CN216972232U

CN216972232U - Water purification system

Info

Publication number: CN216972232U
Application number: CN202220470750.5U
Authority: CN
Inventors: 孙易蒙; 韩西利; 陈明益
Original assignee: AO Smith China Water Heater Co Ltd; AO Smith China Environmental Products Co Ltd
Current assignee: AO Smith China Water Heater Co Ltd; AO Smith China Environmental Products Co Ltd
Priority date: 2022-03-03
Filing date: 2022-03-03
Publication date: 2022-07-15
Anticipated expiration: 2032-03-03

Abstract

The utility model discloses a water purification system, which relates to the technical field of water treatment, and the water purification system comprises: a water inlet end; a waste water discharge end; a filtered water outlet end; a first filtering unit, wherein a wastewater outlet of the first filtering unit can be communicated with the wastewater discharge end, and a filtered water outlet of the first filtering unit can be communicated with the filtered water outlet end; the sterilizing water generating unit can generate sterilizing water, an inlet of the sterilizing water generating unit can be communicated with the water inlet end, and an outlet of the sterilizing water generating unit can be communicated with an inlet of the first filtering unit. The application can kill bacteria on the first filtering unit and the pipeline on the upstream of part of the first filtering unit.

Description

Water purification system

Technical Field

The utility model relates to the technical field of water treatment, in particular to a water purification system.

Background

With the increasing improvement of drinking water quality, water purifying devices gradually come into people's lives, such as homes, companies, public places, and the like.

The filtering unit in the existing water purifying device can effectively remove impurities in raw water to obtain filtered water, and if the TDS value of the filtered water of tap water meets the direct drinking water standard. However, the filtering unit cannot kill bacteria in tap water, and after the water purifying device is not used for a long time, the bacteria can breed and propagate on the surface of the filtering unit and a pipeline on the upstream of the filtering unit, so that the water quality of the water discharged from the water purifying device is reduced, and the service life of the filtering unit is also influenced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned drawbacks of the prior art, an embodiment of the present invention provides a water purification system capable of sterilizing bacteria in a pipeline upstream of a first filter unit and a portion thereof.

The specific technical scheme of the embodiment of the utility model is as follows:

a water purification system, the water purification system comprising:

a water inlet end;

a waste water discharge end;

a filtered water outlet end;

the waste water outlet of the first filtering unit can be communicated with the waste water discharge end, and the filtered water outlet of the first filtering unit can be communicated with the filtered water outlet end;

the sterilizing water generating unit can generate sterilizing water, an inlet of the sterilizing water generating unit can be communicated with the water inlet end, and an outlet of the sterilizing water generating unit can be communicated with an inlet of the first filtering unit.

Preferably, the water purification system further comprises:

one end of the first pipeline can be communicated with the filtered water outlet of the first filtering unit, and the other end of the first pipeline can be communicated with the inlet of the sterilizing water generating unit.

Preferably, the first pipeline, the sterilizing water generating unit and the first filtering unit can form a circulating waterway;

the water purification system still includes: and the supercharging device is arranged on the circulating water path and is used for driving the water in the circulating water path to flow from the sterilizing water generating unit to the inlet of the first filtering unit.

Preferably, the sterilizing water generating unit has an accommodating chamber in which the sterilizing water generating unit can generate sterilizing water.

Preferably, the water purification system further comprises: the second filtering unit is connected between the inlet of the first filtering unit and the water inlet end and comprises a pretreatment filtering unit.

Preferably, the water purification system has a first state and a second state: in a first state, the sterilizing water generating unit is turned on to generate sterilizing water;

in a second state, the sterilizing water generating unit is closed, the water inlet end is communicated with the sterilizing water generating unit, and the waste water outlet of the first filtering unit is communicated with the waste water discharge end.

Preferably, in the first state, the water inlet end and the sterilizing water generating unit are in a disconnected state, and the waste water outlet of the first filtering unit and the waste water discharge end are in a disconnected state; or, in the first state, the water inlet end is communicated with the sterilizing water generating unit, and the waste water outlet of the first filtering unit is communicated with the waste water discharge end.

Preferably, the water purification system further comprises:

and one end of the first pipeline can be communicated with the filtered water outlet of the first filtering unit, and the other end of the first pipeline can be communicated with the upstream of the inlet of the second filtering unit.

Preferably, at least the first pipe, the second filtering unit and the first filtering unit can form a circulating water circuit;

Preferably, the water purification system has a first state, a second state and a third state: in a first state, the sterilizing water generating unit is turned on to generate sterilizing water;

in a second state, the sterilizing water generating unit is closed, the water inlet end is communicated with the sterilizing water generating unit, and the waste water outlet of the first filtering unit is communicated with the waste water discharge end;

in a third state, the supercharging device is opened, and the waste water outlet of the first filtering unit and the waste water discharge end are in a disconnected state.

Preferably, when the water purification system includes a second filter unit, the second filter unit is disposed upstream of the sterilizing water generating unit, and at least the first pipe, the second filter unit, the sterilizing water generating unit, and the first filter unit can form a circulation waterway.

