CN219830201U

CN219830201U - Leak detection device for balancing air pressure inside and outside sealed cavity

Info

Publication number: CN219830201U
Application number: CN202321106561.0U
Authority: CN
Inventors: 黄霖
Original assignee: Shunkang Hangzhou Scientific Instrument Co ltd
Current assignee: Shunkang Hangzhou Scientific Instrument Co ltd
Priority date: 2023-05-09
Filing date: 2023-05-09
Publication date: 2023-10-13
Anticipated expiration: 2033-05-09

Abstract

The utility model provides a leak hunting device for balanced airtight cavity internal and external atmospheric pressure, includes leak hunting valve body, leak hunting valve piston and leak hunting valve sealing ring, leak hunting valve body one side is equipped with first cavity, first cavity is equipped with first opening, the opposite side that the leak hunting valve body set up first opening is equipped with the pressure regulating mouth, the inside first cavity of leak hunting valve body is located to the leak hunting valve piston, leak hunting valve sealing ring seals first opening, be equipped with elastic component between leak hunting valve piston and the leak hunting valve sealing ring for promote leak hunting valve piston and pressure regulating mouth offset, the reset structure of push type that adopts, its structure is also simpler for the leak hunting device of mainstream, small and light in weight utilizes leak hunting valve piston and leak hunting sealing ring cooperation, can realize the test to the gas tightness of endoscope mirror body and to the balance of the internal and external atmospheric pressure of mirror, can improve product use durability and structural stability.

Description

Leak detection device for balancing air pressure inside and outside sealed cavity

Technical Field

The utility model relates to the technical field of endoscope leak detection, in particular to a leak detection device for balancing the air pressure inside and outside a closed cavity.

Background

The leak detection valve is provided for the endoscope to control leakage of gas or liquid in the endoscope system and to ensure safety and effect of the operation of the endoscope. The following is the main function of the endoscope with the leak detection valve:

1. leakage control: endoscopic procedures typically require the use of a gas or liquid as an inflation or irrigation medium to maintain the distended state of the endoscope lumen. The leak detection valve can effectively control the leakage of gas or liquid in the endoscope system, prevent unnecessary loss of gas or liquid, and thus maintain the stable state of the endoscope cavity.

2. Safety: in endoscopic surgery, leaking gas or liquid may cause unclear surgical fields, affecting the visibility and accuracy of the surgery. By arranging the leak detection valve, leakage can be reduced, the safety of operation is improved, and the operation risk is reduced.

3. The operation effect is as follows: endoscopic surgery requires elaborate manipulation and accurate visual feedback. The leaked gas or liquid may interfere with the procedure, affecting the outcome of the procedure. The leakage detection valve can effectively reduce leakage, ensure the stability and the high efficiency of the operation of the endoscope, and further improve the operation effect.

4. Environmental protection: the gas used in the endoscopic surgery is usually carbon dioxide, and the liquid is usually physiological saline or the like. The reasonable use of gas and liquid resources reduces leakage, which is helpful for environmental protection and resource conservation.

However, the track type leakage detection device generally adopted by the main flow leakage detection device related to the industry at present has large and heavy volume and weight, relatively complex structure, and can increase the overall weight of the endoscope body to a certain extent so as to increase the burden of a user, thereby causing the arm fatigue of the user.

Disclosure of Invention

In view of the shortcomings of the background technology, the utility model relates to a leakage detection device for balancing the internal and external air pressure of a closed cavity, and the adopted push-type reset structure is simpler in structure compared with the main flow leakage detection device, small in size and light in weight, and can realize the air tightness test of an endoscope body and the balance of the internal and external air pressure of the endoscope body by utilizing the matching of a leakage detection valve piston and a leakage detection sealing ring, so that the service durability and the structural stability of a product can be improved.

The utility model relates to a leakage detection device for balancing the air pressure inside and outside a closed cavity, which comprises a leakage detection valve body, a leakage detection valve piston and a leakage detection valve sealing ring, wherein a first cavity is formed in one side of the leakage detection valve body, a first opening is formed in the first cavity, a pressure regulating opening is formed in the opposite side of the leakage detection valve body, the leakage detection valve piston is arranged in the first cavity of the leakage detection valve body, the leakage detection valve sealing ring seals the first opening, and an elastic component is arranged between the leakage detection valve piston and the leakage detection valve sealing ring and used for pushing the leakage detection valve piston to abut against the pressure regulating opening.

By adopting the scheme, the leakage detection valve piston is pressed against the leakage detection valve body under the action of the elastic component, so that the sealing effect is realized, and the sealing environment inside the endoscope is opened by pressing the leakage detection valve piston, so that the pressure regulating effect is realized.

Further, the leak detection valve body is provided with an external thread and a flange, a first sealing ring mounting groove is formed between the external thread and the flange, and a first sealing ring is mounted in the first sealing ring mounting groove.

