CN208281591U - A kind of inflation self-sealing switching device - Google Patents
A kind of inflation self-sealing switching device Download PDFInfo
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- CN208281591U CN208281591U CN201820791857.3U CN201820791857U CN208281591U CN 208281591 U CN208281591 U CN 208281591U CN 201820791857 U CN201820791857 U CN 201820791857U CN 208281591 U CN208281591 U CN 208281591U
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- plug
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- inner ring
- screw thread
- cavity
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Abstract
The utility model relates to a kind of inflation self-sealing switching devices, it belongs to a kind of air seal test conversion adapter device that automatic inflating and pass gas are realized by inside and outside pressure difference.The utility model is mainly to solve existing manually-operated gate existing technical problem that is poorly sealed, revealing serious and leakage test accuracy difference when detecting under carrying out vessel water.The technical solution adopted in the utility model is: a kind of inflation self-sealing switching device, by housing, gasket, plug, inner ring and rubber pad composition, the rubber pad is located at the bottom of inner ring inner cavity, the lower part of the plug lateral surface and the top of interior ring inner surface are together by a threaded connection, the external screw thread that the middle part that the plug being connected and inner ring pass through plug lateral surface is arranged connect the middle and lower part for making inner ring be located at housing inner cavity with the internal screw thread that housing inner surface middle and upper part is arranged, the gasket is located on the circular table of housing inner cavity top setting and is located at below plug annular convex platform.
Description
Technical field
The utility model relates to a kind of inflation self-sealing switching devices, it belongs to a kind of automatic by the realization of inside and outside pressure difference
Inflation and the air seal test conversion adapter device for closing gas.
Background technique
The seal tightness test of pressure vessel must carry out detection test to gas is filled in container.Usually detection test is made
For the control of conventional manual valve, the detector with pressure display table is directly attached in the detection hole of container, passes through valve
Switch control inflation, to meet the size of test internal pressure value.But when detecting under needing to carry out vessel water, pressure display table cannot
Into in water, and control is carried out using manually-operated gate and easily causes the abrasion of valve, cause due to poorly sealed and revealed
Phenomenon influences the accuracy of leakage test.
Summary of the invention
The purpose of this utility model be solve existing manually-operated gate in detection under carrying out vessel water it is existing it is poorly sealed,
The technical problem for revealing serious and leakage test accuracy difference, provides a kind of inflation self-sealing switching device.
In order to solve the above technical problems, the technical solution adopted in the utility model is:
A kind of inflation self-sealing switching device, is made of, the rubber pad housing, gasket, plug, inner ring and rubber pad
It is located at the bottom of inner ring inner cavity, the lower part of the plug lateral surface and the top of interior ring inner surface are together by a threaded connection,
The plug being connected and inner ring are set by the external screw thread that the middle part of plug lateral surface is arranged with housing inner surface middle and upper part
The internal screw thread set connects the middle and lower part for making inner ring be located at housing inner cavity, and the gasket is located at the annular of housing inner cavity top setting
On table top and it is located at below plug annular convex platform.
Further, the housing is cylinder, and plug and inner ring can be accommodated by being equipped at the middle part of housing cylinder
Inner cavity, the middle and upper part of housing surface of internal cavity be equipped with internal screw thread, housing inner cavity top be equipped with circular table and be located at interior spiral shell
Above line, it is equipped with venthole at housing inner cavity lower end center, is equipped with external screw thread in the lower part of venthole outer surface.
Further, the plug is stepped cylinder, is equipped with venthole at the center of plug stepped cylinder,
The inner surface of venthole is equipped with internal screw thread, and external screw thread is equipped on the cylindrical outer surface of small ladder and middle ladder.
Further, the inner ring is cavity cylindrical body, venthole is equipped in the bottom of interior annular space chamber cylindrical body, in inner ring
The middle and upper part of cavity cylinder interior wall is equipped with several small ventholes, is equipped on the top of interior annular space chamber cylinder interior wall interior
Screw thread.
The utility model has the following beneficial effects:
Using the principle of inside and outside pressure difference, the inflation self-sealing switching device of no hand control valve is devised, in a device
It joined rubber gasket structure, the external pressure of inner ring is greater than internal pressure when inflation, and downward active force makes rubber pad be against inner ring bottom
Venthole on, the small venthole of interior ring-side wall is exposed, so that gas is filled in shell automatically；When gas reaches and wants in shell
When asking, stop inflation, internal pressure is greater than external pressure, and upward active force makes rubber pad be against inner ring top, seals inner ring middle and upper part
The venthole of side wall setting, achievees the effect that automatic-sealed.Therefore, compared with the background art, the utility model has structure letter
The advantage high with the accuracy of leakage test is sealed in list.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
The utility model will be further described with reference to the accompanying drawings and examples.
