USH1691H - Apparatus for applying a pesticide spray - Google Patents

Apparatus for applying a pesticide spray Download PDF

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Publication number
USH1691H
USH1691H US08/609,863 US60986396A USH1691H US H1691 H USH1691 H US H1691H US 60986396 A US60986396 A US 60986396A US H1691 H USH1691 H US H1691H
Authority
US
United States
Prior art keywords
spray
compressed air
solution
nozzle
source
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.)
Abandoned
Application number
US08/609,863
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English (en)
Inventor
Tateo Ono
Susumu Miyashita
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US08/609,863 priority Critical patent/USH1691H/en
Application granted granted Critical
Publication of USH1691H publication Critical patent/USH1691H/en
Abandoned legal-status Critical Current

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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
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/043—Discharge apparatus, e.g. electrostatic spray guns using induction-charging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/20—Arrangements for agitating the material to be sprayed, e.g. for stirring, mixing or homogenising
    • 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
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/053—Arrangements for supplying power, e.g. charging power
    • B05B5/0533—Electrodes specially adapted therefor; Arrangements of electrodes
    • 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
    • B05B5/16—Arrangements for supplying liquids or other fluent material
    • B05B5/1691—Apparatus to be carried on or by a person or with a container fixed to the discharge device
    • 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
    • B05B7/2424—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 the carried liquid and the main stream of atomising fluid being brought together downstream of the container before discharge
    • B05B7/2427—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 the carried liquid and the main stream of atomising fluid being brought together downstream of the container before discharge and a secondary stream of atomising fluid being brought together in the container or putting the carried liquid under pressure in the container

