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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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Vacuum cleaner principles
I am going to go out and start vacuuming pecans this coming week. I guess I
have about six 55 gallon barrels worth lined up. I have a 2.2hp 2.5" shop vac now, but want to make something that will do more than one thing at a time. Right now, this picks up everything, and I have one more step to separate the hulls. I'd like to leave them on scene, unless the homeowner wants them cleaned up, for a fee. Mainly, I only want to transport whole nuts, and as little hulls and other trash as possible. For this, I have figured out some screens and filters. I want to vacuum up the nuts in their hulls, plus the hulls, and have only the pecans make it to the bed of the truck, and into a box. How would I rig up a vacuum so that the hard pieces do not go through the vanes of the vacuum? I want to keep this very simple, so that I only have a vacuum hose, and a holding box, and the ability to keep all other trash out. Anyone know of any diagrams or sites where this is addressed? I got ahead of myself. I put out an ad to see if anyone wanted any pecans, and yes, they do. A LOT of people. But I had to go to Vegas for a few days and do some real estate stuff, and therefore ............. So, I was thinking today as I drove, and now want to cobble together some things until I get a machine running smoothly. I kept coming up with "stuff", then kept remembering that I really want to keep it simple, and if I can find a way to do this through diverting simple vacuum hoses, that would do the trick, as far as collecting goes. Help appreciated. Steve |
#2
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Vacuum cleaner principles
On 2/22/2013 9:12 PM, Steve B wrote:
I am going to go out and start vacuuming pecans this coming week. I guess I have about six 55 gallon barrels worth lined up. I have a 2.2hp 2.5" shop vac now, but want to make something that will do more than one thing at a time. Right now, this picks up everything, and I have one more step to separate the hulls. I'd like to leave them on scene, unless the homeowner wants them cleaned up, for a fee. Mainly, I only want to transport whole nuts, and as little hulls and other trash as possible. For this, I have figured out some screens and filters. I want to vacuum up the nuts in their hulls, plus the hulls, and have only the pecans make it to the bed of the truck, and into a box. How would I rig up a vacuum so that the hard pieces do not go through the vanes of the vacuum? I want to keep this very simple, so that I only have a vacuum hose, and a holding box, and the ability to keep all other trash out. Anyone know of any diagrams or sites where this is addressed? I got ahead of myself. I put out an ad to see if anyone wanted any pecans, and yes, they do. A LOT of people. But I had to go to Vegas for a few days and do some real estate stuff, and therefore ............. So, I was thinking today as I drove, and now want to cobble together some things until I get a machine running smoothly. I kept coming up with "stuff", then kept remembering that I really want to keep it simple, and if I can find a way to do this through diverting simple vacuum hoses, that would do the trick, as far as collecting goes. Help appreciated. Steve This ought to be an interesting project. Wish I had a clue how to get started... Obviously a grill or screen to protect the vacuum mechanism. But how to keep THAT from clogging? A feed ramp? Maybe of increasing angle? I'm kind of wondering of a second vacuum of controlled suckage acting as a cross flow might be able to pick off the partial hulls? Richard |
#3
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Vacuum cleaner principles
On Fri, 22 Feb 2013 20:12:30 -0700, "Steve B"
wrote: I am going to go out and start vacuuming pecans this coming week. I guess I have about six 55 gallon barrels worth lined up. I have a 2.2hp 2.5" shop vac now, but want to make something that will do more than one thing at a time. Right now, this picks up everything, and I have one more step to separate the hulls. I'd like to leave them on scene, unless the homeowner wants them cleaned up, for a fee. Mainly, I only want to transport whole nuts, and as little hulls and other trash as possible. For this, I have figured out some screens and filters. I want to vacuum up the nuts in their hulls, plus the hulls, and have only the pecans make it to the bed of the truck, and into a box. How would I rig up a vacuum so that the hard pieces do not go through the vanes of the vacuum? I want to keep this very simple, so that I only have a vacuum hose, and a holding box, and the ability to keep all other trash out. Anyone know of any diagrams or sites where this is addressed? I got ahead of myself. I put out an ad to see if anyone wanted any pecans, and yes, they do. A LOT of people. But I had to go to Vegas for a few days and do some real estate stuff, and therefore ............. So, I was thinking today as I drove, and now want to cobble together some things until I get a machine running smoothly. I kept coming up with "stuff", then kept remembering that I really want to keep it simple, and if I can find a way to do this through diverting simple vacuum hoses, that would do the trick, as far as collecting goes. Help appreciated. Steve don't reinvent the wheel. Use a centrifical separator. I have a 7.5 horse vacuum for a shop with this ahead of the motor/vacuum assembly. |
