Screw Conveyors for Biogas Plants
Wear-optimized screws for reliable conveying and a consistent material flow
Screws are among the components subject to the highest stress in feeding technology. Wear, material jams, or uneven conveying can quickly lead to disruptions in plant operations. We supply custom-fit screws and conveying systems for existing plants—tailored to the substrate, throughput, and operating conditions.
When augers wear out, the material flow in your plant is affected
Problems with the feeding mechanism are often caused not by the system as a whole, but by wear and tear or failure of individual components.
Declining production output
Uneven material flow and reduced efficiency
Blockages in the system
Downtime and manual interventions
High Wear
Short uptime and rising costs
Intermittent Plant Operation
Fluctuating Feed Rates to the Fermenter
Is your screw worn out? We're here to help.
The right screw is key to stable operation and consistent conveying
An Overview of Our Screw Conveyor Solutions
PRÄZI Screw Conveyors
| Flow Rate | Designed based on the substrate, screw geometry, and system configuration |
| Worm Diameter / Sizes | Sizes: 300 series / 500 series |
| Length Ranges | • Standard and custom lengths up to over 7,000 mm • Customized design based on the installation situation |
| Drive Technology | • Power range: approx. 1.5 kW to 15 kW • Speeds: 11–79 rpm • Manufacturer: NORD / SEW |
| Materials & Wear Protection | • Stainless steel (V2A) • Wear-optimized design • Optional hardfacing |
| System variants | • RSS / RSV / RSZ / TSZ screw types • Left- and right-hand versions • Various geometries and conveying concepts |
| Compatibility | • Designed to fit existing systems • Ideal for replacement and retrofitting |
| Upgrades & Modifications | • Trough attachments for specific systems • Adaptation to existing installation methods |
Your Consulting Partner for Components, Retrofits, and Optimization
Existing screw conveyor and conveying systems can be sustainably optimized through targeted upgrades and retrofits—for greater efficiency and stable plant operation.
We will be happy to advise you.
FAQ
Here you will find answers to frequently asked questions.
What role do screws play in the feeding process?
Screws ensure the continuous conveyance of substrates in the feeding process. They reliably transport the material from the feeder to the fermenter and are crucial for a uniform material flow and stable plant operation.
How can you tell if a screw conveyor is worn out or improperly designed?
Typical signs include a decrease in conveying capacity, an uneven flow of material, frequent blockages, or erratic system operation.
How can wear on augers in biogas plants be reduced?
Service life can be significantly extended through the use of wear-resistant materials, optimized geometries, and optional hardfacing. In addition, optimized substrate preparation reduces the mechanical stress on the screws.