FR2459679A1 - Mixer for charging liq. prod. in fixed proportion into flowing liq. - incorporating means of reducing pressure drop when suction of liq. prod. is dispensed with - Google Patents
Mixer for charging liq. prod. in fixed proportion into flowing liq. - incorporating means of reducing pressure drop when suction of liq. prod. is dispensed with Download PDFInfo
- Publication number
- FR2459679A1 FR2459679A1 FR7916565A FR7916565A FR2459679A1 FR 2459679 A1 FR2459679 A1 FR 2459679A1 FR 7916565 A FR7916565 A FR 7916565A FR 7916565 A FR7916565 A FR 7916565A FR 2459679 A1 FR2459679 A1 FR 2459679A1
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- Prior art keywords
- valve
- liq
- prod
- mixer
- pressure
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Classifications
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/40—Mixing liquids with liquids; Emulsifying
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Dispersion Chemistry (AREA)
Abstract
Description
L'invention concerne un mélangeur pour l'introduction d'un produit liquide en proportion constante déterminée dans une canalisation de liquide sous pression. The invention relates to a mixer for introducing a liquid product in a constant proportion determined in a liquid pipe under pressure.
L'invention est applicable en particulier à l'obtention in situ d'un mélange eau-émNlseur de lutte contre l'incendie à partir d'eau et d'un produit émulseur. The invention is applicable in particular to obtaining in situ a fire-fighting water-emulsion mixture from water and an emulsifier product.
On connaît un mélangeur comprenant un corps qui se raccorde à la canalisation et qui définit un canal direct et un canal de dérivation, le canal direct étant formé en venturi et comprenant ainsi une zone de dépression, une cavité d'aspiration du produit liquide débouchant dans la zone de dépression, un robinet pour régler le débit de produit liquide arrivant dans la cavité d'aspiration, et un clapet monté dans le canal de dérivation et agencé pour en régler la section de passage de manière à maintenir constant le rapport entre la pression en amont du dit clapet et la pression en aval. A mixer is known comprising a body which connects to the pipe and which defines a direct channel and a bypass channel, the direct channel being formed as a venturi and thus comprising a depression zone, a suction cavity of the liquid product opening into the the vacuum zone, a valve for regulating the flow of liquid product arriving in the suction cavity, and a valve mounted in the bypass channel and arranged to regulate the passage section so as to maintain constant the ratio between the pressure upstream of said valve and downstream pressure.
Ce mélangeur connu fonctionne de façon satisfaisante. Toutefois, la perte de charge est importante dans le canal direct du fait de sa conformation en venturi. Lorsque le mélangeur est monté sur une canalisation fixe et qu'on ne souhaite pas injecter de produit liquide, par exemple dans le cas où l'on veut alimenter des lances à eau, on ferme le robinet réglant le débit de produit liquide pour supprimer l'aspiration. Mais ce mode de fonctionnement est désavantageux étant donné la perte de charge élevée précitée. This known mixer works satisfactorily. However, the pressure drop is important in the direct channel due to its conformation in venturi. When the mixer is mounted on a fixed pipe and it is not desired to inject liquid product, for example in the case where it is necessary to supply water lances, the valve regulating the flow of liquid product is closed to remove the liquid. suction. But this mode of operation is disadvantageous given the aforementioned high load loss.
L'invention vise, dans un mélangeur du type décrit ci-dessus, à réduire la perte de charge lorsque l'aspiration de produit liquide est supprimée. The invention aims, in a mixer of the type described above, to reduce the pressure drop when the suction of liquid product is removed.
Dans sa définition la plus générale, l'invention consiste à coupler le réglage du robinet à la position du clapet de manière que la fermeture du robinet place automatiquement le clapet dans la position d'ouverture maximale du canal de dérivation. In its most general definition, the invention consists in coupling the adjustment of the valve to the position of the valve so that closing the valve automatically places the valve in the maximum open position of the bypass channel.
