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Screener Troubleshooting: Diagnosing and Solving Screen Problems

From Sweco
 

 
Whether your screener scalps, removes fines, or grades material, the machine's failure can have costly consequences. A torn or otherwise compromised screen can force you to reprocess material, scrap it, or even recall off-spec product. This article will present some of the common causes of such screen problems and possible solutions. Ascreener (also called a separator or sifter) is a relatively simple piece of equipment that can handle many different types of dry materials. The screener can scalp oversize material, remove fines, and divide material into two or more products with specific particle size distributions. The screener has one (or more) round or rectangular woven-mesh screen attached to a frame in an assembly called a screen deck. A motor drive and motion-inducing equipment (such as a vibrator) provide motion that helps material move through or off the screen (or screens).
Products & Services
Crushers and mills are used to reduce chemicals, materials or other products to a desired particle or aggregate size range. Search by Specification | Learn more about Crushers and Mills
Process dryers are used to remove liquids or moisture from bulk solids, powders, parts, continuous sheets or other liquids by evaporation or sublimation. Search by Specification | Learn more about Process Dryers
Screeners, classifiers and separators are used to separate materials by particle size. Search by Specification | Learn more about Separators, Classifiers and Screeners
Industrial vibrators use rotary or linear motion to provide consistent vibration for laboratory and industrial shakers, screeners and classifiers, and bins and hoppers. They are powered by an electric motor, pneumatic pistons, or hydraulic fluid. Search by Specification | Learn more about Industrial Vibrators
Specialty solids processing equipment is specialized or proprietary processing equipment for solids such as powders. Learn more about Specialty Solids Processing Equipment
Product Announcements
Cleveland Vibrator Company (The) - Coarse and Fine Material Vibratory Screeners
Cleveland Vibrator's Vibratory Screeners come in a wide range of drives that provide screening solutions for finer materials down to one hundred mesh (.0058") and coarser materials up to four inch... (read more)
Cleveland Vibrator Company (The) - Ultrasonic Fine Powder Laboratory Screeners
Cleveland Vibrator manufactures a complete line of ultrasonic, fine powder laboratory screeners and separating equipment. The HK-12 (12" diameter screen) is an effective tool for the lab or pilot... (read more)
Cleveland Vibrator Company (The) - Dual Vibratory Drive Screening System
HK Technologies, a Division of Cleveland Vibrator, introduces at the 2006 International Powder and Bulk Show a new line of ultrasonic screening systems utilizing a dual vibratory drive system. (read more)
Witte Company, Inc. (The) - Classifier Plastic Pellet - 200 Series
Witte Company plastic pellet classifiers separates "fines" and "overs" from on-spec material with such precision that nearly 50% of the plastic resin in the United States is classified on Witte... (read more)
Witte Company, Inc. (The) - Plastic Pellet Separator/Classifier
Witte plastic pellet classifiers separate "fines" and "overs" from on-spec material with such precision that nearly 50% of the plastic resin in the United States is classified on Witte equipment.The... (read more)
Sweco - Low Profile Flow-Thru Separator
The Sweco Low Profile Flow-Thru Separator allows for high capacity wet or dry scalping in a compact, low headroom design. Dual motors mounted on opposite sides allow unrestricted flow of material and... (read more)
Sweco - Bag Dumper and Screener System
Protect your process and your workers with Sweco's Bag Dumper and Screener System. The quality containment system of our Bag Dumper and Screener System effectively reduces the amount of dust particles... (read more)
Sweco - Pneumatic Sweco In-Line Sifter
The Pneumatic Sweco In-line (PSI) Sifter is used to sift dry flowing material. It can also be used to segregate smaller particles from larger particles, and to remove foreign matter. It screens dry... (read more)
Witte Company, Inc. (The) - Classifier- Dryer/Cooler
Witte Company has combined the 200 or 700 series Classifier with its Fluid Bed Dryer/Cooler to provide one unit capable of meeting several objectives. (read more)
Cleveland Vibrator Company (The) - World's Smallest Air-Piston Vibrator
Cleveland Vibrator's VM-25's ultra simple design — only one moving part (WS-2 Super Grey coated piston), size and variable frequency make it excellent for automated parts track vibration. Also,... (read more)
Topics of Interest
In any screening application, achieving top-quality product and peak efficiency requires careful screen selection. This article explains how to choose the right woven wire screen for your application. (Read More)
A 48-in (1220mm) diameter Circular Fluid Bed Dryer equipped with an integral circular vibratory screener quadrupled production of a proprietary granular chemical product, and improved quality by... (Read More)
Screen blinding occurs when the screen mesh openings are blocked or closed by the material which is being screened. Near size particles become trapped or build up on the wires effectively blocking the... (Read More)
The House-passed Homeland Security Authorization Act For Fiscal Year 2006 (H.R. 1817) improves the federal flight deck officer (FFDO) program but prohibits raising airline ticket taxes to increase the... (Read More)
Star feeders or rotary airlocks consist of a paddle wheel-shaped rotor that rotates at low rpm to dispense material into a hopper or process unit (e.g., crushers, screener, and mixers). If the blades... (Read More)
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