WO2023159473A1

WO2023159473A1 - Soft water valve and water softener

Info

Publication number: WO2023159473A1
Application number: PCT/CN2022/077933
Authority: WO
Inventors: 曾振杰; 杨旅; 罗陈; 曹国新
Original assignee: 广东美的白色家电技术创新中心有限公司; 美的集团股份有限公司
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2023-08-31
Also published as: CN116406345A

Abstract

A soft water valve (100) and a water softener, the soft water valve comprising: a valve body (10), which is provided with a valve cavity (11), a water inlet channel (12), a water outlet channel (13), a first water conduit (14) and a second water conduit (15), the first water conduit and the second water conduit being used for communicating with a resin tank (200); a valve core assembly, which comprises a plunger (21) provided in the valve cavity, a hollow channel (211) being provided in the plunger, and the plunger having a first position and a second position, wherein switching between a water softening path and a direct water supply water path can be achieved by means of the first position and the second position; a water path plate (30), which is disposed on an outer side of the valve body, the water path plate being provided with a first interface (31), a second interface (32), a third interface (33), and a plurality of water paths required for implementing a regeneration function being formed within the water path plate; and a control valve assembly, which is disposed on the water path plate and which is used for controlling switching among the plurality of water paths in the water path plate. The soft water valve can shorten the operating distance of the plunger, reduce stop positions, and reduce requirements for manufacturing precision and motion control precision.

Description

Water Softeners and Softeners

technical field

The present application relates to the technical field of water treatment, in particular to a water softener valve and a water softener.

Background technique

Water softeners generally use ion exchange resin technology to remove calcium and magnesium ions in water, thereby reducing the generation of scale and improving the water experience for bathing and washing. After a period of use, the ion exchange resin is saturated with calcium and magnesium ions, and needs to be regenerated with a concentrated sodium chloride solution to restore performance. Therefore, the water softener usually needs to switch back and forth between the normal operation mode and the regeneration mode, and the regeneration mode usually includes multiple procedures such as water injection, salt dissolution, salt absorption, backwashing, forward washing or backwashing, etc., requiring multiple water circuits. switch. Among them, the soft water valve is the core component of the water softener, through which a plurality of water channels can be switched to achieve different functional modes. However, most of the traditional soft water valves use the plunger to move to realize the switching of all waterways in the normal operation mode and the regeneration mode, which makes the plunger run a long distance and stay in many positions, which requires high manufacturing accuracy and motion control accuracy, and is prone to accidents. Faults, low operational reliability.

technical problem

The main purpose of this application is to propose a water softening valve, which aims to shorten the plunger's running distance, reduce the stop position, reduce the requirements for manufacturing accuracy and motion control accuracy, reduce the failure rate, and improve operational reliability.

technical solution

In order to achieve the above object, the soft water valve proposed by this application includes:

The valve body is provided with a valve cavity, and a water inlet passage, a water outlet passage, a first water passage and a second water passage all communicated with the valve chamber, the first water passage and the second water passage The channels are respectively used to communicate with the resin tank;

The valve core assembly includes a plunger movably arranged in the valve cavity, a hollow passage is provided in the plunger, the plunger has a first position and a second position, and in the first position, the The water inlet passage, the first water passage, the resin tank, the second water passage and the water outlet passage are in communication, and at the second position, the water inlet passage, the hollow passage and the The water outlet channel is connected;

The waterway plate is arranged on the outside of the valve body, the waterway plate is provided with a first interface, a second interface and a third interface, the first interface communicates with the first water passage, and the second interface communicates with the The second water passage is communicated, the third interface is communicated with the water outlet channel, and a plurality of waterways are formed in the waterway plate; and

The control valve assembly is arranged on the water channel board and is used to control the switching of multiple water channels in the water channel board.

In one of the embodiments, the valve core assembly further includes a first sealing ring, a second sealing ring, a third sealing ring and a fourth sealing ring sleeved on the periphery of the plunger at intervals along the axial direction; In the first position, the second sealing ring and the fourth sealing ring are sealingly engaged with the plunger, and in the second position, the first sealing ring and the third sealing ring are in contact with the plunger Seal fit.

In one of the embodiments, the water channel board is also provided with a salt suction port and a drain port, and the water channel board is provided with a raw water channel, a salt suction channel, a confluence channel and a drainage channel, and the salt suction port is used for contacting with salt The water outlet of the tank is connected, the input end of the salt suction channel is connected with the salt suction port, the input end of the raw water channel is connected with the third interface, and the output end of the salt suction channel is connected with the raw water channel The output ends of the outlets are combined and communicated to the second interface through the confluence channel, and the drain channel communicates the first interface with the drain port.

In one of the embodiments, the salt suction channel is provided with a water pump, and the water pump is used to draw out the solution in the salt tank and transport it along the salt suction channel.

In one of the embodiments, the water pump is an adjustable speed water pump.

In one of the embodiments, the salt suction channel is provided with a one-way valve, and the one-way valve is located on the output side of the water pump, and the one-way valve is used to limit the liquid from flowing back toward the water pump.

In one of the embodiments, the raw water channel is provided with a flow limiting valve.

In one of the embodiments, the water channel plate is also provided with a water injection port and a water injection channel, the water injection port is used to communicate with the water inlet of the salt tank, and the water injection channel connects the raw water channel and the water injection port connected, the control valve assembly includes a first control valve located in the raw water channel and a second control valve located in the water injection channel, the first control valve is used to conduct or block the raw water channel, so The second control valve is used for conducting or blocking the water injection channel.

In one of the embodiments, the waterway plate is further provided with a connecting channel, and the connecting channel communicates the confluence channel with the raw water channel, and the control assembly further includes a third control valve arranged in the connecting channel and a fourth control valve arranged in the drainage passage, the third control valve is used to connect or block the connecting passage, and the fourth control valve is used to connect or block the drainage passage.

In one of the embodiments, the first control valve, the second control valve, the third control valve and the fourth control valve are all solenoid valves.

In one of the embodiments, the salt suction channel is provided with a water pump, and when the plunger is in the first position, the water pump, the first control valve, the second control valve, the third When both the control valve and the fourth control valve are closed; the water inlet channel, the first water channel, the second water channel and the outlet channel are connected to form a softened water channel.

In one of the embodiments, the salt suction channel is provided with a water pump, and when the plunger is in the second position, the water pump, the first control valve, the second control valve, the third When both the control valve and the fourth control valve are closed; the water inlet channel, the hollow channel and the water outlet channel are connected to form a direct water supply channel.

