Design and Operating Principle

The BSM operates on a continuous, multi-stage principle that automates the entire material handling cycle from in-feed to waste disposal.

Operating Sequence:

Step 1: Automated Bag Feeding
Bags are loaded onto an inclined belt conveyor that aligns and feeds them into the slitting chamber at a controlled, consistent rate.

• Capacity: Handles bag widths mm and heights between 80–140 mm.
• Engineering Benefit: Eliminates skewing and ensures ergonomic, low-height loading.

Step 2: High-Speed Rotary Cutting
Inside the chamber, the bag passes over heavy-duty rotary cutters driven by dual 1.5 HP motors.

• Mechanism: Surface speeds of ~18 m/s ensure clean, full slitting of multi-layer and woven bags.
• Stability: Designed for low vibration and extended cutter life.

Step 3: Trommel Separation
The cut bag falls into a rotating trommel screen operating at ~28 RPM.

• Action: The rotation tumbles the bag, allowing fine product to pass through perforations while retaining the empty bag.
• Durability: PU-coated drive and idler wheels provide long operational life.

Step 4: Empty Bag Compaction & Discharge
Empty bags are automatically ejected into a compactor driven by a 3 HP gear motor, reducing waste volume and simplifying disposal. Simultaneously, the recovered product is transferred via a sealed screw conveyor.

Major Components & Engineering Construction

Component	Engineering Description	Material Options	Design Advantage
Belt Conveyor	Inclined feed mechanism with height adjustability.	MS, SS	Vibration-free feeding; ensures consistent alignment.
Bag Slitting Unit	Dual-motor rotary cutters (300/400/500 mm).	MS, SS304, SS316	High-speed (~18 m/s) ensures clean cuts on multi-layer bags.
Rotary Trommel	Balanced cylindrical screen with PU-coated wheels.	MS, SS	Extended retention time for >99% emptying efficiency.
Vent Filter	Integrated 3 HP extraction fan with filtration.	MS, SS	Creates negative pressure for a zero-leakage, dust-proof zone.
Bag Compactor	Screw/hydraulic compression unit.	MS, SS	Jam-free compression; reduces waste volume significantly.
Control Panel	PLC-based automation with safety interlocks.	-	Full process sequencing, AZM150 door interlocks, and UV/OV protection.

Performance Features & Engineering Benefits

Engineering Constraint	BSM Feature	Resulting Technical Benefit
Prevention of Airborne Hazards	Integrated Vent Filter (3 HP) & Enclosed Housing	100% Dust-Proof Operation: Protects operators from respirable hazards and prevents cross-contamination.
Maximizing Material Recovery	Balanced Trommel with ~28 RPM Rotation	>99% Emptying Efficiency: Extended retention ensures valuable product is not discarded with waste bags.
Operational Continuity	Dual 1.5 HP Cutter Motors & PU Coated Wheels	High Reliability: Ensures uninterrupted cutting of tough bags and long-life operation of rotating parts.
Operator Safety	AZM150 Door Interlocks & Emergency Stops	Compliance: Prevents access to rotating parts during operation, meeting industrial safety norms.

Installation & Maintenance Summary

• Foundation: A level foundation is mandatory for vibration-free operation
• Clearance: Minimum 12” clearance required around the equipment for maintenance access
• Maintenance:
  • Daily: Visual inspection of structural components.
  • Weekly: Inspection of bearings and PU wheels.
  • Wear Parts: Cutter blades and PU wheels are identified as key wear parts requiring periodic monitoring.

Application Engineering

Food & Beverage

• Materials: Flour, sugar, starch, milk powder
• Pain Point: Hygiene risks and dust clouds from manual dumping
• Engineering Solution: SS316 contact parts, food-grade seals, and CIP ports to ensure sanitary compliance

Pharmaceuticals

• Materials: APIs, excipients, fine powders
• Pain Point: Exposure to potent powders and cross-contamination
• Engineering Solution: HEPA filtration integration and fully enclosed discharge for GMP compliance

Chemicals & Pigments

• Materials: TiO₂, carbon black, resins
• Pain Point: Highly dusting, abrasive materials and static buildup
• Engineering Solution: Anti-static linings and abrasion-resistant materials to handle tough operating conditions

Plastics & Polymers

• Materials: PVC resin, polymer granules
• Pain Point: Granule breakage and inconsistent flow
• Engineering Solution: Gentle handling via trommel separation and level sensors for flow control