WO2021244169A1

WO2021244169A1 - Main control valve, and multi-tank control valve bank comprising same

Info

Publication number: WO2021244169A1
Application number: PCT/CN2021/088591
Authority: WO
Inventors: 林和坤; 瞿亚明; 郑超
Original assignee: 开能健康科技集团股份有限公司
Priority date: 2020-06-02
Filing date: 2021-04-21
Publication date: 2021-12-09
Also published as: CN111503323A

Abstract

Disclosed are a main control valve and a multi-tank control valve bank comprising same. The main control valve is provided with a water intake cavity (111), a water output cavity (112) and an ejector (20). A surface of the main control valve is provided with a water inlet (1) and a water outlet (2), the water inlet (1) being in communication with the water intake cavity (111), and the water outlet (2) being in communication with the water output cavity (112); and the surface of the main control valve is further provided with: at least one first flow-dividing port (114), with the first flow-dividing port (114) being in communication with the water intake cavity (111); at least one second flow-dividing port (115), with the second flow-dividing port (115) being in communication with the water output cavity (112); and at least one third flow-dividing port (116), with the third flow-dividing port (116) being in communication with a water output end of the ejector (20). By means of arranging the flow-dividing ports in the water intake cavity (111) and the water output cavity (112) of the main control valve, the water inlet (1) and the water outlet (2) of the main control valve are shared and correspondingly connected to other valve bodies, such that multi-tank control and water production are achieved, without it being necessary to arrange additional flow-dividing devices and pipelines outside the valve bodies, thus simplifying the structure. The third flow-dividing port (116) is provided in the water output end of the ejector (20) and used for connecting the main control valve to salt liquid inlets (113) of other valve bodies, such that the sharing of the ejector (20) is achieved, and the structure of a valve body is simplified.

Description

Main control valve and multi-tank control valve group containing it

This application claims the priority of Chinese patent application 2020104879352 whose filing date is June 02, 2020. This application quotes the full text of the aforementioned Chinese patent application.

Technical field

The invention relates to a main control valve and a multi-tank control valve group containing the main control valve.

Background technique

In the application of a single tank water softener, when the hardness of the raw water is too high, if the normal rated flow is maintained, it will cause leakage and the water production will not meet the standard. In order to obtain qualified soft water, the rated water output can only be reduced, resulting in reduced water production that cannot meet the user's requirements. At the same time, after a single tank has been used for a period of time, it needs to be regenerated, which cannot meet the requirements for uninterrupted water production. In order to meet the water demand of users, double tanks are often used to make water, and the double tanks are controlled by multi-channel control valves. At present, the multi-channel control valve on the market, whether piston type, disc type or gate type, is generally composed of integrated valve body assembly, gear transmission mechanism and motor. Some automatic valves need to add circuit boards and control box. As a result, the valve body has high cost and large volume, and is not suitable for the supporting use of small household compact softening or filtering equipment.

In the patent application number 201920123963.9, a multi-channel control valve is introduced, but it is only a single-tank control and cannot meet the above-mentioned dual-tank control requirements.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the defects of large volume and complex structure of the multi-way control valve in the prior art, and to provide a main control valve and a multi-tank control valve group containing the main control valve.

The present invention solves the above technical problems through the following technical solutions:

A main control valve has a water inlet cavity, a water outlet cavity, and an ejector. The surface of the main control valve is provided with a water inlet and a water outlet, the water inlet is connected to the water inlet cavity, and the water outlet is connected To the water outlet cavity, the surface of the main control valve is also provided with:

At least one first diversion port, the first diversion port is connected to the water inlet cavity;

At least one second diversion port, the second diversion port is connected to the water outlet cavity;

At least one third diversion port, the third diversion port is connected to the water outlet of the ejector;

The main control valve further includes a tank connection port and a main valve, the tank connection port includes a first tank port and a second tank port, and the main valve is used to switch the water inlet and the first tank port The connected state;

The main control valve further includes a salt suction port and a main salt suction check valve. In the second tank port, the main salt intake check valve is provided on the passage between the water outlet end of the ejector and the second tank port, and the inlet of the main salt intake check valve is connected to the The water outlet end of the ejector and the negative pressure end of the ejector are connected to the salt suction port.

