Bulk Bag Unloader with Screw Conveyor Feeder

Bulk Bag Unloader with Screw Conveyor Feeder for Efficient Powder Transfer

Key Features of the Bulk Bag Discharger + Screw Conveyor

Robust, Dust-Controlled Big Bag Emptying

• Enclosed docking station with clamp ring and negative-pressure dust capture to minimize airborne particles during FIBC discharge.
• Adjustable lifting frame and cross-beam suitable for 500–2000 kg bags, enabling quick changeovers and safe handling.
• Bag massagers and spout tensioner ensure steady flow from compacted or hygroscopic materials without manual intervention.

High-Efficiency Screw Conveyor Feeding

• Helical screw/auger feeder (single or twin) delivers consistent volumetric throughput for powders, flakes, and pellets.
• Variable frequency drive (VFD) provides stepless speed control for precise feed rate matching upstream and downstream processes.
• Optional shaftless or cut-flight screw designs to reduce bridging, improve handling of sticky, fibrous, or abrasive products.

Durable Materials and Clean Design

• Product-contact parts in SS304 or SS316L with bead-blast or mirror finish to reduce residue and facilitate rapid cleaning.
• Gasketed covers, quick-release clamps, and tool-free access for maintenance; food-grade seals and lubricants available.
• Wear-resistant hardfacing and replaceable liners extend service life when conveying silica, alumina, or mineral fillers.

Process Integration and Modular Options

• Inline rotary sieve or magnet trap to protect mixers, silos, or extruders from foreign matter.
• Flexible connections and expansion joints minimize vibration transmission and accommodate thermal expansion.
• Optional level probes, choke detection, and anti-overload protection for stable, unattended operation.

Intelligent Controls and Safety

• PLC/HMI with recipe presets, start/stop sequencing, and real-time trends for throughput and motor load.
• Interlocked access doors, emergency stops, and safety relays comply with CE standards; ATEX Zone 21/22 options on request.
• Remote diagnostics and data logging via Profinet/EtherNet/IP/Modbus TCP for plant-wide visibility.

Application Areas

Construction and Building Materials

• Cement additives, dry mortar, gypsum, calcium carbonate, silica sand, and tile adhesive premixes.
• Ensures steady feeding to paddle mixers and silo loading with reduced dust and improved formula consistency.

Furniture and Wood-Based Panels

• Melamine resin powders, urea resins, fillers, and flame-retardant additives for MDF/HDF production lines.
• Gentle, controlled transfer limits segregation and supports continuous press operations.

Automotive and Plastics Compounding

• PP/PE/PVC resins, glass bead fillers, carbon black, and masterbatch ingredients.
• Synchronized screw conveying improves extruder feeding stability and color uniformity.

Chemicals and Detergents

• Soda ash, zeolites, phosphates, and specialty granular chemicals.
• Corrosion-resistant build and sealed transfer reduce contamination and housekeeping.

Food, Feed, and Nutraceuticals

• Sugar, starches, milk powders, premixes, vitamins, and micro-ingredients (with food-grade configuration).
• Hygienic design supports HACCP/GMP and quick changeovers between recipes.

Technical Specifications

Performance and Capacity

• Bag size: 500–2000 kg FIBC; discharge rate dependent on material flowability.
• Conveying capacity: 1–20 t/h typical for powders/granules; higher on request with larger diameter screws.
• Conveying distance: up to 12 m horizontal or inclined (0–45°); custom layouts available.
• Accuracy: volumetric control via VFD; optional weigh-hopper or gravimetric check for enhanced dosing stability.

Equipment Configuration

• Unloader frame: heavy-duty carbon steel with powder coating or full stainless steel; forklift pockets and lifting hoist options.
• Docking system: clamp ring or inflatable seal with spout tensioner; integrated dust extraction nozzle.
• Flow aids: bag massagers, vibration pads, air pads, and agitation hopper for poor-flowing powders.
• Screw conveyor:
  • Diameters: 100–300 mm
  • Screw types: standard, cut-flight, ribbon, or shaftless
  • Quick-open inspection ports and split troughs for cleaning
• Protection: torque limiter, choke sensor, level sensors, overfill protection, and reverse-jog for clearing plugs.

Controls and Interfaces

• PLC/HMI 7–10″ touchscreen with recipe management, soft-start, and trend display for current, speed, and throughput.
• Communications: Profinet, EtherNet/IP, Modbus TCP; optional OPC UA/MQTT for IIoT connectivity.
• Compliance: CE, food-contact materials on request; ATEX categories for combustible dust handling.

Energy and Utilities

• Power supply: 3-phase 380–480 V, 50/60 Hz.
• Installed power: typically 1.5–11 kW based on screw diameter, length, and material characteristics.
• Dust control: connection for central dust collector or local cartridge filter; optional HEPA final stage.

Customer Case

Customer Recognition and Market Performance

Field-Proven Benefits

• Building materials producers report up to 25% reduction in dust emissions and faster batch turnaround after deployment.
• Plastics compounders note smoother extruder feeding and reduced color streaking due to stabilized screw throughput.
• Food processors highlight shorter sanitation windows thanks to quick-release covers and clean-in-place-ready design.

High Satisfaction, Faster Payback

• Maintenance teams value modular screws and split troughs that cut downtime during inspection and liner replacement.
• Operations benefit from predictable flow, fewer manual interventions, and improved workplace hygiene.
• Management cites lower total cost of ownership through energy-efficient drives and extended wear life on abrasive duties.

Why Choose Our Big Bag Discharger with Screw Conveyor?

Innovation, Reliability, and Flexibility

• A tightly integrated unloading and conveying solution delivering dependable capacity, clean operation, and easy maintenance.
• Configurable screws, materials, and controls adapt to diverse powders—from free-flowing granules to cohesive, abrasive blends.
• Competitive lifecycle costs with scalable options for future throughput and compliance needs.