Water purification system
By combining the water purification system design with zero-die water function and backwash mode, the problem of increasing pure water concentration and frequent replacement of the front filter element after standby time in the reverse osmosis filter element water purifier is solved, achieving healthy water use and cost saving effects.
Patent Information
- Application Number
- CN202422157755.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-04
AI Technical Summary
After a long standby time of the existing reverse osmosis filter element water purifier, the water concentration on the pure water side increases, the initial water quality is poor, and frequent replacement of the front filter element increases user costs.
The water purification system design combines the zero-die water function and the front-mounted filter element backflush function, through the water circuit design of the water storage container and multiple control valves, the pure water recycling and the filter element backflush is realized, avoiding the increase in the pure water concentration and extending the filter element life.
Ensure healthy water use, reduce user maintenance costs, extend the service life of the front filter element, and improve the efficiency of the water purification system.
Smart Images
Figure CN223073972U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water purification equipment, in particular to a water purification system. Background Art
[0002] For some existing water purifiers with reverse osmosis filters, if they are in standby mode without making water for a long time, the concentrated water remaining on the waste water side of the reverse osmosis filter will osmose positively towards the pure water side, resulting in an increase in the water concentration on the pure water side. When the water is used again for the first time, the concentration of the initially discharged water is high. Generally, users will use this initial water without knowing it, which will affect the health of users when using water. In addition, a pre-filter is usually set upstream of the reverse osmosis filter, and the pre-filter is generally replaced every six months or one year, which undoubtedly increases the user's usage cost. Content of the Utility Model
[0003] The utility model aims to at least solve one of the above technical problems in the related art to a certain extent. For this purpose, the utility model provides a water purification system.
[0004] To achieve the above object, the technical solution of the utility model is as follows:
[0005] The water purification system according to the first aspect embodiment of the utility model includes:
[0006] An inlet water circuit, on which a first control valve, a pre-filter, a second control valve and a pressurizing device are sequentially installed;
[0007] A reverse osmosis filter, having a raw water end, a pure water end and a waste water end, the raw water end is connected to the downstream end of the inlet water circuit, and the waste water end is connected to a first waste water circuit;
[0008] A water usage circuit, on which a pressure detection mechanism is installed, and the upstream end of the water usage circuit is connected to the pure water end;
[0009] A return water circuit, one end of the return water circuit is connected to the water usage circuit, and the other end is connected to the inlet water circuit between the pre-filter and the second control valve, and a third control valve is installed on the return water circuit;
[0010] A water storage container, which can receive pure water from the pure water end and can controllably supply water to the inlet water circuit between the pre-filter and the second control valve;
[0011] A second waste water circuit, which is connected to the inlet water circuit between the first control valve and the pre-filter, and a fourth control valve is installed on the second waste water circuit.
[0012] The water purification system according to the embodiments of the present utility model has at least the following beneficial effects: The water purification system combines the zero stagnant water function and the backwashing function for the pre-filter, which can effectively increase the service life of the pre-filter while ensuring the health of water use, and reduce the user's use and maintenance costs.
[0013] According to some embodiments of the present utility model, the water storage container is connected to the return water path, and the connection point is located on the return water path between the third control valve and the pure water end.
[0014] According to some embodiments of the present utility model, the water storage container is a pressure tank.
[0015] According to some embodiments of the present utility model, a one-way valve is installed on the water use path, and the water control direction of the one-way valve is that the water flowing through the one-way valve flows unidirectionally in a direction away from the pure water end. One end of the return water path is connected to the water use path on the downstream side of the one-way valve.
[0016] According to some embodiments of the present utility model, a waste water valve is installed on the first waste water path.
[0017] According to some embodiments of the present utility model, the pre-filter is a PP cotton filter and / or a pre-activated carbon filter.
[0018] According to some embodiments of the present utility model, the pre-filter is an integrated filter integrating a PP cotton filter and a pre-activated carbon filter.
[0019] According to some embodiments of the present utility model, the second control valve and the third control valve are integrated into a three-way valve.
[0020] According to some embodiments of the present utility model, the first control valve, the second control valve, the third control valve and the fourth control valve are all solenoid valves.
[0021] According to some embodiments of the present utility model, a post-activated carbon filter is also installed on the water use path.
[0022] The additional aspects and advantages of the present utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:
[0024] Figure 1 is a schematic diagram of one of the embodiments of the present utility model;
[0025] Figure 2 It is a schematic diagram of another embodiment of the present utility model.
