CH622712A5 - Process for performing the mixing of two fluids under pressure and apparatus for its use - Google Patents
Process for performing the mixing of two fluids under pressure and apparatus for its use Download PDFInfo
- Publication number
- CH622712A5 CH622712A5 CH207078A CH207078A CH622712A5 CH 622712 A5 CH622712 A5 CH 622712A5 CH 207078 A CH207078 A CH 207078A CH 207078 A CH207078 A CH 207078A CH 622712 A5 CH622712 A5 CH 622712A5
- Authority
- CH
- Switzerland
- Prior art keywords
- fluid
- pressure
- container
- under
- mixing
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D11/00—Control of flow ratio
- G05D11/006—Control of flow ratio involving a first fluid acting on the feeding of a second fluid
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
- A01M7/0089—Regulating or controlling systems
- A01M7/0092—Adding active material
-
- 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
- B01F23/48—Mixing liquids with liquids; Emulsifying characterised by the nature of the liquids
- B01F23/483—Mixing liquids with liquids; Emulsifying characterised by the nature of the liquids using water for diluting a liquid ingredient, obtaining a predetermined concentration or making an aqueous solution of a concentrate
-
- 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
- B01F23/49—Mixing systems, i.e. flow charts or diagrams
-
- 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
- B01F25/315—Injector mixers in conduits or tubes through which the main component flows wherein a difference of pressure at different points of the conduit causes introduction of the additional component into the main component
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
- B01F35/7176—Feed mechanisms characterised by the means for feeding the components to the mixer using pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
- B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
- B01F35/882—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise using measuring chambers, e.g. volumetric pumps, for feeding the substances
- B01F35/8823—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise using measuring chambers, e.g. volumetric pumps, for feeding the substances using diaphragms or bellows
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
- B05B12/1418—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet for supplying several liquids or other fluent materials in selected proportions to a single spray outlet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
- B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
- B05B7/28—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid
- B05B7/32—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid the fed liquid or other fluent material being under pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/04—Mixing biocidal, pesticidal or herbicidal ingredients used in agriculture or horticulture, e.g. for spraying
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Insects & Arthropods (AREA)
- Pest Control & Pesticides (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Catching Or Destruction (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Description
La présente invention concerne un procédé pour effectuer le mélange de deux fluides sous pression et un appareil pour sa mise en œuvre. The present invention relates to a method for effecting the mixing of two fluids under pressure and an apparatus for its implementation.
Actuellement, l'emploi d'herbicides nécessite obligatoirement l'utilisation d'un récipient, dans lequel se fait le mélange eau/ herbicide. Ce mélange est ensuite appliqué, par un moyen quelconque manuel ou mécanique, sur les surfaces à traiter. Cette façon de procéder implique une manutention extrêmement longue comprenant une phase de mélange, une phase de brassage et une phase de transvasage dans une citerne pour le transport du produit, et bien entendu une phase de transport au cours de laquelle le produit préparé est transporté sur le lieu d'utilisation, qui peut être un terrain plus ou moins accidenté. Après l'usage, la citerne et tous les récipients ayant été en contact avec le mélange eau/ herbicide doivent être soigneusement nettoyés à l'aide de produits neutralisants, souvent coûteux et polluants. Currently, the use of herbicides necessarily requires the use of a container, in which the water / herbicide mixture is made. This mixture is then applied, by any manual or mechanical means, to the surfaces to be treated. This way of proceeding involves extremely long handling comprising a mixing phase, a stirring phase and a transfer phase into a tank for transporting the product, and of course a transport phase during which the prepared product is transported on the place of use, which can be more or less uneven ground. After use, the tank and all containers that have been in contact with the water / herbicide mixture must be thoroughly cleaned using neutralizing agents, which are often expensive and polluting.
L'utilisation de moteurs et de pompes occasionne des entretiens, des réparations, un apport énergétique et le transport des accessoires, donc une importante mise de fonds et des frais d'exploitation élevés. The use of motors and pumps results in maintenance, repairs, energy consumption and the transportation of accessories, thus a significant down payment and high operating costs.
Si l'emploi du mélange eau/herbicide est effectué par des moyens plus élémentaires, par exemple le transport à dos d'homme dans des réservoirs à pression ou des arrosoirs, de nombreux va-et-vient sont nécessaires, d'où une appréciable perte de temps et une mauvaise rentabilité de l'opération. If the use of the water / herbicide mixture is carried out by more elementary means, for example transport on the back of a man in pressure tanks or watering cans, many back and forth movements are necessary, hence an appreciable loss of time and poor profitability of the operation.
La présente invention se propose de pallier ces inconvénients en réalisant un procédé permettant de travailler en continu. The present invention proposes to overcome these drawbacks by providing a method for working continuously.