La perte de charge dans le canal de dérivation étant beaucoup plus faible que dans le canal direct, on arrive ainsi à une réduction substantielle de la perte de charge due au mélangeur. Since the pressure drop in the bypass channel is much lower than in the direct channel, this leads to a substantial reduction in the pressure drop due to the mixer.
L'invention sera bien comprise à la lecture de la description suivante, pour la compréhension de laquelle on se reportera aux dessins annexés. The invention will be better understood on reading the following description, for the understanding of which reference will be made to the accompanying drawings.
Dans les dessins
- la fig. 1 est une vue en coupe longitudinale d'un mélangeur selon l'invention, certains des éléments étant omis, la coupe étant prise selon le plan I-I de la figure 2
- la fig. 2 est une vue en coupe transversale selon le plan
II-II de la figure 1, dans laquelle sont illustrées les deux positions extrêmes du clapet
- la fig. 3 est une coupe suivant le plan III-III de la figure 2
- les figs. 4 et 4b sont des vues de dessus partielles du mélangeur de la figure 2, qui illustrent les positions extrêmes du levier de manoeuvre du robinet
- la fig. 5 illustre une application typique du mélangeur selon l'invention.In the drawings
- fig. 1 is a longitudinal sectional view of a mixer according to the invention, some of the elements being omitted, the section being taken along the plane II of FIG. 2
- fig. 2 is a cross-sectional view along the plane
II-II of Figure 1, in which are illustrated the two extreme positions of the valve
- fig. 3 is a section along the plane III-III of FIG.
- figs. 4 and 4b are partial top views of the mixer of FIG. 2, which illustrate the extreme positions of the valve operating lever.
- fig. 5 illustrates a typical application of the mixer according to the invention.
Le mélangeur représente à la figure 1 est destiné à injeoter dans de l'eau sous pression un produit émulseur en proportion constante, comprise généralement entre 0 et 6 9%, en vue de la production d'un mélange eau-émulseur de lutte contre l'incendie. The mixer shown in FIG. 1 is intended to inject into a water under pressure an emulsifier product in a constant proportion, generally between 0 and 69%, with a view to the production of a water-emulsifier mixture for the control of water. 'fire.
Le raccordement du mélangeur aux canalisations d'amenée d'eau s'effectue par le raccord d'entrée 1 et le raccord de sortie 2 vissés sur le mélangeur. The mixer is connected to the water supply lines via the inlet connection 1 and the outlet connection 2 screwed onto the mixer.
le mélangeur comprend un corps 3 prolongé par un élément tubulaire 4 sur lequel est vissé le raccord de sortie 2. the mixer comprises a body 3 extended by a tubular element 4 on which the outlet fitting 2 is screwed.
Le corps comporte un alésage fileté 5 dans lequel sont vissés, du côté de l'entrée, une buse 6 pour accélérer la veine liquide, et du côté de la sortie, un ctne de diffusion 7 qu'en tcure l'élément tubulaire 4. The body comprises a threaded bore 5 into which are screwed, on the inlet side, a nozzle 6 to accelerate the liquid vein, and on the outlet side, a diffusion channel 7 which cuts the tubular element 4.
La buse 6 et le diffuseur 7 définissent un canal direct, symbolisé par le trait plein fléché, dans lequel une dépression est créée dans la zone 8 par effet de venturi. The nozzle 6 and the diffuser 7 define a direct channel, symbolized by the solid arrow line, in which a vacuum is created in the zone 8 by venturi effect.
Une chambre d'aspiration 9 de forme sensiblement semi-annulaire débouche dans la zcne de dépression 8, et le produit émulseur à injecter dans l'eau est amené dans la chambre d'aspiration par l'intermédiaire d'un robinet 10 assurant le réglage du débit, visible sur la figure 2. A suction chamber 9 of substantially semi-annular shape opens into the vacuum zone 8, and the emulsifier product to be injected into the water is brought into the suction chamber via a valve 10 providing adjustment. the flow, visible in Figure 2.
le produit liquide est contenu dans un réservoir, non repré senté ici, et arrive par l'orifice 11 constituant l'entrée du robinet 10. the liquid product is contained in a tank, not shown here, and arrives through the orifice 11 constituting the inlet of the tap 10.
