It is estimated that many people are not very clear about the displacement and flow rate of hydraulic pumps. Benzhengyun Hydraulic Editor will analyze the displacement and flow rate of hydraulic pumps with everyone and take a look together.

1. Displacement of hydraulic pump:

It refers to the volume of oil discharged by the pump shaft after one revolution, indicated by V, with a unit of mL/r. The displacement of a hydraulic pump depends on the geometric scale of the sealing chamber of the hydraulic pump. Different pumps have different displacement due to different structural parameters.

2. The displacement is determined by the pump itself, the quantitative pump displacement remains unchanged, and the flow rate is related to the speed of the driving pump; Variable displacement pumps can adjust displacement. The motor speed of the flow driven pump is related, and the pressure is related to the driving load. The larger the load, the greater the pressure (within an additional range). As the flow rate increases, the speed of the oil cylinder movement will increase. Dalan hydraulic oil pump

3. Hydraulic pump flow rate:

During the oil discharge process of a hydraulic pump, the instantaneous flow rate is uneven and can change at any time. However, during the continuous rotation of the hydraulic pump, the instantaneous flow rate in each rotation changes repeatedly according to the same pattern, which is called the flow pulsation of the hydraulic pump.

4. The flow pulsation of hydraulic pumps can cause pressure pulsation, leading to vibration and noise in components such as pipelines and valves. Moreover, due to flow pulsation, the output flow of the pump is unstable, which affects the stability of the working components, especially for the hydraulic transmission system of precision machine tools.

Generally, the flow pulsation of screw pumps is very small, followed by blade pumps, and the flow pulsation of gear pumps and plunger pumps is relatively large.

Article source: Jiangmen Hydraulic Component Manufacturer www.jh-hydraulic.com