CN215232707U

CN215232707U - Filter screen based on metal wire

Info

Publication number: CN215232707U
Application number: CN202120516591.3U
Authority: CN
Inventors: 张泓; 李善吉; 汪强兵; 郭瑜; 孙涛; 李俊鹏; 陈汉标; 吴焕杰; 肖冰华; 吴均鸿
Original assignee: Guangzhou Sailong Supplementary Manufacturing Co ltd; Guangzhou Institute of Technology
Current assignee: Guangzhou Sailong Supplementary Manufacturing Co ltd; Guangzhou Institute of Technology
Priority date: 2021-03-11
Filing date: 2021-03-11
Publication date: 2021-12-21
Anticipated expiration: 2031-03-11

Abstract

The utility model belongs to the technical field of filter equipment, a filter screen based on wire is disclosed. The metal wire-based filter screen is a twill woven mesh consisting of warps and wefts, wherein the diameters of the warps are larger than those of the wefts, and the number of the wefts is more than that of the warps. The filter screen based on the metal wires has the outstanding characteristics of high filtering precision, stable filtering effect and difficult deformation, and can fully adapt to the filtering requirements in an actual laboratory.

Description

Filter screen based on metal wire

Technical Field

The utility model belongs to the technical field of filter equipment, in particular to filter screen based on wire.

Background

The filter paper is a paper with good filtering performance, is loose, and has strong liquid absorption performance. Analytical laboratories often use filter paper as the filtration medium to separate the solution from the solid. The filter paper produced in China mainly comprises three types, namely quantitative analysis filter paper, qualitative analysis filter paper and chromatography qualitative analysis filter paper. Both the concepts of quantitative and qualitative filter paper are unique to cellulose filter paper, and qualitative filter paper is used for qualitative chemical analysis and corresponding filtration separation. However, the above filter paper has the following disadvantages: 1. all are disposable products, and can not be reused; 2. high temperature resistance or strong acid and alkali resistance; 3. the filter paper has low mechanical strength and toughness, and thus has poor mechanical stability and filtration precision.

Aiming at the defects, the metal wire filter screen products are produced on the market by adopting metal wires or metal wire woven nets as raw materials, winding and compounding the metal wires or reasonably matching a plurality of layers of metal wire woven nets, and pressing, rolling and high-temperature treatment. The weaving method of the metal wire filter screen generally comprises a plain weaving method and a twill weaving method, wherein the plain weaving method is formed by interweaving every two warp yarns and every two weft yarns up and down once, the metal wire filter screen with about 500 meshes (the aperture is 26 mu m) can be woven, if the filtering aperture is smaller than 26 mu m, the plain weaving method is difficult to weave the metal wire screen with the corresponding aperture, and the filtering effect is unstable; the twill weave is a structure formed by combining more than three warps and wefts, wherein the two warps and wefts are crossed with each other, but the twill woven net is easily inclined and deformed in the using process, the mesh stability of the filter screen is poor, and the filtering precision is reduced.

It is therefore desirable to provide a wire mesh filter product with improved mechanical properties and improved filtration accuracy.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the above-mentioned prior art at least. Therefore, the utility model provides a filter screen based on wire, the filter screen has the outstanding characteristics of filter fineness height, filter effect stability and non-deformable, can fully adapt to the filtration demand in the actual laboratory.

The utility model provides a filter screen based on wire comprises twill woven mesh by warp and weft, warp's silk footpath is greater than weft's silk footpath, weft's quantity is greater than warp's quantity.

The utility model discloses an adopt thicker warp and thinner tram to carry out the twill and weave intensively, this kind of intensive weaving makes the twill weave dense net firm, can bear great working strength, use non-deformable, and the filter effect is stable. Wherein every woof shuttles back and forth down with adjacent per two warp silks, and the warp interval is greater than the woof interval, can form the pore in a direction, forms the macropore in another direction, and the woof closely draws close and forms toper or wedge shape trompil for the twill close grain net that forms has the thickness that traditional twill woven mesh and plain weave net can not reach, and can bear bigger load and do not take place to warp.

Preferably, the diameter of the warp yarn is 0.5-3.2mm, and the diameter of the weft yarn is 0.02-0.36 mm.

More preferably, the diameter of the warp yarn is 1.2-3.2mm, and the diameter of the weft yarn is 0.2-0.3 mm.

Preferably, the number ratio of the weft threads to the warp threads is (6.75-9.23): 1.

more preferably, the number ratio of the weft threads to the warp threads is (7-8.5): 1.

preferably, the pore size of the wire-based filter mesh is 3 to 45 μm. Due to the high mesh stability of the metal wire-based filter screen, a good filtering effect can be realized when the pore diameter is controlled to be 3-5 mu m, and the metal wire-based filter screen has good filtering precision.

Preferably, the material of the wire-based filter screen is selected from nickel or 316L stainless steel. Reachs after screening different metal wire materials, compares in traditional iron wire or aluminium silk material, the material of nickel or 316L stainless steel can more be applicable to filter screen based on the wire, realize better mechanical properties and filter fineness.

Preferably, the frame of the wire-based filter screen is a square frame or an annular frame. Different types of frames can be selected according to different application scenes of the metal wire-based filter screen.

The utility model also provides a manufacturing method of above-mentioned filter screen based on wire, including following step:

and weaving warps and wefts by adopting a twill method, and then pressing, rolling and heating to obtain the metal wire-based filter screen.