Preferably, when the water purification system includes a second filter unit, the second filter unit is disposed between an outlet of the sterilizing water generating unit and an inlet of the first filter unit, and the other end of the first pipe may communicate with the inlet of the sterilizing water generating unit or the other end of the first pipe may communicate with the inlet of the second filter unit.

Preferably, the water purification system can be switched from the first state to the third state and then from the third state to the second state.

Preferably, a multifunctional valve unit having a waste water ratio function and an on-off function is connected between the waste water discharge end and the waste water outlet of the first filtering unit.

Preferably, the first filter unit comprises at least one of: a reverse osmosis membrane filtration unit and a nanofiltration membrane filtration unit.

Preferably, the water purification system further comprises: and the third filtering unit is connected between the filtered water outlet of the first filtering unit and the filtered water outlet end and comprises a post-filtering unit, and one end of the first pipeline can be communicated with an outlet of the third filtering unit.

Preferably, the first pipeline is provided with a one-way valve which is communicated from the filtered water outlet of the first filtering unit to the inlet of the sterilizing water generating unit.

Preferably, the sterilizing water generating unit includes an electrolytic water unit capable of generating sterilizing water having hypochlorite.

Preferably, a first open-close valve is provided at the water inlet end.

The technical scheme of the utility model has the following remarkable beneficial effects:

the water purification system in this application can generate the water of disinfecting through the water of disinfecting generation unit, lets in the water of disinfecting that will generate to first filter unit when intaking and holding the water intake to disinfect to first filter unit inside, the water of disinfecting after disinfecting is discharged from first filter unit's waste water outlet, later discharges water purification system through waste water discharge end. Through the mode, bacteria in the first filtering unit and on the upstream pipeline of the first filtering unit part can be effectively killed, so that the water quality of filtered water output by the water purifying system is improved, and the service life of the filtering unit is prolonged.

Specific embodiments of the present invention are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the utility model may be employed. It should be understood that the embodiments of the utility model are not so limited in scope. Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.

Drawings

The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for facilitating the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. Those skilled in the art, having the benefit of the teachings of this invention, may choose from the various possible shapes and proportional sizes to implement the utility model as a matter of case.

FIG. 1 is a schematic structural diagram of a water purification system in a first embodiment according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a multifunctional valve unit according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a multifunctional valve unit in another embodiment according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a water purification system in a second embodiment according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a water purification system according to a third embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a water purification system in a fourth embodiment according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a water purification system in a fifth embodiment according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a water purification system in a sixth embodiment according to an embodiment of the present invention.

Reference numerals of the above figures:

1. a water inlet end; 2. a waste water discharge end; 3. a filtered water outlet end; 4. a first filter unit; 5. a sterilizing water generating unit; 6. a first pipeline; 61. a one-way valve; 7. a pressure boosting device; 8. a second filter unit; 9. A third filtering unit; 10. a multifunctional valve unit; 101. a second opening/closing valve; 102. a third opening and closing valve; 103. A wastewater ratio device; 11. a first opening/closing valve.

Detailed Description

The details of the present invention will become more apparent in light of the accompanying drawings and description of specific embodiments thereof. However, the specific embodiments of the present invention described herein are for the purpose of illustration only and are not to be construed as limiting the utility model in any way. Any possible variations based on the present invention may be conceived by the skilled person in the light of the teachings of the present invention, and these should be considered to fall within the scope of the present invention. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, indirect connections through intermediaries, and the like. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In order to kill bacteria in the first filtering unit and on the pipeline of the first filtering unit and a part of the upstream, a water purifying system is proposed in the present application, fig. 1 is a schematic structural diagram of the water purifying system in a first embodiment of the present invention, fig. 4 is a schematic structural diagram of the water purifying system in a second embodiment of the present invention, fig. 5 is a schematic structural diagram of the water purifying system in a third embodiment of the present invention, fig. 6 is a schematic structural diagram of the water purifying system in a fourth embodiment of the present invention, fig. 7 is a schematic structural diagram of the water purifying system in a fifth embodiment of the present invention, fig. 8 is a schematic structural diagram of the water purifying system in a fifth embodiment of the present invention, and as shown in fig. 1, fig. 4 to fig. 8, the water purifying system may include: a water inlet end 1; a waste water discharge end 2; a filtered water outlet end 3; the waste water outlet of the first filtering unit 4 can be communicated with the waste water discharge end 2, and the filtered water outlet of the first filtering unit 4 can be communicated with the filtered water outlet end 3; the sterilizing water generating unit 5 capable of generating sterilizing water, the inlet of the sterilizing water generating unit 5 can be communicated with the water inlet end 1, and the outlet of the sterilizing water generating unit 5 can be communicated with the inlet of the first filtering unit 4.

The water purification system in this application can generate the water of disinfecting through the water of disinfecting generating unit 5, lets in the water of disinfecting that generates to first filter unit 4 when intaking 1 intake to 4 inside disinfecting to first filter unit, the water of disinfecting after disinfecting is discharged from the waste water outlet of first filter unit 4, later through waste water discharge end 2 discharge water purification system. Through the mode, bacteria in the first filtering unit 4 and on part of upstream pipelines of the first filtering unit 4 can be effectively killed, so that the water quality of filtered water output by the water purifying system is improved, and the service life of the filtering unit is prolonged.

