereby forming a tenth communication channel 10010B respectively communicated with the inner cavity 110B (or sixth opening) and the first opening 1101B of the valve body 11B and an eleventh communication channel 10011B respectively communicated with the second opening 1102B and the seventh opening 1107B of the valve body 11B, so as to allow raw water to flow from the sixth opening 1106B of the valve body 11B into the inner cavity 110B of the valve body 11B, and then flow into the first opening B of the valve body 11B through the tenth communication channel 10010B formed by the planar valve 1101B, then flows into the purification device (or the first filter element) 20B through the first communication opening 201B of the purification device (or the first filter element) 20B, and performs forward flushing on the purification device (or the first filter element) 20B, so that the obtained sewage or wastewater flows out from the second communication opening 202B of the purification device (or the first filter element) 20B, then flows into the eleventh communication channel 10011B of the flat valve 10B through the second opening 1102B of the valve body 11B, and then flows out from the seventh opening 1107B of the flat valve 10B.

It should be noted that the control command, such as a purification (or purification-softening) control command, a second filter element backwashing control command, a purification device (or first filter element) backwashing control command, a second filter element forward washing control command, a purification device (or first filter element) forward washing control command, etc., may be preset in the control module of the control device 16B, may be received from a control terminal through an electronic communication network, or may be input by a user through an input interface. For example, when the water treatment system of the present invention is configured to have an input interface, such as a touch pad or control button, for the planar valve 10B, a user can send the control command to the control module of the control device 16B through the touch pad or the corresponding control button, so that the control module of the control device 16B controls the motor of the control device 16B to rotate, thereby driving the driving element 18B to rotate through the transmission mechanism 14B.

[ DOWN-DRAINAGE-NON-CONTINUOUS WATER SUPPLY ]

Referring to fig. 35A-38E of the drawings, an alternative implementation of the flat valve 10C of the water treatment system in accordance with the second preferred embodiment of the present invention is illustrated, wherein the flat valve 10C has a first channel 101C, a second channel 102C, a third channel 103C, a fourth channel 104C, a fifth channel 105C, a sixth channel 106C, a seventh channel 107C, an eighth channel 108C, a ninth channel 109C and a tenth channel 1010C, wherein the first channel 101C, the second channel 102C, the third channel 103C, the fourth channel 104C, the fifth channel 105C and the tenth channel 1010C are respectively disposed on the fixed plate 12C and respectively extend from the first fluid control surface 120C of the fixed plate 12C; the sixth channel 106C, the seventh channel 107C, the eighth channel 108C, and the ninth channel 109C are respectively disposed on the movable valve plate 13C and respectively extend from the second fluid control surface 130C of the movable valve plate 13C, the first channel 101C is communicated with the first opening 1101C, the second channel 102C is communicated with the second opening 1102C, the third channel 103C is communicated with the third opening 1103C, the fourth channel 104C is communicated with the fourth opening 1104C, the fifth channel 105C is communicated with the fifth opening 1105C, the sixth channel 106C is communicated with the inner cavity 110C of the valve body 11C, the ninth channel 109C is communicated with the tenth channel 1010C, and the tenth channel 1010C is communicated with the seventh opening 1107C of the flat valve 10C.

As shown in fig. 35A to 38E of the drawings, when the flat valve 10C is in the second, third, fourth and fifth operating positions, one end ports of the fourth and fifth passages 104C and 105C of the flat valve 10C are respectively closed by the movable valve plate 13C, and the other end ports of the fourth and fifth passages 104C and 105C of the flat valve 10C are respectively communicated with the fourth and fifth openings 1104C and 1105C of the valve body 11C. Therefore, when the planar valve 10C of the water treatment system according to the first preferred embodiment of the present invention is located at the second working position, the third working position, the fourth working position and the fifth working position, the twelfth communicating channel 10012B and the thirteenth communicating channel 10013B are no longer formed (or cannot be formed) by the planar valve 10C. In other words, when the flat valve 10C is in the second operating position, the third operating position, the fourth operating position and the fifth operating position, the flat valve 10C does not provide the water to be treated (or the raw water) through the fourth opening 1104C and the fifth opening 1105C.

It will be understood that the terms first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, twelfth and/or thirteenth herein are used merely to describe the present invention, to name and distinguish between various components (or elements) of the present invention. Unless otherwise indicated, they do not have an ordinal or numerical meaning by themselves.

