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Venturi systems use the principles of fluid dynamics to create both negative and positive conveying pressures. A negative pressure is created upstream of the unit and a positive pressure is created downstream. Such systems are therefore very effective in sucking material from its source and supplying it to the destination under pressure. These systems convey materials using lean phase technology and utilise either a cyclone of filter unit at the destination to separate conveying air from conveyed product.
The venturi system works by creating a constriction within the pipe (classically a hourglass shape) that varies the flow characteristics of the gas travelling through the tube. As the velocity in the throat is increased a consequential loss in pressure occurs. This drop in pressure therefore creates a vacuum effect which can be used to draw material into the conveying pipeline. On the downstream side of the venturi unit the material is conveyed using the positive pressure air flow.
C J Waterhouse company are a UK distributor for Kongskilde, a leading supplier of venturi systems around the world. Their extensive experience within material conveying using fluid dynamic principles has led them to provide a unique system which vastly reduces air consumption and reduced end of line filtration requirements due to their air return system. This system removes a portion of the air that is supplied to the venturi to create the vacuum and returns it back to the blower unit to be recycled
For more information on Venturi Conveying Systems In Nottinghamshire talk to C J Waterhouse Co Ltd