FR2786412A1 - Method and device for automatic pulverizing of liquids by compressed air for sanitary use in agriculture - Google Patents

Method and device for automatic pulverizing of liquids by compressed air for sanitary use in agriculture Download PDF

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Publication number
FR2786412A1
FR2786412A1 FR9815096A FR9815096A FR2786412A1 FR 2786412 A1 FR2786412 A1 FR 2786412A1 FR 9815096 A FR9815096 A FR 9815096A FR 9815096 A FR9815096 A FR 9815096A FR 2786412 A1 FR2786412 A1 FR 2786412A1
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Prior art keywords
compressed air
pressure
air tank
maintained
tank
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Granted
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FR9815096A
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French (fr)
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FR2786412B1 (en
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Gonzague Derly
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    • 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
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B05B7/2416—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle characterised by the means for producing or supplying the atomising fluid, e.g. air hoses, air pumps, gas containers, compressors, fans, ventilators, their drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/0805—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material

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Abstract

The method has the following stages: - produce the compressed air; - fill an air reservoir at a set pressure; - maintain the set pressure during the whole of the pulverizing process. The device has a reservoir for compressed air at a set pressure. The device has an electric motor-compressor (11), fed from a rechargeable battery (12), controlled by a pressure meter (14) connected to the compressed air 2 liter capacity reservoir (13), pressure being maintained between 2 and 4 bars, dependent upon use. The device is integrated into a portable structure (15) connected to a back harness (16)

Description

L'invention concerne un appareil de production d'air comprimé autonome, utilisable notamment pour la pulvérisation de produits de traitement dans le cadre de leur expérimentation phytosanitaire.The invention relates to an autonomous compressed air production device, usable in particular for spraying treatment products as part of their phytosanitary experimentation.

Il est connu d'utiliser en agriculture, pour des traitements phytosanitaires localisés ou l'expérimentation de produits de traitement, des appareils de pulvérisation portables, se fixant généralement avec des bretelles sur le dos des utilisateurs.It is known to use in agriculture, for localized phytosanitary treatments or the experimentation of treatment products, portable spraying devices, generally fastening with suspenders on the back of users.

Les plus anciens des appareils de ce type comportaient : une cuve, généralement en cuivre, servant de réservoir au liquide à pulvériser, une petite pompe à piston, fixée à la base de la cuve et communiquant avec celle-ci, une tuyauterie reliant la pompe à une canne creuse munie d'un gicleur à débit et finesse de pulvérisation réglables, et un levier permettant d'actionner la petite pompe avec le bras resté libre.The oldest of the devices of this type included: a tank, generally made of copper, serving as a reservoir for the liquid to be sprayed, a small piston pump, fixed to the base of the tank and communicating with it, a pipe connecting the pump a hollow cane fitted with a nozzle with adjustable spray rate and finesse, and a lever allowing the small pump to be actuated with the arm remaining free.

De tels appareils, bien que de conception très simple et par conséquent faciles à entretenir, ne permettaient pas, cependant, d'obtenir une pulvérisation régulière et de qualité constante quant à la finesse des gouttelettes constituant le brouillard de produit projeté (gouttes plus grosses au début et à la fin de chaque impulsion).Such devices, although very simple in design and therefore easy to maintain, did not, however, make it possible to obtain regular spraying and of constant quality as regards the fineness of the droplets constituting the mist of sprayed product (larger drops at the start and end of each pulse).

La technologie ayant évolué au cours des dernières décennies, il est devenu possible d'obtenir une pulvérisation plus régulière et plus facile, en recourant à une pompe rotative mue par un petit moteur électrique alimenté par une batterie d'accumulateurs électriques. Cependant, bien qu'avec ce moyen la pulvérisation soit devenue moins pénible, la qualité de celle-ci n'était pas sensiblement améliorée. As technology has evolved in recent decades, it has become possible to obtain a more regular and easier spraying, by using a rotary pump driven by a small electric motor powered by an electric accumulator battery. However, although with this means the spraying became less painful, the quality thereof was not appreciably improved.

Afin d'éliminer l'effet de gouttes en début et en fin de pulvérisation et d'obtenir une brumisation satisfaisante, on a recouru, ces dernières années, aux gaz comprimés comme moyen de propulsion, à savoir l'air comprimé et le gaz propane. Les bouteilles étaient chargées en atelier et devaient, pour une question d'efficacité et de potentiel, tre d'assez grande capacité, ce qui rendait l'appareil de pulvérisation lourd et encombrant.In order to eliminate the effect of drops at the beginning and at the end of spraying and to obtain a satisfactory misting, use has been made, in recent years, of compressed gases as a means of propulsion, namely compressed air and propane gas. . The bottles were loaded in the workshop and had, for a question of efficiency and potential, to be of relatively large capacity, which made the spraying apparatus heavy and bulky.

