CN218924075U

CN218924075U - High flux sintered net filter core

Info

Publication number: CN218924075U
Application number: CN202223363732.6U
Authority: CN
Inventors: 张伟伟; 杨来强
Original assignee: Xinxiang Filter Purification Equipment Co ltd
Current assignee: Xinxiang Filter Purification Equipment Co ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-04-28
Anticipated expiration: 2032-12-15

Abstract

The utility model discloses a high-flux sintering net filter element, which comprises a filter tube formed by longitudinally sewing a sintering net through rolling welding, wherein the sintering net is sheet-shaped formed by stacking, arranging and pressing a plurality of layers of metal nets, and a lining net layer is arranged at the peripheral edge between two adjacent layers of metal nets in the plurality of layers of metal nets. According to the utility model, the lining net is added on the periphery of the sintering net, so that the thickness of the periphery of the sintering net is increased, the density of metal wires on the periphery of the sintering net is increased, so that during welding, the metal net at the welding position is melted to generate enough solution to fill a welding seam for welding forming, the welding quality is ensured, and the lining net is added at the periphery of the sintering net, which is needed to be welded, so that the welding forming can be ensured, the aperture of a supporting layer in the prior art can be increased, the strength of the supporting layer is improved, the strength of a filter element is ensured, and further, the porosity of a filter layer can be improved due to the increase of the strength of the supporting layer, so that the flow rate is increased while the filtering precision is ensured.

Description

High flux sintered net filter core

Technical Field

The utility model relates to the technical field of sintering net filter cores, in particular to a high-flux sintering net filter core.

Background

The sintered net filter core is a filter core which takes a plurality of layers of metal sintered nets as filter materials, and when in processing, the metal sintered net sheets are rolled and welded to be longitudinally sewn into a filter cylinder, and the sintered nets are formed by special lamination pressing of a plurality of layers of stainless steel nets, vacuum sintering and annealing treatment.

Along with the national requirements on environmental protection and the improvement of productivity, the original filtering equipment cannot meet the use requirements, and in order to save the cost, the original size of the filtering tank is not replaced generally, so that the filter element circulation is improved to meet the use requirements. The improvement of the flux of the sintering net filter material requires the increase of the porosity of the base net, but the increase of the porosity reduces the net wire density of the base net, and when the longitudinal seam is welded after rolling and when the end cover is welded, the melted sintering net is used as filling metal, so that the welding seam cannot be filled timely and effectively due to insufficient molten liquid, thereby generating welding defects, even being incapable of welding and forming, causing leakage and even delamination at the welding seam, and affecting the service life of the filter element.

Disclosure of Invention

The utility model aims at the defects and shortcomings of the prior art, and provides the high-flux sintered net filter element which ensures the filtering precision and the strength of the filter element and improves the flow.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a high-flux sintered net filter element comprises a filter tube which is formed by longitudinally sewing a sintered net through rolling welding, wherein the sintered net is sheet-shaped which is formed by laminating, arranging and pressing a plurality of layers of metal nets, and a lining net layer is arranged at the peripheral edge between two adjacent layers of metal nets in the plurality of layers of metal nets. The peripheral edges of the metal mesh are welding positions, a lining mesh layer is added, and the density of metal wires is ensured, so that the welding requirement is met.

Preferably, the width of the lining mesh layer is 4 mm-6 mm. The backing layer is too narrow to meet the soldering requirements and too wide to affect the throughput.

Preferably, the multi-layer metal mesh comprises a supporting layer, a shunt layer, a filtering layer and a protective layer which are sequentially arranged, wherein the supporting layer is an orifice plate, and a lining mesh layer is arranged between the supporting layer and the shunt layer. The lining net is added at the periphery of the sintering net at the positions where welding is needed, so that welding forming can be guaranteed, the aperture of the supporting layer in the prior art can be increased, the strength of the supporting layer is improved, the strength of the filter element is guaranteed, and further, the porosity of the filter layer can be improved due to the increase of the strength of the supporting layer, so that the flow rate is increased while the filtering precision is guaranteed.

Preferably, the backing layer comprises a first backing layer and a second backing layer. The density of the metal wires is ensured by adding two lining net layers, so that the welding seam is effectively filled by enough molten metal (welding water) as filling metal in welding, and the welding quality is ensured while the welding forming is ensured.

Preferably, the support layer, the first lining mesh layer and the second lining mesh layer are sequentially arranged, and the porosity is sequentially increased.

Preferably, the mesh number of the first lining mesh layer is 40-80 mesh, and the mesh number of the second lining mesh layer is 80-120 mesh.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the lining net is added on the periphery of the sintering net, so that the thickness of the periphery of the sintering net is increased, the density of metal wires on the periphery of the sintering net is increased, and when welding is performed, the metal net at the welding position is melted to generate enough welding water to fill a welding seam for welding and forming, and the welding quality is ensured;

the lining net is added at the positions needing to be welded around the sintering net, so that welding forming can be guaranteed, the aperture of the supporting layer in the prior art can be increased, the strength of the supporting layer is improved, the strength of the filter element is guaranteed, and further, the porosity of the filter layer can be improved due to the increase of the strength of the supporting layer, so that the flow rate is increased while the filtering precision is guaranteed.

