1. What is Gear Pump Flow Rate?

Gear pump flow rate refers to the volumetric output of a gear pump, which is determined by the pump's displacement and rotational speed. It represents the volume of fluid the pump can deliver per unit time.

2. How Does the Calculator Work?

The calculator uses the gear pump flow rate formula:

Where:

• \( Q \) — Flow rate (L/min)
• \( Displacement \) — Pump displacement per revolution (cm³/rev)
• \( RPM \) — Rotational speed (revolutions per minute)
• \( 1000 \) — Conversion factor from cm³ to liters

Explanation: The formula calculates the theoretical flow rate based on the pump's geometric displacement and operating speed, assuming 100% volumetric efficiency.

3. Importance of Flow Rate Calculation

Details: Accurate flow rate calculation is essential for proper pump selection, system design, performance evaluation, and ensuring the pump meets the hydraulic system requirements.

4. Using the Calculator

Tips: Enter displacement in cm³/rev and RPM in rev/min. Both values must be positive numbers. The result will be displayed in liters per minute (L/min).

5. Frequently Asked Questions (FAQ)

Q1: What is pump displacement?
A: Pump displacement is the volume of fluid displaced per revolution of the pump shaft, determined by the pump's geometric design.

Q2: Is this the actual or theoretical flow rate?
A: This calculates theoretical flow rate. Actual flow rate may be lower due to factors like internal leakage, viscosity, and pump efficiency.

Q3: How does viscosity affect flow rate?
A: Higher viscosity fluids may reduce actual flow rate due to increased internal leakage and friction losses within the pump.

Q4: What is volumetric efficiency?
A: Volumetric efficiency is the ratio of actual flow rate to theoretical flow rate, typically ranging from 80% to 95% for gear pumps.

Q5: Can this formula be used for other pump types?
A: While similar principles apply, different pump types (vane, piston, etc.) may have different calculation methods and efficiency considerations.