CN116457093A

CN116457093A - Waterway system and control method of water softener and water softener

Info

Publication number: CN116457093A
Application number: CN202280005836.3A
Authority: CN
Inventors: 杨旅; 曹国新; 曾振杰
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: 2023-07-18
Also published as: WO2023159464A1

Abstract

Water softener waterway system, control method and water softener, wherein the water softener waterway system comprises: a salt box (11); a resin tank (12); the salt absorbing device comprises a salt absorbing channel (13), a first water inlet channel (14) and a converging channel (15), wherein the water inlet end of the salt absorbing channel (13) is communicated with a salt tank (11), and the water outlet end of the salt absorbing channel (13) is converged with the water outlet end of the first water inlet channel (14) and is communicated with a resin tank (12) through the converging channel (15); a water pump (16) arranged in the salt suction channel (13) and used for pumping out the liquid in the salt tank (11) and flowing along the salt suction channel (13); and a flow restrictor (17) provided in the first water inlet channel (14) for restricting the flow rate of the liquid delivered by the first water inlet channel (14). The water path system of the water softener can improve the stability of the regeneration performance.

Description

Waterway system and control method of water softener and water softener

Technical Field

The application relates to the technical field of water treatment, in particular to a waterway system of a water softener, a control method and the 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. After a period of use, the ion exchange resin is saturated with adsorbed calcium and magnesium ions, and therefore needs to be regenerated by washing with strong brine to recover performance. The traditional water softener is generally provided with an ejector in a waterway system, tap water is used as power when regeneration is carried out, saturated brine dissolved in a salt tank is sucked out through the venturi effect of the ejector, and the brine is mixed with the tap water to generate strong brine which enters a resin tank for regeneration. The whole regenerated power adopts running water pressure, and when the running water pressure changes, the regeneration performance has great deviation, so that the stability of the regeneration performance is poor.

Disclosure of Invention

The main purpose of the application is to provide a waterway system of a water softener, which aims to improve the stability of regeneration performance.

To achieve the above object, a water path system of a water softener according to the present application includes:

a salt box;

a resin tank;

the salt absorbing device comprises a salt absorbing channel, a first water inlet channel and a converging channel, wherein the water inlet end of the salt absorbing channel is communicated with the salt box, and the water outlet end of the salt absorbing channel is converged with the water outlet end of the first water inlet channel and is communicated with the resin tank through the converging channel;

the water pump is arranged in the salt absorbing channel and is used for pumping out the liquid in the salt tank and flowing along the salt absorbing channel; and

the flow limiting piece is arranged in the first water inlet channel and used for limiting the liquid flow conveyed by the first water inlet channel.

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

In one embodiment, the water path system of the water softener comprises a softening water path, a water injection water path, a salt dissolving water path, a backflushing water path, a regeneration water path, a backflushing water path and a control device, wherein the control device is used for controlling the water path system of the water softener to switch among the water paths.

In one embodiment, the restrictor has a restrictor orifice for the passage of liquid, the restrictor orifice having a fixed or adjustable aperture size.

In one embodiment, the salt absorbing passage is provided with a one-way valve, the one-way valve is positioned on the water outlet 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 waterway system of the water softener further comprises a first control valve provided to the first water inlet passage, and the first control valve is used for opening or closing the first water inlet passage.

In one embodiment, the waterway system of the water softener further comprises a water injection channel and a second control valve arranged on the water injection channel, the water injection channel is used for communicating the first water inlet channel with the salt tank, and the second control valve is used for opening or closing the water injection channel.

In one embodiment, the waterway system of the water softener further comprises a connecting channel and a third control valve arranged on the connecting channel, the connecting channel is used for communicating the first water inlet channel with the converging channel, the junction point of the connecting channel and the first water inlet channel is positioned between the upstream of the flow limiting piece and the downstream of the first control valve, and the third control valve is used for opening or closing the connecting channel.

In one embodiment, the waterway system of the water softener further comprises a liquid storage container, a first conveying channel, a second conveying channel and a switch valve, wherein the salt absorbing channel is used for communicating the salt tank with the liquid storage container, the first conveying channel is used for communicating the liquid storage container with the salt tank, the second conveying channel is used for communicating the liquid storage container with the salt absorbing channel, a junction point of the second conveying channel and the salt absorbing channel is located on the water inlet side of the water pump, and the switch valve is used for controlling on-off states of the first conveying channel and the second conveying channel.

In one embodiment, the resin tank has a first port and a second port, the waterway system of the water softener further includes a drain passage communicating with the first port and a fourth control valve for opening or closing the drain passage, and the drain passage communicates with the second port.

In one embodiment, the waterway system of the water softener is provided with a water injection mode, when the water injection mode is adopted, the first control valve and the second control valve are in an open state, the third control valve, the fourth control valve and the water pump are in a closed state, and the first water inlet channel, the water injection channel and the salt tank are sequentially communicated to form a water injection waterway.

In one embodiment, the water path system of the water softener is provided with a salt dissolving mode, when the salt dissolving mode is adopted, the second control valve, the third control valve and the water pump are all in an open state, the first control valve and the fourth control valve are all in a closed state, and the salt tank, the salt absorbing channel, the converging channel, the connecting channel, the first water inlet channel, the water injection channel and the salt tank are sequentially communicated to form a circulating salt dissolving water path.

In one embodiment, the waterway system of the water softener has a backflushing mode, and in the backflushing mode, the first control valve, the third control valve and the fourth control valve are all in an open state, the second control valve and the water pump are all in a closed state, and the first water inlet channel, the connecting channel, the confluence channel, the resin tank and the drainage channel are sequentially communicated to form a backflushing waterway.

In one embodiment, the water path system of the water softener has a regeneration mode, and in the regeneration mode, the first control valve, the fourth control valve and the water pump are all in an open state, the second control valve and the third control valve are all in a closed state, and the salt tank, the salt suction channel, the first water inlet channel, the confluence channel, the resin tank and the drainage channel are sequentially communicated to form a regeneration water path.

In one embodiment, the waterway system of the water softener has a backwash mode, and in the backwash mode, the first control valve and the fourth control valve are in an open state, the second control valve, the third control valve and the water pump are in a closed state, and the first water inlet channel, the confluence channel, the resin tank and the drainage channel are sequentially communicated to form a backwash waterway.

In one embodiment, the waterway system of the water softener further includes a second water inlet channel in communication with the first port and a water outlet channel in communication with the second port.

In one embodiment, the waterway system of the water softener has a normal operation mode, and in the normal operation mode, the water pump, the first control valve, the second control valve, the third control valve and the fourth control valve are all in a closed state, and the second water inlet channel, the resin tank and the water outlet channel are sequentially communicated to form a softened waterway.

In one embodiment, the waterway system of the water softener further includes a bypass passage communicating the second water inlet passage with the water outlet passage.

The application also provides a control method of the waterway system of the water softener, which is used for the waterway system of the water softener, wherein the waterway system of the water softener is provided with a normal operation mode, a water injection mode, a salt dissolving mode and a regeneration mode, and the control method of the waterway system of the water softener comprises the following steps:

and controlling the on-off states of the water pump, the first control valve, the second control valve, the third control valve and the fourth control valve so as to enable the waterway system of the water softener to be switched among the normal operation mode, the water injection mode, the salt dissolving mode and the regeneration mode.