In order to better understand the water purification system of the present application, it will be further explained and illustrated below. As shown in fig. 1, the water purification system may include: a water inlet end 1, a waste water discharge end 2, a filtered water outlet end 3, a first filtering unit 4, a sterilized water generating unit 5 and the like. The water inlet end 1 is used for being connected with a water source so as to receive water from the water source and input the water into the water purification system. The sterilizing water generating unit 5 can generate sterilizing water which can sterilize the first filtering unit 4 and the pipeline upstream of the first filtering unit 4, does not limit the concrete types of the sterilizing water in the application, and only needs to meet the sterilizing requirement. The inlet of the sterilizing water generating unit 5 can communicate with the water inlet port 1 to receive water input from the water inlet port 1. As a practical matter, a first open-close valve 11 may be disposed at the water inlet end 1, and the on-off between the water purification system and the water source may be controlled by controlling the open-close of the first open-close valve 11, so as to control whether the water from the water source enters the water purification system and then enters the sterilizing water generating unit 5.

As shown in fig. 1, the first filter unit 4 serves to filter raw water to output filtered water, which is discharged from a filtered water outlet of the first filter unit 4. The filtered water outlet of the first filter unit 4 can communicate with the filtered water outlet end 3 so that the filtered water discharged from the filtered water outlet of the first filter unit 4 is output from the filtered water outlet end 3 to be discharged out of the water purification system for use by a user. In the process of producing filtered water by the first filter unit 4, waste water containing impurities at a higher concentration is produced and discharged from the waste water outlet of the first filter unit 4. The waste water outlet of the first filter unit 4 can communicate with the waste water discharge 2, whereby waste water is discharged out of the water purification system. The first filtering unit 4 may be a filtering unit that needs to discharge waste water during filtering, and the filtering unit may be made of a filtering membrane, for example, a reverse osmosis membrane filtering unit, a nanofiltration membrane filtering unit, and the like, and is not particularly limited in this application.

As a possibility, in one embodiment, the sterilizing water generating unit 5 may include an electrolytic water unit capable of generating sterilizing water having hypochlorite. When the water source is tap water, since tap water contains chlorine ions, when the tap water passes through the electrolytic water cell, the electrolytic water cell can electrolyze oxidizing ions such as hypochlorite (ClO) -ions, hydroxide (OH) -ions, and hydroxyl radicals to form sterilizing water. This ion that has the oxidability can oxidation material such as the bacterium in aquatic, makes it lose activity to can reach bactericidal effect when this rivers are gone up through the pipeline of first filter unit 4 and its part upper reaches, avoid the bacterium to breed further on the pipeline of first filter unit 4 and its part upper reaches. The electrolyzed water unit can generate the sterilized water only under the condition of power supply, and a user does not need to additionally add sterilizing substances to form the sterilized water.

As shown in fig. 1, a multifunctional valve unit 10 having a waste water ratio function and an on-off function may be connected between the waste water discharge end 2 and the waste water outlet of the first filtering unit 4. When the wastewater ratio function in the multifunctional valve unit 10 is enabled, the water purification system can normally prepare filtered water for users to use. The waste water produced by the first filtering unit 4 is discharged from the waste water discharge end 2 after passing through the multifunctional valve unit 10. The multifunctional valve unit 10 may be in a communication state, specifically, the multifunctional valve unit 10 may be completely communicated or may have a certain flow restriction function, and the water flowing in from the inlet of the first filtering unit 4 may be directly discharged from the waste water outlet of the first filtering unit 4, and may be discharged from the waste water discharge end 2 to the water purification system after passing through the multifunctional valve unit 10. The multifunctional valve unit 10 may be in a disconnected state in which the waste water outlet of the first filtering unit 4 is disconnected from the waste water discharging end 2, and the waste water outlet of the first filtering unit 4 cannot discharge water, thereby discharging the water purification system from the waste water discharging end 2.

In order to realize the above functions of the multifunctional valve unit 10, as a practical matter, fig. 2 is a schematic structural view of the multifunctional valve unit in the embodiment of the present invention, and as shown in fig. 2, the multifunctional valve unit 10 may include a waste water ratio device 103 and a second opening and closing valve 101, and a third opening and closing valve 102, which are connected in series. The third opening/closing valve 102 is provided in parallel with the waste water ratio device 103 and the second opening/closing valve 101 connected in series. When the waste water ratio function in the multifunction valve unit 10 is activated, the third opening/closing valve 102 is closed, the second opening/closing valve 101 is opened, and the waste water ratio device 103 is activated. When the multifunctional valve unit 10 is in the communication state, in this case, the multifunctional valve unit 10 is in the complete communication state where there is no flow restriction, and the third opening/closing valve 102 is opened, the second opening/closing valve 101 and the waste water ratio device 103 may not be required. When the multifunction valve unit 10 is in the off state, the second opening/closing valve 101 is closed, and the third opening/closing valve 102 is closed.