In this solution, the first tank port and the second tank port can correspond to any interface on the tank body. For ease of understanding, the first tank mouth corresponds to the upper mouth of the tank body, and the second tank mouth corresponds to the lower mouth of the tank body. When making water, raw water flows in from the first tank mouth and soft water flows out from the second tank mouth. By setting the water inlet and outlet of the main control valve with splitter ports, the water inlet and outlet of the main control valve are shared, so that they can be interconnected with other valve bodies to realize multi-tank control and water production without the need for valve bodies. Additional shunting devices and pipelines are set on the outside to simplify the structure and improve economic efficiency. At the same time, a third diversion port is provided at the water outlet of the ejector for interconnection of the main control valve with the salt inlets of other valve bodies to realize the sharing of the ejector, improve the utilization rate of the equipment, simplify the valve body structure, and meet the requirements of household water purification. The requirements of low-cost and miniaturization of water softeners and water softeners.

Preferably, the main control valve further includes a main drain valve and a drain port, both ends of the main drain valve are connected to the drain port and the first tank port, and the main drain valve is used to change the The state of communication between the drain port and the first tank port.

In this solution, a main drain valve is provided between the drain port and the first tank port to change the communication state of the two. In the process of regeneration, the main drain valve is opened, so that the regenerated water from the first tank port is discharged through the drain port. When making water, the main drain valve is closed.

Preferably, the main control valve further includes a main flushing valve, both ends of the main flushing valve are respectively connected to the water outlet and the second tank port, and the main flushing valve is used to switch the water outlet The state of communication with the second tank port.

In this solution, when the main control valve is connected in parallel with other valve bodies and connected to multiple tanks, part of the tank is regenerated and part of the tank contains water. The main flush valve can be opened to make the water outlet and the second tank port directly communicate. In turn, the soft water from the water outlet can directly enter the second tank port, and the resin bed can be flushed in large quantities and quickly without flushing with raw water, thereby improving the regeneration efficiency.

Preferably, the main control valve further includes a main check valve, both ends of the main check valve are respectively connected to the water outlet and the second tank port, and the inlet of the main check valve is connected to The second can mouth.

In this solution, when making water, the main check valve allows water to flow from the second tank port to the water outlet, and the water is blocked when the water flows in the reverse direction.

A multi-tank control valve group, comprising an auxiliary control valve and the above-mentioned main control valve. The auxiliary control valve includes a salt liquid inlet, an auxiliary salt absorption check valve and a third tank port. The salt liquid of the auxiliary control valve The inlet is connected to the third tank port, the passage between the salt liquid inlet and the third tank port is also provided with an auxiliary salt absorption check valve, and the inlet of the auxiliary salt absorption check valve is connected to the The salt inlet; the water inlet of the auxiliary control valve is connected and connected to the first branch port of the main control valve, and the water outlet of the auxiliary control valve is connected and connected to the second branch port of the main control valve , The salt liquid inlet of the auxiliary control valve is connected to and communicated with the third branch port of the main control valve.

In this solution, since the main control valve is provided with multiple split ports, the main control valve can be paired with multiple auxiliary control valves, or the main control valve can be paired with the main control valve to form a multi-tank control valve group. The multi-tank control valve group can control multiple tanks at the same time, and each tank runs and regenerates independently, which can realize the control process of separate regeneration at the same time. There is no need to shut down during use, which can meet the needs of users for uninterrupted water supply.

The third tank port is the lower port of the tank body used by the auxiliary control valve. The water flowing out of the third tank port is soft water during water production. An auxiliary salt absorption check valve is set in the auxiliary control valve. When the auxiliary control valve produces water, When the main control valve regenerates and absorbs salt, it prevents the water from the third tank port from flowing back into the salt liquid inlet to ensure the pressure difference between the inlet and outlet of the ejector for salt absorption.

Preferably, the multi-tank control valve group further includes a main water mixing valve, and both ends of the main water mixing valve are respectively connected to the water inlet of the main control valve and the water outlet of the main control valve. The main water mixing valve is used to change the communication state between the water inlet of the main control valve and the water outlet of the main control valve;

Alternatively, the multi-tank control valve group further includes an auxiliary water mixing valve, and both ends of the auxiliary water mixing valve are respectively connected to the water inlet of the auxiliary control valve and the water outlet of the auxiliary control valve. The water valve is used to change the communication state between the water inlet of the auxiliary control valve and the water outlet of the auxiliary control valve.

