How Does A Bulk Bag Unloader Work?
So you may or may not know that a
bulk bag unloader or what is also known as a
bulk bag discharger is, it's a sealing device that inflates inside the bottom spout of the bulk bag and
seals it during the emptying process to eliminate the risk of dust
emissions. It also operates in conjunction with an automatic spout
stretching device to promote a smooth and cylindrical path for material
flow directly into a process vessel or integral conveyor. This patented
feature is particularly valuable when products with poor flow
characteristics are being handled.
It is important to ensure total discharge of product from the bulk bag
when invasive powder is being unloaded to prevent the escape of
material when the emptied bag is removed. For this reason, the
Model T9
has bag massagers at the corners of the bag as well as the base. A
patented pneumatic bag tensioner and an inner liner clamp prevent
creases from forming during unloading which can trap residual material.
Height adjustment for bags of different sizes is provided as well as a
lifting frame locator for correct alignment of the discharger with a
process vessel or other equipment where the material is being unloaded.
This feature enhances product containment.
 |
| Bag is placed on unloader by hoist or forklift. |
 |
Spout is pulled through the discharge dish with spout closure bars open.
|
 |
| With spout closure bars closed, bag is untied without release of contents. Bag spout located over inflation & tensioning device. |
 |
| Spout closure bars are opened to release product. |
 |
Pneumatic stretching device is actuated to provide a smooth path for product through spout.
|
 |
| Bag massagers at each corner assist material flow & ensure total emptying. |
 |
| Pneumatic bag tensioner retains bag shape. |
The worldwide acceptance of
bulk bags has brought about important
changes in
bulk materials handling practices to the point where even the
pharmaceutical industry are using them to replace rigid IBC's. This is
because bulk bags and their associated filling and discharge systems
offer proven advances in hygiene and high containment operation.
