Beginners Guide to Solids Handling

Posted in: , on 2. Mar. 2007 - 11:19

A Beginners Guide to Solids Handling

Data Bases are dangerous places for sourcing bulk solids properties.

Treasure the measure of values secured to establish designs that work properly.

Powders, like starches, form wonderful arches yet 'flush' when loosely dilated.

Granules and lumps form more stable clumps and to orifice blocking are fated.

It is really the norm for a bulk hopper form to have regions of stock that's immovable,

and when new stuff goes out, there's often a shout when the old is then not removable.

It's often a mission in early commissioning to correct such project shortfalls.

But you all too often that the design is just rotten or simply all balls.

A technology freak is a bit of a Geek, but when it's solutions your after.

Wherever you go, you will find that Mass Flow prevents many a production disaster.

Helical screws make regular news for clever design innovation.

Of ubiquitous use, they stand much abuse and relieve many a user's frustration.

They fulfil a need to convey and feed all types of powders and grain.

With also successes in chemical processes, they merit industrial fame.

A trainee at Ajax one day, turned round to his colleague to say,

'All these 'ere particles are funny old articles and they behave in a peculiar way'.

His partner replied with a grin. That's the type of business we're in'.

'If you want to know why, don't be bashful or shy, just drop in next door and ask Lyn'.

'He thinks he's profound as he has been around, I would guess, since Archimedes'.

His writing's prolific, and if not terrific, at least serves some industries needs'.

So if you are yearning for bulk solids learning, this is the way that it looks: -

Consider investing in bulk powder testing and powder technology books.

Lyn Bates

Books For Beginners

Posted on 5. Oct. 2008 - 05:59

Hello Lyn, are there any books you would recommend for a newbie. I have taken over an area with lots of chutes and conveyors, we have very sticky material. I have been reading a lot of the posts already and downloaded PDF's to gain a rapid understanding of chute design and flow of solids. Are there any technical papers i can get hold of to further enhance this learning.

I am also looking to attend acouple of seminars from TUNRA and David Beckley, as there are a lot of self professed experts, if i can learn the basics and use some uncommon sense then i think we may get some where.

Thanks for your help

Thankyou John Piestrzeniewicz

Re: Books For Beginners

Posted on 6. Oct. 2008 - 03:05

Originally posted by Pesty

Hello Lyn, are there any books you would recommend for a newbie. I have taken over an area with lots of chutes and conveyors, we have very sticky material. I have been reading a lot of the posts already and downloaded PDF's to gain a rapid understanding of chute design and flow of solids. Are there any technical papers i can get hold of to further enhance this learning.

I am also looking to attend acouple of seminars from TUNRA and David Beckley, as there are a lot of self professed experts, if i can learn the basics and use some uncommon sense then I think we may get some where.

Thanks for your help

Anything you buy or order/ request from the CEMA or VSMA folks about conveyors are bibles for solids handling. The "Van Gorp" pulley people are a mother load of material as well.

I was involved with surface and underground conveyors/screens feeders/of all types for 22 years but it all on the job experience involving theshoveling and greasing, installation, alignment, belt training, belt splicing, replacing idlers and main components such as drive/driven gear change outs, drive chain replacement, electric motor and reduction gear change outs, replacing/welding pulley lagging sections, bearing replacments and installation of bearings on pulley shafts, installing replaceement pulleys on drive and driven shafts.

Realising a conveyor belt is a linear functioning item and gravity is the enemy is the first step as everything proceeds forward from the tail pulley.

Understanding that cable supported belts and steel supported belts are different animals is number two.

If you train a belt you must start at the tail pulley first that is one of the golden rules CEMA taught me.

Not From Tail Pulley

Posted on 6. Oct. 2008 - 06:19

Dear Mr.Izaharis,

I have gone through few books and practised at site also.

Tracking ( belt training ) from tail pulley should be the last, if could not be avoided, option.

The reason is that the endless lengths at both edges of the belt may be altered when we try to adjust the tail pulley. This may cause the joint weak and also cause different tension among cords.

Waiting for experts comments.

Re: Beginners Guide To Solids Handling

Posted on 6. Oct. 2008 - 09:00

Thanks Izaharis,

You can gain so many insights just by reading the posts by a few key people to sort the wheat from the chaff.

I have had a brief look at the CEMA site and Lyn has sent me some docs to look through.

I have put my uni studies on hold for a year while i concentrate my efforts to turning this area around as we are slowly turning the Queen Mary around (reactive to proactive).

Pesty

Thankyou John Piestrzeniewicz

Re: Not From Tail Pulley

Posted on 6. Oct. 2008 - 04:23

Originally posted by sganesh

Dear Mr.Izaharis,

I have gone through few books and practised at site also.

Tracking ( belt training ) from tail pulley should be the last, if could not be avoided, option.

The reason is that the endless lengths at both edges of the belt may be altered when we try to adjust the tail pulley. This may cause the joint weak and also cause different tension among cords.

Waiting for experts comments.



If you are using a belt training idler at every ten idlers that will not happen if the splices are square; saying that does not discount stretched out belting though.

A Belt Training Idler At Every Ten Idlers ?

Posted on 8. Oct. 2008 - 09:56

Dear Mr.Izharis,

I am not from design. We are noy using one belt training idler at every ten idlers. We use them only when and where required.

Is there any standard recommondation?

Belt

Posted on 8. Oct. 2008 - 03:17

Greetings and salutations SGanesh,

When I was working with the continental folks on our belts underground they always told us to have one training idler for every ten troughing idlers as a matter of principal operation.

Re: Not From Tail Pulley

Posted on 9. Oct. 2008 - 11:00

Originally posted by sganesh

Dear Mr.Izaharis,

I have gone through few books and practised at site also.

Tracking ( belt training ) from tail pulley should be the last, if could not be avoided, option.

The reason is that the endless lengths at both edges of the belt may be altered when we try to adjust the tail pulley. This may cause the joint weak and also cause different tension among cords.

Waiting for experts comments.



On the tail pulley- I ment the idlers coming forward from the pulley frame (the idlers on the cables or the steel stands) and not physically adjusting the tail pulley frame with the turnbuckles itself as it would really screw things up by taking things out of the centerline

I apologise for that I should have been more clear regarding this issue.

Useful Forum

Posted on 10. Dec. 2009 - 06:20

Over here at Conveyability Inc, we are finding your forum useful for getting and giving customer support. We like your little "poem". Check us out at http://www.conveyability.com.

Thanks, and to all our fellow forum users, have a Happy Holidays!