CN114087101B

CN114087101B - Diesel filter assembly

Info

Publication number: CN114087101B
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: 2023-05-26
Anticipated expiration: 2041-11-13
Also published as: CN114087101A

Abstract

The invention discloses a diesel filter assembly, which comprises a filter seat, 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 seat, an oil suction pipe is further arranged at the bottom of the filter seat, 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 and is abutted with the top surface of the filter element, the oil suction pipe is positioned in a central hole of the filter element, an oil inlet hole and an oil outlet hole are formed in the filter seat, and the oil outlet hole is communicated with the oil suction pipe. The invention can absorb oil better, reduce the oil return amount of the fuel oil during stopping and facilitate the restarting of the engine.

Description

Diesel filter assembly

Technical Field

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

Background

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

In general, an automobile is provided with two diesel filters, one for rough filtration and one for fine filtration, which are arranged on a chassis in series, and the two filters have different filtration efficiencies, so that the fuel quality reaches the engine requirement 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 provided with no one-way valve. Besides impurities and moisture, the fuel oil also contains air, part of the air is separated out after the air passes through the diesel filter and is gathered in rough filtration and fine filtration of the diesel filter, and if the air cannot be timely discharged, the air fully occupies the diesel filter, so that the engine cannot inhale diesel, and the engine is flameout.

The scheme of the inside air that gathers of current solution diesel oil filter is, open 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 a little bubble of individual through little exhaust hole, and along with the even flow direction engine of fuel together, the oil mass that the engine needs is very little, and most oil can get back to the oil tank along with the oil return pipeline, and finally most gas gets back to the oil tank along with the oil return, and the exhaust hole of rethread oil tank lets into the atmosphere.

The air separated out from the diesel filter and the air entering the fuel oil through the exhaust hole at the upper end of the filter element can be balanced, so that the oil in the diesel filter is kept at a certain height, and the height is determined by the size of the exhaust hole and the oil quantity of the oil supply. The height of the oil liquid is kept within the range of 1/2 to 2/3 of that of the diesel filter by designing and matching the size of the exhaust hole.

The air separated out from the diesel filter and the air entering the fuel oil through the exhaust hole at the upper end of the filter element can reach a balance, and the height of the oil is generally kept in the range of 1/2 to 2/3 of that of the diesel filter. Because the exhaust hole is arranged at the top end of the diesel filter, after the engine is stopped, the oil in the oil inlet pipe of the engine can flow back and fill the part with air at the upper part of the diesel filter, so that the engine cannot be supplied with oil when being started. The problem can be solved by adding a one-way valve at the outlet of the fine filter or designing the engine oil inlet pipe into a shape like a Chinese character 'ji', but the cost is increased or the design difficulty of a whole vehicle pipeline is increased.

The exhaust hole in the prior art is formed in the filter element of the diesel filter, so that the accuracy requirement of the end cover of the filter element is high, and meanwhile, the filter element is a consumable product and needs to be replaced regularly, which clearly leads to the increase of the use cost.

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

Disclosure of Invention

The invention aims to provide a diesel filter assembly, which solves the defects in the prior art, can absorb oil better, can reduce the oil return amount of fuel oil during shutdown and is convenient for restarting an engine.

The invention provides a diesel filter assembly, which comprises a filter seat, a filter element, a filter tank and a cup holder, wherein the top of the filter tank is fixedly connected with the bottom of the filter seat, an oil suction pipe is further arranged at the bottom of the filter seat, the oil suction pipe is coaxially arranged with the filter tank, the filter element is fixedly arranged at the top of the cup holder, the cup holder 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, and an oil inlet hole and an oil outlet hole are formed in the filter seat and are communicated with the oil suction pipe.

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

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

In the foregoing diesel filter assembly, preferably, an inner thread is formed on an inner wall of a lower end of the canister, an outer thread is formed on an outer wall of an upper end of the cup holder, the upper end of the cup holder is in threaded connection with the lower end of the canister, a limit boss is further formed on an outer wall of the cup holder, and a plurality of seal rings are arranged on the outer wall of the cup holder at positions close to the limit boss.

In the foregoing diesel filter assembly, preferably, a filter element mounting seat is disposed 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 sequentially connected, the top of the first pipe section is fixedly connected with the bottom surface of the filter seat, the connection position of the first pipe section and the second pipe section forms the sealing surface, a sealing gasket is fixedly arranged on the sealing surface, a step surface is formed at the connection position of the second pipe section and the third pipe section, and an exhaust hole is formed in the step surface.

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

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

Compared with the prior art, the filter comprises a filter seat, a filter element, a filter tank and a cup holder, wherein the top of the filter tank is fixedly connected with the bottom of the filter seat, the bottom of the filter seat 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 holder, the cup holder 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 with the top surface of the filter element, the oil suction pipe is positioned in a central hole of the filter element, an oil inlet hole and an oil outlet hole are formed in the filter seat, and the oil outlet hole is communicated with the oil suction pipe. According to the invention, the oil suction pipe is arranged, so that the engine can absorb oil better, and the engine is prevented from flameout during running; when the engine is stopped, the fuel return quantity in the fuel oil pipeline can be reduced due to the arrangement of the oil pipe, 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.

