EP0408931A2 - Dispositif de mélange - Google Patents

Dispositif de mélange Download PDF

Info

Publication number
EP0408931A2
EP0408931A2 EP90112008A EP90112008A EP0408931A2 EP 0408931 A2 EP0408931 A2 EP 0408931A2 EP 90112008 A EP90112008 A EP 90112008A EP 90112008 A EP90112008 A EP 90112008A EP 0408931 A2 EP0408931 A2 EP 0408931A2
Authority
EP
European Patent Office
Prior art keywords
nozzle
admixing
inlet
outlet
outlet part
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.)
Withdrawn
Application number
EP90112008A
Other languages
German (de)
English (en)
Other versions
EP0408931A3 (en
Inventor
Reinhard Lansche
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.)
Total Walther Feuerschutz GmbH
Total Feuerschutz GmbH
Original Assignee
Total Walther Feuerschutz GmbH
Total Feuerschutz GmbH
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 Total Walther Feuerschutz GmbH, Total Feuerschutz GmbH filed Critical Total Walther Feuerschutz GmbH
Publication of EP0408931A2 publication Critical patent/EP0408931A2/fr
Publication of EP0408931A3 publication Critical patent/EP0408931A3/de
Withdrawn legal-status Critical Current

Links

Images

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
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • B01F25/3121—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
    • 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
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3131—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/834—Mixing in several steps, e.g. successive steps

