EP0687197A1 - Apparatus for feeding and diffusing air or another gas into a liquid - Google Patents

Apparatus for feeding and diffusing air or another gas into a liquid

Info

Publication number
EP0687197A1
EP0687197A1 EP94907608A EP94907608A EP0687197A1 EP 0687197 A1 EP0687197 A1 EP 0687197A1 EP 94907608 A EP94907608 A EP 94907608A EP 94907608 A EP94907608 A EP 94907608A EP 0687197 A1 EP0687197 A1 EP 0687197A1
Authority
EP
European Patent Office
Prior art keywords
liquid
air
shaft
gas
water tubes
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.)
Granted
Application number
EP94907608A
Other languages
German (de)
French (fr)
Other versions
EP0687197B1 (en
Inventor
Raymond Berchotteau
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0687197A1 publication Critical patent/EP0687197A1/en
Application granted granted Critical
Publication of EP0687197B1 publication Critical patent/EP0687197B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • 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
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B01F23/23314—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a hollow stirrer element
    • 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
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/2366—Parts; Accessories
    • B01F23/2368—Mixing receptacles, e.g. tanks, vessels or reactors, being completely closed, e.g. hermetically closed
    • 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
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B01F23/23311—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a hollow stirrer axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
    • B01F27/192—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements

Definitions

  • the present invention relates to an apparatus for introducing and diffusing air or another gas into a liquid.
  • the introduction and diffusion of air into a liquid is currently carried out using compressors, blowers, turbines, which supply air under pressure; pipes transport the compressed air to the place of use, perforated ramps, diffusers or other systems producing more or less large bubbles to be in contact with the liquid.
  • Turbines of other types are submerged with their electric drive motors located in a sealed enclosure; the turbine is connected to the outside of the liquid by pipeline, the electric motor by cables with tight connection; they allow the introduction of air or gas into a liquid.
  • the water pumps are statically mounted on pressurized pipes; they allow the introduction of air or any other gas into the liquid passing through the water pump.
  • the device according to the invention overcomes some of these drawbacks; it is composed of several water tubes placed in a crown, mechanically connected 7 to the base of a hollow drive shaft 6; the cavity of the water tubes 3 where the vacuum is created is connected to the interior of the tree by conduits 5, the lower end of the tree being obstructed. Holes are arranged at the periphery of the upper part of the shaft, the end of the shaft being coupled 11 to a drive member, electric motor 9 in direct drive or by means of a gear motor 10, or other drive system.
  • this assembly When this assembly is given using a motor 9 a certain speed of rotation, it creates at the inlet of the water tubes and on the nose 2 of the cone of the water tubes, a pressure of the greater the faster the speed of rotation in the liquid; at the exit of the nose of the cones, there is a jet directed towards the outlet tubing of the water tubes; the force of the jet in the tube 4 creates a vacuum in the capacity 3 located around the nose of the water tubes.
  • This vacuum thus created will, via the tubes 5 located in the supports 7, communicate inside the drive shaft 6 to the orifices 8 located at the top of the shaft; thus, the vacuum created by the water tubes will allow air to enter through the openings 8 inside the hollow drive shaft 6, then through conduits 5 to the vacuum capacity 3 of the water tubes ; from there, the air will be sucked in by the jets of liquid leaving the nose 2 of the water tubes; the air will be mixed with the liquid in the outlet pipe 4 of the water tubes; the air plus water mixture thus created will be diffused in the liquid of the tank or of the capacity where the device is placed.
  • a propeller 18 (Figure 3) can be fixed on the shaft above the set of water tubes, which will direct towards the bottom the liquid / air mixture leaving the pipes 4 of the water tubes, and d '' obtain a vigorous mixing and homogenization of the air in the liquid.
  • the water tubes can be integrated into the blades of a propeller, which will direct the liquid / air mixture towards the bottom, which will allow better contact of the liquid with the air diffused in the liquid by the water tubes.
  • RECTIFIED SHEET (RULE 91) ISA / EP liquid surface creates a depression greater than the height of the liquid above it.
  • the level of the liquid in the tree will reach this first set of tubes to diffuse the air into the liquid.
  • the device according to the invention to work, that is to say that the water tubes begin to diffuse air into the liquid, it is necessary to give the assembly a certain speed of rotation to obtain on the nose tubes with water a pressure allowing to have in the vacuum cavity a depression at least equal to the depth of immersion in the liquid, and a pressure at the outlet of the water tubes also greater than the depth of immersion.
  • the quantity of air or gas drawn in and diffused into the liquid by the water tubes will be all the more important as the pressure on the nose of the water tubes will be greater, relatively to the speed of rotation of the assembly, therefore at the speed of penetration of the water tubes in the liquid.
  • a cylinder is fixed under the drive motor or under the geared motor 10 in a perfectly sealed manner 17; the lower part of the cylinder plunges into the liquid and forms a hydraulic seal on the side of the cylinder; a tube 15 makes it possible to supply air or any other gas, whatever it is desired to diffuse into the liquid, to subject this liquid to a particular treatment.
  • the apparatus for diffusing air or another gas into a liquid at a certain depth is characterized by a hollow shaft 6 obstructed at its lower part, orifices 8 at its upper lateral part located above the liquid, and of which the upper end is mechanically connected to the rotary drive member 9, 10; this tree is equipped at its base with several water tubes 1, 2, 3, 4 disposed peripherally at a certain distance from the axis of the tree and fixed to this tree by supports.
  • the capacity of the water tubes where the vacuum is created when the assembly is in rotation, is connected to the interior of the hollow shaft by conduits 5 integral with the supports of the water tubes 7.
  • connection with the outside is carried out using a tube 19 through which the axis of the drive shaft passes; a space between the shaft and the tube allows the passage of air or gas, the base of the tube being connected to the conduits of the supports of the water tubes with an inner seal of the base of the tube with the liquid in which the 'together.
  • this allows:
  • This cavity where the vacuum is created located at the periphery slightly withdrawn from the outlet nose of each water pump, is connected to the inside of the hollow drive shaft or to the space between the tube and the drive shaft, by a conduit located in the assembly and support piece between each water pump and the inside of the shaft, or in the space between the tube and the shaft.
  • the shaft and its water pump equipment associated with an electric motor form an active assembly, without any moving mechanical part, other than the rotation of the shaft / water pump assembly in the liquid; there is no wearing part other than the drive mechanism of the shaft, located above the liquid, therefore very accessible.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
  • Supports For Plants (AREA)

