<ul><li>SMICO… </li></ul><ul><li>Manufacturing Peace of Mind. </li></ul>
History <ul><li>Began early 1900s </li></ul><ul><li>SMICO formed in 1946 as Southwest Mill Industrial Equipment Company </...
Key Contacts <ul><li>Erick Heald – Sales Manager–  [email_address] </li></ul><ul><li>Randall Stoner – Head Engineer –  [em...
Common Bulk Material Screeners
Common Bulk Material Screeners
Common Bulk Material Screeners
What is Screening? <ul><li>A mechanical process which separates particles based on their size. </li></ul>
Types of Screening <ul><li>Scalping/Oversize Removal:  Separating Agglomerated lumps from ground materials such as cake mi...
Screening Action Types <ul><li>Elliptical </li></ul><ul><li>Linear </li></ul><ul><li>Circular </li></ul><ul><li>Gyroscopic...
Elliptical Motion <ul><li>Most Commonly generated by brute-force, counterweighted drive. </li></ul><ul><li>Used with incli...
Linear Motion <ul><li>Generated by Dual Shaft Inertia Coupled Counterweights or Vibrating Can Motors. </li></ul><ul><li>Us...
Circular Motion <ul><li>Generated by vibrating motor mounted under screen. </li></ul><ul><li>Best used in sifting or scalp...
Gyroscopic Motion <ul><li>Motion is created by counterweight or motor driven gear system. </li></ul><ul><li>Low amplitude ...
Centrifugal Motion <ul><li>Motion created by auger fed, shaft driven paddles. </li></ul><ul><li>Highly efficient system. H...
Material Classifications <ul><li>Granular and free-flowing:   Salt, Sugar, Pellets </li></ul><ul><li>Sluggish Powder 100-3...
Matching Material to Motion  <ul><li>There is not one ideal or perfect screening motion which is best in all applications....
Matching Material to Motion  High Capacity – Horizontal Circular, Horizontal, Gyroscopic Dewatering 5 High Capacity – Incl...
<ul><li>SCREEN TEST RESULTS </li></ul>
Fine Powder  Horizontal Screener
De-Watering  Horizontal Screener
Classifying/Sizing Inclined Screener
Scalping Powder  Flow-Through Screener
Free-Flowing Powder  Inclined Screener
Questions <ul><li>??? </li></ul>
Thank You <ul><li>Please Contact SMICO for Screening at: </li></ul><ul><li>500 N. MacArthur Blvd </li></ul><ul><li>Oklahom...
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Explaination of Vibratory Screening Action

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www.smico.com - This is a detailed look at the types of screening action available to the users of mechanical, bulk material, vibratory screeners.

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Explaination of Vibratory Screening Action

