EP3764781A1

EP3764781A1 - Agricultural spraying device

Info

Publication number: EP3764781A1
Application number: EP19702024.1A
Authority: EP
Inventors: Oliver Meil; Olaf Ohlhafer; Steffen SIES; Hans-Arndt Freudigmann; Dieter Amesoeder
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2018-03-13
Filing date: 2019-01-17
Publication date: 2021-01-20
Also published as: WO2019174798A1; BR112020018400A2; DE102018203789A1

Abstract

The invention relates to an agricultural spraying device (11'') for discharging a treatment for liquid (26) to be discharged onto an agricultural area by means of a discharge unit (24), comprising a first metering valve (54), which can be connected to a first carrier liquid tank (30) by means of a first carrier liquid feed line (70) and to a first treatment liquid tank (40) by means of a first feed line (80) and is designed to meter a first carrier liquid from the first carrier liquid tank (30) and a first treatment liquid from the first treatment liquid tank (40) into a first liquid line (60) connected fluidically to the discharge unit (24), a second metering valve (56), which can be connected to a second carrier liquid tank (30) by means of a second carrier liquid feed line (72) and to a second treatment liquid tank (42) by means of a second feed line (82) and is designed to meter a second carrier liquid out of the second carrier liquid tank (30) and a second treatment liquid out of the second treatment liquid tank (42) into a second liquid line (62) connected fluidically to the discharge unit (24), and the liquid lines (60, 62) have a common section (69) opening into the discharge unit (24).

Description

description

title

Agricultural sprayer

State of the art

The invention relates to an agricultural spraying device for dispensing a treatment liquid to be delivered to an agricultural surface by means of a dispensing unit, with a first metering valve and a second

Metering valve. The present invention also relates to a

Control device and a computer program and an agricultural spray system with the spray device and the control device.

WO 2014/0896 A1 discloses a system for producing and dispensing a mixed liquid. Here, a plurality of valves is provided to prevent unwanted backflow of liquids in the system.

Disclosure of the invention

The present invention is an agricultural

Spraying device for dispensing a treatment liquid to be dispensed onto an agricultural surface by means of a dispensing unit according to independent claim 1.

The subject matter of the present invention is furthermore a computer program which is set up to carry out all the steps of a previously described method as well as a machine-readable storage medium with a computer program stored thereon. The present invention is finally an agricultural spray system according to claim 9 with the agricultural

Spraying device and the control device.

In particular, the spray device may be part of an agricultural

Spray system such as an agricultural sprayer or a crop protection device or be designed as an agricultural sprayer or a crop 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 working machine, for example a tractor

Tractor, a tractor or a (self-propelled or autonomous) sprayer, be. The spray device may also be mounted on a hydraulic device of the agricultural machine. It is also conceivable that the spraying device is constructed on a loading surface of the agricultural machine. Alternatively, the

Sprayer be attached to the agricultural machine. The agricultural spray device is designed to treat an agricultural area with the treatment liquid, in particular with a spray mixture. Preferably, the spray device, comprising the valves and the dispensing unit, is arranged on a partial width of a spray boom of a field sprayer. Particularly preferred are at the partial width of the spray boom of the sprayer at least two, in particular a plurality, the

arranged agricultural spraying devices according to the invention. In this case, each agricultural spraying device preferably has a dispensing unit designed as a single spray nozzle.

An agricultural area can be understood as an agricultural area, a cultivated area for plants or even a plot of such an area or cultivated area. The

Agricultural area can thus be a field, arable land, a grassland or a pasture.

The plants can, for example, crops whose fruit

used agriculturally (for example as food, feed or as energy crop), as well as weeds or weeds and grass weeds. The plants can be part of the agricultural area.

The dispensing or applying the treatment liquid to the

Agricultural area or on a plant on the agricultural area may be part of a treatment of the agricultural area. It is also conceivable that the dispensing of the treatment liquid comprises treating the agricultural surface with the liquid for mechanical processing or damage, for example, of weeds on the agricultural surface.

Under a liquid can in the context of the present invention, a

Treatment liquid or a carrier liquid to be understood. In the context of the present invention, a treatment liquid can be understood as an agriculturally usable liquid. The treatment liquid is preferably a spray mixture. In the context of the present invention, a liquid can also be understood as meaning a suspension or an emulsion or a mixture of a suspension and an emulsion.

The treatment liquid has at least one active agent. The active agent may be a spray, that is a preparation or

Plant protection products, in particular a pesticide concentrate have. The active agent may accordingly comprise, for example, a herbicide, fungicide or an insecticide (pesticide). However, the active agent may also comprise a fertilizer, in particular a fertilizer concentrate. The active agent may accordingly have a liquid fertilizer and / or a growth regulator. The active agent can be formed as a liquid or as a solid, for example in the form of granules, or as a pre-dissolved solid, for example in the form of pre-dissolved granules.

