Tubular Screw Conveyor for Powder Transport

Tubular screw conveyor for powder transport, built as a system of multiple tubular screw conveyors.

What are the advantages of using a tubular screw conveyor?

• The housing of a tubular screw conveyor is typically a standard steel pipe, requiring significantly less machining compared to the housing of a trough screw conveyor
• A tubular screw conveyor is often a more cost-effective solution compared to a trough screw conveyor
• The outer tube fully encloses the screw rotor, keeping the material contained during transport
• A tubular screw conveyor is generally easier to install compared to a trough screw conveyor – the outer tube can be secured with a clamp around the tube, after which legs or suspensions can be welded on
• A tubular screw conveyor can be made more sealed compared to a trough screw conveyor, as there are no flat surfaces that require sealing
• A tubular screw conveyor is more compact in terms of space compared to a trough screw conveyor and is therefore suitable where space is limited

What are the limitations of a tubular screw conveyor?

• A tubular screw conveyor cannot be opened in the same way as a trough screw conveyor
• Where hygiene requirements according to EF-1934/2004 apply, it is possible to install CIP nozzles in a trough screw conveyor, but it is subsequently difficult to inspect whether the cleaning effect is complete
• The screw rotor in a tubular screw conveyor must generally be removed from the machine for service (e.g., replacing wear edges or flights). A trough screw conveyor offers more service options
• A tubular screw conveyor can be equipped with inspection hatches, but it is not possible to expose the entire length of the screw rotor

Why was a tubular screw conveyor solution chosen for powder transport in this case?

• In this case, the powder is suitable for transport in a tubular screw conveyor because it is dry and does not tend to cause blockages
• A highly sealed transport solution is required to ensure the best possible working environment for operators handling powder feeding into the system
• The installation space is very limited, making a compact tubular screw conveyor the optimal solution

What did BEMA deliver in this tubular screw conveyor system?

• BEMA designed the tubular screw conveyor including supports
• Manufactured the tubular screw conveyor in the workshop
• Delivered complete documentation together with the tubular screw conveyor

In this case, BEMA delivered a complete solution including engineering, manufacturing of the tubular screw conveyor, and a full documentation package.

FAQ: Tubular Screw Conveyor for Powder Transport

What is the purpose of a tubular screw conveyor for powder transport?

A tubular screw conveyor for powder transport is designed to move dry powder safely and efficiently through a closed pipe system. The design enables transport without spillage or environmental impact, creating a better working environment and a stable process.

What are the advantages of choosing a tubular screw conveyor?

A tubular screw conveyor requires less machining than a trough screw conveyor, as the housing consists of a standard steel pipe. It is more compact, easier to install, and can be made more sealed since there are no flat surfaces requiring sealing. The outer tube fully encloses the screw rotor and keeps the material securely contained during transport.

What are the limitations of a tubular screw conveyor?

A tubular screw conveyor cannot be opened like a trough screw conveyor, and servicing typically requires removal of the screw rotor. Inspection hatches can be added, but the entire rotor cannot be exposed. Hygiene requirements such as EF-1934/2004 are generally easier to handle in a trough screw conveyor than in a tubular screw conveyor.

Why was this solution chosen for powder transport?

The transported powder is dry and well-suited for a tubular screw conveyor, and a sealed solution is required to ensure a safe working environment. Additionally, the installation area is very limited, making the compact tubular screw conveyor the optimal solution.

What did BEMA deliver in this solution?

BEMA was responsible for the design, manufacturing, and delivery of the tubular screw conveyor, including supports and a complete documentation package. The solution was delivered as a full engineering and production project.