Filters are used for direct mounting at elevators, conveying machines, batcher and daily capacities in all the valves with small volume of air.
In this section:
Filter is suitable for direct mounting at elevators, conveying machines, batcher and daily capacities in all the valves with small volume of air. It can be used as a component of larger system of dust control for provision of correspondence to all the necessary healthcare regulations and safety measures.
Typical branches where the filters are used:
and many others...
Two tested types of filtering material are used for provision of high productiveness, continuous cleaning. Range of filtering area is from two square meters up to ten meters.
|Elements from polyester bonded fabric||Cloth filter bags|
The filter consists of two separate versions for vertical and horizontal mounting. Vertical device has inclined batcher for prevention of product stoppage in housing.
There are some options for application of filters in dangerous medias:
- static discharge devices
- ventilator which doesn’t cause sparks
- engines and controllers applied for hazardous areas.
- alternative filtering material
Ability to fully delete dust:
Independent source of dry compressed air of 3,8 bar is required for dust filters.
Collector is provided with safety valve and manometer. Safety valve is preliminarily set at 6.9 bar (100 pounds/inch2 man.). Additional system relief device will be required if volume of air is bigger than nominal of the relief device, this relief device can be supplied on demand of a customer (25 dm3/sec at 6.9 bar).
Air contaminated with dust is supplied to the chamber where there are filtering elements в, air bumps against all the external surfaces. Dust layer is collected outside the elements while air pass through the medium. Clean air comes out of the external collector of every filtering element to the cleaned air chamber of and from there it is issued through the ventilator into the atmosphere.
At regular intervals which are set by controller, every filtering element in turn accepts short stroke of compressed air from corresponding jet pipe. Jet pipe is provided with set of small diameter jet holes which are placed near the external collector of every filtering element. These holes have optimum size and distance from filtering element, in consequence of which large volume of outside air is pushed out by every flow of compressed air. Due to it short powerful reverse blow of air through filtering element is happened, what destroys collected dust layer.
In a similar manner differential pressure at the entire filter is kept at practically constant level what allows to continuously use filter during 24 hours per day.
Local filter for vertical mounting
Local filter for horizontal mounting
Estimated limits (standard equipment)
Noise level of equipment is an important factor at designing and selection of new equipment. Some EU directives and national laws/normative accepting these directives are referred to noise bursts transferred by air. Employers should provide minimum noise level according to the EU standards, at the level of 85 dB (А).
Local filters have average noise indication of 78 dB (А).
All the indications were taken at normal industrial areas, i.e. with semireverberation environments, at non-operated local equipment within a radius of 1,0 meter from house of equipment and at a height of engine shaft with use of precision sound-level meter and octave filter.
Noise levels of the installed equipment can be changed depending on conditions.