CN214036976U - Water valve and water purification unit - Google Patents

Abstract

The application discloses water valve and water purification unit. The water valve includes: the valve body is provided with a water inlet flow channel, a first water outlet flow channel and a second water outlet flow channel, a first water cavity and a second water cavity are arranged in the valve body, and the water inlet flow channel is communicated with the first water outlet flow channel through the first water cavity; the valve core assembly is movably arranged in the valve body and used for opening the second water cavity so that the water inlet flow channel is communicated with the second water outlet flow channel through the second water cavity. The water valve of this application simple structure can realize the function of one into two plays, and is applied to and can realize washing the pure water of membrane filter core among the water purification unit, reduces the total dissolved solid of first glass of water.

Description

Water valve and water purification unit

Technical Field

The application relates to the technical field of water purifying equipment, in particular to a water valve and water purifying equipment.

Background

Along with the continuous update and the development of water purification trade technique, for the intelligent and diversified development that adapts to the water purification unit function, each components and parts among the water purification unit also develop towards diversified, modularization, integration direction.

In order to solve the problem that the TDS (Total Dissolved Solids) of first glass of water is high in the water purifying dispenser, a scheme of washing by using filter element pure water is generally adopted, most of water valve components existing on the market are of one-in one-out type structures at present, a plurality of electromagnetic valves and one-way valves need to be designed and carried in water path control of the scheme of washing by using the filter element pure water to realize functions, and the system structure is complex.

SUMMERY OF THE UTILITY MODEL

The main technical problem who solves of this application provides a water valve and water purification unit, and simple structure can realize the function of one into two plays, and is applied to the water purification unit and can realize washing the pure water of membrane filter core.

In order to solve the technical problem, the application adopts a technical scheme that: providing a water valve comprising: the valve body is provided with a water inlet flow channel, a first water outlet flow channel and a second water outlet flow channel, a first water cavity and a second water cavity are arranged in the valve body, and the water inlet flow channel is communicated with the first water outlet flow channel through the first water cavity; and the valve core assembly is movably arranged in the valve body and is used for opening the second water cavity so as to enable the water inlet flow channel and the second water outlet flow channel to be communicated through the second water cavity.

Furthermore, the water valve also comprises a first one-way valve which is positioned in the first water outlet flow passage.

Furthermore, the water valve also comprises a second one-way valve which is positioned in the second water outlet flow passage.

Further, the valve body is including the disk seat that has the inner chamber, and the diapire epirelief of disk seat is equipped with annular fender water spare, and the inside of annular fender water spare forms the second water cavity, and the interval forms first water cavity between the internal perisporium of periphery wall and the disk seat of annular fender water spare.

Furthermore, a first interface is arranged between the water inlet flow channel and the first water cavity, a second interface is arranged between the first water outlet flow channel and the first water cavity, and the vertical distance from the first interface to the bottom wall of the valve seat is equal to the distance from the second interface to the bottom wall of the valve seat.

Further, the water inlet flow channel and the second water outlet flow channel are arranged side by side along the depth direction of the valve seat.

Further, the valve body further comprises a valve cover, the valve cover is sealed and arranged at the open end of the valve seat, the valve core assembly comprises a sealing element arranged in the valve seat, and the sealing element moves relative to the annular water blocking element to open or close the second water cavity.

Further, the water valve also comprises an inductance coil and a core iron, wherein the inductance coil is arranged on the valve cover, and the core iron is positioned in the inductance coil and is used for being matched with the valve core assembly to open or close the second water cavity.

In order to solve the above technical problem, another technical solution adopted by the present application is: the utility model provides a water purification unit, this water purification unit include membrane filter core and the water valve of any above-mentioned embodiment, and the water valve is located the pure water road of membrane filter core.

Furthermore, a first water outlet flow passage of the water valve is communicated with a pure water taking end of the water purifying equipment, and a second water outlet flow passage of the water valve is communicated with a water inlet end of the membrane filter element.

