Wirecloth Tensioning
THE concept is this and the practical as well:
Wirecloth should always be kept, what we call in this industry, DRUM HEAD TIGHT. VERY TIGHT. the reason is as follows:
We must stretch or break the back of the wirecloth over the ARCH of the deck on a screen which has a cambered deck setup. What we are doing is stretching or tightening the wirecloth over the camber of the deck, down tightly onto the rubber covered support rails to ensure NICE TIGHT WIRECLOTH.
IF left loose, the wirecloth will "WORK" up, down, back, forth ....kinda like bending a hairpin or paperclip back and forth a number of times.....THEN, IT BREAKS.
Tight wirecloth, screens more efficiently, lasts longer and is proper. It should be installed, run for an 8 hr shift , then take a 1/4 turn more tighteness on the bolts...why? because wirecloth is WOVEN, and the weave can loosen up a titch after the first shift of operation.
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If you are using a ROTEX or similar type of vibration machine, those RINGS are pretensioned in their VIBRO RINGS.....to ensure good screen efficiency.
so the rule is: LOOSE IS BAD, TIGHT IS GOOD.
Keep on tightening........Stretch er.........we are outta here!!! ■
Mesh Tension
dear all please give your view on the following.
while my last visit at site for servicing one maintenance person from the user company told me if mesh is very fine its tightening tension should be little less as if compared to corse mesh.
the life of fine mesh if keep with slightly less tension it will absorb the shock coming from the feed material.
but what i am thinking it also reduce the capacity of screening as bed depth get increased due to material suspension on mesh.
the screening product is powder used for dying the cloths.
please give your valuable opinion. ■