ITBO20100204A1 - PNEUMATIC SPRAYER - Google Patents
PNEUMATIC SPRAYER Download PDFInfo
- Publication number
- ITBO20100204A1 ITBO20100204A1 IT000204A ITBO20100204A ITBO20100204A1 IT BO20100204 A1 ITBO20100204 A1 IT BO20100204A1 IT 000204 A IT000204 A IT 000204A IT BO20100204 A ITBO20100204 A IT BO20100204A IT BO20100204 A1 ITBO20100204 A1 IT BO20100204A1
- Authority
- IT
- Italy
- Prior art keywords
- manifold
- pneumatic nebulizer
- nebulizer according
- liquid product
- tank
- Prior art date
Links
- 239000006199 nebulizer Substances 0.000 claims description 18
- 239000006096 absorbing agent Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims description 3
- 239000012263 liquid product Substances 0.000 claims 7
- 238000006073 displacement reaction Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 21
- 239000000203 mixture Substances 0.000 description 21
- 230000002141 anti-parasite Effects 0.000 description 4
- 239000003096 antiparasitic agent Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
- B05B9/0403—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 with pumps for liquids or other fluent material
- B05B9/0423—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 with pumps for liquids or other fluent material for supplying liquid or other fluent material to several spraying apparatus
-
- 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
- A01M7/0003—Atomisers or mist blowers
- A01M7/0014—Field atomisers, e.g. orchard atomisers, self-propelled, drawn or tractor-mounted
-
- 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
-
- 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
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
- B05B1/3013—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being a lift valve
-
- 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
- B05B7/2486—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 with means for supplying liquid or other fluent material to several discharge devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
-
- 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
- B05B7/0012—Apparatus for achieving spraying before discharge from the apparatus
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Insects & Arthropods (AREA)
- Pest Control & Pesticides (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Catching Or Destruction (AREA)
- Nozzles (AREA)
Description
DESCRIZIONE DESCRIPTION
del brevetto per invenzione industriale dal titolo: of the patent for industrial invention entitled:
“NEBULIZZATORE PNEUMATICO†⠀ œPNEUMATIC NEBULIZERâ €
La presente invenzione à ̈ relativa ad un nebulizzatore pneumatico. The present invention relates to a pneumatic nebulizer.
In particolare, la presente invenzione à ̈ relativa ad un nebulizzatore pneumatico per il trattamento di coltivazioni agricole con una miscela liquida antiparassitaria, cui la trattazione che segue farà esplicito riferimento senza per questo perdere in generalità . In particular, the present invention relates to a pneumatic nebulizer for the treatment of agricultural crops with a liquid antiparasitic mixture, to which the following discussion will make explicit reference without thereby losing generality.
Nel settore del trattamento delle coltivazioni agricole tramite l’utilizzo di miscele liquide antiparassitarie, à ̈ noto realizzare un nebulizzatore pneumatico del tipo comprendente un serbatoio per una miscela liquida antiparassitaria; una pluralità di ugelli di erogazione; un circuito idraulico atto a collegare idraulicamente fra loro il serbatoio e gli ugelli; ed un circuito pneumatico di alimentazione di una corrente gassosa atta a nebulizzare la miscela liquida fuoriuscente dagli ugelli stessi. In the sector of the treatment of agricultural crops through the use of liquid antiparasitic mixtures, it is known to realize a pneumatic nebulizer of the type comprising a tank for a liquid antiparasitic mixture; a plurality of dispensing nozzles; a hydraulic circuit adapted to hydraulically connect the tank and the nozzles together; and a pneumatic circuit for feeding a gaseous stream adapted to nebulize the liquid mixture emerging from the nozzles themselves.
Generalmente, il circuito idraulico comprende almeno un collettore di distribuzione; una tubazione atta a collegare idraulicamente fra loro il serbatoio ed il collettore; un dispositivo valvolare per controllare selettivamente l’alimentazione della miscela liquida lungo la tubazione; e, per ciascun ugello, un rispettivo condotto di alimentazione atto a collegare idraulicamente fra loro il collettore e l’ugello stesso. Generally, the hydraulic circuit comprises at least one distribution manifold; a pipe suitable for hydraulically connecting the tank and the manifold to each other; a valve device for selectively controlling the feeding of the liquid mixture along the pipe; and, for each nozzle, a respective supply duct adapted to hydraulically connect the manifold and the nozzle itself.
