This chart illustrates the efficiency of a cyclone. Clearance between brush holder and collector set the holder so that the distance between its lower edge and the collector is approximately 2. General information on dust collector systems air pollution control techniques air pollution control techniques, like all environmental protection systems, have become a subject of global concern there are six 6 major technologies used for air pollution control. Whether part of a system process, used to capture harmful pollutants from furnacesboilers, to convey dry bulk product or to maintain a clean and safe work environment, dust collection systems need to function at near. Capture the dust direct the air flow through the dust. Finally, dust that is not automatically collected must be collected manually as a recurring direct labor expense. The heart of the dust collection system is the air mover and filter. A pair of new handbooks from niosh, appropriately titled best practices for dust control in coal mining and best practices for dust control in metalnonmetal mining, were developed to identify and promote engineering controls to protect mine workers from overexposures to dust. The handbook covers a wide range of materials which includes a glossary of industry terms and definitions, types and characteristics of filter media, gas and air tables. Designing your dust collection system to meet nfpastqndqrds r pqrtl garyq. Pdf dust control handbook for industrial minerals mining. Designing your dust collection system to meet nfpastqndqrds r.
Baghouse basics international association of operative. A dust collector is a mechanical device used to remove dust from an air stream. Dust abatement handbookintroductory information viii march 2010 the purpose of this handbook is to provide a practical guide offering a comprehensive overview of the departments policies and interpretations of rule 310. Designing your dust collection system to meet nfpa standards. How to make sure your dust collection system complies. Materials such as liquids, metal shavings, metal dust, screws, glass, plastic or rock can cause sparks andor damage when coming into contact with any part of the dust collector. This document designing your air handling dust system is a design guide originally written by air handling systems, and has been converted into a two page pdf document requires acrobat reader. Do not pick up anything that is burning or smoking, such as cigarettes, matches or hot ashes.
Magnehelic gauge mounted to filter, visible to operator. It is the responsibility of the end user of this equipment to take the necessary precautions to minimize the inherent ri sks associated with combustible dust. Dust collection systems are now a primary focus of inspections requircd by osiias national emphasis. Additionally, these accumulations can eventually become so large that the duct collapses under the added weight. The term best practices refers to methods that have consistently shown. Baghouse cleaning systems pressure gauge reads air tank pressure push palm button to read tank pressure magnehelic gauge measures pressure differential across filter bags the difference in static pressure upstream dirty air side and downstream clean air side of the bags pressure drop. Designing an efficient dust collection system spiral. Dust control handbook for industrial minerals mining and processing ri 9689 report of investigations2012 chapter 10. Information circular 9465 handbook for dust control in mining by fred n.
Dust control handbook dust ventilation architecture. To help manufacturers evaluate industrial dust collection equipment with much greater accuracy, the american national standards institute ansi and american society of heating, refrigerating and airconditioning engineers ashrae developed standard 1992016. A successful dust collection hood design and shape accomplishes these 3cs resulting in control of the dust emitted at the dust source. Through different processes, the dust is generated and is mixed with the surrounding air. Haul roads, stockpiles, and open areas chapter pdf available. This book skillfully guides the woodworker through all the steps necessary in the design and construction of an efficient system and provides tips for easy installation. Had one actually set up the system with 4 pipe they would have very poor pickup at the planer and they would be wasting most of the systems energy to friction loss. When examining the dust collected from the clean side of the collector during performance testing, a wide range of dust particles are noted which includes those that are in the 20 micron range and smaller. S eeing your dust collector as part of your plants dust collection system rather than as an independent machine can help you monitor the collectors performance and quickly correct any problems so it will continue to operate reliably. The impact of duct diameter on cfm oneida air systems. As the owneroperator of this unit you have an important responsibility to see that it is operated and maintained in a safe manner. S eeing your dust collector as part of your plants dust collection system rather than as an independent machine can help you monitor the collectors performance and quickly correct any problems so. Nov 09, 2012 in the handbook, best practices for dust control in metalnonmetal mining, similar best practices are offered, but tailored to the fact that greater or different types of dust exposures can occur because of the percentage of silica in the specific product being mined or processed. View and download shopsmith dustcollector manual online.
