Nanofiltration water purifier without changing core
By using nanofiltration cartridges and post-carbon rods combined with a booster pump in the water purifier, the problem of frequent cartridge replacement is solved, realizing a water purifier that does not require cartridge replacement and reducing user maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TONGXIANG YISIBEI ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
- Filing Date
- 2025-04-29
- Publication Date
- 2026-04-17
AI Technical Summary
Existing water purifiers require frequent filter replacements, resulting in high maintenance costs for users. The market needs a water purifier that does not require frequent filter replacements.
The design combines nanofiltration cartridges and post-carbon rods with a booster pump. Through the booster flushing function, it reduces filter clogging, extends filter life, and creates a water purifier that does not require cartridge replacement.
It effectively reduces filter clogging, extends filter life, and lowers user maintenance costs.
Smart Images

Figure CN224132780U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of water purification system technology, and in particular relates to a nanofiltration water purifier that does not require filter replacement. Background Technology
[0002] Household drinking water filters are becoming increasingly popular, with most families starting to use water purifiers. Common types of water purifiers include single-filter coarse filtration systems, ultrafiltration systems, and reverse osmosis (RO) systems. Their typical configuration consists of a pre-filter (PP cotton filter), a pre-filter (carbon rod filter), a RO filter, a post-filter (carbon rod filter), a booster pump, several control valves, and a circuit board. With existing water system configurations, water purifier filters have a limited lifespan; pre-filters generally need to be replaced every six months, and RO filters need to be replaced annually. Frequent replacements and high costs increase maintenance expenses for users. The market needs a water purifier with a higher cost-performance ratio.
[0003] Therefore, there is an urgent need for a nanofiltration water purifier that does not require filter replacement to solve the above-mentioned technical problems. Utility Model Content
[0004] The purpose of this invention is to provide a nanofiltration water purifier that does not require filter replacement, in order to solve the above-mentioned technical problems.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a non-replaceable nanofiltration water purifier, comprising a booster pump, a nanofiltration filter element, a post-carbon rod, a high-pressure valve, and a dual-outlet faucet; the nanofiltration filter element is connected to the booster pump, the post-carbon rod, and the dual-outlet faucet; one end of the post-carbon rod is connected to the nanofiltration filter element, and the other end of the post-carbon rod is connected to the dual-outlet faucet; a high-pressure valve is provided between the post-carbon rod and the dual-outlet faucet; hollow nanofiltration membrane fibers are disposed inside the nanofiltration filter element.
[0006] The booster pump is provided with a booster pump inlet and a booster pump outlet; the nanofiltration filter element is provided with a nanofiltration inlet, a nanofiltration purified water outlet and a nanofiltration rinsing outlet; the nanofiltration inlet and the nanofiltration rinsing outlet are respectively located at the upper and lower ends of the nanofiltration filter element, and the nanofiltration rinsing outlet is located on the side of the nanofiltration filter element; the booster pump outlet and the nanofiltration inlet are connected.
[0007] The rear carbon rod is provided with a carbon rod inlet and a carbon rod outlet at its upper and lower ends. The carbon rod inlet is connected to the nanofiltration water outlet, and the carbon rod outlet is connected to the high-pressure valve.
[0008] The dual-outlet faucet is equipped with a clean water interface and a flushing water interface. The clean water interface is connected to a high-pressure valve, and the flushing water interface is connected to a nanofiltration flushing port.
[0009] The booster pump, nanofiltration cartridge, post-carbon rod, high-pressure valve, and dual-outlet faucet are connected via PE pipes or an integrated water circuit board to form a purified water circuit.
[0010] The nanofiltration filter element and dual-outlet faucet are connected via PE pipes or an integrated water circuit board to form a flushing water circuit.
[0011] The booster pump and high-pressure valve are connected to a circuit. The high-pressure valve is an electrically controlled automatic valve, which is controlled by the program of the whole machine's electronic control board.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This invention purifies water flow by incorporating a nanofiltration filter cartridge and a post-carbon rod. Combined with the booster pump's pressurized flushing function, it removes contaminants from the surface of the hollow nanofiltration membrane fibers, effectively reducing filter cartridge clogging and contamination, extending filter cartridge lifespan, and achieving the goal of eliminating the need for cartridge replacement. This reduces the frequency of filter cartridge replacement and lowers maintenance costs for users. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of a nanofiltration water purifier that does not require filter replacement.
