Screw Press Dewaterer OS-230

The OS-230 screw press dewaterer is designed for the mechanical processing of organic materials and waste with a high moisture content. Thanks to its screw system and slotted screen, it enables continuous separation of liquid from solid material without the use of coagulants or chemical agents.

Depending on the type and properties of the raw material, the final moisture content of the solid fraction can be as low as 60%. The machine also allows the process intensity to be adjusted to the properties of the processed material.

Operating principle

Material with a moisture content of approximately 85–95% is fed into the working chamber, where it is transported by a rotating screw along the slotted screen. As the material moves through the chamber, the liquid and solid fractions are mechanically separated.

The liquid fraction passes through the screen slots and is discharged from the machine. The solid fraction remains inside the chamber, where it is gradually compacted and then directed towards the outlet.

The small clearance between the screw and the screen helps clean the filtration surface and reduces the risk of clogging, ensuring stable operating conditions.

Dewatering adjustment

The OS-230 is equipped with an adjustable pressure and closing mechanism operated by a handwheel and counterweights. This allows the pressure inside the working chamber to be adjusted to the properties of the processed material.

Increasing the pressure enables more intensive dewatering and a lower moisture content of the solid fraction. Reducing the pressure, on the other hand, increases the machine throughput.

This solution allows the operating parameters to be adjusted according to the type and properties of the raw material.

Construction and materials

The screw and key working components are made of stainless steel, making the machine suitable for processing wet materials and operating in demanding conditions.

The low screw speed ensures quiet operation and helps reduce electricity consumption.

Control system

The dewaterer is equipped with a control cabinet providing basic system protection, including:

• overload protection,
• leakage current protection,
• undervoltage protection.

Applications

The OS-230 screw press dewaterer can be used for the separation and dewatering of various materials with a high water content, including:

• cattle and pig manure,
• poultry manure,
• sugar beet pulp,
• brewer's spent grain,
• distillery stillage,
• meat industry waste,
• food industry waste,
• paper industry waste.

The machine can also be used as part of installations for preparing material for compost, bedding or fuel production.

Standard equipment of the OS-230 includes:

• control cabinet,
• 10 m corrugated hose,
• raw material intake pipe, 180 × 45 cm.

Technical data

• Dimensions (L × W × H): 2300 × 900 × 1400 mm
• Weight: 520 kg
• Power: 5.5 + 3 kW
• Voltage: 380–400 V
• Capacity: 10–12 m³/h
• Internal filter diameter: 230 mm
• Inlet connection diameter: 76 mm
• Overflow connection diameter: 76 mm
• Discharge pipe diameter: 110 mm
• Screw material: stainless steel

The OS-230 is a solution for the continuous mechanical processing of materials with a high moisture content. The adjustable pressure mechanism allows the machine operation to be adapted to the properties of the raw material and the required parameters of the solid fraction, while the stainless-steel construction is suitable for demanding operating conditions.