Pneumatic Conveying Components
- Feed Systems
- Vacuum Pumps
- Vacuum Filter Elements
- Control Systems
Feed Systems for Pneumatic Conveying Systems
There are a few options available for introducing material into the pneumatic conveying system. The most common being a vacuum feed wand or a feed station hopper.
A Vacuum Feed Wand is our standard method of feeding the product into the pneumatic conveying system from a drum, Gaylord, or other container. With its twin tube design, the vacuum feed wand permits full adjustment of aspirating air at the feed point. The feed wand also permits “in/out” adjustment of the inner tube permitting total flexibility for feed rate control. The tip of the wand has a tube guard feature that prevents clogging from plastic liners.
As an alternative to a feed wand, IEDCO can provide a Feed Station Hopper of any size or configuration to introduce the product into the pneumatic conveying stream. This configuration allows for optimum material conveying and offers full adjustability. Further, it allows for additional system automation and reliable feed of material into the conveying system. For materials with difficult flow characteristics, Fluidization Cones can be provided. These cones prevent bridging by providing a finely distributed air stream that creates a cushion or film that reduces friction between materials and the pick-up components, enhancing particle movement.
At the heart of the pneumatic conveying system is the vacuum pump which creates the suction that moves the material from its source to the collection container. A compressed air driven, multijector vacuum pump is our standard. By using a compressed air-driven vacuum pump, the unit is inherently explosion-proof. Vacuum pumps driven by compressed air also have the advantage of being virtually maintenance-free, whisper quiet, and easy to control. Further, the pump only runs during the suction period and is at rest at other times saving energy.
In situations where compressed air is either not available or in limited supply, we can provide a motor driven vacuum pump and skid assembly. The rotary claw-type, positive displacement, dry vacuum pump acts as a dedicated vacuum source for the pneumatic conveying system.
Vacuum is produced by two non-contacting rotors in an oil-free pumping chamber. The dry, non-contacting design leads to a longer pump life with low maintenance.
Vacuum Filter Elements
When the material, together with the conveying air, enters the collection container, most particles are separated out, due to a drop in velocity. A small amount of fine particles follow the air to the filter(s) where they are collected and prevented from entering the vacuum pump.
The clean air continues through the vacuum pump and exhausted. The filter material used can be of a number of choices depending on specific applications, including stainless steel, plastic (polyethylene), and HEPA filters.