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DE896302C - Jet pump for sucking in additional fluids, e.g. B. foaming agents, especially for fire extinguishing purposes - Google Patents

Jet pump for sucking in additional fluids, e.g. B. foaming agents, especially for fire extinguishing purposes

Info

Publication number
DE896302C
DE896302C DEA13784D DEA0013784D DE896302C DE 896302 C DE896302 C DE 896302C DE A13784 D DEA13784 D DE A13784D DE A0013784 D DEA0013784 D DE A0013784D DE 896302 C DE896302 C DE 896302C
Authority
DE
Germany
Prior art keywords
jet pump
bypass line
protective screen
sucking
fire extinguishing
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
Application number
DEA13784D
Other languages
German (de)
Inventor
Johannes Dipl-Ing Schoen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ALLG FEUERLOESCHER AG
Original Assignee
ALLG FEUERLOESCHER AG
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 ALLG FEUERLOESCHER AG filed Critical ALLG FEUERLOESCHER AG
Priority to DEA13784D priority Critical patent/DE896302C/en
Application granted granted Critical
Publication of DE896302C publication Critical patent/DE896302C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/311—Injector mixers in conduits or tubes through which the main component flows for mixing more than two components; Devices specially adapted for generating foam
    • B01F25/3111—Devices specially adapted for generating foam, e.g. air foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/311—Injector mixers in conduits or tubes through which the main component flows for mixing more than two components; Devices specially adapted for generating foam
    • B01F25/3111—Devices specially adapted for generating foam, e.g. air foam
    • B01F25/31114—Devices specially adapted for generating foam, e.g. air foam with means for introducing an additional component, e.g. in predetermined proportion or in the main component
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • B01F25/3124—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow
    • B01F25/31242—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow the main flow being injected in the central area of the venturi, creating an aspiration in the circumferential part of the conduit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/432—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction with means for dividing the material flow into separate sub-flows and for repositioning and recombining these sub-flows; Cross-mixing, e.g. conducting the outer layer of the material nearer to the axis of the tube or vice-versa

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Filtration Of Liquid (AREA)

Description

Die Erfindung betrifft eine Strahlpumpe zum Ansaugen von Zusatzflüssigkeiten, z. B. Schaumbildnern, insbesondere für Feuerlöschzwecke, mit einem in einer Umgehungsleitung angeordneten, von Hand oder durch einen Regler betätigten Drosselorgan und einem Schutzsieb. The invention relates to a jet pump for sucking in additional liquids, z. B. foaming agents, especially for fire fighting purposes, with one in a bypass line arranged, operated by hand or by a regulator throttle device and a Protective screen.

Es sind. bereits derartige Strahlpumpen bekanntgeworden, bei denen das Schutzsieb an der Eintrittsseite angeordnet ist und das gesamte die Strahlpumpe und die Umgehungsleitung durchströmende Wasser durch das Sieb hindurchfließt. There are. such jet pumps already become known in which the protective screen is arranged on the inlet side and the whole of the jet pump and water flowing through the bypass line flows through the strainer.

Bei dieser bekannten Anordnung muß das Sieb verhältnismäßig grobmaschig sein, da es sich sonst zu schnell zusetzen würde. Derartig grobmaschige 'Siebe haben jedoch den Nachteil, daß sie noch zuviel Fremdkörper hindurchlassen, so daß die Gefahr einer Verstopfung der verhältnismäßig engen Öffnungen des Drosselorgans der Umgehungsleitung besteht. Die Erfindung hat sich die Aufgabe gestellt, hier Abhilfe zu schaffen.In this known arrangement, the sieve must have a relatively large mesh otherwise it would clog up too quickly. Have such wide-meshed sieves However, the disadvantage that they still let too much foreign matter through, so that the Risk of clogging of the relatively narrow openings of the throttle member Bypass line exists. The invention has set itself the task of remedying this to accomplish.

