Two-stage rotary vane vacuum pump can be widely used in refrigerators, air conditioners, light bulbs, fluorescent lamps, bottle bile production and electronics, metallurgy, medicine, chemical industry, oil filter, printing machinery, packaging machines and other industries. It can be used as a diffusion pump, Roots Pumps, molecular pumps and other fore pumps, for electronic equipment, medical equipment and other supporting research and experimental applications. Because the direct-coupled pump does not have the dust pollution of the belt friction, the volume is small, the weight is light, the material is saved, the function is perfected day by day, it is widely popularized and applied. Causes of Noise and Reducing Measures The noise of a rotary vane pump usually refers to the level of noise measured under extreme vacuum when the pump is stable in temperature. It includes the noise of the pump itself and the noise of the motor. For the user, it is also concerned with the noise during the start-up phase when the pump temperature is not stable and the noise running at different inlet pressures, and the noise when working in the open air town. therefore. Consider a variety of factors. There are several possible aspects of the pump's noise: (1) The impact of the rotary vane on the cylinder body, the sound of the pressure oil in the residual volume of the pump and the dead space of the exhaust gas; (2) Impact of the exhaust valve plate on the valve seat and the support member; (3) Echoes and bubble bursts in the cabinet; (4) Bearing noise; (5) The noise caused by a large number of gas and oil impact shields; (6) Others. Such as noise caused by the drive, fan noise of the air-cooled pump. (7) Motor noise, which is a crucial factor. More information in China vacuum pump trading network Screw Barrel For Sheet,Sheet Extrusion Screw Barrel Set,Screw Barrel For Sheet Metal,Screw Barrel For Sheet Lowes Zhoushan Qunying Plastic Machinery Manufactory , https://www.qunying-screw.com