danfoss vickers vane pump
2 week ago
Product details
Danfoss Vickers Vane Pump: Detailed Introduction
I. Basic Information
Danfoss Vickers vane pumps, a globally renowned hydraulic brand under Eaton's Fluid Power division, are widely used in sectors such as earthmoving machinery, agriculture, construction, aviation, mining, forestry, public utilities, and material handling. Renowned for their long lifespan, high productivity, and application flexibility, these pumps offer the following features:
• High Efficiency: Delivering over 90% volumetric efficiency at an operating pressure of 210 bar (3000 psi).
• Low Noise: Operating noise as low as 62 dB(A), suitable for demanding industrial environments.
• Easy Maintenance: Quick on-site repairs through pump cartridge replacement, minimizing downtime.
• Compact Design: Small size, easy installation, and high design flexibility, available in single, double, and through-drive configurations.
II. Technical Parameters
Danfoss Vickers vane pumps come in multiple series, with key technical parameters as follows:
• Displacement Range: For example, V10 series offers 6-22 cm³/r, V20 series 19-42 cm³/r, and high-pressure models like 25VMQ provide 10-80 cm³/r.
• Maximum Pressure: Single pumps can reach up to 160 bar (2300 psi), with high-pressure models like 25VMQ reaching 260 bar (3770 psi).
• Speed Range: Typically up to 1800 rpm, with some high-pressure models reaching 3000 rpm.
• Special Features: 12-vane design reduces flow pulsation, hydraulic balance design extends lifespan, and cartridge kits allow for flexible installation and on-site maintenance.
III. Working Principle
Danfoss Vickers vane pumps are categorized intodouble-acting pumpsandsingle-acting pumps, with core components including stator, rotor, vanes, and valve plate:
1. Double-Acting Pump:
• Stator Cavity: Approximately elliptical, composed of long and short radius arcs and transition curves.
• Operating Principle: As the rotor rotates, vanes move outward under centrifugal force, forming sealed working chambers. When vanes move from the small arc to the large arc, the sealed chamber volume increases, drawing oil. During the return stroke, the volume decreases, pressurizing the oil. The rotor completes two suction and discharge cycles per revolution, with balanced radial oil pressure forces.
2. Single-Acting Pump:
• Stator Cavity: Cylindrical, with the rotor installed eccentrically.
• Operating Principle: Vanes are pressed against the stator inner surface by centrifugal force and root pressure oil, forming sealed chambers. As the rotor rotates, vanes extend on one side for suction and retract on the other side for discharge. The rotor completes one suction and discharge cycle per revolution, with unbalanced radial oil pressure forces.
IV. Advantages and Disadvantages
1. Advantages:
• High Efficiency and Low Noise: High volumetric efficiency and low noise, suitable for high-precision and quiet environments.
• Application Flexibility: Multiple series and displacement options to meet varying flow and pressure demands.
• Easy Maintenance: Quick cartridge replacement reduces downtime.
• Mature Technology: Reliable product design with positive market feedback.
2. Disadvantages:
• Complex Structure: High manufacturing precision required, vanes prone to jamming.
• Oil Sensitivity: Sensitive to oil cleanliness and viscosity, requiring strict maintenance.
• Start-Up Speed: Relatively high minimum start-up speed (typically 600 rpm), requiring matched servo system control.
V. Market Applications
Danfoss Vickers vane pumps are extensively used in applications requiring high pressure, large flow rates, and flow regulation:
• Construction Machinery: Hydrauli c drive systems in excavators, loaders, and bulldozers.
• Agricultural Machinery: Hydrauli c controls in tractors and harvesters.
• Industrial Equipment: Hydrauli c transmissions in machine tools, metallurgical machinery, and mining equipment.
• Specialized Fields: Aerospace ground equipment, offshore platform machinery, and concrete machinery (pump trucks, mixers).
• Hydrauli c Systems: As main or auxiliary pumps, providing stable power sources.
VI. Conclusion
With their high efficiency, low noise, flexibility, and reliability, Danfoss Vickers vane pumps hold a significant position in the hydraulic field. Their wide range of applications and mature technology make them a preferred hydraulic component in industrial equipment.
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