High Viscosity Material Transfer Gear Metering Pump
The high-viscosity material transfer gear pump is a positive displacement pump specifically designed for viscous, sedimentation-prone media containing small amounts of particulate matter. Its key advantages include low rotational speed, high torque, low shear, and high volumetric efficiency; it is capable of stably conveying media with viscosities ranging from 1,000 to 1,000,000 cP and is widely utilized in fields such as chemicals, asphalt, resins, food processing, and pharmaceuticals.
Viscosity:Up to 1000000Cps.
Pressure:1-100bar(depending upon viscosity).
Temperature: -18℃-200℃(Explain it before selection if the temperature is over 90℃).
Typical application
Adhesive industry: Silicone sealant epoxy resin, hot melt adhesive.
Fiber industry: polymer,pigment,resin.
Film industry: cast hollow fiber membrance liquid,hollow water.
Performance Parameter Table
| Type | Single revolution displacement(cc/rec) | Rated flow at maximum speed (L/min) | Maximun speed(rpm) | Inlet/outlet dimensions |
| DM600 | 60.0 | 33.0 | 550 | G11/2" |
Key Selection
1. Viscosity and Temperature: For ultra-high viscosity fluids (>10⁵ cP), select the External Gear D-Series; for high-temperature melts, select a melt pump.
2. Flow Rate and Pressure: Flow rate ≤ 5 m³/h; pressure ≤ 35 MPa.
3. Material Characteristics: For fluids containing particulates, select wear-resistant materials; for fluids prone to solidification, select a jacketed design for thermal insulation; for food-grade applications, select 316 stainless steel with a polished finish.
4. Speed Control: The higher the viscosity, the lower the rotational speed required (e.g., for 10⁵ cP, a speed of ≤ 50 rpm is recommended); pair with a variable-frequency geared motor.
Installation and Maintenance Recommendations
1. Installation: Mount horizontally with the pump body positioned low to ensure the inlet pipe remains full.
2. Maintenance: Periodically inspect the gears and bearings for wear. When operating continuously under high-temperature conditions, avoid cold starts. If the pump is to remain idle for an extended period, drain the material to prevent solidification and seizing.
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