The shaft screw conveyor operates using the principle of Archimedes' screw. The rotating blades of the conveyor worm are positioned at an angle to the axis of the tube, which creates a helical shape. When the blade rotates, it scoops up the material at the bottom of the tube and transports it upward. The material then moves along the tube or trough, where it can be discharged at the desired location.
One of the key advantages of the shaft screw conveyor is its ability to handle a wide range of materials, including fine powders, granules, and even larger objects. The conveyor can also be customized to suit specific material handling requirements, such as the need for heating or cooling. For example, some screw conveyors are designed with a jacketed tube that allows for the transfer of heated or cooled materials.
Another advantage of the shaft screw conveyor is its efficiency. The conveyor can transport materials at a relatively high rate, depending on the size and design of the worm. This makes it an ideal tool for bulk material handling applications that require high throughput rates.
The design of the shaft screw conveyor can vary depending on the specific application. Some conveyors are designed with a single shaft and blade, while others may have multiple shafts and blades. The geometry of the blades can also be customized to suit different material handling requirements. For example, some conveyors may have wider blades to accommodate larger materials, while others may have narrower blades for finer powders.
Overall, the shaft screw conveyor is a versatile tool that has a wide range of applications in various industries. Its ability to handle a wide range of materials and customize according to specific requirements make it a popular choice for material handling.