#4
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Vacuum cleaner principles
Karl Townsend fired this volley in
: don't reinvent the wheel. Use a centrifical separator. I have a 7.5 horse vacuum for a shop with this ahead of the motor/vacuum assembly. Karl, don't you re-invent the wheel. Richard, instead of cooking up hair-brained ideas about passing full- sized tree nuts throught the blades of a high-speed centrifugal fan, why not consider looking up how nut shelling equipment actually works. Likely, any decent-sized college with an agricultural program should have some books on the subject. You'll probably find a lot of stuff excerpted on the web. It's kind of useless diving into a project, planning to use a vacuum cleaner to do a job, and not even understanding how a vacuum cleaner works! Lloyd |
#5
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Vacuum cleaner principles
"Lloyd E. Sponenburgh" lloydspinsidemindspring.com wrote in message . 3.70... Karl Townsend fired this volley in : don't reinvent the wheel. Use a centrifical separator. I have a 7.5 horse vacuum for a shop with this ahead of the motor/vacuum assembly. Karl, don't you re-invent the wheel. Richard, instead of cooking up hair-brained ideas about passing full- sized tree nuts throught the blades of a high-speed centrifugal fan, why not consider looking up how nut shelling equipment actually works. Likely, any decent-sized college with an agricultural program should have some books on the subject. You'll probably find a lot of stuff excerpted on the web. It's kind of useless diving into a project, planning to use a vacuum cleaner to do a job, and not even understanding how a vacuum cleaner works! Lloyd There is a lot of information pecan processing machinery, but most of it is proprietary, and I have yet to find any with diagrams of the inner workings. Vacuuming and shelling and cleaning have nothing to do with each other, and work on entirely different principles. They cost in the $15,000 range for nonmechanical people. For right now, I have that 2.2hp vac that works just fine for picking them up. I built a plate in the inside of the drum where the discharge hose slams the pecans into the plate to knock loose any of the remaining four part outer husks. What I would like to do is make just a vacuum hose so that I can take them right from the ground to a hopper, and have the hulls and dirt fall off them, and end up with clean nuts in the hopper, ready to be taken to be washed, and cracked, and then take the nut meat out. I DO understand how a vacuum cleaner works, and even have an idea on how to make what I want, was just looking for more information, which is what you suggest that I do. I understand enough about vacuums to know that you can't run pecans through the vanes of the vacuum generator, thus, I was looking for a different approach. And I disagree with you. On many inventions and things that men have built, they were not told that it couldn't be done, or that it had never been done before, but merely given the problem, and without the burden of knowing this was almost futile, their thinking processes were not contaminated, and they came up with solutions to "unsolvable" problems that "couldn't" be done. Whether you think you can or can't, you're right. - Henry Ford - who, IIRC, came up with most of his ideas in his kitchen. What I want to do is to leave the scene with only the nuts, leaving all the trash there. Now, if a person wants all that falderal removed for aesthetic reasons, I'm happy with hauling it all off for a fee, and I have a separator screen that will take the pecans out in about half a second. I just want to keep it light, and not handle things any more times than I have to. My best idea so far is to mount a big shop vac motor on top of a 55 gal barrel, exhaust up. Put an intake on the side of the barrel. On the intake, inside the barrel, put a screen that will kick the pecan into a hopper, while letting the waste pass through and into a refuse pile. It's going to be a couple of simple hoses, some screening, and the right arrangements of said components. I have the cracker and sheller already figured out, just have to build one and try it until I fine tune it. Pecans must be cracked by compressing the ends, not by crushing the sides. This is how you remove two halves instead of getting a lot of small pieces. I'll get there, and obviously, from your post, you don't have anything to contribute to my post in the way of ideas .......... Steve |
#6
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Vacuum cleaner principles
In article , Steve B
