AT107208B - Automatic switching device for the ventilation pump of fire fighting centrifugal pumps. - Google Patents

Automatic switching device for the ventilation pump of fire fighting centrifugal pumps.

Info

Publication number
AT107208B
AT107208B AT107208DA AT107208B AT 107208 B AT107208 B AT 107208B AT 107208D A AT107208D A AT 107208DA AT 107208 B AT107208 B AT 107208B
Authority
AT
Austria
Prior art keywords
switching device
fire fighting
automatic switching
centrifugal pumps
ventilation pump
Prior art date
Application number
Other languages
German (de)
Inventor
Richard Poesl
Original Assignee
Richard Poesl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Richard Poesl filed Critical Richard Poesl
Application granted granted Critical
Publication of AT107208B publication Critical patent/AT107208B/en

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  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

  

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    Selbsttätige Schaltvorrichtung   für die   Entlüftungspumpe   von   Feuerlöschkreiselpumpen.   
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   Ist die Kreiselpumpe mit Wasser gefüllt und erzeugt sie Druck, so schliesst das   Schwimmeivcntil   s die Luftpumpe von der Kreiselpumpe ab (Fig. 3). Gleichzeitig erfolgt aber auch ein Ausrücken der Luftpumpe, da durch die   Bohrung v   in der Pumpenwelle a der nunmehr vorhandene Förderdruck zwischen die beiden Kupplungshälften g und h gelangt, diese   auseinanderdrückt   und so ein Ausrücken der Kupplung bzw. Abschalten der Luftpumpe bewirkt. 



   Um nun ein Austreten des Schaltwassers aus dem Druckraum r durch die Bohrung v in der Welle a zu verhindern, ist, wie oben angeführt, der Teil   h   der Kupplung als Ventilkegel ausgebildet. Dieser Ventilkegel wird nun infolge des Wasserdruckes auf den Sitz im Gehäuse gepresst, wodurch ein Austritt des Schaltwassers vermieden wird (Fig. 2). 



   Beim Ausrücken der Kupplung kommen die Kanäle o im Teil hin Verbindung mit der   Ölbohrung n   (Fig. 2), so dass der Ventilsitz im Gehäuse   7G   durch Schleuderöl geschmiert und seine Abnutzung verhindert wird. 



   PATENT-ANSPRÜCHE   :   
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    Automatic switching device for the ventilation pump of fire fighting centrifugal pumps.
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   If the centrifugal pump is filled with water and generates pressure, the floating valve closes the air pump from the centrifugal pump (FIG. 3). At the same time, however, the air pump disengages, since the delivery pressure that is now present passes between the two coupling halves g and h through the bore v in the pump shaft a, pushes them apart and thus disengages the clutch or switches off the air pump.



   In order to prevent the switching water from escaping from the pressure chamber r through the bore v in the shaft a, the part h of the coupling is designed as a valve cone, as stated above. This valve cone is now pressed onto the seat in the housing as a result of the water pressure, which prevents the switching water from escaping (Fig. 2).



   When the clutch is disengaged, the ducts o in part come into connection with the oil bore n (FIG. 2), so that the valve seat in the housing 7G is lubricated by centrifugal oil and its wear is prevented.



   PATENT CLAIMS:
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Claims (1)

2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der verschiebbare Kupplungshälfte (h) als Ventilkegel ausgebildet ist, der sich in der Ausrückstellung der Kupplung gegen einen Sitz des Ge- häuses (k) legt und dadurch einen Austritt des Schaltwassers aus der Kreiselpumpe verhindert. 2. Device according to claim 1, characterized in that the displaceable coupling half (h) is designed as a valve cone which, in the disengaged position of the coupling, rests against a seat of the housing (k) and thereby prevents the switching water from escaping from the centrifugal pump . 3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Verbindung des von den beiden Kupplungshälften eingeschlossenen Raumes mit dem Druckwasserraum der Kreiselpumpe durch eine Bohrung (v) in der Kreiselpumpenwelle (a) erfolgt. EMI2.2 3. Apparatus according to claim 1, characterized in that the connection of the space enclosed by the two coupling halves with the pressurized water space of the centrifugal pump takes place through a bore (v) in the centrifugal pump shaft (a). EMI2.2
AT107208D 1926-04-24 1926-04-24 Automatic switching device for the ventilation pump of fire fighting centrifugal pumps. AT107208B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT107208T 1926-04-24

Publications (1)

Publication Number Publication Date
AT107208B true AT107208B (en) 1927-09-10

Family

ID=3624226

Family Applications (1)

Application Number Title Priority Date Filing Date
AT107208D AT107208B (en) 1926-04-24 1926-04-24 Automatic switching device for the ventilation pump of fire fighting centrifugal pumps.

Country Status (1)

Country Link
AT (1) AT107208B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2809590A (en) * 1954-01-29 1957-10-15 Robert J Brown Electric motor driven pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2809590A (en) * 1954-01-29 1957-10-15 Robert J Brown Electric motor driven pump

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