CN220554605U

CN220554605U - Lead isolation structure of pre-filter

Info

Publication number: CN220554605U
Application number: CN202322081292.3U
Authority: CN
Inventors: 肖侃
Original assignee: Cixi City Shar Moon Electric Co ltd
Current assignee: Cixi City Shar Moon Electric Co ltd
Priority date: 2023-08-04
Filing date: 2023-08-04
Publication date: 2024-03-05
Anticipated expiration: 2033-08-04

Abstract

The utility model relates to a lead isolation structure of a pre-filter, which comprises a valve body, a filter flask, a main lining, a water inlet pipe lining and a water outlet pipe lining, wherein an extension part is arranged on the outer wall of the valve body, a mounting hole communicated with the inner cavity of the valve body is axially formed in the extension part, the filter flask is connected in the mounting hole, the main lining is connected in the valve body, the water inlet pipe lining and the water outlet pipe lining are both connected in the valve body and are positioned at two ends of the valve body, one end of the water inlet pipe lining is connected in the main lining, a first sealing ring is connected between the outer wall of the water inlet pipe lining and the inner wall of the main lining, one end of the water outlet pipe lining is connected in the main lining, a second sealing ring is connected between the outer wall of the water outlet pipe lining and the inner wall of the main lining, a part of the main lining is positioned in the mounting hole and is connected with a third sealing ring which is propped against the upper end face of the filter flask; the technical problem that water quality pollution is caused by heavy metal lead precipitation after a pre-filter valve body made of common brass is soaked in water for a long time in the prior art is solved.

Description

Lead isolation structure of pre-filter

Technical Field

The utility model relates to the technical field of pre-filters, in particular to a lead isolation structure of a pre-filter.

Background

The pre-filter can filter sediment, rust, red worms, other large particulate matters and the like in tap water, is generally arranged at the front end of a pipeline, so that a large amount of precipitation impurities generated in urban and district water supply networks can be prevented from damaging human bodies, and the pre-filter plays a positive pre-protection role on concealed pipelines, water faucets, water warmers, water heaters, boilers, central air conditioners, washing machines, dish washers, coffee machines, other household appliances involving water and the like, so that the pre-filter is favored by people in recent years, and is purchased and arranged in brand new decoration and pipe network reconstruction. The valve body can bear larger stress from a pipeline in operation and is generally made of brass alloy, but from the aspects of cost and processing performance, the valve body is preferably made of common brass with a certain lead content, but as the common brass is soaked in water for a long time, heavy metal lead in the common brass is separated out to water to cause water quality pollution, so that how to effectively isolate the water from the metal surface of the valve body is always a problem to be solved in the industry.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide a lead isolation structure of a pre-filter, so as to solve the technical problem that the water quality pollution is caused by heavy metal lead precipitation after a pre-filter valve body made of common brass is immersed in water for a long time in the prior art.

In order to solve the technical problems, the utility model provides a lead isolation structure of a pre-filter, which comprises a valve body and a filter flask, wherein an extension part is arranged on the outer wall of the valve body, a mounting hole communicated with an inner cavity of the valve body is axially formed in the extension part, the filter flask is connected in the mounting hole, the lead isolation structure further comprises a main lining, a water inlet pipe lining and a water outlet pipe lining, the main lining is connected in the valve body, the water inlet pipe lining and the water outlet pipe lining are both connected in the valve body and are respectively positioned at two ends of the valve body, one end of the water inlet pipe lining is connected in the main lining, a first sealing ring is connected between the outer wall of the water inlet pipe lining and the inner wall of the main lining, one end of the water outlet pipe lining is connected in the main lining, a second sealing ring is connected between the outer wall of the water outlet pipe lining and the inner wall of the main lining, a part of the main lining is positioned in the mounting hole and is connected with a third sealing ring between the inner wall of the mounting hole and the third sealing ring and the upper end face of the filter flask.

After the structure is adopted, the lead isolation structure of the pre-filter has the following advantages: through setting up main inside lining, inlet tube inside lining and outlet pipe inside lining, with water and valve body isolation, strengthen the leakproofness between main inside lining and inlet tube inside lining, the outlet pipe inside lining through first sealing washer and second in addition, and the extension that the third sealing washer then cuts off the valve body and main inside lining, filter flask, and then prevent that water from being polluted because of contacting with the valve body.

As an improvement, a first annular groove is formed between the outer peripheral wall of one end of the water inlet pipe lining and the main lining, a second annular groove is formed between the outer peripheral wall of one end of the water outlet pipe lining and the main lining, the first sealing ring is located in the first annular groove, and the second sealing ring is located in the second annular groove.

