Dewatering screw press conveyor
Dewatering screw press conveyor
Dewatering screw press conveyor designed and manufactured to drain water out of the transported material.
The dewatering press screw is very compact and designed for minor applications. Dewatering press screw conveyors are applicable to use for pressing:
- Organic material typical from a food manufacturing process
- Sludge
- Compressible substances containing water to be drained
What is the principle of a screw press auger?
- The press process is performed in the screw auger where the volume between the screw flights are reduced in the transport direction
- In the actual case the pitch of the screw flights are reduced in the transport direction
- The outlet is reduced to create a back pressure to the media – typical by using a coned outlet
- A perforated plate is used in the outlet zone where the water can drain out
The dewatering screw press conveyor is a mechanical machine and the press process is completely mechanical.
Advantages of using a mechanical press process
- The machine is plain and easy to maintain
- The screw rotor runs at low speed and the power consumption is low compared to other process machines for separating
- It is realtively easy to modify the different key components to optimize the press process
Issues to consider when using a press screw conveyor
- The press process is hard to predict in advance. It strongly depends on the material
- Adjustments must be expected when you start to work with dewatering press screw conveyors
- Adjustments are typically:
- Changing the size of the conical outlet
- Changing the holes in the perforated plate
- Changing the screw screw rotor with another pitch of the screw flights
When you obtain an acceptable result, you will have a very easy process which require low maintenance over time. BEMA is a machine manufacturing company. We are not experts in the processes, but we can assist in all aspects of the mechanical design:
- Adjustments of the outlet cone
- Delivering perforated plates with other hole geometry
- Modification of the screw rotor
See another example of BEMA press screw conveyor here
FAQ – Dewatering Screw Press Conveyor
1. What is a dewatering screw press conveyor used for
A dewatering screw press conveyor is designed to mechanically remove water from materials such as organic waste, sludge and compressible substances. It reduces moisture content efficiently and prepares the material for further processing or disposal .
2. How does the screw press dewatering process work
The press process occurs inside the screw auger, where the volume between the screw flights is gradually reduced. A coned outlet creates back pressure, and a perforated plate allows water to drain out, ensuring effective mechanical dewatering without chemical additives .
3. What are the advantages of using a mechanical dewatering press
Mechanical dewatering offers low energy consumption, simple maintenance and easy optimisation. The screw rotor runs at low speed, and key components can be modified to improve performance, making it a cost‑effective and reliable solution for many industries .
4. What should be considered when operating a dewatering screw press
The dewatering result depends heavily on the material, so adjustments are often required during commissioning. Typical modifications include changing the outlet cone size, altering perforated plate hole geometry or replacing the screw rotor with a different pitch to achieve optimal performance.
| Product type | Process equipment, Screw conveyor |
|---|---|
| Industry | Chemical and process industry, Food and beverage processing, Waste and recycling technology |
| Transported material | Biomass, Bulk material, Meat |
| Applied steel in product | Stainless steel |
| Surface treatment | Stainless steel – acid pickled |
