High-efficiency mixer for producing neodymium-iron-boron magnet

Abstract

The invention provides a high-efficiency mixer for producing a neodymium-iron-boron magnet. The high-efficiency mixer for producing the neodymium-iron-boron magnet comprises a base, a rotating box, supporting shafts, bearing pads, protecting covers, an opening, sliding grooves, mixing rods, a nitrogen inlet, a nitrogen outlet, upper floating holes, lower floating holes, an air inlet pipe, an air purifier and an air pump device. The supporting shafts are symmetrically arranged at the middle of two sides of the rotating box, the rotating box is arranged on the upper part of the base through thesupporting shafts in an erecting mode, the bearing pads for limiting the radial position of the supporting shafts are connected to the upper parts of the supporting shafts, and the protecting covers for limiting the axial position of the supporting shafts are connected to the end parts of the supporting shafts. According to the high-efficiency mixer for producing the neodymium-iron-boron magnet, the sliding grooves and the mixing rods are arranged, when the rotating box begins to start rotating, the mixing rods in each sliding groove fall and slide alternately due to gravity action, a mixing role is played on iron-boron magnetic powder of an inner cavity, the mixing uniformity is improved, the mixing quality and efficiency are improved, the structure is novel, the installation is easy, andthe operation is easy.

Description

technical field [0001] The invention belongs to the technical field of NdFeB production equipment, and in particular relates to a high-efficiency mixing machine for NdFeB magnet production. Background technique [0002] At present, the double alloy process in the industry is used to make NdFeB magnets. The powders of A and B alloys (A is the main alloy and B is the auxiliary alloy) are weighed according to the mass ratio, then poured into a sealed box, and then mixed in three dimensions after filling nitrogen. Mixing time on the machine varies from 2 to 4 hours. [0003] Since the particle size of the NdFeB magnetic powder after jet milling is only about 2-6μm, the agglomeration phenomenon between the magnetic powder is relatively serious. At this time, the A and B alloy powders are mixed and then mixed in a three-dimensional mixer. Because Both alloys have agglomeration phenomenon, and the B alloy powder cannot be evenly dispersed on the surface of the A alloy powder parti...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above technical problems, the present invention provides a high-efficiency mixing machine for NdFeB magnet production to solve the problem that the existing equipment for mixing NdFeB magnets has low efficiency and cannot quickly mix materials evenly, which affects production. progress problem

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