La présente invention a pour but de remédier à ces inconvénients, tout en conservant les avantages offerts par les gaz comprimés dans le fractionnement et la propulsion des liquides, et tout particulièrement des liquides de traitement phytosanitaires.The present invention aims to remedy these drawbacks, while retaining the advantages offered by compressed gases in the fractionation and propulsion of liquids, and very particularly of phytosanitary treatment liquids.

Cette invention, telle qu'elle se caractérise, résout le problème consistant à définir un procédé et à créer un appareil de production et d'accumulation d'air comprimé autonome, transportable ou portable, avec lequel, d'une part, l'énergie nécessaire à son fonctionnement puisse tre aisément intégrée à un support dorsal en plus des moyens de production d'air comprimé, et, d'autre part, un stock tampon d'air comprimé puisse tre entretenu, afin de maintenir à la pulvérisation une qualité constante pendant toute la durée du traitement.This invention, as it is characterized, solves the problem of defining a process and creating an apparatus for producing and accumulating autonomous compressed air, transportable or portable, with which, on the one hand, the energy necessary for its operation can be easily integrated into a back support in addition to the means for producing compressed air, and, on the other hand, a buffer stock of compressed air can be maintained, in order to maintain at spraying a constant quality for the duration of the treatment.

Le procédé de production et d'accumulation d'air comprimé autonome selon l'invention, se caractérise en ce qu'il à : -produire de l'air comprimé, -constituer une réserve d'air comprimé, -amener la réserve d'air comprimé à une pression prédéterminée, -maintenir, au cours de l'utilisation, la réserve d'air à la pression prédéterminée. The independent compressed air production and accumulation process according to the invention is characterized in that it: -produces compressed air, -constitutes a reserve of compressed air,-brings the reserve of compressed air at a predetermined pressure, -maintain, during use, the reserve of air at the predetermined pressure.

Le maintien de la pression prédéterminée dans la réserve d'air est obtenu par annulation et réactivation de la production d'air comprimé, en respectant une valeur de consigne déterminée en fonction de la pression à obtenir et à maintenir.Maintaining the predetermined pressure in the air reserve is obtained by canceling and reactivating the production of compressed air, while respecting a set value determined as a function of the pressure to be obtained and maintained.

Le dispositif permettant la mise en oeuvre du procédé selon l'invention se caractérise en ce qu'il est constitué, pour l'essentiel, d'un moto-compresseur électrique, alimenté par une batterie d'accumulateurs, relié à un réservoir d'air comprimé équipé d'un pressostat contrôlant la mise sous tension du motocompresseur électrique en fonction de la valeur de consigne préaffichée sur le pressostat.The device allowing the implementation of the method according to the invention is characterized in that it consists, essentially, of an electric motor-compressor, powered by a storage battery, connected to a reservoir of compressed air equipped with a pressure switch controlling the energization of the electric motor-compressor according to the pre-set value displayed on the pressure switch.

De préférence, la batterie d'accumulateurs est une batterie sèche.Preferably, the storage battery is a dry battery.

Le dispositif est intégré à une structure, transportable ou portable, reliée par une armature à un harnais de fixation dorsale.The device is integrated into a structure, transportable or portable, connected by a frame to a dorsal attachment harness.

La capacité du réservoir d'air comprimé est d'environ 2 litres et la pression de l'air emmagasiné dans celui-ci est de 2 à 4 bars.The capacity of the compressed air tank is approximately 2 liters and the pressure of the air stored in it is 2 to 4 bars.

Les avantages obtenus, grâce à cette invention, consistent, essentiellement, en ce que la propulsion et la pulvérisation du liquide sont assurées par un gaz comprimé, fourni à une pression déterminée en fonction de la nature et de la viscosité du liquide à pulvériser, en ce que la réserve d'air comprimé est réduite à un très faible volume et en ce que l'encombrement et la masse de l'ensemble sont ainsi réduits à un niveau très acceptable pour une utilisation autonome, mme d'assez longue durée.The advantages obtained, thanks to this invention, consist essentially in that the propulsion and spraying of the liquid are ensured by a compressed gas, supplied at a pressure determined according to the nature and the viscosity of the liquid to be sprayed, in that the reserve of compressed air is reduced to a very small volume and in that the overall size and mass of the assembly are thus reduced to a very acceptable level for autonomous use, even of fairly long duration.

