No 'pulse' damage with new rotary seal
Page 50
If you've noticed an error in this article please click here to report it so we can fix it.
• A rotary seal system, the Air-Under, has been developed by Byron Bulk Transporters Ltd., Blackhorse Lane, London E17; it is said to eliminate the pulsating action which occurs in the "air-through" type of rotary feeder with resulting risk of material damage. Bulk carriers using the new system will be known as Byronair models.
The vehicle illustrated is a Bedford KM tipper artic of 14 tons payload, with Edbro gear. A Godfrey Roots-type compressor is normally driven by an Edbro 27 h.p. power take-off to supply the AirUnder rotary feeder but in this application an auxiliary engine is used.
The feeder comprises a six-bladed nylon-tipped impeller mounted in a circular casing and driven by an hydraulic motor which also drives twin contra-pitch feed augers. A rectangular air box is located under the impeller so that the air passes below the blades and is discharged at the lower end on the opposite side. When material has fallen into the slowly revolving blade it is passed into the air stream in a constant, steady flow.