[0015] Figure 2 This is a schematic diagram of hollow nanofiltration membrane fibers;
[0016] In the diagram: 1. Booster pump inlet; 2. Booster pump outlet; 3. Booster pump; 4. Nanofiltration inlet; 5. Nanofiltration flushing port; 6. Nanofiltration purified water port; 7. Nanofiltration filter element; 8. Carbon rod inlet; 9. Carbon rod outlet; 10. Post-carbon rod; 11. High-pressure valve; 12. Purified water interface; 13. Flushing water interface; 14. Dual water taps; 15. Purified water path; 16. Flushing water path; 17. Hollow fiber nanofiltration membrane. Detailed Implementation
[0017] 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.
[0018] Please see Figures 1-2 This utility model provides a technical solution: a non-replaceable nanofiltration water purifier, including a booster pump 3, a nanofiltration filter element 7, a post-carbon rod 10, a high-pressure valve 11, and a dual-outlet faucet 14; the nanofiltration filter element 7 is connected to the booster pump 3, the post-carbon rod 10, and the dual-outlet faucet 14; one end of the post-carbon rod 10 is connected to the nanofiltration filter element 7, and the other end of the post-carbon rod 10 is connected to the dual-outlet faucet 14; a high-pressure valve 11 is provided between the post-carbon rod 10 and the dual-outlet faucet 14; hollow nanofiltration membrane fibers 17 are provided inside the nanofiltration filter element 7.
[0019] The booster pump 3 is equipped with a booster pump inlet 1 and a booster pump outlet 2. Tap water enters the booster pump 3 through the booster pump inlet 1 and is pressurized. The pressurized water flows out through the booster pump outlet 2 to the nanofiltration filter element 7.
[0020] The booster pump 3 is used to pressurize the water flow to ensure that the water flows stably into the nanofiltration cartridge 7.
[0021] The nanofiltration filter element 7 is provided with a nanofiltration inlet 4, a nanofiltration clean water inlet 6, and a nanofiltration rinsing inlet 5; the nanofiltration inlet 4 and the nanofiltration rinsing inlet 5 are respectively located at the upper and lower ends of the nanofiltration filter element 7, and the nanofiltration rinsing inlet 5 is located on the side of the nanofiltration filter element 7.
[0022] The booster pump outlet 2 and the nanofiltration inlet 4 are connected. The water flowing out of the booster pump outlet 2 enters the hollow nanofiltration membrane 17 through the nanofiltration inlet 4. The purified water flows out through the nanofiltration purified water inlet 6 and enters the post-carbon rod 10. The rinsing water flows out through the nanofiltration rinsing inlet 5.
[0023] The post-carbon rod 10 is provided with a carbon rod inlet 8 and a carbon rod outlet 9 at its upper and lower ends. The carbon rod inlet 8 is connected to the nanofiltration water outlet 6, and the carbon rod outlet 9 is connected to the high-pressure valve 11. The water flowing out of the nanofiltration water outlet 6 enters the post-carbon rod 10 through the carbon rod inlet 8, and flows through the carbon rod outlet 9 to the high-pressure valve 11 and is discharged to the dual-outlet faucet 14.
[0024] The dual-outlet faucet 14 is equipped with a purified water interface 12 and a flushing water interface 13. The purified water interface 12 is connected to the high-pressure valve 11, and the flushing water interface 13 is connected to the nanofiltration flushing port 5. Purified water flows through the high-pressure valve 11 and then out of the purified water interface 12 for use in the dual-outlet faucet 14; water flowing out of the nanofiltration flushing port 5 flows through the flushing water interface 13 and then out of the dual-outlet faucet 14 for use.
[0025] The booster pump 3, nanofiltration cartridge 7, post-carbon rod 10, high-pressure valve 11, and dual-outlet faucet 14 are connected by PE pipes or by an integrated water circuit board to form a purified water circuit 15.
[0026] The nanofiltration filter element 7 and the dual-outlet faucet 14 are connected by PE pipes or by an integrated water circuit board to form a flushing water circuit 16.
[0027] Furthermore, the nanofiltration filter element 1 of this utility model can adopt the application number: 202420275090.4, patent name: a filter element structure with forward flushing function; or other filter element structures that conform to this utility model can be adopted.
[0028] Furthermore, the nanofiltration filter element 1 can be forward-washed multiple times.
