EP0755699B1 - Löschpistole - Google Patents
Löschpistole Download PDFInfo
- Publication number
- EP0755699B1 EP0755699B1 EP95116170A EP95116170A EP0755699B1 EP 0755699 B1 EP0755699 B1 EP 0755699B1 EP 95116170 A EP95116170 A EP 95116170A EP 95116170 A EP95116170 A EP 95116170A EP 0755699 B1 EP0755699 B1 EP 0755699B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fire
- plunger
- channel
- housing
- gun according
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
- A62C31/03—Nozzles specially adapted for fire-extinguishing adjustable, e.g. from spray to jet or vice versa
Definitions
- the invention relates to an extinguishing gun according to the Preamble of claim 1 and in particular to one Extinguishing gun for a hand-held fire extinguisher.
- Conventional handheld fire extinguishers consist of a housing having a through channel, the Passage cross section by means of an adjustment device is changeable.
- the setting device is for operation provided with a hand lever.
- On the entrance side of the Housing is provided with a connection to the extinguishing gun to connect the pressure hose of a fire extinguisher.
- the extinguishing gun can also be integrated into the housing of the fire extinguisher, so that in in this case the connection device is omitted.
- Fire guns with a connection device for connection a pressure hose are conventional with a so-called double nipples.
- This double nipple with one side in the through-channel of the extinguishing gun inserted and on the other side of the double nipple there is a connection with the pressure hose of the Fire extinguisher.
- Double nipple over known flange surfaces for attachment a pressure hose for example by means of a Pipe clamp can be fixed to the double nipple.
- Means this construction of the double nipple can Compressive strength up to over 60 bar can be achieved, even at Temperature fluctuations from -20 ° C to + 60 ° C are maintained.
- Document US-A-2,195,811 discloses an extinguishing gun a housing which has a through channel through which the extinguishing agent is conveyable and its cross section by means of a setting device can be changed, which is via a Housing bearing lever is actuated, the lever with a piston connected in a cylinder of the housing is slidably received with its first end in the Passage channel protrudes and has a paragraph, the shows annular surface to the through channel and with this in Connection is established.
- One between the housing and the piston acting compression spring pushes the piston into the through-channel inside.
- the object of the present invention is to achieve a good handling extinguishing gun to create the very high pressures the flow medium withstands and even when exceeded a limit pressure is not destroyed.
- the extinguishing gun has a housing, which is provided with a through-channel through which the Extinguishing media is promoted.
- a through-channel through which the Extinguishing media is promoted.
- This Setup is via a lever mounted on the housing operated. The lever is connected to a piston which is in a cylinder of the housing is slidably received and the first end of which protrudes into the through-channel.
- the piston has at least one shoulder, the annular Surface to the through channel shows and with this in Connection is. Because of this annular surface on which the pressure in the through-channel is present, the piston is off a certain limit pressure automatically from the Through channel pushed out and thus the through channel Approved. By releasing the through channel, it drops the pressure in the through channel and a destruction of the Fire gun is prevented.
- the piston is spring-loaded into the Through channel crowded so that it is by means of the lever or if necessary, by an overpressure in the through channel against the Spring force is opened.
- the first end of the piston has an advantageous effect with a special seat in the through channel.
- the first end of the piston with a sealing element be provided.
- the ring surface of the paragraph for automatic opening of the Pistons above a certain limit pressure are advantageous the spring force matched. According to one embodiment automatic opening from a limit pressure of 70 bar and automatic closing at a pressure of less than 40bar reached.
- the second end of the Lever connected to operate the piston. If the lever is pivoted, is a conversion of the pivoting movement of the lever into one Translational movement of the piston required.
- This Implementation can be done via an hourglass-shaped contour on the piston and a pin-shaped or a fork-shaped element on Lever done that is engaged with the contour.
- the contour on the lever and that Element to be provided on the piston can be on either side of the piston or just be provided on one side. It can also be one hourglass-shaped bore are used, which with a Element interacts.
