CN217854883U

CN217854883U - Water purification system of water purification unit

Info

Publication number: CN217854883U
Application number: CN202222002139.2U
Authority: CN
Inventors: 柯映充; 孙天厚; 郑跃东
Original assignee: Foshan Midea Qinghu Water Purification Equipment Co ltd; Midea Group Co Ltd
Current assignee: Foshan Midea Qinghu Water Purification Equipment Co ltd; Midea Group Co Ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2022-11-22
Anticipated expiration: 2032-07-29

Abstract

The utility model discloses a water purification unit's water purification system, water purification system includes: the inlet of the first filtering device is selectively communicated with the water inlet, the outlet of the first filtering device is selectively communicated with the water outlet, the inlet of the second filtering device is selectively communicated with the water inlet and communicated to the outlet of the first filtering device, and the outlet of the second filtering device is communicated with the water outlet. Therefore, the first filtering device and the second filtering device are matched, the first filtering device and the second filtering device can be connected in series or in parallel, when the water purifying equipment is used in different regions, the difference of the water quality of the water purifying equipment can be reduced, the water outlet requirements of different scenes can be met, and the requirements of users on the water quality of the water can also be met.

Description

Water purification system of water purification unit

Technical Field

The utility model belongs to the technical field of water purification unit and specifically relates to a water purification unit's water purification system is related to.

Background

In the related technology, a water purification system is arranged in the water purification equipment, the water purification equipment generally has an effluent desalination rate of over 90 percent, for example, the TDS (Total di dissolved solids) of tap water in regions with good coastal water quality in south is as low as about 50mg/L due to large national water quality difference, while the general hardness of water quality in north is higher, and particularly in regions drinking underground water sources, the TDS of water quality in partial regions is as high as about 1000 mg/L. When the water purifying equipment of the same model is used in different regions, the water quality difference of the water purifying equipment is large, the water outlet requirements of different scenes cannot be met, and when the water purifying equipment of the same model is used in the regions with relatively poor water quality, the water purifying equipment cannot meet the requirements of users on the water quality of the outlet water.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a water purification unit's water purification system, when different areas used water purification unit, this water purification unit's water purification system can reduce water purification unit and go out the water quality of water difference, satisfies the play water demand of different scenes to, also can satisfy the requirement of user to play water quality of water.

According to the utility model discloses a water purification unit's water purification system, water purification unit has water inlet and delivery port, water purification system includes:

a first filtering device having an inlet in selective communication with the water inlet, an outlet in selective communication with the water outlet, and a second filtering device having an inlet in selective communication with the water inlet and to the outlet of the first filtering device, and an outlet in communication with the water outlet,

when the inlet of the first filtering device is communicated with the water inlet, the outlet of the first filtering device is communicated with the water outlet, and the inlet of the second filtering device is communicated with the water inlet, the first filtering device is connected with the second filtering device in parallel;

when the inlet of the first filtering device is communicated with the water inlet, the outlet of the first filtering device is not communicated with the water outlet, and the inlet of the second filtering device is not communicated with the water inlet, the first filtering device is connected with the second filtering device in series.

According to the utility model discloses a water purification unit's water purification system, through first filter equipment and the cooperation of second filter equipment, can realize that first filter equipment and second filter equipment establish ties or parallelly connected, when different areas use water purification unit, can reduce water purification unit and go out water quality of water difference, satisfy the play water demand of different scenes to, also can satisfy the requirement of user to play water quality of water.

In some examples of the present invention, the water purification system further comprises: a first solenoid valve, a second solenoid valve and a third solenoid valve,

the first electromagnetic valve is connected between the water inlet and the inlet of the first filtering device to control the inlet of the first filtering device to be selectively communicated with the water inlet;

the second electromagnetic valve is connected between the water inlet and the inlet of the second filtering device to control the inlet of the second filtering device to be selectively communicated with the water inlet;

the third electromagnetic valve is connected between the outlet of the first filtering device and the water outlet so as to control the outlet of the first filtering device to be selectively communicated with the water outlet.

In some examples of the present invention, the water purification system further comprises: the first check valve is connected between the second electromagnetic valve and an inlet of the second filtering device so as to conduct the second electromagnetic valve and the second filtering device in a one-way mode;

the second one-way valve is connected between the outlet of the first filtering device and the inlet of the second filtering device so as to conduct the first filtering device and the second filtering device in a one-way mode.

In some examples of the present invention, the first filtering device performs a filtering operation when the first solenoid valve and the third solenoid valve are opened and the second solenoid valve is closed; when the first electromagnetic valve and the third electromagnetic valve are closed and the second electromagnetic valve is opened, the second filtering device works; wherein, the water purification system also purifies the tap water flowing into the water inlet for one time through the first filtering device and the second filtering device alternately.

In some examples of the present invention, the water purification system further comprises: a third filtering device and a booster pump, wherein a first inlet of the third filtering device is communicated with the water inlet, the booster pump is connected between a first outlet of the third filtering device and the first electromagnetic valve and between a first outlet of the third filtering device and the second electromagnetic valve,

and a second inlet of the third filtering device is respectively communicated with an outlet of the second filtering device and the third electromagnetic valve, and a second outlet of the third filtering device is communicated to the water outlet.

the second electromagnetic valve is connected between the first electromagnetic valve and the inlet of the second filtering device, and the inlet of the second filtering device is controlled to be selectively communicated with the water inlet through the first electromagnetic valve and the second electromagnetic valve;

the third electromagnetic valve is connected between the outlet of the first filtering device and the water outlet to control the outlet of the first filtering device to be selectively communicated with the water outlet.

In some examples of the present invention, the water purification system may further include: a first one-way valve and a second one-way valve,

the first one-way valve is connected between the second electromagnetic valve and the inlet of the second filtering device so as to conduct the second electromagnetic valve and the second filtering device in a one-way mode;

In some examples of the present invention, the first filtering device performs a filtering operation when the first solenoid valve and the third solenoid valve are opened and the second solenoid valve is closed; when the first electromagnetic valve and the second electromagnetic valve are opened and the third electromagnetic valve is closed, the second filtering device works; wherein, the water purification system also purifies the tap water flowing into the water inlet for one time through the first filtering device and the second filtering device alternately.

In some examples of the present invention, the water purification system further comprises: a third filtering device and a booster pump, wherein the first electromagnetic valve is connected between the water inlet and the first inlet of the third filtering device, the booster pump is connected between the first outlet of the third filtering device and the inlet of the first filtering device, and between the first outlet of the third filtering device and the second electromagnetic valve,

In some examples of the present invention, the water purification system further comprises: the water purifying device comprises a first wastewater electromagnetic valve and a second wastewater electromagnetic valve, wherein the water purifying device is provided with a wastewater port;

the first wastewater solenoid valve is connected between the wastewater port and a first wastewater outlet of the first filtering device to control the first wastewater outlet to selectively communicate with the wastewater port;

the second waste water solenoid valve is connected between the waste water port and a second waste water outlet of the second filtering device to control the second waste water outlet to selectively communicate with the waste water port.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of a first embodiment of a water purification system according to an embodiment of the present invention;

fig. 2 is a schematic view of a second embodiment of a water purification system according to an embodiment of the present invention;

fig. 3 is a flow chart of a water purification method according to an embodiment of the present invention.