Drawings

FIG. 1 is a schematic cross-sectional view of the longitudinal seam location of a sintered mesh filter tube of a high flux sintered mesh filter cartridge of the present utility model.

In the figure: 100. a metal sintering net; 110. the support layer 120, the shunt layer 130, the filter layer 140 and the protective layer; 200. a backing layer 210, a first backing layer 220, a second backing layer; 300. and (3) welding seams.

Detailed Description

Embodiments of the utility model are described in detail below with reference to the attached drawing figures, but the utility model can be implemented in a number of different ways, which are defined and covered by the claims.

Examples: as shown in fig. 1, the present utility model provides a high flux sintered mesh filter core, which comprises a filter tube formed by longitudinally sewing a sintered mesh 100 through rolling welding, wherein the sintered mesh 100 is a sheet shape formed by stacking, arranging and pressing multiple layers of metal meshes, and a lining mesh layer 200 is arranged at the peripheral edge between two adjacent layers of metal meshes in the multiple layers of metal meshes. The multi-layer metal mesh comprises a supporting layer 110, a shunt layer 120, a filtering layer 130 and a protective layer 140 which are sequentially arranged, wherein the supporting layer is an orifice plate, a lining mesh layer 200 is positioned between the supporting layer 110 and the shunt layer 120, the width of the lining mesh layer 200 is 4 mm-6 mm, preferably 5mm, the welding quality is affected when the lining mesh layer 200 is too narrow, and the flux is affected when the lining mesh layer 200 is too wide.

The mesh liner layer 200 includes a first mesh liner layer 210 and a second mesh liner layer 220, the support layer 110, the first mesh liner layer 210 and the second mesh liner layer 220 are sequentially arranged, the porosity is sequentially increased, the smaller the porosity is, the larger the pore diameter is, the size of the pore diameter of the woven mesh is in direct proportion to the strength, the layer-by-layer encryption ensures the strength of the support layer 110, the density of metal wires is increased, and the welding forming and the welding quality (enough welding water can be generated during welding to timely fill a welding seam) are ensured. The mesh number of the first backing layer is 40 to 80 mesh, preferably 50 mesh, and the mesh number of the second backing layer is 80 to 120 mesh, preferably 80 mesh.

According to the utility model, the lining net is added on the periphery of the flaky sintering net, so that the thickness of the periphery of the sintering net is increased, the density of metal wires on the periphery of the sintering net is increased, and the metal net at the welding position is melted to generate enough welding water to fill the welding seam during welding, so that the welding quality is ensured. The lining net is added at the positions needing to be welded around the sintering net, so that welding forming can be guaranteed, the aperture of the supporting layer in the prior art can be increased, the wire diameter of the metal wires for weaving the metal net is increased when the aperture is increased, so that the strength of the metal net is increased, the strength of the filter element is guaranteed, and the flow rate is increased when the aperture is increased, so that the strength of the filter element is guaranteed, and meanwhile, the flow rate is improved. In addition, the strength of the supporting layer is increased, so that the porosity of the filtering layer can be increased to ensure the filtering precision of the filter element (the same pore size is increased, the larger the porosity is, the thinner the metal wires of the woven mesh are, the lower the strength of the woven mesh is, and the strength of the filtering layer can be relatively reduced due to the increased strength of the supporting layer of the filter element, so that the filtering precision is ensured while the flow rate is improved. In conclusion, the high-flux sintered net filter element provided by the utility model can improve the flux while meeting the strength and the filtering precision.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The high-flux sintered net filter element comprises a filter tube which is formed by rolling a sintered net and then welding longitudinal seams, wherein the sintered net is sheet-shaped which is formed by laminating, arranging and pressing a plurality of layers of metal nets, and is characterized in that a lining net layer is arranged at the peripheral edge between two adjacent layers of metal nets in the plurality of layers of metal nets.

2. The high flux sintered mesh filter cartridge of claim 1, wherein the liner mesh layer has a width of 4mm to 6mm.

3. The high-flux sintered mesh filter cartridge of claim 1 or 2, wherein the multi-layered metal mesh comprises a support layer, a shunt layer, a filter layer and a protective layer arranged in sequence, the support layer being an orifice plate, the liner mesh layer being disposed between the support layer and the shunt layer.

4. A high flux sintered mesh filter cartridge as claimed in claim 3, in which the backing mesh layers comprise a first backing mesh layer and a second backing mesh layer.

5. The high-flux sintered mesh filter cartridge of claim 4, wherein the support layer, the first liner mesh layer, and the second liner mesh layer are sequentially aligned and the porosity is sequentially increased.

6. The high flux sintered mesh filter cartridge of claim 5, wherein the mesh size of the first liner mesh layer is 40-80 mesh and the mesh size of the second liner mesh layer is 80-120 mesh.