Abstract

An apparatus consisting of a hollow shaft (6) with water pumps peripherally attached to the end thereof at a certain distance therefrom, said water pumps having vacuum pockets (3) communicating with the inside of the shaft (6) via ducts (5). The lower portion of the shaft is plugged and its upper portion has peripheral perforations (8) providing free access for air or another gas into the shaft so that it can reach the vacuum pockets (3) of the water pumps. The top end of the shaft is coupled to an electric motor (9) either directly or via a motor reducer (10). When the shaft and the water pumps are rotating within a liquid, the liquid pressure at the tips (2) of the water pumps creates a vacuum, whereby fine bubbles of air or another gas can be fed into and diffused through the liquid at the submerged depth of said water pumps.

Description

APPAREIL POUR INTRODUIRE ET DIFFUSER DE L'AIR OU UN AUTRE GAZ DANS UN LIQUIDE APPARATUS FOR INTRODUCING AND DIFFUSING AIR OR OTHER GASES IN A LIQUID
La présente invention concerne un appareil pour introduire et diffuser de l'air ou un autre gaz dans un liquide. L'introduction et la diffusion de l'air dans un liquide sont actuellement réalisées à l'aide de compresseurs, surpresseurs, turbines, qui fournissent de l'air sous pression ; des canalisations transportent l'air ainsi comprimé vers le lieu d'utilisation, des rampes perforées, des diffuseurs ou d'autres systèmes produisant des bulles plus ou moins grosses pour être en contact avec le liquide.The present invention relates to an apparatus for introducing and diffusing air or another gas into a liquid. The introduction and diffusion of air into a liquid is currently carried out using compressors, blowers, turbines, which supply air under pressure; pipes transport the compressed air to the place of use, perforated ramps, diffusers or other systems producing more or less large bubbles to be in contact with the liquid.
Des turbines de surface sont aussi utilisées ; elles projettent dans l'atmosphère le liquide pour le mettre en contact avec l'air à la pression atmosphérique.Surface turbines are also used; they project the liquid into the atmosphere to bring it into contact with air at atmospheric pressure.
Des turbines d'autres types sont immergées avec leurs moteurs d'entraînement électrique situés dans une enceinte étanche ; la turbine est reliée à l'extérieur du liquide par canalisation, le moteur électrique par câbles avec liaison étanche ; elles permettent l'introduction d'air ou de gaz dans un liquide.Turbines of other types are submerged with their electric drive motors located in a sealed enclosure; the turbine is connected to the outside of the liquid by pipeline, the electric motor by cables with tight connection; they allow the introduction of air or gas into a liquid.
Les trompes à eau sont montées en statique sur des canalisations sous pression ; elles permettent l'introduction d'air ou de tout autre gaz dans le liquide traversant la trompe à eau.The water pumps are statically mounted on pressurized pipes; they allow the introduction of air or any other gas into the liquid passing through the water pump.
Le dispositif selon l'invention permet de remédier à une partie de ces inconvénients ; il est composé de plusieurs trompes à eau placées en couronne, raccordées mécaniquement 7 à la base d'un arbre d'entraînement creux 6 ; la cavité des trompes à eau 3 où se crée le vide est reliée à l'intérieur de l'arbre par des conduits 5, l'extrémité basse de l'arbre étant obstruée. Des orifices sont aménagés à la périphérie de la partie haute de l'arbre, l'extrémité de l'arbre étant accouplée 11 à un organe d'entraînement, moteur électrique 9 en prise directe ou par l'intermédiaire d'un moto-réducteur 10, ou autre système d'entraînement.The device according to the invention overcomes some of these drawbacks; it is composed of several water tubes placed in a crown, mechanically connected 7 to the base of a hollow drive shaft 6; the cavity of the water tubes 3 where the vacuum is created is connected to the interior of the tree by conduits 5, the lower end of the tree being obstructed. Holes are arranged at the periphery of the upper part of the shaft, the end of the shaft being coupled 11 to a drive member, electric motor 9 in direct drive or by means of a gear motor 10, or other drive system.
FEUILLE RECTIFIEE (REGLE 91) ISA/EP L'ensemble des trompes à eau et une partie de l'arbre d'entraînement sont immergés verticalement dans un liquide ; le moteur 9 et la partie d'entraînement sont fixés à un support.RECTIFIED SHEET (RULE 91) ISA / EP The set of water pumps and part of the drive shaft are vertically immersed in a liquid; the motor 9 and the drive part are fixed to a support.
