In the finishing industry, there exists a real link between safety and quality-especially with regards to spray booths, which can run the risk of causing fire if not properly maintained. Equipment for dust collection is strategically made to meet specific needs with regards to performance, like airflow velocity; fan, filter and burner capacity; and safety related to fire prevention and operator wellbeing.
However, after the manufacturer ships the machine, installation, operator training and maintenance become the responsibility in the finisher. Therefore, it is advisable to give both Portable Paint Spray Booth and associated processes a comprehensive review for fire safety hazards along with other incidents which could occur.
Dust Collection – There are 2 sides of dust collection: quality and safety. A high quality finish will be the direct reaction to adequate removing of airborne particles that could contaminate finished surfaces. This contamination causes rejects or rework of item that leads to lost profits.
It’s not simply surface finish that particle build-up can affect, though. Or even cleaned, particles can migrate to areas where operators might not have proper breathing protection, and fire becomes a real hazard. Sufficient airflow is essential.
The very best factors behind 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 end result is to accumulate the dust using 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 in the booth of 125 to 150 FPM. If properly filtered, this air could be recycled into the facility. Clean air dilution ratios for any facility also need to consider heat, off-gases, and odors from ancillary processes including sanding or grinding.
Additionally, doors or pressurized plenums can be used to contain dust. A smart investment in containment will be reflected in less cash used on cleaning and correcting finish rejects.
Spray Finishing Systems and Booths – Auto Baking Oven have numerous their particular specific requirements for safety and quality. First, sufficient and laminar airflow is needed in order that the exhaust can capture overspray and pull it to the filtration systems, which may be either a dry filter or a water wash. To get rid of particulate from the air, the proper filter media or chamber is essential. Then, the fresh air supply needs to be not only clean, but also in the correct temperature. Modern-day coatings might also require humidity control. Not to mention, all equipment needs to be properly grounded.
The very best fire prevention may start with knowledge of so what can cause a fire in a spray booth. In a conventional system, leading causes of fire include:
using spark-producing equipment such as cutting, welding or grinding nearby the spray area; friction, in most cases due to overheated bearings on the exhaust fan, or by rubbing of exhaust fan blades against overspray deposits on the wall from 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 inside the spray area, failure to fully discharge equipment before cleaning, pinhole leaks inside the paint tubing for the spray gun, other causes comparable to conventional systems such as smoking, cutting and welding.
Most of these circumstances are entirely preventable, and many of them connect with maintenance in the spray booth, an issue called outside in Chapter 10 of the NFPA 33: Standard for Spray Application Using Flammable or Combustible Materials. The section covers general maintenance requirements, elimination of combustible deposits, maintaining high-pressure hoses, waste containers, clothing and cleaning operations amongst other great information.
When spray booths and finishing equipment are installed, they meet the criteria for a quality job the first time through. It’s approximately the shop to maintain the device clean so it meets that perfect, first-time performance each and every time. The device should allow for: proper airflow to get overspray in to the filters as opposed to on the booth floor, and proper filtration to keep contaminants from the air but in addition to prevent overspray buildup on the fan or in the exhaust duct.
For excellent prevention standards, keep Used Car Paint Spray Booths, modify the booth filters regularly, check the fan and stack for buildup, guard against static electricity and study 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 advice is always to keep the region clean and provide adequate intake air. Remove combustible deposits, and also to eliminate the risk of spontaneous combustion, make sure you hold the correct exhaust volume and purge time. Keep solvent load within the oven underneath the “Lower Flammability Level,” and purge the oven before startup.
The same considerations for airborne contaminants ought to be put on oven maintenance. Filtered recirculating air or filtered air seals may be critical, and both should be considered.
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 reduce stirring or tracking in dirt. Intake and mkmozc filters can be purchased in many temperature ranges to fit any process.
Ovens, when used for whatever they are designed are for, are a very safe operation since many solvents are evaporated along with other airborne contaminants and combustible deposits shouldn’t be present. It’s very dangerous when a convection oven is utilized for other means, such as 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