The treatment liquid preferably further comprises a carrier liquid for diluting the active agent. In the context of the present invention, a carrier liquid can be understood as meaning a liquid which is designed to be mixed with the active agent in order to bring it out

or dispensing the active agent, for example the Allow or improve crop protection products or fertilizer. It is also conceivable that a Wirkmitel present as a solid or granules is suspended in the carrier liquid. It is also conceivable that a non-soluble in the carrier liquid Wirkmitel is emulsified in the carrier liquid. The carrier liquid is preferably water.

The treatment liquid is preferably formed as a plant protection agent diluted with a carrier liquid or fertilizer diluted with a carrier liquid. The treatment liquid is particularly preferably in the form of a mixture of at least two plant protection agents diluted with a carrier liquid or two fertilizers diluted with a carrier liquid. Further preferably, the treatment liquid is diluted as a mixture of three with a carrier liquid

Pflanzenschutzmiteln or three mitels a carrier liquid diluted fertilizers formed.

The spraying device has a dispensing unit, in particular a

Spray nozzle unit, for dispensing or applying the treatment liquid. It is conceivable that the spray device at least one

Carrier liquid tank and at least two treatment liquid tanks comprises.

The carrier liquid can be separated from the carrier liquid tank by means of a

Carrier liquid supply line and a liquid line to the dispensing unit to be guided or passed. The treatment liquid can from the respective treatment liquid tank by means of a supply line and the

Liquid line to be guided or directed to the dispensing unit. Under a carrier liquid supply or a supply line or a liquid line can be understood in the context of the present invention, a portion of the corresponding carrier liquid supply or supply line or liquid line. The carrier liquid supply line, the supply line and the liquid line may be formed as a fluidic connection line, for example in the form of a tube, tube, channel or a tube. Next, the spray device on two metering valves. Preferably, each metering valve is assigned a treatment liquid tank. It is conceivable that each metering valve is assigned a carrier liquid tank. Alternatively, all metering valves can be assigned the same carrier liquid tank. Furthermore, each metering valve is a carrier liquid supply line, a supply line and a

Fluid line assigned. In this case, the liquid lines have a common line section, which opens into the dispensing unit. It is conceivable that the Trägerflüssigkeitszuleitung a common

Feed line section, by means of which a common carrier fluid to the metering valves from a common carrier liquid tank the metering valves is feasible.

Each of the metering valves is by means of the respective metering valve associated Trägerflüssigkeitszuleitung with the respective metering valve associated carrier liquid tank and by means of the respective metering valve associated with the feed line associated with the respective metering valve

Treatment liquid tank connectable. Each of the metering valves is preferably connected to the carrier liquid tank assigned to the respective metering valve by means of the carrier fluid supply line assigned to the respective valve and to the treatment liquid tank assigned to the respective metering valve by means of the feed line assigned to the respective metering valve. Each of the metering valves is formed, the carrier liquid from the respective metering valve associated carrier liquid tank and the treatment liquid from the respective metering valve associated treatment liquid tank in the respective metering valve and with the dispensing unit fluidly

dosed connected fluid line. In other words, in other words, each of the metering valves is designed to control or regulate metering of the carrier liquid from the carrier liquid tank assigned to the respective metering valve and the treatment liquid from the treatment liquid tank assigned to the respective metering valve into the liquid line associated with the respective metering valve. By dosing a liquid by means of a valve, in the context of the present invention, it is possible to control a valve passing through or through the valve

understood to be passed through volume flow of the liquid. The metering thus comprises the targeted or defined feeding of the liquid to be metered to a line or unit arranged downstream of the valve. The dosing also includes the interruption of a feeding or

Passing the liquid to the conduit or unit located downstream of the valve. The liquid metering valve is thus designed to interrupt a passage of the liquid. The metering valves are arranged in the respective metering valve associated liquid line or integrated into the respective metering valve associated liquid line. In other words, in other words, the metering valves are at least partially disposed in the liquid line associated with the respective metering valve.

The control device according to the invention is designed to receive a specification of a mixing combination of the treatment liquid to be dispensed, for example by means of an operator interface, a wireless communication or a readout from a memory unit. The mixing combination of the treatment liquid to be dispensed may be a relative mixing combination of the treatment liquid-producing liquids. For example, the mixing combination may be "0 units of the first treatment liquid and 1 unit of the second treatment liquid and 1 unit unit of the carrier liquid" or "0 units of the treating liquids and 3 units of the carrier liquid". It is also conceivable that the

Mixing combination of the treatment liquid to be dispensed an absolute mixing combination of the treatment liquid generating fluids. In this case, a volume flow or an amount of the treatment liquid to be dispensed per unit area of the agricultural surface can be predefinable or predetermined relative to the relative mixing combination. It is conceivable that the mixing combination can be entered by an operator of the spray device by means of the input unit into the control device, for example by means of the user interface, which can be designed, for example, as a touch-sensitive screen. It is also conceivable that the mixing combination can be predetermined by means of the wireless communication connection such as, for example, mobile radio or a near field communication method. It is also conceivable that the mixing combination is stored on a storage unit associated with the control device.

