A kind of preparation method of dust filter bag

Abstract

The invention discloses a method for preparing a dust removal filter bag. The method comprises the steps of preparing a bag body, preparing a bag mouth and preparing a bag bottom and specifically comprises the following steps of: 1, preparing the bag body through ultrasonic welding; 2, preparing the bag mouth in a mode of sewing three layers of filter cloth and embedding a packing into the bag mouth; and 3, preparing the bag bottom in a mode of turning over the bag body and embedding the edge of the bag bottom. By the method for preparing the dust removal filter bag, the bag mouth is not easy to damage, and the service life is long; the cloth eyelets are avoided on the connection part of the bag body, so that the connection part of the bag body can bear high-pressure air flow; and the connection part of the bag bottom does not leak dust so as to bear high-pressure air flow.

Description

technical field [0001] The invention relates to a preparation method of a dust removal filter bag, in particular to a preparation method of a bag opening, a bag body and a bag bottom of the dust removal filter bag. Background technique [0002] At present, the preparation method of the bag mouth, bag body and bag bottom of the dust filter bag is to use a sewing machine to sew and connect the filter cloth. Specifically, for the bag body of the dust filter bag, the filter cloth is first curled into a cylindrical shape, and the two sides that fit together are directly sewed together. For the bag opening of the dust filter bag, firstly fold the upper part of the bag body of the dust filter bag outward to form the upper folded edge, then place the expansion ring between the upper folded edge and the bag body, and finally use a sewing machine to sew the upper The lower part of the folded edge is sewn onto the bag so that the expansion loop is wrapped in the mouth of the bag. For...

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Problems solved by technology

The above-mentioned sewing method has many disadvantages: the bag mouth of the dust filter bag adopts this sewing method, because the air flow washes the dust filter bag frequently, the expansion ring is placed in the bag mouth, the expansion ring and the bag mouth are fitted, the bag mouth and the bag mouth There are only two layers of filter cloth at the seam of the bag body, and the filter bag mouth is continuously washed by the pulse jet air flow, so the service life is short

The bottom of the dust filter bag adopts this sewing method, because there will be cloth holes at the junction of the bag bottom and the bag body, which is easy to leak dust, especially when the high-pressure airflow washes the dust filter bag, the bottom of the bag is easy to fall off

Similarly, if the bag body of the dust filter bag adopts this sewing method, there will be cloth holes at the joint of the bag body, which is easy to leak dust, especially when the high-pressure airflow washes the dust filter bag, the joint of the bag body is easy to crack

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