Department of health and human services public health service centers for disease control and prevention national institute for occupational safety and health pittsburgh research laboratory pittsburgh, pa june 2003. Woodstock w1050 dust collection basics book vacuum and. The dust collection system consists of a hood or air collection device, the dust collector, the motive fan and any interconnecting ductwork, stack, dampers, controls, etc. Air tight it is critical that the piping used in a dust collection system is air tight. Draw a topdown view sketch to scale of your machines and dust collector. Dust collection units and systems 5 mobile dust collector for collecting, extracting and separating dry wood and plastic dust and chips, suitable for dust collection from two machines simultaneously. Johnson workplace exposure solutions about 40 percent of combustible dust explosions neported in theus and europe overthe last25 yeam have involved dust collectors. Dust control handbook for industrial minerals mining and. The unit will require very little attention to keep it in good operating condition. The speed of air movement through a dustcollection system is critical. Operating instructions and parts manual dust collector. Overview of dust exposure assessment and control emily haas, jamie robinson, bob stein, brian holen, jay colinet, mark schultz. Leaktight laser welded seams, instead of lockform or spiral duct which badly leaks and allows debris harbors and snag opportunities.
How to design a dust collection system dust control technologies. Six keys to reliable dust collector operationpart i. To properly size your dust collector, you need to know your cfm requirements and at what static pressure your system will be operating. It is imperative that the system is air tight from the dust collector to the machinery. Foradustexplosion,twomoreelementslabeled inredarerequired. Do not use the dust collector for anything except wood dust. The intent is that this guide will be useful and used. Cdc mining handbook for dust control in mining niosh. Most of the manufacturing industry faces significant challenges in the control of dust to. This dust collector is designed and intended for use by properly trained and experienced personnel only. The first phase is sizing your duct work for adequate volume and velocity of flow for the type of dust you will be creating. Dust collectors for a safe and clean working atmosphere dust generation is one of the major problems in all kind of industries. This book is key to promoting a complete line of dust collection. Some dust created by power sanding, sawing, grinding, drilling, and.
Dust collection systems play a vital role in many commercial and industrial facilities. Corporate office and manufacturing division 691 north 400 west salt lake city, ut 84103. Never use nonshopsmith replacement parts or ac cessories. Use of collector to bailing airflow ratios for dust control. Each bag was typically 4 to 6 inches in diameter, 6 feet long, and arranged with. Dust, also known as particulate matter, is made up of solid particles in the air that consist primarily of dirt and soil but can also contain ash, soot, salts, pollen, heavy metals, asbestos, pesticides, and other materials. Dust control handbook for industrial mineral mining and processing over 2,600 copies of original edition distributed 7,700 views on website. Download and print a pdf with the tables and worksheets shown in this article. Do not use this dust collector for other than its intended use.
Dust prevention and control manual fort collins, colorado. A dust collection design guide in pdf format originally written by air handling systems july 17, 2001. It is best to do the following calculations before you purchase your dust collector or the necessary ductwork. The mac process dust collection technical handbook is a resource tool for any plant operator or maintenance personnel that work with filtration and dust collection equipment. Threepronged approach when it comes to managing dust, treat the various. Dust collection for the small shop fine woodworking. The first chapter deals solely with dust control methods, regardless of the application. On many applications, puffing can be observed from the exhaust of collectors immediately after the pulsing of each cleaning valve. This handbook describes effective methods for the control of mineral dusts in mines and tunnels. Be sure to indicate the exact location of each dust port. No dust receiver short outlet pipes dished heads poor or non existent airlocks instruments or access ports installed into cyclonic flow streams related equipment not designed for cyclonic flow inlet elbows, transitions, or other obstructions. Aerodyne environmental manufactures cyclone dust collectors. The airflow of the shopsmith dust collector is much higher than any home or shop vacuum.
