CN116406345A

CN116406345A - Soft water valve and water softener

Info

Publication number: CN116406345A
Application number: CN202280005840.XA
Authority: CN
Inventors: 曾振杰; 杨旅; 罗陈; 曹国新
Original assignee: Midea Group Co Ltd; Guangdong Midea White Goods Technology Innovation Center Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea White Goods Technology Innovation Center Co Ltd
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2023-07-07
Also published as: WO2023159473A1

Abstract

The application discloses soft water valve and water softener, this soft water valve includes: the valve body is provided with a valve cavity, a water inlet channel, a water outlet channel, a first water passing channel and a second water passing channel, and the first water passing channel and the second water passing channel are used for being communicated with the resin tank; the valve core assembly comprises a plunger arranged in the valve cavity, a hollow channel is arranged in the plunger, the plunger is provided with a first position and a second position, and the switching between the softening waterway and the direct water supply waterway can be realized through the first position and the second position; the water channel plate is arranged at the outer side of the valve body and is provided with a first interface, a second interface and a third interface, and a plurality of water channels required by realizing the regeneration function are formed in the water channel plate; and the control valve assembly is arranged on the waterway plate and used for controlling the switching of a plurality of waterways in the waterway plate. According to the technical scheme, the plunger running distance can be shortened, the stay position is reduced, the requirements on manufacturing precision and motion control precision are reduced, the failure occurrence rate is reduced, and the running reliability is improved.

Description

Soft water valve and water softener

Technical Field

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

Background

The water softener generally adopts an ion exchange resin technology to remove calcium and magnesium ions in water, thereby reducing the generation of scale and improving the water use experience of bath and washing. And after the ion exchange resin is used for a period of time, the adsorption calcium and magnesium ions are saturated, and the ion exchange resin needs to be regenerated by adopting sodium chloride concentrated solution to recover the performance. Therefore, the water softener generally needs to be switched back and forth between a normal operation mode and a regeneration mode, and the regeneration mode generally comprises a plurality of procedures such as water injection, salt dissolution, salt absorption, backflushing, forward washing or backflushing, and the like, and a plurality of waterway switching is needed. The soft water valve is a core component of the water softener, and can realize the switching of a plurality of waterways through the soft water valve so as to realize different functional modes. However, the traditional soft water valve mostly adopts plunger movement to realize the switching of all waterways under the normal running mode and the regeneration mode, so that the plunger running distance is long, the stay positions are more, the requirements on manufacturing precision and motion control precision are higher, faults are easy to occur, and the running reliability is low.

Technical solution

The main objective of this application is to propose a soft water valve, aims at shortening plunger travel distance, reduces the stay position, reduces manufacturing accuracy requirement and motion control accuracy requirement, reduces the fault occurrence, promotes operational reliability.

To achieve the above object, a soft water valve according to the present application includes:

the valve body is provided with a valve cavity, and a water inlet channel, a water outlet channel, a first water passing channel and a second water passing channel which are all communicated with the valve cavity, wherein the first water passing channel and the second water passing channel are respectively communicated with the resin tank;

the valve core assembly comprises a plunger movably arranged in the valve cavity, a hollow channel is arranged in the plunger, the plunger is provided with a first position and a second position, the water inlet channel, the first water passing channel, the resin tank, the second water passing channel and the water outlet channel are communicated in the first position, and the water inlet channel, the hollow channel and the water outlet channel are communicated in the second position;

the water channel plate is arranged at the outer side of the valve body and is provided with a first interface, a second interface and a third interface, the first interface is communicated with the first water passing channel, the second interface is communicated with the second water passing channel, the third interface is communicated with the water outlet channel, and a plurality of water channels are formed in the water channel plate; and

and the control valve assembly is arranged on the waterway plate and used for controlling the switching of a plurality of waterways in the waterway plate.

In one embodiment, the valve core assembly further comprises a first sealing ring, a second sealing ring, a third sealing ring and a fourth sealing ring which are sleeved on the periphery of the plunger along the axial spacing; in the first position, the second sealing ring and the fourth sealing ring are in sealing fit with the plunger, and in the second position, the first sealing ring and the third sealing ring are in sealing fit with the plunger.

In one embodiment, the waterway plate is further provided with a salt absorbing port and a water outlet, a raw water channel, a salt absorbing channel, a converging channel and a water discharging channel are arranged in the waterway plate, the salt absorbing port is communicated with a water outlet of the salt tank, an input end of the salt absorbing channel is communicated with the salt absorbing port, an input end of the raw water channel is communicated with the third interface, an output end of the salt absorbing channel is converged with an output end of the raw water channel and is communicated to the second interface through the converging channel, and the water discharging channel is communicated with the first interface and the water outlet.

In one embodiment, the salt absorbing channel is provided with a water pump, and the water pump is used for pumping out the solution in the salt tank and conveying the solution along the salt absorbing channel.

In one embodiment, the water pump is an adjustable speed water pump.

In one embodiment, the salt absorbing passage is provided with a one-way valve, the one-way valve is positioned on the output side of the water pump, and the one-way valve is used for limiting liquid to flow back towards the water pump.

In one embodiment, the raw water channel is provided with a restrictor valve.

In one embodiment, the waterway plate is further provided with a water filling port and a water filling channel, the water filling port is used for being communicated with the water inlet of the salt tank, the water filling channel is used for communicating the raw water channel with the water filling port, the control valve assembly comprises a first control valve arranged on the raw water channel and a second control valve arranged on the water filling channel, the first control valve is used for conducting or blocking the raw water channel, and the second control valve is used for conducting or blocking the water filling channel.

In one embodiment, the waterway board is further provided with a connecting channel, the connecting channel communicates the confluence channel with the raw water channel, the control assembly further comprises a third control valve arranged on the connecting channel and a fourth control valve arranged on the drainage channel, the third control valve is used for conducting or blocking the connecting channel, and the fourth control valve is used for conducting or blocking the drainage channel.