As an improvement, the extension part is positioned at the lower part of the outer wall of the valve body, the lower end of the main lining is positioned in the extension part, a third annular groove is arranged between the inner wall of the extension part and the peripheral wall of the lower end of the main lining, and the third sealing ring is positioned in the third annular groove.

As an improvement, a fourth sealing ring is connected between the outer wall of the filter flask and the inner wall of the mounting hole; by adopting the structure, the tightness between the filter flask and the extension part is further enhanced.

As an improvement, a fourth annular groove is arranged between the outer wall of the filter flask and the inner wall of the mounting hole, and a fourth sealing ring is positioned in the fourth annular groove.

As an improvement, the end face of one end of the valve body is connected with a first joint, the peripheral wall of one end of the valve body is in threaded connection with a first nut, the inner wall of one end of the first nut far away from the valve body is connected with a ring-shaped first protruding part, the first joint comprises a first wide part and a first narrow part which are connected with each other, a first step surface is formed between the first wide part and the first narrow part, a fifth sealing ring is arranged in the first nut and is connected with the end face of one end of the valve body, the fifth sealing ring abuts against the end face of the other end of the inner lining of the water inlet pipe, and the first protruding part abuts against the first step surface; the end face of the other end of the valve body is connected with a second joint, the peripheral wall of the other end of the valve body is in threaded connection with a second nut, an annular second protruding part is connected to the inner wall of one end, far away from the valve body, of the second nut, the second joint comprises a second wide part and a second narrow part which are mutually connected, a second step face is formed between the second wide part and the second narrow part, the second wide part is positioned in the second nut, a sixth sealing ring is connected between the second wide part and the end face of the other end of the valve body, the sixth sealing ring abuts against the end face of the other end of the inner lining of the water outlet pipe, and the second protruding part abuts against the second step face; by adopting the structure, the first joint and the water inlet pipe lining, the second joint and the water outlet pipe lining are stably connected by adopting the threads on the first nut, the first protruding part, the threads on the second nut and the second protruding part, and the fifth sealing ring and the sixth sealing ring are respectively arranged to strengthen the tightness.

As an improvement, an annular third protruding part is connected to the peripheral wall of the other end of the inner liner of the water inlet pipe along the circumferential direction, a first counter bore coaxial with the inner cavity of the valve body is arranged on the end surface of one end of the valve body, the third protruding part is positioned in the first counter bore, an annular fourth protruding part is connected to the peripheral wall of the other end of the inner liner of the water outlet pipe along the circumferential direction, a second counter bore coaxial with the inner cavity of the valve body is arranged on the end surface of the other end of the valve body, and the fourth protruding part is positioned in the second counter bore; by adopting the structure, the sealing pressure of the end face of the other end of the water inlet pipe lining and the end face of the other end of the water outlet pipe lining is ensured.

As an improvement, a first back-off is connected to the outer peripheral wall of the inner liner of the water inlet pipe, an annular fifth protruding part is arranged on the inner wall of one end of the valve body along the circumferential direction, the fifth protruding part is positioned on the outer side of the first back-off and is propped against the first back-off, a second back-off is connected to the outer peripheral wall of the inner liner of the water outlet pipe, an annular sixth protruding part is arranged on the inner wall of the other end of the valve body along the circumferential direction, and the sixth protruding part is positioned on the outer side of the second back-off and is propped against the second back-off; by adopting the structure, the water inlet pipe lining and the water outlet pipe lining are prevented from being pushed out of the installation position by the reverse thrust generated by the extrusion deformation of the first sealing ring and the second sealing ring before formal installation, so that the connection is stable.

As an improvement, a fifth annular groove is formed in the peripheral wall of one end of the water inlet pipe lining, a third back-off is arranged on the inner wall of one end of the main lining, the third back-off is clamped in the fifth annular groove, a sixth annular groove is formed in the peripheral wall of one end of the water outlet pipe lining, a fourth back-off is arranged on the inner wall of the other end of the main lining, and the fourth back-off is clamped in the sixth annular groove; by adopting the structure, the water inlet pipe lining and the water outlet pipe lining are prevented from being pushed out of the installation position by the reverse thrust generated by the extrusion deformation of the first sealing ring and the second sealing ring before formal installation, so that the connection is stable.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a partial enlarged view of the portion a in fig. 1.

Fig. 3 is a partial enlarged view of the portion B in fig. 1.

