Bucket elevators with centrifugal-gravity unloading are designed for vertical grain transportation at the grain elevators, flour mills and other grain processing enterprises. Bucket elevators are designed for operation in the technological process with continuous operation regime, both indoors and outdoors. Climatic version “U”, environmental class 3 in accordance with National State Standard GOST 15150.
Specifications
|
Parameters |
Н-5 |
Н-5х2 |
Н-10 |
Н-10х2 |
Н-20 |
Н-50 |
Н-100 |
|
Capacity for grain, t/h* |
5 |
10 |
10 |
20 |
20 |
50 |
100 |
|
Belt speed, m/sec. |
1,4 |
1,4 |
1,6 |
1,6 |
1,6 |
2.2 |
2,2 |
|
Belt width, mm |
125 |
125 |
150 |
150 |
175 |
200 |
300 |
|
Step for buckets of different types: metal without bottom
plastic
|
210 57 130
|
210 - -
|
260 81 150
|
260 - -
|
260 81 -
|
160 - - |
170 - - |
|
Quantity of belt shims, pcs. |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
|
Outer cross-sectional dimension of pipes, mm |
160х160 |
160х317 |
200х200 |
200х200 |
236х236 |
280х280 |
260х376
|
|
Diameter of head and boot pulley, mm |
215 |
215 |
400 |
400 |
500 |
630 |
750 |
|
Pulley length, mm |
135 |
135 |
170 |
170 |
200 |
220 |
320 |
|
Rated power for elevator height: - up to 30 meters, kW
- over 30 meters, kW
- up to 45 meters, kW |
1,1 1,5 - |
1,5 2,2 - |
1,5 2,2 - |
3,0 4,0 - |
3,0 4,0 - |
5,5 7,5 11 |
11 15 18,5 |
|
Overall dimensions of elevator head with drive, mm length width height |
1008 400 2178 |
1008 520 2178 |
1117 450 2458 |
1117 865 2458 |
1304 546 2570 |
1736 1503 1338 |
2150 1250-1400 1663 |
|
Air consumption for aspiration, m3/h |
350 |
700 |
400 |
800 |
400 |
500 |
700 |
|
Service life, years |
8 |
8 |
8 |
8 |
8 |
8 |
8 |
* Capacity of bucket elevators is specified for wheat with volume weight 0,8 t/m3 and moisture 15%. To determine bucket elevator capacity for transportation of grain processing products, capacity values specified in the table should be multiplied by a factor 0,7 for flour and 0,5 for animal feed.
Structure and Functioning
Bucket elevator consists of the following parts for marks Н-5 (fig.1), Н-10 (fig.2), Н-20 (fig.3): boot 1, head 2, straight elevator pipes 3 and 4, tension pipe with inspection hatch 6, pipes for installation of overload sensor and belt running-off sensors 7, pipes with aspiration nozzle 8, two pipes for installation of explosion vent 9 (on customer order), pipes for belt running-off sensors 11. Belt with operating element – buckets 5 – is applied as pulling unit.
Bucket elevator Н-10х2 consists of the following parts (fig.4): two boots with symmetrical construction 1, head 2, straight elevator pipes 3 and 4, two tension pipes with inspection hatch 6, two pipes for installation of overload sensor and belt running-off sensors 7, two pipes with aspiration nozzle 8, four pipes for installation of explosion vents 9 (on customer order), two pipes for belt running-off sensors 11 and two belts with buckets 5.
Bucket elevator Н-5х2 consists of the following parts (fig.5): boot 1, head 2, straight elevator pipes 3 and 4, tension pipe with inspection hatch 6, pipes for installation of overload sensor 7, pipes with aspiration nozzles 8, two pipes for installation of explosion vents 9 (on customer order). Two belts with operating element – buckets 5 – are applied as pulling unit.
Bucket elevator boot consists of welded cover and pulley. Shaft with pulley is installed in bearings housings made as movable brackets of screw tension device. Bucket elevators are equipped with sensor installed on the boot shaft to control speed, slippage and belt transverse tearing off.
Bucket elevator head consists of casing (upper and lower parts), elevator pipes, pulley, intermediate structure, drive, unloading nozzle, protection constructions. Two belt transmissions (from drive to intermediate structure and from intermediate structure to pulley) serve as pulley drive for bucket elevators Н-5, Н-10, Н-5х2. Belt transmission (from drive to intermediate structure) and chain transmission (from intermediate structure to pulley) serve as drive for bucket elevators Н-20 and Н-10х2. Inspection hatches are placed in the casing lower part.
Nozzles for explosion vent installation are mounted on elevator head.
Regulating hood is installed in the head lower part to eliminate material backlagging.
Clearance between head casing and bearings housings is securely sealed.
The main pulling and operating element of the bucket elevator is elevator belt with fixed buckets. Belt passes in elevator pipes, passes around drive and tension pulleys of head and boot. Belt ends should be connected by angle elements pos.10 or with overlap by one buckets step.
Elevator pipes serve as casing for belt and made in the form of square pipes with flanges for fastening with each other (rectangular pipes with baffle for bucket elevator Н-5х2). Pipes with overload sensor are installed over the boots to avoid blockage by the transported product. Pipes with aspiration nozzle are installed for bucket elevator aspiration. Bucket elevators are also equipped with pipes for explosion vents installation (on customer order). Special inspection pipe is installed for periodic inspection of buckets and belt, and for belt threading and tightening.
Grain is supplied to the elevator boot inlet nozzle by gravity flow pipes. Then grain is picked up by buckets and supplied to the specified height to bucket elevator head, where under the influence of centrifugal acceleration buckets are unloaded and grain by gravity flows in accordance with technological scheme.
