China (Mainland)
reciprocating feeders are still in use because it ensures a continuous and controlled feed rate, is low in cost, its drive mechanism is simple, it can handle wide range of miscellaneous materials including lumps, easy in assembly and disassembly and maintenance requirement is quite low. The challenge which we have taken via the project, is to design a drive mechanism for a reciprocating coal feeder. We call it a challenge because we have to design various intricate components like couplings, worm reducers, gearbox etc. We call it complicated since all the components are interdependent on each other to a great extent. So we cannot design anything randomly . We have to take into considerations the smallest of small things like the various forces acting, how each component can fail under various stress conditions. We have to optimize everything right from the motor selection, to speed reduction ratio selection, to the capacity of coal which we can handle. We are going to follow the above-mentioned strategies so that our project does not remain just a theory but can become a reality for industries.
Reciprocating feeder for sale in India
Reciprocating feeders for coal and the like are well known. A plate is reciprocated back and forth a rather short distance by means such as a crank operating from an electric motor. As the plate is moved in the forward or advancing direction coal from the hopper feeds onto the back part of the plate. When the plate is subsequently moved in the reverse or backward direction the coal cannot back up, and hence coal falls off the front of the plate onto a continuously moving conveyor belt arranged generally transversely thereof. Several such feeders generally are set up to feed onto the same conveyor belt. Although such feeders are run from the same multiphase electric power line, the motors are induction motors and do not operate in synchronism relative to one another, but rather drift in and out of proper time relation. Each feeder drops a pile of coal onto the conveyor belt. Synchronization of successive reciprocating feeders is such that piles are dropped at discrete intervals, whereby to provide a substantially continuous supply of coal on the moving conveyor belt. Unfortunately, in operation it often happens that a motor will drift, whereby piles of coal from two or more successive oscillating feeders will be dropped on top of one another, rather than spread out. Accordingly, even though the total amount of coal fed onto the conveyor belt remains the same, there will be local overloads causing deleterious effects, including at least on some occasions spillage and adverse affect on equipment fed by the reciprocating conveyor. In installations wherein one reciprocating feeder supplies a conveyor belt, only a part of the capacity of the blade is used.
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