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

In one embodiment, the salt absorbing passage is provided with a water pump, and in a state that the plunger is at the first position, the water pump, the first control valve, the second control valve, the third control valve and the fourth control valve are all closed; the water inlet channel, the first water passing channel, the second water passing channel and the water outlet channel are communicated to form a softening waterway.

In one embodiment, the salt absorbing passage is provided with a water pump, and in a state that the plunger is at the second position, the water pump, the first control valve, the second 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 communicated to form a direct water supply waterway.

In one embodiment, the salt absorbing passage is provided with a water pump, and the first control valve and the second control valve are both opened when the plunger is at the first position or the second position, 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 are communicated to form a water injection waterway.

In one embodiment, the salt absorbing passage is provided with a water pump, and the water pump, the second control valve and the third control valve are all opened when the plunger is at the first position or the second position, and the first control valve and the fourth control valve are all closed; the salt absorbing channel, the converging channel, the connecting channel, the raw water channel and the water injection channel are communicated to form a salt dissolving waterway.

In one embodiment, the salt absorbing passage is provided with a water pump, and the first control valve, the third control valve and the fourth control valve are all opened when the plunger is at the first position or the second position, and the water pump and the second control valve are all closed; the water inlet channel, the raw water channel, the connecting channel, the converging channel and the water discharging channel are communicated to form a backflushing waterway.

In one embodiment, the salt absorbing passage is provided with a water pump, and the water pump, the first control valve and the fourth control valve are all opened when the plunger is at the second position, and the second control valve and the third control valve are all closed; the water inlet channel, the raw water channel, the salt absorbing channel, the converging channel and the water discharging channel are communicated to form a regeneration waterway.

In one embodiment, the salt absorbing passage is provided with a water pump, and the first control valve and the fourth control valve are both opened when the plunger is in the second position, and the water pump, the second control valve and the third control valve are all closed; the water inlet channel, the raw water channel, the converging channel and the drainage channel are communicated to form a backwashing waterway.

In one embodiment, the soft water valve further comprises a drive mechanism drivingly connected to the plunger for driving the plunger to switch between the first position and the second position.

The application also provides a water softener, which comprises the soft water valve.

The technical scheme of this application passes through the structure subregion, and the valve body is satisfied the water route switching when normal operating and direct water supply with the cooperation of case subassembly, and the water route board is satisfied the water route switching when regeneration with the cooperation of control valve subassembly. Therefore, compared with the traditional soft water valve plunger, the soft water valve plunger only needs to stay at a plurality of positions, and the soft water valve plunger of the technical scheme only needs to stay at two positions, so that the structure of a valve body and a valve core assembly can be simplified, the running distance of the plunger is shortened, the stay positions are reduced, and then the manufacturing precision requirement and the motion control precision requirement can be reduced, and the fault occurrence rate is reduced. And through the structure subregion, with the layering setting of water route for the soft water valve has great promotion in aspects such as production equipment, cost control, maintainability and reliability.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from the structures shown in these drawings without inventive effort to a person of ordinary skill in the art.

FIG. 1 is a schematic view of an embodiment of a soft water valve of the present application;

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

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

FIG. 4 is a schematic view of the internal structure of the plunger of the soft water valve of FIG. 1 in a first position;

FIG. 5 is a schematic view of the internal structure of the plunger of the soft water valve of FIG. 1 in a second position;

FIG. 6 is a schematic view of the soft water valve of FIG. 3 with the control valve assembly omitted;

FIG. 7 is a schematic view illustrating an internal structure of the waterway plate of FIG. 3;

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

FIG. 9 is a schematic view of a solution circuit of the waterway plate of FIG. 7;

FIG. 10 is a schematic diagram of a backflushing waterway of the waterway plate of FIG. 7;

FIG. 11 is a schematic view of a regeneration waterway of the waterway plate of FIG. 7;

FIG. 12 is a schematic view of a backwash waterway of the waterway plate of FIG. 7;

fig. 13 is a schematic view of a waterway system of a water softener according to an embodiment of the present application.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	Soft water valve	33	Third interface
10	Valve body	34	Salt suction port
				11	Valve cavity	35	Water outlet
12	Water inlet channel	36	Water filling port
				121	Water inlet	301	Raw water channel
13	Water outlet channel	302	Salt suction channel
				131	With water-gap	303	Confluence channel
14	First water passing channel	304	Drainage channel
				15	Second water passing channel	305	Water injection channel
16	First water outlet	306	Connection channel
				17	Second water outlet	41	Water pump
18	Third water outlet	42	First control valve
				19	End cap	43	Second control valve
21	Plunger piston	44	Third control valve
				211	Hollow channel	45	Fourth control valve
22	First sealing ring	46	One-way valve
				23	Second sealing ring	47	Flow limiting valve
24	Third sealing ring	200	Resin pot
				25	Fourth sealing ring	201	Ion exchange resin
30	Waterway plate	300	Salt box
				31	First interface	301	Salt particles
32	Second interface

The realization, functional characteristics and advantages of the present application will be further described with reference to the embodiments, referring to the attached drawings.

Embodiments of the invention

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that, in the embodiment of the present application, directional indications (such as up, down, left, right, front, and rear … …) are referred to, and the directional indications are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" is presented throughout this document, it is intended to include three schemes in parallel, taking "a and/or B" as an example, including a scheme, or B scheme, or a scheme where a and B meet simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.

