CN212188163U

CN212188163U - Filter paper and folding filter element

Info

Publication number: CN212188163U
Application number: CN202020793776.4U
Authority: CN
Inventors: 张巍巍; 秦文斌; 郁爱东
Original assignee: Shanghai Grignard Fluid Equipment Technology Co ltd
Current assignee: Shanghai Grignard Fluid Equipment Technology Co ltd
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2020-12-22
Anticipated expiration: 2030-05-13

Abstract

The utility model discloses an embodiment relates to a filter equipment, in particular to filter paper and folding filter core, include: the folding layers are arranged around the preset axis in a surrounding manner, and the directions of the folding layers around the preset axis are sequentially connected; each folded layer comprises a high folded layer and a low folded layer connected with the high folded layer; wherein, in the surrounding direction from the high folding layer to the low folding layer, the folding height of the other folding layers is gradually reduced in a descending mode. Compare with prior art, because each folded layer of filter paper is along high folded layer towards keeping away from the direction of encircleing of low folded layer to diminishing gradually the form, thereby making fluid medium when getting into each folded layer of filter paper, can following the tangential direction and passing through, making the particulate matter that is detained be difficult to pile up on the filter paper surface, therefore can effectively avoid the phenomenon that the jam appears in the filtration pore on the filter core shell, prolonged the life of filter core greatly.

Description

Filter paper and folding filter element

Technical Field

The utility model discloses an embodiment relates to a filter equipment, in particular to filter paper and folding filter core.

Background

The folding filter element is widely applied to impurity removal filtration, clarification filtration and sterilization filtration in all industries due to the characteristics of small floor area and large filtration area. As industry competition increases, the demand for products increases, and higher demands are made on filter elements. In particular, the requirement on the service life of the folding filter element is more definite. Because most folding filter core at present, the height of the book of each folded layer of its filter paper that adopts is generally for isometric structural design, can pass through with the vertical direction when fluid medium gets into the filter core folded layer to make the particulate matter that is detained pile up on the filter media surface, and then block up the filtration pore on the filter core shell, thereby influence the life of filter core, this kind of phenomenon is promptly called dead end filtration promptly.

SUMMERY OF THE UTILITY MODEL

The utility model discloses embodiment's aim at designs a filter paper and folding filter core for fluid medium can pass through with the tangential direction when getting into each folded layer of the filter paper of filter core, makes to be difficult to pile up on the filter paper surface by the particulate matter of interception, therefore effectively avoided the filtration pore of filter core phenomenon that the jam appears, prolongs the life of filter core greatly.

In order to solve the above technical problem, an embodiment of the present invention provides a filter paper, including: the folding layers are arranged around a preset axis in a surrounding mode, and the folding layers are sequentially connected around the direction of the preset axis; each fold layer is provided with a high fold layer and a low fold layer connected with the high fold layer;

and the folding heights of the rest folding layers are gradually reduced in a descending mode in the surrounding direction from the high folding layer to the low folding layer.

Additionally, the utility model discloses an embodiment still provides a folding filter core, include: the outer shell and the inner shell are coaxially arranged along a preset axis, the inner shell is arranged in the outer shell, and the outer wall of the inner shell and the inner wall of the outer shell are mutually separated to form an annular containing area;

the pleated filter element further comprises: the filter paper as described above, which is wound on the outer wall of the inner casing;

wherein a gap formed between the filter paper and the inner wall of the housing is gradually enlarged in a surrounding direction along the high fold layer toward a direction away from the low fold layer.

Compare with prior art, because each folded layer of filter paper is along high folded layer towards keeping away from the direction of encircleing of low folded layer to diminishing gradually the form, thereby making fluid medium when getting into each folded layer of filter paper, can following the tangential direction and passing through, making the particulate matter that is detained be difficult to pile up on the filter media surface, therefore can effectively avoid the phenomenon that the filtration pore appearance of filter element shell blockked up, prolonged the life of filter core greatly.

