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
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
<Desc/Clms Page number 1>
Selbsttätige Schaltvorrichtung für die Entlüftungspumpe von Feuerlöschkreiselpumpen.
EMI1.1
<Desc/Clms Page number 2>
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 :
EMI2.1
<Desc / Clms Page number 1>
Automatic switching device for the ventilation pump of fire fighting centrifugal pumps.
EMI1.1
<Desc / Clms Page number 2>
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:
EMI2.1
Claims (1)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2809590A (en) * | 1954-01-29 | 1957-10-15 | Robert J Brown | Electric motor driven pump |
-
1926
- 1926-04-24 AT AT107208D patent/AT107208B/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2809590A (en) * | 1954-01-29 | 1957-10-15 | Robert J Brown | Electric motor driven pump |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AT107208B (en) | Automatic switching device for the ventilation pump of fire fighting centrifugal pumps. | |
DE712690C (en) | Electric motor, especially for hoists, with mechanical brake | |
AT104825B (en) | Device for feeding locomotive u. Like. Boiler in connection with a heat exchange device. | |
AT122606B (en) | Thermostat. | |
DE548700C (en) | Centrifugal pump with coaxially arranged ventilation pump, advantageously designed as a water ring pump | |
AT136898B (en) | Suction device for centrifugal pumps. | |
AT95139B (en) | Lubricator. | |
DE954657C (en) | Device for sealing the shaft of a turbo machine through a fluid barrier for thermal power plants with gaseous working media | |
DE858357C (en) | Centrifugal slurry pump | |
DE742785C (en) | Device for limiting the speed of motor vehicles | |
AT114072B (en) | Braking device with an auxiliary power source, in particular for motor vehicles. | |
AT115125B (en) | Pump set for driving hydraulic fluid-operated closing devices for turbine inlets, pipelines, channels and the like. like | |
AT102866B (en) | Heat storage device. | |
DE744529C (en) | Device for controlling a compressor system in which a centrifugal compressor is connected upstream of a reciprocating compressor | |
AT273683B (en) | Device for actuating the clutch of motor vehicles | |
DE914897C (en) | Pump water heating system | |
AT140353B (en) | Device for slowing down the rate of fire in automatic weapons. | |
AT144442B (en) | Oil firing system. | |
AT211459B (en) | Valve system to prevent oil from spraying out of the nozzle in pressure oil burners with an oil heater between the pump and nozzle | |
AT107880B (en) | Device for the gradual release of single-chamber compressed air brakes. | |
AT157480B (en) | Device for automatically activating the burner nozzle of pressurized oil-fed oil firing apparatus. | |
AT148501B (en) | Wick burners for heating purposes. | |
DE375044C (en) | Automatic sealing of the stuffing box of the ventilation pump in fire extinguishing centrifugal pumps | |
AT47691B (en) | Steam inlet device provided with a pressure reducing device. | |
DE711277C (en) | Flame tube steam boiler with downstream flue gas preheater |