FR2614558A1 - Mirror nozzle for spraying liquid - Google Patents
Mirror nozzle for spraying liquid Download PDFInfo
- Publication number
- FR2614558A1 FR2614558A1 FR8706213A FR8706213A FR2614558A1 FR 2614558 A1 FR2614558 A1 FR 2614558A1 FR 8706213 A FR8706213 A FR 8706213A FR 8706213 A FR8706213 A FR 8706213A FR 2614558 A1 FR2614558 A1 FR 2614558A1
- Authority
- FR
- France
- Prior art keywords
- slot
- nozzle
- hole
- ground
- mirror
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
- B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
- B05B1/046—Outlets formed, e.g. cut, in the circumference of tubular or spherical elements
Landscapes
- Nozzles (AREA)
Abstract
Description
On sait que pour pulvériseur de faibles quantités dc liquide, par exemple phytosanitaire,sur des largeurs importantes, on utilise ce qu'on appelle dans la technique des buses miroirs c' est-A-dire des buses de pulvérisation comprenant un canal qui débouche dans une fente large ménagée dans celle-ci, le courant de liquide butant contre une face oblique de ladite fente pour entre renvoyé en direction du sol. It is known that for spraying small quantities of liquid, for example phytosanitary, over large widths, what is called in the technique of mirror nozzles is used, that is to say spray nozzles comprising a channel which opens into a wide slot formed therein, the stream of liquid abutting against an oblique face of said slot to enter returned towards the ground.
Le jet de pulvérisation réalisé présente donc une forme générale plate et triangulaire. The spray jet produced therefore has a generally flat and triangular shape.
Toutefois, les buses usuelles du genre en question que l'on peut se procurer actuellement dans le commerce ont des caractéristiques telles que la surface pouvant être traite sous une densité faible est relativement limitée. However, the usual nozzles of the kind in question which are currently available commercially have characteristics such that the surface which can be treated at a low density is relatively limited.
Les perfectionnements qui font l'objet de la présente invention visent à permettre la réalisation d'une buse miroir qui présente des caractéristiques telles qu'elle puisse assurer la pulvérisation d'un faible volume de liquide phytosanitaire sur une surface importante. Pour donner un ordre de grandeur des caractéristiques en question, une buse suivant l'invention permet le traitement d'un hectare avec seulement 20 litres de liquide. The improvements which are the subject of the present invention aim to allow the production of a mirror nozzle which has characteristics such that it can ensure the spraying of a small volume of phytosanitary liquid over a large area. To give an order of magnitude of the characteristics in question, a nozzle according to the invention allows the treatment of one hectare with only 20 liters of liquid.
A cet effet, la buse miroir suivant l'invention comprend une fente mince orientée obliquement vers le sol en direction de l'amont de l'écoulement du liquide dans cette buse, l'épaisseur de cette fente étant de 1,1 à 1,2 fois le diamètre du canal d'amenée du liquide à la fente, lequel débouche avec précision de manière tangente par rapport au fond de la fente qui présente une forme concave en direction du sol. To this end, the mirror nozzle according to the invention comprises a thin slot oriented obliquely towards the ground in the direction of the upstream flow of the liquid in this nozzle, the thickness of this slot being from 1.1 to 1, 2 times the diameter of the liquid supply channel to the slit, which precisely opens tangentially to the bottom of the slit which has a concave shape in the direction of the ground.
Le dessin annexé, donné à titre d'exemple, permettra de mieux comprendre l'invention, les caractéristiques qu'elle pressente et les avantages qu'elle est susceptible de procurer
Fig. 1 est une vue en élévation d'une buse miroir établie conformément à l'invention.The appended drawing, given by way of example, will allow a better understanding of the invention, the characteristics which it senses and the advantages which it is likely to provide.
Fig. 1 is an elevational view of a mirror nozzle established in accordance with the invention.
Fig. 2 est une coupe suivant II-II (fig. 1). Fig. 2 is a section along II-II (fig. 1).
La buse illustrée en fig. 1 et que l'on a référencée sous le repère général 1, comprend tout d'abord un corps 2 a deux diamètres issu d'une collerette 3 servant à sa fixation à la manière connue par rapport A une lance ou autre élément semblable. Le corps 2 comprend donc une partie 2a adjacente à la collerette 3 et un élément extrême 2b. The nozzle illustrated in fig. 1 and which has been referenced under the general reference 1, firstly comprises a body 2 has two diameters from a flange 3 used for fixing it in the known manner with respect to a lance or other similar element. The body 2 therefore comprises a part 2a adjacent to the collar 3 and an end element 2b.
Dans la buse 1, on a ménagé un canal d'amenée central 4 comprenant A partir de la collerette 3, un entonnoir 4a ouvert vers ltextérieur et débouchant dans un trou cylindrique 4b. Celui-ci abwtit dans une fente 5 orientée obliquement en direction de l'amont de ltécoulement dans le canal 4b. In the nozzle 1, a central supply channel 4 has been provided comprising, starting from the collar 3, a funnel 4a open towards the inside and opening into a cylindrical hole 4b. This abwtit in a slot 5 oriented obliquely towards the upstream flow in the channel 4b.