Lorsque l'on donne à cet ensemble à l'aide d'un moteur 9 une certaine vitesse de rotation, il se crée à l'entrée des trompes à eau et sur le nez 2 du cône des trompes à eau, une pression d'autant plus grande que la vitesse de rotation dans le liquide est plus rapide ; à la sortie du nez des cônes, il se produit un jet dirigé vers la tubulure de sortie des trompes à eau ; la force du jet dans la tubulure 4 crée un vide dans la capacité 3 située autour du nez des trompes à eau. Ce vide ainsi créé va, par l'intermédiaire des tubulures 5 situées dans les supports 7, se communiquer à l'intérieur de l'arbre d'entraînement 6 jusqu'aux orifices 8 situés à la partie haute de l'arbre ; ainsi, le vide créé par les trompes à eau permettra à l'air de pénétrer par les orifices 8 à l'intérieur de l'arbre d'entraînement creux 6, puis par des conduits 5 à la capacité de vide 3 des trompes à eau ; de là, l'air sera aspiré par les jets de liquide sortant du nez 2 des trompes à eau ; l'air sera mélangé au liquide dans la tubulure 4 de sortie des trompes à eau ; le mélange air plus eau ainsi créé sera diffusé dans le liquide de la cuve ou de la capacité où est disposé l'appareil.When this assembly is given using a motor 9 a certain speed of rotation, it creates at the inlet of the water tubes and on the nose 2 of the cone of the water tubes, a pressure of the greater the faster the speed of rotation in the liquid; at the exit of the nose of the cones, there is a jet directed towards the outlet tubing of the water tubes; the force of the jet in the tube 4 creates a vacuum in the capacity 3 located around the nose of the water tubes. This vacuum thus created will, via the tubes 5 located in the supports 7, communicate inside the drive shaft 6 to the orifices 8 located at the top of the shaft; thus, the vacuum created by the water tubes will allow air to enter through the openings 8 inside the hollow drive shaft 6, then through conduits 5 to the vacuum capacity 3 of the water tubes ; from there, the air will be sucked in by the jets of liquid leaving the nose 2 of the water tubes; the air will be mixed with the liquid in the outlet pipe 4 of the water tubes; the air plus water mixture thus created will be diffused in the liquid of the tank or of the capacity where the device is placed.
Une hélice 18 (Figure 3) peut être fixée sur l'arbre au-dessus de l'ensemble des trompes à eau, ce qui permettra de diriger vers le fond le mélange liquide/air sortant des tubulures 4 des trompes à eau, et d'obtenir un mélange et une homogénéisation énergique de l'air dans le liquide. Les trompes à eau peuvent être intégrées dans les pales d'une hélice, ce qui orientera le mélange liquide/air vers le fond, ce qui permettra un meilleur contact du liquide avec l'air diffusé dans le liquide par les trompes à eau.A propeller 18 (Figure 3) can be fixed on the shaft above the set of water tubes, which will direct towards the bottom the liquid / air mixture leaving the pipes 4 of the water tubes, and d '' obtain a vigorous mixing and homogenization of the air in the liquid. The water tubes can be integrated into the blades of a propeller, which will direct the liquid / air mixture towards the bottom, which will allow better contact of the liquid with the air diffused in the liquid by the water tubes.
Plusieurs groupes de trompes à eau peuvent être montés sur le même arbre (Figure 4), associés ou non à des hélices, ce qui permet d'introduire plus profondément de l'air dans un liquide. Le fonctionnement est le suivant : le premier ensemble de trompes à eau placé le plus près de laSeveral groups of water pumps can be mounted on the same shaft (Figure 4), associated or not with propellers, which allows air to be introduced more deeply into a liquid. The operation is as follows: the first set of water tubes placed closest to the
FEUILLE RECTIFIEE (REGLE 91) ISA/EP surface du liquide crée une dépression supérieure à la hauteur du liquide situé au-dessus. Le niveau du liquide dans l'arbre atteindra ce premier ensemble de trompes pour diffuser l'air dans le liquide. Pour que le deuxième ensemble de trompes à eau fonctionne, il créera une dépression supérieure à la hauteur de liquide correspondant à la distance entre les deux ensembles de trompes à eau montés sur le même arbre et la pression du mélange liquide/air sortant des tubulures des trompes à eau doit être supérieure à la hauteur d'immersion dans le liquide.RECTIFIED SHEET (RULE 91) ISA / EP liquid surface creates a depression greater than the height of the liquid above it. The level of the liquid in the tree will reach this first set of tubes to diffuse the air into the liquid. For the second set of water pumps to work, it will create a vacuum greater than the height of liquid corresponding to the distance between the two sets of water pumps mounted on the same shaft and the pressure of the liquid / air mixture leaving the tubing of the Water pumps should be greater than the height of immersion in the liquid.
Plusieurs trompes à eau peuvent être montées sur le même bras de raccordement à l'arbre, en série, pour augmenter la quantité d'air ou de gaz introduite dans le liquide, les capacités de vide des trompes à eau étant reliées en série, puis par un conduit, à l'intérieur de l'arbre d'entraînement de l'ensemble.Several water pumps can be mounted on the same connection arm to the shaft, in series, to increase the amount of air or gas introduced into the liquid, the vacuum capacities of the water pumps being connected in series, then by a conduit, inside the drive shaft of the assembly.
Pour que le dispositif selon l'invention fonctionne, c'est à dire que les trompes à eau commencent à diffuser de l'air dans le liquide, il faut donner à l'ensemble une certaine vitesse de rotation pour obtenir sur le nez des trompes à eau une pression permettant d'avoir dans la cavité de vide une dépression au moins égale à la profondeur d'immersion dans le liquide, et une pression à la sortie des trompes à eau également supérieure à la profondeur d'immersion.For the device according to the invention to work, that is to say that the water tubes begin to diffuse air into the liquid, it is necessary to give the assembly a certain speed of rotation to obtain on the nose tubes with water a pressure allowing to have in the vacuum cavity a depression at least equal to the depth of immersion in the liquid, and a pressure at the outlet of the water tubes also greater than the depth of immersion.
