Water-cooling type permanent magnet energy-saving adjustable-speed motor

Abstract

The technology discloses a water-cooling type permanent magnet energy-saving adjustable-speed motor. An adjustable-speed component comprises an adjustable-speed pull rod, a spiral groove transmission shaft, a spiral groove inner sliding bush, a spiral groove outer sliding bush and an adjustable-speed bearing; the spiral groove inner sliding bush is fixedly connected with a motor shell, the spiral groove outer sliding bush sleeves the spiral groove inner sliding bush; a spiral groove is formed in the spiral groove inner sliding bush, the spiral groove transmission shaft is embedded in the spiral groove and fixedly connected with the spiral groove outer sliding bush; the spiral groove outer sliding bush is fixedly connected with a motor transmission shaft on an axial direction through the adjustable-speed bearing, and rotatably connected with the motor transmission shaft in a peripheral direction; the adjustable-speed pull rod is fixedly installed on the spiral groove outer sliding bush; when the adjustable-speed pull rod is rotated to adjust the speed, the spiral groove transmission shaft slides in the spiral groove in the spiral groove inner sliding bush to push the spiral groove outer sliding bush to move along the axial direction, and the adjustable-speed bearing fixed on the spiral groove outer sliding bush is used for driving a motor rotor shaft to move along the axial direction. Through the adoption of the technology, the aim of stepless speed adjustment is realized, the structure is simple, the reliability is good, and the maintenance charge is less.

Description

technical field [0001] The technology designs a permanent magnet energy-saving speed-regulating motor in the electromechanical field, and particularly relates to a water-cooled permanent magnet energy-saving speed-regulating motor. Background technique [0002] At present, in large industrial enterprises, such as chemical industry, cement, metallurgy and other industries, a large number of frequency converters are used in production due to the needs of the production process and the purpose of energy saving. Among them, the motors above 200 kW are mostly high-voltage motors. Especially for motors with a rated power above 400 kW, the voltage is basically 6000V or 10000V. The high-voltage frequency converter matched with the high-voltage motor has many disadvantages, mainly including: complex system, difficult maintenance and high cost. In addition, the harmonics it generates will pollute the power grid. For the electromagnetic induction speed controller, because of its sim...

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Problems solved by technology

[0004] The purpose of this technology is to provide a water-cooled permanent magnet energy-saving speed-regulating motor to overcome the shortcomings of the existing motor speed-regulating technology, such as complexity, poor reliability, and high maintenance costs.

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