Reverse osmosis water purification device

By adopting the inner and outer stop ring structure and elastic rubber strip design in the reverse osmosis water purification device, the problem of insufficient sealing performance is solved, higher sealing properties and stable water pressure are achieved, and the purification effect is ensured.

CN223189049UActive Publication Date: 2025-08-05SUZHOU RUNMO WATER TREATMENT TECH CO LTD
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Patent Information

Application Number
CN202422172176.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-05
Publication Date
2025-08-05
Estimated Expiration
2034-09-05

AI Technical Summary

Technical Problem

The sealing performance of existing reverse osmosis water purification devices is poor, resulting in liquid leakage, affecting water pressure and purification effect.

Method used

The inner and outer stop ring structure is adopted, and the sealing of the reverse osmosis filter element assembly is enhanced by the elastic rubber strip embedded in grooves and convex strip design, including the interlaced closure between the inner stop ring and the outer stop ring and the design of the inner stop ring embedded in the mounting groove, improving the sealing between the end cover and the annular seat.

Benefits of technology

It reduces the probability of liquid leakage, improves the overall sealing performance, maintains the stability of the device's water pressure, and ensures the purification effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a reverse osmosis water purification device. The water outlet end of a booster pump is communicated with a water inlet pipe; the reverse osmosis filter element assembly comprises a shell, an annular seat arranged at the end of the shell and an end cover matched with the annular seat, an inner stop ring and an outer stop ring are arranged on the side, opposite to the inner wall of the end cover, of the annular seat, and a first groove is formed between the inner stop ring and the outer stop ring which are distributed at an interval; the inner wall of the end cover is provided with a first raised line which can be embedded into the first groove; a second protruding strip is arranged on the surface of the outer stop ring in the circumferential direction, a second groove for the second protruding strip to be embedded is formed in the position, located on one side of the first protruding strip, in the end cover, and a third protruding strip is arranged on the side, opposite to the second groove, of the first protruding strip. And a mounting groove for embedding the inner stop ring is formed between the third raised line and the first raised line. According to the reverse osmosis water purification device, the probability of liquid leakage is reduced, the overall sealing performance is improved, and the stability of the water pressure of the device is favorably maintained so as to ensure the purification effect.
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Description

Technical Field

[0001] The utility model relates to the technical field of reverse osmosis water purification, in particular to a reverse osmosis water purification device. Background Art

[0002] Reverse osmosis pure water treatment systems utilize membrane separation technology to remove charged ions, inorganic matter, colloidal particles, bacteria, and organic matter from water. Reverse osmosis water purification and filtration primarily utilize the principle of reverse osmosis for water treatment. Reverse osmosis membrane technology applies a certain pressure to water, forcing water molecules and ionic mineral elements to pass through the reverse osmosis membrane. However, most inorganic salts (including heavy metals), organic matter, bacteria, and viruses dissolved in the water cannot pass through the reverse osmosis membrane, thus strictly separating the purified water that has permeated through it from the concentrated water that has not.

[0003] A reverse osmosis filter assembly with a reverse osmosis membrane core needs to withstand a certain pressure inside during filtration. However, the sealing performance of the reverse osmosis filter assembly in the prior art is poor, and water leaks when passing through the filter element assembly, resulting in a decrease in the water flow inside the device, thereby reducing the water pressure inside the water purification device and affecting the overall purification effect. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a reverse osmosis water purification device, which reduces the probability of liquid leakage, improves the overall sealing performance, and is conducive to maintaining the stability of the water pressure of the device to ensure the purification effect.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: a reverse osmosis water purification device, comprising: a clean water tank having a water inlet pipe and a water outlet pipe, a booster pump, and a first filter element assembly, a reverse osmosis filter element assembly, and a second filter element assembly arranged in sequence, the booster pump being arranged between the second filter element assembly and the clean water tank, the first filter element assembly and the reverse osmosis filter element assembly, the reverse osmosis filter element assembly and the second filter element assembly, and the second filter element assembly and the booster pump being connected respectively via a connecting pipe equipped with a valve, and the water outlet end of the booster pump being connected to the water inlet pipe;

[0006] The reverse osmosis filter element assembly includes: an outer shell, an annular seat arranged at the end of the outer shell, and an end cover that cooperates with the annular seat. The annular seat is provided with an inner stop ring and an outer stop ring on one side relative to the inner wall of the end cover. A first groove is provided between the inner stop ring and the outer stop ring that are spaced apart. The inner wall of the end cover has a first ridge that can be embedded in the first groove; a second ridge is located on the surface of the outer stop ring and is provided along the circumferential direction. A second groove for the second ridge to be embedded is provided on one side of the first ridge and on the inside of the end cover.

