CN210003806U

CN210003806U - Circular inflatable sealing ring

Info

Publication number: CN210003806U
Application number: CN201920807683.XU
Authority: CN
Inventors: 张红珍
Original assignee: Hebei Yicheng Rubber Plastic Technology Co Ltd
Current assignee: Hebei Yicheng Rubber Plastic 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 circular inflatable seal circle, including card portion and inflation portion, card portion with the inflation portion is connected, the inside inflation cavity that sets up of inflation portion, wherein, be rectangular shape structure before the cross section of inflation cavity is not aerifyd, be oval structure after aerifing, the height of the cavity of aerifing before aerifing is 0.2C pi-0.3C pi, the height of the cavity of aerifing after aerifing is 1.3C pi, wherein, C is the girth of inflation portion the utility model provides a circular inflatable seal circle, not only sealed respond well, can effectively reduce through setting up the leak protection subassembly at the charging connector moreover the utility model discloses an air leakage effect improves the rate of utilization.

Description

Circular inflatable sealing ring

Technical Field

The utility model belongs to the technical field of sealing device, concretely relates to circular inflatable seal circle.

Background

The inflatable sealing ring is ring bodies or linear bag bodies which have special-shaped hollow cavities and can be expanded and sealed after being inflated and restore to the original shape after being deflated, the inflatable sealing ring is mainly made of rubber with good elasticity and toughness, flexible seals are realized by the airtight sealing ring, such as and frames, and due to processing precision, after long-term use, gaps between the inflatable sealing ring and the airtight sealing ring are formed, so that the gaps can be sealed by restarting a graded air ring.

At present, circular sealing rings are often used in precision instruments, but the inflatable sealing rings used in the market at present are not easy to fix, have poor sealing effect and are easy to leak gas.

Disclosure of Invention

For solving the problem that exists among the prior art, the utility model provides an kind of circular inflatable seal circle, including card portion and inflation portion, card portion with inflation portion connects, the inside inflation cavity that sets up of inflation portion, the cross section of inflation cavity is long bar-type texture before not aerifing, is oval structure after aerifing, the height of inflating the cavity before aerifing is 0.2C pi-0.3C pi, the height of inflating the cavity after aerifing is 1.3C pi, wherein, C is the girth of inflation portion.

Preferably, circular inflatable seal still includes the charging connector, the charging connector includes gas pipeline and fixed bolster, gas pipeline's cross-section is circular structure, the fixed bolster is overlapped and is established gas pipeline's periphery, set up the leak protection subassembly in the gas pipeline, the leak protection subassembly includes telescopic link, baffle, spring and bracing piece, the periphery of telescopic link sets up circular shape seal ring, the telescopic link sets up in the spring, the both ends of spring are connected with seal ring and bracing piece respectively.

Preferably, the ends of the support rods are connected with the inner wall of the inflation pipeline, the ends of the support rods are arranged towards the center of the cross section of the inflation pipeline, the number of the support rods is four, and the distances between every two support rods are equal.

In any above, it is preferable that a silicone pad is disposed at an end of the inflation tube.

In any above, it is preferable that the outer periphery of the inflation tube is provided with a thread structure.

In any of the aspects above, preferably, the baffle is a stainless steel plate.

In any of the aspects above, it is preferred that a small piece of magnet be provided within the sealing gasket.

The utility model has the advantages that: the utility model provides a circular inflatable seal circle is used for in the precision instruments, not only seals effectually, can effectively reduce through setting up the leak protection subassembly at the charging connector moreover the utility model discloses a gas leakage effect improves the rate of utilization.

Drawings

FIG. 1 is a schematic view of a preferred embodiment of a circular inflatable sealing ring according to the present invention;

fig. 2 is a schematic cross-sectional view taken along line a-a of fig. 1 prior to non-inflation of the circular inflatable seal ring in accordance with the present invention;

fig. 3 is a schematic view of the connection portion of the circular inflatable sealing ring with the inflating nozzle according to the present invention;

fig. 4 is a schematic cross-sectional view of the plane a-a of fig. 1 after inflation of the circular inflatable sealing ring according to the present invention.

