CN215890271U - Fuel oil supply structure of fuel pump - Google Patents
Fuel oil supply structure of fuel pump Download PDFInfo
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- CN215890271U CN215890271U CN202122377063.7U CN202122377063U CN215890271U CN 215890271 U CN215890271 U CN 215890271U CN 202122377063 U CN202122377063 U CN 202122377063U CN 215890271 U CN215890271 U CN 215890271U
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- oil
- siphon
- fuel
- outlet channel
- bellytank
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Abstract
The utility model discloses a fuel oil supply structure of a fuel oil pump, which comprises an auxiliary oil tank, wherein an oil inlet channel is arranged on the side wall of the auxiliary oil tank, an oil path separated from the outlet end of a pump core is connected with the inlet end of the oil inlet channel through an oil pipe, the side wall of the auxiliary oil tank is also provided with an installation groove communicated with the oil inlet channel, the installation groove is provided with a pressure relief valve, a transverse oil outlet channel is arranged at the position of the auxiliary oil tank close to the bottom, the oil outlet channel is communicated with the inner cavity of the auxiliary oil tank, the left side of the oil outlet channel is provided with an oil spraying cavity communicated with the oil inlet channel, the oil spraying cavity is provided with a spraying hole facing the oil outlet channel, the bottom surface of the auxiliary oil tank is provided with a siphon groove corresponding to the oil spraying cavity, the siphon groove is communicated with the oil tank through a bellows, the bottom surface of the siphon groove is provided with a siphon tube entering the oil outlet channel, the siphon tube is close to the spraying hole, and the end surface of the siphon tube is aligned with the central axis of the spraying hole. The structure is reliable and stable and has ingenious design, thereby saving the manufacturing cost.
Description
Technical Field
The utility model relates to a structure on a fuel pump, in particular to a fuel oil supply structure of the fuel pump.
Background
The fuel pump is used for feeding a fuel pump in a fuel tank into an engine, for the purpose of convenient maintenance, some fuel pumps are arranged in the fuel tank and close to the top end of the fuel tank, end covers of the fuel pumps are exposed out of the fuel tank, other parts such as a pump core and an auxiliary fuel tank are arranged in the fuel tank, the fuel pumps generally have the auxiliary fuel tank, the auxiliary fuel tank is communicated with the fuel tank through a pipeline, if another fuel pump is adopted for pumping, the great cost and space waste can be generated, and the structure is more complex.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, an object of the present invention is to provide a fuel supply structure of a fuel pump having a reliable and stable structure, thereby saving manufacturing costs.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a fuel oil feeding structure of fuel pump, includes the bellytank, is provided with the oil feed passageway on this bellytank's the lateral wall, and the oil circuit that the pump core exit end was separated passes through oil pipe with the entrance point of this oil feed passageway and is connected still seted up on the lateral wall of bellytank with the communicating mounting groove of oil feed passageway dispose the relief valve on the mounting groove the bellytank is close to the position of bottom and is equipped with horizontal oil production passageway, oil production passageway with the inner chamber of bellytank communicates with each other, the left side of oil production passageway be equipped with the communicating oil spout chamber of oil feed passageway, this oil spout chamber is equipped with the orifice towards oil production passageway be equipped with on the bellytank bottom with the siphon groove that the oil spout chamber is corresponding, siphon groove passes through bellows and oil tank intercommunication, be equipped with on the siphon inslot bottom surface get into the siphon in the oil production passageway, the siphon with the orifice is close to each other, the end face of the siphon is aligned with the central axis of the spray hole.
The pressure relief valve comprises a valve cover buckled on the peripheral wall of the mounting groove, a T-shaped block capable of moving axially is inserted into the valve cover, a spring is arranged between the T-shaped block and the inner wall of the valve cover, an annular step is arranged in the mounting groove, a valve block is arranged corresponding to the step, and the valve block is connected to the end face of the T-shaped block.
The inner diameter of the spray hole is 1.2 mm.
According to the structure, oil liquid pumped by the pump core from the oil tank enters the oil inlet channel after being separated, then enters the oil injection cavity and is injected into the oil inlet and outlet channel through the spray holes, at the moment, the injected fuel passes through the siphon pipe and then generates siphon effect on the inner cavity of the siphon pipe, so that the siphon groove generates siphon, the siphon groove siphons the fuel in the oil tank into the oil outlet channel, the fuel can generate larger oil pressure after entering the oil injection cavity, at the moment, the pressure relief valve can release the pressure to keep certain pressure, the phenomenon that the normal work of the pump core is influenced by the backflow of the fuel due to overlarge pressure is avoided, and the structure is reliable, stable and ingenious in design, and the manufacturing cost is saved.
The utility model is further described with reference to the following figures and detailed description.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The present invention will now be described specifically by way of examples.