Reference numerals:

a water purification system 100;

a first filter device 10; a second filter device 20;

a first electromagnetic valve 30; a second electromagnetic valve 31; a third electromagnetic valve 32; a first check valve 33; a second check valve 34; a third check valve 35; a high-voltage switch 36; a first wastewater solenoid valve 37; a second waste water solenoid valve 38; a first TDS probe 39; a second TDS probe 391;

a third filter device 40; a booster pump 50;

a water inlet 200; a water outlet 300; a waste gate 400.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1 and 2, a water purifying system 100 of a water purifying apparatus according to an embodiment of the present invention is described, the water purifying apparatus may be a water purifying machine, but the present invention is not limited thereto, the water purifying apparatus may also be other apparatuses having a water purifying function, the water purifying system 100 is disposed in the water purifying apparatus, the water purifying apparatus has a water inlet 200 and a water outlet 300, the present application takes the water purifying apparatus as a water purifying machine as an example, the water purifying apparatus has a water purifying effect, and the water purifying apparatus takes the water purifying apparatus as an example for purifying tap water.

As shown in fig. 1 and 2, a water purification system 100 according to an embodiment of the present invention includes: a first filter device 10 and a second filter device 20. The first filtering device 10 and the second filtering device 20 can be reverse osmosis filter elements, and the first filtering device 10 and the second filtering device 20 are arranged between the water inlet 200 and the water outlet 300. The inlet of the first filtering device 10 is selectively communicated with the water inlet 200, the outlet of the first filtering device 10 is selectively communicated with the water outlet 300, the inlet of the second filtering device 20 is selectively communicated with the water inlet 200, the inlet of the second filtering device 20 is communicated with the outlet of the first filtering device 10, and the outlet of the second filtering device 20 is communicated with the water outlet 300. When the inlet of the first filtering device 10 is communicated with the water inlet 200, the outlet of the first filtering device 10 is communicated with the water outlet 300, and the inlet of the second filtering device 20 is communicated with the water inlet 200, the first filtering device 10 is connected in parallel with the second filtering device 20, and when the first filtering device 10 is connected in parallel with the second filtering device 20, the water purifying system 100 primarily purifies the tap water flowing into the water inlet 200. When the inlet of the first filtering device 10 is communicated with the water inlet 200, the outlet of the first filtering device 10 is not communicated with the water outlet 300, and the inlet of the second filtering device 20 is not communicated with the water inlet 200, the first filtering device 10 and the second filtering device 20 are connected in series, and when the first filtering device 10 and the second filtering device 20 are connected in series, the water purifying system 100 performs secondary purification on tap water flowing into the water inlet 200.

It should be noted that the water purification system 100 may include: the control valve assembly is used for controlling the first filtering device 10 and the second filtering device 20 to be connected in series or in parallel, the control valve assembly can control the first filtering device 10 and the second filtering device 20 to be flexibly switched between a series mode and a parallel mode, when the control valve assembly controls the first filtering device 10 and the second filtering device 20 to be connected in series, the water purifying system 100 carries out secondary purification on tap water flowing into the water inlet 200, the effect that the ultrapure water flows out of the water purifying system 100 is achieved, when the control valve assembly controls the first filtering device 10 and the second filtering device 20 to be connected in parallel, the water purifying system 100 carries out primary purification on the tap water flowing into the water inlet 200, and the effect that the pure water flows out of the water purifying system 100 is achieved.

It should be noted that, the water purification system of the existing water purification device only purifies the tap water once, the desalination rate is more than 90%, because of the large difference of water quality in the whole country, for example, the TDS of tap water in the regions with good water quality along the sea in south is as low as about 50mg/L, while the general hardness of water quality in north is higher, especially in the regions drinking underground water sources, the TDS of water quality in some regions is as high as about 1000mg/L, and the difference of the effluent water quality of the water purification device after using the same type of water purification device to purify water in different regions is large, for example: the water quality of the water purification equipment of the same model is different from 5mg/L to 100mg/L, and the existing water purification equipment cannot meet the requirements of some water use scenes with higher water quality requirements in the telephone of users in the areas with relatively poor tap water quality.

In the present application, by controlling the first filtering device 10 and the second filtering device 20 to freely switch between the series connection mode and the parallel connection mode, when the first filtering device 10 and the second filtering device 20 are connected in parallel, the tap water flowing into the water inlet 200 flows into the first filtering device 10 and the second filtering device 20 respectively, the tap water flowing out of the first filtering device 10 and the tap water flowing out of the second filtering device 20 become pure water and flow to the water outlet 300, the tap water is filtered only once, the water purifying system 100 purifies the tap water flowing into the water inlet 200 once, the desalination rate of the outlet water of the water purifying equipment is above 90%, and the control valve assembly controls the parallel connection mode of the first filtering device 10 and the second filtering device 20 to work in a region with good water quality. When the first filtering device 10 and the second filtering device 20 are connected in series, the tap water flowing into the water inlet 200 firstly flows into one of the first filtering device 10 and the second filtering device 20, and then the tap water after primary filtering flows into the other one of the first filtering device 10 and the second filtering device 20 for secondary filtering, which is equivalent to that the tap water is filtered twice, the tap water after the secondary filtering is changed into ultrapure water and flows to the water outlet 300, the desalination rate of the outlet water is more than 99%, and the control valve assembly controls the first filtering device 10 and the second filtering device 20 to work in a series mode in a region with poor water quality. Compared with the effluent desalinization rate of the working in the series mode of the first filtering device 10 and the second filtering device 20, the effluent desalinization rate of the working in the parallel mode of the first filtering device 10 and the second filtering device 20 is improved to 99% from 90%, the TDS range of the effluent quality of the water purifying equipment is reduced to 5mg/L-10mg/L from the range of 5mg/L-100mg/L, the effluent quality of the water purifying equipment is greatly improved, the effluent difference of different water qualities in different regions is reduced, a user can flexibly select the communication mode of the first filtering device 10 and the second filtering device 20 based on different water requirements, and the satisfaction degree of the user is improved.

From this, through the cooperation of first filter equipment 10 and second filter equipment 20, can realize that first filter equipment 10 and second filter equipment 20 establish ties or parallelly connected, when water purification unit is used in different areas, can reduce water purification unit and go out water quality of water difference, satisfy the play water demand of different scenes, can satisfy the water demand of the different water scenes of user, solve the great problem of the play water quality of water difference of water purification unit in different water quality areas, and, according to the quality of water difference in different areas, control first filter equipment 10 and second filter equipment 20 and establish ties or parallelly connected, can guarantee the purifying effect of water purification unit to the running water, can satisfy the requirement of user to play water quality of water.

