Frequently Asked Questions

• Can your vacuum conveying system handle fragile food products like breakfast cereal flakes without breaking them?

  For fragile products, we adjust the conveying parameters: (1) Low conveying velocity (typically 10-15 m/s vs. 25-30 m/s standard) to minimize particle impact; (2) Dense-phase conveying mode where material moves as plugs rather than in suspension, reducing particle-to-particle and particle-to-wall collisions; (3) Gentle-receiving hoppers with product-cushioning designs; (4) Step conveyors with intermediate discharge points that reduce drop heights. We recommend running a material test in our lab with your actual product to determine acceptable breakage levels at different conveying parameters before finalizing the system design.

• What materials are used for product-contact parts? Are the units easy to clean and switch between products?

  All product-contact components on our food and pharmaceutical feeding and conveying systems are manufactured from SUS 316L stainless steel with electropolished surface finishes, providing smooth, crevice-free surfaces that resist powder buildup and can be cleaned with routine wiping or water washing. For production lines requiring frequent product changeovers, the equipment is designed for tool-free or minimal-tool disassembly: the hopper, metering screw, and discharge piping can typically be dismantled, cleaned, and reassembled within 10 minutes, minimizing downtime between batches. Inlet and outlet connections use sanitary tri-clamp fittings that are directly compatible with industry-standard piping without the need for special modifications. If your facility requires specific material documentation — such as SGS test reports or raw material mill certificates — we can supply these on request to support your internal audits or customer factory inspections.

• When handling hygroscopic powders (such as whey powder, yeast powder, or active pharmaceutical ingredients/APIs), how does your equipment prevent caking and flow blockages?

  Hygroscopic powders are one of the most common challenges in food and pharmaceutical ingredient handling. We address this through a combination of the following configurations: (1) Nitrogen purging of the hopper — a continuous flow of dry nitrogen is introduced into the hopper to displace ambient moisture and prevent the material from absorbing humidity and clumping; (2) Vibration-assisted flow system — an adjustable-frequency vibrator is integrated at the hopper base to gently break up powder bridging without damaging the material's crystal structure or active components; (3) Agitator + low-speed screw combination — the agitator keeps the bulk material loose and flowing inside the hopper, while the low-speed, high-torque metering screw ensures continuous and stable dosing without generating excessive friction heat; (4) Fully sealed, moisture-resistant conveying lines — all inlet and outlet pipelines are fully sealed, and when paired with our vacuum conveying system, the entire material transfer process is dust-free and moisture-protected; (5) Real-time gravimetric feedback control — the loss-in-weight system samples weight data at up to 20ms intervals, automatically compensating for dosing deviations caused by fluctuations in material flowability, maintaining a dosing accuracy of ±0.5% or better. These solutions have been successfully deployed across dairy nutrition powder, pharmaceutical API raw material, and baking pre-mix applications. We are happy to advise on a tailored configuration based on your specific material properties.