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Screw conveyors are essential equipment used in various industries for transporting bulk materials efficiently. They come in different types based on their flow path, making them versatile for a wide range of applications. Here, we will explore the various types of screw conveyors and their characteristics.
The Pitch Efficiency chart shows the relative conveying efficiency at different degrees of incline and pitch configurations. As the degree of incline increases, reduced pitch screws (1/2 and 2/3) are more efficient than full pitch screws. The combination of reduced pitch screws (1/2 and 2/3) and tubular housings provide
Horizontal Screw Conveyor
The horizontal screw conveyor is the most common type of screw conveyor and is used to move material horizontally. It consists of a helical screw blade that rotates within a trough, pushing the material forward. This type of screw conveyor is ideal for applications where the material needs to be moved from one point to another in a straight line.
Inclined Screw Conveyor
Inclined screw conveyors are designed to move material at an incline or vertically. They feature a screw blade that is angled to lift the material as it rotates. This type of screw conveyor is often used in applications where space is limited, and material needs to be transported to a higher or lower level.
Vertical Screw Conveyor
Vertical screw conveyors are used to move material vertically. They are similar to inclined screw conveyors but are designed specifically for vertical transport. The screw blade is typically shorter and steeper to effectively lift the material to the desired height. Vertical screw conveyors are commonly used in applications where material needs to be elevated to different levels within a processing plant.
Shaftless Screw Conveyor
Shaftless screw conveyors are designed without a central shaft, allowing for the conveyance of larger and stickier materials. The absence of a shaft eliminates the risk of material build-up around the shaft, making shaftless screw conveyors ideal for handling materials that are prone to clogging. They are commonly used in wastewater treatment plants, food processing facilities, and other industries where sticky or abrasive materials need to be transported.
Flexible Screw Conveyor
Flexible screw conveyors are versatile and can be easily configured to suit various applications. They consist of a flexible screw enclosed in a tube, allowing for the conveyance of materials around corners and obstacles. Flexible screw conveyors are ideal for applications where the layout of the plant requires a conveyor that can adapt to different angles and directions.
U-Trough Screw Conveyor
U-trough screw conveyors feature a U-shaped trough that houses the screw blade, providing additional support and containment for the material being transported. This type of screw conveyor is commonly used in applications where the material needs to be contained within the trough to prevent spillage. U-trough screw conveyors are suitable for handling a wide range of materials, including powders, granules, and pellets.
Tubular Screw Conveyor
Tubular screw conveyors are enclosed in a tube, providing a sealed environment for transporting materials. This type of screw conveyor is ideal for applications where dust containment and product integrity are essential. Tubular screw conveyors are commonly used in industries such as pharmaceuticals, food processing, and chemicals, where hygiene and product quality are critical.
Bidirectional Screw Conveyor
The horsepower requirements for inclined screw conveyors increase with the degree of incline. The Horsepower Factor (Fi) is incorporated into the standard screw conveyor horsepower calculations to compensate for the additional
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screw conveyor types|screw conveyor size chart