According to the first embodiment of the water purification system 100 of the present invention, as shown in fig. 1, the water purification system 100 may include: first, second and

third solenoid valves

30, 31 and 32, it will also be understood that the control valve assembly may comprise first, second and

third solenoid valves

30, 31 and 32, the first solenoid valve 30 being connected between the water inlet 200 and the inlet of the first filtering device 10, the first solenoid valve 30 being able to control the inlet of the first filtering device 10 to selectively communicate with the water inlet 200, for example: when the first solenoid valve 30 is opened, the inlet of the first filtering device 10 is communicated with the water inlet 200, and when the first solenoid valve 30 is closed, the inlet of the first filtering device 10 is not communicated with the water inlet 200. The second solenoid valve 31 is connected between the water inlet 200 and the inlet of the second filtering device 20, and the second solenoid valve 31 can control the inlet of the second filtering device 20 to selectively communicate with the water inlet 200, for example: the water inlet 200 is communicated with the inlet of the second filtering device 20 when the second electromagnetic valve 31 is opened, and the water inlet 200 is not communicated with the inlet of the second filtering device 20 when the second electromagnetic valve 31 is closed. The third solenoid valve 32 is connected between the outlet of the first filtering device 10 and the water outlet 300, and the third solenoid valve 32 can control the outlet of the first filtering device 10 to selectively communicate with the water outlet 300, for example: when the third electromagnetic valve 32 is opened, the outlet of the first filtering device 10 is communicated with the water outlet 300, and when the third electromagnetic valve 32 is closed, the outlet of the first filtering device 10 is not communicated with the water outlet 300.

Further, an inlet of the first solenoid valve 30 is communicated to the water inlet 200, an outlet of the first solenoid valve 30 is communicated with an inlet of the first filtering device 10, an inlet of the second solenoid valve 31 is communicated to the water inlet 200, an outlet of the second solenoid valve 31 is communicated with an inlet of the second filtering device 20, an inlet of the third solenoid valve 32 is communicated with an outlet of the first filtering device 10, an outlet of the third solenoid valve 32 and an outlet of the second filtering device 20 are respectively communicated to the water outlet 300, and an outlet of the first filtering device 10 is communicated to an inlet of the second filtering device 20. Further, an inlet of the first solenoid valve 30 is communicated with the water inlet 200 through a pipeline, an outlet of the first solenoid valve 30 is communicated with an inlet of the first filtering device 10 through a pipeline, an inlet of the second solenoid valve 31 is communicated with the water inlet 200 through a pipeline, an outlet of the second solenoid valve 31 is communicated with an inlet of the second filtering device 20 through a pipeline, an inlet of the third solenoid valve 32 is communicated with an outlet of the first filtering device 10 through a pipeline, an outlet of the third solenoid valve 32 and an outlet of the second filtering device 20 are both communicated with the water outlet 300 through a pipeline, and an outlet of the first filtering device 10 is communicated with an inlet of the second filtering device 20 through a pipeline.

Wherein the first filtering device 10 is connected in parallel with the second filtering device 20 when the first solenoid valve 30, the second solenoid valve 31 and the third solenoid valve 32 are all open. When the first solenoid valve 30 is open and the second solenoid valve 31 and the third solenoid valve 32 are both closed, the first filtering device 10 is connected in series with the second filtering device 20. As shown in fig. 1, when the first electromagnetic valve 30, the second electromagnetic valve 31, and the third electromagnetic valve 32 are all opened, after the tap water flows into the water purification system 100 from the water inlet 200, a part of the tap water flows into the first filtering device 10 through the first electromagnetic valve 30, the tap water filtered by the first filtering device 10 becomes pure water, and flows to the water outlet 300 through the third electromagnetic valve 32, another part of the tap water flows into the second filtering device 20 through the second electromagnetic valve 31, and the tap water filtered by the second filtering device 20 becomes pure water, and flows to the water outlet 300 through the outlet of the second filtering device 20. When the first electromagnetic valve 30 is opened and the second electromagnetic valve 31 and the third electromagnetic valve 32 are both closed, after the tap water flows into the water purification system 100 from the water inlet 200, the tap water flows into the first filtering device 10 through the first electromagnetic valve 30, the tap water filtered by the first filtering device 10 becomes pure water and flows into the second filtering device 20, and the pure water filtered by the second filtering device 20 becomes ultrapure water and flows to the water outlet 300 through the outlet of the second filtering device 20. Through setting up first solenoid valve 30, second solenoid valve 31 and third solenoid valve 32, can realize freely switching first filter equipment 10 and second filter equipment 20 series connection or parallelly connected technological effect, can guarantee water purification system 100 working property to guarantee water purification unit's working property.

Further, as shown in fig. 1, the water purification system 100 may further include: a first check valve 33 and a second check valve 34, the first check valve 33 is connected between the second solenoid valve 32 and the inlet of the second filtering device 20, the first check valve 33 can conduct the second solenoid valve 32 and the second filtering device 20 in a single direction, water can flow from the second solenoid valve 32 to the second filtering device 20 through the first check valve 33, and water cannot flow from the second filtering device 20 to the second solenoid valve 32 through the first check valve 33. The second check valve 34 is connected between the outlet of the first filtering device 10 and the inlet of the second filtering device 20, and the second check valve 34 can conduct the first filtering device 10 and the second filtering device 20 in a single direction. Specifically, an inlet of the first check valve 33 communicates with an outlet of the second solenoid valve 31, an outlet of the first check valve 33 communicates with an inlet of the second filter device 20, an inlet of the second check valve 34 communicates with an outlet of the first filter device 10, and an outlet of the second check valve 34 communicates with an inlet of the second filter device 20. Further, an inlet of the first check valve 33 is communicated with an outlet of the second solenoid valve 31 through a pipeline, an outlet of the first check valve 33 is communicated with an inlet of the second filtering device 20 through a pipeline, the first check valve 33 is connected between an outlet of the second solenoid valve 31 and an inlet of the second filtering device 20, an inlet of the second check valve 34 is communicated with an outlet of the first filtering device 10 through a pipeline, an outlet of the second check valve 34 is communicated with an inlet of the second filtering device 20 through a pipeline, and the second check valve 34 is connected between an outlet of the first filtering device 10 and an inlet of the second filtering device 20. Wherein, the outlet of the first check valve 33 is communicated with the outlet of the second check valve 34 and the inlet of the second filter device 20 through the pipeline, and by arranging the first check valve 33, after water flows out from the outlet of the first filter device 10, the water can be prevented from flowing back to the inlet of the first filter device 10 through the second electromagnetic valve 31, and the water flow of the water purifying equipment is prevented from being influenced. In addition, by providing the second check valve 34, the water between the second check valve 34 and the second filtering device 20 can be prevented from flowing back to the inlet of the first filtering device 10, and the water quality of the water outlet of the water purifying apparatus can be prevented from being influenced by the mixing of the inlet water of the second filtering device 20 and the outlet water of the first filtering device 10.