Further, each of the folds includes: the first folding part points to the preset axis, and the two folding edges extend from the first folding part to the direction far away from the preset axis;

in the surrounding direction around the preset axis, one of the folded edges of any folded layer is connected with one of the folded edges of the other folded layer adjacent to the folded edge, and the connected part forms a second folded part which is opposite to the first folded part in direction.

Furthermore, the folding height of the low folding layer is half of the folding height of the high folding layer.

Further, each first folding part is of an arc-shaped structure.

Furthermore, each second folding part is of an arc-shaped structure.

Further, the filter paper is made of a high-permeability diversion layer material.

Furthermore, first filtering holes through which a fluid medium passes are distributed on the outer shell, and second filtering holes through which the fluid medium passes are distributed on the inner shell.

Further, the outer shell and the inner shell are both polypropylene shells.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

FIG. 1 is a schematic structural view of a filter paper according to a first embodiment of the present invention;

FIG. 2 is a schematic view of the assembly of the filter paper, the outer casing and the inner casing according to the first embodiment of the present invention;

fig. 3 is a schematic structural view of a folding filter element according to a first embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.

The first embodiment of the present invention relates to a filter paper, as shown in fig. 1, comprising: the folding device comprises a plurality of folding layers 1 which are annularly arranged around a preset axis, and the folding layers 1 are sequentially connected around the direction of a preset axis 2. And each fold layer 1 has a high fold layer 1A and a low fold layer 1B connected to the high fold layer 1A. In the surrounding direction along the high folded layer 1A toward the low folded layer 1B, the folded heights of the other folded layers 1 are gradually reduced in a descending manner.

It can be seen from the above, because each fold 1 of the filter paper is in the direction of surrounding away from the low fold 1B along the high fold 1A, and gradually decreases in a decreasing manner, so that the fluid medium can pass through from the tangential direction when entering each fold 1 of the filter paper, and the particles trapped are not easy to accumulate on the surface of the filter paper, thereby effectively avoiding the phenomenon of blockage of the filter holes on the filter element shell, and greatly prolonging the service life of the filter element.

Specifically, in the present embodiment, as shown in fig. 1, each fold layer 1 includes: a first folding part 11 pointing to the preset axis 2, and two folding edges 12 extending from the first folding part 11 in the direction away from the preset axis. Wherein, in the surrounding direction around the preset axis 2, one of the folding edges 12 of any folding layer 1 is connected with one of the folding edges 12 of the other folding layer 1 adjacent to the folding edge 12, and the connected part forms a second folding part 3 which is opposite to the first folding part 11. In practice, as shown in fig. 2, each second fold 3 of filter paper can be applied against the inner shell 4 of the filter insert, so that the first folds 11 of each fold 1 of the filter insert can have different vertical distances from the inner wall of the outer shell 5 of the filter insert. Therefore, in the direction of encirclement along high folded layer 1A towards keeping away from low folded layer 1B, can make the clearance that forms between the inner wall of whole filter paper and shell 5 grow gradually, an approximate heliciform, thereby guaranteed that fluid medium gets into the shell 5 back in through each first filtration pore 51 that distributes in shell 5, fluid medium can follow each folded layer 1 of tangential direction through filter paper, make the particulate matter that is detained be difficult to pile up on the filter paper surface, the phenomenon of jam appears in first filtration pore 51 on the shell 5 has effectively been avoided, the life of filter core has been prolonged greatly.

It is worth mentioning that, in the present embodiment, as shown in fig. 1 and fig. 2, the fold height of the low fold layer 1B is half of the fold height of the high fold layer 1A, so that the remaining fold layers 1 may have a significant difference in height gradient in the circulating direction along the high fold layer 1A toward the direction away from the low fold layer 1B. So that the fluid medium can have better tangential fluidity when passing through each fold 1 of the filter paper. Of course, in practical use, the folded height of the low folded layer 1B may be other heights, but it is sufficient to ensure that the low folded layer 1B is shorter than the folded height of the high folded layer 1A.