wrote: "Lloyd E. Sponenburgh" lloydspinsidemindspring.com wrote in message . 3.70... Karl Townsend fired this volley in : don't reinvent the wheel. Use a centrifical separator. I have a 7.5 horse vacuum for a shop with this ahead of the motor/vacuum assembly. Karl, don't you re-invent the wheel. Richard, instead of cooking up hair-brained ideas about passing full- sized tree nuts throught the blades of a high-speed centrifugal fan, why not consider looking up how nut shelling equipment actually works. Likely, any decent-sized college with an agricultural program should have some books on the subject. You'll probably find a lot of stuff excerpted on the web. It's kind of useless diving into a project, planning to use a vacuum cleaner to do a job, and not even understanding how a vacuum cleaner works! Lloyd There is a lot of information pecan processing machinery, but most of it is proprietary, and I have yet to find any with diagrams of the inner workings. Vacuuming and shelling and cleaning have nothing to do with each other, and work on entirely different principles. They cost in the $15,000 range for nonmechanical people. I would take the names of the main manufacturers, and do a patent search using the Google Patents search engine. By now, all the basic patents have long expired, the older patents will likely be simple enough for you to cobble together. Joe Gwinn |
#7
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Vacuum cleaner principles
On 2/23/2013 6:27 AM, Lloyd E. Sponenburgh wrote:
Karl fired this volley in : don't reinvent the wheel. Use a centrifical separator. I have a 7.5 horse vacuum for a shop with this ahead of the motor/vacuum assembly. Karl, don't you re-invent the wheel. Richard, instead of cooking up hair-brained ideas about passing full- sized tree nuts throught the blades of a high-speed centrifugal fan, why not consider looking up how nut shelling equipment actually works. Likely, any decent-sized college with an agricultural program should have some books on the subject. You'll probably find a lot of stuff excerpted on the web. It's kind of useless diving into a project, planning to use a vacuum cleaner to do a job, and not even understanding how a vacuum cleaner works! Lloyd Gee, Lloyd, i dunno. Just trying to keep up with the spirit of this place? Isn't that what we do here? |
#8
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Vacuum cleaner principles
"Steve B" fired this volley in
: There is a lot of information pecan processing machinery, but most of it is proprietary, and I have yet to find any with diagrams of the inner workings. That's bull. I made one search and found the complete maintenance diagrams, parts lists, and principles of operation of an automatic cracker. ONE search term, one time "pecan shelling machines". Vibratory screening and air de-dusting/debris-ing are common, straightforward mechanical processes common in most industries. LLoyd |
#9
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Vacuum cleaner principles
BQ340 fired this volley in news:5128f676$0$44267
: Shop vacs don't pass the debris thru the fan. I'm perfectly aware of that, but he thinks it does. He has no concept of a regenerative blower. Lloyd |
#10
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Vacuum cleaner principles
Joe Gwinn wrote: I would take the names of the main manufacturers, and do a patent search using the Google Patents search engine. By now, all the basic patents have long expired, the older patents will likely be simple enough for you to cobble together. There are several vendors at flea markets around here with the machines. A polite request and they may give you a detailed look at how they work, and what problems crop up. They might even buy all the Pecans. Aren't crushed Pecan shells used to blast rust off steel? |
#11
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Vacuum cleaner principles
Let's suppose you can accomplish anything you might imagine, even without
knowing much about the principles. It's highly unlikely that your shop vac is 2HP unless it has an IC/fuel engine on it. Debris doesn't pass thru the turbine stage of a vac unless the filter is damaged or improperly installed. A dust plume coming out of the exaust port is evidence that the user doesn't know the proper filter installation procedure. I watched video of a large vac system on the bed of a truck that would suck up/collect gophers from their tunnels/burrows without injury so they could be exported as pets.. to Japan, IIRC. The canister is evacuated, causing the negative pressure. The small electric motor/turbine on most shop vacs isn't capable of maintaining the same negative pressure/exhaust volume in a canister that's 5-10x larger without losses in effectiveness.. the (same) hose won't have the same pickup characteristics. You're correct in assuming that I dunno jack **** about shelling nuts. I would be wondering if there wasn't another use for the shells, and who might want them. The subject of collecting nuts being presented in RCM.. perfect. -- WB .......... "Steve B" wrote in message ... I am going to go out and start vacuuming pecans this coming week. I guess I have about six 55 gallon barrels worth lined up. I have a 2.2hp 2.5" shop vac now, but want to make something