As a matter of feasibility, fig. 3 is a schematic diagram of the multi-function valve unit in another embodiment of the present invention, and as shown in fig. 3, the multi-function valve unit 10 may include a waste water ratio device 103 and a second on-off valve 101 connected in series, when the waste water ratio function in the multi-function valve unit 10 is activated, the second on-off valve 101 is opened, and the waste water ratio device 103 is activated. When the multifunction valve unit 10 is in the communicating state, at this time, the second opening and closing valve 101 may be opened for communication in which there is a flow restriction of the multifunction valve unit 10. When the multifunction valve unit 10 is in the off state, the second opening-closing valve 101 is closed.

As a matter of course, in order to increase the filtration rate of the first filter unit 4, as shown in fig. 1, a pressurizing device 7 may be disposed between the inlet of the first filter unit 4 and the water inlet end 1, and the pressurizing device 7 may be disposed upstream of the sterilizing water generating unit 5 or downstream of the sterilizing water generating unit 5.

The water purification system may have a first state and a second state, and the water purification system may be switched from the first state to the second state, thereby sterilizing the first filter unit 4 and flushing the sterilized water out of the water purification system. In the first state, the sterilizing water generating unit 5 is turned on to generate sterilizing water.

In a possible embodiment, in the first state, the water inlet end 1 and the sterilizing water generating unit 5 may be in a disconnected state, and the waste water outlet of the first filter unit 4 and the waste water discharge end 2 are in a disconnected state. In this embodiment, the sterilizing water generating unit 5 continues to generate a large amount of sterilizing water in the sterilizing water generating unit 5, and in the second state, the sterilizing water effects sterilization of the first filter unit 4 and also sterilization of the piping downstream of the sterilizing water generating unit 5.

In another possible embodiment, in the first state, the water inlet end 1 and the sterilizing water generating unit 5 may be in a communicating state, and the waste water outlet of the first filter unit 4 and the waste water discharge end 2 are in a communicating state. In this embodiment, the sterilizing water generated by the sterilizing water generating unit 5 is directly taken into the first filter unit 4 by the water from the water source, thereby sterilizing the first filter unit 4, and simultaneously sterilizing the pipeline at the downstream of the sterilizing water generating unit 5, and after the sterilizing of the sterilizing water is completed, the sterilizing water is discharged from the waste water outlet of the first filter unit 4, and then discharged from the waste water discharge end 2 to the water purification system.

In the second state, the sterilizing water generating unit 5 is closed, the water inlet end 1 is in a communicating state with the sterilizing water generating unit 5, and the waste water outlet of the first filtering unit 4 is in a communicating state with the waste water discharge end 2. In the second state, water from the water supply is introduced from the water inlet port 1, and the sterilizing water in the sterilizing water generating unit 5 and the sterilizing water in the pipeline downstream of the sterilizing water generating unit 5 are discharged from the waste water discharge port 2 after passing through the first filtering unit 4. Alternatively, water of the water source is introduced from the water inlet port 1 through the second state, so that a large amount of sterilizing water generated in the sterilizing water generating unit 5 is introduced downstream of the sterilizing water generating unit 5 and into the first filtering unit 4, thereby sterilizing the downstream pipe of the sterilizing water generating unit 5 and the first filtering unit 4 in the course of discharging the sterilizing water from the waste water discharge end 2.

When the water purification system is normally operated to prepare filtered water, as shown in fig. 1, the first on-off valve 11 can be opened, the wastewater ratio function in the multifunctional valve unit 10 is enabled, the sterilizing water generating unit 5 is closed, water entering from the water inlet end 1 is introduced into the first filtering unit 4, the first filtering unit 4 filters raw water, so as to output filtered water, the filtered water is discharged from the filtered water outlet of the first filtering unit 4, and then the filtered water is output from the filtered water outlet end 3 to be discharged out of the water purification system for users to use; the waste water produced by the first filter unit 4 is discharged from the waste water outlet of the first filter unit 4, after which the waste water is discharged from the waste water discharge 2 out of the water purification system.

In the present application, a control method of a water purification system is proposed, which may include the steps of:

the sterilizing water generating unit 5 is turned on to generate sterilizing water, and the sterilizing water is discharged from the waste water outlet of the first filtering unit 4 through the inlet of the first filtering unit 4.

In the above steps, the sterilizing water generating unit 5 may be turned on, and for example, the electrolytic water unit may be turned on to hydrolyze water to generate sterilizing water having hypochlorite. As shown in fig. 1, the water inlet 1 can be controlled to be disconnected from the sterilizing water generating unit 5, i.e., the first opening/closing valve 11; the waste water outlet of the first filtering unit 4 is disconnected from the waste water discharging end 2, that is, the multifunctional valve unit 10 is in a disconnected state, so that the sterilizing water is flushed into the inlet of the first filtering unit 4 and discharged from the waste water outlet of the first filtering unit 4 through the subsequent steps. Or, the water inlet end 1 can be controlled to be communicated with the sterilizing water generating unit 5, namely, the first opening and closing valve 11 is opened; the waste water outlet of the first filtering unit 4 is communicated with the waste water discharge end 2, that is, the multifunctional valve unit 10 is in a complete communication state, so that the sterilizing water is instantly generated by the sterilizing water, and simultaneously the sterilizing water is introduced into the inlet of the first filtering unit 4 and discharged from the waste water outlet of the first filtering unit 4. The sterilization of the pipeline downstream of the first filter unit 4 and the sterilized water generating unit 5 can be realized by the above steps.