In this solution, the main water mixing valve and the auxiliary water mixing valve are referred to as water mixing valves for short. By opening the water mixing valve and controlling the flow through it, part of the hard water entering the control valve from the water inlet can directly enter the water outlet. The soft water flowing from the water outlet is mixed, and the water hardness of the control valve is adjusted. The water mixing valve can be installed in the main control valve or the auxiliary control valve. Because the main control valve and the auxiliary control valve are connected through internal pipelines, only one mixing valve can be used to realize sharing and simplify the structure.

Preferably, the main water mixing valve and the auxiliary water mixing valve are both needle-type regulating valves.

Preferably, the multi-tank control valve set further includes a connecting pipe, and the connecting pipe is divided into a water inlet connecting pipe, a water outlet connecting pipe and a salt liquid connecting pipe;

The water inlet of the auxiliary control valve is connected to the first branch outlet of the main control valve through the water inlet connecting pipe;

The water outlet of the auxiliary control valve is connected to the second branch outlet of the main control valve through the water outlet connecting pipe;

The salt liquid inlet of the auxiliary control valve is connected to the third branch port of the main control valve through the salt liquid connecting pipe.

In this solution, the connecting pipe connects the main control valve and the auxiliary control valve, which facilitates the use of different connecting pipe lengths to adapt to tanks of different diameters.

Preferably, the two ends of the connecting pipe connect the main control valve and the auxiliary control valve in a quick connection manner.

In this solution, the connecting pipe adopts a quick connection method, which is convenient for installation and disassembly.

On the basis of conforming to common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain preferred embodiments of the present invention.

The positive and progressive effects of the present invention are:

By setting split ports in the water inlet and outlet chambers of the main control valve, the water inlet and outlet of the main control valve are shared for interconnection with other valve bodies to achieve multi-tank control and water production without the need for valve bodies. Additional shunting devices and pipelines are set on the outside to simplify the structure and improve economic efficiency. At the same time, a third diversion port is provided at the water outlet end of the ejector for interconnection of the main control valve with the salt inlets of other valve bodies to realize the sharing of the ejector, improve the utilization rate of the equipment, simplify the valve body structure, and meet the needs of household soft water Machine low-cost, miniaturization requirements.

The multi-tank control valve group realizes the matching combination connection of the main control valve and the auxiliary control valve to form a multi-tank control valve group through a plurality of branch ports on the main control valve. The multi-tank control valve group can control multiple tanks at the same time, and each tank can operate and regenerate independently, and can realize the control process of separate regeneration at the same time. There is no need to stop during use, which can meet the needs of users for uninterrupted water supply.

Description of the drawings

Fig. 1 is a schematic diagram of the water production state of a dual-tank control valve group operating in a preferred embodiment of the present invention.

Fig. 2 is a schematic diagram of the operation state of the main tank salt absorption + slow washing and auxiliary tanks of the dual tank control valve assembly according to a preferred embodiment of the present invention.

Fig. 3 is a schematic diagram of the main tank flushing and auxiliary tank operating states of the dual-tank control valve group according to a preferred embodiment of the present invention.

Fig. 4 is a schematic diagram of the operation state of the auxiliary tank of salt absorption + slow washing and the main tank of the dual tank control valve group according to a preferred embodiment of the present invention.

Fig. 5 is a schematic diagram of the auxiliary tank flushing and the main tank operating state of the dual-tank control valve group according to a preferred embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a dual-tank control valve group according to a preferred embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a dual-tank control valve group according to a preferred embodiment of the present invention.

