WO2019174933A1 - Landwirtschaftliche spritzvorrichtung - Google Patents
Landwirtschaftliche spritzvorrichtung Download PDFInfo
- Publication number
- WO2019174933A1 WO2019174933A1 PCT/EP2019/055152 EP2019055152W WO2019174933A1 WO 2019174933 A1 WO2019174933 A1 WO 2019174933A1 EP 2019055152 W EP2019055152 W EP 2019055152W WO 2019174933 A1 WO2019174933 A1 WO 2019174933A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- spray
- liquid
- unit
- agricultural
- Prior art date
Links
Classifications
-
- 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
Definitions
- the invention relates to an agricultural spray device for dispensing a spray liquid, comprising at least one spray nozzle unit with at least one spray nozzle for spraying the spray liquid and at least two supply lines, by means of which the spray liquid from a tank and / or liquid to be mixed from the spray liquid to a tank in the Spray nozzle unit is conductive, each of the feed lines is preceded by a conveyor unit for conveying the respective liquid.
- the invention relates to a use of pressure reducing valves in an agricultural spray device.
- the spray mixture consisting of pesticides (combination of active ingredients and formulation materials), hereinafter referred to briefly as PSM, and a carrier liquid (TF) via nozzles in the form of a spray applied to the field.
- PSM pesticides
- TF carrier liquid
- the spray mixture is premixed before the actual application in a central reservoir and conveyed by means of a conveyor to the individual spray nozzles.
- the set pressure influences in addition to the spray characteristic, e.g. the droplet size distribution and the volume flow flowing through a nozzle. So in the course of the injection process (also called application) a
- Preset spray volume flow per area through a nozzle a consistent, defined droplet spectrum can be applied, it is necessary to keep the pressure of the spray mixture as constant as possible or to adapt it accordingly.
- the volume flow to be dispensed varies and rapid control of the spray-bottle pressure is required:
- the volume flow through the nozzles must be adjusted by means of a pressure regulation in order to ensure a constant amount of PSM or spray mixture per surface.
- the volumetric flow to be delivered changes depending on the local requirements. For all operating conditions, it is necessary that the pressure of the spray mixture is adjusted to the required value.
- control systems used today regulate the pressure typically for the entire sprayer or at least for a large proportion of nozzles via individual pressure control valves.
- a parallel spray liquid hydraulics the individual sections are connected in parallel via fluid-carrying lines with a pressure control device.
- a serial spray liquor hydraulics is also known.
- several sections are typically supplied with spray mixture via a common feed line.
- Working width is disadvantageous. With regard to a reduced residual quantity and a reduced weight, it is advantageous to reduce the volume of the fluid-carrying lines.
- the still unpublished DE 10 2017 220 028 discloses a spraying device with conveying units for conveying liquid into a mixing valve for
- each of the feed lines is assigned in each case, ie a separate or separate pressure-reducing valve, in order to set the delivery pressure of the respective liquid into the injection nozzle unit.
- a separate or separate pressure-reducing valve in order to set the delivery pressure of the respective liquid into the injection nozzle unit.
- pressure reducing valves in an agricultural spray device to a discharge pressure of a
- opening pressures of the pressure reducing valves are adjustable by means of a control unit of the agricultural spray device to the same value to provide constant discharge pressures.
- the agricultural spray device may in particular be part of an agricultural field sprayer or a plant protection device or be designed as an agricultural field sprayer or a plant protection device.
- the spraying device can be arranged and / or arranged on or on a mobile unit.
- the mobile unit may be designed as a land vehicle and / or aircraft and / or trailers.
- the mobile unit may in particular be an agricultural work machine, for example a
- Tractor a tractor, a self-propelled or autonomous sprayer or a self-propelled or autonomous robot.
- the spray device may also be attached to a hydraulic device of the agricultural
- the spraying device is constructed on a loading surface of the agricultural machine.
- the spray device may be attached to the agricultural machine.
