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Screw Conveyor

Screw Conveyors are economical and space saving solution for transferring powders or granular materials from a lower to a higher level. The bulk material withdrawn from a silo, hopper, conveying or feeding device may be discharged by screw conveyor into a weigh hopper, into one or more bins or silos, or into another conveyor or conveying system.
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Related cases
 Screw conveyor
Screw conveyor for supporting concrete mixing plant
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Middle of Xinchang North Line, Xinxiang City, Henan Province, China
how it works

When the screw shaft rotates, due to the gravitational force of the material and the friction force generated with the wall of the tank body, the material can only move forward along the groove bottom of the conveyor under the pushing of the blade.It is like a non rotate nut along the rotating screw to do the offset movement. The movement of material in the middle bearing is based on the thrust of the material moving forward. Therefore, the transport of material in the conveyor is completely a kind of slip movement. 
In order to make the screw shaft in a more favorable tension state, the drive device and the discharge port are generally placed at the same end of the conveyor, and the feed port is placed as close as possible to the tail of the other end. The rotating spiral vane conveys the material while being conveyed, so that the force that the material does not rotate with the screw conveyor blade is the weight of the material itself and the friction resistance of the screw conveyor housing to the material. 
The face of the blade has different types such as solid face, belt face, and blade face depending on the material being conveyed. Spiral conveyor screw axis in the direction of material movement in the end of the thrust bearing with the material to the spiral of the axial reaction force, in the captain is longer, should add the middle of the hanging bearing.

If you need screw conveyor spare parts, such as universal joint, helicoid flighting, hanger bearing and screw conveyor reducer, please click here 
https://www.exctmach.com/products/spare-parts/screw-conveyor-spare-parts.html 

Features
Simple structure, small cross-section size.
Can be achieved multi-point of unloading and loading.
Ideal for conveying dry to semi-fluid bulk materials – free flowing to sluggish
Cost-effective when compared to other conveying devices such as belt or pneumatic.
Efficiently distributes bulk materials to various locations using multiple inlet and discharge points
Totally enclosed for dusty, corrosive or hazardous environments
Modular components enable easy adaptation to various problems
Trough in standard length modular flange sections
Flange end bearing assemblies protected against material infiltration by shaft seals
Fewer components minimize maintenance. The simple operation of a helicoid screw rotating inside a fixed tube keeps costs low, reliability high.

 

 

Specifications
 Screw Conveyor Technical Specifications
Model LS100 LS160 LS200 LS250 LS315 LS400 LS500 LS630 LS800 LS1000 LS1250
Screw diameter(mm) 100 160 200 250 315 400 500 630 800 1000 1250
Screw pitch(mm) 100 160 200 250 315 355 400 450 500 560 630
Technical spec n 140 112 100 90 80 71 63 50 40 32 25
Q 2.2 8 14 24 34 64 100 145 208 300 388
n 112 90 80 71 63 56 50 40 32 25 20
Q 1.7 7 12 20 26 52 80 116 165 230 320
n 90 71 63 56 50 45 40 32 25 20 16
Q 1.4 6 10 16 21 41 64 94 130 180 260
n 71 50 50 45 40 36 32 25 20 16 13
Q 1.1 4 7 13 16 34 52 80 110 150 200
Remark: n=rotate speed(rpm); Q=Capacity(m3/h); Filling factor=0.33

Selection instructions

Material to be processed: ______                                                    Handling capacity:______t/h
Bulk Density: ______t/m3                                                                 Conveying distance(from inlet to outlet):______m
Material size:______mm                                                                   Material temperature: ______℃;
Working environment temperature: ______ ℃                                 Material is corrosive or not: ______ (Ps. Yes or No)
Water content:______ %
Installation form is horizontal or inclined : ______ ;                          If it is inclined,what is the inclined degree______ °
Whether needing the supporting frame :______
(Ps. Yes or No)  
Upstream equipment (using for feed the material): ______  
Downstream equipment (using for discharge the material): ______  
Whether needing supporting equipment?______ (Ps. Yes or No) 
Working power supply: ______ ______ HZ                                   Quantity: ______  

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