La quantité d'air ou de gaz aspirée et diffusée dans le liquide par les trompes à eau sera d'autant plus importante que la pression sur le nez des trompes à eau sera plus grande, relativement à la vitesse de rotation de l'ensemble, donc à la vitesse de pénétration des trompes à eau dans le liquide.The quantity of air or gas drawn in and diffused into the liquid by the water tubes will be all the more important as the pressure on the nose of the water tubes will be greater, relatively to the speed of rotation of the assembly, therefore at the speed of penetration of the water tubes in the liquid.
La dispersion et la diffusion de l'air dans le liquide, c'est à dire la grosseur des bulles, seront d'autant plus petites que la pression sur le nez, donc la vitesse de sortie des trompes à eau, sera grande, d'où un meilleur contact de l'air avec le liquide. Pour utiliser un autre gaz que l'air avec le système décrit précédemment, il faut créer au droit des orifices 8 d'entrée d'air dans l'arbre d'entraînement, une enceinte 16 les isolant de l'air comme indiquéThe dispersion and diffusion of air in the liquid, i.e. the size of the bubbles, will be smaller as the pressure on the nose, therefore the speed of exit of the water tubes, will be high, d '' where better contact of air with liquid. To use a gas other than air with the system described above, it is necessary to create, at the level of the air inlet orifices 8 in the drive shaft, an enclosure 16 isolating them from the air as indicated.
FEUILLE RECTIFIEE (REGLE 91) ISA EP Figure 3. Un cylindre est fixé sous le moteur d'entraînement ou sous le moto-réducteur 10 de façon parfaitement étanche 17 ; la partie basse du cylindre plonge dans le liquide et forme un joint hydraulique sur le côté du cylindre ; une tubulure 15 permet d'alimenter en air ou en tout autre gaz, celui que Ton désire diffuser dans le liquide, pour faire subir à ce liquide un traitement particulier.RECTIFIED SHEET (RULE 91) ISA EP Figure 3. A cylinder is fixed under the drive motor or under the geared motor 10 in a perfectly sealed manner 17; the lower part of the cylinder plunges into the liquid and forms a hydraulic seal on the side of the cylinder; a tube 15 makes it possible to supply air or any other gas, whatever it is desired to diffuse into the liquid, to subject this liquid to a particular treatment.
Suivant le gaz employé, il faut que les matériaux utilisés en contact avec le gaz résistent à celui-ci ou qu'ils soient protégés en conséquence. Ce dispositif permet, avec des appareils de contrôle mis en amont sur cette tubulure 15, de connaître très exactement la quantité de gaz ou d'air diffusée et introduite dans le liquide.Depending on the gas used, the materials used in contact with the gas must resist it or be protected accordingly. This device makes it possible, with control devices placed upstream on this tube 15, to know very exactly the quantity of gas or air diffused and introduced into the liquid.
L'appareil pour diffuser de l'air ou un autre gaz dans un liquide à une certaine profondeur se caractérise par un arbre creux 6 obstrué à sa partie inférieure, des orifices 8 à sa partie latérale supérieure située au-dessus du liquide, et dont l'extrémité supérieure est raccordée mécaniquement à l'organe d'entraînement en rotation 9, 10 ; cet arbre est équipé à sa base de plusieurs trompes à eau 1, 2, 3, 4 disposées périphériquement à une certaine distance de l'axe de l'arbre et fixées à cet arbre par des supports. La capacité des trompes à eau où se crée le vide lorsque l'ensemble est en rotation, est reliée à l'intérieur de l'arbre creux par des conduits 5 solidaires des supports des trompes à eau 7.The apparatus for diffusing air or another gas into a liquid at a certain depth is characterized by a hollow shaft 6 obstructed at its lower part, orifices 8 at its upper lateral part located above the liquid, and of which the upper end is mechanically connected to the rotary drive member 9, 10; this tree is equipped at its base with several water tubes 1, 2, 3, 4 disposed peripherally at a certain distance from the axis of the tree and fixed to this tree by supports. The capacity of the water tubes where the vacuum is created when the assembly is in rotation, is connected to the interior of the hollow shaft by conduits 5 integral with the supports of the water tubes 7.
Pour l'arrivée de l'air ou du gaz jusqu'aux trompes à eau, la liaison avec l'extérieur est réalisée à l'aide d'un tube 19 dans lequel passe l'axe de l'arbre d'entraînement ; un espace entre l'arbre et le tube permet le passage de l'air ou du gaz, la base du tube étant reliée aux conduits des supports des trompes à eau avec une étanchéité intérieure de la base du tube avec le liquide dans lequel plonge l'ensemble. En fonctionnement, cela permet :For the arrival of air or gas to the water tubes, the connection with the outside is carried out using a tube 19 through which the axis of the drive shaft passes; a space between the shaft and the tube allows the passage of air or gas, the base of the tube being connected to the conduits of the supports of the water tubes with an inner seal of the base of the tube with the liquid in which the 'together. In operation, this allows:
