To effectively address the challenging issue of unstable operation in sand-making machines, we must adopt a systematic troubleshooting approach, conduct an in-depth analysis of a series of critical factors, and implement corresponding measures based on the findings. Below, I will provide a detailed explanation of this process.
In terms of maintenance of core components, the condition of the impeller and rotor is of paramount importance. As the key component responsible for crushing materials, the wear and tear of the impeller's wear-prone parts directly impacts the machine's operational stability. Therefore, we need to regularly inspect these wear-prone components, and if severe wear is detected, they should be replaced promptly. Additionally, the rotor, as the component that drives the impeller's rotation, may experience operational imbalance due to residual sand and gravel on its surface. After repairing or replacing components, we must thoroughly clean the rotor's surface and use specialized balancing tools for weight calibration to ensure smooth operation. Furthermore, rechecking the rotor's balance is an indispensable step. Typically, the weight difference between hammer sets must be strictly controlled within 5 grams. This precise adjustment is crucial for enhancing the overall performance of the sand-making machine.
The flow channels and feed control are equally important. The unobstructed flow of the impeller channels is a prerequisite for the efficient operation of the sand-making machine. Therefore, we must regularly remove blockages from the flow channels to maintain the smooth operation of the crushing chamber. Additionally, the size of the feed material directly affects the crushing efficiency and operational stability of the sand-making machine. To ensure effective crushing, we recommend controlling the feed material size between 3-4 centimeters. For materials with larger particles, consider adding primary crushing equipment or performing screen pre-processing to reduce their adverse impact on the operational stability of the sand-making machine. Furthermore, the moisture content of the material is another critical factor to monitor closely. Wet materials tend to stick to the interior of the equipment, causing blockages and operational imbalances. Therefore, it is necessary to regularly monitor the moisture content of the material and take corresponding measures, such as drying or pre-processing, to prevent wet materials from affecting the operational stability of the sand-making machine.
The stability of the mechanical structure is equally critical for the normal operation of the sand-making machine. Bearings, as the key components supporting the rotation of the rotor, directly affect the smooth operation of the equipment through their clearance size. Therefore, we need to regularly inspect bearing clearances, and promptly replace bearings that exhibit abnormal heating or damage. Additionally, the tension of the V-belts also affects the operational stability of the equipment. Excessive tightness or looseness may lead to increased equipment vibration, so we need to adjust the V-belts to an appropriate tension and ensure consistent lengths across all groups. Furthermore, the concentricity of the motor shaft and rotor shaft is another critical factor affecting the stability of equipment operation. To ensure concentricity between the two shafts, we must use professional alignment tools for correction to minimize vibration and noise.
Installation and foundation stability are also critical factors in ensuring the normal operation of sand-making machines. The horizontal installation status of the equipment significantly impacts its operational stability. Therefore, we must verify the horizontal installation status of the equipment and ensure it meets installation requirements. Additionally, the tightness of the anchor bolts directly affects the stability of the equipment. For loose or damaged anchor bolts, we need to replace them promptly and retighten them. Furthermore, the stability of the foundation is the foundation for ensuring the normal operation of the equipment. For unstable foundations, we need to reinforce them and regularly inspect the stability of the foundation structure to prevent equipment vibration and damage caused by unstable foundations.
In terms of daily maintenance, we also need to take a series of measures to ensure the normal operation of the sand-making machine. Daily inspections of the equipment are an important means of identifying potential issues. We need to closely monitor the operational status of the equipment and promptly identify and address potential issues such as abnormal metallic collision sounds. These abnormal sounds may indicate serious faults such as liner detachment. Additionally, regular maintenance is a critical component in ensuring the normal operation of the equipment. We need to regularly clean accumulated material inside the bearing seals and inspect the wear condition of wear-resistant components. For severely worn wear-resistant components, timely replacement is necessary to avoid their impact on equipment operational stability. Furthermore, preventive maintenance is an important means of enhancing equipment performance. For example, forming a uniform material lining can reduce resonance and noise generation, thereby improving the overall performance and service life of the equipment.
