Backwash zero-stale-water water purification system

Abstract

The utility model discloses a backwash zero stale water purification system, including preposed filter element and membrane filter element, preposed filter element includes first water inlet and first water outlet, the first water inlet is communicated with water inlet pipe and blow-off pipe, water inlet pipe is equipped with first valve, blow-off pipe is equipped with second valve, membrane filter element includes second water inlet, clean water mouth and waste water mouth, the second water inlet is communicated with the first water outlet, the purified water port is communicated with a water storage barrel, and the water storage barrel is used for receiving and storing purified water flowing out of the purified water port of the membrane filter element, so that when the second valve is opened, the purified water in the water storage barrel is used for backwashing the membrane filter element and the front filter element and is discharged through a blow-off pipe; the purified water backwash can wash out impurity microorganisms and the like intercepted in the front filter element without remaining in the filter element, so that the problem that the filter element is blocked and needs to be frequently replaced is solved, the problem of secondary pollution caused by reproduction and fermentation of the substances in the filter element can be prevented, and the water quality is prevented from influencing the water health of a user.

Description

Technical Field

[0001] The utility model relates to the technical field of water purifiers, in particular to a backwashing zero-stale water purification system. Background Art

[0002] At present, although water purifiers have entered thousands of households, they still face many difficult problems. Generally, water purifiers are multi-stage filtration. The raw water must first pass through the pre-filter to intercept the sediment, impurities, microorganisms, etc., and then pass through the membrane filter. In this way, the purified water or pure water can be drunk directly. However, in actual use, traditional water purifiers have three pain points:

[0003] 1. The pre-filter is easy to clog. In areas with poor water quality, it needs to be replaced frequently, which is not only costly but also troublesome.

[0004] 2. The intercepted sediment, impurities, microorganisms, etc. will multiply and ferment in the filter element, causing the filter element to become fishy and smelly after a short period of use, resulting in secondary pollution and affecting people's water health;

[0005] 3. After the water purifier is shut down, the high-concentration ions on the concentrated water side of the reverse osmosis membrane will penetrate into the purified water side, causing the next time you drink water with a high ion concentration, which is the so-called stale water, and will also affect people's health when using water. Utility Model Content

[0006] The utility model aims to provide a backwashing zero stale water purification system, aiming to at least solve one of the technical problems existing in the prior art.

[0007] In order to achieve the above-mentioned purpose, the technical solution of the utility model provides a backwash zero stale water purification system, comprising:

[0008] A pre-filter element, comprising a first water inlet and a first water outlet, wherein the first water inlet is connected to a water inlet pipe and a sewage pipe, the water inlet pipe is provided with a first valve, and the sewage pipe is provided with a second valve; and

[0009] The membrane filter element comprises a second water inlet, a clean water outlet and a waste water outlet, wherein the second water inlet is connected to the first water outlet, and the clean water outlet is connected to a water storage barrel, and the water storage barrel is used to receive and store the clean water flowing out of the clean water outlet of the membrane filter element, so that when the second valve is opened, the clean water in the water storage barrel can backwash the membrane filter element and the pre-filter element and be discharged through the drain pipe.

[0010] Furthermore, it also includes a backwash pipeline, one end of which is connected to the clean water port, and the other end of which is connected to the waste water port, and the backwash pipeline is provided with a one-way valve to transport the clean water in the water storage tank to the waste water port of the membrane filter element through the backwash pipeline, thereby backwashing the membrane filter element and the pre-filter element and discharging them through the drain pipe.

[0011] Furthermore, it also includes a waste water pipe, which is connected to the waste water outlet and is provided with a waste water ratio.

[0012] Furthermore, the waste water pipe is provided with a third valve.

[0013] Furthermore, it also includes a fourth valve, the clean water outlet of the membrane filter element is connected to the water storage tank through a clean water pipeline, one end of the backwash pipeline is connected to the clean water outlet through the clean water pipeline, and the connecting position between one end of the backwash pipeline and the clean water pipeline serves as the first intersection, the fourth valve is arranged on the clean water pipeline, and the fourth valve is located between the first intersection and the water storage tank.

[0014] Furthermore, it also includes a pressure sensor, which is used to detect the water pressure value in the water storage barrel.

[0015] Furthermore, it also includes a controller, the second valve is a solenoid valve, and the controller is electrically connected to the second valve, so that the controller controls the second valve to open or close when the water pressure value in the water storage tank reaches a preset value detected by the pressure sensor.

