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Description

Screw conveyors are of simple, relatively low cost construction compared to other

conveyor systems. Screw conveying systems consist of a helical flight fastened around a pipe or solid shaft, mounted within a tubular or U-shaped trough. As the screw rotates,material heaps up in front of the advancing flight and is pushed through the trough.Particles in the heap next to the flight surface are carried part way up the flight surface,and then flow down on the forward-moving side of the heap.

Products can be conveyed and elevated at the same time by mounting a screw conveyor at an incline. This is often desirable because it covers two operations with one piece of equipment therefore saving space and reducing downtime,maintenance cost, etc. A standard screw conveyor will often operate normally at angles up to 15º with only a small loss in capacity. Beyond that, adjustments and/or modifications are typically necessary.

Advantage

Tighter clearance between the screw and trough: 

This is especially true with granular,free flowing products such as dry, refined sugar.

Higher screw speed: 

This increases the product’s forward momentum and reduces fallback.

Shorter pitch screw flighting: 

This improves the relative angle between the each flight and the conveyed product.

Use of tubular trough or shrouds:

 Both act in the same way to surround the screw and prevent product from falling back over the top which tends to occur more as speed is increased.

1.Economical

2.Low maintenance

3.Multiple discharge locations

4.Easy to install

5.Quiet operation

6.No return run

7.Multiple configurations and applications

8.Various materials of construction

9.Can operate on inclines

10.Sanitary construction is available

11.Readily available / minimal lead times

12.Screw feeder for volume control

13.Standardization of parts

Design Considerations

In designing a HNLY Stainless Steel Screw Conveyor  for a specific purpose,

many questions must be answered in order to achieve optimal performance.

Information needed would be:
1. The material being conveyed,
2. Density in pounds per square inch,
3. The desired volume,
4. Speed and distance that need to be conveyed.
5. Other factors that can helpful to know are the abrasiveness, corrosiveness,

or viscosity of the material to be conveyed.
In answering those questions, the screw conveyor can then be designed with

the appropriate metal, diameter, pitch, length, and trough and motor requirements.

Technical Parameter

Application: