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What is the difference between a screw conveyor and a spiral conveyor?

Author: Alice

Oct. 21, 2024

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Tags: Machinery

Spiral or a Screw conveyor - Whats the difference?

Screw conveyors use a rotating screw within a tube or trough to push materials from one place to another, following a horizontal, vertical or inclined path. In contrast, spiral conveyors use a traditional belt-based system to either escalate goods up or down in one twisting motion. From these two definitions, there are several distinctions you can make.

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For starters, the direction in which the screw conveyor pushes a product defies all linear limits. This factor allows screw conveyor specialists such as Hills Electrical Group to create customised solutions for every possible angle.

However, the spiral conveyor is not so supple. It only lifts products vertically from one level to another, connecting overhead systems with those at ground level. To do so, the spiral conveyor uses a belt, whereas a screw conveyor uses its rotating screw thread for transportation.

Housed within a tube, the screw inside a screw conveyor goes to work within a closed-off environment. The atmosphere inside of the tube can be controlled, enabling products to be heated or dried as they move. Spiral conveyors don&#;t have this capability, as they carry materials out in the open.

Yet, the fly in the ointment with screw conveyors is the system can only carry liquids or small solids due to their design. With belts of all dimensions that can gently ship goods at all speeds, the spiral conveyor is much better for the careful movement of fragile cargo.

An Intro to Spiral Conveyors

What Are Spiral Conveyors? 

Spiral conveyors&#;also known as screw or worm conveyors&#;are used to transfer material across an inclined or flat plane. The amount of material transported is regulated by the size and power of the conveyor. They are often used in elevated conveyor lines and multilevel buildings.


How Do Spiral Conveyors Work?

Spiral conveyors utilize a rotating helical screw blade&#;i.e., flighting&#;to transport materials through a trough or tube component. The technology is based on the Archimedes screw, a device used to move water and other materials thousands of years ago. 

Key Features of Spiral Conveyors

In addition to the standard components found in all spiral conveyors, some of the additional feature options available include: 

  • Trough liners

  • Wear-resistant troughs

  • Wear shoes

  • Standard and special bearings

  • Standard and special drives

  • Ability to be made in sections

  • Engineered to fit within existing components

  • Ready to plug-in systems

  • Custom fabricated troughs

  • Variable pitch screws

Advantages of Spiral Conveyors

Compared to other material handling solutions, spiral conveyors offer a number of advantages. For example:

Spiral Conveyors vs. Case Lifts

Spiral conveyors are somewhat similar in function to case lifts. Both are designed to move products vertically within a facility rather than horizontally. However, there are many feature and function differences between the two that make them unique pieces of equipment. One of the main distinctions is that spiral conveyor&#;s transport loose bulk particles and powders, while case lifts transport cases, cartons, and other packaging containers. Spiral conveyors also use a more cutting-edged design that enables them to move loads with greater speed and reliability and require less maintenance, both of which can improve the productivity and profitability of a facility. 

Applications for Spiral Conveyors

Typical applications for spiral conveyors include: 

  • Bulk material handling

  • Machine tools

  • Metal chip removal

  • Off-road equipment

  • Sludge handling

Styles of Spiral Conveyors

There are many types of spiral conveyors available, each of which offers different advantages and disadvantages that make it suitable for distinct applications. Some of the common styles produced are: 

  • Horizontal

  • Incline

  • Non-standard diameter

  • Tapered OD

  • Tapered shaft

  • Variable pitch

Construction Materials for Spiral Conveyors

The screw component of spiral conveyors can be made from a variety of materials to suit specific material handling needs. Typical materials used include: 

  • Abrasion-resistant alloys

  • Hastelloy

  • Inconel

  • Mild steel

  • Monel

  • Nickel alloys

  • Stainless steel

Reinke & Schomann: Your Spiral Conveyor Experts

Want to learn more about spiral conveyors? The experts at Reinke & Schomann, Inc. are here to help! Equipped with extensive experience engineering and manufacturing custom spiral conveyors for use in various industrial applications, we have the knowledge to answer any questions you may have about these material handling systems. Additionally, if you need a spiral conveyor for your facility, we&#;ve got you covered.

For more information about spiral conveyors in general or our custom screw conveyor capabilities, contact us today. To discuss your equipment needs with one of our representatives, request a quote.

If you are looking for more details, kindly visit Large Screw Conveyor Spiral Chute.

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