I nebulizzatori pneumatici noti del tipo sopra descritto presentano il grave inconveniente costituito dal fatto che, quando l’operatore chiude il citato dispositivo valvolare per interrompere l’alimentazione della miscela liquida al collettore, la miscela liquida contenuta nel tratto di tubazione disposto a valle del dispositivo valvolare, nel collettore, e nei condotti di alimentazione, che comunicano fra loro tramite il collettore stesso, defluisce dagli ugelli e si sparge sul suolo con conseguente inquinamento ambientale. Known pneumatic nebulizers of the type described above have the serious drawback consisting in the fact that, when the operator closes the aforementioned valve device to interrupt the supply of the liquid mixture to the manifold, the liquid mixture contained in the pipe section arranged downstream of the valve device, in the manifold, and in the supply ducts, which communicate with each other through the manifold itself, flows out of the nozzles and spreads on the ground with consequent environmental pollution.
Scopo della presente invenzione à ̈ di realizzare un nebulizzatore pneumatico che sia esente dagli inconvenienti sopra descritti e che sia di semplice ed economica realizzazione. The object of the present invention is to provide a pneumatic nebulizer which is free from the drawbacks described above and which is simple and economical to manufacture.
Secondo la presente invenzione viene realizzato un nebulizzatore pneumatico secondo quanto rivendicato nelle rivendicazioni allegate. According to the present invention, a pneumatic nebulizer is produced according to what is claimed in the attached claims.
La presente invenzione verrà ora descritta con riferimento ai disegni annessi, che ne illustrano un esempio di attuazione non limitativo, in cui: The present invention will now be described with reference to the attached drawings, which illustrate a non-limiting example of embodiment, in which:
la figura 1 illustra uno schema di funzionamento di una preferita forma di attuazione del nebulizzatore pneumatico della presente invenzione; Figure 1 illustrates an operating diagram of a preferred embodiment of the pneumatic nebulizer of the present invention;
la figura 2 Ã ̈ una vista prospettica esplosa di un particolare della figura 1; e Figure 2 is an exploded perspective view of a detail of Figure 1; And
la figura 3 Ã ̈ una sezione longitudinale schematica, con parti asportate per chiarezza, del particolare della figura 2. figure 3 is a schematic longitudinal section, with parts removed for clarity, of the detail of figure 2.
Con riferimento alla figura 1, con 1 Ã ̈ indicato, nel suo complesso, un nebulizzatore pneumatico per il trattamento di coltivazioni agricole con una miscela liquida antiparassitaria. With reference to Figure 1, 1 indicates, as a whole, a pneumatic nebulizer for the treatment of agricultural crops with a liquid anti-parasitic mixture.
Il nebulizzatore 1 comprende un serbatoio 2 di contenimento della miscela liquida, una pluralità di ugelli 3 erogazione (nella fattispecie sei ugelli 3) di tipo noto, ed un circuito 4 idraulico per collegare idraulicamente fra loro il serbatoio 2 e gli ugelli 3. The nebulizer 1 comprises a tank 2 for containing the liquid mixture, a plurality of dispensing nozzles 3 (in this case six nozzles 3) of a known type, and a hydraulic circuit 4 for hydraulically connecting the tank 2 and the nozzles 3 together.
Gli ugelli 3 sono disposti all’interno di una bocca 5 di uscita di un circuito 6 pneumatico comprendente una sorgente nota e non illustrata (nella fattispecie un ventilatore centrifugo) atta a generare una corrente d’aria, la quale viene alimentata lungo il circuito 6 ed alla bocca 5 per nebulizzare la miscela liquida fuoriuscente dagli ugelli 3. The nozzles 3 are arranged inside an outlet 5 of a pneumatic circuit 6 comprising a known and not illustrated source (in this case a centrifugal fan) capable of generating a current of air, which is fed along the circuit 6 and to the mouth 5 to nebulize the liquid mixture coming out of the nozzles 3.
Secondo quanto illustrato nelle figure 1, 2, e 3, il circuito 4 à ̈ provvisto di un gruppo 7 di distribuzione comprendente un blocco 8 di supporto comprendente, a sua volta, una piastra 9 inferiore, la quale presenta la forma di un parallelepipedo rettangolo limitato superiormente da una superficie 10 sostanzialmente piana, ed à ̈ provvista di una cavità 11 di forma sostanzialmente cilindrica, che à ̈ disposta con la propria concavità rivolta verso l’alto, si apre verso l’esterno in corrispondenza della superficie 10, e presenta un asse 12 longitudinale sostanzialmente verticale. As illustrated in Figures 1, 2 and 3, the circuit 4 is provided with a distribution unit 7 comprising a support block 8 comprising, in turn, a lower plate 9, which has the shape of a rectangular parallelepiped limited at the top by a substantially flat surface 10, and is provided with a cavity 11 of a substantially cylindrical shape, which is arranged with its concavity facing upwards, opens outwards at the surface 10, and has a substantially vertical longitudinal axis 12.
La cavità 11 à ̈ chiusa da un coperchio 13 superiore, il quale, disponendosi a contatto della superficie 10, definisce, unitamente alla cavità 11, un collettore 14 di distribuzione collegato idraulicamente con il serbatoio 2 sia tramite una tubazione 15 di alimentazione provvista di una valvola 16 di non ritorno atta ad impedire il ritorno della miscela liquida nel serbatoio 2 lungo la tubazione 15 stessa, sia tramite una tubazione 17 di scarico provvista di una elettrovalvola 18 di intercettazione. The cavity 11 is closed by an upper cover 13, which, being in contact with the surface 10, defines, together with the cavity 11, a distribution manifold 14 connected hydraulically to the tank 2 both by means of a supply pipe 15 provided with a non-return valve 16 adapted to prevent the return of the liquid mixture into the tank 2 along the pipe 15 itself, either by means of a discharge pipe 17 provided with an interception solenoid valve 18.
La cavità 11 à ̈ limitata da una parete 19 di fondo sostanzialmente perpendicolare all’asse 12, ed à ̈ provvista di una flangia 20 anulare, la quale sporge verso l’alto dalla parete 19 coassialmente all’asse 12, à ̈ limitata superiormente da una superficie 21 piana sostanzialmente parallela alla parete 19, e presenta una pluralità di feritoie 22, che sono uniformemente distribuite attorno all’asse 12, e sono ricavate radialmente attraverso la flangia 20 stessa. The cavity 11 is limited by a bottom wall 19 substantially perpendicular to the axis 12, and is provided with an annular flange 20, which protrudes upwards from the wall 19 coaxially to the axis 12, is limited at the top by a flat surface 21 substantially parallel to the wall 19, and has a plurality of slots 22, which are uniformly distributed around the axis 12, and are obtained radially through the flange 20 itself.
Il collettore 14 à ̈ collegato idraulicamente con ciascun ugello 3 tramite un relativo condotto 23 di alimentazione, un cui tratto di ingresso à ̈ ricavato attraverso la piastra 9 e si apre sulla superficie 21 in corrispondenza di un foro 24 ed un cui tratto di uscita à ̈ ricavato all’esterno della piastra 9, à ̈ collegato con l’ugello 3, ed à ̈ provvisto di un rubinetto 25 di intercettazione. The manifold 14 is hydraulically connected to each nozzle 3 by means of a relative supply duct 23, an inlet portion of which is obtained through the plate 9 and opens onto the surface 21 in correspondence with a hole 24 and an outlet portion of which is It is obtained from the outside of the plate 9, is connected to the nozzle 3, and is equipped with an interception cock 25.
Il rubinetto 25 à ̈ provvisto di un’asta 26 di comando mobile lungo una scala 27 graduata ricavata su una placca 28 metallica fissata alla piastra 9 per consentire all’operatore di controllare selettivamente la portata di miscela liquida alimentata al relativo ugello 3. The tap 25 is provided with a control rod 26 which is movable along a graduated scale 27 obtained on a metal plate 28 fixed to the plate 9 to allow the operator to selectively control the flow rate of liquid mixture fed to the relative nozzle 3.