In one embodiment, the switching is performed sequentially in the order of the water injection mode, the salt dissolution mode and the regeneration mode;

switching to the water injection mode comprises the following steps:

the first control valve and the second control valve are opened, and the third control valve, the fourth control valve and the water pump are closed, so that the first water inlet channel, the water injection channel and the salt tank are sequentially communicated to form a water injection waterway;

switching to the salt dissolving mode comprises the following steps:

the second control valve, the third control valve and the water pump are all opened, and the first control valve and the fourth control valve are all closed, so that the salt tank, the salt suction channel, the confluence channel, the connecting channel, the first water inlet channel, the water injection channel and the salt tank are sequentially communicated to form a circulating salt dissolving waterway;

Switching to the regeneration mode comprises the steps of:

the first control valve, the fourth control valve and the water pump are all opened, and the second control valve and the third control valve are all closed, so that the salt tank, the salt absorbing channel, the first water inlet channel, the confluence channel, the resin tank and the water draining channel are sequentially communicated to form a regeneration waterway.

In one embodiment, the water path system of the water softener further comprises a back flushing mode, and the control method of the water path system of the water softener further comprises switching to the back flushing mode after the salt dissolving mode is completed and before entering the regeneration mode;

switching to the recoil mode includes the steps of:

the first control valve, the third control valve and the fourth control valve are all opened, the second control valve and the water pump are all closed, and the first water inlet channel, the connecting channel, the confluence channel, the resin tank and the drainage channel are sequentially communicated to form a backflushing waterway.

In one embodiment, the water path system of the water softener further comprises a backwash mode, and the control method of the water path system of the water softener further comprises switching to the backwash mode after the regeneration mode is completed, wherein the switching to the backwash mode comprises the following steps:

The first control valve and the fourth control valve are opened, the second control valve, the third control valve and the water pump are closed, and the first water inlet channel, the confluence channel, the resin tank and the drainage channel are sequentially communicated to form a backwashing waterway.

In one embodiment, switching the waterway system of the water softener to the normal operation mode includes the steps of:

and closing the water pump, the first control valve, the second control valve, the third control valve and the fourth control valve, so that the second water inlet channel, the resin tank and the water outlet channel are sequentially communicated to form a softened water channel.

The application also provides a water softener, comprising the waterway system of the water softener.

According to the technical scheme, the water pump is arranged in the salt suction channel, the salt water in the salt tank is pumped out by taking the water pump as power, and when the rotating speed of the water pump is fixed, the flow speed of the liquid in the salt suction channel is kept stable; the first water inlet channel is provided with a flow limiting piece, and the flow of the liquid in the first water inlet channel is limited by the flow limiting piece, so that the flow of the liquid output by the water outlet end of the first flow limiting piece is kept stable and cannot be influenced by the water pressure of tap water at the water inlet; therefore, the concentration and the flow rate of the regenerated liquid formed after the brine conveyed by the brine suction channel and the tap water conveyed by the first water inlet channel are mixed are kept stable, the regenerated liquid cannot be affected by the change of tap water pressure, and therefore the stability of the regeneration performance can be improved.

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 a prior art water softener;

FIG. 2 is a schematic view of a waterway of a prior art water softener in a salt absorbing (regenerating) mode;

FIG. 3 is a schematic view of a waterway system of the water softener of the present application;

FIG. 4 is a schematic view of the waterway system of the water softener of FIG. 3 in a normal operation mode;

FIG. 5 is a schematic view of the waterway system of the water softener of FIG. 3 in a water filling mode;

FIG. 6 is a schematic view of waterways of the water softener of FIG. 3 in a salt dissolving mode;

FIG. 7 is a schematic view of a waterway system of the water softener of FIG. 3 in a backflushing mode;

FIG. 8 is a schematic view of waterways of the water softener of FIG. 3 in a regeneration mode;

FIG. 9 is a schematic view of the waterway system of the water softener of FIG. 3 in a backwash mode;

FIG. 10 is a schematic view of a water circuit of the water softener of FIG. 3 in a normal operation mode;

FIG. 11 is a schematic view of a water circuit of the water softener of FIG. 3 in a direct water supply mode;

FIG. 12 is a schematic view of a water circuit of another embodiment of a water circuit system of a water softener in salt dissolving mode;

FIG. 13 is a schematic view of a water circuit of another embodiment of a water circuit system of a water softener in a regeneration mode;

FIG. 14 is a schematic flow chart of a first embodiment of a control method of a water softener of the present application;

FIG. 15 is a schematic flow chart of a second embodiment of a control method of a water softener of the present application;

FIG. 16 is a schematic flow chart of a third embodiment of a control method of a water softener of the present application;

FIG. 17 is a schematic flow chart of a fourth embodiment of a control method of a water softener of the present application;

fig. 18 is a schematic flow chart of a fifth embodiment of a control method of a water softener of the present application.

Reference numerals illustrate:

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

Detailed Description

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, 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 "and/or" and/or "are used throughout, the meaning includes three parallel schemes, for example," a and/or B "including a scheme, or B scheme, or a scheme where a and B are satisfied 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⁺

Referring to fig. 1, a schematic diagram of a waterway system of a water softener in the prior art is shown. The existing water softener generally comprises a valve head 1, a salt tank 2 and a resin tank 3, wherein salt particles 4 (such as sodium chloride particles) are filled in the salt tank 2, ion exchange resin 5 is filled in the resin tank 3, the valve head 1 is connected with the resin tank 3, and a water inlet a, a water outlet b, a water outlet c and the salt tank 2 are connected to the resin tank 3 through the valve head 1. The valve head 1 forms a core component of a waterway system of the water softener, and waterway flow direction switching and waterway on-off are carried out through the valve head 1, so that the water softener can realize the functions of normal operation, water injection, salt dissolution, salt absorption (regeneration), backwashing, backflushing, forward flushing and the like.

The existing water softener generally comprises a normal operation mode, a water injection and salt dissolution mode, a salt absorption (regeneration) mode, a backwashing mode and a forward flushing mode. For easy understanding, the water path flow direction of the conventional water softener in the above modes will be briefly described as follows.

In the normal operation mode, tap water flows from the water inlet a to the water inlet 6 of the resin tank, then enters the resin tank 3, calcium and magnesium ions in the tap water are adsorbed by the ion exchange resin 5 in the resin tank 3 to obtain softened water, and the softened water flows to the water outlet b for a user through the water outlet 7 of the resin tank.

In the water injection and salt dissolution mode, tap water flows from a water inlet a to the salt tank 2, and salt particles 4 in the salt tank 2 are contacted with water and soaked for a long time to form saturated brine or strong brine.

After the salt absorption (regeneration) mode is finished, water injection and salt dissolution are finished, the valve head 1 is switched through a waterway, tap water is used as power, saturated brine dissolved in the salt tank 2 is absorbed through the Venturi effect of the ejector 8, the saturated brine is diluted into strong brine after being mixed with the tap water, the strong brine enters the resin tank 3, and the strong brine is in contact with the ion exchange resin 5 in the resin tank 3 for regeneration.

In the backwash mode, only tap water enters the resin tank 3 after the brine in the brine tank 2 is sucked up, and the residual brine is washed away.

