CN210005173U

CN210005173U - internal expansion type air tightness plugging device

Info

Publication number: CN210005173U
Application number: CN201920811252.0U
Authority: CN
Inventors: 袁为民; 赖辉; 陈建璀; 刘军; 王志军
Original assignee: Huizhou Green Protection Technology Co Ltd
Current assignee: Huizhou Green Protection Technology Co Ltd
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-01-31
Anticipated expiration: 2029-05-31

Abstract

The utility model relates to an internal expanding type gas tightness plugging device, including the air inlet head of the hollow structure that the air feed body got into, set up at the inside seal chamber of air inlet head, connect the head of screwing that is used for locking seal chamber in the air inlet head of air inlet head tip, be provided with the through hole in screwing, seal chamber's end connection is in the through hole, is provided with elastic ring in the through hole, and through hole is provided with the spacing portion of restriction elastic ring position for seal chamber's end inner wall in addition, the utility model discloses set up air inlet head, seal chamber and the head of screwing, set up the elastic ring simultaneously between seal chamber and the tip of screwing the head, can insert the elastic ring by the detected object, when gaseous medium enters into inside from the air inlet head, promote seal chamber extrusion elastic ring and realize quick simple and easy and simple to handle, improved work efficiency, sealed effectual simultaneously to the accuracy of gas tightness test has been guaranteed.

Description

internal expansion type air tightness plugging device

Technical Field

The utility model relates to a fuel cell production and processing technology field, concretely relates to kinds of interior bloated type gas tightness plugging device.

Background

The airtightness detection is a quality control application developed for improving the airtightness of airplanes, automobile shells, ships and internal containers, and is used for improving the airtightness of vehicles, aircrafts, ships and the like in a transportation department , a military department and basic industries, the airtightness detection is an essential detection process in the industries of automobile manufacturing, battery manufacturing and the like, the airtightness detection is high in required precision, and in the traditional detection process, generally adopts a method that a thread plug is wound with a raw material belt, and is manually screwed by a worker for plugging, the speed is low during installation, a large amount of time is usually consumed, meanwhile, the randomness is high during installation, the screwing is not tight, or the connection between the thread, the raw material belt and a detected object is not tight, so that the airtightness detection is abnormal, the accuracy of the detection result of the detected object is influenced, the quality judgment of the detected object by the worker is inaccurate, the detection of repeated times is usually required, the efficiency is low, and the production cost is invisibly increased.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides an internal expanding type gas tightness plugging device.

The utility model discloses a following scheme realizes:

internal expansion type airtight plugging device comprises an air inlet head of a hollow structure for air to enter, a sealing cavity arranged inside the air inlet head, and a screwing head connected to the end part of the air inlet head and used for locking the sealing cavity in the air inlet head, wherein a through hole is formed in the screwing head, the end part of the sealing cavity is connected into a 0 through hole, a elastic ring is arranged in a 1 through hole, a limiting part for limiting the position of the elastic ring is arranged on the inner wall of the through hole relative to the other end of the sealing cavity, bosses are arranged on the outer wall of the sealing cavity, a end of the air inlet head connected with the screwing head is defined as a end part, the other opposite end is a second end, an air inlet hole communicated with the inside is arranged at the second end of the air inlet head, and a second through hole is arranged inside the sealing cavity.

, a end of the sealed cavity connected with the air inlet head is sleeved with a sealing ring, a end of the sealed cavity connected with the screwing head is internally sleeved with a second sealing ring, and a boss is provided with a third sealing ring.

, a mounting groove for mounting a sealing ring is arranged at the position where the outer wall of the sealing cavity corresponds to the sealing ring, a second mounting groove for mounting a second sealing ring is arranged at the position where the outer wall of the sealing cavity corresponds to the second sealing ring, and a third mounting groove for mounting a third sealing ring is arranged on the boss.

, a gasket is arranged between the elastic ring and the sealing cavity, and a second gasket is arranged between the elastic ring and the limiting part.

, the elastic ring is an elastic silica gel ring.

, the hollow part of the inlet head is a step structure, including the step part for connecting the screwing head, the second step part for accommodating the boss, and the third step part for connecting the end of the sealed cavity.

And , connecting the screwing head with the air inlet head through screw threads.

Contrast prior art, the utility model discloses following beneficial effect has:

the utility model discloses set up the head of admitting air, seal chamber and the head of screwing, set up the elastic ring simultaneously between seal chamber and the tip of the head of screwing, during the detected object can insert the elastic ring, when gaseous medium enters into inside from the head of admitting air, promote seal chamber extrusion elastic ring and realize quick sealing, the erection joint is quick and easy and simple to handle, reduced the installation degree of difficulty, improved work efficiency, it is simultaneously sealed effectual, holistic gas tightness has been guaranteed to the accuracy of gas tightness test has been guaranteed.

Drawings

Fig. 1 is an exploded view of an embodiment of internal-expansion-type airtight sealing devices provided by the present invention.

Fig. 2 is a sectional view of the present embodiment.

Fig. 3 is a structural view of the intake head of the present embodiment.

Fig. 4 is a structural diagram of the sealed cavity of the present embodiment.

Fig. 5 is a structural view of the screwing head of the present embodiment.

Fig. 6 is a perspective view of the present embodiment.

Detailed Description

To facilitate an understanding of the present invention by those skilled in the art, the present invention will be described in further detail with reference to specific embodiments and drawings.

