In industries such as mining and coal preparation, materials need to be screened and classified before they can be used. Vibrating screens use mechanized vibration to classify materials according to different sizes. They have a large processing capacity and high screening efficiency, which is many times more efficient than traditional manual sorting. They can be said to be a “good helper” for screening work. Sin embargo, if the screen is used improperly, it will cause mechanical failures and short service life. In order to avoid these problems, you need to learn more about the operating steps and precautions of the vibrating screen.
Vibrating screen operation steps
1. Inspection before starting
(1) Check whether the starting equipment is in good condition, whether the motor is grounded properly, and adjust the tightness of the V-belt.
(2) Clear the debris on the screen to avoid heavy load starting.
(3) Check and tighten the bolts of each part.
(4) Check and add enough lubricating oil in the vibrator.
(5) Check whether the inlet and outlet chutes are unobstructed, check whether the crossbeams are welded, and check whether the safety protection devices are safe and reliable.
(6) After completing the above preparations, you can send a signal to notify the start-up.
2. Start the machine
Turn the control switch handle to the forward position of the motor, press the start button, close the switch, and start the motor. Observe the operation status. There is no abnormal sound or vibration. It can only run normally after it runs smoothly. It can only be fed after it runs normally. Before starting the equipment, it must be ensured that the discharge port transportation equipment has started and run normally. After confirming that the operation of the vibrating screen is completely normal, send a signal to notify the discharge.
3. Equipment operation
The feeding must be uniform, and it cannot be overloaded or have excessive impact. Pay attention to the temperature and abnormal sound of the motor at any time. Always pay attention to the discharge situation. If there is any blockage, it must be cleared in time. Inspect the nozzle of each vibrating screen for blockage or detachment, and observe the temperature and sound of the motor and the sound of the exciter frequently. Any repair or adjustment of the vibrating screen during operation must be carried out after the power supply of the machine is cut off and the sign prohibiting closing is hung.
4. Equipment shutdown
Stop feeding before shutting down, and shut down after the material on the screen surface is drained. Pull down the knife switch and close the pressure water gate. Turn the control switch handle to the stop position. Ring the stop bell for the unloading transportation system. Clean the vibrating screen and the work site. In special circumstances, the machine can be shut down immediately.
Precautions for vibrating screen operation
1. Pay attention to the bearings of the transmission part. Check the bearing temperature in the middle and end of each shift during the operation of the screen machine, check the amplitude of the screen machine under normal load and peak load of the screen machine, and observe the operation of the screen machine at any time. The normal operating temperature rise is 35℃, the ambient temperature is 25℃, the bearing temperature rise is higher than 70℃, and the ambient temperature is 25℃, the parking operation is executed.
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