Definitions

  • the invention relates to a device for admixing a foam or wetting agent into an extinguishing agent line (suction jet pump or injector), consisting of an admixing part with a propellant nozzle and a catch nozzle downstream of this in the flow direction, which is surrounded by an outlet part, an inlet part for water Driving nozzle upstream and the supply nozzle for the foam or wetting agent is arranged transversely to the flow direction of the water.
  • extinguishing agent line suction jet pump or injector
  • Such admixing devices are known as compact units. They consist of a body with an inlet nozzle for the water and an inlet nozzle for the foam agent and an inner central nozzle. The outlet part, consisting of several parts, was screwed onto the body as a tube. A partial water flow is conveyed within the proportioner.
  • the functionality of a proportioner includes a metering valve for the foam agent and a control valve for the internal partial water flow.
  • the compact design and the arrangement of metering and control valves require an extensive design, which is very labor-intensive and therefore very labor-intensive to manufacture. Ie, the production of the known admixing devices is very expensive. Furthermore, the compact design requires a large amount of material), namely as a red brass body.
  • admixing devices The main areas of application of such admixing devices are the mobile admixers of the fire departments, which are coupled into the pressure hose lines. Such admixers are also permanently installed in stationary systems.
  • the invention has for its object to provide an admixing device, which causes a significantly reduced processing during manufacture and is also much easier compared to previous devices.
  • the admixing part, the inlet part, the outlet part and the collecting nozzle are designed as separate parts, that the admixing part and the collecting nozzle are made of plastic and the inlet part and the outlet part are made of aluminum, the inlet part and the outlet part being detachable with are connected to the admixing part, the catch nozzle being clamped between the outlet part and the admixing part, and in that the driving nozzle is an inwardly directed component of the admixing part.
  • the admixing device consisting of individual parts is on the one hand very easy to assemble because it can be assembled with the simplest of means and on the other hand it requires almost no processing.
  • the arrangement according to the invention allows the use of aluminum for the inlet and outlet part because they no longer come into contact with the foaming agent. Furthermore, the admixing device becomes more durable because the parts touched by the foaming agent (admixing part and catch nozzle) are made of plastic, which is more resistant to the foaming agent.
  • Aluminum and plastic are much lighter than gunmetal, so that the admixer is overall much lighter than the previous admixers.
  • the plastic admixture can be sprayed, for example Casting process are manufactured very accurately, so that there is almost no processing for this part.
  • a particular advantage of this method of manufacture is that the driving nozzle can be integrated with the admixing part.
  • the inlet part and the outlet part can also be made to size in the mold and therefore hardly require any machining. When using a flange-screw connection, these parts can be assembled quickly and easily.
  • the arrangement according to the invention allows a further advantage, namely that the catch nozzle is loosely inserted into the admixing part and is inevitably clamped by the outlet part. This is also an assembly-friendly design.
  • the advantages of plastic can be used when using an aggressive foaming agent, but the stresses and forces are essentially transmitted or absorbed by the metal parts.
  • the use of the plastic has another advantage.
  • the admixing part can be manufactured from one tool for several types by means of corresponding exchangeable cores. This means that mixers of different sizes can be created with the same inlet and outlet parts.
  • the plastic also has the advantage that it can be colored so that it no longer has to be painted. In addition, the plastic can be under be colored differently so that different sizes of the admixer can already be recognized on the outside.
  • the admixing device 1 consists of an admixing part 2 with a driving nozzle 3, an inlet part 14, an outlet part 25 and a collecting nozzle 31 with nozzle part 34. Parts 2, 14, 25 and 31 are detachably connected to one another.
  • the admixing part 2 consists of an injection molded plastic body and has two housing walls 9 and 10, the outer surfaces of which run exactly flat and parallel to one another.
  • a coaxially arranged ring 6 surrounds the inward-reaching driving nozzle 3.
  • an inlet connection 4 is provided for supplying the foaming agent.
  • an external thread 5 is provided for screwing on a coupling.
  • an inlet bore 7 is provided in the ring 6, which is connected to an inlet duct 8 leading to the inlet connection 4 closed is.
  • a metering valve is connected to the inlet bore 7. With this metering valve, the amount of foam agent to be supplied is influenced. Seals 11 and 12 are embedded on the outer surfaces of the housing walls 9 and 10.
  • a bore 13 for receiving a control valve 21 is provided in the lower region of the housing wall 9.
  • the inlet part 14 consists of a cast cylindrical aluminum body with a flange 15 and a shoulder 16 which forms a channel 17 with the housing wall 9 of the admixing part 2.
  • the extension 16 there is a bore 18 with a thread 19.
  • the housing of the control valve 21 is screwed into this thread with a membrane 19a.
  • a bolt is connected to the membrane 19a and carries a valve plate 23 at the other end.
  • the inlet part 14 is provided with an external thread 20, onto which the coupling of a water pipe, not shown, can be screwed.
  • the control plate 21 is provided with inlet openings 22 in the region of the channel 17. The water flowing in via the opening 37 can thus penetrate into the control valve.
  • the control plate 23 closes the water inflow to the admixing part 2.
  • the control valve 21 is dimensioned such that the partial flow which is set via the bores 22 is automatically adjusted so that the admixture remains constant even with increased back pressure. It is advantageous that the inlet part 14 and the control valve 21 count as one structural unit and that a component which is usually otherwise customary can be omitted.
  • the outlet part 25 consists of a cylindrical part 25a and a transition part 25b with flange 26.
  • the outlet part 25 is detachably connected to the housing wall 10 of the admixing part 2 by means of a screw connection, not shown.
  • a suitable other type of fastening can also be provided here.
  • a support body 30 is firmly cast onto the cylindrical part 25a of the outlet part. Accordingly, the admixing device 1 with the admixing part 2 and the support body 3 has a firm stand, so that the outlet part 25, always with respect to its axis can be parked horizontally.
  • the cylindrical part 25a of the outlet part is provided with an external thread 29 for screwing on a coupling. This is the connection to the extinguishing line.
  • an inner flange 27 is also provided, which is set back somewhat and presses the flange 32 of the catching nozzle 31 against the part 1.
  • the catch nozzle 31 consists of a conically widening part 31a, a flange 32, a nozzle part 34 with a cylindrical extension 35 and a seal 33.
  • the catch nozzle 31 with the cylindrical extension 35 in inserted the inner part of the ring 6, the flange 32 being arranged such that a gap 36 is formed in the area of the bore 7 between the driving nozzle 3 and the nozzle part 34.
  • the flange 32 of the catching nozzle 31 protrudes into the recess 28 of the outlet part 25 and is consequently firmly clamped by these two parts when the outlet part 25 is assembled with the admixing part 2.
  • the mode of operation of the admixing device 1 is as follows.
  • the water flows through the opening 37 and the driving nozzle 3 into the interior of the collecting nozzle 31.
  • the foaming agent is through the opening 38 fed to the mixing part 2 and passes through the channel 8 and the bore 7 into the area of the gap 36 between the driving nozzle 3 and the nozzle part 34 of the collecting nozzle 31.
  • the foaming agent mixes with the water.
  • the foam agent-water mixture emerges at the opening 39 of the outlet part and thus reaches the extinguishing line (not shown), at the end of which there is a foam tube for generating the foam. If the pressure conditions at the opening 39 change, part of the extinguishing water can be passed through the opening 22 into the space 25c of the outlet part 25 by opening the control plate 23. In this way, the admixture can be kept constant automatically in the simplest way.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Nozzles (AREA)
  • Accessories For Mixers (AREA)
EP19900112008 1989-07-19 1990-06-25 Mixing device Withdrawn EP0408931A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3923891A DE3923891A1 (de) 1989-07-19 1989-07-19 Zumischeinrichtung
DE3923891 1989-07-19