Erfindungsgemäß sind an der Abzweigstelle der Umgehungsleitung, vorzugsweise also am Strahlpumpeneingang, Sieb- oder Filterflächen mit ausreichend kleinen Öffnungen derart angeordnet, daß lediglich das durch die Umgehungsleitung strömende Wasser durch sie hindurchtritt, während der durch die Strahlpumpe selbst hindurchgehende Wasserstrom an ihnen mit solcher Geschwindigkeit entlang strömt, daß abgesetzte Verunreinigungen mit fortgespült werden. Es findet also während des Betriebes eine fortlaufende Selbstreinigung der Flächen des Schutzsiebes statt. Das Schutzsieb kann dabei die Form eines Kegel stumpf- oder Zylindermantels haben und so angeordnet sein, daß seine Achse mit der Hauptachse der Strahlpumpe zusammenfällt. Zweckmäßig besteht das Schutzsieb aus einem mechanisch widerstandsfähigen Stützkörper, beispielsweise aus gelochtem Blech, und einem mit diesem fest verbundenen Siebgewebe, wobei der Stützkörper vorzugsweise in Strömungsrichtung hinter dem Siebgewebe angeordnet ist. According to the invention, at the branch point of the bypass line, preferably i.e. at the jet pump inlet, sieve or filter surfaces with sufficiently small openings arranged such that only the water flowing through the bypass line passes through it, while the one passing through the jet pump itself Stream of water flows along them at such a speed that settled Impurities are also washed away. So it finds one during operation continuous self-cleaning of the surfaces of the protective screen takes place. The protective screen can have the shape of a truncated cone or cylinder jacket and so arranged be that its axis coincides with the main axis of the jet pump. Appropriate the protective screen consists of a mechanically resistant support body, for example made of perforated sheet metal, and a screen mesh firmly connected to this, the Support body is preferably arranged in the flow direction behind the screen fabric.

Die einzige Abbildung zeigt ein Ausführungsbeispiel der Erfindung schematisch im Schnitt. The single figure shows an embodiment of the invention schematically in section.

Das Druckwasser tritt in Pfeilrichtung in den Eingangsstutzen I der Strahlpumpe ein, durchströmt das Innere des Schutzsiebes 2, 3 und wird in der Treibdüse 4 in der bekannten Art auf hohe Geschwindigkeit und niedrigen Druck gebracht. The pressurized water enters the inlet port I in the direction of the arrow Jet pump, flows through the interior of the protective screen 2, 3 and is in the propellant nozzle 4 brought to high speed and low pressure in the known manner.

Der aus der Mündung der Treibdüse 4 austretende Wasserstrahl saugt den in der Saugkammer 5 befindlichen Schaumbildner an und wird in der Fangdüse 6 und dem sich anschließenden Diffusor 7 unter Rückgewinnung des größten Teils der Druckenergie verzögert. Der Schaumbildner tritt von unten in den Saugstutzen 8 ein, hebt die Rückschlagkugel 9 an und strömt in den Saugraum 5.The water jet emerging from the mouth of the driving nozzle 4 sucks the foaming agent located in the suction chamber 5 and is in the collecting nozzle 6 and the adjoining diffuser 7 with recovery of most of the Printing energy delayed. The foaming agent enters the suction port 8 from below, lifts the non-return ball 9 and flows into the suction chamber 5.

Das Schutzsieb 2, 3 schließt den ringförmigen Sammelraum 10 ab, von dem die Umgehungsleitung II ausgeht, in der sich das im einzelnen nicht näher dargestellte Drosselorgan 12 befindet.The protective screen 2, 3 closes the annular collecting space 10 from which the bypass line II goes out, in which that is not shown in detail Throttle body 12 is located.

Das aus der Umgehungsleitung 11 austretende Wasser vereinigt sich bei I3 mit dem aus dem Diffusor 7 entströmenden Wasser-Schaumbildner-Gemisch und verläßt mit diesem zusammen durch den Austrittsstutzen 14 die Strahlpumpe.The water emerging from the bypass line 11 combines at I3 with the water-foaming agent mixture flowing out of the diffuser 7 and leaves with this together through the outlet nozzle 14, the jet pump.

Das Schutzsieb besteht aus einem aus gelochtem Blech hergestellten Zylindermantel 2, in den das eigentliche Siebgewebe 3 eingelötet ist. An seinem vorderen Ende sind am Stützkörper 2 zwei kurze Zapfen 15 befestigt, die zusammen mit in den Eingangsstutzen I eingearbeiteten Nuten6 einen Bajonettverschluß der bekannten Art bilden. Ein Bügel I7 dient als Handgriff bei der Herausnahme des Schutzsiebes. The protective screen consists of a perforated sheet metal Cylinder jacket 2 into which the actual screen fabric 3 is soldered. On his front end two short pins 15 are attached to the support body 2, which together with grooves6 incorporated into the inlet port I a bayonet lock of the known type. A bracket I7 serves as a handle when removing the protective screen.

