Screw vacuum pumps, vacuum pumps, Li Zhong Hardware

Change the speed of the vacuum pump approach: First, change the power frequency of the screw vacuum pump, which uses the drive. It uses the frequency of benefits can provide a closed-loop control to a vacuum pump vacuum, but under heavy load likely to cause loss of torque. Second, the change in transmission ratio gearbox. Change pump gearbox transmission ratio is a very economical way, but it can only provide a single uncontrollable speed. Dry vacuum pump has a different design specifications, they each have their own characteristics and advantages and disadvantages. Main vacuum pump selection and calculation S = 2.303V / tLog (P1 / P2) where: S is the vacuum pump rate (L / s) V is a vacuum chamber volume (L) t is the time required to meet the requirements of vacuum degree (s) P1 the initial degree of vacuum (Torr) P2 to require a degree of vacuum (Torr), for example: V = 500L t = 30s P1 = 760Torr P2 = 50Torr then: S = 2.303V / t Log (P1 / P2) = 2.303x500 / 30xLog (760 / 50) = 35.4L / s on the type of course is only a theoretical calculation of the main vacuum pump, as well as a number of variable factors are not taken into account, such as pipeline flow resistance, leakage, filter flow resistance, has been pumping gas temperature. Actually a safety factor should be taken into account. Currently the most widely used industrial water ring vacuum pumps and rotary vane vacuum pump. Screw vacuum pumps, vacuum pumps, Li Zhong hardware provided by the Dongguan City, Daling Shan Li Zhong-processing hardware store. Dongguan City, Daling Shan Li Zhong-processing hardware store (www.hongxiangzkb.com) strong, credible, Guangdong Dongguan pump industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving Lee Chung innovative ideas will lead into the brilliant hardware and you work for a better future!