CN206708363U - Piston sealing device - Google Patents
Piston sealing device Download PDFInfo
- Publication number
- CN206708363U CN206708363U CN201720368075.4U CN201720368075U CN206708363U CN 206708363 U CN206708363 U CN 206708363U CN 201720368075 U CN201720368075 U CN 201720368075U CN 206708363 U CN206708363 U CN 206708363U
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- CN
- China
- Prior art keywords
- piston
- ring
- sealing ring
- sealing
- cylinder body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Pistons, Piston Rings, And Cylinders (AREA)
- Sealing Devices (AREA)
Abstract
The utility model provides a kind of piston sealing device, it includes cylinder body and piston, the piston is provided with the groove of ring-type, the seal member for sealing the cylinder body and piston is provided with the groove, wherein, the seal member includes a sealing ring and is arranged on the bracing ring of the sealing ring both sides, the sealing ring includes narrow portion and wide portion, the wide portion is close to the piston, the narrow portion is close to the cylinder body, and the bracing ring is housed inside in the space formed by the sealing ring, the cylinder body and the piston.By utilization of the present utility model, sealing ring is prevented to squeeze into the fit clearance of piston and cylinder body to the extruding upset of non-pressure side and sealing ring in pressure effect in the case of high pressure, and realize two way seal simultaneously.
Description
Technical field
It the utility model is related to a kind of piston sealing device.
Background technology
In the prior art, the seal member of piston is poorly suitable for the medium of high pressure, once the high sealing ring of pressure
It can be quickly invalidated because extruding and overturning friction.Specifically, sealing ring existing certain decrement in assembling, when cylinder body either side
When having pressure, there is elastomeric sealing ring can be extruded in pressure effect to non-pressure side and overturn.Some are exclusively used in high-pressure medium
Sealing ring be also only used for because its structure limits one direction sealing, it is impossible to be used in two way seal.The sealing means of such a piston
Solves the problems, such as high-voltage bidirectional sealing.
Utility model content
The technical problems to be solved in the utility model is to overcome prior art high pressure lower seal because extruding and turning over
Turn the defects of friction can be quickly invalidated, there is provided a kind of piston sealing device.
The utility model is that solve above-mentioned technical problem by following technical proposals：
A kind of piston sealing device, its feature are that it includes cylinder body and piston, and the piston is provided with the ditch of ring-type
Groove, the seal member for sealing the cylinder body and piston is provided with the groove, wherein,
The seal member includes a sealing ring and is arranged on the bracing ring of the sealing ring both sides,
The sealing ring includes narrow portion and wide portion, and the wide portion is close to the piston, and the narrow portion is close to described
Cylinder body,
The bracing ring is housed inside in the space formed by the sealing ring, the cylinder body and the piston.
It is preferred that the piston includes two grooves.
It is preferred that the piston sealing device includes two seal members.
It is preferred that the material of the sealing ring is elastomeric material.
It is preferred that the shape of cross section of the sealing ring is T-shaped.
It is preferred that the shape of cross section of the bracing ring is rectangle.
It is preferred that the material of the bracing ring is polytetrafluoroethylene (PTFE), polyether-ether-ketone or nylon.
Positive effect of the present utility model is：By utilization of the present utility model, prevent in the case of high pressure
The fit clearance of piston and cylinder body can be squeezed into pressure effect to the extruding upset of non-pressure side and sealing ring by having stopped sealing ring, and together
Shi Shixian two way seals.
Brief description of the drawings
Fig. 1 is the piston sealing device structural representation of the utility model preferred embodiment.
Fig. 2 is Fig. 1 A portions enlarged diagram.
Description of reference numerals：
Cylinder body 1
Cylinder portion 11
Seal member 2
Sealing ring 21
Bracing ring 22
Piston 3
Groove 31
The chamber 41 of medium one
The chamber 42 of medium two
Embodiment
Name preferred embodiment, and become apparent from intactly illustrating the utility model with reference to accompanying drawing.
As depicted in figs. 1 and 2, the utility model discloses a kind of piston sealing device, it includes cylinder body 1 and piston 3.
Cylinder body 1 includes cylinder portion 11.Pressure medium is provided with the chamber 41 of medium one and the chamber 42 of medium two, under the effect of the pressure, piston 3
Slided in cylinder portion 11.
