CN211819892U - Straight-through pressure regulator for fuel pump - Google Patents
Straight-through pressure regulator for fuel pump Download PDFInfo
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- CN211819892U CN211819892U CN202020046529.8U CN202020046529U CN211819892U CN 211819892 U CN211819892 U CN 211819892U CN 202020046529 U CN202020046529 U CN 202020046529U CN 211819892 U CN211819892 U CN 211819892U
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- core component
- positioning seat
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Abstract
The utility model relates to a direct formula pressure regulator of fuel pump, including the play oil pipe that the one end inner wall interference fit that is the shell of cylinder, a tip and shell is connected, the one end that should go out oil pipe is equipped with seal port, characterized by: a valve core component is arranged in the shell, and one end of the valve core component is correspondingly matched with the sealing port of the oil outlet pipe; a positioning seat is arranged in the shell, and one end of the positioning seat is in clearance fit with the other end of the valve core component; a compression spring is arranged in the shell, and one end of the compression spring is in interference fit with the other end of the positioning seat; the end cover is in a truncated cone step shape and is arranged in the shell, the small end of the end cover is in interference fit with the other end of the compression spring, and the large end of the end cover is in interference fit with the inner wall of the other end of the shell; the central part of the end cover is provided with an oil discharge hole. The utility model has high compression strength, good oil resistance and corrosion resistance, wide application range of fuel oil and environment temperature, can be suitable for high-pressure systems, can avoid fuel oil leakage in the fuel oil pressure adjusting process and eliminate high and low frequency noise; compact structure and small required installation space.
Description
Technical Field
The utility model relates to an automobile fuel pump, concretely relates to direct formula pressure regulator of fuel pump.
Background
Conventional electric fuel pumps typically employ a diaphragm fuel pressure regulator. "a pressure regulator for automobile fuel supply system" as disclosed in CN 205936903U, the inside top of casing is equipped with pressure regulation room, the pressure regulation room below is equipped with fuel chamber, casing upper surface middle part is equipped with adjusting screw, the adjusting screw lower extreme is connected with the connecting block, the lower surface of connecting block is connected with pressure regulating spring, the pressure regulating spring lower extreme is connected with the spring holder, the both sides joint of spring holder has the valve body seat, be equipped with the diaphragm between spring holder and the valve body seat, diaphragm one end is connected with sealed piece, the little spring lower extreme is connected with the valve body, the casing lower surface is equipped with out oil pipe, casing lower surface both sides are equipped with into oil pipe, the inside filter screen that is equipped with of fuel chamber, pressure regulation. It can reduce the influence of air on pressure, improve the quality of oil and avoid blockage. The pressure regulator with the structure has high cost, complex process and large installation space, and the diaphragm of the pressure regulator adopts nitrile rubber, is not resistant to the corrosion of methanol, ethanol and gasoline, has poor anti-explosion capability and is not suitable for a high-pressure system. With the popularization of the emission regulation of six \ four countries of motorcycles of automobiles, the requirements of increasingly complex high-integration fuel pumps and ultrahigh-pressure fuel systems cannot be met. Accordingly, there is a need for an improved pressure regulator for a conventional electric fuel pump.
Disclosure of Invention
The utility model aims at providing a fuel pump straight-through pressure regulator, its compression strength is high, can be applicable to high-pressure system, oil resistance and corrosion resistance are good, fuel and ambient temperature application scope are wide, can avoid appearing the fuel leakage in the fuel pressure adjustment process, eliminate the noise of high frequency and low frequency; compact structure, small volume and small required installation space.
A direct formula pressure regulator of fuel pump, including shell, a tip that is the cylinder with the one end inner wall interference fit of shell connects goes out oil pipe, the one end that should go out oil pipe is equipped with seal port, characterized by:
a valve core component is arranged in the shell, and one end of the valve core component is correspondingly matched with the sealing port of the oil outlet pipe;
a positioning seat is arranged in the shell, and one end of the positioning seat is in clearance fit with the other end of the valve core component;
a compression spring is arranged in the shell, and one end of the compression spring is in interference fit with the other end of the positioning seat;
the end cover is in a truncated cone step shape and is arranged in the shell, the small end of the end cover is in interference fit with the other end of the compression spring, and the large end of the end cover is in interference fit with the inner wall of the other end of the shell; an oil discharge hole is formed in the center of the end cover.
