XUANYU Stainless Grinder is a hygienic, high-precision fine grinding equipment engineered for food and grain processing, specially designed for ultra-fine milling of wheat, corn, rice and other grains into flour with adjustable fineness. Crafted with full food-grade stainless steel and an optimized low-temperature grinding structure, it ensures uniform particle size, no gluten damage and dust-free operation, perfectly matching XUANYU Flour Sieving Solution and complying with FDA/3-A/BISSC standards—ideal for all-scale flour processing lines to produce high-quality fine flour.

Core Advantages

1. Flour-Specific Low-Temperature Fine GrindingOptimized grinding rotor and liner design with low-speed operation avoids flour overheating, gluten denaturation and nutrient loss; adjustable grinding fineness (60–500 mesh) matches the screening accuracy of XUANYU Flour Sieving Solution, ensuring uniform particle size of finished flour and consistent baking performance.
2. Food-Grade Hygienic Stainless Steel ConstructionAll material contact parts (grinding chamber, rotor, feed/discharge hopper) are AISI 304/316L stainless steel with mirror-polished, crevice-free and dead-corner-free surfaces. CIP/SIP compatible for automatic cleaning and sterilization, eliminating cross-contamination risks and meeting the strictest food safety requirements for flour production.
3. Dust-Free Sealed Operation & Low LossFully enclosed grinding chamber with high-quality food-grade sealing rings prevents flour dust leakage, moisture absorption and secondary pollution; anti-stick coating on inner surfaces minimizes flour adhesion, ensuring complete material discharge with no residue and reducing raw material loss to ≤0.3%.
4. High Grinding Efficiency & Stable PerformancePrecision-machined grinding components with optimized material flow channel design ensure high grinding efficiency and uniform particle size distribution; heavy-duty stainless steel structure with shock absorption base enables 24/7 continuous stable operation with low failure rate and low noise (≤70dB).
5. Intelligent Control & Easy OperationIntegrated with PLC/HMI touchscreen control, realizing one-key start-stop, stepless adjustment of grinding speed and fineness, real-time monitoring of equipment operation status and grinding fineness. No professional operation required, reducing labor intensity and operational errors.
6. Seamless Integration & Flexible CustomizationCompact structure with small floor space, customizable feed/discharge size and grinding capacity, perfectly matching XUANYU Flour Sieving Solution, stainless steel conveyors and other flour processing equipment. Horizontal/vertical installation optional to adapt to on-site workshop layout and process requirements.
7. Safe & Reliable DesignEquipped with overload protection, material blockage alarm and emergency stop button; all electrical components meet IP65 protection grade, water and dust resistant; food-grade lubricants are used for all moving parts, fully complying with food processing hygiene standards.
8. Energy-Efficient & Environmental ProtectionHigh-efficiency energy-saving motor with frequency conversion speed regulation technology reduces energy consumption by 20% compared with traditional grinding machines; integrated dust collection system (optional) further reduces dust emission, complying with industrial environmental protection standards.

Technical Specifications

表格

Parameter	Value/Range
Material Contact Parts	AISI 304 stainless steel (standard); 316L (customizable)
Grinding Chamber/Frame Material	AISI 304 stainless steel
Grinding Fineness	60–500 mesh (stepless adjustable)
Processing Capacity	50kg/h–30t/h (for wheat flour, model-dependent)
Rotor Speed	200–1200r/min (adjustable)
Motor Power	3kW–75kW (food-grade energy-saving motor)
Noise Level	≤70dB
Sealing Grade	IP65 (dust-proof/water-proof)
Protection Grade	IP65 (electrical components)
Hygiene Standard	FDA, 3-A, BISSC compliant
Installation Mode	Horizontal/Vertical (optional)

Key Applications

• Flour Processing: Ultra-fine grinding of wheat, high-gluten/low-gluten wheat, corn, rice, oats into fine flour, perfectly matching XUANYU Flour Sieving Solution for subsequent screening and purification, producing high-quality finished flour.
• Grain Processing: Fine milling of various grain kernels into grain powder for food production, such as corn flour, rice flour, soybean flour.
• Food & Beverage: Grinding of food raw materials with high hygiene requirements, such as starch, cereal powder, vegetable powder.
• Baking & Confectionery: Production of ultra-fine flour for high-end baking and candy products, ensuring delicate taste and excellent processing performance.

Working Principle

1. Hygienic FeedingClean grain kernels are evenly fed into the sealed grinding chamber via a food-grade vibrating feeder or screw conveyor, with the material level sensor controlling the feeding amount to avoid overload and blockage, ensuring stable grinding process.
2. Low-Temperature Precision GrindingThe motor drives the stainless steel grinding rotor to rotate at a set speed; the grain kernels are crushed, ground and refined by the combined action of extrusion, shearing and friction between the rotor and liner, with the grinding fineness controlled by adjusting the gap between the rotor and liner.
3. Dust-Free DischargingThe ground flour with uniform particle size is smoothly discharged from the sealed discharge port under the action of gravity and negative pressure, and directly conveyed to XUANYU Flour Sieving Solution for subsequent screening and purification, realizing seamless connection of grinding and screening processes.
4. Safety & Stable RegulationThe overload protection system immediately cuts off power in case of material blockage or abnormal operation to prevent motor damage; the low-speed operation design avoids flour overheating, and the shock absorption base reduces vibration transmission to the foundation, ensuring stable and safe operation of the equipment.