In one of the embodiments, the salt suction channel is provided with a water pump, and when the plunger is in the first position or the second position, both the first control valve and the second control valve are open, When the water pump, the third control valve and the fourth control valve are all closed; the water inlet channel, the water outlet channel, the raw water channel and the water injection channel are connected to form a water injection channel.

In one of the embodiments, the salt suction channel is provided with a water pump, and when the plunger is in the first position or the second position, the water pump, the second control valve and the third control valve Valves are all open, the first control valve and the fourth control valve are closed; the salt suction channel, the confluence channel, the connecting channel, the raw water channel and the water injection channel are connected to form Salt water circuit.

In one of the embodiments, the salt suction channel is provided with a water pump, and when the plunger is in the first position or the second position, the first control valve, the third control valve and the When both the fourth control valves are open and the water pump and the second control valve are closed; the water inlet channel, the raw water channel, the connecting channel, the confluence channel and the drainage channel are connected to form Recoil the waterway.

In one of the embodiments, the salt suction channel is provided with a water pump, and when the plunger is in the second position, the water pump, the first control valve and the fourth control valve are all open, and the When both the second control valve and the third control valve are closed; the water inlet channel, the raw water channel, the salt suction channel, the confluence channel and the drainage channel are connected to form a regeneration waterway.

In one of the embodiments, the salt suction channel is provided with a water pump, and when the plunger is in the second position, both the first control valve and the fourth control valve are open, the water pump, the second When both the control valve and the third control valve are closed; the water inlet channel, the raw water channel, the confluence channel and the drainage channel are connected to form a backwash water channel.

In one of the embodiments, the water softening valve further includes a driving mechanism, the driving mechanism is drivingly connected with the plunger, and is used to drive the plunger to move between the first position and the second position. switch.

The present application also proposes a water softener, including the water softener valve as described above.

Beneficial effect

The technical solution of the application adopts structural divisions, the cooperation of the valve body and the valve core assembly meets the water channel switching during normal operation and direct water supply, and the cooperation of the water channel plate and the control valve assembly meets the water channel switching during regeneration. In this way, compared with the plunger of the traditional soft water valve that needs to stay in multiple positions, the plunger of the soft water valve in this technical solution only needs two stop positions, so that the structure of the valve body and the valve core assembly can be simplified, and the life of the plunger can be shortened. The running distance can reduce the stop position, which can reduce the manufacturing precision requirements and motion control precision requirements, and reduce the failure rate. And through structural partitioning, the waterway is arranged in layers, which greatly improves the soft water valve in terms of production assembly, cost control, maintainability and reliability.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to the structures shown in these drawings without creative effort.

Fig. 1 is the structural representation of an embodiment of the water softening valve of the present application;

Fig. 2 is a side view of the soft water valve in Fig. 1;

Fig. 3 is a top view of the soft water valve in Fig. 1;

Fig. 4 is a schematic diagram of the internal structure when the plunger of the water softening valve in Fig. 1 is in the first position;

Fig. 5 is a schematic diagram of the internal structure when the plunger of the water softening valve in Fig. 1 is in a second position;

Fig. 6 is a schematic structural view of the soft water valve in Fig. 3 without the control valve assembly;

Fig. 7 is a schematic diagram of the internal structure of the waterway plate in Fig. 3;

Fig. 8 is a schematic diagram of the water injection waterway of the waterway plate in Fig. 7;

Fig. 9 is a schematic diagram of the dissolved salt circuit of the waterway plate in Fig. 7;

Fig. 10 is a schematic diagram of the recoil waterway of the waterway plate in Fig. 7;

Fig. 11 is a schematic diagram of the regeneration waterway of the waterway plate in Fig. 7;

Figure 12 is a schematic diagram of the backwash waterway of the waterway plate in Figure 7;

Fig. 13 is a structural schematic diagram of an embodiment of the water system of the water softener of the present application.

Explanation of reference numbers:

标号 label	名称 name	标号 label	名称 name
100 100	软水阀 soft water valve	33 33	第三接口 third interface
10 10	阀体 valve body	34 34	吸盐口 Salt suction port
11 11	阀腔 Cavity	35 35	排水口 drain
12 12	进水通道 Inlet channel	36 36	注水口 Water inlet
121 121	进水口 water intake	301 301	原水通道 Raw water channel
13 13	出水通道 Outlet channel	302 302	吸盐通道 salt channel
131 131	用水口 Shuikou	303 303	汇流通道 confluence channel
14 14	第一过水通道 first water channel	304 304	排水通道 drainage channel
15 15	第二过水通道 Second water channel	305 305	注水通道 water injection channel
16 16	第一过水口 first water outlet	306 306	连接通道 connection channel
17 17	第二过水口 The second water outlet	41 41	水泵 water pump
18 18	第三过水口 third water outlet	42 42	第一控制阀 first control valve
19 19	端盖 end cap	43 43	第二控制阀 Second control valve
21 twenty one	柱塞 plunger	44 44	第三控制阀 third control valve
211 211	中空通道 hollow channel	45 45	第四控制阀 Fourth control valve
22 twenty two	第一密封圈 first sealing ring	46 46	单向阀 One-way valve
23 twenty three	第二密封圈 Second sealing ring	47 47	限流阀 Restrictor valve
24 twenty four	第三密封圈 third sealing ring	200 200	树脂罐 resin tank
25 25	第四密封圈 Fourth sealing ring	201 201	离子交换树脂 ion exchange resin
30 30	水路板 water board	300 300	盐箱 salt tank
31 31	第一接口 first interface	301 301	盐粒 grain of salt
32 32	第二接口 second interface	the	the

The realization, functional features and advantages of the present application will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Embodiments of the present invention

The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present application, the directional indication is only used to explain the relationship between the components in a certain posture. If the specific posture changes, the directional indication will also change accordingly.

In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes, and cannot be interpreted as indications or hints Its relative importance or implicitly indicates the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, if "and/or" or "and/or" appears throughout the text, its meaning includes three parallel plans, taking "A and/or B" as an example, including plan A, or plan B, or A and B is a solution that is satisfied at the same time. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , nor within the scope of protection required by the present application.