[0016] Furthermore, it also includes a water pump, which is arranged on the water inlet pipe.

[0017] Furthermore, the first valve is a solenoid valve, and the controller is electrically connected to the first valve so as to control the first valve to be opened or closed through the controller.

[0018] In addition, the technical solution of the utility model provides a backwash zero stale water purification system, comprising:

[0019] A pre-filter element, comprising a first water inlet and a first water outlet, wherein the first water inlet is connected to a water inlet pipe and a sewage pipe, the water inlet pipe is provided with a first valve, and the sewage pipe is provided with a second valve; and

[0020] The membrane filter element comprises a second water inlet, a clean water outlet and a waste water outlet, wherein the second water inlet is connected to the first water outlet, the clean water outlet is connected to a water storage tank, and the water storage tank is used to receive and store clean water flowing out of the clean water outlet of the membrane filter element;

[0021] A backwash pipeline, one end of which is connected to the clean water port, and the other end of which is connected to the waste water port, and a one-way valve is provided on the backwash pipeline to allow the clean water in the water storage tank to flow into the waste water port of the membrane filter element through the backwash pipeline;

[0022] A wastewater pipe, one end of which is connected to the other end of the backwash pipeline, and the other end of the wastewater pipe is provided with a wastewater ratio and / or a third valve.

[0023] A pressure sensor, the pressure sensor is used to detect the water pressure value in the water storage tank; and

[0024] A controller is electrically connected to the second valve, so that the second valve is controlled to open by the controller so that the clean water in the water storage barrel backwashes the membrane filter element and the pre-filter element and is discharged through the sewage pipe.

[0025] It can be seen from the above technical scheme that the backwashing zero-stale water purification system of the utility model is connected to a drain pipe at the first water inlet of the pre-filter element, and the drain pipe is provided with a second valve. When the membrane filter element and the pre-filter element need to be backwashed, the second valve is opened so that the clean water in the water storage tank backwashes the membrane filter element and the pre-filter element in turn and is discharged through the drain pipe, so that the impurities and microorganisms intercepted in the pre-filter element can be flushed out without remaining in the filter element, which not only solves the problem of frequent replacement of the filter element due to clogging, but also prevents these substances from multiplying and fermenting in the filter element to cause secondary pollution. After the backwashing of the clean water is completed, the membrane filter element and the pre-filter element are both immersed in the clean water. The purity of the clean water is relatively high and basically does not provide nutrients to the microorganisms. It can effectively inhibit the growth of microorganisms and ensure the health of users' water. Since the ion concentration of the clean water is relatively low, the clean water can also dissolve the high-concentration ion crystals adhered to the membrane filter element to prevent membrane clogging, so as to play a role in protecting the membrane, thereby prolonging the service life of the membrane filter element and the pre-filter element.

[0026] In order to make the technical concept and other purposes, advantages, features and functions of the present invention more clearly understood, preferred embodiments will be specifically cited in the following specific implementation manner and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1This is a structural principle diagram of a backwash zero-stale water purification system provided in an embodiment of the present application.

[0029] The above drawings include the following reference numerals:

[0030] 100, pre-filter element; 110, first water inlet; 120, first water outlet;

[0031] 200, membrane filter element; 210, second water inlet; 220, clean water outlet; 230, waste water outlet;

[0032] 300, backwash pipeline; 310, one-way valve; 320, first intersection; 330, second intersection;

[0033] 400, water inlet pipe; 410, first valve; 500, sewage pipe; 510, second valve;

[0034] 600, waste water pipe; 610, waste water ratio; 620, third valve;

[0035] 700, water purification pipeline; 710, water storage tank; 720, pressure sensor; 730, fourth valve; 800, water pump. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0037] See also Figure 1 The present embodiment provides a backwash zero-stale water purification system, including a pre-filter element 100 and a membrane filter element 200, the pre-filter element 100 includes a first water inlet 110 and a first water outlet 120, the first water inlet 110 is connected to a water inlet pipe 400 and a sewage pipe 500, the water inlet pipe 400 is provided with a first valve 410, the sewage pipe 500 is provided with a second valve 510, the membrane filter element 200 includes a second water inlet 210, a clean water outlet 220 and a waste water outlet 230 The second water inlet 210 is connected to the first water outlet 120, and the clean water outlet 220 is connected to the water storage tank 710. The water storage tank 710 is used to receive and store the clean water flowing out of the clean water outlet 220 of the membrane filter element 200, so that when the second valve 510 is opened, the clean water in the water storage tank 710 backwashes the membrane filter element 200 and the pre-filter element 100 and is discharged to the outside of the water purification system through the drain pipe 500, thereby realizing the backwashing of the membrane filter element 200 and the pre-filter element 100 with clean water.

