CN117819679A

CN117819679A - Water treatment system, control method thereof and water treatment equipment

Info

Publication number: CN117819679A
Application number: CN202211204228.3A
Authority: CN
Inventors: 刘兴国; 范汇武; 姚菲菲; 杜永涛; 刘通; 王德馨
Original assignee: Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2024-04-05

Abstract

The invention provides a water treatment system, a control method thereof and water treatment equipment. The water treatment system comprises: the water delivery pipeline is provided with a water inlet end and a water outlet end, and the water outlet end is used for being communicated with the domestic water system; the electrodialysis module is provided with a water inlet, a water outlet and at least two acid-base water chambers, the water inlet is communicated with the water inlet, the water outlet comprises a first outlet and a second outlet, the first outlet is used for flowing out acid water, and the second outlet is used for flowing out alkaline water; and the resin module is communicated with the first outlet and the water outlet end, and comprises a mounting shell and a hydrogen type resin, wherein the hydrogen type resin is arranged in the mounting shell and used for softening water. According to the water treatment system provided by the invention, the electrodialysis module is utilized to treat water to obtain the acidic water and the alkaline water, and the resin module is utilized to remove part of calcium and magnesium ions in the acidic water, so that the acidic water is further softened, and finally the softened acidic water is obtained, so that the use of a user in daily life is facilitated.

Description

Water treatment system, control method thereof and water treatment equipment

Technical Field

The invention relates to the technical field of water treatment, in particular to a water treatment system, a control method thereof and water treatment equipment.

Background

In the related art, the conventional acid-base water machine on the market generally adopts a mode of electrolyzing tap water by an electrode plate to generate acid water or alkaline water, but the acid water generated by the mode of electrolyzing tap water generally has residual chlorine such as hypochlorous acid, and the substance can play a role of sterilization, but can irritate the skin of a human body, so that the skin is easy to generate side effects of itching and redness, and the acid water generated by electrolysis belongs to hard water, can generate impurities such as scale and the like, and is unfavorable for users, so the acid water generated by electrolyzing tap water is not suitable for directly washing the face and bathing.

Disclosure of Invention

The invention provides a water treatment system, a control method thereof and water treatment equipment, which are used for solving the defects in the prior art and realizing the following technical effects: the electrodialysis module is utilized to treat water to obtain acidic water and alkaline water, and the resin module is utilized to remove part of calcium and magnesium ions in the acidic water, so that the acidic water is further softened, and finally the softened acidic water is obtained, thereby being convenient for users to use in daily life.

An embodiment of a water treatment system according to the first aspect of the present invention includes:

The water delivery pipeline is provided with a water inlet end and a water outlet end, and the water outlet end is used for being communicated with a domestic water system;

the electrodialysis module is provided with a water inlet, a water outlet and at least two acid-base water chambers, wherein the water inlet is communicated with the water inlet, the water outlet comprises a first outlet and a second outlet, the first outlet is used for flowing out acid water, and the second outlet is used for flowing out alkaline water; at least one acid-base water chamber is used for generating acid water, and at least another acid-base water chamber is used for generating alkaline water;

the resin module is communicated with the first outlet and the water outlet end, and comprises a mounting shell and a hydrogen type resin, wherein the hydrogen type resin is mounted in the mounting shell and used for softening water.

According to the water treatment system provided by the embodiment of the invention, the electrodialysis module is utilized to treat water to obtain the acidic water and the alkaline water, and the resin module is utilized to remove part of calcium and magnesium ions in the acidic water, so that the acidic water is further softened, and finally the softened acidic water is obtained, and is convenient for users to use in daily life.

In addition, the alkaline water generated by the electrodialysis module can also be used as domestic water for users, wherein the alkaline water has the effects of removing oil and pesticide residues, can replace the traditional household detergent to remove greasy dirt, and can be used in the processes of cooking vegetables, steaming rice and the like.

According to one embodiment of the invention, a first valve is arranged at the second outlet;

the resin module is provided with a first water outlet and a second water outlet, the first water outlet is communicated with the water outlet end and is used for discharging softened acid water, the second water outlet is used for discharging waste water, and a second valve is arranged at the second water outlet.

According to one embodiment of the present invention, the water treatment system further comprises:

and the water passing pipeline is connected with the electrodialysis module in parallel and is communicated to the water inlet of the resin module.

According to one embodiment of the invention, the water passing pipeline is provided with a third valve with an adjustable opening, and the third valve is used for adjusting the opening of the third valve so as to adjust the pH value of the acid-base water flowing out of the resin module.

According to one embodiment of the invention, a three-way valve is arranged upstream of the electrodialysis module;

two outlets of the three-way valve are respectively communicated with the water inlet end of the water passing pipeline and the electrodialysis module; the three-way valve is used for adjusting the flow ratio of the two outlets of the three-way valve so as to adjust the pH value of the acid-base water flowing out of the resin module.

According to one embodiment of the invention, the resin module is connected in parallel with an adjusting pipeline, an adjusting valve is arranged on the adjusting pipeline or at the water inlet or the water outlet of the adjusting pipeline, and the adjusting valve is used for adjusting the opening degree of the adjusting valve to adjust the pH value of the acid-base water flowing out from the water outlet end.

and the common water pipeline is connected in parallel with the electrodialysis module and the two sides of the resin module.

the heating module is connected in series on the water conveying pipeline, is positioned at the upstream of the electrodialysis module or at the downstream of the resin module, and is used for heating water in the water conveying pipeline.

the temperature adjusting pipeline is connected with the heating module in parallel, a fourth valve with adjustable opening is arranged on the temperature adjusting pipeline or at the water inlet or the water outlet of the temperature adjusting pipeline, and the fourth valve is used for adjusting the opening of the fourth valve to adjust the water temperature of water flowing out from the water outlet end.

