Built-in cone type filter bag

Abstract

The invention relates to a built-in cone type filter bag which comprises a bag mouth, a straight pocket and an outer drawing strip, wherein the outer drawing strip is sewed at the inner side of the bag mouth, the bag mouth is sewed at one end of the straight pocket, the straight pocket is an empty opening without a bottom, a conical bag is arranged in the straight pocket, the empty opening without a bottom is arranged at the lower end of the conical bag, the lower end of the straight pocket is sewed with the edge of the heavy caliber end of the conical bag, the top of the conical bag is sewed with a conical bag buckle, and the conical bag buckle is sewed with an inner drawing strip. The invention solves the problem that the filtering area is increased on the basis without changing the appearance of the original filter bag, and simultaneously solves the problem of reducing the compressed gas quantity required for ash removal; and the invention cancels the bag bottom, increases the conical bag and utilizes the empty opening formed after the bag bottom is eliminated as the inlet for the dusty gas to enter in the conical bag, thereby not only increasing the filtering area, but also reducing the volume of filling the compressed gas during the ash removal, reducing the manufacturing cost of the device as well as the occupied land due to the increase of the appearance of the device and meanwhile, and reducing the operating cost as well.

Description

technical field [0001] The invention relates to a filter bag, in particular to a cone-embedded filter bag in a bag filter. Background technique [0002] The inner cone filter bag is a new type of filter bag. Its function is to use the outer wall of the filter bag and the inner wall of the cone embedded in the filter bag to filter, increase the filter area of ​​the filter bag, improve the filtration capacity, and reduce the filter bag size. The internal volume reduces the volume of compressed gas during dust cleaning. At present, the common filter bags are cylindrical or rectangular filter bags, and their structures are all cylindrical with one end open and the side wall and bottom closed, so the filter area of ​​the filter bag is the sum of the area of ​​the side wall and the area of ​​the bottom. When working, the dust-laden gas enters the inside of the filter bag from the outside to the inside through the side wall and bottom of the filter bag, and the dust hangs on the o...

AI Technical Summary

Problems solved by technology

When several filter bags are combined into a bag filter to work, if you want to increase the filtration area, you must add more filter bags, which needs to increase the shape of the bag filter, increase the floor space, and increase the cost of the equipment

In addition, the compressed gas must be filled with the entire inner cavity of the filter bag to achieve dust removal, so the amount of compressed gas required for dust removal is large, and the operating cost is high

The current methods to solve this problem are all focused on changing the material of the filter bag, lengthening the filter bag, reducing the pressure of the compressed gas and cleaning the dust. Although these methods can improve the filtration capacity and cleaning efficiency to a certain extent, they cannot change the reason. The problems caused by the shape of the equipment can not avoid the problem of operating costs caused by the large amount of compressed gas that needs to be cleaned, and at the same time increase the investment

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