The sterilizing water generating unit 5 is controlled to be closed, and the water flowing in from the water inlet end 1 flows to the waste water outlet of the first filtering unit 4 through the inlet of the first filtering unit 4.

In the above-described step, as shown in fig. 1, the first opening and closing valve 11 is opened to place the multifunction valve unit 10 in a fully communicated state, so that the water flowing in from the water inlet port 1 flows to the waste water outlet port of the first filter unit 4 through the inlet port of the first filter unit 4 and is then discharged from the waste water discharge port 2. Residual sterilizing water in the water purification system can be flushed away in the whole process, and downstream pipelines of the sterilizing water generating unit 5 and the first filtering unit 4 can be sterilized in the flushing process.

As a possibility, as shown in fig. 4, the water purification system may include: a first conduit 6. One end of the first pipeline 6 can be communicated with the filtered water outlet of the first filtering unit 4 or the downstream thereof, and the other end of the first pipeline 6 can be communicated with the inlet of the sterilizing water generating unit 5. The first pipe 6, the sterilizing water generating unit 5 and the first filtering unit 4 can form a circulation waterway. The water purification system may include: and the pressurizing device 7 is arranged on the circulating water path, and the pressurizing device 7 is used for driving the water in the circulating water path to flow from the sterilizing water generating unit 5 to the inlet of the first filtering unit 4. Preferably, in order to increase the rate at which the water purification system produces filtered water during normal operation, the pressurising means 7 may be provided in the circulation circuit at a location other than the first conduit 6, for example upstream of the inlet of the first filter unit 4. Thus, by opening the pressurizing device 7, the pressure at the inlet of the first filtering unit 4 can be increased, so that the filtering rate of the first filtering unit 4 is increased, thereby increasing the filtered water outlet flow of the water purifying system. In the above embodiment, as shown in fig. 5, the water purification system may include: and a second filter unit 8, the second filter unit 8 being connected upstream of the sterilizing water generating unit 5, the other end of the first pipeline 6 being capable of communicating between an inlet of the sterilizing water generating unit 5 and an outlet of the second filter unit 8.

In order to prevent the water flowing from the water inlet end 1 from directly flowing to the filtered water outlet through the first pipeline 6, as shown in fig. 4 and 5, a check valve 61 which is communicated from the filtered water outlet of the first filter unit 4 to the inlet of the sterilized water generating unit 5 may be provided on the first pipeline 6.

When the first pipe 6 is present in the water purification system, the water purification system may have a third state. In a third state, as shown in fig. 1, the pressure intensifying means 7 is opened and the waste water outlet of the first filter unit 4 is disconnected from the waste water discharge end 2. In this state, if the water output mechanism to which the filtered water outlet port 3 is connected is closed, the opening and closing of the water inlet port 1 may not be controlled, otherwise, the first opening and closing valve 11 at the water inlet port 1 may be closed.

In the above embodiment, as shown in fig. 1, the sterilizing water generating unit 5 may have a housing chamber in which the sterilizing water generating unit 5 can generate sterilizing water. The water purification system can be switched from the first state to the third state and then from the third state to the second state. In the third state, the pressurizing device 7 drives water to circulate in the circulation water path, and the sterilizing water generating unit 5 may be turned off or on. The water in the circulating water path can be changed into filtered water after being filtered by the first filter means 4, and depending on the concentration of the sterilized water produced by the sterilized water producing means 5, the filtered water may contain a part of the sterilizing substance, for example, a small amount of hypochlorite (CLO-ion). After a certain period of time of circulation, the entire receiving chamber of the sterilizing water producing unit 5 will be filled with filtered water. Then, when the water purification system is switched from the third state to the second state, the time that the water purification system is in the second state is controlled, the raw water input from the water inlet end 1 can push out and replace at least part of the filtered water filled in the sterilizing water generating unit 5, the filtered water in the sterilizing water generating unit 5 can be input into the first filtering unit 4, so that the raw water side of the filtering membrane in the first filtering unit 4 is washed, the water with higher TDS concentration at the raw water side is replaced, the raw water side of the filtering membrane in the first filtering unit 4 is the filtered water, the long-time nonuse is avoided, and the dissolved matters in the raw water side of the filtering membrane slowly permeate through the filtering membrane. Thus, when the water purification system is not used for a long time, the problem that the TDS concentration of the first cup of filtered water output when the water purification system is used again is higher is avoided.

In the control method of the water purification system provided by the application, the following steps can be included:

after the sterilizing water flows into the inlet of the first filter unit 4, before the sterilizing water generating unit 5 is controlled to be turned off, the waste water outlet of the first filter unit 4 may be controlled to be disconnected from the waste water discharge end 2, and the pressurizing means 7 may be turned on so that the filtered water flowing out from the filtered water outlet of the first filter unit 4 is returned to the inlet of the sterilizing water generating unit 5 through the first pipe 6.