D'autres caractéristiques et avantages apparaîtront dans la description qui va suivre d'un appareil autonome de pulvérisation de produits de traitement phytosanitaire expérimental, donné à titre d'exemple non limitatif, au regard du dessin annexé représentant une vue schématique de l'appareil.Other characteristics and advantages will appear in the following description of an autonomous device for spraying experimental phytosanitary treatment products, given by way of nonlimiting example, with regard to the appended drawing representing a schematic view of the device.

La figure représente un appareil de traitement 10, comportant un moto-compresseur électrique 11, une batterie 12, un réservoir d'air comprimé 13 et un pressostat 14, incorporé à une structure 15 reliée à un harnais dorsal 16.The figure represents a processing device 10, comprising an electric motor-compressor 11, a battery 12, a compressed air tank 13 and a pressure switch 14, incorporated into a structure 15 connected to a back harness 16.

En examinant maintenant plus en détail la figure unique du dessin, on remarque que le réservoir d'air comprimé 13 est mis et maintenu à une pression déterminée de 2 à 4 bars par le moto-compesseur électrique 11, sous contrôle du pressostat 14 relié au réservoir d'air comprimé 13 et disposé sur le circuit d'alimentation électrique reliant la batterie 12 au motocompresseur 11. By now examining in more detail the single figure of the drawing, it is noted that the compressed air tank 13 is put and maintained at a determined pressure of 2 to 4 bars by the electric motor-compressor 11, under control of the pressure switch 14 connected to the compressed air tank 13 and arranged on the electrical supply circuit connecting the battery 12 to the motor compressor 11.

Ainsi, comme on le remarque, le réservoir d'air comprimé 13 fourni, en permanence, au système de pulvérisation, une pression d'air prédéterminée, qui est maintenue pendant toute la durée de la pulvérisation, ce qui permet d'obtenir un brouillard de gouttelettes de dimension constante, projetées à une distance suffisante pour obtenir un traitement de très bonne qualité, permettant ainsi d'utiliser l'appareil pour des expérimentations phytosanitaires.Thus, as can be seen, the compressed air reservoir 13 permanently supplies the spraying system with a predetermined air pressure, which is maintained throughout the duration of the spraying, which makes it possible to obtain a mist. droplets of constant size, projected at a sufficient distance to obtain a treatment of very good quality, thus allowing the device to be used for phytosanitary experiments.

L'appareil selon l'invention peut tre appliqué à d'autres domaines que celui du traitement phytosanitaire, sous réserve d'adaptations mineures ne sortant pas du cadre de l'invention. The apparatus according to the invention can be applied to fields other than that of phytosanitary treatment, subject to minor adaptations which do not depart from the scope of the invention.

Claims (8)

REVENDICATIONS 1. Procédé de pulvérisation de liquides par air comprimé à l'aide d'un appareil autonome mettant en oeuvre un réservoir d'air comprimé, caractérisé en ce qu'il consiste à effectuer les opérations suivantes : -produire de l'air comprimé, -remplir le réservoir d'air à une pression prédéterminée, -maintenir cette pression prédéterminée pendant toute la durée de la pulvérisation.CLAIMS 1. Process for spraying liquids by compressed air using an autonomous device using a compressed air tank, characterized in that it consists in performing the following operations: -producing compressed air , - fill the air tank to a predetermined pressure, - maintain this predetermined pressure throughout the duration of the spraying. 2. Procédé selon la revendication 1, caractérisé en ce que la pression prédéterminée dans le réservoir est obtenue par annulation et réactivation de la production d'air, en respectant une valeur de consigne déterminée en fonction de la pression à obtenir et à maintenir.2. Method according to claim 1, characterized in that the predetermined pressure in the tank is obtained by canceling and reactivating the production of air, while respecting a set value determined as a function of the pressure to be obtained and maintained. 3. Dispositif permettant la mise en oeuvre du procédé selon la revendication 1, mettant en oeuvre un réservoir d'air comprimé maintenu à une pression prédéterminée, caractérisé en ce qu'il comporte, principalement, un moto-compresseur électrique (11), alimenté en électricité par une batterie (12) d'accumulateurs, sous contrôle d'un pressostat (14) relié au réservoir d'air comprimé (13).3. Device allowing the implementation of the method according to claim 1, using a compressed air tank maintained at a predetermined pressure, characterized in that it comprises, mainly, an electric motor-compressor (11), supplied in electricity by a battery (12) of accumulators, under the control of a pressure switch (14) connected to the compressed air tank (13). 4. Dispositif selon la revendication 3, caractérisé en ce que la batterie d'accumulateurs d'électricité (12) est une batterie sèche.4. Device according to claim 3, characterized in that the electricity storage battery (12) is a dry battery. 5. Dispositif selon l'une des revendications 3 et 4, caractérisé en ce qu'il est intégré à une structure (15), transportable ou portable, reliée par une armature à un harnais (16) de fixation dorsale.  5. Device according to one of claims 3 and 4, characterized in that it is integrated into a structure (15), transportable or portable, connected by a frame to a harness (16) of dorsal attachment. 6. Dispositif selon la revendication 3, caractérisé en ce que la capacité du réservoir d'air comprimé (13) est d'environ 2 litres.6. Device according to claim 3, characterized in that the capacity of the compressed air tank (13) is approximately 2 liters. 7. Dispositif selon la revendication 3, caractérisé en ce que l'air conservé dans le réservoir d'air comprimé (13) est maintenu à une pression de 2 à 4 bars, prédéterminée en fonction de l'utilisation.7. Device according to claim 3, characterized in that the air kept in the compressed air tank (13) is maintained at a pressure of 2 to 4 bars, predetermined depending on the use. 8. Application du procédé selon les revendications 1 et 2 et du 8. Application of the method according to claims 1 and 2 and of dispositif selon les revendications 3 à 7 à l'expérimentation device according to claims 3 to 7 for experimentation phytosanitaire.  phytosanitary.
FR9815096A 1998-11-27 1998-11-27 SELF-CONTAINED COMPRESSED AIR PRODUCTION METHOD AND DEVICE Expired - Fee Related FR2786412B1 (en)