According to one embodiment of the invention, at least one of a temperature sensor, a flow meter and a pH meter is provided downstream of the heating module;

And/or a TDS detection device is arranged at the upstream of the electrodialysis module.

According to a second aspect of the present invention, there is provided a control method for a water treatment system according to the first aspect, comprising:

obtaining a target effluent pH value of acidic water required by a user;

and determining that the pH value of the target effluent is in a first pH value range, controlling the electrodialysis module to be powered off, and controlling water flow to flow through the resin module and discharge water from the water outlet end.

According to one embodiment of the present invention, the control method of the water treatment system further comprises: determining that the pH value of the target effluent is in a second pH value range, controlling the electrodialysis module to be electrified, and controlling water flow to flow through the electrodialysis module and the resin module and to discharge water from the water outlet end;

wherein the minimum value of the first pH value range is larger than or equal to the maximum value of the second pH value range.

According to one embodiment of the present invention, the control method of the water treatment system further comprises:

and controlling the electrodialysis module to be electrified according to the water passing quantity flowing through the resin module reaching the set water passing quantity, and controlling the acidic water generated by the electrodialysis module to flow through the resin module so as to regenerate the resin module.

According to one embodiment of the invention, after the step of determining that the target effluent pH is within a first pH range, controlling the electrodialysis module to be powered off and controlling water flow through the resin module and out of the effluent side, the control method of the water treatment system further comprises:

acquiring a first effluent pH value of water flow at the water outlet end;

and determining that the pH value of the first effluent is larger than the pH value of the set effluent, controlling the electrodialysis module to be electrified, and controlling the acidic water generated by the electrodialysis module to flow through the resin module so as to regenerate the resin module.

and acquiring a first signal that the resin module is being regenerated and normal water is needed by a user, and controlling the water flow of the water inlet end to flow to the water outlet end through a common water pipeline so as to realize water outlet.

According to one embodiment of the invention, after the step of determining that the target effluent pH is in the second pH range, controlling the electrodialysis module to be energized and controlling the water flow through the electrodialysis module and the resin module and out of the effluent side, the control method of the water treatment system further comprises:

Acquiring a second effluent pH value of the water flow at the water outlet end;

and adjusting the opening of a three-way valve or a third valve to adjust the water flow of the water passing pipeline based on the target water outlet pH value and the second water outlet pH value until the second water outlet pH value reaches the target water outlet pH value.

According to one embodiment of the present invention, in the step of controlling the water flow through the resin module and out of the water outlet end, the method specifically includes:

acquiring a third effluent pH value of the water flow at the water outlet end;

and adjusting the opening of an adjusting valve to adjust the water flow of the adjusting pipeline based on the target water outlet pH value and the third water outlet pH value until the third water outlet pH value reaches the target water outlet pH value.

acquiring a target water outlet temperature required by a user and a current water outlet temperature at the water outlet end;

and adjusting the opening of a fourth valve based on the target water outlet temperature and the current water outlet temperature to adjust the water flow of the temperature adjusting pipeline until the current water outlet temperature reaches the target water outlet temperature.

According to a third aspect of the invention, a water treatment device comprises the water treatment system described in the first aspect of the invention, wherein the water treatment device is an acidic water device, a soft water device or a water heater.

Drawings

In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a water treatment system according to the present invention;

FIG. 2 is a schematic view of a water treatment system with water pipes according to the present invention;

FIG. 3 is a schematic diagram of a water treatment system with water pipes according to a second embodiment of the present invention;

FIG. 4 is a schematic view of a water treatment system provided with a water conduit and a regeneration valve according to the present invention;

FIG. 5 is a schematic view of a water treatment system provided with a heating module according to an embodiment of the present invention;

FIG. 6 is a schematic view of a water treatment system provided with a heating module and a water conduit according to one embodiment of the present invention;

FIG. 7 is a schematic view of a water treatment system provided with a heating module, a water conduit and a regeneration valve according to one embodiment of the present invention;

FIG. 8 is a schematic view of a water treatment system provided with a heating module, a water passing pipe, a regeneration valve and a tempering pipe according to an embodiment of the present invention;

FIG. 9 is a schematic view of a water treatment system provided with a heating module, a water passing pipe, a regeneration valve and a normal water pipe according to an embodiment of the present invention;

FIG. 10 is a schematic view of a water treatment system provided with a heating module, a water passing pipe, a regeneration valve, a common water pipe and a temperature regulating pipe according to an embodiment of the present invention;

FIG. 11 is a schematic view of a water treatment system with a heating module, water conduit and regeneration valve according to another embodiment of the present invention;

FIG. 12 is a schematic view showing a structure of a water treatment system provided with a heating module, a water passing pipe and a general water pipe according to another embodiment of the present invention;

FIG. 13 is a schematic view of a water treatment system with a heating module, a water passing pipe, a regeneration valve, a common water pipe, and a tempering pipe according to another embodiment of the present invention;

FIG. 14 is a schematic view of a water treatment system provided with a water conduit, a regulating conduit and a regulating valve according to the present invention;

FIG. 15 is a schematic view of a water treatment system with a common water conduit and without a heating module according to the present invention;

FIG. 16 is a flow chart of a control method of a water treatment system according to the present invention.

