
A hydraulic pump is a mechanical device that converts mechanical energy into hydraulic energy by moving fluid (usually oil) under pressure. The pump shown in your video is a piston-type hydraulic pump, specifically a radial or axial piston pump, commonly used in high-pressure applications like construction machinery, automotive systems, and industrial equipment.
🔄 Working Principle:
1. Rotary Motion Initiates Pumping: The pump shaft is driven by a motor, causing the cylinder block (with multiple pistons) to rotate. A driving gear or cam plate often causes the pistons to reciprocate.
2. Piston Movement: As the cylinder block rotates, the pistons move back and forth inside their bores due to the cam or swash plate's angular position. This action creates alternating suction and compression strokes.
3. Suction Stroke: When the piston moves away from the cam plate, it creates a vacuum in its chamber, drawing hydraulic fluid into the cylinder from the inlet port.
4. Compression Stroke: As the piston moves back toward the cam plate, it compresses the fluid and pushes it out through the outlet port under high pressure.
5. Continuous Flow: The rotation ensures continuous reciprocating movement of all pistons in sequence, producing a steady flow of hydraulic fluid.
6. Pressure Regulation: Most systems have pressure relief valves or regulators to ensure the fluid is delivered at the required pressure for system stability and safety.
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✅ Key Advantages:
High pressure and efficiency
Compact and durable design
Precise control in complex systems (e.g., excavators, injection molding machines)
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