CN210370983U

CN210370983U - Filtering structure of fuel oil system

Info

Publication number: CN210370983U
Application number: CN201921315079.1U
Authority: CN
Inventors: 徐海才; 凌利江
Original assignee: Hangzhou Xiaoshan Oriental Hydraulic Co ltd
Current assignee: Hangzhou Xiaoshan Oriental Hydraulic Co ltd
Priority date: 2019-08-14
Filing date: 2019-08-14
Publication date: 2020-04-21
Anticipated expiration: 2029-08-14

Abstract

The utility model relates to a fuel oil system's filtration, affiliated fuel pump technical field, including the fuel pump body, be equipped with on the fuel pump body terminal surface with the fixed changeover portion flange seat of fuel pump body looks sealed bolted connection, be equipped with in the fuel pump body and cup joint and extend the spline main shaft of changeover portion flange seat with changeover portion flange seat looks coaxial-type, fuel pump body one side end is equipped with the oil feed flange filtering component who feeds through with the integration of the fuel pump body looks, and another side of the fuel pump body is equipped with the filter valve subassembly that feeds through with the integration of the fuel pump body. The oil outlet valve component of the filter comprises a fine filter tank body, the upper end of the fine filter tank body is provided with a filter cover which is in sealed nested connection with the fine filter tank body, and a bypass valve which is in elastic displacement type nested with the filter cover is arranged in the fine filter tank body. The device has the characteristics of compact structure, effective impurity filtration, good operation stability and long service life. And the full combustion is realized, and the output power is improved.

Description

Filtering structure of fuel oil system

Technical Field

The utility model relates to a fuel pump technical field, concretely relates to fuel oil system's filtration.

Background

Fuel pumps are a term of art in the automotive industry. The fuel injection system is one of basic components of a fuel injection system of an electronic fuel injection automobile, is positioned in a fuel tank of the automobile, a fuel pump works during starting and running of an engine, and if the engine stops and an ignition switch is still in an ON state, a HFM-SFI control module turns off the power supply of the fuel pump so as to avoid accidental ignition.

The fuel pump is used for sucking fuel from the fuel tank, pressurizing the fuel and then delivering the fuel to the fuel supply pipe, and the fuel pump is matched with the fuel pressure regulator to establish certain fuel pressure. The fuel pump conveys high-pressure fuel to the fuel distribution pipe, and continuous fuel supply to the fuel injection nozzle is guaranteed.

Disclosure of Invention

The utility model discloses there exist among the main prior art of solution the fuel and have impurity, pump body iron fillings granule to engine wear and tear and the short not enough of life, provide a fuel oil system's filtration, it has compact structure, effective filtration impurity, operating stability good and long service life's characteristics. The problem of poor oil supply purity of the engine is solved. And the full combustion is realized, and the output power is improved.

The above technical problem of the present invention can be solved by the following technical solutions:

the utility model provides a fuel oil system's filtration, includes the fuel pump body, fuel pump body terminal surface on be equipped with the fixed changeover portion flange seat of fuel pump body looks sealed bolted connection, the fuel pump body in be equipped with changeover portion flange seat looks coaxial-type cup joint and extend the spline main shaft of changeover portion flange seat, fuel pump body one side end be equipped with the oil feed flange filtering component who feeds through with the integration of the fuel pump body looks, another side of the fuel pump body be equipped with the filter valve subassembly that produces oil that feeds through with the integration of the fuel pump body looks. The oil outlet valve assembly of the filter comprises a fine filter tank body communicated with a fuel pump body, the upper end of the fine filter tank body is provided with a filter cover in sealed nested connection with the fine filter tank body, and the fine filter tank body is internally provided with a bypass valve in elastic displacement type nesting with the filter cover.

The bypass valve is used for connecting the fuel pump body and the fine filter tank body and removing redundant impurities. The valve is installed on the bypass pipeline, but the type and the structure of the valve are not specified. The bypass valve is also called a self-operated bypass differential pressure valve, and the self-operated differential pressure control valve is a product which is replaced by an electric differential pressure control valve. The self-operated differential pressure control valve has the advantages that external power is not needed, the self-operated differential pressure control valve works by the pressure of the system, the operation safety factor is effectively improved, the self-operated differential pressure control valve is safer and more reliable than the traditional electric differential pressure control valve, the probability of unit damage caused by electricity reliance of the electric differential pressure control valve and circuit problems is solved, the self-operated differential pressure control valve is convenient to install, and the cost is saved.

