hi

what is cleated belt? ■

A belt with cleats on to enable conveying at steeper angles than could be achieved with a smooth belt. ■

Dear Sir,

I disagree with your opinion.

Cleats are used to stop roll-back of material at steeper angles.The design of the cleat basically depend on the material size,angle of repose and gradient.

There are belt manufacturers who offer different configarations of cleated belts. If the gradient is very large, side walls are also needed. You can visit manufacturers sites of steep angle conveyors for further reference.

Ketan

Fairtech Engineering Co ■

and if the gradient is 90 degrees the cleats are more like buckets! ■

Dear Mr. Ketan,

Design of cleat is very much related to capacity of conveyor also. And as per my knoledge all steep angle conveyor is having side wall on which the cleats are bolted.

In this connection you may go through the belt wall/maxo-flex installation mannual.

Regards.

A.Banerjee ■

According to my nolege I think cleats are moulded onto the basic flat belt.

Fairtech Engineering might be interested to learn that not rolling back is essentially identical to enabling conveyance. Its part of maintaining mass balance in the system! Well; trying anyway.

'Tis the time to be Jolly already. ■

Dear All,

Please note that we manufacture steep angle conveyor systems since 10 years.

We know the construction of belt very well, but since we do not manufacture the belt I suggested to visit belt manufacturer sites.

Ketan ■

Cleated belts can acheive high-angle conveying but such special belts cannot be scraped clean and much material is carried back especially if the material is moist and sticky.

Sandwich Belt High-Angle conveyors are a better solution using smooth surfaced rubber belt that can be scraped clean. The bulk material is hugged in a sandwich between two belts. The hugging pressure develops the materials internal friction so that slide back cannot occur at any angle even at 90 degrees (vertical).

Check out the DSI Snake Sandwich High Angle conveyors at the Dos Santos International Web Site.

Joseph A. Dos Santos ■

But subject to the caveats in this thread

https://forum.bulk-online.com/showth...?threadid=8849 ■

Please try it also with chain conveyors..May be you will have more success... ■

Dr. Ergun,

Chain conveyors have their place but as steep angle conveyors they require very high power and, due to high wear, are very high on replacement parts and maintenance.

Joseph A. Dos Santos ■

Hi

Had a look at the snake conveyors.

To me , it woudl seem that there are horses for courses - as per usual.

Given there are 2 belts, lots of moving parts and also interesting access to change idlers > a conventional bucket elevator would have to rule the roost in some simple up/down cases for sure????

I prefer less moving parts and always thought given to safe maintenance activities.

Cheers,

James ■

As a manufacturer, we try to design cleats to fit a material and incline. There are many good replies in here, but until you give us the incline angle, it's a waste of time. Elevator? Sandwich? Cleated? That covers everything from 10 degrees to 90 degrees incline. Big difference. What is your desired incline and material, if you would please.

Here are some of our cleated belt patterns.

http://www.leggbelting.com/profiles.htm

Regards,

Ron Marler

Legg Co. Inc.

www.leggbelting.com ■

Mr. Morrish,

Your reasoning would apply to long conventional conveyors which we all know are very economical and low in operating and maintenance costs.

Dos Santos Sandwich Belt High Angle Conveyors are pursuant to rationalization in the conventional conveyor technology subject to the same proven, mature rules of design and utilizing long proven equipment. The prophecy that these would exhibit the same operating and maintenance characteristics has been fulfilled in the many installations.

As I previously mentioned, many of the lower tonnage installations have been specified by our customers knowing that it would not have the lowest initial cost, but recognizing the superior long term economics.

Joseph A. Dos Santos, PE ■

Rather a sweeping statement I think! Parts on ALL machines wear, are subject to accidental damage and suffer to a lessor or greater amount due to neglect when in use.

Any materials handling machine needs to be selected according to the material to be handled, the duty required and the physical layout. One type does not fit all.

IMHO any single piece of equipment is rarely a 100% 'fit', there are pro's and con's to all you just have to aim for the 'best fit' and live with the residual limitations. ■

Mr. Designer,

My statements are not sweeping or broad (like sandwich conveyors are always better everything else is always worse) They very targeted. In the case to which you are responding, my claim is with regard to chain conveyors, which I am assume are chain flight conveyors.

1.) We don't claim to be lowest initial cost at the lower capacities but we do challenge the readers to analyse life cycle costs.

2.) When you drag a steel bar and plow forward the bulk load, both on a steel plate, it takes more energy and produces much wear compared to laying the bulk on a belt (or belts) and riding these on rolls that turn on lubricated anti-friction bearings. We're not splitting hairs here.

3.) The track record is out there though not (at this point) in large numbers (100 plus) that would make it common knowledge. We're working on that.

Any system can be mis-applied that is why I have tried to be very targeted in my claims and statements.

Joseph A. Dos Santos ■