In the back flush mode, tap water flows through the water inlet a to the water outlet 7 of the resin tank, enters the resin tank 3, and flows from the water inlet 6 of the resin tank to the water outlet c. The back flushing mode can comprise back flushing before regeneration and back flushing after regeneration, the back flushing before regeneration is used for loosening the compressed ion exchange resin 5 during normal operation, the efficiency of the contact between the brine and the ion exchange resin 5 during regeneration is improved, the back flushing after regeneration can clean the residual brine, the difference between the back flushing mode and the back flushing mode is that the water quantity is larger, and the flow required by the back flushing is larger.

In the normal flushing mode, tap water flows into the resin tank water inlet 6 through the water inlet a, enters the resin tank 3, flows into the water outlet c from the resin tank water outlet 7, is generally flushed after regeneration, and flushes the regenerated residual brine.

Referring to fig. 2, a schematic diagram of a water path of a water softener in a salt absorbing (regenerating) mode in the prior art is shown. During regeneration, tap water is used as power, the saturated brine dissolved in the salt tank 2 is sucked out through the venturi effect of the ejector 8, and the brine is mixed with the tap water to generate strong brine which enters the resin tank 3 for regeneration. The whole regenerated power adopts running water pressure, and when the running water pressure changes, the regeneration performance has great deviation, so that the stability of the regeneration performance is poor. And the ejector structure is adopted for regeneration, and various parameters during regeneration cannot be controlled and adjusted in real time due to the physical structural characteristics of the ejector 8: such as brine concentration at regeneration, regeneration flow rate, etc.; in addition, when the water softener needs very small regeneration flow rate, the ejector 8 has the problems of large production difficulty and difficult size control because of the undersize physical small holes, and the performance lower limit is too high and the cost is also high. In order to solve the problems, the application provides a novel water softener waterway system and a novel water softener.

The application provides a waterway system of water softener.

Referring to fig. 3, in an embodiment of the present application, the water path system of the water softener includes a salt tank 11, a resin tank 12, a salt suction channel 13, a first water inlet channel 14, a confluence channel 15, a water pump 16 and a flow restrictor 17. Wherein the water inlet end of the salt absorbing channel 13 is communicated with the salt tank 11, and the water outlet end of the salt absorbing channel 13 is converged with the water outlet end of the first water inlet channel 14 and communicated with the resin tank 12 through the converging channel 15; the water pump 16 is arranged in the salt absorbing channel 13, and the water pump 16 is used for pumping out the liquid in the salt tank 11 and flowing along the salt absorbing channel 13; the flow restrictor 17 is disposed in the first water inlet channel 14, and the flow restrictor 17 is used for restricting the flow rate of the liquid conveyed by the first water inlet channel 14.

Specifically, salt particles 32 (e.g., sodium chloride) are contained in the salt tank 11, and an ion exchange resin 33 is contained in the resin tank 12. The salt particles 32 in the salt tank 11 may be dissolved in advance by a procedure such as water injection or salt dissolution to form saturated brine or strong brine. In the regeneration mode, the water pump 16 is started, saturated brine or concentrated brine in the salt tank 11 is pumped out by taking the water pump 16 as power and is conveyed towards the confluence channel 15 through the salt suction channel 13, meanwhile, tap water is conveyed to the confluence channel 15 through the first water inlet channel 14 through the water inlet A, the tap water and the brine are mixed in the confluence channel 15 to form a regeneration liquid, the regeneration liquid is conveyed to the resin tank 12 through the confluence channel 15, and the regeneration liquid is contacted with the ion exchange resin 33 in the resin tank 12, so that the ion exchange resin 33 regenerates and recovers performance. When the water pump 16 is turned off, tap water can also enter the resin tank 12 through the first water inlet passage 14 and the confluence passage 15 to perform a backwashing (slow washing) function.

According to the technical scheme, the water pump 16 is arranged in the salt suction channel 13, the salt water in the salt tank 11 is pumped out by taking the water pump 16 as power, and when the rotating speed of the water pump 16 is fixed, the flow speed of the liquid in the salt suction channel 13 is kept stable; the first water inlet channel 14 is provided with the flow limiting piece 17, and the flow of the liquid in the first water inlet channel 14 is limited by the flow limiting piece 17, so that the flow of the liquid output by the water outlet end of the first flow limiting piece 17 is kept stable and cannot be influenced by the water pressure of tap water at the water inlet A; in this way, the concentration and the flow rate of the regenerated liquid formed after the brine conveyed by the brine suction channel 13 and the tap water conveyed by the first water inlet channel 14 are mixed are kept stable, the regenerated liquid is not affected by the change of tap water pressure, and therefore the stability of the regeneration performance can be improved.

In order to achieve an adjustable regeneration fluid concentration to meet different usage requirements, in one embodiment, the water pump 16 is an adjustable speed water pump 16. Specifically, the regenerated liquid refers to the brine formed by mixing the brine conveyed by the brine sucking channel 13 with the tap water conveyed by the first water inlet channel 14. Regeneration liquid concentration= (brine concentration of brine tank 11. Water supply flow of water pump 16)/(tap water flow after passing through restrictor 17 + water supply flow of water pump 16). Because the brine concentration in the brine tank 11 is kept constant (generally, saturated brine concentration), the tap water flow rate after passing through the flow limiting piece 17 is kept constant, the water pump 16 is an adjustable speed water pump 16 with self-priming and speed regulating functions, and when the rotating speed of the water pump 16 is regulated, the water supply flow rate of the water pump 16 can be regulated, so that the concentration regulation of the regenerated liquid is realized. In addition, the flow rate of the water pump 16 is adjustable, so that the flow rate of the regeneration liquid is adjustable, and the regeneration effect is adjustable. Through the regulation of the regeneration effect, the salt consumption, namely the salt adding and the regeneration frequency, can be controlled, and the size of the salt box 11 can be further determined to be different in product form, so that different requirements are met. Wherein, the regeneration effect refers to the salt effect and the regeneration degree which can be achieved by adopting different salt consumption.

Salt consumption= (salt amount g used in this regeneration)/packed resin volume L;

salt efficiency= (water quantity L when the hardness of the regenerated water reaches a set value is equal to the raw water hardness mg/L)/salt quantity g used for the regeneration;

regeneration degree= (water quantity when the hardness of the regenerated water reaches a set value, i.e. the hardness of raw water, i.e. mg/L)/theoretical total adsorption amount of filling resin, i.e. mg;

there are many types of adjustable speed water pumps 16, as long as the self-priming and speed regulating functions are achieved. In one embodiment, the water pump 16 is any one of a diaphragm pump, a vane pump, and a plunger pump.

In order to realize intelligent control of the water softener's waterway system, in one embodiment, the waterway system of the water softener includes a softening waterway, a water injection waterway, a salt dissolving waterway, a backflushing waterway, a regeneration waterway, a backflushing waterway and a control device, wherein the control device is used for controlling the waterway system of the water softener to switch among waterways.

Specifically, the softening waterway is used to deliver raw water to the resin tank 12 for softening, so as to provide softened water to a user. The water injection waterway may be used to inject a certain amount of water into the brine tank 11. The salt dissolving waterway can be used for pumping out the salt water in the salt tank 11 and then refluxing the salt water into the salt tank 11 so as to realize circulating dynamic salt dissolving. The back flush waterway can flush and loosen the ion exchange resin 33 in the resin tank 12 before regeneration, and can flush and clean the residual brine in the resin tank 12 after regeneration. The regeneration water path can be used for pumping out the brine in the brine tank 11 and delivering the brine to the resin tank 12 for ion exchange regeneration. The backwash waterway can be used to flush out the residual brine in the resin tank 12. The control device is internally provided with a preset program, and when the control device is in actual application, the control device judges what mode the water softener needs to enter according to the preset program, and then the waterway system of the water softener is switched to a waterway under a corresponding mode, and the whole process automatically operates, so that the operating efficiency and reliability of the water softener can be effectively improved. For example, in the water injection mode, a certain amount of water is injected into the brine tank 11 through the water injection waterway, and when the amount of water injected into the brine tank 11 reaches a preset value, the water injection is judged to be completed, and at this time, the control device controls the waterway system of the water softener to be switched from the water injection waterway to the brine dissolving waterway, so that the brine dissolving mode is entered.

