Hello and thankyou for your question: We need a few more questions answered to identify why you are NOT getting the TPH .

QUESTIONS:

1. What do you mean, NOT getting the 40 MTPH? Overloading?

not separating big beans from small or trash out of beans?

2. Are you trying to size to specific product range or scalp sticks stones and trash out of the soybeans?

2. I need a sieve analysis of the bean sizes going onto the screen, this will tell us if you have a lot of NEAR SIZE beans, trying to separate a small amount out of a large feed....tends to be a difficult task.

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I converted your metric numbers into imperial for my own purpose:

1500mm = 60" inches or 5 feet wide screen box

2000mm = 80" inches or 6.6 feet long screen box

total sq feet: 33 square feet or a 5' wide x 6.6' long screenbox

Meaning: 40MTPH divided by 33 = 1.2 tph per sq foot divided by 2 decks = .6 TPH per sq foot must pass thru fairly small openings.

so, screen on first glance appears to be UNDERSIZE, but you must tell me what is actually NOT HAPPENING. Do you have carryover on the top deck or carryover on the 2nd deck?

I am assuming your product is not clean enough after passing over the screen (indicating it is INEFFICIENT).

GENERAL RULE OF THUMB is:

WIDTH of screen equals Tons per hour (if wider, you can do more TPH)

LENGTH of screen equals MORE EFFICIENT or more retention time on the deck shaking the product, means cleaner product after passing over the screen. (If longer, you get cleaner product)

TOP DECK OPG: 9mm = .360" (just slightly smaller than 3/8")

2ND DECK OPG: 3.5mm = .140" (just slightly bigger than 1/8")

THIS is a tough screening job.

12 degree slope........seems to shallow until we talk more

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BED DEPTH: I assume the load is too DEEP or ganging up on the deck as it goes down. Means fines can not find their way down thru the material bed to attempt to pass the opening in the deck.

FEED TO SCREEN: VERY VERY important aspect, most people do not pay attention to. How do you put feed onto the screener?

We must make sure the material is NOT SURGE LOADED onto the screen....this will definitely make it INEFFICIENT quickly.

We must make sure we spread all the material completely sideplate to sideplate .....the full width of the screener or you will be IN PRACTICE.....screening on much smaller screen.

SPEED: 950 seems slow for this task

STROKE: how long is the stroke? if too long = inefficient, if too short = inefficient

SLOPE: 12 DEGREES, seems somewhat shallow

BED DEPTH: confirm depth of soybeans at the discharge end of the screener or the 6.6 foot mark.

We have work to do. ■

we have made vibrating scalping screens for CORN (KERNELS) where we were just scalping the STICKS, STONES, RODENTS out of the corn prior to sizing the kernels on a 10 deck 6x16 screener.

the scalper was 6x20 or 120 square feet to scalp the trash out of the corn.

ARE YOU SPREADING THE MATERIAL across full width of the screen deck? and other questions asked? ■