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Concrete Mixer Truck PV22 Hydraulic Pump for Danfoss: A Technical Analysis
I. Introduction
The PV22 hydraulic pump designed for concrete mixer trucks within the Danfoss system is an essential component that ensures the proper functioning of the mixing process during concrete transportation. It provides the necessary hydraulic power to drive the mixing drum, enabling the homogeneous mixing of concrete.
II. Design and Construction
A. Housing
The housing of the PV22 pump is a sturdy and durable structure. It is constructed from high - quality materials that are resistant to corrosion, which is crucial as it is exposed to the harsh environment of construction sites. This includes exposure to moisture, dust, and various chemicals. The housing also has the strength to withstand the mechanical stress caused by the movement of the concrete mixer truck and the vibrations of the mixing drum. It features well - designed connection ports and mounting points for seamless integration into the truck's hydraulic system. These connection ports ensure a proper connection with the hydraulic lines, and the mounting points provide stable support during operation.
B. Internal Components
1. Pistons
The pistons of the PV22 pump are precision - machined elements. They are usually made from high - strength materials like hardened steel alloys with excellent wear - resistance properties. The design of the pistons ensures a tight fit within the cylinders to minimize hydraulic fluid leakage. The surface of the pistons is carefully finished to reduce friction during their reciprocating motion. This low - friction design not only improves the efficiency of the pump but also extends the lifespan of the pistons. Their size and shape are optimized to generate the required pressure and flow rate for the mixer truck's hydraulic system.
2. Cylinders
The cylinders of the PV22 hydraulic pump are crafted with great precision. They are made from materials that can withstand high - pressure environments. The inner walls of the cylinders are machined to very tight tolerances and often have special surface treatments. These treatments enhance the smoothness of the walls, reducing friction and providing an effective seal with the pistons. The cylinders support 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 vital part of its design. It consists of 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 obstruction, ensuring a continuous and laminar flow of fluid. To prevent air from being drawn into the system, the inlet valves incorporate anti - cavitation features. The outlet valves direct the pressurized fluid from the pump to the hydraulic motor that drives the 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 crucial 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, thereby protecting the pump and other components of the hydraulic system from potential damage.
III. Operating Principle
A. Intake Stroke
During the intake stroke of the PV22 hydraulic pump, the pistons move in a way that creates a low - pressure area within the cylinders. This pressure differential causes the hydraulic fluid from the reservoir to flow into the pump through the inlet valves. The design of the pump ensures that the fluid intake is a seamless process. The pistons and the inlet valves are carefully coordinated to prevent any disruptions in the flow of fluid. Additionally, the intake system is designed to minimize the introduction of air bubbles into the hydraulic fluid. This is achieved through features such as optimized valve sizing and a carefully designed fluid path within the pump.
B. Compression and Discharge
Once the hydraulic fluid has entered the cylinders, during the compression stroke, the pistons move towards each other, reducing the volume of the fluid within the cylinders. This results in an increase in pressure. The pressurized fluid is then forced out through the outlet valves and directed towards the hydraulic motor of the mixing drum. The pressure generated by the pump is sufficient to overcome the resistance of the mixing drum, which includes factors such as the weight of the concrete, friction within the drum bearings, and any external forces acting on the drum during operation. The compression and discharge process is precisely controlled by the design of the pistons, cylinders, and valve system.
