2015年9月15日星期二

Fixed Belt Conveyor

Description

Brief Introduction
Fixed Belt Conveyor is a friction drive conveyor transported materials continuously. Belt conveyor machine comprises the rack, conveyor belt, pulley, rollers, tensioning devices, driving unit and other components. It not only conveys material, but also can cooperate with various industrial equipments to form a rhythmic transport line.

►Features
1) Long distance
2) Easy maintenance
3) Steady operation
4) Convenient loading and unloading
5) Wide applications

►Advantage
The advantages of belt conveyor are 
   1.Large conveying capacity
   2.Long conveying distance
   3.Low horsepower compared with other types of conveyor
   4.Low cost of operating and maintenance
   5.Stable performance and reliable operation
   6.High universality and easy maintenance
   7.Labour saving
   8.No product degradation during conveying process
   9.Conveyor can have changes in elevation (horizontal, inclined or combination)
   10.Weight belt section can be added for continuous product weighing
   11.Belt conveyors can pivot at one end allowing the discharge to be moved over an arc (radial stacking).

Working PrinciplesBelt conveyor is composed by two endpoint pulleys and a closed conveyor belt.  The pulley that drives conveyor belt rotating is called drive pulley or transmission drum; the other one–only used to change conveyor belt movement direction–is called bend pulley. Drive pulley is driven by the motor through reducer, and conveyor belt dragging relies on the friction drag between the drive pulley and the conveyor belt. The drive pulleys are generally installed at the discharge end in order to increase traction and be easy to drag. Material is fed on the feed-side and landed on the rotating conveyor belt, then rely on the conveyor belt friction to be delivered to discharge end.

►Application
Long distance belt conveyor can transport bulk materials or bagged goods, such as stone, sand, coal, concrete, cement, gravel, fertilizer, mineral ore, limestone, coke, sawdust, wood chip, bulk material, grain, corn flakes, carbon black, component/part, etc.

Components of Belt Conveyor
Main components of a belt conveyor are:
   1.Belt is used for moving and supporting surface on which the conveyed material rides. It is the tractive element. The type of belt used need to depend on the nature of materials to be transported. 
   2.Idlers are the supports for the carrying and return stands of the belt.
   3.Drive that imparts power to one or more pulleys to move the belt and its loads.
   4.Structure is the support and maintains the alignments of the idlers and pulleys. Besides, it also supports the driving machinery. 
Other components included: 
   5.Loading chute or feeder chute that organizes the flow of material and directs it on the belt conveyor.
   6.Take-up device which is used to maintain the proper tension of the belt for effective power transmission.
   7.Belt cleaner that keeps the belt free from materials sticking to the belt.
   Tramp removal device, which is optionally used in case the conveyed material bears the chance of having tramp iron mixed with it and subsequent handling of the material, demands its removal. 
   8.Continuous weighing device for constantly measuring the load being carried by the conveyor belt.
   9.Discharge chutes to guide the discharged projectile to subsequent conveyor or other receiving point.
   10.Surge hopper and feeder, which is essential for supplying material to the conveyor at uniform rate when the supply of material is intermittent.
 
   11.Tripper arrangement to discharge material at different point or to other device.

Components of Belt Conveyor
 

Selection condition
1. What is the conveying material and its physical characteristics? such as bulk density, feeding size, temperature, mositure content etc.
2. What is the processing capacity of the belt conveyor?
3. What is the conveying length of the belt conveyor?

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