EP0287552A2 - Dispositif de pulvérisation d'un fluide - Google Patents

Dispositif de pulvérisation d'un fluide Download PDF

Info

Publication number
EP0287552A2
EP0287552A2 EP88890086A EP88890086A EP0287552A2 EP 0287552 A2 EP0287552 A2 EP 0287552A2 EP 88890086 A EP88890086 A EP 88890086A EP 88890086 A EP88890086 A EP 88890086A EP 0287552 A2 EP0287552 A2 EP 0287552A2
Authority
EP
European Patent Office
Prior art keywords
spraying
electrodes
electrode
nozzle
electrode carrier
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
EP88890086A
Other languages
German (de)
English (en)
Other versions
EP0287552A3 (en
EP0287552B1 (fr
Inventor
Josef Thurmaier
Michael Dr. Dipl.-Ing. Muhr
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.)
Ferdinand Krobath Maschinenfabrik Te Feldbach Oos
Original Assignee
Ascher GmbH
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.)
Filing date
Publication date
Application filed by Ascher GmbH filed Critical Ascher GmbH
Publication of EP0287552A2 publication Critical patent/EP0287552A2/fr
Publication of EP0287552A3 publication Critical patent/EP0287552A3/de
Application granted granted Critical
Publication of EP0287552B1 publication Critical patent/EP0287552B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/08—Plant for applying liquids or other fluent materials to objects
    • B05B5/085—Plant for applying liquids or other fluent materials to objects the plant being provided on a vehicle

