Integral dust-removal filtering bag with internal and external filtering double-bag sleeve structure

Abstract

The invention relates to an integral dust-removal filtering bag with an internal and external filtering double-bag sleeve structure. The dust-removal filtering bag comprises filter bags and a cage skeleton supporting the filtering bags. The dust-removal filtering bag is characterized in that the cage skeleton is composed of an inner bag cage skeleton (2) and an outer bag cage skeleton (1); the upper end and the lower end of the outer bag cage skeleton are respectively provided with an upper positioning mounting plate (13) and a lower positioning mounting plate (10); the filtering bags includes an inner filtering bag (8) and an outer filtering bag (7); the inner filtering bag (8) and the outer filtering bag (10) are assembled into an integral structure through the upper positioning mounting plate (13) and the lower positioning mounting plate (10); the inner filtering bag (8) is parallel with the outer filtering bag (7), and the upper part of the inner filtering bag (8) is lower than the outer filtering bag while the bottom part of the inner filtering bag (8) is as high as the bottom part of the outer filtering bag (7); and the inner filtering bag and the inner bag cage skeleton (2), the outer filtering bag (7) and the outer bag cage skeleton (1) are designed to be circular and rectangular, also can be square. The filtering bag has the advantages of reasonable technical structure, high efficiency and small device volume, the cost is saved; especially, since the upper part of the inner filtering bag (8) is lower than the outer filtering bag (7), under the condition of ensuring the increase of filtering surface area of the inner filtering bag (8), the filtering bag has the characteristics of saving space and being convenient for removing dust.

Description

1. Technical field: [0001] The invention relates to the technical field of environmental protection, in particular to an integrated dust-removing filter bag with inner and outer filter double-bag sleeves for purifying dust-containing gas. 2. Background technology: [0002] At present, the known methods of purifying dust-laden gas through filter bags are usually inner filter type and outer filter type and are used separately, the filter area is limited, the equipment occupies a large area, and the cost is high. In order to improve the efficiency of filtration and purification, most of them adopt the method of increasing the filter area of ​​the filter bag. Generally, there are two methods: one is to increase the diameter of the filter bag; the other is to lengthen the length of the filter bag. The area is large and the cost is high. Therefore, how to overcome the limited filtration area caused by the separate use of the existing internal filter and external filter, the equipm...

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Problems solved by technology

[0003] The purpose of the present invention is to propose a method to solve the above-mentioned problems in view of the situation of the prior art, aiming at the limitation of the filtration area caused by the separate use of the existing inner filter type and the outer filter type, the equipment occupies a large area, and the cost is high To solve the problem, the design provides a kind of inner and outer filter double-bag sleeve with simple structure, which is combined with inner filter type and outer filter type double-bag sleeve to filter, increase the filtration area, save equipment space, small equipment volume, and save costs. Integrated dust filter bag

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