CN203098277U - Oil outlet cavity sealing ring of lower cover body of gear hydraulic pump - Google Patents
Oil outlet cavity sealing ring of lower cover body of gear hydraulic pump Download PDFInfo
- Publication number
- CN203098277U CN203098277U CN 201320085498 CN201320085498U CN203098277U CN 203098277 U CN203098277 U CN 203098277U CN 201320085498 CN201320085498 CN 201320085498 CN 201320085498 U CN201320085498 U CN 201320085498U CN 203098277 U CN203098277 U CN 203098277U
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- sealing
- hydraulic pump
- lower cover
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- sealing ring
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Abstract
The utility model discloses an oil outlet cavity sealing ring of a lower cover body of a gear hydraulic pump. The oil outlet cavity sealing ring comprises a sealing ring body, wherein the sealing ring body consists of an arc-shaped clamping section at the bottom, a connection section in the middle and a sealing section at the top of the connection section, the sealing section consist of a sealing lip on the outer side and a sealing bulge on the inner side, the top surface of the sealing lip has the structure that one end is high, the other end is low, and the high end is higher that the sealing bulge, the low end is lower than the sealing bulge. According to the oil outlet cavity sealing ring, the arc-shaped clamping section can be clamped in a sealing ring clamping groove, and the sealing lip and the sealing bulge at the top can respectively play a role in one-time sealing in the use process, so that the sealing effect is good, the oil leakage of an oil outlet cavity can be prevented, and the stable output pressure of the gear hydraulic pump is ensured.
Description
Technical field
The utility model relates to a kind of oil hydraulic pump, especially a kind of gear hydraulic pump lower cover go out the oil pocket seal ring.
Background technique
Oil hydraulic pump is the dynamical element of hydraulic system, and its effect is the pressure energy that the mechanical energy of prime mover is converted to liquid, refers to the oil pump in the hydraulic system, and it provides power to whole hydraulic system.The structural type of oil hydraulic pump generally has gear hydraulic pump, vane pump and plunger pump.
The gear hydraulic pump comprises a upper cover body, middle case and lower cover, in middle case, be provided with intermeshing driving gear and driven gear, be respectively oil suction chamber in the both sides of two gears and go out oil pocket, gear can be transported to out oil pocket from oil suction chamber with oil when rotating, and then extrude from the oil outlet of lower cover, wherein, lower cover is provided with oil outlet and goes out oil pocket and communicate with described, in order to prevent the loss of oil leakage build-up of pressure, be provided with going out the seal ring that oil pocket seals at the lower cover upper bottom surface, this seal ring adopts O shape circle in the prior art, and O shape circle can only form the single track sealing, and sealing effect is relatively poor, cause oil leakage easily, make gear hydraulic pumping pressure shakiness to be difficult to satisfy the user demand of hydraulic system, therefore be necessary the oil pocket seal ring that of existing gear hydraulic pump lower cover is improved.
Summary of the invention
The purpose of this utility model be a kind of good sealing effect of designing for the deficiency that solves above-mentioned technology gear hydraulic pump lower cover go out the oil pocket seal ring.
The gear hydraulic pump lower cover that the utility model is designed go out the oil pocket seal ring, comprise the seal ring body, described seal ring body is made of the arc snap section that is positioned at the bottom, the linkage section in the middle of being positioned at and the seal section that is positioned at the linkage section top, described seal section is made of sealing lip that is positioned at the outside and the seal convexity that is positioned at the inboard, and described sealing lip end face is the low structure of the high end of an end and that high end is higher than described seal convexity, that low end is lower than described seal convexity.
As preferably:
The top of described seal convexity is an arc surface;
The end face of described sealing lip and the top of seal convexity all are provided with chase;
The gear hydraulic pump lower cover that the utility model is designed go out the oil pocket seal ring, its arc snap section can snap in the seal ring draw-in groove of lower cover, and the sealing lip at its top and seal convexity in use can form double sealing, therefore sealing effect is better, the situation that can prevent out the oil pocket leakage of oil takes place, and guarantees that the gear hydraulic pump can have stable delivery pressure.
Description of drawings
Fig. 1 is the vertical profile schematic representation of embodiment's 1 seal ring;
Fig. 2 is the enlarged view in embodiment 1 seal ring longitudinal section;
Fig. 3 is the longitudinal section enlarged view of embodiment's 2 seal ring seal convexities and sealing lip;
Among the figure: seal ring body 1, arc snap section 2, linkage section 3, seal section 4, sealing lip 41, seal convexity 42, chase 5.
Embodiment
The utility model will be further described in conjunction with the accompanying drawings below by embodiment.