Definitions

  • This invention relates to a method of pesticide application, particularly to the application of pesticides which are effective to control pests in a greenhouse.
  • the efficacy of the pesticide is greatly improved if a highly concentrated spray solution in very low volume is applied in the form of particulates and the particulates fill the interior of the greenhouse.
  • pesticides registered in Japan for use in the application of the method described in this invention are all fungicides except for only one insecticide. This reflects in part the belief that the insecticide can achieve a desired efficacy against insects and pests even when it is not deposited on the back surface of leaves of growing plants. In case of fungicide, on the other hand, sufficient control of diseases, infecting the back surface of leaves, cannot be anticipated unless the fungicide is deposited on the back surface leaves.
  • the electrostatic application method provides an electrostatic charge to the particles of spray solution as aforementioned so that the particles will be attracted and then deposited onto the growing plants including depositing of the particles on the back surface of leaves.
  • the ordinary electrostatic application method gives an electrostatic charge to the particles of the spray solution by applying high voltage from 2 KV to 10 KV or greater, it does not provide a sufficient deposition efficiency onto the growing plants but has, in fact, a high risk of electric shock.
  • the object of the present invention is to provide a method which is superior and more economical in the deposition efficient of a pesticide spray solution onto growing plants.
  • the present invention provides an improved method for electrostatically charging particles of the spray solution by applying voltage of 300 to 800 V thereto and then to spray them.
  • the present invention provides a spray equipment which generates particles of spray solution in a range of 10 to 20 microns.
  • One or more spray units are placed inside the greenhouse according to the size of the greenhouse.
  • the electrostatic charge is given to the particles exiting from the spray nozzle of the equipment by applying a voltage of 300 to 800 V and then the particles are sprayed inside the greenhouse.
  • the sprayed particles float in air and are dispersed in the atmosphere of greenhouse by natural air conversion occurred after sunset or by forced air conversion. Then they will fall and deposit uniformly and efficiently on the entire surface, including the back surface of the leaves of growing plants.
  • the value of the voltage applied to the particles of the spray solution to provide the electrostatic charge was obtained from the results of various experiments repeatedly carried out by placing the droplet detection paper on growing plants. This indicates that the deposition of particles on the back surface of leaves is unsatisfactory when the voltage applied is less than 300 V. On the other hand, uniform spray and floating effect cannot be obtained when the voltage applied is great than 800 V.
  • FIG. 1 is a vertical sectional view showing an embodiment of spray equipment used for the implementation of the present invention.
  • FIG. 2 is a top view of a compressed air supply part of the equipment shown in FIG. 1.
  • FIG. 3 is a vertical section showing an embodiment of spray nozzle.
  • FIG. 1 shows a small size spray unit, which is easy to carry but actually used at fixed position which is different type spray equipment from the ordinary one.
  • the numeral 1 is around bottom solution tank designed to maximize the mixing effect by conversion
  • 2 is an air assisted liquid spray nozzle arranged so as to extend outside of a tank cover 3 closing the upper part of the solution tank 1.
  • a compressed air supply 4 is mounted on the same tank cover 3 opposite the spray nozzle 2.
  • These parts are arranged as to supply compressed air at the predetermined pressure and flow rate into the solution tank 1 to eject the spray through the nozzle 2 via the compressed air supply 4 so that pesticide solution 5 in the solution tank 1 is sucked by the air flow inside the solution tank 1 and sprayed from the spray nozzle 2 in a form of mist of the particles into the atmosphere of the greenhouse together with compressed air.
  • the lower bottom part 6 of the solution tank 1 is constructed in a round shape in order to provide better mixing effect and to minimize any residual solution in the tank.
  • a stationary supporting housing 7 is provided outside and surrounding the round lower bottom part 6.
  • Mounted near the lowest position of the round lower bottom part 6 is a manifold provided with radical air outlets 8 pointed in the radial direction, through which a part of compressed air is discharged for mixing and compressing the pesticide solution 5 in the tank 1.
  • the manifold is further provided at its tip with an inlet 9 for introduction of the pesticide solution 5 from the tank 1.
  • a strainer 33 covers the inlet 9.
  • An inner cover 10 is provided on the top of the solution tank 1 so as to hermetically seal the tank.
  • a compressed air supply conduit 11 by which compressed air for mixing and compressing the pesticide solution 5 is fed to the outlets 8 and a pesticide solution supply conduit 12 communicating with inlet 9.
  • the conduits 11 and 12 are provided as a double tubing structure in which the pesticide solution supply conduit 12 comprises a tube 14 concentrically mounted within an outer tube 13 so that the space defined between the two tubes forms the conduit 11.
  • the top of the compressed air supply path 11 is connected to the compressed air supply 4 through a compressed air supply tube 15, a branch connection 16, a first bypass tube 17 and a flow control valve 18.
  • the top of the pesticide solution supply path 12 is connected to the discharge hole (not shown in the drawing) of the spray nozzle 2 through a solution delivery tube 19.
  • the compressed air supply 4 is connected to a slit (not shown in the drawing) in the spray nozzle 2 through the compressed air supply tube 15, the branch connection 16 and a second bypass tube 20.
  • FIG. 2 is a top view showing one embodiment of a compressed air supply and its attachments.
  • the numeral 21 denotes a compressed air supply cock, 22 a pressure regulator, and 23 a pressure gauge.
  • FIG. 3 shows an embodiment of apparatus for applying an electrostatic charge to the particles of the spray solution as sprayed from the spray nozzle 2.
  • This apparatus comprises a cap 31 formed of an antistatic material and, in which is embedded a brass ring 25.
  • the cap 31 is screwed onto the tip of the main body 24 of the spray nozzle 2 so that the distance between it and the main body 24 is adjustable.
  • the brass ring 25 is connected to a lead wire 26 through a screw 30 so that the predetermined voltage in the range 300 to 800 V may be applied from the direct voltage source 34 (FIG. 1).
  • a hand carrying grip 27, a stopper 28 by which the cover 3 is fixed, and a stop cock 32 to interrupt the delivery of spray solution 5 are provided on the tank cover 3.
  • a compressed air tube 29, connected to a compressor (not shown in the drawing) provides compressed air to the compressed air supply 4.
  • compressed air supply cock 21 When the compressed air supply cock 21 is opened, compressed air at the predetermined pressure is supplied through the pressure regulator 22 to the branch connection 16 from the compressed air supply tube 15. Then most of the compressed air is supplied to the air discharge slit of the spray nozzle 2 through the second bypass tube 20.
  • the remaining portion of the compressed air is delivered to the compressed air outlet 8 through the branch connection 16, the first bypass tube 17, the flow control valve 18 and the compressed air supply path 11 so as to be supplied into the pesticide solution 5.
  • Compressed air thus supplied forms bubbles which causes the pesticide solution 5 to be mixed, preventing precipitation of pesticide.
  • the bubbles are also retained in the space between the surface of the pesticide solution 5, forcing delivery of the pesticide solution 5 to the spray nozzle 2.
  • the deposition efficiency of pesticide solution on growing plants is improved.
  • the spray equipment can be used placing it at any selected position in the greenhouse; therefore, it does not need installation with automatic travel system of the spray nozzle or the equipment itself.
  • the equipment can be used at lower voltage. Therefore, the present invention provides the pesticide spray equipment safer in use and more economical.