The water softener generally adopts an ion exchange resin technology to remove calcium and magnesium ions in water, and the ion exchange resin is regenerated through a salt solution after being saturated in absorbing the calcium and magnesium ions. Taking Na-type ion exchange resins as an example, the regeneration is generally performed by using a sodium chloride solution after the adsorption of calcium and magnesium ions reaches a saturated state. Wherein the softening and regenerating process involves in particular 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⁺

The existing water softener generally comprises a water softening valve, a salt tank and a resin tank, wherein salt particles (such as sodium chloride particles) are filled in the salt tank, ion exchange resin is filled in the resin tank, the water softening valve is connected with the resin tank, and the water inlet, the water using port, the water discharging port and the salt tank are all connected to the resin tank through the water softening valve. The soft water valve forms a core component of a waterway system of the soft water machine, and waterway flow direction switching and waterway on-off are carried out through the soft water valve, so that the soft water machine can realize the functions of normal operation, water injection, salt dissolution, salt absorption (regeneration), backwashing, backflushing, forward flushing and the like. The soft water valve of the traditional water softener mostly adopts plunger movement to realize the switching of all waterways under the normal running mode and the regeneration mode, so that the plunger running distance is long, the stay positions are more, the requirements on manufacturing precision and motion control precision are higher, faults are easy to occur, and the running reliability is low.

The present application proposes a soft water valve 100.

Referring to fig. 1 to 5, in an embodiment of the present application, the soft water valve 100 includes a valve body 10, a spool assembly, a waterway plate 30, and a control valve assembly. The valve body 10 is provided with a valve cavity 11, and a water inlet channel 12, a water outlet channel 13, a first water passing channel 14 and a second water passing channel 15 which are communicated with the valve cavity 11, wherein the first water passing channel 14 and the second water passing channel 15 are respectively communicated with the resin tank 200; the valve core assembly comprises a plunger 21 movably arranged in the valve cavity 11, a hollow channel 211 is arranged in the plunger 21, the plunger 21 is provided with a first position and a second position, the water inlet channel 12, the first water passing channel 14, the resin tank 200, the second water passing channel 15 and the water outlet channel 13 are communicated in the first position, and the water inlet channel 12, the hollow channel 211 and the water outlet channel 13 are communicated in the second position; the water channel plate 30 is disposed outside the valve body 10, the water channel plate 30 is provided with a first interface 31, a second interface 32 and a third interface 33, the first interface 31 is communicated with the first water passing channel 14, the second interface 32 is communicated with the second water passing channel 15, the third interface 33 is communicated 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 waterway plate 30 and is used for controlling the switching of a plurality of waterways in the waterway plate 30.

Specifically, as shown in fig. 1 and 4, the valve body 10 includes a valve body extending in a lateral direction, and the valve body is internally configured with a valve chamber 11, a water inlet passage 12, and a water outlet passage 13. The valve cavity 11 extends transversely, one end of the valve cavity 11 is in a closed arrangement, the other end of the valve cavity 11 is provided with an opening, and the open end of the valve cavity 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, a water inlet 121 is formed at one end, far away from the end cover 19, of the water inlet channel 12, the water inlet 121 can be used for externally connecting a tap water pipeline, and a first communication port communicated with the valve cavity 11 is formed in the inner peripheral wall of one end, close to the end cover 19, of the water inlet channel 12. The water outlet channel 13 is arranged on one side of the valve cavity 11 far away from the water inlet channel 12, a water outlet 131 is formed at one end of the water outlet channel 13 far away from the end cover 19, the water outlet 131 can be used for externally connecting a faucet or other water consuming equipment, a second communication port communicated with the valve cavity 11 is formed in the inner peripheral wall of one end of the water outlet channel 13 near the end cover 19, and the first communication port and the second communication port are respectively arranged near the two opposite ends of the valve cavity 11. The water inlet 121 and the water outlet 131 are arranged on the same side of the valve body 10, so that the overall layout is more regular. The valve body 10 further includes a connector extending downward from the bottom of the valve body, an external thread for connection with the resin tank 200 is provided on the outer circumferential surface of the connector, a first water passing channel 14 and a second water passing channel 15 are configured inside the connector, the first water passing channel 14 surrounds the periphery of the second water passing channel 15, the first water passing channel 14 extends downward and communicates with the water inlet of the resin tank 200, and the second water passing channel 15 extends downward and communicates with the water outlet of the resin tank 200.

The valve core assembly comprises a plunger 21 movably arranged in the valve cavity 11, wherein the plunger 21 can comprise a plunger head and a plunger rod arranged at one end of the plunger head, the plunger head is arranged in the valve cavity 11, the plunger rod penetrates out from the middle of the end cover 19, and the plunger head can be switched between a first position and a second position by applying a certain external force to the plunger rod. Referring to fig. 4 and 13, when the water softener is operating normally, the plunger 21 is switched to the first position, and at this time, the water inlet channel 12, the first water outlet channel 14, the resin tank 200, the second water outlet channel 15 and the water outlet channel 13 are communicated to form a softened water path, raw water flows into the valve cavity 11 from the water inlet channel 12, enters the resin tank 200 through the first water outlet channel 14, contacts with the ion exchange resin 201 in the resin tank 200, the ion exchange resin 201 displaces calcium and magnesium ions in the raw water to form softened water, and the softened water in the resin tank 200 flows out to the valve cavity 11 through the second water outlet channel 15 and is output through the water outlet channel 13 to provide softened water for users. As shown in fig. 5, when the plunger 21 is switched to the second position without supplying softened water, the plunger 21 can close the port of the first water passage 14, and at this time, raw water flows from the water inlet passage 12 into the valve chamber 11 and then does not enter the resin tank 200 for softening, but flows to the water outlet passage 13 through the hollow passage 211 of the plunger 21, thereby directly providing raw water to a user.

