CN104389708B

CN104389708B - Fuel oil filtering device

Info

Publication number: CN104389708B
Application number: CN201410615723.2A
Authority: CN
Inventors: 张晓渝
Original assignee: Lifan Industry Group Co Ltd
Current assignee: Lifan Technology Group Co Ltd
Priority date: 2014-11-06
Filing date: 2014-11-06
Publication date: 2020-02-07
Anticipated expiration: 2034-11-06
Also published as: CN104389708A

Abstract

The invention discloses a fuel oil filtering device which comprises a fuel oil filter, an engine oil supply pipe, an oil tank oil return pipe and a fixing support for fixing the fuel oil filter on a frame, wherein the engine oil supply pipe comprises an oil tank oil return pipe interface and a fuel oil filter fuel oil interface, the fuel oil filter comprises an oil outlet pipe, the oil tank oil return pipe interface and the fuel oil filter fuel oil interface are respectively provided with a quick-change connector, the oil tank oil return pipe is communicated with the oil tank oil return pipe interface through the quick-change connectors, and the oil outlet pipe is communicated with the fuel oil filter fuel oil interface through the quick-change connectors. The quick-change connector has a simple structure, the oil return pipe and the oil outlet pipe of the oil tank are more firmly connected through the quick-change connector, the installation and the disassembly are more convenient, and fuel oil leakage caused by looseness of a pipeline connector due to vibration is avoided; in addition, the fuel filter adopts a multi-stage filtering mode to filter different impurities in the fuel, so that the probability that the filter is blocked by the impurities is reduced, and the fuel can smoothly flow into a fuel system.

Description

Fuel oil filtering device

Technical Field

The invention relates to a fuel oil filtering device for a motor vehicle, in particular to a fuel oil filtering device.

Background

A fuel filter is mainly used to filter out impurities from fuel and prevent them from entering into carburetor. At present, most engines are provided with disposable paper filter element fuel filters which are easily blocked by impurities in fuel oil, so that the service life is shortened; in addition, after the paper filter element is blocked, the fuel flowing out of the outlet end of the filter is reduced, so that the fuel can not smoothly flow into a fuel system.

In a traditional fuel supply system, a fuel pressure regulator regulates the fuel pressure in an engine fuel supply pipe according to the change of gas pressure in an air inlet pipe, so that the constant fuel pressure difference is ensured, but the fuel pressure in the engine fuel supply pipe is not constant, and redundant fuel needs to flow back to a fuel tank from a fuel tank return pipe. The common method is that the contact surface of the oil return pipe of the oil tank and the oil outlet pipe of the filter is coated with viscose glue, and the oil return pipe of the oil tank and the oil outlet pipe of the filter are connected together in a sleeving manner of interference fit. However, when the motor vehicle is used for a long time, particularly when the motor vehicle is frequently driven on bumpy roads, the fuel filter device is continuously vibrated, and the joint of the oil return pipe of the oil tank and the oil outlet pipe of the filter is easy to loosen, so that fuel leakage is caused.

Disclosure of Invention

Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide a fuel tank and return oil pipe and be connected more firm with the play oil pipe of filter, avoid a fuel filter that the fuel was revealed.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a fuel oil filter, includes that fuel filter, engine supply oil pipe, oil tank return oil pipe and be used for will firing the fixed bolster of oil filter fixing on the frame, the engine supplies oil pipe to include oil tank return oil pipe interface and fires oil filter fuel interface, it includes out oil pipe to fire oil filter, oil tank return oil pipe interface with fire oil filter fuel interface and be equipped with quick change coupler respectively, oil tank return oil pipe passes through quick change coupler and oil tank return oil pipe interface intercommunication, it passes through quick change coupler and fires oil filter fuel interface intercommunication to go out oil pipe.

In the invention, the oil tank oil return pipe interface and the fuel filter fuel oil interface are respectively communicated with the oil tank oil return pipe and the oil outlet pipe by adopting the quick change connectors, the connection mode has the advantage of firm fixation, the safe, efficient and leakage-free quick switching between pipelines is realized, the installation is convenient, and the maintenance and the removal are also convenient.