Preferably, the oil inlet flange filtering component comprises an oil inlet flange seat integrally communicated with the fuel pump body, a spherical filtering net rack is arranged in the oil inlet flange seat, and a limiting compression ring elastically clamped and connected with the inner wall of the oil inlet flange seat in a ring-blocking type is arranged in the spherical filtering net rack.

Preferably, the fuel pump body comprises a pump housing, a driving gear shaft in spline type limiting nesting with the spline main shaft is arranged in the pump housing, and a driven gear shaft meshed with the driving gear shaft in a tooth form is arranged at the upper end of the driving gear shaft.

Preferably, both ends of the driving gear shaft are provided with thrust bearings which are embedded with the driving gear shaft, both ends of the driven gear shaft are provided with thrust bearings which are embedded with the driven gear shaft, and the thrust bearings on the driving gear shaft and the thrust bearings on the driven gear shaft are pressed and attached in a planar mode.

Preferably, a pump end cover connected with the pump shell through a flange type bolt is arranged between the pump shell and the transition section flange seat.

Preferably, the upper end of the bypass valve is provided with a spring which is sleeved with the filter cover, and the upper end of the filter cover is provided with a release valve which is communicated with the filter cover and extends into the spring. The air release valve is also called as an air release valve, and a valve for air release commonly used in water heating installation is generally installed at the highest point of the system and is commonly found on a heating radiator and a water separator. When the pipeline runs normally, a small amount of gas can be naturally generated, the gas can be gathered at the upper part in the pipeline to a certain extent, the liquid level in the valve is reduced, and the spring discharges the gas from the small hole along with the liquid level reduction.

Preferably, the end face of the transition section flange seat is provided with a plurality of compression gasket strips which are distributed annularly and are fixedly connected with the transition section flange seat through two bolts. When the spline spindle is connected with a motor or a motor to rotate, the end face of the transition section flange seat is in limiting and fastening connection through the pressing gasket strips. The spline main shaft is prevented from sliding to cause deformation due to overlarge flange connection clearance. The stability of spline main shaft swivelling joint is improved.

The utility model discloses can reach following effect:

the utility model provides a fuel oil system's filtration compares with prior art, has compact structure, effective filtration impurity, operating stability good and long service life's characteristics. The problem of poor oil supply purity of the engine is solved. And the full combustion is realized, and the output power is improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a structural sectional view of a fuel pump body according to the present invention.

Fig. 3 is the utility model provides an oil feed flange filtering component's structure cross-sectional view.

Fig. 4 is a structural sectional view of the filter outlet valve assembly of the present invention.

In the figure: the fuel pump body 1, the oil inlet flange filter assembly 2, the filter delivery valve assembly 3, the transition section flange seat 4, the pressing gasket strip 5, the spline spindle 6, the pump end cover 7, the pump shell 8, the driven gear shaft 9, the thrust bearing 10, the driving gear shaft 11, the oil inlet flange seat 12, the spherical surface filter net rack 13, the limiting compression ring 14, the air release valve 15, the filter cover 16, the spring 17, the bypass valve 18 and the fine filter tank body 19.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b): as shown in fig. 1-4, a filter structure of a fuel system comprises a fuel pump body 1, the fuel pump body 1 comprises a pump housing 8, and a pump end cover 7 connected with the pump housing 8 through a flange bolt is arranged between the pump housing 8 and a transition section flange seat 4. A driving gear shaft 11 in spline type limiting nesting with the spline main shaft 6 is arranged in the pump shell 8, and a driven gear shaft 9 meshed with the driving gear shaft 11 in a tooth form is arranged at the upper end of the driving gear shaft 11. Thrust bearings 10 nested with the driving gear shaft 11 are arranged at two ends of the driving gear shaft 11, thrust bearings 10 nested with the driven gear shaft 9 are arranged at two ends of the driven gear shaft 9, and the thrust bearings 10 on the driving gear shaft 11 and the thrust bearings 10 on the driven gear shaft 9 are in plane type pressing fit. The end face of the fuel pump body 1 is provided with a transition section flange seat 4 fixedly connected with the fuel pump body 1 in a sealing mode through bolts, and the end face of the transition section flange seat 4 is provided with 4 pressing gasket strips 5 which are distributed annularly and fixedly connected with the transition section flange seat 4 through two bolts. The fuel pump body 1 is internally provided with a spline main shaft 6 which is sleeved with the transition section flange seat 4 in the same shaft type and extends out of the transition section flange seat 4, one side end of the fuel pump body 1 is provided with an oil inlet flange filtering component 2 integrally communicated with the fuel pump body 1, the oil inlet flange filtering component 2 comprises an oil inlet flange seat 12 integrally communicated with the fuel pump body 1, a spherical filtering net rack 13 is arranged in the oil inlet flange seat 12, and a limiting pressure ring 14 elastically blocked in a ring type limiting nested manner with the inner wall of the oil inlet flange seat 12 is arranged in the spherical filtering net rack 13. The other side end of the fuel pump body 1 is provided with a filter oil outlet valve component 3 integrally communicated with the fuel pump body 1. The oil outlet valve component 3 of the filter comprises a fine filter tank body 19 communicated with the fuel pump body 1, the upper end of the fine filter tank body 19 is provided with a filter cover 16 which is in sealed nested connection with the fine filter tank body 19, and a bypass valve 18 which is in elastic displacement type nested connection with the filter cover 16 is arranged in the fine filter tank body 19. The upper end of the bypass valve 18 is provided with a spring 17 which is sleeved with the filter cover 16, and the upper end of the filter cover 16 is provided with a release valve 15 which is communicated with the filter cover 16 and extends into the spring 17.

