Factors that influence the nature of the woven filter cloth to be blocked
1. The original cloth filter
As we all know, the main raw material woven woven cloth is mainly synthetic fibers, which in addition to the original use of cotton more solid, but also the appearance of lubrication, low moisture absorption, unloading rate, easy to plug advantages. Thus, although cotton may be cheaper than synthetic fibers, it is not commonly used except under special conditions.
2. Woven filter cloth pore structure
The fibers used in woven filter cloth are basically divided into monofilaments and multifilaments, which are subdivided into filaments and short filaments. The main or fundamental weaving methods are: plain weave, twill and satin and some modifications on the base to reduce the aperture and to improve the fabric strength.
At present, the most commonly used is multifilament fibers. There are generally four kinds of pores or holes in a filter cloth woven with such fibers; those within or between the fibers, between fibers and between yarns, Some holes are blind holes and some through holes; the first two types of aperture is generally 0.05 to 0.6 microns, the smaller as long as 1.0 to 100 nm. The proportion of blind holes is larger, but the proportion of total pores is very small, so we focus on the latter two types of media blocking is mainly caused by these two types of pores. Transverse pore size between fibers within the yarn is generally 0.2 to 200 microns, most of the 1.0 to 60 microns, most of the pores are through; horizontal pore size between the yarn within the yarn is generally 5.0 to 1000 microns, are through hole.
There are not many and very different data regarding the proportions of these two pores. For example, as determined by Grace, the porosity of the woven filter cloth is less than 10 microns with 30% to 50% of the pore size. He concludes that this partial pore may be within the yarn Fiber interspaces, that is, if the pores or holes in the fiber are neglected, 30% to 50% of the porosity in the fabric comes from between the fibers; we calculate both plain and twill filter fabrics with identical yarn twist, The plain weaved fabric had a total porosity of 27.8% and a twill of 45.3%; the plain yarns had 20.79% of the total porosity and 79.21% of the interfiber porosity; the interlaminar porosity of the twill fabric Accounting for 54.66% of the total porosity, interfiber porosity accounted for 45.34%; that weaving method on the proportion of two types of pores have a great impact. Twill weave a few, compared to the larger pores between the yarn. Obviously, the pores between the fibers are inevitable
More easy to form sandwich filling, mosaic, will be more difficult to clean, from this point of view, twill better than plain.
Pore size
We have stopped elaborating on the pore size of the filter cloth media and its blocked relationship, demonstrating that reducing the pore size of the medium will help to avoid clogging here.
Braided filter cloth usually have a post-disposal process, including calendering, heat setting, etc., filter press cloth after calendering, its aperture will be reduced, and reduce the role of media pore size similar, of course, to make it less air permeability , For example, according to the material, the air permeability of the filter cloth after rolling reduced from 112 1 / m2.s to 51 1 / m3.s, but it helps to reduce the infarction!
浙江天台丰顿滤料有限公司是一家专业从事：液体过滤袋、工业滤布、滤布、滤袋、除尘袋生产销售的滤布厂家，多年来在液体过滤袋、滤袋、工业滤布、除尘袋生产上积累了丰富的经验和领先的技术。
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