constant flow gear pump with constant flow relief valve

Constant flow gear pumps are widely used in agricultural machinery and industrial vehicles, particularly in hydraulic power steering systems. Their integrated constant flow relief valve ensures stable output flow, regardless of engine speed or load fluctuations, making them essential for precise, reliable hydraulic control.

1. Basic Working Principle

1. Consists of two gears—typically external gear pumps—driven by engine or motor.
2. Rotating gears draw liquid into the pump body; gear meshing pushes liquid from suction to discharge port.
3. The constant flow relief valve adjusts oil pressure as needed to maintain constant output flow, independent of engine speed or load.

2. Application Scenarios

1. Fully hydraulic steering: Provides stable flow for precise and smooth steering under various working conditions.
2. Hydraulic power assist: Ensures reliable, stable steering assistance even at high loads or low speeds.

3. Various Connection Methods

1. Multiple options for inlet/outlet connections to suit different hydraulic systems and ensure seamless oil flow.
2. Various shaft extension forms and front cover flange mounting methods for flexible adaptation to different drive modes and system configurations.

4. Technical Parameters

1. Displacement per revolution: 6 – 20 ml/rev
2. Working pressure: 10 MPa
3. Safety valve opening pressure: 12.5 MPa
4. Rated speed: 2000 rpm
5. Working speed range: 800 – 3000 rpm

5. Advantages

1. Stability: Maintains constant flow even with engine load and speed fluctuations, ensuring reliable hydraulic operation.
2. High efficiency: Automatically adjusts pressure for optimal performance, avoiding energy waste.
3. Safety: Integrated safety valve protects system from overpressure for safe operation.

6. Scope of Application

1. Agricultural machinery
2. Industrial vehicles
3. Construction machinery
4. Ships
5. Mining machinery
6. Other hydraulic applications requiring stable, reliable flow