CN114087101A

CN114087101A - Diesel filter assembly

Info

Publication number: CN114087101A
Application number: CN202111343747.3A
Authority: CN
Inventors: 吴文海; 王志立; 侯伟
Original assignee: Anhui Jianghuai Automobile Group Corp
Current assignee: Anhui Jianghuai Automobile Group Corp
Priority date: 2021-11-13
Filing date: 2021-11-13
Publication date: 2022-02-25
Anticipated expiration: 2041-11-13
Also published as: CN114087101B

Abstract

The invention discloses a diesel filter assembly which comprises a filter base, a filter element, a filter tank and a cup stand, wherein the top of the filter tank is fixedly connected with the bottom of the filter base, the bottom of the filter base is also provided with an oil suction pipe, the oil suction pipe and the filter tank are coaxially arranged, the filter element is fixedly arranged on the top of the cup stand, the cup stand is detachably connected with the filter tank, a sealing surface is formed on the outer wall of the upper end of the oil suction pipe, the sealing surface is abutted against the top surface of the filter element, the oil suction pipe is positioned in a central hole of the filter element, the filter base is provided with an oil inlet and an oil outlet, and the oil outlet is communicated with the oil suction pipe. The invention can better absorb oil, can reduce the oil return amount of fuel oil during shutdown and is convenient for restarting the engine.

Description

Diesel filter assembly

Technical Field

The invention relates to a filter assembly, in particular to a diesel filter assembly, and belongs to the technical field of automobile parts.

Background

The diesel filter assembly has the functions of filtering harmful impurities and moisture in an automobile fuel system, protecting the normal work of an engine, reducing abrasion, avoiding blockage and prolonging the service life of the engine.

Generally, an automobile is provided with two diesel oil filters, one coarse filter and one fine filter, which are arranged on a chassis in series, wherein the filtering efficiency of the two filters is different, and the fuel oil quality can meet the requirement of an engine after two-stage filtration. Wherein the rough filter is provided with a one-way valve and a hand oil pump, and the fine filter is not provided with a one-way valve. The fuel oil contains impurities and moisture and also contains air, part of the air can be separated out after passing through the diesel oil filter and is gathered in the rough filtration and the fine filtration of the diesel oil filter, and if the air cannot be discharged in time, the air completely occupies the diesel oil filter, so that the engine cannot suck the diesel oil, and the engine is flamed.

The scheme that the inside air that gathers of diesel oil filter is solved at present is, opens a little exhaust hole (about 0.5 mm) in diesel oil filter's filter core upper end, and the inside air of diesel oil filter breaks up into individual little bubble through little exhaust hole, along with the even flow direction engine of fuel together, the oil mass that the engine needs is very little, and most oil can be along with returning oil pipe way back to the oil tank, and finally most gas is along with returning oil back to the oil tank, and the atmosphere is arranged into in the exhaust hole of rethread oil tank.

The air separated out by the diesel filter and the air entering the fuel through the vent hole at the upper end of the filter element can reach a balance, so that the oil in the diesel filter is kept at a certain height, and the height is determined by the size of the vent hole and the oil supply amount. By designing and matching the size of the vent hole, the oil level is ensured to be kept in the range of 1/2 to 2/3 of the diesel filter.

The air extracted from the diesel filter and the air entering the fuel through the vent holes at the upper end of the filter element reach a balance, and the general oil level is kept in the range of 1/2 to 2/3 of the diesel filter. Because the exhaust hole is arranged at the top end of the diesel filter, after the diesel filter is shut down, oil entering the oil pipe of the engine can flow back and is filled into the part with air on the upper part of the diesel filter, so that oil can not be supplied when the engine is started. The problem is solved, a one-way valve can be added at the outlet of the fine filter, or an engine oil inlet pipe is designed into a shape like a Chinese character 'ji', but the cost is increased or the design difficulty of the whole vehicle pipeline is increased.

The exhaust hole of the prior art is punched on the filter element of the diesel filter, so that the precision requirement of the end cover of the filter element is high, meanwhile, the filter element is a consumable and needs to be replaced periodically, and the use cost is increased undoubtedly.

The exhaust hole is arranged on a filter element of the diesel filter, so that part of fuel oil directly enters a filtered pipeline without filter paper, and the filtering effect is poor.