Water softeners generally use ion exchange resin technology to remove calcium and magnesium ions in water. After the ion exchange resin is saturated with calcium and magnesium ions, it is regenerated by salt solution. Taking Na-type ion exchange resin as an example, after the adsorption of calcium and magnesium ions reaches saturation, sodium chloride solution is generally used for regeneration. Among them, the softening and regeneration process specifically involves the following reactions:

Softening: 2R-SO ₃ Na + Ca ²⁺ → (R-SO ₃ ) ₂ Ca + 2Na ⁺

Regeneration: (R-SO ₃ ) ₂ Ca + 2Na ⁺ → 2R-SO ₃ Na + Ca ²⁺

Existing water softeners generally include soft water valves, salt tanks and resin tanks. Salt grains (such as sodium chloride particles) are housed in the salt tanks, and ion exchange resins are housed in the resin tanks. The soft water valves are connected to the resin tanks. , drain, and salt tank are all connected to the resin tank via a water softener valve. Among them, the soft water valve constitutes the core component of the water system of the water softener. The water flow direction is switched and the water circuit is turned on and off through the soft water valve, so that the water softener can realize normal operation, water injection + salt dissolution, salt absorption (regeneration), backwash, backwash , is rushing and other functions. Most of the soft water valves of traditional water softeners use plunger movement to switch all waterways in normal operation mode and regeneration mode, which makes the plunger run a long distance and stay in many positions, and requires high manufacturing accuracy and motion control accuracy. It is prone to failure and has low operational reliability.

This application proposes a soft water valve 100 .

Please refer to FIG. 1 to FIG. 5 , in an embodiment of the present application, the water softening valve 100 includes a valve body 10 , a valve core assembly, a water circuit board 30 and a control valve assembly. The valve body 10 is provided with a valve chamber 11, and a water inlet passage 12, an outlet passage 13, a first water passage 14 and a second water passage 15 which are all communicated with the valve chamber 11. The first water passage The passage 14 and the second water passing passage 15 are respectively used to communicate with the resin tank 200; Hollow channel 211, the plunger 21 has a first position and a second position, in the first position, the water inlet channel 12, the first water passage 14, the resin tank 200, the second The two water passages 15 communicate with the outlet channel 13. In the second position, the water inlet channel 12, the hollow channel 211 and the outlet channel 13 communicate; the water channel plate 30 is arranged on the valve Outside the body 10, the waterway plate 30 is provided with a first interface 31, a second interface 32 and a third interface 33, the first interface 31 communicates with the first water passage 14, and the second interface 32 communicates with the The second water channel 15 communicates, the third interface 33 communicates with the water outlet channel 13, and a plurality of water channels are formed in the water channel plate 30; the control valve assembly is arranged on the water channel plate 30 for Multiple waterways in the waterway plate 30 are controlled to switch.

Specifically, as shown in FIGS. 1 and 4 , the valve body 10 includes a valve body extending laterally, and a valve cavity 11 , a water inlet channel 12 and a water outlet channel 13 are configured inside the valve body. The valve chamber 11 extends laterally. One end of the valve chamber 11 is closed, and the other end is provided with an opening. The open end of the valve chamber 11 is provided with an end cover 19 . The water inlet channel 12 is arranged on one side of the valve cavity 11 in parallel, and the end of the water inlet channel 12 away from the end cover 19 is formed with a water inlet 121. The inner peripheral wall of the valve body is provided with a first communication port communicating with the valve cavity 11 . The water outlet channel 13 is set on the side of the valve cavity 11 away from the water inlet channel 12, and the end of the water outlet channel 13 away from the end cover 19 forms a water outlet 131, which can be used for externally connecting a faucet or other water-using equipment, and the water outlet channel 13 is close to the end cover 19 One end of the inner peripheral wall is provided with a second communication port communicating with the valve chamber 11, wherein the first communication port and the second communication port are respectively arranged near opposite ends of the valve chamber 11. Arranging the water inlet 121 and the water outlet 131 on the same side of the valve body 10 makes the overall layout more regular. The valve body 10 also includes a joint extending downward from the bottom of the valve body. The outer peripheral surface of the joint is provided with external threads for connecting with the resin tank 200. The first water passage 14 and the second water passage 15 are constructed inside the joint. The first water passage 14 surrounds the periphery of the second water passage 15, the first water passage 14 extends downwards and communicates with the water inlet of the resin tank 200, and the second water passage 15 extends downwards and communicates with the resin tank 200 The water outlet is connected.

The valve core assembly includes a plunger 21 movably arranged in the valve chamber 11, wherein the plunger 21 may include a plunger head and a plunger rod arranged at one end of the plunger head, and the plunger head is arranged in the valve chamber 11 Inside, the plunger rod passes through the middle of the end cap 19, and the plunger head can be switched between the first position and the second position by applying a certain external force to the plunger rod. Please combine Figure 4 and Figure 13, when the water softener is running normally, switch the plunger 21 to the first position, at this time, the water inlet channel 12, the first water passage 14, the resin tank 200, the second water passage 15 and The water outlet channel 13 is connected to form a softening water channel. The raw water flows into the valve chamber 11 from the water inlet channel 12, and then enters the resin tank 200 through the first water passage 14, and contacts with the ion exchange resin 201 in the resin tank 200. The ion exchange resin 201 The calcium and magnesium ions in the raw water are replaced to form demineralized water. The demineralized water in the resin tank 200 flows out to the valve chamber 11 through the second water passage 15 , and then is output through the water outlet passage 13 to provide demineralized water for users. As shown in Figure 5, when demineralized water does not need to be supplied, when the plunger 21 is switched to the second position, the plunger 21 can block the port of the first water passage 14, and at this time, the raw water flows from the water inlet passage 12 After flowing into the valve chamber 11, it will not enter the resin tank 200 for softening, but will flow to the water outlet channel 13 through the hollow channel 211 of the plunger 21 to directly provide raw water for users.

The water channel plate 30 is arranged on the upper side of the valve body 10, and the water channel plate 30 may specifically include two upper and lower plate bodies that are combined with each other. The plate body located on the lower side is provided with a first interface 31 and a second interface 32 penetrating along its thickness direction. Corresponding to the third interface 33 , the side of the valve body 10 close to the water channel plate 30 is provided with a first water outlet 16 , a second water outlet 17 and a third water outlet 18 . The first interface 31 communicates with the first water passage 14 through the first water outlet 16, the second interface 32 communicates with the second water passage 15 through the second water outlet 17, and the third interface 33 communicates with the water outlet through the third water outlet 18. Channel 13 communicates. Between the two boards of the waterway plate 30, multiple waterways required for the regeneration function are constructed, such as water injection waterways, dissolved salt water paths, regeneration waterways, backwash waterways, and backwash waterways. Since the third interface 33 communicates with the water outlet channel 13 through the third water outlet 18, no matter when the plunger 21 is in the first position or the second position, the third interface 33 of the raw water delivered by the water inlet channel 12 can be supplied to the water channel plate within 30. The control valve assembly is arranged on the upper side of the water channel plate 30, through which the plurality of water channels in the water channel plate 30 can be controlled to switch, so as to realize the regeneration function.

