Anti-blocking pneumatic ash conveying device

The utility model relates to the technical field of pneumatic ash conveying, and discloses an anti-blocking pneumatic ash conveying device which comprises a ventilation pipeline, a motor is fixedly installed on the outer wall of the ventilation pipeline, the output end of the motor is fixedly connected with a reciprocating lead screw, and the reciprocating lead screw penetrates through a sliding plate and is in threaded connection with the sliding plate. The sliding plate is slidably connected with the inner wall of the ventilation pipeline, a group of semicircular grooves penetrate through the outer wall of the sliding plate, main filter screens are fixedly mounted in the semicircular grooves, through grooves are formed in the two sides of the bottom end of the ventilation pipeline, guide grooves are formed in the inner walls of the through grooves, and movable plates are slidably connected to the inner walls of the guide grooves; a plurality of springs are fixedly connected between the end of the movable pl