Novel double-shell multi-stage pump structure

The utility model discloses a novel double-shell multistage pump structure, which relates to the technical field of double-shell multistage pumps, and comprises a motor, the driving end of the motor is fixedly connected with a main shaft, the lower wall surface of the motor is fixedly connected with a motor frame on the outer side of the main shaft, the lower end of the motor frame is fixedly connected with a mounting block, the main shaft is rotatably connected in the mounting block, and the main shaft is rotatably connected in the mounting block. A connecting cylinder is fixedly connected to the lower wall face of the mounting block, an upper pump cover is fixedly connected to the lower end of the connecting cylinder, an outer shell is mounted on the lower wall face of the upper pump cover, a lower pump cover is mounted on the lower wall face of the outer shell, the lower pump cover is fixedly connected with the upper pump cover through a plurality of bolts, and a plurality of inner shells are fixedly conne