Efficient air suction and dust removal device

The invention belongs to the technical field of fabric processing dust removal equipment, and particularly relates to an efficient air suction dust removal device which comprises an air suction cover fixedly connected to a base, a circular knife is mounted on a driving shaft on the inner side of the air suction cover, and a flat shear knife matched with the circular knife is arranged on one side, located on the circular knife, of the air suction cover. The flat shear knife is installed on a flat knife rest on one side of the base, a cavity pressure adjusting component is installed at the position, close to an air inlet, of the air suction cover and comprises a lubricating felt plate, a locking positioning plate and a cavity pressure adjusting plate, the locking positioning plate is fixedly connected to the air suction cover, and a felt support is rotationally connected to a rotating shaft of the locking positioning plate. A middle air outlet type adjustable combined structure is adopted, the problems of air s