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　　1. Use of coal mill oil filter:

　　The oil filter of coal mill adopts the function of vacuum heating separation, four-stage filtration dehydration, degassing and impurity removal. Mainly deal with unqualified machinery oil, hydraulic oil, compressor oil, refrigeration oil and other industrial lubricants. It is suitable for the purification and regeneration of various lubricants in petroleum, chemical, mining, metallurgy, power, transportation, machinery manufacturing, railway and other industries.

　　2. Coal mill is the key equipment for crushing materials after they are crushed. Coal mills are widely used in cement, silicate products, new building mills, refractories, fertilizers, black and non-ferrous metal mineral processing and glass and ceramics industries. They grind various ores and other grindable materials dry or wet.

　　The working principle of coal mill:

　　This machine is a horizontal cylindrical rotating device, driven by external gears, two warehouses, lattice ball mill. Material enters the first warehouse of the mill evenly by screw through the hollow shaft of the feeding device. There are staircase or corrugated lining plates in the warehouse, which contain steel balls of different specifications. The centrifugal force produced by the rotation of the cylinder brings the steel balls to a certain height and then falls down, which has a heavy blow and grinding effect on the material. After the material is roughly grinded in the first bin, it enters the second bin through a single-layer partition board. The bin is equipped with a flat lining board and steel balls to further grind the material. The powder is discharged through the discharging grate to complete the grinding operation.

　　The motor drives the grinding disc to rotate through the reducer. The material falls from the inlet port to the center of the grinding disc through the air lock feeder, and the hot air enters the grinding disc from the air inlet. With the turning of the grinding disc, the material moves to the edge of the grinding disc under the action of centrifugal force. When it passes through the annular groove on the grinding disc, it is crushed by the grinding roll. The crushed material is brought up by the high-speed air flow of the wind ring at the edge of the grinding disc, and the large particles are directly dropped on the grinding disc and re-grinded. The material in the air flow passes through the upper part of the separator. Under the action of the rotating rotor, the coarse powder falls from the cone bucket to the grinding disc and grinds again. The qualified fine powder is grinded together with the airflow. It is collected by the dust collecting device, that is, the product. The material containing moisture is dried in the process of contacting the hot airflow. By adjusting the temperature of the hot air, the material with different humidity can meet the requirements. Product moisture. By adjusting the separator, the required thickness of different products can be achieved.

　　3 Start-up steps of gear oil pump of coal mill oil filter:

　　It is very important to start gear oil pump correctly, otherwise it will damage the pump. Here are some common knowledge before starting. Please pay attention to one.

　　Prepare gear oil pump before starting:

　　1. To test whether the motor steering is correct (with the direction indicated on the pump body), the test time should be shorter so as not to cause dry wear and tear of the grinding parts caused by the internal rotation of the pump due to non-liquid lubrication.

　　2. Open the exhaust valve to fill the whole pump body with liquid, and close the exhaust valve when it is full.

　　3. Check whether all parts are normal.

　　4. The high temperature type should be preheated at a rate of 50 C/h in order to ensure uniform heating of the components.

　　Stating of gear oil pump:

　　1. Close the pump outlet valve;

　　2. Fully open pump inlet valve;

　　3. Start the motor and observe whether the pump is running normally.

　　4. Adjust the opening of the outlet valve to the required working conditions. If the user has a flow meter or pressure gauge at the outlet of the pump, the pump should operate at the rated points listed in the performance parameter table by adjusting the opening of the outlet valve. If the user does not have a flow meter or pressure gauge at the outlet of the pump, the motor and electricity of the pump should be measured by adjusting the opening of the outlet valve. Flow, so that the motor in the rated current operation, otherwise will cause the pump overload operation (that is, large current operation, until the motor burned out) adjustable outlet valve opening large and small and pipeline conditions related;

　　5. Check the leakage of the shaft seal, and the leakage of the mechanical seal should be less than 3 drops per minute in normal time.

　　6. Check the motor, bearing temperature rise is less than 80 C.

　　Gear oil pump shutdown:

　　1. Close the outlet pipe valve;

　　2. Cut off the power supply;

　　3. Close the inlet pipeline valve;

　　4. If the gear oil pump is stopped for a long time, the liquid in the pump should be exhausted.

　　Maintenance of Coal Mill

　　Maintenance is a daily work that must be done, so that there will be no major problems in the future. Maintenance work should be carried out regularly. After each shutdown, the bolts of various parts of the machine should be checked for loosening and loosening, and the lubricating oil quantity of the bearing room before and after the main engine should be checked, and the lubricating oil quantity of the bearing room should be replenished on time. The bearing room should be injected with an axial end cap nozzle to inject lithium base oil. Lubricating oil.