CN214403793U

CN214403793U - Gas filter element and gas filter

Info

Publication number: CN214403793U
Application number: CN202120297895.5U
Authority: CN
Inventors: 李明杰; 董天华
Original assignee: Send Hannifin Filtration System Shanghai Co ltd
Current assignee: Send Hannifin Filtration System Shanghai Co ltd
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2021-10-15
Anticipated expiration: 2031-02-02

Abstract

The utility model discloses a gas filter element and a gas filter, wherein the gas filter element comprises an upper end cover, a lower end cover and a filter element component arranged between the upper end cover and the lower end cover; the interval is provided with a plurality of arc butt arms of arranging and having elasticity along the circumferencial direction on the periphery wall of lower end cover, and arc butt arm all follows clockwise or anticlockwise bending. The gas filter comprises a filter base, a cylinder body and a gas filter element, wherein the cylinder body and the gas filter element are hermetically connected with the filter base; the arc-shaped abutting arm abuts against the inner wall of the barrel body to form interference fit. The utility model discloses can effectively avoid the filter core to cause damage, drop and then lead to filtering failure because of the vibration.

Description

Gas filter element and gas filter

Technical Field

The utility model belongs to the technical field of the gas filters, especially, relate to a gas filter core and gas filter.

Background

At present, the natural gas engine for domestic commercial vehicles develops rapidly. The gas filter belongs to a necessary important part in the natural gas engine; because of the colorless and tasteless characteristic of natural gas, the tightness of a gas channel is ensured to be particularly important for the performance of an engine and the use safety of a vehicle; because the filter element in the gas filter needs to be periodically disassembled and maintained, the requirements on the sealing performance and the structural stability after the disassembly and the assembly are more severe.

In the structural design of the existing gas filter, special use working conditions such as vibration and high-pressure environment are not considered, so that the problems of filter tooth collapse, leakage, filter element damage/falling failure and the like caused by vibration and pressure mutation can occur.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gas filter core and gas filter aims at overcoming at least and leads to the filter core damaged/drop because of the vibration that exists among the above-mentioned prior art, and then leads to the problem of filtering failure.

In order to solve the technical problem, an embodiment of the utility model provides a gas filter element, which comprises an upper end cover, a lower end cover and a filter element assembly arranged between the upper end cover and the lower end cover; the periphery wall of lower end cover is provided with a plurality of arc butt arms that arrange and have elasticity along the circumferencial direction at the interval, arc butt arm is all along clockwise or anticlockwise crooked.

Further, the filter element group spare includes outer body skeleton and set up in the outer body skeleton and be cylindric filter element main part.

Further, the upper end cover includes the opening orientation the cylindric body of lower end cover, be equipped with on the inner wall of the bobbin base portion of cylindric body and extend to the inner chamber of filter core main part and with the communicating cylindric installation department of inner chamber, be equipped with on the outer wall of bobbin base portion with the communicating inlet duct of cylindric installation department.

Furthermore, two error-proofing positioning bulges are oppositely arranged on the peripheral wall of the cylindrical body; the periphery wall of the cylindrical body is relatively provided with two abutting bulges.

Further, the bottom of the cylindrical body is provided with an annular sealing rubber gasket.

The embodiment of the utility model also provides a gas filter, which comprises a filter base and a cylinder body hermetically connected with the filter base; the gas filter element is arranged in a filter cavity defined by the cylinder and the filter base, the filter cavity is divided into a dirty gas cavity and a clean gas cavity which are mutually isolated, and an air inlet channel communicated with the dirty gas cavity and an air outlet channel communicated with the clean gas cavity are arranged in the filter base; the arc-shaped abutting arm abuts against the inner wall of the barrel body to form interference fit.

Further, two first sealing rings which are axially arranged at intervals are arranged between the cylinder body and the filter base.

Furthermore, two error-proofing positioning grooves are oppositely arranged on the inner wall of the opening end of the barrel.

Further, an air inlet pipeline communicated with the air inlet channel and an air outlet pipeline communicated with the air outlet channel are integrated on the filter base.

Further, the bottom of barrel is equipped with the butterfly bolt that is used for carrying out the blowdown, just butterfly bolt with be equipped with the second sealing washer between the barrel.

