Troubleshooting and solving the problem of blockage of vertical roller mill lock valve

Troubleshooting and solving the problem of blockage of vertical roller mill lock valve

What should I do if the lock valve is blocked when the vertical roller mill is working? What phenomenon indicates that the vertical roller mill is blocked? How to check it? When there is no abnormality in the circulating fan and the high-temperature fan, the workshop will greatly check the system for air leakage, and the vertical roller mill lock air-loading valve slipper will be sealed, which greatly reduces the system leakage and reduces the fan load.

Checking precautions: If it is a moving sieve jig, check whether the sieve hole of the Vertical Roller Mill is blocked. If the blocking layering effect is not good, this phenomenon will occur. The meteorite content is large, the meteorite row is not timely, and the displacement sensor is adjusted. The relative position on the buoy makes the meteorite drain. Check if there is a problem with the PLC control. If these are no problem, then the reason may be that there are fewer segments of the stone, and the meteorite enters the second stage, and the layering is unclear.

Vertical mill system operation: The main problem of the operation of the vertical roller mill is that there is no negative pressure at the ash end of the kiln, and the product fineness fluctuates greatly. Of course, there are reasons for the equipment itself, and there are reasons for fluctuations in the flow rate of the grinding, so that higher requirements are imposed on the operation of the central control worker.

A split-mounted inner cylinder made of heat-resistant steel is arranged inside each stage of the cyclone cylinder, which has a simple structure and is easy to install and disassemble. A new type of air lock valve is used in the lower part of the cyclone to reduce air leakage. In addition, a dosing valve is provided in the raw material feeding system at the top of the preheater. In order to prevent the crust blockage of the vertical roller mill, in addition to the expansion chamber under the cyclone, there is also a unique automatic control blowing system and the necessary air cannon to ensure the normal operation of the preheater system.

The filter detects that the differential pressure switch is installed on the primary effect and the medium effect filter respectively, monitors the dust suction effect of the filter, determines whether the filter is clogged according to the pressure difference, and alarms on the controller, prompting to take measures. The fan status detection monitors the fan operating status such as opening and closing, normal failure, etc., and provides corresponding protection measures according to the running condition of the vertical roller mill. When the fan stops or the fault stops, the controller alarms, prompting the fan to fail, and immediately stops all controlled devices.

It is worth reminding that when the vertical roller mill has an unsolvable problem, it is necessary to contact the manufacturer in time to carry out technical personnel for guidance.