Reference numerals:

1. a water pipe; 11. a water inlet end; 12. a water outlet end;

13. a flow rate detector; 14. a three-way valve;

2. an electrodialysis module; 21. a first outlet; 22. a second outlet; 23. a first valve;

3. a resin module; 31. a first drain port; 32. a second drain port; 33. a second valve; 34. a regeneration valve; 4. a heating module;

51. a water passing pipe; 511. a third valve; 52. a common water pipe; 53. a temperature regulating pipeline; 531. a fourth valve; 54. a four-way valve; 6. adjusting the pipeline; 61. and adjusting the valve.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The water treatment system and the control method thereof according to the present invention will be described with reference to the accompanying drawings.

As shown in fig. 1 to 15, the water treatment system according to the embodiment of the first aspect of the present invention includes a water pipe 1, an electrodialysis module 2, and a resin module 3.

The water delivery pipeline 1 is provided with a water inlet end 11 and a water outlet end 12, and the water outlet end 12 is used for being communicated with a domestic water system. The electrodialysis module 2 has a water inlet, a water outlet and at least two acid-base water chambers, the water inlet 11 being in communication with the water inlet, the water outlet comprising a first outlet 21 and a second outlet 22, the first outlet 21 being for letting out acid water and the second outlet 22 being for letting out alkaline water. Wherein at least one acid-base water chamber is used for generating acid water, and at least another acid-base water chamber is used for generating alkaline water.

The resin module 3 communicates with the first outlet 21 and the water outlet 12, respectively, and the resin module 3 includes a mounting housing and a hydrogen type resin mounted in the mounting housing for softening water.

According to the water treatment system provided by the embodiment of the invention, the electrodialysis module 2 is utilized to treat water to obtain acidic water and alkaline water, and the resin module 3 is utilized to remove part of calcium and magnesium ions in the acidic water, so that the acidic water is further softened, and finally softened acidic water is obtained, and convenience is brought to users in daily life.

In addition, the alkaline water generated by the electrodialysis module 2 can also be used as domestic water for users, wherein the alkaline water has the effects of removing oil and pesticide residues, can replace the traditional household detergent to remove greasy dirt, and can be used in the processes of cooking vegetables, steaming rice and the like.

The water treatment system provided by the invention can solve the technical defects in the related art, specifically, as shown in fig. 1, the water treatment system of the invention utilizes the electrodialysis module 21 to treat water and further softens acidic water through the resin module 3, so that, on one hand, acid water generated by electrodialysis generally does not contain residual chlorine such as hypochlorous acid, and on the other hand, the acidic water can be softened after passing through the resin module 3, therefore, the acid water generated by the water treatment system of the invention can be directly applied to cleaning human skin, namely, a user can directly utilize the acidic water flowing out of the water outlet end 12 of the water treatment system to perform cleaning processes such as face washing, bath and the like, and because the surface of the human skin is acidic, the softened slightly acidic water can bring more comfortable feeling to the human body, so that the skin is smoother and tender and the hair is more glossy when the human body is cleaned.

The following describes the operation of the water treatment system according to an embodiment of the present invention.

As shown in fig. 1, the core waterway of the water treatment system mainly includes a resin module 3, an electrodialysis module 2, and a water delivery channel. The water inlet end 11 positioned upstream of the electrodialysis module 2 can be filled with tap water or water purified by a pre-filter element, and the main purpose of the water inlet end is to provide a water source required by electrodialysis treatment.

The electrodialysis module 2 is mainly used for generating acid water and alkaline water, and the structure of the electrodialysis module 2 mainly comprises an electrode, an ion exchange membrane, a chamber structure and the like, wherein the electrode can flow out acid water and alkaline water in the chamber after being electrified. Wherein the ion exchange membrane necessarily contains bipolar membranes, and the number of the bipolar membranes is not less than two. The ion exchange membrane can select the following structure according to the user's needs in the actual application process: an anion exchange membrane, a cation exchange membrane, or an anion exchange membrane + a cation exchange membrane. The electrodialysis chamber of the electrodialysis module 2 at least comprises two acid-base water chambers capable of respectively generating acid water or alkaline water, and one or more of a pure water chamber, a polar chamber and a concentrated water chamber can be added in the electrodialysis chamber according to requirements.

The main purpose of the resin module 3 is to achieve ion exchange and thus micro-acidification and softening of water, wherein the resin module 3 must be filled with hydrogen type resin, and optionally with other types of resin. For example, the hydrogen-type resin can exchange the hydrogen ions carried by the resin with other cations (such as calcium ions and magnesium ions) in the water, so that the hydrogen ions carry the exchanged cations in the water, and the hydrogen ions enter the water, so that the water flowing through the ion-exchange resin is acidic, and meanwhile, the water is softened because the hydrogen-type resin removes part of the calcium and magnesium ions in the water.

In summary, it is known that the electrodialysis module 2 can electrodialysis to produce acidic water and alkaline water, and the resin module 3 can not only soften water, but also slightly acidify water, that is, the water treatment system provided by the invention can produce acidic water not only through the electrodialysis module 2, but also through the resin module 3 and soften acidic water, but it is noted that the acidity of acidic water produced only through the resin module 3 is generally smaller than that of acidic water produced only through the electrodialysis module 2.

For example, if the user needs to use acidic water with larger acidity, the system controls the electrodialysis module 2 to be electrified, water flows through the electrodialysis module 2 and the resin module 3 in sequence, and the water outlet end 12 flows out of softened acidic water with larger acidity; if the user needs to use the acidic water with smaller acidity, the system controls the electrodialysis module 2 to cut off, the water flow passes through the resin module 3 to be subjected to micro-acidification and softening treatment, and the water outlet end 12 flows out of the slightly acidic softened water with smaller acidity.