that will do more than one thing at a time. Right now, this picks up everything, and I have one more step to separate the hulls. I'd like to leave them on scene, unless the homeowner wants them cleaned up, for a fee. Mainly, I only want to transport whole nuts, and as little hulls and other trash as possible. For this, I have figured out some screens and filters. I want to vacuum up the nuts in their hulls, plus the hulls, and have only the pecans make it to the bed of the truck, and into a box. How would I rig up a vacuum so that the hard pieces do not go through the vanes of the vacuum? I want to keep this very simple, so that I only have a vacuum hose, and a holding box, and the ability to keep all other trash out. Anyone know of any diagrams or sites where this is addressed? I got ahead of myself. I put out an ad to see if anyone wanted any pecans, and yes, they do. A LOT of people. But I had to go to Vegas for a few days and do some real estate stuff, and therefore ............. So, I was thinking today as I drove, and now want to cobble together some things until I get a machine running smoothly. I kept coming up with "stuff", then kept remembering that I really want to keep it simple, and if I can find a way to do this through diverting simple vacuum hoses, that would do the trick, as far as collecting goes. Help appreciated. Steve |
#12
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Vacuum cleaner principles
On Sat, 23 Feb 2013 12:39:30 -0600, "Lloyd E. Sponenburgh"
lloydspinsidemindspring.com wrote: BQ340 fired this volley in news:5128f676$0$44267 : Shop vacs don't pass the debris thru the fan. I'm perfectly aware of that, but he thinks it does. He has no concept of a regenerative blower. Lloyd Some "Dust Collectors" do send the incoming debris through the fan, so they can run it into a simple cloth bag. But they are made for sawdust only, you start slamming hard and large junk through the impeller and it isn't going to be happy. The more expensive Dust Collectors at least send the debris into a proper cyclonic seperator via suction first to drop out the big crap, and the impeller just passes the fines on to the bag house. If you're trying to pick up big stuff like nuts off the ground, this is what I'd be looking at. And make the shelling a seperate step. The more important thing to check on with a Shop Vac is it's 100% Bypass - even after the dust filter you don't want to send any of the exhaust air through the electric motor for cooling. The really cheap vacuum motors pull the exhaust air through the blower motor for cooling, and between the bearings and the brushes and inpingement on & chemical deterioration of the windings, the dirt and vapors kills them fast. -- Bruce -- |
#13
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Vacuum cleaner principles
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#14
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Vacuum cleaner principles
"Pete S" wrote in message .. . How about just getting one of these? http://www.thenutwizard.com/ Pete Stanaitis My experience SO FAR tells me that this device would work well on a yard that has been mowed regularly, and there aren't any big clumps of grass, nor nuts that have migrated down into the grass from being left there for very long. At some locations, I have seen where it looks like the nuts have never been harvested, and that would take a cleanout, and a year or two of picking out the rest before the first clean crop would appear. As with most items, they show them displayed in the best of light, and in the least demanding situations. That Mantis cultivator looks like it is tilling dirt the consistency of sawdust. Not like the lava rock caliche where my house is. But I did talk to a fellow who has one, and really likes it for getting into flower beds, and places where one wants a light touch instead of the root grabbing 5 horse tillers that will kick your ass if they get the chance. I'm going to a house the next few days that should have about two 55 gal barrels full of them, so I should know a little more soon. Only modification I did was put a small piece of plate where the stream comes in and would normally hit the filter head on. I used a piece of angle, and now everything hits the angle, and almost all hulls are knocked loose, and most of the pecans are cleaned pretty good with just that. Separating pecans means dumping it over a vibrating screen that looks like a barbecue grill, and everything but the nuts falls through. A blower blows all the light hulls and other stuff away, and you're left with clean pecans. Wife and I were talking it over, and we may just stick with selling the whole pecans in shell because shelling and cleaning looks to be an expensive process. We'll see as we go. Next year, October and November will be the start of collecting nuts. But by then, we should have some clients who will want to sell their pecans, or even have them removed as cleanup, and pay us. I'll have several months to play with the gear. Steve Next on to shelling and getting halves instead of a zillion pieces. |
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