First hand source of VICKERS vane pumps from the United States

First hand source of VICKERS vane pumps from the United States

1) Vickers single blade pump

The pump is composed of components such as rotor, stator, blades, oil distribution plate, and end cap. The inner surface of the stator is a cylindrical hole. There is eccentricity between the rotor and stator. The blades can slide flexibly in the slots of the rotor. Under the centrifugal force during rotor rotation and the pressure oil flowing into the root of the blades, the top of the blades is tightly attached to the inner surface of the stator, forming sealed working chambers between two adjacent blades, oil distribution plate, stator, and rotor. When the rotor rotates counterclockwise, the blades on the right side of the figure extend outward, and the volume of the sealed working chamber gradually increases, creating a vacuum. Therefore, oil is sucked in through the suction port and the window on the oil distribution plate. And on the left side of the picture. The blades retract inward, and the volume of the sealing chamber gradually decreases. The oil in the sealing chamber is squeezed out through another window of the oil distribution plate and the pressure port 1 and output into the system. This type of pump is called a single acting pump because it absorbs oil and pressurizes oil once during each rotation of the rotor. The rotor is subjected to radial hydraulic unbalance force, so it is also known as an unbalanced pump, and its bearing load is relatively high. Changing the eccentricity between the stator and rotor can change the displacement of the pump, so these pumps are all variable displacement pumps.

2) Vickers Double bladed Pump

Its working principle is similar to that of a single acting vane pump, with the only difference being that the stator surface is composed of eight parts: two long radius arcs, two short radius arcs, and four transition curves, and the stator and rotor are concentric. When the rotor rotates clockwise in the diagram, the volume of the sealed working chamber gradually increases at the upper left and lower right corners, which are the oil suction area, and gradually decreases at the lower left and upper right corners, which are the oil pressure area; There is a sealing area between the oil absorption area and the oil pressure area to separate them. This type of pump is called a double acting vane pump because each sealed working chamber completes two oil suction and pressure actions for each rotation of the rotor. The two suction zones and two 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.

1. Vickers vane pump is a type of hydraulic oil pump. The vane pump has higher wear resistance and wear resistance than ordinary vane pumps, and has good concentricity. If the concentricity is not good, it is easy to cause damage to the pump and motor, and may also cause shaft fracture. At the same time, it will produce a lot of noise, increase vibration, and generate less pressure. The blade pump is specifically designed to improve and innovate on such deficiencies, making the concentricity of the coupling uniform and flexible.

Below is an introduction to the troubleshooting methods for VICKERS V-series vane pumps:

(1) Check the plunger for scratches and rust, and replace it with a new one if necessary.

(2) Check the fit of the plunger pair. Insert the plunger end into the plunger sleeve and tilt it about 60 °. If the plunger can slowly slide down under its own action, it is considered a good fit.

(3) Check the sealing of the plunger pair. Grasp the plunger sleeve with your hand and block the oil inlet at the top and side of the plunger with two fingers. Pull out the plunger with the other hand and feel a strong suction force. Release the plunger and immediately retract it to its original position, indicating that the plunger pair is well sealed. Otherwise, the plunger pair should be replaced.

(4) Check whether the pressure reducing ring of the oil outlet valve is worn, has steps or scratches, and replace it if necessary.

(5) Check the fit of the oil outlet valve pair. Block the lower hole of the oil outlet valve with your finger, and gently press the oil outlet valve downwards with another finger. When the finger leaves the upper end of the oil outlet valve, it can automatically bounce back to its original position, indicating that the oil outlet valve pair is well sealed. Otherwise, the oil outlet valve pair should be replaced.

(6) Check the pillar body. The standard clearance between the fuel injection pump body and the plunger body is 0-0.03mm. If it exceeds 0.2mm, the parts should be replaced.

(7) Check the gap between the plunger flange and the groove of the control sleeve, which should be 0.02-0.08mm. If it exceeds 0.12mm, the control sleeve must be replaced

First hand source of VICKERS vane pumps from the United States