Screw press conveyors are well suited for pressing:

1. Organic material
2. Sludge
3. Compressible substances containing water to be drained

How is the screw press working?

• The press process is done in the screw rotor where the volume between the screw flights are reduced in the transport direction
• The outlet is reduced to create a back pressure to the media
• A perforated plate is used in the outlet zone where the water can drain out

A screw press conveyor is a mechanical machine and the press process is done completely mechanical.

Advantages of using a press screw conveyor

1. The machine is plain and do not require continously maintenance
2. The screw auger runs at low speed and require much less power compared to other process machines for separating
3. It is realtively easy to modify, the screw rotor and the perforated plate to optimize the press process

Requirements for using a press screw conveyor

1. The press process is hard to predict in advance
2. You must expect to make adjustments when you install the press screw depending on the material you want to press
3. Types of adjustments are typical:
   1. Changing the conical outlet
   2. Changing the holes in the perforated plate in the outlet zone
   3. Changing the screw auger

When you obtain the result you can accept, you will have a plain and very easy process which require low maintenance over time.

BEMA is not a specialist in handling processes, but we are able to assist in all aspects of the mechanical design:

1. Adjustments of the outlet
2. Delivering perforated plates with other hole geometry
3. Modification of the screw auger

See another example of a BEMA screw press machine here