Description of reference signs:

Water inlet 1

Outlet 2

Drain 3

Salt suction port 4

Main tank lower mouth 5

Main tank top mouth 6

Auxiliary tank lower mouth 7

Auxiliary tank top 8

Main drain valve 9

Auxiliary drain valve 10

Main flush valve 11

Auxiliary flushing valve 12

Main valve 13

Auxiliary valve 14

Main check valve 15

Auxiliary check valve 16

Ejector 20

Main salt suction check valve 21

Auxiliary salt check valve 22

Inlet connection pipe 100

Outlet connection pipe 200

Salt connection pipe 300

Main control valve 50

Main tank connection port 51

Auxiliary control valve 60

Auxiliary tank connection port 61

Auxiliary mixing valve 62

Inlet chamber 111

Outlet chamber 112

Salt inlet 113

The first shunt 114

The second shunt 115

The third shunt 116

detailed description

In the following, the present invention will be explained more clearly and completely by way of embodiments in conjunction with the drawings, but the present invention is not limited to the scope of the described embodiments.

As shown in Figures 1-7, this embodiment discloses a main control valve 50, which includes a water inlet 1, a water outlet 2, a drain 3, a salt suction port 4, a main tank lower port 5, and a main tank upper port 6. , Main drain valve 9, main flush valve 11, main valve 13, main check valve 15, ejector 20, main tank connection port 51, water inlet chamber 111, water outlet chamber 112, first branch port 114, second branch port 115. The third shunt 116.

Among them, the water inlet 1 is connected to the water inlet cavity 111, the water outlet 2 is connected to the water outlet cavity 112, the first branch port 114 is connected to the water inlet cavity 111, the second branch port 115 is connected to the water outlet cavity 112, and the third branch port 116 is connected. To the water outlet end of the ejector 20. The main tank connection port includes a first tank port and a second tank port, and the first tank port and the second tank port can correspond to any interface on the tank body. To facilitate understanding, the first tank port corresponds to the upper port 6 of the main tank, and the second tank port corresponds to the lower port 5 of the main tank. When making water, the raw water flows in from the first tank port (the upper port 6 of the main tank), and the soft water flows from the second tank. The outlet (lower port 5 of the main tank) flows out. The main valve 13 is used to switch the communication state between the water inlet 1 and the first tank port (the upper port 6 of the main tank).

The main control valve 50 also includes a main salt intake check valve 21. The water inlet end of the ejector 20 is connected to the water outlet 2, and the water outlet end of the ejector 20 is connected to the third branch port 116 and the second tank port (the lower port of the main tank). 5) The outlet passage from the ejector 20 to the second tank port (the lower port of the main tank 5) is provided with a main salt intake check valve 21, and the inlet of the main salt intake check valve 21 is connected to the water outlet end of the ejector 20, Prevent the water from flowing backward from the second tank port (the lower port 5 of the main tank) into the water outlet end of the ejector 20. The negative pressure end of the ejector 20 is connected to the salt suction port 4 to facilitate the suction of salt when the ejector 20 is working.

In this embodiment, the main control valve 50 is provided with multiple diversion ports in the water inlet cavity 111 and the water outlet cavity 112 of the main control valve 50, and the water inlet 1 and the water outlet 2 of the main control valve 50 are shared for sharing with Other valve bodies are correspondingly interconnected to realize multi-tank control and water production, without the need to install additional shunting devices and pipelines outside the valve body, simplifying the structure and improving economic benefits. At the same time, a plurality of third branch ports 116 are provided at the water outlet end of the ejector 20 for the main control valve 50 to be interconnected with the salt inlet 113 of other valve bodies, so that the ejector 20 can be shared, the utilization rate of the equipment is improved, and the valve is simplified. The body structure meets the low-cost and miniaturization requirements of household water softeners.

As shown in Figure 2, both ends of the main drain valve 9 are connected to the drain port 3 and the first tank port (the upper port 6 of the main tank), and the main drain valve 9 is used to change the drain port 3 and the first tank port (on the main tank). The state of communication between ports 6). During the regeneration process, the main drain valve 9 is opened, so that the regenerated wastewater from the first tank port (the upper port 6 of the main tank) is discharged through the drain port 3. When making water, the main drain valve 9 is closed.

