Agricultural waste such as livestock manure and crop straw are rich in organic matter. By scientifically processing them into organic fertilizers, they can reduce environmental pollution and turn waste into treasure. The reasonable configuration of equipment for agricultural waste organic fertilizer production lines is the key to ensuring the quality and efficiency of organic fertilizer production. Below, we will provide a detailed introduction to the relevant equipment from various stages of the production process.

　　Raw material pretreatment equipment

　　Crushing equipment

　　Agricultural waste such as crop straw and tree branches have a large volume and hard texture, and cannot be directly used for fermentation and subsequent production. They need to be processed through crushing equipment first. The commonly used crushing equipment includes hammer crushers, blade crushers, etc. The hammer crusher crushes materials into smaller particles by striking, colliding, and rubbing them with high-speed rotating hammer blades; The blade crusher uses rotating blades to cut materials, with good crushing effect, and can adapt to the crushing needs of various materials. These devices can crush agricultural waste to the appropriate particle size, increase the surface area of the material, facilitate sufficient contact between microorganisms and materials during subsequent fermentation processes, and accelerate fermentation speed.

　　Mixed equipment

　　In order to ensure the uniformity of organic fertilizer raw materials and make the fermentation process more stable and efficient, it is necessary to use mixing equipment to thoroughly mix different raw materials. Common mixing equipment includes dual axis blade mixer, screw belt mixer, etc. The dual axis paddle mixer uses two blades on opposite rotating shafts to vigorously stir and flip materials, resulting in high mixing efficiency and good mixing uniformity; The screw belt mixer relies on the rotation of the screw belt to push the material to move axially and radially, achieving sufficient mixing of the material. Mixing equipment can evenly mix agricultural waste, livestock manure, added bacterial strains, auxiliary materials, etc., laying the foundation for subsequent fermentation processes.

　　Fermentation equipment

　　Tank fermentation equipment

　　Trough fermentation is a common fermentation method, and its equipment mainly includes fermentation tanks and turntables. Fermentation tanks are generally constructed using concrete or steel structures, with a certain length, width, and depth, capable of accommodating a large amount of fermentation materials. The flipping machine operates in the fermentation tank, flipping and scattering the materials through a rotating stirring device, allowing the materials to fully contact with the air, promoting aerobic respiration of microorganisms, accelerating fermentation speed, and preventing material accumulation, heating, mold growth, and odor generation. The investment in trough fermentation equipment is relatively small, the operation is simple, and it is suitable for small and medium-sized organic fertilizer production enterprises.

　　Tower fermentation equipment

　　Tower fermentation equipment is a three-dimensional fermentation device, usually composed of multiple layers of fermentation towers. The material enters from the top of the tower and undergoes fermentation as it falls layer by layer inside the tower. The tower is equipped with ventilation, stirring and other devices, which can accurately control parameters such as temperature, humidity and oxygen content during the fermentation process, making the fermentation process more stable and efficient. Tower fermentation equipment has a small footprint, short fermentation cycle, high degree of automation, and is suitable for large-scale organic fertilizer production, but the equipment investment cost is relatively high.

　　Post processing equipment

　　Screening equipment

　　After fermentation, there may be some partially fermented large blocks, impurities, or uneven particles in the material, which need to be screened by screening equipment. Common screening equipment includes vibrating screens, drum screens, etc. The vibrating screen uses the vibration generated by the vibration motor to make the material jump on the screen surface. Materials smaller than the screen hole size fall through the screen hole, while materials larger than the screen hole size are left on the screen surface and discharged, achieving material classification and screening; A drum screen is a device that uses a rotating drum to roll materials inside the drum. Materials that meet the size of the sieve holes leak out, achieving the purpose of screening. The screening equipment can screen out qualified materials and enter the subsequent processing steps, while unqualified materials are returned for reprocessing.

　　Granulation equipment

　　In order to facilitate the storage, transportation, and use of organic fertilizers, it is usually necessary to pelletize the screened materials. Common granulation equipment includes disc granulators, drum granulators, extrusion granulators, etc. The disc granulator uses a rotating disc to continuously roll and aggregate materials inside the disc, forming particles. It has the advantages of simple structure, easy operation, and moderate particle strength; The rotary drum granulator utilizes the rotation of the rotary drum to subject the material to frictional, gravitational, and centrifugal forces inside the drum, gradually forming particles with high production capacity; The extrusion granulator applies pressure to the material to extrude it through the holes of the mold, forming a strip like material, which is then cut into particles with regular shapes and high strength. Different granulation equipment is suitable for materials of different properties and production needs, and can be selected according to actual situations.

　　Drying equipment

　　The organic fertilizer granules after granulation have a high moisture content, which is not conducive to storage and transportation. Therefore, it is necessary to reduce their moisture content through drying equipment. Common drying equipment includes rotary dryers, fluidized bed dryers, etc. The rotary dryer uses a rotating cylinder to continuously flip the material inside, allowing it to fully contact with hot air and achieve the evaporation of moisture; Fluidized bed dryer uses hot air to dry materials in a fluidized state, with fast drying speed and high efficiency. Drying equipment can reduce the moisture content of organic fertilizer particles to an appropriate range, improving product quality and storage stability.

　　Cooling equipment

　　The temperature of the dried organic fertilizer particles is relatively high and requires cooling treatment to prevent particle agglomeration and reduce safety hazards during storage. Common cooling equipment includes a cooler, which works similarly to a dryer by exchanging heat between cold air and high-temperature particles to lower their temperature. The temperature of the cooled organic fertilizer particles is close to the ambient temperature, which facilitates subsequent packaging and storage.

　　Packaging equipment

　　The processed organic fertilizer products need to be packaged before they can be sold in the market. The packaging equipment mainly includes quantitative packaging scales, sealing machines, packaging machines, etc. The quantitative packaging scale can accurately control the packaging weight of organic fertilizers, ensuring that the weight of each bag of products is consistent; Sealing machine is used to seal packaged bags to prevent material leakage; The strapping machine can bundle the packaged products for easy handling and transportation. The automation level of packaging equipment continues to improve, enabling fully automated operations from measurement, packaging to sealing and bundling, improving production efficiency and packaging quality.

　　The above introduces the main equipment of the agricultural waste organic fertilizer production line. The equipment configuration may vary for production lines of different scales and demands. You can tell me the specific production scale and other requirements, and I will refine the equipment plan for you.

agricultural waste organic fertilizer production line