Grain silo nitrogen generators are primarily used for the preservation and storage of grains, which are essential basic necessities for human life. The storage and preservation of grains are critical issues related to people's livelihoods. Currently, the common methods used in grain storage involve measuring and controlling temperature and humidity, but the results are often unsatisfactory. Some grains still suffer damage from microbial activity, insect infestation, or their own respiratory processes. To protect grains, an effective method is to inject nitrogen into the silo to reduce the oxygen concentration in the air, thereby disrupting microbial biological activity, eliminating insect survival conditions, and inhibiting the grain's own respiration.

Rice is a processed grain that loses its protective layer after processing, making it less stable for storage. Its characteristics include: 1. It is prone to moisture absorption. 2. It is susceptible to "burst waist," meaning cracks appear on the rice grains. Controlled atmosphere storage, using nitrogen generators to fill silos with nitrogen for grain storage, can reduce costs and provide excellent preservation results. A practical method involves using molecular sieve nitrogen generators for negative pressure and cyclic replacement, filling sealed grain piles with nitrogen for 4 hours to remove oxygen and moisture from the grain piles. When the nitrogen concentration reaches about 99%, it can effectively eliminate mold.

Nitrogen-controlled grain storage refers to the use of nitrogen generation equipment to produce high-purity nitrogen, which is then delivered through nitrogen pipelines into well-sealed warehouses. This maintains a high nitrogen concentration in the warehouse over the long term, creating a low-oxygen environment unfavorable for the growth and reproduction of food pests and microorganisms. It prevents the growth and reproduction of harmful food pests until they suffocate and die, inhibits grain physiological respiration, and delays quality deterioration. Unlike traditional fumigation methods, nitrogen-controlled grain storage poses no harm to food or worker health, making it a green, environmentally friendly, safe, economical, and effective pest control technology.

Features of grain silo nitrogen generators: 1. Compact and lightweight design with a very tight structure, requiring no additional space and saving on base investment. 2. Standard installation with short installation time and low cost. 3. Simple operation, ready to use upon startup, fully controlled by PLC, with a startup time of less than 5 minutes. 4. Operates at room temperature with a simple process flow. 5. No additives or preservatives, environmentally friendly. 6. Mature technology, durable and long-lasting. 7. Uses inert gas to isolate air, significantly inhibiting the growth and reproduction of bacteria, mold, and other microorganisms, delaying food oxidation and spoilage, and effectively extending preservation time.

Nitrogen-filled preservation technology is internationally recognized as one of the green preservation technologies, integrating insecticide, pest prevention, mold prevention, and preservation into a single green and safe preservation method. Compared to conventional grain storage, nitrogen-filled grain storage effectively controls stored grain pests, addressing issues such as reliance on fumigants, increased pest resistance, increased pesticide use, and difficulties in pest control. It provides a new approach for managing pest resistance in grain storage.