Publications (2)

Publication Number Publication Date
EP0408931A2 true EP0408931A2 (fr) 1991-01-23
EP0408931A3 EP0408931A3 (en) 1991-07-24

Family

ID=6385385

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900112008 Withdrawn EP0408931A3 (en) 1989-07-19 1990-06-25 Mixing device

Country Status (9)

Country Link
EP (1) EP0408931A3 (fr)
CS (1) CS353590A2 (fr)
DD (1) DD300073A5 (fr)
DE (1) DE3923891A1 (fr)
FI (1) FI903582A0 (fr)
HU (1) HU207239B (fr)
NO (1) NO903104L (fr)
PL (1) PL286049A1 (fr)
YU (1) YU139190A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015210181B3 (de) 2015-06-02 2016-07-07 Awg Fittings Gmbh Zumischer für eine Feuerlöschvorrichtung
DE102016226203A1 (de) 2016-12-23 2018-06-28 TKW Armaturenvertriebs GmbH Dosiervorrichtung und Zumischer für Feuerlöschzwecke
DE202017107294U1 (de) 2017-11-30 2017-12-18 Jochen Widenmann Zumischer

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE860143C (de) * 1943-07-02 1952-12-18 Total Foerstner & Co Selbstregelnder Zumischer zum Einfuehren von Schaummitteln in Druckwasser fuehrende Leitungen
DE872002C (de) * 1945-03-28 1953-03-26 Total Foerstner & Co Selbstregelnder Zumischer zum Einfuehren von Schaummitteln in Druckwasser fuehrende Leitungen
FR1027195A (fr) * 1950-11-04 1953-05-08 Phillips & Pain Ets Perfectionnements aux générateurs de mousse extinctrice
DE905928C (de) * 1943-08-05 1954-03-08 Allg Feuerloescher Ag In Liqu Geraet fuer Feuerloeschzwecke zum Einbringen von Schaumbildnern, Netzmitteln u. dgl. in Druckwasser fuehrende Leitungen
FR1202441A (fr) * 1958-07-17 1960-01-11 Dubois Ets Perfectionnements aux appareils introducteurs d'un produit dans un écoulement fluide
US2953160A (en) * 1958-08-20 1960-09-20 Akron Brass Mfg Co Inc Bypass proportioner
GB1338378A (en) * 1971-01-06 1973-11-21 Waddington & Duval Ltd Liquid mixing devices
US4098851A (en) * 1974-02-20 1978-07-04 Erdolchemie Gesellschaft Mit Beschrankter Haftung Device for mixing gases and liquids
DE3006065A1 (de) * 1980-01-07 1980-08-28 Sumitomo Chemical Co Mischvorrichtung fuer stroemungsmittel
FR2459679A1 (fr) * 1979-06-27 1981-01-16 Matincendie Sa Melangeur pour l'introduction d'un produit liquide en proportion determinee dans une canalisation de liquide sous pression

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR925848A (fr) * 1946-04-23 1947-09-15 Ajustage extensible pour lances d'incendie