It is particularly noted that modifications, variations and/or substitutions which may be made by simple structural changes to the water treatment system or the planar valve of the present invention without departing from the spirit of the invention are also considered to be within the scope of the invention. For example: it is within the scope of the present invention to change the position of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth and/or tenth channel of the inventive flat valve and/or to change the shape of the channel opening of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth and/or tenth channel formed at the first and/or second fluid control surface, etc. such modifications, variations and/or substitutions are to be regarded as being within the scope of the present invention.

Those skilled in the art will appreciate that the embodiments of the invention illustrated in the drawings and described above are merely exemplary and not limiting of the invention. It can thus be seen that the objects of the invention are sufficiently well-attained. The embodiments for explaining the functional and structural principles of the present invention have been fully illustrated and described, and the present invention is not limited by changes based on the principles of these embodiments. Accordingly, this invention includes all modifications encompassed within the scope and spirit of the following claims.

Claims

1. A water treatment system, comprising:

2. The water treatment system of claim 1 wherein the planar valve has a first operating position, wherein when the planar valve is in the first operating position, the planar valve forms a first communication passage in communication with the sixth opening and the first opening, respectively, a second communication passage in communication with the third opening and the fourth opening, respectively, and a third communication passage in communication with the second opening and the fifth opening, respectively.

3. The water treatment system of claim 2 wherein the planar valve further has a second operating position, wherein when the planar valve is in the second operating position, the planar valve forms a fourth communication passage in communication with the sixth opening and the third opening, respectively, and a fifth communication passage in communication with the second opening and a seventh opening of the valve body, respectively.

4. The water treatment system of claim 3 wherein the planar valve further has a third operational position, wherein in the third operational position the planar valve forms a sixth communication passage in communication with the sixth opening and the second opening, respectively, and a seventh communication passage in communication with the first opening and the seventh opening, respectively.

5. The water treatment system of claim 4 wherein the planar valve further has a fourth operating position, wherein when the planar valve is in the fourth operating position, the planar valve forms an eighth communication channel in communication with the sixth opening and the second opening, respectively, and a ninth communication channel in communication with the third opening and the seventh opening, respectively.

6. The water treatment system of claim 5 wherein the planar valve further has a fifth operational position, wherein when the planar valve is in the fifth operational position, the planar valve forms a tenth communication passage in communication with the sixth opening and the first opening, respectively, and an eleventh communication passage in communication with the second opening and the seventh opening, respectively.

7. The water treatment system of claim 6, wherein when the planar valve is in the second, third, fourth or fifth operating positions, the planar valve further defines a twelfth communication passage in communication with the sixth and fourth openings, respectively, and a thirteenth communication passage in communication with the sixth and fifth openings, respectively.

8. The water treatment system of claim 2, wherein the planar valve comprises a movable plate and a fixed plate, wherein the fixed plate has a first fluid control surface, the movable plate has a second fluid control surface, wherein the movable plate and the fixed plate are both disposed in an interior cavity of the valve body, wherein the second fluid control surface of the movable plate is disposed on the first fluid control surface of the fixed plate, and the movable plate is disposed to rotate relative to the fixed plate; wherein the planar valve has a first channel, a second channel, a third channel, a fourth channel, a fifth channel, a sixth channel, a seventh channel, an eighth channel, and a ninth channel, the first channel, the second channel, the third channel, the fourth channel and the fifth channel are respectively arranged on the fixed valve plate and respectively extend from the first fluid control surface, the sixth channel, the seventh channel, the eighth channel and the ninth channel are respectively disposed on the movable valve plate and respectively extend from the second fluid control surface, wherein the first channel is communicated with the first opening, the second channel is communicated with the second opening, the third channel is communicated with the third opening, the fourth channel is communicated with the fourth opening, the fifth channel is communicated with the fifth opening, and the sixth channel is communicated with the sixth opening; when the plane valve is located at the first working position, the sixth channel is communicated with the first channel to form the first communicating channel, the seventh channel is respectively communicated with the third channel and the fourth channel to form the second communicating channel, and the eighth channel is respectively communicated with the second channel and the fifth channel to form the third communicating channel.