As shown in fig. 1, the embodiment discloses a fuel oil supply structure of a fuel oil pump, which includes an auxiliary fuel tank 1, an oil inlet channel 2 is installed on the side wall of the auxiliary fuel tank 1, an oil path separated from the outlet end of a pump core is connected with the inlet end of the oil inlet channel 2 through an oil pipe, an installation groove 3 communicated with the oil inlet channel 2 is further formed on the side wall of the auxiliary fuel tank 1, a pressure relief valve 4 is configured on the installation groove 3, a horizontal oil outlet channel 5 is arranged at a position close to the bottom of the auxiliary fuel tank 1, the oil outlet channel 5 is communicated with the inner cavity of the auxiliary fuel tank 1, an oil injection cavity 6 communicated with the oil inlet channel 2 is arranged at the left side of the oil outlet channel 5, the oil injection cavity 6 is provided with a spray orifice 61 facing the oil outlet channel 5, the inner diameter of the spray orifice 61 is 1.2mm, so that the injection effect is better, a siphon groove 7 corresponding to the oil injection cavity 6 is arranged on the bottom surface of the auxiliary fuel tank 1, the siphon groove 7 is communicated with the fuel oil tank through a corrugated pipe, the inner bottom surface of the siphon groove 7 is provided with a siphon 8 entering the oil outlet channel 5, the siphon 8 is close to the spray holes 61, and the end surface of the siphon 8 is aligned with the central axis of the spray holes 61.
The relief valve 4 comprises a valve cover 41 buckled on the outer peripheral wall of the mounting groove 3, a T-shaped block 42 capable of moving axially is inserted on the valve cover 41, a spring 43 is arranged between the T-shaped block 42 and the inner wall of the valve cover 41, an annular step 44 is arranged in the mounting groove 3, a valve sheet 45 is arranged corresponding to the step 44, and the valve sheet 45 is connected to the end face of the T-shaped block 42. When the pressure of the fuel exceeds the required rated pressure, the pressure of the fuel overcomes the elastic force of the spring to drive the valve sheet 45 on the T-shaped block 42 to leave the step 44, so that the channel of the mounting groove 3 is opened, the pressure relief purpose is achieved, and the phenomenon that the normal work of the pump core is influenced due to the fact that the fuel flows back due to overlarge pressure is avoided.
Of course, the oil inlet channel 2, the oil outlet channel 5, the oil injection cavity 6 and the siphon groove 7 can be arranged on one seat body and connected with the auxiliary oil tank 1, so that the seat body can be arranged on auxiliary oil tanks with different specifications, and the auxiliary oil tanks are more convenient and reliable to produce.
Adopt above-mentioned technical scheme, make the pump core get into in the oil feed passageway 2 after the fluid separation that the oil tank pump came out, then get into and spout in the oil pocket 6, and spray in and out oil passageway 5 through orifice 61, the fuel that sprays this moment produces the siphon effect to the inner chamber of siphon 8 behind siphon 8, and then make siphon groove 7 produce the siphon, just so make siphon groove 7 with the fuel siphon in the oil tank advance to go out in the oil passageway 5, and the fuel gets into and can produce great oil pressure behind the oil spout 6 in the oil pocket, accessible relief valve 4 pressure release makes it keep certain pressure this moment, avoid the too big normal work that leads to the fuel backward flow to influence the pump core that leads to of pressure, the reliable and stable structure and design benefit, thereby practice thrift manufacturing cost.
Claims (3)
1. The utility model provides a fuel oil feeding structure of fuel pump, includes the bellytank, is provided with the oil feed passageway on this bellytank's the lateral wall, and the oil circuit that the pump core exit end was separated passes through tubing connection, its characterized in that with the entrance point of this oil feed passageway: still seted up on the lateral wall of bellytank with the communicating mounting groove of oil feed passageway dispose the relief valve on the mounting groove the bellytank is close to the position of bottom and is equipped with horizontal oil outlet channel, oil outlet channel with the inner chamber of bellytank communicates with each other, oil outlet channel's left side be equipped with the communicating oil spout chamber of oil feed passageway, this oil spout chamber is equipped with the orifice towards oil outlet channel be equipped with on the bellytank bottom surface with the corresponding siphon groove in oil spout chamber, siphon groove pass through bellows and oil tank intercommunication, be equipped with on the bottom surface in the siphon groove and get into siphon in the oil outlet channel, the siphon with the orifice is close to mutually, the terminal surface of this siphon with the axis of orifice is aligned.
2. The fuel supply structure of a fuel pump according to claim 1, wherein: the pressure relief valve comprises a valve cover buckled on the peripheral wall of the mounting groove, a T-shaped block capable of moving axially is inserted into the valve cover, a spring is arranged between the T-shaped block and the inner wall of the valve cover, an annular step is arranged in the mounting groove, a valve block is arranged corresponding to the step, and the valve block is connected to the end face of the T-shaped block.
3. The fuel supply structure of a fuel pump according to claim 1, wherein: the inner diameter of the spray hole is 1.2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122377063.7U CN215890271U (en) | 2021-09-29 | 2021-09-29 | Fuel oil supply structure of fuel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122377063.7U CN215890271U (en) | 2021-09-29 | 2021-09-29 | Fuel oil supply structure of fuel pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215890271U true CN215890271U (en) | 2022-02-22 |
Family
ID=80347910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122377063.7U Active CN215890271U (en) | 2021-09-29 | 2021-09-29 | Fuel oil supply structure of fuel pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215890271U (en) |
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2021
- 2021-09-29 CN CN202122377063.7U patent/CN215890271U/en active Active
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