Furthermore, the control device is designed to control the valves and the dispensing unit. It is conceivable that the control device is formed, a Control signal, in particular an electrical, mechanical or pneumatic control signal to deliver control of a valve or the dispensing unit.

By means of the injection device according to the invention and the control device according to the invention, it is now possible, by means of standard valves of a technically simple design, to mix a mixture of liquids into one

To be dispensed flexible treatment fluid and at the same time dispensed treatment liquid regardless of the selected

Dispense mixing combination with constant volume flow. This allows an agricultural area spatially selective with different

Treatment liquids are treated and at the same time an amount of expense per unit area on the agricultural area discharged

Treatment liquid can be kept constant.

It is advantageous if the metering valves with a common

Carrier liquid tank can be connected and the first carrier liquid supply line and the second carrier liquid supply line a common

Have carrier liquid supply section, by means of which a

common carrier liquid from the common carrier liquid tank to the metering valves is feasible. The carrier liquid supply section is thus part of the first carrier liquid supply line and the second

Carrier liquid supply. With this configuration, the spray device is designed to guide the common carrier liquid to each of the metering valves with the same carrier liquid pressure. In identical

Carrier liquid supply lines and metering valves is thus easily feasible the same volume flow of the carrier liquid to each of the metering valves.

It is also advantageous if the agricultural spray device has an additional valve,

- Is arranged and formed in the common carrier liquid supply section, a dosing of the common carrier liquid from the common carrier liquid tank in the common

To control carrier liquid supply section to the metering valves, or

- Is arranged in the common line section of the liquid lines and is adapted to metering the dispensed Treatment liquid in the common line section of

To control liquid lines to the dispensing unit.

The additional valve is a metering valve. That in the common

Carrier liquid supply section arranged additional valve preferably has a first valve position, in particular a closed position to a

Passages of the common carrier liquid from the common

Carrier liquid tank in the common carrier liquid supply section to interrupt the metering valves. More preferably, the additional valve disposed in the common carrier liquid supply section has a second valve position, in particular a passage position, in order to pass the common carrier liquid from the common carrier liquid tank into the common carrier liquid feed section to the metering valves.

The additional valve arranged in the common line section of the liquid lines preferably has a first valve position, in particular a closed position, in order to allow a passage to be dispensed

To interrupt treatment liquid to the dispensing unit. More preferably, the additional valve arranged in the common line section of the liquid lines has a second valve position, in particular one

On passage position to pass through the treatment liquid to be dispensed to the dispensing unit. The additional valve can be a steadily adjustable valve. Particularly preferably, the additional valve is designed as a 2- / 2-way valve. By means of the additional valve, the spray device can be realized or constructed by means of particularly simple metering valves.

Furthermore, it is advantageous if at least one of the metering valves

a first valve position, by means of which a passage of the respective treatment liquid from the respective

Treatment liquid tank in the respective liquid line

is interruptible, and

a second valve position, by means of which a passage of the respective carrier liquid from the respective carrier liquid tank can be interrupted in the respective liquid line.

The first valve position of the metering valve is preferably a closed position for the passage of the treatment liquid and a passage position for the Passages of the carrier liquid. The second valve position of the metering valve is preferably a passage position for the passage of the

Treatment liquid and a closed position for the passage of the carrier liquid. That is, in other words, preferably, the metering valve is formed in the first valve position, the passage of

To interrupt treatment liquid from the treatment liquid into the liquid line and pass carrier liquid from the carrier liquid tank in the liquid line or supply the liquid line.

In other words, in other words, the metering valve in the second valve position is preferably designed to pass the treatment liquid from the treatment liquid tank into the liquid line or to the liquid line and to interrupt the passage of carrier liquid from the carrier liquid tank into the liquid line. As a result of this configuration, the spray device is designed to interrupt passage of the carrier liquid or of the treatment liquid through a change in the valve position of a metering valve between the first and the second valve position adapted to the agricultural surface.

It is also advantageous if at least one of the metering valves has a further valve position, by means of which a passage of the respective treatment liquid from the respective treatment liquid tank into the respective liquid line and the dosing of the respective carrier liquid from the respective carrier liquid tank in the respective liquid line are simultaneously interrupted. As a result, the spray device is designed to allow a passage of liquid through the respective metering valve to the

Disconnect unit completely. In particular, thereby the delivery of the liquid to be dispensed is completely interruptible.

