Origin	Wenzhou
Model Number	VPV

VPV variablee hydraulic vane pump unit's Application & features

    VPV variable vane pump unit is a limited-variable vane pump pressure is the pressure and flow rate adjustment device adjusting device. variablee hydraulic vane pump flow output load changes can be automatically adjusted according to work load output power and the speed and size of load line, have a highly-efficient, energy-saving, safe, reliable, price concessions, and other characteristics, in particular apply to the governor for the volume of the hydraulic system sources of power, such as metal-cutting machine tools, pressure machinery, leather machinery, such as hydraulic station.

    VPV variable vane pump unit with pressure adjustment and flow conditioning, when the system pressure variable vane pump is set higher than the pressure flow will be reduced, reduced to the minimum power loss, high efficiency, safety and reliability, using hydraulic balance boards, better volumetric efficiency, using several kinds of anti-vibration noise, low noise, vibration-free.

VPV variablee hydraulic vane pump unit's Notes

1. Variablee hydraulic vane pump unit not directly bear axis radial force and the axial force, so as to avoid damage to pump anomaly.
2. Required for installation carefully rub-hole and the shaft connecting the surface to reduce the vibration caused by the vane pump shaft surface fretting, long-term accuracy with shaft sizes.
3. Oil attention to the distinction between the mouth and mouth filling. I usually into oil, filling small mouth, not reversed, when the hydraulic vane pump test to comply with the direction of the arrow signs, the motor can be activated to normal vane pump for oil after officially started.
4. Variablee hydraulic vane pump unit of the oil absorption height less than 500 mm, the pump intake pressure of 0.02 MPa to 0.025 between hydraulic vane pump displacement of the greater requirements of the higher pressure inhalation.
5. Variablee hydraulic vane pump the oil into the mouth of the joint until the fuel tank over the entire surface oil pipelines and oil absorption annex engagement must strictly sealed and not part of any leakage, otherwise, they will produce large quantities in the fuel tank foam, air pump that will produce respirable cavitation caused vane pump noise, and damage to the hydraulic system caused the vibration.
6. To prevent inhalation of debris vane pump and reduce wear and tear, variablee hydraulic vane pump the oil into the mouth to install the 100 ~ 180 um Oil Filter and its ability to filter pump flow rate should be not less than three times, while recommended in the mouth for oil pipeline oil the installation accuracy of 30 ~ 50 um Oil Filter to ensure the cleanliness of oil, and improve the stability of the hydraulic system hydraulic components of a working life.
7. To ensure that the high-pressure variable vane pump unit performance, long life, variablee hydraulic vane pump system should use anti-wear hydraulic oil, recommended use of anti-wear N46 hydraulic oil, long-term work in the oil Wenyi 10 °C to 65 °C within . Hydraulic vane pump unit design to use a closed tank, Oil Filter need regular cleaning and inspection of the quality of oil on the actual situation of the replacement oil.

VPV variable hydraulic vane pump unit for use

• Rotation direction: clockwise direction (see from the shaft for the standard), a special anti-clockwise pattern, the direction of rotation can be instantaneous confirmed starter motor to confirm.
• Hydraulic Oil: 70 bar below, the use of 40 °C viscosity 30,50 cSt (ISOG32) hydraulic oil.
• Vent tubing pressure: China must direct pipeline from the oil-tank, and piping from the back pressure to remain at 0.3 bar below.
• Temperature: Unit continuously operating temperature of 15-65 °C.
• With the axis: VPV variable leaves the eccentric shaft and motor biggest difference was 0.02 mm, angle error 10.
• Range pressure: VPV variable hydraulic vane pump oil absorption mouth pressure of 0.3 bar to 0.4 bar.
• Displacement adjustment: adjustment displacement, the first Nut relax regulation, then rotating adjustment screw, turn right to reduce traffic, then turn left increase after adjusting nut on tight.
• Turn left pressure adjustment pressure adjustment screw so that the output pressure lowering, turn right, then increased.
• Peak VPV new variable vane pump started running, in the absence of pressure to state repeatedly starter motors, and to exclude pump suction pipe injection in the air. To ensure that the air exclusion system, in the no-load condition, continuous operation for 10 minutes.

VPV variable vane pump unit's use parameter table