Pipeline pump impeller mounting assembly

The utility model relates to the technical field of pipeline pump equipment, and provides a pipeline pump impeller installation assembly which comprises an impeller pump, a motor and an impeller, the output end of the motor is connected with a main shaft extending into the impeller pump and connected with a connecting column on the impeller in a clamped mode to drive the impeller to rotate and be matched, and an installation ring is further arranged between the main shaft and the connecting column. A plurality of flanges which are sequentially connected end to end are arranged on the outer wall of the mounting ring, a plurality of mounting grooves are formed in the inner wall of the mounting ring, and the flanges and the mounting grooves are matched with the connecting column and the main shaft respectively. The mounting ring is arranged between the main shaft and the impeller and connected with the main shaft and the impeller respectively, and a buffer layer is provided between the mounting ring and the main