Further, as shown in fig. 1, when the first electromagnetic valve 30 and the third electromagnetic valve 32 are opened and the second electromagnetic valve 31 is closed, the first filtering device 10 performs a filtering operation, and it should be noted that after tap water flows into the water purification system 100 from the water inlet 200, the tap water flows into the first filtering device 10 through the first electromagnetic valve 30, and the tap water filtered by the first filtering device 10 becomes pure water and flows to the water outlet 300 through the third electromagnetic valve 32. When the first electromagnetic valve 30 and the third electromagnetic valve 32 are closed and the second electromagnetic valve 31 is opened, the second filtering device 20 operates, and it should be noted that after the tap water flows into the water purification system 100 from the water inlet 200, the tap water flows into the second filtering device 20 through the second electromagnetic valve 31, and the tap water filtered by the second filtering device 20 becomes pure water and flows to the water outlet 300 through the outlet of the second filtering device 20. Wherein, the water purification system 100 can also purify the tap water flowing into the water inlet 200 through the first filtering device 10 and the second filtering device 20 alternately, specifically, by controlling the open/close states of the first electromagnetic valve 30, the second electromagnetic valve 31 and the third electromagnetic valve 32, the first filtering device 10 and the second filtering device 20 are controlled to purify the tap water flowing into the water inlet 200 alternately, under the condition that the first filtering device 10 and the second filtering device 20 do not work simultaneously, the water demand of the user can be met, and because the first filtering device 10 and the second filtering device 20 have service lives, the tap water flowing into the water inlet 200 needs to be replaced after long-term use, and by controlling the first filtering device 10 and the second filtering device 20 to purify the tap water flowing into the water inlet 200 alternately, the service time of the first filtering device 10 and the second filtering device 20 can be prolonged, thereby prolonging the service lives of the first filtering device 10 and the second filtering device 20.

Further, as shown in fig. 1, the water purification system 100 may further include: the third filtering device 40 and the booster pump 50, the third filtering device 40 can be set as a front-rear composite filter element, the first inlet of the third filtering device 40 is communicated with the water inlet 200, the booster pump 50 is connected between the first outlet of the third filtering device 40 and the first electromagnetic valve 30, and the booster pump 50 is connected between the first outlet of the third filtering device 40 and the second electromagnetic valve 31, the second inlet of the third filtering device 40 is respectively communicated with the outlet of the second filtering device 20 and the third electromagnetic valve 32, and the second outlet of the third filtering device 40 is communicated to the water outlet 300. Specifically, a first outlet of the third filtering device 40 communicates with an inlet of the booster pump 50, outlets of the booster pump 50 communicate with an inlet of the first solenoid valve 30 and an inlet of the second solenoid valve 31, respectively, a second inlet of the third filtering device 40 communicates with an outlet of the second filtering device 20 and an outlet of the third solenoid valve 32, respectively, and a second outlet of the third filtering device 40 communicates to the water outlet 300.

Specifically, a first inlet of the third filtering device 40 is communicated with the water inlet 200 through a pipeline, a first outlet of the third filtering device 40 is communicated with an inlet of the booster pump 50 through a pipeline, an outlet of the booster pump 50 is respectively communicated with an inlet of the first electromagnetic valve 30 and an inlet of the second electromagnetic valve 31 through a pipeline, a second inlet of the third filtering device 40 is respectively communicated with an outlet of the second filtering device 20 and an outlet of the third electromagnetic valve 32 through a pipeline, and a second outlet of the third filtering device 40 is communicated with the water outlet 300 through a pipeline. After the tap water flows into the water purification system 100 from the water inlet 200, the water flows into the third filtering device 40 from the first inlet of the third filtering device 40, and then flows into the booster pump 50 from the first outlet of the third filtering device 40, the booster pump 50 boosts the pressure of the water, the water flows to the inlet of the first solenoid valve 30 and the inlet of the second solenoid valve 31 through the booster pump 50, the water flows into the third filtering device 40 from the second inlet of the third filtering device 40 after flowing out from the outlet of the second filtering device 20 and/or the outlet of the third solenoid valve 32, and then the water flows to the water outlet 300 from the second outlet of the third filtering device 40. Through setting up third filter equipment 40, can increase the purification number of times to water, can promote water purification unit's play water quality of water to can promote water purification unit and use experience, and, through setting up booster pump 50, can guarantee water pressure in water purification system 100, be favorable to rivers to go out water purification system 100, thereby be favorable to rivers to go out water purification unit.

Further, as shown in fig. 1, the water purification system 100 may further include: and an inlet of the third check valve 35 is communicated with a second outlet of the third filtering device 40, an outlet of the third check valve 35 is communicated with the water outlet 300, further, an inlet of the third check valve 35 is communicated with a second outlet of the third filtering device 40 through a pipeline, and an outlet of the third check valve 35 is communicated with the water outlet 300 through a pipeline. By providing the third check valve 35, it is possible to prevent water from flowing back into the water purification system 100 from the second outlet of the third filtering device 40.

Further, as shown in fig. 1, the water purification system 100 may further include: high-voltage switch 36, high-voltage switch 36 can be connected with water purification unit's controller communication, water purification unit's controller and first solenoid valve 30, second solenoid valve 31 and third solenoid valve 32 all communication connection, high-voltage switch 36 sets up the pipeline between the export of third check valve 35 and delivery port 300, when delivery port 300 closes, water purification unit does not go out to the outside this moment, high-voltage switch 36 detects the interior water pressure increase of pipeline between the export of third check valve 35 and delivery port 300, high-voltage switch 36 transmits pressure signal for the controller, the controller can control first solenoid valve 30, second solenoid valve 31 and third solenoid valve 32 all close, control water purification unit shuts down. When the water outlet 300 is opened, the water purifying apparatus discharges water to the outside at this time, the high-pressure switch 36 detects that the water pressure in the pipeline between the outlet of the third check valve 35 and the water outlet 300 is reduced, the high-pressure switch 36 transmits a pressure signal to the controller, the controller controls the starting of the water purifying apparatus, and the controller controls the opening states of the first electromagnetic valve 30, the second electromagnetic valve 31 and the third electromagnetic valve 32, so that the first filtering device 10 and the second filtering device 20 are connected in series or in parallel.