9. The water treatment system of claim 8 wherein the planar valve further has a second operating position, wherein when the planar valve is in the second operating position, the sixth passage communicates with the third passage to form a fourth communication passage that communicates with the sixth opening and the third opening, respectively, and the ninth passage communicates with the second passage to form a fifth communication passage that communicates with the second opening and a seventh opening of the valve body, respectively.

10. The water treatment system of claim 9 wherein the planar valve further has a third operational position, wherein when the planar valve is in the third operational position, the sixth passage communicates with the second passage to form a sixth communication passage communicating with the sixth opening and the second opening, respectively, and the ninth passage communicates with the first passage to form a seventh communication passage communicating with the first opening and the seventh opening, respectively.

11. The water treatment system of claim 10 wherein the planar valve further has a fourth operating position, wherein when the planar valve is in the fourth operating position, the sixth passage communicates with the second passage to form an eighth communication passage that communicates with the sixth opening and the second opening, respectively, and the ninth passage communicates with the third passage to form a ninth communication passage that communicates with the third opening and the seventh opening, respectively.

12. The water treatment system of claim 11 wherein the planar valve further has a fifth operational position, wherein when the planar valve is in the fifth operational position, the sixth passage communicates with the first passage to form a tenth communication passage that communicates with the sixth opening and the first opening, respectively, and the ninth passage communicates with the second passage to form an eleventh communication passage that communicates with the second opening and the seventh opening, respectively.

13. The water treatment system of claim 12 wherein when the planar valve is in the second, third, fourth and fifth operating positions, the planar valve further defines a twelfth communication passage in communication with the sixth and fourth openings, respectively, and a thirteenth communication passage in communication with the sixth and fifth openings, respectively.

14. The water treatment system of claim 2, wherein the planar valve comprises a movable plate and a fixed plate, wherein the fixed plate has a first fluid control surface, the movable plate has a second fluid control surface, wherein the movable plate and the fixed plate are both disposed in an interior cavity of the valve body, wherein the second fluid control surface of the movable plate is disposed on the first fluid control surface of the fixed plate, and the movable plate is disposed to rotate relative to the fixed plate; wherein the planar valve has a first channel, a second channel, a third channel, a fourth channel, a fifth channel, a sixth channel, a seventh channel, an eighth channel, a ninth channel and a tenth channel, the first channel, the second channel, the third channel, the fourth channel, the fifth channel and the tenth channel are respectively disposed on the fixed valve plate and respectively extend from the first fluid control surface, the sixth channel, the seventh channel, the eighth channel and the ninth channel are respectively disposed on the movable valve plate and respectively extend from the second fluid control surface, wherein the first channel is communicated with the first opening, the second channel is communicated with the second opening, the third channel is communicated with the third opening, the fourth channel is communicated with the fourth opening, the fifth channel is communicated with the fifth opening, the sixth channel is communicated with the sixth opening, the ninth channel is communicated with the tenth channel, and the tenth channel is communicated with a seventh opening; when the plane valve is located at the first working position, the sixth channel is communicated with the first channel to form the first communicating channel, the seventh channel is respectively communicated with the third channel and the fourth channel to form the second communicating channel, and the eighth channel is respectively communicated with the second channel and the fifth channel to form the third communicating channel.

15. The water treatment system of claim 14 wherein the planar valve further has a second operating position, wherein when the planar valve is in the second operating position, the sixth passage communicates with the third passage to form a fourth communicating passage that communicates with the sixth opening and the third opening, respectively, and the ninth passage communicates with the second passage and the tenth passage, respectively, to form a fifth communicating passage that communicates with the second opening and the seventh opening of the valve body, respectively.

16. The water treatment system of claim 15 wherein the planar valve further has a third operational position, wherein when the planar valve is in the third operational position, the sixth passage communicates with the second passage to form a sixth communication passage that communicates with the sixth opening and the second opening, respectively, and the ninth passage communicates with the first passage and the tenth passage, respectively, to form a seventh communication passage that communicates with the first opening and the seventh opening, respectively.

17. The water treatment system of claim 16 wherein the planar valve further has a fourth operating position, wherein when the planar valve is in the fourth operating position, the sixth passage communicates with the second passage to form an eighth communication passage that communicates with the sixth opening and the second opening, respectively, and the ninth passage communicates with the third passage and the tenth passage, respectively, to form a ninth communication passage that communicates with the third opening and the seventh opening, respectively.