The waterway board 30 is disposed on the upper side of the valve body 10, the waterway board 30 may specifically include an upper plate body and a lower plate body that are mutually spliced, the plate body located on the lower side is provided with a first interface 31, a second interface 32 and a third interface 33 that penetrate along the thickness direction of the plate body, and one side of the valve body 10 near the waterway board 30 is correspondingly provided with a first water passing port 16, a second water passing port 17 and a third water passing port 18. The first interface 31 communicates with the first water passage 14 via the first water passing port 16, the second interface 32 communicates with the second water passage 15 via the second water passing port 17, and the third interface 33 communicates with the water outlet passage 13 via the third water passing port 18. A plurality of waterways required for realizing the regeneration function are constructed between the two plate bodies of the waterway plate 30, and may include, for example, a water injection waterway, a salt-dissolved waterway, a regeneration waterway, a backflushing waterway, and the like. Since the third port 33 communicates with the water outlet channel 13 via the third water passing port 18, the third port 33 for raw water supplied from the water inlet channel 12 can be supplied into the waterway plate 30 regardless of whether the plunger 21 is in the first position or the second position. The control valve assembly is arranged on the upper side of the waterway plate 30, and a plurality of waterways in the waterway plate 30 can be controlled to be switched through the control valve assembly so as to realize the regeneration function.

The technical scheme of this application passes through the structure subregion, and the valve body 10 meets the waterway switching when normal operating and direct water supply with the cooperation of case subassembly, and waterway board 30 meets the waterway switching when regeneration with the cooperation of control valve subassembly. Therefore, compared with the traditional soft water valve plunger, the soft water valve plunger only needs to stay at a plurality of positions, and the soft water valve plunger of the technical scheme only needs to stay at two positions, so that the structure of the valve body 10 and the valve core assembly can be simplified, the running distance of the plunger 21 is shortened, the stay positions are reduced, and then the manufacturing precision requirement and the motion control precision requirement can be reduced, and the fault occurrence rate is reduced. And through the structure subregion, with the layering setting of water route for soft water valve 100 has great promotion in aspects such as production equipment, cost control, maintainability and reliability.

In addition, the plunger of the conventional soft water valve 100 needs to be provided with a plurality of sealing rings due to a plurality of stay positions, and in the moving process of the plunger, the sealing rings with different sizes and specifications repeatedly rub, so that the abrasion probability of the sealing rings is high, and the water leakage risk of the soft water valve is high. The soft water valve 100 has the advantages that the stop positions of the plunger 21 are small, the stroke of the plunger 21 is relatively short, and the number of required sealing rings is relatively small, so that the abrasion probability of the sealing rings can be reduced, and the water leakage risk of the soft water valve 100 is reduced.

Referring to fig. 4 and 5, in one embodiment, the valve core assembly further includes a first sealing ring 22, a second sealing ring 23, a third sealing ring 24, and a fourth sealing ring 25 axially sleeved on the periphery of the plunger 21; in the first position, the second seal ring 23 and the fourth seal ring 25 are in sealing engagement with the plunger 21, and in the second position, the first seal ring 22 and the third seal ring 24 are in sealing engagement with the plunger 21.

Specifically, the first communication port of the water inlet channel 12 and the valve cavity 11 is located between the end cover 19 and the first sealing ring 22, the port of the first water passing channel 14 is located between the first sealing ring 22 and the second sealing ring 23, the port of the second water passing channel 15 is located between the second sealing ring 23 and the third sealing ring 24, and the second communication port of the water outlet channel 13 and the valve cavity 11 is located between the third sealing ring 24 and the fourth sealing ring 25. The plunger 21 comprises a plunger rod and a plunger head, wherein the plunger head comprises a first end part, a connecting part and a second end part which are sequentially connected, the first end part is connected with the plunger rod, and an annular groove is formed in the outer peripheral surface of the connecting part. As shown in fig. 4, when the plunger 21 is in the first position, the second sealing ring 23 is in sealing engagement with the first end of the plunger head, the fourth sealing ring 25 is in sealing engagement with the second end of the plunger head, and the third sealing ring 24 is disposed at intervals on the periphery of the connecting portion so as to conduct the softened water path. When the plunger 21 is in the second position, the first seal 22 is in sealing engagement with the first end and the third seal 24 is in sealing engagement with the second end to conduct the direct water supply waterway, as shown in fig. 5. The soft water valve 100 has fewer sealing rings, so that the abrasion probability of the sealing rings can be reduced, the water leakage risk is reduced, and the operation reliability is improved.

Referring to fig. 6 to 10, in one embodiment, the waterway board 30 is further provided with a salt absorbing port 34 and a water outlet 35, a raw water channel 301, a salt absorbing channel 302, a confluence channel 303 and a water outlet 304 are disposed in the waterway board 30, the salt absorbing port 34 is used for communicating with a water outlet of the salt tank 300, an input end of the salt absorbing channel 302 is communicated with the salt absorbing port 34, an input end of the raw water channel 301 is communicated with the third interface 33, an output end of the salt absorbing channel 302 is converged with an output end of the raw water channel 301 and is communicated to the second interface 32 via the confluence channel 303, and the water outlet 304 communicates the first interface 31 with the water outlet 35.

Specifically, as shown in fig. 11, in the regeneration mode, the brine in the brine tank 300 may be pumped out by a conventional ejector structure or by providing a water pump 41 on the brine suction channel 302, and the brine in the brine tank 300 enters the brine suction channel 302 through the brine suction port 34 and is then conveyed toward the confluence channel 303 through the brine suction channel 302; raw water (i.e., tap water) is conveyed to the drain passage 304 through the water inlet passage 12 in the valve body 10, flows into the raw water passage 301 in the waterway plate 30 through the third interface 33, and is conveyed toward the confluence passage 303 through the raw water passage 301; the brine and tap water are mixed to form regenerated brine, the regenerated brine is conveyed to the second connector 32 through the confluence channel 303, enters the valve cavity 11 through the second connector 32 and then enters the resin tank 200 through the second water passing channel 15, the regenerated brine is in contact with the ion exchange resin 201 in the resin tank 200 for regeneration, the regenerated wastewater enters the valve cavity 11 through the first water passing channel 14, enters the water draining channel 304 in the waterway plate 30 through the first connector 31, and is finally conveyed to the water draining outlet 35 through the water draining channel 304 for draining.

In one embodiment, the salt absorbing passage 302 is provided with a water pump 41, and the water pump 41 is used for pumping out the solution in the salt tank 300 and conveying the solution along the salt absorbing passage 302. Compared with the traditional ejector, the brine in the brine tank 300 is pumped out by taking the water pump 41 as power, so that the brine flow can not be influenced by external tap water pressure, the concentration and the flow speed of the regenerated liquid are ensured to be stable, and the regeneration performance is ensured to be stable and controllable.

In order to achieve an adjustable regeneration fluid concentration 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 the self-priming and speed-adjusting functions can be achieved. 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 brine formed by mixing brine conveyed by the brine suction channel 302 with tap water conveyed by the raw water channel 301. Regeneration liquid concentration= (brine concentration of brine tank 300. Water supply flow of water pump 41)/(output flow of raw water channel 302 + water supply flow of water pump 41). When the rotation speed of the water pump 41 is adjusted, the water supply flow of the water pump 41 can be adjusted, so that the concentration of the regenerated liquid is adjusted, and different use requirements are met. For example, when the hardness of raw water is fixed, the lower the salt concentration of the regeneration liquid is, the higher the salt efficiency is, and the minimum salt consumption can be realized by regulating the salt concentration of the regeneration liquid to be low, so that the requirements of small product volume, convenient salt adding, high salt adding frequency and low water consumption can be met. The higher the salt concentration of the regeneration liquid is, the higher the regeneration degree is, and the larger the primary water consumption of regeneration can be realized by adjusting the salt concentration of the regeneration liquid, so that the problems of larger product volume, inconvenient salt adding, lower salt adding frequency and larger water consumption or product form can be met. For example, when the hardness of raw water is changed, the hardness of raw water is different and the regeneration effect is different under different hardness conditions, for example, when the hardness is high (> 300 mg/L), the salt concentration of the regeneration liquid is increased to achieve a higher regeneration effect, and when the hardness is low (< 150 mg/L), the salt concentration of the regeneration liquid is reduced because the salt is wasted due to the excessive regeneration salt concentration.

Furthermore, to enable automated control of regeneration liquid concentration adjustment, 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 and electrically connected with a controller of the water softener. Detecting the salt concentration of the regenerated liquid passing through the confluence channel 303 by a salinity meter, and feeding back the detected current regenerated liquid concentration to the controller; the controller compares the current regenerated liquid concentration with the built-in regenerated liquid target concentration; if the target concentration is not reached, the controller controls the adjustable speed water pump 41 to perform rotation speed adjustment, and then water supply flow adjustment of the water pump 41 can be achieved, in the adjustment process, the salinity meter detects the concentration of the regenerated liquid in real time and feeds back to the controller for comparison, until the current concentration of the regenerated liquid reaches the target concentration, the controller controls the adjustable speed water pump 41 to keep the current rotation speed, and at the moment, the concentration of the regenerated liquid conveyed into the resin tank 12 by the confluence channel 15 is kept stable.

Referring to fig. 6 and 13, in one embodiment, the salt absorbing passage 302 is provided with a check valve 46, the check valve 46 is located on the output side of the water pump 41, and the check valve 46 is used for limiting the liquid flowing back toward the water pump 41. By arranging the check valve 46, the solution in the resin tank 200 can be prevented from entering the water pump 41 and then flowing back into the salt tank 300 after passing through the confluence channel 303 and the salt suction channel 302, so that the operation reliability of the whole waterway system is ensured.

In one embodiment, the raw water channel 301 is provided with a restrictor valve 47. The flow rate of the liquid outputted through the raw water channel 301 can be limited by the flow limiting valve 47 to satisfy the flow rate required at the time of regeneration. Further, the flow limiting valve 47 is an adjustable flow valve, and the output flow rate of the raw water channel 301 can be adjusted by the adjustable flow valve, so that the concentration of the regenerated liquid can be adjusted.

Before the regeneration mode, it is generally 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 achieve the automatic water injection function, in one embodiment, as shown in fig. 8, the waterway board 30 is further provided with a water injection port 36 and a water injection channel 305, the water injection port 36 is used for communicating with the water inlet of the salt tank 300, the water injection channel 305 communicates the raw water channel 301 with the water injection port 36, the control valve assembly comprises a first control valve 42 arranged in the input channel and a second control valve 43 arranged in the water injection channel 305, the first control valve 42 is used for conducting or blocking the raw water channel 301, and the second control valve 43 is used for conducting or blocking 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, and at this time, tap water enters the water injection passage 305 through the raw water passage 301 and flows into the salt tank 300 through the water injection passage 305 and the water injection port 36 to inject a certain amount of water into the salt tank 300.

The conventional water softener is usually static salt dissolution, 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, and the salt dissolution time required by adopting static salt dissolution is long, so that the salt dissolution efficiency is low. In order to accelerate the salt dissolution speed and realize the dynamic salt dissolution function, further, as shown in fig. 9, in an embodiment, the waterway board 30 is further provided with a connection channel 306, the connection channel 306 communicates the confluence channel 303 with the raw water channel 301, the control assembly further includes a third control valve 44 disposed in the connection channel 306 and a fourth control valve 45 disposed in the drain channel 304, the third control valve 44 is used for conducting or blocking the connection channel 306, and the fourth control valve 45 is used for conducting or blocking the drain channel 304.

