The dust removal frame is the "ribs" of the filter bag, it should be light and easy to install and maintain. The quality of the dust removal frame directly affects the filtering state and service life of the filter bag. The dust removal frame has sufficient strength, verticality, and dimensional accuracy, with all weld points being very strong, without any loose, incomplete, or missing welds; the contact surface between the dust collector frame and the filter bag is smooth, and the surface of the dust filter bag frame is electroplated or painted.