Big bag unloader
     DDJ series of big bag unloader is utilized to unpack the bags filled with granule materials such as plastic resin, carbon black, food additives and other drying materials in plastic, rubber and other industries. The sack will be lifted to the inlet of the unit by this system, the outlet of the sack will be taken apart manually, and the flow valve will be opened to discharge the materials from the big bag by gravity into the hopper, and in addition vibrating unit is installed to improve the granule material flowability.

Main structures:
Unloading station frames and support
Bulk bag hoist
Lifting cross
Supporting vibrating patting panel
Control valve
Sealing unit
Hopper：

Special gloves are designed to completely isolate the operator from the powder or gas；

Fluidizer, lump breaker and weighing units are available as options.
Outlet equipments:

 Rotary valve or by self-gravity, screw conveyor, vibrating conveyor, tube chain conveyor, rotary valves plus pneumatic conveyor, negative-pressure conveyor, etc.

KRD big bag unloading station could scale the weight by measuring total weight, and lost weight like following picture:

DDJ Series of Sack Unpacking Station has following virtues such as simple structure, reliable performance, low energy consumption , little material breakage and zero leakage, and is especially suitable for toxic, flammable, high erosive and heavy dusty working conditions.
According to the different discharging methods, big bag unloader can be categorized in three model series

DDJ1 model series: to lift the sack to the gantry of the unloader with fork-lift
DDJ2 model series: to lift the sack to the gantry of the unloader with hoist.
DDJ3 model series: to discharge both big bags and small bags as well.