The water inlet a of the first water inlet channel 14 is usually connected with a tap water pipe, and the tap water pressure at the water inlet a is large, so that the water flow rate in the first water inlet channel 14 is large, and a certain requirement is also placed on the flow rate of the regeneration liquid in the regeneration mode, so that the flow is required to be limited by the flow limiting piece 17. In one embodiment, the restrictor 17 has a restrictor orifice through which the flow of liquid can be restricted as it passes, it being understood that the restrictor orifice is typically a restrictor orifice having a smaller diameter. Wherein, the aperture size of the restriction orifice is fixed or the aperture size of the restriction orifice is adjustable. When the aperture size of the restriction orifice is fixed, the liquid flow after passing through the restriction orifice is kept stable. When the aperture size of the flow limiting hole is adjustable, the tap water flow after passing through the flow limiting piece 17 is adjustable by adjusting the aperture size of the flow limiting hole, so that the concentration of the regenerated liquid, the flow rate of the regenerated liquid and the regeneration effect are adjustable.

In one embodiment, the salt absorbing passage 13 is provided with a one-way valve 18, the one-way valve 18 is located on the water outlet side of the water pump 16, and the one-way valve 18 is used for limiting the backflow of the liquid towards the water pump 16. The check valve 18 can prevent the solution in the resin tank 12 from entering the water pump 16 after passing through the confluence channel 15 and the salt absorbing channel 13 and then flowing back into the salt tank 11, so as to ensure the operation reliability of the whole waterway system.

In one embodiment, the waterway system of the water softener further includes a first control valve 19 provided to the first water inlet channel 14, and the first control valve 19 is used to open or close the first water inlet channel 14. The first control valve 19 may be a solenoid valve, an electric ball valve, a mechanical ball valve, a ceramic valve, or the like, as long as the water path can be turned on and off. The regeneration modes specifically include a first regeneration mode and a second regeneration mode, wherein in the first regeneration mode, the first control valve 19 is opened, the first water inlet channel 14 is in a conducting state, the water pump 16 pumps the brine in the salt tank 11 to the salt suction channel 13, and then the brine is mixed with tap water output by the first water inlet channel 14 to form a regeneration liquid, and the regeneration liquid is conveyed to the resin tank 12 for regeneration through the confluence channel 15; in the second regeneration mode, the first control valve 19 is closed, the first water inlet passage 14 is shut off, and the water pump 16 pumps out brine in the brine tank 11 and feeds the brine to the resin tank 12 via the brine suction passage 13 and the confluence passage 15 for regeneration.

Optionally, the confluence channel 15 may be further provided with a flow meter and/or a salinity meter, by which the flow rate of the liquid passing through the confluence channel 15 may be detected, and by which the concentration of the liquid salt passing through the confluence channel 15 may be detected, so that in the regeneration mode, the flow rate and/or the concentration of the regenerated liquid passing through the confluence channel 15 can be monitored in real time.

Typically, a certain amount of solid salt particles 32 are stored in the salt tank 11, and a certain amount of water needs to be injected into the salt tank 11 before the regeneration mode to dissolve the salt particles 32 in the salt tank 11 to form brine. In order to be able to switch freely between the water filling mode and the regeneration mode, in one embodiment, the waterway system of the water softener further comprises a water filling channel 20 and a second control valve 21 provided to the water filling channel 20, the water filling channel 20 communicates the first water inlet channel 14 with the salt tank 11, and the second control valve 21 is used for opening or closing the water filling channel 20. Specifically, in the water injection mode, the first control valve 19 and the second control valve 21 are both opened, and at this time, the first water inlet passage 14 and the water injection passage 20 are communicated, and tap water is injected into the salt tank 11 through the first water inlet passage 14 and the water injection passage 20, so that salt particles 32 in the salt tank 11 can be dissolved to form brine. In the regeneration mode, the second control valve 21 is closed, the water injection passage 20 is blocked, and the water pump 16 is turned on to pump out the brine in the brine tank 11.

In order to be able to quickly inject a certain amount of water into the salt tank 11 in the water injection mode, optionally the junction of the water injection channel 20 with the first water inlet channel 14 is located between the upstream of the restriction 17 and the downstream of the first control valve 19. When both the first control valve 19 and the second control valve 21 are opened, the tap water in the first water inlet channel 14 can directly flow into the water injection channel 20 without passing through the flow limiting member 17, and at this time, the water flow is large, so that the water injection efficiency can be improved. In the regeneration mode or the backwash mode, the second control valve 21 is closed, and tap water in the first water intake passage 14 is output to the confluence passage 15 through the restrictor 17.

In addition, the conventional water softener is generally static salt dissolution, and when the salt tank 11 is filled with water, the salt particles 32 are soaked and dissolved for a long time to form saturated brine, and the salt dissolution time is long. In order to increase the salt dissolution rate, in one embodiment, the waterway system of the water softener further includes a connection passage 22 and a third control valve 23 provided to the connection passage 22, the connection passage 22 communicates the first water inlet passage 14 with the confluence passage 15, a junction point of the connection passage 22 and the first water inlet passage 14 is located between an upstream of the restriction 17 and a downstream of the first control valve 19, and the third control valve 23 is used to open or close the connection passage 22.

Specifically, as shown in fig. 6, after water injection is completed, the water pump 16 is turned on, the second control valve 21 and the third control valve 23 are both opened, the water outlet of the salt tank 11, the salt suction channel 13, the confluence channel 15, the connection channel 22, the first water inlet channel 14, the water injection channel 20 and the water inlet a of the salt tank 11 are sequentially communicated to form a circulation loop, and the brine in the salt tank 11 can flow along the circulation loop, so that circulating dynamic salt dissolution can be realized, the brine in the salt tank 11 can quickly reach a preset concentration, and the salt dissolution efficiency can be effectively improved. In the back flush mode, the water passage is switched to allow the first water inlet passage 14, the connection passage 22, the confluence passage 15, and the resin tank 12 to communicate with each other, so that tap water is introduced into the resin tank 12 to flush the ion resin.

In addition, as shown in fig. 1, after water injection is completed, the salt particles 4 in the salt tank 2 are dissolved to form brine with a certain concentration through long-time soaking, but because the salt particles 4 exist in the salt tank 2, the salt particles 4 are continuously dissolved in the soaking process, and the concentration stability of the brine can be ensured only after the brine in the salt tank 2 reaches the saturated concentration or the salt particles 4 in the salt tank 2 are completely dissolved. In general, the regeneration process does not require saturated brine, so that brine with stable concentration can be obtained and salt consumption can be reduced. Referring to fig. 12 and 13, in one embodiment, the waterway system of the water softener further includes a liquid storage container 24, a first conveying channel 25, a second conveying channel 26 and a switch valve, the salt absorbing channel 13 communicates the salt tank 11 with the liquid storage container 24, the first conveying channel 25 communicates the liquid storage container 24 with the salt tank 11, the second conveying channel 26 communicates the liquid storage container 24 with the salt absorbing channel 13, a junction point of the second conveying channel 26 and the salt absorbing channel 13 is located at a water inlet side of the water pump 16, and the switch valve is used for controlling on-off states of the first conveying channel 25 and the second conveying channel 26.