The beneficial effect of this application is: different from the situation of the prior art, the water valve comprises a valve body and a valve core assembly, wherein the valve body is provided with a water inlet flow channel, a first water outlet flow channel and a second water outlet flow channel, a first water cavity and a second water cavity are arranged in the valve body, the water inlet flow channel is communicated with the first water outlet flow channel through the first water cavity, namely the water inlet flow channel and the first water outlet flow channel can form a water flow channel to enable water to flow out, the valve core assembly is movably arranged on the valve body and used for opening the second water cavity, so that the water inlet flow channel is communicated with the second water outlet flow channel through the second water cavity, namely the water inlet flow channel and the second water outlet flow channel can form another water flow channel in the state that the second water cavity is opened, and the water valve is simple in structure, low in cost and capable of realizing one-in and two-out functions; in addition, the water valve is applied to the water purifying equipment, pure water washing of the membrane filter element can be achieved, and the problem that total dissolved solids of first water in the water purifying equipment are high is effectively solved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural view of an embodiment of a water valve provided herein;

FIG. 2 is an exploded schematic view of the water valve of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the water valve of FIG. 1;

FIG. 4 is a schematic view of a portion of the valve body of FIG. 1;

FIG. 5 is a schematic cross-sectional view of another state of the water valve of FIG. 1;

FIG. 6 is a side view schematic of the valve body of FIG. 4;

fig. 7 is a schematic structural diagram of an embodiment of a water purification apparatus provided by the present application.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Referring to fig. 1, fig. 2, fig. 3, and fig. 4, fig. 1 is a schematic structural view of an embodiment of a water valve provided by the present application, fig. 2 is an exploded schematic view of the water valve in fig. 1, fig. 3 is a cross-sectional view of the water valve in fig. 1, and fig. 4 is a schematic partial structural view of the valve body in fig. 1, where the water valve includes a valve body 1 and a valve core assembly 3.

The valve body 1 has a water inlet flow passage 151, a first water outlet flow passage 152, and a second water outlet flow passage 153. The valve body 1 is provided with a first water chamber 12 and a second water chamber 13, and the water inlet channel 151 and the first water outlet channel 152 are communicated through the first water chamber 12, thereby forming a water flow path.

The valve core assembly 3 is movably disposed in the valve body 1 and is used for opening the second water chamber 13, so that the water inlet channel 151 and the second water outlet channel 153 are communicated through the second water chamber 13. That is, when the second water chamber 13 is opened, the first water chamber 12 and the second water chamber 13 are communicated, and the water inlet flow passage 151 and the second water outlet flow passage 153 can also be communicated, thereby forming another water flow path. The water valve of the embodiment has the advantages of simple structure and low cost, and can realize the function of one inlet and two outlets.

As shown in fig. 5, fig. 5 is a schematic structural diagram of another state of the water valve in fig. 1, the valve core assembly 3 may also be used to close the second water chamber 13, and the first water chamber 12 and the second water chamber 13 are isolated, so that the communication between the water inlet channel 151 and the second water outlet channel 153 is cut off, in this state, the water inlet channel 151 and the first water outlet channel 152 of the water valve are communicated through the first water chamber 12, and the water valve can achieve a one-in one-out function.

The water valve is one of important parts in water purification unit, and water purification unit includes the membrane filter core of a class such as reverse osmosis membrane filter core, nanofiltration membrane filter core, and this water valve can set up on the pure water route of membrane filter core, and then realizes the control to water purification unit's system water process.

In particular, the water valve can have two working states, namely a water production state and a flushing state. When the water valve is in a flushing state, the second water cavity 13 is opened by the valve core assembly 3, the water inlet channel 151 is communicated with the second water outlet channel 153 through the second water cavity 13, the water inlet channel 151 is communicated with the first water outlet channel 152 through the first water cavity 12, the first water outlet channel 152 can be connected to a pure water taking end of the water purifying equipment, and the second water outlet channel 153 can be connected to a water inlet end of the membrane filter element so as to realize pure water flushing of the membrane filter element. In the flushing state, the water flow passage of the water valve is one inlet and two outlets. When the water valve is in a water making state, the second water cavity 13 is closed by the valve core assembly 3, the communication between the second water cavity 13 and the water inlet channel 151 is cut off, at the moment, the second water outlet channel 153 is closed, only the water inlet channel 151 is communicated with the first water outlet channel 152 through the first water cavity 12, and the first water outlet channel 152 is connected with a pure water taking end of the water purifying equipment, so that the water purifying equipment can make normal water making, and a water flow path of the water valve is one inlet and one outlet in the water making state.