[0007] The further improved scheme in the above technical scheme is as follows:

[0008] 1. In the above solution, a third protrusion is provided on the side of the first protrusion opposite to the second groove, and a mounting groove for the inner stop ring to be embedded is formed between the third protrusion and the first protrusion.

[0009] 2. In the above solution, the first convex strip, the second convex strip and the third convex strip are all elastic rubber strips.

[0010] 3. In the above solution, the width of the first ridge is 2 to 4 times that of the third ridge.

[0011] 4. In the above solution, the end cover and the annular seat are fixedly connected by screws.

[0012] 5. In the above solution, the filter element of the second filter element assembly is an activated carbon filter element or an ultrafiltration membrane filter element.

[0013] 6. In the above solution, the filter element of the first filter element assembly is a PP cotton filter element or an activated carbon filter element.

[0014] 7. In the above solution, the housing and the annular seat are an integrated structure.

[0015] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0016] The utility model reverse osmosis water purification device, the annular seat relative to the inner wall of the end cover is provided with an inner stop ring and an outer stop ring, a first groove is provided between the inner stop ring and the outer stop ring which are spaced apart, the inner wall of the end cover has a first convex strip which can be embedded in the first groove; a second convex strip is provided on the surface of the outer stop ring and along the circumferential direction, a second groove for the second convex strip to be embedded in is provided on one side of the first convex strip and on the inside of the end cover, when the end cover is closed with the annular seat, the first convex strip is embedded in the first groove of the inner stop ring, and the second convex strip on the outer stop ring is embedded in the second groove of the end cover, so that a space is formed between the inner stop ring and the outer stop ring. The staggered sealing improves the sealing between the end cover and the outer shell, increases the resistance to liquid leakage, reduces the probability of liquid leakage, improves the overall sealing performance, and is beneficial to maintaining the stability of the water pressure of the device to ensure the purification effect; further, a third ridge is provided on the side of the first ridge opposite to the second groove, and an installation groove for the inner stop ring to be embedded is formed between the third ridge and the first ridge, and the first ridge is embedded in the first groove through the first ridge, and the inner stop ring is embedded in the installation groove of the first ridge and the third ridge, thereby forming a seal on both sides of the inner stop ring, improving the sealing between the end cover and the annular seat, and further reducing the probability of liquid leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attachment Figure 1This is a schematic diagram of the overall structure of the reverse osmosis water purification device of the utility model;

[0018] Attachment Figure 2 This is a schematic structural diagram of the reverse osmosis filter element assembly of the utility model;

[0019] Attachment Figure 3 This is a schematic diagram of the internal structure of the reverse osmosis filter element assembly of the utility model;

[0020] Attachment Figure 4 For this utility model Figure 3 A magnified schematic diagram of .

[0021] In the above drawings: 1. Clean water tank; 101. Water inlet pipe; 102. Water outlet pipe; 2. First filter element assembly; 3. Second filter element assembly; 4. Reverse osmosis filter element assembly; 401. Water inlet; 402. Water outlet pipe; 403. Waste water pipe; 5. Booster pump; 6. Water inlet valve; 7. Connecting pipe; 8. Outer casing; 9. End cover; 10. Reverse osmosis membrane core; 11. Center tube; 12. Annular seat; 121. Inner stop ring; 122. Outer stop ring; 123. First groove; 13. First ridge; 14. Second ridge; 15. Second groove; 16. Third ridge; 17. Screw; 18. Screw hole; 19. Mounting groove. DETAILED DESCRIPTION

[0022] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.

[0023] Example 1: A reverse osmosis water purification device, comprising: a clean water tank 1 having a water inlet pipe 101 and a water outlet pipe 102, a booster pump 5, and a first filter element assembly 2, a reverse osmosis filter element assembly 4, and a second filter element assembly 3 arranged in sequence;

[0024] Connect the water inlet end of the first filter element assembly to the corresponding liquid supply pipeline, open the valve, start the booster pump, and filter the liquid to be filtered in the liquid supply pipeline through the first filter element assembly, reverse osmosis filter element assembly, and second filter element assembly connected in sequence. The booster pump discharges the liquid filtered by the first filter element assembly, reverse osmosis filter element assembly, and second filter element assembly into the clean water tank;

[0025] The above-mentioned reverse osmosis filter element assembly 4 also includes: a central tube 11, a wastewater pipe 403 and a reverse osmosis membrane core 10. One end of the above-mentioned central tube 11 located inside the shell 8 is a water inlet 401, and the other end is a water outlet 402. A reverse osmosis membrane core 10 is arranged between the inner wall of the above-mentioned shell 8 and the central tube 11.

