CN214366487U - High-performance plunger and barrel assembly of injection pump - Google Patents
High-performance plunger and barrel assembly of injection pump Download PDFInfo
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- CN214366487U CN214366487U CN202023081622.1U CN202023081622U CN214366487U CN 214366487 U CN214366487 U CN 214366487U CN 202023081622 U CN202023081622 U CN 202023081622U CN 214366487 U CN214366487 U CN 214366487U
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- plunger
- seat
- hole
- step hole
- fixed sleeve
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Abstract
A high-performance fuel injection pump plunger matching part comprises a plunger seat, wherein a step hole is processed in the plunger seat, and comprises an upper step hole and a lower step hole; a fixed sleeve is sleeved in the lower step hole, and a through hole is processed in the fixed sleeve; plungers are movably arranged in the through holes and the upper step holes; the upper end of the fixed sleeve is provided with a mounting distance with a step surface between the upper step hole and the lower step hole, and the outer side of the upper end of the fixed sleeve is provided with a flow guide conical surface; a circle of annular oil groove is processed on the side wall of the plunger seat on the side face of the flow guide conical surface, and the bottom of the annular oil groove is connected with an oil outlet. Compared with the prior art, the utility model discloses a high performance injection pump plunger matching parts is provided with fixed cover in the plunger seat to set up the water conservancy diversion conical surface on fixed cover surface, when taking place the fuel and leaking, can play the guide effect to the fuel of leaking, make it discharge through annular oil groove and oil outlet.
Description
Technical Field
The utility model relates to an injection pump field specifically indicates a high performance injection pump plunger matching parts.
Background
The oil injection pump supplies oil through camshaft drive plunger reciprocating motion during operation, and in order to prevent the fuel leakage, the plunger is very high with the through-hole cooperation degree requirement in the plunger seat, but the plunger is piston motion for a long time, causes wearing and tearing easily after its excircle surface rubs, appears the clearance with between the plunger hole to lead to the fuel feeding to reveal, cause the fuel feeding oil pressure not enough, make diesel engine power take off not enough.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to above-mentioned prior art not enough, and provide a high performance injection pump plunger matching parts.
In order to solve the technical problem, the utility model discloses a technical scheme is:
a high-performance fuel injection pump plunger matching part comprises a plunger seat, wherein a step hole is processed in the plunger seat, and comprises an upper step hole and a lower step hole; a fixed sleeve is sleeved in the lower step hole, and a through hole is processed in the fixed sleeve; plungers are movably arranged in the through holes and the upper step holes; the upper end of the fixed sleeve is provided with a mounting distance with a step surface between the upper step hole and the lower step hole, and the outer side of the upper end of the fixed sleeve is provided with a flow guide conical surface; a circle of annular oil groove is processed on the side wall of the plunger seat on the side face of the flow guide conical surface, and the bottom of the annular oil groove is connected with an oil outlet.
Furthermore, an oil outlet valve is installed at the upper end of the plunger seat, a plunger cavity is arranged between the plunger and the oil outlet valve, and an oil inlet hole and an oil return hole are respectively machined in two sides of the plunger cavity.
Further, the outer side of the bottom of the plunger seat is in threaded connection with an upper spring seat, and a lower spring seat is sleeved at the bottom of the plunger; and a spring is arranged between the upper spring seat and the lower spring seat.
Compared with the prior art, the utility model discloses a high performance injection pump plunger matching parts is provided with fixed cover in the plunger seat to set up the water conservancy diversion conical surface on fixed cover surface, when taking place the fuel and leaking, can play the guide effect to the fuel of leaking, make it discharge through annular oil groove and oil outlet.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
the oil pump comprises a plunger seat 1, a plunger seat 2, a fixing sleeve 3, a plunger, a flow guide conical surface 4, an annular oil groove 5, an oil outlet hole 6, an oil outlet valve 7, an oil outlet valve 8, a plunger cavity 9, an oil inlet hole 10, an oil return hole 11, a spring upper seat 12, a spring lower seat 13 and a spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below.