Further, as shown in fig. 1, the water purification system 100 may further include: the water purifying apparatus comprises a first wastewater solenoid valve 37 and a second wastewater solenoid valve 38, the water purifying apparatus has a wastewater port 400, a first wastewater outlet of the first filtering device 10 is communicated with an inlet of the first wastewater solenoid valve 37, an outlet of the first wastewater solenoid valve 37 is communicated with the wastewater port 400, a second wastewater outlet of the second filtering device 20 is communicated with an inlet of the second wastewater solenoid valve 38, and an outlet of the second wastewater solenoid valve 38 is communicated with the wastewater port 400. After the first wastewater solenoid valve 37 is opened, wastewater in the first filtering device 10 flows through the first wastewater outlet, the first wastewater solenoid valve 37 and the wastewater port 400 in sequence, so that the effect of discharging wastewater in the first filtering device 10 is realized. After the second wastewater solenoid valve 38 is opened, wastewater in the second filtering device 20 flows through the second wastewater outlet, the second wastewater solenoid valve 38 and the wastewater outlet 400 in sequence, so that the wastewater in the second filtering device 20 is discharged. When the water purifying device is in a low-temperature environment below 0 ℃, the freezing volume expansion phenomenon can occur in the water inside the first filtering device 10, the inside of the second filtering device 20 and the water path (namely, the pipeline), and by arranging the first wastewater solenoid valve 37 and the second wastewater solenoid valve 38, the water can be discharged from the first wastewater solenoid valve 37 and the second wastewater solenoid valve 38, so that the problem of frost crack and water leakage caused by freezing inside the first filtering device 10, the inside of the second filtering device 20 and the water path can be effectively prevented.

Further, as shown in fig. 1, the water purification system 100 may further include: first TDS probe 39 and second TDS probe 391, the pipeline between the first outlet of third filter equipment 40 and the import of booster pump 50 is provided with first TDS probe 39, and the pipeline between the export of third check valve 35 and delivery port 300 is provided with second TDS probe 391. First TDS probe 39, second TDS probe 391 all are connected with water purification unit's controller, and first TDS probe 39 is arranged in detecting the ion concentration in the water that flows out from the first export of third filter equipment 40, and first TDS probe 39 detects out and transmits ion concentration information in the water to the controller after the ion concentration in the water that flows out from the first export of third filter equipment 40, and the controller can control water purification unit's display panel display aquatic ion concentration information.

The second TDS probe 391 is used for detecting the ion concentration in the effluent water from the outlet of the third check valve 35, and the second TDS probe 391 detects the ion concentration in the effluent water from the outlet of the third check valve 35 and then transmits the ion concentration information in the effluent water to the controller, and the controller can control the display panel of the water purification device to display the ion concentration information in the effluent water from the outlet of the third check valve 35.

According to the second embodiment of the water purification system 100 of the embodiment of the present invention, as shown in fig. 2, the water purification system 100 can further include: a first solenoid valve 30, a second solenoid valve 31 and a third solenoid valve 32, it can also be understood that the control valve assembly comprises a first solenoid valve 30, a second solenoid valve 31 and a third solenoid valve 32, the first solenoid valve 30 is connected between the water inlet 200 and the inlet of the first filtering device 10, the first solenoid valve 30 can control the inlet of the first filtering device 10 to selectively communicate with the water inlet 200. The second solenoid valve 31 is connected between the inlets of the first and

second solenoid valves

30 and 20, and the inlet of the second filter 20 is selectively communicated with the water inlet 200 by controlling the inlets of the first and

second solenoid valves

30 and 31, wherein when both the first and

second solenoid valves

30 and 31 are opened, the inlet of the second filter 20 is communicated with the water inlet 200, and when one of the first and

second solenoid valves

30 and 31 is closed, the inlet of the second filter 20 is not communicated with the water inlet 200. The third solenoid valve 32 is connected between the outlet of the first filtering device 10 and the water outlet 300, and the third solenoid valve 32 can control the outlet of the first filtering device 10 to selectively communicate with the water outlet 300. Specifically, an inlet of the first solenoid valve 30 is communicated with the water inlet 200, an outlet of the first solenoid valve 30 is communicated with an inlet of the first filtering device 10 and an inlet of the second solenoid valve 31, respectively, an outlet of the second solenoid valve 31 is communicated with an inlet of the second filtering device 20, an inlet of the third solenoid valve 32 is communicated with an outlet of the first filtering device 10, an outlet of the third solenoid valve 32 and an outlet of the second filtering device 20 are communicated with the water outlet 300, respectively, and an outlet of the first filtering device 10 is communicated with an inlet of the second filtering device 20. Further, an inlet of the first solenoid valve 30 is communicated with the water inlet 200 through a pipeline, an outlet of the first solenoid valve 30 is communicated with an inlet of the first filtering device 10 and an inlet of the second solenoid valve 31 through a pipeline, an outlet of the second solenoid valve 31 is communicated with an inlet of the second filtering device 20 through a pipeline, an inlet of the third solenoid valve 32 is communicated with an outlet of the first filtering device 10 through a pipeline, an outlet of the third solenoid valve 32 and an outlet of the second filtering device 20 are communicated with the water outlet 300 through a pipeline, and an outlet of the first filtering device 10 is communicated with an inlet of the second filtering device 20 through a pipeline.

Wherein the first filtering device 10 is connected in parallel with the second filtering device 20 when the first solenoid valve 30, the second solenoid valve 31 and the third solenoid valve 32 are all open. When the first solenoid valve 30 is open and the second solenoid valve 31 and the third solenoid valve 32 are both closed, the first filtering device 10 is connected in series with the second filtering device 20.

As shown in fig. 2, when the first electromagnetic valve 30, the second electromagnetic valve 31, and the third electromagnetic valve 32 are all opened, tap water flows into the water purification system 100 from the water inlet 200, then the tap water flows through the first electromagnetic valve 30, a part of the tap water flowing through the first electromagnetic valve 30 flows into the first filter device 10, the tap water filtered by the first filter device 10 becomes pure water, flows to the water outlet 300 through the third electromagnetic valve 32, another part of the tap water flowing through the first electromagnetic valve 30 flows into the second filter device 20 through the second electromagnetic valve 31, and the tap water filtered by the second filter device 20 becomes pure water, and flows to the water outlet 300 through the outlet of the second filter device 20. When the first electromagnetic valve 30 is opened and the second electromagnetic valve 31 and the third electromagnetic valve 32 are both closed, after the tap water flows into the water purification system 100 from the water inlet 200, the tap water flows into the first filtering device 10 through the first electromagnetic valve 30, the tap water filtered by the first filtering device 10 becomes pure water and flows into the second filtering device 20, and the pure water filtered by the second filtering device 20 becomes ultrapure water and flows to the water outlet 300 through the outlet of the second filtering device 20. Through setting up first solenoid valve 30, second solenoid valve 31 and third solenoid valve 32, can realize freely switching first filter equipment 10 and second filter equipment 20 series connection or parallelly connected technological effect, can guarantee water purification system 100 working property to guarantee water purification unit's working property.