Le corps 3 comporte d'autre part un conduit 12 à l'entrée duquel est prévu un filtre 13 et dont la sortie 14 débouche dans l'espace 15 ménagé entre le diffuseur 7 et l'élément tubulaire 4. The body 3 further comprises a conduit 12 at the input of which is provided a filter 13 and whose output 14 opens into the space 15 formed between the diffuser 7 and the tubular element 4.
Cela définit un canal de dérivation ou bypass qui est symbolisé sur la figure 1 par un trait pointillé fléché.This defines a bypass or bypass channel which is symbolized in FIG. 1 by a dotted arrow line.
Un clapet 16 est monté dans le bypass pour en faire varier la section de passage. le bypass comporte dans cette zone un alésage 17 prolongé par une chambre annulaire 18 de plus grand diamètre qui communique avec la sortie 14, et le clapet se termine à son extrémité inférieure par un disque circulaire 19 pouvant coulisser avec un faible jeu dans l'alésage 17. Un poussoir 20 dont l'extrémité 21 fait saillie par rapport au corps 3 est vissé au clapet 16 et une membrane en élastomère 22 a sa partie centrale bloquée entre le clapet 16 et le poussoir 20, cependant que sa partie périphérique est bloquée entre une rondelle 23 en butée contre un épaulement du corps 3 et un écrou 24 vissé dans le corps. A valve 16 is mounted in the bypass to vary the passage section. the bypass comprises in this zone a bore 17 extended by an annular chamber 18 of larger diameter which communicates with the outlet 14, and the valve ends at its lower end by a circular disc 19 slidable with a small clearance in the bore 17. A pusher 20 whose end 21 protrudes from the body 3 is screwed to the valve 16 and an elastomeric membrane 22 has its central portion blocked between the valve 16 and the pusher 20, while its peripheral portion is blocked between a washer 23 abuts against a shoulder of the body 3 and a nut 24 screwed into the body.
L'écrou 24 comporte un épaulement qui fait butée pour un épaulement du poussoir, définissant ainsi une position extrême du clapet correspondant à la fermeture du bypass. A l'opposé, le fond de la chambre 18 fait butée pour le disque 19, le clapet étant alors dans sa position d'ouverture maximale. Ces deux positions extrêmes sont représentées sur la figure 2, la position de fermeture maximale étant figurée en trait mixte,
Le r8le du clapet 16 est de réguler la quantité d'eau passant par le bypass. La face supérieure du disque 19 est soumise à la pression d'entrée P1 diminuée des pertes de charge, soit P'1 > cependant que la face inférieure du disque 19 est soumise à la pression de sortie P2 augmentée des pertes de charge, soit Pt2. The nut 24 has a shoulder which abuts for a shoulder of the pusher, thus defining an extreme position of the valve corresponding to the closure of the bypass. In contrast, the bottom of the chamber 18 is a stop for the disk 19, the valve being then in its maximum open position. These two extreme positions are shown in FIG. 2, the maximum closure position being shown in dashed lines,
The role of the valve 16 is to regulate the amount of water passing through the bypass. The upper face of the disk 19 is subjected to the inlet pressure P1 minus the pressure losses, ie P'1>, however, the lower face of the disk 19 is subjected to the outlet pressure P2 increased by the pressure drops, ie Pt2 .