- the spreading or spraying the spray liquid can be done on an agricultural area or an agricultural area.
- This can be understood as a field or a cultivated area for plants or even a plot of such a cultivated area.
- the agricultural area can thus be arable land, a grassland or a pasture.
- the plants may include, for example, crops whose fruit is used for agriculture (for example as food, feed or as an energy crop) as well as weeds, weeds and grass weeds.
- the plants can be part of the agricultural area.
- the spray liquid preferably has at least one active agent liquid.
- the spray liquid may also contain two or more active agent liquids exhibit.
- the Wirkmitellakekeit can a Spritzmitel, ie have a preparation or pesticide, in particular a pesticide concentrate.
- the active agent liquid may, for example, comprise a herbicide, fungicide or an insecticide (pesticide).
- the active agent liquid may also comprise a fertilizer, in particular a fertilizer concentrate.
- the active agent liquid can therefore a liquid fertilizer and / or a
- the spray liquid further preferably comprises a carrier liquid.
- a carrier liquid can be understood to mean a liquid which is designed to mix with the active agent liquid in order to enable or to improve the dispensing or dispensing of the active agent liquid, for example the crop protection agent or the fertilizer.
- the carrier liquid is preferably water.
- the spray liquid can be formed, for example, as: liquid, suspension, emulsion, solution or a combination thereof.
- Spray liquid is preferably formed as a water-diluted plant protection or water-diluted fertilizer.
- the spray liquid can be a spray mixture.
- the spray nozzle unit comprises at least two spray nozzles and / or at least two partial widths with spray nozzles.
- each injection nozzle and / or each part widths and / or a plurality of part widths can each be assigned or connected upstream of a separate or separate pressure reducing valve.
- the spray nozzle unit may have at least one mixing unit for mixing the liquids.
- the spray nozzle unit may also have only one spray nozzle.
- the spray nozzle unit further comprises a mixing unit for mixing the liquids.
- the pressure reducing valves are preferably each formed the same.
- Each pressure-reducing valve is preferably followed by an actuatable metering valve.
- the actuatable metering valves can each be designed the same. hereby This results in a high number of identical parts, which ensures easy installation and cost-effective provision of the spray device. In addition, this ensures that due to the same design of the valves, the valves each have the same flow resistance and also provide the same flow cross-sections available.
- the metering valves may be part of the mixing unit. That is, in other words, that the mixing unit has the metering valves. Accordingly, the mixing unit can be designed as a mixing valve. In this case, the metering valves can be fluidly connected to a mixing chamber of the mixing unit by means of the corresponding lines.
- the mixing unit is preferably arranged in the region of the spray nozzle.
- the mixing unit can thus be arranged as a final mixing unit in front of the spray nozzle.
- each spray nozzle is assigned a separate mixing unit. That is, in other words, that a mixing unit is arranged upstream of each spray nozzle.
- the supply lines of the spray device can at least a first
- Feed line for guiding or metering at least one carrier liquid and at least three second supply lines for the metering of three different, in particular pre-diluted detergent liquids include.
- the mixing chamber may have a static mixer or be designed as a static mixer. As a result, the mixing of the
- Active agent liquids already prediluted in order to increase the total discharge.
- Each feed line is preceded by a feed unit. This is not intended to mean that each feed line must be preceded by its own or separate feed unit. Rather, this means that several feed lines and a common feed unit can be connected upstream. It is important, however, that each supply line precedes a conveyor unit, whether together or alone is to provide the desired delivery pressure to the spray nozzle unit or to the respective metering valve. Thus, in each case one particular
- Feed unit upstream of the metering valves with a common supply line In particular, it is provided that the conveyor units are identical.
- the line may be formed as a fluidic connection line, for example.
- the line may be formed as a fluidic connection line, for example.
- the delivery unit is designed to convey or direct a liquid and / or a granulate under pressure, in particular to meter it. Accordingly, the delivery unit can, for example, in each case one / a / one or more pumps,
- Feed pumps, dosing pumps, accumulators, screw conveyors, valves, diaphragms etc. include.