Dans ce but, le procédé selon l'invention, pour effectuer le mélange consistant à mélanger en continu des quantités déterminées d'un fluide B contenu dans un récipient dans un fluide A circulant sous pression dans une conduite, est caractérisé en ce que l'on applique, sur le fluide B, une pression supérieure à celle du fluide A, et en ce que l'on prélève, par une aspiration due aux différences de pression entre le fluide A et le fluide B, le fluide B pour l'injecter en continu dans le fluide A par l'intermédiaire d'un dispositif mélangeur. For this purpose, the method according to the invention, for carrying out the mixing consisting in continuously mixing determined quantities of a fluid B contained in a container in a fluid A circulating under pressure in a pipe, is characterized in that the one applies, on the fluid B, a pressure higher than that of the fluid A, and in that one takes, by a suction due to the differences in pressure between the fluid A and the fluid B, the fluid B to inject it continuously in fluid A via a mixing device.
L'appareil pour la mise en œuvre du procédé selon l'invention est caractérisé en ce qu'il comporte un premier récipient rigide contenant un second récipient souple, le premier récipient étant connecté à une alimentation en fluide A sous une première pression sensiblement constante, le second récipient étant agencé pour contenir une quantité déterminée de fluide B sous la première pression, un dispositif pour abaisser la pression du fluide A et l'amener à une seconde pression constante inférieure à la première pression, une conduite dans laquelle circule le fluide A sous la seconde pression, et un dispositif à débit réglable pour faire communiquer ledit second récipient et la conduite de circulation du fluide A sous pression réduite. The apparatus for implementing the method according to the invention is characterized in that it comprises a first rigid container containing a second flexible container, the first container being connected to a supply of fluid A under a first substantially constant pressure, the second container being arranged to contain a determined quantity of fluid B under the first pressure, a device for lowering the pressure of the fluid A and bringing it to a second constant pressure lower than the first pressure, a pipe in which the fluid A circulates under the second pressure, and an adjustable flow device for communicating said second container and the fluid circulation pipe A under reduced pressure.
Cet appareil peut être constitué uniquement de pièces d'appareillage simples et couramment utilisées dans de nombreux domaines d'application. Grâce à un volume et un poids réduits, cet appareil permet d'appliquer un herbicide parfaitement mélangé sur de grandes surfaces en un laps de temps réduit, dans des proportions constantes. L'autonomie moyenne de l'appareil est de l'ordre de cinq à six heures, après quoi il nécessite un remplissage qui se fait en moyenne en cinq minutes, ce qui permet de supprimer les temps morts. Du fait que seul le produit à mélanger à l'eau est transporté sur le lieu d'utilisation, le gain du transport de matière se chiffre approximativement à 90,5%. This device can consist only of simple switchgear parts commonly used in many fields of application. Thanks to its reduced volume and weight, this device makes it possible to apply a perfectly mixed herbicide on large areas in a reduced period of time, in constant proportions. The average autonomy of the device is of the order of five to six hours, after which it requires filling which is done on average in five minutes, which makes it possible to eliminate idle time. Since only the product to be mixed with water is transported to the place of use, the gain in material transport is approximately 90.5%.
Le recours au procédé de l'invention permet de réduire considérablement le problème de transport de matière, de stockage des récipients et citernes de préparation et de transport du mélange, ainsi que les problèmes de nettoyage de ces récipients. En outre, le risque de la perte de matière première est quasiment nul puisque, lorsque le traitement est terminé, l'herbicide concentré peut être soit récupéré, soit laissé dans l'appareil en vue d'une utilisation ultérieure. L'utilisation de cet appareil est en outre très économique, du fait que l'élimination du risque de pertes en matière première et du fait que, grâce à son faible poids, sa manipulation peut être effectuée aisément par une seule personne. The use of the method of the invention makes it possible to considerably reduce the problem of transport of material, storage of containers and tanks for preparation and transport of the mixture, as well as the problems of cleaning these containers. In addition, the risk of loss of raw material is almost zero since, when the treatment is finished, the concentrated herbicide can either be recovered or left in the device for later use. The use of this device is also very economical, because the elimination of the risk of loss of raw material and the fact that, thanks to its low weight, its handling can be carried out easily by a single person.
En outre, l'emploi de conduites de distribution souples, par exemple des tuyaux en caoutchouc ou en matière synthétique équipés d'une lance de pulvérisation, permet le traitement de très grandes surfaces sans déplacer l'appareil lui-même. In addition, the use of flexible distribution pipes, for example rubber or synthetic pipes fitted with a spray lance, makes it possible to treat very large areas without moving the device itself.