Dans ces conditions le clapet 16 occupe toujours une position d'équilibre hydraulique correspondaift à un rapport P'1 / P'2 constant. il en résulte que le pourcentage de produit liquide aspiré, qui dépend de la chute de pression entre l'entrée et la sortie du mélangeur, reste constant quelle que soit la charge hydraulique raccordée à la sortie du mélangeur et la pression d'utilisation, pourvu que celle-ci reste comprise dans les valeurs courantes (entre 3 et 15 bars) pour l'application envisagée. Under these conditions the valve 16 always occupies a position of hydraulic equilibrium correspondingaift a constant ratio P'1 / P'2. as a result, the percentage of liquid product sucked up, which depends on the pressure drop between the inlet and the outlet of the mixer, remains constant regardless of the hydraulic load connected to the outlet of the mixer and the operating pressure, provided that it remains within the current values (between 3 and 15 bar) for the intended application.
Le robinet 10 de réglage du débit d'aspiration comprend un obturateur 27 disposé parallèlement au clapet 16 et du mtme côté du corps 3. Un levier de manoeuvre 28 est fixé à l'obturateur 27, lequel est vissé par une partie filetée 29 dans un écrou 30 luimême vissé dans le corps. L'obturateur 27, lorsqu'on tourne le levier 28, se rapproche d'un siège 31 en appui sur un épaulement 32 du corps en réduisant la section de passage du conduit d'aspi ration, et dans la position extrême, l'obturateur 27 entre en contact par un bourrelet en élastomère 33 avec le siège 31, ce qui réalise l'obturation du conduit d'aspiration menant à la chambre d'aspiration 9. The suction flow control valve 10 comprises a shutter 27 arranged parallel to the valve 16 and the same side of the body 3. An operating lever 28 is fixed to the shutter 27, which is screwed by a threaded portion 29 in a nut 30 itself screwed into the body. The shutter 27, when the lever 28 is turned, approaches a seat 31 resting on a shoulder 32 of the body by reducing the passage section of the suction duct, and in the extreme position, the shutter 27 comes into contact with an elastomer bead 33 with the seat 31, which closes the suction duct leading to the suction chamber 9.
On notera que le siège 31 n'est pas fixé au corps, mais peut coulisser dans son alésage 34 en direction de l'obturateur 27. Note that the seat 31 is not fixed to the body, but can slide in its bore 34 in the direction of the shutter 27.
Cet agencement permet d'obturer le conduit d'aspiration lorsqu'une contre-pression se produit dans la chambre d'aspiration 9.This arrangement makes it possible to close off the suction duct when a back pressure occurs in the suction chamber 9.
n'autre part, l'extrémité 35 de l'obturateur 27 est profilée de façon spéciale pour que la variation du débit d'aspiration par rapport à l'angle de rotation de l'obturateur 27 soit sensiblement linéaire. Cela permet de graduer de façon linéaire la plaque de graduation 36 fixée sur le corps. on the other hand, the end 35 of the shutter 27 is specially profiled so that the variation of the suction flow rate with respect to the rotation angle of the shutter 27 is substantially linear. This makes it possible to linearly scale the graduation plate 36 fixed on the body.
Le déplacement angulaire du levier 28 de la position d'ouverture maximale, représentée sur la figure 4 à la position de fermeture, représentée sur la figure 4b, est d'environ un demi-tour, et ces positions extrêmes sont définies par des moyens de butée. The angular displacement of the lever 28 from the maximum open position, shown in FIG. 4 to the closed position, shown in FIG. 4b, is approximately one half-turn, and these extreme positions are defined by means of stop.
A cet effet, un pion 37 est fixé sur le dessus du corps, et ce pion coopère avec un doigt 38 prolongeant la partie centrale 39 du levier sur un côté, dans la position d'ouverture maximale, et avec la paroi 40 du levier dans la position d'obturation. On remarquera que le levier comporte deux parois 40 et 41 s'étendant à partir de la partie centrale 39 emmanchée sur l'extrémité de l'ob- turateur 27, et que la paroi 41 est interrompue en 42 pour que le pion 37 n'entrave pas la rotation du levier.For this purpose, a pin 37 is fixed on the top of the body, and this pin cooperates with a finger 38 extending the central portion 39 of the lever on one side, in the maximum open position, and with the wall 40 of the lever in the shutter position. It will be noted that the lever comprises two walls 40 and 41 extending from the central portion 39 fitted on the end of the obturator 27, and that the wall 41 is interrupted at 42 so that the pin 37 is does not hinder the rotation of the lever.
