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May 18, 2022 View:

From which aspects to eliminate the vibration phenomenon of the lobe pump

What is the best way to eliminate the vibration of lobe pumps? lobe pump has long service life, high mechanical efficiency, easy disassembly and maintenance, so there is almost no wear of parts in the operation of the lobe pump (except mechanical seal), no friction between rotor and rotor, and no wear parts. However, the lobe lobe pump often generates vibration in the working process, so how to eliminate these vibrations? 1, from the design and manufacturing link to eliminate vibration 1, the design of the shaft, in the design, should make the drive shaft inherent frequency avoid the motor rotor angular frequency. Improve the manufacturing quality of the shaft, to prevent the quality of eccentricity and excessive tolerance of shape. 2, the choice of sliding bearings, the use of sliding bearings without lubrication. 3, the use of stress relief system, for the pump conveying hot water, the design, the pump body deformation should be used to release the structural stress caused by the connection between. Second, from the installation and maintenance process to eliminate vibration 1, before installation to check the pump shaft, motor shaft, drive shaft there is no bending deformation, quality eccentric situation. 2, lobe pump bolt spacing is good, elastic column pin and elastic collar combination can not be too tight, coupling bore and shaft fit is too loose, if too loose, the use of methods such as spraying to reduce the coupling 3, whether the clearance value meets the standard, whether the lubrication is good everywhere, improve the pump shaft pumping tile overhaul process level, strictly follow the first scraping tile, after grinding, in the scraping tile bad procedure, to ensure that the contact area of the shaft tile and shaft strength to reach the specified standard. 4, timely discovery of the fatigue of the vibration support parts, to prevent the fatigue because of strength and stiffness reduction caused by the inherent frequency decline. 5, to ensure that the motor bearing clearance is appropriate, regular inspection, easy to wear parts. Third, eliminate the vibration caused by improper selection and operation of the pump. Two pumps in parallel should ensure the same pump performance, in the selection of lobe pump, the performance curve should be slowly descending type is good, can not have a hump. To prevent excessive pump amplitude, you can also measure and analyze the vibration condition to ensure the working parameters of the pump.