CN203285996U - Negative R-value high-pressure oil seal for hydraulic pump - Google Patents
Negative R-value high-pressure oil seal for hydraulic pump Download PDFInfo
- Publication number
- CN203285996U CN203285996U CN2013202963090U CN201320296309U CN203285996U CN 203285996 U CN203285996 U CN 203285996U CN 2013202963090 U CN2013202963090 U CN 2013202963090U CN 201320296309 U CN201320296309 U CN 201320296309U CN 203285996 U CN203285996 U CN 203285996U
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- Prior art keywords
- spring
- seal lip
- pressure oil
- hydraulic pump
- negative
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- 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 - Lifetime
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- 238000007789 sealing Methods 0.000 claims description 20
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model discloses a negative R-value high-pressure oil seal for a hydraulic pump. The negative R-value high-pressure oil seal for the hydraulic pump comprises a framework, a rubber body and a spring, wherein the rubber body is coated outside the framework; a seal lip forms at the inner circumference of the rubber body; the spring is arranged at the outer circumference of the seal lip; the seal lip is surrounded by a first circumference surface and a second circumference surface; the axial distance from the connecting crossed line of the first circumference surface and the second circumference surface to the central axis of the spring is R, and the connecting crossed line is positioned in the inner side of the central axis of the spring. According to the utility model, the axial distance from the connecting crossed line of the first circumference surface and the second circumference surface to the central axis of the spring is R, and the connecting crossed line is positioned in the inner side of the central axis of the spring, namely, the seal lip is designed by adopting a negative R-value structure; under the working condition of high pressure and high rotation speed, the abrasion of the seal lip is much tiny, and the high-pressure oil seal has a favorable seal performance.
Description
Technical field
The utility model relates to the High-pressure oil sealing technical field, relates in particular to a kind of high pressure resistant high-revolving oil hydraulic pump with bearing R value High-pressure oil sealing.
Background technique
In recent years, along with the fast development of Hydraulic Industry, for the performance requirement of its supporting component also more and more higher.It is the supporting High-pressure oil sealing of oil hydraulic pump in prior art, its working condition requirement is very strict, in normal working conditions, this oil sealing requires under the operating mode of 0.5MPa, 2500rpm 500h without leakage, under limiting operationg condition, even need to turn round 200h without leakage under the harsh operating mode of 0.5MPa, 3700rpm.
Current, domestic most producer can't meet the working condition requirement of above-mentioned oil hydraulic pump with High-pressure oil sealing, and under the high-revolving harsh operating mode of high pressure, the wearing and tearing of High-pressure oil sealing are very serious, and sealability is very poor.
The model utility content
For the problem that prior art exists, the purpose of this utility model is to have proposed a kind of high pressure resistant high-revolving oil hydraulic pump with bearing R value High-pressure oil sealing, and seal lip adopts negative R value structural design, has good sealability under the high-revolving operating mode of high pressure.
For reaching this purpose, the utility model by the following technical solutions:
A kind of oil hydraulic pump is with bearing R value High-pressure oil sealing, comprise: skeleton, rubber body and spring, rubber body is coated on outside skeleton, interior week formation seal lip in rubber body, spring is located at the periphery of seal lip, and seal lip is surrounded by the first side face and the second side face, and the axial distance between the connection intersection of the first side face and the second side face and the central axis of spring is R, and, connect intersection and be positioned at the inboard of the central axis of spring.
Preferably, in the periphery of seal lip, be provided with semicircular circular groove, spring clip is in described circular groove.
Based on disclosing of above technological scheme, the utility model possesses following beneficial effect:
In the utility model, axial distance between the connection intersection of the first side face and the second side face and the central axis of spring is R, and, connect the inboard that intersection is positioned at the central axis of spring, be that seal lip adopts negative R value structural design, under the high-revolving operating mode of high pressure, the wearing and tearing of seal lip are very little, and High-pressure oil sealing has good sealability.
In actual application, negative R value High-pressure oil sealing moves 500 hours without leaking under the operating mode of 0.5Mpa, 2500rpm, still can keep good sealability under the harsh operating mode of the limit of 0.5Mpa, 3700rpm, and 200h does not leak.
