CN203413122U - Hydraulic sealing structure - Google Patents
Hydraulic sealing structure Download PDFInfo
- Publication number
- CN203413122U CN203413122U CN201320297390.4U CN201320297390U CN203413122U CN 203413122 U CN203413122 U CN 203413122U CN 201320297390 U CN201320297390 U CN 201320297390U CN 203413122 U CN203413122 U CN 203413122U
- Authority
- CN
- China
- Prior art keywords
- gland
- cavity
- sealing structure
- runddichtringo
- piston rod
- 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.)
- Expired - Fee Related
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model relates to a hydraulic sealing structure which comprises a gland and a piston rod reciprocating in the gland. A cavity is formed inside the gland; an O-shaped sealing ring mounted on the piston rod is arranged in the cavity; and polyester ethylene check rings are arranged in the cavity at both sides of the O-shaped sealing ring. The hydraulic sealing structure has the beneficial effects of fundamentally eliminating the squeezed damaged phenomenon of the O-shaped sealing ring, prolonging service life of the O-shaped sealing ring and greatly reducing maintenance frequency of a hydraulic shear.
Description
Technical field
The utility model relates to a kind of hydraulic sealing structure.
Background technique
The sealing principle of O RunddichtringO is the precompression that relies on O RunddichtringO, eliminates gap and realizes sealing.But when O RunddichtringO is when the reciprocating movement sealing, will be squeezed is pressed into gap and impaired.Will to-and-fro motion in gland due to hydraulic shear piston rod, cause the impaired inefficacy of O RunddichtringO, caused rod chamber liquid oil to blend intrusion the ground and polished piston bar of extraneous dust and hammer scale outward.
Model utility content
The technical problems to be solved in the utility model is: based on the problems referred to above, provide a kind of hydraulic sealing structure.
The utility model solves the technological scheme that its technical problem adopts: a kind of hydraulic sealing structure, comprise gland and reciprocating piston rod in gland, gland inner side is provided with cavity, in cavity, be provided with the O RunddichtringO being arranged on piston rod, in the cavity of O RunddichtringO both sides, be equipped with polyester ethene back-up ring.
Further, combine closely in the inner side of the outside of O RunddichtringO and polyester ethene back-up ring.
The beneficial effects of the utility model are: fundamentally eliminated the extruding damaged phenomenon of O RunddichtringO, improved the working life of O RunddichtringO, greatly reduced the frequency of maintenance of hydraulic shear.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further illustrated.
Fig. 1 is structural representation of the present utility model.
Wherein: 1. gland, 2. piston rod, 3.O RunddichtringO, 4. polyester ethene back-up ring.
Embodiment
By reference to the accompanying drawings the utility model is further described now.The schematic diagram that these accompanying drawings are simplification only illustrates basic structure of the present utility model in a schematic way, so it only shows the formation relevant with the utility model.
A kind of hydraulic sealing structure as shown in Figure 1, comprise gland 1 and reciprocating piston rod 2 in gland 1, gland 1 inner side is provided with cavity, is provided with the O RunddichtringO 3 being arranged on piston rod 2 in cavity, is equipped with polyester ethene back-up ring 4 in the cavity of O RunddichtringO 3 both sides.Combine closely in the inner side of the outside of O RunddichtringO 3 and polyester ethene back-up ring 4.
The above-mentioned foundation desirable embodiment of the present utility model of take is enlightenment, and by above-mentioned description, relevant staff can, within not departing from the scope of this model utility technological thought, carry out various change and modification completely.The technical scope of this model utility is not limited to the content on specification, must determine its technical scope according to claim scope.
Claims (2)
1. a hydraulic sealing structure, comprise gland (1) and reciprocating piston rod (2) in gland (1), it is characterized in that: described gland (1) inner side is provided with cavity, in cavity, be provided with the O RunddichtringO (3) being arranged on piston rod (2), in the cavity of O RunddichtringO (3) both sides, be equipped with polyester ethene back-up ring (4).
2. a kind of hydraulic sealing structure according to claim 1, is characterized in that: combine closely in the outside of described O RunddichtringO (3) and the inner side of polyester ethene back-up ring (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320297390.4U CN203413122U (en) | 2013-05-27 | 2013-05-27 | Hydraulic sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320297390.4U CN203413122U (en) | 2013-05-27 | 2013-05-27 | Hydraulic sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203413122U true CN203413122U (en) | 2014-01-29 |
Family
ID=49976011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320297390.4U Expired - Fee Related CN203413122U (en) | 2013-05-27 | 2013-05-27 | Hydraulic sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203413122U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013529A (en) * | 2017-05-09 | 2017-08-04 | 柯利佳 | A kind of hydraulic sealing structure |
-
2013
- 2013-05-27 CN CN201320297390.4U patent/CN203413122U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013529A (en) * | 2017-05-09 | 2017-08-04 | 柯利佳 | A kind of hydraulic sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 Termination date: 20140527 |