The technical solution of the present application is divided into structural parts, the valve body 10 cooperates with the valve core assembly to meet the water channel switching during normal operation and direct water supply, and the water channel plate 30 cooperates with the control valve assembly to meet the water channel switching during regeneration. In this way, compared with the plunger of the traditional water softening valve that needs to stay in multiple positions, the plunger of the water softening valve in this technical solution only needs two stopping positions, thereby simplifying the structure of the valve body 10 and the valve core assembly, and shortening the length of the plunger. The running distance of 21, reducing the stop position, can reduce the requirements of manufacturing precision and motion control precision, and reduce the incidence of failure. Moreover, through structural partitioning, the waterways are arranged in layers, so that the soft water valve 100 is greatly improved in terms of production assembly, cost control, maintainability, and reliability.

In addition, the plunger of the traditional soft water valve 100 needs to be provided with more sealing rings due to the many stop positions. During the movement of the plunger, multiple sealing rings of different sizes and specifications rub against repeatedly, resulting in a high probability of wear of the sealing rings, resulting in There is a high risk of water softening valve leakage. The plunger 21 of the water softening valve 100 of the present application has fewer places to stay, the stroke of the plunger 21 is relatively short, and the number of sealing rings required is relatively small, so that the wear probability of the sealing rings can be reduced, and the water softening valve 100 can be reduced. risk of water leakage.

Please refer to Figure 4 and Figure 5, in one of the embodiments, the valve core assembly further includes a first sealing ring 22, a second sealing ring 23, a third sealing ring 24 and the fourth sealing ring 25; in the first position, the second sealing ring 23 and the fourth sealing ring 25 are in sealing fit with the plunger 21; in the second position, the The first sealing ring 22 and the third sealing ring 24 are sealingly engaged with the plunger 21 .

Specifically, the first communication port between the water inlet passage 12 and the valve chamber 11 is located between the end cover 19 and the first sealing ring 22, and the port of the first water passage 14 is located at the Between the first sealing ring 22 and the second sealing ring 23, the port of the second water passage 15 is located between the second sealing ring 23 and the third sealing ring 24, and the water outlet passage 13 The second communication port with the valve cavity 11 is located between the third sealing ring 24 and the fourth sealing ring 25 . The plunger 21 includes a plunger rod and a plunger head, the plunger head includes a first end, a connecting portion and a second end connected in sequence, the first end is connected to the plunger rod, The outer peripheral surface of the connecting part is provided with an annular groove. As shown in Figure 4, when the plunger 21 is in the first position, the second sealing ring 23 is in sealing fit with the first end of the plunger head, and the fourth sealing ring 25 is in sealing fit with the second end of the plunger head, The third sealing ring 24 is arranged at intervals on the periphery of the connecting portion to conduct the softening water channel. As shown in FIG. 5 , when the plunger 21 is in the second position, the first sealing ring 22 is in sealing fit with the first end, and the third sealing ring 24 is in sealing fit with the second end, so as to conduct the direct water supply channel. The overall number of sealing rings used in the water softening valve 100 is small, thereby reducing the wear probability of the sealing rings, reducing the risk of water leakage, and improving operational reliability.

Please refer to Fig. 6 to Fig. 10, in one of the embodiments, the water circuit board 30 is also provided with a salt suction port 34 and a discharge port 35, and the water circuit board 30 is provided with a raw water channel 301, a salt suction channel 302, a confluence Channel 303 and drainage channel 304, the salt suction port 34 is used to communicate with the water outlet of the salt tank 300, the input end of the salt suction channel 302 is communicated with the salt suction port 34, the input end of the raw water channel 301 It communicates with the third interface 33, the output end of the salt suction channel 302 merges with the output end of the raw water channel 301 and communicates with the second interface 32 via the confluence channel 303, and the drainage channel 304 connects The first interface 31 communicates with the water outlet 35 .

Specifically, as shown in FIG. 11 , in the regeneration mode, the brine in the brine tank 300 can be pumped out through a traditional ejector structure or a water pump 41 on the salt suction channel 302 , and the brine in the brine tank 300 can be pumped out through the brine suction channel 302 . The port 34 enters the salt suction channel 302, and then is transported to the confluence channel 303 through the salt suction channel 302; the raw water (that is, tap water) is transported to the drainage channel 304 through the water inlet channel 12 in the valve body 10, and then flows in through the third interface 33 The raw water channel 301 in the water channel plate 30 is transported to the confluence channel 303 through the raw water channel 301; the brine is mixed with tap water to form regenerated brine, and the regenerated brine is transported to the second interface 32 through the confluence channel 303, and enters the valve cavity through the second interface 32 11 and then enter the resin tank 200 through the second water passage 15, the regenerated brine contacts the ion exchange resin 201 in the resin tank 200 for regeneration, and the regenerated waste water enters the valve cavity 11 through the first water passage 14, and then The drainage channel 304 entering into the water channel plate 30 through the first interface 31 is finally transported to the drainage outlet 35 through the drainage channel 304 for discharge.

In one of the embodiments, the salt suction channel 302 is provided with a water pump 41 , and the water pump 41 is used to pump out the solution in the salt tank 300 and transport it along the salt suction channel 302 . Compared with the traditional ejector, the water pump 41 is used as the power to pump out the brine in the brine tank 300, so that the brine flow can not be affected by the external tap water pressure, thereby ensuring the stability of the concentration and flow rate of the regeneration solution, and making the regeneration performance stable and reliable. control.

