I have an uneasy sense of deja vu here??

So the belt discharges into the screw conveyor, but sometimes the belt discharge needs to bypass the screw.

Maybe have an outlet in the screw conveyor casing directly under the inlet. Normally, close this outlet and run the screw to discharge via the screw. Open the outlet, stop the screw to bypass. ■

can you post a sketch , it is not clear what is what you want to achieve....

regards

marco ■

Recycling an existing thread.

https://forum.bulk-online.com/showth...threadid=14448 ■

your belt is DEAD................

you can start mourning him.......

when the screw is running it will pull the belt by friction to one side , the force can be calculated but it is going to be large.

when the belt si running the dirt will have to go under the screw and the force on the belt and screw will be also large aqnd a lot of spillage .

. i tought the screw would be at the head pulley , after the belt and then switable gates trough the screw .

regards

marco ■

that is better, but let me sleep on it .

marco ■

Why can't you mount the screw across the feed hopper at a convenient height and as far upstream as possible? Otherwise, forget it. ■

let me answer that ,

maybe the client wants to use the screw as a diverter , similar to a plow but active .

the way to do it is to hinge the auger and increase the angle with the belt , the hinge will allow the auger to be raised so that the material flow will be free in the belt when there is no need for the auger

then when you need it you just lower it , if it acn allow for a small 4 particles clearance between the belt and the auger the belt will feel the pull but will resist the abrasion .

if there are rocks in the belt meke sure the auger rotation does not wedge then under the auger , you might need to design the auger flights to reduce the vertical force on the belt ,

so slope the auger , to 45 degrees fron the belt center line

, increase the clearance if you may

a,d adapta amechanism to raise the auge when not in use , it could be very simple mechanism with mechanicall lock when deployed and when retracted , like a landing gear.

it can be done .................................

marco ■

Hello All,

I've not delt with too many augers, but let me ask you a question. If the auger was not perpendicular to the belt, but rather canted at the same angle as the pitch of the auger flights, and if the auger would park it self with the screw threads down. The resistance to the dirt would be more like a rake, and not the maximum resistance of the flight.

I dont know if it would let enough material pass, but it should'nt put any side loading on the belt when the auger is parked.

Anyway, just a thought.

good luck! ■

I concur, although with some reserve, the flights even if the auger is stopped, will tend to wedge material between the belt and the stopped auger. This could destroy the belt very fast.

I believe they have to raise the auger when it is stopped, to allow for free flow on the conveyor.

If the material conveyed is not pre-screened, and it is dirt with lumps, soil or something similar, the lumps can wedge and permanently damage conveyor.

If it is sand or some very fine regular material without lumps, it will be OK.

Marco ■

Now we've gone from an auger to a plough by a very tortuous route. The only question is. If a plough will do the job; why was the auger ever considered in the first place? It's not the first time to say "If there's a hard way to do a job somebody will find it." ■

I understand your need for an auger .

If the naterial can sometimes be humid and have properties thet can vary. or the belt acrries a heavy load .

I have tried different types of plows since 1978 never tried an auger , i believe it is worth a try.

You will have to flatten the conveyor when lowering the auger if the auger touches the conveyor you can be in trouble . I still satnd in the clearnce with the auger , the rotation of the auger should be counterclock wise , lifting the material from the approaching side.

If you work this well you might be able to file a patent this docunents can be used as proof or precedent , you will have only one year to file.

Can you make a pilot installation fast ?

Marco ■

think abouth this option to balance the side load on the conveyor and reduce the wear due to material slippage under the auger and over the belt.

an auger with tuo oposed flights one driving product to the left and the other driving material to the right it is like having to augers together tied in the center .

This auger could be at 90 degrees with the belt , you will still need to raise it when not in use , the distance between flights should be increasing arithmetically to allow for a uniform draw on the belt .

there it is feasible......

Build as son as possible a prototype anf file for a patent, you can file without a prototype but a prototype can tell you the fine letter of nature.

Regards

and good luck

marco ■

Originally Posted by Marco A. Flores

Build as son as possible a prototype anf file for a patent, you can file without a prototype but a prototype can tell you the fine letter of nature.

It's too late for a patent, you've published the idea. You need to file BEFORE publishing. ■

Sorry to disappoint you. You can do it, if you do it before a year goes through. Check my patents in the US Patent Office and in European Patent Office. Also in India.

Regards,

Marco Flores

P.S. It will not become previous art until a year goes by. The document acts as a precedent and gives you specific rights. I might be wrong, but it has worked before.

Marco ■

patent laws in differnt countries differ , But in the us is not rare to have duplicated patents . for the same article.

it all depends if you are willing to sue .

If you sue you can win or loose and a ot depend on where you file your demand.

Boston courts are not the same as Chicago courts .

a good friend of mine , believing his licencees were infinging his pattent and sued, a large corporation , he lost , he lost everything even his company and his patents. Now he works for the company he lost to.

at the end patents are only as good as your lawyer is.

marco

so it is always smart to associate with a large corporation when you are filing patents. ■

It will also depend on what your claims are . ......

regards

marco ■

As far as I know from UK law, published is published. If you've published a general description then that's the end of your chance of a patent. Discussion of your ideas can be done with others but only under a non-disclosure agreement.

If another company has prior art then a patent, even if granted, is worthless against that company.

The claims are everything, but not all can be worthwhile so you end up with something so particular that it's of no significant value.

You need deep pockets even if you have managed to get a patent. You might even end up fighting an application for revocation ■

yes in some places even if you give asample to somebody withouth telling what is inside , and you want to patent afterwards

You might not be granted apatent.

In other places the patent will be published , Granted after it has expired.

In other places like England they publish the patent application before granting you the patent, so it can (has to be ) be defended outside a court.

Claims .

Sometime you want broad claims , sometimes you want specific claims.

It is a question on where you stand .... and what is the purpose of the patent.

this is what makes life fun , there are all kinds of alternatives .

Regards

marco

By the way I do not believe the Poster wants to get a patent anyway.

They are not cheap and if you are a user not a producer , it makes no case in front of the stock holders ■

Sorry I tried answering your mail but somehow it got stuck in the system.

if you require that precision you will need belt feeders , probably weigh belt feeders to feed the conveyor that feeds the gate or the augers .

try using the auger theoretical volumetric capacity full bore , at 50% or less , keep the shaft clear of the solids if possible , that way you will keep the torque reasonable and the equipment will last longer.

marco ■