- the inventive agricultural spray device it is now possible to perform a simple and cost-effective manner, a compensation of pressure fluctuations and pressure control or regulation almost independent of the set delivery pressure of the conveyor units in all supply lines of the spray nozzle unit.
- This is achieved in that each of the feed lines assigned to a pressure reducing valve or in each feed line a pressure reducing valve is arranged to adjust the delivery pressure of the respective liquid (almost independent of the set delivery pressure of the conveyor units) in the spray nozzle unit. Since pressure relief valves regulate the pressure on their output side, different pressure levels on the
- an opening pressure of the pressure reducing valves is adjustable in order to vary the delivery pressures. It is particularly advantageous if a control unit is provided which is designed to set the opening pressures of the pressure reducing valves to defined values and / or a defined value in order to provide at least one defined delivery pressure of the liquids.
- a control unit is provided which is designed to set the opening pressures of the pressure reducing valves to defined values and / or a defined value in order to provide at least one defined delivery pressure of the liquids.
- the different spray nozzles or different partial widths can be correspondingly activated with pressure reducing valves assigned to spray nozzles or different spray nozzle units in order to provide different delivery pressures to the spray nozzles or the partial widths or the spray nozzle units.
- the pressure reducing valves are pressure-controlled.
- the pressure reducing valves are designed such that the opening pressure of the pressure reducing valves is pressure-dependent adjustable.
- the control unit has at least one control pressure source, which is fluidically connectable and / or connected to the pressure reducing valves by means of at least one control pressure line in order to set the opening pressures to defined values and / or an equal value via at least one control pressure.
- the control pressure source which is fluidically connectable and / or connected to the pressure reducing valves by means of at least one control pressure line in order to set the opening pressures to defined values and / or an equal value via at least one control pressure.
- Control pressure line are fluidly connected.
- a control device for controlling and / or regulating the at least one control pressure of the at least one control pressure source can be provided.
- Control pressure line can be liquid or gaseous. It is advantageous to provide a plurality of control pressure lines with different control pressures to set different delivery pressures.
- the control unit may be configured to set the delivery pressure in each case in the control line differently, for example for individual partial widths, in order to individually specify the delivery pressure for each partial width. This makes it possible, when cornering the application rate to adapt to a part-width-specific adjustment of the control pressure and thus to achieve a nearly constant application rate per area.
- the opening pressures of Pressure-controlled pressure reducing valves very simple and inexpensive via a common control pressure line according to the control pressure simultaneously adjusted to the same pressure value or to the same pressure level or
- each inlet line in the mixing unit is associated with an actuatable valve. It is particularly advantageous if the control unit has a control device by means of which the valves are selectively actuated such that in a leading from the mixing unit to the spray nozzle drain line independent of the actuation of the valves or wiring of the supply lines, a constant flow of the
- Spray fluid results. This measure makes it possible to carry out a rapid and appropriate plant protection measure, it being ensured that the total application rate or the volume flow supplied to the at least one spray nozzle remains constant, independently of the number of added active substance liquids. This ensures optimum application of pesticides in a field.
- Show this 1 shows an agricultural spray device in one
- Figure 2 is a schematic detail view of a
- FIG. 3 is a schematic detail view of another
- Figure 4 is a schematic detail view of another
- FIG. 5 shows a schematic detail view of the mixing unit from FIG.
- FIG. 6 shows a schematic detail view of a pressure-reducing valve in the mixing unit according to FIG. 5.
- FIG. 1 shows, in a simplified representation, an agricultural one
- Spray device 10 which is arranged on a tractor 12 designed as a vehicle 12.
- the spray device 10 has a plurality of spray nozzles 14, wherein the spray nozzles 14 are arranged distributed over a cross member 16 side by side.
