CN214597920U

CN214597920U - Filter element of urea filter

Info

Publication number: CN214597920U
Application number: CN202023340500.XU
Authority: CN
Inventors: 张佳; 张鹏; 陈惠英
Original assignee: Shanghai Inter Auto Parts Co ltd
Current assignee: Shanghai Inter Auto Parts Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-11-05
Anticipated expiration: 2030-12-31

Abstract

The application discloses urea filter's filter core relates to filter technical field. The technical scheme is that the filter element of the urea filter comprises an upper end cover and a lower end cover, wherein cylindrical filter paper is fixed between the upper end cover and the lower end cover, and a compensation piece is fixed outside the filter paper. This application is rational in infrastructure, compensates under low temperature environment, avoids water to freeze and leads to the increase in size and strut the shell of filter.

Description

Filter element of urea filter

Technical Field

The application relates to the technical field of filters, in particular to a filter element of a urea filter.

Background

The filter is a component that functions to filter impurities or gas through filter paper, and is generally an automobile filter, which is a component of an engine. The filters are classified into an oil filter, a fuel filter, an air conditioner filter, etc. according to the difference of the filtering function. The engine has three filters of air, engine oil and fuel oil, which are generally called as 'three filters'.

The urea filter is generally used for treating automobile exhaust, and urea is used as a reducing agent to remove carbon oxides in the exhaust, so that pollution is reduced. However, under the condition of low air temperature, water in the urea filter is easy to freeze and expand, and the urea filter is a small-size component and is easy to crack a shell of the urea filter when the water freezes and expands.

In order to solve the problems, a filter element of a urea filter is provided.

SUMMERY OF THE UTILITY MODEL

In order to improve the condition that the easy burst casing of the frozen inflation of water, this application provides a urea filter's filter core.

The application provides a filter core of urea filter adopts following scheme:

the filter element of the urea filter comprises an upper end cover and a lower end cover, wherein cylindrical filter paper is fixed between the upper end cover and the lower end cover, and a compensation piece is fixed outside the filter paper.

By adopting the scheme, the compensation piece is a compressible and resilient object, and when water freezes and expands, the compensation piece is compressed, so that the space in the filter is increased, more ice can be accommodated, the pressure of the filter shell is reduced, and the shell is not easy to crack by the ice; meanwhile, when the filter element is replaced, the compensation piece is replaced synchronously, so that the compensation piece is convenient to replace, and the situation that the compensation piece is aged on the shell of the filter element to influence the shell is avoided.

Optionally, the compensating member is provided with a plurality of pieces and is evenly spaced along a circumferential direction of the filter paper.

By adopting the scheme, the compensation is carried out in multiple directions, and the situation that one side of the shell is not compensated and is burst is avoided.

Optionally, a telescopic space is arranged between the compensation piece and the upper end cover and between the compensation piece and the lower end cover.

By adopting the scheme, the ice formation of the water is not achieved at once, the compensation piece is squeezed in the process that the water gradually becomes ice, and the compensation piece can be squeezed to the telescopic interval, so that the compensation piece is compressed.

Optionally, the compensation piece protrudes from the outer edges of the upper end cover and the lower end cover.

Through adopting above-mentioned scheme, the outstanding part of compensating part can play the cushioning effect, avoids filter core and casing to take place the striking.

Optionally, a support frame is further fixed between the upper end cover and the lower end cover, and the compensation piece is fixed on the support frame.

Through adopting above-mentioned scheme, adopt the support frame to fix the compensating part for the compensating part is more firm.

Optionally, the support frame includes an elastic pipe clamped in the filter paper, two ends of the elastic pipe are respectively and fixedly connected to the upper end cover and the lower end cover, a clamping seam axially arranged along one side of the elastic pipe, which faces away from the filter paper, is arranged on one side of the elastic pipe, and the compensation piece is clamped at the clamping seam.

Through adopting above-mentioned scheme, the compensating part card is on elastic pipe spare, and elastic pipe spare plays the guard action to the compensating part, and when water freezes, elastic pipe spare and compensating part all receive the extrusion, compensate the circumference of filter paper, play the effect of protection filter paper.

Optionally, the support frame further includes an elastic connection strip, and two ends of the elastic connection strip are respectively and fixedly connected to the two adjacent elastic pipe fittings.

Through adopting above-mentioned scheme, elastic connection strip plays the effect of fixed elasticity pipe fitting, can hold the elasticity pipe fitting simultaneously and play limiting displacement, avoids the ice of filter paper position too big along the circumference and the radial expansion of filter paper.