Conformément à l'invention, la largeur de la fente 5 est faible puisqu'elle cortespond à 1,1 à 1,2 fois le diamètre du trou 4b. Pour fixer les idées et de manière non limitative, pour un trou 4b de 0,8mm de diamètre,'l'épaisseur de la fente est de l,lmm. La tolérance de cette largeur est de l'ordre de + 0,05mm. According to the invention, the width of the slot 5 is small since it coresponds to 1.1 to 1.2 times the diameter of the hole 4b. To fix the ideas and without limitation, for a hole 4b of 0.8mm in diameter, the thickness of the slot is 1.1mm. The tolerance of this width is of the order of + 0.05mm.
Le fond 51 de la fente se trouve en gros perpendiculaire au plan longitudinal moyen de la fente 5, la jonction entre ledit fond 51 et sa face 52 oppose au trou 4b étant constituée par un congé 53 dont le rayon est avantageusement, mais non exclusivement, de 0,5mm. The bottom 51 of the slot is roughly perpendicular to the mean longitudinal plane of the slot 5, the junction between said bottom 51 and its face 52 opposite the hole 4b being constituted by a leave 53 whose radius is advantageously, but not exclusively, 0.5mm.
Comme illustré en fig. 2, le trou 4b débouche de manière précise au milieu du fond 51 de la fente 5. Celui-ci présente une forme concave en direction du sol. Ses arêtes extrêmes 51a, 51b qui sont ses intersections avec la périphérie de l'element 2b de la buse, déterminent un angle au centre obtus a inférieur à 1800. Cet angle au centre part de l'axe du trou 4b en étant ouvert en direction du point de tangence de ce trou avec le fond 51. As illustrated in fig. 2, the hole 4b opens out precisely in the middle of the bottom 51 of the slot 5. The latter has a concave shape in the direction of the ground. Its extreme edges 51a, 51b which are its intersections with the periphery of the element 2b of the nozzle, determine an angle at the obtuse center a less than 1800. This angle at the center starts from the axis of the hole 4b while being open in the direction of the point of tangency of this hole with the bottom 51.
On a ainsi réalisé une buse miroir qui permet de réaliser un angle au sommet du jet de pulvérisation de l'ordre de 145 à 1600 avec un debit par hectare de liquide de traitement variant de 20 A 50 litres pour une vitesse d'avance d'un homme en marche, c' est-a-dire d'environ 4km/h. A mirror nozzle was thus produced which makes it possible to produce an angle at the top of the spray jet of the order of 145 to 1600 with a flow rate per hectare of treatment liquid varying from 20 to 50 liters for an advance speed of a man on the move, that is to say about 4 km / h.
I1 doit d'ailleurs être entendu que la description qui précède n'a été donnée qu'A titre d'exemple et qu'elle ne limite nullement le domaine de l'invention dont on ne sortirait pas en remplaçant les détails d'exécution décrits par tous autres équivalents. It should moreover be understood that the foregoing description has been given only by way of example and that it in no way limits the field of the invention from which one would not depart by replacing the execution details described by all other equivalents.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8706213A FR2614558B1 (en) | 1987-04-28 | 1987-04-28 | MIRROR NOZZLE FOR LIQUID SPRAYING |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8706213A FR2614558B1 (en) | 1987-04-28 | 1987-04-28 | MIRROR NOZZLE FOR LIQUID SPRAYING |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2614558A1 true FR2614558A1 (en) | 1988-11-04 |
FR2614558B1 FR2614558B1 (en) | 1989-08-25 |
Family
ID=9350704
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8706213A Expired FR2614558B1 (en) | 1987-04-28 | 1987-04-28 | MIRROR NOZZLE FOR LIQUID SPRAYING |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2614558B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160305277A1 (en) * | 2013-12-06 | 2016-10-20 | Nuovo Pignone Srl | Washing nozzles and gas turbine engines |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB718847A (en) * | 1952-09-25 | 1954-11-24 | Allman Patents Ltd | Improvements in spraying apparatus |
US2864652A (en) * | 1955-09-16 | 1958-12-16 | Spraying Systems Co | Wide spread fan shaped spray discharge nozzle |
US3675855A (en) * | 1971-04-12 | 1972-07-11 | Quaker Oats Co | Spray discharge nozzle |
FR2400835A1 (en) * | 1977-07-06 | 1979-03-23 | Rain Bird Sprinkler Mfg | CONSTRUCTION OF A TWO-PIECE, WEAR-RESISTANT SPRINKLER NOZZLE |
-
1987
- 1987-04-28 FR FR8706213A patent/FR2614558B1/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB718847A (en) * | 1952-09-25 | 1954-11-24 | Allman Patents Ltd | Improvements in spraying apparatus |
US2864652A (en) * | 1955-09-16 | 1958-12-16 | Spraying Systems Co | Wide spread fan shaped spray discharge nozzle |
US3675855A (en) * | 1971-04-12 | 1972-07-11 | Quaker Oats Co | Spray discharge nozzle |
FR2400835A1 (en) * | 1977-07-06 | 1979-03-23 | Rain Bird Sprinkler Mfg | CONSTRUCTION OF A TWO-PIECE, WEAR-RESISTANT SPRINKLER NOZZLE |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160305277A1 (en) * | 2013-12-06 | 2016-10-20 | Nuovo Pignone Srl | Washing nozzles and gas turbine engines |
US10669884B2 (en) * | 2013-12-06 | 2020-06-02 | Nuovo Pignone Srl | Washing nozzles and gas turbine engines |
Also Published As
Publication number | Publication date |
---|---|
FR2614558B1 (en) | 1989-08-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
AU | Other action affecting the ownership or exploitation of an industrial property right | ||
ST | Notification of lapse |