After the technical scheme is adopted, the beneficial effects of the utility model are that:

the gas filter element of the utility model comprises an upper end cover, a lower end cover and a filter element component arranged between the upper end cover and the end cover; the interval is provided with a plurality of arc butt arms of arranging and having elasticity along the circumferencial direction on the periphery wall of lower end cover, and arc butt arm all follows clockwise or anticlockwise bending. The gas filter in the utility model comprises a filter base and a cylinder body which is hermetically connected with the filter base; the gas filter element is arranged in a filter cavity defined by the cylinder body and the filter base, and divides the filter cavity into a dirty gas cavity and a clean gas cavity which are mutually isolated, and an air inlet channel communicated with the dirty gas cavity and an air outlet channel communicated with the clean gas cavity are arranged in the filter base; the arc-shaped abutting arm abuts against the inner wall of the barrel body to form interference fit. The utility model discloses an inner wall interference fit of arc butt joint arm and barrel can effectively avoid the filter core to cause damage, drop and then lead to filtering failure because of the vibration.

In addition, two first sealing rings which are axially arranged at intervals are arranged between the cylinder body and the filter base; the double-sealing structure can improve the pressure resistance and the sealing property of the gas filter and effectively avoid the problem of leakage or tooth collapse caused by vibration or high pressure.

In addition, an air inlet pipeline and an air outlet pipeline are integrated on the filter base, so that leakage points can be effectively reduced, and the phenomena of metal chip pollution caused by assembly joints and pressure loss rise caused by sudden change of the sectional areas of the air inlet and the air outlet are avoided.

In addition, the bottom of the cylinder body is provided with a butterfly bolt which can realize full-manual pollution discharge; the leakage and metal scrap pollution risks caused by repeated tightening of the pollution discharge plug by the tool are avoided.

Drawings

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

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is an exploded view of the structure of FIG. 1;

FIG. 4 is a schematic structural view of the upper end cap of FIG. 3;

FIG. 5 is a schematic structural view of the lower end cap of FIG. 3;

FIG. 6 is a schematic structural view of the gas filter of the present invention;

FIG. 7 is a cross-sectional view of FIG. 6;

FIG. 8 is an enlarged view of the structure of FIG. 7 at A;

FIG. 9 is a schematic view of the filter base of FIG. 6;

FIG. 10 is a schematic view of the cartridge of FIG. 6;

in the figure: 1-upper end cover, 11-cylindrical body, 12-cylindrical mounting part, 13-air inlet conduit, 14-error-proof positioning projection, 15-abutting projection, 2-lower end cover, 21-body, 22-arc abutting arm, 23-reinforcing rib, 24-mounting cylindrical part, 3-filter element assembly, 31-outer body framework, 32-filter element main body, 4-annular sealing rubber gasket, 5-filter base, 51-cylindrical separating part, 52-air inlet channel, 53-air outlet channel, 54-air inlet channel, 55-air outlet channel, 6-cylindrical body, 61-error-proof positioning groove, 7-first sealing ring, 8-butterfly bolt, 9-second sealing ring, a-gas filter element, b-dirty air cavity and c-clean air cavity.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments and examples described herein are merely illustrative of the present invention and that the terms "top," "bottom," "upper," "lower," etc. are not intended to limit the present invention.

The first embodiment is as follows:

as shown collectively in fig. 1 to 5, the present embodiment discloses a gas filter element a, which includes an upper end cap 1, a lower end cap 2, and a filter element assembly 3 disposed between the upper end cap 1 and the lower end cap 2. The periphery wall of lower end cover 2 is provided with a plurality of arc butt arms 22 that arrange and have elasticity along the circumferencial direction at the interval, and arc butt arm 22 all follows clockwise or anticlockwise bending. Through the interference fit of the arc-shaped abutting arms 22 and the inner wall of the cylinder 6 (see fig. 7), the filter element can be effectively prevented from being damaged and falling off due to vibration, so that the filtering failure is avoided.

In this embodiment, the filter element assembly 3 includes an outer tubular framework 31 and a cylindrical filter element main body 32 disposed in the outer tubular framework 31; the filter element main body 32 is formed by folding and winding filter materials; unfiltered fuel gas enters the inner cavity of the filter element main body 32, is filtered by the filter element main body 32 and then flows out from the side part; namely, the inner cavity of the filter element main body 32 is an air inlet cavity; the outer pipe body framework 31 can prevent the phenomenon that the filter element main body 32 is deformed due to excessive air inlet pressure, and ensures the filtering effect.