FEUILLE RECTIFIEE (REGLE 91) ISA/EP - d'introduire de l'air ou un autre gaz dans un liquide à une certaine profondeur, l'utilisation du cylindre étanche 16, comme indiqué Figure 3, permettant d'utiliser un autre gaz que l'air ;RECTIFIED SHEET (RULE 91) ISA / EP - Introducing air or another gas into a liquid at a certain depth, the use of the sealed cylinder 16, as shown in Figure 3, allowing the use of a gas other than air;
- de provoquer la mise en mouvement de l'ensemble du volume du liquide. En appliquant, par l'intermédiaire d'un moteur électrique, un mouvement de rotation à l'ensemble ainsi constitué et placé verticalement dans un liquide, il va se produire les actions suivantes :- to cause the entire volume of the liquid to move. By applying, via an electric motor, a rotational movement to the assembly thus formed and placed vertically in a liquid, the following actions will occur:
- Les trompes à eau, sous l'effet de la rotation de l'arbre et des trompes à eau fixées à l'extrémité, entraînées par le moteur électrique, vont atteindre dans le liquide une certaine vitesse ; le liquide, sous l'effet de la vitesse de rotation de l'ensemble des trompes à eau, atteindra une certaine pression sur le nez 2 des trompes à eau, ce qui produira, à la sortie des nez, un jet dirigé vers la tubulure de sortie de chaque trompe à eau 4. Ceci provoquera dans les cavités 3 de chaque trompe à eau une dépression d'autant plus grande que la vitesse de rotation sera importante, donc que la pression sur le nez des trompes à eau sera plus élevée.- The water pumps, under the effect of the rotation of the shaft and the water pumps attached to the end, driven by the electric motor, will reach a certain speed in the liquid; the liquid, under the effect of the speed of rotation of all the water tubes, will reach a certain pressure on the nose 2 of the water tubes, which will produce, at the exit of the nose, a jet directed towards the tubing outlet of each water pump 4. This will cause in the cavities 3 of each water pump a depression all the greater as the speed of rotation will be important, so that the pressure on the nose of the water pumps will be higher.
- Cette cavité où se crée le vide, située à la périphérie en léger retrait du nez de sortie de chaque trompe à eau, est reliée à l'intérieur de l'arbre d'entraînement creux ou à l'espace entre le tube et l'arbre d'entraînement, par un conduit situé dans la pièce d'assemblage et de support entre chaque trompe à eau et l'intérieur de l'arbre, ou dans l'espace entre le tube et l'arbre.- This cavity where the vacuum is created, located at the periphery slightly withdrawn from the outlet nose of each water pump, is connected to the inside of the hollow drive shaft or to the space between the tube and the drive shaft, by a conduit located in the assembly and support piece between each water pump and the inside of the shaft, or in the space between the tube and the shaft.
- Lorsque l'ensemble est à l'arrêt, il y a équilibre du liquide entre l'extérieur et l'intérieur de l'arbre où passe l'air qui va jusqu'aux trompes à eau lorsque celles-ci sont en rotation.- When the assembly is stopped, there is a balance of liquid between the outside and the inside of the tree through which the air passes which goes to the water tubes when they are rotating.
- A la mise en marche de l'ensemble, lorsque la pression du liquide sur le nez des trompes à eau aura atteint une certaine valeur, il y aura, dans un premier temps, évacuation du liquide se trouvant à l'intérieur de l'arbre jusqu'aux cavités 3 des trompes à eau, évacuation provoquée par la dépression créée par les jets à la sortie des nez des trompes à eau de l'ensemble. Une fois le liquide évacué, l'air ou le gaz sera aspiré par les- When switching on the unit, when the pressure of the liquid on the nose of the water tubes has reached a certain value, there will be, firstly, evacuation of the liquid inside the tree up to the cavities 3 of the water tubes, evacuation caused by the depression created by the jets at the outlet of the noses of the water tubes of the assembly. Once the liquid has been evacuated, air or gas will be sucked in by the
FEUILLE RECTIFIEE (REGLE 91) jets de liquide sortant du nez des trompes à eau ; ce mélange liquide/air est introduit dans le liquide dans lequel plonge l'ensemble.RECTIFIED SHEET (RULE 91) jets of liquid coming out of the nose of the water tubes; this liquid / air mixture is introduced into the liquid in which the assembly plunges.
- Plus la vitesse de rotation sera importante, plus la pression sur le nez des trompes à eau sera élevée, plus la dépression obtenue sera grande, donc plus le débit d'air ou de gaz sera grand ; il est donc possible de faire varier le débit d'air ou de gaz introduit dans le liquide en fonction de la vitesse de rotation de l'ensemble.- The higher the speed of rotation, the higher the pressure on the nose of the water tubes, the greater the vacuum obtained, the greater the air or gas flow will be; it is therefore possible to vary the air or gas flow introduced into the liquid as a function of the speed of rotation of the assembly.
- Plus la vitesse de rotation sera grande, plus la pression sera élevée sur le nez des trompes à eau, plus la diffusion de l'air ou du gaz sera grande, c'est à dire plus les bulles d'air ou de gaz seront petites et présenteront une surface de contact plus grande avec le liquide, donnant une plus grande efficacité.- The greater the speed of rotation, the higher the pressure on the nose of the water tubes, the greater the diffusion of air or gas, that is to say the more the bubbles of air or gas will be small and will have a larger contact surface with the liquid, giving greater efficiency.
