Improved coupling for pump

The utility model discloses an improved pump coupler which comprises a pair of coupler half bodies which are symmetrically arranged, a semi-cylindrical motor shaft hole is formed in the top end of each coupler half body, a semi-cylindrical pump shaft hole is formed in the bottom end of each coupler half body, and bosses protruding towards the axis are arranged on the two sides of each semi-cylindrical motor shaft hole and the two sides of each semi-cylindrical pump shaft hole respectively. A transition groove is formed in the position, between the semi-cylindrical motor shaft hole and the semi-cylindrical pump shaft hole, of the coupler half body, and fixing installation holes are formed in the positions, on the two sides of the semi-cylindrical motor shaft hole and the two sides of the semi-cylindrical pump shaft hole, of the coupler half body. The utility model has the advantages of cost saving, convenience in processing, high installation precision, small unbalance and the like. 本实用新型公开了一种改进的泵用联轴器，包括一对对称设置