In addition, it is advantageous if each of the metering valves a

Having valve position, by means of which a volume flow of the respective metered into the respective liquid line liquid for the metering valves is the same size. The valve position of the metering valves, by means of which the volume flow of the respective metered into the liquid line treatment liquid or carrier liquid for each metering valve is the same size, is preferably one

Passage position for the respective treatment liquid or carrier liquid. It is conceivable that the metering valves are equally constructed and controlled so that at the same pressure of the treatment liquids or

Carrier liquids, the volume flow of the metered into the liquid line treatment liquids or carrier liquids for each metering valve is the same size. In other words, if several metering valves have this passage position, the volume flow of the respective metered from the respective metering valve of the treatment liquid to be dispensed or supplied treatment liquid or carrier liquid is the same size. For this purpose, the respective treatment liquid or carrier liquid

For example, by means of a constant pressure source with a constant pressure acted upon. Thus, the agricultural spray device is adapted to interrupt a dosing or supplying a first liquid to the dispensed treatment liquid by means of a first metering valve and at the same time to activate a dosing or supplying a second liquid to the dispensed treatment liquid by means of a second metering valve, wherein the volume flow generated the liquid to be dispensed remains constant.

It is particularly advantageous if

at least one of the metering valves and / or the additional valve as a steadily adjustable valve and / or

at least one of the metering valves as a 3/2-way valve or as a 3/3-way valve

Valve and / or

the additional valve is designed as a 2/2-way valve.

The constantly adjustable can be a continuously adjustable or continuously controllable valve or a continuous valve. The continuously adjustable valve is designed to allow a steady transition of valve positions. For example, the continuously variable valve may be a proportional valve. The 2/2-way valve has two connections for fluid lines or supply lines and two valve positions. The 3/2-way valve or the 3/3-way valve has three connections for fluid lines or supply lines and two or three valve positions. Preferably, the 3/2-way valve or 3/3-way valve has two connections for two fluidic supply lines and a connection for a fluidic line or discharge or routing. That is, in other words, preferably, the 3/2-way valve or the 3/3-way valve is formed, two upstream of the 3/2-way valve or 3/3-way valve arranged supply lines arranged with a downstream of the 3/2-way valve and the 3/3-way valve To connect line or derivative or routing. Here, the 3/2-way valve on two valve positions, by means of each valve position exactly one liquid is passed into the liquid line. As a result, the volume flow through the metering valve is constant regardless of the valve position of the valve. By this configuration can optionally a

Mixing combination of the dispensed treatment liquid set very precisely or the injection device can be realized particularly cost.

Furthermore, it is advantageous if the agricultural spraying device has a further metering valve, which by means of another

Carrier liquid supply to a further carrier liquid tank and connected by means of a further supply line with a further treatment liquid tank and is adapted to meter a further carrier liquid from the further carrier liquid tank and a further treatment liquid from the further treatment liquid tank in a further fluidically connected to the dispensing unit liquid line. The further metering valve can be designed as a steadily adjustable valve. Preferably, the further metering valve is designed as a 3/2-way valve or 3/3-way valve. More preferably, the further metering valve is fluidically parallel, that is, neither upstream nor downstream of the first and second metering valves, and disposed upstream of the dispensing unit. This allows the dispensable

Treatment liquid variable in time and flexible adapted to be treated agricultural area from the up to three

Treatment liquids and the carrier liquid can be generated.

Finally, it is advantageous if the agricultural spray device is formed by means of an agricultural associated

Control device to be controlled in a total closed position. For this purpose, the control device is set up to control the first and the second metering valve in each case in a closed position, in order to pass through or supply the

Treatment liquids from the treatment liquid tanks in the

To break fluid lines. As a result, the spray device is formed, a return flow of carrier liquid in the

Treatment liquid tank or the supply lines to the

Prevent treatment liquid tanks when no treatment liquid is dispensed. Also of advantage is a computer program product or computer program with program code which can be stored on a machine-readable carrier or storage medium such as a semiconductor memory, a hard disk memory or an optical memory and for carrying out, implementing and / or controlling the steps of the method according to one of the embodiments described above is used, especially when the program product or program is executed on a computer or a device.

drawings

The invention will be described below with reference to the accompanying drawings

exemplified in more detail. Show it:

Figure 1 is a schematic representation of an embodiment of an agricultural spray system with the spray device.

Fig. 2-3 are each a schematic representation of an agricultural

Injection device; and

4 - 6 each a schematic representation of an embodiment of an agricultural spray device.

