A dust removal filter bag

Abstract

There are a large number of pinholes and cloth seams at the bag opening of existing dust filter bags due to production. These pinholes and cloth seams become the main dust discharge channels, reducing the filtering performance of the dust filter bag. The present invention discloses a dust filter bag, the bag opening is formed by using the bag opening cloth and the end of the bag body filter cloth to wrap the expansion ring together, or the end of the bag body filter cloth of the flat bag is turned inward or outward at least twice to wrap the expansion ring, or the pleated bag body filter cloth is turned inward or outward to wrap the expansion ring. The problem of pinholes and cloth seams dust discharge channels at the bag opening is completely eliminated, and the filtering performance of the dust filter bag is effectively improved.

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