A water purification system for improving a first cup of water

Abstract

The utility model relates to water purification equipment technical field especially relates to an improve first cup water's water purification system, include: water inlet solenoid valve, prefilter, booster pump, RO membrane, pure water tap, pure water backflow solenoid valve and the concentrated water backflow solenoid valve, wherein, water source is connected with the import pipeline of water inlet solenoid valve, the export of water inlet solenoid valve, the export of pure water backflow solenoid valve and the export of concentrated water backflow solenoid valve are connected with the import pipeline of prefilter respectively, the export of prefilter is connected with the import pipeline of booster pump, the export of booster pump is connected with the concentrated water side pipeline of RO membrane, and the export of pure water side of RO membrane is connected with the import of pure water tap and the import pipeline of pure water backflow solenoid valve respectively, the utility model discloses through pure water backflow and the closed cycle mode, not only solved the wastewater discharge problem existing in traditional RO system, also effectively reduced the high TDS concentration of RO membrane concentrated water side, improved the quality of pure water and the overall efficiency of system.

Description

Technical Field

[0001] This utility model relates to the field of water purification equipment technology, and in particular to a water purification system for improving the first cup of water. Background Technology

[0002] The working principle of RO membrane is based on the selective permeability of semi-permeable membranes. Under normal operating conditions, raw water passes through the RO membrane under high pressure. Water molecules permeate through the membrane into the pure water side, while dissolved solids and other impurities are retained on the concentrate side. This separation process makes the water on the pure water side extremely pure with very low TDS concentration.

[0003] However, there is a significant problem with RO membrane technology in practical applications: after the water purifier stops working, the high TDS concentration water on the concentrate side of the RO membrane will gradually diffuse and permeate to the pure water side. The main reason for this phenomenon is that the RO membrane cannot effectively prevent the free diffusion of water molecules and dissolved solids when there is no pressure difference.

[0004] As time goes on, the high TDS concentration water on the concentrate side will gradually seep into the pure water side, causing the TDS concentration on the pure water side to gradually increase. Especially after the water purifier has been shut down for several hours or longer, the TDS concentration on the pure water side may reach a high level. This phenomenon not only affects the quality of pure water, but may also pose certain safety hazards to consumers' health.

[0005] To ensure that the water purifier continues to provide high-quality pure water after it is shut down, this invention provides a water purification system that improves the first cup of water. Utility Model Content

[0006] The purpose of this utility model is to address the shortcomings of the existing technology by providing a water purification system that improves the first cup of water, including: an inlet solenoid valve, a pre-filter, a booster pump, an RO membrane, a pure water faucet, a pure water return solenoid valve, and a concentrated water return solenoid valve.

[0007] The water source is connected to the inlet pipe of the inlet solenoid valve. The outlets of the inlet solenoid valve, the pure water return solenoid valve, and the concentrated water return solenoid valve are respectively connected to the inlet pipe of the pre-filter. The outlet of the pre-filter is connected to the inlet pipe of the booster pump. The outlet of the booster pump is connected to the concentrated water side pipe of the RO membrane. The pure water side outlets of the RO membrane are respectively connected to the inlet of the pure water faucet and the inlet pipe of the pure water return solenoid valve. The concentrated water side outlet of the RO membrane is connected to the inlet pipe of the concentrated water return solenoid valve.

[0008] Furthermore, a wastewater pipeline is provided at the outlet of the RO membrane on the concentrate side, and a wastewater proportioning valve is fixedly installed on the wastewater pipeline.

[0009] Furthermore, a solenoid valve is fixedly installed at the outlet of the wastewater proportional valve on the wastewater pipeline.

[0010] Furthermore, a pure water solenoid valve, a post-filter, a first check valve, and a high-pressure switch are sequentially and fixedly installed on the connecting pipe between the RO membrane and the pure water faucet.

[0011] Furthermore, a second check valve is fixedly installed on the connecting pipeline between the RO membrane and the pure water reflux solenoid valve.

[0012] Furthermore, a third check valve is fixedly installed on the connecting pipeline between the RO membrane and the concentrate return solenoid valve.

[0013] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0014] This invention solves the wastewater discharge problem in traditional RO systems by using pure water recirculation and closed-loop circulation, and effectively reduces the high TDS concentration on the concentrate side of the RO membrane, thereby improving the quality of pure water and the overall efficiency of the system. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the process structure of this utility model.

[0016] The reference numerals in the attached figures are:

[0017] 1. Inlet solenoid valve; 2. Pre-filter; 3. Booster pump; 4. RO membrane; 5. Pure water solenoid valve; 6. Post-filter; 7. First check valve; 8. High-pressure switch; 9. Pure water faucet; 10. Outlet solenoid valve; 11. Pure water return solenoid valve; 12. Second check valve; 13. Concentrate return solenoid valve; 14. Third check valve; 15. Wastewater proportional valve. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0021] Example

[0022] This embodiment provides a water purification system for improving the first cup of water, including: an inlet solenoid valve 1, a pre-filter 2, a booster pump 3, an RO membrane 4, a pure water faucet 9, a pure water return solenoid valve 11, and a concentrated water return solenoid valve 13.

