Application fields and advantages and disadvantages of screw conveyors with or without shafts

Spiral conveyor is a mechanical equipment that uses the rotational motion of spiral blades to transport materials, widely used in various fields such as chemical engineering, food, and environmental protection. The following will provide a detailed introduction to the relevant knowledge of screw conveyors.

The screw conveyor is mainly composed of a conveying drum, spiral blades, and a driving device. The material enters the conveyor through the feeding port and moves along the axial direction of the conveyor under the push of the rotating spiral blades until it reaches the discharge port for discharge. Spiral conveyors can choose single axis or double axis according to conveying needs, as well as spiral blades of different diameters and lengths, to meet the requirements of different materials and conveying distances.

Main structure of screw conveyor:

1、 Conveyor drum: The conveyor drum is the main part of a screw conveyor, usually made of seamless steel pipes, with high strength and wear resistance. The interior of the conveyor drum is usually equipped with spiral blades to push the material forward.

2、 Spiral blades: Spiral blades are the main working components of spiral conveyors, usually made of high-strength materials such as stainless steel, carbon steel, etc. The shape and size of spiral blades depend on the characteristics of the material and the conveying requirements, and can rotate in one or both directions.

3、 Drive device: The drive device is the power source of the screw conveyor, usually using an electric motor or diesel engine as the power source, and transmitting the power to the screw blades through a reducer and transmission device.

4、 Inlet and outlet: The inlet and outlet are the parts that connect the screw conveyor to external equipment, and different connection methods and sizes can be selected according to actual needs.

Spiral conveyors are widely used in various fields, such as chemical engineering, food, etc. In the field of chemical engineering, screw conveyors can be used to transport powders, particles, viscous materials, etc; In the field of food and other industries, screw conveyors can be used to transport solid particles, powders, liquids, etc; In the field of environmental protection, screw conveyors can be used to treat waste and sewage.

Advantages and disadvantages of screw conveyor

advantage:

(1) Simple structure: The screw conveyor has a simple structure, mainly composed of a conveyor drum, spiral blades, and a driving device, with low manufacturing and maintenance costs.

(2) Strong adaptability: Spiral conveyors are suitable for various forms of materials, such as powders, particles, viscous materials, etc., and can also adapt to special environments such as high temperature, low temperature, and corrosion.

(3) Strong adjustability: The feed and discharge ports of the screw conveyor can be adjusted according to actual needs to meet different production process requirements.

(4) Good sealing: During the conveying process of the screw conveyor, the material is enclosed in the conveyor drum, avoiding material leakage and pollution.

(5) Energy saving and environmental protection: Spiral conveyors have low energy consumption, and the noise and vibration generated during their operation are also relatively small, with minimal impact on the surrounding environment.

Disadvantages:

(1) Limited conveying distance: The conveying distance of a screw conveyor is limited by the length of the equipment, and excessively long or short conveying distances may affect the stability and efficiency of the equipment.

(2) Not suitable for conveying materials with high humidity: Materials with high humidity are prone to adhere to spiral blades and conveyor belts, causing equipment blockage or unstable operation. Therefore, appropriate drying treatment should be carried out on the materials during use.

(3) Sensitive to overload: If the weight of the material exceeds the designed carrying capacity, it may cause equipment damage or chain breakage. Therefore, the weight of materials should be strictly controlled during use|