Live screw conveyor bottom for sawdust

Live screw conveyor bottom for sawdust designed and delivered by BEMA:

1. 100 m3 silo
2. 15 m2 live screw conveyor bottom

Key features of the live screw conveyor bottom:

1. The 4 pcs. screw feeders take material out to both sides of the bin. The reason is to have an equally level inside the silo during emptying
2. The live screw bottom can deliver a constant material flow rate out of the silo.
3. The live screw conveyor bottom is designed to 40-150 m3 material flow pr. hour.
4. The silo top was manufactured in sections for easier installation on-site.
5. The screw feeders have been design with a gradually increased pitch towards the discharge end. This results in uniform material extraction.

Designing of a live screw conveyor bottom requires engineering capabililties. Each application is unique

What to consider during design:

• Type of material to handle
• Transport capacity out of the screw conveyor bottom
• Required torque/power to run the live screw feeders
• How to fill the silo and how to handle the material from the live screw bottom
• What kind of documentation that is needed
• How to install it on-site

BEMA has engineering capabilities to assist in clarification of the application. We can based on the agreed design manufacture the application and deliver it to the customer side. When designing live screw conveyor bottoms, you shall always consider how to transport it to the final customer destination. In this process also how you want to install it on-site. Similar application for a live screw conveyor bottom.

FAQ – Live Screw Conveyor Bottom for Rough Sawdust

1. What is a live screw conveyor bottom used for

A live screw conveyor bottom is designed to extract material evenly from large silos, ensuring a controlled and continuous flow. In this case, the system handles rough sawdust from a 100 m³ silo, providing stable discharge for downstream processes. The solution is ideal for biomass, wood waste and other bulk materials requiring uniform emptying.

2. How do multiple screw feeders improve material extraction

The system uses four screw feeders that transport material to both sides of the silo. This design keeps the material level even during emptying and prevents funnel flow or bridging. The gradually increasing pitch toward the discharge end ensures uniform extraction and reduces mechanical stress.

3. What capacity can a live screw conveyor bottom deliver

Depending on the application, the live screw bottom can deliver between 40 and 150 m³ of material per hour. Capacity depends on material type, screw design and required flow rate. This makes the system suitable for both moderate and high‑volume operations.

4. What should be considered during the design phase

Key considerations include material characteristics, required transport capacity, torque and power needs, filling method, and how the material will be handled after discharge. Documentation requirements and on‑site installation conditions must also be evaluated to ensure a reliable and long‑lasting solution.

5. How does BEMA support installation and delivery

BEMA provides engineering support throughout the clarification and design process. The silo top and screw bottom can be manufactured in sections for easier transport and installation, ensuring smooth delivery to the customer’s site and efficient on‑site assembly.