En outre, le levier 28 présente un prolongement 43 disposé de manière à se trouver au-dessus du poussoir 20 du clapet 16 lorsque le levier 28 est en position de fermeture. In addition, the lever 28 has an extension 43 disposed to be above the pusher 20 of the valve 16 when the lever 28 is in the closed position.
Le prolongement 43 a sa surface inférieure constituée par une rampe inclinée 44, représentée sur la figure 3, et cette rampe se raccorde à une surface 45 orthogonale à l'axe du clapet 16. The extension 43 has its lower surface constituted by an inclined ramp 44, shown in FIG. 3, and this ramp connects to a surface 45 orthogonal to the axis of the valve 16.
L'ensemble de la rampe 44 et de la surface 45 constitue une came qui, lorsqu'on tourne le levier, repousse le poussoir 20 vers l'intérieur du corps. The assembly of the ramp 44 and the surface 45 constitutes a cam which, when the lever is turned, pushes the pusher 20 towards the inside of the body.
Lorsque le levier 28 est dans sa position de fermeture, comme représenté sur la figure 49, l'extrémité du poussoir 20 est en contact avec la surface 45 et est repoussée en direction de l'intérieur du corps, cette position du poussoir correspondant à la venue en butée du disque 19 du clapet avec le fond de la chambre annulaire 18. Le clapet se trouve ainsi placé automatiquement dans la position d'ouverture maximale du bypass. When the lever 28 is in its closed position, as shown in Figure 49, the end of the pusher 20 is in contact with the surface 45 and is pushed towards the inside of the body, this position of the pusher corresponding to the abutting the disk 19 of the valve with the bottom of the annular chamber 18. The valve is thus automatically placed in the maximum open position of the bypass.
Cet agencement présente l'avantage de réduire très sensiblement la perte de charge due au mélangeur lorsqu'on veut obtenir à la sortie de 1' eau et non un mélange eau-émulseur. Pour ce faire, on ferme l'aspiration en agissant sur le levier 28. Grace au fait que le clapet 16 est alors placé dans la position correspondant à la section de passage maximale du bypass, une proportion importante du débit d'eau passe par le bypass et donc une proportion moindre passe par le canal direct. Ceci réduit la perte de charge due au mélangeur, car la perte de charge dans le canal direct conformé en venturi, est nettement plus élevée que dans le bypass. This arrangement has the advantage of very substantially reducing the pressure drop due to the mixer when it is desired to obtain at the outlet of the water and not a water-emulsifier mixture. To do this, the suction is closed by acting on the lever 28. Thanks to the fact that the valve 16 is then placed in the position corresponding to the maximum passage section of the bypass, a significant proportion of the flow of water passes through the bypass and therefore a smaller proportion goes through the direct channel. This reduces the pressure drop due to the mixer, because the pressure drop in the direct duct-shaped venturi is significantly higher than in the bypass.
Cette action d'ouverture maximale du bypass a en outre pour effet de créer une contre-pression dans la chambre d'aspiration 9, car la vitesse de la veine d'eau dans le venturi diminue et ainsi la pression dans la chambre 9 remonte au-dessus de la pression atmosphérique. Cette contre-pression pousse le siège 31 contre l'obturateur 27 et renforce 11 obturation du conduit d'aspiration. This action of maximum opening of the bypass further has the effect of creating a counter-pressure in the suction chamber 9, because the speed of the water vein in the venturi decreases and thus the pressure in the chamber 9 goes back to above the atmospheric pressure. This back pressure pushes the seat 31 against the shutter 27 and reinforces 11 closing of the suction duct.