[0026] Reference numerals: water inlet waterway 100; first control valve 110; pre-filter 120; PP cotton filter element 121; pre-activated carbon filter element 122; second control valve 130; pressurizing device 140; reverse osmosis filter element 200; raw water end 201; pure water end 202; waste water end 203; first waste water waterway 300; waste water valve 310; water usage waterway 400; pressure detection mechanism 410; check valve 420; post-activated carbon filter element 430; return water waterway 500; third control valve 510; water storage container 600; second waste water waterway 700; fourth control valve 710. Detailed implementation manners
[0027] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.
[0028] The present utility model relates to a water purification system, comprising a water inlet waterway 100, a reverse osmosis filter element 200, a water usage waterway 400, a return water waterway 500, a water storage container 600, a first waste water waterway 300 and a second waste water waterway 700.
[0029] Such as Figure 1 And Figure 2As shown, waterways such as the inlet waterway 100, the return waterway 500, the first wastewater waterway 300, and the second wastewater waterway 700 can be composed of water pipes, waterway plates, or other water-conducting components. A first control valve 110, a pre-filter 120, a second control valve 130, and a pressurizing device 140 are sequentially installed on the inlet waterway 100. One end of the inlet waterway 100 near the first control valve 110 serves as the water inlet end. The water inlet end is used to connect to a municipal water pipe or other water supply systems. Hereinafter, tap water provided by the municipal water to the water purification system will be described. The first control valve 110 is used to control whether tap water is introduced into the inlet waterway 100. The pre-filter 120 is used to preliminarily filter tap water to form purified water. The pre-filter 120 is a PP cotton filter element 121 or a pre-activated carbon filter element 122, or can also be a combined use of the PP cotton filter element 121 and the pre-activated carbon filter element 122. When the PP cotton filter element 121 and the pre-activated carbon filter element 122 are used in combination, the PP cotton filter element 121 and the pre-activated carbon filter element 122 can be separately installed on the inlet waterway 100; or the PP cotton filter element 121 and the pre-activated carbon filter element 122 can be integrated in the same filter cartridge, and the pre-filter 120 is an integrated filter element integrating the PP cotton filter element 121 and the pre-activated carbon filter element 122. The second control valve 130 is used to control whether the tap water entering the inlet waterway 100 is delivered to the pressurizing device 140. The pressurizing device 140 can be a booster pump. The reverse osmosis filter element 200 has a raw water end 201, a pure water end 202, and a wastewater end 203. One end of the inlet waterway 100 near the pressurizing device 140 is the downstream end of the inlet waterway 100. The raw water end 201 is connected to the downstream end of the inlet waterway 100. The water flowing through the inlet waterway 100 enters the reverse osmosis filter element 200 from the raw water end 201 for reverse osmosis filtration, and tap water is filtered to separate out pure water and wastewater. The pure water is output from the pure water end 202, and the wastewater is discharged from the wastewater end 203. The wastewater end 203 is connected to the first wastewater waterway 300, and the wastewater can be drained into the sewer through the first wastewater waterway 300. A wastewater valve 310 can be installed on the first wastewater waterway 300. The wastewater valve 310 is a wastewater ratio, and the wastewater valve 310 is used to control the discharge volume of the first wastewater waterway 300. One end of the water usage waterway 400 is connected to the pure water end 202. Pure water can be delivered to the water usage waterway 400 through the pure water end 202. A pressure detection mechanism 410 is installed on the water usage waterway 400. The pressure detection mechanism 410 is used to detect the water pressure in the water usage waterway 400 in real time. One end of the water usage waterway 400 connected to the pure water end 202 is the upstream end of the water usage waterway 400, and one end of the water usage waterway 400 far from the pure water end 202 is the downstream end of the water usage waterway 400. The downstream end of the water usage waterway 400 can be connected to a water outlet device such as a faucet.One end of the return water channel 500 is connected to the water-using channel 400, and this end serves as the upstream end of the return water channel 500; the other end of the return water channel 500 is connected to the inlet water channel 100, and this end serves as the downstream end of the return water channel 500. The connection point between the downstream end of the return water channel 500 and the inlet water channel 100 is located between the pre-filter 120 and the second control valve 130. A third control valve 510 is installed on the return water channel 500, and the third control valve 510 is used to control the opening and closing of the return water channel 500. The pure water discharged from the pure water end 202 can enter the return water channel 500. The water storage container 600 can be connected to the pure water end 202 through a water pipe, and the water storage container 600 can receive and store the pure water discharged from the pure water end 202. The water storage container 600 is simultaneously connected to the inlet water channel 100, and the connection point is located between the pre-filter 120 and the second control valve 130. The water storage container 600 can controllably transport the pure water stored therein to the inlet water channel 100. The second waste water channel 700 is connected to the inlet water channel 100, and the connection point between the second waste water channel 700 and the inlet water channel 100 is located between the first control valve 110 and the pre-filter 120. A fourth control valve 710 is installed on the second waste water channel 700.
