The application relates to a concrete mixing
plant dust falling device, belonging to the field of concrete production equipment, which is arranged in a stock bin, one side wall of the stock bin is in an open state, the dust falling device comprises a
water pipe fixedly connected to the top of the stock bin, a
branch pipe is vertically and fixedly connected to the
water pipe, a box body is threadedly connected to the
branch pipe, a water outlet of the
branch pipe is located in the box body, a plurality of through holes penetrating through the side wall of the box body are formed in the side wall of the box body, a plugging
assembly for plugging the through holes is arranged on the branch pipe, and a driving
assembly for controlling the work of the plugging
assembly and driving the rotation of the box body is arranged in the stock bin. The application has the effect of better inhibiting dust raising in the stock bin.