As shown in Figure 1, one of the present embodiment inflates self-sealing switching device, by housing 1, gasket 2, plug 3, interior
Ring 4 and rubber pad 5 form, and the rubber pad 5 is located at the bottom of 4 inner cavity of inner ring, the lower part of 3 lateral surface of plug and inner ring 4
The top of inner surface is together by a threaded connection, and the plug 3 being connected and inner ring 4 pass through in 3 lateral surface of plug
The external screw thread of portion's setting is connect under being located at inner ring 4 in 1 inner cavity of housing with the internal screw thread that 1 inner surface middle and upper part of housing is arranged
Portion, the gasket 2 are located on the circular table of 1 inner cavity top of housing setting and are located at below 3 annular convex platform of plug.
The housing 1 is cylinder, and being equipped at the middle part of 1 cylinder of housing can accommodate in plug 3 and inner ring 4
Chamber is equipped with internal screw thread in the middle and upper part of 1 surface of internal cavity of housing, is equipped with circular table on 1 inner cavity top of housing and is located at internal screw thread
Above, it is equipped with venthole at 1 inner cavity lower end center of housing, is equipped with external screw thread in the lower part of venthole outer surface.
The plug 3 is stepped cylinder, venthole is equipped at the center of 3 stepped cylinder of plug, in venthole
Inner surface be equipped with internal screw thread, on the cylindrical outer surface of small ladder and middle ladder be equipped with external screw thread in order to inner ring 4 and
Housing 1 connects.
The inner ring 4 is cavity cylindrical body, a venthole is equipped in the bottom of 4 cavity cylindrical body of inner ring, in 4 cavity of inner ring
The middle and upper part of cylinder interior wall is equipped with several small ventholes, is equipped with interior spiral shell on the top of 4 cavity cylinder interior wall of inner ring
Line.
When the utility model is used, inflation self-sealing switching device is fitted into the airtight hole of shell, the venthole of plug 3 connects
Tracheae is connected, gas after pressure reaches standard value in shell, is removed by the utility model automatically into enclosure interior when inflation
Fall snorkel, the utility model realizes the closed of shell gas automatically.
Claims (4)
1. a kind of inflation self-sealing switching device, by housing (1), gasket (2), plug (3), inner ring (4) and rubber pad (5) group
Be located at the bottom of inner ring (4) inner cavity at, it is characterised in that: the rubber pad (5), the lower part of plug (3) lateral surface with it is interior
The top of ring (4) inner surface is together by a threaded connection, and the plug (3) being connected and inner ring (4) pass through plug (3)
The external screw thread of the middle part setting of lateral surface is connect with the internal screw thread that housing (1) inner surface middle and upper part is arranged makes inner ring (4) positioned at outer
The middle and lower part of (1) inner cavity is covered, the gasket (2) is located on the circular table of housing (1) inner cavity top setting and is located at plug
(3) below annular convex platform.
2. a kind of inflation self-sealing switching device according to claim 1, it is characterised in that: the housing (1) is cylinder
Body is equipped with the inner cavity that can accommodate plug (3) and inner ring (4) at the middle part of housing (1) cylinder, in housing (1) inner cavity table
The middle and upper part in face is equipped with internal screw thread, is equipped with circular table on housing (1) inner cavity top and is located above internal screw thread, in housing (1)
Inner cavity lower end center is equipped with venthole, is equipped with external screw thread in the lower part of venthole outer surface.
3. a kind of inflation self-sealing switching device according to claim 1, it is characterised in that: the plug (3) is ladder
Shape cylindrical body is equipped with venthole at the center of plug (3) stepped cylinder, is equipped with internal screw thread in the inner surface of venthole,
The cylindrical outer surface of small ladder and middle ladder is equipped with external screw thread.
4. a kind of inflation self-sealing switching device according to claim 1, it is characterised in that: the inner ring (4) is cavity
Cylindrical body is equipped with venthole in the bottom of inner ring (4) cavity cylindrical body, in the middle and upper part of inner ring (4) cavity cylinder interior wall
Equipped with several small ventholes, internal screw thread is equipped on the top of inner ring (4) cavity cylinder interior wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820791857.3U CN208281591U (en) | 2018-05-25 | 2018-05-25 | A kind of inflation self-sealing switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820791857.3U CN208281591U (en) | 2018-05-25 | 2018-05-25 | A kind of inflation self-sealing switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208281591U true CN208281591U (en) | 2018-12-25 |
Family
ID=64704922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820791857.3U Active CN208281591U (en) | 2018-05-25 | 2018-05-25 | A kind of inflation self-sealing switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208281591U (en) |
-
2018
- 2018-05-25 CN CN201820791857.3U patent/CN208281591U/en active Active
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