CN203009130U - High-pressure oil pump box low-pressure sealing structure - Google Patents
High-pressure oil pump box low-pressure sealing structure Download PDFInfo
- Publication number
- CN203009130U CN203009130U CN 201220665368 CN201220665368U CN203009130U CN 203009130 U CN203009130 U CN 203009130U CN 201220665368 CN201220665368 CN 201220665368 CN 201220665368 U CN201220665368 U CN 201220665368U CN 203009130 U CN203009130 U CN 203009130U
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- China
- Prior art keywords
- pump box
- oil
- oil pump
- pressure
- pump
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- Expired - Fee Related
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Abstract
The utility model provides a high-pressure oil pump box low-pressure sealing structure which comprises a high-pressure oil pump box body provided with fuel oil and a machine oil channel. Two or more than two fuel oil or machine oil channel oil holes which are communicated in a crossing mode are formed in the oil pump box body. A ball valve which is sealed by craft hole countersink hole contracting is assembled in an auxiliary hole which is machined close to the channel oil holes in the wall face of the pump box body and on a position, where flowing is of no need, of a fluid channel. According to the high-pressure oil pump box low-pressure sealing structure, the problem that sealing reliability is bad because fluid pressure is too high is solved. Requirements on low-pressure sealing can be met, and cleanliness can be easily guaranteed.
Description
Technical field
The utility model relates to a kind of low pressure seal structure of high pressure oil pump pump box, particularly is mainly used in the low pressure seal structure of common rail high pressure oil pump.
Background technique
In prior art, the high pressure oil pump oil duct is processed on the aluminum pump box, and because this high pressure oil pump pump box is small and exquisite, spatial structure is limited, and required fuel oil and the oil passageway of high pressure oil pump has more crossing hole.Fuel oil and oil passageway are arranged, due to the restriction of pump box structure, in order to be communicated with oil duct on the high pressure oil pump pump box, part intersects the hole need to quote processing auxiliary process hole on pump box, and oilhole is communicated, in order to guarantee the airtight of oil duct, need to do plugging handling to the auxiliary process hole of processing.Bear the pressure below 6bar due to oil duct in the high pressure oil pump working procedure, for guaranteeing the reliability of oil channel sealing, need that also reducing is done in obstruction place and process.
There is dual mode to be used for the sealing of oil duct in prior art.A kind ofly namely be processed with tapped hole for as shown in Figure 3 on pump box, by screw thread stop up 6 and thread locking glue seal, the advantage of this structure is, can bear positive pressure, reliability is high; Shortcoming is that screw thread screws the aluminium bits of the part that can drop in process, thereby causes the rear turbidity test of pump box assembling defective, and screw thread adds the generation that trade union increases burr.The second is to stop up post directly by auxiliary hole, and no choke is processed, and the advantage of this structure is, in installation process, turbidity test are easy to assurance, and shortcoming is, in order to guarantee the reliability of high pressure oil pump, this structure can only be used for the sealing of atmospheric pressure and negative pressure, can not be used for the sealing of positive pressure.
Summary of the invention
The objective of the invention is the deficiency for above-mentioned prior art existence, provide a kind of sealing reliability high, can bear positive pressure, the ball valve sealing structure that turbidity test are easy to guarantee is in particular for the low pressure seal structure of common rail high pressure oil pump.
A kind of high pressure oil pump pump box low pressure seal structure that provides according to the utility model, comprise, be shaped with the high pressure oil pump pump box casing of fuel oil and oil passageway, it is characterized in that: on described oil pump pump box, be shaped with fuel oil or oil passageway oilhole that two or more intersections communicate, and do not need near the described passage oilhole of pump box casing wall fluid passage in the auxiliary process hole of the position processing of circulating, be equipped with by the be fond of salty food ball valve of hole reducing sealed of auxiliary hole.
