正压稀相气力输送系统是采用罗茨风机或者罗茨空压泵作为动力源。利用空气动能作为输送介质，物料以比较高的速度并以分散悬浮的状态在管道中输送。输送的压力一般根据工况条件不同可在几千帕到几百千帕范围内调整。　　利用气体动压，物料以较高速度在输送管道中前进(8m/s-25m/s )，输送压力沿输送管道逐渐降低;　　连续输送，输送流态、输送压力与输送速度、料气比基本保持稳定;　　在一定情况下，输送距离较正压密相短、较负压稀相长;　　输送过程中，罗茨鼓风机的出口空气温度较高;　　为了防止串气，系统需要配备密闭性较好的旋转供料阀/旋转阀/星型卸料阀/关风机卸料器。【电话/微信咨询：耿先森18706122402】　　正压输送旋转阀/风送式旋转阀主要用于化工、食品、药材、锂电、塑料原料输送。　　针对物料粘接，风力直吹转子清理物料。　　主要材质：不锈钢304-316、钛合金、铝合金、各种合金。       《扫二维码-添加 耿先森 微信-咨询链驱动正压旋转阀》　　The positive pressure dilute phase pneumatic conveying system uses Roots blower or Roots air pump as the power source. Using air kinetic energy as a conveying medium, materials are transported in pipelines at relatively high speeds and in a dispersed and suspended state. The conveying pressure can generally be adjusted within the range of several thousand pascals to several hundred kilopascals according to different working conditions.　　Using gas dynamic pressure, the material advances at a high speed in the conveying pipeline (8m/s-25m/s), and the conveying pressure gradually decreases along the conveying pipeline;　　Continuous conveying, the conveying flow state, conveying pressure and speed, and material gas ratio remain basically stable;　　In certain circumstances, the conveying distance is shorter than that of the positive pressure dense phase and longer than that of the negative pressure dilute phase;　　During the conveying process, the outlet air temperature of the Roots blower is relatively high;　　In order to prevent air leakage, the system needs to be equipped with a well sealed rotary feeding valve/rotary valve/star shaped discharge valve/shut-off fan discharge device.　　Positive pressure conveying rotary valve/pneumatic rotary valve is mainly used for conveying chemical, food, medicinal materials, lithium batteries, and plastic raw materials.