How the double acting vane pump works
Its principle of action is similar to that of a single-acting vane pump. The only difference is that the stator surface is composed of two long-radius arcs, two short-radius arcs and four sections of transition curves, and the stator and rotor are concentric. . In the case where the rotor of the illustrated rotor rotates clockwise, the volume of the sealed working chamber gradually increases at the upper left and lower right corners, which is the oil absorption zone, which gradually decreases in the lower left corner and the upper right corner, and is the oil pressure zone; the oil absorption zone There is a section of oil seal between the oil and pressure zones to separate them. Each time the rotor of the pump rotates once, each sealed working chamber completes the oil suction and oil pressure operations twice, so it is called a double-acting vane pump. The two oil suction zones and the two oil pressure zones of the pump are radially symmetrical, and the hydraulic pressure acting on the rotor is radially balanced, so it is also called a balanced vane pump.