In the following description of preferred embodiments of the present invention are for the in the various figures

represented and similar elements acting the same or similar

Reference is made to a repeated description of the

Elements is omitted.

In Fig. 1, an agricultural spray system is shown in its

Entity is provided with the reference numeral 10.

The agricultural spray system 10 includes a tractor 12 and a mounted sprayer 14 on the tractor 12. The mounted sprayer 14 has a spray boom 16, a control device 18 and a tank unit 20 with a plurality of liquid tanks. The liquid tanks each contain a liquid.

The spray boom 16 is divided into several sections 22. Each of the

Partial sections 22 has a plurality of dispensing units 24 designed as spray nozzles 24. On each section 22 are several agricultural

Spray devices arranged. In this case, each spray nozzle 24 is assigned part exactly to an agricultural spray device. The agricultural

Spraying device comprises the respective spray nozzle and the spray nozzle 24 associated valves and liquid lines.

The spray nozzles 24 are connected to the tank unit 20 via hose connections (not shown). Thus, the spray nozzles 24 are formed to spray the liquid 26 to be dispensed from the tank unit 20 onto an agricultural surface 28.

Each of the spray nozzles 24 has a plurality of valves associated with the spray nozzle 24. The valves are arranged upstream of the associated spray nozzle 24 at the corresponding part width 22 and by means of one each

Hose connection with a liquid tank of the tank unit 20 is connected.

The control device 18 is electronically connected to each of the spray nozzles 24 such that the valves can be actuated automatically via the control device 18. Here, the valves are controlled such that the

Liquids from the liquid tanks of the tank unit 20 are metered into a liquid line opening in the spray nozzle 24.

In Fig. 2, an agricultural spray device is shown, which is provided in its entirety by the reference numeral 13.

The spray device 13 has a water tank 30 and three

Treatment liquid tanks 40, 42, 44 on. The water tank 30 contains water. The treatment liquid tanks 40, 42, 44 each contain a plant protection agent prediluted to a defined concentration. Furthermore, the spray device 13 comprises a water valve 50 and three

Metering valves 54, 56, 58, a plurality of liquid lines 60, 64, 66, 68, and the spray nozzle 24. The water valve 50 is formed as a 2/2-way valve 50. The metering valves 54, 56, 58 are arranged in the respective liquid line 64, 66, 68. The metering valves 54, 56, 58 are also designed as 2/2-way valves 54, 56, 58. The liquid lines 60, 64, 66, 68 are as

Hose connection 60, 64, 66, 68 are formed and have a common line section 69, which opens into the spray nozzle 24.

The water tank 30 is connected by means of a supply line 70 to the water valve 50. The treatment liquid tanks 40, 42, 44 are connected by means of supply lines 80, 82, 84 with the respective metering valve 54, 56, 58. The supply lines 70, 80, 82, 84 are formed as hose connections 70, 80, 82, 84.

The water valve 50 and the metering valves 54, 56, 58 are electronically controllable by means of a control device 13 associated with the spray device. As a result, the water valve 50 is designed to meter water from the water tanks 30 into the liquid line 60. Furthermore, the metering valves 54, 56, 58 are designed to meter the respective treatment liquid from the treatment liquid tank 40, 42, 44 connected to the respective metering valve 54, 56, 58 into the respective liquid line 64, 66, 68.

In Fig. 3, an agricultural spray device is shown, which is provided in its entirety by the reference numeral 13 '.

The spray device 13 'differs from the spray device 13 by an additional water valve 52 and an additional liquid line 62. The water tank 32 contains water. The water valve 52 is designed as a 2/2-way valve 52.

The liquid line 62 is formed as a hose connection 62 and has a common line section 69 with the hose connections 60, 64, 66, 68, which opens into the spray nozzle 24. The water tank 30 is connected by means of an additional supply line 72 with the

Water valve 52 connected. The supply line 72 is designed as a hose connection 72.

The water valve 52 is electronically controllable by means of the control device 13 'associated control device. As a result, the water valve 52 is designed to meter water from the water tank 30 into the liquid line 62.

The spray device 13 'is designed to deliver the liquid 26 to be dispensed at a constant volume flow when the liquids in the lines 70, 72, 80, 82, 84 are subjected to a constant liquid pressure and controlling a first valve 50, 52, 54, 56 , 58 is compensated from a passage position to a closed position by controlling a second valve 50, 52, 54, 56, 58 from a closed position to an open position.

In Fig. 4, an agricultural spray device is shown, which is provided in its entirety by the reference numeral 11.

The agricultural spraying device 11 is part of the mounted sprayer 14 or of the agricultural spraying system 10.

The spray device 11 has a water tank 30 and three

Treatment liquid tanks 40, 42, 44 on. The water tank 30 contains water. The treatment liquid tanks 40, 42, 44 each contain a plant protection agent prediluted to a defined concentration.