Disclosure of Invention

The invention aims to provide a diesel filter assembly, which can better absorb oil, reduce the oil return amount of fuel oil during shutdown and facilitate the restart of an engine to solve the defects in the prior art.

The invention provides a diesel filter assembly, which comprises a filter base and a filter element, and further comprises a filter tank and a cup stand, wherein the top of the filter tank is fixedly connected with the bottom of the filter base, the bottom of the filter base is also provided with an oil suction pipe, the oil suction pipe and the filter tank are coaxially arranged, the filter element is fixedly arranged at the top of the cup stand, the cup stand is detachably connected with the filter tank, the outer wall of the upper end of the oil suction pipe is provided with a sealing surface, the sealing surface is abutted against the top surface of the filter element, the oil suction pipe is positioned in a central hole of the filter element, the filter base is provided with an oil inlet and an oil outlet, and the oil outlet is communicated with the oil suction pipe.

In the foregoing diesel filter assembly, preferably, the oil inlet and the oil outlet are both disposed on the side wall of the filter base, and both are disposed along the horizontal direction, the axis of the oil inlet is perpendicular to the axis of the oil outlet, and the oil inlet and the oil outlet are both formed with threads.

In the foregoing diesel filter assembly, preferably, the canister is of a cylindrical structure, a mounting seat is formed on an outer wall surface of the canister, and a plurality of mounting holes are formed in the mounting seat at equal intervals along the vertical direction.

In the aforementioned diesel filter assembly, preferably, an internal thread is formed on the inner wall of the lower end of the filter tank, an external thread is formed on the outer wall of the upper end of the cup stand, the upper end of the cup stand is in threaded connection with the lower end of the filter tank, a limiting boss is further formed on the outer wall of the cup stand, and a plurality of sealing rings are arranged on the outer wall of the cup stand and close to the limiting boss.

In the diesel filter assembly, preferably, a filter element mounting seat is arranged in the cup stand, and a connecting seat in threaded fit with the filter element mounting seat is formed on the bottom surface of the filter element.

In the foregoing diesel filter assembly, preferably, the oil suction pipe is composed of a first pipe section, a second pipe section and a third pipe section which are connected in sequence, the top of the first pipe section is fixedly connected with the bottom surface of the filter base, a sealing surface is formed at a connection position of the first pipe section and the second pipe section, a sealing gasket is fixedly arranged on the sealing surface, a step surface is formed at a connection position of the second pipe section and the third pipe section, and an exhaust hole is formed on the step surface.

In the foregoing diesel filter assembly, preferably, a distance between the bottom surface of the step surface and the bottom surface of the filter element is greater than one half of the total height of the filter element and less than two thirds of the total height of the filter element.

In the foregoing diesel filter assembly, preferably, a distance between a bottom surface of the third tube section and a bottom surface of the filter element is greater than half of a height of the filter element.

Compared with the prior art, the oil filter comprises a filter base, a filter element, a filter tank and a cup stand, wherein the top of the filter tank is fixedly connected with the bottom of the filter base, the bottom of the filter base is also provided with an oil suction pipe, the oil suction pipe and the filter tank are coaxially arranged, the filter element is fixedly arranged at the top of the cup stand, the cup stand is detachably connected with the filter tank, a sealing surface is formed on the outer wall of the upper end of the oil suction pipe, the sealing surface is abutted against the top surface of the filter element, the oil suction pipe is positioned in a central hole of the filter element, the filter base is provided with an oil inlet and an oil outlet, and the oil outlet is communicated with the oil suction pipe. By arranging the oil suction pipe, the engine can better suck oil, and the engine is prevented from flameout during running; and when the engine is stopped, the oil pipe can reduce the fuel oil return flow in the fuel oil pipeline, so that the engine is easier to start next time.

Drawings

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

fig. 2 is an enlarged view of a portion a in fig. 1.

Description of reference numerals: the filter element comprises a filter base 1, a filter element 2, a filter tank 3, a cup holder 4, an oil suction pipe 5, a sealing surface 6, an oil inlet hole 7, an oil outlet hole 8, a mounting seat 9, a mounting hole 10, a limiting boss 11, a sealing ring 12, a filter element mounting seat 13, a connecting seat 14, a first pipe section 15, a second pipe section 16, a third pipe section 17, a sealing gasket 18, a step surface 19 and an exhaust hole 20.

Detailed Description

The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.

