I. Principle

The colloid mill utilizes the high-speed relative motion (speeds reaching thousands to tens of thousands of revolutions per minute) between the stator and rotor to generate intense shearing, impact, and grinding forces, breaking down, emulsifying, and homogenizing material particles to ultimately form a colloid or ultrafine suspension, similar to a "high-speed rotating fine grinding shear."

II. Structural Components (4 parts)

Working Components: Stator (fixed annular toothed disc) and rotor (rotating toothed disc); the tooth profile design determines the grinding precision.

Transmission System: Motor + coupling/belt, providing high-speed power to the rotor.

Feed/Discharge Devices: Feed inlet (usually from top to bottom), discharge outlet; some models include a pressure regulating valve.

Sealing and Cooling System: Mechanical seal to prevent leakage; cooling jacket to prevent material deterioration at high temperatures.

III. Main Application Areas

Food Industry: Jams, dairy products, soy products (e.g., homogenization of tofu pudding), condiments (refining sesame paste, chili sauce).

Pharmaceuticals and Chemicals: Ointments, gels, nanomaterial dispersion, pesticide emulsification.

Daily Chemical Industry: Emulsification and homogenization of shampoos, face creams, laundry detergents, etc., to improve texture fineness.

Bio-Environmental Protection: Refining of traditional Chinese medicine extracts, wastewater and sludge treatment (cell wall breaking and degradation).

IV.Key Points for Selecting a Colloid Mill for the Food Industry

1. Matching Grinding Precision: Select tooth shape according to the final state of the material—for jams/chili sauces, choose a combination of "coarse teeth + medium teeth" (20-100μm); for dairy products/beverages, choose "fine teeth + ultra-fine teeth" (5-20μm) to avoid over-grinding and material stratification.

2. Material Safety First: Parts in contact with food must be made of 304/316L stainless steel; seals should be made of food-grade silicone rubber, complying with GB 4806 food safety standards.

3. Capacity Matching Scenarios: Small processing plants (daily output < 5 tons) should select laboratory/small colloid mills (power 1.5-5.5kW); large production lines (daily output > 20 tons) should select continuous colloid mills (power 11-45kW) supporting continuous feeding and discharging. 4. Special Needs Adaptation: For fibrous materials (such as fruit and vegetable sauces), choose the "wide-groove" design to prevent clogging; for heat-sensitive materials (such as yogurt and enzyme preparations), choose the model with a cooling jacket to control the grinding temperature <40℃.

5. Convenient Cleaning and Maintenance: Prioritize detachable and washable structures; the grinding disc and seals are easy to disassemble, reducing residual bacteria growth and complying with food hygiene standards.