Low-temperature centrifugal pump and preparation method

The invention provides a low-temperature centrifugal pump and a preparation method, and belongs to the technical field of low-temperature pumps, the low-temperature centrifugal pump comprises a pump shell, a motor assembly, an impeller, a flow distributor assembly, a volute structure, a pump bottom end cover, an inducer, a cone, a connecting pipe and a flow collecting section, one end of the motor assembly is connected with one end of the pump shell, the motor assembly comprises a pump shaft, and the pump shaft comprises a first part stretching into the pump shell; the impeller is arranged in the pump shell and is connected with the first part; the flow distributor assembly is arranged between the impeller and the motor assembly, and the volute structure is arranged in the pump shell. The pump bottom end cover is connected with the end, away from the motor assembly, of the pump shell and rotationally connected with the first part. The inducer is connected with the first part; the cone is connected with the pu