Reference numerals illustrate: the filter comprises a filter seat 1, a filter element 2, a filter tank 3, a cup stand 4, an oil suction pipe 5, a sealing surface 6, an oil inlet 7, an oil outlet 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 by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

Embodiments of the invention: as shown in fig. 1 and 2, a diesel oil filter assembly comprises a filter base 1, a filter element 2, a filter tank 3 and a cup stand 4, wherein the filter tank 3 is of a cylindrical structure, the filter tank 3 is made of plastic materials for reducing manufacturing cost, the top of the filter tank 3 is fixedly connected with the bottom of the filter base 1, an oil suction pipe 5 is further arranged at the bottom of the filter base 1, the oil suction pipe 5 and the filter tank 3 are coaxially arranged, an oil inlet 7 and an oil outlet 8 are arranged on the filter base 1, the oil outlet 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 stand 4, the cup stand 4 is detachably connected with the bottom of the filter tank 3, a sealing surface 6 is formed on the outer wall of the upper end of the oil suction pipe 5 and is in butt joint with the top surface of the filter element 2 for preventing fuel from entering the central hole of the filter element 2 from a gap between the cup stand and the filter element 2, the fuel is located in the central hole of the filter element 2, the fuel enters the central hole through the oil suction pipe 5 after being filtered by the side wall of the filter element 2, and enters into a supply passage through the oil suction pipe 5.

According to the invention, the oil suction pipe 5 is arranged, the oil suction pipe 5 penetrates into the central hole of the filter element 2, so that the lower end of the oil suction pipe 5 is always positioned in fuel oil, the oil suction is convenient, the flameout of the engine can be effectively prevented, and when the engine is stopped, the fuel oil in the fuel oil pipeline flows back into the central hole of the filter element 2, and the oil return quantity can be reduced through the arrangement of the oil suction pipe 5, so that the next ignition of the engine is easier.

In a specific embodiment, the oil inlet 7 and the oil outlet 8 are both arranged on the side wall of the filter base 1, and are both arranged along the horizontal direction, the axis of the oil inlet 7 is perpendicular to the axis of the oil outlet 8, and threads are formed in the oil inlet 7 and the oil outlet 8. The oil inlet 7 is communicated with the space between the outer wall of the filter element 2 and the inner wall of the filter tank 3, fuel enters the filter tank 3 through the oil inlet 7 and then is located in the space, clean fuel enters the central hole of the filter element 2 after being filtered through the side wall of the filter element 2, the top and the bottom of the filter element 2 are of sealed plate-shaped structures, the side wall of the filter element 2 is of a filtering structure, and the filter element 2 can be manufactured by adopting conventional technical means.

Arranging both the oil inlet hole 7 and the oil outlet hole 8 in the horizontal direction can facilitate the connection of the pipe because the space in the longitudinal direction of the vehicle is limited, and the installation and fixation of the pipe is inconvenient if it is provided at the top of the filter base 1.

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

For the convenience of replacing the filter element 2, an internal thread is preferably 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 at positions, close to the limiting boss 11, on the outer wall of the cup holder 4. 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.

The filter element 2 is convenient to replace by adopting the structure, and the replacement efficiency is effectively improved.

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 sequentially connected, 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 connection 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 connection position of the second pipe section 16 and the third pipe section 17, and an exhaust hole 20 is formed on the step surface 19.

The distance between the bottom surface of the step surface 19 and the bottom surface of the filter element 2 is more 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 pipe section 17 and the bottom surface of the filter insert 2 is greater than half the total height of the filter insert 2.

The arrangement of the sealing surface 6 can prevent unfiltered fuel from entering into the central hole of the filter element 2, and the exhaust hole 20 is arranged on the step surface 19, so that dirty fuel can not enter the engine through the exhaust hole 20 on one hand, and the engine can be 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 in the working process, when the engine is stopped, the exhaust hole 20 can be submerged soon after the fuel in the fuel outlet pipe flows back, so that a closed liquid level is formed, and therefore, only a small amount of fuel flows back, the air inhaled by the engine can be reduced in the next starting process, and the fuel supply is easier to start. Furthermore, the vent hole 20 is arranged on the step surface 19, so that the vent hole is not required to be processed on the filter element 2, and the cost of the filter element is reduced, thereby reducing the use cost.

While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.

Claims

1. The utility model provides a diesel oil filter assembly, includes filter stand (1) and filter core (2), its characterized in that: the filter comprises a filter seat (1), and is characterized by further comprising a filter tank (3) and a cup holder (4), wherein the top of the filter tank (3) is fixedly connected with the bottom of the filter seat (1), an oil suction pipe (5) is further arranged at the bottom of the filter seat (1), the oil suction pipe (5) is coaxially arranged with the filter tank (3), the filter element (2) is fixedly arranged at the top of the cup holder (4), the cup holder (4) is detachably connected with the filter tank (3), a sealing surface (6) is formed on the outer wall of the upper end of the oil suction pipe (5), the sealing surface (6) is in butt joint with the top surface of the filter element (2), the oil suction pipe (5) is positioned in a central hole of the filter element (2), an oil inlet (7) and an oil outlet (8) are arranged on the filter seat (1), and the oil outlet (8) is communicated with the oil suction pipe (5).

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 connection position of the first pipe section (15) and the second pipe section (16) forms a sealing surface (6), a sealing gasket (18) is fixedly arranged on the sealing surface (6), a step surface (19) is formed at the connection 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);

the distance between the bottom surface of the step surface (19) and the bottom surface of the filter element (2) is more 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 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).

2. A diesel fuel filter assembly as set forth in claim 1 wherein: the oil inlet (7) and the oil outlet (8) are both arranged on the side wall of the filter base (1), and are both arranged in the horizontal direction, the axis of the oil inlet (7) is mutually perpendicular to the axis of the oil outlet (8), and threads are formed in the oil inlet (7) and the oil outlet (8).

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

4. A diesel fuel filter assembly as set forth in claim 3 wherein: the novel cup holder is characterized in that 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 limit 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) at positions close to the limit boss (11).

5. The diesel fuel filter assembly of claim 4, wherein: the cup stand (4) is internally provided with a filter element mounting seat (13), 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).