Ce système apporte des possibilités bien distinctes :This system offers very distinct possibilities:
- apport d'air ou de gaz dans un liquide à une certaine profondeur, donc à une certaine pression, augmentant la dissolution du gaz ou de l'air utilisé ;- supply of air or gas to a liquid at a certain depth, therefore at a certain pressure, increasing the dissolution of the gas or air used;
- di ensionnement de l'appareil en fonction du volume ou du débit de liquide dans lequel doit être injecté l'air ou le gaz ;- dimensioning of the device according to the volume or flow of liquid into which the air or gas must be injected;
- le mouvement de rotation de l'appareil et l'apport d'air ou de gaz dans le liquide produira un brassage du liquide qui améliorera l'homogénéisation et le contact de l'air ou du gaz avec le liquide ;- the rotational movement of the device and the supply of air or gas into the liquid will produce mixing of the liquid which will improve the homogenization and the contact of air or gas with the liquid;
- plus la vitesse de rotation sera grande, plus la pression sur le nez des trompes à eau sera élevée, plus la dépression obtenue sera importante, plus le débit d'air ou de gaz sera grand, plus la diffusion de l'air ou du gaz dans le liquide sera efficace, car les bulles d'air ou de gaz seront plus petites, présentant une surface de contact plus grande avec le liquide, donc plus d'efficacité ;- the higher the speed of rotation, the higher the pressure on the nose of the water tubes, the greater the vacuum obtained, the greater the air or gas flow, the greater the diffusion of air or gas in the liquid will be effective, because the air or gas bubbles will be smaller, having a larger contact surface with the liquid, therefore more efficiency;
- possibilité d'asservir le débit d'air ou de gaz injecté au débit du liquide traversant une capacité par variation de la vitesse de rotation de l'ensemble des trompes à eau au débit du liquide traversant la capacité ;- possibility of controlling the flow of air or gas injected to the flow of the liquid passing through a capacity by varying the speed of rotation of all the water pumps to the flow of the liquid passing through the capacity;
FEUILLE RECTIFIEE (REGLE 91) ISA/EP - augmentation du mélange et du brassage du liquide par l'adjonction d'une hélice sur l'arbre d'entraînement au-dessus du groupe des trompes à eau ;RECTIFIED SHEET (RULE 91) ISA / EP - increased mixing and stirring of the liquid by the addition of a propeller on the drive shaft above the group of water pumps;
- augmentation du mélange et du brassage du liquide en intégrant les trompes à eau dans les pales d'une hélice.- increased mixing and stirring of the liquid by integrating the water tubes in the blades of a propeller.
Pour introduire de l'air ou un gaz dans un liquide, il suffit de fixer l'appareil complet, équipé d'un moteur électrique au-dessus du liquide, l'extrémité de l'arbre d'entraînement équipé des trompes à eau plongeant dans le liquide, de raccorder le moteur électrique à une source d'énergie électrique et de mettre le contact.To introduce air or gas into a liquid, simply fix the complete device, equipped with an electric motor above the liquid, the end of the drive shaft equipped with plunging water tubes in liquid, connect the electric motor to a source of electric energy and switch on the ignition.
Ce système présente les avantages suivants :This system has the following advantages:
- L'arbre et son équipement de trompes à eau associé à un moteur électrique, forment un ensemble actif, sans aucune pièce mécanique en mouvement, autre que la rotation de l'ensemble arbre/trompes à eau dans le liquide ; il n'y a pas de pièce d'usure autre que le mécanisme d'entraînement de l'arbre, situé au-dessus du liquide, donc très accessible.- The shaft and its water pump equipment associated with an electric motor, form an active assembly, without any moving mechanical part, other than the rotation of the shaft / water pump assembly in the liquid; there is no wearing part other than the drive mechanism of the shaft, located above the liquid, therefore very accessible.
- Pour augmenter la quantité d'air ou de gaz à introduire dans le liquide, il est possible de mettre plusieurs trompes à eau sur le même bras, en série.- To increase the amount of air or gas to be introduced into the liquid, it is possible to put several water tubes on the same arm, in series.
- Il est possible d'introduire de l'air ou un gaz en profondeur dans le liquide, en montant sur le même arbre plusieurs étages ou ensembles de trompes à eau.- It is possible to introduce air or a gas deep into the liquid, by mounting several stages or sets of water pumps on the same shaft.
- Avec l'utilisation de la partie étanche 16 placée sous le mécanisme d'entraînement et plongeant dans le liquide en formant joint hydraulique, il est possible d'injecter dans le liquide toute sorte de gaz, même très oxydants ou corrosifs, les matériaux en contact avec ces gaz étant résistants à ces gaz ou protégés pour permettre leur utilisation.- With the use of the watertight part 16 placed under the drive mechanism and immersed in the liquid by forming a hydraulic seal, it is possible to inject into the liquid any kind of gas, even very oxidizing or corrosive, the materials in contact with these gases being resistant to these gases or protected to allow their use.
FEUILLE RECTIFIEE (REGLE 91) ISA/EP RECTIFIED SHEET (RULE 91) ISA / EP