Embodiment 1:
As Fig. 1, shown in 2, the described gear hydraulic pump of present embodiment lower cover go out the oil pocket seal ring, comprise seal ring body 1, described seal ring body 1 is by the arc snap section 2 that is positioned at the bottom, linkage section 3 in the middle of being positioned at constitutes with the seal section that is positioned at linkage section 3 tops 4, described seal section 4 is made of sealing lip 41 that is positioned at the outside and the seal convexity 42 that is positioned at the inboard, described sealing lip 41 end faces are the low structure of the high end of an end and that high end is higher than described seal convexity 42, that low end is lower than described seal convexity 42, in addition, the top of described seal convexity 42 is an arc surface.
The described gear hydraulic pump of present embodiment lower cover go out the oil pocket seal ring, can form double sealing in use, therefore sealing effect is better, sealing lip 41 end faces are the low structure of the high end of an end and that high end is higher than described seal convexity 42, that low end is lower than described seal convexity 42, therefore being easier to take place deformation makes it have bigger sealing surface, and the height setting of sealing lip 41 and seal convexity 42 can be formed with the sealing of level ground, therefore sealing effect can further be promoted, the described gear hydraulic pump of present embodiment lower cover go out the oil pocket seal ring, the situation that can prevent out the oil pocket leakage of oil takes place, and guarantees that the gear hydraulic pump can have stable delivery pressure.
Embodiment 2:
As shown in Figure 3, the described gear hydraulic pump of present embodiment lower cover go out the oil pocket seal ring, as different from Example 1: the top of the end face of described sealing lip 41 and seal convexity 42 all is provided with chase 5.
The described gear hydraulic pump of present embodiment lower cover go out the oil pocket seal ring, compare with embodiment 1 and also have following advantage: sealing effect can further be promoted.
Specific embodiment described herein only is that design of the present utility model is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (3)
1. a gear hydraulic pump lower cover goes out the oil pocket seal ring, comprise seal ring body (1), it is characterized in that described seal ring body (1) is by the arc snap section (2) that is positioned at the bottom, linkage section (3) in the middle of being positioned at and be positioned at seal section (4) formation at linkage section (3) top, described seal section (4) is by the sealing lip (41) that is positioned at the outside and be positioned at inboard seal convexity (42) formation, and described sealing lip (41) end face is the low structure of the high end of an end and that high end is higher than described seal convexity (42), that low end is lower than described seal convexity (42).
2. gear hydraulic pump lower cover according to claim 1 go out the oil pocket seal ring, the top that it is characterized in that described seal convexity (42) is an arc surface.
3. gear hydraulic pump lower cover according to claim 1 and 2 go out the oil pocket seal ring, it is characterized in that the end face of described sealing lip (41) and the top of seal convexity (42) all are provided with chase (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320085498 CN203098277U (en) | 2013-02-25 | 2013-02-25 | Oil outlet cavity sealing ring of lower cover body of gear hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320085498 CN203098277U (en) | 2013-02-25 | 2013-02-25 | Oil outlet cavity sealing ring of lower cover body of gear hydraulic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203098277U true CN203098277U (en) | 2013-07-31 |
Family
ID=48849685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320085498 Expired - Fee Related CN203098277U (en) | 2013-02-25 | 2013-02-25 | Oil outlet cavity sealing ring of lower cover body of gear hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203098277U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989238A (en) * | 2017-05-31 | 2017-07-28 | 浙江伟鑫金属制品有限公司 | The sealing mechanism of joint |
| CN107013682A (en) * | 2017-05-31 | 2017-08-04 | 浙江伟鑫金属制品有限公司 | Special-shaped ring seal |
| CN107178637A (en) * | 2017-07-27 | 2017-09-19 | 眉山中车制动科技股份有限公司 | A kind of safety valve with dual-seal function |
-
2013
- 2013-02-25 CN CN 201320085498 patent/CN203098277U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989238A (en) * | 2017-05-31 | 2017-07-28 | 浙江伟鑫金属制品有限公司 | The sealing mechanism of joint |
| CN107013682A (en) * | 2017-05-31 | 2017-08-04 | 浙江伟鑫金属制品有限公司 | Special-shaped ring seal |
| CN107178637A (en) * | 2017-07-27 | 2017-09-19 | 眉山中车制动科技股份有限公司 | A kind of safety valve with dual-seal function |
| CN107178637B (en) * | 2017-07-27 | 2018-08-31 | 眉山中车制动科技股份有限公司 | A kind of safety valve with dual-seal function |
| WO2019019523A1 (en) * | 2017-07-27 | 2019-01-31 | 眉山中车制动科技股份有限公司 | Safety valve having double-sealing function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20150225 |
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| EXPY | Termination of patent right or utility model |