[0026] The booster pump 5 is arranged between the second filter element assembly 3 and the clean water tank 1, and the first filter element assembly 2 and the reverse osmosis filter element assembly 4, the reverse osmosis filter element assembly 4 and the second filter element assembly 3, and the second filter element assembly 3 and the booster pump 5 are respectively connected through a connecting pipe 7 equipped with a valve 6, and the water outlet end of the booster pump 5 is connected to the water inlet pipe 101;

[0027] During the use of the reverse osmosis filter element assembly, the inner stop ring is embedded in the mounting groove between the first convex strip and the third convex strip, and the first convex strip is embedded in the first groove, thereby forming a seal on both sides of the inner stop ring, greatly improving the sealing between the inner stop ring and the end cover;

[0028] The reverse osmosis filter element assembly 4 includes: an outer shell 8, an annular seat 12 arranged at the end of the outer shell 8 and an end cover 9 that cooperates with the annular seat 12. The annular seat 12 is provided with an inner stop ring 121 and an outer stop ring 122 on one side of the inner wall of the end cover 9. A first groove 123 is provided between the inner stop ring 121 and the outer stop ring 122 that are spaced apart. The inner wall of the end cover 9 has a first ridge 13 that can be embedded in the first groove 123; a second ridge 14 is located on the surface of the outer stop ring 122 and is provided along the circumferential direction, and a second groove 15 is provided on one side of the first ridge 13 and on the inside of the end cover 9 for the second ridge 14 to be embedded.

[0029] The second ridge on the surface of the outer stop ring can also be embedded in the second groove of the end cover, further improving the sealing between the first ridge and the first groove, thereby greatly improving the sealing between the end cover and the annular seat;

[0030] A third protrusion 16 is provided on a side of the first protrusion 13 opposite to the second groove 15 , and a mounting groove 19 for the inner stop ring 121 to be inserted is formed between the third protrusion 13 and the first protrusion 13 .

[0031] The first protruding strip 13 , the second protruding strip 14 and the third protruding strip 16 are all elastic rubber strips.

[0032] The width of the first ridge 13 is 2.5 times that of the third ridge 16 .

[0033] The end cover 9 and the annular seat 12 are fixedly connected by screws 17 .

[0034] The filter element of the second filter element assembly 3 is an activated carbon filter element.

[0035] The filter element of the first filter element assembly 2 is a PP cotton filter element.

[0036] The housing 8 and the annular seat 12 are an integrated structure.

[0037] The outer stop ring 122 has screw holes 18 that cooperate with the screws 17 .

[0038] Example 2: A reverse osmosis water purification device, comprising: a clean water tank 1 having a water inlet pipe 101 and a water outlet pipe 102, a booster pump 5, and a first filter element assembly 2, a reverse osmosis filter element assembly 4, and a second filter element assembly 3 arranged in sequence, the booster pump 5 being arranged between the second filter element assembly 3 and the clean water tank 1, the first filter element assembly 2 and the reverse osmosis filter element assembly 4, the reverse osmosis filter element assembly 4 and the second filter element assembly 3, and the second filter element assembly 3 and the booster pump 5 being connected via a connecting pipe 7 equipped with a valve 6, and the water outlet end of the booster pump 5 is connected to the water inlet pipe 101;

[0039] When the end cover is closed with the annular seat, the first ridge is embedded in the first groove of the inner stop ring, and the second ridge on the outer stop ring is embedded in the second groove of the end cover, thereby staggered sealing between the inner stop ring and the outer stop ring, improving the sealing between the end cover and the outer shell, increasing the resistance to liquid leakage, improving the overall sealing performance, and facilitating the maintenance of the water pressure of the device to ensure the purification effect;

[0040] The reverse osmosis filter element assembly 4 includes: a housing 8, an annular seat 12 provided at the end of the housing 8, and an end cap 9 cooperating with the annular seat 12. The annular seat 12 is provided with an inner stop ring 121 and an outer stop ring 122 on one side of the inner wall of the end cap 9. A first groove 123 is formed between the inner stop ring 121 and the outer stop ring 122.

[0041] The inner wall of the end cover 9 has a first ridge 13 that can be embedded in the first groove 123; a second ridge 14 is located on the surface of the outer stop ring 122 and is arranged circumferentially, and a second groove 15 is located on one side of the first ridge 13 and is opened on the inside of the end cover 9 for the second ridge 14 to be embedded.

[0042] The first convex strip is embedded in the first groove, and the inner stop ring is embedded in the mounting groove of the first convex strip and the third convex strip, thereby forming a seal on both sides of the inner stop ring, improving the sealing between the end cover and the annular seat, and greatly reducing the probability of liquid leakage;

[0043] A third protrusion 16 is provided on a side of the first protrusion 13 opposite to the second groove 15 , and a mounting groove 19 for the inner stop ring 121 to be inserted is formed between the third protrusion 13 and the first protrusion 13 .

[0044] The width of the first ridge 13 is 3.5 times that of the third ridge 16 .

[0045] The end cover 9 and the annular seat 12 are fixedly connected by screws 17 .

