Iron powder inner ring type stainless steel magnetic seal bearing

Abstract

The invention discloses an iron powder inner ring type stainless steel magnetic seal bearing. The iron powder inner ring type stainless steel magnetic seal bearing comprises a magnetic bearing outer seat, an upper power output shaft, a lower power shaft, two symmetrical downward core bearings, an upper radial bearing, strong magnets and air seal inner rings, wherein the bottom of the magnetic bearing outer seat is an air inlet end, and the top of the magnetic bearing outer seat is an air outlet end; the two strong magnets are symmetrically fixed in the magnetic bearing outer seat and are pressed and fixed through a magnet pressing seat; the lower power shaft, the air seal inner rings and the upper power output shaft are sequentially arranged in the magnetic bearing outer seat from bottom to top and are connected through an upper output power shaft screw; iron powder grooves are formed between the inner sides of the strong magnets and the magnet pressing seat; iron powder is arranged inthe iron powder grooves; the outer ends of the two air seal inner rings are located in the iron powder grooves respectively; and the inner ends of the two air seal inner rings are connected through aconnecting key. According to the iron powder inner ring type stainless steel magnetic seal bearing, metal magnetic interference is not generated in the assembling process of the magnetic bearing.

Description

technical field [0001] The invention belongs to the technical field of novel magnetic seal bearings, in particular to an iron powder inner ring type stainless steel magnetic seal bearing. Background technique [0002] The development of modern industrial technology requires a rotary sealing device that can completely isolate the external air (or liquid) from the internal environment without leakage under high temperature and high pressure, and can transmit power from the outside to the inside. The purpose is to Make the internal environment react in agitation, so as to obtain pure reaction substances, which is the commonly used magnetic seal bearing technology at present. However, magnetic fluid and magnetic force are affected by temperature and materials. It is very difficult or even impossible to assemble under the action; most of the current magnetic seal technology uses the magnetic fluid generated by the N.S pole magnetic field and the small gap between the magnetic fie...

AI Technical Summary

Problems solved by technology

[0002] The development of modern industrial technology requires a rotary sealing device that can completely isolate the external air (or liquid) from the internal environment without leakage under high temperature and high pressure, and can transmit power from the outside to the inside. The purpose is to Make the internal environment react in agitation, so as to obtain pure reaction substances, which is the commonly used magnetic seal bearing technology at present. However, magnetic fluid and magnetic force are affected by temperature and materials. It is very difficult or even impossible to assemble under the action; most of the current magnetic seal technology uses the magnetic fluid generated by the N.S pole magnetic field and the small gap between the magnetic field and the rotating shaft to add magnetic fluid to form a magnetic fluid sealing ring. The seal does not leak gas under rotation, but in a high-temperature and high-pressure environment, when the fluid in the magnetic fluid is heated and volatilizes and only iron powder is left, the seal will fail and leakage will occur during rotation, making the production movement extremely unsafe

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