The invention discloses a
cutting type auxiliary dredging device for a drainage
pipe, and relates to the technical field of drainage pipelines. The
cutting type auxiliary dredging device for the drainage
pipe comprises an outer shell and an inner
pipe coaxially and fixedly connected in the outer shell, wherein the two ends of the inner pipe are both in sealed communication with the drainage pipe, and a cleaning ring is coaxially and rotatably connected in the inner pipe and is in sliding connection in the axial direction; a plurality of
cutting knives are connected to the inner circumferential side of the cleaning ring in the radial direction, a control ring is connected to the outer circumferential side of the inner pipe in a threaded mode, and a plurality of magnetic blocks are embedded in the control ring. According to the cutting type auxiliary dredging device for the drainage pipe, flowing
sewage forms an
impact effect on the cleaning ring and the cutting knives in the inner pipe in the normal drainage process, the cleaning ring moves along the pipe wall of the inner wall, and the control ring in threaded connection with the outer
peripheral side of the inner pipe is subjected to counter-acting force of magnetic attraction to the cleaning ring and spirally rotates along the outer
peripheral side of the inner pipe when the cleaning ring moves, so that the cleaning ring is magnetically driven to rotate in reverse, the cutting knives of the cleaning ring forms a spiral cutting effect on waste, and the crushing effect on the waste is improved.