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Variable piston pump working principle

Time: 2019-04-15 10:22:58

Author: 佛山市力飞液压设备有限公司

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Variable plunger pump is a reciprocating pump, a volume pump, in its work. Its plunger by pump shaft eccentric rotation drive, reciprocating movement, its suction and discharge valve is a one-way valv

Variable plunger pump is a reciprocating pump, a volume pump, in its work. Its plunger by pump shaft eccentric rotation drive, reciprocating movement, its suction and discharge valve is a one-way valve. When the plunger is pulled out, the pressure in the working chamber will decrease, and the outlet valve will close. When the pressure is lower than the inlet pressure, the inlet valve will open and the liquid will enter. When the plunger is pushed inward, the pressure of the workroom will rise, and the inlet valve will close. When the pressure is higher than the outlet valve, the outlet valve will open and the liquid will be discharged.

When the drive shaft drives the cylinder block to rotate, the swash plate pulls or pushes the plunger out of the cylinder block to complete the oil suction and discharge process. The oil in the working capacity chamber composed of plunger and cylinder hole is communicated with the suction and discharge Chambers of the pump respectively through the oil distribution plate. The variable mechanism is used to change the inclination of the swash plate. The displacement of the pump can be changed by adjusting the inclination of the swash plate.

Variable piston pump is an important device of hydraulic system. It relies on the reciprocating movement of the plunger in the cylinder block, so that the volume of the sealed working chamber changes to achieve oil absorption and oil pressure. Plunger pump has the advantages of high rated pressure, compact structure, high efficiency and convenient flow regulation. It is widely used in high pressure, large flow and flow needs to be adjusted occasions, such as hydraulic press, construction machinery and ships.

When the variable plunger pump works, its medium is limited in the closed cylinder block, and the plunger is its core component. The variable plunger pump mainly relies on the reciprocating movement of the plunger in the cylinder block for oil absorption and oil pressure. Compared with other hydraulic pumps, it has better pressure resistance, efficiency, and in the production process it has a larger transmission power and transmission range. At the same time, the variable piston pump also has the advantages of long service life, easy maintenance, etc., with the rapid development of China's industry, such products will become the main force in the future.


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