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Screw Conveyor

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Introduction
Features
Working Principle
Technical Parameters
Application

Introduction

The screw conveyor is divided into two types in the form of conveying: the shaft screw conveyor and the shaftless screw conveyor., and it is divided into U-shaped screw conveyor and tubular screw conveyor in appearance. The shaft screw conveyor is suitable for non-sticky dry powder materials and small particle materials (such as cement, fly ash, lime, grain etc.), while the shaftless screw conveyor is suitable for conveying sticky and easily entangled materials. (e.g. sludge, biomass, garbage etc.) 
  Classification of Screw Conveyor and Feeder:
by Conveying Angle horizontal screw conveyor, inclined screw conveyor, vertical screw conveyor
by Conveying Form shaft screw conveyor, shaftless screw conveyor
by Shape U-shaped trough screw conveyor, tubular screw conveyor
 

Features

1. Large bearing capacity, safe and reliable

2. Strong adaptability, easy installation and maintenance, long service life.

3. The machine is small in size, high rotating speed, ensure rapid uniform transfer

4. Discharge end is equipped with cleaning device, low noise, strong adaptability, inlet and outlet location layout flexibility

5. Good sealing, the shell adopts the seamless steel tube, the end uses the flange connected to each other as a body, good rigidity.

Working Principle

Screw conveyor makes use of rotating screw transfering materials along the fixed casing. The rotating spiral blade moves the material to perform screw conveyance, and the force that makes the material not rotate with the screw blade is the frictional resistance of the material's own weight and the screw conveyor casing to the material. Spiral blades are welded to the rotary shaft of the screw conveyor. The surface shape of the blade has solid surface type, belt surface type, blade surface type and other types according to the different materials being conveyed. The screw shaft of the screw conveyor has a thrust bearing at the end of the material moving direction to give the screw axial reaction force with the material. When the machine length is long, an intermediate hanging bearing should be added.

Technical Parameters
LS Type 100 160 200 250 315 400 500 630 800 1000 1250
GX Type 200 250 300 400 500
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
Rotating Speed (r/min) 140 120 90 90 75 75 60 60 45 35 30
Conveying Capacity QΦ=0.33 (m3/h) 2.2 7.6 11 22 36.4 66.1 93.1 160 223 304 458
Power Pd 1=10m (KW) 1.1 1.5 2.2 2.4 3.2 5.1 4.1 8.6 12 16 24.4
Power Pd 1=30m (KW) 1.6 2.8 3.2 5.3 8.4 11 15.3 25.9 36 48 73.3
Rotating Speed (r/min) 120 90 75 75 60 60 45 45 35 30 20
Conveying Capacity QΦ=0.33 (m3/h) 1.9 5.7 18 18 29.1 52.9 69.8 125 174 261 305
Power Pd 1=10m (KW) 1.0 1.3 2.1 2.1 2.9 4.1 4.7 6.8 9.4 14.1 16.5
Power Pd 1=30m (KW) 1.5 2.3 4.5 4.5 7 8.9 11.6 20.4 28.3 42.2 49.5
Rotating Speed (r/min) 90 75 60 60 45 45 35 35 30 20 16
Conveying Capacity QΦ=0.33 (m3/h) 1.4 4.8 15 15 21.8 39.6 54.3 97 149 174 244
Power Pd 1=10m (KW) 0.9 1.2 1.9 1.9 2.5 3.4 4.3 5.4 8.1 9.5 13.3
Power Pd 1=30m (KW) 1.2 2.2 3.8 3.8 5.4 6.8 9.2 16 24.4 28.6 39.9
Rotating Speed (r/min) 75 60 45 45 35 35 30 30 20 16 13
Conveying Capacity QΦ=0.33 (m3/h) 1.2 3.8 11 11 17 31.7 46.5 73.0 99.3 139 199
Power Pd 1=10m (KW) 0.75 1.1 1.6 1.6 2.1 3.1 3.7 4.6 5.7 7.7 11
Power Pd 1=30m (KW) 1.1 1.8 3.4 3.4 4.4 5.6 8 14 16.7 23.2 33

Application

It is widely used in various industries, such as building materials, chemical industry, electric power, metallurgy, coal, grain etc. It is suitable for horizontal or inclined conveying powder, granulated and small lump materials, such as coal, ash, slag, cement, grain etc. Material temperature is less than 200℃.  Screw conveyor is not suitable for conveying materials those are perishable, big viscosity and easy to agglomerate. If conveying angle of inclination is oversize, please choose the GX series screw conveyor.

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