18. The water treatment system of claim 17 wherein the planar valve further has a fifth operational position, wherein when the planar valve is in the fifth operational position, the sixth passage communicates with the first passage to form a tenth communication passage that communicates with the sixth opening and the first opening, respectively, and the ninth passage communicates with the second passage and the tenth passage, respectively, to form an eleventh communication passage that communicates with the second opening and the seventh opening, respectively.

19. The water treatment system of claim 18 wherein when the planar valve is in the second, third, fourth and/or fifth operating positions, the planar valve further defines a twelfth communication passage in communication with the sixth and fourth openings, respectively, and a thirteenth communication passage in communication with the sixth and fifth openings, respectively.

20. The water treatment system of claim 1, 2, 3, 4, 5, 6, or 7, wherein the planar valve comprises a movable valve plate and a fixed valve plate, wherein the fixed valve plate has a first fluid control surface and the movable valve plate has a second fluid control surface, wherein the movable valve plate and the fixed valve plate are both disposed in an inner cavity of the valve body, wherein the second fluid control surface of the movable valve plate is disposed on the first fluid control surface of the fixed valve plate, and the movable valve plate is disposed to rotate relative to the fixed valve plate; the planar valve is provided with a first channel, a second channel, a third channel, a fourth channel, a fifth channel, a sixth channel, a seventh channel, an eighth channel and a ninth channel, the first channel, the second channel, the third channel, the fourth channel and the fifth channel are respectively arranged on the fixed valve plate and respectively extend from the first fluid control surface, the sixth channel, the seventh channel, the eighth channel and the ninth channel are respectively arranged on the movable valve plate and respectively extend from the second fluid control surface, wherein the first channel is communicated with the first opening, the second channel is communicated with the second opening, the third channel is communicated with the third opening, the fourth channel is communicated with the fourth opening, and the fifth channel is communicated with the fifth opening; the first channel, the third channel, the fourth channel and the second channel are arranged on the fixed valve plate clockwise in this order; the sixth channel, the seventh channel, the ninth channel and the eighth channel are arranged on the movable valve plate clockwise in this order.

21. The water treatment system of claim 1, wherein the planar valve comprises a movable plate and a fixed plate, wherein the fixed plate has a first fluid control surface, the movable plate has a second fluid control surface, wherein the movable plate and the fixed plate are both disposed in an interior cavity of the valve body, wherein the second fluid control surface of the movable plate is disposed on the first fluid control surface of the fixed plate, and the movable plate is disposed to rotate relative to the fixed plate; the planar valve also has a seventh opening; wherein the planar valve has a first channel, a second channel, a third channel, a fourth channel, a fifth channel, a sixth channel, a seventh channel, an eighth channel and a ninth channel, the first channel, the second channel, the third channel, the fourth channel and the fifth channel are respectively disposed on the fixed valve plate and respectively extend from the first fluid control surface, the sixth channel, the seventh channel, the eighth channel and the ninth channel are respectively disposed on the movable valve plate and respectively extend from the second fluid control surface, wherein the first channel is communicated with the first opening, the second channel is communicated with the second opening, the third channel is communicated with the third opening, the fourth channel is communicated with the fourth opening, the fifth channel is communicated with the fifth opening, the sixth channel is communicated with the sixth opening, the ninth passage is in communication with the seventh opening.

22. The water treatment system of claim 21 wherein the stationary plate further has a tenth passage, the ninth passage being in communication with the tenth passage, the tenth passage being in communication with the seventh opening.

23. A planar valve for a water treatment system comprising a valve body, wherein the valve body has a first opening, a second opening, a third opening, a fourth opening, a fifth opening and a sixth opening, wherein the sixth opening of the valve body selectively communicates with at least one of the first opening, the second opening, the third opening, the fourth opening and the fifth opening.

24. The planar valve of claim 23, further comprising a fixed valve plate and a movable valve plate, wherein the fixed valve plate has a first fluid control surface, the movable valve plate has a second fluid control surface, the fixed valve plate and the movable valve plate are respectively disposed on the valve body, the second fluid control surface of the movable valve plate is disposed on the first fluid control surface of the fixed valve plate, and the movable valve plate is disposed to be rotatable relative to the fixed valve plate, so that the sixth opening of the valve body is selectively communicated with at least one of the first opening, the second opening, the third opening, the fourth opening, and the fifth opening.

