The pixel art is well chosen and has a cute style. The sound effects fit the game nicely too.
Even with the control instructions, it took me a while to realize I had to push everything that wasn’t a sword off the conveyor belt.
Also, even when I marked the food green and the swords red, the belt still jammed quite often.
But the mechanic is fun — that’s where the overflow happens, and I really like how you came up with the idea of a factory worker needing a brush in this way.
So the concept is definitely original. Cool work! :)