Conveying machinery
Conveying machinery can be divided into bulk material conveying machinery (such as: belt conveyor、screw conveyor, bucket elevator, large inclination conveyor, etc.) and logistics conveying machinery (such as: assembly line, assembly line equipment, conveyor line, hanging conveyor line, lift, pneumatic lift, rack lift, scissor type, lift, roller conveyor, lift).
Commonly used belt conveyors can be divided into: ordinary canvas core belt conveyor, steel rope core high-strength belt conveyor, full explosion-proof downward belt conveyor, flame-retardant belt conveyor, two-speed double-transport belt conveyor, reversible mobile belt conveyor, cold-resistant belt conveyor and so on.
The belt conveyor is mainly composed of a frame, a conveyor belt, a belt roller, a tensioning device, a transmission device, etc.
The main technical parameters of the belt conveyor
|
Tape width (mm) |
Conveying length(m) power(kw) |
Conveying speed (m/s) |
Conveying volume(t/h) |
||
|
500 |
≤12 3 |
20-30 4-5.5 |
20-30 5.5-7.5 |
1.3-1.6 |
78-191 |
|
650 |
≤12 4 |
12-20 5.5 |
20-30 7.5-11 |
1.3-1.6 |
131-323 |
|
800 |
≤6 4 |
6-15 5.5 |
15-30 7.5-15 |
1.3-1.6 |
278-546 |
|
1000 |
≤10 5.5 |
10-20 7.5-11 |
20-40 11-12 |
1.3-2.0 |
435-853 |
|
1200 |
≤10 7.5 |
10-20 11 |
20-40 15-30 |
1.3-2.0 |
655-1284 |
（2）Screw conveyor
The screw conveyor, commonly known as auger, is suitable for horizontal conveying, inclined conveying, vertical conveying and other forms of granular or powdery materials. The conveying distance varies according to the deformity, generally from 2 meters to 70 meters.
Conveying principle: The rotating spiral blades will move the material and carry out the screw conveyor conveying. The force that keeps the material from rotating with the blades of the screw conveyor is the weight of the material itself and the frictional resistance of the screw conveyor casing to the material.
Structural features: The rotating shaft of the screw conveyor is welded with spiral blades, and the surface type of the blade has solid surface type, belt surface type, blade surface type and other types according to the different conveyed materials. The screw shaft of the screw conveyor has a thrust bearing at the end of the material movement direction to give the axial reaction force of the screw with the material, and when the machine length is long, the middle hanging bearing should be added.
A double screw conveyor is a screw conveyor with two rotating shafts welded with rotating blades. To put it bluntly, it is to organically combine two screw conveyors to form a screw conveyor.
The rotation direction of the rotating shaft of the screw conveyor determines the conveying direction of the material, but the general screw conveyor is designed according to the single conveying to design the rotating blades. When conveying in reverse, the service life of the conveyor will be greatly reduced.
(3) Bucket elevator
The bucket elevator uses a series of hoppers that are evenly fixed to the endless traction member to vertically lift the continuous conveying machinery of the material.
Bucket elevator has a large conveying capacity, high lifting height, stable and reliable operation, long life significant advantages, its main performance and parameters in line with JB3926----85 "vertical bucket elevator" (the standard equivalent to reference to international standards and foreign advanced standards), traction ring chain in line with MT36----80 "mining high-strength ring chain", this elevator is suitable for conveying powdery, granular and small pieces of non-abrasive and abrasive materials, such as: coal, cement, stones, sand, clay, ore, etc., Since the traction mechanism of the hoist is a circular chain, it is allowed to convey materials with higher temperatures (material temperatures up to 250 °C). Generally, the conveying height can reach up to 40 meters.
The working principle of the bucket elevator: the bucket elevator has a simple structure, stable operation, pick-up charging, mixed or gravity discharge, the bucket elevator rim adopts a combination of sprockets, which is easy to replace, and the sprocket rim has a long life after special treatment, and the lower part can maintain a constant tension if the gravity automatic tensioning device is used to avoid slipping or disarming, and at the same time, when the hopper is blocked, there is a certain tolerance to effectively protect the moving parts, and the material temperature does not exceed 250 °C.
