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Bulk Bag Unloader

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The Bulk Bag Unloader provides a safe, dust-free and convenient way to handle and discharge bulk bags. It is available in eight models to accommodate all styles of bulk bags and bulk bag discharger requirements. These range from a receiving hopper and frame for customer supported bulk bags to a complete bulk bag unloading station. Available options include an integral bulk bag hoist and trolley, manual or pneumatic flow shutoff valve, vibratory agitation to aid material flow and/or a bag massager for more difficult materials, conveyor, load cells and controls for a complete “turn-key” system.

Vibra Screw Bulk Bag Unloaders make handling of bulk bags finally practical by:

  • Providing an easy and safe method to lift, support and discharge bulk bags.
  • Eliminating dust and spillage associated with other methods of bulk bag handling.
  • Permitting controlled, regulated discharge with a variety of feed devices and weight control options.

Features Unique to the Vibra Screw Bulk Bag Unloader

  • Bulk Bag Support Hopper – Designed to seat and seal the bulk bag before it is opened. Operator is never required to reach beneath a suspended bulk bag to open the outlet.
  • Dust Control – Standard two-point dust collection. A bulk bag perimeter collection ring traps all dust escaping at bulk bag corners and seams. An outlet system collects dust during bag opening.
  • No-Spill Design – Unlike other “open frame”, paddle support designs, Vibra Screw’s collection hopper protects against catastrophic bulk bag spillage due to bulk bag failure, puncture or premature outlet opening.
  • Vibration Discharge System – Incorporating the same design principles as Vibra Screw Bin Activators, this assures complete emptying of the bulk bag contents without need for repositioning or adjusting the bulk bag.
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18” x 20” access door with quick clamps. Two door access is also available as an option

Bag Spout Access Door

18” x 20” access door with quick clamps. Two door access is also available as an option
Fully enclosed Bulk Bag Support Frame (optional)

Support Frame Enclosure

Fully enclosed Bulk Bag Support Frame (optional)
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Bulk Bag Massaging paddles (bar type) pneumatically operated, using two air cylinders. Provides a means to condition the bag to enhance material flow out of the bag. Air operated , air set, filter regulator, solenoid valves operated by two timers for on/off operation.

Massaging Paddles

Bulk Bag Massaging paddles (bar type) pneumatically operated, using two air cylinders. Provides a means to condition the bag to enhance material flow out of the bag. Air operated , air set, filter regulator, solenoid valves operated by two timers for on/off operation.
Designed for one way bags that have no outlet. Used only with vibrated hopper bottom to assure maximum material flow.

Bag Slitter

Designed for one way bags that have no outlet. Used only with vibrated hopper bottom to assure maximum material flow.
Live Bottom Bin can be mounted integral to the Bulk Bag Unloader frame in sizes from 5 to 100 cubic ft capacity. Assures down stream equipment will not run out of material during bag change over.

Material Surge Bins

Live Bottom Bin can be mounted integral to the Bulk Bag Unloader frame in sizes from 5 to 100 cubic ft capacity. Assures down stream equipment will not run out of material during bag change over.
Paper Bag Dump station mounted under the outlet of a Bulk Bag Unloader allows minor ingredient to be added to the same flow stream as the material from the Bulk Bag.

Paper Bag Dump Station

Paper Bag Dump station mounted under the outlet of a Bulk Bag Unloader allows minor ingredient to be added to the same flow stream as the material from the Bulk Bag.
Pneumatic Bulk Bag outlet spout closer. This option provides a means to seal the bag off and re-tie or to simply stop flow of material to the process. The valve is actuated with two pneumatic cylinders that move the v-formed plates toward each other. This bunches and pinches the bag off at the bag outlet spout. The pinch plates are made from stainless steel. This valve is operated automatically or manually as necessary for the specific application. Requires air set with lubricator, two way solenoid valve by customer.

Bag Spout Closer Pinch Valve

Pneumatic Bulk Bag outlet spout closer. This option provides a means to seal the bag off and re-tie or to simply stop flow of material to the process. The valve is actuated with two pneumatic cylinders that move the v-formed plates toward each other. This bunches and pinches the bag off at the bag outlet spout. The pinch plates are made from stainless steel. This valve is operated automatically or manually as necessary for the specific application. Requires air set with lubricator, two way solenoid valve by customer.

Schematics

Bulk Bag Unloaders
17820-SD Model I-HD PDF DWG
17821-SD Model I-V-HD PDF DWG
17822-SD Model II-HD with hoist PDF DWG
17851 Model II-HD with hoist & FlexiFeeder (models 50-400) PDF DWG
17823-SD Model II-HD with fork lift adapter (without hoist) PDF DWG
17848 Model II-HD with fork lift adapter & FlexiFeeder (models 50-400) PDF DWG
17824-SD Model II-V-HD with hoist PDF DWG
17849 Model II-V-HD with hoist & FlexiFeeder (models 50-400) PDF DWG
17825-SD Model II-V-HD with fork lift adapter (without hoist) PDF DWG
17850 Model II-V-HD with fork lift adapter & FlexiFeeder (models 50-400) PDF DWG
S103 Bag Unloader – dust pick up ring PDF DWG
S107 Bag Unloader – bag dump station PDF DWG
S114 Bag Unloader – bag slitter PDF DWG
S115 Bag Unloader – liner tensioner PDF DWG
S116 Bag Unloader – iris closure valve PDF DWG
S118 Bag Unloader – weigh batching PDF DWG
S119 Bag Unloader – pneumatic bag closure valve PDF DWG
S128 Bag Unloader – bag spout seal PDF DWG
S146 Variable Rate Bulk Bag Unloader PDF n/a
S159 Bulk Bag Unloader – flow stimulator paddle type PDF DWG
17914 Bag Unloader – festoon system assembly PDF DWG

Equipment Test Video


Bulk Bag Unloader One Way Bag Splitter


Bulk Bag Unloader Dust Collection & Operator Bag Placement


Bulk Bag Unloader

Pneumatic Knife Gate Valve Operation

The Vibra Screw knife gate valve is available as a convenient way to stop the flow of material from a Bulk Bag. This valve provides a firm, precise and easy shut off for tying off of partial bags should the need arise to change material at any time. It is pneumatically operated and interlocked with the glove box door to assure safe and secure operation. It can be controlled manually by a locally mounted hand lever, or solenoid driven by remote controls while still maintaining the glove box door safety interlock. Material construction options include carbon or stainless steel.


Vibra Screw Bulk Bag Unloader /
FlexiFeeder Soda Ash Test

 

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