EP0037747A1 - Spray nozzle, especially for a fertilizer - Google Patents

Spray nozzle, especially for a fertilizer Download PDF

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Publication number
EP0037747A1
EP0037747A1 EP81400264A EP81400264A EP0037747A1 EP 0037747 A1 EP0037747 A1 EP 0037747A1 EP 81400264 A EP81400264 A EP 81400264A EP 81400264 A EP81400264 A EP 81400264A EP 0037747 A1 EP0037747 A1 EP 0037747A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
liquid
diameter
spray nozzle
chamber
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
EP81400264A
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German (de)
French (fr)
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EP0037747B1 (en
Inventor
Christian Naturel
Etienne Minot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Ceramiques Avancees Desmarquest SAS
Original Assignee
Lafarge Refractaires SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Lafarge Refractaires SA filed Critical Lafarge Refractaires SA
Priority to AT81400264T priority Critical patent/ATE13390T1/en
Publication of EP0037747A1 publication Critical patent/EP0037747A1/en
Application granted granted Critical
Publication of EP0037747B1 publication Critical patent/EP0037747B1/en
Expired legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means

Definitions

  • the present invention relates to a spray nozzle especially for fertilizers for spraying liquid fertilizers in the form of large drops.
  • a spreading device is generally used, fixed on a tractor and comprising, among other things, a more or less long deflection tube into which the liquid fertilizer is brought.
  • This tube is provided with several barrels or other similar devices, distributed regularly over the entire length of the deflection tube, on which are fixed several liquid fertilizer spraying devices.
  • these spraying devices consist of rods or booms, generally of metal, pierced with several holes and the size of which varies from one rod to another.
  • liquid fertilizers for a given liquid fertilizer inlet pressure.
  • rods have a certain number of drawbacks and in particular of being fragile, bulky, mobile and often costly, because the fact that these rods are made of metal, they are easily chemically attackable by fertilizers, that is to say that is, they wear out quickly, which necessitates a fairly frequent replacement of these rods.
  • the present invention therefore relates to a fertilizer spray nozzle which makes it possible to remedy these drawbacks and, in particular, having greater resistance to chemical attack by fertilizers, a much smaller size and a price. lower.
  • the body of the nozzle is made of rigid plastic and the pellet is made of alumina.
  • the body of the nozzle has on its outlet surface of the fluid, a conical shape so that the axes of the holes are perpendicular to said face.
  • the spray nozzle can be easily disassembled and easily cleaned, which is, for the farmer, a big advantage due to the presence of large and frequent deposits when spraying fertilizer liquids.
  • the spraying devices 7 consist of rods 7a, generally metallic, pierced with several holes such as 9a, for example, three in number, the size of which varies from rod to rod, for rods 9a fixed on the same barrel 5.
  • These rods 9a can be, for example, arranged at 90 ° from one another, for the same barrel 5.
  • the spraying devices 7 are constituted by spray nozzles 7b pierced with small holes 9b.
  • the barrels 5 on which the spraying devices 7 are mounted make it possible to select the desired spraying devices, therefore the size of the holes 9 thus making it possible to define the spraying rate of the liquid fertilizers that is desired.
  • the spraying devices according to the invention that is to say the nozzles 7b, are considerably less bulky than the spraying devices 7a of the art anterior, which allows for a deflection tube 3 of given length to fix a greater number of spraying devices.
  • the liquid jets referenced Fb exit with a certain axis of inclination relative to the axis. of the nozzle 7b, which makes it possible to spread liquid fertilizers over a larger surface and in a uniform manner, while in the prior art, the liquid jets referenced Fa arrive, perpendicular to the ground.
  • FIG. 2 shows a section along line II-II of Figure 1B.
  • This diagram makes it easier to see the arrangement of the nozzles 7b on the barrel 5, connected to the deflection tube 3 by means of a support 11.
  • the nozzle 7b is fixed on the barrel 5 for example, using a nut such as 13 screwed onto a threaded outlet such as 15 secured to the barrel 5. Between the threaded outlet 15 and the spray nozzle 7b, can be placed a seal such as 17.
  • This nozzle 7b comprises on each side a flat 19 allowing the orientation of liquid fertilizer jets.
  • This nozzle shown in more detail in Figures 3 and 4 is provided with holes such as 9b identical, arranged at equal distance from each other and allowing the exit of the liquid. When these holes are three in number, the angle between two neighboring holes 9b is 120 °. Of course, this is just a example, because the spray nozzles can comprise 2, 3, 4, 5 outlet holes 9b, distributed over a ring, which ensures identical flow for each of the holes 9b whatever the inlet pressure of the liquid fertilizers.
  • the axes of these holes 9b are inclined relative to the axis of the nozzle 7b at an angle preferably equal to 25 °.
  • the nozzle 7b consists of a body 21, provided with a cylindrical chamber 23, of given diameter, allowing the passage of liquid fertilizers in the nozzle.
  • This body 21 preferably made of rigid plastic material, has on its face 25 for outlet of the fluid, a conical shape so that the axes of the holes 9b are perpendicular to said face 25.
  • This nozzle 7b further comprises a calibrated pellet 27, preferably made of alumina having a purity of 99.5%, located at the inlet of the liquid in the nozzle 7a and defining a passage 29 to allow the liquid to flow whose diameter is less than the diameter of the chamber 23.
  • This pellet 27 has a concave face 31 making it possible to limit the flow rate of the liquid entering the nozzle 7a and to channel it. Indeed, the liquid arriving on this concave face 31, meets a restriction 33 at right angles to the passage 29 creating a significant pressure drop. This allows, as well as the existence of a passage 29 of diameter smaller than the diameter of the chamber 23, to reduce the flow of liquid leaving the nozzle.
  • this restriction 33 of passage 29 has a diameter whose order of magnitude is located between 0.7 mm and 1.8 mm and less than the diameter of the holes 9b, whose order of magnitude is located between 1.4 mm and 2.5 mm.
  • a restriction 33, and smaller holes 9b would lead to blockage of the nozzle, while a restriction 33 and larger holes 9b would lead to an excessive fertilizer spreading rate.
  • This pad 27 can be placed on top of the body of the nozzle 21 and its section is then equal to the section of the end 35 of the body of the nozzle 21. Under these conditions, the pad 27 is represented by the reference 27a.
  • the means for fixing the pad 27a consist of a coupling ring 37 preferably made of flexible plastic, trapping the pad 27a. and coming to bear on the end 35 of the body of the nozzle 21, constituting a step.
  • This coupling ring is, of course, provided with an opening 39 so as to allow the introduction of liquid fertilizers into the nozzle.
  • the calibrated pellet referenced 27b can be placed in the chamber 23 of the body of the nozzle 21.
  • This chamber 23 comprising on its walls a recess 41 creating a reduction in the diameter of the chamber 23, allows attachment to force of the patch 27b, the diameter of which is greater than the diameter of the chamber 23 defined after the recess 41.
  • this recess 41 exists, which allows the farmer to adapt the spray nozzle 7a on the barrel 5 (FIG. 2) according to the diameter of the threaded outlet 15.
  • This nozzle depending on the dimension of the restriction 33 of the passage 29 and of the holes 9a, can deliver the liquid fertilizers in the form of droplets of 0.5 to 2 mm in diameter for an inlet pressure of the liquid fertilizers ranging from 0.5 to 10 bars, because the spray rate of liquid fertilizers depends not only on the size of the restriction 33 and the holes 9a, but also on the pressure under which the liquids arrive in the nozzle.