Specifically, the first conveying channel 25 and the second conveying channel 26 may be turned on and off by an on-off valve, where the on-off valve may include two control valves respectively provided in the first conveying channel 25 and the second conveying channel 26, or the on-off valve may also be a two-position three-way valve. After water injection is completed, the water pump 16 is started to enter a salt dissolving mode, in the salt dissolving mode, the first conveying channel 25 is in a conducting state, the second conveying channel 26 is in a blocking state, salt water in the salt tank 11 enters the liquid storage container 24 through the salt absorbing channel 13, and then flows back to the salt tank 11 through the first conveying channel 25, so that circulating dynamic salt dissolving is realized. When the brine in the salt tank 11 reaches the preset concentration, the brine in the salt tank 11 is pumped out to the liquid storage container 24 by the water pump 16 for storage, so that the brine concentration in the liquid storage container 24 can be ensured to be the preset concentration and kept stable, and the preset concentration can be less than or equal to the saturated salt concentration. In the regeneration mode, the first conveying channel 25 is in a blocking state, the second conveying channel 26 is in a conducting state, the water pump 16 is started, brine with preset concentration in the liquid storage container 24 is pumped out and conveyed to the resin tank 12 through the second conveying channel 26 and the salt absorbing channel 13, and the brine is contacted with the ion exchange resin 33 in the resin tank 12 to realize regeneration. With this arrangement, the step of mixing with tap water supplied from the first water inlet passage 14 can be omitted.

In the regeneration mode, the backflushing mode and the backflushing mode, the liquid contacted with the ion exchange resin 33 of the resin tank 12 is required to be discharged, in order to realize smooth water discharge, the resin tank 12 is provided with a first port 121 and a second port 122, the waterway system of the water softener further comprises a water discharge channel 27 and a fourth control valve 28 arranged on the water discharge channel 27, the water discharge channel 27 is communicated with the first port 121, the confluence channel 15 is communicated with the second port 122, and the fourth control valve 28 is used for opening or closing the water discharge channel 27. Specifically, when drainage is required in the regeneration mode, the backwash mode, and the backwash mode, the fourth control valve 28 is opened and the drain passage 27 is in a conductive state, and the liquid in the resin tank 12 can enter the drain passage 27 via the second port 122 and be discharged from the drain passage 27 to the drain port C.

In the above-described embodiment, the first control valve 19, the second control valve 21, the third control valve 23, and the fourth control valve 28 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. By controlling the on-off states of the water pump 16, the first control valve 19, the second control valve 21, the third control valve 23, and the fourth control valve 28, the waterway system of the water softener can be switched between a plurality of modes.

As shown in fig. 5, the water path system of the water softener has a water filling mode, in which the first control valve 19 and the second control valve 21 are both in an open state, the third control valve 23, the fourth control valve 28 and the water pump 16 are all in a closed state, and the first water inlet channel 14, the water filling channel 20 and the salt tank 11 are sequentially communicated to form a water filling path.

Specifically, in the water filling mode, the water pump 16 is turned off, the first control valve 19 and the second control valve 21 are both opened, and the third control valve 23 and the fourth control valve 28 are both closed. Tap water enters the first water inlet channel 14 through the water inlet A, is conveyed to the water injection channel 20 through the main body channel of the first water inlet channel 14, and is injected into the salt tank 11 through the water injection channel 20 so as to be mixed with salt particles 32 in the salt tank 11.

As shown in fig. 6, the water path system of the water softener has a salt dissolving mode, in which the second control valve 21, the third control valve 23 and the water pump 16 are all in an open state, the first control valve 19 and the fourth control valve 28 are all in a closed state, and the salt tank 11, the salt suction channel 13, the confluence channel 15, the connection channel 22, the first water inlet channel 14, the water injection channel 20 and the salt tank 11 are sequentially connected to form a circulating salt dissolving water path.

Specifically, in the salt dissolving mode, the water pump 16 pumps out the salt water in the salt tank 11, and then conveys the salt water into the salt tank 11 through the salt suction channel 13, the confluence channel 15, the connection channel 22, the first water inlet channel 14 and the water injection channel 20; the method is circulated and reciprocated in this way, so as to realize dynamic salt dissolution. Compared with the traditional static soaking salt dissolving method, the salt dissolving method has the advantages that the salt dissolving method can dissolve the salt to a saturated state through dynamic circulating flowing 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.

As shown in fig. 7, the waterway system of the water softener has a back flush mode in which the first control valve 19, the third control valve 23, and the fourth control valve 28 are all opened, the second control valve 21, and the water pump 16 are all closed, and the first water inlet passage 14, the connection passage 22, the confluence passage 15, the resin tank 12, and the drain passage 27 are sequentially communicated to form a back flush waterway.

Specifically, in the recoil mode, tap water enters the first water inlet channel 14 through the water inlet a, is sent to the connection channel 22 through the first water inlet channel 14, enters the resin tank 12 through the connection channel 22, the confluence channel 15 and the second port 122, and is finally output to the water outlet C through the first port 121 and the water outlet channel 27 for discharge. Among them, the backflushing mode may include a pre-regeneration backflushing and a post-regeneration backflushing. The pre-regeneration back flushing is used for flushing and loosening the compressed ion exchange resin 33 in normal operation, so that the efficiency of the contact between the brine and the ion exchange resin 33 in the regeneration process is improved, and the residual brine can be flushed completely by the back flushing after the regeneration.

As shown in fig. 8, the water path system of the water softener has a regeneration mode in which the first control valve 19, the fourth control valve 28, and the water pump 16 are all in an open state, the second control valve 21 and the third control valve 23 are all in a closed state, and the salt tank 11, the salt suction passage 13, the first water inlet passage 14, the confluence passage 15, the resin tank 12, and the water discharge passage 27 are sequentially connected to form a regeneration water path.

Specifically, in the regeneration mode, the water pump 16 pumps out brine in the brine tank 11 and conveys the brine to the confluence passage 15 through the brine suction passage 13, tap water is conveyed to the confluence passage 15 through the water inlet a and the first water inlet passage 14, regenerated liquid formed by mixing the brine and the tap water is conveyed to the resin tank 12 through the confluence passage 15, the regenerated liquid is contacted with the ion exchange resin 33 in the resin tank 12 for regeneration, and the regenerated waste water is conveyed to the water outlet C through the water outlet passage 27. In the regeneration mode, the first control valve 19 may be closed, and the brine in the salt tank 11 may be directly drawn out to the resin tank 12 for regeneration without mixing with tap water.

As shown in fig. 9, the water path system of the water softener has a backwash mode, in which the first control valve 19 and the fourth control valve 28 are both in an open state, the second control valve 21, the third control valve 23 and the water pump 16 are all in a closed state, and the first water inlet channel 14, the confluence channel 15, the resin tank 12 and the drain channel 27 are sequentially connected to form a backwash water path.

