Need Reinforcing Or New Design
Is there a manufacturer name on this equipment?
George
Sounds like a mechanical conveyor to me. ■
Re: Vibrating Screen - Flex Joints
I am not at work to give U the screen details - the screen oscillate in a circular motion at the feed end (as it is connected to a offset cam from a gearbox)...at the discharage end..there are 2 mech loinks which make the feed end move linarlly back and forth,
It is a screen - screens splits feed to oversize and underside.
The feed and 2 discharge chutes move about 50mm horizontally - as this is the issue with the flex socks to the fixed chutes.
The screen is spported by wire ropes to take out vibrations to the support structure.
It is not the screen that concerns me (other than the saefty hazards from the nip points and open rotating parts) - it is getting longer life from the flex joints
Thanks
James ■
Re: Vibrating Screen - Flex Joints
I cannot completely visualize your problem because drawing / sketch is not available. It seems you have got a piece of flexible chute connecting moving screen and fixed chute. Only suggestion / comment that can be made is that, the flexible chute should always remain loose within the motional limits and its connection at both the ends should be such that it should not put sharp strain on the canvass, rubber as the case may be. That is its flexing movement should be on the rounded surface. I suggest you to analyse the change in shape as will occur during motion from one end to other end (in millisecond steps) and choose / decide the shape size in such a manner that the bending angle (crease) should be bare minimum.
Regards,
Ishwar G Mulani.
Author of Book : Engineering Science and Application Design for Belt Conveyors.
Advisor / Consultant for Bulk Material Handling System & Issues.
Email : parimul@pn2.vsnl.net.in
Tel.: 0091 (0)20 25882916 ■
Rotex Screener?
Hello James: Thanks for getting back on this. Sometimes we have to just get a little more detail to figure out if we are both on the same song sheet.
Take a look at this pic.........I believe you are describing the flexible connections for the feed and discharge spouts from the ROTATING OR OSCILATING SCREENER BOX......which is side to side sweeping action......
The connectors must be loose enough to allow the free and full movement of the screener box side to side in the case without restricting or exerting damage to the FLEX TUBES by being too short.....causing them to rip or generally not last too awful long.
THE MATERIAL is usually a light gauge plastic with a wire reinforcing coil .........
FORUM PARTICIPANTS: Is their someone out in the big world out there who can suggest a better design or material for the FLEXIBLE FEED TUBE CONNECTORS HERE.
http://www.rotex.com/download/slidin...connector.pdf
Let see what happens JAMES.
If this is not the beast........keep talking....we will identify it....no problem.
TKS......George Baker - Moderator
Attachments
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Re: Vibrating Screen - Flex Joints
George,
These are the flex joints . . .we have a oscilating type screen - sideways movement - brute force type with a displacement of about 50mm sideways at both ends.
The lenght of the flex joint is about 300mm - I presume to avoid too much stretch of the joint when moved to the side by +25mm.
They crack vertically in the rubber - light weight and Linatex..
The feed chute is angled as well but there does not seem to be a material impingement wear on the flex joint.
The joint is failing from flex fatigue.
Sorry that I do not have a photo nor drawing
Cheers
James ■
Re: Vibrating Screen - Flex Joints
PS - Looking at the Rotex webpage - the screens are Rotex but without the special inlet and discharge connections.
How good are these sliding joints??
Cheers
James ■
Sliding Joints
Hi James: A comment on how good these special sliding joints are would have to come from the ROTEX factory folks.
MY OPINION: I would contact factory through the link on my last thread and ask their engineer dept to comment and most importantly get them to direct you to a proven satisfied actual customer in the field.
This should clarify its success nicely.
HOPE THIS HELPS.
Cheers..........George ■
Vibrating Screen - Flex Joints
Hi All,
We have some oscillating vibrating screens that are driven by a vertical eccentric cam.
The throw is about 50mm...different directions at feed and dischahrge end.
Screens handle 2mm granular material.
The feed and discharge chute transfers feature about 300mm long flex chutes of a simple tube/pipe arrangement.
The life of these are not great - have had as bad as one day - get cracks and holes in the tube/sleeve.
The sleeve may not be long enough to cater for the +/-25mm offset movement.....
Any suggestions...???
Thanks
James ■