Furthermore, the valve core component is composed of a valve core body and a flow guide bulge fixedly connected to one end of the valve core body and is of an eccentric structure; the distance between the axial lead of the flow guide bulge and the axial lead of the valve core body is 0.5 mm; the flow guide bulge is correspondingly matched with the sealing opening of the oil outlet pipe.
Furthermore, the material of the flow guide bulge is fluororubber.
Furthermore, a plurality of diversion trenches are equidistantly arranged on the circumference of one end of the positioning seat.
Furthermore, a sealing ring is arranged at the contact part of the oil outlet pipe and one end of the shell.
Furthermore, the valve core component, the positioning seat and the compression spring are in clearance fit with the inner wall of the shell and can axially move when being pushed by fuel pressure.
Furthermore, the valve core component consists of a valve core body and a flow guide bulge fixedly connected to one end of the valve core body, and the axial lead of the flow guide bulge is superposed with the axial lead of the valve core body; the flow guide bulge is correspondingly matched with the sealing opening of the oil outlet pipe.
The utility model has the advantages that:
the valve core component and the positioning seat are assembled, so that the valve core component is suitable for valve core components of different models; because no rubber diaphragm is arranged, the pressure intensity is high, the pressure-bearing composite material can be suitable for various pressure systems, and the application range of the environmental temperature is wide; because the flow guide bulge at the front end of the valve core body is of an eccentric structure, the flow guide effect is good, the pressure fluctuation can be inhibited, the fuel leakage in the fuel pressure adjusting process is avoided, and the high-frequency and low-frequency noises are eliminated; because the sealing component is made of fluororubber, the sealing component has good elasticity and resists the corrosion of methanol and ethanol gasoline; the structure is simple, the assembly is simple, and the cost is low; because the structure is compact, the valve body is small in size, the required installation space is small, and the valve can be suitable for various installation positions. The structure is simple, the number of parts is small, the assembly is simple, and the cost is low.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is an exploded view of the present invention;
FIG. 3 is a schematic structural view of a poppet member;
FIG. 4 is a left side view of FIG. 3;
fig. 5 is a schematic structural diagram of the positioning seat.
In the figure:
1-a housing;
2-oil outlet pipe, 20-sealing port;
3, sealing rings;
4-valve core component, 40-valve core body, 41-flow guide projection;
5-positioning seat, 50-guiding gutter;
6, compressing the spring;
7-end cover, 70-oil drain hole.
Detailed Description
The invention is further described with reference to the following figures and examples.
The first embodiment is as follows: referring to fig. 1 and 2, a straight-through pressure regulator for a fuel pump includes a cylindrical housing 1, and an oil outlet pipe 2 having an end portion connected to an inner wall of one end of the housing in an interference fit manner, wherein one end of the oil outlet pipe is provided with a sealing port 20, and the straight-through pressure regulator is characterized in that:
a valve core component 4 is arranged in the shell 1, and one end of the valve core component is correspondingly matched with the sealing port 20 of the oil outlet pipe 2;
a positioning seat 5 is arranged in the shell 1, and one end of the positioning seat is in clearance fit with the other end of the valve core component 4;
a compression spring 6 is arranged in the shell 1, and one end of the compression spring is in interference fit with the other end of the positioning seat 5;
an end cover 7 is in a truncated cone step shape and is arranged in the shell 1, the small end of the end cover is in interference fit with the other end of the compression spring 6, and the large end of the end cover is in interference fit with the inner wall of the other end of the shell 1; the central part of the end cover 7 is provided with an oil drain hole 70.
The valve core component 4 is composed of a valve core body 40 and a flow guide bulge 41 fixedly connected to one end of the valve core body, and is of an eccentric structure; the distance between the axis of the flow guide bulge 41 and the axis of the valve core body 40 is 0.5 mm; the flow guide bulge 41 is correspondingly matched with the sealing opening 20 of the oil outlet pipe 2. The valve core component with the eccentric structure can rotate when fuel flows out, so that the flow guide effect is good, and pressure fluctuation can be inhibited; and fuel leakage in the fuel pressure adjusting process can be avoided, and high-frequency and low-frequency noise is reduced.
The material of the flow guide protrusion 41 is fluororubber. The fluororubber is resistant to the corrosion of methanol and ethanol gasoline, and has good elasticity and good sealing effect.
A plurality of flow guide grooves 50 are equidistantly arranged on the circumference of one end of the positioning seat 5.
And a sealing ring 3 is arranged at the contact part of the oil outlet pipe 2 and one end of the shell 1. So that the oil outlet pipe and the related valve seat can be assembled to realize sealing and prevent fuel oil leakage.
