Classifications

• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01C—PLANTING; SOWING; FERTILISING
  • A01C23/00—Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
  • A01C23/04—Distributing under pressure; Distributing mud; Adaptation of watering systems for fertilising-liquids
• • 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
• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01C—PLANTING; SOWING; FERTILISING
  • A01C23/00—Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
  • A01C23/007—Metering or regulating systems

Definitions

• the present invention relates to the field of agricultural machinery and in particular spraying devices for spreading and relates to a method of spreading a slurry and a sprayer suitable for the implementation of said method.
• the sprayer is the device used to spread on the ground or to distribute fertilizers or phytosanitary products projected in the form of fine drops on the vegetation. Spraying is the operation of spreading a certain amount of product (s) in fine drops and distributing it (s) evenly on the ground or on vegetation using a sprayer.
• a spray mixture obtained by mixing active product (s) with a carrier liquid such as clean water. After filling the sprayer tank with a carrier liquid such as clean water, the active product (s) is / are incorporated into the tank, on an appropriate area on the farm , to get the porridge. This operation forces the user to wear suitable protective clothing so as not to be in contact with the active product during its incorporation.
• the mixture is transported in the sprayer tank to the field to be sprayed on the targets (soil or vegetation) in more or less fine droplets depending on the purpose of the treatment.
• the tank is installed on a frame carried or towed by a vehicle such as a tractor or on a self-propelled frame.
• the sprayer comprises a frame, the tank, a spray boom fitted with spray nozzles and which may consist of one or more articulated arms.
• Each spray nozzle or section of spray nozzle (s) has a closure member capable of being controlled in opening or closing.
• the sprayer further comprises a spray circuit comprising a main pipe for conveying the slurry from the tank to the spray boom, that is to say to the spray nozzles.
• the sprayer also includes a pump and a pressure and / or flow regulator which allows the slurry to be conveyed under pressure to the spray nozzles.
• the main pipe ends in the sprayer boom with a spray loop in which the spray nozzles are mounted.
• rinsing the sprayer tank is an essential and systematic operation after each spraying step.
• the residual slurry in the bottom of the tank is diluted with clean water.
• This diluted volume circulates throughout the sprayer boom and is sprayed into the field. This operation has to be repeated several times.
• the sprayer requires the presence of a rinsing tank.
• the user must prepare the exact volume of slurry. But in practice this is not necessarily simple because it is necessary to prepare enough so that the entire surface of the field is treated without the remaining volume of slurry being too large at the end of the treatment.
• the technique of spraying by direct injection, using a direct injection system which the sprayer also comprises makes it possible to overcome these drawbacks.
• the sprayer tank contains only carrier liquid such as clean water, never slurry.
• the slurry is formed outside the tank.
• the active product (s) is / are stored in one or more separate container (s) and injected almost in real time using the direct injection system, this is that is to say when moving the sprayer on the surface to be treated, in the main pipe to be mixed with the carrier liquid coming from the tank.
• the injection of the active product (s) is done downstream of the pump and upstream of the pipe loop so as to supply the latter with the slurry thus formed outside the tank and resulting from the mixing between the carrier liquid and the active product (s) injected.
• a continuous circulation of the slurry is carried out.
• a return system in the tank comprising a return pipe located at the end of the ramp allows the slurry to circulate continuously.
• the return line also allows the boom to be primed so that spraying can be started without downtime.
• a known solution such as that which is the subject of document WO2014200896, consists in using an additional tank located between the tank containing the carrier liquid and the spray boom.
• the additional tank is intended to contain the slurry and to return the slurry at the end of the ramp to said additional tank.
• the addition of a tank so that the mixture is not immobilized in the boom involves recycling the mixture present in the additional tank in the boom during the spraying operation and, on the other hand on the other hand increases the dead volumes at the end of the treatment since the volume of slurry to be diluted during the rinsing step is greater.
• the object of the present invention is to overcome these drawbacks by proposing a method for spreading a slurry from a sprayer making it possible to start spraying without delay and at the right concentration, while limiting the risks of sedimentation. of active products in the spray boom.
