Dust Extraction

The PAS M unit design utilises a small motor coupled to a reduction gearbox to mechanically shake the filter bags clean once the integral top mounted fan set has been switched off.

The shaker motor and gearbox are located inside the filter unit and are unseen from outside. The M unit is a compact design and employs an envelope type filter bag within it with the dust collecting on the inside of the filter bag, therefore making access to the filter media available from the "clean air" side of the unit.

To give a wide variety of filter unit sizes, the M unit range is built around a modular design with the "single bodied" unit available in a range of filter areas from 8 to 40 square metres of filter area. The range is then built up around the duplication of bodies with the largest standard unit built as one construction being the 8 bodied 256M, which employs 256 square metres of filtration media. 

The PAS CV unit utilises compressed air for filter cleaning on an intermittent yet continuous basis whilst the fan set is still running. This allows the filter unit to run continuously for extended periods of time.

In the case of the PAS CV filter unit, the filter elements take the form of tubular filter bags held in place vertically from a horizontal filter bag mounting plate. Though the unit is not as compact as the PAS DFP or DCH unit designs, it offers an answer to a wider range of dust problems than its sister units. This is because the PAS CV filter unit can tolerate to a far higher degree dusts that, for example, are sticky, oily, and fibrous, statically charged or have an affinity to moisture. This is due to the tubular nature of the filter element design as well as the pre-separation section that is in built around the inlet arrangement of each CV filter unit.

Of course, the unit design must reflect the environment that it is to be applied to for it to work correctly and it is therefore important to let us know as many details as possible with regards to the intended application.

As a standard, the filter media is removed from the "clean air side" of the filter unit, but where height is an issue, the filter bags can be made with "dirty side" removal.

These units use a self-scrubbing action to filter the dust from the air stream within a bath of water.

These units use a "self-scrubbing" action to filter the dust from the air stream. Although not as efficient as the rest of the filter units within the PAS range, our Wet Collector offers a solution to the problem of dusts which require wet filtration to be employed, e.g. the finishing of aluminium, magnesium and titanium.

In addition, the PAS Wet Collector also offers a solution to the problem of dusts that are in themselves laden with water. PAS Wet Collectors have been successfully employed in a number of applications of this type including stone cutting and surface grinding applications where water is being employed as a coolant as well as a suppressant at the point of dust generation.

Many products are explosive in a dust form and therefore many of our dust extraction cleaning systems are fitted with explosion protection systems of some sort. It is vitally important that explosion protection systems are installed to suit the filter plants location. This is to protect the integrity of the extraction system, the production plant and the most important commodity of all, that of operatives who routinely work within the vicinity of dust filtration equipment.