Reference numerals: 1. a valve body; 2. a filter flask; 3. an extension; 4. a main liner; 5. a water inlet pipe lining; 6. a water outlet pipe lining; 7. a first seal ring; 8. a second seal ring; 9. a third seal ring; 10. a fourth seal ring; 11. a first joint; 111. a first wide portion; 112. a first narrow portion; 113. a first step surface; 12. a first nut; 13. a first protrusion; 14. a fifth seal ring; 15. a second joint; 151. a second wide portion; 152. a second narrow portion; 153. a second step surface; 16. a second nut; 17. a second protruding portion; 18. a sixth seal ring; 19. a third protrusion; 20. a first counterbore; 21. a fourth protrusion; 22. a second counterbore; 23. a first back-off; 24. a fifth protruding portion; 25. a second back-off; 26. a sixth protruding portion; 27. a fifth annular groove; 28. a third back-off; 29. a sixth annular groove; 30. and fourth back-off.

Detailed Description

The lead isolation structure of a prefilter according to the present utility model will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 3, a lead-isolation structure of a pre-filter comprises a valve body 1 and a filter flask 2, wherein an extension part 3 is arranged on the outer wall of the valve body 1, a mounting hole communicated with an inner cavity of the valve body 1 is axially formed in the extension part 3, the filter flask 2 is connected in the mounting hole, the lead-isolation structure further comprises a main liner 4, a water inlet pipe liner 5 and a water outlet pipe liner 6, the main liner 4 is connected in the middle part of the valve body 1, the water inlet pipe liner 5 and the water outlet pipe liner 6 are connected in the valve body 1 and are respectively positioned at two ends of the valve body 1, one end of the water inlet pipe liner 5 is connected in the main liner 4, a first sealing ring 7 is connected between the outer wall of the water inlet pipe liner 5 and the inner wall of the main liner 4, one end of the water outlet pipe liner 6 is connected in the main liner 4, a second sealing ring 8 is connected between the outer peripheral wall of one end of the water inlet pipe liner 5 and the main liner 4, a second annular groove is formed between the outer peripheral wall of one end of the water outlet pipe liner 6 and the main liner 4, the first sealing ring 7 is positioned in the first annular groove, and the second sealing ring 8 is positioned in the second annular groove; the first annular groove and the second annular groove in this embodiment are provided on the inlet pipe liner 5 and the outlet pipe liner 6, respectively.

As shown in fig. 1, a part of the main liner 4 is positioned in the mounting hole, a third sealing ring 9 is connected between the main liner and the inner wall of the mounting hole, and the third sealing ring 9 abuts against the upper end face of the filter flask 2; specifically, the extension part 3 is positioned at the lower part of the outer wall of the valve body 1, the lower end of the main lining 4 is positioned in the extension part 3, a third annular groove is arranged between the inner wall of the extension part 3 and the outer peripheral wall of the lower end of the main lining 4, and the third sealing ring 9 is positioned in the third annular groove; in addition, a fourth sealing ring 10 is connected between the outer wall of the filter flask 2 and the inner wall of the mounting hole, a fourth annular groove is arranged between the outer wall of the filter flask 2 and the inner wall of the mounting hole, the fourth sealing ring 10 is positioned in the fourth annular groove, and the fourth sealing ring 10 is positioned below the third sealing ring 9; the first sealing ring 7, the second sealing ring 8, the third sealing ring 9 and the fourth sealing ring 10 in this embodiment are all O-rings made of rubber materials.

As shown in fig. 1 and 2, an end face of one end of the valve body 1 is connected with a first joint 11, an outer peripheral wall of one end of the valve body 1 is in threaded connection with a first nut 12, an annular first protruding part 13 is connected to an inner wall of one end, far away from the valve body 1, of the first nut 12, the first joint 11 comprises a first wide part 111 and a first narrow part 112 which are connected with each other, a first step surface 113 is formed between the first wide part 111 and the first narrow part 112, the first wide part 111 is positioned in the first nut 12, a fifth sealing ring 14 is connected between the first wide part 111 and the end face of one end of the valve body 1, the fifth sealing ring 14 abuts against the end face of the other end of the water inlet pipe 5, and the first protruding part 13 abuts against the first step surface 113; a third annular protruding part 19 is connected to the outer peripheral wall of the other end of the water inlet pipe lining 5 along the circumferential direction, the third protruding part 19 is flush with the end surface of the other end of the water inlet pipe lining 5, a first counter bore 20 coaxial with the inner cavity of the valve body 1 is arranged on the end surface of one end of the valve body 1, and the third protruding part 19 is positioned in the first counter bore 20; the outer peripheral wall of the water inlet pipe lining 5 is connected with a plurality of first back-ups 23, in this embodiment, the first back-ups 23 are circumferentially equidistant along the outer peripheral wall of the water inlet pipe lining 5, an annular fifth protruding portion 24 is circumferentially arranged on the inner wall of one end of the valve body 1, the fifth protruding portion 24 is located on the outer side of the first back-ups 23, the fifth protruding portion 24 is propped against the first back-ups 23, and the first counter bore 20 extends to the fifth protruding portion 24; the outer peripheral wall of one end of the water inlet pipe lining 5 is provided with a fifth annular groove 27, the inner wall of one end of the main lining 4 is provided with a third back-off 28, the third back-off 28 is clamped in the fifth annular groove 27, and similarly, the third back-off 28 is also a plurality of and is circumferentially equidistant along the inner peripheral wall of the main lining 4.

