Set Screw
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 NEW 170 PCS PANEL CLIP AND SCREWS ASSORTMENT KIT SET SAE FREE SHIPPING $9.99 Time Remaining: 2d 1h 45m Buy It Now for only: $11.99 |
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Set Screw
summary twin screw extruder
(a) Field of the Invention
The present invention relates to a food processing machine applicable to a slurry raw material, and more particularly to a counter-rotating twin screw extruder structure with two oppositely and alternately disposed screw blades.
(b) Description of the Prior Art
In food industry, paste-like material, such as pet food, feeds or human foods, is utilized the co-rotating twin screw extruder which can effectively heat the starch in the material, appropriately mix, and then extrude the material to form the finished products.
Referring to FIG. 1, the co-rotating twin screw extruder comprise with two symmetrical screws driven by motor either directly or indirectly in the barrel casing. The two screws can rotate synchronously in the same direction, either clockwise or counterclockwise. The screw surface set with alternating screw flight. As shown in the drawing, when the co-rotating twin-screw extruder operates, the two screws 1 are all set in clockwise rotation so that material 2 and the helical blades of the screws 1 can rub each other to generate thermal energy through mechanical friction, which continuously heats the mixed material 2 and thus enhance the material cooking by the setting. This kind of co-rotating twin-screw have been widely used in the food industry and in feed manufacturing.
However, the co-rotating twin screw extruder device has several drawbacks in the operation:
(1) Since in the design of the screws 1 of the co-rotating twin screw extruder, the two forwardly and alternately disposed screw blades convey the raw material 2 to be agitated and extruded and the heating source is the friction between the raw material 2 and the screws 1, the production of the mechanical frictional thermal energy cannot be controlled, and extra thermal energy may be produced by unnecessary mechanical friction, whereby this kind of device may not be suitable for materials that do not need heating or cannot be heated.
(2) Due to the reason set above, the conventional co-rotating twin screw extruder cannot precisely set the mechanical friction induced thermal energy inside a desired working zone and may lead to deficiencies of undesired wearing of the helical blades and increase of load of the motor (increased power consumption).
(3) The conventional co-rotating twin screw extruder employs a gear box to raise the torque induced in the rotation thereof and the gear box requires a large number of gears to ensure shafts to rotate in the same direction, so that the gear assembly is complicated and additional cost of design is needed, and the great number of gears arranged inside the gear box comparatively increases the amount of thermal energy generated, whereby extension of lifespan must be realized through an additional external cooling system, which causes additional consumption of electrical power and also increases the cost of potential maintenance.
Thus, the above discussed drawbacks of the conventional co-rotating twin screw extruder cause certain troubles to the manufacturers so that such drawbacks must be overcome.
About the Author
The present invention relates to a food processing machine applicable to a slurry raw material, and more particularly to a counter-rotating twin screw extruder structure with two oppositely and alternately disposed screw blades.
Hardware project calls for: 1/2" EMT Conduit Set Screw Male Adapter. What is this?
A hardware project calls for: 1/2" EMT Conduit Set Screw Male Adapter. It offers no photograph or illustrations, however and I can not seem to find one at Home Depot. Does anyone know what this part is, what it looks like and where I could find one? Here's the webpage I got it from:
http://www.studiolighting.net/diy-c-stand-light-stand-from-steel-pipe/
Just do a "CTRL+F" and type 'EMT set screw male adpater' into the search box and it will show you the two locations on the page where he talks about using that part. The first instance of that term is the parts list (what I'll need to buy). The second instance of the term is where he tells you to use it and there is a nearby photograph which possible includes the part in its post assembled state.
Thanks mate!
If you a CTRL F and search for EMT the 1/2 inch EMT set screw adaptor is just to the right of the eye bolt labeled: 1=5/16" x 3" eye bolt (or 5/16 x 18 knob if you have one)
Hope this helps...
You will notice that it has a screw in the lower half. That is the set screw.
Set Screw Problem