AT39182B

AT39182B - Device for washing out loose filter media.

Info

Publication number: AT39182B
Authority: AT
Inventors: Hans Reisert
Original assignee: Hans Reisert
Priority date: 1906-08-11
Filing date: 1906-08-11
Publication date: 1909-10-11

Description

  

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   Handelt es sich um ein geschlossenes, also unter dem Druck der Rohrwassersäule arbeitendes Filter, so kann die Pressluft in dem   Kompressor p unmittelbar   nach beendigter Waschperiode bei Einleitung der nächsten Filterperiode   erzeugt werden.   Die Luft wird dann durch das unter   Druck nachströmende Wasser aus dem Raun   m und durch die Leitung   I   in den Kompressor p zurückgedrückt. Auf diese Weise wird stets dieselbe Pressluft wieder benutzt. Ist das Filter aber offen, so kann die Luft in dem Kompressor vor dem jedesmaligen Auswaschen mittelst Druckwasser zusammengepresst werden, indem man mittelst des Hahnes h das noch darin befindliche Wasser entfernt, Luft durch k eintreten lässt und den   Druckwasserhahn     i   öffnet. 



   Ist eine grössere Filterbatterie vorhanden, so genügt ein einziger Kompressor. überhaupt gestattet die Einrichtung den Bau grösserer Batterien in besonders vorteilhafter Weise, wobei dann   zweckmässig   die Schächte c für das Abwasser nicht in der Mitte jedes Filters, sondern je zwischen zwei benachbarte Filter eingebaut werden. 
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   If the filter is closed, that is to say working under the pressure of the pipe water column, the compressed air can be generated in the compressor p immediately after the washing period has ended when the next filter period is initiated. The air is then pushed back out of the room m and through the line I into the compressor p by the water flowing in under pressure. In this way the same compressed air is always used again. If the filter is open, however, the air in the compressor can be compressed by means of pressurized water before being washed out each time, by removing the water still in it by means of the tap h, allowing air to enter through k and opening the pressurized water tap i.



   If there is a larger filter battery, a single compressor is sufficient. In general, the device allows the construction of larger batteries in a particularly advantageous manner, in which case the shafts c for the waste water are then expediently not installed in the middle of each filter, but rather between two adjacent filters.
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Claims

Device for washing out loose filter media by backwashing, characterized in that under the filter bed a collecting space for the entire EMI2.2 in a known manner by means of a gaseous pressure medium, preferably compressed air, the device being designed so that when the water passes into the filter mass, it does not have to pass through any passage cross-sections that could impair the speed required to lift the entire filter mass to levitation.