In addition, the filter element assembly 3 can also be a structure which comprises an inner pipe body framework and a cylindrical filter element main body 32 arranged outside the inner pipe body framework, and in the structure, unfiltered fuel gas enters the inner pipe body framework after being filtered by the filter element main body 32 from the side part and then flows out from the end part; i.e., the inner cavity of the cartridge body 32 is an outlet cavity.

In this embodiment, the upper end cap 1 includes a cylindrical body 11 having an opening facing the lower end cap 2, a cylindrical mounting portion 12 extending to an inner cavity of the filter element main body 32 and communicating with the inner cavity is provided on an inner wall of a cylindrical bottom portion of the cylindrical body 11, and an air inlet duct 13 (elbow) communicating with the cylindrical mounting portion 12 is provided on an outer wall of the cylindrical bottom portion; pressure losses can be avoided as gas enters the interior cavity of the cartridge body 32. The lower end cover 2 comprises a cylindrical body 21 with an opening facing the upper end cover 1, an arc-shaped abutting arm 22 is arranged on the peripheral wall of the body 21, reinforcing ribs 23 are arranged between the outer wall surface of the arc-shaped abutting arm 22 and the body 21, an installation barrel portion 23 which is sunken towards the upper end cover 1 is arranged in the middle of the body 21, and the installation barrel portion 23 is matched with an inner cavity of the filter element main body 32. Wherein, cylindrical installation portion 12 and installation cylindrical portion 23 can realize the centering assembly of filter element main part 32 to improve the stability after filter element main part 32 assembles.

To avoid the uncontrollable installation position of the gas filter element a and further prevent the filtering failure caused by vibration. The outer peripheral wall of the cylindrical body 11 of this embodiment is relatively provided with two mistake proofing positioning protrusions 14 (with mistake proofing positioning groove 61 looks adaptation on the barrel 6, see fig. 7), and the outer peripheral wall of the cylindrical body 11 is also relatively provided with two butt protrusions 15 (forming interference fit with the inner wall butt of the barrel 6, further increasing the stability of the gas filter element a under the vibration condition).

In order to ensure the sealing performance when the gas filter element a is installed, and prevent gas leakage; the bottom of the cylindrical body 11 of the present embodiment is provided with an annular sealing rubber pad 4, and an inner ring area of the annular sealing rubber pad 4 is used for avoiding the air inlet duct 13.

Example two:

as shown together in fig. 6 to 10, the present embodiment discloses a gas filter, which includes a filter base 5 and a cylinder 6 hermetically connected to the filter base 5; the gas filter element comprises a cylinder 6 and a filter base 5, and is characterized by further comprising a gas filter element a disclosed in the first embodiment, wherein the gas filter element a is arranged in a filter cavity formed by surrounding the cylinder 6 and the filter base 5, the filter cavity is divided into a dirty gas cavity b and a clean gas cavity c which are mutually isolated, a cylindrical separating part 51 is arranged in the cavity of the filter base 5, the cavity is divided into two independent channels by the cylindrical separating part 51, one channel is an air inlet channel 52 (inner cavity of the cylindrical separating part 51) communicated with the dirty gas cavity b, and the other channel is an air outlet channel 53 (outer cavity of the cylindrical separating part 51) communicated with the clean gas cavity c. Wherein, the arc-shaped abutting arm 22 abuts against the inner wall of the cylinder 6 to form interference fit. The intake duct 13 extends into the intake passage 52, and communicates with the intake passage 52.

Two error-proofing positioning grooves 61 are oppositely arranged on the inner wall of the opening end of the cylinder 6; two mistake proofing location archs 14 correspond the joint with mistake proofing positioning groove 61 on the barrel 6, and the inner wall butt of butt arch 15 and barrel 6 forms interference fit. Above-mentioned fixed knot constructs can avoid under the vibration operating mode, and gas filter core a breaks away from and then leads to the problem of filtering failure because of vibrating and leading to the damage.

The structure is further optimized, and two first sealing rings 7 which are axially arranged at intervals are arranged between the cylinder body 6 and the filter base 5. The double-sealing structure can improve the pressure resistance and the sealing property of the gas filter and effectively avoid the problem of leakage or tooth collapse caused by vibration or high pressure.

