Structural Principle of Twin Screw Feeder

The structural principle of a twin screw feeder is based on the intermeshing action of two screws, which rotate in opposite directions within a trough or tube. The screws are typically mounted on a common shaft, which is driven by a motor or other power source.

As the screws rotate, they create a pocket between the flights (or threads) that moves along the length of the screws. The material being fed is introduced into the pocket at the inlet end of the feeder, and is transported along the length of the screws by the intermeshing action of the flights.

The screws are designed with a variable pitch and diameter, which allows for a controlled and consistent flow of material through the feeder. The pitch refers to the distance between the flights, while the diameter refers to the size of the screws. The variable pitch and diameter allow for a gradual increase in the volume of the pocket as it moves along the length of the screws, which helps to prevent overfeeding or underfeeding of the material.

The trough or tube that houses the screws is typically designed with a cover or lid, which helps to prevent the material from escaping and also protects the screws from external contamination. The feeder may also be equipped with various accessories, such as a hopper, discharge chute, or agitator, depending on the specific application requirements.

Overall, the structural principle of a twin screw feeder is based on the intermeshing action of two screws, which creates a controlled and consistent flow of material through the feeder.