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 | KG | 78 | 63 |
Empower your industrial machinery with Bodeke - a leading Chinese manufacturer specializing in the repair and production of a wide range of equipment components.From cement tanker trucks and excavators to mixer trucks,cranes,hydraulic motors,and pumps,our precision-engineered products redefine reliability and performance.Elevate your operations with Bodeke's quality components-your trusted partner in global industrial excellence. | |||
Gearbox | Pump | Motor | |
PLM-7 reducer / gearbox | PMP7YR120 reducer / gearbox | 4623-552 pump | 4633 motor |
PLM-9 reducer / gearbox | PMP7.2R129 reducer / gearbox | 5423-518 pump | 5433-138 motor |
CML-10 reducer / gearbox | PMP7.1R130 reducer / gearbox | 6423-279 pump | 6433 motor |
CML-12 reducer / gearbox | PMP7.5R130 reducer / gearbox | 4623-552 pump | 4633 motor |
CML16 reducer / gearbox | PMP7.8R140 reducer / gearbox | 5423-518 pump | 5433-138 motor |
P3301 reducer / gearbox | PMP8.0R140 reducer / gearbox | 6423-279 pump | 6433 motor |
P4300 reducer / gearbox | PMP9YR140 reducer / gearbox | PV22 pump | MF22 motor |
P5300 reducer / gearbox | PMP7.5R134 reducer / gearbox | PV23 pump | MF23 motor |
P7300 reducer / gearbox | PMP7.5R135 reducer / gearbox | SPV22 pump | SMF22 motor |
PLM-7 reducer / gearbox | PMP7.5R136 reducer / gearbox | SPV23 pump | SMF23 motor |
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 |
P7300 reducer / gearbox | PMP 7.5cp reducer / gearbox | SPV112 pump | SMF112 motor |
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 |
PMB8.0R140 reducer / gearbox | TMG61.2 reducer / gearbox | PMH P90 pump | PMP M110 motor |
PMB9YR140 reducer / gearbox | TMG71.2 reducer / gearbox | A4VTG090HW100/33MRNC4C92F0000AS-0 pump | PMH M90 motor |
PMB7.5R134 reducer / gearbox | P58 reducer / gearbox | A4VTG90HW/32R-NLD10F001S pump | PMH M110 motor |
PMB7.5R135 reducer / gearbox | P68 reducer / gearbox | A4VTG71 hydraulic piston pump | PMH M90 motor |
PMB7.5R136 reducer / gearbox | P70 reducer / gearbox | T90R100-35-20 hydraulic piston pump | A2FO23 PISTON pump |
PMB 6sp reducer / gearbox | P75S reducer / gearbox | T90L100 hydraulic piston pump | A2FO16 PISTON pump |
PMB 6.5sp reducer / gearbox | P75R reducer / gearbox | T90R75hydraulic piston pump | A2FO18 PISTON pump |
PMB 7.1sp reducer / gearbox | P80 reducer / gearbox | T90L75hydraulic piston pump | VB99-17 reducer / gearbox |
PMB 7.5sp reducer / gearbox | P90S reducer / gearbox | A11VO40DRG/10R-NPC12N00 PISTON pump | A2FO32/61L-VAB05 PISTON pump |
PMB 6cp reducer / gearbox | P90 reducer / gearbox | A11VLO190LRDU2/11R-NZD12K02P-S PISTON pump | HA4VTG090HW/33R |
PMB 6.5cp reducer / gearbox | TOP P58 reducer / gearbox | A11VLO190LRDU2+A11VLO130LRDU2 PISTON pump | A4VG125HDMT1/32R-NSF02F021-S Piston pump |
PMB 7.1cp reducer / gearbox | TOP P68 reducer / gearbox | A11VLO190LRDU2/11+A10VO28DR/31-K PISTON pump | PK86-BF reducer / gearbox |
PMB 7.5cp reducer / gearbox | TOP P70 reducer / gearbox | A11VLO190LRDU2/11L-NZD12K02P-S PISTON pump | VB99-09 reducer / gearbox |
PMP 6.0 reducer / gearbox | TOP P75S reducer / gearbox | A11VLO260LRDU2/11R+A10VO28DR/31R pump | VB99-10 reducer / gearbox |
PMP6R100 reducer / gearbox | TOP P75R reducer / gearbox | A11VLO260LRDU2/11R-NZD12K67P-S PISTON pump | ZHP P70 reducer / gearbox |
PMP6.5R120 reducer / gearbox | TOP P80 reducer / gearbox | A11VLO260LRDU2/11R-NZD12K02P-S PISTON pump | Transit Mixer Agitator Truck Concrete Transport Vehicle |
PMP7aspR120 reducer / gearbox | TOP P90S reducer / gearbox | A11VLO260LRDH2/11R-NZD12K02 PISTON pump | 8413503190 |
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 |
ZTS P70 reducer / gearbox | DD33-MF reducer / gearbox | A7VO55LRDS/63L-NZB01-S PISTON pump | 8483402000 |
ZTS P75S reducer / gearbox | ZHP P68 reducer / gearbox | Concrete Mixer Truck Mixer Drum Cement Mixer | SAUER,Bonfiglioli,TOPUNIOU,KYB,REXROTH, , ,PMP |