Il gruppo 7 comprende, inoltre, un dispositivo 29 di chiusura dei fori 24 e, quindi, dei condotti 23. The unit 7 also comprises a device 29 for closing the holes 24 and, therefore, the ducts 23.
Il dispositivo 29 comprende un motore 30 elettrico fissato sul coperchio 13, ed un albero 31 di trasmissione, il quale à ̈ montato coassialmente all’asse 12, ed à ̈ accoppiato tramite un accoppiamento vite madrevite ad un albero di uscita del motore 30 per compiere, rispetto al coperchio 13, spostamenti rettilinei in una direzione 32 sostanzialmente parallela all’asse 12 stesso. The device 29 comprises an electric motor 30 fixed on the cover 13, and a transmission shaft 31, which is mounted coaxially to the axis 12, and is coupled by means of a nut screw coupling to an output shaft of the motor 30 for perform, with respect to the cover 13, rectilinear movements in a direction 32 substantially parallel to the axis 12 itself.
L’albero 31 supporta un piattello 33 di chiusura, il quale à ̈ calzato sull’albero 31 coassialmente e perpendicolarmente all’asse 12, à ̈ provvisto di un elemento 34 anulare di tenuta affacciato alla flangia 20, ed à ̈ accoppiato in maniera scorrevole all’albero 31 tramite l’interposizione di una molla 35 ammortizzatrice. The shaft 31 supports a closing plate 33, which is fitted on the shaft 31 coaxially and perpendicular to the axis 12, is provided with an annular sealing element 34 facing the flange 20, and is coupled slidingly to the shaft 31 through the interposition of a shock absorber spring 35.
Il piattello 33 viene spostato dal motore 30 e, quindi, dall’albero 31 nella direzione 32 tra una posizione di chiusura (non illustrata), in cui l’elemento 34 si dispone a contatto della superficie 21 per chiudere a tenuta di fluido i fori 24, ed una posizione di apertura (figura 3) dei fori 24. The plate 33 is moved by the motor 30 and, therefore, by the shaft 31 in the direction 32 between a closed position (not shown), in which the element 34 is placed in contact with the surface 21 to seal fluidly the holes 24, and an opening position (Figure 3) of the holes 24.
A proposito di quanto sopra esposto à ̈ opportuno precisare che: Regarding the above, it should be noted that:
quando il piattello 33 à ̈ disposto nella sua posizione di apertura, l’elettrovalvola 18 à ̈ chiusa e la miscela liquida viene alimentata agli ugelli 3 lungo i relativi condotti 23; e when the plate 33 is arranged in its open position, the solenoid valve 18 is closed and the liquid mixture is fed to the nozzles 3 along the relative ducts 23; And
quando il piattello 33 à ̈ disposto nella sua posizione di chiusura, l’elettrovalvola 18 viene aperta per consentire lo scarico della miscela liquida nel serbatoio 2 in modo da mantenere sempre attiva la circolazione della miscela liquida lungo la tubazione 15 ed attraverso il gruppo 7 di distribuzione e da evitare, quindi, la formazione di depositi. when the plate 33 is placed in its closed position, the solenoid valve 18 is opened to allow the liquid mixture to be discharged into the tank 2 so as to keep the circulation of the liquid mixture always active along the pipe 15 and through the group 7 distribution and therefore the formation of deposits should be avoided.
Il circuito 4 comprende, inoltre, una pompa 36 centrifuga disposta lungo la tubazione 15 per prelevare la miscela liquida dal serbatoio 2 ed alimentare la miscela liquida stessa al collettore 14; ed un dispositivo 37 dosatore di tipo noto disposto lungo la tubazione 15 a valle della pompa 36 per consentire all’operatore di controllare selettivamente la portata di miscela liquida alimentata al collettore 14 stesso. The circuit 4 also comprises a centrifugal pump 36 arranged along the pipe 15 to withdraw the liquid mixture from the tank 2 and feed the liquid mixture itself to the manifold 14; and a known type metering device 37 arranged along the pipe 15 downstream of the pump 36 to allow the operator to selectively control the flow rate of liquid mixture fed to the manifold 14 itself.