Furthermore, the injection device 11 comprises three metering valves 54, 56, 58, three fluid lines 60, 62, 64, as well as the spray nozzle 24. The metering valves 54, 56, 58 are arranged in the respective fluid line 62, 62, 64. The metering valves 54, 56, 58 are designed as 3/3-way valves 54, 56, 58. The liquid lines 60, 62, 64 are formed as a hose connection 60, 62, 64 and have a common line section 69, which opens into the spray nozzle 24. The water tank 30 is by means of a respective supply line 70, 72, 74 with the

Metering valves, 54, 56, 58 connected. The treatment liquid tanks 40, 42, 44 are connected by means of supply lines 80, 82, 84 with the respective metering valve 54, 56, 58. The leads 70, 72, 74, 80, 82, 84 are as

Hose connections 70, 72, 74, 80, 82, 84 formed.

The metering valves 54, 56, 58 are by means of the spray device 11th

associated control device 18 of the spray system 10 electronically controlled. As a result, the metering valves 54, 56, 58 are formed, water from the

Water tank 30 and the respective treatment liquid from the associated with the respective metering valve 54, 56, 58 treatment liquid tank 40, 42, 44 in the respective liquid line 60, 62, 64 to dose. In this case, the control device 18 is designed to control the valves 54, 56, 58 based on a specification of a mixing combination of the treatment liquid 26 to be dispensed by the control device 18.

The spray device 11 is designed to deliver the liquid to be dispensed 26 at least for the following combinations of valve positions with a constant volume flow.

In a first combination, the metering valves 54, 56, 58 each assume a first passage position in order to supply the treatment liquids

Liquid lines 60, 62, 64 and the passage of water from the water tank 30 to the liquid lines 60, 62, 64 to

interrupt.

In a second combination, two of the metering valves 54, 56, 58 occupy a first pass position to pass the treatment liquids to the respective liquid lines and to interrupt the passage of water from the water tank 30 to the respective liquid lines, and one of the metering valves 54, 56, 58 assumes a second passage position to interrupt passage of the respective treatment liquid and water from the water tank to the respective liquid line

pass. In a third combination, one of the metering valves 54, 56, 58 occupies a first passage position to pass the respective treatment liquid to the respective liquid line and to interrupt the passage of water, and two of the metering valves 54, 56, 58 take a second one

Durchlassstellung on to the passage of the respective

To interrupt treatment liquid and pass water from the water tank to the respective liquid line.

Furthermore, the spray device 11 is designed to be controlled by the control device 18 in a preferred overall closing position. Here, the control device 18 is set up, the metering valves 54, 56, 58 in each one

To control closed position to interrupt a passage of the treatment liquids from the treatment liquid tanks 40, 42, 44 and a passage of water from the water tank 30 to the liquid lines 60, 62, 64.

In Fig. 5, an agricultural spray device is shown, which is provided in its entirety by the reference numeral 1.

The spray device 1 differs from the spray device 11 in that the supply lines 70, 72, 74 of the water tank 30 have a common Zuleitungsabschnit 76 and an additional valve 59 is disposed in the common Zuleitungsabschnit 76. The additional valve 59 is designed as a 2/2-way valve 59.

Furthermore, the spray device 1 differs from the spray device 11 in that the metering valves 54 ', 56', 58 'are designed as 2/2-way valves 54', 56 ', 58'.

The additional valve 59 is electronically controlled by means of the spray device 1 associated control device 18 of the spray system 10. As a result, the additional valve 59 is configured to control a supply of water from the water tank 30 in the common Zuleitungsabschnit 76 to the metering valves 54 ', 56', 58 '. Here, the control device 18 is designed to control the additional valve 59 based on a received from the control device 18 specification of a mixing combination of the dispensed treatment liquid 26. The spray device 1 is designed to deliver the liquid to be dispensed 26 at least for the following combinations of valve positions with a constant volume flow.

In a first combination, the metering valves 54 ', 56', 58 'each occupy a first passage position to supply the treatment liquids

Leave fluid lines 60, 62, 64 and interrupt the passage of water from the water tank 30. In this case, the additional valve 59 assumes an arbitrary valve position.

In a second combination, two of the metering valves 54 ', 56', 58 'occupy a first passage position to pass the treatment liquids to the respective liquid lines and to interrupt the passage of water, and one of the metering valves 54', 56 ', 58' decreases a second

On-pass setting to interrupt a passage of the respective treatment liquid and water from the water tank 30 to the respective

Pass liquid line. In this case, the additional valve 59 assumes a passage position to water from the water tank 30 by means of

Water supply lines 70, 72, 74 to the metering valves 54 ', 56', 58 'pass.

