EP2979765A1 - Unité de soupape à pulvérisation agricole - Google Patents

Unité de soupape à pulvérisation agricole Download PDF

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Publication number
EP2979765A1
EP2979765A1 EP14178745.7A EP14178745A EP2979765A1 EP 2979765 A1 EP2979765 A1 EP 2979765A1 EP 14178745 A EP14178745 A EP 14178745A EP 2979765 A1 EP2979765 A1 EP 2979765A1
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EP
European Patent Office
Prior art keywords
valve
agricultural
magnet
holding magnet
valve body
Prior art date
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Granted
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EP14178745.7A
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German (de)
English (en)
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EP2979765B1 (fr
Inventor
Reinhold Schulte
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Individual
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Individual
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Priority to ES14178745.7T priority Critical patent/ES2622078T3/es
Priority to EP14178745.7A priority patent/EP2979765B1/fr
Priority to PL14178745T priority patent/PL2979765T3/pl
Publication of EP2979765A1 publication Critical patent/EP2979765A1/fr
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Publication of EP2979765B1 publication Critical patent/EP2979765B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
    • B05B12/087—Flow or presssure regulators, i.e. non-electric unitary devices comprising a sensing element, e.g. a piston or a membrane, and a controlling element, e.g. a valve

Definitions

  • the present invention relates to an agricultural injection valve assembly, an agricultural injection valve assembly formed with such an agricultural injection valve assembly, and a method of operating such an agricultural injection valve assembly.
  • Agricultural syringe valve units and agricultural syringe valve devices are used for the control or regulation (in the context of the present invention also subsumed under "control") of the application of an agricultural sprayer of any purpose and of any type.
  • an agricultural syringe is used to dispense a fluid in agriculture or fruit or vegetable cultivation, wherein the fluid may be, for example, water, fertilizer, an insecticide or any other fluid or fluid mixture.
  • Agricultural sprayers are used individually for the application of an agricultural fluid to a limited area or with a plurality of agricultural sprayers, which may for example be juxtaposed to one or more spray bars.
  • the application of the fluid should only take place in the actually relevant agricultural areas and also here only with a required volume flow.
  • the application of the fluid in the edge regions of the field for example when cornering, to be interrupted. It is also possible that in sections of the spray bar that run over no plants or no crop, the agro-spraying assigned to these sections should be temporarily switched off.
  • a central agricultural spray valve unit in a supply line to all agricultural sprayers can be brought into a blocking position, requires the deactivation of sub-sections of a spray bar, which is segmented formed a central line of the spray bar to which the agricultural sprayers are connected with parallel segments, which are separately shut off over the respective segments associated agricultural spray valve units.
  • an activation of an agricultural injection valve unit can also be carried out in addition to an open position and a closed position into at least one intermediate position, in particular continuous intermediate positions, in order to be able to control the application as required.
  • a change in a discharge rate with required intermediate positions of the agricultural spray valve unit may be desirable depending on the agricultural application, an expected drift of spray droplets due to a wind, the speed of the sprayer, the desired size of the spraying area of the agricultural sprayer, the height of a spray bar above the ground , a desired drop size or a desired spectrum of drop sizes, the desired fluidic flow, a desired angle of a spray cone, and the like. It is also possible that a control of the application rate should be based on information from a global positioning system, for example, depending on the position on the field, the volume flow of the application is predetermined, for example, based on position-related harvest data of the last harvest.
  • Valve unit in training as a pulse-modulated system see. DE 10 2009 001 532 A1 and DE 696 25 914 T2 ), wherein in the latter case, the time-average volume flow can be varied over the so-called "duty cycle" and the ratio of the short-term opening times of the valve to closing times of the valve.
  • Agricultural injection valve units can be designed as directly controlled solenoid valves, in which, for example, a valve body designed as a valve body, which comes into contact with a valve seat in a closed position, is directly mechanically connected to an electromagnetic actuator.
  • the electromagnetic actuators are formed with a coil and an armature moving inside the coil, wherein the movable armature is coupled to the valve body.
  • the electromagnetic actuator must generate an opening force that is dependent on the size of the valve disk and the pressure difference between a primary line and a secondary line of the agricultural spray valve unit (see the non-prepublished patent application DE 10 2013 101 460.7 ).
  • the publication DE 10 2011 000 921 B3 discloses an agricultural injection valve unit, which is designed as a passive overflow valve without electronic control options.