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE860143C (de) * 1943-07-02 1952-12-18 Total Foerstner & Co Selbstregelnder Zumischer zum Einfuehren von Schaummitteln in Druckwasser fuehrende Leitungen
DE905928C (de) * 1943-08-05 1954-03-08 Allg Feuerloescher Ag In Liqu Geraet fuer Feuerloeschzwecke zum Einbringen von Schaumbildnern, Netzmitteln u. dgl. in Druckwasser fuehrende Leitungen
DE872002C (de) * 1945-03-28 1953-03-26 Total Foerstner & Co Selbstregelnder Zumischer zum Einfuehren von Schaummitteln in Druckwasser fuehrende Leitungen
FR1027195A (fr) * 1950-11-04 1953-05-08 Phillips & Pain Ets Perfectionnements aux générateurs de mousse extinctrice
FR1202441A (fr) * 1958-07-17 1960-01-11 Dubois Ets Perfectionnements aux appareils introducteurs d'un produit dans un écoulement fluide
US2953160A (en) * 1958-08-20 1960-09-20 Akron Brass Mfg Co Inc Bypass proportioner
GB1338378A (en) * 1971-01-06 1973-11-21 Waddington & Duval Ltd Liquid mixing devices
US4098851A (en) * 1974-02-20 1978-07-04 Erdolchemie Gesellschaft Mit Beschrankter Haftung Device for mixing gases and liquids
FR2459679A1 (fr) * 1979-06-27 1981-01-16 Matincendie Sa Melangeur pour l'introduction d'un produit liquide en proportion determinee dans une canalisation de liquide sous pression
DE3006065A1 (de) * 1980-01-07 1980-08-28 Sumitomo Chemical Co Mischvorrichtung fuer stroemungsmittel

Also Published As

Publication number Publication date
DE3923891A1 (de) 1991-01-24
YU139190A (sh) 1994-06-24
CS353590A2 (en) 1991-12-17
EP0408931A3 (en) 1991-07-24
NO903104L (no) 1991-01-21
HU904536D0 (en) 1990-12-28
HUT58560A (en) 1992-03-30
DE3923891C2 (fr) 1993-04-22
FI903582A0 (fi) 1990-07-16
DD300073A5 (de) 1992-05-21
HU207239B (en) 1993-03-29
NO903104D0 (no) 1990-07-12
PL286049A1 (en) 1991-02-11

Similar Documents

Publication Publication Date Title
DE69636182T2 (de) Schnell lösbare Flüssigkeitskupplungseinheit
DE60215438T2 (de) Flüssigkeitsdruckregler mit Bypass
DE112009001469T5 (de) Duschkopf für Notfalleinrichtung
DE60203611T2 (de) Mischdüse
DE3542408A1 (de) Misch- und austragpresse fuer zwei-komponenten-medien, wie klebende isolier- bzw. abdichtungsmassen u.dgl.
EP1356868A1 (fr) Buse binaire avec un insert changeables
DE3015215A1 (de) Vorrichtung zur dosierten abgabe eines komprimierten gasfoermigen mediums
DE10392296T5 (de) Strömungsgleichrichter für einen Fluidstrom und Zapfpistole
EP0408931A2 (fr) Dispositif de mélange
DE102004044475A1 (de) Kupplungsstück
DE3871805T2 (de) Pulverspritzpistole.
EP0515449A1 (fr) Dispositif de coupe et de nettoyage d'objets au moyen d'un melange d'eau et d'un produit abrasif sous une haute pression environnante.
DE2261674B2 (de) Vorrichtung zum Ansaugen und Beimischen von Zusatzstoffen in einen Flüssigkeitsstrom einer Badearmatur od. dgl
DE4312994C2 (de) Vorrichtung zur Verspritzung von Suspensionen, insbesondere Mörteln
EP1016469A1 (fr) Pistolet de nettoyage d'un conduit d'évacuation
DE8915943U1 (de) Vorrichtung zum Ansaugen von Zusatzstoffen in eine Flüssigkeitsströmung
EP2516902A1 (fr) Ensemble sanitaire de distribution
EP0099000A2 (fr) Machine à piston ayant des cylindres en étoile
DE1577536A1 (de) Sandstrahlgeblaese
AT349744B (de) Misch- und ausgabevorrichtung
DE1255007B (de) Pistole zum Mischen und Abgeben eines aus mehreren Komponenten zusammengesetzten Materials
EP0075258A2 (fr) Appareil pour le revêtement d'objets par un liquide
EP0573957A1 (fr) Dispositif pour l'usinage au jet abrasif de matériaux
DE2063682A1 (de) Armatur für Unterputzmontage
DE3007290A1 (de) Duesenkopf

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19900625

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR IT LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19921231