The valve core component 4, the positioning seat 5 and the compression spring 6 are in clearance fit with the inner wall of the shell 1 and can axially move when being pushed by fuel pressure.
Example two: the valve core component 4 consists of a valve core body 40 and a flow guide bulge 41 fixedly connected to one end of the valve core body, and the axial lead of the flow guide bulge 41 is superposed with the axial lead of the valve core body 40, namely the valve core component is not in an eccentric structure; the flow guide bulge 41 is correspondingly matched with the sealing opening 20 of the oil outlet pipe 2. The rest of the structure is the same as the first embodiment.
The utility model controls the pressure of fuel oil through the compression spring, the fuel oil enters from the oil outlet pipe, when the pressure of the fuel oil is higher than a preset standard value, the high-pressure fuel oil can jack the valve core component and the positioning seat, so that the valve core component and the oil outlet pipe are separated, and the redundant fuel oil directly flows back to the fuel pump oil storage box through the diversion groove on the positioning seat, the gap between the compression springs and the oil discharge hole of the rear cover; when the fuel pressure is lower than a preset standard value, the valve core component and the oil outlet pipe are closed under the action of the pretightening force of the compression spring, oil return is stopped, and the system pressure is kept.
Claims (7)
1. A straight-through pressure regulator for a fuel pump comprises a cylindrical shell (1), an oil outlet pipe (2) with one end part connected with the inner wall of one end of the shell in an interference fit manner, a sealing opening (20) is arranged at one end of the oil outlet pipe,
the method is characterized in that:
a valve core component (4) is arranged in the shell (1), and one end of the valve core component is correspondingly matched with the sealing port (20) of the oil outlet pipe (2);
a positioning seat (5) is arranged in the shell (1), and one end of the positioning seat is in clearance fit with the other end of the valve core component (4);
a compression spring (6) is arranged in the shell (1), and one end of the compression spring is in interference fit with the other end of the positioning seat (5);
an end cover (7) is in a truncated cone step shape and is arranged in the shell (1), the small end of the end cover is in interference fit with the other end of the compression spring (6), and the large end of the end cover is in interference fit with the inner wall of the other end of the shell (1); an oil discharge hole (70) is formed in the center of the end cover (7).
2. The fuel pump straight through pressure regulator of claim 1, wherein: the valve core component (4) is composed of a valve core body (40) and a flow guide bulge (41) fixedly connected to one end of the valve core body and has an eccentric structure; the distance between the axis of the flow guide bulge (41) and the axis of the valve core body (40) is 0.5 mm; the flow guide bulge (41) is correspondingly matched with the sealing opening (20) of the oil outlet pipe (2).
3. The fuel pump straight through pressure regulator of claim 2, wherein: the diversion protrusion (41) is made of fluororubber.
4. The fuel pump straight through pressure regulator of claim 1 or 2, wherein: a plurality of flow guide grooves (50) are equidistantly arranged on the circumference of one end of the positioning seat (5).
5. The fuel pump straight through pressure regulator of claim 1 or 2, wherein: and a sealing ring (3) is arranged at the contact part of the oil outlet pipe (2) and one end of the shell (1).
6. The fuel pump straight through pressure regulator of claim 1 or 2, wherein: the valve core component (4), the positioning seat (5) and the compression spring (6) are in clearance fit with the inner wall of the shell (1) and can axially move when being pushed by fuel pressure.
7. The fuel pump straight through pressure regulator of claim 1, wherein: the valve core component (4) consists of a valve core body (40) and a flow guide bulge (41) fixedly connected to one end of the valve core body, and the axial lead of the flow guide bulge (41) is superposed with the axial lead of the valve core body (40); the flow guide bulge (41) is correspondingly matched with the sealing opening (20) of the oil outlet pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020046529.8U CN211819892U (en) | 2020-01-10 | 2020-01-10 | Straight-through pressure regulator for fuel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020046529.8U CN211819892U (en) | 2020-01-10 | 2020-01-10 | Straight-through pressure regulator for fuel pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211819892U true CN211819892U (en) | 2020-10-30 |
Family
ID=73049695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020046529.8U Active CN211819892U (en) | 2020-01-10 | 2020-01-10 | Straight-through pressure regulator for fuel pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211819892U (en) |
-
2020
- 2020-01-10 CN CN202020046529.8U patent/CN211819892U/en active Active
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