Maintenance of LYH998 series new type intelligent Raymond grinding mill

1. When the new machine is put into production, the looseness of the connecting bolts of each part should be checked frequently, especially the bolts of the main machine and the grinding roller device.

2. The grinding mill should have special management during use. The operator should be trained to understand the principles and performance of the mill and be familiar with the operating procedures before starting the job.

3. To make the grinding mill work properly, the “maintenance and safe operating regulations” of the equipment should be formulated to ensure the long-term normal operation of the grinding mill, and at the same time, it should have necessary maintenance tools, lubricating oil, and accessories.

4. The grinding mill should be overhauled after a certain period. Repair and replace the wearing grinding rollers, grinding rings, scraper, etc. When replacing the grinding rollers, all grinding rollers inside the mill must be replaced at the same time to ensure the balance of the main machine.

5. When the service time of the grinding roller device exceeds 500 hours or so, the grinding roller assembly should be removed for cleaning and maintenance. Clean the dirty oil and dust cleaning inside it and replace the worn parts in time. Generally, remove the covers at both ends to clean the bearings. If the inside is too dirty or it is not cleaned for two or three cleaning cycles, it should be completely removed for cleaning and maintenance.

The following points should be noted when disassembling the grinding roller assembly.

a. The disassembly site should be clean and free of dust.

b. The upper bearing nut and the lower bearing nut are positive and negative nuts, pay attention to the direction of rotation when tightening or loosening.

c. The upper and lower bearings are lubricated with No.3 molybdenum disulfide grease, and it is suitable for the grease to fill half of the bearing gap.

d. The wool felt ring should be soaked with oil.

e. The bearing cover is sealed with mechanical sealant.

f. Seal the felt or asbestos packing through the slotted nut thin ring. When the slotted nut is pressed, it should not be too tight or too loose to make the roller drive flexible. The compression bolt should deform the thin ring of the slotted nut. Periodically check whether the bolts on the slotted nuts are loose.

g. After the assembly is completed, the grinding roller should rotate flexibly.

 
6. The grinding mill should have a major maintenance every 2000 hours. Clean the gearbox and all drive components, replace gear oil, and repair,r, and replace the wearing parts, to ensure the normal operation of the machine.