  • the size and geometry of a crossover cross section between the primary line and the secondary line is dependent on the position of a valve body.
  • the valve body is formed in this case with a weighing piston.
  • the weighing piston has a first piston surface, which is permanently exposed to the pressure in the primary line.
  • the weighing piston has a second piston surface acting opposite to the first piston surface, which is permanently exposed to the pressure in the secondary line.
  • EP 2 227 949 A1 discloses the basic structure of a field sprayer with the entire fluidic circuit and the arrangement of several agricultural spray valve units on a spray bar.
  • the invention relates to an agricultural injection valve unit, which is a primary line, which is supplied in particular via a pump with a pressurized fluid, and a secondary line, via which (in particular with a downstream nozzle or injection unit of an agricultural sprayer) fluid is discharged.
  • a valve body and a valve seat are arranged, which form a valve with a dependent on the relative position between the valve body and valve seat cross-over cross section between the primary line and the secondary line.
  • the valve body is acted upon by a spring against the valve seat, whereby a closed position (or at least one operating position with a reduced crossover cross section) can be brought about.
  • the valve body can be acted upon by the pressure in the primary line in the opening direction.
  • the valve body is at a threshold value of the pressure in the primary line from the valve seat Moved away (where the threshold may also be dependent on other variables such as the pressure in the secondary line).
  • the valve formed with the valve body and the valve seat ensures a kind Studentsströmfunktion, which can be used, for example, so that with a commissioning of the agricultural sprayer and thus the agro-valve unit initially by the spring a closed position of the valve is guaranteed.
  • this closed position of the valve is initially maintained until a threshold value of the pressure in the primary line is exceeded.
  • valve opens at least partially and results in an enlarging crossover cross section, via which the fluid can flow from the primary line into the secondary line, from which then the discharge can take place.
  • the described overflow function can thus on the one hand enable a passive operation of the agricultural spray valve unit, which may also be the case without any electronic control.
  • an adhesion magnet is provided in the agitating valve unit, via which the valve body is movable.
  • an electromagnet is understood to mean an electromagnet in which no mechanical movement conversion takes place. Rather, the electric holding magnet has a coil winding and a core not movable relative to the coil winding.
  • the electric holding magnet has a coil winding and a core not movable relative to the coil winding.
  • lifting magnets are also referred to as "lifting magnets", but which are used as load lifting magnets for another purpose, namely for holding loads, for example, for transport purposes and with possibly larger dimensions.
  • the adhesive magnet is, in particular, a pot magnet which is substantially rotationally symmetrical with respect to a longitudinal axis.
  • the core of the holding magnet is formed in the half-longitudinal section in the shape of a horizontal U with arrangement of the coil winding between the two side legs of the U (see also Fig. 1 ).
  • the radially inner side leg of the U can be formed by a continuous cylindrical inner core of the magnet.
  • the metallic "adhesive" object is in the adhesive or holding position. For such closed by the object to be held U results in a closed magnetic flux, which allows the holding of the object to be held even at low electrical power consumption.
  • the holding magnet By the use according to the invention of the holding magnet can thus hold an object, here for example a movable valve body or a movable valve seat or a mechanically coupled thereto body in an operating position of the valve with a possibly drastically reduced power consumption relative to an electromagnet with arranged inside movable Anchor.
  • Magnets used in the invention can be purchased inexpensively as purchased parts with various gradations of electrical power consumption and the characteristics of the force generated between the holding magnet and the object to be held depending on the distance. Furthermore, such a magnet can reliably ensure the adhesive operating position even with small electrical power supply.
  • a design of such holding magnets can be made in accordance with the VDE 0580 directive.
  • the magnet is not used exclusively for the adhesion, ie the maintenance of the previously described closed flow. Rather, in the context of the invention, the holding magnet is used over a certain setting range in order to generate a force inducing a movement of the valve body. According to the invention, a direct electromagnetic control is used with the holding magnet, without requiring an electropneumatic feedforward control.
  • the holding magnet is arranged such that the holding magnet acts on the valve body in the closing direction with an energization. This has the consequence that without energizing the magnet, the passive overcurrent function of the agricultural spray valve unit is effective. In addition, with energization of the magnet, despite a difference between the pressures in the primary line and in the secondary line, which in itself results in an opening of the valve, the valve can be closed or remain.
