Faster, more pow­er­ful, pulse valves for dust fil­ters

DEMM Engineering & Manufacturing - - PRODUCT WATCH -

Dust pulse valves are of­ten used for clean­ing dust fil­ter bags in in­dus­trial or process ap­pli­ca­tions. A range of Ger­man de­signed valves from Nor­gren has been de­vel­oped to pro­vide sev­eral in­no­va­tive fea­tures that of­fer ef­fi­cient clean­ing and en­ergy sav­ings.

Dust fil­ter clean­ing sys­tems (of­ten known as bag houses) play a vi­tal role in many in­dus­tries to fil­ter par­ti­cles and stop them from en­ter­ing the en­vi­ron­ment – from milk pow­ders to ce­ment pow­der through to MDF board plant dust par­ti­cles.

Com­pressed air is used to pro­vide a short, in­tense blast into the soiled fil­ter el­e­ment, and then dust and con­tain­ments fall from the fil­ter where they are re­moved.

There are sev­eral key com­po­nents to the tech­nol­ogy of dust pulse valves from Nor­gren. The di­aphragm has to op­er­ate ex­tremely rapidly, to pro­vide op­ti­mum clean­ing by reach­ing a set point quickly. The one-piece moulded de­sign di­aphragm pro­vides an im­prove­ment in valve open­ing times, gen­er­at­ing steep pres­sure in­creases.

The switch on re­sponse is 38 mil­lisec­onds with a to­tal pulse on and off cy­cle time of 165ms from a 50ms elec­tri­cal pulse.

The high f low de­sign of the Nor­gren dust valves pro­vides a lower pres­sure dif­fer­ence be­tween the valve and the dust fil­ter bag, en­abling lower op­er­at­ing pres­sures.

demm.co.nz/read­eren­quiry #D140207

Cross-sec­tional view of Nor­gren’s sharp pulse dust fil­ter valves.

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