In addition to the small ball mill application of the squirrel-cage motor drag, most of the small and medium-sized ball mills are driven by a three-phase wound asynchronous motor. Winding motors are available in JR, JRQ, and YR series.
The stellar ball mill price network analyzes the motor suitable for ball mill drag:
Asynchronous Motors In addition to the small ball mills used in the squirrel cage motor drag, most of the small and medium ball mills are driven by a three-phase wound asynchronous motor. Winding motors are available in JR, JRQ, and YR series.
The main advantages of asynchronous motors in ball mill drag are:
1 equipment is simple and cheap;
2 has sufficient starting torque to directly start the ball mill; its starting torque can be controlled by the series resistance of the rotor winding to control the frequency sensitive varistor to automatically change the resistance in the rotor circuit during the starting process of the motor, Adapt to the requirements to improve startup performance. The price of the ball mill, when starting, as long as the power switch is turned on, the motor automatically reduces the resistance in the rotor circuit as the speed of the rotor increases with the increase of the rotor speed, so that the motor speed rises steadily.
3 The starting current is small. The starting current can be controlled below 1.5 times of the rated current, so it is applied to the line with low grid capacity and will not affect the normal operation of other equipment.
A disadvantage of asynchronous motors is the power factor with lower hysteresis. This limits its application to ball mill drag. There are two ways to improve the power factor: one is to apply a large-capacity high-voltage electrostatic capacitor; the other is to apply it to the camera, connect it to the rotor winding of the main motor, and change the phase of the motor to improve the factor. The motor power factor is increased to 0.95 to 1.0. In addition, the power factor of the asynchronous motor is related to the rated motor speed. The lower the speed, the lower the power factor. Therefore, from the viewpoint of electricity use in the river, high-speed asynchronous motors should be preferred. As a modern ball mill manufacturer integrating R&D, production and sales, Zhengzhou Hengxing Heavy Equipment Co., Ltd. provides customers with the highest quality products and services, actively responds to national construction and environmental protection, energy saving and low carbon requirements, and strives to focus on the core. Product R & D and production of ball mill, energy-saving ball mill, cement ball mill, cone ball mill, etc., strive to make the new generation of energy-saving ball mill products more environmentally friendly and energy-saving on the basis of maintaining the original performance quality, for the country's construction and society. The development contributes to the strength of being a social enterprise. The ball mill is reasonably priced and has many varieties. Welcome to consult.
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