Landscapes

  • Nozzles (AREA)
  • Fertilizing (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Catching Or Destruction (AREA)
  • Fertilizers (AREA)

Abstract

Spray nozzle permitting the spraying of liquid, having a body provided with a cylindrical chamber of given diameter for the passage of a liquid into a nozzle in which the nozzle liquid outlet has a plurality of equidistantly spaced, identical holes, whose axes are inclined relative to the nozzle axis. A member positioned at the intake of the liquid into the nozzle defines a passage for the liquid outflow, and has a diameter less than the diameter of the chamber. The member has a concave face at the inlet and a constriction of the passage limits the liquid flow entering the nozzle. Fixing means permit the member to be fixed to the nozzle body.

Description

La présente invention concerne une buse de pulvérisation notamment pour engrais permettant de pulvériser des engrais liquides sous forme de grosses gouttes.The present invention relates to a spray nozzle especially for fertilizers for spraying liquid fertilizers in the form of large drops.

Pour épandre de l'engrais liquide, on utilise un dispositif d'épandage généralement fixé sur un tracteur et comprenant entre autres, un tube de déviation plus ou moins long dans lequel est amené l'engrais liquide. Ce tube est muni de plusieurs barillets ou autres dispositifs similaires, distribués de façon régulière sur toute la longueur du tube de déviation, sur lesquels sont fixés plusieurs dispositifs de pulvérisation d'engrais liquides.To spread liquid fertilizer, a spreading device is generally used, fixed on a tractor and comprising, among other things, a more or less long deflection tube into which the liquid fertilizer is brought. This tube is provided with several barrels or other similar devices, distributed regularly over the entire length of the deflection tube, on which are fixed several liquid fertilizer spraying devices.

Actuellement, ces dispositifs de pulvérisation sont constitués par des tiges ou des rampes, en général métalliques, percées de plusieurs trous et dont la dimension varie d'une tige à l'autre. Les barillets ou autres dispositifs similaires sur lesquels sont montées ces tiges, par exemple, quatre tiges disposées à 90° l'une de l'autre, permettent de sélectionner la tige désirée, donc la dimension des trous permettant ainsi de définir le débit de pulvérisation des engrais liquides, pour une pression d'arrivée des engrais liquides, donnée.Currently, these spraying devices consist of rods or booms, generally of metal, pierced with several holes and the size of which varies from one rod to another. The barrels or other similar devices on which these rods are mounted, for example, four rods arranged at 90 ° from one another, allow the desired rod to be selected, therefore the size of the holes thus making it possible to define the spraying rate. liquid fertilizers, for a given liquid fertilizer inlet pressure.