In the above steps, as shown in fig. 4 and 5, the multifunction valve unit 10 may be controlled to be in the off state, and the pressure intensifying apparatus 7 may be opened. If the water outlet means to which the filtered water outlet port 3 is connected is not closed, the first opening and closing valve 11 at the water inlet port 1 is closed. In this way, the filtered water flowing out of the filtered water outlet of the first filter unit 4 can be made to flow back to the inlet of the sterilizing water generating unit 5 through the first pipeline 6 to flow into the accommodating chamber of the sterilizing water generating unit 5. During this time, the sterilizing water generating unit 5 may be turned off. After a certain period of circulation, the sterilizing water producing unit 5 can be filled with filtered water.

In the following steps, as shown in fig. 4 and 5, the sterilizing water generating unit 5 is controlled to be turned off, and the water flowing from the water inlet end 1 flows to the waste water outlet of the first filter unit 4 through the inlet of the first filter unit 4, so that the filtered water in the accommodating chamber of the sterilizing water generating unit 5 replaces the water in the first filter unit 4, and not only the raw water side of the filtering membrane in the first filter unit 4 can be washed by the filtered water, but also the water with higher TDS concentration on the raw water side can be replaced, so that the raw water side of the filtering membrane in the first filter unit 4 is the filtered water.

As a practical matter, as shown in fig. 6 to 8, the water purification system may include: a second filter unit 8. The second filter unit 8 may be connected between the inlet of the first filter unit 4 and the water inlet end 1. The second filtering unit 8 comprises a pretreatment filtering unit which is used for pretreating water of a water source, effectively removing organic matters, impurities and other substances with larger particle sizes in the water, and also has the functions of decoloring, removing peculiar smell and the like. For example, the front filter element may be an activated carbon filter element or a PP (melt blown) filter element, or may also be a composite filter element, such as a PP (melt blown)/C (carbon) composite filter element.

In the above embodiment, as shown in fig. 6, one end of the first pipeline 6 of the water purification system can communicate with the filtered water outlet of the first filter unit 4, and the other end of the first pipeline 6 can communicate with the upstream of the inlet of the second filter unit 8. Thus, at least the first pipe 6, the second filter unit 8 and the first filter unit 4 can form a circulation water circuit. The circulating water path is provided with a supercharging device 7, and the supercharging device 7 is used for driving water in the circulating water path to flow from the sterilizing water generating unit 5 to the inlet of the first filtering unit 4.

In the above structure, the water purification system may also have a first state, a second state, and a third state. The water purification system can be switched from the first state to the third state and then switched from the third state to the second state.

Since the second filtering unit 8 is connected between the inlet of the first filtering unit 4 and the water inlet end 1, in a possible embodiment, as shown in fig. 6, the second filtering unit 8 may be disposed upstream of the sterilizing water generating unit 5, and thus at least the first pipe 6, the second filtering unit 8, the sterilizing water generating unit 5 and the first filtering unit 4 can form a circulating water circuit. In this embodiment, the sterilizing water generating unit 5 may not have a housing chamber, the second filter unit 8 may itself have a housing chamber for housing a filter material therein to filter water, and the pressurizing device 7 drives water to circulate in the circulation water path when the water purification system is in the third state, and during this process, the sterilizing water generating unit 5 may be turned off or turned on. The water in the circulating water path can become filtered water after being filtered by the first filter unit 4, and the whole accommodating cavity of the second filter unit 8 can be filled with the filtered water after a certain period of time of circulation. Then, when the water purification system is switched from the third state to the second state, by controlling the time of the water purification system in the second state, the raw water input from the water inlet end 1 can push out and replace at least part of the filtered water filled in the second filtering unit 8, and the filtered water in the second filtering unit 8 can be input into the first filtering unit 4, so that the raw water side of the filtering membrane in the first filtering unit 4 is washed, and the water with higher TDS concentration on the raw water side is replaced, so that the raw water side of the filtering membrane in the first filtering unit 4 is the filtered water. Meanwhile, if the sterilizing water generating unit 5 is turned on or the sterilizing water generating unit 5 generates sterilizing water having a sufficient concentration, the filtered water passing through the first filtering unit may contain a part of sterilizing material, which can also sterilize the second filtering unit 8 to some extent when it is circulated into the second filtering unit 8 through the first pipe 6.

In this embodiment, the pressure increasing device 7 may be preferably provided between the sterilizing water producing unit 5 and the second filter unit 8, and since the pressure increasing device 7 is located upstream of the sterilizing water producing unit 5, the sterilizing water produced immediately by the sterilizing water producing unit 5 does not damage the components inside the pressure increasing device 7, which may increase the service life of the pressure increasing device 7.

