Explosion-proof low-noise permanent magnet coupler

Abstract

The invention relates to the technical field of permanent magnetic eddy current transmission and especially relates to an explosion-proof low-noise permanent magnet coupler. The explosion-proof low-noise permanent magnet coupler is characterized in that the explosion-proof low-noise permanent magnet coupler comprises an active hub, which is an integrated structure formed by a shaft sleeve body, asteel disc body and an external circular sleeve body, wherein the inner side of the steel plate body is connected with a conductor disc 1; after the external circular sleeve body is connected with a load-end steel disc, a semi-closed space, opened to the axis direction, is formed between the steel disc body and the load-end steel disc; and the inner side of the load-end steel disc is connected with a conductor disc 2. The explosion-proof low-noise permanent magnet coupler also comprises a load hub, which comprises a flange and a sleeve. After the active hub and the load hub are combined, a magnetic rotor disc is arranged in the semi-closed space. The outer sides of the steel disc body and the load-end steel disc are respectively provided with a mute ring belt. The cross section of the mutering belt is shaped like an arc or a trapezoid, the inner side of which is narrow and the outer side of which is wide. The shaft sleeve body, the steel disc body and the external circular sleeve bodycan be in a combined connection structure; and compared with the prior art, the explosion-proof low-noise permanent magnet coupler has the advantages of 1) good explosion-proof performance; 2) good heat radiation and noise reduction effect; and 3) matching various specifications and types of water pumps and fan loads.

Description

technical field [0001] The invention relates to the technical field of permanent magnet eddy current transmission, in particular to an explosion-proof and low-noise permanent magnet coupler. Background technique [0002] The permanent magnet eddy current transmission technology is a torque transmission scheme that realizes the torque transmission between the motor and the load without mechanical connection through the conductor and the permanent magnet. The magnetic fields of the magnets interact to form the transmission of torque. The main features of this technology are: 1. Energy-saving effect; 2. It allows a large installation alignment error (up to 5mm), which can simplify the installation and debugging process; 3. Improve the starting ability of the motor and reduce shock and vibration; 4. It has a long service life and can prolong the service life of parts in the system; 5. It is environmentally friendly and does not generate electromagnetic harmonics. Due to the ab...

AI Technical Summary

Problems solved by technology

Its disadvantage is that it does not have explosion-proof performance, which is not conducive to safe production in flammable and explosive occasions.

In addition, the vibration and noise of the pump body is relatively large. When the column pin coupling is used, the noise is still as high as 118.98dB under 50Hz operation, and it is hoped to reduce it as much as possible.

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