CN209752296U - filter device - Google Patents

Abstract

the utility model provides a filtering device, which comprises a filtering unit and a cylindrical shell; the cylindrical case includes: the inner shell and the outer shell are provided with through holes; the filtering unit is bent to be zigzag and is annularly arranged between the inner shell and the outer shell; the filter unit includes: a filter layer and a protective layer secured together at a juncture; the isolation layer is connected with the protective layer; from outside to inside, isolation layer, protective layer and filter layer set up in proper order. The utility model has the advantages of high filtration efficiency.

Description

filter device

Technical Field

the utility model relates to a filter, in particular to filter equipment.

Background

At present, the structure of a general filter is as follows: the sintering filter core sets up in the casing, and particulate matter etc. in the fluid are blockked by the filter core to realize filtering purpose. Such filters have a number of disadvantages, such as:

1. The filtering efficiency is poor;

The filtration completely depends on the surface area of the filter element, and the limited surface area determines that the filtration effect is not high;

2. the cost is high;

in order to achieve a better filtering effect, the sintered filter element is easy to block, and the cost is increased by replacing the sintered filter element.

SUMMERY OF THE UTILITY MODEL

In order to solve the deficiencies in the prior art schemes, the utility model provides a filter equipment with high filtration efficiency, good filtration effect, good molding and low cost.

The utility model aims at realizing through the following technical scheme:

a filter device including a filter unit and a cylindrical housing; the cylindrical case includes:

the inner shell and the outer shell are provided with through holes;

The filtering unit is bent to be zigzag and is annularly arranged between the inner shell and the outer shell; the filter unit includes:

a filter layer and a protective layer secured together at a juncture;

The isolation layer is connected with the protective layer; from outside to inside, isolation layer, protective layer and filter layer set up in proper order.

Compared with the prior art, the utility model discloses the beneficial effect who has does:

1. the filtering efficiency is high;

The filtering units are bent into a zigzag shape and are annularly arranged, and under the isolation action of the isolation layer, fluid can enter between adjacent bends, so that a larger filtering area is realized in the same volume, and the filtering efficiency is effectively improved;

2. the filtering effect is good;

the double-layer filter material, such as PP, is adopted, so that the filter effect is improved;

3. molding is good;

the double-layer filtering material with insufficient strength is supported by the protective layer and the isolation layer, so that the forming performance is improved, such as a long cylinder shape, a sawtooth shape and the like.

Drawings

the disclosure of the present invention will become more readily understood with reference to the accompanying drawings. As is readily understood by those skilled in the art: these drawings are only intended to illustrate the technical solution of the present invention and are not intended to limit the scope of the present invention. In the figure:

fig. 1 is a diagrammatic longitudinal cross-sectional view of a filtration device according to an embodiment of the invention;

fig. 2 is a schematic cross-sectional view of a filter device according to an embodiment of the invention

fig. 3 is a schematic diagram of the deployment of an outer shell according to an embodiment of the invention.

Detailed Description

Fig. 1-3 and the following description depict alternative embodiments of the invention to teach those skilled in the art how to make and reproduce the invention. For the purpose of teaching the present invention, some conventional aspects have been simplified or omitted. Those skilled in the art will appreciate variations or substitutions from these embodiments that will be within the scope of the invention. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the invention. Accordingly, the present invention is not limited to the following alternative embodiments, but is only limited by the claims and their equivalents.

Example 1:

Fig. 1-2 schematically show a schematic cross-sectional view of a filter device according to an embodiment of the invention, which, as shown in fig. 1-2, comprises:

a housing including an inner housing 32 and an outer housing 31; the inner shell 32 and the outer shell 31 are provided with through holes;

