CN209752295U - filter unit and filter device - Google Patents

Abstract

the utility model provides a filtering unit and a filtering device, wherein the filtering unit comprises a first filtering layer; a second filter layer through which fluid passes in sequence; a first protective layer and a second protective layer, the first and second filter layers being sandwiched between the first and second protective layers; the net-shaped layer, the first protective layer and the first filter layer are arranged in sequence. The utility model has the advantages of good filtering effect, good forming and the like.

Description

filter unit and filter device

Technical Field

The utility model relates to a filter, in particular to filter unit and 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 effect and the maintainability are mutually contradictory;

In order to achieve a good filtering effect, the filter element is easy to block; if the filter element is not easy to block, the filtering effect is poor;

2. 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;

3. 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 unit 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 unit including a first filter layer; the filter unit further comprises:

A second filter layer through which fluid passes in sequence;

a first protective layer and a second protective layer, the first and second filter layers being sandwiched between the first and second protective layers;

the net-shaped layer, the first protective layer and the first filter layer are arranged in sequence.

The utility model aims at providing a filter equipment who uses above-mentioned filter unit still, this utility model purpose can be realized through following technical scheme:

the filter device of the filter unit comprises a filter element and a cylindrical shell; the filtering apparatus further comprises:

And the filter unit is arranged between the filter element and the cylindrical shell.

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

1. The filtering effect is good;

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

The filter element is used in series, larger particles in fluid are blocked firstly, and then the fluid is filtered by the filter element, so that the filtering effect is further improved

2. The filtering efficiency is high;

The filtering units are bent to be zigzag and are annularly arranged (on the periphery of the filter element), and under the isolation action of the mesh layer, fluid can enter between adjacent bends, so that the filtering unit has a larger filtering area in the same volume and effectively improves the filtering efficiency;

3. molding is good;

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

4. the cost is low;

The filter unit has low cost, and can be directly replaced after being blocked.

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 cross-sectional view of a filter unit 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 filter element 11 and a cylindrical case 31, the cylindrical case 31 having an opening; the cartridge 11 and the cylindrical housing 31 are prior art in the field and will not be described in detail herein;

a filter unit 21, wherein the filter unit 21 is bent to be zigzag and arranged between the filter element 11 and the cylindrical shell 31 in a cylindrical shape;

End caps 61-62, the upper end cap 61 having an opening, a first annular portion 611 and a second annular portion 612; the first annular portion 611 and the second annular portion 612 are provided on the same side of the upper end cover and extend in the direction of the central axis of the upper end cover 61; the opening communicates with a space surrounded by the first annular portion 611; the first annular portion 611 is clamped inside the end of the filter cartridge 11, the end of the filter unit 21 being clamped between the filter cartridge 11 and the second annular portion 612;

Fig. 3 schematically shows a schematic cross-sectional view of a filter unit according to an embodiment of the invention, which, as shown in fig. 3, comprises:

a first filter layer 213 and a second filter layer 214, such as PP, through which the fluid passes in sequence, the first filter layer 213 and the second filter layer 214;

a first protective layer 212 and a second protective layer 215, the first filter layer 213 and the second filter layer 214 being sandwiched between the first protective layer 212 and the second protective layer 215;

a mesh layer 211, such as a plastic mesh layer, wherein the mesh layer 211, the first protective layer 212 and the first filter layer 213 are sequentially arranged from outside to inside; fluid is allowed to enter between adjacent bends under the isolating action of the mesh layer 211.

The working process of the filtering device is as follows:

The fluid enters the shell 31 from an inlet on the shell 31 and then dispersedly enters between adjacent bends of the filter unit 21, so that the filtering area is remarkably improved;

The larger particles are blocked by the filter unit 21, after which the fluid is filtered by the filter cartridge 11;

the clean fluid exits through an opening in the end cap 61.

example 2:

according to the utility model discloses application example in the filter equipment water purification system of embodiment 1.

in the application example, the reticular layer is plastic, the first filter layer and the second filter layer are PP, and the protective layer is made of non-woven fabric; having a plurality of connection points where the first protective layer, the first filter layer, the second filter layer, and the second protective layer are secured together; the inner wall of the second annular part is provided with an internal thread, and the outer wall of the cylindrical shell is provided with an external thread matched with the internal thread.

Claims (8)

1. A filter unit including a first filter layer; the method is characterized in that: the filter unit further comprises:

a second filter layer through which fluid passes in sequence;

A first protective layer and a second protective layer, the first and second filter layers being sandwiched between the first and second protective layers;

the net-shaped layer, the first protective layer and the first filter layer are arranged in sequence.

2. the filter unit of claim 1, wherein: the filtering unit is bent to be zigzag and is enclosed to be cylindrical.

3. A filter unit according to claim 2, wherein: the mesh layer, the first protective layer and the first filter layer are arranged from outside to inside.

4. the filter unit of claim 1, wherein: there are a plurality of attachment points where the first protective layer, first filter layer, second filter layer, and second protective layer are secured together.

5. The filter unit of claim 1, wherein: the reticular layer is made of plastic, and the first filter layer and/or the second filter layer are/is PP.

6. a filter device comprising a filter element and a cylindrical housing; the method is characterized in that: the filtering apparatus further comprises:

A filter unit according to any one of claims 2 to 5, which is disposed between the filter element and the cylindrical housing.

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

an end cap having an opening, a first annular portion, and a second annular portion; the first annular part and the second annular part 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 part;

The first annular portion is captured within an end of the filter element, and an end of the filter unit is captured between the filter element and the second annular portion.

8. the filtration device of claim 7, wherein: the inner wall of the second annular part is provided with internal threads, and the outer wall of the cylindrical shell is provided with external threads matched with the internal threads.