The normal driving methods that are adopted by the ball mill are three-phase AC motor, hydraulic coupling, gear reducer, and belt pulley reducer.
The stuff canister of ball mill is used as the belt pulley for the reducer. When the ball mill starts with heavy load, the start current reaches more than 10 times of the rated current. In order to release the mechanical impact from starting, adding hydraulic coupling in the driving process. Electric motor drives its main working wheel rotating through the input shaft of hydraulic coupling to accelerate the working oil speed. Then the working oil drives the driven working turbine of hydraulic coupling rotating, passing the driving energy to the input shaft and load. The coupling in the driving system services as the buffer to let the electric motor starting in light load to reduce the starting current. After the motor running for a while, increase the load slowly to achieve the smooth starting and reduce the mechanical impact. We can search the optimized working speed of ball mill with the help of hydraulic coupling to improve the working efficiency.