Belt conveyor idler is an important component , roller tube , roller bearings, tapered roller tube quality is particularly important. Roller tube material should be taken to avoid wear and slurry type contaminants.

Steel industry coking plant , sintering or pelletizing plant , conveyor wet slag and slag , tape, hard and sharp on the adhesion of the material , steel pipe for idler wear quickly. Some drain tube by grinding , life is not over 3 months. The workaround is to ensure idlers flexibility and sealing performance under the premise of improving the wear resistance of the tube .

Workaround: molded UHMWPE roller, the roller wear resistance second only to car tire rubber , and the other with a light weight , no noise , corrosion rust, power, not to hurt the tape, easy to install, reduce labor intensity and other significant features ; wrapped rubber tire roller wear layer , a sharp change in the material and the metal pipe friction and wear mechanisms , wear resistance is increased 20-30 times .

Mud pollutant on roller pollution : coal mine water is large, tape adhesive slime , falling to the roller end faces of the stent and the idler shaft. First fall hardens pile up until the end of roller completely sealed . Continue falling slime that is formed with a labyrinth seal cavity height difference . Under the action of the pressure , slime easily enter the labyrinth seal contamination bearings.

Workaround: In the rotating closures do a projection of the " cleaner " , both on idlers'resistance no effect , you can clear the mud promptly falling down, reached into the mud without sealing effect.