In order to realize the adjustable concentration of the regeneration liquid to meet different usage requirements, in one embodiment, the water pump 41 is an adjustable speed water pump. There are many types of speed-adjustable water pumps, as long as they can realize self-priming and speed regulation functions. In one embodiment, the water pump 41 is any one of a diaphragm pump, a vane pump and a plunger pump. Specifically, the regeneration liquid refers to the brine formed after the brine transported by the salt suction channel 302 is mixed with the tap water transported by the raw water channel 301 . Concentration of regeneration solution = (concentration of salt water in salt tank 300 * water supply flow rate of water pump 41 ) / (output flow rate of raw water channel 302 + water supply flow rate of water pump 41 ). When the rotation speed of the water pump 41 is adjusted, the water supply flow rate of the water pump 41 can be adjusted, so as to realize the adjustment of the concentration of the regeneration liquid to meet different usage requirements. For example, when the hardness of the raw water is constant, the lower the salt concentration of the regeneration solution, the higher the salt efficiency. Then by reducing the salt concentration of the regeneration solution, the minimum amount of salt can be used, which can meet the requirements of small product volume and convenient salt addition. The frequency of salt addition can be high, and the usage scenario or product form with low water consumption. The higher the salt concentration of the regeneration solution, the higher the degree of regeneration. Then, by increasing the salt concentration of the regeneration solution, the water consumption for regeneration can be large, which can meet the requirements of large product volume, inconvenient salt addition, and relatively low frequency of salt addition. Use scenarios or product forms with low water consumption. For another example, when the hardness of the raw water changes, under different hardness conditions, the hardness of the raw water is different, and the regeneration effect is different. For example, in the case of high hardness (>300mg/L), the salt concentration of the regeneration solution is increased. Higher regeneration effect, but in the case of low hardness (<150mg/L), too high regeneration brine concentration will cause waste of salt, so the salt concentration of the regeneration solution should be lowered.

In addition, in order to realize the automatic control of the concentration adjustment of the regeneration solution, in one embodiment, the confluence channel 303 may be provided with a salinity meter. The speed-adjustable water pump 41 and the salinity meter are respectively electrically connected to the controller of the water softener. Use a salinity meter to detect the salt concentration of the regeneration solution passing through the confluence channel 303, and feed back the detected current concentration of the regeneration solution to the controller; the controller compares the current concentration of the regeneration solution with the built-in target concentration of the regeneration solution; if If the target concentration is not reached, the controller controls the speed-adjustable water pump 41 to adjust the speed, thereby realizing the adjustment of the water supply flow of the water pump 41. During the adjustment process, the salinity meter detects the concentration of the regeneration solution in real time and feeds back to the controller for comparison until the current After the regeneration liquid concentration reaches the target concentration, the controller controls the speed-adjustable water pump 41 to maintain the current speed, and at this time, the concentration of the regeneration liquid transported by the confluence channel 15 to the resin tank 12 remains stable.

Please refer to Fig. 6 and Fig. 13, in one of the embodiments, the salt suction channel 302 is provided with a one-way valve 46, and the one-way valve 46 is located on the output side of the water pump 41, and the one-way valve 46 is used for To restrict the liquid from flowing back toward the water pump 41 . By setting the one-way valve 46, the solution in the resin tank 200 can be prevented from entering the water pump 41 through the confluence channel 303 and the salt suction channel 302, and then being poured into the salt tank 300, so as to ensure the operation reliability of the entire waterway system.

In one of the embodiments, the raw water channel 301 is provided with a restrictor valve 47 . The liquid flow output through the raw water channel 301 can be limited by the flow limiting valve 47 to meet the flow rate required for regeneration. Further, the flow limiting valve 47 is an adjustable flow valve, through which the output flow of the raw water channel 301 can be adjusted, and thus the concentration of the regeneration solution can be adjusted.

Before the regeneration mode, it is usually necessary to inject a certain amount of water into the salt tank 300 to dissolve the salt particles 301 in the salt tank 300 . In order to realize the automatic water injection function, in one of the embodiments, as shown in FIG. The water inlet is connected, and the water injection channel 305 communicates the raw water channel 301 with the water injection port 36. The control valve assembly includes a first control valve 42 arranged in the input channel and a first control valve 42 arranged in the water injection channel 305. The second control valve 43 , the first control valve 42 is used to connect or block the raw water channel 301 , and the second control valve 43 is used to connect or block the water injection channel 305 .

Specifically, in the water injection mode, both the first control valve 42 and the second control valve 43 are opened, at this time, tap water enters the water injection channel 305 through the raw water channel 301, and then flows into the salt tank 300 through the water injection channel 305 and the water injection port 36. to inject a certain amount of water into the salt tank 300.

Traditional water softeners usually dissolve salt statically, that is, after the salt tank 300 is filled with water, the salt particles 301 are soaked and dissolved for a long time to form saturated brine. Static salt-dissolving requires a long time for salt-dissolving and the efficiency of salt-dissolving is low. In order to speed up the speed of salt dissolution and realize the function of dynamic salt dissolution, further, as shown in FIG. 303 communicates with the raw water channel 301, the control assembly also includes a third control valve 44 located in the connecting channel 306 and a fourth control valve 45 located in the drainage channel 304, the third control valve 44 The fourth control valve 45 is used to connect or block the drainage channel 304 .

Specifically, as shown in FIG. 13 , the junction of the connecting channel 306 and the raw water channel 301 is located between the upstream of the restrictor valve 47 and the downstream of the first control valve 42, the salt box 301, the salt suction channel 302, the confluence channel 303, The connection channel 306, the raw water channel 301, the water injection channel 305, and the salt tank 301 are sequentially connected to form a salt-dissolving circuit. After the water injection is completed, enter the salt-dissolving mode, turn on the water pump 41, open the second control valve 43 and the third control valve 44, and the brine in the brine tank 300 flows out from the salt suction port 34 to the salt suction channel 302, and then passes through the confluence The channel 303, connecting channel 306, and raw water channel 301 are transported to the water injection channel 305, and then flow back into the brine tank 300 through the water injection port 36, and so on, so as to realize cyclic dynamic salt dissolution, so that the brine in the brine tank 300 can quickly reach the preset value. Concentration can effectively improve the efficiency of salt dissolution. In order to be able to monitor the brine concentration in the process of dissolving salt in real time, a salinity meter can be installed on the salt dissolving circuit. For example, a salinity meter can be provided on the confluence channel 303, and the salinity meter is located downstream of the junction of the connecting channel 44 and the confluence channel 303, so that the salinity meter can be ensured to be on the salt-dissolving circuit. During the salt dissolving process, the concentration of brine passing through the confluence channel 303 is monitored in real time by a salinity meter. When the concentration of brine reaches a preset value, such as reaching a preset saturated brine concentration, it indicates that the dissolving of salt is completed, and then the water pump can be turned off. End the salt dissolving process, so that the salt can be dissolved to the preset concentration in the shortest time. Moreover, during the regeneration process, the concentration of the regeneration solution can be detected in real time through the salinity meter on the confluence channel 303 .