[0029] Furthermore, the booster pump 3 and the high-pressure valve 11 are connected to a circuit, and the high-pressure valve 11 is an electrically controlled automatic valve, which is controlled by the program of the whole machine's electronic control board.
[0030] When the water purifier faucet of the dual-outlet faucet 14 is opened, the flushing faucet is closed. Tap water enters through the booster pump inlet 1, enters the booster pump 3, and the pressurized water flows through the nanofiltration inlet 4 into the nanofiltration filter element 7. The nanofiltration filter element 7 is discharged from the side nanofiltration water outlet 6, enters the post-carbon rod 10 through the carbon rod inlet 8, flows through the high-pressure valve 11, and is discharged from the water purifier faucet of the dual-outlet faucet 14 through the water purifier interface 12.
[0031] When the water purifier faucet 14 is closed, the high-pressure valve 11 senses the high pressure and communicates with the pump 3, causing the pump 3 to stop working and the equipment to stop purifying water.
[0032] When the purified water faucet of the dual-outlet faucet 14 is closed and the flushing faucet is opened, the water flows through the nanofiltration flushing port 5 using the force of tap water, carrying away the pollutants on the surface of the hollow nanofiltration membrane filaments 17, and is discharged from the flushing water interface 13 to the right flushing faucet of the dual-outlet faucet 14, and the flow rate is restored.
[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 which is defined by the appended claims and their equivalents.
Claims
1. A non-regeneration nanofiltration water purifier, characterized in that, It includes a booster pump (3), a nanofiltration cartridge (7), a post-carbon rod (10), a high-pressure valve (11), and a dual-outlet faucet (14); the nanofiltration cartridge (7) is connected to the booster pump (3), the post-carbon rod (10), and the dual-outlet faucet (14); one end of the post-carbon rod (10) is connected to the nanofiltration cartridge (7), and the other end of the post-carbon rod (10) is connected to the dual-outlet faucet (14); a high-pressure valve (11) is provided between the post-carbon rod (10) and the dual-outlet faucet (14); hollow nanofiltration membrane fibers (17) are provided inside the nanofiltration cartridge (7).
2. The non-regeneration nanofiltration water purifier according to claim 1, characterized in that: The booster pump (3) is provided with a booster pump inlet (1) and a booster pump outlet (2); the nanofiltration filter element (7) is provided with a nanofiltration inlet (4), a nanofiltration clean water outlet (6) and a nanofiltration rinsing outlet (5); the nanofiltration inlet (4) and the nanofiltration rinsing outlet (5) are respectively located at the upper and lower ends of the nanofiltration filter element (7), and the nanofiltration rinsing outlet (5) is located on the side of the nanofiltration filter element (7); the booster pump outlet (2) and the nanofiltration inlet (4) are connected.
3. The non-regeneration nanofiltration water purifier according to claim 2, characterized in that: The rear carbon rod (10) is provided with a carbon rod inlet (8) and a carbon rod outlet (9) at its upper and lower ends. The carbon rod inlet (8) is connected to the nanofiltration water outlet (6), and the carbon rod outlet (9) is connected to the high pressure valve (11).
4. The non-regeneration nanofiltration water purifier according to claim 2, characterized in that: The dual-outlet faucet (14) is equipped with a water purification interface (12) and a flushing water interface (13). The water purification interface (12) is connected to the high-pressure valve (11), and the flushing water interface (13) is connected to the nanofiltration flushing port (5).
5. The non-regeneration nanofiltration water purifier according to claim 1, characterized in that: The booster pump (3), nanofiltration filter element (7), post-carbon rod (10), high-pressure valve (11) and dual-outlet faucet (14) are connected by PE pipe or by an integrated water circuit board to form a purified water circuit (15).
6. The non-regeneration nanofiltration water purifier according to claim 1, characterized in that: The nanofiltration filter element (7) and the dual-outlet faucet (14) are connected by PE pipes or by an integrated water circuit board to form a flushing water circuit (16).
7. The non-regeneration nanofiltration water purifier according to claim 1, characterized in that: The booster pump (3) and the high-pressure valve (11) are connected to a circuit. The high-pressure valve (11) is an electrically controlled automatic valve, which is controlled by the whole machine's electronic control board program.
Citation Information
Patent Citations
Filter element structure with forward flushing function
CN221854316U