The heart of the hydraulic system is the hydraulic gear pump, referred to as the oil pump. So in the hydraulic system, there must be a pump. The hydraulic gear pump is an energy conversion device, and its function is to convert mechanical energy into fluid energy. The pump is the power element in the hydraulic transmission system. It is driven by the prime mover. It takes the mechanical energy from the output power of the prime mover and converts it into the pressure energy of the fluid to provide pressure oil for the system. Then, in the place where work is required, the fluid pressure energy is converted into mechanical energy by the actuator and output to the gear pump.

Working principle and structure of gear oil pump

What role does a hydraulic gear pump play in a hydraulic system?

The hydraulic gear pump is the heart of the hydraulic system, referred to as the oil pump. In a hydraulic system, there must be at least one pump. A hydraulic gear pump is an energy conversion device whose function is to move the flow and convert mechanical energy into fluid energy. The pump is the power element in the hydraulic transmission system. It is driven by the prime mover. It takes the mechanical energy from the output power of the prime mover and converts it into the pressure energy of the fluid to provide pressure oil for the system. Then, in the place where work is required, the fluid pressure energy is converted into mechanical energy by the actuator and output to the gear pump.

The hydraulic gear pump is a kind of hydraulic pump widely used in hydraulic systems. It is generally made into the quantitative pump. According to different structures, gear pumps are divided into external gear pumps and internal gear pumps, and external gear pumps are the most widely used. The following external meshing gear pump is taken as an example to analyze the gear pump. Hydraulic gear pumps mainly include high-pressure quantitative gear pumps, high-pressure dual gear pumps, lubricating pumps, chemical pumps, bidirectional gear motors, gear pumps with pressure regulating valves, and gear pumps with lifting valves. The working principle and structure of the gear pump The working principle of the gear pump is shown in Figure 3-3. It is a separate three-piece structure. The three pieces refer to the pump cover 4, and 8 and the pump body 7. The pump body 7 is equipped with a pair of teeth with the same number. , the gear 6 whose width is close to the pump body and meshes with each other, the pair of gears form a sealed cavity with the two end covers and the pump body, and the sealed cavity is divided into two parts by the tooth tops and meshing lines of the gears, namely the oil suction cavity and the pump body. Pressure chamber. The two gears are respectively keyed on the driving shaft 12 and the driven shaft 15 supported by the needle bearing, and the driving shaft is driven to rotate by the motor.

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