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2021....
- Thread starter Moneybox
- Start date
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Moneybox
Philip & Sandra Box
I told Jason I wasn't taking the dryblower out today because it's the Labour Day holiday and I'd rather wait until a workday to make dust. He decided to clean out the dust that went through the cloth that's most likely too open.
It was very fine so I gave him some rinse aid but I think he got a bit much so half the water had to go.
The hose from the pump was just pushed on. I said to Mrs M to move aside just in case it blew off. Well she reckons she did move but I guess the water followed
layful: 
He wet the brew down and tipped the top off a couple of times to reduce the volume before putting it through the sluice.
I don't know how much of it he actually recovered but this is super fine gold. It's already passed through 125 m icron cloth. I know Mrs M would have flushed it away but it's now in the snuffer bottle along with the little pickers from yesterday
Moneybox
Philip & Sandra Box
Tathradj said:
No idea Tathradj, these are a terrible rim to fit. The outer diameter of the boltholes is too small to even take a 3/4" rattle gun socket. You need a neat fitting 3/4" or 19mm thin walled socket to reach the wheel nuts. The rims came on a trailer and we've used them from time to time just because they have a set of inflated tyres with tread
Moneybox
Philip & Sandra Box
Nightjar said:Morning MB,
It works, that's is the priority, few tweaks and all we viewers will be watching you reap the rewards.
Now a new bit of poly pipe for the banana should only take half hour so we can expect to see the next cloud of dust at smoko?
***When you are up and running, have an unfinished project here you maybe interested in for a next summer project to keep you out of mischief and from under Mrs MB feet. FREE
I'm intrigued
Moneybox
Philip & Sandra Box
I think Tony put a curse on me when he said that all these dryblowers are a work in progress :lol:
Two things came out of our little test. The amount of dust that dropped through the cloth on the riffle trays shouldn't have been there and the classifier didn't clear the heavies off.
Today I let Goldilocks down to the ground and spun it up again. The classifier vibration seems twice as good at full revs than it does with the motor backed off slightly. I don't know if it might clear better with a bit more speed but without trying it I'll never know so I ordered a smaller pulley for the shaft up there.
For the riffle trays I taped off half of the open area of the cloth. It mightn't be exactly half but the free flow should be greatly restricted. I had the same trouble on the little Keens so I changed the supplied cloth for a nice piece of polyester with a close weave and fixed the problem. It's not so easy to change the cloth here but reducing the open areas will create more pressure below the cloth.
It's raining now so we won't know for a few more days
Two things came out of our little test. The amount of dust that dropped through the cloth on the riffle trays shouldn't have been there and the classifier didn't clear the heavies off.
Today I let Goldilocks down to the ground and spun it up again. The classifier vibration seems twice as good at full revs than it does with the motor backed off slightly. I don't know if it might clear better with a bit more speed but without trying it I'll never know so I ordered a smaller pulley for the shaft up there.
For the riffle trays I taped off half of the open area of the cloth. It mightn't be exactly half but the free flow should be greatly restricted. I had the same trouble on the little Keens so I changed the supplied cloth for a nice piece of polyester with a close weave and fixed the problem. It's not so easy to change the cloth here but reducing the open areas will create more pressure below the cloth.
It's raining now so we won't know for a few more days
Yep,
Sounds like Ovlov Rims. :awful:
Sounds like Ovlov Rims. :awful:
Moneybox said:Tathradj said:
No idea Tathradj, these are a terrible rim to fit. The outer diameter of the boltholes is too small to even take a 3/4" rattle gun socket. You need a neat fitting 3/4" or 19mm thin walled socket to reach the wheel nuts. The rims came on a trailer and we've used them from time to time just because they have a set of inflated tyres with tread
Moneybox said:
MB, Have the same rims on our caravan, use a socket similar to this one. It is stored under seat of the ute with a 100mm extension and bar so we don't ever leave home with out it.
https://www.supercheapauto.com.au/p/toolpro-toolpro-single-socket-deep-1-2-drive-19mm/219873.html
MB, Not sure what you are trying too achieve by increasing the pressure below the cloth? This will not reduce the amount of fines passing through the cloth. The only way to prevent that is with tighter weave.
Rule of thumb, no light should show through the cloth when held up in front of you.
If you didn't have your great idea of the "non return" flaps the fines below cloth would be even greater. Presently, even though you collected some mustard gold under the cloth, you will be blowing more away, somewhat similar to a continuous air dryblower.
Rule of thumb, no light should show through the cloth when held up in front of you.