In addition, in the present embodiment, the filter paper is made of a high-permeability flow guide material, so that the filter paper itself can have strong softness, and therefore, as shown in fig. 1, the first folded portion 11 and the second folded portion 3 of each folded layer 1 form an arc-shaped structure due to the material characteristics thereof, so that every two adjacent folded layers 1 have a certain degree of attachment directly. Thereby further increasing the filtering area of the filter element and leading the filter element to have better filtering performance.

A second embodiment of the present invention relates to a folding filter, as shown in fig. 3, comprising: an outer shell 5 and an inner shell 4 coaxially arranged along a predetermined axis 2. Wherein, inner shell 4 sets up in outer shell 5, and separates each other between the inner wall of the outer wall of inner shell 4 and outer shell 5, forms annular accommodation area 6. Furthermore, the outer shell 5 is distributed with a first filter hole 51 through which the fluid medium passes, and the inner shell 4 is distributed with a second filter hole 41 through which the fluid medium passes.

As shown in fig. 3, the pleated filter element of the present embodiment further includes: as the filter paper 7 according to the first embodiment, the filter paper 7 is wound around the outer wall of the inner casing 4. So that the clearance formed between the filter paper 7 and the inner wall of the housing 5 becomes gradually larger in the circulating direction along the high fold 1A toward the direction away from the low fold 1B, and is approximately spiral.

In practical application, as shown in fig. 3, the fluid medium enters the outer shell 5 through the first filter holes 51 distributed on the outer shell 5, and when passing through the filter paper 7, the fluid medium can be filtered by the folds 1 of the filter paper 7, and finally the fluid medium filtered by the filter paper 7 can enter the fluid channel 42 surrounded by the inner shell 4 through the second filter holes 41 distributed on the inner shell 4, so as to complete the fluid medium transportation. From this it is difficult to see, because each fold 1 of filter paper 7 diminishes gradually in a degressive manner towards the direction of encirclement that keeps away from low fold 1B along high fold 1A, consequently, when fluid medium gets into each fold 1 of filter paper 7, can follow the tangential direction and pass through for the particulate matter that is detained is difficult to pile up on filter paper 7 surface, therefore can effectively avoid the phenomenon that the jam appears in first filtration pore 51 on the shell 5 of filter core, has prolonged the life of filter core greatly.

In addition, the outer shell 5 and the inner shell 4 mentioned in the present embodiment are made of a polymer material, for example, a polypropylene shell.

It will be understood by those skilled in the art that the foregoing embodiments are specific to the implementation of the present invention and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.

Claims

1. A filter paper, comprising: the folding layers are arranged around a preset axis in a surrounding mode, and the folding layers are sequentially connected around the direction of the preset axis; each fold layer is provided with a high fold layer and a low fold layer connected with the high fold layer;

2. The filter paper of claim 1, wherein each fold comprises: the first folding part points to the preset axis, and the two folding edges extend from the first folding part to the direction far away from the preset axis;

3. The filter paper of claim 1, wherein the fold height of the low fold is half the fold height of the high fold.

4. The filter paper of claim 2, wherein each of the first folds is an arc-shaped structure.

5. The filter paper of claim 2, wherein each of the second folds is an arcuate structure.

6. The filter paper according to any one of claims 1 to 5, wherein the filter paper is a high permeability flow guide material.

7. A pleated filter element, comprising: the outer shell and the inner shell are coaxially arranged along a preset axis, the inner shell is arranged in the outer shell, and the outer wall of the inner shell and the inner wall of the outer shell are mutually separated to form an annular containing area;

the pleated filter element further comprises: the filter paper according to any one of claims 1 to 6, wound on an outer wall of the inner casing;

8. The folding filter element of claim 7, wherein the outer shell has first filter openings for passage of a fluid medium therethrough, and the inner shell has second filter openings for passage of a fluid medium therethrough.

9. The folding cartridge of claim 7, wherein the outer shell and the inner shell are both polypropylene shells.