from the image for ***sækkeudslag*** in the following Danish source:

Silo assontoft tørresilo, Gode tilbud og priser LIGE HER
www.snup.nu › Resultater › Silo › Assontoft
Tørresilo med sækkeudslag til småsække og stor original varm/kold luftsblæser kan også anvendes som opbevaring til f.eks. Træpiller og snild udtømning i trillebør eller lignende af sækkeudslag.

my guess is that this image relates to images on the internet for bag dischargers / bag unloaders / bag emptiers

attempted translation:

a bag is taken with the vaccuum lifter and then placed up on the (bag discharger / bag unloader)

the powder (from the bag) is emptied into the bag discharger / bag unloader



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Note added at 4 hrs (2015-01-29 14:12:49 GMT)
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sorry, small correction

there are no images for bag emptiers

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Note added at 5 hrs (2015-01-29 14:33:54 GMT)
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coming back to the image in the Danish source, this is a ***drying hopper with a bag discharger / bag unloader for small bags***

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Note added at 5 hrs (2015-01-29 14:35:29 GMT)
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sorry again

this is a ***drying hopper with a hopper bag discharger / bag unloader for small bags***

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Note added at 5 hrs (2015-01-29 14:40:05 GMT)
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***udslag*** is also translated as a ***drain*** or a ***fitting*** in KudoZ:

udslag > floor drain or bottom drain (or bottom fitting or floor ...
www.proz.com › KudoZ home › Danish to English › Other
Apr 8, 2009 - (KudoZ) Danish to English translation of udslag: floor drain or bottom drain (or bottom fitting or floor fitting) [Other].

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Note added at 9 hrs (2015-01-29 18:23:08 GMT)
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attempt at visualizing the process in your context:

bags filled with powder are taken with the vaccuum lifter and then lifted or placed up on the top of the inverted cone funnel bag discharger or bag unloader

the powder from the bags is emptied into this inverted cone funnel bag discharger / bag unloader until it fills up and then is discharged or unloaded through its discharge spout with closure at the bottom into something not specified in your above context