The PVQ series is a line of axial - piston variable - displacement pumps, which are widely used in various industrial and mobile hydraulic fields. The following is a detailed English introduction:
Product Features
- Variable Displacement: The PVQ series offers variable displacement capabilities. It can precisely control the flow and pressure to meet the specific requirements of different industrial applications, providing strong adaptability.
- Quiet Operation: Designed with a patented timing arrangement, these pumps operate at a low noise level. The noise level of each pump is close to or lower than that of the driving motor, which is suitable for noise - sensitive environments and can also reduce the noise of the entire hydraulic system.
- Wide Range of Sizes: Available in 9 specifications, the PVQ pumps can handle a variety of applications, from moderate to high - pressure systems, and can be flexibly selected according to specific needs.
- Fluid Compatibility: It is compatible with a variety of hydraulic fluids, including petroleum - based hydraulic oils, synthetic hydraulic oils, water - containing hydraulic fluids, and phosphate ester hydraulic fluids, which improves its versatility in different working conditions.
- Durable Construction: The PVQ pumps are made of high - quality components and have a robust structure. They can maintain reliable performance even in harsh working conditions, with a long service life, reducing the frequency of replacement and maintenance and lowering the overall cost.
- Thru - drive Capability: Many PVQ pumps have a thru - drive design, which can be coupled with various types and specifications of fixed - displacement pumps and variable - displacement pumps, forming a compact and flexible component. This design can reduce the installation space and cost, and only requires one mounting seat on the prime mover.
- Multiple Control Options: The series provides a variety of control methods, such as pressure compensators, load - sensing compensators, and remote - control functions. Users can choose the appropriate control mode according to the actual working conditions to achieve the best performance.
Technical Parameters
- Displacement Range: Generally, it ranges from 10 cc/rev (0.61 in³/rev) to 280 cc/rev (17.09 in³/rev), and the displacement of specific models may vary.
- Pressure Rating: The rated pressure is usually 280 bar (4060 psi), and some models can reach 350 bar (5075 psi). Some models can also withstand short - term peak pressures, and the specific value needs to refer to the product manual.
The Vickers series of piston pumps, with their excellent performance and reliable quality, occupy an important position in the field of hydraulic pumps, and are the preferred products for many industrial hydraulic equipment.
The PVQ series of axial-piston variable-displacement pumps have a wide range of applications in multiple industries due to their outstanding performance and reliable quality:
1. Industrial Machinery
- Plastic Machinery: In injection molding machines, the PVQ pumps precisely control the hydraulic pressure and flow. This ensures accurate movement of the injection unit and the mold clamping system. For example, during the injection process, the pump provides a stable high - pressure flow to fill the mold cavity with molten plastic quickly and evenly, which is crucial for producing high - quality plastic products with consistent dimensions and surface finish. In blow - molding machines, the PVQ pumps also play a vital role in controlling the extrusion and inflation of the plastic pre - form.
- Metalworking Machinery: In forging presses and stamping machines, these pumps supply high - pressure hydraulic power. The variable - displacement feature allows for the adjustment of the force according to the material being processed and the complexity of the forging or stamping operation. For instance, when forging large - scale metal components, the PVQ pump can provide a large amount of high - pressure oil to deform the metal effectively. In metal - cutting machine tools like lathes, milling machines, and grinding machines, the pumps are used to drive the hydraulic actuators for workpiece clamping, tool feeding, and spindle lubrication, guaranteeing smooth operation and high - precision machining.
2. Construction and Mining Equipment
- Construction Machinery: Excavators, loaders, and bulldozers rely on the PVQ pumps for their hydraulic systems. In excavators, the pumps power the boom, arm, and bucket cylinders, enabling smooth and powerful digging, lifting, and dumping operations. The ability to adjust the flow and pressure according to the working conditions helps improve the efficiency and fuel economy of the equipment. For loaders, the pumps provide the necessary hydraulic force for lifting and transporting heavy materials, while also ensuring the stability of the machine during operation.
- Mining Equipment: In underground mining trucks, the PVQ pumps are used in the hydraulic braking systems and the lifting mechanisms for the dump bodies. In mining machinery such as rock crushers and conveyor systems, the pumps supply the hydraulic power for operation. Given the harsh working environment in mines, the durability and reliability of the PVQ pumps make them well - suited for these applications, as they can withstand vibrations, dust, and extreme temperatures.
3. Marine and Offshore Applications
- Marine Vessels: On ships, the PVQ pumps are used in various hydraulic systems, including the steering gear, anchor winches, and deck cranes. For the steering gear, the pumps ensure smooth and responsive steering control, which is essential for the safe navigation of the vessel. In anchor - handling operations, the pumps provide the high - torque hydraulic power required to raise and lower the heavy anchors. Deck cranes use the PVQ pumps to lift and move cargo, and the variable - displacement function allows for precise control of the lifting speed and load - handling capacity.
- Offshore Platforms: In offshore oil and gas production platforms, the PVQ pumps are applied in hydraulic systems for equipment such as well - head control units, pipe - handling machinery, and crane systems. These pumps need to operate reliably in the harsh marine environment, withstanding saltwater corrosion and strong winds. Their high - pressure capabilities and variable - displacement features are crucial for handling the heavy - duty operations on offshore platforms.
4. Agricultural Machinery
- Tractors and agricultural implements often use PVQ pumps in their hydraulic systems. For tractors, the pumps power the three - point hitch, which is used to attach and operate various implements such as plows, cultivators, and mowers. The variable - displacement function allows the tractor operator to adjust the hydraulic power according to the type of work and the terrain conditions. In large - scale agricultural machinery like combine harvesters, the PVQ pumps are used to drive the cutting, threshing, and conveying mechanisms, ensuring efficient and smooth harvesting operations.
5. Power Generation and Energy-Related Industries
- Wind Turbines: In wind turbine systems, the PVQ pumps are used in the hydraulic pitch - control and yaw - control systems. The pitch - control system adjusts the angle of the turbine blades to optimize the power generation efficiency according to the wind speed and direction. The yaw - control system uses the pumps to rotate the turbine nacelle to face the wind. The high - reliability and precise control capabilities of the PVQ pumps are essential for the stable operation of wind turbines, which often operate in remote and harsh environments.
- Hydraulic Power Units in Power Plants: In some power plants, especially those with hydraulic - actuated control systems, the PVQ pumps are used to supply hydraulic power for valve control, turbine - governor systems, and other critical components. Their ability to provide stable and adjustable hydraulic pressure is crucial for the efficient and safe operation of the power - generation equipment.
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