As shown in fig. 1 and 3, the end face of the other end of the valve body 1 is connected with a second joint 15, the peripheral wall of the other end of the valve body 1 is in threaded connection with a second nut 16, an annular second protruding part 17 is connected on the inner wall of one end of the second nut 16 far away from the valve body 1, the second joint 15 comprises a second wide part 151 and a second narrow part 152 which are mutually connected, a second step surface 153 is formed between the second wide part 151 and the second narrow part 152, the second wide part 151 is positioned in the second nut 16, a sixth sealing ring 18 is connected between the second wide part 151 and the end face of the other end of the valve body 1, the sixth sealing ring 18 abuts against the end face of the other end of the water outlet pipe lining 6, and the second protruding part 17 abuts against the second step surface 153; a fourth annular protruding part 21 is connected to the peripheral wall of the other end of the water outlet pipe lining 6 along the circumferential direction, the fourth protruding part 21 is flush with the end surface of the other end of the water outlet pipe lining 6, a second counter bore 22 coaxial with the inner cavity of the valve body 1 is arranged on the end surface of the other end of the valve body 1, and the fourth protruding part 21 is positioned in the second counter bore 22; the outer peripheral wall of the water outlet pipe lining 6 is connected with a plurality of second back-ups 25, in this embodiment, the second back-ups 25 are distributed along the circumferential direction of the outer peripheral wall of the water outlet pipe lining 6 at equal intervals, the inner wall of the other end of the valve body 1 is provided with a sixth annular protruding part 26 along the circumferential direction, the sixth protruding part 26 is positioned at the outer side of the second back-ups 25, and the sixth protruding part 26 is propped against the second back-ups 25, wherein the second counter bore 22 extends to the sixth protruding part 26; the outer peripheral wall of one end of the water outlet pipe lining 6 is provided with a sixth annular groove 29, the inner wall of the other end of the main lining 4 is provided with a fourth back-off 30, the fourth back-off 30 is clamped in the sixth annular groove 29, and similarly, the number of the fourth back-off 30 is also a plurality of and distributed on the inner peripheral wall of the main lining 4 along the circumferential direction at equal intervals.

According to the utility model, the main lining 4, the water inlet pipe lining 5 and the water outlet pipe lining 6 are arranged to isolate water from the valve body 1, in addition, the tightness between the main lining 4 and the water inlet pipe lining 5 and between the water outlet pipe lining 6 is enhanced through the first sealing ring 7 and the second sealing ring 8, and the extension part 3 of the valve body 1 is separated from the main lining 4 and the filter flask 2 through the third sealing ring 9, so that the water is prevented from being polluted due to contact with the valve body 1.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above-described one embodiment, and all other examples obtained by those skilled in the art without making any inventive effort are within the scope of the present utility model.

Claims

1. The utility model provides a lead structure separates of leading filter, includes valve body (1) and filter flask (2), be equipped with extension (3) on valve body (1) outer wall, be equipped with on extension (3) along the axial with the mounting hole of valve body (1) inner chamber intercommunication, filter flask (2) are connected in the mounting hole, its characterized in that still includes main inside lining (4), inlet tube inside lining (5) and outlet pipe inside lining (6), main inside lining (4) are connected in valve body (1), inlet tube inside lining (5) with outlet pipe inside lining (6) all connect in valve body (1) and be located respectively valve body (1) both ends, inlet tube inside lining (5) one end is connected in main inside lining (4), inlet tube inside lining (5) outer wall with be connected with first sealing washer (7) between main inside lining (4) inner wall, outlet pipe inside lining (6) one end is connected with second inside lining (8) outer wall with between main inside lining (4) inner wall, first sealing washer (9) and the inside lining (9) are located in the inside lining (9) and the mounting hole.