The water valve of this embodiment has the function of one in two outs, controls opening or closing of second water cavity 13 through case subassembly 3, can realize the switching of system water state and the state of washing of water valve, and the reliability is higher. In addition, the water valve of the embodiment has simple structure and lower cost.

Further, referring to fig. 4, the valve body 10 is provided with a water inlet pipe 161, a first water outlet pipe 162 and a second water outlet pipe 163, the water inlet pipe 161 has a water inlet flow passage 151, the first water outlet pipe 162 has a first water outlet flow passage 152, and the second water outlet pipe 163 has a second water outlet flow passage 153. One end of the inlet pipe 151 may be communicated with the pure water end of the membrane cartridge, and the other end of the inlet pipe 161 is communicated with the first water chamber 12; one end and the first water cavity 12 intercommunication of first outlet pipe 162, the other end of first outlet pipe 162 can be with the pure water end intercommunication of getting water of water purification unit, the one end and the second water cavity 13 intercommunication of second outlet pipe 163, the other end and the intake end intercommunication of membrane filter core of second outlet pipe 163 to make the pure water flow back to the front end of membrane filter core, wash the membrane filter core.

Optionally, as shown in fig. 1 and 2, the water valve may further include a first check valve 171, and the first check valve 171 is located in the first water outlet flow passage 152 and is used for preventing water in the first water outlet flow passage 152 from flowing back, so as to improve reliability of the water valve. Further, the water valve may further include a second check valve 172, and the second check valve 172 is located in the second water outlet channel 153 and is used for preventing water in the second water outlet channel 153 from flowing back.

In the present embodiment, the first check valve 171 and the second check valve 172 are used to prevent the serial flow backflow of different water paths, thereby improving the reliability of the water valve.

Further, as shown in fig. 4, the valve body 1 may include a valve seat 11 having an inner cavity, an annular water blocking member 101 is protruded from a bottom wall of the valve seat 11, a second water chamber 13 is formed inside the annular water blocking member 101, and a first water chamber 12 is formed between an outer circumferential wall of the annular water blocking member 101 and an inner circumferential wall of the valve seat 11 at an interval. The valve body 1 of the embodiment has a simple structure, and the opening and closing of the second water chamber 13 are conveniently controlled.

Further, as shown in fig. 4, a first connection port 121 is disposed between the water inlet flow passage 151 and the first water chamber 12, a second connection port 122 is disposed between the first water outlet flow passage 152 and the first water chamber 12, and a vertical distance between the first connection port 121 and the bottom wall of the valve seat 11 is equal to a vertical distance between the second connection port 122 and the bottom wall of the valve seat 11. In this way, the water in the water passage can be made more fluid.

Optionally, as shown in fig. 6, the water inlet channel 151 and the second water outlet channel 153 may be arranged side by side along the depth direction of the valve seat 11, and in this way, the water flow paths are reasonably distributed, which is beneficial to reducing the volume of the water valve and is convenient for installing the water valve. The second outlet pipe 163 may be disposed on the bottom wall of the valve seat 11 to facilitate the outflow of water.

In other embodiments, the positional relationship among the water inlet channel 151, the first water outlet channel 152 and the second water outlet channel 153 can be adjusted according to actual needs. For example, the water inlet channel 151, the first water outlet channel 152, and the second water outlet channel 153 may be located on the same straight line, or the water inlet channel 151, the first water outlet channel 152, and the second water outlet channel 153 may be arranged in a triangle, so that the water valve can adapt to different application scenarios. The water valve of the embodiment is simple in structure, convenient to assemble and capable of achieving one inlet and two outlets.

Further, as shown in fig. 1, the valve body 1 further includes a valve cover 18, the valve cover 18 is disposed at the open end of the valve seat 11 in a sealing manner, as shown in fig. 3 and 5, the valve core assembly 3 includes a sealing member 31 disposed in the valve seat 11, and the sealing member 31 is movable relative to the annular water blocking member 101 to open or close the second water chamber 13 by the valve core assembly 3.

