Is there any invented machine like a potato rumbler for washing and peeling beans for large scale moi moi and akara makng?

Hand washing of beans for moi moi strenuously time taking and neck cracking.How do nigerians do it.

I remember seeing some kind of moi moi mix in the supermarket. I forget the name though but all you have to do (I think) is add some water to it and boil for moi moi. In fact my mom did buy that one time but it turned out to be not as great as the one made the hard way.