The chain-type unloader is a device used in the conveying system of solid materials (powders, granular materials, powdery granules) for unloading, packaging, mixing, dust removal, weighing, and quantitative conveying. Its working principle involves the rotation of a blade wheel with an equal division structure inside the housing, driven by a motor and reducer. Material is filled into the cavities of the blade wheel from the upper material storage or feeding device at the housing's top, and is discharged from the bottom of the housing as it rotates with the blade wheel. It can continuously and uniformly discharge downstream according to the requirements of the conveying system.

The chain-type discharger boasts most of the advantages of chain drive:

(1) Speed with no sliding loss, transmission efficiency up to 1%.

(2) Permits higher transmission ratios.

(3) Capable of transmitting greater power at low speeds.

(4) Operates effectively at higher temperatures or under harsh conditions (less affected by climate variations).

(5) Compact structure; with the same power transmission, the outline dimensions are smaller.