De ce fait, le mélangeur selon l'invention sera incorporé de façon avantageuse à une installation fixe de lutte contre l'incendie permettant d'obtenir soit un mélange eau-éxilseur, saint de l'eau, et fonctionnant dans des conditions satisfaisantes quel que soit le pourcentage de produit émulseur. As a result, the mixer according to the invention will advantageously be incorporated in a fixed fire-fighting installation making it possible to obtain either a mixture of water-water, water and water, and operating under satisfactory conditions whatever the percentage of foam product.
La figure 5 représente à titre d'exemple une installation fixe de lutte contre l'incendie qui comprend un dévidoir à alimentation axiale 50. Le mélangeur, dont le levier de manoeuvre 28 est en position intermédiaire, est monté sur la canalisation d'amenée 51 en amont du dévidoir. On a représenté sur la figure 5 le réservoir de produit émulseur 52 et la canalisation 59 d'amenée du produit émulseur. FIG. 5 represents, by way of example, a fixed fire-fighting installation which comprises an axially-fed reel 50. The mixer, whose operating lever 28 is in the intermediate position, is mounted on the supply line 51 upstream of the reel. There is shown in Figure 5 the emulsifier product tank 52 and the line 59 for feeding the emulsifier product.
La sortie 54 du dévidoir 50 peut être raccordée soit à des lances à mousse telles que 55, soit à des lances à eau. The outlet 54 of the reel 50 can be connected to either foam lances such as 55 or water lances.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7916565A FR2459679A1 (en) | 1979-06-27 | 1979-06-27 | Mixer for charging liq. prod. in fixed proportion into flowing liq. - incorporating means of reducing pressure drop when suction of liq. prod. is dispensed with |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7916565A FR2459679A1 (en) | 1979-06-27 | 1979-06-27 | Mixer for charging liq. prod. in fixed proportion into flowing liq. - incorporating means of reducing pressure drop when suction of liq. prod. is dispensed with |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2459679A1 true FR2459679A1 (en) | 1981-01-16 |
| FR2459679B1 FR2459679B1 (en) | 1983-07-22 |
Family
ID=9227180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7916565A Granted FR2459679A1 (en) | 1979-06-27 | 1979-06-27 | Mixer for charging liq. prod. in fixed proportion into flowing liq. - incorporating means of reducing pressure drop when suction of liq. prod. is dispensed with |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2459679A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2521869A1 (en) * | 1982-02-25 | 1983-08-26 | Debreceni Mezoegazdasagi | DEVICE FOR FORMING FOAM COMPRISING A CONTROL APPARATUS, IN PARTICULAR FOR FOAM MARKING IN THE AGRICULTURAL DOMAIN |
| FR2612084A1 (en) * | 1987-03-12 | 1988-09-16 | Djet Sarl | Device for metered injection of an adjuvant into a liquid flow |
| FR2619023A1 (en) * | 1987-08-07 | 1989-02-10 | Lamort E & M | PRESSURE MIXER INJECTOR |
| EP0404595A1 (en) * | 1989-06-23 | 1990-12-27 | Minnesota Mining And Manufacturing Company | Self cleaning apparatus for preparing aqueous air foams |
| EP0408931A2 (en) * | 1989-07-19 | 1991-01-23 | Total Walther Feuerschutz GmbH | Mixing device |
| DE10160709A1 (en) * | 2001-12-11 | 2003-06-18 | Salzgitter Anlagenbau Gmbh | Mixing assembly to combine a gas and a liquid in a supercritical range has a lens sealing unit with a venturi jet and a diffuser to take the gas feed with a liquid feed in a sealed link to the outflow pipe for the mixture |
