CN104500950A - Pressure relief device of oil pump - Google Patents
Pressure relief device of oil pump Download PDFInfo
- Publication number
- CN104500950A CN104500950A CN201410686802.2A CN201410686802A CN104500950A CN 104500950 A CN104500950 A CN 104500950A CN 201410686802 A CN201410686802 A CN 201410686802A CN 104500950 A CN104500950 A CN 104500950A
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- CN
- China
- Prior art keywords
- steel ball
- oil pump
- pressure relief
- pressure
- relief device
- 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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- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The invention relates to the technical field of oil pumps, discloses a pressure relief device of an oil pump and relates to a body of an oil pump. The pressure relief device comprises a pressure relief valve, a pressure limiting spring, a steel ball and a steel ball seat. One end of the pressure limiting spring is connected with the pressure relief valve, the other end of the pressure limiting spring is connected with the steel ball, and the steel ball seat is matched with the steel ball, is mounted in a pressure relief hole of a body of the oil pump and is connected with the steel ball. The pressure relief device has the advantages that the steel ball seat is additionally arranged in the pressure relief hole on a principle that the basic structure of the pressure relief valve is unchanged, accordingly, the abrasion resistance of the steel ball and the pump body can be enhanced, the service life of the oil pump can be prolonged, and the sealing performance of the oil pump can be improved.
Description
Technical field
The present invention relates to oil pump technical field, refer more particularly to a kind of oil pump pressure relief device.
Background technique
Present oil pump is general, and all with Decompression valves, when oil pump inside reaches certain pressure, Decompression valves is opened, and part machine oil is shunted from Decompression valves, and oil pump pressure reduces, and when pressure drops under Decompression valves limit value, Decompression valves cuts out.Existing Decompression valves comprises plug screw, spring, guide rod, piston, when oil pump inside reaches certain pressure, overcomes spring force and pushes piston to plunger, and part machine oil is by the pressure side flowing into intake side through piston head, and oil pump pressure reduces; When pressure drops under Decompression valves limit value, piston pushes back by spring force, blocks on the pressure side hydraulic fluid port, and Decompression valves cuts out.Oil pump as shown in Figure 1, in steel ball and pump housing pressure release aperture point of contact serious wear, envelope is oil incessantly, and cause engine oil pressure not enough, oil pump is short for working life.
Summary of the invention
The object of the present invention is to provide a kind of oil pump pressure relief device, wear-resisting property improves, long service life, good airproof performance.
For achieving the above object, the present invention is by the following technical solutions:
A kind of oil pump pressure relief device, relate to oil pump main body, comprise Decompression valves, pressure limiting spring, steel ball, described pressure limiting spring one end is connected with described Decompression valves, the other end is connected with described steel ball, it is characterized in that, also comprise the steel ball seat suitable with described steel ball, described steel ball seat to be arranged in described oil pump main body relief hole and to be connected with described steel ball.
Further, described steel ball seat and described oil pump main body tabling.
Beneficial effect of the present invention: the present invention, under the principle not changing Decompression valves basic structure, by adding steel ball seat in relief hole, enhances the wear resistance of steel ball and the pump housing, improves working life and the sealing of oil pump.
Accompanying drawing explanation
Fig. 1 is the oil pump pressure relief device of prior art;
Fig. 2 is a kind of oil pump pressure relief device of the present invention.
In figure, 1-Decompression valves, 2-pressure limiting spring, 3-steel ball, 4-steel ball seat, 5-oil pump main body.
Embodiment
Below in conjunction with the drawings and specific embodiments, technological scheme of the present invention is further described in detail.
Shown in composition graphs 2, a kind of oil pump pressure relief device, relate to oil pump main body 5, comprise Decompression valves 1, pressure limiting spring 2, steel ball 3, pressure limiting spring 2 one end is connected with Decompression valves 1, the other end is connected with steel ball 3, also comprises the steel ball seat 4 suitable with steel ball 3, and steel ball seat 4 to be arranged in oil pump main body 5 relief hole and to be connected with steel ball 3.
In the present embodiment, steel ball seat 4 and oil pump main body 5 tabling.
The present invention, under the principle not changing Decompression valves basic structure, by adding steel ball seat in relief hole, enhances the wear resistance of steel ball and the pump housing, improves working life and the sealing of oil pump.
It should be noted last that, above embodiment is only in order to illustrate technological scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technological scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (2)
1. an oil pump pressure relief device, relate to oil pump main body, comprise Decompression valves, pressure limiting spring, steel ball, described pressure limiting spring one end is connected with described Decompression valves, the other end is connected with described steel ball, it is characterized in that, also comprise the steel ball seat suitable with described steel ball, described steel ball seat to be arranged in described oil pump main body relief hole and to be connected with described steel ball.
2. oil pump pressure relief device according to claim 1, is characterized in that, described steel ball seat and described oil pump main body tabling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410686802.2A CN104500950A (en) | 2014-11-25 | 2014-11-25 | Pressure relief device of oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410686802.2A CN104500950A (en) | 2014-11-25 | 2014-11-25 | Pressure relief device of oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104500950A true CN104500950A (en) | 2015-04-08 |
Family
ID=52942382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410686802.2A Withdrawn CN104500950A (en) | 2014-11-25 | 2014-11-25 | Pressure relief device of oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104500950A (en) |
-
2014
- 2014-11-25 CN CN201410686802.2A patent/CN104500950A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20150408 |