Pdf design analysis of dust collection system researchgate. Haul roads, stockpiles, and open areas chapter pdf available january 2012. Drilling and blasting brian holen, mark schultz, john organiscak, randy reed, andy. Therefore, this handbook stresses the design of filtration and. Dust collection hood design hood design for industrial. Titled method of testing the performance of industrial pulse cleaned dust collectors, the standard provides a way to. Designing and sizing baghouse dust collection systems.
K st shall be computed from the maximum rate of pressure rise attained by combustion in a closedapproximately spherical calibrated test vessel of at least 20 l capacity published lists of example values are available for certain materials. Instructions and parts manual pm1900 dust collector. Dust collector venting alternatives alternative arrangement 1 condition 1 spacing between the bags handbook is a must. If the dust collector is located in a separate enclosure, it is essential to provide a source of makeup air to the shop to prevent a down draft through the flue of the heating system. Designing your dust collection system to meet nfpa. In addition to this, in manufacturing industries, a metallic dust is also generated by the operations like. This chart illustrates the efficiency of a cyclone collector with and without an optional filter bag assembly under.
Connection of several machines is possible, provided the sum of collection system mounts crosssections of the machines to be. Figure dustcollection needs by the numbers wood magazine. If you are not familiar with the proper and safe operation of a dust collector, do not use until proper training and knowledge have been obtained. Ansiashrae standard 199 improves industrial dust collection. The dust collector performance ratings should show that at your given static pressure, the cfm it will provide. While nordfab is currently unaware of any method of evaluating dust collection piping alone, the following data. Aerodyne environmental manufactures cyclone dust collectors and the dust handling valves. Designing a dust collection system in the simplest terms, a dust collection system is comprised of a ducting system to transport. There are two phases to designing your dust collection system. Contain the dust limit the volume where the dust can go. Fabric pulse jet collector early designs circa 1963. If a machine has multiple dust ports, the total cfm for the machine is the sum of all of the ports. The large air flow of the shopsmith dust collector can be observed by placing a few fingers into the end of the hose.
Wet spray systems bob franta, david gilroy dust solutions, inc. Dust collection for the small shop 40 dust collectors the wider diameter hose and large air volume created by a dust collector make it the right choice for big machines that create a lot of large, heavier sawdust particles and chips. It is advisable to place machines requiring the largest cubic feet per minute cfm of airflow closest to the dust collector. Marks standard handbook for mechanical engineers, edited by eugene avallone and theodore baumeister, mcgrawhill, new york, ny, 1996. The dust collector operates by either inertial or physical barrier means, for example, a cloth sock or fabric or sintered metal, to retain the particles while the air leaves the collector to travel to the air mover. The most difficult dust collector application occurs when the dust has a high percentage of silica and the air passing through the collector is reused. With sixty pages of concise information, including photographs and illustrations, this handbook is a must.
Baghouse applications dust control found at end of dust control system to filter air binsilo venting mounted atop bins, silos, or plenums to vent and filter air receiving used as a receiver at end of conveying line positive or negative pressure collects product and relieves filtered air. Cclone dust collectors modes 12, 16, 20, 24, 30, 36, and 44 cyclone dust collector with optional bag filter assembly fractional efficiency is the ratio of particles collected to particles entering the cyclone. Design information designing your dust collection system. Congratulations on your selection of a mcf dust filter. Air tightness in conjunction with proper piping will optimize the dust collectors performance capability. Use the cfm and static pressure to compare the performance of your dust collector.
428 1455 164 211 80 429 1197 1038 1120 68 734 1106 1364 342 178 374 496 1483 224 859 870 711 1456 988 602 1137 707 26 235 422 1153 768 689