Pneumatic conveying of small legumes and grains from big bags to a multi-head packaging line

Food integrity and safety

For the new production line, the customer needed to address several technical challenges:

• Gentle transfer: the need to transport chickpeas, pearl barley, and quinoa while preventing mechanical damage to the grains.
• Contamination risk: quick changeover between standard products and gluten-free items without any risk of cross-contamination.
• Operational continuity: continuously supply the multi-head weigher to maintain the packaging machine’s full production capacity.
• Compact layout: Integrate the system into an existing big-bag unloading station with minimal footprint.

Customized TECH.420E pneumatic conveyor

Delfin provided a custom pneumatic conveying system entirely made of stainless steel:

• TECH.420E Conveyor: central unit designed for handling fragile food products.
• Dedicated piping: installation of two separate piping systems, one for standard products and one exclusively for gluten-free products, to eliminate any possibility of contact between product lines.
• Advanced filtration: central vacuum system equipped with a high-efficiency filter cartridge for total control of airborne dust.

This solution has enabled the automation of the multihead weigher loading process while maintaining the highest quality standards.

Flexibility and product protection

• Preserved quality: gentle transfer with absolutely no mechanical breakage or product damage.
• Certified safety: the dual-piping system ensures the absence of contamination, which is essential for gluten-free lines.
• Constant productivity: stable and continuous feeding of the packaging line without machine downtime.
• Production flexibility: quick changeover between different types of legumes and grains thanks to the system’s ease of management.
• Seamless integration: the compact design allowed for quick installation without disrupting the existing layout.