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Bulk materials handling by Screw Conveyors or Auger Conveyors

Bulk materials handling by Screw Conveyors or Auger Conveyors

Auger Screw conveyor

The Screw Conveyors are also known as Auger screw conveyor, which works on the principle of moving the materials from one place to another. They are the basic equipment for bulk material handling. A screw conveyor works on the mechanism that uses a rotating helical screw, called “flighting”, that is installed within a tube or trough, to move liquid or granular materials.

They usually consist of a trough or tube containing either a spiral blade coiled around a shaft, driven at one end and held at the other called a solid shaft screw. Other types are open helix or shaftless screws driven at one end and free at the other.

The rate of volume transfer is proportional to the rotation rate of the shaft. In industrial control applications, the device is often used as a variable rate feeder by varying the rotation rate of the shaft to deliver a measured rate or quantity of material into a process.

History of Screw conveyor

The first type of screw conveyor was the Archimedes’ screw, used since ancient times to pump irrigation water, but nowadays, our industries are becoming more and more productive and advance with the help of the latest machines. The positive push has improved the industrial sector. These machines carry out major operations in the industries and have helped greatly in reducing the manual workforce. They are great to help in many bulk handling industries. Nowadays, Screw conveyors are often used horizontally or at a slight incline, providing movement. They are capable of moving semi-solid materials, including food waste, wood chips, aggregates, cereal grains, animal feed, boiler ash, meat and bone meal, municipal solid waste, etc.

The screw conveyors are economical as well as, can be accommodated in small space, allows, utilizing an inclined screw conveyor for elevating or say conveying material. The angle of inclination as per the rule of thumb is 45 degrees or less, otherwise, the material will end up falling backward over the flighting and not conveying to the desired destination.

Screw conveyors are versatile and one of the most reliable cost-effective to convey a wide variety range of bulk material from dry free-flowing to wet sluggish dewatered biosolids.

The Screw conveyors can be designed to be operative in any of the positions, whether horizontal or vertical. If properly designed, it can be economical as well as, serve the purpose for many years to come uninterrupted, increasing the productivity

Types of screw conveyor for bulk materials handling

Types of screw conveyor for bulk materials handling

Basically, Screw Conveyors are meant to move or say transport bulk material. It is cost-effective with low maintenance. Due to such advantages, Screw Conveyors are gaining popularity and are in great demand in various industrial applications.

In the market, the Screw Conveyors are available in different shapes and sizes, as per the customer requirement or say they are tailored made to meet specific needs

Screw conveyors are made up of Stainless Steel to avoid rusting and serve for a longer period of time effectively. A helical screw blade inside the tube serves the main purpose,  used in the screw conveyor for making the process of moving easy with coarse materials.

This machine is fed with the materials at one end, which gets released at another end by the process of positive displacement. The coiled spiral blade around the rod is directed at one end and held at the other.

To serve the basic function of Screw conveyors, to transport bulk materials, many aspects has to be kept in mind. The screw conveyors manufacturers, have to manipulate and strive to design the best for the customers.  The layout of the machine should be perfect with excellent service and easy access. The main aim is to meet the needs of customers by providing reliable and durable, cost-effective, and long-lasting.

Types of screw conveyor

Screw conveyors are basically of four types, which are used in the industries.

  1. Horizontal Screw Conveyor

Horizontal screw conveyors, these types of conveyors are used broadly used for construction material. They are used almost for all types of materials whether free-flowing, light, lumpy, or heavy. Neo conveyors, aggregate screw conveyors manufacturer India

2. Inclined Screw Conveyor

Inclined screw conveyor– Their movement depends on the degree of inclination. The more it is inclined the lesser is the speed and its conveying efficiency.

3. Vertical Screw Conveyor

Vertical screw conveyor– They are cost-effective and fit in any space, you can say they need less area. They are used in various industries, such as food, chemical, wastewater treatment plants, etc.

4. Shaftless Screw Conveyor

Shaftless screw conveyor– They are helpful in easy transfer of material due to its structure, as the surface of the conveyor is non-clogging material moves smoothly.

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