Specifically, as shown in fig. 13, the junction point of the connection channel 306 and the raw water channel 301 is located between the upstream of the flow limiting valve 47 and the downstream of the first control valve 42, and the salt tank 301, the salt absorbing 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 communicated to form a salt dissolving circuit. After water injection is completed, the salt dissolving mode is entered, the water pump 41 is started, the second control valve 43 and the third control valve 44 are both opened, the salt water in the salt tank 300 flows out from the salt suction port 34 to the salt suction channel 302, then is conveyed to the water injection channel 305 through the confluence channel 303, the connection channel 306 and the raw water channel 301, and then flows back to the salt tank 300 through the water injection port 36, so that the salt dissolving is realized circularly and reciprocally, and the salt dissolving efficiency can be effectively improved. In order to monitor the salt water concentration in the salt dissolving process in real time, a salinity meter can be arranged on the salt dissolving circuit. For example, a salinity meter may be provided on the converging channel 303 and downstream of the junction of the connecting channel 44 and the converging channel 303, so that the salinity meter can be guaranteed to be on the salt-dissolving circuit. In the salt dissolving process, the brine concentration passing through the confluence channel 303 is monitored in real time by the salinity meter, when the brine concentration reaches a preset value, for example, reaches a preset saturated brine concentration, the completion of salt dissolving is indicated, and then the water pump can be turned off to finish the salt dissolving process, so that the salt can be dissolved to the preset concentration in the shortest time. In addition, during the regeneration process, the concentration of the regeneration liquid can also be detected in real time by the salinity meter on the confluence passage 303.

In addition, the water softener can be switched between various functional modes by controlling the operation 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-described embodiment, the first control valve 42, the second control valve 43, the third control valve 44, and the fourth control valve 45 may be solenoid valves, electric ball valves, mechanical ball valves, porcelain valves, or the like, as long as conduction and shutoff of the waterway can be achieved. Optionally, the first control valve 42, the second control valve 43, the third control valve 44 and the fourth control valve 45 are solenoid valves. Waterway switching during regeneration is realized through the cooperation of the waterway plate 30 and each electromagnetic valve, waterway logic can be simplified, and control is facilitated. Wherein, waterway board 30 and solenoid valve are mature part, and the reliability is high.

On the basis of the above embodiment, the salt suction channel 302 is provided with a water pump 41, and the control valve assembly includes a first control valve 42 provided in the raw water channel 301, a second control valve 43 provided in the water injection channel 305, a third control valve 44 provided in the connection channel 306, and a fourth control valve 45 provided in the water discharge channel 304. The soft water valve 100 can switch between the water paths by switching the states of the plunger 21, the water pump 41, and the control valve unit.

Specifically, in a state in which 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 45 are all closed; the water inlet channel 12, the first water passing channel 14, the second water passing channel 15 and the water outlet channel 13 are communicated 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 with the resin tank 200, the water outlet end of the first water passing passage 14 is used for communicating with the resin tank 200, and the water inlet end of the second water passing passage 15 is used for communicating with the resin tank 200. When the water softener is in the softening mode, raw water can be delivered into the resin tank 200 through the softening water path to be ion-exchanged to form softened water, and the softened water is delivered to the user water gap 131.

In a state where 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 closed; the water inlet channel 12, the hollow channel 211 and the water outlet channel 13 are communicated to form a direct water supply waterway. The raw water that has not been softened can be directly supplied to the user water port 131 by the direct water supply channel.

In a state in which the plunger 21 is in the first position or the second position, the first control valve 42 and the second control valve 43 are both opened, and the water pump 41, the third control valve 44, and the fourth control valve 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 communicated to form a water injection waterway. When the soft water valve 100 is used in a water softener, the water outlet end of the water injection passage 305 is adapted to communicate with the salt 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.

In a state in which 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 opened, and the first control valve 42 and the fourth control valve 45 are all closed; the salt absorbing channel 302, the confluence channel 303, the connection channel 306, the raw water channel 301 and the water injection channel are communicated to form a salt dissolving waterway. When the soft water valve 100 is used for a water softener, the water inlet end of the salt absorbing channel 302 is used for being communicated with the salt tank 300, and the water outlet end of the water injecting channel 305 is used for being communicated with the salt tank, so that the head end and the tail end of the salt dissolving water path are communicated with the salt tank 300 to form a circulating salt dissolving loop. When the water softener is in a salt dissolving mode, dynamic circulating flowing salt dissolving can be realized through the circulating salt dissolving loop. Compared with the traditional static soaking salt, the dynamic circulating flowing salt can be dissolved to a saturated state under the condition that the volume of the salt is smaller than that of water, so that the salt can be saved to a certain extent.

In a state in which 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 opened, and the water pump 41 and the second control valve 43 are both closed; the water inlet channel 12, the raw water channel 301, the connecting channel 306, the confluence channel 303 and the drainage channel 304 are communicated to form a backflushing waterway. When the soft water valve 100 is used in a water softener, the water outlet end of the confluence passage 303 is used to communicate with the resin tank 200, and the water inlet end of the drain passage 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 flushed loose through the backflushing waterway.

In a state in which 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 opened, 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 absorbing channel 302, the confluence channel 303 and the water discharging channel 304 are communicated to form a regeneration waterway. When the soft water valve 100 is used in a water softener, the water outlet end of the confluence passage 303 is used to communicate with the resin tank 200, and the water inlet end of the drain passage 304 is used to communicate with the resin tank 200. When the water softener is in the regeneration mode, brine can be supplied to the resin tank 200 through the regeneration waterway to regenerate the ion exchange resin 201 in the resin tank 200.

In a state in which the plunger 21 is in the second position, the first control valve 42 and the fourth control valve 45 are both opened, and the water pump 41, 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 confluence channel 303 and the drainage channel 304 are sequentially communicated to form a backwashing waterway. When the soft water valve 100 is used in a water softener, the water outlet end of the confluence passage 303 is used to communicate with the resin tank 200, and the water inlet end of the drain passage 304 is used to communicate with the resin tank 200. When the water softener is in the backwash mode, residual brine in the resin tank 200 can be flushed clean through the backwash waterway.