- the lever does not have to be pivotable, but can also can be moved or pushed into the housing. In this Case is a conversion of a swivel movement into a No translation movement required. It can diverse controls can be provided as a lever.
- the spring force can be from a spring directly or via the Lever can be applied to the piston. Doing so can cause pressure or tension springs are used between the housing and Levers or pistons can be arranged. Of course torsion springs can also be used, for example be arranged on the axis of the pivotable lever can to load this in the closed position.
- the through channel preferably has one flow-optimized internal geometry that is not sharp Has edges.
- the housing by means of a Double nipples can be connected to the pressure hose.
- the housing by means of a Double nipples can be connected to the pressure hose.
- the housing by means of a Double nipples can be connected to the pressure hose.
- the Through channel and the end of the double nipple with one Be provided annular groove in which a ring is arranged.
- This connection allows easy assembly of the Double nipple if the ring is a spring ring for example snap ring possibly made of plastic is because the double nipple is only in the through channel must be inserted. It turns out to be special Advantage that the double nipple can be rotated relative to the Housing is, making handling of the fire extinguisher connected extinguishing gun is significantly simplified.
- the assembly is made by a bevelled surface on the Inlet opening of the through-channel facilitated. This simplifies the insertion of the double nipple and presses if a spring ring is mounted in the ring groove of the double nipple is this together when inserting the double nipple. Is in the ring groove of the through channel is a resilient ring mounted, it can easily be inserted when inserting the double nipple be squeezed when the first end of the Double nipple on the front side a beveled surface having.
- the through-channel can be used to seal the connection and / or the end of the double nipple with an annular groove Be provided with a sealing ring.
- the recording of the double nipple is facilitated if the through-channel is provided with a paragraph by means of which the cross section is enlarged towards the double nipple. That way can also be achieved that the effective cross section of the Through channel not reduced due to the double nipple becomes.
- different double nipples can also be used different passage cross-sections are used, around the fire gun to different operating conditions to be able to adapt.
- the insertion of the double nipple is further simplified if the through channel on his towards the double nipple facing opening with a bevelled surface is. Furthermore, the double nipple with a paragraph be provided with the paragraph of the passage channel cooperates to insert the double nipple facilitate or determine a specific end position.
- the invention is based on a preferred Embodiment explained in more detail.
- the figure shows an embodiment of the invention in Cross-section.
- the figure shows an extinguishing gun attached to the pressure hose a fire extinguisher can be connected.
- the housing 4 the extinguishing gun has a through channel 6, in the rear end a double nipple 1 for connecting a Pressure hose is inserted.
- the front end of the through channel 6 goes into the Ejection nozzle 10 over.
- a seat 9 is formed, which for Includes a sealing element 12, which on the front end of a piston 7 is provided.
- the piston 7 has a paragraph 8 and is with its rear Section in a cylinder 13 of the housing 4 slidably stored.
- To seal the piston 7 from the housing is the sliding portion of the piston 7 in the cylinder 13 Provide annular grooves 14 in which sealing rings are arranged.
- the rear end of the piston 7 protrudes from the housing 4 and is hourglass-shaped on both sides Contour 16 provided.
- the lever 5 for actuating the piston 7 is pivotally mounted on an axis 17 of the housing 4 and has a fork-shaped element 15, which of the Hole 16 is added.
- the lever 5 is not one spring shown in the closed position shown crowded.
- the fire pistol is connected to the double nipple 1 with the Pressure hose 2 of the fire extinguisher connected.
- the double nipple 1 has a first end 3 which extends into the through-channel 6 is used and a second opposite end 2 which the pressure hose is attached in a conventional manner.
- the first end 3 is on its outer circumference with a Ring groove 18 provided in the assembled position of the Double nipple 1 is opposite an annular groove 19 which in the Through channel 6 is formed.
- an annular groove 19 which in the Through channel 6 is formed.
- the two ring grooves 18, 19 becomes a resilient ring, which is not in the drawing is shown. Because the inner half of the ring in the annular groove 18 of the double nipple 1 and the outer half is received in the annular groove 19 of the through channel 6, is the double nipple 1 by means of this ring in the Through channel 6 held.