Piston 3 is provided with the groove 31 of ring-type, and the seal member for sealed cylinder block 1 and piston 3 is provided with groove 31
2。
As shown in Fig. 2 seal member 2 includes a sealing ring 21 and is arranged on the bracing ring 22 of the both sides of sealing ring 21.It is close
Seal 21 includes narrow portion and wide portion, and the wide portion is close to piston 3, and the narrow portion is close to cylinder body 1, and bracing ring 22 is received
In in the space formed by sealing ring 21, cylinder body 1 and piston 3.
In the present embodiment, piston 3 includes two grooves 31, and piston sealing device includes two seal members 2, so as to increase
Sealing property.
As shown in Fig. 2 in the present embodiment, the shape of cross section of sealing ring 21 is T-shaped, and the shape of cross section of bracing ring 22 is
Rectangle.
It is preferred that the material of sealing ring 21 is elastomeric material.It is preferred that the material of the bracing ring is polytetrafluoroethylene (PTFE)
(PTFE), polyether-ether-ketone (PEEK) or nylon etc. are nonmetallic.
The existing certain decrement in assembling of sealing ring 21, when the chamber 41 of medium one or the either side of two chamber of medium 42 have pressure
When, there is elastomeric sealing ring 21 can be extruded in pressure effect to non-pressure side and overturn, the design of bracing ring 22 prevents this
The generation of a little failure modes.This sealing means are suitable for the device of a variety of media such as hydraulic cylinder, cylinder, water vat, the pressure of application
Power scope is wide, and can realize two way seal under high pressure.
Although the foregoing describing specific embodiment of the present utility model, it will be appreciated by those of skill in the art that
This is merely illustrative of, and the scope of protection of the utility model is defined by the appended claims.Those skilled in the art
On the premise of without departing substantially from principle of the present utility model and essence, various changes or modifications can be made to these embodiments,
But these changes and modification each fall within the scope of protection of the utility model.
Claims (7)
1. a kind of piston sealing device, it is characterised in that it includes cylinder body and piston, and the piston is provided with the ditch of ring-type
Groove, the seal member for sealing the cylinder body and piston is provided with the groove, wherein,
The seal member includes a sealing ring and is arranged on the bracing ring of the sealing ring both sides,
The sealing ring includes narrow portion and wide portion, and the wide portion is close to the piston, and the narrow portion is close to the cylinder body,
The bracing ring is housed inside in the space formed by the sealing ring, the cylinder body and the piston.
2. piston sealing device as claimed in claim 1, it is characterised in that the piston includes two grooves.
3. piston sealing device as claimed in claim 2, it is characterised in that the piston sealing device is described close including two
Seal part.
4. piston sealing device as claimed in claim 1, it is characterised in that the material of the sealing ring is elastomeric material.
5. piston sealing device as claimed in claim 1, it is characterised in that the shape of cross section of the sealing ring is T-shaped.
6. piston sealing device as claimed in claim 1, it is characterised in that the shape of cross section of the bracing ring is rectangle.
7. piston sealing device as claimed in claim 1, it is characterised in that the material of the bracing ring be polytetrafluoroethylene (PTFE),
Polyether-ether-ketone or nylon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720368075.4U CN206708363U (en) | 2017-04-10 | 2017-04-10 | Piston sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720368075.4U CN206708363U (en) | 2017-04-10 | 2017-04-10 | Piston sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206708363U true CN206708363U (en) | 2017-12-05 |
Family
ID=60468953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720368075.4U Active CN206708363U (en) | 2017-04-10 | 2017-04-10 | Piston sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206708363U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114453286A (en) * | 2022-01-04 | 2022-05-10 | 吉林大学重庆研究院 | Automatic production line and production process of hydraulic cylinder |
-
2017
- 2017-04-10 CN CN201720368075.4U patent/CN206708363U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114453286A (en) * | 2022-01-04 | 2022-05-10 | 吉林大学重庆研究院 | Automatic production line and production process of hydraulic cylinder |
| CN114453286B (en) * | 2022-01-04 | 2023-01-17 | 吉林大学重庆研究院 | Automatic production line and production process for hydraulic cylinder |
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Legal Events
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| GR01 | Patent grant | ||
| GR01 | Patent grant |