Vertical roller mill installation, shutdown, maintenance considerations
The good performance of the vertical roller mill is widely used in the grinding and ultra-fine grinding of various solid materials in cement, building materials, electric power, metallurgy, chemical, non-metallic minerals and other industries. However, few people will pay attention to the correct operation methods for the installation, shutdown, and maintenance of the vertical roller mill. The correct operation method is responsible for the equipment and also an important method for delaying the service life of the vertical roller mill. The following SBM heavy machine will be used. Let me introduce you briefly!
A: The vertical roller mill needs to pay attention to the following aspects during installation and commissioning:
- 1. The vertical roller mill body is equipped with a dynamic separator, which adopts electric stepless speed regulation (or frequency conversion speed regulation). Through the speed regulation, the fineness of the powder can be linearly adjusted.
- 2. The vertical grinding machine grinding roller adopts hydraulic pressure, and the grinding roller pressure can be adjusted according to the grinding machine load at any time to keep the grinding machine in good running state. At the same time, there is a limit device, which can effectively prevent the grinding roller from directly contacting the grinding disc, and can avoid the grinding machine. Strong vibrations that occur under abnormal conditions such as breakage, reducing wear on the abrasive body.
- 3. The vertical roller mill adopts a two-roller structure, and the grinding inner space is large. The grinding roller can be replaced or repaired by the inspection device, and the sleeve and the liner can be replaced at the same time.
- 4, the vertical roller mill grinding roller bearing seal and the external atmosphere of the grinding, is not affected by the dust inside the grinding, so no need to configure a sealing fan, can reduce the oxygen content in the grinding.
B: aspects of downtime need to pay attention
- 1. Stop feeding device.
- 2. Stop the main motor (observe the main motor current, and stop the main motor when the no-load current is close).
- 3. Stop the grinding system (dust collector, main fan, etc.).
- 4. Stop the separator.
- 5. Stop the hydraulic oil pump (turn the pump to the middle position after stopping the pump).
- 6. Stop the lubricating oil pump.
C: aspects of maintenance and overhaul
- 1. Use the downtime to check the wear condition of the wear parts to determine the replacement time and ensure the normal operation of the equipment.
- 2. Check if the nuts and bolts are loose and tighten them in time.
- 3. Try to ensure the safe operation of the auxiliary machine to reduce the frequent start and stop and idling of the mill and the exhaust fan.
- 4. The oil pipe leaks and needs to be repaired in time. The oil pipe repair must be welded by electric welding, and the compressed air is used to blow the waste in the pipe before installation.
- 5. Please replenish the lubricating oil regularly according to the parts indicated in the product manual.
The above is the SBM heavy machine for everyone to talk about the installation and commissioning, shutdown and maintenance of the vertical roller mill. Everyone can call us SBM heavy machine during any use!