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After-sales Service: | One Year |
Warranty: | One Year |
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Concrete Mixer Truck PV22 Hydraulic Pump for Danfoss: A Detailed Technical Description
I. Introduction
The PV22 hydraulic pump designed for concrete mixer trucks within the Danfoss system is an essential component that plays a critical role in the efficient operation of these vehicles. It is the key element responsible for providing the necessary hydraulic power to drive the concrete mixing drum, ensuring the proper mixing of concrete during transportation. This pump is engineered to meet the specific demands of the construction environment, combining reliability, durability, and high - performance characteristics.
II. Design and Construction
A. Housing
The housing of the PV22 hydraulic pump is a robust and well - engineered structure. It is typically constructed from high - quality materials such as cast iron or high - strength aluminum alloys, chosen for their ability to withstand the harsh conditions of a concrete mixer truck's operation. These materials offer excellent resistance to mechanical stress, including the continuous vibrations from the truck's movement on various terrains and the dynamic forces generated during the mixing process.
Moreover, the housing is designed to be highly resistant to corrosion, as it is constantly exposed to environmental factors like dust, moisture, and temperature variations at construction sites. The outer surface may have a protective coating or finish to further enhance its durability. The design also takes into account the need for easy installation within the truck's hydraulic system, with precisely machined mounting points and connection ports that ensure proper alignment and a secure connection to other hydraulic components.
B. Internal Components
1. Pistons
The pistons of the PV22 pump are precision - machined components that are vital for its operation. They are usually fabricated from high - quality materials such as hardened steel or specialized alloys with excellent wear - resistance properties. The design of the pistons ensures a perfect fit within the cylinders, with minimal clearance to reduce internal leakage of hydraulic fluid.
The surface finish of the pistons is carefully controlled to achieve ultra - low friction during their reciprocating motion. This not only improves the efficiency of the pump but also significantly reduces wear and tear, thereby extending the lifespan of the pistons. The size and shape of the pistons are optimized to generate the required pressure and flow rate for the concrete mixer truck's hydraulic system. Each piston is carefully balanced to ensure stable operation under high - pressure and high - speed conditions typical in the mixing process.
2. Cylinders
The cylinders of the PV22 hydraulic pump are crafted with utmost precision. They are made from materials that can endure high - pressure environments and maintain their structural integrity over time. The inner walls of the cylinders are machined to extremely tight tolerances and may be treated with special coatings or surface treatments.
These treatments enhance the smoothness of the walls, reducing friction and providing an excellent seal with the pistons. The cylinders are designed to provide proper support to the pistons throughout their entire stroke, enabling efficient transfer of hydraulic fluid during both the compression and expansion phases of the pump's operation.
3. Valve System
The valve system of the PV22 pump is a complex and crucial part of its design. It consists of various types of valves, including inlet valves, outlet valves, and pressure - control valves.
The inlet valves are responsible for allowing the hydraulic fluid to enter the pump from the reservoir. They are designed to open smoothly and without any obstruction, ensuring a continuous and laminar flow of fluid. Special attention is paid to preventing air from being drawn into the system during the intake process, as air entrapment can lead to cavitation and a significant reduction in pump efficiency.
The outlet valves direct the pressurized fluid from the pump to the hydraulic motor that drives the concrete mixing drum. These valves are built to withstand high - pressure conditions and open and close with great precision to control the flow of fluid.
The pressure - control valves play a vital role in maintaining the stability of the hydraulic system. They constantly monitor the pressure within the pump and adjust the flow of fluid as needed to prevent over - pressure or under - pressure situations. This helps to protect the pump and other components of the hydraulic system from potential damage.