Compared with the prior art, the beneficial effects of the utility model are as follows:

(1) the metal wire-based filter screen of the utility model has good mechanical performance, is not easy to deform in the using process, and can bear larger working strength (can bear the pressure of 0.2MPa at most);

(2) the metal wire-based filter screen of the utility model also has the outstanding advantages of high filtering precision and good filtering effect, and the minimum aperture of the filter screen can reach 3 mu m;

(3) filter screen based on wire easily processes, easily accomplishes procedures such as tailor, bend, tensile.

Drawings

FIG. 1 is a schematic view of the structure of a wire-based filter screen in example 1;

FIG. 2 is a cross-sectional view of the wire-based filter screen of FIG. 1;

wherein the warp threads 1 and the weft threads 2.

Detailed Description

In order to make the technical solutions of the present invention more clearly apparent to those skilled in the art, the following examples are given for illustration. It should be noted that the following embodiments are only preferred embodiments of the present invention, and the claimed protection scope is not limited by the present invention, and any modification, substitution, or combination made without departing from the spirit and principle of the present invention is included in the protection scope of the present invention.

The starting materials, reagents or apparatuses used in the following examples are conventionally commercially available or can be obtained by conventionally known methods, unless otherwise specified.

Example 1

This embodiment provides a filter screen based on wire, constitutes twill woven mesh by warp and woof, and wherein the diameter of warp is 1.2mm, and the diameter of woof is 0.2mm, and the quantity ratio of woof and warp is 7. The aperture of the filter screen based on the metal wires is 5 microns, the material is nickel, and the frame of the filter screen based on the metal wires is an annular frame.

The manufacturing method of the filter screen based on the metal wires comprises the following steps: and weaving the warps and the wefts by adopting a twill method, and then pressing, rolling and heating to prepare the metal wire-based filter screen.

The embodiment carries out the twill through adopting thicker warp and thinner tram and weaving densely, and this kind of dense weaving makes the twill weave dense net firm, can bear great working strength, and use non-deformable, the filter effect is stable. Fig. 1 is a schematic view showing a structure of the wire-based filter net, and fig. 2 is a sectional view of the wire-based filter net shown in fig. 1. Wherein every woof 2 shuttles back and forth with every two adjacent warp 1 within a definite time, and warp 1 interval is greater than woof 2 interval, can form the pore in a direction, forms the macropore in another direction, and woof 1 closely draws together and forms toper or wedge form trompil for the dense line net of twill that forms can bear bigger load and not take place to warp.

Example 2

This embodiment provides a wire-based filter screen, which differs from the embodiments only in that: the diameter of the warp threads is 2mm, the diameter of the weft threads is 0.3mm, and the number ratio of the weft threads to the warp threads is 8.5. The aperture of the metal wire filter screen is 15 mu m, the material is 316L stainless steel, and the frame of the metal wire-based filter screen is a square frame.

Comparative example 1

The comparative example provides a wire filter screen, and the diameter of used warp and weft is the same, and warp interval is equal with the woof interval, adopts twill to weave formation wire filter screen, and the aperture of wire filter screen is 30 mu m.

Comparative example 2

The comparative example provides a metal wire filter screen, the diameter of the used warp and weft is the same, the warp interval is equal to the weft interval, the metal wire filter screen is formed by plain weaving, and the aperture of the metal wire filter screen is 25 μm.

Product effectiveness testing

The filter screens of examples 1-2 and comparative examples 1-2 were subjected to performance tests, and the test results are shown in table 1.

TABLE 1 Filter Screen Performance test

Test items	Example 1	Example 2	Comparative example 1	Comparative example 2
					Pore diameter	5μm	15μm	30μm	25μm
Maximum bearing pressure	0.2MPa	0.18MPa	0.12MPa	0.14MPa

As can be seen from table 1, compared to the conventional twill woven mesh and plain woven mesh (comparative examples 1 to 2), the wire-based filter screen obtained in examples 1 to 2 can bear higher working strength (can bear 0.2MPa of pressure at the highest) while ensuring better filtering accuracy and smaller pore size, and is less likely to deform during use.

Claims

1. The utility model provides a filter screen based on wire, its characterized in that comprises warp and weft twill woven mesh, the silk footpath of warp is greater than the silk footpath of weft, the quantity of weft is more than the quantity of warp.

2. The wire-based filter screen according to claim 1, wherein the warp has a wire diameter of 0.5-3.2mm and the weft has a wire diameter of 0.02-0.36 mm.

3. The wire-based filter screen according to claim 2, wherein the warp has a wire diameter of 1.2-3.2mm and the weft has a wire diameter of 0.2-0.3 mm.

4. The wire-based filtration screen of claim 1, wherein the ratio of the number of weft threads to the number of warp threads is (6.75-9.23): 1.

5. the wire-based filter screen of claim 4, wherein the ratio of the number of weft threads to the number of warp threads is (7-8.5): 1.

6. the wire-based filtration web of claim 1, wherein the wire-based filtration web has a pore size of 3-45 μm.

7. The wire-based filter screen of claim 1, wherein the wire-based filter screen is selected from nickel or 316L stainless steel.

8. The wire-based filter screen of claim 1, wherein the border of the wire-based filter screen is a square frame or an annular frame.