| WO2020093091A1 (en) | 2018-11-06 | 2020-05-14 | Ozone 1 Pty Ltd | Flow control device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105233744A (en) * | 2015-10-29 | 2016-01-13 | 宝鸡航天动力泵业有限公司 | Blending device for high-pressure foams and mud |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2164153A (en) * | 1936-09-18 | 1939-06-27 | Friedrich Wilhelm | Apparatus for producing fire extinguishing foam |
| FR916373A (en) * | 1945-10-24 | 1946-12-04 | Emulsified fluid generator usable in the form of air foam | |
| DE912657C (en) * | 1944-08-26 | 1954-07-05 | Allg Feuerloescher Ag In Liqu | Device for regulating the amount of foaming agent to be added to the water when generating air foam for fire extinguishing purposes |
| US2953160A (en) * | 1958-08-20 | 1960-09-20 | Akron Brass Mfg Co Inc | Bypass proportioner |
| US3547409A (en) * | 1968-05-23 | 1970-12-15 | Jacuzzi Bros Inc | Assembly for producing detergent foam |
-
1979
- 1979-06-27 FR FR7916565A patent/FR2459679A1/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2164153A (en) * | 1936-09-18 | 1939-06-27 | Friedrich Wilhelm | Apparatus for producing fire extinguishing foam |
| DE912657C (en) * | 1944-08-26 | 1954-07-05 | Allg Feuerloescher Ag In Liqu | Device for regulating the amount of foaming agent to be added to the water when generating air foam for fire extinguishing purposes |
| FR916373A (en) * | 1945-10-24 | 1946-12-04 | Emulsified fluid generator usable in the form of air foam | |
| US2953160A (en) * | 1958-08-20 | 1960-09-20 | Akron Brass Mfg Co Inc | Bypass proportioner |
| US3547409A (en) * | 1968-05-23 | 1970-12-15 | Jacuzzi Bros Inc | Assembly for producing detergent foam |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2521869A1 (en) * | 1982-02-25 | 1983-08-26 | Debreceni Mezoegazdasagi | DEVICE FOR FORMING FOAM COMPRISING A CONTROL APPARATUS, IN PARTICULAR FOR FOAM MARKING IN THE AGRICULTURAL DOMAIN |
| FR2612084A1 (en) * | 1987-03-12 | 1988-09-16 | Djet Sarl | Device for metered injection of an adjuvant into a liquid flow |
| FR2619023A1 (en) * | 1987-08-07 | 1989-02-10 | Lamort E & M | PRESSURE MIXER INJECTOR |
| EP0305251A1 (en) * | 1987-08-07 | 1989-03-01 | E. + M. Lamort Société Anonyme dite: | Injector mixer under pressure |
| EP0404595A1 (en) * | 1989-06-23 | 1990-12-27 | Minnesota Mining And Manufacturing Company | Self cleaning apparatus for preparing aqueous air foams |
| EP0408931A2 (en) * | 1989-07-19 | 1991-01-23 | Total Walther Feuerschutz GmbH | Mixing device |
| EP0408931A3 (en) * | 1989-07-19 | 1991-07-24 | Total Walther Feuerschutz Gmbh | Mixing device |
| DE10160709A1 (en) * | 2001-12-11 | 2003-06-18 | Salzgitter Anlagenbau Gmbh | Mixing assembly to combine a gas and a liquid in a supercritical range has a lens sealing unit with a venturi jet and a diffuser to take the gas feed with a liquid feed in a sealed link to the outflow pipe for the mixture |
| DE10160709B4 (en) * | 2001-12-11 | 2015-12-17 | Tpi - Tecnimont Planung Und Industrieanlagenbau Gmbh | Apparatus for mixing a gaseous and a liquid component in the supercritical region |
| WO2020093091A1 (en) | 2018-11-06 | 2020-05-14 | Ozone 1 Pty Ltd | Flow control device |
| EP3877080A4 (en) * | 2018-11-06 | 2022-08-17 | Ozone 1 Pty Ltd | Flow control device |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2459679B1 (en) | 1983-07-22 |
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