25. The planar valve as claimed in claim 24, wherein the planar valve has a first passage, a second passage, a third passage, a fourth passage, a fifth passage, a sixth passage, a seventh passage, an eighth passage and a ninth passage, the first passage, the second passage, the third passage, the fourth passage and the fifth passage are respectively disposed on the stationary plate and respectively extend from the first fluid control surface, the sixth passage, the seventh passage, the eighth passage and the ninth passage are respectively disposed on the movable plate and respectively extend from the second fluid control surface, wherein the first passage communicates with the first opening, the second passage communicates with the second opening, the third passage communicates with the third opening, the fourth passage communicates with the fourth opening, the fifth passage communicates with the fifth opening, the sixth channel is communicated with the sixth opening, and the ninth channel is communicated with a seventh opening of the valve body; when the planar valve is located at a first working position, the sixth channel is communicated with the first channel, so that the movable valve plate and the fixed valve plate form a first communication channel respectively communicated with the sixth opening and the first opening, the seventh channel is respectively communicated with the third channel and the fourth channel, so that the movable valve plate and the fixed valve plate form a second communication channel respectively communicated with the third opening and the fourth opening, the eighth channel is respectively communicated with the second channel and the fifth channel, and the movable valve plate and the fixed valve plate form a third communication channel respectively communicated with the second opening and the fifth opening.

26. The flat valve according to claim 25, wherein the sixth passage communicates with the third passage when the flat valve is in a second working position, so that the movable plate and the fixed plate form a fourth communicating passage communicating with the sixth opening and the third opening, respectively, and the ninth passage communicates with the second passage, so that the movable plate and the fixed plate form a fifth communicating passage communicating with the second opening and the seventh opening, respectively.

27. The flat valve according to claim 26, wherein the sixth passage communicates with the second passage when the flat valve is in a third operating position, so that the movable plate and the fixed plate form a sixth communicating passage communicating with the sixth opening and the second opening, respectively, and the ninth passage communicates with the first passage, so that the movable plate and the fixed plate form a seventh communicating passage communicating with the first opening and the seventh opening, respectively.

28. The flat valve according to claim 27, wherein when the flat valve is in a fourth operating position, the sixth passage communicates with the second passage, so that the movable valve plate and the fixed valve plate form an eighth communicating passage that communicates with the sixth opening and the second opening, respectively, and the ninth passage communicates with the third passage, so that the movable valve plate and the fixed valve plate form a ninth communicating passage that communicates with the third opening and the seventh opening, respectively.

29. The flat valve according to claim 28, wherein when the flat valve is in a fifth operating position, the sixth passage communicates with the first passage, so that the movable valve plate and the fixed valve plate form a tenth communication passage that communicates with the sixth opening and the first opening, respectively, and the ninth passage communicates with the second passage, so that the movable valve plate and the fixed valve plate form an eleventh communication passage that communicates with the second opening and the seventh opening, respectively.

30. The planar valve as claimed in claim 24, wherein the planar valve has a first passage, a second passage, a third passage, a fourth passage, a fifth passage, a sixth passage, a seventh passage, an eighth passage, a ninth passage and a tenth passage, the first passage, the second passage, the third passage, the fourth passage, the fifth passage and the tenth passage are respectively disposed on the stationary plate and respectively extend from the first fluid control surface, the sixth passage, the seventh passage, the eighth passage and the ninth passage are respectively disposed on the movable plate and respectively extend from the second fluid control surface, wherein the first passage communicates with the first opening, the second passage communicates with the second opening, the third passage communicates with the third opening, the fourth passage communicates with the fourth opening, the fifth channel is communicated with the fifth opening, the sixth channel is communicated with the sixth opening, the ninth channel is communicated with the tenth channel, and the tenth channel is communicated with a seventh opening of the valve body; when the planar valve is located at a first working position, the sixth channel is communicated with the first channel, so that the movable valve plate and the fixed valve plate form a first communication channel respectively communicated with the sixth opening and the first opening, the seventh channel is respectively communicated with the third channel and the fourth channel, so that the movable valve plate and the fixed valve plate form a second communication channel respectively communicated with the third opening and the fourth opening, the eighth channel is respectively communicated with the second channel and the fifth channel, and the movable valve plate and the fixed valve plate form a third communication channel respectively communicated with the second opening and the fifth opening.