In another possible embodiment, as shown in fig. 7 and 8, the second filter unit 8 may be disposed between the outlet of the sterilizing water generating unit 5 and the inlet of the first filter unit 4. In one mode, as shown in fig. 7, the other end of the first conduit 6 can communicate with the inlet of the sterilizing water generating unit 5. When the water purification system is in the first state, the water purification system can generate sterilizing water and simultaneously introduce water into the water inlet end 1, thereby completing the sterilization of the second filter unit 8. The filtered water passing through the second filtering unit 8 may contain a part of sterilizing material according to the concentration of the sterilizing water generated by the sterilizing water generating unit 5, and it may also sterilize the first filtering unit 4 to a certain extent after passing through the second filtering unit 8. For example, the sterilizing water generating unit 5 may generate sterilizing water to sterilize the second filter unit 8, and the sterilizing water may pass through the second filter unit 8 to sterilize the first filter unit 4 and then be discharged from the waste water outlet of the first filter unit 4. When the water purification system is in the first state, the water purification system can also continuously generate the sterilizing water in the sterilizing water generating unit 5, and when the water purification system is in the third state, the supercharging device 7 drives the water to circularly flow in the circulating water channel, and in the process, the sterilizing water generating unit 5 can be closed or opened. The sterilizing water in the sterilizing water generating unit 5 flows in the circulation water path to sterilize the second filtering unit 8 and the first filtering unit 4. The water in the circulating water path can become filtered water after being filtered by the first filter unit 4, and the whole accommodating cavity of the second filter unit 8 can be filled with the filtered water after a certain period of time of circulation. If the sterilizing water producing unit 5 is turned on, a small amount of sterilizing material is contained in the filtered water, and it is generally selected not to turn on the sterilizing water producing unit 5. Then, the water purification system is in the second state again, and by controlling the time of the water purification system in the second state, the raw water input from the water inlet end 1 can push out and replace at least part of the filtered water filled in the second filtering unit 8, and the filtered water in the second filtering unit 8 can be input into the first filtering unit 4, so that the raw water side of the filtering membrane in the first filtering unit 4 is washed, and the water with higher TDS concentration at the raw water side is replaced, so that the raw water side of the filtering membrane in the first filtering unit 4 is the filtered water.

In the case where the second filter unit 8 is provided between the outlet of the sterilizing water generating unit 5 and the inlet of the first filter unit 4, in another manner, as shown in fig. 8, the other end of the first pipe 6 can communicate with the inlet of the second filter unit 8. In this embodiment, when the water purification system is in the first state, the sterilizing water generating unit 5 is turned on to generate sterilizing water, the water inlet port 1 is in a communicating state with the sterilizing water generating unit 5, and the wastewater outlet port of the first filter unit 4 is in a communicating state with the wastewater discharge port 2, so that the second filter unit 8 is sterilized by the sterilizing water generated by the sterilizing water generating unit 5. The filtered water passing through the second filtering unit 8 may contain a part of sterilizing material according to the concentration of the sterilizing water generated by the sterilizing water generating unit 5, and it may also sterilize the first filtering unit 4 to a certain extent after passing through the second filtering unit 8. When the water purification system is in the third state, the sterilizing water generating unit 5 may be turned off, the water flows in the circulation water path, the filtered water produced by the first filtering unit 4 is returned to the second filtering unit 8, and the receiving chamber of the second filtering unit 8 is filled with the filtered water. Then, the water purification system is in the second state again, and by controlling the time of the water purification system in the second state, the raw water input from the water inlet end 1 can push out and replace at least part of the filtered water filled in the second filtering unit 8, and the filtered water in the second filtering unit 8 can be input into the first filtering unit 4, so that the raw water side of the filtering membrane in the first filtering unit 4 is washed, and the water with higher TDS concentration at the raw water side is replaced, so that the raw water side of the filtering membrane in the first filtering unit 4 is the filtered water.

In the control method of the water purification system proposed in the present application, when the other end of the first pipeline 6 can communicate with the upstream of the inlet of the second filter unit 8, the following steps may be included: after the sterilizing water flows into the inlet of the first filter unit 4, before the sterilizing water generating unit 5 is controlled to be turned off, the waste water outlet of the first filter unit 4 is controlled to be disconnected from the waste water discharge end 2, and the pressurizing means 7 is turned on so that the filtered water flowing out of the filtered water outlet of the first filter unit 4 is returned to the second filter unit 8 through the first pipe 6.

Then, the water inlet end 1 is controlled to be communicated with the sterilized water generating unit 5, the waste water outlet of the first filtering unit 4 is controlled to be communicated with the waste water discharge end 2, the sterilized water generating unit 5 is closed, and the water in the first filtering unit 4 is replaced by the filtered water in the second filtering unit 8 by controlling the time that the water purifying system is in the second state. The time that the water purification system is in the second state cannot be too long, otherwise, the raw water flowing in from the water inlet end 1 can continuously flow into the first filtering unit 4 after filling the second filtering unit 8, and the replaced filtered water in the first filtering unit 4 is flushed away again.

As a practical matter, as shown in fig. 4 to 8, the water purification system may include: and a third filter unit 9 connected between the filtered water outlet of the first filter unit 4 and the filtered water outlet end 3. The third filtering unit 9 may include a post-filtering unit, which is mainly used to improve the taste of the filtered water and remove the odor, and certainly, may also remove organic matters, residual chlorine and other radioactive substances in the water to a certain extent, and has a decoloring effect, which may be determined by the filtering material used in the post-filtering unit. One end of the first conduit 6 can communicate with the outlet of the third filter unit 9. Thus, when the water purification system is in the third state, the third filter unit 9 may be included in the circulation water path, and the sterilizing water generated by the sterilizing water generating unit 5 may also pass through the third filter unit 9 after being filtered by the first filter unit 4, so that the third filter unit 9 can be sterilized to some extent. In other possible embodiments, one end of the first circuit 6 can also communicate with the inlet of the third filtering unit 9.