The embodiment of the invention comprises the following steps: as shown in figures 1 and 2, a diesel filter assembly comprises a filter base 1, a filter element 2, a filter tank 3 and a cup holder 4, wherein the filter tank 3 is of a cylindrical structure, in order to reduce the manufacturing cost, the filter tank 3 is made of plastic, the top of the filter tank 3 is fixedly connected with the bottom of the filter base 1, the bottom of the filter base 1 is also provided with an oil suction pipe 5, the oil suction pipe 5 and the filter tank 3 are coaxially arranged, the filter base 1 is provided with an oil inlet hole 7 and an oil outlet hole 8, the oil outlet hole 8 is communicated with the top of the oil suction pipe 5, the filter element 2 is fixedly arranged at the top of the cup holder 4, the cup holder 4 is detachably connected with the bottom of the filter tank 3, the outer wall at the upper end of the oil suction pipe 5 is provided with a sealing surface 6, the sealing surface 6 is abutted against the top surface of the filter element 2 and used for preventing fuel from entering the central hole of the filter element 2 from a gap between the oil inlet hole and the central hole of the filter element 5, the fuel enters the central hole after being filtered by the side wall of the filter element 2, and then enters the oil supply pipeline through the oil suction pipe 5.

According to the invention, the oil suction pipe 5 is arranged, and the oil suction pipe 5 extends into the central hole of the filter element 2, so that the lower end of the oil suction pipe 5 can be ensured to be always positioned in fuel oil, so as to absorb oil, and effectively prevent the engine from flameout.

In a specific embodiment, the oil inlet hole 7 and the oil outlet hole 8 are both provided on the side wall of the filter base 1, both are arranged in the horizontal direction, the axis of the oil inlet hole 7 and the axis of the oil outlet hole 8 are perpendicular to each other, and threads are formed in both the oil inlet hole 7 and the oil outlet hole 8. The space intercommunication between the outer wall of inlet port 7 and filter core 2 and the inner wall of canister 3, the fuel enters into canister 3 through inlet port 7 and is located this space after, filters the back through the lateral wall of filter core 2, and clean fuel enters into the centre bore of filter core 2, and the top and the bottom of filter core 2 are sealed platelike structure, and the lateral wall of filter core 2 is filtration, and filter core 2 can adopt conventional technical means to make.

With oil inlet 7 and oil outlet 8 all along horizontal direction arrangement, can be convenient for the connection of pipeline, because the vehicle longitudinal direction space is limited, if set up at the top of straining seat 1 then be not convenient for the installation and the fixed of pipeline.

Further, an installation seat 9 is formed on an outer wall surface of the canister 3, and a plurality of installation holes 10 are formed on the installation seat 9 at equal intervals in the vertical direction. The filter tank 3 can be fixed on the frame through the mounting holes 10 and the bolts, and various vehicle types can be adapted through the plurality of mounting holes 10, so that the universality is improved.

In order to replace the filter element 2 conveniently, preferably, an internal thread is formed on the inner wall of the lower end of the filter tank 3, an external thread is formed on the outer wall of the upper end of the cup holder 4, the upper end of the cup holder 4 is in threaded connection with the lower end of the filter tank 3, a limiting boss 11 is further formed on the outer wall of the cup holder 4, and a plurality of sealing rings 12 are arranged on the outer wall of the cup holder 4 close to the limiting boss 11. A filter element mounting seat 13 is arranged in the cup stand 4, and a connecting seat 14 which is in threaded fit with the filter element mounting seat 13 is formed on the bottom surface of the filter element 2.

Adopt this kind of structure to make things convenient for the change of filter core 2, effectively improve change efficiency.

In a preferred embodiment, the oil suction pipe 5 is composed of a first pipe section 15, a second pipe section 16 and a third pipe section 17 which are connected in sequence, the top of the first pipe section 15 is fixedly connected with the bottom surface of the filter base 1, a sealing surface 6 is formed at the connecting position of the first pipe section 15 and the second pipe section 16, a sealing gasket 18 is fixedly arranged on the sealing surface 6, a step surface 19 is formed at the connecting position of the second pipe section 16 and the third pipe section 17, and a vent hole 20 is formed on the step surface 19.

The distance between the bottom surface of the stepped surface 19 and the bottom surface of the filter element 2 is greater than one half of the total height of the filter element 2 and less than two thirds of the total height of the filter element 2. The distance between the bottom surface of the third tube section 17 and the bottom surface of the filter insert 2 is more than half the total height of the filter insert 2.

