The cement production process is very complicated. The cement machinery and equipment are mostly large-scale equipment. The production operation is difficult to control and failures are inevitable. This article analyzes the vibration failure caused by the instability of the production system in the production process of cement production equipment and gives detailed treatment measures.
Cause of vibration
1, the instability of the production system caused by equipment vibration
The instability of the production system is one of the reasons for the vibration of the equipment. The cement mill will generate vibration when the material bed is unstable. The direction of vibration is reflected in the vertical direction of the rack, followed by the horizontal direction, and the preheater system is collapsed. It will cause temporary unbalance of the high-temperature fan and cause vibration in the horizontal direction. When the rotary kiln breaks the egg, it will cause low-frequency bumps in the foundation. The uneven rolling of the kiln skin will cause the cylinder to bend, affect the vibration of the transmission, and turn to convex. When in the local area, a dull cracking sound is emitted, and the vibration in the horizontal direction is large. When it is turned to the recessed place, a percussion sound is generated and the vertical vibration is large.
2. Vibration caused by interference
The interference of equipment components, such as the reducer and Roots blower, has multiple running parts inside. Once the positioning of the internal components fails, the running clearance changes, and collision or frictional interference occurs between the running parts, resulting in vibration, vibration direction and impact. The same direction.
Vibration treatment
1, the production system caused by equipment vibration treatment
The failure of the production system can cause severe vibration in the equipment, which is typical in the cement industry. When the system collapses, it often causes horizontal vibration of the cement mill. The treatment method is to stabilize the system, so that the wind and material ratio is moderate, to prevent the gas material in the non-separation zone to separate the slump; the second is to eliminate the dead angle, so that no place to deposit the material, to achieve the dispersion and discharge. There are no shortages of such accidents in the cement industry. Many cement plants often suffer from similar failures and cause the system to jump and stop, affecting production, and are relieved after being treated as above. The vibration of the cement mill is reflected in the time when the material bed is unstable. During operation, the vibration can be relieved by stabilizing the incoming material, grain size, and removing hard foreign materials. In our factory, due to insufficient ventilation, the material brought up in the mill suddenly collapsed, causing the material bed to be unstable and the sandstone containing more iron pieces to vibrate. Because of the bending of the cylinder, the rotary kiln will cause vibration in the kiln head and kiln seals. In case of such circumstances, take measures to straighten the kiln as soon as possible.
2. The process of mutual interference and vibration
Vibrations caused by mutual interference may exist inside the device, some outside the device, some between the moving parts, and some between the moving parts and the stationary parts. If the inlet of the fan is rubbed against the impeller, the inlet should be repaired to eliminate interference with the impeller. The interference between the non-housing equipment or components and the adjacent objects, such as the loosening of the end cap bolts of the ball mill, will interfere with the foundation and vibrate, and the pin of the coupling will impact the bearing seat to generate vibration, and the bolts and pins shall be promptly Reset it to run in the allowed space.
This article has targeted analysis and processing of vibration caused by vibration and interference caused by instability of the production system. The main vibration equipment includes cement mill, rotary kiln, speed reducer, Roots blower, etc. After reasonable treatment, it can quickly resume efficient production. mode.
Cause of vibration
1, the instability of the production system caused by equipment vibration
The instability of the production system is one of the reasons for the vibration of the equipment. The cement mill will generate vibration when the material bed is unstable. The direction of vibration is reflected in the vertical direction of the rack, followed by the horizontal direction, and the preheater system is collapsed. It will cause temporary unbalance of the high-temperature fan and cause vibration in the horizontal direction. When the rotary kiln breaks the egg, it will cause low-frequency bumps in the foundation. The uneven rolling of the kiln skin will cause the cylinder to bend, affect the vibration of the transmission, and turn to convex. When in the local area, a dull cracking sound is emitted, and the vibration in the horizontal direction is large. When it is turned to the recessed place, a percussion sound is generated and the vertical vibration is large.
2. Vibration caused by interference
The interference of equipment components, such as the reducer and Roots blower, has multiple running parts inside. Once the positioning of the internal components fails, the running clearance changes, and collision or frictional interference occurs between the running parts, resulting in vibration, vibration direction and impact. The same direction.
Vibration treatment
1, the production system caused by equipment vibration treatment
The failure of the production system can cause severe vibration in the equipment, which is typical in the cement industry. When the system collapses, it often causes horizontal vibration of the cement mill. The treatment method is to stabilize the system, so that the wind and material ratio is moderate, to prevent the gas material in the non-separation zone to separate the slump; the second is to eliminate the dead angle, so that no place to deposit the material, to achieve the dispersion and discharge. There are no shortages of such accidents in the cement industry. Many cement plants often suffer from similar failures and cause the system to jump and stop, affecting production, and are relieved after being treated as above. The vibration of the cement mill is reflected in the time when the material bed is unstable. During operation, the vibration can be relieved by stabilizing the incoming material, grain size, and removing hard foreign materials. In our factory, due to insufficient ventilation, the material brought up in the mill suddenly collapsed, causing the material bed to be unstable and the sandstone containing more iron pieces to vibrate. Because of the bending of the cylinder, the rotary kiln will cause vibration in the kiln head and kiln seals. In case of such circumstances, take measures to straighten the kiln as soon as possible.
2. The process of mutual interference and vibration
Vibrations caused by mutual interference may exist inside the device, some outside the device, some between the moving parts, and some between the moving parts and the stationary parts. If the inlet of the fan is rubbed against the impeller, the inlet should be repaired to eliminate interference with the impeller. The interference between the non-housing equipment or components and the adjacent objects, such as the loosening of the end cap bolts of the ball mill, will interfere with the foundation and vibrate, and the pin of the coupling will impact the bearing seat to generate vibration, and the bolts and pins shall be promptly Reset it to run in the allowed space.
This article has targeted analysis and processing of vibration caused by vibration and interference caused by instability of the production system. The main vibration equipment includes cement mill, rotary kiln, speed reducer, Roots blower, etc. After reasonable treatment, it can quickly resume efficient production. mode.
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