Further optimizing the structure, an air inlet pipeline 54 communicated with the air inlet channel 52 and an air outlet pipeline 55 communicated with the air outlet channel 53 are integrated on the filter base 5, that is, the filter base 5, the air inlet pipeline 54 and the air outlet pipeline 55 are of an integrated structure. The structure can be integrally formed, leakage points can be effectively reduced, and the phenomena of metal chip pollution caused by the assembly joint and pressure loss rising caused by the sudden change of the sectional area of the air inlet and the air outlet are avoided. The inlet line 54 is opposite to the orifice of the inlet duct 13, and can effectively reduce pressure loss.

The structure is further optimized, the butterfly bolt 8 for discharging sewage is arranged at the bottom of the barrel 6, and the second sealing ring 9 is arranged between the butterfly bolt 8 and the barrel 6. The butterfly bolt 8 can realize full manual pollution discharge; the leakage and metal scrap pollution risks caused by the fact that the tool tightens the pollution discharge plug (the traditional pollution discharge structure) repeatedly are avoided.

The operation of the gas filter will be explained based on the above description:

referring to fig. 7, the fuel gas passes through the air inlet pipe 54, enters the air inlet conduit 13 located in the air inlet passage 52 for the most part, and then enters the inner cavity of the filter element main body 32, i.e., the dirty air cavity b; after being filtered by the filter element main body 32, clean fuel gas enters the clean gas cavity c; then enters the air outlet pipeline 55 through the air outlet channel 53 and finally is discharged.

To sum up, the utility model discloses a gas filter core and gas filter, the special operating mode such as vibration and high-pressure environment has fully been considered, through the filter seat 5 etc. of designing arc butt arm 22, double-seal structure, the protruding 15 of butt and integral type structure, has effectively avoided collapsing tooth, leaking and the filter core damage/inefficacy scheduling problem that drops because of the filter that vibration and pressure sudden change caused.

The above description is of the preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification and improvement made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. A fuel gas filter element comprises an upper end cover, a lower end cover and a filter element assembly arranged between the upper end cover and the lower end cover; the arc-shaped butt joint device is characterized in that a plurality of arc-shaped butt joint arms which are arranged along the circumferential direction and have elasticity are arranged on the peripheral wall of the lower end cover at intervals, and the arc-shaped butt joint arms are bent along the clockwise direction or the anticlockwise direction.

2. A gas fired filter element as in claim 1, wherein said filter element assembly includes an outer tubular skeleton and a cylindrical filter element body disposed within said outer tubular skeleton.

3. The gas filter element according to claim 2, wherein the upper end cap includes a cylindrical body having an opening facing the lower end cap, a cylindrical mounting portion extending to the inner cavity of the filter element main body and communicating with the inner cavity is provided on an inner wall of a bottom portion of the cylindrical body, and an air inlet duct communicating with the cylindrical mounting portion is provided on an outer wall of the bottom portion.

4. A gas filter element according to claim 3, wherein the outer peripheral wall of the cylindrical body is provided with two anti-error positioning projections; the periphery wall of the cylindrical body is relatively provided with two abutting bulges.

5. A gas filter element according to claim 3, characterised in that the bottom of said cylindrical body is provided with an annular sealing gasket.

6. A gas filter comprises a filter base and a cylinder body which is hermetically connected with the filter base; the fuel gas filter element is characterized by further comprising the fuel gas filter element as claimed in any one of claims 1 to 5, wherein the fuel gas filter element is arranged in a filter cavity defined by the cylinder and the filter base, the filter cavity is divided into a dirty gas cavity and a clean gas cavity which are isolated from each other, and an air inlet channel communicated with the dirty gas cavity and an air outlet channel communicated with the clean gas cavity are arranged in the filter base; the arc-shaped abutting arm abuts against the inner wall of the barrel body to form interference fit.

7. The gas filter of claim 6, wherein two first sealing rings are axially spaced apart from each other between said canister body and said filter base.

8. The gas filter of claim 6, wherein two error-proof positioning grooves are oppositely arranged on the inner wall of the opening end of the cylinder body.

9. The gas filter of claim 6, wherein said filter base has integrated therein an inlet duct communicating with said inlet passage and an outlet duct communicating with said outlet passage.

10. The gas filter as claimed in claim 6, wherein a butterfly bolt for discharging sewage is provided at the bottom of the cylinder, and a second sealing ring is provided between the butterfly bolt and the cylinder.