The figures are labeled as follows: 1-a clamping part; 2-an expansion part; 3-inflating the cavity; 4-an inflating valve; 5-an inflation pipeline; 6-a baffle plate; 7-a sealing gasket; 8, a telescopic rod; 9-a spring; 10-a support bar; 11-silica gel pad; 12-fixed mat.

Detailed Description

In order to further understand the inventive concept of the present invention, the following detailed description is given with reference to specific embodiments.

The sealing ring comprises a clamping part 1, an inflating nozzle 4 and an expansion part 2, the clamping part 1 is connected with the expansion part 2, an inflating cavity 3 is arranged inside the expansion part 2, the cross section of the inflating cavity 3 is a long-strip-shaped structure before being inflated, the cross section of the inflating cavity 3 is an oval-shaped structure after being inflated, the height of the inflating cavity 3 before being inflated is 0.2C/pi-0.3C/pi, the height of the inflating cavity 3 after being inflated is about 1.3C/pi, wherein C is the perimeter of the expansion part, the expanding height not only can achieve good inflation height, but also can improve the service life of the inflating sealing ring, the inflating nozzle 8 comprises an inflating pipeline 5 and a fixing cushion 12, the cross section of the inflating pipeline 5 is a circular structure and is connected with the inflating part in the inflating sealing gasket 9, the fixing cushion 12 is sleeved on the periphery of the inflating pipeline 5, the fixing cushion 12 is connected with the sealing ring 5, the sealing ring 5 is arranged in the sealing ring 9, the sealing ring 7 is arranged in a sealing ring 7, a sealing ring is arranged in a sealing ring 7, a sealing ring assembly is arranged in a sealing ring 7, a sealing ring assembly is arranged in a sealing ring assembly, a.

When the air inflation sealing device is used, the air inlet pipe with the ejector pins is connected with the air inflation pipeline 5, so that the ejector pins are right, the telescopic rod 8 is extruded, the baffle 6 is separated from the sealing washer 7, the air inflation pipeline 5 becomes a passage, the air inflation sealing washer 9 is inflated through the air inflation pump, after the air inflation is finished, the air inlet pipe with the ejector pins is pulled out, the sealing washer 7 is attached to the baffle 6 again under the combined action of the pressure in the air inflation sealing washer 9 and the spring 9, the air inflation pipeline 5 is blocked, and the purpose of preventing air leakage is achieved.

It will be understood by those skilled in the art that any combination of the above-described summary of the invention, detailed description of the invention, and portions of the accompanying drawings, including any combination of the above-described embodiments and portions of the present invention, which is not intended to limit the invention to the particular embodiments and portions of the invention, but rather, to simplify the description, the various embodiments may be omitted from this combination.

Claims

The utility model provides an kind of circular inflatable seal ring, including card portion and inflation portion, card portion with the inflation portion is connected, the inside inflation cavity that sets up of inflation portion, its characterized in that, the cross section of inflation cavity is rectangular shape structure before not aerifing, is oval structure after aerifing, the height of inflation cavity before aerifing is 0.2C/pi-0.3C/pi, the height of inflation cavity after aerifing is 1.3C/pi, wherein, C is the girth of inflation portion.
2. The circular inflatable sealing ring according to claim 1, further comprising an inflating nozzle, wherein the inflating nozzle comprises an inflatable pipeline and a fixing pad, the cross section of the inflatable pipeline is of a circular structure, the fixing pad is sleeved on the periphery of the inflatable pipeline, and the fixing pad is connected with the clamping portion.
3. The inflatable circular gasket of claim 2, wherein a leak-proof assembly is disposed within said inflation conduit.
4. The circular inflatable sealing ring according to claim 3, wherein the leakage-proof assembly comprises a telescopic rod, a baffle, a spring and a support rod, the circular sealing washer is arranged on the periphery of the telescopic rod, the telescopic rod is arranged in the spring, and two ends of the spring are respectively connected with the sealing washer and the support rod.
5. The inflatable circular gasket of claim 4, wherein said baffle is a stainless steel plate.
6. The circular inflatable gasket of claim 5, wherein a small piece of magnet is disposed within the gasket.