  • the magnet is arranged in such a way that is acted upon by energization of the magnet of the valve body in the opening direction.
  • the overflow function can be triggered with energization of the magnet, even if the pressure difference between the pressure in the primary line and the secondary line is not sufficient per se to convert the valve in the open position.
  • valve body can be acted upon either in the closing direction or in the opening direction, resulting in extended control options.
  • the magnet generates a force acting on the valve body with energization, while the magnet exerts no force on the valve body without energization.
  • the magnet is formed with a permanent magnet.
  • the permanent magnet exerts on the valve body a permanent magnetic force, which acts independently of the electrical loading of the holding magnet.
  • an electromagnetic force can be brought, which is opposite to the permanent magnet force.
  • the adhesive exerts an electromagnetic force on an armature.
  • the armature may be formed by the valve body itself, be rigidly connected thereto or mechanically coupled via a suitable transmission mechanism.
  • the armature can be designed specifically with regard to its geometry and its material in order to produce the desired characteristic of the electromagnetic force to be generated by the magnet and / or permanent magnetic force, also over the required travel.
  • a spring and / or damping element is interposed in the power flow between the magnet and the valve seat.
  • This spring and / or damping element can feathers or dampen any impact of the armature on the magnet, whereby unwanted noise can be avoided and damage to the armature of the magnet and other components such as a shock-sensitive control unit can be avoided.
  • a spring and / or damping element is arranged in the region of the contact surface between the magnet and the armature. However, if this spring and / or damping element is located in the central area between the armature and the magnetic flux holding magnet, the magnetic flux may be disturbed.
  • the spring and / or damping element is integrated in the mechanical transmission path between the armature and the valve body. It is also possible that the spring and / or damping element is arranged in the region of the contact surface between the valve body and the valve seat on the valve body or the valve seat.
  • a possible spring and / or damping element can also make a tolerance compensation and avoid a double fit, so that regardless of manufacturing tolerances for voltage applied to the magnet armature actually a closed position of the valve is reached. Depending on manufacturing deviations within the tolerance range so that the spring and / or damping element is biased differently strong in the closed position. If the manufacturing tolerances are known, the fluctuation range of the contact pressure of the valve disk on the valve seat can be predetermined via the selected rigidity of the spring and / or damping element.
  • valve seat For the spatial arrangement of the valve body, the valve seat, the armature and there magnets there are basically many possibilities.
  • the valve seat between the armature and the holding magnet on the one hand and the valve body on the other hand (in a viewing direction in the direction of actuation of the valve body) is arranged.
  • a portion of the valve body or a coupling element extends through a valve disk of the valve body through the valve seat for the purpose of coupling the armature, resulting in changed space conditions.
  • this embodiment also allows that with energization of the Holding magnets a force is exerted on the valve body, which is oriented in the closing direction.
  • the agricultural syringe valve unit is formed with a coupling region or a coupling plane, in which the primary line and the secondary line open and in which the valve body extends with adjacent arrangement of the valve seat.
  • the magnet is only used to influence the valve position depending on the electrical impingement.
  • the magnet is used multifunctional, in which this is used beyond the function of generating a force to influence the operating position of the valve also as a sensor which (directly or indirectly) detects the operating position of the valve body or of the valve formed with this ,
  • This embodiment is based on the finding that the position of the valve body correlates with the size of the distance of the armature from the magnet. Depending on the size of the distance between the armature and the magnet, however, the magnetic conductivity, the magnetic resistance and the flux density change.
  • the electromagnetic variables of the magnet change depending on the distance of the armature from the magnet. For example, depending on the distance, there is a change in the current in the holding magnet, the voltage in the holding magnet, the impedance of the holding magnet and / or the phase shift. Based on the physical conditions, such a change can be converted or converted via a map in a distance of the armature of the magnet, thus ultimately a sensor for the operating position of the valve body is formed.
  • the agricultural syringe has a flat, in particular standardized coupling region, via which on the one hand the primary line is supplied with the pressurized fluid and in which on the other hand the secondary line opens for the purpose of downstream application of the fluid.
  • the agricultural syringe valve unit has a substantially planar coupling region. The primary line and the secondary line open into this coupling region, which can (fluidly) on the one hand fluid from the supply of the other component to the primary line of the agricultural spray valve unit and on the other hand fluid from the secondary line of the agricultural spray valve unit to the discharge line of the other Can reach the device.
