The hopper screw conveyor is mainly used for conveying powdery and granular materials between inclinations. The feeding size is less than 5mm. The silo and conveying pipe are made of stainless steel (materials can be customized according to customer requirements) to ensure that the raw materials are completely pollution-free during the conveying process. , The conveying pipeline adopts a closed design, which can effectively prevent dust and effectively isolate materials with high hygiene requirements or strong odors. It has the characteristics of uniform feeding, good sealing, and no dust pollution.