2CY-4.2 / 2.5 gear pump gear often appear noise, gear pump gear noise how to solve the problem, there are several possible aspects of gear pump gear noise: (1) rotary vane impact on the cylinder, the gear pump residual volume (2) the impact of the exhaust valve plate on the valve seat and support member; (3) echo and bubble burst sound inside the housing; (4) bearing noise; (5) a large number of Gas, oil shocks caused by the oil pan and other noise; (6) other. Such as transmission caused by noise, air-cooled gear pump gear fan noise. (7) Motor noise, which is a crucial factor. 1, when a large number of gas and oil impact oil repellant plate and other components issued by the noise. If parts are not rigid enough or not fastened, vibrations and bumps will cause the noise to increase. Therefore, the oil deflector should not only have sufficient rigidity and tightening, but also be used to avoid collision noise caused by vibrations and improve the oil deflation effect when it needs to be in contact with other parts (such as a fuel tank). 2, the impact of the valve seat and support pieces of the valve noise inhaled a large amount of gas, gear pump cycle oil, the greater the valve noise, the valve high jump, the valve area is large, the valve noise is also large, the valve Material also has some influence. Rubber valves should be noisy than steel or laminate as well. To this end, to control the amount of oil into the valve to close in time, to be strict. Attention to the selection of valves and structure.
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