CN103206325B - A kind of fuel pump with safety valve - Google Patents
A kind of fuel pump with safety valve Download PDFInfo
- Publication number
- CN103206325B CN103206325B CN201310142409.2A CN201310142409A CN103206325B CN 103206325 B CN103206325 B CN 103206325B CN 201310142409 A CN201310142409 A CN 201310142409A CN 103206325 B CN103206325 B CN 103206325B
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- CN
- China
- Prior art keywords
- fuel pump
- pump body
- oil
- negative pressure
- spring
- 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.)
- Expired - Fee Related
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Abstract
The present invention relates to a kind of fuel pump with safety valve, it comprises fuel pump body (1), upper cover (2) and lower cover (3), negative pressure spring (10) is provided with successively between described upper cover (2) and fuel pump body (1), spring jacking block (9) and negative pressure diaphragm (8), fuel-displaced diaphragm (7) is provided with between lower cover (3) and fuel pump body (1), inlet space (16) is offered in fuel pump body (1), vacuum cavitations room (17) and go out grease chamber (18), the outlet port of inlet space (16) is separately installed with check valve sheet (6) and banking stop (5) with the ingress going out grease chamber (18), fuel pump body (1) is also provided with oil inlet pipe (13), oil inlet pipe (13) is provided with oil-feed spring (11) and ball valve (12) with the intersection of fuel pump body (1).The invention has the advantages that: the strong and long service life of working stability, accommodative ability of environment.
Description
Technical field
The present invention relates to universal machine engine oil inlet system unit, particularly a kind of fuel pump with safety valve.
Background technique
For oil-burning machine product, normally fuel tank intermediate fuel oil supply engine under gravity, but during a lot of engine design, for various reasons, the position of fuel tank is very low, thus when causing fuel delivery, pressure is inadequate, cannot meet motor acting requirement.Thus design fuel pump, it is on the low side that fuel pump is widely used in fuel tank position, and fuel feeding pressure cannot meet in the engine design of engine demand.Oil well oil outlet tube in the fuel supply chamber of fuel pump enters in motor, some pressure oil after engine oil inlet is saturated gets back in the fuel supply chamber of fuel pump by reflow pipe, in the process, because the oil pressure in the fuel supply chamber of return tube and motor and fuel pump is inconsistent, fuel pump in the market does not all have safe design, when motor is by when reducing at a high speed low speed, throttle is closed instantaneously, now can produce the high pressure return pressure of moment, by the diaphragm of fuel pump and parts damages, thus fuel feeding is unstable to cause motor to occur, even leakage of oil, there is the potential safety hazards such as serious fire.
Summary of the invention
The object of the invention is to the shortcoming overcoming prior art, the fuel pump with safety valve of the strong and long service life of a kind of working stability, accommodative ability of environment is provided, to solve when motor is by when reducing at a high speed low speed, throttle is closed instantaneously, produce the high pressure return pressure of moment, damage the diaphragm of fuel pump and parts, thus fuel feeding is unstable to cause motor to occur, even the problem such as leakage of oil.
Object of the present invention is achieved through the following technical solutions: a kind of fuel pump with safety valve, it comprises fuel pump body, upper cover and lower cover, upper cover and lower cover are bolted on the both sides of fuel pump body, negative pressure spring is provided with successively between described upper cover and fuel pump body, spring jacking block and negative pressure diaphragm, negative pressure spring and spring jacking block are connected, the front-end face of spring jacking block is pressed on negative pressure diaphragm, fuel-displaced diaphragm is provided with between lower cover and fuel pump body, inlet space is offered in fuel pump body, vacuum cavitations room and go out grease chamber, inlet space is communicated with vacuum cavitations room, vacuum cavitations room with go out grease chamber and be communicated with, the outlet port of inlet space is separately installed with check valve sheet and banking stop with the ingress going out grease chamber, check valve sheet and banking stop are fixed on fuel pump body by valve shaft, fuel pump body is also provided with oil inlet pipe, the intersection of oil inlet pipe and fuel pump body is provided with oil-feed spring and ball valve, one end of oil-feed spring is fixed on the inwall of oil inlet pipe, the other end of oil-feed spring coordinates with ball valve.
The end of described oil inlet pipe is provided with dust cap.
The arranged outside of described upper cover has filter core.
Four angles of described fuel pump body are provided with the bolt hole that four vertically run through fuel pump body.
The present invention has the following advantages:
1, adopt special (purpose) rubber formula, the low and good stability of diaphragm cost, and high-low temperature resistant, to the strong adaptability of environment, for the stable operation of fuel pump provides great convenience.
