DE1909549A1 - Dust gas filter - Google Patents

Description

Filterbau- Joins ter / Ves ti "., The Ij. Dezeiubur

G-esellschaf t mbH.
hh Mtinater / WestJ.
Capelin hay 31

Dust gas filter.

The invention relates to a cleaning arrangement for a Dust gas filter, in particular for a pocket filter.

To maintain the filterability of dust gas filters, this is not necessary

the filter swearing from time to time by adhering and one g

urgent dust. This usually happens by switching off individual filter surfaces from the b ~ v. ". iifschla ^ oiiaen St. exhaust gas flow and through a llindurchulasen von so-called purge gas in the reverse direction of flow. Here is a simultaneous mechanical shaking of the filter area expedient,

KS is known for the cleaning process in groups Disposal of auxiliary devices on the filter surfaces, by special switching devices at time intervals ^ etilti-it be. At the same time, it is ensured that di'ii a reverse ^ the cast trUmun ^ srichfcu.ug within of the filter surfaces. I.

Since the jo I "aiinahuen require a high tecaii upv / c-.nd e. ', Ncr.ovi tries v / oreen, only by reversing the structure: .iurig.3rieJutun ·: riiirch- Jie filter areas, i . ui) on is possible. 'To increase the Virkun; in such systems, attempts have been made to use the o ^ iil gas SoU) Bκ for mechanical vibration of the 1' ¹ Ll torfIi cihen, v / as is particularly useful in the so-called

009838/0920

BAO ORIGINAL

called pocket filters due to their unstable surface-like properties Offers training. For this purpose, a pulsating purging gas was used, including, for example, a rotating butterfly valve is used, which is in the supply pipe the purge gas line is installed «

However, the effect of such a measure is insufficient, because the intended shock-like vibration of the filter surface is not sufficient. When the purging gas line is closed and opened by a shutter, the purging gas volume must are accelerated and decelerated ininer again, so that the intended impact does not affect the filter surface, but the closing element in the purge gas line.

The invention is based on the task, with a steady flowing gas flow in the purge air line its jerky . to effect deceleration by the filter fl <.c: b * m .self ".

According to the invention, this object is achieved in that the Spailuftstro.ni alternately by a pendular switchover flap passed into two filter pockets at the same time will.

^ in Ausführungsiui_; sbeispiel the invention is in the drawing illustrated unci.; is described in more detail in the fol., enüen, Es demonstrate:

Fig. 1 in a schematic representation of a horizontal 'section through a filter _} in the case of the alternately forced filter cakes-behind each other -lifegen. '

Pi::. 2 a ^ leiciien section through a filter ", at dey: the alternately dismantled opposite lieyen »" -

III a housing! Are Filterta ^ ohcn 2 fingeordrie-t the you ouch a sen by gas ο eau fs gill ag. t.-, r ^ rgei ^ v »elchts by de.a

_ * z

Nozzle 3 flows into the filter housing. The cleaned dust gas exits through the side outlet openings k of the filter bags into the clean air duct 5 and leaves it through the nozzle 6. In the clean air duct 5, a pair of nozzles Θ moves along with the purge air fan 7, which takes its intake air from the clean air duct is designed so that it covers two adjacent outlet openings h of the filter pockets 2 and at the same time allows the blowing in of flushing gas, which penetrates the filter areas in the opposite direction to clean off the dust adhering to the outside. In order to better clean the filter surfaces a "

The flushing gas supply is used to cause these surfaces to flutter and to generate tension in the tissue through blasts of air periodically interrupted to the individual filter pockets, and this is done by one, not by means of one Drawn drive back and forth to be moved pendulum flap 9t which the flushing gas alternately in two in cleaning position located pockets directs. As a result of this measure, a uniform flow rate of the purge gas fan remains and the dynamic pressure does not need to be regenerated. A braking and therefore material-generating The effect is effective on the filter surface itself and thereby supports the waste in the desired manner cleaning process. This effect is achieved with very little technical effort.

In Fig. 2 a corresponding device is shown with a different arrangement of the filter bags. Lay here two filter bags facing each other. In this way, there is a particularly favorable use of space with a common Clean air duct 5 with a single purge gas fan. In this system, as shown in the drawing, two opposing filter pockets are alternating acted upon by the purging gas stream and abereiiiif.t.

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Claims (4)

Claims e. Cleaning device for a St. ubgtisf iltor, especially with filter bottles in Trschenfora which the cleaning by pulsating purge gas takes place, indicated by this, üai? two each Filter bags are cleaned which are uninterrupted flowing S ~ n'lg: sstroia alternately supplied will. 2) cleaning _; Installation for a dust gas filter according to claim 1, characterized in that ..xaß the constantly flowing flushing gas flow through a penuelicliu , a au., easy-to-clean filter bags. 5) cleaning device according to αen partitions 1 and 2, characterized by the fact that the filter bags ^ 2) in equal distances one after the other along the pure gas channel (5) are in the el accordingly the nozzles (8) of the purging gas line at a distance of the pockets (2) respectively. their outlet openings (4) are arranged to one another, 4) Abreinigunjcsvorrichtung after the ^ _uis:; rüchen 1 and 2, characterized in that the filter pockets (2) are arranged on both sides of Iieingasaustrittskanales (5) opposite to each other and accordingly the nozzles (8) facing the Soülgasleitung today. 009838/0920
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