[0038] It can be seen that the backwashing zero-stale water purification system of this embodiment is connected to a drain pipe 500 at the first water inlet 110 of the pre-filter element 100, and the drain pipe 500 is provided with a second valve 510. When it is necessary to backwash the membrane filter element 200 and the pre-filter element 100, the second valve 510 is opened so that the clean water in the water storage tank 710 backwashes the membrane filter element 200 and the pre-filter element 100 in turn and is discharged through the drain pipe 500. The clean water backwashing can flush out the impurities and microorganisms intercepted in the pre-filter element 100 without remaining in the filter element, which solves the problem of filter element blockage. The problem of frequent replacement of plugs can be solved, and the problem of secondary pollution caused by the reproduction and fermentation of these substances in the filter element can be prevented. After the backwash of purified water is completed, the membrane filter element 200 and the pre-filter element 100 are both immersed in purified water. The purified water has a high purity and basically does not provide nutrients to microorganisms. It can effectively inhibit the growth of microorganisms and ensure the health of users' water. Since the ion concentration of purified water is low, the purified water can also dissolve the high-concentration ion crystals adhered to the membrane filter element 200 to prevent membrane clogging, so as to protect the membrane and increase the service life of the membrane filter element 200 and the pre-filter element 100.

[0039] In this embodiment, the water purification system also includes a backwash pipeline 300, one end of the backwash pipeline 300 is connected to the clean water port 220, and the other end is connected to the waste water port 230, and the backwash pipeline 300 is provided with a one-way valve 310 to transport the clean water in the water storage tank 710 to the waste water port 230 of the membrane filter element 200 through the backwash pipeline 300, thereby backwashing the membrane filter element 200 and the pre-filter element 100 and discharging them through the drain pipe 500.

[0040] Specifically, the water purification system further includes a wastewater pipe 600, which is connected to the wastewater port 230, and the wastewater pipe 600 is provided with a wastewater ratio 610, which is a wastewater proportional valve for adjusting the wastewater discharge amount.

[0041] Furthermore, the wastewater pipe 600 is provided with a third valve 620 , and the third valve 620 may be a solenoid valve, so that the wastewater in the membrane filter element 200 is discharged through the wastewater pipe 600 when the third valve 620 is opened.

[0042] In this embodiment, the water purification system further includes a fourth valve 730, the clean water port 220 of the membrane filter element 200 is connected to the water storage tank 710 through the clean water pipeline 700, one end of the backwash pipeline 300 is connected to the clean water port 220 through the clean water pipeline 700, and the connecting position between one end of the backwash pipeline 300 and the clean water pipeline 700 is used as the first intersection 320, the fourth valve 730 is arranged on the clean water pipeline 700, and the fourth valve 730 is located at the first intersection 320 and the water storage tank 710, the fourth valve 730 can be a solenoid valve. When the water purification system produces water, the fourth valve 730 is opened so that the clean water flowing out of the clean water outlet 220 of the membrane filter element 200 flows into the water storage tank 710 through the clean water pipeline 700. When the clean water is backwashed, the fourth valve 730 is opened so that the clean water in the water storage tank 710 is backwashed to the membrane filter element 200 and the pre-filter element 100 through the clean water pipeline 700 and the backwash pipeline 300 respectively, and discharged through the sewage pipe 500.

[0043] Specifically, the other end of the backwash pipeline 300 is connected to the wastewater port 230 through the wastewater pipe 600, and the connecting position between the other end of the backwash pipeline 300 and the wastewater pipe 600 serves as the second intersection 330, and the second intersection 330 is located between the wastewater port 230 and the wastewater ratio 610. As an optional implementation scheme, the third valve 620 is arranged between the second intersection 330 and the wastewater ratio 610 or the wastewater ratio 610 is arranged between the second intersection 330 and the third valve 620.