Preferably, the fuel filter further comprises a housing, an oil inlet and an oil outlet are respectively arranged at two ends of the housing, a mesh-shaped filter device and a filter paper filter device for filtering fuel impurities are sequentially arranged in the housing from the oil inlet to the oil outlet, the mesh-shaped filter device and the filter paper filter device are respectively detachably connected with the housing, and the filter grade of the filter paper filter device is higher than that of the mesh-shaped filter device. The fuel enters the shell, firstly passes through the net-shaped filter device to filter impurities with larger diameters, then passes through the filter paper filter device to filter impurities with smaller diameters, and finally flows out of the shell and enters a fuel system below. The mode of graded filtration is adopted, and different filtration grades respectively filter impurities of different diameters, so that the filtering effect is enhanced, the service life is prolonged, and the probability that the filter is blocked by the impurities is reduced.

Preferably, the shell comprises an upper shell, a central connector and a lower shell, and two ends of the central connector are respectively in threaded connection with the upper shell and the lower shell. Each part of threaded connection is adopted, so that the filter device in the shell is convenient to replace independently, the cost is reduced, and resources are reasonably utilized.

As an optimization, the mesh-shaped filtering device comprises a filtering cylinder and a filtering net which are sequentially arranged from an oil inlet to an oil outlet, the filtering paper filtering device comprises filtering paper, the inlet end of the filtering cylinder is in threaded connection with the oil inlet, the filtering net is detachably connected with the shell, the filtering paper is detachably connected with the shell, and the filtering grades of the filtering paper, the filtering net and the filtering cylinder are gradually reduced. The filter cartridge is bigger for filtering the net, and effective filter area can filter the great impurity particle of diameter, then the fuel filters in proper order through filtering net and filter paper again, has further reduced the probability that the filter is blockked up by impurity, has improved the life of filter.

Preferably, the filtering aperture of the filtering paper is 80-120 mu m, the mesh number of the filtering net is 60-80 meshes, and the mesh number of the filtering cylinder is 30-50 meshes.

Preferably, the end faces of the two ends of the central connector, which are close to the inner ring, extend outwards along the axial direction to form annular flanges, gaps are respectively arranged between the outer side of each annular flange and the inner side of the upper shell and between the outer side of each annular flange and the inner side of the lower shell, the filter net and the filter paper are respectively located at the annular flanges at the two ends of the central connector, and annular sealing pressing pieces used for fixing the filter net and the filter paper on the annular flanges are respectively arranged in the gaps. The filter screen and the filter paper are fixed at two ends of the central connector respectively by the annular sealing pressing pieces to filter fuel oil in sequence, and meanwhile, the annular sealing pressing pieces further seal the connecting gaps among the upper shell, the central connector and the lower shell in the gaps to prevent the fuel oil from leaking.

In conclusion, the beneficial effects of the invention are as follows: the fuel oil filtering device is simple in structure, the quick-change connector enables the oil return pipe of the oil tank to be more firmly connected with the oil outlet pipe of the filter, meanwhile, the installation and the disassembly are more convenient, and fuel oil leakage caused by looseness of a pipeline connector due to vibration of a motor vehicle is avoided; in addition, the fuel filter adopts a multi-stage filtering mode to sequentially filter different impurities in the fuel, the filtering effect is better, the probability that the filter is blocked by the impurities is reduced, and the fuel can smoothly flow into a fuel system; in addition, the design of replaceable filter elements is adopted, so that the cost is reduced, and the resources are saved.

Drawings

For purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made in detail to the present invention as illustrated in the accompanying drawings, in which:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the fuel filter of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and fig. 2, a fuel filter device in this embodiment includes fuel filter, engine oil supply pipe 1, oil tank return pipe 2 and is used for fixing the fixed bolster 3 on the frame with fuel filter, engine oil supply pipe 1 includes oil tank return pipe interface 1a and fuel filter fuel interface 1b, fuel filter includes oil outlet pipe 4, oil tank return pipe interface 1a and fuel filter fuel interface 1b are equipped with quick-change coupler 5 respectively, oil tank return pipe 2 returns oil pipe interface 1a intercommunication through quick-change coupler 5 and oil tank, oil outlet pipe 4 communicates through quick-change coupler 5 and fuel filter fuel interface 1 b.

In this embodiment, the fuel filter still includes the casing, and the both ends of casing are equipped with oil inlet 6 and oil-out 7 respectively, be equipped with netted filter equipment and the filter paper filter equipment that is used for filtering fuel impurity in the casing from oil inlet 6 to oil-out 7 in proper order, netted filter equipment and filter paper filter equipment are connected with the casing is detachable respectively, filter paper filter equipment's filtration grade is higher than netted filter equipment's filtration grade. Netted filter equipment filters the fuel colating, and filter paper filter equipment filters the fuel essence, filters fuel for current adoption single filtration paper, and filterable efficiency is higher, and the effect is better.