Claims (3)

PATENTANSPRÜCHE: I. Strahlpumpe zum Ansaugen von Zusatzflüssigkeitenf z. B. Schaumbilidnern, insbesondere für Feuerlöschzwecke, mit einem in einer Umgehungsleitung angeordneten, von Hand oder durch einen Regler betätigten Drosselorgan und einem Schutzsieb, dadurch gekennzeichnet, daß an der Ab zweigstelle der Umgehungsleitung, vorzugsweise am Strahlpumpeneingang, Sieb-oder Filterflächen mit ausreichend kleinen Öffnungen derart angeordnet sind, daß lediglich das durch die Umgehungsleitung strömende Wasser durch sie hindurchtritt, während der durch die Strahlpumpe selbst hindurchgehende Wasserstrom an ihnen mit genügender Geschwindigkeit entlang strömt. PATENT CLAIMS: I. Jet pump for sucking in additional liquids z. B. Schaumbilidnern, especially for fire fighting purposes, with one in a bypass line arranged, operated by hand or by a regulator throttle device and a Protective screen, characterized in that at the branch point of the bypass line, preferably at the jet pump inlet, sieve or filter surfaces with sufficiently small ones Openings are arranged such that only that flowing through the bypass line Water passes through them while that passes through the jet pump itself Water stream flows along them at sufficient speed. 2. Strahlpumpe nach Anspruch I, dadurch gekennzeichnet, daß die Achse des als Kegelstumpf- oder Zylindermantel ausgebildeten Schutzsiebes mit der Hauptachse der Strahlpumpe zusammenfällt. 2. Jet pump according to claim I, characterized in that the axis of the protective screen designed as a truncated cone or cylinder jacket with the main axis the jet pump collapses. 3. Strahlpumpe nach Anspruch I oder 2, dadurch gekennzeichnet, daß das Schutzsieb aus einem mechanisch widerstandsfähigen Stützkörper und einem vorzugsweise in diesem fest angeordneten Siebgewebe besteht. 3. Jet pump according to claim I or 2, characterized in that the protective screen from a mechanically resistant support body and preferably one consists in this firmly arranged screen mesh.
DEA13784D 1944-11-02 1944-11-02 Jet pump for sucking in additional fluids, e.g. B. foaming agents, especially for fire extinguishing purposes Expired DE896302C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA13784D DE896302C (en) 1944-11-02 1944-11-02 Jet pump for sucking in additional fluids, e.g. B. foaming agents, especially for fire extinguishing purposes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA13784D DE896302C (en) 1944-11-02 1944-11-02 Jet pump for sucking in additional fluids, e.g. B. foaming agents, especially for fire extinguishing purposes

Publications (1)

Publication Number Publication Date
DE896302C true DE896302C (en) 1953-11-12

Family

ID=6922966

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA13784D Expired DE896302C (en) 1944-11-02 1944-11-02 Jet pump for sucking in additional fluids, e.g. B. foaming agents, especially for fire extinguishing purposes

Country Status (1)

Country Link
DE (1) DE896302C (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2721520A (en) * 1953-02-09 1955-10-25 Deere & Co Pump device
US3040758A (en) * 1958-07-21 1962-06-26 Pyrene Co Ltd Inductors for liquids
US3373688A (en) * 1965-07-30 1968-03-19 Gen Electric Pumps
US3417770A (en) * 1965-06-07 1968-12-24 Electro Optical Systems Inc Fluid amplifier system
US4396356A (en) * 1979-01-26 1983-08-02 Lincoln Thompson Aspirator and aspirating system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2721520A (en) * 1953-02-09 1955-10-25 Deere & Co Pump device
US3040758A (en) * 1958-07-21 1962-06-26 Pyrene Co Ltd Inductors for liquids
US3417770A (en) * 1965-06-07 1968-12-24 Electro Optical Systems Inc Fluid amplifier system
US3373688A (en) * 1965-07-30 1968-03-19 Gen Electric Pumps
US4396356A (en) * 1979-01-26 1983-08-02 Lincoln Thompson Aspirator and aspirating system

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