• the method for spreading a slurry using a sprayer, said slurry resulting from a mixture of product (s) active (s) with a carrier liquid, said sprayer comprising:
• a supply circuit comprising a main pipe forming in the spray boom a spray loop in which said nozzles are mounted and a pump capable, in a spraying step, of delivering a quantity of carrier liquid, or of slurry, determined per unit of time and / or under a defined pressure to supply the spray loop,
• the sprayer further comprising a direct injection system suitable and intended to inject at least one active product into the main pipe to mix it with the carrier liquid and form the spray mixture downstream of the tank and upstream of the spray loop.
• Said method is essentially characterized in that it consists, from said sprayer further comprising at least one air vent mounted in the spray loop, in a spray initiation step, to expel the air present in the spray boom with the slurry or carrier liquid and to evacuate the air using the air bleeder (s), said priming step being carried out prior to the spraying step and in which the priming step the nozzles are closed.
• the present invention also relates to a sprayer for spreading a slurry, said slurry resulting from a mixture of active product (s) with a carrier liquid, said sprayer comprising: - a tank suitable and intended to contain either the slurry or a carrier liquid intended to form said slurry,
• a supply circuit comprising a main pipe forming in the spray boom a spray loop in which said nozzles are mounted and a pump capable, in a spraying step, of delivering a quantity of carrier liquid, or of slurry, determined per unit of time and under a defined pressure to supply the spray loop,
• said sprayer further comprising a direct injection system suitable and intended to inject at least one active product into the main pipe to mix it with the carrier liquid in order to form the spray mixture to be sprayed downstream of the tank and upstream of the spray loop,
• said sprayer characterized in that it further comprises at least one air trap mounted in the spray loop so as to be able to evacuate the air present in said spray loop.
• FIG. 1 shows a schematic view of the sprayer according to the present invention, in an embodiment comprising a system for direct injection of active product (s), during the step of initiating the spraying of the boom. spray,
• FIG. 2 shows the sprayer shown in Figure 2, with furthermore the control device, in the spraying step which follows the priming step
• FIG. 3 shows the sprayer shown in Figure 1 in the anti-clogging step allowing the circulation of the slurry in the spraying step stopped / interrupted momentarily
• FIG. 4 shows a schematic view of the sprayer shown in Figure 1, at the start of the step of emptying the air from the spray boom following the spraying step,
• FIG. 5 shows the sprayer shown in Figure 4, at the end of the air emptying step with gradual closure of the nozzles
• FIG. 6 shows the sprayer shown in Figure 1 in a water rinsing step of the spray boom following the emptying step
• FIG. 7 schematically shows the division into sections of a lateral part of a spray boom of a sprayer according to the present invention
• FIG. 8 represents a flowchart showing the different steps of the method according to the present invention.
• the accompanying figures show the steps that the method comprises, according to the present invention, for spreading a slurry using a sprayer, also forming the subject of the present invention and suitable for setting implementation of said method.
• Said pulverized slurry results from a mixture of active product (s) with a carrier liquid 1a.
• the carrier liquid 1a is preferably clear water, but may be another liquid or another liquid solution, preferably without active product (s) but which may optionally contain other materials and / or one or more active product (s).
• Such a sprayer comprises a tank 1 configured to contain either the slurry to be sprayed or a carrier liquid 1a intended to form the slurry 1b to be sprayed (by a mixture downstream of the tank 1 of said carrier liquid 1a with one or more active product (s), a spray boom 2 provided with spray nozzles 2a and a supply circuit 3 comprising a main pipe 3a forming in the spray boom 2 a spray loop 30a in which the nozzles 2a are mounted.
• the sprayer also includes a pump 3b for conveying the carrier liquid 1a or the slurry 1b from the tank 1 to said nozzles 2a and a regulator 4. This is a pressure and / or flow regulator such as valves, valves, and the like.
• the pump 3b makes it possible to ensure the displacement of the carrier liquid 1a and the regulator 4 makes it possible to adjust the pressure and / or the spray flow rate.
• the adjustment can be done continuously.
• the regulator 4 causes the return to the tank of a greater or lesser part of the flow rate of the pump 3b in order to ensure a regular flow rate at the level of the spray boom 2.
• the nozzle 2a is a fundamental element of the sprayer on which a large part of the effectiveness of the treatments depends. Called nozzle 2a any device which transforms a flow of liquid into a population of drops constituting the jet. The role of the nozzle is to calibrate and direct the mixture in fine drops by sprinkling as homogeneous as possible.
