The utility model relates to the technical field of water pumps, and discloses a double-
impeller full tubular pump, which comprises a water suction port, a motor casing, a
motor shaft, a guide vane body, impellers, an
impeller sleeve and a bearing sleeve, the outer side of the water suction port is connected with the outer side of the front end of the motor casing through a
flange, and the outer side of the rear end of the motor casing is connected with the outer side of the front end of the guide vane body through a
flange. A front bearing chamber is fixed to the center of the water suction port through a plurality of connecting plates, a rear bearing chamber is fixed to the center of the guide vane body through a plurality of guide vanes, a
roller bearing and a contact bearing are sequentially fixed in the front bearing chamber, a bearing
front cover is fixed to the front end of the front bearing chamber, a contact bearing is fixed in the rear bearing chamber, and a bearing rear cover is fixed to the rear end of the rear bearing chamber. The front end of the
motor shaft is installed in the
roller bearing and the contact bearing in the front bearing chamber, and the rear end of the
motor shaft is installed in the contact bearing in the rear bearing chamber. Drainage efficiency of the water pump can be improved, good cooling of the driving
assembly is guaranteed, and the water pump is simple in overall structure and good in stability.