Customization Options

• Hygiene Upgrades: Full AISI 316L stainless steel construction for corrosive food materials; CIP/SIP full-machine automatic cleaning system; food-grade anti-static coating for inner surfaces of the grinding chamber.
• Structural Customization: Explosion-proof design for dust explosion-proof areas; heated grinding chamber to prevent material moisture absorption and agglomeration; mobile base with food-grade casters for flexible on-site use.
• Functional Add-Ons: Integrated dust collection system; online particle size detection device; automatic temperature control system; frequency conversion speed regulation for stepless adjustment of grinding capacity.
• Automation Integration: Remote monitoring and fault alarm system; seamless connection with XUANYU flour processing line central control system; data logging for grinding efficiency, fineness and energy consumption analysis.

Why Choose XUANYU Stainless Grinding Machine?

XUANYU Stainless Grinding Machine is a flour processing-specific fine grinding solution specially designed for XUANYU Flour Sieving Solution, with the core design of low-temperature grinding, hygienic sealing and seamless integration. It perfectly matches all XUANYU flour processing equipment to form a fully closed, integrated and high-efficiency production line, realizing dust-free, low-loss and high-precision grinding of grains, producing high-quality fine flour with uniform particle size and excellent processing performance. All equipment is customized according to your production scale, workshop layout and product requirements, with one-stop after-sales service including on-site installation, commissioning, CIP validation, operator training and long-term spare parts supply, helping you optimize the flour production process and improve product quality and market competitiveness.

XUANYU Sieving Solution for Flour

Core Advantages

Flour-Specific Precision Sieving: Tailored exclusively for wheat flour, high-gluten flour, low-gluten flour, and whole-wheat flour sieving, integrating ultrasonic vibrating sieves and rotary vibration sieves. The optimized sieve structure and gentle vibration mode avoid flour agglomeration and overheating, with sieving accuracy ranging from 40μm to 500μm (40–325 mesh), ensuring uniform particle size distribution, pure flour quality, and consistent baking performance.

Food-Grade Hygiene & Safety: All contact parts (sieve mesh, sieve chamber, feeding hopper, discharging port) are made of AISI 304/316L stainless steel with polished, crevice-free surfaces, complying with FDA, 3-A, and BISSC food safety standards. The fully enclosed design prevents dust leakage, cross-contamination, and moisture absorption, ensuring the flour remains clean and meets food processing hygiene requirements.

Anti-Blocking & Anti-Agglomeration: Adopting ultrasonic anti-blocking technology and food-grade anti-stick coatings, it effectively solves the problem of fine flour particles blocking sieve meshes and agglomerating due to static electricity or moisture. The continuous online cleaning function ensures uninterrupted production, reducing the need for frequent manual cleaning and improving work efficiency.

Low Flour Loss & High Yield: Optimized internal flow channels and anti-residue design minimize flour adhesion on equipment surfaces, reducing raw material loss to ≤0.3%. The integrated sieving process avoids intermediate material transfer loss, and the sieve residue recovery system can reprocess coarse particles (such as bran) to further improve flour yield and reduce production costs.

Easy Operation & Low Maintenance: PLC+HMI touchscreen control enables one-key start-stop, adjustable vibration frequency and amplitude, and real-time monitoring of sieving status. Tool-free sieve mesh replacement (completed in 30 seconds) and detachable components facilitate quick cleaning and maintenance, reducing downtime and labor intensity.

Flexible Customization & System Integration: Modular design supports flexible combination of single-machine or multi-stage sieving equipment according to flour production scale (small workshops to large flour mills) and process requirements. Customizable sieve mesh specifications, flow rate (500 kg/h–20 t/h), and equipment size, perfectly matching flour milling, mixing, and packaging systems, adapting to different types of flour processing needs.

Working Principle

Flour Feeding: After milling, the crude flour is evenly fed into the vibrating sieve via a screw feeder or hopper, ensuring stable and uniform feeding without causing sieve mesh overload.

Precision Sieving: Driven by a high-frequency vibration exciter, the sieve body generates gentle linear or elliptical vibration. Under the combined action of vibration force and gravity, flour particles move forward and jump on the sieve surface; qualified fine flour particles pass through the sieve mesh, while coarse impurities (such as bran, broken wheat grains) and agglomerates are discharged separately.

Anti-Blocking & Cleaning: During the sieving process, the ultrasonic anti-blocking system works synchronously to break up agglomerated flour and clear blocked sieve meshes. The food-grade anti-stick coating prevents flour from adhering to the sieve chamber, ensuring smooth sieving and reducing residue.

Finished Product Collection: The sieved fine flour is collected through the lower discharge port and conveyed to the next process (mixing, packaging, or storage) via a conveyor. Coarse residues are discharged through the slag discharge port for reprocessing or other uses, completing the entire flour sieving process.