Explosion-Proof Dust Removal Equipment
Many industrial processes create harmful dust that must be extracted from the air. This is done in order to comply with OSHA regulations and keep workers safe.
During an explosion analysis, a qualified company will examine the housing, hopper and inlet ducting of your dust collector to determine its ignitability and explosive potential. They will also evaluate its Kst and Pmax values.
Single phase electric
If you’re looking for a dust extractor that’s OSHA-compliant and easy to use, look no further than the iQ Power Tools iQ426HEPA. This model is super-sturdy and powerful, but at only 127 lbs it’s easily movable. It also features a corded tool actuation feature that automatically starts the machine when you switch on your power tool. This helps prevent dust from blowing out of the machine, and it’s a great way to stay compliant with OSHA requirements.
It is necessary to design and select proper explosion venting restraints and explosion-proof devices for the dust collector and air duct in a dust environment explosion hazardous area. The inert gas or powder medium charged into the dust collector should be selected according to the dust explosion characteristics. Moreover, the monitoring device for oxygen content in the dust collector box should be continuously monitored and set to alarm when the concentration is higher than the preset value. The starting and interlocking of the electrical equipment, monitoring device, alarm and control devices installed in the dust explosion hazardous area should meet the requirements of GB 12476.1 and GB 12476.2.
The most common cause of electrical accidents in single-phase operation is poor contact between electrical switch contacts caused by dust accumulation. This may result in unstable electronic controls and equipment failure. Besides this, the heat generated by the motor can lead to overheating and fire. Therefore, it is important to remove the accumulated dust in the ventilation pipe and on the switch contactors to avoid this problem.
Three phase electric
The three phase electric explosion-proof dust removal equipment is designed for use in explosion-proof dustremoval equipment areas where combustible dusts may exist. It can be wall mounted and operates on 230 to 480 V AC electrical current. It features three spark-resistant cast aluminum blades and a heavy-duty 14 gauge welded frame. It also has a TEFC motor and a heavy-duty rotary switch to control operation. This is a very powerful and efficient machine that can run continuously for 24 hours.
A recent disaster caused by a combustible dust explosion in a polishing workshop was attributed to improper explosion venting and protection of the dust collection pipeline (Li et al., 2019). To prevent this type of accident from occurring, the dust-explosion protection device must be installed correctly in order to reduce the risk of an explosion and protect workers. The size, configuration, and static activation pressure of the pressure relief panel are important factors that affect the explosion venting process in powder-related equipment.
To avoid a vacuum explosion in a three-phase pad-mounted transformer, it is crucial explosion-proof dustremoval equipment that the airbox and cabinet are kept clean. Every two years, a moist towel can be used to wipe the surface of the airbox and cabinet. The oil tank and high-pressure and low-pressure boxes must also be cleaned regularly. In addition, the electrical connections of the electrical circuits and all monitoring devices, alarms, and controls should be grounded according to GB 50058.
Immersion separators
Combustible metal dusts present a fire and explosion hazard when dispersed in air. This material is usually found in Class II locations and is classified as a dust ignition hazard (DIH). In addition, it requires a special collection system with additional safeguards to prevent an explosion. These include a safety switch, an explosion isolation flap valve and a chemical agent that suppresses the flames in the ducting and prevents the explosion from spreading throughout the facility or workshop.
To ensure the safety of your employees and equipment, you can use an Explosion Proof industrial vacuum to collect combustible metal dusts from your work space. This system is specially designed to handle combustible materials and is fully NRTL 3rd party certified for use in hazardous Class II, Group E environments. This is an ideal solution for factories and workshops that need to safely recover combustible metal dusts from the environment.
Another option is an Immersion separator, which is also NRTL 3rd party certified for Class II, Group E hazardous locations. This type of vacuum collects combustible metal dusts and renders them inert in an inert liquid bath. The equipment is also available in an NFPA 484 immersion version that meets the NFPA 484 requirements for the recovery of aluminum and magnesium dusts in hazardous locations.
Filter cleaning indicator
Commercial manufacturing processes and other industrial machines generate harmful dust that needs to be collected and disposed of. This is why many industrial workshops have air cleaning systems that collect and purify the dirty tainted air in the work area. These systems also meet OSHA regulations requiring indoor air quality and safety. However, some types of industrial dust can combust or explode in the wrong type of air cleaner, which can cause expensive damage and pose dangerous risks to workers.
To avoid this, companies can install safe dust collectors with explosion isolation flap valves, which prevent the spread of an explosion within a factory or workshop. These systems can be installed in the inlet or outlet ducting, and are designed to close within milliseconds of detecting an explosion hazard. They can also be equipped with a chemical agent that suppresses the explosion and protects the ducting.
Explosion-proof dust collection equipment is necessary for any workshop or factory that produces combustible dusts. Any dust that is organic in nature, including wood, flour, sugar and other natural materials, as well as some metals, can combust or explode when it mixes with air. Some combustible dusts can be assumed to be explosive and must undergo a Kst value test, while others require a more thorough testing procedure. These tests must be performed by a notified body and documented on file.