In addition, the water softener can switch between multiple functional modes by controlling the operating states of the water pump 41 , the first control valve 42 , the second control valve 43 , the third control valve 44 and the fourth control valve 45 . In the above embodiments, the first control valve 42, the second control valve 43, the third control valve 44 and the fourth control valve 45 can be electromagnetic valves, electric ball valves, mechanical ball valves, tile valves, etc., as long as the waterway can be realized on and off. Optionally, the first control valve 42 , the second control valve 43 , the third control valve 44 and the fourth control valve 45 are all electromagnetic valves. Waterway switching during regeneration is realized through the cooperation of the waterway plate 30 and each electromagnetic valve, which can simplify the logic of the waterway and facilitate control. Among them, the waterway plate 30 and the solenoid valve are mature components with high reliability.

On the basis of the above embodiments, the salt suction channel 302 is provided with a water pump 41, the control valve assembly includes a first control valve 42 provided in the raw water channel 301, a second control valve 42 provided in the water injection channel 305 The valve 43 , the third control valve 44 provided in the connection passage 306 and the fourth control valve 45 provided in the drain passage 304 . The soft water valve 100 can realize the switching of each water channel through the state switching of the plunger 21 , the water pump 41 and the control valve assembly.

Specifically, when the plunger 21 is in the first position, the water pump 41, the first control valve 42, the second control valve 43, the third control valve 44 and the fourth control valve When the valves 45 are all closed, the water inlet channel 12 , the first water outlet channel 14 , the second water outlet channel 15 and the water outlet channel 13 communicate to form a softened water channel. When the soft water valve 100 is used in a water softener, the soft water valve 100 is connected to the resin tank 200, the water outlet end of the first water passage 14 is used to communicate with the resin tank 200, and the water inlet end of the second water passage 15 is used to communicate with the resin tank 200. Tank 200 communicates. When the water softener is in the softening mode, the raw water can be transported to the resin tank 200 through the softening water channel for ion exchange to form softened water, and then the softened water can be delivered to the user water port 131 .

When the plunger 21 is in the second position, the water pump 41, the first control valve 42, the second control valve 43, the third control valve 44 and the fourth control valve 45 are all In the closed state: the water inlet channel 12 , the hollow channel 211 and the water outlet channel 13 communicate to form a direct water supply channel. The unsoftened raw water can be directly delivered to the user water inlet 131 through the direct water supply channel.

When the plunger 21 is in the first position or the second position, both the first control valve 42 and the second control valve 43 are open, and the water pump 41, the third control valve 44 and the When the fourth control valves 45 are all closed, the water inlet channel 12 , the water outlet channel 13 , the raw water channel 301 and the water injection channel 305 are connected to form a water injection channel. When the water softening valve 100 is used in a water softener, the water outlet end of the water injection channel 305 is used to communicate with the brine tank 300 . When the water softener is in the water injection mode, a certain amount of water can be injected into the salt tank 300 through the water injection channel.

When the plunger 21 is in the first position or the second position, the water pump 41, the second control valve 43 and the third control valve 44 are all open, and the first control valve 42 and the third control valve 44 are all open. When the fourth control valves 45 are all closed, the salt absorption channel 302 , the confluence channel 303 , the connection channel 306 , the raw water channel 301 and the water injection channel are connected to form a salt solution channel. When the soft water valve 100 is used in a water softener, the water inlet end of the salt suction channel 302 is used to communicate with the salt tank 300, and the water outlet end of the water injection channel 305 is used to communicate with the salt tank, so that the first and last ends of the dissolved salt circuit are connected to the salt tank. 300 connected to form a circulating salt loop. When the water softener is in the salt-dissolving mode, the dynamic circulating flow of dissolved salt can be realized through the circulating salt-dissolving circuit. Compared with the traditional static soaking and dissolving salt, the use of dynamic circulating flow dissolving salt can dissolve to a saturated state even when the volume of salt is less than water, so it can save salt to a certain extent.

When the plunger 21 is in the first position or the second position, the first control valve 42, the third control valve 44 and the fourth control valve 45 are all open, and the water pump 41 and When the second control valves 43 are all closed, the water inlet channel 12 , the raw water channel 301 , the connection channel 306 , the confluence channel 303 and the drainage channel 304 are connected to form a backwash waterway. When the water softening valve 100 is used in a water softener, the outlet end of the confluence channel 303 is used to communicate with the resin tank 200 , and the water inlet end of the drain channel 304 is used to communicate with the resin tank 200 . When the water softener is in the backflushing mode, the ion exchange resin 201 in the resin tank 200 can be washed and loosened through the backflushing water circuit.

When the plunger 21 is in the second position, the water pump 41, the first control valve 42 and the fourth control valve 45 are all open, and the second control valve 43 and the third control valve 44 are all closed; the water inlet channel 12, the raw water channel 301, the salt absorption channel 302, the confluence channel 303 and the drainage channel 304 are connected to form a regeneration waterway. When the water softening valve 100 is used in a water softener, the outlet end of the confluence channel 303 is used to communicate with the resin tank 200 , and the water inlet end of the drain channel 304 is used to communicate with the resin tank 200 . When the water softener is in regeneration mode, brine can be delivered to the resin tank 200 through the regeneration water channel, so as to regenerate the ion exchange resin 201 in the resin tank 200 .

When the plunger 21 is in the second position, the first control valve 42 and the fourth control valve 45 are both open, and the water pump 41 , the second control valve 43 and the third control valve 44 are all open. In the closed state: the water inlet channel 12 , the raw water channel 301 , the confluence channel 303 and the drainage channel 304 are sequentially connected to form a backwash water channel. When the water softening valve 100 is used in a water softener, the outlet end of the confluence channel 303 is used to communicate with the resin tank 200 , and the water inlet end of the drain channel 304 is used to communicate with the resin tank 200 . When the water softener is in the backwashing mode, the residual brine in the resin tank 200 can be washed away through the backwashing water circuit.

In the above embodiments, the plunger 21 can be switched between the first position and the second position manually or automatically. In order to realize more intelligent automatic control, in one of the embodiments, the soft water The valve 100 further includes a driving mechanism, which is drivingly connected to the plunger 21 and used to drive the plunger 21 to switch between the first position and the second position. Specifically, the driving mechanism may adopt a rack and pinion structure, a nut screw structure or other driving structures to realize the reciprocating linear motion of the plunger 21 between the first position and the second position.