Further, as shown in fig. 2, the water purification system 100 may further include: a first check valve 33 and a second check valve 34, wherein the first check valve 33 is connected between the second electromagnetic valve 31 and the inlet of the second filtering device 20, and the first check valve 33 can conduct the second electromagnetic valve 31 and the second filtering device 20 in a single direction. The second check valve 34 is connected between the outlet of the first filter device 10 and the inlet of the second filter device 20, and the second check valve 34 can conduct the first filter device 10 and the second filter device 20 in a single direction. Specifically, an inlet of the first check valve 33 communicates with an outlet of the second solenoid valve 31, an outlet of the first check valve 33 communicates with an inlet of the second filter device 20, an inlet of the second check valve 34 communicates with an outlet of the first filter device 10, and an outlet of the second check valve 34 communicates with an inlet of the second filter device 20. Further, an inlet of the first check valve 33 is communicated with an outlet of the second solenoid valve 31 through a pipeline, an outlet of the first check valve 33 is communicated with an inlet of the second filtering device 20 through a pipeline, the first check valve 33 is connected between an outlet of the second solenoid valve 31 and an inlet of the second filtering device 20, an inlet of the second check valve 34 is communicated with an outlet of the first filtering device 10 through a pipeline, an outlet of the second check valve 34 is communicated with an inlet of the second filtering device 20 through a pipeline, and the second check valve 34 is connected between an outlet of the first filtering device 10 and an inlet of the second filtering device 20. Wherein, the outlet of the first check valve 33 is communicated with the inlet of the second filter device 20 through the pipeline between the outlet of the second check valve 34 and the outlet of the pipeline, and by arranging the first check valve 33, after water flows out from the outlet of the first filter device 10, the water can be prevented from flowing back to the inlet of the first filter device 10 through the second electromagnetic valve 31, and the water flow of the water purifying equipment is prevented from being influenced. In addition, by providing the second check valve 34, the water between the second check valve 34 and the second filter device 20 can be prevented from flowing back to the inlet of the first filter device 10, and the water quality of the water outlet of the water purifying apparatus can be prevented from being affected by the mixing of the inlet water of the second filter device 20 and the outlet water of the first filter device 10.

Further, as shown in fig. 2, when the first electromagnetic valve 30 and the third electromagnetic valve 32 are opened and the second electromagnetic valve 31 is closed, the first filtering device 10 performs a filtering operation, and it should be noted that after tap water flows into the water purification system 100 from the water inlet 200, the tap water flows into the first filtering device 10 through the first electromagnetic valve 30, and the tap water filtered by the first filtering device 10 becomes pure water and flows to the water outlet 300 through the third electromagnetic valve 32. When the first electromagnetic valve 30 and the second electromagnetic valve 31 are opened and the third electromagnetic valve 32 is closed, the second filtering device 20 operates, and it should be noted that after the tap water flows into the water purification system 100 from the water inlet 200, the tap water flows into the second electromagnetic valve 31 through the first electromagnetic valve 30, the tap water flows into the second filtering device 20 through the second electromagnetic valve 31, and the tap water filtered by the second filtering device 20 becomes pure water and flows to the water outlet 300 through the outlet of the second filtering device 20. Wherein, the water purification system 100 can also perform a primary purification of the tap water flowing into the water inlet 200 by the first filtering device 10 and the second filtering device 20 alternately. Specifically, by controlling the open/close states of the first solenoid valve 30, the second solenoid valve 31 and the third solenoid valve 32, the first filtering device 10 and the second filtering device 20 are controlled to alternately purify the tap water flowing into the water inlet 200, and in the case that the first filtering device 10 and the second filtering device 20 do not simultaneously work, the water demand of a user can be met, and because the first filtering device 10 and the second filtering device 20 have service lives and need to be replaced after long-term use, the service life of the first filtering device 10 and the second filtering device 20 can be prolonged by controlling the first filtering device 10 and the second filtering device 20 to alternately purify the tap water flowing into the water inlet 200, thereby prolonging the service life of the first filtering device 10 and the second filtering device 20.

Further, as shown in fig. 2, the water purification system 100 may further include: a third filtering device 40 and a booster pump 50, the first solenoid valve 30 is connected between the water inlet 200 and the first inlet of the third filtering device 40, the first solenoid valve 30 is used for controlling the water inlet 200 to be selectively communicated with the first inlet of the third filtering device 40, the booster pump 50 is connected between the first outlet of the third filtering device 40 and the inlet of the first filtering device 10, and the booster pump 50 is connected between the first outlet of the third filtering device 40 and the second solenoid valve 31, the second inlet of the third filtering device 40 is respectively communicated with the outlet of the second filtering device 20 and the third solenoid valve 32, and the second outlet of the third filtering device 40 is communicated with the water outlet 300. Further, the third filtering device 40 may be configured as a front-rear composite filter element, a first inlet of the third filtering device 40 is communicated with an outlet of the first solenoid valve 30, a first outlet of the third filtering device 40 is communicated with an inlet of the booster pump 50, an outlet of the booster pump 50 is communicated with an inlet of the first filtering device 10 and an inlet of the second solenoid valve 31, respectively, a second inlet of the third filtering device 40 is communicated with an outlet of the second filtering device 20 and an outlet of the third solenoid valve 32, respectively, and a second outlet of the third filtering device 40 is communicated to the water outlet 300.

Specifically, a first inlet of the third filtering device 40 is communicated with an outlet of the first solenoid valve 30 through a pipeline, a first outlet of the third filtering device 40 is communicated with an inlet of the booster pump 50 through a pipeline, an outlet of the booster pump 50 is communicated with an inlet of the first filtering device 10 and an inlet of the second solenoid valve 31 through pipelines, respectively, a second inlet of the third filtering device 40 is communicated with an outlet of the second filtering device 20 and an outlet of the third solenoid valve 32 through pipelines, respectively, and a second outlet of the third filtering device 40 is communicated with the water outlet 300 through a pipeline. After the tap water flows into the water purification system 100 from the water inlet 200, the water first flows through the first solenoid valve 30, then flows into the third filtering device 40 from the first inlet of the third filtering device 40, then flows into the booster pump 50 from the first outlet of the third filtering device 40, the booster pump 50 boosts the pressure of the water, the water flows to the inlet of the first filtering device 10 and the inlet of the second solenoid valve 31 through the booster pump 50, flows into the third filtering device 40 from the second inlet of the third filtering device 40 after flowing out from the outlet of the second filtering device 20 and/or the outlet of the third solenoid valve 32, and then flows to the water outlet 300 from the second outlet of the third filtering device 40. Through setting up third filter equipment 40, can increase the purification number of times to water, can promote water purification unit's play water quality of water to can promote water purification unit and use experience, and, through setting up booster pump 50, can guarantee water pressure in water purification system 100, be favorable to rivers to go out water purification system 100, thereby be favorable to rivers to go out water purification unit.

