Via the inlet pipe, the product is fed on a vibrating feeder channel. The oscillating movement results in a layering effect, at the same time the product is conveyed uniformly and constantly over the entire width into the aspiration channel. Air flows through this channel from the bottom to the top. The product particles with a lighter specific weight such as husks or straw particles are discharge from the machine together with the air flow.
The cleaned main product leaves the machine at the bottom through an outlet funnel. By adjusting the total aspiration air volume with a throttle valve and an adjustable rear wall of the aspiration channel for the flow velocity, the aspiration channel can be optimally adjusted to the respective product and the respective capacity.
As the aspiration channel is available in two designs and different sizes, a wide capacity range can be covered both in cleaning and in the individual process steps.
Advantages of the aspiration channel:
- Low power consumption and high efficiency
- Low maintenance due to easy cleaning
- Precise air supply adjustment through large channel opening
To protect the downstream filter and the individual pipe runs, a cyclone is often installed downstream of the SCHULE aspiration channel. It is often used after a shelling machine to separate kernel and shell material, for example after an impact huller. It can also be used in combination with a circular screen for cleaning.