Chemical plant screw conveyor

Chemical plant screw conveyor in the form of conveying is divided into shaft screw conveyor and shaftless screw conveyor two kinds, in appearance is divided into U-type screw conveyor and pipe screw conveyor. Shafted screw conveyor is suitable for non-sticky dry powder materials and small granular materials. (For example: cement, fly ash, lime, grain, etc.) and shaftless screw conveyor is suitable for conveyor by the viscous and easily entangled materials. (For example: sludge, biomass, rubbish, etc.) The working principle of the screw conveyor is to rotate the screw blades will be pushed by the material and screw conveyor conveyor, so that the material does not rotate with the screw conveyor blades together with the force is the weight of the material itself and the friction of the screw conveyor casing on the material resistance. Screw conveyor rotating shaft welded screw blade, blade face type according to the different materials conveyed entity face type, belt face type, blade face type and other types. Screw conveyor screw shaft in the direction of material movement at the end of the thrust bearing in order to follow the material to the screw axial reaction force, in the longer length, should be added in the middle of the hanging bearing.

Working Principle

When the screw shaft rotates, due to the gravity of the material and its friction with the wall of the trough, the material can only move forward along the bottom of the trough of the conveyor under the push of the blade, and the situation is like a nut that can not be rotated to make a translational movement along the rotating screw. Material in the middle of the bearing movement, is to rely on the back of the advancing material thrust. Therefore, the transport of materials in the conveyor, is a kind of sliding movement. In order to make the screw shaft in a more favourable state of tension, generally will drive the device and the discharge port placed in the same end of the conveyor, and the inlet as far as possible on the other end of the tail near. Rotating screw blades will push the material and transport, so that the material does not rotate with the screw conveyor blade force is the weight of the material itself and the screw conveyor casing friction resistance of the material. According to the different materials conveyed, there are solid surface type, belt surface type, blade surface type and other types. Screw conveyor screw shaft in the direction of material movement at the end of the thrust bearing in order to follow the material to the screw axial reaction force, in the longer length, should be added in the middle of the hanging bearing.

Folding editorial technical characteristics

It consists of a driving device to close the trough box and a screw to push the coal in the trough box out by means of screw rotation.

The characteristics are: simple structure, small cross-section size, good sealing, work, low manufacturing cost, easy to intermediate loading and unloading, the conveying direction can be reversed, can also be conveyed to the opposite direction at the same time. In the process of conveying, the material can also be stirred, mixed, heated and cooled and other operations. The material flow can be adjusted through the loading and unloading gate. However, it is not suitable for conveying easily deteriorated, viscous, easily caked and large materials. The materials are easy to be broken during conveying, and the screw and trough are easy to be worn. The unit power is large. It is necessary to keep the sealing of the trough and the proper clearance between the screw and the trough in use.

Vertical screw conveyor is suitable for short-distance vertical conveying. The screw of bendable screw conveyor consists of flexible shaft and synthetic rubber blade, which is easy to bend and can be arbitrarily arranged according to the site or process requirements for space conveying. Screw conveyor blade has now pull type and the whole pull loss, now pull type can be made into any thickness and specification size, the whole pull type is not suitable for making non-standard spiral.

From the perspective of conveying material displacement direction, Hongtai screw conveyor is divided into horizontal screw conveyor and vertical screw conveyor two types, mainly used for a variety of powder, granular and small pieces of loose materials such as horizontal conveying and vertical lifting, the screw conveyor is not suitable for conveying perishable, viscous, easy to agglomerate, or high temperature, afraid of pressure, there are large corrosive materials.

Chemical plant screw conveyor generally by the conveyor body, inlet and outlet and drive device composed of three major parts; screw conveyor screw blade has entity screw surface, belt screw surface and blade screw surface three forms, of which, the blade screw surface application is relatively less, mainly used for the transport of viscosity and compressible materials, this screw hanging surface type, in the completion of the conveying process, at the same time, with and complete the materials of the Stirring, mixing and other functions.

Compared with other conveying equipments, chemical plant screw conveyor has the advantages of small cross-section size, good sealing performance, stable operation, multi-point loading and unloading and easy operation and maintenance.