- the Through channel 6 is on the side of the double nipple 1 with provided a paragraph 23 which widens the cross section.
- the Entry opening of the through channel 6 is with a beveled surface 20 provided.
- the first end 3 of the Double nipple 1 is provided with a paragraph 22, the Diameter of the first end 3 is reduced.
- the double nipple 1 To connect the extinguishing gun to the fire extinguisher the double nipple 1, on which the not shown Pressure hose is mounted, anchored in the through channel 6.
- the described double nipple 1 is 3 at its first end with a sealing ring in the annular groove 21 and with a resilient snap ring fitted in the ring groove 18.
- the Double nipple 1 is then in the opening of the through channel 6 introduced, which due to the reduced diameter on insertion end of the double nipple 1 is not a problem.
- the beveled surface 20 at the entrance of the Through channel 6 presses the further insertion of the Double nipple 1 the resilient snap ring together and presses completely into the ring groove 18.
- the snap ring has reached the annular groove 19 in the through channel 6, expands this and thus comes partially in the annular groove 19 partially to lie in the annular groove 18.
- the connection guarantees an unrestricted advantage as a special advantage Rotatability of the double nipple 1 relative to the housing 4 of the Fire pistol.
- the extinguishing gun As soon as the extinguishing gun is connected, it can also be used. By pushing down the lever 5 it will fork-shaped element 15 around the pivot axis 17 after swiveled at the back. The element 15 is over the contour 16 with connected to the piston 7 and takes it with it. In this way the piston 7 is pulled out of the through channel 6 and the sealing element 12 is lifted off the seat 9. about the hourglass-shaped contour 16 becomes the pivoting movement of the Element 15 in a simple manner in a translational movement the piston 7 implemented, without causing jamming of the Element 15 could come. When lever 5 is released, this is in his by the spring, not shown returned starting position shown and the piston 7th pushed into the passage 6 until the sealing element 12 rests on the seat 9.
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Insulated Conductors (AREA)
- Glass Compositions (AREA)
- Fluid-Driven Valves (AREA)
- Nozzles (AREA)
Description
Claims (12)
- Löschpistole mit einem Gehäuse (4), das einen Durchgangskanal (6) aufweist, durch den das Löschmittel förderbar ist und dessen Querschnitt mittels einer Einstelleinrichtung veränderbar ist, die über einen am Gehäuse (4) gelagerten Hebel (5) betätigbar ist, wobei der Hebel (5) mit einem Kolben (7) verbunden ist, der in einem Zylinder (13) des Gehäuses (4) gleitend aufgenommen wird, der mit seinem ersten Ende (3) in den Durchgangskanal (6) ragt und der mittels Federkraft in den Durchgangskanal gedrängt wird, wobei der Kolben (7) zumindest einen Absatz (8) aufweist, dessen ringförmige Fläche zum Durchgangskanal (6) zeigt und mit diesem in Verbindung steht, dadurch gekennzeichnet, daß die Ringfläche des Absatzes (8) zum selbsttätigen Öffnen des Kolbens (7) ab einem bestimmten Grenzdruck auf die Federkraft abgestimmt ist und zur Abdichtung des Kolbens (7) an dem im Zylinder gleitenden Bereich ein Dichtungsring in einer Ringnut am Umfang des Kolbens (7) oder am Innenumfang des Zylinders (13) aufgenommen ist.
- Löschpistole nach Anspruch 1, dadurch gekennzeichnet, daß der Kolben (7) an dem im Zylinder (13) gleitenden Bereich am Umfang mit zumindest einer Dichtung versehen ist.
- Löschpistole nach Anspruch 2, dadurch gekennzeichnet, daß die Dichtung ein in einer Ringnut am Umfang des Kolbens (7) aufgenommener Dichtungsring (14) ist.
- Löschpistole nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß das erste Ende des Kolbens (7) mit einem Sitz (9) im Durchgangskanal (6) zusammenwirkt und im geschlossenen Zustand den Durchgangskanal (6) vollständig verschließt.
