Optimising the operation of the roller sand making machine to improve the rate of finished products requires a comprehensive approach from the adjustment of equipment parameters, material management, maintenance and intelligent control and other aspects. The following are specific optimisation measures and technical points:
1. Precise regulation of equipment parameters
Roller clearance and pressure adjustment
Roller gap directly affects the particle size distribution of the material. By adjusting the gap size, the degree of material crushing can be controlled to avoid excessive crushing or insufficient crushing. For example, too small a gap can lead to over-crushing of the material, increasing the proportion of powder; too large a gap may reduce the yield. Combined with hydraulic or spring pressure regulating system (e.g. 11-18MPa pressure adjustment of Yuhui Heavy Industry equipment). It can adapt to different hardness materials and balance the crushing efficiency and finished product quality.
Match the rotating speed with the feeding quantity
The speed of rollers should be dynamically adjusted according to the hardness and size of materials. High speed may increase the output but it may lead to poor grain shape (e.g. more needles and flakes), while low speed may reduce the efficiency. At the same time, the feed volume should be uniform and stable to avoid overloading or idling of the equipment and ensure that the materials are fully crushed between the rollers.
2. Optimise material pre-treatment and feeding management
Pre-treatment of sand making materials
Screening, cleaning and grading of raw materials to remove large impurities and soil, to ensure uniform feed size (recommended to control within 4-5cm). Pre-treatment can reduce the wear and tear of roll sand making machine and improve crushing efficiency.
Material humidity control
Too high humidity of the material is easy to adhere to the rollers, leading to blockage and increased energy consumption; too low humidity will increase dust. Adjusting the humidity to a suitable range (usually less than 5% moisture content is recommended) through pre-drying or spraying can significantly improve the sand yield.
3. Equipment maintenance and wear-resistant design
Regular maintenance and lubrication
Regularly check the wear and tear of the rollers, bearings and other key parts of the roller sand making machine, and replace the roller skins made of high wear-resistant alloy (such as high manganese steel) in time. Keep the lubrication system clean to reduce friction loss and prolong equipment life.
Cleaning and discharge optimisation
Regularly clean the crushing chamber to avoid the residual material affecting the subsequent sand making effect. Optimise the design of the discharge system to ensure smooth discharge of the finished sand and reduce the chalking caused by secondary crushing.
4. Operation standardisation and personnel training
Standardised operation process
Strictly follow the instruction manual of the equipment to avoid equipment malfunction or decrease of finished product rate due to human misoperation. For example, feed the material evenly, avoid foreign objects entering the crushing chamber, and so on.
Regular skills training
Train operators to master equipment maintenance, parameter adjustment and troubleshooting skills, and improve the ability to match material characteristics with equipment performance.