The present application also proposes a water softener, which includes a salt tank 300, a resin tank 200, and a water softening valve 100. For the specific structure of the water softening valve 100, refer to the above-mentioned embodiments, because this water softener adopts all the technologies of all the above-mentioned embodiments Therefore, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, and will not be repeated here.

The specific working process of the waterway system of the water softener according to an embodiment of the present application will be described below with reference to FIG. 13 . Wherein, the water system of the water softener includes a water softening valve 100 , a resin tank 200 and a salt tank 300 . Specifically, the soft water valve 100 includes a valve body 10, a valve core assembly, a water channel plate 30 and a control valve assembly. The valve body 10 is provided with a valve cavity 11, a water inlet passage 12, a water outlet passage 13, a first water passage 14 and a second water passage 15, and the first water passage 14 and the second water passage 15 are respectively used for contacting with the resin The tank 200 communicates; the valve core assembly includes a plunger 21 movably arranged in the valve cavity 11 , a hollow passage 211 is provided in the plunger 21 , and the plunger 21 has a first position and a second position. The waterway plate 30 is provided with a first interface 31, a second interface 32, a third interface 33, a salt suction port 34, a water discharge port 35, and a water injection port 36. The waterway plate 30 is provided with a raw water channel 301, a salt absorption channel 302, and a confluence channel 303 , drainage channel 304 , water injection channel 305 and connecting channel 306 . Ion exchange resin is housed in the resin tank 200, and salt grains are housed in the salt tank 300. The soft water valve 100 is connected with the resin tank 200 through the joint of the valve body 10, and the water circuit board 30 of the soft water valve 100 is connected with the salt water through the salt suction port 34 and the water injection port 36. box 300 connections.

As shown in Figure 13, the input end of the salt suction channel 302 communicates with the water outlet of the salt tank 300 via the salt suction port 34, the input end of the raw water channel 301 communicates with the third interface 33, and the output end of the salt suction channel 302 communicates with the raw water channel The output ends of 301 converge and communicate with the second interface 32 through the confluence channel 303 , and the drain channel 304 communicates with the first interface 31 and the drain port 35 . The output end of the water injection channel communicates with the water inlet of the salt tank 300 via the water injection port 36 , the input section of the water injection channel 305 communicates with the raw water channel 301 , and the connecting channel 306 communicates the confluence channel 303 with the raw water channel 301 . The salt suction channel 302 is provided with a water pump 41, the raw water channel 301 is provided with a first control valve 42, the water injection channel 305 is provided with a second control valve 43, the connecting channel 306 is provided with a third control valve 44, and the drainage channel 304 is provided with a fourth control valve. Valve 45.

In the normal operation mode, the plunger 21 is in the first position, the water pump 41 is closed, and the first control valve 42 , the second control valve 43 , the third control valve 44 and the fourth control valve 45 are all closed. As shown in Figure 4 and Figure 13, tap water enters the water inlet channel 12 through the water inlet 121, then enters the resin tank 200 through the valve cavity 11 and the first water passage 14, and after contacting the ion exchange resin 201 in the resin tank 200 Demineralized water is formed, and the demineralized water enters the water outlet channel 13 through the second water passage 15 and the valve cavity 11, and is delivered to the user water outlet 131 through the water outlet channel 13, so as to provide users with demineralized water. Wherein, the water outlet 131 can be used to connect to an external faucet or other water equipment.

In the water injection mode, the plunger 21 can be in the first position or the second position, the water pump 41 is closed, the first control valve 42 and the second control valve 43 are both open, and the third control valve 44 and the fourth control valve 45 are both closed . As shown in FIGS. 8 and 13 , tap water enters the water inlet channel 12 through the water inlet 121 , and then is delivered to the waterway plate 30 through the third interface 33 , and then delivered to the salt tank 300 through the raw water channel 301 , the water injection channel 305 and the water injection port 36 to mix with the salt grains 301 in the salt tank 300.

In the salt-dissolving mode, the plunger 21 can be in the first position and the second position, the water pump 41 is turned on, the second control valve 43 and the third control valve 44 are both opened, and the first control valve 42 and the fourth control valve 45 are both open. closure. As shown in Figures 9 and 13, the brine in the salt tank 300 flows out from the salt suction port 34 to the salt suction channel 302, and then is transported to the water injection channel 305 through the confluence channel 303, the connecting channel 306, and the raw water channel 301, and then through the water injection port 36 flows back into the salt tank 300, and so on, so as to achieve cyclical dynamic salt dissolution, so that the brine in the salt tank 300 can quickly reach the preset concentration, which can effectively improve the efficiency of salt dissolution.

In the recoil mode, the plunger 21 can be in the first position or the second position, the water pump 41 is closed, the first control valve 42, the third control valve 44 and the fourth control valve 45 are all opened, and the second control valve 43 is closed . As shown in Figures 10 and 13, tap water enters the water inlet channel 12 through the water inlet 121, and then is transported to the water channel plate 30 through the third interface 33, and then is transported to the second The interface 32 is transported to the resin tank 200 through the second interface 32 and the second water channel 15, and finally delivered to the drainage channel 304 through the first water channel 14 and the first interface 31, and finally output to the drain port by the drainage channel 304 35 discharge. Wherein, the recoil mode may include recoil before regeneration and recoil after regeneration.

In regeneration mode, the plunger 21 is in the second position, the water pump 41 is turned on, the first control valve 42 and the fourth control valve 45 are both opened, and the second control valve 43 and the third control valve 44 are both closed. As shown in Figure 11 and Figure 13, the water pump 41 pumps out the salt water in the salt tank 300 and delivers it to the confluence channel 303 through the salt suction channel 302, and the tap water enters the water inlet channel 12 through the water inlet 121, and then delivers it through the third interface 33 to the waterway plate 30, and then transported to the confluence channel 303 by the raw water channel 301, the brine is mixed with tap water to form a regeneration liquid, which is transported to the second interface 32 through the confluence channel 303, and the regeneration liquid is transported through the second interface 32 and the second water passage 15 To the resin tank 200, contact with the ion exchange resin 201 in the resin tank 200 for regeneration, the regenerated waste water is transported to the drain channel 304 through the first water passage 14 and the first interface 31, and finally output to the drain port 35 by the drain channel 304 discharge.