Landscapes

  • Catching Or Destruction (AREA)
  • Special Spraying Apparatus (AREA)
  • Electrostatic Spraying Apparatus (AREA)
US08/609,863 1992-09-14 1996-03-04 Apparatus for applying a pesticide spray Abandoned USH1691H (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US08/609,863 USH1691H (en) 1992-09-14 1996-03-04 Apparatus for applying a pesticide spray

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP4-271178 1992-09-14
JP27117892A JP3208190B2 (ja) 1992-09-14 1992-09-14 薬液の煙霧防除方法
US12068293A 1993-09-13 1993-09-13
US37605995A 1995-01-20 1995-01-20
US08/609,863 USH1691H (en) 1992-09-14 1996-03-04 Apparatus for applying a pesticide spray

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US37605995A Continuation 1992-09-14 1995-01-20

Publications (1)

Publication Number Publication Date
USH1691H true USH1691H (en) 1997-11-04

Family

ID=17496435

Family Applications (1)

Application Number Title Priority Date Filing Date
US08/609,863 Abandoned USH1691H (en) 1992-09-14 1996-03-04 Apparatus for applying a pesticide spray

Country Status (2)

Country Link
US (1) USH1691H (ja)
JP (1) JP3208190B2 (ja)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1216758A1 (en) * 2000-11-17 2002-06-26 McLaws, Brent D. Identifier label application system
US6574085B1 (en) 1999-09-16 2003-06-03 Oppama Industry Co., Ltd. Power supply apparatus for electrostatic charging and method for same
US6752297B1 (en) * 2003-03-05 2004-06-22 Kenneth William Ische Waste reducing dispensing container
US20050098656A1 (en) * 2003-10-30 2005-05-12 Saint-Gobain Calmar Inc. Hose-end sprayer assembly
US20060091237A1 (en) * 2004-10-28 2006-05-04 Dodd Joseph K Liquid sprayer assembly
US20060097073A1 (en) * 2004-10-28 2006-05-11 Dodd Joseph K Hose-end sprayer assembly
US7296761B1 (en) * 2005-05-19 2007-11-20 Rodney Laible Hand-held dispenser

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101462622B1 (ko) * 2014-09-04 2014-11-21 김연수 안개식 약제 살포장치
JP6718627B2 (ja) 2015-11-10 2020-07-08 株式会社いけうち 植物栽培室の防除装置