Further, as shown in fig. 2, the water purification system 100 may further include: and an inlet of the third check valve 35 is communicated with a second outlet of the third filtering device 40, an outlet of the third check valve 35 is communicated with the water outlet 300, further, an inlet of the third check valve 35 is communicated with a second outlet of the third filtering device 40 through a pipeline, and an outlet of the third check valve 35 is communicated with the water outlet 300 through a pipeline. By providing the third check valve 35, it is possible to prevent water from flowing back into the water purification system 100 from the second outlet of the third filtering device 40.

Further, as shown in fig. 2, the water purification system 100 may further include: high-voltage switch 36, high-voltage switch 36 can be connected with water purification unit's controller communication, water purification unit's controller and first solenoid valve 30, second solenoid valve 31 and third solenoid valve 32 all communication connection, high-voltage switch 36 sets up the pipeline between the export of third check valve 35 and delivery port 300, when delivery port 300 closes, water purification unit does not go out to the outside this moment, high-voltage switch 36 detects the interior water pressure increase of pipeline between the export of third check valve 35 and delivery port 300, high-voltage switch 36 transmits pressure signal for the controller, the controller can control first solenoid valve 30, second solenoid valve 31 and third solenoid valve 32 all close, control water purification unit shuts down. When the water outlet 300 is opened, the water purifying apparatus discharges water to the outside at this time, the high-pressure switch 36 detects that the water pressure in the pipeline between the outlet of the third check valve 35 and the water outlet 300 is reduced, the high-pressure switch 36 transmits a pressure signal to the controller, the controller controls the starting of the water purifying apparatus, and the controller controls the opening states of the first electromagnetic valve 30, the second electromagnetic valve 31 and the third electromagnetic valve 32, so that the first filtering device 10 and the second filtering device 20 are connected in series or in parallel.

Further, as shown in fig. 2, the water purification system 100 may further include: a first waste water solenoid valve 37 and a second waste water solenoid valve 38, the water purifying apparatus having a waste water port 400, the first waste water solenoid valve 37 being connected between the waste water port 400 and the first waste water outlet of the first filtering apparatus 10, the first waste water solenoid valve 37 being capable of controlling the first waste water outlet to selectively communicate with the waste water port 400. A second waste water solenoid valve 38 is connected between the waste water port 400 and a second waste water outlet of the second filtering device 20, and the second waste water solenoid valve 38 can control the second waste water outlet to selectively communicate with the waste water port 40. Specifically, the first waste water outlet of the first filtering device 10 is communicated with the inlet of the first waste water solenoid valve 37, the outlet of the first waste water solenoid valve 37 is communicated with the waste water port 400, the second waste water outlet of the second filtering device 20 is communicated with the inlet of the second waste water solenoid valve 38, and the outlet of the second waste water solenoid valve 38 is communicated with the waste water port 400. After the first wastewater solenoid valve 37 is opened, wastewater in the first filtering device 10 flows through the first wastewater outlet, the first wastewater solenoid valve 37 and the wastewater outlet 400 in sequence, so that the effect of discharging wastewater in the first filtering device 10 is realized. After the second wastewater solenoid valve 38 is opened, wastewater in the second filtering device 20 flows through the second wastewater outlet, the second wastewater solenoid valve 38 and the wastewater port 400 in sequence, so that the effect of discharging wastewater in the second filtering device 20 is achieved. When the water purifying apparatus is in a low temperature environment below 0 ℃, the freezing volume expansion phenomenon occurs in the water inside the first filtering device 10, the inside of the second filtering device 20 and the water path (i.e. the pipeline), and by arranging the first wastewater solenoid valve 37 and the second wastewater solenoid valve 38, the water can be discharged from the first wastewater solenoid valve 37 and the second wastewater solenoid valve 38, so that the problem of frost crack water leakage caused by freezing in the first filtering device 10, the inside of the second filtering device 20 and the water path can be effectively prevented.

Further, as shown in fig. 2, the water purification system 100 may further include: first TDS probe 39 and second TDS probe 391, the pipeline between the first outlet of third filter equipment 40 and the import of booster pump 50 is provided with first TDS probe 39, and the pipeline between the export of third check valve 35 and delivery port 300 is provided with second TDS probe 391. First TDS probe 39, second TDS probe 391 all are connected with water purification unit's controller, and first TDS probe 39 is arranged in detecting the ion concentration in the water that flows out from the first export of third filter equipment 40, and first TDS probe 39 detects out and transmits ion concentration information in the water to the controller after the ion concentration in the water that flows out from the first export of third filter equipment 40, and the controller can control water purification unit's display panel display aquatic ion concentration information.

It should be noted that the water purification system 100 of the first embodiment differs from the water purification system 100 of the second embodiment in the arrangement position of the first solenoid valve 30, the first solenoid valve 30 in the water purification system 100 of the first embodiment is arranged on the downstream side of the booster pump 50, and the first solenoid valve 30 in the water purification system 100 of the second embodiment is arranged on the upstream side of the third filter device 40.

In some embodiments of the present invention, an on/off touch button of "ultrapure water" is provided on the UI interface of the water purification apparatus, the indicator lamp is turned on when turned on, the water purification apparatus produces "ultrapure water", the "ultrapure water" is purified water produced by the water purification apparatus in the series connection mode of the first filtering apparatus 10 and the second filtering apparatus 20, the water is filtered twice, and the effluent desalination rate is 99% or more. When the water purifier is turned off, the indicator lamp is turned off, pure water is produced by the water purifier, the pure water is purified water produced by the water purifier in the mode that the first filtering device 10 and the second filtering device 20 are connected in parallel, the water is filtered for one time, and the desalination rate of the produced water is more than 90%. Water purification unit's water purification mode includes pure water mode and ultrapure water mode, first filter equipment 10 and second filter equipment 20 parallel connection during the pure water mode, first filter equipment 10 and second filter equipment 20 series connection during the ultrapure water mode, the user can select according to quality of water and the water demand of intaking, generally be greater than 300mg/L at the TDS of intaking and select water purification unit with the ultrapure water mode work, be less than 300mg/L at the TDS of intaking and select water purification unit pure water mode work. The factory default mode of the water purification equipment can be selected by a manufacturer from a pure water mode and an ultrapure water mode. The name of the water purification mode of the water purification apparatus is not limited to the "ultrapure water mode" or the "pure water mode", and may be defined according to the application.

Further, as shown in fig. 1, taking the water purification system 100 of the first embodiment as an example for explanation, the touch button for turning on/off the ultrapure water and the controller of the water purification apparatus adopt a transmission mode of "jog signal", where the jog signal 1 represents "ultrapure water" is turned on, and the jog signal 0 represents "ultrapure water" is turned off. When a user presses a key for starting the ultrapure water, the key transmits a inching signal 1 to a controller of the water purifier and an indicator lamp is turned on, the success of selecting the ultrapure water mode is shown, and the controller records the selected mode. As shown in fig. 1, when the controller of the water purifying apparatus receives a water getting instruction, the first electromagnetic valve 30 and the booster pump 50 are opened to start water production, other electric devices not mentioned are in a closed state, and finally purified water is discharged from the faucet, and at this time, the desalination rate of the purified water reaches more than 99%, so as to meet the water demand of a user.

