Ultra-high temperature resistant internal rotor magnetic coupler without internal magnetism

Abstract

The invention discloses an ultra-high temperature resistant internal rotor magnetic coupler without internal magnetism; an external magnetic rotor (4) is connected onto a spindle (or a motor spindle); an isolating sleeve (7) is connected between the external magnetic rotor (4) and an internal rotor (5) without internal magnetism; the internal rotor (5) without internal magnetism mainly comprises an internal magnetic conductive ring (51), a high-flux rate magnetic level (52) which is made of a soft magnetic material, and an outer shell (53), wherein: the high-flux rate magnetic level (52) which is made of the soft magnetic material is arranged on the internal magnetic conductive ring (51); a support ring (54) inner layer is arranged on the internal magnetic conductive ring (51); the outer shell (53) is arranged outside the high-flux rate magnetic level (52) which is made of the soft magnetic material and a support ring (54), and is sealed (welded) by the support ring (54); and a waveform snap ring (55) which is in interference fitness with a shaft is arranged in the inner shaft hole of the support ring (54). The invention provides the novel ultra-high temperature resistant internal rotor magnetic coupler without internal magnetism, which has a simple structure, low cost and low installation difficult, improves the working efficiency, is applicable to magnetic force pumps (vortex pumps, centrifugal pumps and gear pumps), high-temperature magnetic force coupling, high-temperature fans, vacuum pumps and connectors on special occasions.

Description

technical field [0001] The invention relates to the field of pump equipment, in particular to an inner rotor magnetic coupler with ultra-high temperature resistance and no internal magnetism, and an ultra-high temperature-resistant magnetic linkage device. Background technique [0002] The magnetic pump in the prior art is composed of an outer magnetic rotor and an inner magnetic rotor, wherein the permanent magnets of the inner magnetic rotor have many high requirements. : 1. Demagnetization will start when the high temperature resistance is above 350 ℃, the magnetism will gradually fade after a long time, affecting the normal work, and the cost is high; 2. The welding and sealing process for the production of the inner magnetic rotor has high technological requirements, and the production The installation process is also very demanding. For example, the installation is easy to attract iron filings during work; due to the fragile magnets, great care must be taken when insta...

AI Technical Summary

Problems solved by technology

[0002] The magnetic pump in the prior art consists of an outer magnetic rotor and an inner magnetic rotor. The permanent magnets of the inner magnetic rotor have many high requirements. The high temperature resistant pump adopts high temperature resistant permanent magnets (such as samarium cobalt magnets), and its main disadvantages are: : 1. Demagnetization will begin when the high temperature is above 350°C, and the magnetism will gradually fade after a long time, affecting normal work, and the cost is high; 2. The welding and sealing process for the production of the inner magnetic rotor has high requirements on the process, which is very important for production. The installation process is also very demanding. For example, the installation is easy to attract iron filings during work; because the magnet is fragile, you must be very careful when installing the magnet; 3. The permanent magnet of the inner magnetic rotor is generally thin, and the loss of magnetic flux leakage is large.

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