Optionally, a gap exists between the elastic connecting strip and the filter paper.

By adopting the scheme, the filter paper is prevented from being damaged by the elastic connecting strips when expanding along with the ice.

Optionally, one end of the compensation piece is matched with the upper end cover and the elastic pipe fitting to form a first sealed space, and the other end of the compensation piece is matched with the lower end cover and the elastic pipe fitting to form a second sealed space.

Through adopting above-mentioned scheme, urea solution can't get into first confined space and second confined space, and first confined space and second confined space provide the space for the flexible of compensation piece.

Optionally, a compensation pad enclosing the upper end cover, the lower end cover and the filter paper is fixed outside the upper end cover.

Through adopting above-mentioned scheme, the compensation pad further compensates for the casing is more difficult to be propped up by ice and splits.

In summary, the present application has the following beneficial effects:

1. the filter paper and the shell are effectively protected, so that the filter paper and the shell are not easy to damage;

2. the filter element and the compensating piece can be replaced simultaneously, and the compensating piece is prevented from being aged in the shell.

Drawings

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

FIG. 2 is a front sectional view of the overall structure of embodiment 1;

FIG. 3 is a top sectional view of the overall structure of embodiment 1;

FIG. 4 is a front sectional view of the overall structure of embodiment 2;

FIG. 5 is a front sectional view showing the overall structure of embodiment 3.

Reference numerals: 1. an upper end cover; 2. a lower end cover; 3. filtering paper; 4. a compensating member; 5. telescoping intervals; 6. a support frame; 7. an elastic tube member; 8. clamping and sewing; 9. an elastic connecting strip; 10. a gap; 11. a first sealed space; 12. a second sealed space; 13. a compensation pad; 14. a discharge hole; 15. a circular protrusion; 16. a central pipe frame; 17. epoxy resin glue; 18. a clamping groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a filter element of a urea filter.

Example 1: referring to fig. 1 and 2, the fuel cell comprises an upper end cover 1 and a lower end cover 2, wherein the upper end cover 1 and the lower end cover 2 are coaxially arranged in a circular shape, the diameter of the lower end cover 2 is slightly larger than that of the upper end cover 1, a discharge hole 14 is arranged in the center of the upper end cover 1, an upward circular protrusion 15 is correspondingly arranged in the center of the lower end cover 2, a central pipe frame 16 is fixed between the upper end cover 1 and the lower end cover 2, the lower end of the central pipe frame 16 is sleeved on the circular protrusion 15, and the upper end of the central pipe frame 16 is aligned with the discharge hole 14.

The outer edge of the upper end cover 1 is turned downwards, the outer edge of the lower end cover 2 is turned upwards, a layer of epoxy resin glue 17 is arranged on the lower surface of the upper end cover 1 and the upper surface of the lower end cover 2, and the lower two ends of the central pipe frame 16 are fixed on the lower end cover 2 through the epoxy resin glue 17.

The filter paper 3 is further arranged between the upper end cover 1 and the lower end cover 2, the filter paper 3 is folded and enclosed into a cylinder shape, the central pipe frame 16 is sleeved in the cylindrical filter paper 3 and plays a supporting role for the filter paper 3, the upper end of the cylindrical filter paper 3 is fixed on the upper end cover 1 through epoxy resin glue 17, and the lower end of the cylindrical filter paper 3 is fixed on the lower end cover 2 through epoxy resin glue 17.

Referring to fig. 1 and 3, a support frame 6 is fixed outside the cylindrical filter paper 3, and a plurality of compensation members 4 are fixed through the support frame 6, in this embodiment, four compensation members 4 are provided and uniformly distributed at intervals along the circumferential direction of the filter paper 3, the compensation members 4 are EPDM buffer foam, the compensation members 4 are long strips with sector-shaped cross sections, clamping grooves 18 are provided on two side surfaces of the compensation members 4, the center of circle end of the cross section of the compensation members 4 faces the side of the filter paper 3, and the arc-shaped side surfaces of the compensation members 4 face away from the filter paper 3; the supporting frame 6 comprises an elastic pipe fitting 7, the elastic pipe fitting 7 is made of elastic plastic materials in the embodiment, the elastic pipe fitting 7 corresponds to the compensating piece 4 one by one, the upper end and the lower end of the elastic pipe fitting 7 are fixed on the upper end cover 1 and the lower end cover 2 through epoxy resin glue 17, the section of the elastic pipe fitting 7 is triangular, one side edge of the elastic pipe fitting 7 faces the filter paper 3, the part of the elastic pipe fitting 7 is inserted between the folding parts of the filter paper 3, so that two side surfaces of the elastic pipe fitting 7 are attached to the filter paper 3, a clamping seam 8 arranged along the axial direction of the elastic pipe fitting 7 is arranged on one side surface of the elastic pipe fitting 7 back to the filter paper 3, the width of the clamping seam 8 is smaller than that of the side surface of the elastic pipe fitting 7, so that one side plate provided with the clamping seam 8 is provided with edges, the compensating piece 4 is clamped at the clamping seam 8, the compensating piece 4 is partially embedded into the elastic pipe fitting 7, the residual edges of the side plate of the elastic pipe fitting 7 are clamped into clamping grooves 18 on the compensating piece 4, at this time, the arc-shaped surface of the compensating part 4 protrudes out of the outer edges of the upper end cover 1 and the lower end cover 2, and a telescopic space 5 exists between the upper end and the lower end of the compensating part 4 and the upper end cover 1 and the lower end cover 2.