Specifically, in the backwash mode, tap water is supplied to the confluence passage 15 through the water inlet a and the first water inlet passage 14, supplied to the resin tank 12 through the confluence passage 15, and finally supplied to the water outlet C through the water outlet passage 27 to clean the brine remaining after the regeneration.

In one embodiment, the waterway system of the water softener further includes a second water inlet channel 29 and a water outlet channel 30, the second water inlet channel 29 is communicated with the first port 121, and the water outlet channel 30 is communicated with the second port 122.

The waterway system of the water softener is provided with a normal operation mode, and in the normal operation mode, the water pump, the first control valve, the second control valve, the third control valve and the fourth control valve are all in a closed state, and the second water inlet channel, the resin tank and the water outlet channel are sequentially communicated to form a softened waterway. In the normal operation mode, tap water (raw water) enters the resin tank 12 through the second water inlet channel 29 and the first port 121, the raw water contacts with the ion exchange resin 33 in the resin tank 12, calcium and magnesium ions in the raw water are adsorbed by the ion exchange resin 33 to obtain softened water, and the softened water is conveyed to the water outlet B for a user through the second port 122 and the water outlet channel 30, wherein the water outlet B can be used for connecting a faucet or other water using equipment.

In addition, in some situations where the water quality is not required, the user does not need to use softened water, and in order to provide raw water that is not softened for the user more conveniently, in one embodiment, the waterway system of the water softener further includes a bypass channel 31, and the bypass channel 31 communicates the second water inlet channel 29 with the water outlet channel 30. In this way, the raw water supplied from the second water inlet passage 29 enters the water outlet passage 30 through the bypass passage 31, and is supplied to the user water port B through the water outlet passage 30.

Specifically, as shown in fig. 10, in the normal operation mode, the water inlet a, the second water inlet passage 29, the resin tank 12, the water outlet passage 30, and the water outlet B are communicated to form a softened water passage; as shown in fig. 11, in the direct water supply mode, the water inlet a, the second water inlet passage 29, the bypass passage 31, the water outlet passage 30, and the water outlet B are communicated to form a direct water supply waterway. The waterway system of the water softener may include a switching valve (not shown) provided at the bypass passage 31, and switching between the softened waterway and the direct water supply waterway is accomplished by the switching valve.

Referring to fig. 14 to 18, the present application further provides a control method of the water system of the water softener.

Referring to fig. 14, in a first embodiment, the water path system of the water softener has a normal operation mode, a water injection mode, a salt dissolving mode and a regeneration mode, and the control method of the water path system of the water softener comprises the following steps:

the on-off states of the water pump 16, the first control valve 19, the second control valve 21, the third control valve 23 and the fourth control valve 28 are controlled so that the waterway system of the water softener is switched among the normal operation mode, the water injection mode, the salt dissolving mode and the regeneration mode.

Specifically, in the normal operation mode, tap water is supplied to the resin tank 12, softened water is obtained by adsorbing calcium and magnesium ions in the tap water by the ion exchange resin 33 in the resin tank 12, and the softened water is supplied to the water gap for a user to supply the softened water to the user. When the ion exchange resin 33 adsorbs calcium and magnesium ions to a certain extent, the ion exchange resin 33 cannot achieve the softening function or the softening function cannot achieve the preset effect, and then the ion exchange resin 33 needs to be regenerated. Before regeneration, the salt tank 11 needs to be filled with water by switching to a water filling mode; when the water quantity in the salt tank 11 reaches a preset value, switching to a salt dissolving mode, and carrying out circulation dynamic salt dissolving through the salt dissolving mode so as to dissolve salt particles in the salt tank 11 to a preset concentration (for example, saturated salt water concentration); then, the regeneration mode is switched to draw out the brine in the brine tank 11 to the resin tank 12 to regenerate the ion exchange resin 33. It will be appreciated that in some embodiments, to achieve a better regeneration, the water circuit of the water softener may also include a backflush mode, which is switched to after the salt dissolving mode is completed, and through which the ion exchange resin 33 in the resin tank 12 is flushed loose and then switched to the regeneration mode. In addition, in some embodiments, the waterway system of the water softener may further include a backwash mode, and after the regeneration mode is completed, the backwash mode may be switched to, by which the residual brine in the resin tank 12 may be washed clean, to ensure that no residual brine remains in the softened water discharged through the resin tank 12 in the normal operation mode. In addition, in practical application, the waterway system of the water softener can be switched to any mode according to practical requirements, and the water softener is not required to be switched according to a certain sequence. For example, after the water injection mode is completed, salt dissolution can be performed by a static soaking mode, and then the regeneration mode is directly switched to the regeneration mode, so that the salt dissolution mode does not need to be switched first.

Referring to fig. 15, in the second embodiment, switching is performed sequentially in the order of the water injection mode, the salt dissolution mode, and the regeneration mode;

switching to the water injection mode comprises the following steps:

the first control valve 19 and the second control valve 21 are opened, and the third control valve 23, the fourth control valve 28 and the water pump 16 are closed, so that the first water inlet channel 14, the water injection channel 20 and the salt tank 11 are sequentially communicated to form a water injection waterway;

switching to the salt dissolving mode comprises the following steps:

the second control valve 21, the third control valve 23 and the water pump 16 are all opened, and the first control valve 19 and the fourth control valve 28 are all closed, so that the salt tank 11, the salt suction channel 13, the confluence channel 15, the connecting channel 22, the first water inlet channel 14, the water injection channel 20 and the salt tank 11 are sequentially communicated to form a circulating salt dissolving waterway;

switching to the regeneration mode comprises the steps of:

the first control valve 19, the fourth control valve 28 and the water pump 16 are opened, and the second control valve 21 and the third control valve 23 are closed, so that the salt tank 11, the salt suction passage 13, the first water inlet passage 14, the confluence passage 15, the resin tank 12 and the water discharge passage 27 are sequentially communicated to form a regeneration waterway.

Specifically, the first control valve 19 and the second control valve 21 are opened, the third control valve 23, the fourth control valve 28 and the water pump 16 are closed, and the water injection mode is switched to the water injection mode, and water is injected into the salt tank 11 through the water injection waterway; when the water quantity in the salt tank 11 reaches a preset value, the second control valve 21, the third control valve 23 and the water pump 16 are all opened, the first control valve 19 and the fourth control valve 28 are all closed, the salt dissolving mode is switched to, and the circulating dynamic salt dissolving is carried out through the circulating salt dissolving water path so as to dissolve salt particles in the salt tank 11 to a preset concentration (for example, saturated salt water concentration); then, the first control valve 19, the fourth control valve 28 and the water pump 16 are opened, and the second control valve 21 and the third control valve 23 are closed, and the regeneration mode is switched to so as to draw out the brine in the salt tank 11 into the resin tank 12, thereby realizing the regeneration of the ion exchange resin 33.

Referring to fig. 16, in a third embodiment, the water system of the water softener further includes a back flushing mode, and the control method of the water system of the water softener further includes switching to the back flushing mode after the salt dissolving mode is completed and before entering the regeneration mode;

switching to the recoil mode includes the steps of:

The first control valve 19, the third control valve 23 and the fourth control valve 28 are opened, the second control valve 21 and the water pump 16 are closed, and the first water inlet channel 14, the connecting channel 22, the confluence channel 15, the resin tank 12 and the water discharge channel 27 are sequentially communicated to form a backflushing waterway.

