Solid impurity crushing treatment device for sewage treatment

The invention relates to the technical field of sewage treatment, in particular to a solid impurity crushing treatment device for sewage treatment, which comprises a cleaning bin and an air pump, a sliding groove and a screw hole are formed in the outer surface of the cleaning bin, a sliding rod is slidably connected to the inner side of the sliding groove, and an air bag is fixedly connected to one end, away from the sliding groove, of the sliding rod. And a screw rod is connected to the surface of the connecting plate through threads in a penetrating manner. Under the action of a second abutting plate and a first abutting plate and the action of a second telescopic spring and a first telescopic spring, the first abutting plate and the second abutting plate are connected with the water inlet in an abutting mode, the water inlet amount of the water inlet during adjustment is reduced, impurities are prevented from entering the cleaning bin, and the treatment effect on sewage solid impurities is improved; and u