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Importance of preventing low-pressure gear oil pump air from entering and cavitation

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Prevent air from entering. a. Fill enough oil, and the oil level of the fuel tank must always be no lower than the oil line. Especially for the hydraulic system equipped with large hydraulic cylinders, except for the first time when sufficient oil is added, when the hydraulic cylinder is started, the oil enters the hydraulic After the cylinder, the oil level will be significantly reduced. The gear pump even exposes the oil filter to the oil level. At this time, you need to fill the oil tank to the oil level. b. Periodically remove dirt from the oil filter screen or element. If the capacity of the oil filter is not enough or the texture is too fine, the appropriate filter should be replaced. C. The inlet and return pipes should be separated as far as possible to prevent air from entering and generating noise. d. 5MPa。 The oil return pipe should be inserted below the minimum oil level of the fuel tank (about lOcm), the oil return pipe must have a certain back pressure, generally 0. 3 ~ 0. 5MPa. e. Pay attention to the leakage of various hydraulic components, often the place where the oil leaks is also the air intake. {. Tighten all pipe joints, especially the rigid interface sleeve, pay attention to the condition of the sealing surface. g. Take measures to improve the antifoaming and defoaming properties of the oil itself, and add additives such as antifoaming agents if necessary to facilitate the suspension and defoaming of bubbles in the oil. h. Add an exhaust device to the hydraulic cylinder without an exhaust device or loosen the pipe joint at the highest part of the device to exhaust.
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