Water purification equipment for solving forward osmosis phenomenon

Abstract

The utility model discloses water purification equipment for solving forward osmosis phenomenon, which comprises an RO (reverse osmosis) membrane filter unit, a booster pump, a PE (polyethylene) water bag, a water supply pump and a water inlet valve, the water inlet valve, the booster pump, the RO membrane filter unit, a first one-way valve, the water supply pump and a faucet are sequentially connected, and the first one-way valve is arranged towards the water supply pump. A zero stale water path is connected between the rear side of the water supply pump and the water inlet side of the RO membrane filtering unit and comprises a first flow meter and a second one-way valve. The RO membrane filtering unit is flushed through the zero-stale-water waterway, the service life of the RO membrane filtering unit is effectively prolonged, the problem that the TDS value of the first cup of water of the water purifier is high is solved, pure water is stored in a water bag made of a medical-grade PE material, the material is zero in precipitation, and drinking water of a user is safer and healthier.

Description

Technical Field

[0001] This application relates to the field of water purification technology, specifically to a water purification device that solves the problem of forward osmosis. Background Technology

[0002] As people's living standards improve, they have higher requirements for drinking water quality, leading to the widespread popularity of water purifiers. High-flow-rate water purifiers are gradually becoming the mainstream in the market, but they also have some drawbacks. Water purifiers typically use reverse osmosis membranes (RO membrane filtration units) as their core filtration membrane. However, water purifiers using high-flow-rate RO membrane filtration units all share a common problem: when the water purifier is idle, the TDS (Total Dissolved Solids) value on the raw water side is higher than that on the pure water side, making it easier for raw water to permeate into the pure water side. This ultimately contaminates the pure water side of the RO membrane filtration unit, causing the TDS to rise. Consequently, after the water purifier has been idle for a period of time, the first cup of water the user drinks will have a high TDS value, failing to meet filtration requirements.

[0003] Application No. 201611237466.9 discloses a water purifier with a function to prevent secondary fouling of the reverse osmosis membrane, and application No. CN202122941857.1 discloses a water circuit system with pure water post-recirculation. Both disclose the purpose of reducing TDS by flushing the RO membrane filter unit with pure water recirculation.

[0004] However, since both methods involve mixing raw water and purified water for flushing, the flushing effect is not ideal and cannot completely solve the problem of increased TDS after the water purifier has been stationary for a certain period of time. In areas where the raw water TDS value is already high, water taken within 10 minutes after the machine is turned off still has the problem of TDS exceeding the standard. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a water purification device that solves the problem of forward osmosis, which can avoid the problem of TDS failure when taking water after the water purifier is shut down, thus overcoming the shortcomings of the prior art.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: a water purification device for solving the forward osmosis phenomenon, including an RO membrane filtration unit, an inlet valve, a booster pump, a PE water bag, a water supply pump, a micro-pressure sensor, and a first flow meter. The inlet valve, booster pump, RO membrane filtration unit, first check valve, water supply pump, and faucet are connected in sequence. The first check valve is arranged towards the water supply pump. A zero-stagnant water circuit is connected between the rear side of the water supply pump and the inlet side of the RO membrane filtration unit. The zero-stagnant water circuit includes a first flow meter and a second check valve.

[0007] The inlet of the RO membrane filter unit is connected to the booster pump, the outlet of the RO membrane filter unit is connected to the inlet of the first one-way valve, and the wastewater outlet of the RO membrane filter unit is connected to a wastewater valve.

[0008] The PE water bag inlet and outlet pipes are connected to the pipes between the outlet of the first one-way valve and the water supply pump, and a micro-pressure sensor is installed on the PE water bag inlet and outlet pipes.

[0009] The inlet of the first flow meter is connected to the pipeline between the water supply pump and the second flow meter, the outlet of the first flow meter is connected to the inlet of the second one-way valve, and the outlet of the second one-way valve is connected to the pipeline between the booster pump and the RO membrane filter unit.

[0010] A pre-filter PCB is installed in front of the booster pump.

[0011] The above technical solution has the following beneficial effects:

[0012] The purified water filtered by the RO membrane filter unit enters the zero-stagnant water circuit, which flushes the RO membrane filter unit, effectively extending its service life and preventing the physical phenomenon of increased TDS value after long-term shutdown and restart, thus solving the problem of high TDS value in the first cup of water from the water purifier.

[0013] Furthermore, the purified water is stored in water bags made of medical-grade PE material. This material has good chemical stability and will not leach toxic or harmful substances, thus preventing secondary pollution of the purified water and making the drinking water safer and healthier for users. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the water circuit principle of this utility model.