2, escape way is provided with in fuel pump body of the present invention, in inlet space with go out between grease chamber to be provided with vacuum cavitations room, vacuum cavitations room is set to buffer area, effectively prevent motor suddenly by when dropping at a high speed low speed, after supplying oil of carburetor reduces rapidly, fuel pressure in fuel feeding path, by the bad phenomenon of fuel pump diaphragm pressure break, improves the working life of fuel pump further.
3, fuel pump body adopts 4 fixing modes, upper cover and lower cover is fixed on fuel pump body, ensure that the steadiness between fuel pump body and upper and lower covers and sealing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is that Fig. 1 is along B-B sectional structure schematic diagram;
Fig. 3 is the structural representation after Fig. 1 opens upper cover;
In figure: 1-fuel pump body, 2-upper cover, 3-lower cover, 4-valve shaft, 5-banking stop, 6-check valve sheet, the fuel-displaced diaphragm of 7-, 8-negative pressure diaphragm, 9-spring jacking block, 10-negative pressure spring, 11-oil-feed spring, 12-ball valve, 13-oil inlet pipe, 14-dust cap, 15-filter core, 16-inlet space, 17-vacuum cavitations room, 18-goes out grease chamber, 19-bolt hole.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described, but protection scope of the present invention is not limited to the following stated.
As Fig. 1, shown in Fig. 2 and Fig. 3, a kind of fuel pump with safety valve, it comprises fuel pump body 1, upper cover 2 and lower cover 3, four angles of fuel pump body 1 are provided with the bolt hole 19 that four vertically run through fuel pump body 1, upper cover 2 and lower cover 3 are bolted on the both sides of fuel pump body 1, the arranged outside of upper cover 2 has filter core 15, negative pressure spring 10 is provided with successively between described upper cover 2 and fuel pump body 1, spring jacking block 9 and negative pressure diaphragm 8, negative pressure spring 10 and spring jacking block 9 are connected, the front-end face of spring jacking block 9 is pressed on negative pressure diaphragm 8, fuel-displaced diaphragm 7 is provided with between lower cover 3 and fuel pump body 1, inlet space 16 is offered in fuel pump body 1, vacuum cavitations room 17 and go out grease chamber 18, inlet space 16 is communicated with vacuum cavitations room 17, vacuum cavitations room 17 with go out grease chamber 18 and be communicated with, the outlet port of inlet space 16 is separately installed with check valve sheet 6 and banking stop 5 with the ingress going out grease chamber 18, check valve sheet 6 and banking stop 5 are fixed on fuel pump body 1 by valve shaft 4, fuel pump body 1 is also provided with oil inlet pipe 13, oil inlet pipe 13 is provided with oil-feed spring 11 and ball valve 12 with the intersection of fuel pump body 1, one end of oil-feed spring 11 is fixed on the inwall of oil inlet pipe 13, the other end of oil-feed spring 11 coordinates with ball valve 12.
As shown in Figure 1, the end of oil inlet pipe 13 is provided with dust cap 14.
As shown in Figure 3, oil inlet pipe 13 is below provided with oil-feed spring 11 and ball valve 12, is in closed condition under ball valve 12 normal state, by inlet space 16 and the path blockade that goes out between grease chamber 18, forms simple and easy, a safe Decompression valves.
As shown in Figure 2, the inlet space 16 of fuel pump body 1 and go out in grease chamber 18 to be equipped with respectively check valve sheet 6 and banking stop 5, check valve sheet 6 and banking stop 5 are fixed on fuel pump body 1 by valve shaft 4, negative pressure spring 10 is housed between fuel pump body 1 and upper cover 2, spring jacking block 9 and negative pressure diaphragm 8, upper cover 2 there is negative tube, be connected to motor, by the negative pressure that motor acting produces, negative pressure diaphragm 8 is driven to move, by fuel oil sucking-off from inlet space 16, it is inner that fuel oil flows into vacuum cavitations room 17 by check valve sheet 6 by inlet space 16, flow into out in grease chamber 18 by another check valve sheet 6 again.