  1. 1. <ul><li>SMICO… </li></ul><ul><li>Manufacturing Peace of Mind. </li></ul>
  2. 2. History <ul><li>Began early 1900s </li></ul><ul><li>SMICO formed in 1946 as Southwest Mill Industrial Equipment Company </li></ul><ul><li>Changed to SMICO in 1956 </li></ul><ul><li>Privately Held Company </li></ul><ul><li>Specializes in Brute Force Driven Screens </li></ul><ul><li>Focused on Aggregates/Minerals to Food/Milling Applications </li></ul><ul><li>Can Custom Engineer Screening Solutions from Time-Tested Designs </li></ul>History
  3. 3. Key Contacts <ul><li>Erick Heald – Sales Manager– [email_address] </li></ul><ul><li>Randall Stoner – Head Engineer – [email_address] </li></ul><ul><li>Frank Ashcraft – Parts Manager – [email_address] </li></ul><ul><li>Bill Springmeyer – Head Service Tech – [email_address] </li></ul>
  4. 4. Common Bulk Material Screeners
  5. 5. Common Bulk Material Screeners
  6. 6. Common Bulk Material Screeners
  7. 7. What is Screening? <ul><li>A mechanical process which separates particles based on their size. </li></ul>
  8. 8. Types of Screening <ul><li>Scalping/Oversize Removal: Separating Agglomerated lumps from ground materials such as cake mix or soybean meal. </li></ul><ul><li>De-dusting/Fines Removal: Removing fines from animal feed before bagging. </li></ul><ul><li>Sizing/Grading: Sizing Almonds for grading purposes. </li></ul><ul><li>De-Watering/Liquid-Solids Separation: Separating Potatoes from water in a canning operation. </li></ul>
  9. 9. Screening Action Types <ul><li>Elliptical </li></ul><ul><li>Linear </li></ul><ul><li>Circular </li></ul><ul><li>Gyroscopic </li></ul><ul><li>Centrifugal </li></ul>
  10. 10. Elliptical Motion <ul><li>Most Commonly generated by brute-force, counterweighted drive. </li></ul><ul><li>Used with inclined screen to facilitate product conveyance. </li></ul><ul><li>Adjustable stroke allows for fine or course applications. Higher amplitude lends itself to coarse separations of dense material. </li></ul><ul><li>One of the quickest methods of Mechanical Screening </li></ul><ul><li>Low Maintenance Costs </li></ul><ul><li>Screening “longs” can be an issue but perf-plate can reduce issues. </li></ul><ul><li>Can handle volumes of over 1200 TPH. </li></ul><ul><li>Capable of moving product with or against flow. </li></ul><ul><li>Low to medium capital cost. </li></ul>Vertical Motion & Flow of Material
  11. 11. Linear Motion <ul><li>Generated by Dual Shaft Inertia Coupled Counterweights or Vibrating Can Motors. </li></ul><ul><li>Used with horizontal screen. </li></ul><ul><li>Adjustable stroke allows for fine or course screening. Very effective on light, fine or friable materials. </li></ul><ul><li>Uphill configuration for dewatering applications. </li></ul><ul><li>Screen blinding can occur, ball decks are often necessary for near-sized or fine products. </li></ul><ul><li>Screening applications to 325 mesh are feasible </li></ul><ul><li>Creates up to 6 G’s of force so it remains very efficient. </li></ul><ul><li>Volumes of over 1000 TPH </li></ul><ul><li>Medium capital cost. </li></ul>
  12. 12. Circular Motion <ul><li>Generated by vibrating motor mounted under screen. </li></ul><ul><li>Best used in sifting or scalping applications involving free-flowing materials. </li></ul><ul><li>Very low to no amplitude stroke. </li></ul><ul><li>Lower capacity and efficiency compared to horizontal/inclined screens. </li></ul><ul><li>Low maintenance and modular design are ideal for food-grade applications. </li></ul><ul><li>Can degrade friable materials due to low amplitude “grating” action. </li></ul><ul><li>Low capital cost </li></ul>Horizontal Motion & Flow of Material
  13. 13. Gyroscopic Motion <ul><li>Motion is created by counterweight or motor driven gear system. </li></ul><ul><li>Low amplitude is ideal for screening “longs” and lightweight material. </li></ul><ul><li>On average about 10-20% less efficient than linear or elliptical motion. </li></ul><ul><li>Can degrade friable materials with “grating” action. However lack of vertical motion can reduce product breakage. </li></ul><ul><li>Motion does transfer to structure causing higher than normal project costs. </li></ul><ul><li>Can be costly to maintain and service. </li></ul><ul><li>Good for use where headroom clearance is minimal. </li></ul><ul><li>High capital cost. </li></ul>
  14. 14. Centrifugal Motion <ul><li>Motion created by auger fed, shaft driven paddles. </li></ul><ul><li>Highly efficient system. High efficiency to footprint ratio. </li></ul><ul><li>Best used for free flowing scalping & sizing applications. </li></ul><ul><li>Can be used to simultaneously break lumps while screening friable materials. </li></ul><ul><li>Not useful in applications where product degradation is a concern. </li></ul><ul><li>Multiple separations are not possible. </li></ul><ul><li>Design can increase screen cloth wear times and cause higher rates of oversize contamination. </li></ul><ul><li>Medium to high capital cost. </li></ul>
  15. 15. Material Classifications <ul><li>Granular and free-flowing: Salt, Sugar, Pellets </li></ul><ul><li>Sluggish Powder 100-300 mesh: Flour, Starch </li></ul><ul><li>Adhesive Powder: Foundry Sand, Pigments </li></ul><ul><li>Fluidized Powder (-325): Confectionery Sugar </li></ul><ul><li>Fibrous or Flaky: Flaked Grain, Bagasse </li></ul>
  16. 16. Matching Material to Motion <ul><li>There is not one ideal or perfect screening motion which is best in all applications. </li></ul><ul><li>The most common and most costly mistake in screening is matching the wrong motion to a particular application. </li></ul><ul><li>Screen sizing and selection is as much art as it is engineering. </li></ul><ul><li>Real world data is the only true measure of screen performance in any given application. </li></ul>
  17. 17. Matching Material to Motion High Capacity – Horizontal Circular, Horizontal, Gyroscopic Dewatering 5 High Capacity – Incline Incline, Horizontal, Circular, Gyroscopic Coarse Sizing ¼” and Larger 4 Light – Gyroscopic, Circular Dense – Horizontal, Incline Incline, Horizontal, Circular, Gyroscopic, Centrifugal Intermediate Sizing ¼” to 50 Mesh 3 Light – Circular, Gyroscopic Dense – Horizontal, Centrifugal Circular, Centrifugal, Horizontal, Gyroscopic Fine Sizing Below 50 Mesh 2 High Capacity Non Friable – Centrifugal High Capacity Friable – Incline Incline, Horizontal, Grizzly, Gyroscopic, Centrifugal Scalping 1 Best Screen Choice Possible Screen Choice Application Basic Screening Evaluation. Please consult SMICO for more information.
  18. 18. <ul><li>SCREEN TEST RESULTS </li></ul>
  19. 19. Fine Powder Horizontal Screener
  20. 20. De-Watering Horizontal Screener
  21. 21. Classifying/Sizing Inclined Screener
  22. 22. Scalping Powder Flow-Through Screener
  23. 23. Free-Flowing Powder Inclined Screener
  24. 24. Questions <ul><li>??? </li></ul>
  25. 25. Thank You <ul><li>Please Contact SMICO for Screening at: </li></ul><ul><li>500 N. MacArthur Blvd </li></ul><ul><li>Oklahoma City, Oklahoma 73127 </li></ul><ul><li>P: 405.946.1461 </li></ul><ul><li>F: 405.946.1472 </li></ul><ul><li>[email_address] </li></ul>

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