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Domestic crushers for aluminium cans are relatively commonplace; the same for plastic bottles. But domestic crushers for glass bottles do not appear to be avaialble; large commercial units exist, but nothing that would suit a kitchen.
The pramaters are that the device should be (a) human-powered if
possible, (b) crush the glass safely and relaibly, (c) reduce the fragments to a size which yields an acceptable packing fraction, and (d) store the crushed glass safely until collection or for transport to the recycling point.
The device resembles a paper shredder, with a circular funnel on the top. Within, pairs of hardened toothed metal rollers of diminishing size, mouted alternately in pairs at right angles, taper down to a small aperture at the bottom. Looking into the top, it would look like the inside of a pyramid. There's a lid to stop fragnments coming out of the funnel, and a safety interlock to stop it operating if the lid is open.
It can be hand cranked, or electrically powered.
Operator_20Papier-M...odelling_20Shredder
[hippo, May 18 2008]
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Annotation:
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You should call it: The Glass Sand Witch.
I'd love one of these - big + |
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Wot we gonna shoot, if we keep ona crushin' thim? |
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I think the roller option is going to be a
problem - things will jam, or throw out
bits. A better option: a very solidly
build compartment that can take one or
two bottles, with a heavy plate that
closes down like a car compactor; the
plate can be driven by a hand crank
with a good ratio. Once the bottles are
crushed, the plate lifts up and a flap
opens to let the cullet slide out into a
collection box. |
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You've also got to figure out what to do
with the cullet; either you need a place
where you can take the box and empty
it (different from a regular bottle bank,
since the density of the cullet will be
much higher than that of intact bottles),
or the local authority has to be
equipped to collect it along with your
other rubbish. |
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The local authority collection was the favoured route. Recycling trucks coyuld have a special hopper to take the small-grain cullet produced by bottle crushers. |
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Local collectors could just provide depositors with fiberglass sacks for cullet. |
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In those areas where it applies, how would one recover the bottle deposit that was charged when these glass bottles were purchased? By weight or volume of the cullet? |
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Here's my take on it. There would be a difference in the monies refunded based on the state of the bottle (ie. a full 5 cent refund per whole bottle but 7 or 8 cents for cullet equavalent to the weight of one bottle). A modest profit to the person doing the returning would encourage home crushing. (Where I live this expense could be covered by the additional environmental levy that's charged on each bottle along with the deposit) |
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I know when I was a wee lad doing bottle drives for school and such, we used to have to separate the colours of the glass bottles we recycled. Is this still an issue? Would the operator of the home crusher be required to keep the colours segregated? That might throw a monkey into the wrench, at least as far as storage is concerned. |
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As long as I get my deposit back, I'll give this one a bun (no deposit, no levy). |
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//Yankees//
Yankee bottles. For an optional accessory: I'd like to be able to line up a bunch of bottles, and have a laser pistol that can "shoot" one at a time. A sensor would open a small trap door when the target is "hit", to be crushed. Another bottle can slide into place, until they're all gone. |
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I'd like to add a hot sump and mold that melts the shattered glass and turns it into small effigies of myself, if that would be ok? |
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[wagster] see link (OK it's a shredder, not a
glass recycler, but it's close enough). |
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Jesus, can I design it please? Just send the retainer in the mail. |
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This thing's gunna have to be built like a bomb to be reliable. Glass isn't the most crushable of crushables. Direct compaction I don't think will work very well at all - only to a point. So you're going to need a grizzly-type rolls crusher, some kind of ball mill, or maybe <just maybe> some kind of eccentric cone crusher <but I think your cone crusher will fail rather quickly>. It may end up easier to melt it directly. |
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I think you'd have to go with electrically-powered, or a flywheel thingie. |
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I think there still is an issue with coloured glass (a separate container, obviously) |
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// I think you'd have to go with electrically-powered, or a flywheel thingie. // |
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Ah, so there's all of the technical engineering out of the way, now all we need is a colour scheme. |
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..... and a catchy name .... |
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Is there a way to make fiberglass out of this stuff ? |
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... With sufficient tooling, yes. |
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For a given ammount of "sufficient tooling", in this case being a "hell of a lot of tooling". |
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How about a large, transparent plastic container the shape of an Erlenmeyer flask with a sling shot at the top? There’s a metal pyramid (or whatever the optimum shape for smashing is) target at the bottom. This would also be therapeutic I think - makes me want to smash something right now. |
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Are suggestions for new words allowed on the HB? If so I’d like to submit “smashisfaction.” |
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I think this could streamline glass recycling. As the cullet takes less space, the bins are more efficient, but godawful heavy, leading to more local glass recycloproduction and saving us all on the expense of fuel, shipping it all over hell's half acre. This must be supported by local salsa, beer and wine, of course, but these can be done nearly anywhere. Oh and gefilte fish, that always comes in glass, so you can see the floating goodness. |
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I'd go with a cement mixer type tumbler rather than a crusher. |
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And yes, I did read this at first as a "Kitten Crusher" |
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Ooooh, what a good idea ...... |
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After crushing the glass into suitable sized fragments, the glass could be melted into individual slabs, say using solar enegy to avoid green'house effect and the slabs used for making bicycle paths. |
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// glass could be melted into individual slabs, say using solar enegy // |
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A solar furnace with that capability, even for small quantities, will be quite large, and not practical in high lattitudes for most of the year. |
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Excellent idea. My mother used about 400 pounds of crushed glass to make the base for a patio beside my folks' home, so this would have been very helpful (especially for the sadsack shapu who had to cart the glass around in lined milk crates). |
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How about a pneumatic gun with an
electronic scale that adjusts the angle of
trajectory to lob the bottles into a
receptacle close to the house? |
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(You could also make a compost pile this
way. Make the mortar shell put of chitin
and implant it with wildflower seeds.) |
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At my work we have a crusher for flourescent light bulbs (those are the long ones, right?). It's smaller than a dishwasher. I see no reason why something similar could not be used in the home. |
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I don't think crushing is the right approach. A tumbler might be closer, but a conventional tumbler design might not reliably break the glass very well (a lot of domestic glass is surprisingly strong). A tumbler that dumped the glass onto a rapidly counter-rotating ceramic striker might work, though. |
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Throw some ball bearings in there. The glass will break. |
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you've got several different scenarios... do you want to break the glass to make more room in the recycle box ? or do you want to turn it into gravel for some reason. |
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