It should also be noted that the total amount of ion exchange resin that can be ion exchanged is certain for a particular volume or mass, and when the total amount of ion exchange is reached, the ion exchange resin needs to be regenerated, wherein the hydrogen form resin typically requires a certain amount of strong acid to regenerate. Therefore, the resin module 3 used in the present system also needs to be regenerated after reaching the total ion exchange amount.

Specifically, the regeneration process of the resin module 3 is as follows: the electrodialysis module 2 is electrified and generates strong acid, the system guides the strong acid generated by the electrodialysis module 2 into the resin module 3 through the first outlet 21, and hydrogen ions in the strong acid are subjected to ion exchange with cations adsorbed on the hydrogen type resin, so that the hydrogen type resin carries the hydrogen ions again, and the regeneration process of the resin module 3 is completed. Wherein, after the regeneration of the resin module 3 is completed, the system can use neutral water to wash the strong acid residue in the resin module 3 so as to be convenient for the next normal use.

As shown in fig. 4, in one embodiment, a regeneration valve 34 may be disposed at the first drain port 31 of the resin module 3, and a flow detector 13 is disposed downstream of the regeneration valve 34, and when the resin module 3 is regenerated, the system closes the regeneration valve 34 to ensure that the regeneration process is performed smoothly, and at this time, the system may detect whether the regeneration valve 34 leaks through the flow detector 13.

According to one embodiment of the invention, since the water flowing from the electrodialysis module 2 to the resin module 3 is acid water, after a long period of operation, the alkali chamber of the electrodialysis module 2 will be dirty and precipitated (and also at the cathode), the system can reverse the electrodialysis module 2, and at this time, the second outlet 22 flows out acid water, and the first outlet 21 flows out alkaline water. In this way, the previous alkaline compartment becomes an acid compartment to remove scale build-up inside the same, and the system then flushes the electrodialysis module 2 with neutral water, allowing thorough cleaning of the scale.

As shown in fig. 1 to 4, a first valve 23 is provided at the second outlet 22 according to an embodiment of the present invention. The resin module 3 has a first drain port 31 and a second drain port 32, the first drain port 31 being connected to the water outlet end 12 and used for discharging softened acidic water, the second drain port 32 being used for discharging waste water, and a second valve 33 being provided at the second drain port 32.

In this way, the water flow at the water inlet end 11 generates acidic water and alkaline water through the electrodialysis module 2, the alkaline water is discharged through the second outlet 22, the acidic water flows into the resin module 3 through the first outlet 21, the softened acidic water is discharged to the water outlet end 12 through the first water outlet 31, and the wastewater is discharged through the second water outlet 32. Wherein the system can control whether alkaline water is discharged or not by controlling the opening and closing of the first valve 23, and the system can control whether waste water in the resin module 3 is discharged or not by controlling the second valve 33.

As shown in fig. 4, the water treatment system further includes a water conduit 51, according to one embodiment of the present invention. The water passing pipe 51 is connected in parallel with the electrodialysis module 2 and is communicated to the water inlet of the resin module 3.

In this embodiment, when the user needs to soften water with a weak acid having a small acidity, the electrodialysis module 2 is turned off (not energized), and tap water flows in from the water inlet end 11 and into the resin module 3 via the water pipe 51, the resin module 3 performs a weak acidification treatment and a softening treatment on the water, and the weak acid softened water realizes water outflow through the water outlet end 12. In the water outlet process, tap water does not pass through the electrodialysis module 2 or a small part of tap water passes through the electrodialysis module 2, and at the moment, the blocking effect of the electrodialysis module 2 on the water flow process is reduced, so that the adverse effect of the electrodialysis module 2 on the water flow is weakened or even eliminated, and the slightly acid softened water can flow to the water outlet end 12 smoothly for a user.

It will be appreciated that if the water conduit 51 is not present in the system, all of the tap water will flow from the electrodialysis module 2 into the resin module 3, and that the electrodialysis module 2 will instead provide an impediment to the flow of water without the need for acidic water of greater acidity. If water conduit 51 is present in the system, water flow may flow from water conduit 51, which is less resistant to flow, to resin module 3.

According to the water treatment system provided by the embodiment of the invention, when the electrodialysis module 2 is powered off, the water at the water inlet end 11 flows through the resin module 3 to obtain the weak acid water, and the weak acid water has smaller acidity and can generally meet the requirements of washing the face and bathing of a user, so that the system generally does not need to adjust the pH value of the weak acid water. However, as shown in fig. 14, if the user also has a requirement of adjusting the pH value of the weak acid water, the system may connect an adjusting pipe 6 in parallel to two sides of the resin module 3, and an adjusting valve 61 with an adjustable opening is disposed on the adjusting pipe, at this time, the system may adjust the pH value of the weak acid water at the water outlet end 12 by controlling the flow ratio between the water flow flowing through the resin module 3 and the water flow flowing through the adjusting pipe 6, specifically, the system may adjust the water flow in the adjusting pipe 6 by adjusting the opening of the adjusting valve 61, so as to adjust the pH value of the weak acid water at the water outlet end 12.