• the nozzles 2a are removable and interchangeable parts attached to nozzle holders. Each nozzle 2a can be installed on a single nozzle holder. It is common to use a rotary type multi-head nozzle holder that supports at least two nozzles and allows rapid switching from one type of nozzle to another, depending on the type of spraying.
• the nozzle holder is associated with an anti-drip element which prevents the spillage and wastage of slurry 1b at the level of the nozzles 2a during a temporary interruption of spraying or at the end of treatment.
• the anti-drip element is a mechanical, electrical or pneumatic means. The closing of each nozzle 2a can be ensured by a valve of the anti-drip type with membrane or anti-drip with flap. In the case of a multi-head nozzle holder, each nozzle 2a can be switched off / closed to prevent the release of liquid, which makes it easier to change and clean thanks to the membrane anti-drip.
• the tank 1 when the tank 1 is intended to contain the slurry 1b to be sprayed, the latter is formed by filling the tank 1 with carrier liquid 1a and then by incorporating, for example manually, one or more product (s) active in the tank 1 to mix it (s) with the carrier liquid 1a.
• the tank 1 is intended to contain the carrier liquid 1a, that is to say without incorporation of active product (s) in the tank 1, said slurry 1b is then formed outside the tank 1 by injection of active product (s), using a direct injection system 5, in the main line 3a transporting the carrier liquid 1a coming from of the tank 1 to mix it (s) with the latter in order to form the slurry 1b downstream of the tank 1 and upstream of the spray loop 30a.
• the sprayer also has a control device 9, shown in Figure 2, able to manage the different modes of use of the sprayer, such as filling, spraying, rinsing and incorporation where applicable. appropriate.
• Each mode of use of the sprayer may correspond to a position of the valves and / or taps of the supply circuit 3.
• the sprayer, and in particular the supply circuit 3a may also be provided with a measuring system 4b, such as as shown in the accompanying figures, at the level of the spray loop 30a.
• the measuring system 4b makes it possible to adjust the pressure and / or the spray flow rate.
• the user can be informed, via the control device 9, of the pressure and / or the flow rate prevailing in the spray loop 30a, thanks to the measuring systems 4b.
• the different stages of the process for spreading a spray mixture 1b from a sprayer are shown in the flowchart of figure 8.
• the key stages are the filling of tank 1, the initiation of spraying, l spreading the mixture 1b and rinsing the sprayer.
• the step of incorporating active products is added between the filling step and that of spreading.
• the priming step is provided before the spraying or spreading step so that the spraying takes place without delay as soon as the nozzles 2a are opened.
• a step of air-draining the spray boom 2 can be performed after the spraying step.
• This air draining step is optional, it has the advantage of reducing the number of rinses.
• a new step of emptying the spray boom 2 with air can be carried out after the rinsing step.
• the spray nozzles 2a are open to remove air and diluted volume.
• the nozzles 2a are closed so as not to spread spray mixture 1b and not to pollute the environment.
• the optional steps are shown in broken lines on the flowchart.
• the sprayer can be further equipped with a direct injection system 5 when the tank 1 is provided. to contain a carrier liquid 1 a and not the slurry 1 a.
• This direct injection system 5 is able to be controlled to inject one or more active product (s) into the main pipe 3a and mix it (s) with the carrier liquid 1a contained in and coming from the tank 1. It is possible, for example, to carry out localized treatments and to dose three to four products simultaneously.
• the tank 1 is filled with carrier liquid 1a, for example clear water and the active product (s) is / are stored separately, for example in an original tank or container (can).
• the mixture of carrier liquid 1a and active product (s) is produced directly in the supply circuit 3 and more particularly in the main pipe 3a.
• This is a delayed mixing spraying system that can use two separate circuits: a carrier liquid circuit 1a, for example clean water, supplied from the tank 1 and a slurry circuit 1b resulting from the injection of the liquid. active product (s) mixed with the carrier liquid 1a.
• This principle makes it possible to stop the treatment even if the tank 1 of carrier liquid 1a is not empty, to modulate the dose during the treatment, to easily change the active product (s) from one plot to the next. 'other and recover the volume of active product (s) which has not been sprayed.
• the risk of pollution during filling by an overflow of tank 1 is non-existent and the risk of the user coming into contact with the active product is reduced since there is no manual preparation of slurry 1 b.
• the direct injection system 5 is able to be controlled by the control device 9 during the spraying step.