Specifically, when the water valve is in a flushing state, as shown in fig. 3, the sealing member 31 moves in a direction away from the annular water blocking member 101, at this time, the opening of the annular water blocking member 101 is opened by the sealing member 31, that is, the second water chamber 13 is opened by the valve core assembly 3, so that the first water chamber 12 is directly communicated with the second water chamber 13, at this time, water in the first water chamber 12 can flow out through the first water outlet flow channel 152, and can also flow into the second water outlet flow channel 153 from the second water chamber 13, that is, water flowing into the valve body 1 through the water inlet flow channel 151 can flow out of the valve body through the first water outlet flow channel 152 and the second water outlet flow channel 153 at the same time, and a function of one inlet and two outlets can be achieved.

As shown in fig. 5, when the water valve is in the water making state, the sealing member 31 moves to the opening of the annular water blocking member 101 to abut against the sealing member 31, so that the sealing member 31 seals and covers the second water chamber 13, that is, the second water chamber 13 is closed by the valve core assembly 3, the first water chamber 12 and the second water chamber 13 are sealed and isolated from each other, and water in the first water chamber 12 flows out through the first water outlet flow channel 152, thereby achieving the water making function of the water purifying apparatus.

As shown in fig. 3 and 5, in order to facilitate the control of the movement of the sealing member 31 in the valve body 1, the sealing member 31 and the bonnet 18 are spaced to form a pressure control chamber 5, and the first water chamber 12 and the second water chamber 13 are both located on a side of the sealing member 31 opposite to the pressure control chamber 5.

As shown in fig. 2, a pressure boosting hole 314 and a pressure relief hole 313 are formed in the sealing member 31, the pressure boosting hole 314 communicates with the first water chamber 12 and the pressure control chamber 5, and the pressure relief hole 313 communicates with the second water chamber 13 and the pressure control chamber 5. The valve core assembly 3 further comprises a valve core 32, the valve core 32 is movably arranged in the pressure control cavity 5, and when the water valve is in a flushing state, the valve core 32 opens the pressure relief hole 313; when the water valve is in a water making state, the valve core 32 closes the pressure relief hole 313; the aperture of the pressure relief hole 313 is larger than that of the pressure boosting hole 314.

Specifically, when the water valve is in a flushing state, the valve element 32 moves in the pressure control chamber 5 in a direction away from the pressure relief hole 313, so that the pressure relief hole 313 is opened, at this time, water in the pressure control chamber 5 can flow to the second water chamber 13 through the pressure relief hole 313, because the aperture of the pressure relief hole 313 is larger than the aperture of the pressure boosting hole 314, at this time, the water flow flowing into the pressure control chamber 5 is smaller than the water flow flowing out from the pressure control chamber 5, the water pressure of the pressure control chamber 5 rapidly decreases, the water pressure in the pressure control chamber 5 is smaller than the water pressure in the first water chamber 12, and under the water pressure of the first water chamber 12, the sealing element 31 moves in a direction away from the annular water blocking element 101, so that the first water chamber 12 is communicated with the second water chamber 13, and water can flow out through the first water outlet flow channel 152 and the second water outlet flow channel 153 at the same time.

When the water valve is in a water making state, after water enters the first water cavity 12 through the water inlet flow channel 151, the water in the first water cavity 12 enters the pressure control cavity 5 through the pressure boosting hole 314, because the pressure relief hole 313 is closed by the valve core 32, the water in the pressure control cavity 5 cannot be discharged, at the moment, the sealing element 31 is firmly sealed and closed on the annular water retaining element 101 under the action of the water pressure of the pressure control cavity 5, so that the second water cavity 13 is closed, at the moment, the water flows out of the first water outlet flow channel 152 in the first cavity 12, and at the moment, the water purifying equipment enters a normal water making state.

Further, as shown in fig. 3, the sealing member 31 includes a supporting plate 312 and a sealing diaphragm 311 disposed on one side of the supporting plate 312, the sealing diaphragm 311 is disposed on one side of the supporting plate 312 facing away from the valve cover 18, and an outer peripheral edge of one side of the sealing diaphragm 311 facing away from the supporting plate 312 is sealingly connected to an edge of the open end of the valve seat 11.

