CN211287937U - Constant pressure mechanism for oil way of fuel pump assembly - Google Patents
Constant pressure mechanism for oil way of fuel pump assembly Download PDFInfo
- Publication number
- CN211287937U CN211287937U CN201922076206.3U CN201922076206U CN211287937U CN 211287937 U CN211287937 U CN 211287937U CN 201922076206 U CN201922076206 U CN 201922076206U CN 211287937 U CN211287937 U CN 211287937U
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- China
- Prior art keywords
- pressure relief
- pressure
- valve core
- tee joint
- fuel pump
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- Expired - Fee Related
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Abstract
The utility model discloses a constant pressure mechanism for an oil circuit of a fuel pump assembly, which comprises a jet tee joint and a pressure relief device; one end of the jet tee joint in the horizontal direction is provided with a flow inlet, and the other end of the jet tee joint is provided with a flow inlet; a pressure relief opening is formed in the vertical direction of the jet tee joint; a pressure relief device is arranged in the pressure relief opening; the pressure relief device comprises a pressure relief valve core, a pressure relief spring and a pressure relief pressure ring; the pressure relief valve core is arranged in the pressure relief opening; the pressure relief valve core is provided with a pressure relief spring; the pressure relief valve core and the pressure relief spring are sealed in the pressure relief opening by the pressure relief pressing ring. The structure of the scheme is small in volume, easy to adjust and simple to assemble; the constant-pressure pipeline has a constant-pressure effect, and cannot cause loss of pipeline flow under high flow; the pressure reducing device has good pressure reducing effect, avoids overhigh pressure of an oil way, and is safe and reliable.
Description
Technical Field
The utility model relates to a use constant voltage mechanism in fuel pump oil circuit
Background
The fuel pump has the main characteristics of compact structure, low cost and functions of one-way oil inlet and overpressure oil spilling. The working principle is as follows: after the permanent magnet motor is electrified, the pump body is driven to rotate to suck fuel oil from the oil inlet device, the fuel oil flows through the interior of the electric fuel pump and is extruded from the oil outlet to supply the fuel oil to the fuel oil system. When the engine stops working, in order to keep the pressure in the oil circuit of the automobile, a one-way valve structure is arranged at the outlet of the electric fuel pump; meanwhile, in order to prevent the oil circuit from being blocked, the pressure of the fuel pump breaks the oil circuit, and an overflow valve structure for overpressure overflow is arranged on the fuel pump. The control of the pressure of an oil way is also of great importance, and most of the existing oil way constant-pressure devices are provided with oil pressure regulating valves for constant pressure, so that the cost is too high; the other is to reduce the flow and change the voltage to calculate the pressure, which results in a costly and cumbersome operation.
Disclosure of Invention
The utility model discloses the purpose is: the constant pressure mechanism used in the oil circuit of the fuel pump assembly has the advantages of good operation, small volume, easy adjustment and replacement.
The technical scheme of the utility model is that: a constant pressure mechanism for an oil path of a fuel pump assembly comprises a jet tee joint and a pressure relief device; one end of the jet tee joint in the horizontal direction is provided with a flow inlet, and the other end of the jet tee joint is provided with a flow outlet; a pressure relief opening is formed in the vertical direction of the jet tee joint; a pressure relief device is arranged in the pressure relief opening; the pressure relief device comprises a pressure relief valve core, a pressure relief spring and a pressure relief pressure ring; the pressure relief valve core is arranged in the pressure relief opening; a pressure relief spring is arranged on the pressure relief valve core; the pressure relief valve core and the pressure relief spring are sealed in the pressure relief opening by the pressure relief pressing ring.
Preferably, the pressure relief valve core is made of rubber.
Preferably, the pressure relief pressing ring is riveted and sealed by adopting hot riveting.
Preferably, a groove is arranged on the outer side of the outflow port; and a sealing ring is arranged in the groove.
The utility model has the advantages that:
1. the structure of the scheme is small in volume, easy to adjust and simple to assemble;
2. the constant-pressure pipeline has a constant-pressure effect, and cannot cause loss of pipeline flow under high flow;
3. the pressure reducing device has good pressure reducing effect, avoids overhigh pressure of an oil way, and is safe and reliable.