Quando disposto nella sua posizione di chiusura, il piattello 33 consente di intercettare istantaneamente il flusso lungo i condotti 23, di isolare gli ugelli 3 uno dall’altro, e di evitare, quindi, la fuoriuscita della miscela liquida dagli ugelli 3, dal momento che la miscela liquida presente all’interno dei condotti 23 viene a trovarsi in una condizione di equilibrio idrostatico che impedisce il gocciolamento della miscela liquida all’esterno degli ugelli 3 stessi. When placed in its closed position, the plate 33 allows instantaneous interception of the flow along the ducts 23, to isolate the nozzles 3 from each other, and therefore to prevent the liquid mixture from escaping from the nozzles 3, from the moment that the liquid mixture present inside the ducts 23 is in a condition of hydrostatic equilibrium which prevents dripping of the liquid mixture outside the nozzles 3 themselves.
La presenza della tubazione 17 consente, inoltre, di effettuare, al termine del trattamento antiparassitario, il lavaggio dell’intero circuito 4 con un fluido di lavaggio. The presence of the pipe 17 also makes it possible to wash the entire circuit 4 with a washing fluid at the end of the pesticide treatment.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITBO2010A000204A IT1399134B1 (en) | 2010-04-02 | 2010-04-02 | PNEUMATIC SPRAYER |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITBO2010A000204A IT1399134B1 (en) | 2010-04-02 | 2010-04-02 | PNEUMATIC SPRAYER |
Publications (2)
Publication Number | Publication Date |
---|---|
ITBO20100204A1 true ITBO20100204A1 (en) | 2011-10-03 |
IT1399134B1 IT1399134B1 (en) | 2013-04-05 |
Family
ID=43034548
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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ITBO2010A000204A IT1399134B1 (en) | 2010-04-02 | 2010-04-02 | PNEUMATIC SPRAYER |
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IT (1) | IT1399134B1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0079815A2 (en) * | 1981-11-12 | 1983-05-25 | Tecnoma | Rotating valve, especially for a mobile spray installation of a plant-treating liquid |
WO1998006257A1 (en) * | 1996-08-02 | 1998-02-19 | Hedegaard Albert | Method and sprayer boom for spraying a field crop with a plant protective liquid |
EP0889266A2 (en) * | 1997-06-30 | 1999-01-07 | Amazonen-Werke H. Dreyer GmbH & Co. KG | Switch valve |
WO2001064351A2 (en) * | 2000-02-29 | 2001-09-07 | Spraying Systems Co. | Valve controlled spraying system |
FR2850884A1 (en) * | 2003-02-10 | 2004-08-13 | Blanchard Sas | Spraying device used in agricultural field, has supply pipe connected to a return pipe which directs a flow of liquid through outlets such that position of each outlet valve is controlled by pressure in the return pipe |
-
2010
- 2010-04-02 IT ITBO2010A000204A patent/IT1399134B1/en active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0079815A2 (en) * | 1981-11-12 | 1983-05-25 | Tecnoma | Rotating valve, especially for a mobile spray installation of a plant-treating liquid |
WO1998006257A1 (en) * | 1996-08-02 | 1998-02-19 | Hedegaard Albert | Method and sprayer boom for spraying a field crop with a plant protective liquid |
EP0889266A2 (en) * | 1997-06-30 | 1999-01-07 | Amazonen-Werke H. Dreyer GmbH & Co. KG | Switch valve |
WO2001064351A2 (en) * | 2000-02-29 | 2001-09-07 | Spraying Systems Co. | Valve controlled spraying system |
FR2850884A1 (en) * | 2003-02-10 | 2004-08-13 | Blanchard Sas | Spraying device used in agricultural field, has supply pipe connected to a return pipe which directs a flow of liquid through outlets such that position of each outlet valve is controlled by pressure in the return pipe |
Also Published As
Publication number | Publication date |
---|---|
IT1399134B1 (en) | 2013-04-05 |
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