When the water valve is in a water making state, the middle surface of one side of the sealing diaphragm 311, which is back to the support plate 312, is in sealing abutment with the annular water blocking member 101, so that the first water cavity 12 is sealed and isolated from the second water cavity 13. When the water valve is in a flushing state, because the water pressure of the pressure control cavity 5 is lower than the water pressure of the first water cavity 12, under the action of the internal water pressure of the first water cavity 12, the sealing element 31 moves towards the direction away from the annular water blocking element 101, and the second water cavity 13 is opened, so that the first water cavity 12 is communicated with the second water cavity 13.

Furthermore, the water valve is preferably an electromagnetic valve, when the water valve is the electromagnetic valve, the state switching of the water valve can be controlled only by switching on and off, and the structure and the principle are simple.

Specifically, as shown in fig. 2 and 3, the water valve further includes an inductor coil 34 and a core iron 33, the inductor coil 34 is disposed in the valve body 1, and the inductor coil 34 is encapsulated. The inductor 34 is preferably disposed on the valve cover 18, the core iron 33 is disposed in the inductor 34, and one end of the core iron 33 is connected to the valve core 32 for cooperating with the valve core assembly 3 to open or close the second water chamber 13.

Preferably, the water valve further comprises a support spring 35, the support spring 35 and the core iron 33 are located inside the inductance coil 34, and the support spring 35 abuts against one end of the core iron 33 far away from the valve core 32. When the inductance coil 34 is electrified, electromagnetic force for driving the core iron 33 to move is generated, namely, the core iron 33 can drive the valve core 32 to move.

When the inductor 34 is energized, the core iron 33 extrudes the supporting spring 35 under the action of the electromagnetic force generated by the inductor 34, and drives the valve core 32 to move in the direction away from the sealing member 31, and the sealing member 31 opens the second water chamber 13 under the action of the water pressure, so that the water valve is switched to the flushing state, that is, the water valve enters water through the water inlet flow passage 151 and simultaneously exits water through the first water outlet flow passage 152 and the second water outlet flow passage 153.

When the inductor 34 is powered off, the core iron 33 drives the valve core 32 to move to a position close to the sealing element 31 under the action of the elastic force of the supporting spring 35, so that the valve core 32 closes the pressure relief hole 313, the sealing element 31 closes the second water cavity 13, and the water valve is switched to a water making state, that is, the water valve enters water through the water inlet flow channel 151 and exits water through the first water outlet flow channel 152.

In other embodiments, the water valve may have other configurations. For example, the water valve may include a motor, and the motor drives the valve element 32 to reciprocate to open the second water chamber 13 or close the second water chamber 13, so as to switch the flushing state and the water production state of the water valve. Alternatively, the water valve may be a mechanical valve comprising a push-pull operating member that reciprocates the spool 32 to open the second water chamber 13 or close the second water chamber 13.

The application provides a water valve plays important role in aqueous cleaning, water treatment system, sets up this water valve through the pure water route at membrane filter core, can realize the washing scheme to membrane filter core portably, effectively solves the high problem of first cup water total dissolved solids. And the water valve that this application provided simple structure, the cost is lower, can directly realize the conversion of water valve washing state and system water state through the switching of control second water cavity 13, and has higher reliability.

The present application further provides a water purification apparatus, as shown in fig. 7, fig. 7 is a schematic structural diagram of an embodiment of the water purification apparatus provided in the present application, the water purification apparatus 70 includes a membrane filter element 71 and a water valve 72, where the water valve 72 is the water valve described in any of the above embodiments, water filtered by the membrane filter element 71 includes pure water and wastewater, and the water valve 72 is disposed on a pure water path of the membrane filter element.

Specifically, the water inlet flow passage in the water valve 72 is communicated with the pure water outlet end of the membrane filter element 71, the first water outlet flow passage of the water valve 72 is communicated with the pure water taking end of the water purifying device 70, and the second water outlet flow passage of the water valve 72 is communicated with the water inlet end of the membrane filter element 71, so that the pure water discharged from the second water outlet flow passage flows back to the water inlet end of the membrane filter element 71, the pure water washing of the membrane filter element 71 is realized, and the total dissolved solids of the first cup of water of the water purifying device 70 are reduced.

