CN101816857B

CN101816857B - Double-layer filter cloth woven from basalt fibers and glass fibers

Info

Publication number: CN101816857B
Application number: CN200910235972A
Authority: CN
Inventors: 宋朋泽
Original assignee: 宋朋泽
Current assignee: Liaoning Xin Hongyuan environmental protection material Co. Ltd.
Priority date: 2009-11-03
Filing date: 2009-11-03
Publication date: 2012-08-29
Anticipated expiration: 2029-11-03
Also published as: CN101816857A

Abstract

The invention discloses a double-layer filter cloth woven from basalt fibers and glass fibers, which comprises warp and double-layer weft, wherein the double-layer weft is divided into inner-layer weft and surface-layer weft, and the inner-layer weft is mainly composed of high-temperature resistant fibers. The filter cloth obviously enhances the strength and temperature resistance and prolongs the service life. Preferably, the yarn number of the inner-layer weft is smaller than that of the surface-layer weft, so that trapezoidal pores can form in the filter cloth and the filter cloth has favorable filtration effect.

Description

The double-layer filter cloth of basalt fibre and fiberglass weaving

Technical field

The present invention relates to a kind of double-layer filter cloth, especially a kind of double-layer filter cloth that is applied to high-temperature operation.

Background technology

At present; Heatproof at chimneys such as iron and steel, cement, power plant is crossed in the filter cloth of dust-removal cloth-bag; All be to form by single glass fibre is woven, this filter cloth has two serious shortcomings: 1. because the heat resistance of glass fibre is general, filter effect is also not ideal enough; Work under 150～300 ℃ environment, service life is shorter; 2. owing to only adopt the single glass fiber, can't form the footpath gradient-porosity, relatively poor to the fine particle filter effect in the flue dust, dust removing effects is not ideal enough, is difficult to accomplish the effective filtration to flue dust.

Summary of the invention

The objective of the invention is to overcome the shortcoming of prior art, a kind of good filtration effect is provided, heat resistance is strong, long service life, lower-cost high-performance double-layer filter cloth and method for weaving thereof.This filter cloth comprises warp thread, top layer weft yarn and nexine weft yarn, and the nexine weft yarn mainly is made up of high-temperature fibre.Wherein the proportion of high-temperature fibre is preferably in more than 70%.

Preferably, the nexine weft yarn mainly is made up of basalt fibre or is made up of the composite covered yarn that comprises basalt fibre.

Preferably, the warp thread of filter cloth and top layer weft yarn are made up of the mixed yarn of glass fibre or glass fibre and other fiber.The proportion of the glass fibre of warp thread and top layer weft yarn accounts for more than 70%.

Preferably, the radical of top layer weft yarn and nexine weft yarn was formed by 1: 1.

Preferably, the weft yarn of forming by basalt fibre or comprise the nexine tissue of the weft weaving filter cloth that the composite covered yarn of basalt fibre constitutes, and less relatively yarn or the buiky yarn of employing line density; Adopt the relatively large yarn of line density; This can make the nexine hole of filter cloth relatively large, the top layer hole of filter cloth is less relatively, and the hole of filter cloth is trapezoidal state, during filtration; Nexine is big slightly because of hole; At first filter in the flue dust or bigger particle in the dust, the top layer because of hole relatively than I to nexine filtering once more of filtering not than granule, reach filter effect preferably.

The present invention has given full play to the advantage that basalt fibre is corrosion-resistant, high temperature resistant, intensity is good, can be higher at the sulfur-bearing of steel mill, steam power plant, temperature is to use in the filtrating smoke dust below 350 ℃.Basalt fibre is 150～250 ℃ of whens work, and its intensity does not only descend, and improves 20～30% characteristic on the contrary, can make 1.5～2 times that bring up to the single glass fiber filter cloth in service life of the filter cloth of under this environment, working.And filter effect, intensity and service life all be significantly increased, and this structure is lower than all adopting the basalt fibre costs.

The method for weaving of double-layer filter cloth of the present invention is, on the top layer weft yarn three once pile warp yarn 1 weave; Three times pile warp yarns 1 are weaved on the nexine weft yarn one, 2 pairs of warp thread 1 of its mesexine weft yarn following around and the going up around being separated by a warp thread of 3 pairs of warp thread 1 of nexine weft yarn, the adjacent top layer weft yarn warp thread that staggers successively, the adjacent nexine weft yarn warp thread that also staggers successively.

The double-layer filter cloth of processing through this method for weaving not only can form good gradient, and filter effect is good, and can also improve the intensity of filter cloth, improves its service life.

Description of drawings

Fig. 1 be an embodiment of the present invention along the broadwise generalized section;

Fig. 2 is the organization chart of an embodiment of the present invention.

The specific embodiment

Below in conjunction with accompanying drawing the present invention is further described.

As shown in Figure 1; The woven double-layer filter cloth of this basalt fibre and glass is intertwined to form double-decker by warp thread 1, top layer weft yarn 2 and nexine weft yarn 3; Warp thread 1 all is made up of glass fibers yarn dimension; Top layer weft yarn 2 is by also being made up of glass fiber yarn, and nexine weft yarn 3 is made up of the line density basalt fibre yarn lower than glass fiber yarn wire size number.Method for weaving be on the top layer weft yarn three once pile warp yarn 1 weave; Three times pile warp yarns 1 are weaved on the nexine weft yarn one, 2 pairs of warp thread 1 of its mesexine weft yarn following around and the going up around being separated by a warp thread of 3 pairs of warp thread 1 of nexine weft yarn, the adjacent top layer weft yarn warp thread that staggers successively, the adjacent nexine weft yarn warp thread that also staggers successively.Top layer weft yarn 2 is 1: 1 with the radical ratio of nexine weft yarn 3.

Shown in the organization chart of Fig. 2,

warp thread

1,2,3,4,5,6,7,8 is a glass fibre;

Weft yarn

1,2,3,4 is a glass fibre, forms the top layer of filter cloth; Weft yarn one, two, three, four is a basalt fibre, forms the nexine of filter cloth.

Claims

1. a high-temperature resistant double-layer filter cloth comprises warp thread, top layer weft yarn and nexine weft yarn, and the nexine weft yarn mainly is made up of high-temperature fibre;

Said double-layer filter cloth is made through following technology: pile warp weaving yarns once on the top layer weft yarn three; Three times pile warp weaving yarns on the nexine weft yarn one, its mesexine weft yarn to warp thread following around and the nexine weft yarn to the going up around being separated by a warp thread of warp thread, the adjacent top layer weft yarn warp thread that staggers successively, the adjacent nexine weft yarn warp thread that also staggers successively;

Said warp thread all is made up of glass fiber yarn, and the top layer weft yarn also is made up of glass fiber yarn, and the nexine weft yarn is made up of the line density basalt fibre yarn lower than glass fiber yarn wire size number; The top layer weft yarn is 1: 1 with the radical ratio of nexine weft yarn.

2. high-temperature resistant double-layer filter cloth according to claim 1 is characterized in that: the proportion of the high-temperature fibre of described formation nexine weft yarn is more than 70wt%.