CN201875136U - Hydraulic sealing device - Google Patents
Hydraulic sealing device Download PDFInfo
- Publication number
- CN201875136U CN201875136U CN2010206278376U CN201020627837U CN201875136U CN 201875136 U CN201875136 U CN 201875136U CN 2010206278376 U CN2010206278376 U CN 2010206278376U CN 201020627837 U CN201020627837 U CN 201020627837U CN 201875136 U CN201875136 U CN 201875136U
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- CN
- China
- Prior art keywords
- seal
- face
- type groove
- hydraulic
- arrangement
- 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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Abstract
The utility model discloses a hydraulic sealing device, which is simple in structure, fine in sealing performance and long in service life. The hydraulic sealing device comprises an annular rubber sealing ring, a working end face of the annular rubber sealing ring is composed of V-shaped surfaces and planes which are respectively disposed on the inner side and the outer side, and the radial width of the plane is smaller than the radial width of a corresponding axial step surface of a mounting groove of a piston.
Description
Technical field
The utility model relates to a kind of hydraulic seal device that is used for engineering machinery etc.
Background technique
Existing hydraulic seal device, especially for the annular hydraulic seal device of piston type device such as seal ring etc., meeting to the operative end surface of pressure transmitting medium of the pressure transmission medium of its seal nothing more than being plane type or plane of inclination formula, the seal arrangement of this class formation all exists sealability not good, rate of fault is than higher defective, adopt the seal arrangement of plane of inclination structural type to be generally to lopsidedness owing to its operative end surface, this operative end surface that may cause a seal arrangement wherein side pressure causes the overall sealing performance of seal arrangement to reduce greater than relative opposite side; That uses the plane type structure then influences sealing effect because of the sealing surface of seal arrangement with the deficiency of the contact pressure between the corresponding piston cylinder wall surface.Particularly a common outstanding problem existing of these two kinds of mode of structure is exactly seal arrangement the operative end surface area is all bigger, is easy to generate the seepage phenomenon, has both influenced sealing effect, influences working life again.
Summary of the invention
The purpose of this utility model is the problem that exists at prior art, and a kind of hydraulic seal device is provided, and this hydraulic seal device is simple in structure, good seal performance, long service life.
The technical solution of the utility model comprises seal, is provided with a V-type groove around described seal axis on the end end face of described seal.
The end face of V-type groove notch one end of described seal is made of one or several V-arrangement faces and one or several planes.
The end face of V-type groove notch one end of described seal is made of with the plane that is positioned at relative inner a V-arrangement face that is positioned at the relative outside.
Described seal is an O-ring seal, and the end face of V-type groove notch one end of described O-ring seal is made of the V-arrangement face portion and the planar section that are positioned at the relative outside and inboard.
The radial width of its planar section of end face that leans on V-type groove notch one end of described O-ring seal is less than or equal to the corresponding axially width of table top of the installation groove of piston body.
Hydraulic seal device of the present utility model is simple in structure, when pressure is passed to the operative end surface of annular sealing member by the liquid conductive medium, the pressure that produces a radial direction is decomposed in two plane of inclination, medial and lateral by the V-type groove, make the sealing surface of annular sealing member form reliable the contact with the hydraulic cylinder madial wall, to obtain good sealing effect, and leakage can effectively be avoided, environmental protection and energy saving, long service life.
Description of drawings
Fig. 1 is the structural representation of the utility model hydraulic seal device.The structural representation that Fig. 2 is connected with piston apparatus for the utility model hydraulic seal device.
Embodiment
Now also the utility model is described in further detail in conjunction with the accompanying drawings by embodiment.As illustrated in fig. 1 and 2, the hydraulic pressure closely packed is put and is comprised that rubber O-ring seal 1 constitutes, the axis that the end face of rubber O-ring seal 1 working end (meeting the end face to pressure transmission medium) is gone up around rubber O-ring seal 1 is provided with a V-type groove 2, and the end face of working end of rubber O-ring seal 1 that is provided with V-type groove 2 is by connecting and composing by the V-arrangement face portion 4 of the V-type groove in the outside of rubber O-ring seal 1 and the planar annular part 3 that is positioned at the inboard of V-type groove 2.
The annular that the planar annular part 3 of the operative end surface of rubber O-ring seal 1, the width of its radial direction are less than or equal to the piston body 5 of piston apparatus is installed the corresponding axially radial width of circular table 7 in the groove 6.
Claims (5)
1. a hydraulic seal device comprises seal, it is characterized in that being provided with a V-type groove around described seal axis on the end end face of described seal.
2. according to the described hydraulic seal device of claim 1, it is characterized in that the end face of V-type groove notch one end of described seal is made of one or several V-arrangement faces and one or several planes.
3. according to the described hydraulic seal device of claim 1, it is characterized in that the end face of V-type groove notch one end of described seal is made of with the plane that is positioned at relative inner a V-arrangement face that is positioned at the relative outside.
4. according to claim 1,2 or 3 described hydraulic seal devices, it is characterized in that described seal is an O-ring seal, the end face of V-type groove notch one end of described O-ring seal is made of the V-arrangement face portion and the planar section that are positioned at the relative outside and inboard.
5. according to the described hydraulic seal device of claim 4, it is characterized in that the radial width of its planar section of end face that leans on V-type groove notch one end of described O-ring seal is less than or equal to the corresponding axially width of table top of the installation groove of piston body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206278376U CN201875136U (en) | 2010-11-26 | 2010-11-26 | Hydraulic sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206278376U CN201875136U (en) | 2010-11-26 | 2010-11-26 | Hydraulic sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201875136U true CN201875136U (en) | 2011-06-22 |
Family
ID=44163053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206278376U Expired - Fee Related CN201875136U (en) | 2010-11-26 | 2010-11-26 | Hydraulic sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201875136U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306969A (en) * | 2013-06-20 | 2013-09-18 | 合肥华升泵阀有限责任公司 | Combined sealing device for plunger pump |
-
2010
- 2010-11-26 CN CN2010206278376U patent/CN201875136U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306969A (en) * | 2013-06-20 | 2013-09-18 | 合肥华升泵阀有限责任公司 | Combined sealing device for plunger pump |
| CN103306969B (en) * | 2013-06-20 | 2015-06-24 | 合肥华升泵阀股份有限公司 | Combined sealing device for plunger pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: LONKING (JIANGXI) MACHINERY CO., LTD. Free format text: FORMER NAME: LONGGONG (JIANGXI) GEAR CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 330800, No. 1, Liuzhou Road, Yichun, Jiangxi Patentee after: Dragon Engineering (Jiangxi) Machinery Co., Ltd. Address before: 336000, No. 1, Liuzhou Road, Yichun, Jiangxi Patentee before: Lonking (Jiangxi) Gear Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20141126 |
|
| EXPY | Termination of patent right or utility model |