Pump case simple and accurate positioning structure

The utility model discloses a simple and accurate positioning structure of a pump case. The utility model belongs to the technical field of slurry pumps. The device comprises a fixing bolt and a nut in threaded connection with the fixing bolt, the pump shell comprises a pump body and a pump cover located in front of the pump body. A pump front lining is fixed on the inner wall of the pump cover; apump rear lining is fixed on the inner wall of the pump body; the outer edge of the pump rear lining and the outer edge of the pump front lining are clamped between the pump body and the pump cover,the pump body and the pump cover are fixedly connected through matching of fixing bolts and nuts, the fixing bolts are sleeved with positioning washers, and the positioning washers are located betweenthe pump body and the pump cover and located on the outer side of the pump front lining and the outer side of the pump rear lining. The distance between the pump body and the pump cover can be accurately controlled, it is ensu