Submersible pump motor rotor

Abstract

A submersible pump motor rotor is disclosed in the invention, and comprises a rotor shaft rod, a punching sheet magnetic group, an electric brush ring seat and a winding external member which sleeves the outer side of the punching sheet magnetic group, the punching sheet magnetic group and the electric brush ring seat are fixedly sleeved on the outer side of the rotor shaft rod, a coil which is electrically connected with the end part of the electric brush ring seat is wound on the surface of the winding external member, a plurality of contact electrode guide sheets are arranged on the surface of the brush ring seat, the punching sheet magnetic group comprises a silicon steel punching sheet and a punching sheet handle, and a shaft fixing hole is formed in the surface of the silicon steel punching sheet. The novel punching sheet magnetic group structure is arranged, the multiple layers of silicon steel punching sheets and punching sheet handle structures which can be assembled and clamped with each other are used for mutual joint, the lower engaging grooves and the upper engaging grooves are clamped and fixed to maintain the tight attachment between the punching sheet magnetic groups, and when the motor runs, locking is carried out under the combined action of centrifugal force and the meshing action of the lower meshing groove and the upper meshing groove, so that the phenomenon that the working efficiency of the motor is influenced by a separation gap generated between the silicon steel sheets due to axial movement of the rotor assembly is avoided.

Description

technical field [0001] The invention relates to the technical field of motor rotors, in particular to a submersible pump motor rotor. Background technique [0002] At present, the design of electronic water pump motors mainly adopts the design of tributary brushless motors. The rotor design of the motor is mainly made of multi-layer silicon steel sheets. The silicon steel sheets are designed with magnetic steel grooves. The split injection molding of the rotor is generally completed by two injection moldings. The first pre-injection molding of the magnet-assembled rotor core is followed by injection molding of the impeller-rotor assembly. Because the internal bearings of electronic water pumps have been soaked in coolant for a long time, only corrosion-resistant graphite and ceramic materials can be used as bearing materials, and the bearings can only have a clearance fit with the central shaft of the rotor. As a result, the rotor assembly is not limited in the axial direc...

AI Technical Summary

Problems solved by technology

Or install injection molded parts under the thrust plate, and then use the injection molded parts to wrap the thrust plate externally. This structural design requires the entire circle of interference wrapping for the thrust plate, which makes the assembly of the thrust plate difficult and the production efficiency is low. , and the wrapping of the limit thrust structure is likely to cause the heat insulation of the rotor to be unable to dissipate the heat in time, and there are certain defects

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