Surface ash film removing equipment for horizontal-flow sedimentation tank

The utility model relates to the technical field of horizontal-flow sedimentation tanks, in particular to a horizontal-flow sedimentation tank surface ash film removing device which comprises a sedimentation tank body, a water inlet tank fixedly arranged at the upper end of the left wall of the sedimentation tank body, a water outlet tank fixedly arranged at the upper end of the right wall of the sedimentation tank body, an impeller arranged in the middle of the upper end of the water inlet tank and the middle of the upper end of the water outlet tank, and a rotating shaft sleeved with the middle of the impeller. The rotating shaft is sleeved with two supports in a front-back symmetrical structure, and the front end and the rear end of the rotating shaft are sleeved with gears A. Through rotation of the reciprocating lead screw A and the reciprocating lead screw B, the sliding block synchronously slides left and right along the reciprocating lead screw A and the reciprocating lead screw B, at the moment, the