Ces tiges présentent un certain nombre d'inconvénients et en particulier d'être fragiles, encombrantes, mobiles et souvent coûteuses, car du fait que ces tiges sont constituées en métal, celles-ci sont facilement attaquables chimiquement par les engrais, c'est-à-dire qu'elles s'usent rapidement, ce qui nécessite un remplacement assez fréquent de ces tiges.These rods have a certain number of drawbacks and in particular of being fragile, bulky, mobile and often costly, because the fact that these rods are made of metal, they are easily chemically attackable by fertilizers, that is to say that is, they wear out quickly, which necessitates a fairly frequent replacement of these rods.

La présente invention a donc pour objet une buse de pulvérisation pour engrais permettant de remédier à ces inconvénients et, notamment, présentant une plus grande résistance vis-à-vis de l'attaque chimique par les engrais, un encombrement beaucoup plus faible et un prix moins élevé.The present invention therefore relates to a fertilizer spray nozzle which makes it possible to remedy these drawbacks and, in particular, having greater resistance to chemical attack by fertilizers, a much smaller size and a price. lower.

Cette buse de pulvérisation se caractérise en ce qu'elle comprend :

  • - un corps muni d'une chambre cylindrique, de diamètre donné, permettant le passage du liquide dans la buse et comportant au niveau de la sortie du liquide de la buse plusieurs trous identiques, disposés à égale distance l'un de l'autre et dont les axes sont inclinés par rapport à l'axe de la buse ;
  • - une pastille située à l'entrée du liquide dans la buse définissant un passage pour l'écoulement du liquide dont le diamètre est inférieur au diamètre de ladite chambre, ladite pastille comportant à l'entrée une face concave et une restriction dudit passage permettant de limiter le débit du liquide entrant dans la buse ;
  • - des moyens de fixation permettant de fixer ladite pastille au corps de la buse.
This spray nozzle is characterized in that it comprises:
  • a body provided with a cylindrical chamber, of given diameter, allowing the passage of the liquid in the nozzle and comprising at the level of the outlet of the liquid from the nozzle several identical holes, arranged at equal distance from each other and whose axes are inclined relative to the axis of the nozzle;
  • a pellet situated at the entry of the liquid into the nozzle defining a passage for the flow of the liquid whose diameter is less than the diameter of said chamber, said pellet comprising at the entry a concave face and a restriction of said passage making it possible to limit the flow of liquid entering the nozzle;
  • - Fixing means for fixing said patch to the body of the nozzle.

Selon un mode de réalisation préféré de l'invention, le corps de la buse est réalisé en matière plastique rigide et la pastille est réalisée en alumine.According to a preferred embodiment of the invention, the body of the nozzle is made of rigid plastic and the pellet is made of alumina.

De plus, selon l'invention, le corps de la buse présente sur sa surface de sortie du fluide, une forme conique de sorte que les axes des trous soient perpendiculaires à ladite face.In addition, according to the invention, the body of the nozzle has on its outlet surface of the fluid, a conical shape so that the axes of the holes are perpendicular to said face.

En plus des avantages cités ci-dessus, la buse de pulvérisation peut être facilement démontée et facilement nettoyée, ce qui est, pour l'agriculteur, un gros avantage du fait de la présence de dépôts importants et fréquents lors de la pulvérisation d'engrais liquides.In addition to the advantages mentioned above, the spray nozzle can be easily disassembled and easily cleaned, which is, for the farmer, a big advantage due to the presence of large and frequent deposits when spraying fertilizer liquids.

D'autres caractéristiques et avantages de l'invention ressortiront mieux de la description qui va suivre, donnée à titre purement illustratif et non limitatif, en référence aux figures annexées dans lesquelles :

  • - la figure 1 représente schématiquement une vue d'ensemble d'un dispositif d'épandage d'engrais liquides : la figure 1A représentant un dispositif selon l'art antérieur, la figure 1B représentant un dispositif selon l'invention ;
  • - la figure 2 représente une coupe selon la ligne II-II de la figure 1B ;
  • - la figure 3 représente une vue de dessous de la buse de pulvérisation selon l'invention ;
  • - la figure 4 représente une coupe selon la ligne III-III de la figure 3 ;
  • - la figure 1 représente schématiquement une vue d'ensemble d'un dispositif d'épandage d'engrais liquides. Ce dispositif comprend une conduite d'arrivée 1 des engrais liquides, relié à un tube de déviation 3 pouvant être plus ou moins long et muni, par exemple, de plusieurs barillets tels que 5, distribués de façon régulière sur toute la longueur du tube 3 sur lesquels sont fixés plusieurs dispositifs de pulvérisation tels que 7.
Other characteristics and advantages of the invention will emerge more clearly from the description which follows, given purely by way of non-limiting illustration, with reference to the appended figures in which:
  • - Figure 1 schematically shows an overview of a device for spreading liquid fertilizers: Figure 1A showing a device according to the prior art, Figure 1B showing a device according to the invention;
  • - Figure 2 shows a section along line II-II of Figure 1B;
  • - Figure 3 shows a bottom view of the spray nozzle according to the invention;
  • - Figure 4 shows a section along line III-III of Figure 3;
  • - Figure 1 schematically shows an overview of a liquid fertilizer spreading device. This device comprises an inlet pipe 1 for liquid fertilizers, connected to a deflection tube 3 which may be more or less long and provided, for example, with several barrels such as 5, distributed regularly over the entire length of the tube 3 to which several spraying devices such as 7 are attached.

