Mine-used pleat type metal screen filter cylinder

A metal mesh and pleated technology, which is applied in the field of mine pleated metal mesh filter cartridges, can solve the problems that the filter cloth cannot achieve the flame retardant effect, the flame retardant and antistatic properties are attenuated, and the dust removal efficiency of the dust collector is low, and achieves excellent performance. Antistatic performance and explosion-proof performance, prolonging service life, and preventing the effect of reducing the filter area

Active Publication Date: 2016-04-20

CHINA UNIV OF MINING & TECH

8 Cites 4 Cited by

AI-Extracted Technical Summary

Problems solved by technology

Although the dust removal efficiency of the dust collector imported from Germany is as high as 99.997%, the filter cloth used cannot achieve a good flame retardant effect, and some filter screens have been burned through; domestic dry dust collector filter cartridges generally use polyester fiber materials , although this material can achieve flame retardant and antistatic properties well, the dust removal efficiency of...

Abstract

The invention discloses a mine-used pleat type metal screen filter cylinder, which comprises a filter screen (1), a mounting cover (2) and a sealing cover (3), wherein the mounting cover (2) and the sealing cover (3) are respectively arranged at the top and the bottom of the filter screen (1), a sealing gasket (4) is arranged at the upper part of the mounting cover (2), and the filter screen (1) and the mounting cover (2) are made of metal with good electrical conductivity and good wear resistance; the filter screen (1) is in a three-layer metal screen composite structure of an outer-layer intermediate screen (11), a middle-layer thick screen (12) and an inner-layer thin screen (13); the filtering surface of the filter screen (1) is in a deep pleat (15)-and-shallow pleat (14) trapezoid pleat type structure; and the outer surface of the sealing gasket (4) is wrapped with a layer of electrical conduction screen (5). The mine-used pleat type metal screen filter cylinder has the characteristics that the service cycle is longer, the inflaming retarding property and the antistatic property are higher, the dedusting efficiency is high, the safety explosive-proof grade is higher, etc.

Application Domain

Dispersed particle filtrationMembrane filters

Technology Topic

Type metalComposite structure +6

Image

Examples

Experimental program(1)

Example Embodiment

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0020] like Figure 1 to Figure 3 As shown, a mining pleated metal mesh filter cartridge includes a filter screen 1, an installation cover 2, and a sealing cover 3, and the installation cover 2 and the sealing cover 3 are respectively installed on the top and bottom of the filter screen 1, and the installation A gasket 4 is installed on the top of the cover 2,

[0021] The material of the filter screen 1 and the installation cover 2 is a metal with good conductivity and wear resistance; the filter screen 1 is a three-layer metal mesh composite of the outer layer middle mesh 11, the middle layer coarse mesh 12 and the inner layer fine mesh 13. structure; the filter surface of the filter screen 1 is a trapezoidal pleated structure with deep pleats 15 and shallow pleats 14; the outer surface of the sealing gasket 4 is wrapped with a layer of conductive mesh 5.

[0022] In order to achieve a better dust removal effect for the filter screen, preferably, the middle screen 11 is a metal mesh of 500-900 mesh, the coarse mesh 12 is a metal mesh of 100-300 mesh, and the fine mesh 13 is a metal mesh of 1500-3000 mesh; preferably The arc length between the adjacent deep pleats 15 or the adjacent shallow pleats 14 along the outer circle direction of the filter surface of the filter screen 1 is 15% to 40% of the radius of the outer circle of the filter screen 1; preferably, the The depth of the shallow pleats 14 is 1/3~2/3 of the deep pleats 15.

[0023] In order to obtain better electrical conductivity of the conductive mesh 5 , the conductive mesh 5 is formed by parallel and perpendicular intersections of flexible metal wires, and the distance between the parallel flexible metal wires is less than half the thickness of the gasket 4 .

[0024] like Figure 4 Shown is the cross-sectional schematic view of the triangular pleated filter cartridge in the prior art. Its outer diameter is 144mm, inner diameter is 80mm, and the number of pleats is 20. The length of the measured filtering part is 1320mm; the present invention provides the same outer diameter, For the filter cartridge with inner diameter and number of pleats, the measured length of the cross-sectional filter part is 2238mm. Therefore, under the same outer diameter, inner diameter, number of pleats and height of the filter cartridge, the filtering area of the filter cartridge provided by the present invention is the same as that of ordinary triangular pleats. 1.70 times the filter area of the filter cartridge.

[0025] When the same amount of dust is collected, the thickness of the dust collected by the present invention is 1mm. After the dust is deposited, the filter area is reduced due to the overlap of the turning area of the filter screen, and the cross-sectional filter length is changed from the original 2238mm to 2228mm, that is, the filter area is reduced by 0.45 %; and in the prior art, the dust thickness collected by the triangular pleated filter cartridge has reached 1.7mm, and the cross-sectional filter length has changed from the original 1320mm to 1124.7mm, that is, the filter area has decreased by 14.8%. At this time, the filter provided by the present invention The filter area of the cartridge is 1.98 times that of the triangular pleated filter cartridge.

PUM

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