In the control method of the water purification system, the returning of the filtered water flowing out of the filtered water outlet of the first filtering unit 4 to the second filtering unit 8 through the first pipe 6 may include: the water flowing out from the filtered water outlet of the first filtering unit 4 passes through the third filtering unit 9 and then returns to the second filtering unit 8 through the first pipeline 6.

The utility model can be switched from the first state to the third state and then from the third state to the second state through the water purification system, in the whole process, not only the sterilization of the first filter unit 4 is mainly realized, but also the sterilization of the third filter unit 9 and the sterilization of the second filter unit 8 are realized, and the filtered water filtered by the first filter unit 4 can be stored by the second filter unit 8 or the sterilized water producing unit 5 in the third state, so that the raw water side of the filtration membrane of the first filtration unit 4 is washed with the part of the filtered water in the second state, and the water with higher TDS concentration on the raw water side of the filtering membrane is replaced, so that the raw water side of the filtering membrane in the first filtering unit 4 is filtered water, and thus, when the water purification system is not used for a long time, the problem that the TDS concentration of the first cup of filtered water output when the water purification system is used again is higher can not occur.

It should be noted that, when the water purification system is used for water production, due to the presence of at least the first filter unit 4, and possibly the third filter unit 9 and the second filter unit 8, the filtered water containing a small amount of sterilizing substances in the accommodating chamber is filtered again, so that the sterilizing substances contained in the filtered water finally outputted from the filtered water outlet end become lower and can be basically ignored, and the use of users is not affected.

All articles and references disclosed, including patent applications and publications, are hereby incorporated by reference for all purposes. The term "consisting essentially of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional. A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.

The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. The utility model provides a water purification system which characterized in that, water purification system includes:

a water inlet end;

a waste water discharge end;

a filtered water outlet end;

2. The water purification system of claim 1, further comprising:

3. The water purification system of claim 2, wherein the first pipeline, the sterilizing water generating unit and the first filtering unit are capable of forming a circulating water circuit;

4. The water purification system of claim 2, wherein the sterilizing water generating unit has a receiving chamber in which the sterilizing water generating unit can generate sterilizing water.

5. The water purification system of claim 1, further comprising: the second filtering unit is connected between the inlet of the first filtering unit and the water inlet end and comprises a pretreatment filtering unit.

6. The water purification system of claim 1 or 5, wherein the water purification system has a first state and a second state: in a first state, the sterilizing water generating unit is turned on to generate sterilizing water;

7. The water purification system of claim 6, wherein in a first state, the water inlet end is disconnected from the sterilizing water generating unit, and the wastewater outlet of the first filter unit is disconnected from the wastewater discharge end; or, in the first state, the water inlet end is communicated with the sterilizing water generating unit, and the waste water outlet of the first filtering unit is communicated with the waste water discharge end.

8. The water purification system of claim 5, further comprising:

9. The water purification system of claim 8, wherein at least the first pipe, the second filter unit and the first filter unit are capable of forming a circulation waterway;

10. The water purification system of claim 3 or 9, wherein the water purification system has a first state, a second state and a third state: in a first state, the sterilizing water generating unit is turned on to generate sterilizing water;

11. The water purification system of claim 10, wherein in a first state, the water inlet end is disconnected from the sterilizing water generating unit, and the wastewater outlet of the first filter unit is disconnected from the wastewater discharge end; or, in the first state, the water inlet end is communicated with the sterilizing water generating unit, and the waste water outlet of the first filtering unit is communicated with the waste water discharge end.

12. The water purification system of claim 10, wherein when the water purification system comprises a second filter unit, the second filter unit is disposed upstream of the sterilized water generating unit, and at least the first pipe, the second filter unit, the sterilized water generating unit, and the first filter unit can form a circulation water path.

13. The water purification system of claim 10, wherein when the water purification system includes a second filter unit, the second filter unit is disposed between an outlet of the sterilizing water generating unit and an inlet of the first filter unit, and the other end of the first pipe is communicable with the inlet of the sterilizing water generating unit or the other end of the first pipe is communicable with the inlet of the second filter unit.

14. The water purification system of claim 10, wherein the water purification system is switchable from the first state to the third state and then from the third state to the second state.

15. The water purification system of claim 1, wherein a multifunctional valve unit having a waste water ratio function and an on-off function is connected between the waste water discharge end and the waste water outlet of the first filter unit.

16. The water purification system of claim 1, wherein the first filter unit comprises at least one of: a reverse osmosis membrane filtration unit and a nanofiltration membrane filtration unit.

17. The water purification system of claim 2 or 8, further comprising: and the third filtering unit is connected between the filtered water outlet of the first filtering unit and the filtered water outlet end and comprises a post-filtering unit, and one end of the first pipeline can be communicated with an outlet of the third filtering unit.

18. The water purification system of claim 2 or 8, wherein the first pipeline is provided with a check valve communicated from the filtered water outlet of the first filtering unit to the inlet of the sterilized water generating unit.

19. The water purification system of claim 1, wherein the sterilizing water generating unit comprises an electrolytic water unit capable of generating sterilizing water having hypochlorite.

20. The water purification system of claim 1, wherein a first open-close valve is provided at the water inlet end.