- the vehicle 12 pulls the cross member 16 and the spray nozzles 14 behind it, so that the spray nozzles 14 are above a bottom 18 to apply a spray liquid SF or a plant protection SF on the ground 18 and any plants located thereon.
- Vehicle 12 also carries a tank 20 in which the liquid
- Spray liquid SF is held.
- a Delivery unit 22 is provided, by means of which the spray liquid SF can be removed and the spray nozzles 14 can be fed.
- the spraying device 10 furthermore has a control device 24.
- FIG. 2 shows a simplified detail view of the injection device 10.
- the delivery unit 22 in this case has a pressure regulating device 26 with a
- the injection device 10 also has supply lines 28, 30, 32, by means of which the spray liquid SF from a tank 22 in part widths 34, 36, 38 with a plurality of spray nozzles 14 can be conducted.
- the sections 34-38 are part of a spray nozzle unit 40 or form a spray nozzle unit 40 from. All feed lines 28-32, the feed unit 22 for conveying the spray liquid SF in the spray nozzle unit 34 and the sections 34-38 of the spray nozzle unit 40 is connected upstream.
- each of the supply lines 28-32 is now one each, i. a separate or separate pressure reducing valve 42-46 assigned to the
- Spray nozzle unit 40 to adjust or pressure fluctuations in the
- the pressure reducing valves 42-46 are in this case designed such that their opening pressure in each case by means of a control unit 48 is adjustable.
- a control unit 48 is formed, the opening pressures of
- Pressure regulators 42-46 to adjust or regulate to the same value or the same pressure level.
- the pressure reducing valves 42-46 are used to adjust or regulate to the same value or the same pressure level.
- control unit 48 has a control pressure source 50 and a control pressure line 52, by means of which the control pressure source 50 is fluidly connected to the pressure reducing valves 42-46, so that the pressure reducing valves 42-46 on the control pressure of the control unit 48 and the control pressure source 50th to the same value or the same constant Pressure level can be adjusted or regulated.
- the control unit 48 further comprises the control device 24 for controlling the control pressure of
- Control pressure source 50
- Different control pressures can be acted upon or controlled to adjust to the sections 34-36 each different delivery pressures.
- FIG. 3 shows a simplified detailed view of a further embodiment of the spray device 10.
- the spray nozzles 14 of the spray nozzle unit 40 are not grouped into sections.
- each supply line 28-32 each have a pressure reducing valve 42, 43, 44, 45, 46 assigned.
- FIG. 4 shows a simplified detail view of a further embodiment of the spray device 10.
- the spray device 10 has a plurality of tanks 54,
- each tank 54-60 is assigned a delivery unit 62, 64, 66, 68, by means of which the respective liquid A, B, C, TF can be removed and supplied to the spray nozzle unit 40.
- the spray device 10 has a plurality of spray nozzle units 40, each injection unit 40 each having a spray nozzle 14.
- each spray nozzle 14 of each spray nozzle unit is preceded in each case by a mixing unit 70, which are each connected to the conveyor units 62-68 by a respective supply line 28-31.
- the mixing unit 70 has a mixing chamber 72 and actuatable metering valves 74 for metering the respective liquid A, B, C, TF into the mixing chamber 72.
- the feed lines 28-31 in each of the feed lines 28-31
- Metering valves 74 each associated with an actuatable metering valve 74, wherein each pressure reducing valve 42-45 each an actuatable metering valve 74 is connected downstream.
- FIG. 6 shows a schematic detail view of a pressure-reducing valve 42-46 in the mixing unit 70 according to FIG. 5.
- the pressure-reducing valve has
- a filter element 76 for the control pressure line 52 or the fluid of the control pressure source 50 and a valve outlet 84 for the respective fluid A, B, C, TF.
- the spring-loaded closing body 78 is connected to the flexible membrane 80.
- the output pressure of the pressure reducing valve 42-46 On one side of the membrane 80 is the output pressure of the pressure reducing valve 42-46 and on the opposite side is the control pressure.