Specifically, after the water injection mode is completed, the first control valve 19, the third control valve 23 and the fourth control valve 28 are opened, the second control valve 21 and the water pump 16 are closed, the back flushing mode is switched to, the high-speed water flow is conveyed into the resin tank 12 through the back flushing waterway and then discharged, and the ion exchange resin 33 in the resin tank 12 can be flushed and loosened, so that the subsequent ion exchange efficiency is higher, and the regeneration efficiency is improved.

Referring to fig. 17, in a fourth embodiment, the water system of the water softener further includes a backwash mode, and the control method of the water system of the water softener further includes switching to the backwash mode after the regeneration mode is completed;

switching to the backwash mode includes the steps of:

the first control valve 19 and the fourth control valve 28 are opened, the second control valve 21, the third control valve 23 and the water pump 16 are closed, and the first water inlet channel 14, the confluence channel 15, the resin tank 12 and the water discharge channel 27 are sequentially communicated to form a backwash waterway.

Specifically, after the regeneration mode is completed, the first control valve 19 and the fourth control valve 28 are opened, the second control valve 21, the third control valve 23 and the water pump 16 are closed, and the operation is switched to the backwash mode, so that the tap water is fed into the resin tank 12 through the backwash waterway and discharged, and the brine remaining in the regeneration process can be washed clean.

Referring to fig. 18, in the fifth embodiment, the water path system of the water softener is sequentially switched in the order of the water injection mode, the salt dissolving mode, the backflushing mode, the regeneration mode and the backflushing mode.

the water pump 16, the first control valve 19, the second control valve 21, the third control valve 23, and the fourth control valve 28 are all closed so that the second water inlet passage 29, the resin tank 12, and the water outlet passage 30 are sequentially connected to form a softened water passage.

Specifically, the water pump 16, the first control valve 19, the second control valve 21, the third control valve 23, and the fourth control valve 28 are all closed, and at this time, the normal operation mode is switched to, tap water is fed into the resin tank 12 through the softening waterway to be softened, and softened water is output through the water outlet passage 30.

It should be noted that the foregoing describes specific embodiments of the present invention. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims can be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

The application also provides a water softener, and this water softener includes the waterway system of water softener, and this water softener's waterway system's specific structure 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 described in detail.

Several modes of operation of the water softener of the present application are described in detail below in connection with one specific embodiment. Referring to fig. 3, in one embodiment, the waterway system of the water softener includes a salt tank 11, a resin tank 12, a salt absorbing passage 13, a first water inlet passage 14, a confluence passage 15, a water injection passage 20, a connection passage 22, a water discharge passage 27, a second water inlet passage 29, a water outlet passage 30, and a bypass passage 31. Wherein the salt tank 11 is used for storing salt particles 32, the resin tank 12 is used for storing ion exchange resin 33, the resin tank 12 is provided with a first port 121 and a second port 122, the first port 121 can be a water inlet of the resin tank 12, and the second port 122 can be a water outlet of the resin tank 12. The water inlet end of the salt absorbing channel 13 is communicated with the water outlet of the salt tank 11, the water outlet end of the salt absorbing channel 13 is converged with the water outlet end of the first water inlet channel 14 and is communicated with the second port 122 of the resin tank 12 through the converging channel 15, and the salt absorbing channel 13 is provided with a water pump 16 and a one-way valve 18 positioned on the output side of the water pump 16. The first water inlet channel 14 is provided with a restriction 17 and a first control valve 19. The water inlet end of the water injection channel 20 is communicated with the first water inlet channel 14, the water outlet end of the water injection channel 20 is communicated with the water inlet of the salt tank 11, and the water injection channel 20 is provided with a second control valve 21. The connection passage 22 communicates the first water intake passage 14 with the confluence passage 15, and the connection passage 22 is provided with a third control valve 23. The drain passage 27 communicates with the first port 121 of the resin tank 12, and the drain passage 27 is provided with a fourth control valve 28. The second water inlet passage 29 communicates with the first port 121 of the resin tank 12, and the water outlet passage 30 communicates with the second port 122 of the resin tank 12. The bypass passage 31 communicates the second water intake passage 29 with the water outlet passage 30.

The working process of the water softener generally comprises the following procedures, wherein the water softener is in a normal operation mode so as to provide softened water for users; after running to a certain water quantity, the water softener enters a water injection mode to inject water into the salt tank 11; after water injection for a period of time, the water pump 16 is started to enter a dynamic salt dissolving mode so as to dissolve salt particles 32 to reach a preset concentration (for example, saturated brine concentration); after the salt dissolution is completed, the ion exchange resin 33 in the resin tank 12 is flushed and loosened by entering a back flushing mode; after the back flushing is finished, the ion resin enters a regeneration mode to convey the regenerated liquid to the resin tank 12 so as to realize the regeneration of the ion resin; after the brine is sucked up or reaches a set regeneration time, the system enters a backwash mode (also called a slow-wash mode) to clean the regeneration liquid remaining in the resin tank 12.

It should be noted that, in the normal operation mode, when the water softener is operated to a certain water volume, the water softener generally refers to an operation water volume preset in a product by a manufacturer, for example, when the manufacturer tests and operates 500L of the water softener under a certain test hardness, the removal rate of the hardness is greater than 90%, the set operation water volume is 500L, and if the hardness of raw water changes, the setting of the operable water volume (operation water volume=test hardness, test water volume/actual hardness) is reduced or increased proportionally by presetting the hardness value of the raw water in advance, and the water volume can be monitored by setting a flowmeter at the tail end of the water outlet.

The water softener can switch among various functional modes by controlling the operation states of the water pump 16, the first control valve 19, the second control valve 21, the third control valve 23 and the fourth control valve 28 through the control system.

As shown in fig. 4, in the normal operation mode, the water pump 16 is turned off, and the first control valve 19, the second control valve 21, the third control valve 23, and the fourth control valve 28 are all closed. Tap water enters the second water inlet channel 29 through the water inlet A, enters the resin tank 12 through the second water inlet channel 29 and the first port 121, contacts the ion exchange resin 33 in the resin tank 12 to form softened water, and the softened water is conveyed to the water outlet B for a user through the second port 122 and the water outlet channel 30 so as to provide the softened water for the user.

As shown in fig. 5, in the water filling mode, the water pump 16 is turned off, the first control valve 19 and the second control valve 21 are both opened, and the third control valve 23 and the fourth control valve 28 are both closed. Tap water enters the first water inlet channel 14 through the water inlet A, is conveyed to the water injection channel 20 through the main body channel of the first water inlet channel 14, and is injected into the salt tank 11 through the water injection channel 20 so as to be mixed with salt particles 32 in the salt tank 11.

As shown in fig. 6, in the salt dissolving mode, the water pump 16 is turned on, both the second control valve 21 and the third control valve 23 are turned on, and both the first control valve 19 and the fourth control valve 28 are turned off. The water pump 16 pumps out the salt water in the salt tank 11, and then conveys the salt water into the salt tank 11 through the salt suction channel 13, the confluence channel 15, the connecting channel 22, the first water inlet channel 14 and the water injection channel 20; the method is circulated and reciprocated in this way, so as to realize dynamic salt dissolution.

As shown in fig. 7, in the recoil mode, the water pump 16 is turned off, the first control valve 19, the third control valve 23, and the fourth control valve 28 are all opened, and the second control valve 21 is closed. Tap water enters the first water inlet channel 14 through the water inlet A, is sent to the connecting channel 22 through the first water inlet channel 14, enters the resin tank 12 through the connecting channel 22, the confluence channel 15 and the second port 122, and is finally output to the water outlet C through the first port 121 and the water outlet channel 27 for discharge. Among them, the backflushing mode may include a pre-regeneration backflushing and a post-regeneration backflushing.

