磁力传动离心式植物油泵设计研究

Design Considerations of the Magnetic-driven Centrifugal Pump Used for Pumping Vegetable Oil

植物油厂用泵现场使用表明,大部分泵的失效是由于密封泄漏引起的。文中提出采用磁力传动泵来解决这一问题,并在已有磁力泵的基础上,做了结构上的改进。轴不旋转,内磁钢体与叶轮后盖板直接相连,减少了叶轮后盖板和内磁钢体前端面这两个端面与液体间的圆盘摩擦损失;泵轴不传递扭矩,为轴材料选择和加工提供了方便。

Most pumps used in vegetable oil plants often fail to work due to the leaking of shaft seal. The paper analyzes the causes of the failures and puts forward an innovative approach to solve the problems by using an improved magneticdriven pump. In this improved pump, the shaft is stationary, and the front of inner magneticsteel cylinder is connected directly to the back cover of the impeller, so that the friction loss of fluid between them reduces. Furthermore, since the shaft doesn't transmit torque, it brings convenience to material selection and manufacture of pump shaft.