Permanent Blasting Facilities
Fixed dust collection units are typically installed into blasting chambers, rooms or consistent single site installation projects that produce dust and fume extraction for multiple processes. From coating application and blast surface preparation, fabrication, repair shops, manufacturers and general facilities processes that produce high levels of hazardous dust or chemical fumes.
Single site dust collection units typically run off electric motors setup into a different configuration than the mobile dust collection units.
Dry Type Dust Collectors
Dry type dust collectors use a cartridge filter with a large surface area to provide excellent airflow coupled with fine filtration. A unique compressed air powered system known as ‘Sonic Impact’ is employed to shake and remove dust from the filter and this maintains filter efficiency and airflow performance.
The ‘Sonic Impact’ system incorporates a sequential timer which activates a solenoid valve sending a “shockwave” through the element or cartridge so that dust which has accumulated on the outside will be released and fall away, even while the dust collector is operating. The pulse will continue for several cycles after the dust collector fan is turned off to ensure cleaning is complete.
Today, dry type units use elements not unlike large truck type air filter elements, and whichever filter medium is used, the cost of replacement needs to be considered when ascertaining service life. Fines and dust are collected in a waste drum and need to be disposed of thoughtfully, this can be a hazardous job, but is made easy via our simple lever-action drum release system.
Dry type units are better suited to situations where dust concentrations are lower, hence they are used in blast rooms using steel or chilled iron and not where high levels of dust are common from the items being blasted, i.e. From heavily rusted steel etc. Increasing the pulse frequency will help if dust generation is increased.
Dry type systems are suitable for most situations.
Wet Scrub Type Dust Collectors
Not to be confused with water spray type units, the wet scrubber passes the dusty air below water level, literally scrubbing the air. The dust is entrained in the water and after passing a series of baffles that removes the moisture before being exhausted to atmosphere.
Wet type units can cope with large volumes of dust and because there are no elements to clog, air flow remains fairly constant which is always important. In other words, the water can become extremely dirty before any appreciable difference occurs. A small amount of detergent added to the water helps prevent solidifying of steel dust in the water. Clean out is easiest if done regularly, and a truck with heavy duty suction facilities used on water tanks or septic tanks makes a clean-out easier. Manual cleaning may be necessary to get the last portion out.
Running (power) costs are usually similar to dry type units.