Through adopting above-mentioned scheme, the convenient installation of leak hunting device of external screw thread, the airtight of side leak hunting device mounted position is guaranteed to the flange, prevents that mounted position from being polluted, and the installation of first sealing washer improves the gas tightness between leak hunting valve body and the endoscope.

Further, the leak detection valve sealing ring is provided with a second sealing ring mounting groove, and the second sealing ring is mounted in the second sealing ring mounting groove.

By adopting the scheme, the air tightness between the leak detection valve sealing ring and the first cavity of the leak detection valve body is ensured.

Further, a third sealing ring mounting groove is formed in one side, facing the valve body of the leakage detection valve, of the leakage detection valve piston, and a third sealing ring is mounted in the third sealing ring mounting groove.

By adopting the scheme, the air tightness of the side, propped against the leakage detection valve body, of the leakage detection valve piston is ensured.

Further, the leak hunting valve sealing ring is kept away from leak hunting valve body one side and is equipped with annular bulge, the protruding cover of annular is equipped with the fourth sealing washer, annular bulge connects fourth sealing washer one side and is equipped with unidirectional dialyzing paper and gasket in proper order.

Through adopting above-mentioned scheme, the fourth sealing washer guarantees the leveling of one-way dialyzing paper laminating department, improves the gas tightness of the first opening side of leak hunting valve body simultaneously.

Further, the U-shaped piece is arranged at the first opening of the leakage detection valve body, penetrates through the side wall of the leakage detection valve body and is used for clamping the gasket.

By adopting the scheme, the gasket is limited, and the gasket is prevented from being ejected out under the action of the elastic component.

Further, the elastic member is a spring.

By adopting the scheme, the spring is low in cost and convenient for mass production of the side leakage device.

Drawings

FIG. 1 is a schematic diagram of an explosive structure according to embodiment 1 of the present utility model;

fig. 2 is a schematic cross-sectional structure of embodiment 1 of the present utility model.

Reference numerals: 1. a leak detection valve body; 11. a first cavity; 12. a first opening; 13. a pressure regulating port; 14. an external thread; 15. a first seal ring mounting groove; 16. a flange; 17. a first seal ring; 2. a leak detection valve piston; 21. a pressure regulating bump; 22. a third seal ring mounting groove; 23. a third seal ring; 24. a second cavity; 25. a second opening; 3. a leak detection valve sealing ring; 31. a second seal ring mounting groove; 32. a second seal ring; 33. an annular protrusion; 34. a fourth seal ring; 4. an elastic member; 5. unidirectional dialyzing paper; 6. a gasket; 7. u-shaped sheet.

Detailed Description

The following description and the discussion of the embodiments of the present utility model will be made more complete and less in view of the accompanying drawings, in which it is to be understood that the utility model is not limited to the embodiments of the utility model disclosed and that it is intended to cover all such modifications as fall within the scope of the utility model.

For the purpose of facilitating an understanding of the embodiments of the present utility model, reference will now be made to the drawings, by way of example, of specific embodiments, and the various embodiments should not be construed to limit the embodiments of the utility model.

Embodiment 1 of the present utility model is shown with reference to fig. 1-2, and relates to a leak detection device for balancing the air pressure inside and outside a closed cavity, comprising a leak detection valve body 1, a leak detection valve piston 2 and a leak detection valve sealing ring 3.

The leak hunting valve body 1 one side is equipped with first cavity 11, first cavity 11 is equipped with first opening 12, the contralateral that leak hunting valve body 1 set up first opening 12 is equipped with pressure regulating mouth 13, leak hunting valve piston 2 locates inside the first cavity 11 of leak hunting valve body 1, leak hunting valve sealing ring 3 seals first opening 12, be equipped with elastic component 4 between leak hunting valve piston 2 and the leak hunting valve sealing ring 3 for promote leak hunting valve piston 2 and leak hunting valve body 1 offset.

Wherein the elastic member 4 may be a spring.

The leakage detection valve piston 2 is provided with a second cavity 24, the second cavity 24 is provided with a second opening 25, the direction of the second opening 25 is the same as that of the first opening 12 relative to the leakage detection valve body 1, the elastic component 4 is arranged in the second cavity 24, the other end of the elastic component abuts against the leakage detection valve sealing ring 3, the opposite side of the leakage detection valve piston 2 where the second opening 25 is arranged is provided with a pressure regulation lug 21, the pressure regulation lug 21 is attached to the pressure regulation opening 13 in a closed state, the outer surface of the pressure regulation lug is flush, on one hand, the air tightness is improved, and meanwhile, the leakage detection valve piston 2 is not easy to be touched by mistake.

The leak detection valve body 1 is provided with an external thread 14 and a flange 16, a first sealing ring mounting groove 15 is arranged between the external thread 14 and the flange 16, a first sealing ring 17 is mounted in the first sealing ring mounting groove 15, the external thread 14 facilitates the mounting of the leak detection device, the flange 16 ensures the tightness of the mounting position of the side leakage detection device, the mounting position is prevented from being polluted, and the mounting of the first sealing ring 17 improves the air tightness between the leak detection valve body 1 and an endoscope.