If you didn't have your great idea of the "non return" flaps the fines below cloth would be even greater. Presently, even though you collected some mustard gold under the cloth, you will be blowing more away, somewhat similar to a continuous air dryblower.
Moneybox
Philip & Sandra Box
silver said:
Honda told me flat out is good. Anything under 3/4 revs will glaze the bore. My engine doesn't seem to feel the work but then it's not been fully loaded. The most common engine about here is the Honda GX160 and I bought a GX270, 270cc, so it should have ample power. It's the speed of the vibration that I'm interested in. The rest of the machine is working fast enough but the classifier is not clearing the rejects and therefore the fine dirt can't get through.
Hi Phil,
That's an interesting comment from Honda, seeing as their awesome inverter generators have eco mode....??
In regard to the agitation speed, (I have zero experience with dry blowers) with a wet plant, on the shaker bed, its not really about faster, harder is better.
It's about achieving that harmonic resonation that will all of a sudden have material going crazy as the resonate frequencies match...
With our shaker bed, a tip I got from Terry Fitzgerald was to pick a bolt or something on the bed and adjust the engine rev's until the bolt appeared to be shaking anti clockwise, then the speed was right!!
You do need to do this though with material on the bed.
Hope this helps?!
That's an interesting comment from Honda, seeing as their awesome inverter generators have eco mode....??
In regard to the agitation speed, (I have zero experience with dry blowers) with a wet plant, on the shaker bed, its not really about faster, harder is better.
It's about achieving that harmonic resonation that will all of a sudden have material going crazy as the resonate frequencies match...
With our shaker bed, a tip I got from Terry Fitzgerald was to pick a bolt or something on the bed and adjust the engine rev's until the bolt appeared to be shaking anti clockwise, then the speed was right!!
You do need to do this though with material on the bed.
Hope this helps?!
- Joined
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G'day Moneybox....dont blame me mate....I'm only talking about my bitter experiences....I'm sure yours will be different. Dropping your unit off the rubber will help a heap. If there is any "throw" in your vibration mechanism make sure it's throwing downhill and not trying to send it back up the screen. before you change your screens out to a finer weave (and again...I dont run bellows) maybe try running some foam etc underneath..if you have enough air coming up this may help stop the dirt passing through...or if you have enough of the material run 2-3 layers.
- Joined
- Jul 15, 2015
- Messages
- 354
- Reaction score
- 773
Nightjar said:
Depends on the hair dryer...I run constant and catch that size gold easy peasy.
Goldtalk Leonora said:
Fair enough Goldtalk, however have you ever tested to find how much you are throwing away?
MB,
Just a thought regards your top screen bogging down.
Maybe adjusting the angle of the screen may help?
21 is good starting point?
Also your mention of speed adjustment plays an important part. "Fast" isn't necessarily best.
The returns from your first minor trial were successful so you are not far off full production.
Must be frustrating now the ground is damp?
You could remove Mrs MB's dry banana palm and shake that over the screen.???
Just a thought regards your top screen bogging down.
Maybe adjusting the angle of the screen may help?
21 is good starting point?
Also your mention of speed adjustment plays an important part. "Fast" isn't necessarily best.
The returns from your first minor trial were successful so you are not far off full production.
Must be frustrating now the ground is damp?
You could remove Mrs MB's dry banana palm and shake that over the screen.???
Moneybox
Philip & Sandra Box
Nightjar said:
I could drive with this cloth in front of me. It is too open but it's there now so until I've done some serious testing I won't be changing it. I was told to buy 125 micron and that's what I got but I think that might suit constant air flow.
The other problem I have is no park brake on Tonka the loader. As soon as you touch the foot break is stops the drive so there's no was of gently creeping forward. It's pouring rain at the moment so this might be a good time to pull the park brake drum off and see what's going on under there.
Yesterday I pulled all the solar panels off the top of the bus and hit it with the pressure cleaner. I have some liquid rubber and a roll of fabric to seal all the seams and some solar reflective paint to finish the job. It should be white from the waist up when the job is done but it's wet now so that job is on hold.
Moneybox
Philip & Sandra Box
Nightjar said:
Yes it may be too flat. It's set at 18 but not easy to change because of the vibrating mechanism. The reason I want to speed up the vibration is that just before top revs on the engine the stones on the screen are sitting still. Right on flatout the stones start to dance but that's on an empty screen. A bit of a load and that little extra in the revs will drop off and I'm already at the limit. When I first dropped dirt on the screen it fell through but the next choked it. It most likely would have been ok if I'd been better on the loader and gently fed it in but I gave it a half a bucket to deal with.
Simmo, good point on the generator revs, they spend a lot of time not far above idle.
