The "closed system" design features a 180 degree access door for connecting and disconnecting the bulk bag. A positive dust-tight connection is made by fitting a pneumatic cord around the pipe and pressurizing it, trapping the bag discharge spout against the pipe. The feature allows the operator to remove the discharge tie and begin product flow without exposure to the product.
Bulk bags are safely supported in the framework by a full-sized vibratory pan, driven by compressed air. The unqiue "silent" vibrator is fully adjustable to deliver the correct level of vibration to induce product flow.
Pneumatically operated bag squeezers are available for products with difficult flow characteristics to dislodge material and prevent bridging. The squeezers can be programmed to operate in sequence with the vibratory pan or operator controlled to ensure complete bag emptying. An optional flow control valve is available to adjust or stop the material flow so partially used bags can be changed out.
For bulk bags fitted with a liner, a spring loaded bag tensioner is used to secure the liner to the top of the unloader frame during the unloading cycle to prevent washout.

Optional Features

  • Hoist and trolley for unloading
  • Bag squeezers to enhance product flow
  • Stainless steel construction
  • Weigh-up or loss-in weight watching system
  • Explosion-proof controls
  • Shut-off valve for partial bags
  • Low-profile unloaders for low overhead installation
  • Integrated hopper

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Copyright 2001 Whirl-Air-Flow Corporation