Sealing device for pulse bag type dust collector with air box

The utility model relates to a pulse bag type dust collection device with an air box, and particularly relates to a sealing device for a pulse bag type dust collector with an air box. The sealing device comprises the pulse bag type dust collector with the air box, wherein the dust collector is provided with a valve plate and a patterned plate. The sealing device is characterized in that a sealing ring is fixedly arranged between the valve plate and the patterned plate; the sealing ring is adhered to the patterned plate; the sealing ring is made of asbestos, rubber and other materials; the sealing ring is annular; the inner diameter of the sealing ring is 1mm to 2mm greater than the diameter of single side of a valve port; the outer diameter of the sealing ring is 1mm to 2mm smaller than the diameter of single side of the valve plate. The sealing device is designed aiming at air leakage and bad sealing of an inlet and an outlet of the pulse bag type dust collector with the air box. The sealing device is mainly characterized in that the sealing device is additionally arranged between each valve port and the valve plate, the air impermeability of the air inlet and the air outlet is improved, and the air leakage rate of the dust collector is reduced, so that the performance of the dust collector is ensured, and the device has the advantages of simple structure, economy and practicability, high reliability and the like.