Fig. 3 schematically shows an expanded schematic view of an outer shell according to an embodiment of the present invention, which, as shown in fig. 3, has:

the shell 31 has a plurality of circles of through holes 312 along a direction parallel to the central axis of the shell 31, in each circle, the through holes 311 extend along the circumferential direction of the shell 31, and adjacent through holes 312 are separated by connecting parts 311; the connecting parts 311 of adjacent circles are staggered along the direction parallel to the central axis of the outer shell 31, and the connecting parts 311 are collinear with the connecting parts 311 of every other circle; the thickness of the connection portion 311 becomes smaller from the center to the end of the connection portion 311 in the circumferential direction of the outer shell such that the inner side area of the connection portion 311 at the outer shell 31 is larger than the outer side area;

the inner housing 32 is identical in structure to the outer housing 31, except that: the inner side area of the connecting part positioned in the inner shell is smaller than the outer side area; the staggered design of the connecting parts of the inner shell and the outer shell and the design of the area difference between the inner side and the outer side are beneficial to improving the strength of the shell, so that the filtering unit is stably arranged between the inner shell and the outer shell;

a filter unit 21, wherein the filter unit 21 is bent in a zigzag shape and is annularly arranged between the inner housing 32 and the outer housing 31; the filter unit includes:

a filter layer and a protective layer secured together at a plurality of attachment points; a double-layered filter layer such as PP is sandwiched between the double-layered protective layers;

an isolation layer, such as a latticed plastic member, connected to an outer side of the protective layer; the isolating layer, the protective layer and the filtering layer are arranged in sequence from outside to inside;

End caps comprising an upper end cap 61 and a lower end cap 62; the upper end cap 61 has an opening, a first annular member 611 and a second annular member 612; the first annular member 611 and the second annular member 612 are disposed on the same side of the upper end cover and extend in the direction of the central axis of the upper end cover; the opening is communicated with a space enclosed by the first annular member 611;

The ends of the housing are adapted to be captured between the first ring 611 and the second ring 612.

the working process of the filtering device is as follows:

The fluid dispersedly enters between adjacent bends of the filter unit 21, which significantly increases the filter area;

the particulate matter is blocked by the filter unit 21 and clean fluid is discharged through the opening in the upper end cap 61.

Example 2:

The utility model discloses filter equipment, different from embodiment 1 is:

on the outer and/or inner shell, the connection is collinear with the connection of the adjacent turns.

Claims (9)

1. a filter device including a filter unit and a cylindrical housing; the method is characterized in that: the cylindrical housing comprises

The inner shell and the outer shell are provided with through holes;

The filtering unit is bent to be zigzag and is annularly arranged between the inner shell and the outer shell; the filter unit includes:

A filter layer and a protective layer secured together at a juncture;

The isolation layer is connected with the protective layer; from outside to inside, isolation layer, protective layer and filter layer set up in proper order.

2. the filtration device of claim 1, wherein: the shell is provided with a plurality of circles of through holes along the direction parallel to the central axis of the outer shell or the inner shell, the through holes extend along the circumferential direction of the shell in each circle, and adjacent through holes are separated by the connecting part.

3. The filtration device of claim 2, wherein: the thickness of the connecting portion becomes smaller from the center to the end of the connecting portion in the circumferential direction of the housing.

4. a filter arrangement according to claim 3 wherein: the inner side area of the connecting part positioned on the outer shell is larger than the outer side area; or the inner side area of the connecting part of the inner shell is smaller than the outer side area.

5. The filtration device of claim 2, wherein: the connecting portions of adjacent turns are collinear along a direction parallel to the central axis of the outer housing.

6. the filtration device of claim 2, wherein: and the connecting parts of adjacent circles are staggered along the direction parallel to the central axis of the outer shell, and the connecting parts are collinear with the connecting parts spaced by one circle.

7. The filtration device of claim 6, wherein: the filtering apparatus further comprises:

An end cap having an opening, a first ring member, and a second ring member; the first annular piece and the second annular piece are arranged on the same side of the end cover and extend along the central axis direction of the end cover; the opening is communicated with a space surrounded by the first annular piece;

The end of the housing is adapted to be captured between the first and second annular members.

8. the filtration device of claim 1, wherein: the isolation layer is of a net structure.

9. the filtration device of claim 1, wherein: the isolation layer is plastic, and the filter layer is PP.