COFCO Engineering Equipment (Zhangjiakou) Co., Ltd. is one of the most reliable manufacturers and suppliers of wheat bran brush machine in China. With abundant experience, we warmly welcome you to buy durable wheat bran brush machine in stock here from our factory. We also accept customized orders.
High-speed milling separation equipment engineered to reclaim residual endosperm particles adhering to wheat bran flakes, maximizing flour extraction efficiency without elevating finished product ash content.
Technical Data Sheet
|
Parameter |
Specification |
|
Capacity |
3.5 t/h to 8.0 t/h |
|
Spindle Speed |
750 RPM to 950 RPM |
|
Motor Power |
11 kW to 22 kW (380V/460V, 50/60Hz) |
|
Cylinder Dimensions |
Diameter 600×1200 mm to 800×1600 mm |
|
Screen Aperture |
0.63 mm to 1.00 mm stainless steel |
|
Rotor Tip Speed |
24 m/s to 30 m/s |
|
Wetted Materials |
Food-grade 304 stainless steel |
Engineering Advantages
Controlled Impact Dynamics: Angled steel beaters deliver a calibrated centrifugal sweeping force that strips clinging starch cells while maintaining bran flake structural integrity.
Precision Rotor Balance: Assembly dynamically balanced to ISO 1940 Grade G2.5, keeping running vibration below 2.0 mm/s during continuous heavy-duty cycles.
Rapid Maintenance Access: Segmented barrel screens feature a slide-out rail mounting mechanism, reducing screen element replacement duration to under 30 minutes.
Contamination-Free Bearings: Oversized self-aligning spherical roller bearings housed in cast-iron pedestals utilize labyrinth grease seals to isolate processing chambers.
Uniform Feed Distribution: Integrated variable-speed paddle feeder meters incoming bran evenly across the entire axial length of the cylindrical screen.
Industrial Applications
Commercial Flour Mills: Positioned downstream of final reduction sifting to strip remaining flour from coarse and fine bran fractions.
Semolina Processing Lines: Applied in purification circuits to recover starch-rich particles from semolina-bran mixtures.
Specialty Grain Plants: Integrated into rye and spelt milling systems for endosperm recovery from fibrous outer seed coats.
Operating Mechanics
Infeed Stage:
Bran enters through an inlet hopper via a controlled feeding auger, dropping directly into the internal screening chamber.
Centrifugal Stripping:
The high-speed rotor accelerates material outward against the stationary cylindrical wire mesh screen.
Particle Separation:
Impact force and aerodynamic turbulence detach adhered flour particles, forcing them through screen perforations into the collection hopper.
Terminal Discharge:
De-floured bran is conveyed axially along the cylinder and expelled through a counter-weighted discharge valve.
Milling Performance
Ash Regulation: Preserves finished flour ash parameters within 0.02% of target limits by eliminating excessive shearing of the fibrous outer coat.
Sanitary Interior: Smooth internal welds and dead-zone-free transition angles prevent material accumulation and biological growth risks.
Pneumatic Balancing: Optimized internal pressure differentials prevent powdery residue buildup along the lower screen casing.
Customization Options
Interchangeable beaters available with hardened alloy steel or tungsten-carbide-coated edges for abrasive durum processing.
Custom plate thicknesses from 0.8 mm to 1.5 mm with hexagonal or round hole patterns.
Direct-coupled motor setups or belt-driven configurations tailored to specific mill floor headroom limitations.
Optional internal food-grade epoxy coatings or mirror-polished contact surfaces for sticky, high-moisture feedstocks.
Packaging & Transport
Protective Crate Construction: Fumigated plywood crates lined with moisture-barrier polyethylene sheeting and desiccant packs for maritime transit.
Corrosion Prevention: Machined shafts coated with anti-rust protectants and critical sensors sealed in anti-static shielding bags.
Handling Provisions: Integrated base frames equipped with forklift channels and crane lifting lugs for safe rigging and container loading.
Documentation Dispatch: Shipped alongside complete English technical manuals, electrical schematics, bill of materials, and mill test certificates.
Frequently Asked Questions
Q: How does rotor speed adjustment affect extraction rates?
A: Operating within 750 RPM to 950 RPM balances endosperm recovery against bran pulverization. Higher speeds increase recovery but raise ash content, requiring tuning based on local wheat hardness.
Q: What is the typical service life of the internal screen?
A: Stainless steel screens process between 15,000 and 25,000 tonnes of material before replacement, depending on raw wheat cleaning efficiency and stone content.
Q: How is bearing contamination prevented in dusty mill environments?
A: Housing units employ multi-stage labyrinth seals packed with high-temperature lithium-complex grease, combined with external air-purge ports to maintain positive pressure.
Q: Is foundation reinforcement required for installation?
A: Factory dynamic balancing ensures smooth operation on standard reinforced concrete flour mill mezzanines, requiring only standard anchor bolt fastening.
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