Fixed Tripper Discharge Elevation

Posted in: , on 18. Apr. 2014 - 15:23

Dear Sir,

One of the Project, we have to provide fixed tripper in JNT to divert the flow. Currenly we are facing problem that the layout is fixed one. Because of providing the interconnection fixed tripper discharge elevation is 15.8m and further conveyor is 0.0m. Since there wont be any support for that much height, whether this much height is possible. The sketch is also for ready reference.

Please suggest the arrangment will work without any poblem. Any where same is installed anywhere FOR SUCH HEIGHT OF FALL.

Attachments

ft for 7c (PDF)

T. KARTHIK BANGALORE

Re: Fixed Tripper Discharge Elevation

Posted on 19. Apr. 2014 - 07:06

Hello,

Your query is not quite clear, but it seems about the conveyor arrangement wherein belt rise due to fixed tripper is 15.8 m. If it is so, then the fixed tripper portion will comprise of concave radius and the inclined portion to reach the 15.8 m rise. This is for carrying run of belt. Then you have to bring the carrying belt vertically down at the conveyor original level. Thereafter the carrying and return belt will run together as prior to tripper. It seems at the tripper head pulley, you are diverting the discharge to equipment at higher level. In case you are bringing down as feedback then you have to use appropriate chute for that. The complexity will depend upon lump size.

In case the issue is something different then clarify.

Ishwar G. Mulani

Author of Book : Engineering Science And Application Design For Belt Conveyors (new print November, 2012)

Author of Book : Belt Feeder Design And Hopper Bin Silo

Advisor / Consultant for Bulk Material Handling System & Issues.

Pune, India.

Tel.: 0091 (0)20 25871916

Email: conveyor.ishwar.mulani@gmail.com

Website: www.conveyor.ishwarmulani.com

Re: Fixed Tripper Discharge Elevation

Posted on 20. Apr. 2014 - 04:30

Hello,

Referring to my earlier reply, firstly I missed to see your sketch, but incidentally reply was in tune with your query.

I add following general information as an option, although may not be suitable to your shown arrangement.

It is also possible to construct such conveyor comprising of up inclined portion, then fixed tripper and then declined conveyor (after fixed tripper). This will avoid large drop for feed back chute at the fixed tripper. It will also result into less consumption of power when conveyor is conveying material along its full length due to feedback. In this arrangement fixed tripper size will be normal and it will appear at hump of inclined-declined zone.

Ishwar G. Mulani

Author of Book : Engineering Science And Application Design For Belt Conveyors (new print November, 2012)

Author of Book : Belt Feeder Design And Hopper Bin Silo

Advisor / Consultant for Bulk Material Handling System & Issues.

Pune, India.

Tel.: 0091 (0)20 25871916

Email: conveyor.ishwar.mulani@gmail.com

Website: www.conveyor.ishwarmulani.com

Roland Heilmann
(not verified)

Clarification Needed

Posted on 22. Apr. 2014 - 07:48

Dear Mr. Karthik,

as your query is open to interpretation, could it be that you want to divert at level 15.8 m and send one leg straight down to level 0?

If you want to keep all other arrangements / diverters + chutes, there's seemingly not enough space to do so between levels 15.8 and 11.5 above diverting. A moveable tripper installation could be a technical solution, from an estimation point of view there could be enough space on level 15.8 for the side view, but perhaps some difficulty in front perspective as there's not very much space between both incoming conveyors. I trust you have gravity take-up with perhaps some spare belt length to be used?

As for sending the material straight down: The chutework would have to be carefully designed in the like of the other installations, limiting the height of free fall to the acceptable and redirecting the flow to the downstream conveyor. This chutework would probably need to leave the boundaries of the tower.

Alas there's not very much input from your side as to material, conveyors, throughput etc.

Perhaps you hire a consultant / external expert to do this job for you?

Ragards

R.

Drawings Are The Language Of Engineering Science

Posted on 23. Apr. 2014 - 03:58

Examine your beltline in front elevation and you ought to realize that the downcoming belt seriously interferes with the uppermost sloping chute side. Falling material will ricochet from that removed section and either get carried into the bend section or simply provide a horrendous spillage problem. There seems to be no obstruction to shifting the bend arrangement much further back to alleviate the situation. You can never expect to restrict the spillage and misalignment with this sort of show.

Why not splash out on an extra pair of bend pulleys at the building end? Then you won't have a seriously cut away chute; the belt guarding situation will ease and the spillage can be reduced to manageable proportions.

Some words of advice. "In conveying work the customer is rarely right!"

Where is the 'Angry' emoticon when I really need it?

John Gateley johngateley@hotmail.com www.the-credible-bulk.com

Roland Heilmann
(not verified)

Thor's Hammer Is Lost ;-)

Posted on 23. Apr. 2014 - 07:27

Hello John,

do smash me if I'm wrong or misinterpret your post, but I think the owner of the thread wants to insert another chute angled 68deg down, it is not the belt but the imagined chute which is coming down. And he needs to divert or else to have a moving tripper installed. Or something else, lessee.

Regards

R.

Chute Flow

Posted on 24. Apr. 2014 - 04:49
Quote Originally Posted by Roland HeilmannView Post
Hello John,

do smash me if I'm wrong or misinterpret your post, but I think the owner of the thread wants to insert another chute angled 68deg down, it is not the belt but the imagined chute which is coming down. And he needs to divert or else to have a moving tripper installed. Or something else, lessee.

Regards

R.

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I do think the thread starter is looking for free engineering.

The selected chute and bifurcations do over-stress material on impact, produce degradation and dust, produce excessive chute wall damage together with their flop gates. The design will produce belt side thrust forces that will misalign the receiving belts as well as tear off the rubber covers, when compared to a design fit-for-the-purpose.

Thus, the proposed design is not good, put another way, it can be made better.

What more can be said other than fixing the geometry?

Lawrence Nordell Conveyor Dynamics, Inc. website, email & phone contacts: www.conveyor-dynamics.com nordell@conveyor-dynamics.com phone: USA 360-671-2200 fax: USA 360-671-8450