Hello Sugu,

You mention that the belt speed is 5 m/s. Is that correct?

Regards

Paul ■

Hello,

Your query / subject issue is not clear.

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 ■

Further to Ishwar's comment about clarity I suggest it is time for all contributors to start using the thread rating box which rests somewhere below the comments. I had not done this previously because I regularly ignored confusing or begging threads and moved on to more worthwhile effort. Some threads are so banal that they encourage scorn "What is the shipping cost through the Suez Canal?" was one of my recent favourites. Other threads are poorly concealed pleas for free designs and then degenerate into criticism of the advices offered. Roland H has highlighted the need for feedback along this normally one way street and I now feel the time has come to call a halt to situations where a thread starter can introduce new threads, even an identical thread, before replying with feedback to the earlier thread.

Can the moderators consider postponing further thread postings by such participants until they have given some feedback on their previous thread? I only posted one thread, got no reply and so consider myself innocent of feedback denial.

On this particular thread I suspect the starter is possibly talking about skirt rubber fixing, I sincerely hope he is, but the terminology is nowhere to be seen. Search engines are getting better if this guy has found the website without knowing what he is asking about. If we don't know: how does he know? I also suspect that the thread starter has an Indian connection and recommend that he buys Ishwar's book so that he can familiarise himself with the business. (Ishwar: no commission charges applicable!) ■

Dear John/Roland:

Excuse my infusion on the banal and confusing discussion.

I do not believe the thread starter understands the difference between this specific belt = skirting and the hollow section = material retainer, which is usually steel rods/bars. I could be mistaken and then should be punished for indulging on further confusion. Maybe a bad mark will teach me.

Designers of feeders should refrain from rock contact with the rubber skirting (belt?). Rubber skirting cannot withstand the pressure or other flow dynamics. Steel or other liners (hollow bottom sections) should have a bottom configuration that keeps rock from applying any force to skirt rubber. It's only purpose is to limit dust and rock spittle from escaping the feeder flow chamber. The shape of the hollow section is critical to good feeder performance = power, belt wear, rock discharge onto work platform. ■

Forgot:

Most likely, thread starter slipped a decimal place and the feeder speed should have been 0.50 m/s. Maybe just a spelling mistake, like I practice on the nrom. ■