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。

　　正压气力输送利用气体动压，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。

　　卸料阀/星型卸料器/旋转阀常用在气力输出系统中。对于压力输出系统或负压输出系统，星型卸料器可以均匀、连续地向输料管供料，以保证气力输出管内的气、固态比较稳定，从而使气力输送能正常工作，同时又能将卸料器的上、下部气压隔断而起到锁气作用。因此，星型卸料器是气力输送系统中常用的重要部件。【电话/微信咨询：陈经理18068546632】

　　正压风送卸料阀针对物料粘接，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。【电话/微信咨询：陈经理18068546632】

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　　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.

　　Positive pressure pneumatic conveying utilizes gas dynamic pressure to move materials at a high speed (8m/s-25m/s) in the conveying pipeline, and the conveying pressure gradually decreases along the conveying pipeline.

　　Unloading valves/star shaped unloaders/rotary valves are commonly used in pneumatic output systems. For pressure output systems or negative pressure output systems, the star shaped unloader can uniformly and continuously feed the conveying pipe to ensure that the gas and solid in the pneumatic output pipe are relatively stable, so that the pneumatic conveying can work normally, and at the same time, it can also block the upper and lower air pressure of the unloader and play a role in air lock. Therefore, the star shaped unloader is an important component commonly used in pneumatic conveying systems.