In the above embodiment, the switching of the plunger 21 between the first position and the second position may be performed manually or automatically, so as to enable more intelligent automatic control, and in one embodiment, the soft water valve 100 further includes a driving mechanism drivingly connected to the plunger 21 for driving the plunger 21 to switch between the first position and the second position. In particular, the drive mechanism may employ a rack and pinion structure, a nut and screw structure, or other drive structure to effect reciprocating linear movement of the plunger 21 between the first and second positions.

The application also provides a water softener, and this water softener includes salt case 300, resin jar 200 and soft water valve 100, and the concrete structure of this soft water valve 100 references above-mentioned embodiment, because this water softener has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and is here no longer in detail.

The following describes a specific operation procedure of the water softener waterway system according to an embodiment of the present application with reference to fig. 13. Wherein, the waterway system of the water softener includes a soft water valve 100, a resin tank 200, and a salt tank 300. Specifically, the soft water valve 100 includes a valve body 10, a valve cartridge assembly, a waterway plate 30, and a control valve assembly. The valve body 10 is provided with a valve cavity 11, a water inlet channel 12, a water outlet channel 13, a first water passing channel 14 and a second water passing channel 15, wherein the first water passing channel 14 and the second water passing channel 15 are respectively communicated with the resin tank 200; the valve core assembly comprises a plunger 21 movably arranged in the valve cavity 11, a hollow channel 211 is arranged in the plunger 21, and the plunger 21 has a first position and a second position. The waterway board 30 is provided with a first interface 31, a second interface 32, a third interface 33, a salt absorbing port 34, a water outlet 35 and a water injection port 36, and a raw water channel 301, a salt absorbing channel 302, a confluence channel 303, a water discharge channel 304, a water injection channel 305 and a connecting channel 306 are arranged in the waterway board 30. The resin tank 200 is filled with ion exchange resin, the salt tank 300 is filled with salt particles, the soft water valve 100 is connected with the resin tank 200 through the joint of the valve body 10, and the waterway plate 30 of the soft water valve 100 is connected with the salt tank 300 through the salt suction port 34 and the water injection port 36.

As shown in fig. 13, the input end of the salt absorbing passage 302 communicates with the water outlet of the salt tank 300 via the salt absorbing port 34, the input end of the raw water passage 301 communicates with the third port 33, the output end of the salt absorbing passage 302 merges with the output end of the raw water passage 301 and communicates with the second port 32 via the confluence passage 303, and the drain passage 304 communicates the first port 31 with the drain port 35. The output end of the water injection channel is communicated with the water inlet of the salt tank 300 through the water injection port 36, the input section of the water injection channel 305 is communicated 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 passage 302 is provided with a water pump 41, the raw water passage 301 is provided with a first control valve 42, the water injection passage 305 is provided with a second control valve 43, the connection passage 306 is provided with a third control valve 44, and the drain passage 304 is provided with a fourth control valve 45.

In the normal operation mode, the plunger 21 is in the first position, the water pump 41 is turned off, 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 fig. 4 and 13, tap water enters the water inlet channel 12 through the water inlet 121, enters the resin tank 200 through the valve cavity 11 and the first water passing channel 14, contacts with the ion exchange resin 201 in the resin tank 200 to form softened water, enters the water outlet channel 13 through the second water passing channel 15 and the valve cavity 11, and is conveyed to the water outlet 131 for a user through the water outlet channel 13 to provide the softened water for the user. The water outlet 131 can be used for connecting a faucet or other water consuming equipment.

In the water filling mode, the plunger 21 may be in both the first position and the second position, the water pump 41 may be turned off, the first control valve 42 and the second control valve 43 may be opened, and the third control valve 44 and the fourth control valve 45 may be closed. As shown in fig. 8 and 13, tap water enters the water inlet channel 12 through the water inlet 121, is delivered to the waterway board 30 through the third interface 33, and is then delivered into the salt tank 300 through the raw water channel 301, the water injection channel 305 and the water injection port 36 to be mixed with salt particles 301 in the salt tank 300.

In the salt dissolving mode, the plunger 21 may be in both the first position and the second position, the water pump 41 may be turned on, the second control valve 43 and the third control valve 44 may be opened, and the first control valve 42 and the fourth control valve 45 may be closed. As shown in fig. 9 and 13, the brine in the salt tank 300 flows out from the brine suction port 34 to the brine suction channel 302, is conveyed to the water injection channel 305 through the confluence channel 303, the connection channel 306 and the raw water channel 301, and flows back to the salt tank 300 through the water injection port 36, so that the circulating dynamic salt dissolution is realized, the brine in the salt tank 300 can reach the preset concentration rapidly, and the salt dissolution efficiency can be effectively improved.

In the recoil mode, the plunger 21 may be in both the first position and the second position, the water pump 41 may be turned off, the first control valve 42, the third control valve 44, and the fourth control valve 45 may be opened, and the second control valve 43 may be closed. As shown in fig. 10 and 13, tap water enters the water inlet channel 12 through the water inlet 121, is conveyed to the waterway plate 30 through the third interface 33, is conveyed to the second interface 32 through the raw water channel 301, the connecting channel 306 and the confluence channel 303, is conveyed to the resin tank 200 through the second interface 32 and the second water passing channel 15, is conveyed to the drain channel 304 through the first water passing channel 14 and the first interface 31, and is finally output to the drain outlet 35 through the drain channel 304 for draining. Among them, the backflushing mode may include a pre-regeneration backflushing and a post-regeneration backflushing.

In the regeneration mode, the plunger 21 is in the second position, the water pump 41 is on, 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 fig. 11 and 13, the water pump 41 pumps out brine in the brine tank 300 and conveys the brine to the confluence channel 303 through the brine absorbing channel 302, tap water enters the water inlet channel 12 through the water inlet 121, conveys the brine to the waterway plate 30 through the third interface 33, conveys the brine to the confluence channel 303 through the raw water channel 301, and conveys regenerated liquid formed by mixing the brine and the tap water to the second interface 32 through the confluence channel 303, conveys the regenerated liquid to the resin tank 200 through the second interface 32 and the second water passing channel 15, and is contacted and regenerated with the ion exchange resin 201 in the resin tank 200, and the regenerated waste water is conveyed to the water draining channel 304 through the first water passing channel 14 and the first interface 31, and finally is output to the water draining outlet 35 through the water draining channel 304.