La présente invention sera mieux comprise en référence à la description d'un exemple de réalisation et du dessin annexé, dans lequel: The present invention will be better understood with reference to the description of an exemplary embodiment and the attached drawing, in which:
La fig. 1 représente une vue schématique de l'appareil selon l'invention, et la fig. 2 illustre une partie de cet appareil contenant le fluide B. Fig. 1 shows a schematic view of the apparatus according to the invention, and FIG. 2 illustrates a part of this device containing the fluid B.
En se référant à la fig. 1, l'appareil représenté est alimenté par un fluide A sous une pression pouvant être variable selon la nature de la source du fluide A. Cette source peut être le réseau d'alimentation en eau, ou une pompe (non représentée). Cette alimentation est commandée par une vanne d'arrêt 1. Le fluide A est tout d'abord amené à un réducteur de pression 2, équipé d'un filtre (non représenté) et d'un compensateur de pression (non représenté) destinés à fournir un fluide A sous une pression constante, quelle que soit la pression de la source d'alimentation en fluide A. Le filtre est indispensable pour supprimer les impuretés éventuelles pouvant être contenues à l'origine dans le fluide A. A la sortie du réducteur de pression 2, le fluide est conduit selon deux voies différentes. Une première conduite amène ce fluide à l'entrée d'un réducteur de pression 3, dont la sortie est reliée à un clapet de retenue 4 ou clapet antiretour connu en soi. L'autre conduite, équipée à son point le plus bas d'un orifice de vidange ou purge 12, est raccordée à l'entrée d'un récipient rigide 8. La pression à laquelle se trouve le fluide A dans le récipient rigide 8 correspond à la pression de sortie du réducteur de pression 2. A l'intérieur du récipient rigide 8 se trouve un second récipient aux parois souples, ou ballon 7, contenant un fluide B destiné à être mélangé au fluide A. Ce fluide B est par exemple un herbicide concentré, ou tout autre produit pouvant être mélangé à de l'eau, par exemple pour le traitement de produits agricoles. L'orifice du Referring to fig. 1, the device shown is supplied with a fluid A at a pressure which can be variable depending on the nature of the source of the fluid A. This source can be the water supply network, or a pump (not shown). This supply is controlled by a stop valve 1. The fluid A is firstly supplied to a pressure reducer 2, equipped with a filter (not shown) and a pressure compensator (not shown) intended for supply a fluid A at a constant pressure, whatever the pressure of the fluid supply source A. The filter is essential to remove any impurities which may be originally contained in fluid A. At the outlet of the reducer pressure 2, the fluid is conducted in two different ways. A first pipe brings this fluid to the inlet of a pressure reducer 3, the outlet of which is connected to a check valve 4 or check valve known per se. The other pipe, equipped at its lowest point with a drain or purge orifice 12, is connected to the inlet of a rigid container 8. The pressure at which the fluid A is located in the rigid container 8 corresponds at the outlet pressure of the pressure reducer 2. Inside the rigid container 8 is a second container with flexible walls, or balloon 7, containing a fluid B intended to be mixed with the fluid A. This fluid B is for example a concentrated herbicide, or any other product that can be mixed with water, for example for the treatment of agricultural products. The orifice of
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ballon 7 communique d'une part avec un dispositif mélangeur 9 qui peut être une vanne réglable, et avec une vanne d'arrêt 10 montée à l'extrémité inférieure d'un entonnoir de remplissage 11 destiné à approvisionner par intervalles le ballon 7 en fluide B. La sortie du dispositif mélangeur 9 communique avec l'autre 5 tank 7 communicates on the one hand with a mixing device 9 which can be an adjustable valve, and with a stop valve 10 mounted at the lower end of a filling funnel 11 intended to supply the tank 7 with fluid at intervals B. The output of the mixing device 9 communicates with the other 5
conduite du fluide A sortant du clapet de retenue 4. fluid line A leaving the check valve 4.
Le fluide B, contenu dans le ballon 7, est soumis à la première pression du fluide A correspondant à la pression de sortie du réducteur de pression 2, qui est identique à la pression à l'entrée du réducteur de pression 3. La sortie du ballon 7 communique io avec le fluide A qui circule à la sortie du réducteur de pression 3 sous une seconde pression inférieure à ladite première pression. The fluid B, contained in the balloon 7, is subjected to the first pressure of the fluid A corresponding to the outlet pressure of the pressure reducer 2, which is identical to the pressure at the inlet of the pressure reducer 3. The outlet of the balloon 7 communicates with the fluid A which circulates at the outlet of the pressure reducer 3 under a second pressure lower than said first pressure.