Claims

REVENDICATION CLAIM
1) Appareil pour diffuser de l'air ou un autre gaz dans un liquide, à une certaine profondeur, il se caractérise par un arbre creux (6) obstrué à sa partie inférieur, des orifices (8) à sa partie latérale supérieure situé au dessus du liquide, dont l'extrémité supérieur est racccordée mécaniquement à l'organe d 'entrainement de rotation (9-10), cet arbre est équipé à sa base de plusieurs trompes à eau (1-2-3-4) disposé périphériquement, à une certaine distance de l'axe de l'arbre et fixé à cet arbre par des sopports, la cavité des trompes à eau (3) ou se crée le vide l'orsque l'ensemble est en rotation, est relié à l'intérieur de l'arbre creux par des conduits (5) solidaire des supports des trompes à eau1) Apparatus for diffusing air or another gas into a liquid, at a certain depth, it is characterized by a hollow shaft (6) obstructed at its lower part, orifices (8) at its upper lateral part located at the above the liquid, the upper end of which is mechanically connected to the rotary drive (9-10), this shaft is equipped at its base with several water pumps (1-2-3-4) arranged peripherally , at a certain distance from the axis of the tree and fixed to this tree by sopports, the cavity of the water tubes (3) where the vacuum is created when the assembly is in rotation, is connected to the inside the hollow shaft by conduits (5) secured to the supports of the water tubes
2) Appareil selon la revendication 1 caractérise en ce que, pour l'arrivée de l'air ou du gaz, j'usqu'aux trompes à eau, la liaison avec l'extérieur est réalisé à l'aide d'un tube (19) dans lequel passe l'arbre d 'entrainement. L'espace entre l'arbre et le tube permet le passage de l'air ou du gaz j 'usqu'aux conduits solidaire des supports des trompes à eau.2) Apparatus according to claim 1 characterized in that, for the arrival of air or gas, J'usqu'aux water tubes, the connection with the outside is achieved using a tube ( 19) through which the drive shaft passes. The space between the shaft and the tube allows the passage of air or gas to the conduits secured to the supports of the water tubes.
3) Appareil selon la revendication 1 caractérise en ce que, une hélice (18) (figure 3), peut être fixé sur l'arbre au dessus de l'ensemble des trompes à eau, ce qui permettra de diriger vers le fond, le mélange liquide/air sortant des tubulures (4) des trompes à eau, et d'obtenir un mélange et une homogénéisation énergique de l'air dans le liquide.3) Apparatus according to claim 1 characterized in that, a propeller (18) (Figure 3), can be fixed on the shaft above the set of water pumps, which will direct towards the bottom, the liquid / air mixture leaving the tubing (4) of the water tubes, and to obtain a vigorous mixing and homogenization of the air in the liquid.
4) Appareil selon la revendication 1 caractérise en ce que, plusieurs groupes de trompes à eau peuvent être montés sur le même arbre( figure 4) associé ou non à des hélices, ce qui permet d'introduire plus profondément de l'air ou un autre gaz dans un liquide.4) Apparatus according to claim 1 characterized in that, several groups of water horns can be mounted on the same shaft (Figure 4) associated or not with propellers, which allows to introduce more deeply air or a other gas in a liquid.
5) Appareil selon la revendication 1 caractérise en ce que, pour utilser un autre gaz que l'air, en créant au droit des orifices (8) d'entrée d'air dans l'arbre d 'entrainement , une enceinte (16) les isolant de l'air comme indiqué sur la( figure 3). Un cylindre est fixé sous le moteur d 'entrainement ou sous le motoreducteur (10) de façon parfaitement étanche (17), la partie basse du cylindre plonge dans le liquide et forme joint hydrolique, sur le coté du cylindre, une tubulure (15) permet d'alimenter en air ou tout autre gaz, celui que l'on désire diffuser dans le liquide, pour faire subir à ce liquide un traitement particulier.5) Apparatus according to claim 1 characterized in that, to utilser a gas other than air, creating the right of the orifices (8) of air inlet in the drive shaft, an enclosure (16) isolating them from the air as shown in (figure 3). A cylinder is fixed under the drive motor or under the geared motor (10) in a perfectly sealed manner (17), the lower part of the cylinder plunges into the liquid and forms a hydraulic seal, on the side of the cylinder, a tube (15). makes it possible to supply air or any other gas, that which it is desired to diffuse into the liquid, to subject this liquid to a particular treatment.
