Three-Stage Rotary Valve Plunger Pump

Core Structure & Working Principle

Three-Stage Rotary Valve (Core Control Unit)

Matériel: Zircone / SiC ceramic, hardness ≥1500 HV, resistant to pH 0–14 & organic solvents.

Three independent flow channels: Synchronous suction + discharge + cleaning (3-station seamless switching).

Zero cross-contamination: Channel spacing ≥2 mm, suitable for toxic / high-activity media.

Drive: Stepper / servo motor, angle positioning ≤0.1°, switching time ≤50 ms (up to 300 cycles/min).

Ceramic Plunger Unit (Precision Metering Module)

Matériel: Si₃N₄ / Al₂O₃ with DLC coating, friction coefficient ≤0.07.

Metering accuracy: ±0.2% CV, repeat positioning accuracy ±1 μm.

Typical Applications

1. Biopharmaceutical & CGT (Cell & Gene Therapy)

Viral vector & medium processing: Independent channels avoid inactivation.

CIP/SIP capable: 135°C steam, 0.1 MPa.

ADC production: Toxic payload & buffer switching, leakage ≤1×10⁻⁶ mL/min.

2. Semiconductor Manufacturing

Photoresist & developer supply: Resists acetone, PGMEA.

Flow fluctuation ≤0.3% for nano-coating.

Multi-component electroplating dosing: Ratio error ≤0.5%.

3. Food & Cosmetics

Multi-flavor beverage filling: 3 formulas seamless switching, residue ≤0.01 mL.

Microcapsule packaging: Core /wall/cross-linking agent synchronous pumping.