Definitions

  • the invention relates to a device for spraying spraying agent with a spraying device supported on or pulled by a towing vehicle, wherein the spraying device has at least one spray nozzle which is fed with spraying agent via a pump, in which the distance from or to the nozzle mouth ( en) electrodes for the electrostatic charging of the spray are arranged.
  • Spraying devices for agricultural purposes can be pulled by a towing vehicle or, for example, can be attached to the three-point suspension of an agricultural towing vehicle, such as a tractor.
  • the spraying agent is hereby discharged from a spraying agent container by means of a pump via spraying nozzles, whereby the spraying nozzles can for example be oriented transversely to the direction of travel and in some of these spraying devices blowers can also be provided which generate a carrier air flow for the spraying agent released by the nozzles.
  • a device of this type can be found, for example, in European patent application 167 518. Spraying devices of this type produce a spray mist, depending on the type and cultivation of the plants to be sprayed, a more or less large proportion of the spray liquid becomes ineffective for spraying purposes or is lost as a drift for use.
  • the device according to the invention is essentially characterized in that the electrodes are fixed to an insulated electrode carrier separate from the nozzle carrier, the electrode carrier being supported in an insulating manner on the housing and / or on the container.
  • the fact that separate insulated electrode supports are provided for the electrodes and thus the electrodes are not directly connected to the nozzles or nozzle supports ensures that no significant leakage currents flow between the nozzle mouth and electrodes even in the oversaturated fog phase.
  • the design of the insulation is of particular importance in order to achieve a functional device in which the desired electrostatic charging is possible.
  • the arrangement of the electrodes on the electrode holder, which is separate from the nozzle holder and insulated from it, means that there is no need for complex suction devices on the electrodes, as a result of which they can be constructed much more simply.
  • the insulation and support of the electrode carrier on the housing and / or container of the spraying device can be done with simple means.
  • spray agent Since the spray agent is electrostatically charged when or after it emerges from the spray nozzles, it is attracted to the target areas at ground potential and a large part of the drifting spray agent can be directed directly at the plants or the target areas.
  • spray medium also reaches the leaves from the underside or the shadow of the spray shadow, so that a much larger proportion of the sprayed liquid is accepted by the plants not only on the top but also on the underside, which means particularly effective protection or effective treatment is made possible and, above all, untreated nests are avoided.
  • the spray can be negatively charged, which can be done by corona, contact or influenza charging.
  • the device according to the invention is further developed such that a positive voltage of 10 to 15 kV, in particular 12 kV, is (are) applied to the electrode (s), the electrodes being advantageously displaceable relative to the nozzles for better adjustment of the electrodes are arranged on the electrode carrier.
  • brushes or comb-shaped electrodes can be used as electrodes, the electrodes preferably being of annular design.
  • Such annular electrodes can be arranged in a particularly simple manner in accordance with the nozzle mouth, in particular coaxially to the nozzle mouths, so that an effective electrostatic charging of the jet leaving the spray nozzles is ensured.
  • each ring-shaped electrode is advantageously formed with an inner surface which is conical in accordance with the spray cone of the spray nozzle.
  • the design is advantageously made such that the insulators, via which the electrode carrier is connected or supported on the housing and / or container and / or the electrodes on the electrode carrier, with pots with a downward opening are disguised.
  • the cup-shaped cladding drains the precipitated water without it coming into direct contact with the surface of the insulators.
  • the arrangement of these pot-shaped linings thus protects the insulator against the separation of spray droplets, these linings formed by pots preferably being able to be connected to earth potential, as a result of which the insulator can be further secured against the precipitation of droplets of moisture.
  • the electrode carrier is arranged below the insulators and / or suspended from them.
  • An electrical field is formed between the linings of the insulators and the insulators and the electrode carrier, which are preferably at ground potential, as a result of which a force is exerted on charged particles which are located on the electrode carrier in the direction of the pot-shaped lining or the insulator. Due to the fact that the electrode carrier is arranged below the insulators and / or hanging from them, gravity acts on the particles on the electrode carrier against the direction of the electric field, as a result of which the transfer of a charged particle from the electrode carrier to the cup-shaped cladding and thus a corresponding outflow the load is largely avoided. It is thus ensured that no leakage current can flow from the electrode carrier via the insulators.
  • the electrode carrier is advantageously connected to the housing and / or the container via the insulators with the interposition of an insulating carrier frame.
  • an insulating carrier frame makes it possible, on the one hand, to ensure the static stability of the electrode support, and, on the other hand, to bring the insulators out of the mist area of the spray nozzles and the electrode support.
  • an insulating support frame makes it possible to gradually reduce the voltage prevailing between the electrode support and the insulator linings, which are preferably at ground potential, so that the support frame has a potential which lies between the potential of the electrode support and ground potential.
  • FIG. 1 shows a circuit diagram for the electrostatic charging of the spraying agent when or after it emerges from the spray nozzles
  • FIG. 2 shows, in an enlarged view, a diagram for the charge separation during influential charging
  • FIG. 3 shows a partial view of an electrode carrier supported on a housing
  • Figure 4 is a view in the direction of arrow IV of Figure 3.
  • a nozzle designated 1 is acted upon by a pump 3 with spray medium from a reservoir 4 via a pressure regulator 2.
  • An electrode 5 is arranged concentrically with the nozzle 1 and is supplied with a voltage of, for example, 12 kV via a high-voltage device 6, which is fed, for example, from a battery 7 of the towing vehicle.
  • the towing vehicle and the sprayer with the nozzle 1 are at ground potential, as is indicated by an earth band 8 on the sprayer.
  • the spray medium emerging from the nozzle 1 is electrostatically charged when or after it exits when it passes through the electrode 5.
  • an electrode carrier 10 is connected via insulators 11 with the interposition of an insulating support frame 12 to a housing of a spraying device, not shown.
  • the insulators have pot-shaped linings 13 with an opening directed downwards.
  • the insulators 11 and the cup-shaped linings 13 are supported at 14 on a frame element 15 which is connected to the housing of the spraying device.
  • the electrode carrier 10 has an electrode at the points labeled 16, which cooperate with nozzles 17 of a spray agent supply line 18, which is only indicated schematically and which is supported independently of the carrier frame 12 and the electrode carrier 10 on the housing of the spraying device or on the container.
  • FIG. 3 A detail of FIG. 3 is shown enlarged in FIG. 4, the reference symbols being retained.
  • the support frame 12 is angled at the connection 19 with the electrode support 10, which makes it possible to bring the insulator out of the fog area of the spray.
  • the spraying agent is fed to a nozzle 17 via the line indicated by 18, an annular electrode 16 being provided coaxially with the nozzle 17.
  • the electrode 16 has an inner surface which is conical in accordance with the spray cone of the spray nozzle 17.
  • the pot-shaped coverings In the area of the support frame 12, the pot-shaped coverings have baffles 20 on their lower edge, which prevent liquid collected on the surface of the cover from dripping onto the support frame 12 underneath.
  • the electrodes 16 can be slidably fixed on the electrode carrier 10 in the sense of the double arrow 21, as a result of which a better adaptation and adjustment of the electrodes can be achieved.

