Application of specific gravity separator in agriculture

Gravity separation is a method that uses gravity, buoyancy and other mechanical forces to cause particles of different gravity to produce different trajectories in the medium based on the difference in specific gravity between the material particles, thereby achieving the purpose of separation and screening. In agriculture, specific gravity selection has many applications, mainly reflected in the following aspects:

　　Seed selection

　　Improve seed quality: Through specific gravity selection, full, substantial, larger specific gravity seeds can be separated from impurities and inferior seeds with smaller specific gravity such as grains, insect-eaten grains, broken grains, etc., thereby improving the purity, germination rate and vitality of seeds, and laying a good foundation for high and stable yields of crops. For example, in the seed production of wheat, rice and other food crops, gravity selection can effectively remove impurities and unfilled seeds to ensure neat emergence and robust growth after sowing.

　　Promote variety improvement: During the seed selection process, specific gravity selection helps to accurately select seeds with excellent traits, providing support for variety improvement and optimization. Researchers can use specific gravity selection technology to select seeds with specific gravity that meet specific requirements from a large number of seeds, so as to cultivate new varieties that are more adaptable to the environment, have higher yields, and have better quality.

　　Grain cleaning and grading

　　Removal of impurities: Harvested grains are often mixed with impurities such as straw, soil, sand and gravel. Specific gravity selection can remove these impurities based on the difference in specific gravity between grains and impurities, improve the purity of the grains, and facilitate subsequent storage, processing and sales. For example, in the purchase and processing of corn, soybeans and other grains, gravity separation equipment can quickly and effectively separate impurities and improve the quality of grains.

　　Grading processing: According to the different specific gravity of grain particles, grains can also be graded. Classifying grains with similar proportions into the same grade is conducive to formulating different processing techniques and sales strategies according to different grades of grains, and improving the utilization value and economic benefits of grains. For example, in rice processing, rice is graded according to its fullness and specific gravity through specific gravity selection. Different grades of rice can be processed into rice of different qualities to meet the diverse needs of the market.

　　Screening of agricultural products processing raw materials

　　Improve processing quality: In some agricultural product processing industries, such as nut processing, oil crop processing, etc., specific gravity selection can be used to screen out high-quality raw materials. Taking peanut processing as an example, specific gravity selection can remove shriveled and moldy peanut kernels, ensuring the quality of raw materials used for oil extraction or making peanut products, thus improving the taste, flavor and nutritional value of the product.

　　Improve processing efficiency: After removing impurities and inferior raw materials, the quality of agricultural products entering the processing link is more uniform, which is conducive to the stable operation of processing equipment, reduces equipment failures and losses, and improves processing efficiency and production benefits. For example, in the processing of Camellia oleifera seeds, the Camellia oleifera seeds that have been selected by specific gravity will be uniform in size and have less impurities. The oil yield will be more stable during the pressing process, and the clogging and wear of the equipment will also be reduced.

　　Screening of Chinese medicinal materials

　　Ensure the quality of medicinal materials: Specific gravity selection can remove impurities, moldy products, non-medicinal parts, etc. from Chinese medicinal materials and retain high-quality medicinal materials. For example, in the initial processing of Chinese medicinal materials such as ginseng and wolfberry, gravity selection can remove defective products and impurities, improve the purity and quality of the medicinal materials, and ensure the efficacy and safety of the Chinese medicinal materials.

　　Promote the standardization of medicinal materials: In the standardized production and processing of Chinese medicinal materials, gravity selection helps to achieve standardized grading of medicinal materials. Classification and screening based on indicators such as the proportion of medicinal materials will make the quality of Chinese medicinal materials more stable and the specifications more uniform, which is conducive to the market circulation and quality supervision of Chinese medicinal materials.