Belt bucket elevators

Charakteristics and application : 

Bucket elevator is intended for vertical transport of loose powdered and granular materials with grain size range 0 - 60 mm.The moisture of powdered materials must not exceed 1% H2O. According to generally valid condition at the materials with higher water content, the suitability of bucket elevator for the transport of such material is its adhesiveness or inclination for sticking in the bucket.
The transport of sorted materials with minimum grain size 25 mm is not admissible. The granulometric range of transported material has to comply with usual granulometric structure of grinding or crushing equipments. The sporadic occurence of grain size up to 80 mm is ad-missible. The admissible temperature of transported material depends on the used transport belt. At the standard type, the temperature range is from -10 ° Celsia up to +70 ° Celsia. By using of a special belt it is possible to transport warm materials up to 150°C. The correct operation of bucket elevator is conditioned by the continuous feeding of transpor-ted material. The material must not be fed under the pressure..

Dimensions and parameters : 

Type range of bucket elevators contains 8 basic sizes - single and double shaft - derived from bucket width < 220 up to 900 mm >, in the whole range of bucket shapes, driving drum rotation speed and corresponding capacity. Transport height can be chosen between 5 – 50 m.
The elevators are delivered completely equiped, with drive, rotation indicator holder and incl. connecting material. After technical – commercial consulting it is possible to order some modifications or a special type of construction.

Description of construction : 

The belt-type bucket elevator pertains to the series of so called high-speed bucket elevators, where the material is poured out over the outside bucket edge.The whole bucket elevator is designed as unit-built machine. This system enables to ensure the arbitrary transport height in the range from 5 up to 50 m.
The self-supporting shaft is composed of partial shaft casings. Further component of shaft is presented by the shaft part with assembly openings serving for assembly of transport belt (for its joint) and for the mounting of buckets. The lower shaft part is presented by the tensioning station. In this station there is installed the tensioning return drum seated in the antifriction bearings; these bearings are mounted in the special guide ensuring the vertical move of tensioning drum about 300 – 400 mm and ensures sealing of the station. The tensioning is ensured by means of rods and springs.
The upper shaft part is presen-ted by the driving station composed of driving drum with bearings and of drive. The drive of elevator consists of slip-on gear box, motor and brake serving for prevention from the return move of belt with buckets at the stopping of elevator. The drives with input over 22 kW are equipped with a booster drive, too.