Further, the water purifying apparatus 70 may further include: the water inlet valve 76 is connected with the water inlet end of the booster pump 77, the water outlet end of the booster pump 77 is connected with the water inlet end of the membrane filter element 71, water to be purified enters the booster pump 77 through the water inlet valve 76 for boosting, and the boosted water enters the membrane filter element 71 for filtering. In this embodiment, the second outlet flow path of the water valve 72 may be connected to the water inlet end of the booster pump 77 to implement pure water flushing of the membrane filter element 71.

The water purifying device 70 may further include a post-filter element 74, and the first outlet flow path of the water valve 72 may be connected to the post-filter element 74 through a high-pressure switch 73 to further filter the pure water filtered by the membrane filter element 72.

The water purifying device 70 further comprises a waste water valve 75, wherein the waste water valve 75 is positioned on a waste water waterway of the membrane filter element 71, and waste water generated after filtering by the membrane filter element 71 flows out through the waste water valve 75.

The water purifying device 70 may be, but is not limited to: water purifier, water purifying drinking machine, direct drinking machine, etc.

For the specific structure of the water valve 72, please refer to the drawings of the above embodiments and the related text descriptions, which are not repeated herein.

Since the water purifying apparatus 70 of this embodiment adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and are not described in detail herein.

The membrane cartridge 71 may be a reverse osmosis membrane cartridge, a nanofiltration membrane cartridge, or the like, and is not particularly limited herein.

In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A water valve, comprising:

the valve body (1) is provided with a water inlet flow channel (151), a first water outlet flow channel (152) and a second water outlet flow channel (153), a first water cavity (12) and a second water cavity (13) are arranged in the valve body (1), and the water inlet flow channel (151) is communicated with the first water outlet flow channel (152) through the first water cavity (12);

the valve core assembly (3) is movably arranged in the valve body (1) and is used for opening the second water cavity (13) so that the water inlet flow channel (151) is communicated with the second water outlet flow channel (153) through the second water cavity (13).

2. The water valve of claim 1,

the water valve further comprises a first one-way valve (171), the first one-way valve (171) being located within the first outlet flow passage (152).

3. The water valve of claim 1 or 2, further comprising a second one-way valve (172), the second one-way valve (172) being located within the second outlet flow passage (153).

4. The water valve as claimed in claim 1, wherein the valve body (1) comprises a valve seat (11) with an inner cavity, an annular water retaining member (101) is convexly arranged on the bottom wall of the valve seat (11), the second water cavity (13) is formed in the annular water retaining member (101), and the first water cavity (12) is formed by the interval between the outer circumferential wall of the annular water retaining member (101) and the inner circumferential wall of the valve seat (11).

5. The water valve as claimed in claim 4, wherein a first connection (121) is arranged between the water inlet channel (151) and the first water chamber (12), a second connection (122) is arranged between the first water outlet channel (152) and the first water chamber (12), and the vertical distance from the first connection (121) to the bottom wall of the valve seat (11) is equal to the vertical distance from the second connection (122) to the bottom wall of the valve seat (11).

6. The water valve as claimed in claim 4, wherein the inlet flow passage (151) and the second outlet flow passage (153) are arranged side by side in a depth direction of the valve seat (11).

7. The water valve according to claim 4, wherein the valve body (1) further comprises a valve cover (18), the valve cover (18) sealing the open end of the valve seat (11), the valve core assembly (3) comprising a sealing member arranged in the valve seat (11), the sealing member being movable relative to the annular water deflector (101) to open or close the second water chamber (13).

8. The water valve of claim 7, further comprising an inductor (34) and a core (33), the inductor (34) being disposed on the valve cap (18), the core (33) being located within the inductor (34) for cooperating with the spool assembly (3) to open or close the second water chamber (13).

9. A water purification apparatus, comprising a membrane cartridge (71) and a water valve (72) according to any one of claims 1 to 8, the water valve (72) being provided on a pure water circuit of the membrane cartridge (71).

10. The water purification apparatus of claim 9, wherein the first water outlet flow passage of the water valve (72) is communicated with a pure water taking end of the water purification apparatus (70), and the second water outlet flow passage of the water valve (72) is communicated with a water inlet end of the membrane filter element (71).

Images