GZ feeder is used to put materials in massive, or granular or powder from feed bin or chute to uniformly and continually or quantificationally feed into the receiving device, adjust the feeding quantity to realize the collective and automatic control of production process. It has small volume, little heavy, convenient installation, without rotating parts, free of lubricating, convenient maintenance, high frequency, and little consumption of electricity. It is widely used in ore mines, metallurgy, coal, chemicals, electricity, machinery and food industries. Its maximum production is 1000T with sealing type and opening type.