31. The planar valve as claimed in claim 30, wherein when the planar valve is in a second working position, the sixth passage communicates with the third passage, so that the movable valve plate and the fixed valve plate form a fourth communicating passage respectively communicating with the sixth opening and the third opening, and the ninth passage communicates with the second passage and the tenth passage, respectively, so that the movable valve plate and the fixed valve plate form a fifth communicating passage respectively communicating with the second opening and the seventh opening of the valve body.

32. The flat valve according to claim 31, wherein when the flat valve is in a third operating position, the sixth passage communicates with the second passage, so that the movable plate and the fixed plate form a sixth communicating passage communicating with the sixth opening and the second opening, respectively, and the ninth passage communicates with the first passage and the tenth passage, respectively, so that the movable plate and the fixed plate form a seventh communicating passage communicating with the first opening and the seventh opening, respectively.

33. The planar valve as claimed in claim 32, wherein when the planar valve is in a fourth operating position, the sixth passage communicates with the second passage, so that the movable valve plate and the fixed valve plate form an eighth communicating passage respectively communicating with the sixth opening and the second opening, and the ninth passage communicates with the third passage and the tenth passage, respectively, so that the movable valve plate and the fixed valve plate form a ninth communicating passage respectively communicating with the third opening and the seventh opening.

34. The flat valve according to claim 33, wherein when the flat valve is in a fifth operating position, the sixth passage communicates with the first passage, so that the movable valve plate and the fixed valve plate form a tenth communication passage that communicates with the sixth opening and the first opening, respectively, and the ninth passage communicates with the second passage and the tenth passage, respectively, so that the movable valve plate and the fixed valve plate form an eleventh communication passage that communicates with the second opening and the seventh opening, respectively.

35. The flat valve according to claim 29 or 34, wherein when the flat valve is in the second operating position, the third operating position, the fourth operating position or the fifth operating position, the sixth passage is respectively communicated with the fourth passage and the fifth passage, so that the movable valve plate and the fixed valve plate form a twelfth communicating passage respectively communicated with the sixth opening and the fourth opening and a thirteenth communicating passage respectively communicated with the sixth opening and the fifth opening.

36. The planar valve of claim 24, wherein the planar valve has a first passage, a second passage, a third passage, a fourth passage, a fifth passage, a sixth passage, a seventh passage, an eighth passage, and a ninth passage, the first channel, the second channel, the third channel, the fourth channel and the fifth channel are respectively arranged on the fixed valve plate and respectively extend from the first fluid control surface, the sixth channel, the seventh channel, the eighth channel and the ninth channel are respectively disposed on the movable valve plate and respectively extend from the second fluid control surface, wherein the first channel is communicated with the first opening, the second channel is communicated with the second opening, the third channel is communicated with the third opening, the fourth channel is communicated with the fourth opening, and the fifth channel is communicated with the fifth opening; the first channel, the third channel, the fourth channel and the second channel are arranged on the fixed valve plate clockwise in this order; the sixth channel, the seventh channel, the ninth channel and the eighth channel are arranged on the movable valve plate clockwise in this order.

37. The planar valve of claim 24 further comprising a seventh opening; wherein the planar valve has a first channel, a second channel, a third channel, a fourth channel, a fifth channel, a sixth channel, a seventh channel, an eighth channel and a ninth channel, the first channel, the second channel, the third channel, the fourth channel and the fifth channel are respectively disposed on the fixed valve plate and respectively extend from the first fluid control surface, the sixth channel, the seventh channel, the eighth channel and the ninth channel are respectively disposed on the movable valve plate and respectively extend from the second fluid control surface, wherein the first channel is communicated with the first opening, the second channel is communicated with the second opening, the third channel is communicated with the third opening, the fourth channel is communicated with the fourth opening, the fifth channel is communicated with the fifth opening, the sixth channel is communicated with the sixth opening, the ninth passage is in communication with the seventh opening.

38. The flat valve according to claim 37, wherein the stationary plate further has a tenth passage, the ninth passage communicating with the tenth passage, the tenth passage communicating with the seventh opening.