The droid, an R-H029 SIFTER DROID is an industrial droid used to suck up sand or any other dust. He is closer to the peaceful robotic cow than to the combat robot. He can be seen in the Star Wars VII: The Force Awakens movies based on the Resistance on D'Qar. He can also be seen in Solo: A Star Wars Story on Kessel in a coaxium mine. There is little information about this droid and its use in the Star Wars universe.
Based on Luke Fisher concept art and movie screenshots
https://www.artstation.com/artwork/o862J