• the direct injection system 5 is able to manage the concentration of the slurry 1b. Its role is to ensure a homogeneous mixture of the slurry 1b so that its concentration is identical from the start to the end of the spraying.
• An interesting feature of the direct injection system 5 is the possibility of injecting one or more active product (s) from the priming phase of the spray boom 2.
• the treatment of the targets can begin as soon as possible. opening of the nozzles 2a.
• Such a system is more environmentally friendly since the tank 1 only contains carrier liquid 1a, for example water, which is not contaminated and therefore does not require rinsing.
• the original container (s) only contain active product (s) and can simply be withdrawn at the end of the treatment.
• One of the modes of use is the spraying which consists in spreading a certain quantity of slurry 1b in fine drops and in distributing it uniformly on the ground or the vegetation.
• the pump 3b is able to deliver a quantity of carrier liquid 1a or of slurry 1b determined per unit of time and under a defined pressure. The pump 3b sucks in and sends the carrier liquid 1a or the mixture 1b towards the spray boom 2 and the nozzles 2a.
• the pump 3b can have two deactivation thresholds, namely a first threshold corresponding to the moment when the pump 3b starts to suck the air and when the quantity of spray mixture 1b applied per hectare is no longer known and a second deactivation threshold corresponding to the moment when the flow becomes very low at the level of the nozzles 2a.
• the volume of slurry 1b present in tank 1 is checked by means of a gauge. This gauge also makes it possible to define the volume remaining in tank 1.
• the volume remaining in tank 1 can also be defined by the second threshold for deactivating the pump 3b.
• On the main pipe 3a is arranged a non-return valve 3c and a flowmeter 3d.
• the non-return valve 3c prevents the slurry from returning to tank 1; it is located just upstream of the direct injection system 5, if applicable.
• the 3d flowmeter monitors the flow in the main line 3a. It is interposed between the pump 3b and the non-return valve 3c.
• the pressure regulator 4 makes it possible to preset, control and / or maintain constant the application of the carrier liquid 1 a or the slurry 1 b per unit area.
• the control device 9 can further include the flowmeter 3d capable of controlling the quantity of spray mixture 1b spread.
• the spray boom 2 can include at least one spray arm and the or each spray arm comprises the or at least one of the air trap (s) 7.
• a sprayer according to the present invention can be a mounted, trailed or self-propelled sprayer, not shown in the accompanying figures.
• a mounted sprayer all of the components of the sprayer are carried by a tractor. It is connected to the tractor by a three-point hitch.
• a trailed sprayer is distinguished when the sprayer or its frame has an axle providing a fulcrum on the ground and the tractor hitch only supports part of the load.
• the vehicle or machine is capable of moving by its own means.
• the frame can supporting the tank 1 and a support frame on which the spray boom 2 can be fixed.
• the spray boom 2 can be made up of several parts, for example three parts, namely a central part and two side parts which, once folded, facilitate the movement of the sprayer on the road. These parts work independently of each other, so that the spreading width can be adjusted as needed by means of a distributor.
• the three parts of the spray boom 2 can be connected to a distributor and one or two parts can be closed when the width to be treated is smaller than the dimension of the spray boom 2.
• the support frame can also be divided into three parts and equipped with mechanisms allowing the opening / deployment and folding of the spray boom 2.
• the two side parts can be further subdivided into sections, for example three sections T1, T2, T3 as can be achieved. see it in figure 7, composed of a central arm, an outer arm and a safety arm. The safety arm is placed outermost, it is able to fold up when it encounters an obstacle.
• Figure 7 are shown the central part and only a side part of the spray boom 2.
• the sprayer may further include a compressed air system 6 capable of and intended to inject compressed air into the spray loop 30a of the spray boom 2.
• the method for spreading a slurry 1 b consists, from said sprayer according to the present invention further comprising at least one air vent 7 mounted in the spray loop 30a, in a step of priming ( Figure 1) of the spraying carried out prior to the spraying step and in which the step of priming the nozzles 2a are closed, to expel the air present in the spray boom 2 with the carrier liquid 1a or the mixture 1b and to evacuate the air using the air vent (s) 7.
• the air which is expelled from the spray loop 30a is at atmospheric pressure.
• the priming of the spray boom 2 can thus be done in a simple manner and without the need for a return pipe between the spray loop 30a and the tank 1.
