Today, let's talk about the pressure loss of corn processing equipment pneumatic transmission. ...

Today, let's talk about the pressure loss of corn processing equipment pneumatic transmission. When the material stays in the suspension state for output in the pipeline, there always has crash or friction between the particles or the particle and the pipeline wall. This can make the particles loose some energy from the airflow. And this part of lost energy is expressed in the form of the loss of the airflow pressure. Usually, the larger the airflow velocity is, the more obvious the pressure loss will be. When the airflow velocity becomes small, then the particles will have stagnation phenomenon, which always strengthen the friction between the particles and the pipeline wall and the pressure loss will increase.
 

The mixture of the air and the solid material in the feeding tube of the corn processing equipment pneumatic transmission device is called air-solid two-phase flow in the hydromechanics. Air-solid two-phase flow pressure loss has obvious difference with pure air flow pressure loss.
 

For the material which has similar unit weight and the surface roughness, it has more pressure loss with wider grain size distribution. When the granular size is different, the velocity, crash times and accelerated speed is different. Smaller granules are much easier to be accelerated than the bigger ones. Therefore, small granules are easy to pass the big ones and crash. Granules crash can make some granules energy lose. Besides, big granules may cause vortex and make small granule drawn into it and form irregular granule movement to make the pressure loss increase.