  • valve body extends into the coupling region, wherein it is even possible that with a movement of the valve body, the valve body partially enters the discharge line of the other component, which then has to have a correspondingly large cross-section. It is also possible that, when the agricultural injection valve units is not yet mounted with the adjacent unit, components can be introduced into the interior of a housing of the agricultural spray valve unit via the coupling area and / or can be mounted inside the housing of the agricultural spray valve unit.
  • the coupling region may be formed both with a separating and / or guide wall and a valve seat body, wherein preferably the separating and / or guide wall and the valve seat body limit the coupling region.
  • a flow cross section of the primary line is limited both by the separating and / or guide wall and by the valve seat body.
  • the separating and / or guide wall and / or the valve seat body has a groove which is closed by the other component of the separation and / or guide wall and the valve seat body in cross section.
  • an agricultural spray valve device which has an agricultural spray valve unit, as has been explained above. It is proposed that the agricultural syringe valve device is equipped with a control unit.
  • the control unit has control logic by means of which the holding magnet can be operated as a sensor for an operating position of the valve body.
  • a characteristic is stored in the control unit or an associated memory unit for a change of an impedance or a phase shift or another electrical or magnetic quantity of the distance of the armature from the magnet.
  • the control logic generates an electrical test signal, in particular an alternating voltage, which or which acts on the holding magnet.
  • control logic is adapted to evaluate a change in impedance, phase shift or other detected magnitude depending on the distance of the armature from the magnet and a binary signal (closed / open), a digital signal or an analog signal for the distance of Ankers of the magnet to produce.
  • control unit equipped with this control logic is integrated in the agitating valve unit, as a module from the outside of a housing of the agricultural syringe valve unit is attached or disposed externally of the agricultural syringe valve unit with communication between the control unit and the agricultural syringe valve unit via a unidirectional or bidirectional cable, a wiring harness o It is possible that a common control unit is responsible for several agricultural syringe valve units, which control unit may be integrated in one of the agricultural syringe valve units or may be provided as a module on the housing of the agro-syringe valve unit or as a decentralized control unit which may then be spaced from the agricultural syringe valve units.
  • a further solution of the object underlying the invention is given by a method for operating an agricultural syringe valve device of the type described above.
  • the control device generates with suitable control logic, depending on the desired flow through the agricultural syringe valve unit, an electrical application signal for the magnet, which leads to a force acting on the valve body, which influences an operating position of the valve body.
  • the electrical Beauftschungssignal is designed as a binary Beaufschlagungssignal by means of which either the open position or the closed position can be brought about.
  • the electrical loading signal can generate graduated or continuous forces of the holding magnet, by means of which one, several or continuous intermediate positions of the valve can be brought about.
  • the electrical application signal can be controlled or regulated by the control device, in particular using the distance of the armature from the adhesion magnet determined by the adhesion magnet in its function as a sensor.
  • control unit evaluates a magnetic flux which depends on the distance of the armature from the holding magnet, as explained above, for example by detecting and evaluating an impedance, a phase shift or the like can take place. The evaluation is done to determine the distance of the armature from the magnet.
  • the control unit In a preferred embodiment of the method according to the invention, the control unit generates a non-stationary electrical test signal (which is in particular a dynamic test signal with a preferably periodically changing sign, such as, for example, an alternating voltage). This test signal is applied to the magnet.
  • the control unit determines the distance of the armature from the holding magnet via a change in the current in the holding magnet, the voltage in the holding magnet, the impedance of the holding magnet and / or a phase shift in the holding magnet depending on the distance of the armature from the holding magnet.
  • Fig. 1 shows a section of an agricultural sprayer 1 in which a component 2 is connected via a union nut 3 with an agricultural spray valve unit 4.
  • the component 2 has a supply line 5, which is supplied by a pump with a pressurized fluid, and a discharge line 6, which is connected to a discharge opening or a spray and / or nozzle unit for discharging the fluid.
  • the agricultural injection valve unit 4 has a substantially planar coupling region 7, via which the supply line 5 is connected to a primary line 8 of the agricultural spray valve unit 4 and the discharge line 6 is connected to a secondary line 9 of the agricultural spray valve unit 4 under sealing.