[0044] Furthermore, the water purification system also includes a pressure sensor 720, which is used to detect the water pressure value in the water storage barrel 710. The pressure sensor 720 is located between the water purification port 220 of the membrane filter element 200 and the fourth valve 730.

[0045] In this embodiment, the water purification system also includes a controller, and the second valve 510 is a solenoid valve. The controller is electrically connected to the second valve 510 so that the controller controls the second valve 510 to open or close when the water pressure value in the water storage tank 710 reaches a preset value detected by the pressure sensor 720.

[0046] Specifically, the water purification system also includes a water pump 800, which is arranged on the water inlet pipe 400, and the water pump 800 is located between the first valve 410 and the pre-filter element 100, so that the raw water is drawn by the water pump 800 and enters the pre-filter element 100 and the membrane filter element 200 in turn for filtration and water production.

[0047] Furthermore, the first valve 410 is a solenoid valve, and the controller is electrically connected to the first valve 410 so as to control the first valve 410 to be opened or closed through the controller.

[0048] When the water purification system produces water, the controller controls the first valve 410, the third valve 620 and the fourth valve 730 to open, the second valve 510 is in a closed state, the water pump 800 draws raw water into the pre-filter element 100, and after being filtered by the pre-filter element 100, it flows into the membrane filter element 200, and the clean water after being filtered by the membrane filter element 200 flows into the water storage tank 710 for storage, and the waste water in the membrane filter element 200 is discharged through the waste water pipe 600. The waste water pressure is generally greater than the clean water pressure, but the backwashing A one-way valve 310 is provided on the pipeline 300, so that waste water will not flow into the clean water pipeline 700 through the backwash pipeline 300. The pressure of the water storage tank 710 gradually increases with the injection of clean water. When the pressure sensor 720 detects that the pressure reaches a preset value, the controller controls the first valve 410, the third valve 620 and the water pump 800 to close, and controls the second valve 510 and the fourth valve 730 to open. At this time, the clean water in the water storage tank 710 flows through the clean water pipeline 700 and the backwash pipeline 300 respectively. 00 flows into the clean water port 220 and the waste water port 230 of the membrane filter element 200, and then flows into the membrane filter element 200 for flushing in two clean water backwashing routes. The membrane filter element 200 is flushed from two directions at the same time, which can well peel off the residue on the membrane filter element 200, prevent the membrane from being blocked, and effectively improve the flushing effect of the membrane filter element 200. Then, it flows into the first water outlet 120 of the pre-filter element 100 through the second water inlet 210 of the membrane filter element 200, and then flows into the pre-filter element 100, thereby The pre-filter element 100 is backwashed and discharged through the drain pipe 500. The entire clean water backwashing process can discharge the mud, impurities, microorganisms intercepted in the pre-filter element 100 and the stale water in the membrane filter element 200 through the drain pipe 500. When the water pressure in the water storage tank 710 reaches the preset condition, the second valve 510 is controlled to close and the clean water backwashing is stopped. At this time, the pre-filter element 100 and the membrane filter element 200 are completely soaked in clean water, and the remaining clean water in the water storage tank 710 is for users' daily use.

[0049] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0050] The backwashing zero-stale water purification system of the utility model is connected to a drain pipe 500 at the first water inlet 110 of the pre-filter element 100, and the drain pipe 500 is provided with a second valve 510. When it is necessary to backwash the membrane filter element 200 and the pre-filter element 100, the second valve 510 is opened so that the clean water in the water storage tank 710 backwashes the membrane filter element 200 and the pre-filter element 100 in turn and is discharged through the drain pipe 500, so that the impurities and microorganisms intercepted in the pre-filter element 100 can be washed out without remaining in the filter element, which solves the problem of frequent blockage of the filter element. The problem of replacement can be avoided, and the problem of secondary pollution caused by the reproduction and fermentation of these substances in the filter element can be prevented. After the backwash of purified water is completed, the membrane filter element 200 and the pre-filter element 100 are both immersed in purified water. The high purity of purified water basically does not provide nutrients to microorganisms, which can effectively inhibit the growth of microorganisms and ensure the health of users' water. Since the ion concentration of purified water is low, the purified water can also dissolve the high-concentration ion crystals adhered to the membrane filter element 200 to prevent membrane clogging, so as to protect the membrane and increase the service life of the membrane filter element 200 and the pre-filter element 100.