In conclusion, the filtering structure of the fuel system has the characteristics of compact structure, effective impurity filtering, good operation stability and long service life. The problem of poor oil supply purity of the engine is solved. And the full combustion is realized, and the output power is improved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without deviating from the basic characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

In conclusion, the above description is only the specific embodiment of the present invention, but the structural features of the present invention are not limited thereto, and any person skilled in the art can make changes or modifications within the scope of the present invention.

Claims

1. A fuel system's filtration, its characterized in that: the oil-saving fuel pump comprises a fuel pump body (1), wherein a transition section flange seat (4) fixedly connected with the fuel pump body (1) through a sealing bolt is arranged on the end face of the fuel pump body (1), a spline main shaft (6) which is in shaft type sleeve joint with the transition section flange seat (4) and extends out of the transition section flange seat (4) is arranged in the fuel pump body (1), an oil inlet flange filtering component (2) integrally communicated with the fuel pump body (1) is arranged at one side end of the fuel pump body (1), and a filter oil outlet valve component (3) integrally communicated with the fuel pump body (1) is arranged at the other side end of the fuel pump body (1); the filter oil outlet valve assembly (3) comprises a fine filter tank body (19) communicated with the fuel pump body (1), the upper end of the fine filter tank body (19) is provided with a filter cover (16) in sealed nested connection with the fine filter tank body (19), and a bypass valve (18) in elastic displacement type nested with the filter cover (16) is arranged in the fine filter tank body (19).

2. A filter structure of a fuel system as recited in claim 1, wherein: the oil feed flange filter assembly (2) include and be the oil feed flange seat (12) that the integration is linked together with the fuel pump body (1), oil feed flange seat (12) in be equipped with sphere filter net rack (13), sphere filter net rack (13) in be equipped with spacing clamping ring (14) of the spacing nested joint of oil feed flange seat (12) inner wall looks elasticity retaining ring formula.

3. A filter structure of a fuel system as recited in claim 1, wherein: the fuel pump body (1) include pump casing (8), pump casing (8) in be equipped with spacing nested driving gear axle (11) of spline main shaft (6) looks spline, driving gear axle (11) upper end be equipped with driving gear axle (11) looks tooth form meshing's driven gear axle (9).

4. A filter structure of a fuel system as recited in claim 3, wherein: the drive gear shaft (11) both ends all be equipped with drive gear shaft (11) nested footstep bearing (10) mutually, driven gear shaft (9) both ends all be equipped with driven gear shaft (9) nested footstep bearing (10) mutually, the footstep bearing (10) on drive gear shaft (11) and footstep bearing (10) on driven gear shaft (9) plane type compress tightly the laminating mutually.

5. A filter structure of a fuel system as recited in claim 3, wherein: and a pump end cover (7) which is connected with the pump shell (8) through a flange type bolt is arranged between the pump shell (8) and the transition section flange seat (4).

6. A filter structure of a fuel system as recited in claim 1, wherein: the upper end of the bypass valve (18) is provided with a spring (17) which is sleeved with the filter cover (16), and the upper end of the filter cover (16) is provided with a release valve (15) which is communicated with the filter cover (16) and extends into the spring (17).

7. A filter structure of a fuel system as recited in claim 1, wherein: the end face of the transition section flange seat (4) is provided with a plurality of pressing gasket strips (5) which are distributed annularly and are fixedly connected with the transition section flange seat (4) through two bolts.