Within the finishing industry, there exists a real link between safety and quality-especially in terms of spray booths, which can run the potential risk of causing fire if not properly maintained. Equipment for dust collection is strategically created to meet specific needs with regards to performance, including airflow velocity; fan, filter and burner capacity; and safety related to fire prevention and operator wellbeing.
However, after the manufacturer ships the gear, installation, operator training and maintenance become the responsibility from the finisher. Therefore, it is advisable to give both Chinese Furniture Spray Booth and associated processes a thorough review for fire safety hazards as well as other incidents that could occur.
Dust Collection – There are 2 sides of dust collection: quality and safety. An exceptional finish is definitely the direct reaction to adequate removing of airborne particles that may contaminate finished surfaces. This contamination causes rejects or rework of product that brings about lost profits.
It’s not only surface finish that particle build-up can impact, though. Or even cleaned, particles can migrate to places that operators may not have proper breathing protection, and fire gets to be a real hazard. Sufficient airflow is vital.
The top reasons for fire in dust collection systems include: static electricity discharge, exothermic reaction because of chemical reaction of collected dust,
cutting or welding too near the area.
The bottom line is to gather the dust having a well-designed dust collection system that incorporates a smart layout and balanced air replacement. As suggested through the National Fire Prevention Association (NFPA): “Air flow has to be carefully considered.” Criteria for dust collection processes usually include air velocity within the booth of 125 to 150 FPM. If properly filtered, this air could be recycled back into the facility. Clean air dilution ratios for a facility should also consider heat, off-gases, and odors from ancillary processes such as sanding or grinding.
In addition, doors or pressurized plenums can be used to contain dust. An investment in containment will likely be reflected in less money spent on cleaning and correcting finish rejects.
Spray Finishing Systems and Booths – Mini Spray Booth have several their very own specific requirements for safety and quality. First, sufficient and laminar airflow is necessary so the exhaust can capture overspray and pull it for the filtration systems, which is often either a dry filter or perhaps a water wash. To eliminate particulate through the air, the proper filter media or chamber is important. Then, the new air supply needs to be not merely clean, but also at the correct temperature. Modern-day coatings may also require humidity control. And naturally, all equipment must be properly grounded.
The very best fire prevention may start with knowledge of what can result in a fire in a spray booth. In a conventional system, main reasons for fire include:
using spark-producing equipment such as cutting, welding or grinding close to the spray area; friction, generally brought on by overheated bearings on the exhaust fan, or by rubbing of exhaust fan blades against overspray deposits on the wall in the duct; arcing electrical equipment;
spontaneous combustion; and discharge of static electricity.
In electrostatic spray operations, leading causes of fire include: ungrounded or improperly grounded objects in the spray area, failure to completely discharge equipment before cleaning, pinhole leaks inside the paint tubing for the spray gun, other causes similar to conventional systems such as smoking, cutting and welding.
Many of these situations are entirely preventable, and some of them relate with maintenance inside the spray booth, an issue called out in Chapter 10 of the NFPA 33: Standard for Spray Application Using Flammable or Combustible Materials. The section covers general maintenance requirements, removal of combustible deposits, maintaining high-pressure hoses, waste containers, clothing and cleaning operations amongst other very good information.
When spray booths and finishing equipment are installed, they meet the criteria for a quality job the very first time through. It’s approximately the shop to keep the program clean to ensure that it meets that perfect, first-time performance each and every time. The system should enable: proper airflow to obtain overspray in to the filters instead of on the booth floor, and proper filtration to maintain contaminants from the air but additionally to avoid overspray buildup on the fan or perhaps in the exhaust duct.
For excellent prevention standards, keep Spray House, alter the booth filters regularly, look at the fan and stack for buildup, guard against static electricity and browse the NFPA 33.
Paint Curing or Drying Ovens – Infrared and convection ovens employed for paint curing or drying are another obvious fire hazard inside the shop. Again, the best recommendation would be to keep the location clean and provide adequate intake air. Remove combustible deposits, and to eliminate the risk of spontaneous combustion, ensure you have the correct exhaust volume and purge time. Keep solvent load within the oven beneath the “Lower Flammability Level,” and purge the oven before startup.
The identical things to consider for airborne contaminants should be placed on oven maintenance. Filtered recirculating air or filtered air seals could be critical, and both should be thought about.
Airflow for ovens should have sufficient exhaust to evacuate solvent vapors and smoke. Also, analyze product conveyance and design the airflow of the oven to lower stirring or tracking in dirt. Intake and mkmozc filters are available in many temperature ranges to match any process.
Ovens, when utilized for whatever they are made are for, certainly are a very safe operation as most solvents are evaporated and other airborne contaminants and combustible deposits shouldn’t be present. It’s very dangerous when a convection oven can be used for other means, like to evaporate solvents by the drum-load, harden booth filters or ‘treat’ other waste deposits.
SD Longxiang with a professional team for designing and manufacturing spray booth, we try to support the products and service packages for every customer with their customized request, we are not only supply the products, we supply are designer for your painting and spraying works, we supply the solution that helps you work smarter, save time and money and achieve outstanding results, now and in the future.
Shandong Longxiang Machinery Co., Ltd.
Address: Longyao Industrial Park, Xinzhai Township, Zhangqiu district, Jinan city, Shandong, China
E-mail: [email protected]