As shown in Figure 3, the two ends of the main flush valve 11 are respectively connected to the water outlet 2 and the second tank port (the lower port of the main tank 5), the main flush valve 11 is used to switch the water outlet 2 and the second tank port (main tank The connection state of the lower port 5). When the main control valve 50 is connected in parallel with other valve bodies and connected to multiple tanks, part of the tank regenerates part of the tank water to achieve uninterrupted water supply. The main flush valve 11 can be opened to make the water outlet 2 and the second tank The port (the lower port 5 of the main tank) is directly connected, so that the soft water from the water outlet 2 directly enters the second tank port (the lower port 5 of the main tank) to flush the resin bed in large quantities and quickly without flushing with raw water, which improves the regeneration efficiency.

As shown in Figure 4, the two ends of the main check valve 15 are respectively connected to the water outlet 2 and the second tank port (lower port 5 of the main tank), and the inlet of the main check valve 15 is connected to the second tank port (lower main tank).口5). The main check valve 15 allows water to flow from the second tank port to the water outlet 2, and it is blocked when the water flows in the reverse direction.

This embodiment discloses a multi-tank control valve group, which includes an auxiliary control valve 60 and the above-mentioned main control valve 50. The main tank connection port 51 on the main control valve 50 is used to connect to the main tank, and the main tank connection port 51 includes the main tank upper port 6 and the main tank lower port 5. The auxiliary control valve 60 is provided with an auxiliary tank connection port 61 for connecting with the auxiliary tank, and the auxiliary tank connection port 61 includes the auxiliary tank upper port 8 and the auxiliary tank lower port 7. The auxiliary control valve 60 also includes: an auxiliary drain valve 10, an auxiliary flushing valve 12, an auxiliary valve 14 and an auxiliary check valve 16.

As shown in FIG. 5, the auxiliary control valve 60 further includes a salt liquid inlet 113, an auxiliary salt absorption check valve 22 and a third tank port, wherein the third tank port is the lower port 7 of the auxiliary tank. The salt liquid inlet 113 of the auxiliary control valve 60 is connected to the third tank port (the lower port 7 of the auxiliary tank), and the passage between the salt liquid inlet 113 and the third tank port (the lower port 7 of the auxiliary tank) is also provided with auxiliary salt absorption Check valve 22, the inlet of the auxiliary salt absorption check valve 22 is connected to the salt liquid inlet 113, and the auxiliary salt absorption check valve 22 is provided in the auxiliary control valve 60 to prevent water from the third tank port (the lower port 7 of the auxiliary tank) Enter the salt inlet 113 countercurrently. The water inlet 1 of the auxiliary control valve 60 is connected and communicated with the first branch port 114 of the main control valve 50, and the water outlet 2 of the auxiliary control valve 60 is connected and communicated with the second branch port 115 of the main control valve 50, and the auxiliary control valve 60 The salt liquid inlet 113 of is connected to and communicated with the third branch port 116 of the main control valve 50.

Since the main control valve 50 is provided with multiple split ports, the main control valve 50 and the auxiliary control valve 60 can be paired to form a multi-tank control valve group, or the main control valve 50 and the main control valve 50 are paired to form a multi-tank control valve group. The multi-tank control valve group can control multiple tanks at the same time, and each tank runs and regenerates independently, which can realize the control process of separate regeneration at the same time. There is no need to shut down during use, which can meet the needs of users for uninterrupted water supply.

The multi-tank control valve group also includes an auxiliary water mixing valve 62. Both ends of the auxiliary water mixing valve 62 are respectively connected to the water inlet 1 of the auxiliary control valve 60 and the water outlet 2 of the auxiliary control valve 60. The auxiliary water mixing valve 62 is used to change The state of communication between the water inlet 1 of the auxiliary control valve 60 and the water outlet 2 of the auxiliary control valve 60. The auxiliary water mixing valve 62 is a needle-type regulating valve.

In this embodiment, the auxiliary water mixing valve 62 is referred to as a water mixing valve for short. By opening the water mixing valve and controlling the flow rate through it, part of the hard water entering the control valve from the water inlet 1 can directly enter the water outlet 2, and The soft water from the water outlet 2 is mixed to adjust the water hardness of the control valve. The water mixing valve can be set in the main control valve 50 or the auxiliary control valve 60. Because the main control valve 50 and the auxiliary control valve 60 are connected through internal pipelines, only one mixing valve can be used to share , Simplify the structure.

