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Analysis Of Malfunction Of Hydraulic Pump From The Abnormal Sound Of Hydraulic Pump

                 Hydraulic pump is the power source of hydraulic system. The basic conditions of the hydraulic pump are: With variable sealing volume, coordinated oil-matching mechanism, and high and low pressure cavities to isolate each other. The main performance parameters of hydraulic pump and hydraulic motor are: displacement, flow, pressure, the power and efficiency, the displacement is the geometrical parameter, and the flow rate is the product of the displacement and rotational speed; the actual working pressure depends on the external load, the hydraulic power is the output flow of the pump and the product of the working pressure, the volumetric efficiency and the mechanical efficiency reflect the volume loss and the mechanical loss of Hydraulic pump and hydraulic motor according to the different structure form, mainly divides into the gear type, the vane type, the plunger type three main categories, must master each kind of pump, the motor working principle, the displacement and the flow computation method, understood its structure characteristic.Hydraulic Pump

                 1. The noise of the hydraulic pump or motor (1) is one of the main reasons causing the high noise of the hydraulic pump. When the oil is mixed with air, it is easy to form cavitation phenomenon in the high-pressure zone, and it is transmitted in the form of pressure wave, which causes the oil oscillation and the system produces cavitation noise. The main reasons are as follows: 1. Hydraulic pump oil filter, inlet pipe blockage or oil viscosity too high, can cause the pump into the mouth of the vacuum through high, so that air infiltration. 2. The hydraulic pump, the pilot pump shaft end oil seal damage, or enters the tubing seal bad, causes the air to enter. 3. Tank oil level too low, so that the hydraulic pump into the tubing directly suction air.Hydraulic Pump

                When the hydraulic pump is in high noise, the above parts should be inspected first and the problem should be dealt with in time. Plunger pump is the most perfect performance, pressure and efficiency of the hydraulic pump; High performance vane pump with small pulsation, low noise and good; the most characteristic of the gear pump is anti-pollution, which can be used in the environment with bad working conditions. Hydraulic motor is one of the important actuators in the hydraulic system, in principle, the hydraulic motor is the reverse working condition of the hydraulic pump. It is important to understand the structural features and applications of low-speed large torque motors (Crank-link motors, static balancing motors, and multi acting internal curve motors).Hydraulic Pump