Referring to fig. 1 to 6, the present invention provides a internal expansion type airtight sealing device, which includes an air inlet head 1 of a hollow structure for air to enter, a seal cavity 2 disposed inside the air inlet head, a screwing head 3 connected to an end portion of the air inlet head and used for locking the seal cavity in the air inlet head, the screwing head 3 is connected to the air inlet head 1 through a screw thread (a detailed structure of the screw thread is not shown in the drawings) the screwing head is provided with a through hole 31, an end portion of the seal cavity is connected to a through hole, a elastic ring 4 is disposed in the through hole, a limit portion 32 for limiting the position of the elastic ring is disposed on an inner wall of another end of the seal cavity in a through hole, an boss 21 is disposed on an outer wall of the seal cavity 2, an end portion is defined at an end portion of the end of the air inlet head connected to the screwing head, an opposite end portion is a second end portion, a second end of the air inlet head is provided with an air inlet hole 11 communicating with an inside , and a second through hole 22 is disposed inside the.

The end of the seal cavity 2 connected with the air inlet head 1 is sleeved with a seal ring 23, the end of the seal cavity connected with the screwing head 3 is internally sleeved with a second seal ring 24, and a boss is provided with a third seal ring 25.

The position department that seal chamber 2 outer wall and sealing washer correspond is provided with the mounting groove 26 that is used for installing the sealing washer 23, and the position department that seal chamber outer wall and second sealing washer correspond is provided with the second mounting groove 27 that is used for installing the second sealing washer 24, be provided with the third mounting groove 28 that is used for installing the third sealing washer on the boss 21.

An th gasket 5 is arranged between the elastic ring 4 and the seal cavity 2, and a second gasket 6 is arranged between the elastic ring and the limiting part 32. the th gasket and the second gasket are matched with the elastic ring in size and can tightly press the elastic ring from two ends.

The hollow part of the air inlet head 1 is of a step structure and comprises a step part 12 used for being connected with a screwing head, a second step part 13 used for accommodating a boss and a third step part 14 used for being connected with the end part of a sealing cavity body.

The utility model discloses a work according to pressure/inflation principle, when using, it inserts inside (the elastic ring cover is being detected the object periphery side this moment) from screwing the head side to be detected the object, the air inlet head with screw first screw-thread fastening, compressed air gets into seal chamber by the inlet port of air inlet head, air inflation makes seal chamber move toward the first direction of screwing, make the elastic ring toward the internal expansion through the extrusion gasket, and then the inner wall of elastic ring closely with being detected the object laminating, the realization is sealed to being detected the object.

The utility model discloses set up air inlet head, seal chamber and the head of screwing, set up the elastic ring simultaneously between seal chamber and the tip of the head of screwing, detected the object and can insert the elastic ring, when gaseous medium enters into inside from the air inlet head, promote seal chamber extrusion elastic ring and realize quick sealing, the erection joint is quick and easy and simple to handle, has improved work efficiency, and is sealed effectual simultaneously, has guaranteed holistic gas tightness to the accuracy of gas tightness test has been guaranteed.

In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Thus, a feature defined as "", "second" may explicitly or implicitly include or more of that feature.

In the present invention, unless otherwise specifically stated or limited, the terms "connected" and "fixed" shall be understood to mean , for example, they may be fixedly connected, detachably connected, or , mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, connected between two elements, or interacting between two elements.

While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the scope of the included claims.

Claims

The internal expansion type airtight sealing device is characterized by comprising an air inlet head (1) with a hollow structure for air to enter, a sealing cavity (2) arranged in the air inlet head, and a screwing head (3) connected to the end part of the air inlet head and used for locking the sealing cavity in the air inlet head, wherein a through hole (31) is formed in the screwing head, the end part of the sealing cavity is connected into a 0 through hole, a elastic ring (4) is arranged in a 1 through hole, a through hole is provided with a limit part (32) for limiting the position of the elastic ring by relative to the inner wall of the other end of the sealing cavity, the outer wall of the sealing cavity (2) is provided with a boss (21), the end of the air inlet head connected with the screwing head is defined as a end, the other end opposite to the end is a second end, the second end of the air inlet head is provided with an air inlet hole (11) communicated with the inside, and a second through hole (22.
2. The internal-expansion type airtight plugging device is characterized in that a sealing ring (23) is sleeved at the end of the sealing cavity (2) connected with the air inlet head (1), a second sealing ring (24) is sleeved at the end of the sealing cavity connected with the screwing head (3), and a third sealing ring (25) is arranged on the boss.
3. An internal-expansion type airtight sealing device according to claim 2, wherein a mounting groove (26) for mounting a sealing ring (23) is provided at a position of the outer wall of the sealing cavity (2) corresponding to the sealing ring, a second mounting groove (27) for mounting a second sealing ring (24) is provided at a position of the outer wall of the sealing cavity corresponding to the second sealing ring, and a third mounting groove (28) for mounting a third sealing ring is provided on the boss (21).
4. The internal-expansion-type airtight sealing device according to claim 1, wherein a -th gasket (5) is arranged between the elastic ring (4) and the sealed cavity (2), and a second gasket (6) is arranged between the elastic ring and the limiting part (32).
5. The internal-expansion type airtight plugging device according to claim 1, wherein the elastic ring (4) is an elastic silicone ring.
6. The internal-expansion-type airtight blocking device according to claim 1, wherein the hollow part of the air inlet head (1) is of a step structure, and comprises an th step part (12) for connecting the screwing head, a second step part (13) for accommodating the boss and a third step part (14) for connecting the end part of the sealed cavity.
7. The inflatable airtight blocking device of claim 1, wherein the screwing head (3) is connected with the air inlet head (1) by screw thread.