Double horizontal screw conveyor

Horizontal screw conveyor designed for transportation of waste plastic material as a fuel for the process industry.

• The horizontal screw conveyor is manufactured to be a plain working horse for material transportation
• The screw conveyor is designed for easy maintenance of moving parts
• The screw rotors are manufactured in 2 parts to ensure easy installation when being replaced
• Manufactured with displacement elements in the top to improve the material transport – the material is reletively light

Why use a double screw conveyor?

1. To increase the material flow without increasing the height of the screw conveyor
2. To make the screw conveyor redundant. If one screw auger fails, the other can still be used
3. To add different transportation possibilities into the material transport

Se another example a double screw conveyor

During the design phase, BEMA has assisted the client with capacity calculation for different speed of the screw augers on the horizontal screw conveyor solution. BEMA has a design department that is able to help and assist customer with engineering caluculation on screw conveyors to ensure optimal design due to actual transportation requirements. As a customer kindly note, that BEMA has capabilities to assist with all relevant engineering calculation when it comes to screw conveyor design and material transport.

After manufacturing of the different parts of the screw conveyor, BEMA has assembled the machine and made a test-run to document that all rotating parts are functioning. During this process pictures and videos have been made as part of the quality documentation. BEMA has described procedures for FAT-tests of all screw conveyors. This is described in our ISO-9001 quality system.

FAQ for the Horizontal Double Screw Conveyor

1. What is the purpose of a horizontal double screw conveyor?

A horizontal double screw conveyor is designed for stable and efficient transport of light bulk materials, such as waste plastic used as fuel in the process industry. It functions as a durable “working horse” that ensures continuous material flow while allowing easy maintenance and long service life.

2. Why choose a double screw conveyor instead of a single screw?

A double screw configuration offers several advantages:

• Higher material flow without increasing the conveyor height
• Redundancy, allowing one auger to operate if the other fails
• Flexible transport options, enabling different flow patterns or material handling strategies These benefits make it ideal for installations with limited space or high uptime requirements.

3. What engineering support does BEMA provide during the design phase?

BEMA assists with capacity calculations, evaluating different screw speeds and transport scenarios to ensure optimal performance. The design department prepares detailed engineering documentation and supports all relevant calculations related to screw conveyor design and material transport, ensuring the solution matches the customer’s actual requirements.

4. How does BEMA ensure quality and functionality before delivery?

After manufacturing, BEMA assembles the complete conveyor and performs a test‑run to document correct operation of all rotating parts. Photos and videos are recorded as part of the quality documentation. All screw conveyors undergo FAT testing according to BEMA’s ISO‑9001 procedures, ensuring reliable performance before shipment.