When the electrodialysis module 2 is electrified, water passes through the electrodialysis module 2 for electrodialysis and passes through the resin module 3 for softening, and the water outlet end 12 flows out of acidic water with high acidity. In the case of an electrodialysis module 2 being energized, the water treatment system according to the invention can achieve an adjustment of the pH value of the effluent stream exiting from the outlet 12 in the following way: firstly, the system adjusts the voltage and/or current of the electrodialysis module 2 to obtain effluent water flow with a specific pH value; secondly, the system finally realizes the adjustment of the pH value of the effluent water flow through the mixing of the common water in the water passing pipeline 51 and the acidic water in the electrodialysis module 2.

Taking the mixing of the normal water in the water passing pipeline 51 and the acidic water in the electrodialysis module 2 to adjust the pH value as an example, the system can control the pH value (namely the pH value) of the water outlet flow flowing out from the water outlet end 12 by controlling the ratio between the water flow in the water passing pipeline 51 and the water flow in the electrodialysis module 2, so that the water outlet flow reaches the requirement required by a user. Specifically, the adjustment of the ratio of the water flow on the two branches can be realized through the opening adjustment of a valve, and two different structures are introduced below to realize the adjustment of the pH value of the water flow.

As shown in fig. 2, in one embodiment of the present invention, the water pipe 51 is provided with a third valve 511 with an adjustable opening, and the third valve 511 is used for adjusting the opening of the third valve to adjust the pH value of the acidic water flowing out from the water outlet end 12.

In this embodiment, the third valve 511 is disposed on the water passing pipe 51, and the system can adjust the flow rate of the water flowing through the water passing pipe 51 by changing the opening of the third valve 511, so as to change the flow rate ratio between the water flowing through the water passing pipe 51 and the water flowing through the electrodialysis module 2, and further change the ratio of the acidic water in the whole water outlet flow.

Therefore, in this embodiment, the adjustment of the pH value of the effluent flowing out from the water outlet 12 can be achieved by adjusting the opening of the third valve 511, so that the system can adjust the opening of the third valve 511 according to the user's requirement until the pH value of the effluent reaches the user's target requirement.

In another embodiment of the present invention, as shown in fig. 3, the water inlet end of the water passing pipe 51 is provided with a three-way valve 14. The inlet of the three-way valve 14 is communicated with the water inlet end 11, and the two outlets of the three-way valve 14 are respectively communicated with the water inlet end of the water passing pipeline 51 and the electrodialysis module 2. The three-way valve 14 is used for adjusting the flow ratio of the two outlets of the three-way valve to adjust the pH value of the acidic water flowing out from the water outlet end 12.

Thus, in this embodiment, the system can change the flow ratio between the water flows out of the two outlets by changing the opening of the two outlets of the three-way valve 14, and thus change the pH value of the water flow.

Of course, the implementation structure of adjusting the pH value of the effluent water flow by using the opening of the valve is not limited to the above two embodiments, for example, the water inlet of the electrodialysis module 2 is also provided with an opening-adjustable valve, and the system adjusts the pH value of the effluent water flow by adjusting the opening of the valve. The invention does not limit the realization structure provided with the valve with adjustable opening, as long as the system can adjust the pH value of the effluent water flow by adjusting the opening of the valve.

As shown in fig. 5 to 13, the water treatment system further includes a heating module 4 according to an embodiment of the present invention, the heating module 4 is connected in series to the water pipe 1, the heating module 4 is located upstream or downstream of the resin module 3, and the heating module 4 is used to heat water in the water pipe 1. In this way, the system can adjust the water temperature through the heating module 4, so that the user can obtain softened acidic water with proper temperature conveniently.

As shown in fig. 5 to 10, in one embodiment of the present invention, when the heating module 4 is installed downstream of the resin module 3, a water flow enters from the water inlet end 11, the acid water is obtained through the electrodialysis module 2, the acid water is softened by passing through the resin module 3, the softened acid water is heated by passing through the heating module 4, and finally the softened acid water at a specific temperature is obtained at the water outlet end 12.

In this embodiment, the acidic water flows through and washes the water flow channel inside the heating module 4, and because the acidic water has the effect of removing scale, the scale generated by the internal heating of the heating module 4 can be removed by the acidic water, thereby solving the problem of scale accumulation generated by the heating module 4 after long-time use, ensuring the heating efficiency of the heating module 4, and prolonging the service life of the heating module 4.

In another embodiment of the present invention, the heating module 4 may be installed between the electrodialysis module 2 and the resin module 3, and the water flow at the water inlet end 11 flows through the electrodialysis module 2, the heating module 4 and the resin module 3 in sequence, and finally the softened acidic water after heating is obtained at the water outlet end 12.

In this embodiment, the acidic water generated by the electrodialysis module 2 can also clean the scale in the heating module 4, so as to ensure the heating efficiency of the heating module 4 and prolong the service life of the heating module 4.

As shown in fig. 11 to 13, in a further embodiment of the present invention, the heating module 4 may be installed upstream of the electrodialysis module 2, in which case the water flow at the water inlet end 11 is first heated by the heating module 4, then the hot water sequentially flows through the electrodialysis module 2 and the resin module 3, and finally softened acidic water heated at the water outlet end 12 is obtained.

As shown in fig. 9, 10, 12 and 13, the water treatment system further includes a common water pipe 52 according to one embodiment of the present invention. The common water pipe 52 is communicated with the heating module 4, and the electrodialysis module 2 and the resin module 3 are connected in parallel with the common water pipe 52.

In this embodiment, on one hand, when the user only needs to obtain the heated normal water, the system controls the water flow of the water inlet end 11 to flow from the normal water pipe 52 to the heating module 4, and at this time, the water flow does not pass through the electrodialysis module 2 and the resin module 3, so that the resistance of the water in the flowing process is reduced, and the water flow can flow to the water outlet end 12 more smoothly.