Dans l'art antérieur, représenté sur la figure . lA, les dispositifs de pulvérisation 7 sont constitués par des tiges 7a, en général métalliques, percées de plusieurs trous tels que 9a, par exemple, au nombre de trois, dont la dimension varie d'une tige à l'autre, pour des tiges 9a fixées sur un même barillet 5.In the prior art, shown in the figure. 1A, the spraying devices 7 consist of rods 7a, generally metallic, pierced with several holes such as 9a, for example, three in number, the size of which varies from rod to rod, for rods 9a fixed on the same barrel 5.

Ces tiges 9a peuvent être, par exemple, disposées à 90° l'une de l'autre, pour un même barillet 5.These rods 9a can be, for example, arranged at 90 ° from one another, for the same barrel 5.

Sur la figure 1B représentant le dispositif selon l'invention, les dispositifs de pulvérisation 7 sont constitués par des buses de pulvérisation 7b percées de petits trous 9b.In FIG. 1B representing the device according to the invention, the spraying devices 7 are constituted by spray nozzles 7b pierced with small holes 9b.

Dans les deux cas, les barillets 5 sur lesquels sont montés les dispositifs de pulvérisation 7, permettent de sélectionner les dispositifs de pulvérisation désirés, donc la dimension des trous 9 permettant ainsi de définir le débit de pulvérisation des engrais liquides que l'on souhaite. En se référant aux deux parties A et B de la figure, on constate que les dispositifs de pulvérisation selon l'invention, c'est-à-dire les buses 7b, sont nettement moins encombrants que les dispositifs de pulvérisation 7a de l'art antérieur, ce qui permet pour un tube de déviation 3 de longueur donnée de fixer un plus grand nombre de dispositifs de pulvérisation. Cet encombrement plus faible, lié au poids des buses 7b qui sont plus légères que les tiges métalliques 7a) permet de diminuer considérablement l'effet de ballant dû aux tiges 7a, ce qui contribue à la rigidité et à la solidité du dispositif d'épandage, selon l'invention.In both cases, the barrels 5 on which the spraying devices 7 are mounted, make it possible to select the desired spraying devices, therefore the size of the holes 9 thus making it possible to define the spraying rate of the liquid fertilizers that is desired. Referring to the two parts A and B of the figure, it can be seen that the spraying devices according to the invention, that is to say the nozzles 7b, are considerably less bulky than the spraying devices 7a of the art anterior, which allows for a deflection tube 3 of given length to fix a greater number of spraying devices. This smaller footprint, linked to the weight of the nozzles 7b which are lighter than the metal rods 7a) makes it possible to considerably reduce the swaying effect due to the rods 7a, which contributes to the rigidity and the solidity of the spreading device. , according to the invention.

De plus, du fait même de la forme des buses de pulvérisation 7b qui sera décrite de façon plus détaillée ultérieurement et de la position des trous 9b, les jets de liquide référencés Fb sortent avec un certain axe d'inclinaison par rapport à l'axe de la buse 7b, ce qui permet d'épandre des engrais liquides sur une plus grande surface et ce de façon uniforme, tandis que dans l'art antérieur, les jets de liquide référencés Fa arrivent, perpendiculairement au sol.In addition, because of the shape of the spray nozzles 7b which will be described in more detail later and the position of the holes 9b, the liquid jets referenced Fb exit with a certain axis of inclination relative to the axis. of the nozzle 7b, which makes it possible to spread liquid fertilizers over a larger surface and in a uniform manner, while in the prior art, the liquid jets referenced Fa arrive, perpendicular to the ground.

