The metering screw conveyor is one of the known methods of conveying materials with the original design dating back more than two thousand years. Since the screw conveyor was commonly used to move grain, fine coal and other bulk materials a century ago, it has taken a place in the increasing field of material handling and processing.
How about the versatility of screw conveyors? The performance is good. For example, a screw conveyor can transport the meat vertically upwards, while the conveyor belt can only be lifted at an angle, otherwise the meat will start to slide backwards. In order to be good, the conveyor belt needs a relatively long length, and the screw can already complete the transmission within one square meter.
Another aspect of screw conveyors that scores relatively high is hygiene. The conveyor belt is an open system with many rotating parts and return sides. The screw conveyor is a closed system, generally there are no rotating parts (only the screw), and of course there is no return side. The conveyor is usually equipped with a hopper, and a tilt device can be used to tilt the product into the hopper. Due to the force exerted on the hopper/screw, a robust design is required.
Screw conveyors are designed to handle many materials and can perform many different functions. In terms of materials, screw conveyors can handle many things from low-speed materials to free-flowing materials. For industrial solid sludge and biosolids, where semi-solids are slow, you can use a screw conveyor without a screw-called a "shaftless screw conveyor".
The screw conveyor is also very flexible in design. For example, you can design a conveyor system with multiple outlets and entry points. This allows bulk materials to be sent to multiple locations, which can be controlled by sliding doors and valves that can adjust the flow in and out of the system.
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