6) Appareil selon la revendication 1, caractérise en ce que, plusieurs trompes à eau peuvent être montées en série ou en paralèle sur le même bras de raccordement à l'arbre, pour augmenter la quantité d'air ou de gaz introduit dans le liquide, les capacitées (3) de vide des trompes à eau étant reliées entre elles, puis par un conduit à l'intérieur de l'arbre d 'entrainement de 1 'ensemble.6) Apparatus according to claim 1, characterized in that, several water pumps can be mounted in series or in parallel on the same arm connecting to the shaft, to increase the amount of air or gas introduced into the liquid , the vacuum capacities of the water pumps being connected to each other, then by a conduit inside the drive shaft of the assembly.
7) Appareil selon la revendication 1 ,caractérise en ce que, les trompes à eau peuvent être intégré dans les pales d'une hélice.7) Apparatus according to claim 1, characterized in that, the water tubes can be integrated into the blades of a propeller.
8) Appareil selon la revendication 1 caractérise en ce que, le débit d'air ou de gaz injecté, est asservi au débit du liquide traversant la capacité, par variation de la vitesse de rotation de l'ensemble des trompes à eau.8) Apparatus according to claim 1 characterized in that, the flow of air or gas injected, is controlled by the flow of liquid passing through the capacity, by varying the speed of rotation of all the water tubes.
9) Appareil selon la revendication 1 caractérise en ce que, avec la partie étanche (16) placé sous le mécanisme d ' entrainement, plongeant dans le liquide et formant joint hydraulique, possibilité de connaître avec précision la quantité d'air ou de gaz introduit et diffuser dans le liquide, par la mise en place, en amont, sur la tubulure (15) , des appareils de contrôle. 9) Apparatus according to claim 1 characterized in that, with the sealed part (16) placed under the drive mechanism, immersed in the liquid and forming a hydraulic seal, possibility of knowing precisely the amount of air or gas introduced and diffuse in the liquid, by the installation, upstream, on the tube (15), of control devices.
EP94907608A 1993-03-05 1994-02-23 Apparatus for feeding and diffusing air or another gas into a liquid Expired - Lifetime EP0687197B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9302602A FR2702159B1 (en) 1993-03-05 1993-03-05 Apparatus for introducing and diffusing air or a gas into a liquid.
FR9302602 1993-03-05
PCT/FR1994/000198 WO1994020200A1 (en) 1993-03-05 1994-02-23 Apparatus for feeding and diffusing air or another gas into a liquid

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EP0687197A1 true EP0687197A1 (en) 1995-12-20
EP0687197B1 EP0687197B1 (en) 1997-07-16

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EP (1) EP0687197B1 (en)
JP (1) JPH08507250A (en)
AU (1) AU685425B2 (en)
CA (1) CA2157027A1 (en)
DE (1) DE69404285T2 (en)
DK (1) DK0687197T3 (en)
ES (1) ES2105650T3 (en)
FR (1) FR2702159B1 (en)
WO (1) WO1994020200A1 (en)

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CA2157027A1 (en) 1994-09-15
WO1994020200A1 (en) 1994-09-15
ES2105650T3 (en) 1997-10-16
DK0687197T3 (en) 1998-02-23
FR2702159B1 (en) 1995-04-28
AU6111494A (en) 1994-09-26
US5795504A (en) 1998-08-18
DE69404285D1 (en) 1997-08-21
DE69404285T2 (en) 1998-01-02
EP0687197B1 (en) 1997-07-16
JPH08507250A (en) 1996-08-06
FR2702159A1 (en) 1994-09-09
AU685425B2 (en) 1998-01-22

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