- la figure 2 représente une coupe selon la ligne II-II de la figure 1B. Ce schéma permet de mieux voir la disposition des buses 7b sur le barillet 5, relié au tube de déviation 3 au moyen d'un support 11. La buse 7b est fixée sur le barillet 5 par exemple, à l'aide d'un écrou tel que 13 vissé sur une sortie filetée telle que 15 solidaire du barillet 5. Entre la sortie filetée 15 et la buse de pulvérisation 7b, peut être placé un joint d'étanchéité tel que 17. Cette buse 7b comprend de chaque côté un méplat 19 permettant l'orientation des jets d'engrais liquides.- Figure 2 shows a section along line II-II of Figure 1B. This diagram makes it easier to see the arrangement of the nozzles 7b on the barrel 5, connected to the deflection tube 3 by means of a support 11. The nozzle 7b is fixed on the barrel 5 for example, using a nut such as 13 screwed onto a threaded outlet such as 15 secured to the barrel 5. Between the threaded outlet 15 and the spray nozzle 7b, can be placed a seal such as 17. This nozzle 7b comprises on each side a flat 19 allowing the orientation of liquid fertilizer jets.

Cette buse représentée de façon plus détaillée sur les figures 3 et 4, est munie de trous tels que 9b identiques, disposés à égale distance l'un de l'autre et permettant la sortie du liquide. Lorsque ces trous sont au nombre de trois, l'angle entre deux trous voisins 9b est de 120°. Bien entendu, ceci n'est qu'un exemple, car les buses de pulvérisation peuvent comporter 2, 3, 4, 5 trous 9b de sortie, répartis sur une couronne, ce qui assure un écoulement indentique pour chacun des trous 9b quelle que soit la pression d'arrivée des engrais liquides.This nozzle shown in more detail in Figures 3 and 4, is provided with holes such as 9b identical, arranged at equal distance from each other and allowing the exit of the liquid. When these holes are three in number, the angle between two neighboring holes 9b is 120 °. Of course, this is just a example, because the spray nozzles can comprise 2, 3, 4, 5 outlet holes 9b, distributed over a ring, which ensures identical flow for each of the holes 9b whatever the inlet pressure of the liquid fertilizers.

De plus, les axes de ces trous 9b sont inclinés par rapport à l'axe de la buse 7b d'un angle de préférence égal à 25°.In addition, the axes of these holes 9b are inclined relative to the axis of the nozzle 7b at an angle preferably equal to 25 °.

La buse 7b est constituée d'un corps 21, muni d'une chambre cylindrique 23, de diamètre donné, permettant le passage des engrais liquides dans la buse. Ce corps 21 réalisé de préférence en matière plastique rigide, présente sur sa face 25 de sortie du fluide, une forme conique de sorte que les axes des trous 9b sont perpendiculaires à ladite face 25.The nozzle 7b consists of a body 21, provided with a cylindrical chamber 23, of given diameter, allowing the passage of liquid fertilizers in the nozzle. This body 21 preferably made of rigid plastic material, has on its face 25 for outlet of the fluid, a conical shape so that the axes of the holes 9b are perpendicular to said face 25.

Cette buse 7b comprend, de plus, une pastille calibrée 27, réalisée de préférence en alumine présentant une pureté de 99,5 %, située à l'entrée du liquide dans la buse 7a et définissant un passage 29 pour permettre l'écoulement du liquide dont le diamètre est inférieur au diamètre de la chambre 23. Cette pastille 27 comporte une face concave 31 permettant de limiter le débit du liquide entrant dans la buse 7a et de canaliser celui-ci. En effet, le liquide arrivant sur cette face concave 31, rencontre une restriction 33 à angle droit du passage 29 créant une perte de charge importante. Ceci permet,ainsi que l'existence d'un passage 29 de diamètre plus petit que le diamètre de la chambre 23, de diminuer le débit de liquide sortant de la buse.This nozzle 7b further comprises a calibrated pellet 27, preferably made of alumina having a purity of 99.5%, located at the inlet of the liquid in the nozzle 7a and defining a passage 29 to allow the liquid to flow whose diameter is less than the diameter of the chamber 23. This pellet 27 has a concave face 31 making it possible to limit the flow rate of the liquid entering the nozzle 7a and to channel it. Indeed, the liquid arriving on this concave face 31, meets a restriction 33 at right angles to the passage 29 creating a significant pressure drop. This allows, as well as the existence of a passage 29 of diameter smaller than the diameter of the chamber 23, to reduce the flow of liquid leaving the nozzle.

De plus cette restriction 33 du passage 29 possède un diamètre dont l'ordre de grandeur est situé entre 0,7 mm et 1,8 mm et inférieur au diamètre des trous 9b, dont l'ordre de grandeur est situé entre 1,4 mm et 2,5 mm. Une restriction 33, et des trous 9b plus petits conduiraient à un bouchage de la buse, tandis qu'une restriction 33 et des trous 9b plus grands conduiraient à un débit d'épandage des engrais trop important.In addition, this restriction 33 of passage 29 has a diameter whose order of magnitude is located between 0.7 mm and 1.8 mm and less than the diameter of the holes 9b, whose order of magnitude is located between 1.4 mm and 2.5 mm. A restriction 33, and smaller holes 9b would lead to blockage of the nozzle, while a restriction 33 and larger holes 9b would lead to an excessive fertilizer spreading rate.