In the backwash mode, the plunger 21 is in the second position, the water pump 41 is turned off, the first control valve 42 and the fourth control valve 45 are both open, and the second control valve 43 and the third control valve 44 are both closed. As shown in Figures 12 and 13, tap water enters the water inlet channel 12 through the water inlet 121, and then is transported to the water channel plate 30 through the third interface 33, and then transported to the confluence channel 303 by the raw water channel 301, and then transported through the confluence channel 303 to the resin tank 200, and finally sent to the drain port 35 through the drain channel 304, so as to flush out the residual brine after regeneration.

The above are only preferred embodiments of the present application, and are not therefore limiting the patent scope of the present application. Under the inventive concept of the present application, the equivalent structural transformations made by using the description of the application and the contents of the accompanying drawings, or direct/indirect use All other relevant technical fields are included in the patent protection scope of the present application.

Claims

A water softening valve is characterized in that it comprises:

The valve body is provided with a valve cavity, and a water inlet passage, a water outlet passage, a first water passage and a second water passage all communicated with the valve chamber, the first water passage and the second water passage The channels are respectively used to communicate with the resin tank;

The valve core assembly includes a plunger movably arranged in the valve cavity, a hollow passage is provided in the plunger, the plunger has a first position and a second position, and in the first position, the The water inlet passage, the first water passage, the resin tank, the second water passage and the water outlet passage are in communication, and at the second position, the water inlet passage, the hollow passage and the The water outlet channel is connected;

The waterway plate is arranged on the outside of the valve body, the waterway plate is provided with a first interface, a second interface and a third interface, the first interface communicates with the first water passage, and the second interface communicates with the The second water passage is communicated, the third interface is communicated with the water outlet channel, and a plurality of waterways are formed in the waterway plate; and

The control valve assembly is arranged on the water channel board and is used to control the switching of multiple water channels in the water channel board.
The soft water valve according to claim 1, wherein the valve core assembly further comprises a first sealing ring, a second sealing ring, a third sealing ring and a first Four sealing rings; in the first position, the second sealing ring and the fourth sealing ring are sealingly engaged with the plunger; in the second position, the first sealing ring and the third sealing ring The sealing ring is sealingly engaged with the plunger.
The soft water valve according to claim 1, wherein the water channel plate is also provided with a salt suction port and a discharge port, and the water channel plate is provided with a raw water channel, a salt suction channel, a confluence channel and a drainage channel, and the The salt suction port is used to communicate with the water outlet of the salt box, the input end of the salt suction channel is connected with the salt suction port, the input end of the raw water channel is connected with the third interface, and the salt suction channel The output end merges with the output end of the raw water channel and communicates with the second interface through the confluence channel, and the drainage channel communicates the first interface with the drain port.
The soft water valve according to claim 3, wherein the salt suction channel is provided with a water pump, and the water pump is used to draw out the solution in the salt tank and transport it along the salt suction channel.
The soft water valve according to claim 4, wherein the water pump is an adjustable speed water pump.
The soft water valve according to claim 4, wherein the salt suction channel is provided with a one-way valve, the one-way valve is located on the output side of the water pump, and the one-way valve is used to limit the flow of liquid toward the Pump backflow.
The soft water valve according to claim 3, wherein the raw water channel is provided with a flow limiting valve.
The soft water valve according to any one of claims 3 to 6, characterized in that, the water channel plate is also provided with a water injection port and a water injection channel, the water injection port is used to communicate with the water inlet of the salt tank, the The water injection channel communicates the raw water channel with the water injection port, the control valve assembly includes a first control valve arranged in the raw water channel and a second control valve arranged in the water injection channel, the first control valve It is used to connect or block the raw water channel, and the second control valve is used to connect or block the water injection channel.
The soft water valve according to claim 8, characterized in that, the water channel board is also provided with a connecting channel, and the connecting channel communicates the confluence channel with the raw water channel, and the control assembly also includes a The third control valve connecting the channel and the fourth control valve arranged in the drainage channel, the third control valve is used to conduct or block the connecting channel, and the fourth control valve is used to conduct or block the drain channel. the drainage channel.
The water softening valve according to claim 9, wherein the first control valve, the second control valve, the third control valve and the fourth control valve are all solenoid valves.
The soft water valve according to claim 9, wherein the salt suction channel is provided with a water pump, and when the plunger is in the first position, the water pump, the first control valve, the second When the control valve, the third control valve and the fourth control valve are all closed, the water inlet passage, the first water passage passage, the second water passage passage and the water outlet passage are connected to form Soften waterways.
The soft water valve according to claim 9, wherein the salt suction channel is provided with a water pump, and when the plunger is in the second position, the water pump, the first control valve, the second When the control valve, the third control valve and the fourth control valve are all closed, the water inlet channel, the hollow channel and the water outlet channel are connected to form a direct water supply channel.
The soft water valve according to claim 9, wherein the salt suction channel is provided with a water pump, and when the plunger is in the first position or the second position, the first control valve and the When the second control valves are all open and the water pump, the third control valve, and the fourth control valve are all closed, the water inlet channel, the water outlet channel, the raw water channel and the water injection channel Connected to form a water injection channel.
The soft water valve according to claim 9, wherein the salt suction channel is provided with a water pump, and when the plunger is in the first position or the second position, the water pump, the second control valve and the third control valve are open, and the first control valve and the fourth control valve are closed; the salt suction channel, the confluence channel, the connecting channel, the raw water channel and the water injection channel are connected to form a dissolved salt channel.
The soft water valve according to claim 9, wherein the salt suction channel is provided with a water pump, and when the plunger is in the first position or the second position, the first control valve, the Both the third control valve and the fourth control valve are open, and the water pump and the second control valve are both closed; the water inlet channel, the raw water channel, the connecting channel, and the confluence channel and the drainage channel are connected to form a backwash waterway.
The soft water valve according to claim 9, wherein the salt suction channel is provided with a water pump, and when the plunger is in the second position, the water pump, the first control valve and the fourth When the control valves are all open and the second control valve and the third control valve are closed; the water inlet channel, the raw water channel, the salt suction channel, the confluence channel and the drainage channel Connected to form a regeneration waterway.
The soft water valve according to claim 9, wherein the salt suction channel is provided with a water pump, and when the plunger is in the second position, both the first control valve and the fourth control valve are open, so When the water pump, the second control valve and the third control valve are all closed; the water inlet channel, the raw water channel, the confluence channel and the drainage channel are connected to form a backwash water channel.
The water softening valve according to claim 1, further comprising a driving mechanism, the driving mechanism is drivingly connected with the plunger, and is used to drive the plunger in the first position and the second position to switch between.
A water softener, characterized by comprising the water softening valve according to any one of claims 1-18.