• the spray boom 2 is primed with carrier liquid 1 a and / or spray mixture 1 b to expel all the air present in the sprayer boom 2.
• the sprayer boom 2 is primed, it is free of air.
• the air vent 7 is preferably an automatic air vent capable of automatically discharging the air contained in the spray loop 30a. It is capable of closing automatically as soon as all or almost all of the air has been evacuated from the spray loop 30a.
• the air trap 7 can preferably be placed, as can be seen in Figures 1, 2, 4, 5, 6, 7 in the center of the spray loop 30a.
• the air bleeder 7 can be placed close to the center of the spray loop 2.
• Several air bleeders 7, for example three air bleeders 7, preferably automatic air bleeders, can be mounted in the spray loop 30a as can be seen in FIG. 2, preferably distributed along the branch of the spray loop 30a comprising the nozzles 2a.
• the spray loop 30a also includes a valve 2b intended to be open or closed.
• This valve 2b is in the open state during the priming step.
• This valve 2b is also open during the spraying step, it allows application of the slurry at three points in the spray loop 30a.
• the valve 2b is located towards the center of the spray loop 30a. Valve 2b is closed during the anti-clogging or continuous circulation step.
• the method may consist, when the pressure measured in the spray loop 30a by the measuring system 4b has reached a determined value, following the priming step, to immediately initiate the spraying step.
• the spraying step can begin without delay since the spray loop 30a, in particular the nozzles 2a, is supplied with slurry 1b.
• the pressure measuring system can be, for example, a pressure gauge. In practice, it is the operator who manually controls the start of the spraying step, at the end of the priming step. Alternatively, the spraying step can be triggered automatically as soon as the spray boom 2 is fully initiated.
• the number of air vents 7 can vary depending on the width of the ramp 2.
• the present invention can provide at least one air vent 7 by parts of ramp.
• the installation of several air traps 7 in parts makes it possible to reduce the priming time since the air is expelled more quickly from the spray loop 30a.
• the air trap (s) 7 thus make it possible to start the sprayer boom 2 without delay and at the correct concentration of the product at the outlet of the nozzles 2a.
• an air vent 7 can be mounted on the central part of the spray boom 2 and an air vent 7 can be mounted on each side part of the latter.
• each air vent 7 can be placed between two neighboring nozzles 2a ( Figure 1).
• the or one of the air bleeders 7 can be placed in the center.
• the spraying step follows the priming step, its purpose is to spread the mixture 1b on the soil or plants at a determined dose.
• the control device allows the constant application of the 1b mixture per unit area regardless of variations in the speed of the sprayer. This regulating device also depends on the longitudinal distribution precision, that is to say that the dose over the entire width of the sprayer must be regular.
• spraying is then stopped momentarily by closing the nozzles 2a.
• the controller 9 can manage the closing and opening of the nozzles 2a automatically using a geolocation system well known from the prior art. The closing and opening of the nozzles 2a can also be controlled manually by the user.
• the method according to the present invention can consist, in the spraying step, from the sprayer further comprising a turbine system 8 mounted in the spray loop 30a, in an anti-clogging step, to close the nozzles 2a to temporarily stop the spraying and to control the activation of the turbine system 8 to set in motion the slurry 1b present in the spray loop 30a and to circulate it continuously (arrows in spray loop 30a) in Figure 3) by means of said turbine system 8 in said spray loop 30a.
• the turbine system 8 is mounted in the loop of spray 30a.
• the continuous movement of the mixture 1b in the spray loop 30a makes it possible to prevent the particles in suspension, coming from the active product (s), being deposited in the spray loop 30a by sedimentation and causing the clogging of the nozzles. 2a. Furthermore, the continuous circulation of the slurry 1b in the spray loop 30a makes it possible to agitate and maintain the dosage. As soon as the nozzles 2a open, spraying resumes and the turbine system 8 is stopped / deactivated.
• the method according to the present invention may consist, from the sprayer further comprising a pressurized air injection system 6, continued in the spraying step, in a step of emptying the spray boom 2 with air and more particularly the spray loop 30a, in controlling the activation of the air injection system 6 in order to inject air 'air under pressure in the main pipe 3a so as to evacuate, through the nozzles 2a, the mixture 1b present in the spray boom 2.
• This step makes it possible to expel the mixture 1b remaining in the spray loop 30a as soon as the pump 3b is defused.