- Löschpistole nach Anspruch 4, dadurch gekennzeichnet, daß das erste Ende des Kolbens (7) mit einem Dichtungselement (11) versehen ist.
- Löschpistole nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß der Kolben ab einem Grenzdruck von 70 bar selbsttätig öffnet.
- Löschpistole nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß der Kolben bei einem Druck von kleiner als 40 bar selbsttätig schließt.
- Löschpistole nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß der Hebel (5) verschwenkbar ist und mit einer Wandeleinrichtung zur Umwandlung der Schwenkbewegung des Hebels in eine Translationsbewegung des Kolbens versehen ist.
- Löschpistole nach Anspruch 8, dadurch gekennzeichnet, daß die Wandeleinrichtung aus einer stundenglasförmigen Kontur (16) am Kolben und einem Element (15) am Hebel (5) besteht, das mit der Kontur (16) in Eingriff ist.
- Löschpistole nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß die Federkraft von einer Druck- oder Zugfeder aufgebracht wird, die mit dem Gehäuse (4) und dem Hebel (5) zusammenwirkt.
- Löschpistole nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß die Federkraft von einer Druck- oder Zugfeder aufgebracht wird, die mit dem Gehäuse (4) und dem Kolben (7) zusammenwirkt.
- Löschpistole nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß das Gehäuse (4) mittels eines Doppelnippels (1) mit einem Druckschlauch verbindbar ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29511922U | 1995-07-24 | ||
DE29511922U DE29511922U1 (de) | 1995-07-24 | 1995-07-24 | Löschpistole |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0755699A1 EP0755699A1 (de) | 1997-01-29 |
EP0755699B1 true EP0755699B1 (de) | 2000-09-13 |
Family
ID=8010921
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95116170A Expired - Lifetime EP0755699B1 (de) | 1995-07-24 | 1995-10-13 | Löschpistole |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0755699B1 (de) |
AT (1) | ATE196259T1 (de) |
DE (2) | DE29511922U1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202014005440U1 (de) | 2014-07-02 | 2014-07-16 | Harald NEUMAERKER | Löschpistole |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2195811A (en) * | 1938-06-03 | 1940-04-02 | Binks Mfg Co | Flow controlled gun |
US2363023A (en) * | 1941-09-12 | 1944-11-21 | Minnesota Mining & Mfg | Flow gun |
US2736385A (en) * | 1951-12-26 | 1956-02-28 | C O Two Fire Equipment Co | Dry powder fire extinguisher nozzle |
US4083497A (en) * | 1976-06-03 | 1978-04-11 | Chem-Lawn Corporation | Spray gun |
US4219162A (en) * | 1978-05-09 | 1980-08-26 | Hozelock Limited | Spray nozzles for spraying liquids |
DE9206928U1 (de) | 1992-03-06 | 1992-07-30 | Mechanische Werkstätte Koller & Co. Ges.m.b.H., Wien | Geräteseitiger Anschluß einer Löschpistole |
US5226682A (en) * | 1992-07-21 | 1993-07-13 | Aeroquip Corporation | Coupling assembly |
-
1995
- 1995-07-24 DE DE29511922U patent/DE29511922U1/de not_active Expired - Lifetime
- 1995-10-13 DE DE59508717T patent/DE59508717D1/de not_active Expired - Lifetime
- 1995-10-13 EP EP95116170A patent/EP0755699B1/de not_active Expired - Lifetime
- 1995-10-13 AT AT95116170T patent/ATE196259T1/de active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202014005440U1 (de) | 2014-07-02 | 2014-07-16 | Harald NEUMAERKER | Löschpistole |
DE102014212823A1 (de) | 2014-07-02 | 2016-01-07 | Harald NEUMAERKER | Löschpistole |
Also Published As
Publication number | Publication date |
---|---|
ATE196259T1 (de) | 2000-09-15 |
DE29511922U1 (de) | 1995-10-05 |
EP0755699A1 (de) | 1997-01-29 |
DE59508717D1 (de) | 2000-10-19 |
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