Model NO. | PV22 | Model | PV22 |
Performance | Same as Original | Pressure | 36MPa |
Lead Time | 5 Days | Transport Package | Standard Export Wooden Case |
Colour | as Your Request | Usage | Concrete Mixer |
Weight | 85KG | Specification | 52*36*36 |
Trademark | Bodeke | Origin | China |
HS Code | 8413503190 | Production Capacity | 100 Sets/Month |
Technical data of Mixer hydraulic pressure | |||
Model | unit | PV23 | PV22 |
Max. Output per minute | cm³ | 89 | 69.8 |
Pump output per revolution | cm³ | 18.03 | 18.03 |
Maximum pressure | MPa | 35 | 35 |
Rated pressure | MPa | 21 | 21 |
Max. Control pressure | MPa | 3.5 | 3.5 |
Refueling pressure | MPa | 0.8-2.0 | 0.8-2.0 |
Max. Shell pressure | MPa | Constant0.25,Peak0.5 | Constant0.25,Peak0.5 |
Max. Rotational speed | min-1 | 2590 | 2810 |
Min. Rotational speed | min-1 | 500 | 500 |
Rated speed | min-1 | 1500 | 1500 |
Dynamic viscosity range of working fluid Starting Operating Optimal condition |
mm²S-1 | 1000 12-300 25-35 |
1000 12-300 25-35 |
Type of working fluid | Mineral lubricant | Mineral lubricant | |
Working temperature | ºC | -40~+50 | -40~+50 |
Highest temperature in fuel tank | ºC | 80 | 80 |
of working fluid | μm | 10 | 10 |
Orientation of axis | Clockwise or counterclockwise | Clockwise or counterclockwise | |
Max. Shear plate inclination angle | ° | ±18° | ±18° |
Weight | KG | 78 | 63 |
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CML16 reducer / gearbox | PMP7.8R140 reducer / gearbox | Eaton 5423-518 pump | Eaton 5433-138 motor |
P3301 reducer / gearbox | PMP8.0R140 reducer / gearbox | Eaton 6423-279 pump | Eaton 6433 motor |
P4300 reducer / gearbox | PMP9YR140 reducer / gearbox | PV22 pump | MF22 motor |
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P7300 reducer / gearbox | PMP7.5R135 reducer / gearbox | SPV22 pump | SMF22 motor |
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PLM-9 reducer / gearbox | PMP6sp reducer / gearbox | PV070 pump | MF070 motor |
CML-10 reducer / gearbox | PMP 6.5sp reducer / gearbox | PV089 pump | MF089 motor |
CML-12 reducer / gearbox | PMP 7.1sp reducer / gearbox | SPV070 pump | SMF070 motor |
CML16 reducer / gearbox | PMP 7.5sp reducer / gearbox | SPV089 pump | SMF089 motor |
P3301 reducer / gearbox | PMP 6cp reducer / gearbox | PV110 pump | MF110 motor |
P4300 reducer / gearbox | PMP 6.5cp reducer / gearbox | SPV110 pump | SMF110 motor |
P5300 reducer / gearbox | PMP 7.1cp reducer / gearbox | PV112 pump | MF112 motor |
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PMB 6.0 reducer / gearbox | 575L reducer / gearbox | PV090 pump | MF090 motor |
PMB6R100 reducer / gearbox | 577L reducer / gearbox | SPV090 pump | SMF090 motor |
PMB6.5R120 reducer / gearbox | 580L reducer / gearbox | A4VTG71pump | TMM070 motor |
PMB7aspR120 reducer / gearbox | 575S3W reducer / gearbox | A4VTG90 pump | TMM089 motor |
PMB7.1R120 reducer / gearbox | 577S3W reducer / gearbox | 90C pump | AA2FM63/A2FM90/61W Piston Motor |
PMB7YR120 reducer / gearbox | 580S3W reducer / gearbox | 90A pump | AA2FM80/A2FM90/62W Piston Motor |
PMB7.2R129 reducer / gearbox | PM51.2 reducer / gearbox | MA4V090 pump | AA2FM90/A2FM90/63W Piston Motor |
PMB7.1R130 reducer / gearbox | PM61.2 reducer / gearbox | PMP P110 pump | 90M75 motor |
PMB7.5R130 reducer / gearbox | PM71.2 reducer / gearbox | PMP P90 pump | 90M100 motor |
PMB7.8R140 reducer / gearbox | TMG51.2 reducer / gearbox | PMH P110 pump | MSF85 motor |
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PMP7.1R120 reducer / gearbox | TOP P90 reducer / gearbox | A10VO28DR/31R-VSC12K01 PISTON pump | 8412291000 |
ZTS P68 reducer / gearbox | ZHP P75S reducer / gearbox | A4VG180HD1MT1/32R-NSF02F021-S PISTON pump | 8708919000 |
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ZTS P75S reducer / gearbox | ZHP P68 reducer / gearbox | Concrete Mixer Truck Mixer Drum Cement Mixer | SAUER,Bonfiglioli,TOPUNIOU,KYB,REXROTH, , ,PMP |