On the other hand, when the resin module 3 is undergoing the regeneration process, the system can also realize normal water use through the normal water pipe 52, specifically, when the resin module 3 is regenerated, the system controls the regeneration valve 34 to be closed and controls the second valve 33 to be opened, at this time, the water flow entering the water end 11 is divided into two parts, one part of the water flow flows into the electrodialysis module 2 and the resin module 3 to realize the regeneration of the resin module 3, and then is discharged as waste water from the second water outlet 32, and the other part of the water flow flows to the heating module 4 through the normal water pipe 52, and hot water is obtained after the heating module 4 is heated, and the hot water flows out from the water outlet 12 for normal use by a user.

Thus, by providing the common water pipe 52, not only the resistance of the flow of water can be reduced, but also the normal water use of the user can be ensured in the regeneration process of the resin module 3.

As shown in fig. 15, in some embodiments, the common water pipe 52 may be provided in the water treatment system without the heating module 4, where the common water pipe 52 is connected in parallel to both sides of the electrodialysis module 2 and the resin module 3, and when the resin module 3 is performing the regeneration process, the system closes the regeneration valve 34, and when the user needs to use the common water, the common water may flow out of the common water pipe 52 to the water outlet 12, thereby providing the user with the common water in a normal temperature state.

As shown in fig. 9, 10, 12 and 13, in a specific embodiment, if the water passing pipe 51 and the normal water pipe 52 are simultaneously disposed in the system, the water inlet end 11 of the water passing pipe 51, the water inlet end 11 of the normal water pipe 52 and the water pipe 1 are connected to each other, the junction of the three pipes is provided with a four-way valve 54, the inlet of the four-way valve 54 is connected to the water inlet end 11 of the water pipe 1, and the three outlets of the four-way valve 54 are respectively connected to the water inlet end 11 of the water passing pipe 51, the water inlet end 11 of the normal water pipe 52 and the water pipe 1, at this time, the system can control the flow direction and flow rate of water in the three pipes by controlling the four-way valve 54.

As shown in fig. 8, 10 and 13, the water treatment system further comprises a tempering line 53 according to one embodiment of the invention. The temperature adjusting pipeline 53 is connected with the heating module 4 in parallel, the opening of the temperature adjusting pipeline 53 is provided with a fourth valve 531, and the fourth valve 531 is used for adjusting the opening of the fourth valve 531 to adjust the water temperature of water flowing out from the water outlet end 12.

In this embodiment, the system may adjust the water flow rate flowing through the temperature adjusting pipe 53 by adjusting the opening of the fourth valve 531, so as to adjust the flow rate ratio between the water flow flowing through the temperature adjusting pipe 53 and the water flow flowing through the heating module 4, that is, adjust the ratio between cold water and hot water, and further realize the temperature adjustment of the water flow.

It should be explained that the above embodiment is directed to the heating module 4 of the type such as electric heating or kitchen warmer, etc. to achieve water temperature adjustment, and for the heating module 4 of the type such as combustion heating and instant heating, the system only needs to adjust the heating power of the heating module 4, without providing an additional temperature adjusting pipeline 53.

According to one embodiment of the invention, at least one of a temperature sensor, a flow meter 13 and a pH meter is provided downstream of the heating module 4; and/or a TDS detection device is provided upstream of the electrodialysis module 2.

Thus, the flow condition and the water quality condition of the water flow in the system can be known at any time by detecting the devices such as the temperature sensor, the flow rate detector 13, the pH detector, the TDS detector and the like.

The invention also provides a control method of the water treatment system, which is realized based on the water treatment system of each embodiment of the first aspect.

As shown in fig. 16, a control method of a water treatment system according to an embodiment of the second aspect of the present invention includes:

step 100, obtaining a target effluent pH value of acidic water required by a user;

step 200, determining that the target effluent pH is within the first pH range, controlling the electrodialysis module 2 to be powered off, and controlling the water flow to flow through the resin module 3 and out of the outlet end 12.

step 300, determining that the target effluent pH value is in the second pH value range, controlling the electrodialysis module 2 to be electrified, and controlling the water flow to flow through the electrodialysis module 2 and the resin module 3 and to discharge water from the water outlet end 12.

The control method of the water treatment system according to the embodiment of the invention comprises the following control flow: firstly, obtaining a target effluent pH value of water flow at an effluent end 12, when a user needs weak acid water with smaller acidity, closing an electrodialysis module 2, and treating the water by a system only through a resin module 3 so as to obtain weak acid softened water meeting the user requirement; when the user needs acid water with larger acidity, the electrodialysis module 2 is started, water flows through the electrodialysis module 2 and the resin module 3 in sequence, and finally the water outlet end 12 flows out acid softened water meeting the user requirement.

It should be explained that the above-mentioned target effluent pH value refers to the pH value of the acid water required by the user, and the value may be a default value set by the system or a certain value preset by the user, and the present invention is not limited in particular herein. The specific values of the above-described first pH range and second pH range may be determined according to the properties such as the hydrogen ion content of the resin module 3.

According to some embodiments of the present invention, the resin module 3 may have a situation that hydrogen ions are consumed during the process of controlling the operation of the water treatment system by the controller, so the controller may determine whether the resin module 3 needs to be regenerated by determining the water quantity, the pH value, and other factors.

In one embodiment, the control method for regenerating the resin module 3 includes:

the electrodialysis module 2 is controlled to be electrified according to the water passing amount flowing through the resin module 3 reaching the set water passing amount, and the acidic water generated by the electrodialysis module 2 is controlled to flow through the resin module 3 so as to regenerate the resin module 3.

