How the Fixed Belt Conveyor Roller Classify?

Roller is used to support the conveyor belt and carry of the material, to ensure the stability of the conveyor belt.
In general, the fixed belt conveyor roller is the following:
1.Trough roller: it is also known as carrying roller which is used for carrying bulk material;
2.Parallel roller: parallel upper roller is used for carrying materials, parallel lower roller is to support the return branch of the conveyor belt;
3.Self-aligning roller: it includes taper aligning supporting roller and friction aligning roller which are mainly used for adjusting the belt deviation to avoid S-shaped, so as to ensure the stable operation of conveyor belt;
4.Impact roller: it is installed in the lower part of the conveyor belt, which can reduce the impact of the conveyor belt to extend the service life of the conveyor belt;
5.Return roller: it supports the conveyor belt of lower branch,including parallel type, V type, inverse V type,etc. V and inverse V type roller can reduce the conveying belt deviation possibilities;
6.Transition roller: it is installed between the drum and the first set of roller, which makes the conveying belt gradually turns from through shape into or flat shape and reduce additional stress of the conveying band edge turns to trough shape due to the expansion, at the same time,it can prevent the material spreading phenomenon of conveyor belt.
In addition, the comb type roller and screw roller, which can remove the sticky material on conveyor belt to keep the conveyor belt clean. 

Five Reasons Why You Need Pay Attention To Conveyor Pulley

Rubber falling off the pulley is one of the common trouble of belt conveyor,after many years of practice and analysis, the reasons are as following:

1.The wrapping angle between pulley and belt is too small.
Peripheral force of driving pulley is transmitted to belt by friction.In running,in order to avoid slipping between pulley and belt,the belt tension is not allowed too big.According to Euler’s Formula,if the wrapping angle is smaller,the belt tension will be bigger,so it’s easy to slip.Slipping will speed up the wear of pulley.
2.Water or wet material stick on the belt surface.
When transporting material contents dust,like coal,ore and so on ,we usually use water spray to remove dust,thus water will be mixed with material and stick on belt surface,besides,rain will also lead water sticking on belt, once water sticks on belt surface,the friction coefficient between belt and pulley will decline which will cause slipping between belt and pulley,and speed up the wear of pulley.

conveyor pulley

3.The tension is too small.
Tension device is very important to conveyor pulley,if the tension is too small,it will lead to slip,causing wear of pulley,when the tension distance is not enough and the belt with permanent deformation,we can cut a segment of belt,then vulcanize again.
4.The failure of cleanser.
The failure of cleanser can result in the adhesive materials entering into belt and pulley,causing wear between belt and pulley, thus the rubber cover will fall off the pulley,and reduce the service life of belt.
5.Belt conveyor material scattering .
Belt conveyor material scattering is a common problem,when the material scatter during machine running,a portion of material will enter into belt and pulley,which will cause the wear of rubber surface and belt.

conveyor pulley