Pneumatic off-line service valve for bag type dust collector

The utility model relates to a pneumatic off-line service valve for a bag filter, which comprises a valve body, a valve shaft, a valve plate, a bearing seat, a bearing cover, a rocking arm, a push rod, a connecting fork, a pin shaft, a pneumatic cylinder, a connecting seat and a fixing seat. A flange is arranged on the valve body. The bearing seat is fixed on the flange. The valve plate is fixed on a valve shaft. The valve shaft is positioned at the symmetric center of the interior of the valve body, both of ends penetrate through the flange on the valve body, and one end is connected with the rocking arm. The rocking arm, the connecting fork, the push rod and the pneumatic cylinder are connected together in sequence. The push rod and the pneumatic cylinder form an electromechanical integrated full-sealing structure. When the push rod is extended, the rocking arm is driven to do circumferential motion, so the valve plate can be fast closed, and the problems of the poor air lock property, complicated operation