Osborn Pan Feeders (Volumetric Feeders)
The main feature of this feeder is the low power consumption, low noise and little maintenance required. Osborn Pan Feeders are generally installed at a 10 degree downslope to provide the best efficiency for the free flow of material. Fitted with replaceable liners and can be floor or suspension mounted.
Skirt boards should be fitted to give an approximate clearance of 30 mm minimum between the deck and the side plates when operating with 4 pole motors and 60 mm for feeders with 6 pole motors. These recommended clearances are measured at the feed end of the deck and will increase to approximately double at the discharge end.
Of significant importance when installing an Osborn Pan Feeder is the design of the feed hopper. (see hopper /chute design). Incorrect hopper design will cause the feeder to underperform to the specified duties. Osborn Pan Feeders are manufactured in many different widths and lengths from 300 mm wide up to a 2400 mm wide and up to 4000 mm long.
Osborn feeders all work on the same principle, that being the extraction of materials from under crushers, bins, hoppers etc, or fed by a conveyor with a regulated flow to promote a steady supply to maximise production in the processing plant.
Sometimes fed by a dump truck or a front end loader, or directly from under a stockpile. Whatever type of feed is required and dependent upon the type of the feeder installed, the feed rate is controlled by the machines vibration frequency and often the controls, which can be manual or automatic and can be programmed to receive a signal from a PLC.