Municipal garden filtering drainage device

The invention belongs to the technical field of municipal drainage equipment, and particularly relates to a municipal garden filtering drainage device. The municipal garden filtering drainage device comprises a pipe body wide at the top and narrow at the bottom and a well lid mechanism installed on the pipe body, wherein a motor support is arranged in the pipe body, a driving motor is connected into the motor support, the driving motor is engaged with a worm wheel, a mounting rod is fixed in an inner ring of the worm wheel, a transmission rod is connected to the top end of the mounting rod, aplurality of crushing blades are arranged on the two sides of the transmission rod at equal intervals, a lead screw is fixedly connected to the bottom end of the mounting rod, a movable block is connected to the exterior of the lead screw in a threaded sleeving mode, mounting plates are hinged to the two sides of the movable block correspondingly, the mounting plates are provided with mounting openings, the inner walls of