∅The realization of 4.5mx6m overflow ball mill electric control system

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Overflow https://clactononseaessex.uk are widely used in cement, mining and thermal power generation industries due to their simple operation and low maintenance costs. With the development of society, the ball mill has made great progress in overall performance. The ball mill electrical control system is the central system of the entire ball mill, used to control various operating techniques.

  The control system mainly includes:

(1) Control of temperature measurement of bearings and stator windings;

Each mill has three temperature measurement points for the main bearing at the feed end, the main bearing at the discharge end and the stator winding of the main motor, and the pinion bearing and the main motor have two temperature measurement points. At the same time, the status value of each point can be displayed in real time on the man-machine interface connected to the PLC, and the alarm value and shutdown value of each measurement point can be given.

(2) Control of the main bearing high and low pressure lubrication station

   The main bearing high and low pressure lubrication station includes high pressure oil supply and low pressure lubrication. The high pressure oil supply system of each station supplies two high pressure pump motors. When any high pressure pump fails to work or the oil pressure is low, the backup pump will automatically replace the original work. The pump works and continues to supply oil to the main bearing.

(3) Pressure control

The high-pressure system of the lubrication station is equipped with four pressure sensors to detect the high-pressure oil supply system in real time. When the oil pressure is lower than the lower limit setting value, the sensor will send out an audible and visual alarm signal and limit the start of the host; when it is higher than the upper limit value When the sensor will send out an audible and visual alarm signal.

(4) Oil flow control

Install a flow switch in the low pressure oil supply system near the two main bearing oil supply points to continuously monitor the oil supply flow at each point.

(5) Oil temperature control

There is no electric heater or cooler on the lubrication station, and the oil temperature is given an obvious display signal by the bimetal thermometer through the electric control system to automatically turn on the electric heater or the cooling water valve.

(6) Control of slow drive motor

The slow-speed drive motor and the main motor are interlocked with each other, and they cannot work at the same time; when the slow-speed drive motor is working, the high-voltage oil supply system should be in a normal working state.

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