called in at the weekend to find out if any members interested in the following project. Told quite possibly, so here goes.
I have a mill, a Moulin Astrie that is currently rented to a bakery in Berkshire but due to be installed in the Little Bread Pedlar bakery, Bermondsey Spa. Amongst other things this involves adding a mezzanine floor to the railway arch the bakery occupies from which to feed grain to mill and store grain, building a mill room around the mill to contain dust the mill is bound to give off. Space is very tight in the bakery creating numerous issues one of which is that it precludes lifting grain delivered in 1 tonne tote bag up to grain bin on mezzanine mechanically, via grain auger and/or bucket elevator. For this reason and others looking to complete a number of tasks pneumatically with negative air pressure i.e. suction and use of multiple cyclones both to collect material pre filter on vacuum power source and dump out different streams of material (grain, semolinas, bran, flour) where required.
I have two models, modern industrial mills which typically move things around pneumatically and deliver with cyclones and air lock rotary valves and carpentry shop dust extraction set ups that deliver suction to multiple locations selectively by use of a single suction power source and blast gates opening and closing going to cyclone on vacuum waste drum before dust extractor +air filters.
Essentially cannot dump out of cyclones into vacuum vessel(s), must create an air lock type effect to empty material but standard rotary valves for mills are both very expensive (+$4000) and much too big and clunky for our requirements and space (even DIY example). What I am looking at is creating an air lock chamber effect (similar to going for a space walk) by means of a pair of blast gates. I’ve got as far as a little manual test which so far favourable https://drive.google.com/file/d/1ky9zVzH6TKfOuO3arskNDiritcBJ_SA4/view. Next question - how to automate this? I hope this idea using Arduino/Servo Shield/Servos/blast gates to control a carpentry shop dust extraction setup gives a clue https://drive.google.com/file/d/18DQgZ6g2D3eb4r887EjaVJsosylbUOcf/view?usp=sharing
any takers? Like to help? Expect to be able to put some funds in but don’t want to become permanent member (I think). Is there such a thing as a temporary member?
Secretary Brockwell Bake Association
happy to consider the pneumatic piston driven blast gate solution already being investigated