The leak detection valve sealing ring 3 is provided with a second sealing ring mounting groove 31, and the second sealing ring mounting groove 31 is provided with a second sealing ring 32. The leak hunting valve sealing ring 3 is kept away from leak hunting valve body 1 one side and is equipped with annular bulge 33, annular bulge 33 cover is equipped with fourth sealing washer 34, annular bulge 33 connects fourth sealing washer 34 one side and is equipped with unidirectional dialysis paper 5 and gasket 6 in proper order, unidirectional dialysis paper 5 can realize that unidirectional flow, leakage control, accurate control flow and the cross infection that prevents of gas and liquid, gasket 6 guarantees the roughness with the contact of U type piece 7, improves the gas tightness.

The second sealing ring 32 ensures the air tightness between the leak detection valve sealing ring 3 and the first cavity 11 of the leak detection valve body 1, and the fourth sealing ring 34 adjusts the flatness of the joint of the leak detection valve sealing ring 3 and the unidirectional dialyzing paper 5 on the one hand, and further improves the air tightness of the first opening 12 side of the leak detection valve body 1 on the other hand.

The connection part of the pressure regulating lug 21 and the leak detection valve piston 2 is provided with a third sealing ring mounting groove 22, the third sealing ring mounting groove 22 is provided with a third sealing ring 23, and the third sealing ring 23 is used for guaranteeing the air tightness of the pressure regulating lug 21 and the pressure regulating port 13.

The U-shaped sheet 7 is installed at the first opening 12 of the leak detection valve body 1, and the U-shaped sheet 7 penetrates through the side wall of the leak detection valve body 1 and is used for clamping the gasket 6, limiting the gasket 6, preventing the gasket 6 from being ejected under the action of the elastic component 4, and guaranteeing the air tightness in the first cavity 11.

The working principle of the utility model is as follows:

the leakage detection valve piston 2 is pressed against the leakage detection valve body 1 by the elastic member 4, the leakage detection valve sealing ring 3 is retracted at the first opening 12 to realize the sealing effect, and the pressure regulation effect is realized by pressing the leakage detection valve piston 2 to open the sealing environment inside the endoscope.

Finally, it should be noted that: the above examples are only specific embodiments of the present utility model, and are not intended to limit the scope of the present utility model, but it should be understood by those skilled in the art that the present utility model is not limited thereto, and that the present utility model is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and are intended to be included in the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A leak hunting device for balanced airtight cavity internal and external atmospheric pressure, its characterized in that: including leak hunting valve body (1), leak hunting valve piston (2) and leak hunting valve sealing ring (3), leak hunting valve body (1) one side is equipped with first cavity (11), first cavity (11) are equipped with first opening (12), the offside that leak hunting valve body (1) set up first opening (12) is equipped with pressure regulating mouth (13), inside first cavity (11) of leak hunting valve body (1) are located to leak hunting valve piston (2), leak hunting valve sealing ring (3) seal first opening (12), be equipped with elastic component (4) between leak hunting valve piston (2) and the leak hunting valve sealing ring (3) for promote leak hunting valve piston (2) and pressure regulating mouth (13) offset.

2. The leak detection apparatus for balancing air pressure inside and outside a closed cavity according to claim 1, wherein: the leak detection valve body (1) is provided with an external thread (14) and a flange (16), a first sealing ring mounting groove (15) is arranged between the external thread (14) and the flange (16), and a first sealing ring (17) is mounted in the first sealing ring mounting groove (15).

3. The leak detection apparatus for balancing the air pressure inside and outside a closed cavity according to claim 2, wherein: the leak detection valve sealing ring (3) is provided with a second sealing ring mounting groove (31), and the second sealing ring mounting groove (31) is provided with a second sealing ring (32).

4. A leak detection apparatus for equalizing gas pressure inside and outside a closed chamber as defined in claim 3, wherein: the leak detection valve piston (2) is provided with a third sealing ring (23) mounting groove (22) towards one side of the leak detection valve body (1), and the third sealing ring (23) is mounted in the third sealing ring (23) mounting groove (22).

5. The leak detection apparatus for equalizing gas pressure inside and outside a closed chamber as defined in claim 4, wherein: the leakage detection valve sealing ring (3) is provided with an annular bulge (33) on one side far away from the leakage detection valve body (1), the annular bulge (33) is sleeved with a fourth sealing ring (34), and one side, connected with the fourth sealing ring (34), of the annular bulge (33) is sequentially provided with unidirectional dialyzing paper (5) and a gasket (6).

6. The leak detection apparatus for equalizing gas pressure inside and outside a closed chamber as defined in claim 5, wherein: the U-shaped sheet (7) is arranged at the first opening (12) of the leak detection valve body (1), and the U-shaped sheet (7) penetrates through the side wall of the leak detection valve body (1) and is used for being clamped with the gasket (6).

7. The leak detection apparatus for balancing air pressure inside and outside a closed cavity according to claim 1, wherein: the elastic member (4) is a spring.