Peanut peeling is a crucial step in peanut processing, and the material of the core component of a dry type peanut peeler machine—the sand roller—directly affects the peeling effect and the machine’s lifespan. Currently, most mainstream dry type peanut peeling machines on the market use emery for their sand rollers. So, why is emery the preferred material?
1. High hardness and wear resistance
Emery is a very hard material, second only to diamond. In the process of peanut peeling, the sand roller needs to rub repeatedly with the peanut shell to remove the skin. If the hardness of the material is insufficient, the sand roller will wear quickly, which will shorten the service life of the equipment. The high hardness of emery ensures that it can still maintain a good peeling effect after long-term use, which greatly improves the durability of the equipment.
2. Proper balance between “cutting” and “friction”
Peanut peeling needs a certain “cutting force” to effectively remove the shell, but also needs appropriate friction to protect the peanut kernel from being damaged. The particle structure of emery makes it provide enough cutting force without causing excessive damage to peanut kernels, thus achieving a good balance between “cutting” and “friction”. This characteristic makes emery the best choice for the sand roller of peanut peeling machine.
3. Heat resistance and chemical stability
During long-term operation, the sand roller will generate some heat due to friction. If the thermal stability of the material is poor, it may lead to performance degradation or even damage. In addition, peanut shells may contain certain oils or other chemicals, which requires the chemical stability of the materials. Emery has excellent heat resistance and chemical stability, and can keep its performance stable under high temperature and complex environment.
4. Cost and mature technology
Although emery has high hardness, its manufacturing process is very mature and its cost is relatively controllable. Durability and long service life can significantly reduce maintenance and replacement costs. For the peanut peeler machine that needs long-term operation, this material selection is actually a more economical investment.
To sum up, emery material is the best choice for dry type peanut peeler machine with its multiple advantages. In the future, with the further development of technology, we have reason to believe that emery material will be applied in more fields and bring more convenience and innovation to the food processing industry.