How to Show the Low Noise of YHCB Series Gear Pumps?
2025-07-23 16:13:10
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When multiple gear pumps need to work in residential areas, city centers or oil plants and other public places, if the noise is once on the high side, it is easy to become the focus of noise complaints, which will not only cause dissatisfaction of the residents, but also even shut down the production in serious cases. During the operation of gear pumps, the general causes of noise include the impact of gear meshing, trapped oil pulsation, and dynamic imbalance and other factors, these factors can make the noise increase of 4-8dB. YHCB series gear pump is a new generation of low-noise and high-efficiency circular-arc gear pumps, designed to transport gasoline, kerosene, diesel oil and mechanical lubricating oil and other media with a viscosity of 5-1500 cst and a temperature of below 80°C. This pump has low noise as one of its core selling points, so let's see how the pump reduces noise in production.
Generally speaking, traditional involute gear pumps have oil trapping phenomenon during gear meshing, which generates cyclic pulsation of 80-200Hz and is the main factor of noise and vibration in production. However, YHCB gear pump adopts continuous contact circular arc tooth shape, which theoretically can completely eliminate the phenomenon of trapped oil, and in fact its pulsation will be greatly reduced, so the noise of the pump is much lower. At the same time, when the speed of the pump is 960r/min, the flow rate can reach 60-80m³/h, which is 20-30% lower than the speed of the same flow rate involute gear pumps, in other words, the pump directly weakened the source of mechanical and hydrodynamic noise. Moreover, the pump's gears are nitrided and ground so that the dynamic balance rating can be of high quality, which in turn reduces the shock generated when the gears mesh.
If the production environment is particularly sensitive to noise, first of all, when installing the machine, install rubber damping pads between the pump and the base, which can reduce the noise by 6-8dB. Secondly, can be installed in the inlet pipe metal hose or equipped with muffler at the outlet, can reduce the fluid pulsation noise 5-7dB. at the same time, whenever the gear end face of YHCB series gear oil pumps wear to a certain extent, the noise of the machine operation will rise to 2-4dB, so it is necessary to regularly check the wear of the gear end face. YHCB series arc gear pumps are designed with a combination of double arc and sinusoidal curves, low speed and dynamic balancing to effectively control the noise in production. The low-noise feature not only realizes quiet production in public places such as oil depots, residential areas and factories, but also meets the standard of sound environment in production.
