1. What is Volume Displaced Per Revolution?

Volume displaced per revolution for gear pump is the volume of the fluid discharged per revolution from the gear wheel pump. This parameter is crucial for determining the pump's efficiency and capacity in hydraulic systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( V_g \) — Volume displaced per revolution (m³/rev)
• \( a_g \) — Area between successive teeth and casing (m²)
• \( L_t \) — Axial Length of Gear Teeth of pump (m)
• \( N \) — Speed of gear pump (rpm)

Explanation: The formula calculates the theoretical volume of fluid displaced per revolution based on the pump's geometric parameters and rotational speed.

3. Importance of Volume Calculation

Details: Accurate volume calculation is essential for determining pump performance, system flow rates, and ensuring proper hydraulic system design and operation.

4. Using the Calculator

Tips: Enter the area between teeth and casing in m², axial length in meters, and pump speed in rpm. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What factors affect the volume displaced per revolution?
A: The volume depends on the gear geometry (tooth profile, axial length), casing design, and operating speed of the pump.

Q2: How does this differ from actual flow rate?
A: This is the theoretical displacement volume. Actual flow rate may be less due to internal leakage, fluid compressibility, and other efficiency factors.

Q3: Can this formula be used for all gear pump types?
A: This formula is specifically designed for external gear pumps. Internal gear pumps may require different calculations.

Q4: What are typical values for gear pump displacement?
A: Displacement volumes vary widely from small pumps (0.1-1 cm³/rev) to large industrial pumps (100+ cm³/rev).

Q5: How does temperature affect the calculation?
A: Temperature affects fluid viscosity and thermal expansion of components, which can indirectly affect the actual displacement volume.