In a third combination, one of the metering valves 54 ', 56', 58 'occupies a first passage position to pass the respective treatment liquid to the respective liquid line and to interrupt the passage of water, and two of the metering valves 54', 56 ', 58' take a second passage position to the passage of the respective

To interrupt treatment liquid and pass water from the water tank to the respective liquid line. Here, the additional valve 59 assumes a passage position to pass water from the water tank 30 by means of the water supply lines 70, 72, 74 to the metering valves 54 ', 56', 58 '.

Furthermore, the spray device 1 is designed to be controlled by means of the control device 18 in a preferred overall closing position. Here, the control device 18 is arranged to control the additional valve 49 in a closed position to interrupt the passage of water from the water tank 30 to the metering valves 54 ', 56', 58 ', and the metering valves 54', 56 ', 58' in each to control a closed position to allow passage of the

Treatment liquids from the treatment liquid tanks 40, 42, 44 to the liquid lines 60, 62, 64 to interrupt.

In Fig. 6, an agricultural spray device is shown, which is provided in its entirety by the reference numeral 11 ".

The spraying device 11 "differs from the spraying device 11 in that an additional valve 59 'is arranged in the common line section 69. The additional valve 59 'is designed as a 2/2-way valve 59'.

Furthermore, the spraying device 11 "differs from the spraying device 11 in that the metering valves 54", 56 ", 58" are designed as 3/2-way valves 54 ", 56", 58 ".

The additional valve 59 'is electronically controllable by means of the spray device 11 "associated control device 18 of the spray system 10. As a result, the additional valve 59 'is designed to guide the dispensed

Control treatment liquid 26 in the common line section 69 of the liquid line to the spray nozzle 24. Here is the

Control device 18 is designed to control the additional valve 59 'based on a received from the controller 18 specification of a mixing combination of the dispensed treatment liquid 26.

The spray device 11 "is designed to deliver the liquid to be dispensed 26 at least for the following combinations of valve positions with a constant volume flow.

In this case, the additional valve 59 'assumes a passage position for all the combinations listed below in order to allow the treatment liquid 26 to be dispensed to pass to the dispensing unit 24.

In a first combination, the metering valves 54 ", 56", 58 "each occupy a first passage position to supply the treatment fluids

Leave fluid lines 60, 62, 64 and interrupt the passage of water from the water tank 30. In a second combination, two of the metering valves 54 ", 56", 58 "enter a first pass position to pass the treatment liquids to the respective liquid lines and to interrupt the passage of water, and one of the metering valves 54", 56 ", 58" decreases a second passage position to the passage of the respective

To interrupt treatment liquid and pass water from the water tank 30 to the respective liquid line.

In a third combination, one of the metering valves 54 ", 56", 58 "occupies a first passage position to pass the respective treatment liquid to the respective fluid line and to interrupt the passage of water, and two of the metering valves 54", 56 ", 58". assume a second passage position to interrupt passage of the respective treatment liquid and water from the water tank 30 to the respective one

Pass liquid line.

Furthermore, the spray device 11 "is designed to be controlled by means of the control device 18 in a preferred overall closing position. Here, the control device 18 is adapted to control the additional valve 59 'in a closed position to interrupt the passage of the treatment liquid to be dispensed spray nozzle 24, and the metering valves 54 ", 56", 58 "in each case to control a closed position to a Passages of the treatment liquids from the treatment liquid tanks 40, 42, 44 to the liquid lines 60, 62, 64 to interrupt.

If an exemplary embodiment comprises a "and / or" link between a first feature and a second feature, then this is to be read so that the embodiment according to one embodiment, both the first feature and the second feature and according to another embodiment either only first feature or only the second feature.

Claims

claims

1. Agricultural spray device (11; 11 '; 11 ") for delivering a

to be dispensed treatment liquid (26) on an agricultural surface (28) by means of a dispensing unit (24), with

a first metering valve (54; 54 '; 54 "), which by means of a first

Carrier liquid supply line (70) with a first carrier liquid tank (30) and by means of a first supply line (80) with a first

Treatment liquid tank (40) is connectable and formed, a first carrier liquid from the first carrier liquid tank (30) and a first treatment liquid (26) from the first

Dosing treatment liquid tank (40) into a first fluid line (60) fluidly connected to the dispensing unit (24),

- A second metering valve (56; 56 '; 56 "), by means of a second

Carrier liquid supply line (72) with a second carrier liquid tank (30) and by means of a second supply line (82) with a second

Treatment liquid tank (42) is connectable and formed, a second carrier liquid from the second carrier liquid tank (30) and a second treatment liquid (26) from the second

Dosing treatment liquid tank (52) into a second fluid line (62) fluidically connected to the dispensing unit (24), and

- The liquid lines (60, 62) a common in the

Dispensing unit (24) opening line section (69).