Further, under the condition that the indicator light is turned on, when a user presses the 'ultrapure water' key, the key transmits a click signal 0 to the controller of the water purifying equipment, the indicator light is turned off, the 'ultrapure water' mode is successfully closed, the 'pure water' mode is automatically entered, and the controller records the selected mode. When a controller of the water purifying device receives a water taking instruction, the booster pump 50, the first electromagnetic valve 30, the second electromagnetic valve 31 and the third electromagnetic valve 32 are opened, the first filtering device 10 and the second filtering device 20 are connected in parallel to start water production, other electric devices which are not mentioned are in a closed state, finally purified water is discharged from a faucet, and at the moment, the desalination rate of the purified water is over 90 percent, so that the water demand of a user is met. The user can select the water outlet mode of the water purification device through the UI interface of the water purification device, and the water requirements of different scenes are met.

Note that the arrows in fig. 1 and 2 indicate the water flow direction.

As shown in fig. 1 to 3, the water purifying method of the water purifying apparatus according to the embodiment of the present invention is the water purifying apparatus in the above-mentioned embodiment, the water purifying apparatus has a water inlet 200 and a water outlet 300, and the water purifying apparatus includes a first filtering device 10 (the first filtering device 10 in the above-mentioned embodiment) and a second filtering device 20 (the second filtering device 20 in the above-mentioned embodiment) disposed between the water inlet 200 and the water outlet 300, and a control valve assembly (the control valve assembly in the above-mentioned embodiment) for controlling a communication relationship between the first filtering device 10 and the second filtering device 20, and the first filtering device 10, the second filtering device 20, and the control valve assembly constitute the water purifying system 100 in the above-mentioned embodiment. The water purification method comprises the following steps:

s10, when the water purification equipment is started to discharge water, determining a water purification mode of the water purification equipment, wherein the water purification mode comprises a pure water mode and an ultra-pure water mode.

It should be noted that, the user can select the water purification mode of setting for water purification unit through the touch button that ultrapure water on the UI interface of water purification unit opened/closed, and the user can rationally select water purification unit's water purification mode according to the difference of different areas quality of water to guarantee that water purification unit's play water quality of water satisfies user's user demand.

And S20, when the water purification mode of the water purification equipment is the ultra-pure water mode, controlling the control valve assembly to enable the first filtering device and the second filtering device to be connected in series, and carrying out secondary purification on tap water flowing into the water inlet by the water purification equipment.

It should be noted that, during the ultrapure water mode, the control valve assembly controls the first filtering device and the second filtering device to be connected in series, so that the water purification system of the water purification apparatus performs secondary purification on tap water flowing into the water inlet, when the water quality of the water purification apparatus is poor in the use area, for example: when the TDS of water is greater than 300mg/L, can work under with the ultrapure water mode through selecting water purification unit, can guarantee the purifying effect to water, guarantee water purification unit's play water quality of water requirement.

And S30, when the water purification mode of the water purification equipment is the pure water mode, controlling the control valve assembly to enable the first filtering device and the second filtering device to be connected in parallel, and purifying tap water flowing into the water inlet by the water purification equipment for the first time.

It should be noted that, when the water purification apparatus is in the pure water mode, the control valve assembly controls the first filtering device and the second filtering device to be connected in parallel, so that the water purification system performs primary purification on the tap water flowing into the water inlet. When the water quality of the water purifying equipment is better in the using area, for example: when the TDS of water is less than 300mg/L, can work under with the pure water mode through selecting water purification unit, can guarantee the purifying effect to water, guarantee water purification unit's play water quality of water requirement.

Therefore, by the water purification method, when the water purification equipment is used in different areas, the difference of the water quality of the water outlet of the water purification equipment can be reduced, the water outlet requirements of different scenes can be met, the water requirements of users in different water using scenes can be met, the problem that the difference of the water quality of the water outlet of the water purification equipment in different water quality areas is large is solved, in addition, the first filtering device and the second filtering device are controlled to be connected in series or in parallel according to different water qualities of different areas, the purification effect of the water purification equipment on tap water can be ensured, and the requirements of users on the water quality of the water outlet can be met.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a water purification unit's water purification system, water purification unit has water inlet and delivery port, its characterized in that, water purification system includes:

a first filter device having an inlet in selective communication with the water inlet, an outlet in selective communication with the water outlet, and a second filter device having an inlet in selective communication with the water inlet and to the outlet of the first filter device, and an outlet in communication with the water outlet,

2. The water purification system of claim 1, further comprising: a first solenoid valve, a second solenoid valve and a third solenoid valve,

3. The water purification system of claim 2, further comprising: the first check valve is connected between the second electromagnetic valve and an inlet of the second filtering device so as to conduct the second electromagnetic valve and the second filtering device in a one-way mode;

4. The water purification system of claim 2, wherein the first filtering means performs a filtering operation when the first and third solenoid valves are opened and the second solenoid valve is closed; when the first electromagnetic valve and the third electromagnetic valve are closed and the second electromagnetic valve is opened, the second filtering device works; wherein, the water purification system also purifies the tap water flowing into the water inlet for one time through the first filtering device and the second filtering device alternately.

5. The water purification system of claim 2, further comprising: a third filtering device and a booster pump, wherein a first inlet of the third filtering device is communicated with the water inlet, the booster pump is connected between a first outlet of the third filtering device and the first electromagnetic valve and between a first outlet of the third filtering device and the second electromagnetic valve,

6. The water purification system of claim 1, further comprising: a first solenoid valve, a second solenoid valve and a third solenoid valve,

7. The water purification system of claim 6, further comprising: a first one-way valve and a second one-way valve,

8. The water purification system of claim 6, wherein the first filtering device performs a filtering operation when the first and third solenoid valves are open and the second solenoid valve is closed; when the first electromagnetic valve and the second electromagnetic valve are opened and the third electromagnetic valve is closed, the second filtering device works; wherein, the water purification system also purifies the tap water flowing into the water inlet for one time through the first filtering device and the second filtering device alternately.

9. The water purification system of claim 6, further comprising: a third filtering device and a booster pump, wherein the first electromagnetic valve is connected between the water inlet and the first inlet of the third filtering device, the booster pump is connected between the first outlet of the third filtering device and the inlet of the first filtering device and between the first outlet of the third filtering device and the second electromagnetic valve,

10. The water purification system of any one of claims 1-9, further comprising: the water purifying device comprises a first wastewater electromagnetic valve and a second wastewater electromagnetic valve, and the water purifying device is provided with a wastewater outlet;

the first waste water solenoid valve is connected between the waste water port and a first waste water outlet of the first filtering device to control the first waste water outlet to be selectively communicated with the waste water port;