As shown in fig. 8, in the regeneration mode, the water pump 16 is turned on, the first control valve 19 and the fourth control valve 28 are both opened, and the second control valve 21 and the third control valve 23 are both closed. The water pump 16 pumps out brine in the brine tank 11 and conveys the brine to the confluence channel 15 through the brine suction channel 13, tap water is conveyed to the confluence channel 15 through the water inlet A and the first water inlet channel 14, regenerated liquid formed by mixing the brine and the tap water is conveyed to the resin tank 12 through the confluence channel 15, the regenerated liquid is contacted with ion exchange resin 33 in the resin tank 12 for regeneration, and the regenerated waste water is conveyed to the water outlet C through the water outlet channel 27. In the regeneration mode, the first control valve 19 may be closed, and the brine in the salt tank 11 may be directly drawn out to the resin tank 12 for regeneration without mixing with tap water.

As shown in fig. 9, in the backwash mode, the water pump 16 is turned off, the first control valve 19 and the fourth control valve 28 are both opened, and the second control valve 21 and the third control valve 23 are both closed. Tap water is conveyed to the confluence channel 15 through the water inlet A and the first water inlet channel 14, is conveyed to the resin tank 12 through the confluence channel 15, and is finally conveyed to the water outlet C through the water outlet channel 27 so as to clean the regenerated residual brine.

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

Claims

1. A waterway system of a water softener, comprising:

a salt box;

a resin tank;

2. The waterway system of water softener of claim 1, wherein the water pump is an adjustable speed water pump.

3. The water course system of a water softener of claim 1 comprising a softening water course, a filling water course, a salt dissolving water course, a backflushing water course, a regeneration water course, a backflushing water course and a control means for controlling the water course system of the water softener to switch between water courses.

4. The waterway system of the water softener of claim 1, wherein the restriction has a restriction hole through which the liquid passes, and a size of the restriction hole is fixed or adjustable.

5. The waterway system of water softener of claim 1, wherein the salt absorbing passage is provided with a check valve at a water outlet side of the water pump, the check valve being for restricting a backflow of the liquid toward the water pump.

6. The waterway system of water softener of claim 1, further comprising a first control valve provided to the first water inlet passage, the first control valve for opening or closing the first water inlet passage.

7. The waterway system of water softener of claim 6, further comprising a water injection passage communicating the first water inlet passage with the salt tank and a second control valve provided to the water injection passage for opening or closing the water injection passage.

8. The waterway system of water softener of claim 7, further comprising a connecting channel connecting the first water inlet channel with the confluence channel, and a third control valve provided to the connecting channel, a junction of the connecting channel and the first water inlet channel being located between an upstream of the restriction and a downstream of the first control valve, the third control valve for opening or closing the connecting channel.

9. The waterway system of water softener of claim 1, further comprising a liquid storage container, a first delivery channel, a second delivery channel and a switch valve, wherein the salt absorbing channel communicates the salt tank with the liquid storage container, the first delivery channel communicates the liquid storage container with the salt tank, the second delivery channel communicates the liquid storage container with the salt absorbing channel, a junction point of the second delivery channel and the salt absorbing channel is located at a water inlet side of the water pump, and the switch valve is used for controlling on-off states of the first delivery channel and the second delivery channel.

10. The waterway system of water softener according to any one of claims 1 to 9, wherein the resin tank has a first port and a second port, the waterway system of water softener further comprises a drain passage communicating with the first port and a fourth control valve provided to the drain passage, the confluence passage communicating with the second port, the fourth control valve being for opening or closing the drain passage.

11. The water chiller waterway system of claim 10, wherein the water chiller waterway system has a water injection mode in which the first control valve and the second control valve are both in an open state, the third control valve, the fourth control valve and the water pump are all in a closed state, and the first water inlet channel, the water injection channel and the salt tank are sequentially connected to form a water injection waterway.

12. The water circuit of claim 10, wherein the water circuit of the water softener has a salt dissolving mode, and wherein in the salt dissolving mode, the second control valve, the third control valve and the water pump are all in an open state, and the first control valve and the fourth control valve are all in a closed state, and the salt tank, the salt suction channel, the confluence channel, the connection channel, the first water inlet channel, the water injection channel and the salt tank are sequentially communicated to form a circulating salt dissolving water circuit.

13. The water course system of a water softener of claim 10 wherein the water course system of the water softener has a backflushing mode in which the first control valve, the third control valve and the fourth control valve are all in an open state, the second control valve and the water pump are all in a closed state, and the first water inlet channel, the connection channel, the confluence channel, the resin tank and the drainage channel are sequentially communicated to form a backflushing water course.

14. The water course system of a water softener of claim 10 wherein the water course system of the water softener has a regeneration mode in which the first control valve, the fourth control valve and the water pump are all in an open state, the second control valve and the third control valve are all in a closed state, and the salt tank, the salt suction passage, the first water inlet passage, the confluence passage, the resin tank and the water discharge passage are sequentially communicated to form a regeneration water course.

15. The water course system of a water softener of claim 10 wherein the water course system of the water softener has a backwash mode in which both the first control valve and the fourth control valve are in an open state and the second control valve, the third control valve and the water pump are in a closed state, the first water inlet channel, the confluence channel, the resin tank and the drain channel being sequentially connected to form a backwash waterway.

16. The waterway system of water softener of claim 10, further comprising a second inlet channel in communication with the first port and a outlet channel in communication with the second port.

17. The water chiller waterway system of claim 16, wherein the water chiller has a normal operating mode in which the water pump, the first control valve, the second control valve, the third control valve, and the fourth control valve are all in a closed state, and the second water inlet passage, the resin tank, and the water outlet passage are sequentially connected to form a softened water circuit.

18. The waterway system of water softener of claim 16, further comprising a bypass passage that communicates the second inlet passage with the outlet passage.

19. A control method of a water course system of a water softener, for the water course system of the water softener according to claim 16, wherein the water course system of the water softener has a normal operation mode, a water injection mode, a salt dissolving mode and a regeneration mode, the control method of the water course system of the water softener comprising the steps of:

20. The control method of waterway system of water softener of claim 19, wherein the switching is sequentially performed in order of water injection mode, salt dissolving mode and regeneration mode;

switching to the water injection mode comprises the following steps:

switching to the salt dissolving mode comprises the following steps:

Switching to the regeneration mode comprises the steps of:

21. The method of controlling a waterway system of a water softener according to claim 20, wherein the waterway system of the water softener further comprises a backflushing mode, the method of controlling a waterway system of the water softener further comprising switching to the backflushing mode after the salt dissolving mode is completed before entering the regeneration mode;

switching to the recoil mode includes the steps of:

22. The method of controlling a waterway system of a water softener according to claim 20, wherein the waterway system of the water softener further comprises a backwash mode, the method of controlling a waterway system of the water softener further comprising switching to the backwash mode after the regeneration mode is completed;

Switching to the backwash mode includes the steps of:

23. The control method of the waterway system of a water softener according to any one of claims 19 to 22, wherein switching the waterway system of the water softener to the normal operation mode comprises the steps of:

24. A water softener comprising the water softener of any one of claims 1 to 18.