Tag: #PumpDesign

Working Principle of a Double-Acting Vane Pump

Working Principle of a Double-Acting Vane Pump What Is a Double-Acting Vane Pump? A double-acting vane pump is a positive displacement pump in which: • The rotor rotates inside an elliptical cam ring • Multiple sliding vanes divide the space into sealed chambers • Two suction zones and two discharge zones are formed during each […]

Why Is the Single-Acting Vane Pump Called a Non-Unloading Pump

Core Reason: Permanent Eccentricity In a standard single-acting vane pump: The cam ring and rotor maintain fixed eccentricity Pump displacement remains constant Flow is continuously delivered during rotation There is no built-in pressure unloading path Therefore, the pump does not automatically unload under pressure, so it is called a non-unloading vane pump.   Hydraulic Behavior […]

Working Principle of a Single-Acting Vane Pump

Single-acting vane pumps are widely used in medium-pressure hydraulic systems due to their smooth flow output and stable operation. Understanding their working principle helps optimize system design and maintenance. 1.What Is a Single-Acting Vane Pump? A single-acting vane pump is a type of positive displacement pump that: • Uses a rotor mounted eccentrically inside a […]

How to Eliminate Oil Trapping in Hydraulic Pumps

Method 1: Add Pressure Relief Grooves Relief grooves are machined on side plates or valve plates to connect trapped chambers to low-pressure zones. This allows oil to escape gradually and prevents sudden pressure build-up. Method 2: Optimize Port Timing & Geometry Proper inlet and outlet port timing ensures trapped oil chambers are released at the […]