Landscapes

  • Electrostatic Spraying Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP19880890086 1987-04-09 1988-04-07 Dispositif de pulvérisation d'un fluide Expired - Lifetime EP0287552B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT88687A AT395505B (de) 1987-04-09 1987-04-09 Vorrichtung zum verspruehen von spritzmitteln
AT886/87 1987-04-09

Publications (3)

Publication Number Publication Date
EP0287552A2 true EP0287552A2 (fr) 1988-10-19
EP0287552A3 EP0287552A3 (en) 1990-03-07
EP0287552B1 EP0287552B1 (fr) 1992-10-21

Family

ID=3502085

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880890086 Expired - Lifetime EP0287552B1 (fr) 1987-04-09 1988-04-07 Dispositif de pulvérisation d'un fluide

Country Status (3)

Country Link
EP (1) EP0287552B1 (fr)
AT (1) AT395505B (fr)
DE (1) DE3875366D1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2260366A (en) * 1991-10-09 1993-04-14 Susan Margaret Mills I.c. engine piston valve gear
ITBO20080653A1 (it) * 2008-10-23 2010-04-24 Nobili S P A Apparecchiatura di irrorazione, procedimento e dispositivo di verifica.
GR20180100205A (el) * 2018-05-14 2020-01-22 Τρυφων Γεωργιος Φαρμουζης Συστημα ανορθωτη και φορτιζομενης με συνεχες ρευμα ανοξειδωτης στεφανης με οδοντωτη μορφη τοποθετημενης με μονωτηρες στην πλατη νεφελοψεκαστηρα για εφαρμογη ηλεκτροστατικου ψεκασμου
US12110646B2 (en) 2016-09-16 2024-10-08 Zasso Gmbh Device for destroying plants
US20240424506A1 (en) * 2023-06-22 2024-12-26 Raven Industries, Inc. Electrostatic spraying system and methods for same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103551288A (zh) * 2013-10-22 2014-02-05 杭州冯氏彩钢板有限公司 横向高压静电棒彩钢板涂塑装备
KR20160122446A (ko) * 2015-04-14 2016-10-24 김장환 원거리 정전 살포 장치

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD126675A5 (fr) * 1975-06-19 1977-08-03
HU175744B (hu) * 1976-11-09 1980-10-28 Hajtomuevek Es Festoberendeze Ustrojstvo dlja ehlektrostaticheskogo kraskoraspylenija s uluchshennym koehfficientom poleznogo dejstvija pri raspylenii krasok, razbavljaemykh vodoj
CH622444A5 (fr) * 1977-04-04 1981-04-15 Gruenenfelder H Eltex Elektron
US4489894A (en) * 1981-02-27 1984-12-25 National Research Development Corporation Inductively charged spraying apparatus
AT385393B (de) * 1984-07-04 1988-03-25 Krobath Maschf Ferd Spritzgeraet, insbesondere fuer landwirtschaftliche zwecke
DE3429075A1 (de) * 1984-08-07 1986-02-20 Hermann Behr & Sohn Gmbh & Co, 7121 Ingersheim Vorrichtung zum elektrostatischen beschichten von gegenstaenden

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2260366A (en) * 1991-10-09 1993-04-14 Susan Margaret Mills I.c. engine piston valve gear
ITBO20080653A1 (it) * 2008-10-23 2010-04-24 Nobili S P A Apparecchiatura di irrorazione, procedimento e dispositivo di verifica.
US12110646B2 (en) 2016-09-16 2024-10-08 Zasso Gmbh Device for destroying plants
GR20180100205A (el) * 2018-05-14 2020-01-22 Τρυφων Γεωργιος Φαρμουζης Συστημα ανορθωτη και φορτιζομενης με συνεχες ρευμα ανοξειδωτης στεφανης με οδοντωτη μορφη τοποθετημενης με μονωτηρες στην πλατη νεφελοψεκαστηρα για εφαρμογη ηλεκτροστατικου ψεκασμου
GR1009689B (el) * 2018-05-14 2020-01-24 Τρυφων Γεωργιος Φαρμουζης Συστημα ανορθωτη και φορτιζομενης με συνεχες ρευμα ανοξειδωτης στεφανης με οδοντωτη μορφη τοποθετημενης με μονωτηρες στην πλατη νεφελοψεκαστηρα για εφαρμογη ηλεκτροστατικου ψεκασμου
US20240424506A1 (en) * 2023-06-22 2024-12-26 Raven Industries, Inc. Electrostatic spraying system and methods for same

