Screw Press Dewaterer OS-180

The OS-180 screw press dewaterer is designed for the mechanical separation of liquid and solid fractions from organic materials and high-moisture waste. The dewatering process is carried out without the use of coagulants or chemical agents, helping to reduce operating costs and ensuring continuous operation during the separation process.

The dewaterer uses a screw conveyor and a slotted screen through which the liquid fraction is discharged. The solid fraction is transported by the screw towards the outlet, where it is additionally compressed. Depending on the type and properties of the processed material, the final moisture content of the solid fraction can be up to 60%.

Operating principle

Material with a moisture content of approximately 85–95% is fed into the working chamber of the dewaterer. The rotating screw transports the material along the screen while simultaneously applying pressure to it.

During the process, the liquid fraction passes through the screen openings and is discharged from the machine, while the solid fraction is transported towards the outlet and additionally compressed before leaving the machine.

The small clearance between the screw and the screen reduces the risk of clogging of the filtration surface and supports its self-cleaning effect, helping to maintain stable operating conditions.

Dewatering level adjustment

The OS-180 is equipped with an adjustable pressing and closing mechanism operated by a control knob and counterweights. This allows the pressure inside the working chamber to be adjusted according to the properties of the processed material.

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

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

Construction and design

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

The low rotational speed of the screw enables 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-180 screw press dewaterer can be used for the separation and dewatering of various high-moisture materials, including:

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

The machine can also be incorporated into installations used for preparing material for the production of compost, bedding or fuel.

Standard equipment

The standard OS-180 configuration includes:

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

Technical specifications

• Dimensions (L × W × H): 210 × 80 × 120 cm
• Weight: 340 kg
• Power: 4.0 + 3.0 kW
• Capacity: 5–6 m³/h
• Internal filter diameter: 180 mm
• Inlet diameter: 76 mm
• Overflow connection diameter: 76 mm
• Drain pipe diameter: 110 mm
• Screw material: stainless steel

The OS-180 is an efficient solution for the mechanical dewatering and separation of liquid and solid fractions from high-moisture materials. The adjustable pressing mechanism allows the dewatering intensity to be adapted to the properties of the processed material, while the stainless-steel construction provides suitable durability when operating in a wet environment.