The specific value of the water running amount can be determined according to the actual situation, and in addition, in the process of regenerating the resin module 3, the controller can close the regeneration valve 34 at the first water outlet 31, so as to avoid the strong acid flowing out to the water outlet 12.

In another embodiment, after determining that the target effluent pH is within the first pH range, controlling the electrodialysis module 2 to be powered off and controlling the water flow through the resin module 3 and out of the water outlet 12, the control method for regenerating the resin module 3 comprises:

acquiring a first effluent pH value of the water flow at the water outlet end 12;

and determining that the pH value of the first effluent is larger than the pH value of the set effluent, controlling the electrodialysis module 2 to be electrified, and controlling the acidic water generated by the electrodialysis module 2 to flow through the resin module 3 so as to regenerate the resin module 3.

In this embodiment, when only the resin module 3 is discharged, the controller can determine whether the resin module 3 needs to be regenerated by detecting a change in the first discharge water pH value of the water flow. For example, when the pH of the first effluent is continuously increased to be greater than the pH of the set effluent, it is proved that the content of hydrogen ions in the resin module 3 is small, and the resin module 3 needs to be regenerated, and at this time, the system can regenerate the resin module 3 through the strong acid generated by the electrodialysis module 2.

In addition, during the regeneration of the resin module 3, the controller may close the regeneration valve 34 at the first drain port 31, thereby preventing strong acid from flowing out to the water outlet 12.

a first signal is obtained that the resin module 3 is being regenerated and normal water is required by a user, and the water flow of the water inlet end 11 is controlled to flow to the water outlet end 12 through the common water pipe 52 to realize water outlet.

In this way, during the regeneration process of the resin module 3, the system can normally supply hot water to the user, thereby improving the use experience of the user.

The control method of the water treatment system may also adjust the pH of the effluent at the outlet end 12, in accordance with one embodiment of the present invention. Specifically, after the step of determining that the target effluent pH value is in the second pH value range, controlling the electrodialysis module 2 to be energized, and controlling the water flow to flow through the electrodialysis module 2 and the resin module 3 and to exit from the water outlet 12, the control method of the water treatment system further comprises:

acquiring a second effluent pH value of the water flow at the water outlet end 12;

based on the target effluent pH value and the second effluent pH value, the opening of the three-way valve 14 or the third valve 511 is adjusted to adjust the flow rate of the water through the water pipe 51 until the second effluent pH value reaches the target effluent pH value.

Thus, by adjusting the flow ratio of the water flow in the water conduit 51 to the water flow in the electrodialysis module 2, an adjustment of the pH value of the effluent water flow can be achieved.

In one embodiment, in the case of the three-way valve 14 being provided in the system, when the second effluent pH is less than the target effluent pH, the opening of the three-way valve 14 that communicates with the outlet of the water conduit 51 is increased, and/or the opening of the three-way valve 14 that communicates with the outlet of the electrodialysis module 2 is decreased, thereby decreasing the duty cycle of the acid water in the total water volume, and further increasing the second effluent pH until the second effluent pH reaches the target effluent pH.

When the second effluent pH is greater than the target effluent pH, the opening of the outlet of the system-adjusting three-way valve 14, which is in communication with the water conduit 51, is decreased, and/or the opening of the outlet of the system-adjusting three-way valve 14, which is in communication with the electrodialysis module 2, is increased, thereby increasing the duty ratio of the acid water in the overall water volume, and further decreasing the second effluent pH until the second effluent pH reaches the target effluent pH.

In another embodiment, in the case that the third valve 511 is provided in the system, if the pH value of the second effluent is smaller than the target pH value of the effluent, the system controls the opening of the third valve 511 to increase; if the second effluent pH is greater than the target effluent pH, the system controls the opening of the third valve 511 to decrease. The principle of this embodiment is similar to that of the embodiment provided with the three-way valve 14, and the present invention will not be described here.

According to one embodiment of the present invention, in determining that the target effluent pH is within the first pH range, the electrodialysis module 2 is controlled to be powered off, and the water flow is controlled to flow through the resin module 3 and out of the water outlet 12, specifically comprising:

acquiring a third effluent pH value of the water flow at the water outlet end 12;

based on the target effluent pH value and the third effluent pH value, the opening of the adjustment valve 61 is adjusted to adjust the flow rate of the water in the adjustment pipe 6 until the third effluent pH value reaches the target effluent pH value.

Thus, in the case of power failure of the electrodialysis module 2, the system can adjust the ratio between the water flow flowing through the adjusting pipe 6 and the water flow flowing through the resin module 3 by adjusting the opening of the adjusting valve 61, thereby adjusting the pH value of the weak acid water flowing out of the resin module 3.

The control method of the water treatment system may also adjust the outlet water temperature at the outlet water end 12, according to one embodiment of the present invention. Specifically, the control method of the water treatment system further comprises the following steps:

acquiring a target water outlet temperature required by a user and a current water outlet temperature at the water outlet end 12;

based on the target outlet water temperature and the current outlet water temperature, the opening of the fourth valve 531 is adjusted to adjust the water flow rate of the temperature adjustment pipe 53 until the current outlet water temperature reaches the target outlet water temperature.