As shown in fig. 1, a high-performance fuel injection pump plunger and barrel assembly comprises a plunger seat 1, wherein a stepped hole is processed in the plunger seat 1, and the stepped hole comprises an upper stepped hole and a lower stepped hole; a fixed sleeve 2 is sleeved in the lower step hole, and a through hole is processed in the fixed sleeve 2; a plunger 3 is movably arranged in the through hole and the upper step hole; the mounting distance is reserved between the upper end of the fixed sleeve 2 and the step surface between the upper step hole and the lower step hole, a flow guide conical surface 4 is machined on the outer side of the upper end of the fixed sleeve 2, and the inner diameter of the flow guide conical surface 4 is smaller than that of the upper step hole; a circle of annular oil groove 5 is processed on the side wall of the plunger seat 1 on the side surface of the flow guide conical surface 4, and the bottom of the annular oil groove 5 is connected with an oil outlet 6.
An oil outlet valve 7 is installed at the upper end of the plunger seat 1, a plunger cavity 8 is arranged between the plunger 3 and the oil outlet valve 7, and an oil inlet hole 9 and an oil return hole 10 are respectively machined on two sides of the plunger cavity 8.
The outer side of the bottom of the plunger seat 1 is in threaded connection with an upper spring seat 11, and the bottom of the plunger 3 is sleeved with a lower spring seat 12; a spring 13 is arranged between the upper spring seat 11 and the lower spring seat 12.
The utility model discloses in set up fixed cover 2 in plunger seat 1, when taking place the fuel drippage, the water conservancy diversion inclined plane 4 of fixed cover 2 plays fine guide effect to the fuel of drippage, makes it emit into to annular oil groove 5 in, prevents that the fuel from continuing the seepage and causing the pollution to other parts of injection pump.
The present invention is not limited to the above-described embodiments, and those skilled in the art can make modifications or changes without departing from the spirit of the present invention.
Claims (3)
1. The utility model provides a high performance injection pump plunger and barrel assembly which characterized in that: the plunger piston comprises a plunger piston seat, wherein a step hole is processed in the plunger piston seat and comprises an upper step hole and a lower step hole; a fixed sleeve is sleeved in the lower step hole, and a through hole is processed in the fixed sleeve; plungers are movably arranged in the through holes and the upper step holes; the upper end of the fixed sleeve is provided with a mounting distance with a step surface between the upper step hole and the lower step hole, and the outer side of the upper end of the fixed sleeve is provided with a flow guide conical surface; a circle of annular oil groove is processed on the side wall of the plunger seat on the side face of the flow guide conical surface, and the bottom of the annular oil groove is connected with an oil outlet.
2. The high-performance fuel injection pump plunger and barrel assembly of claim 1, wherein: an oil outlet valve is installed at the upper end of the plunger seat, a plunger cavity is arranged between the plunger and the oil outlet valve, and an oil inlet hole and an oil return hole are respectively machined in two sides of the plunger cavity.
3. The high-performance fuel injection pump plunger and barrel assembly of claim 1, wherein: the outer side of the bottom of the plunger seat is in threaded connection with an upper spring seat, and the bottom of the plunger is sleeved with a lower spring seat; and a spring is arranged between the upper spring seat and the lower spring seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023081622.1U CN214366487U (en) | 2020-12-18 | 2020-12-18 | High-performance plunger and barrel assembly of injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023081622.1U CN214366487U (en) | 2020-12-18 | 2020-12-18 | High-performance plunger and barrel assembly of injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214366487U true CN214366487U (en) | 2021-10-08 |
Family
ID=77986223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023081622.1U Active CN214366487U (en) | 2020-12-18 | 2020-12-18 | High-performance plunger and barrel assembly of injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214366487U (en) |
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2020
- 2020-12-18 CN CN202023081622.1U patent/CN214366487U/en active Active
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