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FR9815096A FR2786412B1 (en) 1998-11-27 1998-11-27 SELF-CONTAINED COMPRESSED AIR PRODUCTION METHOD AND DEVICE

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FR9815096A FR2786412B1 (en) 1998-11-27 1998-11-27 SELF-CONTAINED COMPRESSED AIR PRODUCTION METHOD AND DEVICE

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FR2786412B1 FR2786412B1 (en) 2001-07-13

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001092723A1 (en) * 2000-05-31 2001-12-06 Damir Sever Electric compressor back sprayer
WO2017129548A1 (en) * 2016-01-28 2017-08-03 Laboratoire National De Metrologie Et D'essais Calibration appliance of a particle analyser
CN107457106A (en) * 2017-08-23 2017-12-12 力达（江西）机电有限公司 A kind of Portable back-carrying packet mode is without oil machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3022913A1 (en) * 1980-06-19 1981-12-24 Alfred Dipl.-Volksw. 8135 Söcking Becker Atomiser unit with pressure vessel - has pluggable compressed air charger and atomising head with nozzle and non-return valve
DE3639481A1 (en) * 1985-11-21 1988-05-19 Schneider Druckluft Gmbh Compressed-air compressor
NZ235383A (en) * 1990-09-19 1994-07-26 Graham John Colin Crawshaw Pollen spraying device: pollen reservoir and battery-powered compressor carried in knapsack
EP0663242A1 (en) * 1993-06-29 1995-07-19 Atenals, S.L., Spraying device
FR2742362A1 (en) * 1995-12-13 1997-06-20 Bouhet Bruno Portable autonomous liquid sprayer for spraying plants or vegetables

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3022913A1 (en) * 1980-06-19 1981-12-24 Alfred Dipl.-Volksw. 8135 Söcking Becker Atomiser unit with pressure vessel - has pluggable compressed air charger and atomising head with nozzle and non-return valve
DE3639481A1 (en) * 1985-11-21 1988-05-19 Schneider Druckluft Gmbh Compressed-air compressor
NZ235383A (en) * 1990-09-19 1994-07-26 Graham John Colin Crawshaw Pollen spraying device: pollen reservoir and battery-powered compressor carried in knapsack
EP0663242A1 (en) * 1993-06-29 1995-07-19 Atenals, S.L., Spraying device
FR2742362A1 (en) * 1995-12-13 1997-06-20 Bouhet Bruno Portable autonomous liquid sprayer for spraying plants or vegetables

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001092723A1 (en) * 2000-05-31 2001-12-06 Damir Sever Electric compressor back sprayer
WO2017129548A1 (en) * 2016-01-28 2017-08-03 Laboratoire National De Metrologie Et D'essais Calibration appliance of a particle analyser
FR3047312A1 (en) * 2016-01-28 2017-08-04 Laboratoire Nat De Metrologie Et Dessais APPARATUS FOR CALIBRATING A PARTICULATE ANALYZER
CN107457106A (en) * 2017-08-23 2017-12-12 力达（江西）机电有限公司 A kind of Portable back-carrying packet mode is without oil machine

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