[0051] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0052] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "connected", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0053] Certain words are used in the specification and claims of this utility model to refer to specific components. Those with ordinary knowledge in the art should understand that manufacturers may refer to the same components with different names, and this document does not intend to distinguish between components with the same functions but different names. In the following specification and patent scope, the words "comprise", "have" and "include" are open words, and therefore should be interpreted as "including but not limited to".

[0054] In addition, it should be noted that in the description of the present invention, the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0055] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A backwash zero stale water purification system, characterized in that: include: A pre-filter element, comprising a first water inlet and a first water outlet, wherein the first water inlet is connected to a water inlet pipe and a sewage pipe, the water inlet pipe is provided with a first valve, and the sewage pipe is provided with a second valve; and The membrane filter element comprises a second water inlet, a clean water outlet and a waste water outlet, wherein the second water inlet is connected to the first water outlet, and the clean water outlet is connected to a water storage barrel, and the water storage barrel is used to receive and store the clean water flowing out of the clean water outlet of the membrane filter element, so that when the second valve is opened, the clean water in the water storage barrel can backwash the membrane filter element and the pre-filter element and be discharged through the drain pipe.

2. The backwash zero stale water purification system according to claim 1 is characterized in that: It also includes a backwash pipeline, one end of which is connected to the clean water outlet, and the other end of which is connected to the waste water outlet, and the backwash pipeline is provided with a one-way valve to transport the clean water in the water storage tank to the waste water outlet of the membrane filter element through the backwash pipeline, thereby backwashing the membrane filter element and the pre-filter element and discharging them through the drain pipe.

3. The backwash zero stale water purification system according to claim 1 is characterized in that: It also includes a waste water pipe, which is connected to the waste water port and is provided with a waste water ratio.

4. The backwash zero stale water purification system according to claim 3 is characterized in that: The waste water pipe is provided with a third valve.

5. The backwash zero stale water purification system according to claim 2, characterized in that: It also includes a fourth valve, the clean water outlet of the membrane filter element is connected to the water storage tank through a clean water pipeline, one end of the backwash pipeline is connected to the clean water outlet through the clean water pipeline, and the connecting position between one end of the backwash pipeline and the clean water pipeline serves as a first intersection, the fourth valve is arranged on the clean water pipeline, and the fourth valve is located between the first intersection and the water storage tank.

6. The backwash zero stale water purification system according to any one of claims 1 to 4, characterized in that: It also includes a pressure sensor, which is used to detect the water pressure value in the water storage barrel.

7. The backwash zero stale water purification system according to claim 6, characterized in that: It also includes a controller, the second valve is a solenoid valve, and the controller is electrically connected to the second valve so that the controller controls the second valve to open or close when the water pressure value in the water storage barrel reaches a preset value detected by the pressure sensor.

8. The backwash zero stale water purification system according to claim 7, characterized in that: It also includes a water pump, which is arranged on the water inlet pipe.

9. The backwash zero stale water purification system according to claim 7, characterized in that: The first valve is a solenoid valve, and the controller is electrically connected to the first valve so as to control the first valve to be opened or closed by the controller.

10. A backwash zero stale water purification system, characterized in that: include: A pre-filter element, comprising a first water inlet and a first water outlet, wherein the first water inlet is connected to a water inlet pipe and a sewage pipe, the water inlet pipe is provided with a first valve, and the sewage pipe is provided with a second valve; and The membrane filter element comprises a second water inlet, a clean water outlet and a waste water outlet, wherein the second water inlet is connected to the first water outlet, the clean water outlet is connected to a water storage tank, and the water storage tank is used to receive and store clean water flowing out of the clean water outlet of the membrane filter element; A backwash pipeline, one end of which is connected to the clean water port, and the other end of which is connected to the waste water port, and a one-way valve is provided on the backwash pipeline to allow the clean water in the water storage tank to flow into the waste water port of the membrane filter element through the backwash pipeline; A wastewater pipe, one end of which is connected to the other end of the backwash pipeline, and the other end of the wastewater pipe is provided with a wastewater ratio and / or a third valve; A pressure sensor, the pressure sensor is used to detect the water pressure value in the water storage tank; as well as A controller is electrically connected to the second valve, so that the second valve is controlled to open by the controller so that the clean water in the water storage barrel backwashes the membrane filter element and the pre-filter element and is discharged through the sewage pipe.

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