Belt Coal Feeder Damage
Common problems in coal feeder are when coal feeder having lost speed signal which indicates belt broke, but commonly found belt not broke, hence the proximity become the spot of root cause problem. Often found at the bottom side of coal feeder a lot of coal spill that resulted of proximity problem
What are the causes of the spill of coal stacking at tail pulley coal feeder so that proximity speed sensor is interrupted?
The damaged sidewall caused the coal to be spilled from the side of the belt massively, when the chain scrapper is unable to handle the massive volume of spills, the chain scrapper will be stuck and indicate overload, even a few cases found damage occurred in bearing scrapper and gearbox/motor.
Sidewall can be damage (apart) due to the bonding was not good when the process of manufacturer or due to miss selection of the belt type and it could also be caused by overload work and aging A common method when it’s found overload work belt is to accelerate the speed of conveyor and or decrease the inlet damper so that the load was distributed evenly on the belt and becomes lighter. If in the operation process found that sidewall damage (apart) immediately repairs on the broken sidewall.
Bonding sidewall-belt There are 2 method for sidewall belt coal feeder bonding: hot press (known as hot splice or vulcanizing) and cold join. Even though the hot press method has higher production cost than cold join, it’s doesn’t mean hot join is better than cold join, all is depending on usage and workload. When the work load of belt coal feeder indeed operated should be high, hence found bonding of sidewall belt apart (not torn), although it rarely occurs, then the choice of hot press became the best alternative.
Damage of Sidewall were influenced by rubber elasticity which linier with its hardness (Shore A), also the selection of pulley diameter will affect the tensile force received by the sidewall when passing through the outer side of pulley (pulley out radian), the smaller the pulley radian, the higher the tensile force received. Sidewall height above 5 cm must use fabric ply to withstand tensile force along pulley radian.
PT. Morgan Powerindo Amerta (MPA) has collaborated with domestic part manufacturers to increase the use of Indonesian products, as a form of love for the economic prosperity of the Republic of Indonesia
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