Claims (1)
1. the fuel pump with safety valve, it comprises fuel pump body (1), upper cover (2) and lower cover (3), upper cover (2) and lower cover (3) are bolted on the both sides of fuel pump body (1), inlet space (16) is offered in fuel pump body (1), vacuum cavitations room (17) and go out grease chamber (18), inlet space (16) is communicated with vacuum cavitations room (17), vacuum cavitations room (17) with go out grease chamber (18) and be communicated with, fuel pump body (1) is also provided with oil inlet pipe (13), fuel-displaced diaphragm (7) is provided with between lower cover (3) and fuel pump body (1), one end of oil-feed spring (11) is fixed on the inwall of oil inlet pipe (13), the other end of oil-feed spring (11) coordinates with ball valve (12), it is characterized in that: between described upper cover (2) and fuel pump body (1), be provided with negative pressure spring (10) successively, spring jacking block (9) and negative pressure diaphragm (8), negative pressure spring (10) and spring jacking block (9) are connected, the front-end face of spring jacking block (9) is pressed on negative pressure diaphragm (8), the outlet port of inlet space (16) is separately installed with check valve sheet (6) and banking stop (5) with the ingress going out grease chamber (18), check valve sheet (6) and banking stop (5) are fixed on fuel pump body (1) by valve shaft (4),
The intersection of oil inlet pipe (13) and fuel pump body (1) is provided with oil-feed spring (11) and ball valve (12), is in closed condition under ball valve (12) normal state, by inlet space (16) and the path blockade that goes out between grease chamber (18);
(2) have negative tube to upper cover, be connected to motor, by the negative pressure that motor acting produces, drive negative pressure diaphragm (8) motion, by fuel oil sucking-off from inlet space (16), it is inner that fuel oil flows into vacuum cavitations room (17) by check valve sheet (6) by inlet space (16), then flow into out in grease chamber (18) by another check valve sheet (6);
The end of described oil inlet pipe (13) is provided with dust cap (14);
The arranged outside of described upper cover (2) has filter core (15); Four angles of described fuel pump body (1) are provided with the bolt hole (19) that four vertically run through fuel pump body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310142409.2A CN103206325B (en) | 2013-04-23 | 2013-04-23 | A kind of fuel pump with safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310142409.2A CN103206325B (en) | 2013-04-23 | 2013-04-23 | A kind of fuel pump with safety valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103206325A CN103206325A (en) | 2013-07-17 |
| CN103206325B true CN103206325B (en) | 2015-11-11 |
Family
ID=48753687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310142409.2A Expired - Fee Related CN103206325B (en) | 2013-04-23 | 2013-04-23 | A kind of fuel pump with safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103206325B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104421073B (en) * | 2013-08-20 | 2017-03-15 | 陈俭敏 | Electrospray throttle valve with voltage stabilizing fueller |
| CN103573499A (en) * | 2013-10-25 | 2014-02-12 | 安徽工贸职业技术学院 | Fuel pump for automobile |
| CN103742394B (en) * | 2014-01-13 | 2015-12-16 | 宁波杰瑞活塞有限公司 | negative pressure gasoline pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1148139A (en) * | 1995-06-30 | 1997-04-23 | 轨道工程有限公司 | Fuel pumps for internal combustion engines |
| CN1227314A (en) * | 1998-01-09 | 1999-09-01 | 本田技研工业株式会社 | Fluid pump |
| CN1410666A (en) * | 2002-11-09 | 2003-04-16 | 陈其安 | Self overflow type oil suction pump of engine carburator |
| CN201265469Y (en) * | 2008-09-18 | 2009-07-01 | 苏州百胜动力机器有限公司 | Rubber valve oil fuel pump of engine |
| CN201892019U (en) * | 2010-11-25 | 2011-07-06 | 湖南机油泵股份有限公司 | Internal discharge type safety valve rotor oil pump |
| CN203175727U (en) * | 2013-04-23 | 2013-09-04 | 成都恒高机械电子有限公司 | Fuel pump with safety valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10252595A (en) * | 1997-03-13 | 1998-09-22 | Mikuni Adetsuku:Kk | Diaphragm type fuel pump having lubricating oil supply port |
-
2013
- 2013-04-23 CN CN201310142409.2A patent/CN103206325B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1148139A (en) * | 1995-06-30 | 1997-04-23 | 轨道工程有限公司 | Fuel pumps for internal combustion engines |
| CN1227314A (en) * | 1998-01-09 | 1999-09-01 | 本田技研工业株式会社 | Fluid pump |
| CN1410666A (en) * | 2002-11-09 | 2003-04-16 | 陈其安 | Self overflow type oil suction pump of engine carburator |
| CN201265469Y (en) * | 2008-09-18 | 2009-07-01 | 苏州百胜动力机器有限公司 | Rubber valve oil fuel pump of engine |
| CN201892019U (en) * | 2010-11-25 | 2011-07-06 | 湖南机油泵股份有限公司 | Internal discharge type safety valve rotor oil pump |
| CN203175727U (en) * | 2013-04-23 | 2013-09-04 | 成都恒高机械电子有限公司 | Fuel pump with safety valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103206325A (en) | 2013-07-17 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20151111 |