2. Agricultural spray device (11 ') according to claim 1, characterized

characterized in that the metering valves (54 ', 56') are connectable to a common carrier liquid tank (30) and the first

Carrier liquid supply line (70) and the second carrier liquid supply line (72) have a common carrier liquid supply section (76), by means of which a common carrier liquid from the common carrier liquid tank (30) to the metering valves (54 ', 56') is feasible.

3. agricultural spray device (11 ', 11'') according to claim 1 or 2, characterized by an additional valve (59, 59'), - Which is arranged and formed in the common carrier liquid supply section (76), a dosing of the common

Carrier liquid from the common carrier liquid tank (30) in the common carrier liquid supply section (76) to the metering valves (54 ', 56') to control, or

- That in the common line section (69) of the

Liquid lines (60, 62) is arranged and adapted to control a dosing of the treatment liquid to be discharged (26) in the common line section (69) of the liquid line (60, 62) to the dispensing unit (24).

4. Agricultural spray device (11; 11 '; 11 ") according to one of

previous claims, characterized in that at least one of the metering valves (54, 56; 54 ', 56'; 54 ", 56")

- Having a first valve position, by means of which a passage of the respective treatment liquid from the respective

Treatment liquid tank (40, 42) in the respective liquid line (60, 62) is interruptible, and

- Having a second valve position, by means of which a passage of the respective carrier liquid from the respective carrier liquid tank (30) in the respective liquid line (60, 62) is interruptible.

5. Agricultural sprayer (11) after one of the previous

Claims, characterized in that at least one of

Dosing valves (54, 56) has a further valve position, by means of which a passage of the respective treatment liquid from the respective treatment liquid tank (40, 42) in the respective liquid line (60, 62) and a passage of the respective carrier liquid from the respective carrier liquid tank (30) in the respective liquid line (60, 62) can be interrupted simultaneously.

6. Agricultural spray device (11; 11 '; 11 ") according to one of

previous claims, characterized in that each of

Dosing valves (54, 56, 54 ', 56', 54 ", 56") have a valve position, by means of which a volume flow of the respective into the respective liquid line (60, 62) metered liquid for the metering valves (54, 56, 54 ', 56', 54 ", 56") is the same size.

7. Agricultural spraying device (11; 11 '; 11 ") according to one of

previous claims, characterized in that

at least one of the metering valves (54, 56, 54 ', 56', 54 ", 56") and / or the additional valve (59, 59 ') as a continuously adjustable valve and / or

- At least one of the metering valves (54, 56, 54 ', 56', 54 ", 56") as a 3/2-way valve (54 ', 56', 54 ", 56") or as 3/3-way Valve (54, 56) and / or

- The additional valve (59, 59 ') as a 2/2-way valve (59, 59') are formed.

8. Agricultural spray device (11; 11 '; 11 ") according to one of

previous claims, characterized by a further metering valve (58; 58 '; 58 "), which by means of a further carrier liquid supply (74) with another carrier liquid tank (30) and by means of a further supply line (84) with a further treatment liquid tank (44) connectable and is formed to meter a further carrier liquid from the further carrier liquid tank (30) and a further treatment liquid from the further treatment liquid tank (44) in a further with the dispensing unit (24) fluidly connected liquid line (64).

9. Agricultural spray system (10) with a first and a second carrier liquid tank (30), a first and a second

Treatment liquid tank (40, 42) and an agricultural

Spray device (11, 11 ', 11 ") according to one of the preceding claims.

10. Control device (18) for controlling a delivery of a treatment liquid (26) to be delivered to an agricultural surface (28) by means of an agricultural spraying device (11, 11 ', 11 ") with a

Dispensing unit (24), wherein the control device (18) is set up,

- a specification of a mixing combination of the delivered

Receiving treatment liquid (26);

to control a first metering valve (54; 54 '; 54 ") into a first metering valve position based on the received specification to provide a first carrier liquid of a first carrier liquid tank (30) and a first carrier liquid first treatment liquid from a first

to control a second metering valve (56; 56 '; 56 ") to a second metering valve position based on the received preset to provide a second metering valve position

Carrier liquid from a second carrier liquid tank (30) and a second treatment liquid from a second

Dosing treatment liquid tank (42) into a second fluid line (62) fluidically connected to the dispensing unit (24),

- At least one of the valves (54, 56, 54 ', 56', 54 ", 56") in a

Closed position is controlled to interrupt passage of at least one liquid from the respective tank in the respective liquid line (60, 62); and

- controlling the dispensing unit (24) to deliver the

Dispensing treatment liquid (26) by means of the dispensing unit (24).