[0023] The water source is connected to the inlet pipe of the inlet solenoid valve 1. The outlet of the inlet solenoid valve 1, the outlet of the pure water return solenoid valve 11, and the outlet of the concentrated water return solenoid valve 13 are respectively connected to the inlet pipe of the pre-filter 2. The outlet of the pre-filter 2 is connected to the inlet pipe of the booster pump 3. The outlet of the booster pump 3 is connected to the concentrated water side pipe of the RO membrane 4. The pure water side outlet of the RO membrane 4 is respectively connected to the inlet of the pure water faucet 9 and the inlet pipe of the pure water return solenoid valve 11. The concentrated water side outlet of the RO membrane 4 is connected to the inlet pipe of the concentrated water return solenoid valve 13.

[0024] The outlet of the RO membrane 4 on the concentrate side is also provided with a wastewater pipeline, a wastewater proportional valve 15 is fixedly installed on the wastewater pipeline, and an outlet solenoid valve 10 is fixedly installed at the outlet of the wastewater proportional valve 15 on the wastewater pipeline.

[0025] The RO membrane 4 and the pure water faucet 9 are connected by a pure water solenoid valve 5, a post-filter 6, a first one-way valve 7, and a high-pressure switch 8, which are fixedly installed in sequence on the connecting pipe.

[0026] A second check valve 12 is fixedly installed on the connecting pipeline between the RO membrane 4 and the pure water reflux solenoid valve 11.

[0027] A third check valve 14 is fixedly installed on the connecting pipeline between the RO membrane 4 and the concentrate return solenoid valve 13.

[0028] In a preferred embodiment, the high-pressure switch is a pure water high-pressure switch.

[0029] When in use, open the pure water faucet 9 to enter the normal water output state, open the inlet solenoid valve 1, and start the booster pump 3. This allows the pre-treated water to flow sequentially through solenoid valve 1, pre-filter 2, booster pump 3, RO membrane 4, pure water solenoid valve 5, post-filter 6, first check valve 7, and high-pressure switch 8 before exiting from the pure water faucet 9. When the pure water faucet 9 is closed, solenoid valve 1 closes, pure water solenoid valve 5 and outlet solenoid valve 10 close, pure water return solenoid valve 11 opens, and booster pump 3 continues to work, returning pure water to pre-filter 2. This circulates the water within the system, continuously diluting and replacing the municipal raw water before pre-filter 2 with pure water. Simultaneously, because there is no concentrated water discharge, a high TDS concentration is formed before the RO membrane 4. After a set reflux time S1, the system confirms that the water in the pre-filter 2 has been sufficiently diluted and replaced with pure water, and then closes the pure water reflux solenoid valve 11 and the booster pump 3. After a set time S2, the concentrated water reflux solenoid valve 13 and the booster pump 3 are opened. At this time, the pure water in the pre-filter 2, under the thrust of the booster pump 3, replaces and dilutes the high TDS water on the concentrated water side of the RO membrane 4. The replaced high TDS water returns to the pre-filter 2 through the concentrated water reflux pipeline. After a set time S3, the booster pump 3 and the concentrated water reflux solenoid valve 13 are quickly closed. In this way, through this working procedure, the TDS value of the water on the concentrated water side of the RO membrane 4 is greatly reduced, and there is no water discharge throughout the process, thus achieving water conservation.

[0030] In summary, by using pure water recirculation and closed-loop circulation, not only is the wastewater discharge problem in traditional RO systems solved, but the high TDS concentration on the concentrate side of the RO membrane is also effectively reduced, thereby improving the quality of pure water and the overall efficiency of the system.

[0031] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A water purification system for improving a first cup of water, characterized by, The application relates to a water purification system, which comprises an inlet water electromagnetic valve (1), a front filter element (2), a booster pump (3), an RO membrane (4), a pure water faucet (9), a pure water backflow electromagnetic valve (11) and a concentrated water backflow electromagnetic valve (13). The water source is connected with an inlet pipeline of the inlet water electromagnetic valve (1), the outlet of the inlet water electromagnetic valve (1), the outlet of the pure water backflow electromagnetic valve (11) and the outlet of the concentrated water backflow electromagnetic valve (13) are respectively connected with an inlet pipeline of the front filter element (2), the outlet of the front filter element (2) is connected with an inlet pipeline of the booster pump (3), the outlet of the booster pump (3) is connected with a concentrated water side pipeline of the RO membrane (4), the outlet of a pure water side of the RO membrane (4) is respectively connected with an inlet of the pure water faucet (9) and an inlet pipeline of the pure water backflow electromagnetic valve (11), and the outlet of the concentrated water side of the RO membrane (4) is connected with an inlet pipeline of the concentrated water backflow electromagnetic valve (13). The outlet of the concentrated water side of the RO membrane (4) is further provided with a waste water pipeline, and a waste water proportional valve (15) is fixedly arranged on the waste water pipeline.

2. The improved water purification system of claim 1, wherein, An outlet of the waste water proportional valve (15) is further fixedly provided with a water outlet electromagnetic valve (10).

3. The improved water purification system of claim 2, wherein, A pure water electromagnetic valve (5), a rear filter element (6), a first one-way valve (7) and a high-pressure switch (8) are sequentially and fixedly arranged on a connecting pipeline of the RO membrane (4) and the pure water faucet (9).

4. The improved water purification system of claim 1, wherein, A second one-way valve (12) is fixedly arranged on a connecting pipeline of the RO membrane (4) and the pure water backflow electromagnetic valve (11).

5. The improved water purification system of claim 1, wherein, A third one-way valve (14) is fixedly arranged on a connecting pipeline of the RO membrane (4) and the concentrated water backflow electromagnetic valve (13).

6. The improved water purification system of claim 1, wherein, ​

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