Venturi tube Venturi tube referred to as the principle of the venturi effect when the wind off a surface in the vicinity of the obstacles on the leeward surface of the side port air pressure is relatively low, resulting in the adsorption and lead to air flow. Venturi principle is very simple, it is the air flow from coarse to fine, to accelerate the gas flow rate, the gas in the rear of the venturi tube exports to the formation of a "vacuum" District. It airflow to achieve the delivery of the powder. 
 Is the use of the radio absorption effect, such as dust collector, powder transport, coolers, flow meters, dryers, etc.. Shoot suction pump of the chemical industry is to this principle, so the material is mainly look at the application sites, a wide range of iron, aluminum, plastic, nylon.