The support frame 6 further comprises an elastic connecting strip 9, in this embodiment, the elastic connecting strip 9 is made of elastic plastic materials, two elastic connecting strips 9 are arranged between two adjacent elastic pipe fittings 7, two ends of the elastic connecting strip 9 are integrally arranged on the two adjacent elastic pipe fittings 7, and the elastic connecting strip 9 is arc-shaped and has a gap 10 with the filter paper 3 so as not to obstruct the filter paper 3 from filtering.

Example 2: as shown in fig. 4, the present embodiment is different from embodiment 1 in that two end portions of the compensating part 4 are protruded, the protruded portion at one end of the compensating part 4 is attached to the inner side surface of the flange of the upper end cover 1, so that the compensating part 4 is matched with the upper end cover 1 and the elastic pipe 7 to form a first sealed space 11, and the protruded portion at the other end of the compensating part 4 is attached to the inner side surface of the flange of the lower end cover 2, so that the compensating part 4 is matched with the lower end cover 2 and the elastic pipe 7 to form a second sealed space 12.

Example 3: as shown in fig. 5, the present embodiment is different from embodiment 1 in that a plurality of elastic iron sheets are welded to the outer wall of the upper end cap 1 and are arranged at intervals along the circumferential direction, a compensation pad 13 is fixed on the elastic iron sheets, and the compensation pad 13 surrounds the upper end cap 1, the lower end cap 2 and the filter paper 3 in a circle.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims

1. The utility model provides a filter core of urea filter, includes upper end cover (1) and lower end cover (2), upper end cover (1) with be fixed with the filter paper (3) of tube-shape between lower end cover (2), its characterized in that: the filter paper (3) is fixed with the compensating part (4) outward, the upper end cover (1) with still be fixed with support frame (6) between lower end cover (2), compensating part (4) are fixed on support frame (6), support frame (6) are including pressing from both sides elasticity pipe fitting (7) in filter paper (3), the both ends of elasticity pipe fitting (7) respectively fixed connection in upper end cover (1) with lower end cover (2), elasticity pipe fitting (7) dorsad one side of filter paper (3) is provided with along its axial setting's joint seam (8), compensating part (4) joint is in joint seam (8) department.

2. A filter element for a urea filter according to claim 1, wherein: the compensating piece (4) is provided with a plurality of pieces which are uniformly arranged at intervals along the circumferential direction of the filter paper (3).

3. A filter element for a urea filter according to claim 1, wherein: and telescopic intervals (5) are arranged between the compensation piece (4) and the upper end cover (1) and between the compensation piece and the lower end cover (2).

4. A filter element for a urea filter according to claim 1, wherein: the compensation piece (4) protrudes out of the outer edges of the upper end cover (1) and the lower end cover (2).

5. A filter element for a urea filter according to claim 1, wherein: the support frame (6) further comprises an elastic connecting strip (9), and two ends of the elastic connecting strip (9) are respectively and fixedly connected to the two adjacent elastic pipe fittings (7).

6. A filter element for a urea filter according to claim 5, wherein: a gap (10) is formed between the elastic connecting strip (9) and the filter paper (3).

7. A filter element for a urea filter according to claim 1, wherein: one end of the compensating piece (4) is matched with the upper end cover (1) and the elastic pipe fitting (7) to form a first sealing space (11), and the other end of the compensating piece (4) is matched with the lower end cover (2) and the elastic pipe fitting (7) to form a second sealing space (12).

8. A filter element for a urea filter according to claim 1, wherein: and a compensation pad (13) surrounding the upper end cover (1), the lower end cover (2) and the filter paper (3) is fixed outside the upper end cover (1).