In this embodiment, the housing includes an upper housing 8, a central connector 9 and a lower housing 10, and both ends of the central connector 9 are respectively screwed with the upper housing 8 and the lower housing 10.

In this specific embodiment, the mesh-shaped filtering device includes a filtering cylinder 11 and a filtering net 12 which are sequentially arranged from the oil inlet 6 to the oil outlet 7, the filtering paper filtering device includes filtering paper 13, the inlet end of the filtering cylinder 11 is in threaded connection with the oil inlet 6, the filtering net 12 is detachably connected with the housing, the filtering paper 13 is detachably connected with the housing, and the filtering grades of the filtering paper 13, the filtering net 12 and the filtering cylinder 11 are gradually reduced. When the fuel filter is used for the service life, the fuel filter is detached from the motor vehicle, then the filter is detached, the filter paper 13, the filter net 12 and the filter cylinder 11 are respectively replaced, and then the filter is assembled and installed on the motor vehicle again.

In the present embodiment, the filtering paper 13 has a filtering pore size of 80 to 120 μm, the filtering net 12 has a mesh size of 60 to 80 meshes, and the filtering cylinder 11 has a mesh size of 30 to 50 meshes. In the implementation process, the filtering pore diameter of the filtering paper 13 is 100 μm, the mesh number of the filtering net 12 is 70 meshes, and the mesh number of the filtering cylinder 11 is 40 meshes.

In this embodiment, the portions of the end surfaces of the two ends of the central connector 9 close to the inner ring extend outward along the axial direction to form annular flanges 14, gaps are respectively provided between the outer side of each annular flange 14 and the inner side of the upper casing 8 and between the outer side of each lower casing 10, the filter net 12 and the filter paper 13 are respectively located at the annular flanges 14 of the two ends of the central connector 9, and annular sealing pressing members 15 for fixing the filter net 12 and the filter paper 13 on the annular flanges 14 are respectively provided in the gaps. The filter screen 12 and the filter paper 13 are compressed and fixed through the annular sealing compression piece 15, disassembly and assembly between the filter screen 12 and the filter paper are facilitated, in addition, the annular sealing compression piece 15 not only plays a role in fixing, but also has a sealing effect, and fuel oil is prevented from leaking from threaded connections at two ends of the central connector 9.

Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the invention, and that, while the invention has been described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a fuel oil filter, includes fuel filter, engine oil supply pipe, oil tank return oil pipe and is used for will firing the fixed bolster of oil filter fixing on the frame, the engine oil supply pipe includes oil tank return oil pipe interface and fires oil filter fuel connection, it includes oil pipe, its characterized in that to fire oil filter: the oil tank oil return pipe interface and the fuel filter fuel oil interface are respectively provided with a quick-change connector, the oil tank oil return pipe is communicated with the oil tank oil return pipe interface through the quick-change connector, and the oil outlet pipe is communicated with the fuel filter fuel oil interface through the quick-change connector;

the fuel filter also comprises a shell, an oil inlet and an oil outlet are respectively arranged at two ends of the shell, a net-shaped filter device and a filter paper filter device for filtering fuel impurities are sequentially arranged in the shell from the oil inlet to the oil outlet, the net-shaped filter device and the filter paper filter device are respectively detachably connected with the shell, and the filter grade of the filter paper filter device is higher than that of the net-shaped filter device;

the shell comprises an upper shell, a central connector and a lower shell, wherein two ends of the central connector are respectively in threaded connection with the upper shell and the lower shell;

the net-shaped filtering device comprises a filtering cylinder and a filtering net which are sequentially arranged from an oil inlet to an oil outlet, the filtering paper filtering device comprises filtering paper, the inlet end of the filtering cylinder is in threaded connection with the oil inlet, the filtering net is detachably connected with the shell, the filtering paper is detachably connected with the shell, and the filtering grades of the filtering paper, the filtering net and the filtering cylinder are gradually reduced;

the end faces of the two ends of the central connector, which are close to the inner ring, extend outwards along the axial direction of the central connector to form annular flanges, gaps are respectively arranged between the outer sides of the annular flanges and the inner side of the upper shell and between the outer sides of the annular flanges and the inner side of the lower shell, the filter screen and the filter paper are respectively positioned at the annular flanges at the two ends of the central connector, and annular sealing pressing pieces used for fixing the filter screen and the filter paper on the annular flanges are respectively arranged in the gaps;

the filtering aperture of the filtering paper is 80-120 mu m, the mesh number of the filtering net is 60-80 meshes, and the mesh number of the filtering cylinder is 30-50 meshes.