Description of drawings
Fig. 1 is a kind of oil hydraulic pump structural representation of bearing R value High-pressure oil sealing that the utility model proposes.
Embodiment
As shown in Figure 1, use the structural representation of negative R value High-pressure oil sealing for a kind of oil hydraulic pump that the utility model proposes.
With reference to Fig. 1, a kind of oil hydraulic pump that the utility model proposes is with bearing R value High-pressure oil sealing, comprise: skeleton 1, rubber body 2 and spring 3, wherein, rubber body 2 is coated on outside skeleton 1, interior week formation seal lip 20 in rubber body 2, spring 3 is located at the periphery of seal lip 20, particularly, in the periphery of seal lip 20, is provided with semicircular circular groove, spring 3 is stuck in described circular groove, and spring 3 can support seal lip 20;
In Fig. 1, the first side face 21 be connected the connection intersection L1 of side face 22 more near the middle part of High-pressure oil sealing, the axis L 2 of spring 3, more near the end of High-pressure oil sealing, forms negative R value structure.
In the utility model, axial distance between the connection intersection of the first side face and the second side face and the central axis of spring is R, and, connect the inboard that intersection is positioned at the central axis of spring, seal lip adopts negative R value structural design, under the high-revolving operating mode of high pressure, the wearing and tearing of seal lip are very little, and High-pressure oil sealing has good sealability.
In actual application, negative R value High-pressure oil sealing moves 500 hours without leaking under the operating mode of 0.5Mpa, 2500rpm, still can keep good sealability under the harsh operating mode of the limit of 0.5Mpa, 3700rpm, and 200h does not leak.
The above; it is only the better embodiment of the utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to replacement or changed according to the technical solution of the utility model and model utility design thereof, within all should being encompassed in protection domain of the present utility model.
Claims (2)
1. an oil hydraulic pump is with bearing R value High-pressure oil sealing, comprise: skeleton (1), rubber body (2) and spring (3), rubber body (2) is coated on outside skeleton (1), interior week formation seal lip (20) in rubber body (2), spring (3) is located at the periphery of seal lip (20), it is characterized in that, seal lip (20) is surrounded by the first side face (21) and the second side face (22), axial distance between the connection intersection (L1) of the first side face (21) and the second side face (22) and the central axis (L2) of spring (3) is R, and, connect the inboard that intersection (L1) is positioned at the central axis (L2) of spring (3).
2. oil hydraulic pump according to claim 1, with negative R value High-pressure oil sealing, is characterized in that, in the periphery of seal lip (20), is provided with semicircular circular groove, and spring (3) is stuck in described circular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202963090U CN203285996U (en) | 2013-05-27 | 2013-05-27 | Negative R-value high-pressure oil seal for hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202963090U CN203285996U (en) | 2013-05-27 | 2013-05-27 | Negative R-value high-pressure oil seal for hydraulic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203285996U true CN203285996U (en) | 2013-11-13 |
Family
ID=49542358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202963090U Expired - Lifetime CN203285996U (en) | 2013-05-27 | 2013-05-27 | Negative R-value high-pressure oil seal for hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203285996U (en) |
-
2013
- 2013-05-27 CN CN2013202963090U patent/CN203285996U/en not_active Expired - Lifetime
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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: ANHUI KUBO SEALING TECHNOLOGY CO., LTD. Free format text: FORMER NAME: ANHUI KUBO OIL SEAL CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 242300, Anhui, Ningguo, Ningguo Xuancheng economic and Technological Development Zone, Nanshan West Road, Ding Ding Industrial Park North Anhui Kolb Sealing Technology Co., Ltd. Patentee after: ANHUI COOPER SEALING TECHNOLOGY CO.,LTD. Address before: 242300, Anhui, Xuancheng, Ningguo Ningguo economic and Technological Development Zone, Nanshan West Road, Ding Ding Industrial Park North Anhui Kolb oil seal Co., Ltd. Patentee before: ANHUI KUBO OIL SEAL Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20131113 |
|
| CX01 | Expiry of patent term |