As shown in Figures 6 and 7, the multi-tank control valve set also includes a connecting pipe, which is divided into a water inlet connection pipe 100, a water outlet connection pipe 200 and a salt liquid connection pipe 300; the water inlet 1 of the auxiliary control valve 60 passes through the inlet The water connection pipe 100 is connected to the first branch port 114 of the main control valve 50; the water outlet 2 of the auxiliary control valve 60 is connected to the second branch port 115 of the main control valve 50 through the water outlet connection pipe 200; the salt solution of the auxiliary control valve 60 The inlet 113 is connected to the third branch port 116 of the main control valve 50 through the salt liquid connecting pipe 300. The connecting pipe connects the main control valve 50 and the auxiliary control valve 60 by means of quick connection, which facilitates the use of different connecting pipe lengths to adapt to tanks of different diameters. In other embodiments, the main control valve 50 and the auxiliary control valve 60 may also be communicated through a pipeline inside the valve body.

Figure 1 is a schematic diagram of the water production state of the dual-tank control valve group. The main drain valve 9 and the auxiliary drain valve 10 are closed, the driving parts of the main valve 13 and the auxiliary valve 14 have equal pressure, and the spring drive opens. The incoming water from the water inlet 1 enters the upper port 6 of the main tank and the upper port 8 of the auxiliary tank respectively. Double tanks At the same time, the water production is running, and the softened water returns to the control valve through the lower port 5 of the main tank and the lower port 7 of the auxiliary tank.

Figure 2 is a schematic diagram of the operating status of the main tank with salt absorption + slow washing and auxiliary tanks of the dual tank control valve group. When the main drain valve 9 is opened, the pressure imbalance acting on the two ends of the driving part of the main valve 13 by the restrictor moves and drives the sealing part to close the incoming water of the water inlet 1. At this time, due to the normal operation of the auxiliary tank to produce water, the water outlet 2 has softened water and the salt solution is sucked from the salt suction port 4 through the ejector 20, and then enters the lower port 5 of the main tank through the main salt check valve 21, and the resin layer is regenerated in a countercurrent flow. , Returns to the control valve from the upper port 6 of the main tank, and drains out of the tank from the drain port 3 through the restrictor and the main drain valve 9. At this time, since the pressure of the water outlet 2 is higher than the pressure in the main tank, the main check valve 15 and the auxiliary salt check valve 22 are both closed.

Figure 3 is a schematic diagram of the main tank flushing and auxiliary tank operation status of the dual tank control valve group. After the main flush valve 11 is opened, a large amount of water at the water outlet 2 bypasses the ejector 20, enters the resin layer through the main flush valve 11 for flushing, and is discharged from the tank through the drain port 3. After the regeneration of the main tank is completed, close the main drain valve 9 and the main flush valve 11 to return to the dual tank operation state shown in Fig. 1, and wait for the next activation of the auxiliary tank regeneration signal.

Figure 4 is a schematic diagram of the auxiliary tank salt absorption + slow washing and main tank operation status of the dual-tank control valve group. When the auxiliary drain valve 10 is opened, the pressure imbalance acting on the two ends of the driving part of the auxiliary valve 14 by the restrictor moves and drives the sealing part to close the incoming water of the water inlet 1. At this time, due to the normal operation of the main tank to produce water, the outlet 2 has softened water and the salt solution is sucked from the salt suction port 4 through the ejector 20, and then enters the lower port 7 of the auxiliary tank through the auxiliary salt check valve 22, and regenerates the resin layer in countercurrent. , Returns to the control valve from the upper port 8 of the auxiliary tank, and drains out of the tank through the drain port 3 through the restrictor plate and the auxiliary drain valve 10. At this time, since the pressure of the water outlet 2 is higher than the pressure in the auxiliary tank, the auxiliary check valve 16 and the main salt suction check valve 21 are both in a closed state.

Figure 5 is a schematic diagram of the auxiliary tank flushing and main tank operating status of the dual-tank control valve group. After opening the auxiliary flushing valve 12, a large amount of water at the water outlet 2 bypasses the ejector 20, enters the resin layer through the auxiliary flushing valve 12 for flushing, and then drains out of the tank through the drain 3. After the regeneration of the auxiliary tank is completed, the auxiliary drain valve 10 and the auxiliary flushing valve 12 are closed to return to the dual tank operation state as shown in FIG.