The sealing surface 6 is arranged to prevent unfiltered fuel from entering the central hole of the filter element 2, and the exhaust hole 20 is arranged on the step surface 19, so that on one hand, dirty fuel cannot enter the engine through the exhaust hole 20, and the engine is well protected. On the other hand, compared with the traditional filtering exhaust hole, the position of the filtering exhaust hole is lower and is closer to the oil liquid level during working, when the engine stops, the exhaust hole 20 is quickly submerged after the fuel oil in the fuel oil outlet pipe flows back to form a closed liquid level, so that only a small amount of fuel oil flows back, when the engine is started next time, the air sucked by the engine can be reduced, and the fuel supply is easier to start. Moreover, the exhaust hole 20 is arranged on the step surface 19, and the exhaust hole does not need to be processed on the filter element 2, so that the cost of the filter element is reduced, and the use cost is reduced.

The construction, features and functions of the present invention are described in detail in the embodiments illustrated in the drawings, which are only preferred embodiments of the present invention, but the present invention is not limited by the drawings, and all equivalent embodiments modified or changed according to the idea of the present invention should fall within the protection scope of the present invention without departing from the spirit of the present invention covered by the description and the drawings.

Claims

1. The utility model provides a diesel filter assembly, includes and strains seat (1) and filter core (2), its characterized in that: still include canister (3) and saucer (4), the top of canister (3) with the bottom fixed connection of straining base (1), the bottom of straining base (1) still is provided with oil absorption pipe (5), oil absorption pipe (5) with canister (3) coaxial arrangement, filter core (2) fixed mounting be in the top of saucer (4), saucer (4) with canister (3) can dismantle the connection, be formed with sealed face (6) on the outer wall of oil absorption pipe (5) upper end, sealed face (6) with the top surface butt of filter core (2), oil absorption pipe (5) are located in the centre bore of filter core (2), be provided with inlet port (7) and oil outlet (8) on straining base (1), oil outlet (8) with oil absorption pipe (5) intercommunication.

2. The diesel filter assembly of claim 1 wherein: the oil inlet hole (7) with oil outlet (8) all set up strain on the lateral wall of seat (1), the two all arranges along the horizontal direction, the axis of oil inlet hole (7) with the axis mutually perpendicular of oil outlet (8), oil inlet hole (7) with all be formed with the screw thread in oil outlet (8).

3. The diesel filter assembly of claim 1 wherein: the filter tank (3) is of a cylindrical structure, a mounting seat (9) is formed on the outer wall surface of the filter tank (3), and a plurality of mounting holes (10) are formed in the mounting seat (9) at equal intervals along the vertical direction.

4. The diesel filter assembly of claim 3 wherein: be formed with the internal thread on the inner wall of straining jar (3) lower extreme, be formed with the external screw thread on the outer wall of saucer (4) upper end, the upper end of saucer (4) with the lower extreme threaded connection of straining jar (3), still be formed with spacing boss (11) on the outer wall of saucer (4), be close to on the outer wall of saucer (4) the position of spacing boss (11) is provided with a plurality of sealing rings (12).

5. The diesel filter assembly of claim 4 wherein: a filter element mounting seat (13) is arranged in the cup stand (4), and a connecting seat (14) in threaded fit with the filter element mounting seat (13) is formed on the bottom surface of the filter element (2).

6. The diesel filter assembly of any of claims 1-5 wherein: the oil suction pipe (5) is composed of a first pipe section (15), a second pipe section (16) and a third pipe section (17) which are sequentially connected, the top of the first pipe section (15) is fixedly connected with the bottom surface of the filter base (1), the connecting position of the first pipe section (15) and the second pipe section (16) forms the sealing surface (6), a sealing gasket (18) is fixedly arranged on the sealing surface (6), a step surface (19) is formed at the connecting position of the second pipe section (16) and the third pipe section (17), and an exhaust hole (20) is formed in the step surface (19).

7. The diesel filter assembly of claim 6 wherein: the distance between the bottom surface of the step surface (19) and the bottom surface of the filter element (2) is larger than one half of the total height of the filter element (2) and smaller than two thirds of the total height of the filter element (2).

8. The diesel filter assembly of claim 7 wherein: the distance between the bottom surface of the third pipe section (17) and the bottom surface of the filter element (2) is more than half of the total height of the filter element (2).