- the control pressure On one side of the membrane 80 is the output pressure of the pressure reducing valve 42-46 and on the opposite side is the control pressure.
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)
- Catching Or Destruction (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19709655.5A EP3764782A1 (de) | 2018-03-13 | 2019-03-01 | Landwirtschaftliche spritzvorrichtung |
BR112020014988-8A BR112020014988A2 (pt) | 2018-03-13 | 2019-03-01 | Dispositivo de pulverização agrícola |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018203756.6A DE102018203756A1 (de) | 2018-03-13 | 2018-03-13 | Landwirtschaftliche Spritzvorrichtung |
DE102018203756.6 | 2018-03-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019174933A1 true WO2019174933A1 (de) | 2019-09-19 |
Family
ID=65717973
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2019/055152 WO2019174933A1 (de) | 2018-03-13 | 2019-03-01 | Landwirtschaftliche spritzvorrichtung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3764782A1 (de) |
BR (1) | BR112020014988A2 (de) |
DE (1) | DE102018203756A1 (de) |
WO (1) | WO2019174933A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114730125A (zh) * | 2020-03-04 | 2022-07-08 | 松下知识产权经营株式会社 | 喷雾装置、喷雾方法以及雾空间演出*** |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1419617A (en) * | 1971-11-24 | 1975-12-31 | Fisons Ltd | Sprayer |
WO1997016964A1 (en) * | 1995-11-08 | 1997-05-15 | Hardi International A/S | A spray system for need dosage |
US20040135003A1 (en) * | 2002-12-13 | 2004-07-15 | Jaap Wilting | Sprayer system |
EP2671448A1 (de) * | 2012-06-05 | 2013-12-11 | Hardi International A/S | Landwirtschaftliche Feldspritze und Verfahren zum Betrieb einer landwirtschaftlichen Feldspritze |
WO2014134653A1 (en) * | 2013-03-06 | 2014-09-12 | Sean Haviland | Spray nozzle and spray nozzle system |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10353789A1 (de) * | 2003-11-18 | 2005-08-11 | Lechler Gmbh | Verfahren einer Pflanzenschutzspritze mit direkter Dosierung der Wirkstoffe an den Düsenhaltern durch hydraulisch angetriebene Dosierpumpen |
FR2964047B1 (fr) * | 2010-08-31 | 2015-05-22 | Exel Ind | Ensemble de pulverisation et pulverisateur equipe d'au moins un tel ensemble |
DE102017220028A1 (de) | 2017-11-10 | 2019-05-16 | Robert Bosch Gmbh | Spritzeinrichtung und Verfahren |
-
2018
- 2018-03-13 DE DE102018203756.6A patent/DE102018203756A1/de not_active Withdrawn
-
2019
- 2019-03-01 BR BR112020014988-8A patent/BR112020014988A2/pt not_active Application Discontinuation
- 2019-03-01 EP EP19709655.5A patent/EP3764782A1/de not_active Withdrawn
- 2019-03-01 WO PCT/EP2019/055152 patent/WO2019174933A1/de unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1419617A (en) * | 1971-11-24 | 1975-12-31 | Fisons Ltd | Sprayer |
WO1997016964A1 (en) * | 1995-11-08 | 1997-05-15 | Hardi International A/S | A spray system for need dosage |
US20040135003A1 (en) * | 2002-12-13 | 2004-07-15 | Jaap Wilting | Sprayer system |
EP2671448A1 (de) * | 2012-06-05 | 2013-12-11 | Hardi International A/S | Landwirtschaftliche Feldspritze und Verfahren zum Betrieb einer landwirtschaftlichen Feldspritze |
WO2014134653A1 (en) * | 2013-03-06 | 2014-09-12 | Sean Haviland | Spray nozzle and spray nozzle system |
Also Published As
Publication number | Publication date |
---|---|
BR112020014988A2 (pt) | 2020-12-22 |
DE102018203756A1 (de) | 2019-09-19 |
EP3764782A1 (de) | 2021-01-20 |
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