Cette pastille 27 peut être placée sur le dessus du corps de la buse 21 et sa section est alors égale à la section de l'extrémité 35 du corps de la buse 21. Dans ces conditions, la pastille 27 est représentée par la référence 27a. Les moyens de fixation de la pastille 27a sont constitués par une bague d'accouplement 37 réalisée de préférence en matière plastique souple, emprisonnant la pastille 27a. et venant prendre appui sur l'extrémité 35 du corps de la buse 21 ,constituant un décrochement.This pad 27 can be placed on top of the body of the nozzle 21 and its section is then equal to the section of the end 35 of the body of the nozzle 21. Under these conditions, the pad 27 is represented by the reference 27a. The means for fixing the pad 27a consist of a coupling ring 37 preferably made of flexible plastic, trapping the pad 27a. and coming to bear on the end 35 of the body of the nozzle 21, constituting a step.

Cette bague d'accouplement est, bien entendu, munie d'une ouverture 39 de façon à permettre l'introduction des engrais liquides dans la buse.This coupling ring is, of course, provided with an opening 39 so as to allow the introduction of liquid fertilizers into the nozzle.

Dans un autre mode de réalisation, la pastille calibrée référencée 27b peut être placée dans la chambre 23 du corps de la buse 21. Cette chambre 23 comprenant sur ses parois un décrochement 41 créant une diminution du diamètre de la chambre 23, permet la fixation à force de la pastille 27b dont le diamètre est supérieur au diamètre de la chambre 23 défini après le décrochement 41. De toute façon, quels que soient les moyens de fixation de la pastille 27 sur le corps de la buse 21, ce décrochement 41 existe, ce qui permet à l'agriculteur d'adapter la buse de pulvérisation 7a sur le barillet 5 (figure 2) suivant le diamètre de la sortie filetée 15.In another embodiment, the calibrated pellet referenced 27b can be placed in the chamber 23 of the body of the nozzle 21. This chamber 23 comprising on its walls a recess 41 creating a reduction in the diameter of the chamber 23, allows attachment to force of the patch 27b, the diameter of which is greater than the diameter of the chamber 23 defined after the recess 41. In any case, whatever the means of fixing the pellet 27 on the body of the nozzle 21, this recess 41 exists, which allows the farmer to adapt the spray nozzle 7a on the barrel 5 (FIG. 2) according to the diameter of the threaded outlet 15.

Cette buse suivant la dimension de la restriction 33 du passage 29 et des trous 9a peut délivrer les engrais liquides sous la forme de gouttelettes de 0,5 à 2 mm de diamètre pour une pression d'arrivée des engrais liquides allant de 0,5 à 10 bars, car le débit de pulvérisation des engrais liquides dépend non seulement de la dimension de la restriction 33 et des trous 9a, mais aussi de la pression sous laquelle arrivent les liquides dans la buse.This nozzle, depending on the dimension of the restriction 33 of the passage 29 and of the holes 9a, can deliver the liquid fertilizers in the form of droplets of 0.5 to 2 mm in diameter for an inlet pressure of the liquid fertilizers ranging from 0.5 to 10 bars, because the spray rate of liquid fertilizers depends not only on the size of the restriction 33 and the holes 9a, but also on the pressure under which the liquids arrive in the nozzle.

Le tableau ci-après permet de donner une idée des débits de pulvérisation que l'on peut obtenir suivant la dimension de la restriction et la pression des engrais liquides. Le cas de l'eau de densité 1 et d'un engrais liquide contenant 40 % d'azote et de densité de 1,28 y est illustré.

Figure imgb0001
The table below gives an idea of the spray rates that can be obtained depending on the size of the restriction and the pressure of liquid fertilizers. The case of water of density 1 and a liquid fertilizer containing 40% nitrogen and density of 1.28 is illustrated.
Figure imgb0001

Claims (12)