Drawings
The invention will be further described with reference to the following drawings and examples:
FIG. 1 is a schematic diagram of a constant pressure mechanism for an oil path of a fuel pump assembly according to the present disclosure;
FIG. 2 is a schematic external view of a constant pressure mechanism for an oil circuit of a fuel pump assembly according to the present disclosure;
wherein: 1. a jet tee joint; 2. a pressure relief device; 11. a flow inlet; 12. an outflow port; 13. a pressure relief port; 14. a groove; 15. a seal ring; 21. a pressure relief valve core; 21. a pressure relief spring; 23. and (5) releasing the pressure and pressing the ring.
Detailed Description
Example (b):
as shown in the attached figures 1-2, the constant pressure mechanism for the oil circuit of the fuel pump assembly comprises a jet tee joint 1 and a pressure relief device 2; one end of the jet tee joint 1 in the horizontal direction is provided with a flow inlet 11, and the other end of the jet tee joint is provided with a flow outlet 12; a pressure relief opening 13 is formed in the vertical direction of the jet tee 1; a pressure relief device 2 is arranged in the pressure relief port 13; the pressure relief device 2 comprises a pressure relief valve core 21, a pressure relief spring 22 and a pressure relief pressure ring 23; the pressure relief valve core 21 is arranged in the pressure relief port 13; a pressure relief spring 22 is arranged on the pressure relief valve core 21; the pressure relief pressure ring 23 seals the pressure relief valve core 21 and the pressure relief spring 22 in the pressure relief port 13; the pressure relief valve core 21 is made of rubber; firstly, installing a pressure relief valve core 21, then installing a pressure relief spring 22, and finally riveting and sealing the pressure relief pressing ring 23 by adopting hot riveting; a groove 14 is arranged outside the outflow port 12; a sealing ring 15 is arranged in the groove 14, and an O-shaped sealing ring is adopted in the embodiment.
Under the normal pressure state, a pressure relief valve core 21 of the pressure relief device 2 seals a pressure relief opening; oil enters from the inlet 11, if the outlet 12 is blocked, and the pressure is abnormal, the pressure relief valve core 21 of the pressure relief device 2 moves downwards under a certain pressure, and the pressure relief port 13 is opened to relieve the pressure, so that the pressure of the oil line is kept normal, and the safety work of the oil line is guaranteed.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical concepts of the present invention be covered by the claims of the present invention.
Claims (4)
1. The utility model provides a constant pressure mechanism for fuel pump assembly oil circuit which characterized in that: comprises a jet tee joint and a pressure relief device; one end of the jet tee joint in the horizontal direction is provided with a flow inlet, and the other end of the jet tee joint is provided with a flow outlet; a pressure relief opening is formed in the vertical direction of the jet tee joint; a pressure relief device is arranged in the pressure relief opening; the pressure relief device comprises a pressure relief valve core, a pressure relief spring and a pressure relief pressure ring; the pressure relief valve core is arranged in the pressure relief opening; a pressure relief spring is arranged on the pressure relief valve core; the pressure relief valve core and the pressure relief spring are sealed in the pressure relief opening by the pressure relief pressing ring.
2. The constant pressure mechanism for an oil pump assembly of a fuel pump of claim 1, wherein: the pressure relief valve core is made of rubber.
3. The constant pressure mechanism for an oil pump assembly of a fuel pump of claim 1, wherein: the pressure relief pressing ring is riveted and sealed by adopting hot riveting.
4. The constant pressure mechanism for an oil pump assembly of a fuel pump of claim 1, wherein: a groove is formed in the outer side of the outflow port; and a sealing ring is arranged in the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922076206.3U CN211287937U (en) | 2019-11-27 | 2019-11-27 | Constant pressure mechanism for oil way of fuel pump assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922076206.3U CN211287937U (en) | 2019-11-27 | 2019-11-27 | Constant pressure mechanism for oil way of fuel pump assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211287937U true CN211287937U (en) | 2020-08-18 |
Family
ID=72022275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922076206.3U Expired - Fee Related CN211287937U (en) | 2019-11-27 | 2019-11-27 | Constant pressure mechanism for oil way of fuel pump assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211287937U (en) |
-
2019
- 2019-11-27 CN CN201922076206.3U patent/CN211287937U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20200818 Termination date: 20211127 |