[0030] During actual operation, the water purification system has at least the following three operating modes.
[0031] Normal water usage mode: After the user opens the faucet at the downstream end of the water usage water path 400, the first control valve 110, the second control valve 130, and the pressurization device 140 are opened, the third control valve 510 and the fourth control valve 710 are closed. Tap water flows in from the water inlet end of the water inlet water path 100. The water flows through the first control valve 110, the pre-filter 120, the second control valve 130, and the pressurization device 140 in sequence along the water inlet water path 100 and then flows into the raw water end 201 of the reverse osmosis filter element 200. The water is filtered by the pre-filter 120 to obtain purified water. The purified water enters the reverse osmosis filter element 200 through the raw water end 201 to separate into pure water and wastewater. The pure water is discharged from the pure water end 202 to the water usage water path 400. The pure water flows along the water usage water path 400 and finally is discharged from the faucet for the user to use. The wastewater is discharged from the wastewater end 203 to the first wastewater water path 300 and finally is discharged from the end of the first wastewater water path 300. After the user finishes using water and closes the faucet, the first control valve 110, the second control valve 130, and the pressurization device 140 remain open, and pure water continues to be produced by the reverse osmosis filter element 200. The pure water is output from the pure water end 202 and then flows in the direction of the water storage container 600. The pure water flows into the water storage container 600 for storage. At this time, the water storage container 600 does not deliver pure water outward. When the water storage container 600 is full of water or the water storage container 600 is closed, the pure water can no longer be delivered to the water storage container 600, and the pure water will flush into the water usage water path 400, and the water pressure in the water usage water path 400 increases. The pressure detection mechanism 410 detects the water pressure in the water usage water path 400 in real time. When the water pressure in the water usage water path 400 increases to the preset pressure of the pressure detection mechanism 410, the pressure detection mechanism 410 feeds back a signal, and the first control valve 110, the second control valve 130, and the pressurization device 140 are closed, and the water purification system enters the standby state.
[0032] Zero standing water mode: In this mode, the first control valve 110, the second control valve 130, the third control valve 510, and the pressurization device 140 are opened, and the fourth control valve 710 is closed. Tap water flows in from the water inlet end of the water inlet channel 100, and the water flows through the first control valve 110, the pre-filter 120, the second control valve 130, and the pressurization device 140 in sequence along the water inlet channel 100 and then flows into the raw water end 201 of the reverse osmosis filter element 200. The water is filtered by the pre-filter 120 to obtain purified water. The purified water enters the reverse osmosis filter element 200 through the raw water end 201 to separate pure water and wastewater. The pure water is discharged from the pure water end 202 to the water using channel 400, and then enters the water return channel 500. The pure water flows back to the water inlet channel 100 through the water return channel 500. The pure water mixes with a part of the tap water in the water inlet channel 100 and enters the raw water end 201 through the second control valve 130 and the pressurization device 140. After passing through the raw water end 201, the pure water is filtered again. At this time, the pure water can enter the wastewater end 203, and the residual wastewater in the wastewater end 203 is discharged to the first wastewater channel 300, thereby replacing the high-concentration wastewater in the wastewater end 203 and realizing the zero standing water function. After circulating for a period of time, the first control valve 110, the second control valve 130, the third control valve 510, and the pressurization device 140 are closed, and the water purification system enters the standby state.
[0033] Backwashing mode: In this mode, the fourth control valve 710 is opened, and the first control valve 110, the second control valve 130, and the pressurization device 140 are closed. The pure water stored in the water storage container 600 is transported to the water inlet channel 100. After the pure water enters the water inlet channel 100, it flows upstream. The pure water backwashes the pre-filter 120, and the wastewater after backwashing flows from the water inlet channel 100 into the second wastewater channel 700 and is drained. After flushing for a period of time, the third control valve 510 and the fourth control valve 710 are closed, and the water purification system enters the standby state.
[0034] The water purification system combines the zero standing water function and the backwashing function of the pre-filter 120, which can effectively increase the service life of the pre-filter 120 while ensuring the health of water use, and reduce the user's use and maintenance costs.
