Yes, but with some important considerations:
1.Advantages for Metering Pellets/Regrind:
Consistent Pocket Volume: Each rotation delivers a fixed volume, enabling precise control.
Durability: Rotary valves are well-suited to handle abrasive or irregular materials like regrind.
Integration with VFDs: When combined with a variable frequency drive (VFD), the rotation speed can be adjusted to match varying flow rates.
2.Key Considerations:
Flowability of Material:
Plastic pellets generally flow well.
Regrind can be irregular and may bridge or flood if not handled carefully.
Air Leakage or Pressure Differential:
If used in pneumatic conveying, air leakage across the rotor must be minimized for accuracy.
Clearance & Rotor Design:
Close tolerances and correct rotor type (e.g., scalloped or V-rotors) improve metering precision, especially for lightweight or flaky regrind.
Speed Control:
For varying flow rates, the rotor speed must be adjustable—VFDs are commonly used.
Feeding Consistency:
For fine-tuned metering, it's often helpful to have a feeder or agitator above the valve to ensure constant material feed into the pockets.
Let me know if you need help recommending a specific rotary valve for this application.