Low-Pressure-Variable Hydraulic Vane Pump For Construction Machine

Model 1: Low pressure variable vane pumps VP1-12,15,20; VP2-30,40

Model 2: low pressure variable double vane pumpsVVP1-20/20, VVP2-30/30,40/40

Specifiion:

In 1800rpm3.5kg/cm2the flow rate of double pump 20-20L/min

In 1800rpm3.5kg/cm2the flow rate of double pump 20-20L/min

The working principle of vane pump:

1. The vane pump converts the mechanical energy of the power machine into hydraulic energy (potential energy, kinetic energy, pressure energy) through the rotation of the impeller. Vane pump products are generally not called vane pumps. But as a monograph, vane pumps almost all refer to centrifugal pumps, mixed flow pumps, axial flow pumps, etc. The vane pump specifically refers to the sliding vane pump in the positive displacement pump. The vane pump refers to the three pumps (centrifugal pump, mixed flow pump, axial flow pump) or other special pumps of the power pump. Vane pumps can be divided into vane variable pumps and vane quantitative pumps according to whether their theoretical displacement per revolution is a fixed value or a variable value.

2. When the rotor of the vane pump rotates, the tip of the vane is tightly attached to the inner surface of the stator under the action of centrifugal force and pressure oil. In this way, the working volume formed by the inner surfaces of the two blades, the rotor and the stator, first sucks oil from small to large, and then discharges oil from large to small. When the blades rotate one circle, oil absorption and oil discharge are completed twice.

3. Working principle of single-acting vane pump
The pump is composed of rotor, stator, vane, oil distribution plate and end cover. The inner surface of the stator is a cylindrical hole. There is an eccentricity between the rotor and the stator. The blades can slide flexibly in the slots of the rotor. Under the action of the centrifugal force during the rotation of the rotor and the pressure oil at the root of the blade, the top of the blade is attached to the inner surface of the stator, so two adjacent blades, the oil distribution plate, the stator and the rotor Formed a sealed working cavity. When the rotor rotates in a counterclockwise direction, the blades extend outward, and the volume of the sealed working chamber gradually increases, creating a vacuum, so the oil is sucked in through the oil suction port and the upper window of the oil distribution plate. The blades retract inward, and the volume of the sealed cavity is gradually reduced. The oil in the sealed cavity is pressed out through another window of the oil distribution plate and the oil pressure port 1 and output to the system. This kind of pump sucks oil and pressurizes oil once during one revolution of the rotor, so it is called single-acting pump. The rotor is subjected to radial hydraulic unbalanced force, so it is also called unbalanced pump, and its bearing load is relatively large. The displacement of the pump can be changed by changing the eccentricity between the stator and the rotor, so this type of pump is a variable pump.

4. Working principle of double-acting vane pump
Its working principle is similar to that of a single-acting vane pump. The difference is that the stator surface is composed of eight parts of two long radius arcs, two short radius arcs and four transition curves, and the stator and rotor are concentric. . In the that the rotor rotates clockwise in the figure, the volume of the sealed working chamber gradually increases at the upper left and lower right corners, which is the oil suction area, and gradually decreases at the lower left and upper right corners, which is the oil pressure area; There is a section of oil seal area between the oil pressure area and separate them. Each time the rotor of this pump rotates, each sealed working chamber completes oil suction and oil pressure twice, so it is called a double-acting vane pump. The two suction zones and two pressure zones of the pump are radially symmetrical, and the hydraulic pressure acting on the rotor is radially balanced, so it is also called a balanced vane pump.

Hydraulic vane pumps and vane motors. We supply a wide range of products, such as Denison T6 series, Denison motor M4C series, Eaton Vickers V, VQ, V10, V20 ,VTM42 power steering pump series, Eaton Vickers vane motors 25M 35M 45M 50M series, Tokimec SQP series,50T 150T and Yuken PV2R series. The products are widely applied in mining construction machinery, materials handling equipment, heavy metallurgical machinery, petroleum mining machinery, ship deck machinery, machine tools, light industry, plastic machinery, geological drilling equipment, agricultural and forestry machinery, mineral machinery, construction equipment, and work platform, lawn mowers, special vehicles, fishing winches, machine tools, woodworking and sawing machines, rubber machinery and other machinery in the hydraulic system.

Elephant Fluid Power has been engaged in the hydraulic business since the beginning of the 20th century. It has a history of nearly 20 years and has always been upholding the principles of ‘quality first’, “credit first” and “zero complaint”, and has become a new leader in the hydraulics industry. Elephant Fluid Power insists on good products, good service, and has been providing customers with better, more comprehensive hydraulic products, and constantly working hard.

Now our main business are:

Pump Spare parts Product center:

Our cooperation brand include EATON, VICKERS, SAUER, LINDE, KOMASTU, HANJIU, KAWASAKI, NACHI, PAKER, REXROTH, , LIBEEHER …

Elephant Fluid Power Advantages:

Elephant Fluid Power Technical team has many years of operation and service experience,Provide customers with professional hydraulic system solutions,Quality assurance of quality products,We have many years of experience in purchasing and sales to prevent counterfeit and shoddy products,1-7 days, fixed sales engineer, agreement specific delivery period,Years of industry experience, sales, repairs, commissioning, maintenance,Super fast one-stop professional service,Provide technical response within 2 hours of standard warranty,Effectively guarantee the quality of hydraulic products,Worry-free delivery time 1300 kinds in stock,One-stop service, directly with the manufacturer,Provide complete hydraulic system solutions,Comprehensive guidance to provide technical services within 1 working day,Rigorous processing and excellent quality