Screw conveyor is a kind of conveying equipment which uses the rotation of the screw blade to push the granular materials forward along the shell. There are many kinds of screw conveyors, the structure are different, and the parameters are related and restricted each other, which makes the design and selection of screw conveyor complex and difficult.
The correct selection of a suitable screw conveyor is very important for the production and transportation of materials. Here are 8 suggestions on how to choose a suitable screw conveyor:
1. Materials Transported
Ordinary screw conveyor can be used for powder, granular and small block materials when horizontal or tilt angle is less than 20 °, spiral pipe conveyor can be used for high temperature and fluid materials, and vertical screw conveyor can be used for vertical lifting of powdery and fine-grained materials.
2. Conveying Capacity
The conveying capacity of screw conveyor refers to the amount of material transported per unit time. When matching with linear vibrating screen, rotary vibrating screen, ultrasonic vibrating screen and other vibrating screen equipment, the feed quantity of the vibrating screen should be calculated and the conveying quantity should be controlled.
Before the design and manufacture of a screw conveyor, it is necessary to consider whether it should be used with other equipment, so as to facilitate the reasonable design of the conveyor.
3. Conveying Speed
The conveying speed can be converted into conveying capacity. When the screw conveyor is running at high speed, attention should be paid to vibration, noise, start-up, sealing and so on. The conveying speed should not be too large to prevent the increase of dynamic load.
4. Conveyor Size
The size of screw conveyor include the width, diameter and length of the screw conveyor and the size of the motor reducer. These equipment specifications directly affects the conveying capacity of the screw conveyor.
5. Conveying Route
The length and inclination angle of the conveying line directly affect the total resistance and the required power of the conveyor. Now there are many types of conveyors, some are horizontal feeding, some are with a certain tilt angle, so the selection of screw conveyor should consider the application site.
6. Conveying Effect
As the conveying equipment of powder, particles and small bulk materials, the conveying effect of screw conveyor needs to be paid special attention by users.
Good conveying effects include the equipment operation (whether there is noise, sealing effect, whether there will be spreading, etc.), and the use of the equipment (whether it can be matched with other equipment, etc.).
Screw conveyor can choose speed regulation motor or ordinary motor to control the conveying speed and the amount of conveying per hour. The greater the number of revolutions, the greater the transport capacity.
8. Feed Hopper
Whether or not to add a hopper at the inlet and the size of the hopper are also factors to be considered.