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 fig. 12 and 13, tap water enters the water inlet channel 12 through the water inlet 121, is delivered to the waterway plate 30 through the third interface 33, is delivered to the confluence channel 303 through the raw water channel 301, is delivered to the resin tank 200 through the confluence channel 303, and is finally delivered to the water outlet 35 through the water outlet channel 304, so as to clean the regenerated residual brine.

The foregoing description is only of the optional embodiments of the present application, and is not intended to limit the scope of the patent application, and all equivalent structural changes made by the specification and drawings of the present application or direct/indirect application in other related technical fields are included in the scope of the patent protection of the present application.

Claims

1. A soft water valve, comprising:

2. The soft water valve of claim 1, wherein the valve cartridge assembly further comprises a first seal ring, a second seal ring, a third seal ring, and a fourth seal ring axially spaced around the plunger; in the first position, the second sealing ring and the fourth sealing ring are in sealing fit with the plunger, and in the second position, the first sealing ring and the third sealing ring are in sealing fit with the plunger.

3. The soft water valve of claim 1, wherein the waterway plate is further provided with a salt absorbing port and a water discharging port, a raw water channel, a salt absorbing channel, a converging channel and a water discharging channel are arranged in the waterway plate, the salt absorbing port is used for being communicated with a water outlet of the salt tank, an input end of the salt absorbing channel is communicated with the salt absorbing port, an input end of the raw water channel is communicated with the third interface, an output end of the salt absorbing channel is converged with an output end of the raw water channel and is communicated to the second interface through the converging channel, and the water discharging channel is used for communicating the first interface with the water discharging port.

4. A soft water valve according to claim 3, wherein the salt suction passage is provided with a water pump for pumping the solution in the salt tank and along the salt suction passage.

5. The soft water valve of claim 4, wherein the water pump is an adjustable speed water pump.

6. The soft water valve of claim 4, wherein the salt suction passage is provided with a one-way valve on an output side of the water pump, the one-way valve for restricting backflow of liquid toward the water pump.

7. A soft water valve according to claim 3, wherein the raw water channel is provided with a restrictor valve.

8. The soft water valve of any one of claims 3 to 6, wherein the waterway plate is further provided with a water injection port for communicating with a water inlet of the salt tank and a water injection passage for communicating the raw water passage with the water injection port, and the control valve assembly includes a first control valve provided to the raw water passage for conducting or blocking the raw water passage and a second control valve provided to the water injection passage for conducting or blocking the water injection passage.

9. The soft water valve of claim 8, wherein the waterway plate is further provided with a connection channel, the connection channel communicates the confluence channel with the raw water channel, the control assembly further comprises a third control valve provided at the connection channel and a fourth control valve provided at the drain channel, the third control valve being used for conducting or blocking the connection channel, and the fourth control valve being used for conducting or blocking the drain channel.

10. The soft water valve of claim 9, wherein the first control valve, the second control valve, the third control valve, and the fourth control valve each employ solenoid valves.

11. The soft water valve of claim 9, wherein the salt suction passage is provided with a water pump, and the water inlet passage, the first water passage, the second water passage, and the water outlet passage are communicated to form a softened water passage in a state in which the water pump, the first control valve, the second control valve, the third control valve, and the fourth control valve are all closed when the plunger is in the first position.

12. The soft water valve of claim 9, wherein the salt suction passage is provided with a water pump, and the water inlet passage, the hollow passage and the water outlet passage are communicated to form a direct water supply waterway in a state that the water pump, the first control valve, the second control valve, the third control valve and the fourth control valve are all closed when the plunger is at the second position.

13. The soft water valve of claim 9, wherein the salt suction passage is provided with a water pump, and the water inlet passage, the water outlet passage, the raw water passage, and the water injection passage are communicated to form a water injection passage in a state in which the first control valve and the second control valve are both opened and the water pump, the third control valve, and the fourth control valve are all closed when the plunger is in the first position or the second position.

14. The soft water valve of claim 9, wherein the salt suction passage is provided with a water pump, and wherein the water pump, the second control valve, and the third control valve are all open with the plunger in the first position or the second position, and wherein the first control valve and the fourth control valve are all closed; the salt absorbing channel, the converging channel, the connecting channel, the raw water channel and the water injection channel are communicated to form a salt dissolving waterway.

15. The soft water valve of claim 9, wherein the salt suction passage is provided with a water pump, and wherein the first control valve, the third control valve, and the fourth control valve are all open with the plunger in the first position or the second position, and wherein the water pump and the second control valve are both closed; the water inlet channel, the raw water channel, the connecting channel, the converging channel and the water discharging channel are communicated to form a backflushing waterway.

16. The soft water valve of claim 9, wherein the salt suction passage is provided with a water pump, and wherein the water pump, the first control valve, and the fourth control valve are all open with the plunger in the second position, and wherein the second control valve and the third control valve are all closed; the water inlet channel, the raw water channel, the salt absorbing channel, the converging channel and the water discharging channel are communicated to form a regeneration waterway.

17. The soft water valve of claim 9, wherein the salt suction passage is provided with a water pump, and wherein the first control valve and the fourth control valve are both open when the plunger is in the second position, and wherein the water pump, the second control valve, and the third control valve are all closed; the water inlet channel, the raw water channel, the converging channel and the drainage channel are communicated to form a backwashing waterway.

18. The soft water valve of claim 1, further comprising a drive mechanism drivingly connected to the plunger for driving the plunger to switch between the first position and the second position.

19. A water softener comprising a soft water valve according to any one of claims 1 to 18.