[0046] The filter element of the second filter element assembly 3 is an ultrafiltration membrane filter element.

[0047] The filter element of the first filter element assembly 2 is an activated carbon filter element.

[0048] The valve 6 is an electrically controlled valve.

[0049] The outer stop ring 122 has screw holes 18 for cooperating with the screws 17 ; the screws 17 are distributed at equal intervals along the circumference of the outer stop ring 122 .

[0050] The working principle is:

[0051] Connect the water inlet end of the first filter element assembly to the corresponding liquid supply pipeline, open the valve, start the booster pump, and filter the liquid to be filtered in the liquid supply pipeline through the first filter element assembly, reverse osmosis filter element assembly, and second filter element assembly connected in sequence. The booster pump discharges the liquid filtered by the first filter element assembly, reverse osmosis filter element assembly, and second filter element assembly into the clean water tank;

[0052] During the use of the reverse osmosis filter element assembly, the inner stop ring is embedded in the installation groove between the first ridge and the third ridge, and the first ridge is embedded in the first groove, thereby forming a seal on both sides of the inner stop ring, greatly improving the sealing between the inner stop ring and the end cover. The second ridge on the surface of the outer stop ring can also be embedded in the second groove of the end cover, further improving the sealing between the first ridge and the first groove, thereby greatly improving the sealing between the end cover and the annular seat.

[0053] The above-mentioned reverse osmosis water purification device is adopted, when the end cover and the annular seat cover are closed, the first ridge is embedded in the first groove of the inner stop ring through the first ridge, and the second ridge on the outer stop ring is embedded in the second groove of the end cover, thereby forming an interlaced seal between the inner stop ring and the outer stop ring, improving the sealing between the end cover and the outer shell, increasing the resistance to liquid leakage, improving the overall sealing performance, and being conducive to maintaining the stability of the water pressure of the device to ensure the purification effect; further, the first ridge is embedded in the first groove, and the inner stop ring is embedded in the mounting groove of the first ridge and the third ridge, thereby forming a seal on both sides of the inner stop ring, improving the sealing between the end cover and the annular seat, and greatly reducing the probability of liquid leakage.

[0054] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to be included in the scope of protection of the present invention.

Claims

1. A reverse osmosis water purification device comprising: A clean water tank (1) having a water inlet pipe (101), a water outlet pipe (102), a booster pump (5), and a first filter element assembly (2), a reverse osmosis filter element assembly (4), and a second filter element assembly (3) arranged in sequence, wherein the booster pump (5) is arranged between the second filter element assembly (3) and the clean water tank (1), and is characterized in that: the first filter element assembly (2) and the reverse osmosis filter element assembly (4), the reverse osmosis filter element assembly (4) and the second filter element assembly (3), and the second filter element assembly (3) and the booster pump (5) are respectively connected through a connecting pipe (7) equipped with a valve (6), and the water outlet end of the booster pump (5) is connected to the water inlet pipe (101); The reverse osmosis filter element assembly (4) comprises: a housing (8), an annular seat (12) provided at the end of the housing (8), and an end cap (9) matched with the annular seat (12); the annular seat (12) is provided with an inner stop ring (121) and an outer stop ring (122) on one side relative to the inner wall of the end cap (9); a first groove (123) is provided between the inner stop ring (121) and the outer stop ring (122) which are spaced apart; the inner wall of the end cap (9) has a first ridge (13) capable of being embedded in the first groove (123); a second ridge (14) is provided on the surface of the outer stop ring (122) and along the circumferential direction; a second groove (15) for embedding the second ridge (14) is provided on one side of the first ridge (13) and on the inside of the end cap (9).

2. The reverse osmosis water purification device according to claim 1, characterized in that: A third ridge (16) is provided on the side of the first ridge (13) opposite to the second groove (15), and a mounting groove (19) for the inner stop ring (121) to be embedded is formed between the third ridge (16) and the first ridge (13).

3. The reverse osmosis water purification device according to claim 2, characterized in that: The first convex strip (13), the second convex strip (14) and the third convex strip (16) are all elastic rubber strips.

4. The reverse osmosis water purification device according to claim 2, characterized in that: The width of the first convex strip (13) is 2 to 4 times that of the third convex strip (16).

5. The reverse osmosis water purification device according to claim 1, characterized in that: The end cover (9) and the annular seat (12) are fixedly connected via screws (17).

6. The reverse osmosis water purification device according to claim 1, characterized in that: The filter element of the second filter element assembly (3) is an activated carbon filter element or an ultrafiltration membrane filter element.

7. The reverse osmosis water purification device according to claim 1, characterized in that: The filter element of the first filter element assembly (2) is a PP cotton filter element or an activated carbon filter element.

8. The reverse osmosis water purification device according to claim 1, characterized in that: The housing (8) and the annular seat (12) are an integrated structure.