[0015] The meanings of the reference numerals in the attached figures are as follows:

[0016] 1. Inlet valve, 2. Pre-filter PCB element, 3. Booster pump, 4. RO membrane filter unit, 5. First check valve, 6. PE water bag, 61. PE water bag inlet and outlet pipes, 7. Water supply pump, 8. Second flow meter, 9. First flow meter, 10. Second check valve, 11. Micro pressure sensor, 12. Wastewater valve. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein 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 only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can be a mechanical connection or an electrical connection; they can be a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] like Figure 1 As shown, a water purification device for solving the forward osmosis phenomenon includes an RO membrane filtration unit 4, an inlet valve 1, a booster pump 3, a PE water bag 4, a water supply pump 7, a micro-pressure sensor 61, and a first flow meter 10. The inlet valve 1, the booster pump 3, the RO membrane filtration unit 4, the first check valve 5, the water supply pump 7, and the faucet are connected in sequence. The first check valve 5 is set towards the water supply pump 7. A zero-stagnant water circuit is connected between the rear side of the water supply pump 7 and the inlet side of the RO membrane filtration unit 4. The zero-stagnant water circuit includes a first flow meter 9 and a second check valve 10.

[0020] The inlet of the RO membrane filter unit 4 is connected to the booster pump 3, the outlet of the RO membrane filter unit 4 is connected to the inlet of the first one-way valve 5, and the wastewater outlet of the RO membrane filter unit 4 is connected to the wastewater valve 12.

[0021] The PE water bag inlet and outlet pipe 61 is connected to the pipe between the outlet of the first one-way valve 5 and the water supply pump 7. A micro pressure sensor 11 is installed on the PE water bag inlet and outlet pipe 61.

[0022] Among them, the micro-pressure sensor 11 can detect whether the user is using water or not, and can also detect whether the pipeline is leaking.

[0023] Preferably, the PE water bag 6 is made of medical-grade PE material, which has chemical stability and can prevent the release of toxic and harmful substances from the water storage bag, thus avoiding secondary pollution.

[0024] Preferably, a second flow meter 8 is installed between the water supply pump 7 and the faucet.

[0025] The inlet of the first flow meter 9 is connected to the pipeline between the water supply pump 7 and the second flow meter 8. The outlet of the first flow meter 9 is connected to the inlet of the second one-way valve 10. The outlet of the second one-way valve 10 is connected to the pipeline between the booster pump 3 and the RO membrane filter unit 4.

[0026] Preferably, a pre-filter PCB element 2 is installed before the booster pump 3. The PCB element mainly uses activated carbon as the filter medium. It removes residual chlorine, odor, color, organic pollutants, etc. in the water through physical adsorption and chemical reaction. It can perform coarse filtration of raw water, thereby extending the life of the RO membrane filter unit 4.

[0027] The zero-stagnant water circuit backflow flushing method is as follows: After the faucet is turned off, the zero-stagnant water purifier continues to produce water and flow into the PE water bag. The pressure in the PE water bag rises. After the micro-pressure sensor detects that the pressure in the PE water bag is greater than the threshold, the inlet valve closes, the second one-way valve opens, and the booster pump and water supply pump are turned off. Under pressure, the pure water in the PE water bag flows into the RO membrane filter unit through the zero-stagnant water circuit. The pure water mixes with the raw water in the RO membrane filter unit and is discharged from the combined wastewater valve until the pure water completely replaces the raw water in the RO membrane filter unit.

[0028] Preferably, the first flow meter 9 can monitor and calculate the flow rate through the zero-stagnant water path so as to visually observe the flushing effect of the water path, and the second flow meter 8 can monitor and calculate the flow rate of pure water when water is used.

[0029] Although embodiments of the present invention have been shown and described, those skilled in the art should understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents. Improvements made without inventive effort should be included within the protection scope of the present invention.

Claims

1. A water purification apparatus for solving the phenomenon of forward osmosis, comprising an RO membrane filtration unit (4), a booster pump (3), characterized in that, It also includes PE water bag (6), water supply pump (7), water inlet valve (1), the water inlet valve (1), booster pump (3), RO membrane filter unit (4), first check valve (5), water supply pump (7), faucet are connected in turn, the first check valve (5) is arranged towards the water supply pump (7) direction, is connected between the water supply pump (7) rear side and the water inlet side of RO membrane filter unit (4) zero water channel, the zero water channel includes first flow meter (9) and second check valve (10).

2. The water purification apparatus according to claim 1, characterized by The RO membrane filter unit (4) water inlet is connected with the booster pump (3), the RO membrane filter unit (4) water outlet is connected with the water inlet of first check valve (5), and the waste water valve (12) is connected to the waste water outlet of RO membrane filter unit (4).

3. The water purification apparatus according to claim 1, characterized by The PE water bag inlet and outlet pipeline (61) is communicated with the pipeline between the water outlet of first check valve (5) and water supply pump (7), and the micro pressure sensor (11) is arranged on the PE water bag inlet and outlet pipeline (61).

4. The water purification apparatus according to claim 1, characterized by The water inlet of first flow meter (9) is communicated with water supply pump (7), the water outlet of first flow meter (9) is communicated with the water inlet of second check valve (10), and the pipeline between the water outlet of second check valve (10) and booster pump (3) and RO membrane filter unit (4) is communicated.

5. The water purification apparatus according to claim 1, characterized by The front of booster pump (3) is provided with front PCB filter element (2).

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