Trough Belt Conveyors
Trough Belt Conveyors are designed to leverage the open frame and trough effect of the Rubber Belt Conveyors to fully contain the load of materials. Trough belt conveyors are the most widely used and efficient means of moving bulk materials .Trough conveyors for light to medium capacity systems . These conveyors are used in areas of cement, coal packing, food industry, sand & gravel and package handling.
Features
- Convey high tonnage of materials.
- Handle gradual inclines over long runs of 150 or more.
- Convey horizontal up to 28° incline depending on product.
- Require very little maintenance.
- High efficiency
- Almost resistance-free conveying
- High operational reliability
- The safety devices include an off-track detector, speed detector, and pull wire switch.
Design
Trough belt conveyor is that in which the belt forms a trough on the carrying side while running over idler rollers which are either in set of 5 rolls, 3 rolls or 2 rolls. The troughing angle adopted are: 15°, 20° , 25° , 30° , 35° , 40° , 45° . Return Idlers are usually straight roller type.
Transverse flexibility or rigidity of the belt is another significant consideration. It is important that the belt trough properly. The empty Conveyor Belts must make sufficient contact with the center roll in order to track properly.
Trough belt conveyors are used for higher capacity, higher speed requirement, and for handling bulk material of large lump size. It suitable for inclined or declined type conveyors.
Transition distance is defined as the distance from the center line of the first fully troughed idler roll to the center line of either the head or tail pulley. The distance from the pulley to the top of the wing idler is certainly greater than the distance from the pulley to the center roll of the troughing set. If the transition distance is too short, the edge of the belt can be over stretched. This will adversely affect the load support and belt life.