1. Buse de pulvérisation permettant la pulvérisation de liquide, caractérisée en ce qu'elle comprend : - un corps (21) muni d'une chambre cylindrique (23) de diamètre donné, permettant le passage du liquide dans la buse (7b) et comportant au niveau de la sortie du liquide de la buse plusieurs trous (9b) identiques, disposés à égale distance l'un de l'autre et dont les axes sont inclinés par rapport à l'axe de la buse ; - une pastille (27) située à l'entrée du liquide dans la buse (7a) définissant un passage (29) pour l'écoulement du liquide dont le diamètre est inférieur au diamètre de ladite chambre (23), ladite pastille (27) comportant à l'entrée une face concave (31) et une restriction (33) dudit passage (29) permettant de limiter le débit du liquide entrant dans la buse ; - des moyens de fixation (37 ou 41) permettant de fixer la pastille (27) au corps (21) de la buse. 1. Spray nozzle for spraying liquid, characterized in that it comprises: - a body (21) provided with a cylindrical chamber (23) of given diameter, allowing the passage of the liquid in the nozzle (7b) and comprising at the level of the exit of the liquid from the nozzle several identical holes (9b), arranged equidistant from each other and whose axes are inclined relative to the axis of the nozzle; - a pellet (27) located at the entry of the liquid into the nozzle (7a) defining a passage (29) for the flow of the liquid whose diameter is less than the diameter of said chamber (23), said pellet (27) comprising at the inlet a concave face (31) and a restriction (33) of said passage (29) making it possible to limit the flow of liquid entering the nozzle; - Fixing means (37 or 41) for fixing the patch (27) to the body (21) of the nozzle. 2. Buse de pulvérisation selon la revendication 1, caractérisée en ce que la chambre (23) comprend un décrochement (41) situé sur la paroi de la chambre (23).2. Spray nozzle according to claim 1, characterized in that the chamber (23) comprises a recess (41) located on the wall of the chamber (23). 3. Buse de pulvérisation selon la revendication 2, caractérisée en ce que le décrochement (41) situé sur la paroi de la chambre (23) et créant une diminution du diamètre de la chambre, sert de moyens de fixation de la pastille (27b) dont le diamètre est supérieur au diamètre de la chambre (23) défini après le décrochement (41).3. Spray nozzle according to claim 2, characterized in that the recess (41) located on the wall of the chamber (23) and creating a decrease in the diameter of the chamber, serves as means for fixing the pellet (27b) whose diameter is greater than the diameter of the chamber (23) defined after the recess (41). 4. Buse de pulvérisation selon l'une quelconque des revendications 1 et 2, caractérisée en ce que les moyens de fixation de la pastille sont constitués par une bague d'accouplement (37).4. Spray nozzle according to any one of claims 1 and 2, characterized in that the means for fixing the tablet consist of a coupling ring (37). 5. Buse de pulvérisation selon l'une quelconque des revendications 1 à 4, caractérisée en ce que le corps (21) de la buse est réalisé en matière plastique rigide.5. Spray nozzle according to any one of claims 1 to 4, characterized in that the body (21) of the nozzle is made of rigid plastic. 6. Buse de pulvérisation selon l'une quelconque des revendications 1 à 5, caractérisée en ce que la pastille (27) est réalisée en alumine.6. Spray nozzle according to any one of claims 1 to 5, characterized in that the tablet (27) is made of alumina. 7. Buse de pulvérisation selon l'une quelconque des revendications 1 à 6, caractérisée en ce que le corps (21) de la buse présente sur sa face (25) de sortie du fluide une forme conique de sorte que les axes des trous (9a) sont perpendiculaires à ladite face.7. Spray nozzle according to any one of claims 1 to 6, characterized in that the body (21) of the nozzle has on its face (25) of fluid outlet a conical shape so that the axes of the holes ( 9a) are perpendicular to said face. 8. Buse de pulvérisation selon l'une quelconque des revendications 1 à 7, caractérisée en.ce que l'inclinaison des axes des trous par rapporta l'axe de la buse est d'environ 25°.8. Spray nozzle according to any one of claims 1 to 7, characterized in that the inclination of the axes of the holes relative to the axis of the nozzle is approximately 25 °. 9. Buse de pulvérisation selon l'une quelconque des revendications 1 à 8, caractérisée en ce que la restriction (33) du passage (29) de la pastille (27) possède un diamètre dont l'ordre de grandeur est situé entre 0,7 mm et 1,8 mm.9. Spray nozzle according to any one of claims 1 to 8, characterized in that the restriction (33) of the passage (29) of the patch (27) has a diameter whose order of magnitude is between 0, 7 mm and 1.8 mm. 10. Buse de pulvérisation selon l'une quelconque des revendications 1 à 9, caractérisée en ce que les trous (9b) possèdent un diamètre dont l'ordre de grandeur est situé entre 1,4 mm et 2,5 mm.10. Spray nozzle according to any one of claims 1 to 9, characterized in that the holes (9b) have a diameter whose order of magnitude is between 1.4 mm and 2.5 mm. 11. Buse de pulvérisation selon les revendications 9 et 10, caractérisée en ce que le diamètre de la restriction (33) est inférieur au diamètre des trous (9b).11. Spray nozzle according to claims 9 and 10, characterized in that the diameter of the restriction (33) is less than the diameter of the holes (9b). 12. Buse de pulvérisation selon la revendication 3, caractérisée en ce que la bague d'accouplement (37) est réalisée en matière plastique souple.12. Spray nozzle according to claim 3, characterized in that the coupling ring (37) is made of flexible plastic.
EP81400264A 1980-02-28 1981-02-20 Spray nozzle, especially for a fertilizer Expired EP0037747B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81400264T ATE13390T1 (en) 1980-02-28 1981-02-20 SPRAY NOZZLE, ESPECIALLY FOR FERTILIZER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8004438A FR2477039A1 (en) 1980-02-28 1980-02-28 SPRAY NOZZLE, IN PARTICULAR FOR FERTILIZERS
FR8004438 1980-02-28