For example, if the current outlet water temperature is less than the target outlet water temperature, the opening of the fourth valve 531 is controlled by the system to decrease, and at this time, the ratio of the hot water in the total water amount is increased, so the current outlet water temperature is continuously increased until it reaches the target outlet water temperature. If the current water outlet temperature is greater than the target water outlet temperature, the opening of the fourth valve 531 is controlled to be increased by the system, and the ratio of the cold water in the whole water quantity is increased at the moment, so that the current water outlet temperature is continuously reduced until the current water outlet temperature reaches the target water outlet temperature.

According to the control method of the water treatment system of the embodiment of the invention, the water treatment system based on the method can adopt an overcurrent type or non-overcurrent type structure, and the control flow of the overcurrent type water treatment system is slightly different from the control flow of the non-overcurrent type water treatment system, and the control flow of the overcurrent type water treatment system and the non-overcurrent type water treatment system are respectively described below.

As shown in fig. 4, the control flow of the overcurrent water treatment system is as follows: when the resin module 3 is regenerated, the regeneration valve 34 is closed, and the water outlet end 12 does not discharge water. The electrodialysis module 2 is electrified, the first valve 23 and the second valve 33 are both opened, the system controls acid water generated by the electrodialysis module 2 to enter the resin module 3, the acid water is used as wastewater and finally flows out from the second water outlet 32, and the second outlet 22 of the electrodialysis module 2 flows out of alkaline water or an alkaline water mixture.

As shown in fig. 4, the control flow of the non-overflow water treatment system is as follows: the electrodialysis module 2 needs to be energized for a certain period of time to produce acid water of a certain pH value. The system firstly controls the second valve 33 to be closed, the electrodialysis module 2 is electrified, water is sealed in the electrodialysis module 2 to generate enough acid water, then the system controls the second valve 33 to be opened for a short period of time, the electrodialysis module 2 is not electrified, the acid water generated by the electrodialysis module 2 enters the resin module 3, then the system controls the second valve 33 to be closed again, and controls the first valve 23 to be closed, so that the acid water stays in the resin module 3 for a period of time to complete the regeneration of the resin module 3, after the regeneration of the resin module 3 is finished, the system controls the second valve 33 to be opened, the residual acid water in the resin module 3 is flushed by the water flow of the water inlet end 11, and then the second valve 33 is controlled to be closed.

The present invention also provides a water treatment apparatus, wherein the water treatment apparatus according to an embodiment of the third aspect of the present invention comprises a water treatment system as described in the first aspect of the present invention.

The water treatment device can be an acidic water device, a soft water device or a water heater.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water treatment system, comprising:

2. The water treatment system of claim 1, wherein the second outlet is provided with a first valve;

3. The water treatment system of claim 1, further comprising:

4. The water treatment system according to claim 3, wherein the water passing pipeline is provided with a third valve with adjustable opening, and the third valve is used for adjusting the opening of the third valve to adjust the pH value of the acid-base water flowing out of the resin module;

or a three-way valve is arranged at the upstream of the electrodialysis module; two outlets of the three-way valve are respectively communicated with the water inlet end of the water passing pipeline and the electrodialysis module; the three-way valve is used for adjusting the flow ratio of the two outlets of the three-way valve so as to adjust the pH value of the acid-base water flowing out of the resin module.

5. The water treatment system according to claim 1, wherein the resin module is connected in parallel with an adjusting pipeline, an adjusting valve is arranged on the adjusting pipeline or at a water inlet or a water outlet of the adjusting pipeline, and the adjusting valve is used for adjusting the opening degree of the adjusting valve to adjust the pH value of the acid-base water flowing out from the water outlet end.

6. The water treatment system of claim 1, further comprising:

7. The water treatment system of any one of claims 1 to 6, further comprising:

8. The water treatment system of claim 7, further comprising:

9. The water treatment system of claim 7, wherein at least one of a temperature sensor, a flow meter, and a pH meter is provided downstream of the heating module;

10. A control method based on the water treatment system according to any one of the preceding claims 1 to 9, characterized by comprising:

Obtaining a target effluent pH value of acidic water required by a user;

11. The method for controlling a water treatment system according to claim 10, further comprising:

determining that the pH value of the target effluent is in a second pH value range, controlling the electrodialysis module to be electrified, and controlling water flow to flow through the electrodialysis module and the resin module and to discharge water from the water outlet end;

12. The method for controlling a water treatment system according to claim 10, further comprising:

13. The method of claim 10, further comprising, after the step of determining that the target effluent pH is within a first pH range, controlling the electrodialysis module to be powered off and controlling water flow through the resin module and out of the effluent side:

Acquiring a first effluent pH value of water flow at the water outlet end;

14. A method of controlling a water treatment system according to claim 12 or 13, further comprising:

15. The method of claim 11, further comprising, after the step of determining that the target effluent pH is within a second pH range, controlling the electrodialysis module to be energized and controlling a flow of water through the electrodialysis module and the resin module and out of the effluent side:

acquiring a second effluent pH value of the water flow at the water outlet end;

and adjusting the opening of the three-way valve or the third valve to adjust the water flow of the water passing pipeline based on the target water outlet pH value and the second water outlet pH value until the second water outlet pH value reaches the target water outlet pH value.

16. The method of claim 10, wherein in the step of controlling the water flow through the resin module and out of the water outlet end, the method comprises:

acquiring a third effluent pH value of the water flow at the water outlet end;

17. The method for controlling a water treatment system according to claim 10, further comprising: acquiring a target water outlet temperature required by a user and a current water outlet temperature at the water outlet end;

18. A water treatment apparatus, comprising:

a water treatment system as claimed in any one of claims 1 to 9;

wherein the water treatment equipment is acid water equipment, water softening equipment or water heater.