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US835408A (en) * 1904-03-02 1906-11-06 Elcharles Arthur De Vore Sprayer.
US2784350A (en) * 1955-04-04 1957-03-05 Sedlacsik John Paint spray apparatus, including insulated supply pipe
US3550854A (en) * 1967-12-21 1970-12-29 Harry C Fischer Ultra-low volume spraying apparatus and systems for insecticides and the like
SU749440A1 (ru) * 1978-05-03 1980-07-23 Ордена Красной Звезды Автобаза Министерства Обороны Ссср Установка дл нанесени антикоррозийных покрытий
US4437614A (en) * 1982-09-28 1984-03-20 Binks Manufacturing Company Electrostatic air atomization spray coating system
US4621268A (en) * 1984-02-08 1986-11-04 Keeling Michael R Fluid application method and apparatus
US4664315A (en) * 1986-01-15 1987-05-12 Parker Hannifin Corporation Electrostatic spray nozzle
US4673132A (en) * 1979-01-22 1987-06-16 Canadian Patents And Development Limited Spraying apparatus
GB2192351A (en) * 1986-07-07 1988-01-13 Nat Res Dev Electrostatic sprayer
US4762274A (en) * 1985-11-13 1988-08-09 Parker-Hannifin Corporation Inductor nozzle assembly for crop sprayers
GB2222966A (en) * 1988-07-15 1990-03-28 Nat Res Dev Electrostatic spraying.

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US835408A (en) * 1904-03-02 1906-11-06 Elcharles Arthur De Vore Sprayer.
US2784350A (en) * 1955-04-04 1957-03-05 Sedlacsik John Paint spray apparatus, including insulated supply pipe
US3550854A (en) * 1967-12-21 1970-12-29 Harry C Fischer Ultra-low volume spraying apparatus and systems for insecticides and the like
SU749440A1 (ru) * 1978-05-03 1980-07-23 Ордена Красной Звезды Автобаза Министерства Обороны Ссср Установка дл нанесени антикоррозийных покрытий
US4673132A (en) * 1979-01-22 1987-06-16 Canadian Patents And Development Limited Spraying apparatus
US4437614A (en) * 1982-09-28 1984-03-20 Binks Manufacturing Company Electrostatic air atomization spray coating system
US4621268A (en) * 1984-02-08 1986-11-04 Keeling Michael R Fluid application method and apparatus
US4762274A (en) * 1985-11-13 1988-08-09 Parker-Hannifin Corporation Inductor nozzle assembly for crop sprayers
US4664315A (en) * 1986-01-15 1987-05-12 Parker Hannifin Corporation Electrostatic spray nozzle
GB2192351A (en) * 1986-07-07 1988-01-13 Nat Res Dev Electrostatic sprayer
GB2222966A (en) * 1988-07-15 1990-03-28 Nat Res Dev Electrostatic spraying.

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6574085B1 (en) 1999-09-16 2003-06-03 Oppama Industry Co., Ltd. Power supply apparatus for electrostatic charging and method for same
EP1216758A1 (en) * 2000-11-17 2002-06-26 McLaws, Brent D. Identifier label application system
US6752297B1 (en) * 2003-03-05 2004-06-22 Kenneth William Ische Waste reducing dispensing container
US20050098656A1 (en) * 2003-10-30 2005-05-12 Saint-Gobain Calmar Inc. Hose-end sprayer assembly
US7118049B2 (en) * 2003-10-30 2006-10-10 Meadwestvaco Corporation Hose-end sprayer assembly
US20060091237A1 (en) * 2004-10-28 2006-05-04 Dodd Joseph K Liquid sprayer assembly
US20060097073A1 (en) * 2004-10-28 2006-05-11 Dodd Joseph K Hose-end sprayer assembly
US7188786B2 (en) * 2004-10-28 2007-03-13 Meadwestvaco Corporation Hose-end sprayer assembly
US7407117B2 (en) * 2004-10-28 2008-08-05 Meadwestvaco Calmar, Inc. Liquid sprayer assembly
US7513442B2 (en) 2004-10-28 2009-04-07 Meadwestvaco Calmar, Inc. Hose-end sprayer assembly
US7296761B1 (en) * 2005-05-19 2007-11-20 Rodney Laible Hand-held dispenser
US20070267519A1 (en) * 2005-05-19 2007-11-22 Rodney Laible Hand-held dispenser

Also Published As

Publication number Publication date
JP3208190B2 (ja) 2001-09-10
JPH0690647A (ja) 1994-04-05

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