Belt Feeder

Working Principle

The belt feeder is a feeding device developed to meet the demands of modern high-speed operations in applications such as under-bin feeding and underground coal bunkers.

Operating Principle

Material in the hopper enters the guide chute via the connecting section and falls onto the wire mesh conveyor belt. When the belt is stationary, the material comes to a stop due to internal friction, forming a static pile at the discharge outlet at a certain angle. Once the drive drum begins to rotate under external power, it sets the belt in motion; the moving belt carries the material toward the discharge outlet. After discharging at the outlet, the belt turns around for the return stroke, continuously conveying material out of the discharge opening and thereby completing the feeding process. A secondary sealing device provides a seal against any material that leaks through the gap between the guide chute and the belt. To adjust the feed rate, the speed of the output shaft can be varied by turning the speed-adjustment handwheel of the planetary friction-type stepless gearbox on the swing arm, thus changing the belt’s running speed and, consequently, the feed rate. Alternatively, a variable-frequency drive can be optionally installed to adjust the motor speed and thereby control the feed rate. During operation, the belt feeder’s primary load is supported by rolling bearings, resulting in low running resistance, reduced drive power requirements, and extended service life for all system components.

Structural Features

(1) This machine operates smoothly with low noise, features a high feed rate, a thick material layer, and a large feed capacity.

(2) The feed rate is continuously adjustable.

(3) Steel-wire-core, double-sided mesh-reinforced conveyor belts exhibit excellent impact resistance and tear resistance, with a typical service life of more than three years.

(4) The material-guiding chute is entirely constructed from 12-mm-thick steel plate, enhancing the equipment’s durability and service life.

(5) It consumes less power than reciprocating feeders, delivers significant energy savings, has lower costs, and exhibits excellent economic performance.

(6) The product features mature technology, high parts commonality, light weight, reliable performance, and easy maintenance.

(7) The auxiliary tooling is complete, fully functional, and widely adaptable.

(8) This model boasts excellent versatility and can be integrated with K-type reciprocating coal feeders and vibratory belt feeders. The system comprises a hopper interface, a material-guiding chute, a manual gate assembly, a drive drum assembly, a roller support assembly, a base frame, and a cleaning device, among other components. All components are bolted together for easy handling and assembly, allowing for both modular and integral configurations, and are suitable for both surface and underground applications.

(9) This equipment supports remote control, enabling automated production for the mining operation.