Industry leaders

since 2000

ISO 9001:2015
ISO 14001:2015
ISO 45001:2018

Experienced

engineers

ALWO Storage Bunkers with Hydraulic Scraper Reclaim

Bulk-Material Storage Bunkers with Hydraulic Reclaim

ALWO storage bunkers with hydraulic scraper reclaim are rectangular storage chambers built on a steel structure or incorporated into a masonry construction. The floor-mounted reclaim system discharges material at a controlled rate to a boiler plant or another downstream process unit.

The hydraulic extractor is intended for dense, difficult-flowing materials, including wet heterogeneous biomass, lumps up to 80 × 80 × 80 mm and occasional stones, within the limits defined for the project.

Operating principle

  • scraper bars run on guide rails fitted with wear-resistant sliding pads;
  • hydraulic cylinders drive the scraper bars, with the number of cylinders depending on the configuration;
  • the material is pushed into a collecting screw and discharged at one end of the bunker;
  • a PLC control panel coordinates the reclaim cycles;
  • scraper speed is adjusted hydraulically, while screw speed is controlled by a variable-frequency drive.

A screening system can be integrated at the outlet where required by the material. Downstream conveying can be mechanical, using a screw or Redler-type drag-chain conveyor, or pneumatic.

Safety: bunker geometry, bridging tendency, overload, maintenance access, guarding, emergency stops and fire or explosion risks must be assessed for the actual material and installation.

ALWO bulk-material storage bunker with hydraulic scraper reclaim system
Characteristic Configuration 1 Configuration 2 Configuration 3 Configuration 4
Bunker length, mm 6,000 6,000 8,000 10,000
Bunker width, mm 4,000 6,000 6,000 6,000
Bunker height, mm 4,000 4,000 4,000 4,000
Gross capacity, m³ 96 144 192 240
Hydraulic power-unit rating, kW 5.5 7.5 11 15
Number of hydraulic cylinders 4 6 6 6
Extractor scraper length 4,000 4,000 6,000 8,000
Oil-tank capacity, L 120 160 160 160
Screw diameter, mm 280 280 280 280
Screw gearmotor power, kW 3 4 4 4
Screw speed, rpm 10–30 10–30 10–30 10–30
Reclaim capacity, m³/h 8–20 8–20 8–20 8–20
ALWO storage bunker with hydraulic scraper reclaim – view 1
ALWO hydraulic scraper reclaim bunker – view 1
ALWO storage bunker with hydraulic scraper reclaim – view 2
ALWO hydraulic scraper reclaim bunker – view 2
ALWO storage bunker with hydraulic scraper reclaim – view 3
ALWO hydraulic scraper reclaim bunker – view 3
Call Now Button