Sand making machine is the main equipment for producing machine-made sand, bearings, rotors, impact blocks and impellers are its key parts. It is very important to operate the sand making machine correctly, maintaining and repairing key parts regularly during use. Only the reasonable use and maintenance of the sand making machine can prolong its production efficiency and service life.
Sand making machine must be no-load while starting. When it starts, the electric machinery will be probably burnt because of excessive pressure if there are some materials left in the crushing chamber, and even causing other damage to the crusher. Therefore, cleaning the debris in the crushing chamber first before starting, keeping no-load running and then putting materials inside. And next we will show you how to maintain and repair the sand making machine.
1. Bearing
The bearing of sand making machine undertakes full loads. Regular lubrication maintenance directly affects the service life and operating speed of the equipment. Therefore, keep regular lubrication and promise the lubricating oil must be clean and good sealed. It must be used in strict accordance with the instruction standard.
The bad working of bearing will directly affect the service life and efficiency of the sand making machine. Therefore, we need to use it carefully, checking and maintaining it regularly. We need to inject appropriate lubricating oil inside when the bearing has worked for 400 hours, cleaning when it has worked for 2000 hours, and replace a new one when it has worked for 7200 hours.
2. Rotor
The rotor is the part that drives the sand making machine to rotate at a high speed. In production, the top, inner and lower edges of the rotor are prone to be worn. Daily we check the machine’s operation, and regularly check whether the transmission triangle belt is tightened or not. If it is too loose or too tight, it should be adjusted properly to ensure that the belt is grouped and matched, keeping the length of each group is as consistent as possible. Vibration will be produced if the rotor is unbalanced during operation, and the rotor and bearings will be worn.
3. Impact block
The impact block is a part of sand making machine that wears more serious during working. The wearing reasons are also related to such as unsuitable material selection of impact block, unreasonable structural parameters or inappropriate material properties. Different kinds of sand making machines are corresponding to different impact blocks, so it is necessary to ensure that the sand making machine and impact blocks are matched. Wear is also related to the hardness of materials. If the materials’ hardness exceeds the bearing range of this machine, the friction between materials and impact block will be increased, resulting in the wear. In addition, the gap between impact block and impact plate should also be adjusted.
4. Impeller
The impeller is one of the most important parts of the sand making machine, and it is also a wear part. Protecting the impeller and improving its stability can not only improve working efficiency but also prolong the service life of sand making machine.
The rotation direction of the impeller device should be counterclockwise as viewed from the feed port, if not, we should adjust the wiring position of electric machinery. The feeding should be steady and continuous, and the size of river pebbles should be chosen strictly according to equipment regulations, oversized river pebbles will tip the balance and even resulting in the wear of impeller. Stop feeding before closing down, or it will crush and damage impeller. it is also necessary to check the wear situation of the impeller device, and replace the worn impeller in time to ensure the normal operation of production.
Post time: Mar-24-2022