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Vacuum Conveying Systems
A basic vacuum conveying system uses a metering device at the inlet, a pipeline, receiver and exhauster.
As there is no positive pressure at the inlet it is not necessary to fit a rotary valve, so large particles can be fed into the vacuum conveyor system without damage. Some products will be able to feed into the system using a double walled lance inserted into the bulk of the material. Some products which don’t feed freely will need a controlled feed from an upstream process.
Vacuum Conveying System Overview
- The receiver needs to be sealed and vacuum tight to enable the system to operate effectively.
- Another possible benefit results from the vacuum conveying system being under negative pressure; potential leakage of toxic or hazardous products is prevented.
- The conveying rate for a vacuum conveyor is limited by the negative pressure that can be created by different exhausters.
- We would typically not design a vacuum conveyor system to operate in excess of -400mbarg.
- Vacuum conveying systems are generally better suited to lower throughputs and conveying distances when compared with pressure conveying system.
- Frequently used in ‘hopper loading’ applications often known as ‘suck and dump’.
- Air and products will generally have higher velocities than pressure conveying.
Some examples of Vacuum Conveyor Systems
Related Services
Pressure Conveying
Conventional lean phase pneumatic conveying systems employing a blower, metering valve, conveying pipeline, receiver and vent filter.
Closed Loop Conveying
Our own Closed Loop Conveying (CLC) System is the answer to many customers’ problems.
Filterless Closed Loop Conveying
Closed loop (usually vacuum) conveying, incorporating a cyclone separating receiver without a filter.
Velocity Control Conveying
An additional feature to a pressure conveying line.
Miscellaneous Applications
At Aptech, we have a wide range of miscellaneous conveying applications, such as Powder Pumping.