Novel vertical centrifugal pump

The utility model provides a novel vertical centrifugal pump, and relates to the technical field of centrifugal pumps. The novel vertical centrifugal pump comprises an outer shell, an inner shell contained in the outer shell, a pump shaft arranged in the inner shell in a penetrating mode, a power source installed on the top of the outer shell, a multi-stage impeller arranged in the inner shell and installed on the pump shaft, and guide vanes installed on the inner shell and matched with the impeller. The supporting structure is arranged on the periphery of the pump shaft between the power source and the impeller; wherein an external water inlet and an external water outlet are formed in the bottom of the outer shell; an internal water inlet is formed in the top of the inner shell, and an internal water outlet is formed in the bottom; a water inlet channel communicated with the external water inlet and the internal water inlet is formed between the inner shell and the outer shell; the internal water outlet is