Vertical multi-stage pump

The utility model discloses a vertical multi-stage pump, which relates to the technical field of water pumps and comprises a base, a sliding rail is mounted on the inner side wall of the base, a first sliding block is mounted on the sliding rail in a sliding manner, a bearing plate is mounted above the first sliding block, and a lifting adjusting component is mounted in the base. The multi-stage pump comprises a bearing plate, a multi-stage pump body is installed on the bearing plate through a damping assembly, a water outlet and a water inlet are formed in the multi-stage pump body, a connecting pipe is installed on the water inlet, a filter screen and an impeller are installed in the connecting pipe, and a brush is installed on the impeller. The multi-stage pump body moves up and down through thread transmission, height adjustment is achieved, pressure is transmitted through the guide rod to enable the pair of second sliding blocks to move back to back and compress the spring so as to achieve the damping ef