JKF-159C系列采用真空吸入物料的方式给料。包装袋放置在密闭的真空仓内，物料通过负压吸引作用进入包装袋内，同时物料中的气体通过包装袋的气孔排出。当填充到包装袋内的物料重量到达预设的重量值时，真空泵停止运行，同时真空仓门打开，人工取下包装好的包装袋，即完成单袋包装。包装过程无粉尘外溢，有效降低对环境的污染。包装过程能实现高压缩比填充物料，使包装成品袋外形充实,缩小包装袋尺寸，包装效果尤为突出。 

JKF-159C valve-port vacuum powder dosing packaging machine It consists of vacuum pump, negative pressure tank, vacuum chamber, and bag filter. The medium is sucked into the packaging bag in the vacuum chamber using the pressure difference between the vacuum chamber and the feeding device to realize that the powder is packaged under an airtight and vacuum condition. It can be used to solve the problem of pollution packaging the powder with large volume and small specific gravity and may monitor and control the negative pressure for the vacuum chamber withstanding a negative pressure of 90 Kpa. The system integrates with vacuum measurement, PLC, HMI, and full automatic operation and features high packaging speed, accurate measurement, and dust free etc. It is mainly used for SIO, in gas phase method, SIO, in settling method, all kinds of white carbon black, and all kinds of powder with large volume and small specific gravity and is widely used in the powder production and re-packaging.