2. The lead isolation structure of the pre-filter according to claim 1, wherein a first annular groove is arranged between the outer peripheral wall of one end of the water inlet pipe lining (5) and the main lining (4), a second annular groove is arranged between the outer peripheral wall of one end of the water outlet pipe lining (6) and the main lining (4), the first sealing ring (7) is positioned in the first annular groove, and the second sealing ring (8) is positioned in the second annular groove.

3. The lead isolation structure of the pre-filter according to claim 1, wherein the extension part (3) is located at the lower part of the outer wall of the valve body (1), the lower end of the main lining (4) is located in the extension part (3), a third annular groove is formed between the inner wall of the extension part (3) and the outer peripheral wall of the lower end of the main lining (4), and the third sealing ring (9) is located in the third annular groove.

4. Lead isolation structure of a prefilter according to claim 1, characterized in that a fourth sealing ring (10) is connected between the outer wall of the filter flask (2) and the inner wall of the mounting hole.

5. The lead separating structure of the pre-filter according to claim 4, wherein a fourth annular groove is arranged between the outer wall of the filter flask (2) and the inner wall of the mounting hole, and the fourth sealing ring (10) is positioned in the fourth annular groove.

6. The lead isolation structure of the pre-filter according to claim 1, wherein an end face of one end of the valve body (1) is connected with a first joint (11), an outer peripheral wall of one end of the valve body (1) is in threaded connection with a first nut (12), an annular first protruding part (13) is connected to an inner wall of one end, far away from the valve body (1), of the first nut (12), the first joint (11) comprises a first wide part (111) and a first narrow part (112) which are connected with each other, a first step surface (113) is formed between the first wide part (111) and the first narrow part (112), the first wide part (111) is positioned in the first nut (12) and is connected with a fifth sealing ring (14) between the first wide part and the end face of one end of the valve body (1), the fifth sealing ring (14) abuts against the end face of the other end of the water inlet pipe lining (5), and the first protruding part (13) abuts against the first step surface (113); the valve body (1) other end terminal surface is connected with second joint (15), the peripheral wall and the second nut (16) threaded connection of valve body (1) other end, second nut (16) are kept away from be connected with annular second protruding portion (17) on the inner wall of the one end of valve body (1), second joint (15) are including interconnect's second wide portion (151) and second narrow portion (152), second wide portion (151) with form second step face (153) between second narrow portion (152), second wide portion (151) are located in second nut (16) and with be connected with sixth sealing washer (18) between valve body (1) other end terminal surface, sixth sealing washer (18) with outlet pipe inside lining (6) other end terminal surface offsets, second protruding portion (17) with second step face (153) offsets.

7. The lead isolation structure of the pre-filter according to claim 6, wherein an annular third protruding portion (19) is connected to the outer peripheral wall of the other end of the water inlet pipe lining (5) along the circumferential direction, a first counter bore (20) coaxial with the inner cavity of the valve body (1) is arranged on the end face of one end of the valve body (1), the third protruding portion (19) is located in the first counter bore (20), an annular fourth protruding portion (21) is connected to the outer peripheral wall of the other end of the water outlet pipe lining (6) along the circumferential direction, a second counter bore (22) coaxial with the inner cavity of the valve body (1) is arranged on the end face of the other end of the valve body (1), and the fourth protruding portion (21) is located in the second counter bore (22).

8. The lead isolation structure of the pre-filter according to any one of claims 1 to 7, wherein a first back-off (23) is connected to the outer peripheral wall of the water inlet pipe lining (5), an annular fifth protruding portion (24) is circumferentially arranged on the inner wall of one end of the valve body (1), the fifth protruding portion (24) is located on the outer side of the first back-off (23) and the fifth protruding portion (24) abuts against the first back-off (23), a second back-off (25) is connected to the outer peripheral wall of the water outlet pipe lining (6), an annular sixth protruding portion (26) is circumferentially arranged on the inner wall of the other end of the valve body (1), and the sixth protruding portion (26) is located on the outer side of the second back-off (25) and abuts against the second back-off (25).

9. The lead isolation structure of the pre-filter according to any one of claims 1 to 7, wherein a fifth annular groove (27) is formed in the outer peripheral wall of one end of the water inlet pipe lining (5), a third back-off buckle (28) is arranged on the inner wall of one end of the main lining (4), the third back-off buckle (28) is clamped in the fifth annular groove (27), a sixth annular groove (29) is formed in the outer peripheral wall of one end of the water outlet pipe lining (6), a fourth back-off buckle (30) is arranged on the inner wall of the other end of the main lining (4), and the fourth back-off buckle (30) is clamped in the sixth annular groove (29).