Designing and production of belt elevators
The vertical belt-type bucket elevators are used for lifting of various free-flowing and bulk materials from the loading point to the unloading point.
At the present time “Stromizmeritel” Closed JSC manufactures elevators with the bucket width of 160, 250, 320, 400, 650 mm, capacity of 11.5 up to 165m3/hour and lift of 8 up to 50 m. The buckets discharge is centrifugal.
The elevators are equipped with gear motors, bearing assemblies and belts manufactured by the leading world producers. The tension of the elevator traction part is maintained at the power-drive station, which guarantees minimal “dead areas” when the buckets turn the driven pulley and reduces overall dimensions of the lower station. The structure of the driven pulley, which is made akin to a squirrel wheel, prevents the belt from damage when abrasive material falls between the internal surface and the pulley. Conic form of the drive pulley in combination with the rubber covering secures increased adherence and stability of the belt position at a motion rate of 1,4-2m/sec.
Depending on properties of the material conveyed in the elevators (light, heavy, abrasive, poorly loadable and poorly unloadable materials), different types of buckets are used:
- buckets of special form;
- abrasion-resistant and chemically resistant buckets;
- lightweight plastic buckets for conveying of water-absorbing materials, which are prone to adhering.
In order to increase operational life of the elevators different lining materials (HARDOX, CASTOLIN etc.) as well as a combination of different bucket types are used, for example, plastic and steel buckets are used in the same facility.
High security of the buckets fastening to the belt is achieved by means of special elements with increased breakaway and protection against the self-unfastening.
Elevator operation control is performed by means of the motion and belt misalignment sensors supplied as a set.
Apart from the hatches and detachable panels at the upper and lower stations an access to the working body from each side from any height of the elevator well is provided for repair and maintenance of the elevators. Increased structural stability of the well allows putting a platform for the drive service on it.
On the whole the elevators as well as the belt conveyors manufactured by “Stromizmeritel” Closed JSC are noted for quick assembly, reliable and dust-free operation and are of high quality and good design.