Although the specific embodiments of the present invention are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

A main control valve has a water inlet cavity, a water outlet cavity, and an ejector. The surface of the main control valve is provided with a water inlet and a water outlet, the water inlet is connected to the water inlet cavity, and the water outlet is connected To the water outlet cavity, it is characterized in that the surface of the main control valve is further provided with:

At least one first diversion port, the first diversion port is connected to the water inlet cavity;

At least one second diversion port, the second diversion port is connected to the water outlet cavity;

At least one third diversion port, the third diversion port is connected to the water outlet of the ejector;

The main control valve further includes a tank connection port and a main valve, the tank connection port includes a first tank port and a second tank port, and the main valve is used to switch the water inlet and the first tank port The connected state;

The main control valve further includes a salt suction port and a main salt suction check valve. In the second tank port, the main salt intake check valve is provided on the passage between the water outlet end of the ejector and the second tank port, and the inlet of the main salt intake check valve is connected to the The water outlet end of the ejector and the negative pressure end of the ejector are connected to the salt suction port.
The main control valve of claim 1, wherein the main control valve further comprises a main drain valve and a drain port, and both ends of the main drain valve are connected to the drain port and the first tank port. , The main drain valve is used to change the communication state between the drain port and the first tank port.
The main control valve according to claim 1 or 2, wherein the main control valve further comprises a main flushing valve, two ends of the main flushing valve are respectively connected to the water outlet and the second tank port , The main flush valve is used to switch the communication state of the water outlet and the second tank port.
The main control valve according to at least one of claims 1-3, wherein the main control valve further comprises a main check valve, and both ends of the main check valve are respectively connected to the water outlet and In the second tank port, the inlet of the main check valve is communicated with the second tank port.
A multi-tank control valve group, characterized in that it comprises an auxiliary control valve and the main control valve according to any one of claims 1-4, and the auxiliary control valve includes a salt liquid inlet and an auxiliary salt intake check Valve and a third tank port, the salt liquid inlet of the auxiliary control valve is connected to the third tank port, and an auxiliary salt absorption check is also provided on the passage between the salt liquid inlet and the third tank port Valve, the inlet of the auxiliary salt-absorbing check valve is connected to the salt liquid inlet;

The water inlet of the auxiliary control valve is connected and communicated with the first branch port of the main control valve, and the water outlet of the auxiliary control valve is connected and communicated with the second branch port of the main control valve. The salt liquid inlet of the valve is connected to and communicated with the third branch port of the main control valve.
The multi-tank control valve group according to claim 5, wherein the multi-tank control valve group further comprises a main water mixing valve, and both ends of the main water mixing valve are respectively connected to the inlet of the main control valve. A water port and a water outlet of the main control valve, and the main water mixing valve is used to change the communication state between the water inlet of the main control valve and the water outlet of the main control valve;

Alternatively, the multi-tank control valve group further includes an auxiliary water mixing valve, and both ends of the auxiliary water mixing valve are respectively connected to the water inlet of the auxiliary control valve and the water outlet of the auxiliary control valve. The water valve is used to change the communication state between the water inlet of the auxiliary control valve and the water outlet of the auxiliary control valve.
7. The multi-tank control valve group according to claim 6, wherein the main water mixing valve and the auxiliary water mixing valve are both needle-type regulating valves.
The multi-tank control valve set according to at least one of claims 5-7, wherein the multi-tank control valve set further comprises a connecting pipe, and the connecting pipe is divided into a water inlet connecting pipe, a water outlet connecting pipe and Salt connection pipe;

The water inlet of the auxiliary control valve is connected to the first branch outlet of the main control valve through the water inlet connecting pipe;

The water outlet of the auxiliary control valve is connected to the second branch outlet of the main control valve through the water outlet connecting pipe;

The salt liquid inlet of the auxiliary control valve is connected to the third branch port of the main control valve through the salt liquid connecting pipe.
8. The multi-tank control valve set according to claim 8, wherein the two ends of the connecting pipe connect the main control valve and the auxiliary control valve through a quick connection method.