What is a clod crusher in pneumatic conveying systems? A clod crusher is a mechanical device installed in pneumatic conveying circuits to disintegrate clumps or lumps of bulk solid material. It restores free-flowing particle size to prevent blockages, ensure continuous transport and protect downstream equipment while preserving the material’s quality.
Key features - Construction in stainless steel or carbon steel.
- Optional control from the central control panel.
- Design throughput from 1 to 20 t/h (customizable).
- Includes gearmotor (220–440 VAC, 3Ph, 50–60 Hz) with IP54 protection.
- Gearmotor directly coupled to the crusher shaft.
- Single or multiple breaking-blade shafts with inter-shaft power transmission.
- Blade tip speed approximately 1 m/s.
- Inlet and outlet via flanges with diameters from 300 to 500 mm.
- Overall crusher height around 350 mm.
- Admission of clods up to 200 mm maximum.
- Output particle size after breaking from approximately 10 mm (smaller particles pass through unchanged).
Types of clod crushers - Roller clod crushers: rotating rollers compress and fracture hard, compact clumps.
- Hammer clod crushers: rotating hammers apply impact forces for cohesive materials.
- Blade clod crushers: cutters or blades shear softer or less compact agglomerates.
- Vibration clod crushers: vibration-assisted systems that dislodge clumps without degrading fragile materials.
- Impact clod crushers: high-impact devices for very dense or hard agglomerates.
Industries using clod crushers - Food industry: sugars, flours and powdered ingredients prone to caking.
- Chemical industry: powders that agglomerate during processing.
- Pharmaceutical industry: active ingredients and excipients in powder form requiring consistent particle size.
- Plastics industry: resins and plastic powders subject to lumping.
- Construction industry: cement, sand and mineral blends forming clumps in storage or handling.
- Mining industry: powdered minerals that compact into lumps.
- Recycling industry: agglomerated recyclables that need size reduction before processing.
Technical specifications - Materials: stainless steel or carbon steel construction.
- Throughput: 1–20 t/h (customizable).
- Gearmotor: 220–440 VAC, 3Ph, 50–60 Hz, IP54; direct coupling to shaft.
- Shafts: single or multiple breaking-blade shafts with inter-shaft transmission.
- Blade tip speed: approx. 1 m/s.
- Flanges (inlet/outlet): Ø 300–500 mm.
- Typical height: ~350 mm.
- Maximum admitted clod size: up to 200 mm.
- Broken particle size: from ~10 mm (smaller particles pass unchanged).