• This pressurized air emptying step makes it possible to reduce the number of rinses or the amount of rinsing liquid, if necessary.
• the pressurized air is injected into the main line 3a downstream of the pump 3b.
• a valve can be arranged downstream of the pump 3b to prevent pressurized air from flowing into the pump 3b.
• the pressurized air injection system 6 capable of injecting pressurized air into the main pipe 3a thus makes it possible to perform a complete emptying of the sprayer boom 2 since the mixture 1b is expelled by the air under pressure through the nozzles 2a. It may preferably include an air compressor 6a, an air reserve 6b and a solenoid valve 6c.
• the solenoid valve 6c is preferably arranged in the main pipe 3a, upstream of the spray loop 30a and downstream of the pump 3b.
• the method may consist, following the step of emptying in the air, in a rinsing step, in rinsing the spray loop 30a and, where appropriate, the tank 1 and in discharging the diluted volume through the nozzles. 2.
• the objective is to minimize the volume of slurry 1b remaining in the sprayer. If the quantity of mixture 1 b prepared or contained in tank 1 has been calculated correctly, only a little mixture 1 b remains to be removed at the bottom tank 1 and the rinsing step which follows the spraying step will be shorter. It is customary to dilute the bottom of tank 1 with a large volume of water to rinse tank 1. This diluted volume (slurry + carrier liquid) also circulates throughout the spray boom and is evacuated by means of nozzles 2a on the field. This operation makes it possible to eliminate the spray residues before they dry to reduce the risk of clogging at the level of the tank 1 and of the spray boom 2a.
• the rinsing is carried out mainly with the carrier liquid 1a from the tank 1 if the latter contains the carrier liquid 1a, without active product (s), or else from an additional tank, not shown in the appended figures, dedicated to rinsing and then containing clear water or an appropriate rinsing liquid.
• the additional rinsing tank can be connected to the main pipe 3a by means of an additional valve system capable of being controlled to supply the main pipe 3a with rinsing liquid.
• the method may consist, following the step of emptying with air, in a rinsing step, in expelling the pressurized air present in the spray loop 30a either with the carrier liquid 1 a contained in the tank 1 or with a rinsing liquid contained in an additional tank, not shown in the appended figures, which can also be included in the sprayer, and to evacuate the air under pressure using the air vent (s) 7.
• the method may further consist, following the rinsing step, in carrying out a new step of emptying the sprayer boom 3a with air using the air injection system 6 by controlling the activation of the air injection system 6 to inject pressurized air into the main pipe 3a so as to evacuate, through the nozzles 2a, the carrier liquid 1a or the diluted volume of slurry present in the spray loop 30a.
• This new air draining step also has the effect of drying the spray loop 30a.
• the method can consist from a sprayer, according to the present invention, the nozzles 2a of which are arranged in at least one row, to control, using the control device 9, the gradual closing of the nozzles 2a or their supply, from one nozzle 2a to another, preferably starting from the ends (FIG. 5) of each row of nozzles 2a .
• the method according to the present invention can provide for controlling, firstly, the closing of the first nozzle 2a located at each end of the row, then, in a second step (figure 5), the closing of the first nozzle 2a and of the second nozzle 2a located at each end of the row and so on until the closing of all the nozzles 2a of the row or of the row concerned of the sprayer boom 2.

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• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Environmental Sciences (AREA)
• Pest Control & Pesticides (AREA)
• Wood Science & Technology (AREA)
• Zoology (AREA)
• Insects & Arthropods (AREA)
• Water Supply & Treatment (AREA)
• Soil Sciences (AREA)
• Special Spraying Apparatus (AREA)
• Catching Or Destruction (AREA)
• Application Of Or Painting With Fluid Materials (AREA)
• Nozzles (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=71894898

Family Applications (1)

Country Status (5)

Family Cites Families (3)

• 2020
  • 2020-03-19 FR FR2002696A patent/FR3108232B1/fr active Active
• 2021
  • 2021-03-17 AU AU2021238641A patent/AU2021238641A1/en active Pending
  • 2021-03-17 BR BR112022018588A patent/BR112022018588A2/pt unknown
  • 2021-03-17 WO PCT/EP2021/056795 patent/WO2021185893A1/fr unknown
  • 2021-03-17 EP EP21712495.7A patent/EP4120817A1/de active Pending

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