Basic introduction Vacuum feeder, also known as vacuum conveyor, is a dust-free closed pipeline conveying equipment that transmits particles and powder materials with the help of vacuum suction. It uses the air pressure difference between vacuum and ambient space to form gas flow in the pipeline and drive the movement of powder materials, so as to complete the conveying of powder. It is widely used in China's agricultural, heavy and chemical industries, as well as in the continuous improvement of foreign advanced technologies, such as vacuum, metallurgy and sideline industries. Vacuum conveying is a kind of closed pipeline conveying, which can eliminate dust environmental pollution, improve the working environment, reduce the pollution of environment and personnel to materials and improve the cleanliness; Due to the pipeline transportation, the occupied space is small, which can complete the powder transportation in a narrow space, making the workspace beautiful and generous; In particular, it is not limited by long and short distances. At the same time, the vacuum feeding machine can reduce the labor intensity and improve the work efficiency; It is the first choice for the transportation of most powder materials.