Publications (2)

Publication Number Publication Date
EP0037747A1 true EP0037747A1 (en) 1981-10-14
EP0037747B1 EP0037747B1 (en) 1985-05-22

Family

ID=9239105

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EP81400264A Expired EP0037747B1 (en) 1980-02-28 1981-02-20 Spray nozzle, especially for a fertilizer

Country Status (13)

Country Link
US (1) US4372494A (en)
EP (1) EP0037747B1 (en)
AT (1) ATE13390T1 (en)
AU (1) AU537320B2 (en)
BR (1) BR8101144A (en)
CA (1) CA1167885A (en)
DE (1) DE3170575D1 (en)
DK (1) DK150094C (en)
ES (1) ES264755Y (en)
FR (1) FR2477039A1 (en)
IE (1) IE50818B1 (en)
NO (1) NO156887C (en)
ZA (1) ZA811220B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2568445A1 (en) * 1984-08-03 1986-02-07 Desmarquest Ceramiques Tech Spray nozzle especially for fertilizers
DE3834670A1 (en) * 1987-10-14 1989-04-27 Spraying Systems Deutschland G Nozzle for the discharge of liquid fertiliser
DE3914551C1 (en) * 1989-05-03 1990-11-15 Lechler Gmbh & Co Kg, 7012 Fellbach, De

Families Citing this family (5)

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US5003646A (en) * 1987-04-14 1991-04-02 Hydro Air Industries, Inc. Hydrotherapy apparatus
US4998359A (en) * 1989-10-02 1991-03-12 The Rhymer Company Automatic wax lubricator for flatwork ironer
DE4230056A1 (en) * 1992-09-08 1994-03-10 Man Nutzfahrzeuge Ag Atomizer device
WO2003017748A1 (en) * 2001-08-13 2003-03-06 Hardi International A/S A nozzle
US11305142B2 (en) * 2018-01-12 2022-04-19 Carrier Corporation End cap agent nozzle

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US2495346A (en) * 1946-04-06 1950-01-24 Charles H Ramsdell Sprinkler head
FR1140623A (en) * 1956-01-27 1957-07-31 Improvements to sprinklers under water pressure, like sprinklers
US3191871A (en) * 1962-05-16 1965-06-29 Golden Arrow Mfg Ltd Crop sprayers
FR2184247A5 (en) * 1972-05-08 1973-12-21 Berthoud Sa
FR2280852A1 (en) * 1974-08-01 1976-02-27 Lechler Apparatebau Kg DEVICE FOR FIXING A NOZZLE TO A PIPE OF A WATER LINE, IN PARTICULAR
US4128206A (en) * 1977-05-31 1978-12-05 Delavan Corporation Low drift flat spray nozzle and method

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Publication number Priority date Publication date Assignee Title
US2495346A (en) * 1946-04-06 1950-01-24 Charles H Ramsdell Sprinkler head
FR1140623A (en) * 1956-01-27 1957-07-31 Improvements to sprinklers under water pressure, like sprinklers
US3191871A (en) * 1962-05-16 1965-06-29 Golden Arrow Mfg Ltd Crop sprayers
FR2184247A5 (en) * 1972-05-08 1973-12-21 Berthoud Sa
FR2280852A1 (en) * 1974-08-01 1976-02-27 Lechler Apparatebau Kg DEVICE FOR FIXING A NOZZLE TO A PIPE OF A WATER LINE, IN PARTICULAR
US4128206A (en) * 1977-05-31 1978-12-05 Delavan Corporation Low drift flat spray nozzle and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2568445A1 (en) * 1984-08-03 1986-02-07 Desmarquest Ceramiques Tech Spray nozzle especially for fertilizers
DE3834670A1 (en) * 1987-10-14 1989-04-27 Spraying Systems Deutschland G Nozzle for the discharge of liquid fertiliser
DE3914551C1 (en) * 1989-05-03 1990-11-15 Lechler Gmbh & Co Kg, 7012 Fellbach, De

Also Published As

Publication number Publication date
AU537320B2 (en) 1984-06-14
DE3170575D1 (en) 1985-06-27
DK86281A (en) 1981-08-29
EP0037747B1 (en) 1985-05-22
BR8101144A (en) 1981-09-01
DK150094B (en) 1986-12-08
ATE13390T1 (en) 1985-06-15
IE50818B1 (en) 1986-07-23
ES264755U (en) 1982-12-01
IE810383L (en) 1981-08-28
ZA811220B (en) 1982-03-31
NO156887B (en) 1987-09-07
ES264755Y (en) 1983-06-01
CA1167885A (en) 1984-05-22
NO810611L (en) 1981-08-31
NO156887C (en) 1987-12-16
AU6757381A (en) 1981-09-03
DK150094C (en) 1987-06-15
FR2477039B1 (en) 1984-12-07
FR2477039A1 (en) 1981-09-04
US4372494A (en) 1983-02-08

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