The synonym bucket elevator is often used in technical literature. It is a vertical belt (or chain) conveyor with buckets, due to the continuous movement of which material is lifted. As a rule, the conveyor is placed in a rectangular pipe. The material in the lower part is picked up by buckets, moves vertically and is discharged through a pipe in a horizontal direction in the upper part of the hole and. The buckets go down upside down. The maximum height of material lifting, as a rule, does not exceed 60 m. It is used in feed, flour milling and chemical industries. There is also an inclined elevator - a conveying equipment intended for transporting coal and its beneficiation products at an angle of inclination of 60-82° to the horizon, with a humidity of up to 25%, as well as for transporting other bulk materials with similar properties. The bucket elevator is a closed canvas with a traction body that surrounds the driving and tensioning drums (stars), and buckets attached to it. The supporting and enclosing part of the elevator is a welded steel casing with loading and unloading nozzles. The drive has an electric motor, a reducer, clutches and a stop that prevents the reverse movement of the web. A screw or cargo tensioning device is used on the elevator. The speed of the web of low-speed elevators is up to 1 m/sec, high-speed elevators are up to 4 m/sec. The feed of bucket elevators is 5-500 m³/h, the lifting height H does not exceed 60 m. The main parameters of bucket elevators are the width VC, height h, reach A, useful capacity (up to the edge of the front wall) of the bucket and the distance (step) between the buckets ak. High-speed elevators have spaced deep and shallow buckets, for which ak = (2.5—3) h, and as a traction device — a conveyor rubber woven belt or a short-link chain. On slow-moving
for elevators closed (ak = h) buckets with edge guides and rounded bottom are used, attached by the side walls to two traction chains.
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