De ce fait, le fluide B, qui est en surpression, est aspiré à travers le dispositif mélangeur 9 et se mélange de façon continue et réglée par le dispositif mélangeur 9 au fluide A. Ce mélange est transmis is à un dernier réducteur de pression 5 qui fournira un mélange parfaitement homogène de fluide A et de fluide B sous une pression déterminée, choisie pour la pulvérisation. Un dernier clapet de retenue 6 interdit tout retour du mélange dans la partie de l'appareil disposée en amont. La sortie du clapet de retenue 6 est 20 As a result, the fluid B, which is under overpressure, is sucked through the mixing device 9 and mixes continuously and regulated by the mixing device 9 with the fluid A. This mixture is transmitted is to a last pressure reducer 5 which will provide a perfectly homogeneous mixture of fluid A and fluid B under a determined pressure, chosen for spraying. A final check valve 6 prevents any return of the mixture in the part of the device arranged upstream. The outlet of the check valve 6 is 20
reliée à une lance de pression 13 utilisée pour la pulvérisation des surfaces à traiter. connected to a pressure lance 13 used for spraying the surfaces to be treated.
La fig. 2 montre d'une manière agrandie les réservoirs rigide et souple contenant les fluides A et B et les communications à l'entrée et la sortie du dispositif mélangeur. Le récipient rigide 8 est constitué par une cloche aux parois rigides, le récipient 7 étant fixé à l'intérieur de cette cloche et présentant des parois souples, constituées par exemple par un ballon en caoutchouc. Le récipient 8 communique à sa partie inférieure avec l'arrivée du fluide A sous ladite première pression, cette pression se communiquant à l'intérieur du récipient rigide 8 et sur les parois flexibles du ballon 7, et par conséquent sur le fluide contenu à l'intérieur du ballon 7. Cette pression a tendance à rejeter le fluide B à travers son orifice supérieur par le dispositif mélangeur, qui peut être constitué par une vanne à pointeau destinée au réglage précis du débit. La sortie du dispositif mélangeur communique avec un tuyau dans lequel circule le fluide A sous une pression réduite, ce qui a pour conséquence d'engendrer une dépression qui aspire une quantité déterminée de fluide B selon le réglage du dispositif mélangeur. Fig. 2 shows in an enlarged manner the rigid and flexible reservoirs containing the fluids A and B and the communications at the inlet and the outlet of the mixing device. The rigid container 8 is constituted by a bell with rigid walls, the container 7 being fixed inside this bell and having flexible walls, constituted for example by a rubber balloon. The container 8 communicates at its lower part with the arrival of the fluid A under said first pressure, this pressure communicating inside the rigid container 8 and on the flexible walls of the balloon 7, and consequently on the fluid contained in the 'inside the balloon 7. This pressure tends to reject the fluid B through its upper orifice by the mixing device, which can be constituted by a needle valve intended for precise adjustment of the flow rate. The outlet of the mixing device communicates with a pipe in which the fluid A circulates under reduced pressure, which has the consequence of generating a vacuum which sucks up a determined quantity of fluid B according to the setting of the mixing device.
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1 feuille dessins 1 sheet of drawings
Claims (3)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH207078A CH622712A5 (en) | 1978-02-27 | 1978-02-27 | Process for performing the mixing of two fluids under pressure and apparatus for its use |
| FR7906029A FR2424521A1 (en) | 1978-02-27 | 1979-02-27 | CONTINUOUS DOSAGE METHOD AND APPARATUS |
| DE19792907663 DE2907663A1 (en) | 1978-02-27 | 1979-02-27 | METHOD AND DEVICE FOR CONTINUOUS MIXING OF TWO FLUIDS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH207078A CH622712A5 (en) | 1978-02-27 | 1978-02-27 | Process for performing the mixing of two fluids under pressure and apparatus for its use |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH622712A5 true CH622712A5 (en) | 1981-04-30 |
Family
ID=4225190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH207078A CH622712A5 (en) | 1978-02-27 | 1978-02-27 | Process for performing the mixing of two fluids under pressure and apparatus for its use |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH622712A5 (en) |
| DE (1) | DE2907663A1 (en) |
| FR (1) | FR2424521A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4770198A (en) * | 1981-09-25 | 1988-09-13 | The Dow Chemical Company | Method and apparatus for mixing liquids |
| GB0014442D0 (en) * | 2000-06-12 | 2000-08-09 | Palmer Michael R N | Mixing liquids under pressure |
-
1978
- 1978-02-27 CH CH207078A patent/CH622712A5/en not_active IP Right Cessation
-
1979
- 1979-02-27 FR FR7906029A patent/FR2424521A1/en active Pending
- 1979-02-27 DE DE19792907663 patent/DE2907663A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| FR2424521A1 (en) | 1979-11-23 |
| DE2907663A1 (en) | 1979-09-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |