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Inspection of cement plant equipment before operation

Date:2019-08-21 15:35 Source:cementepcViews:

The safe operation of the equipment is an important factor to ensure the effective efficiency of the cement plant, so what kind of inspection should be carried out before the operation of the equipment?
 

1. Check cement mill before operation


(1) check whether the cylinder is welded or cracked.

(2) check whether the manhole door is tight and the seal is good.

(3) check the barrel bolts and end cover bolts of the mill to confirm that they are not loose or fall off.

(4) check the lubricating oil in the sliding shoe bearing box of the mill barrel should be above the middle line of the oil mark.

(5) confirm that the high and low pressure oil pump and lubricating oil pressure meet the requirements. The low pressure outlet oil pressure should be 0.12-0.4mpa, the pressure difference of filter screen should be lower than o. 1MPa, and the pump pressure should not be higher than 0.6mpa.

(6) check whether the oil supply of sliding shoes is sufficient.

(7) check the oil temperature of thin oil station should be between 30℃ and 40℃.

(8) carefully check whether the oil seals on both sides of the sliding shoe bearing of the supporting cylinder are leaking oil.

(9) check whether there is contact between the inner rotating part and the fixed part of the mill.

(10) check whether there are no people or obstacles around the equipment.

(11) check whether the water volume, water pressure and water temperature of the cooling water system are normal.

(12) start each oil pump. The high and low pressure oil pumps run normally and the pressure is normal. Conduct slow rotation operation to confirm whether the brake is sensitive and reliable.

(13) check whether the oil spraying is normal.

cement mill

2. Check before operation of roller press


(1) check the connection and fastening bolts of the equipment.

(2) check the wear on the surface of the roller of the roller press, check whether there is any debris left inside the machine (especially metal objects), so as to avoid damage to the roller of the roller press when starting up, adjust and check the initial gap between the two rollers.

(3) if there is no one or obstacle around the equipment, close the manhole door.

(4) check whether each instrument, instrument and valve is normal and flexible, indicating whether the scale is clear, whether the opening degree is appropriate, whether the oil, water, air and material pipeline has leakage or blockage.

(5) check whether the oil quality, oil level, oil pressure and oil temperature of each lubrication and hydraulic parts meet the requirements.

(6) whether the control panel has alarm display.

(7) check whether the cooling water valve is open and whether the water quantity, water pressure and water temperature are normal.

(8) check the nitrogen pressure of the accumulator, and timely charge the accumulator prefilling pressure to 80% of the intended oil cylinder pressure.

roller press

3. Check cement grinding reducer before operation


(1) check whether the oil volume and oil level in the oil tank are normal.

(2) check whether the lubricating oil pressure and temperature of reducer are normal: the outlet oil pressure of thin oil station should not be less than 0.3mpa, the pump pressure should not be more than 0.6mpa, the pressure difference of filter screen should not be more than 0.1mpa, and the oil tank temperature should be between 20℃ and 25℃.

(3) check whether the cooling water valve is open and whether the water quantity, water pressure and water temperature are normal.

(4) check whether all pipeline valves are normal and there is no leakage of oil.

(5) carefully check whether the oil spraying is normal through the observation hole.

(6) check whether the coupling and shield are normal.

cement grinding

4. Check before operation of large motor


(1) check whether the connecting screws are loose, fall off or break.

(2) check whether the air duct is smooth and the fan is in good condition.

(3) whether the lubricating oil pressure of sliding bearing is normal and whether the oil quantity is sufficient.The outlet oil pressure of the dilute oil station should not be lower than 0.2mpa, the pump pressure should not be higher than 0.6mpa, the pressure difference of the filter screen should not be greater than 0.1mpa, and the oil tank temperature should be between 20℃ and 25℃.

(4) check whether the cooling water valve is open and whether the water quantity, water pressure and water temperature are normal.

(5) check whether the sliding ring of rotor winding linear motor is smooth and whether the carbon brush is too short (no less than 2mm of brush frame).

(6) check for oil leakage.

(7) check whether the terminal end of the motor's inlet and outlet cables has overheating and discoloration.

(8) cement mill main motor must check whether the slow drive is off before running.

large motor

5. Check cement grinding system fan and grinding tail dust collector before starting up


(1) check whether there are sundries in the fan and whether the fan is in static balance.

(2) check whether the oil level of the bearing seat (box) is normal.

(3) check whether the manhole door is sealed and whether there is any air leakage in the casing.

(4) check whether the fan inlet valve opening corresponds to the central control and whether it is closed to the "0" position.

(5) check whether the cooling water valve is open and whether the water quantity, water pressure and water temperature are normal.

(6) check whether foot screws and connecting bolts are fastened and fall off

cement grinding system fan

Of course, there are more than these equipment to be inspected. Today, as long as we introduce several large machines for pre-operation inspection, jiangsu LVSSN can provide high quality and efficient cement factory construction. Please consult our customer service or leave a message to us for details, and we will reply to you as soon as possible.

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