The beneficial effects of the utility model are that because ball valve sealing structure has the orthofunction of suffering from one's own actions, sealing is reliable, satisfies the needs of low pressure seal after reducing, can not cause the increase of pump box burr during the ball valve installation.And simple in structure, easy for installation, the advantage of this structure is: 1, the ball valve mounting hole is cylindrical hole, has avoided the burr of prior art hole processing generation, and has lacked the operation of thread mill drilling.2, ball valve is standard piece, does not need again to develop, and has reduced development cost.3, making from centering of ball valve sphere forms a reliable sealing strip between auxiliary process hole 2 and ball valve 3.Wrap the upper-end surface of ball valve 3 after counterbore 1 bottom surface reducing, can effectively reduce the sealing reliability that causes because hydrodynamic pressure is too high and reduce.Satisfied the requirement of low pressure seal, reduced cost, and turbidity test are more prone to guarantee.
Description of drawings
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the schematic perspective view that uses high pressure oil pump of the present utility model.
Fig. 2 is the ball valve sealing structure generalized section of the utility model high pressure oil pump shown in Figure 1.
Fig. 3 is a kind of threaded sealing structure of prior art.
In figure: 1 counterbore, 2 auxiliary process holes, 3 ball valves, 4 asphalt channels, 5 pump boxs, 6 screw threads stop up.
Embodiment
Consult, Fig. 2.The low pressure seal structure of high pressure oil pump pump box, comprise, be shaped with the high pressure oil pump pump box casing of fuel oil and oil passageway, be shaped with two or more asphalt channel oilholes that the several angle intersection communicates on pump box 5, be processed with auxiliary process hole 2 in the asphalt channel 4 of this fuel oil or the oil passageway position that communicates with pump box 5 walls, the position that communicates with the wall of pump box 1, auxiliary process hole 2 is processed with reducing and processes required counterbore 1, counterbore is used for carrying out reducing after ball valve is in place to be processed, environment under low pressure and reliability when working to satisfy high pressure oil pump.Ball valve 3 snugly fits in auxiliary process hole 2.The internal diameter in auxiliary process hole 2 is less than the external diameter of ball valve 3, and is interference fit each other.
During manufacturing, oil duct 4 is cylindrical hole, and auxiliary process hole 2 is slightly larger than the internal diameter of oil duct 4, is conducive to the fine finishing in auxiliary process hole 2, and the external diameter of counterbore 1 is greater than auxiliary process hole 2, the location when being conducive to the reducing of counterbore 1 bottom.During installation, ball valve 3 is put into auxiliary process hole 2, press-fits to counterbore 1 base plane below, at last counterbore 1 base plane is carried out reducing and processes.
Claims (3)
1. high pressure oil pump pump box low pressure seal structure, comprise, be shaped with the high pressure oil pump pump box casing of fuel oil and oil passageway, it is characterized in that: on described oil pump pump box, be shaped with fuel oil or oil passageway oilhole that two or more intersections communicate, and do not need near the described passage oilhole of pump box casing wall fluid passage in the auxiliary process hole of the position processing of circulating, be equipped with by the be fond of salty food ball valve of hole reducing sealed of auxiliary hole.
2. high pressure oil pump pump box low pressure seal structure as claimed in claim 1, is characterized in that, the internal diameter in auxiliary process hole (2) is less than the external diameter of ball valve (3), and be interference fit each other.
3. high pressure oil pump pump box low pressure seal structure as claimed in claim 1, is characterized in that, ball valve (3) presses fit in counterbore (1) base plane below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220665368 CN203009130U (en) | 2012-12-06 | 2012-12-06 | High-pressure oil pump box low-pressure sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220665368 CN203009130U (en) | 2012-12-06 | 2012-12-06 | High-pressure oil pump box low-pressure sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203009130U true CN203009130U (en) | 2013-06-19 |
Family
ID=48600732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220665368 Expired - Fee Related CN203009130U (en) | 2012-12-06 | 2012-12-06 | High-pressure oil pump box low-pressure sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203009130U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2564654A (en) * | 2017-07-17 | 2019-01-23 | Delphi Int Operations Luxembourg Sarl | High pressure fuel pump |
-
2012
- 2012-12-06 CN CN 201220665368 patent/CN203009130U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2564654A (en) * | 2017-07-17 | 2019-01-23 | Delphi Int Operations Luxembourg Sarl | High pressure fuel pump |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20201206 |