Mesh belt shot blasting machine is a kind of equipment commonly used for metal surface cleaning and rust removal. It is widely used in the surface treatment process of workpieces such as castings, forgings and steel. Due to its high working intensity, some common faults may occur during long-term use. The following are some common faults of mesh belt shot blasting machine and their solutions:

1. Poor shot blasting effect
Fault manifestation:
The surface of the workpiece is not cleaned cleanly, and there are still residual oxide scale, rust, etc.
The surface roughness of the workpiece is uneven, and the shot blasting effect does not meet the requirements.
Possible reasons:
Shot material problem: The shot material used is of poor quality, excessive wear, uneven size or moisture.
Shot blasting machine failure: The blades of the shot blasting machine are severely worn, resulting in low shot blasting efficiency.
Dust accumulation inside the shot blasting room: The shot blasting room or the recovery system is blocked, affecting the circulation of shot materials.
Mesh belt operation problem: The mesh belt speed is too fast or too slow, resulting in insufficient exposure time of the workpiece.
Solution:
Check and replace the shot: Use the shot that meets the requirements, check the wear of the shot regularly, and avoid using broken or over-worn shot.
Check the shot blaster: Check the wear of the blades and shot blasting ports of the shot blaster, and replace damaged parts if necessary.
Clean the shot blasting room: Clean the shot blasting room, recovery system and shot channel regularly to ensure smooth flow of shot.
Adjust the mesh belt speed: Adjust the running speed of the mesh belt according to the size of the workpiece and the requirements of the shot blasting effect.

2. The mesh belt does not run or gets stuck
Fault manifestation:
The mesh belt cannot run normally, gets stuck or stagnates.
Possible causes:
Excessive wear or breakage of the mesh belt: After long-term use, the mesh belt is excessively worn or broken.
Transmission system failure: The transmission device of the mesh belt fails, such as damage to the motor, chain, gear and other components.
Material accumulation: Workpieces or shot accumulate in the mesh belt area, resulting in excessive resistance.
Solution:
Check and replace the mesh belt: Check whether the mesh belt is worn or broken. If damage is found, it should be replaced in time.
Check the transmission system: Check the working status of the motor, reducer, chain and other components to ensure the normal operation of the transmission system. If any problems are found, repair or replace them.
Clean up material accumulation: Regularly clean up the material accumulation in the mesh belt area to ensure that the mesh belt is unobstructed.

3. Electrical system failure
Failure manifestation:
The control panel does not respond and the motor cannot start.
The electrical equipment is short-circuited or overloaded, and the equipment cannot work properly.
Possible causes:
Electrical component damage: such as switches, contactors, relays and other electrical components in the electrical control cabinet are damaged or aged.
Loose cable connection: The cable connection in the electrical system is loose or the contact is poor, resulting in the inability to transmit current normally.
Electrical short circuit or overload: There is a short circuit in the electrical system, or the equipment is overloaded and causes overload protection.
Solution:
Check the electrical components: Regularly check the working status of the electrical components and replace the aged or damaged components in time.
Check the cable connection: Check whether the cable connection in the electrical system is firm to ensure that there is no looseness.
Check overload protection: Ensure that the equipment is not overloaded. If overload occurs, adjust the working parameters in time to avoid overload operation.

4. The shot blaster is too noisy
Fault manifestation:
The shot blaster generates abnormal noise during operation, which is far beyond the normal level.
Possible causes:
Damage or wear of the shot blaster blades: The shot blaster blades are damaged, cracked or severely worn, resulting in unbalanced operation.
Dust or debris inside the shot blaster: Debris or dust accumulates inside the shot blaster, affecting its normal operation.
The speed of the shot blaster is too fast: Due to improper adjustment, the speed of the shot blaster is too high, resulting in increased noise.
Solution:
Check and replace the blades: Check the wear of the shot blaster blades regularly, and replace them in time if wear or damage is found.
Clean the inside of the shot blaster: Clean the debris and dust inside the shot blaster regularly to keep the inside clean.
Adjust the speed: Check the speed setting of the shot blaster to ensure that it is within the normal range to avoid excessive noise due to excessive speed.

5. Equipment overheating
Fault manifestation:
The equipment overheats after long-term operation, causing the equipment to shut down for protection.
Possible causes:
Cooling system failure: The cooling system of the equipment does not work properly, resulting in overheating.
Excessive workload: The equipment is overloaded, resulting in excessive friction of components or overload of the motor.
Insufficient lubrication: Insufficient lubrication of the transmission system or other mechanical parts increases friction resistance and causes overheating.
Solution:
Check the cooling system: Check whether the cooling system of the equipment is unobstructed, clean the cooling channel and fan to ensure its normal operation.
Control the workload: Avoid overloading the equipment, and reasonably adjust the mesh belt speed and shot blasting workload.
Check the lubrication system: Check and replenish the lubricating oil of various parts of the equipment to ensure good lubrication of mechanical parts and reduce friction.

6. Blockage of the shot recovery system
Fault manifestation:
The shot recovery system is not running smoothly, the shot cannot be recovered normally, and even blocked.
Possible causes:
Blockage of the recovery pipeline: Too much debris has accumulated in the shot recovery pipeline, causing the recovery system to be blocked.
Failure of the recovery device: The motor or other driving components of the recovery device fail, causing the recovery system to fail to work properly.
Solution:
Clean the recovery pipe: Regularly check and clean the recovery pipe to remove debris or shot blockage.
Check the recovery device: Check the motor and driving components of the recovery device to ensure that they are operating normally. If a fault is found, repair or replace it in time.

Summary
Common faults of mesh belt shot blasting machines include poor shot blasting effect, mesh belt not running, excessive noise of the shot blasting machine, electrical system failure, etc. In response to these problems, operators need to regularly check and maintain the equipment, replace worn or damaged parts in time, and make adjustments according to actual conditions to ensure long-term and stable operation of the equipment. Through scientific and reasonable management and maintenance, the service life of the mesh belt shot blasting machine can be greatly extended and its work efficiency can be improved.