[0035] In some embodiments of the present invention, as Figure 2 shown, the water inlet side of the water storage container 600 can be directly connected to the water using channel 400, and the water outlet side of the water storage container 600 is directly connected to the water inlet channel 100. A water valve is separately provided on the water outlet side of the water storage container 600 to control the water outlet. In the waterway connection of this method, the third control valve 510 is in the closed state during the backwashing mode. It can also be, as Figure 1As shown, the water storage container 600 is connected to the return water waterway 500, and the connection point is located on the return water waterway 500 between the third control valve 510 and the pure water end 202. At this time, both the water inlet and outlet of the water storage container 600 can be connected to the return water waterway 500 through the same water pipe for water conveyance. Under this waterway connection method, the third control valve 510 is in the open state during the backwashing mode, and the third control valve 510 is used to control whether the water storage container 600 is connected to the water inlet waterway 100 during the backwashing mode. Among them, when the water storage container 600 supplies water to the water inlet waterway 100, a booster pump can be installed on the water outlet side of the water storage container 600, and the booster pump is used to pump the pure water in the water storage container 600 and convey it to the water inlet waterway 100 during the backwashing mode. It can also be that the water storage container 600 is a pressure tank. The pressure tank supplies water to the water inlet waterway 100 during the backwashing mode through the internal water storage pressure. The pressure tank can use an elastic expandable and contractible water bag structure.
[0036] In some specific embodiments of the present utility model, as Figure 1 shown, a one-way valve 420 is installed on the water usage waterway 400. The water control direction of the one-way valve 420 is that the water flowing through the one-way valve 420 flows unidirectionally in the direction away from the pure water end 202. One end of the return water waterway 500 is connected to the water usage waterway 400 on the downstream side of the one-way valve 420. The one-way valve 420 can prevent the pure water in the pure water waterway from flowing back to the pure water end 202.
[0037] Among them, the second control valve 130 and the third control valve 510 can be installed as independent valve components. It can also be that the second control valve 130 and the third control valve 510 are integrated into a three-way valve for installation and use. The first control valve 110, the second control valve 130, the third control valve 510, and the fourth control valve 710 can all be selected as solenoid valves. The first control valve 110, the second control valve 130, the third control valve 510, the fourth control valve 710, the booster device 140, and the pressure detection mechanism 410 can all be electrically connected to an external electronic control system to control the start and stop.
[0038] In some specific embodiments of the present utility model, a post - activated carbon filter element 430 is also installed on the water usage waterway 400. When the pure water flows along the water usage waterway 400 towards the faucet, it flows through the post - activated carbon filter element 430. The post - activated carbon filter element 430 further filters the pure water to improve the taste of the water body.
[0039] In the description of this specification, the description referring to terms such as "some specific embodiments" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.
[0040] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.
Claims
1. A water purification system, characterized in that, Comprising: A water inlet waterway (100) on which a first control valve (110), a pre-filter (120), a second control valve (130) and a pressurizing device (140) are sequentially installed; A reverse osmosis filter element (200) having a raw water end (201), a pure water end (202) and a wastewater end (203), wherein the raw water end (201) is connected to the downstream end of the water inlet waterway (100), and the wastewater end (203) is connected to a first wastewater waterway (300); A water usage waterway (400) on which a pressure detection mechanism (410) is installed, and the upstream end of the water usage waterway (400) is connected to the pure water end (202); A return water waterway (500) with one end connected to the water usage waterway (400) and the other end connected to the water inlet waterway (100) between the pre-filter (120) and the second control valve (130), and a third control valve (510) is installed on the return water waterway (500); A water storage container (600) capable of receiving pure water from the pure water end (202) and capable of controllably supplying water to the water inlet waterway (100) between the pre-filter (120) and the second control valve (130); A second wastewater waterway (700) connected to the water inlet waterway (100) between the first control valve (110) and the pre-filter (120), and a fourth control valve (710) is installed on the second wastewater waterway (700).
2. The water purification system according to claim 1, wherein: The water storage container (600) is connected to the return water waterway (500), and the connection point is on the return water waterway (500) between the third control valve (510) and the pure water end (202).
3. The water purification system according to claim 1 or 2, characterized in that: The water storage container (600) is a pressure tank.
4. The water purification system according to claim 1, wherein: A check valve (420) is installed on the water usage waterway (400), and the water control direction of the check valve (420) is that the water flowing through the check valve (420) flows unidirectionally in a direction away from the pure water end (202), and one end of the return water waterway (500) is connected to the water usage waterway (400) on the downstream side of the check valve (420).
5. The water purification system according to claim 1, characterized in that: A wastewater valve (310) is installed on the first wastewater waterway (300).
6. The water purification system according to claim 1, wherein: The pre-filter (120) is a PP cotton filter element (121) and / or a pre-activated carbon filter element (122).
7. The water purification system according to claim 6, wherein: The pre-filter (120) is an integrated filter element integrating a PP cotton filter element (121) and a pre-activated carbon filter element (122).
8. The water purification system according to claim 1, wherein: The second control valve (130) and the third control valve (510) are integrated into a three-way valve.
9. The water purification system according to claim 1, characterized in that: The first control valve (110), the second control valve (130), the third control valve (510) and the fourth control valve (710) are all solenoid valves.
10. The water purification system according to claim 1, characterized in that: A post-activated carbon filter element (430) is also installed on the water usage waterway (400).