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Re: Add Motor to Grape Crusher
From: ben.mihailescu@gmail.com (Ben)
On Jul 2, 6:57 am, fishziblu <fishzi...@gmail.com> wrote:
Hi,
A motorised crusher does not need speed, but would do with some
torque.
I am assuming that your manual grape crusher consists of two square
toothed
rollers, within a hopper.
A 300W or 0.75hp motor would do. A pulley system/ or gear will step
down
the speed and give you enough torque. The pulley system has an
advantage
of slip in case the system breaks to halt, therefore protecting both
the crusher and
the motor. Make sure you have a handy pushbutton switch nearby, to
stop it immediately.
(or a load protector which would do that automatically).
Such a motor would rotate at a no-load speed of about 1500-2000rpm,
which is way too much.
You would need to gear it down. Aim for 60-90 rpm.
Since this is a wet environment, insulate/cover all your electrics and
connections.
Recommendation for IP67 switch.
fishziblu
Thanks! That's the speed (rpm) I had in mind (empirically I counted 70
rpm manually). The one different piece of info about my crusher is
that it uses a Singles Chat">single large drum with spikes (scary looking thing).
Would that make a difference?
Many thanks, Ben
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