Also Published As

Publication number Publication date
EP0287552A3 (en) 1990-03-07
ATA88687A (de) 1992-06-15
EP0287552B1 (fr) 1992-10-21
DE3875366D1 (de) 1992-11-26
AT395505B (de) 1993-01-25

Similar Documents

Publication Publication Date Title
DE2731712C2 (de) Tragbares Zerstäubungsgerät
DE2937879C2 (fr)
DE2630555A1 (de) Vorrichtung und verfahren zum elektrostatischen spruehen
DE2707218C3 (de) Elektrostatische Farbspritzvorrichtung
DD255482A5 (de) Vorrichtung zum elektrostatischen beschichten von gegenstaenden
DE2915039A1 (de) Verfahren und vorrichtung zum elektrostatischen zerstaeuben von fluessigkeiten
DE3319995A1 (de) Elektrostatisches spritzgeraet
US4560107A (en) Aerial spraying apparatus
DE4105116A1 (de) Vorrichtung und verfahren zum elektrostatischen beschichten von gegenstaenden
EP0287552B1 (fr) Dispositif de pulvérisation d'un fluide
DE3203729C2 (fr)
EP0134951B1 (fr) Procédé et dispositif pour dispenser et répandre sur grandes surfaces des liquides électriquement conducteurs
DE3110757A1 (de) Vorrichtung zum elektrostatischen zerstaeuben von fluessigkeiten
DE3707547A1 (de) Verfahren und vorrichtung zum verspritzen von pflanzenschutzmittelloesungen oder -dispersionen
DE2514117A1 (de) Vorrichtung zum elektrostatischen aufspruehen von ueberzugsmassen
DE2159909A1 (de) Verfahren und Luftfahrzeug zum Versprühen von landwirtschaftlichen Nutzstoffen
EP0171042A1 (fr) Dispositif pour l'enduction électrostatique d'articles
DE3827062C2 (fr)
AT234878B (de) Verfahren zum elektrostatischen Zerstäuben von Flüssigkeiten
DE2951531A1 (de) Einrichtung zur steuerung des elektrischen feldes von elektrostatischen lackzerstaeubern
DE1156341B (de) Elektrostatische Auftragsvorrichtung
DD229046A1 (de) Verfahren und vorrichtung zur applikation von pflanzenschutzmitteln
NZ204894A (en) Electrostatic spraying apparatus: sprays of opposite charge produced
DE3644849A1 (de) Elektrostatische sprueheinrichtung fuer beschichtungspulver
DE3509387A1 (de) Kontaktaufladung mittels rotationszerstaeuber

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): CH DE FR GB IT LI NL

ITCL It: translation for ep claims filed

Representative=s name: SAIC BREVETTI S.R.L.

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): CH DE FR GB IT LI NL

17P Request for examination filed

Effective date: 19900814

17Q First examination report despatched

Effective date: 19910903

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ASCHER GESELLSCHAFT M.B.H.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI NL

REF Corresponds to:

Ref document number: 3875366

Country of ref document: DE

Date of ref document: 19921126

ITF It: translation for a ep patent filed
ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19930115

REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: FERDINAND KROBATH MASCHINENFABRIK

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19930325

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19930330

Year of fee payment: 6

ITPR It: changes in ownership of a european patent

Owner name: CESSIONE;FERDINAND KROBATH MASCHINENFABRIK

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19930430

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19930625

Year of fee payment: 6

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
NLS Nl: assignments of ep-patents

Owner name: FERDINAND KROBATH MASCHINENFABRIK TE FELDBACH, OOS

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19940407

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19940430

Ref country code: CH

Effective date: 19940430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19941101

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19940407

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19941229

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20000621

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050407