  • the coupling region 7 is oriented transversely to a longitudinal axis 10 of the agricultural spray valve unit 4 and arranged radially inward of the union nut 3.
  • the agricultural injection valve unit 4 has a valve 11, which is designed here as an overflow valve 12. Furthermore, the agricultural injection valve unit 4 has an actuator 13.
  • the valve 11 has an insert 14, which is fixedly held in a housing 19 of the agricultural spray valve unit 4 and forms a valve seat 15.
  • the insert is formed in two parts with a separating and / or guide wall 16 and a valve seat body 17.
  • the tennis and / or guide wall 16 radially outwardly forms a circumferential annular collar 18.
  • the annular collar 18 is connected via the union nut 3, which is screwed radially inwardly lying with the component 2 and a radially outwardly oriented collar of the housing 19 of the agricultural injection valve unit 4 overlaps between end faces of the component 2 and the housing 19 of the agricultural injection valve unit 4th clamped, whereby the separating and / or guide wall 16 is fixed.
  • a seal 20 may be interposed, which seals the supply line 5 and the primary line 8 to the outside in the coupling region.
  • the separating and / or guide wall 16 has an in Direction of the longitudinal axis 10 oriented recess 21, in which the valve seat body 17 is received to form the primary line 8.
  • a further sealing element 20 is clamped between the valve seat body 17 and the component 2 radially inwardly of the supply line 5 and the primary line 8.
  • Both the tennis and / or guide wall 16 and the valve seat body 17 have a continuous recess 22, 23 through which a valve body 24 extends.
  • valve body 24 is guided with respect to a movement in the direction of the longitudinal axis 10 in an opening direction 25 and a closing direction 26 through the recess 22.
  • a sealing element 27 which acts between the valve body 24 and the tennis and / or guide wall 16.
  • the dimension of the recess 23 is greater than the cross section of the valve body 24 in which extending through the recess 23 portion.
  • the valve body 24 forms a valve disk 28 in the end region facing the component 2, which is arranged in the coupling region 7.
  • On the valve seat 15 side facing the valve plate 28 carries a spring and sealing element 29.
  • the spring and sealing element 29 is formed with a coating of the valve plate 28 with an elastomeric material.
  • the valve seat 15 is formed by the recess 23 delimiting the valve plate 28 facing paragraph of the valve seat body 17, since the diameter of the recess 23 is smaller than the outer diameter of the valve disk 28.
  • a spring 30 a On the valve body 24 acts in the closing direction, a spring 30 a.
  • a spring base of the spring 30 is supported on the separating and / or guide wall 16, while the other Federfußyak the spring 30 is supported on the valve body 24, here indirectly with the interposition of an armature 31st
  • the armature 31 is in the form of a horizontal T, wherein the horizontal leg of the T forms an anchor portion 32 which is oriented vertically to the longitudinal axis 10, and the vertical leg of the T forms a coaxially to the longitudinal axis 10 oriented mounting portion 33.
  • the valve body 17 is screwed with the valve plate 28 facing away from the end portion in the fastening part 33 of the armature 31.
  • a kind H is formed in a simplified manner, wherein the anchor part 32 forms the left vertical leg of the H, the horizontal leg of the H formed by the fastening part 33 and a part of the valve body 24 is and the right vertical leg of the H, which is formed much shorter than the formed by the anchor part 32 left vertical leg of the H, the valve plate 28 is formed.
  • the insert 14 is penetrated in the region of the recesses 22, 23 of the horizontal leg of the H.
  • the secondary line 9 is here formed radially outwardly of the valve disk 28 and in flow from the supply line 5 to the discharge line 6 for open valve 11 downstream of the crossover cross section between the valve plate 28 and the valve seat 15.
  • the supply line 5 has a cross section such that the valve plate 28 can partially enter the supply line 5 with a movement in the opening direction 25.
  • the operating position of the valve 11 can be influenced via the actuator 13.
  • This has an adhesion magnet 34, which is shown only schematically in the figures.
  • the magnet 34 does not have an armature, but is formed with a rigid core 35, in which windings of a coil 36 are integrated.
  • Adhesive or holding position which correlates with the closed position of the valve 11, is the armature 31 with the end facing away from the insert 14 on the end face of the core 35 of the holding magnet 34, which (apart from the parting line between the core 35 and the anchor part 32) results in a closed magnetic flux through the metallic core 35 and the anchor part 32 around the semi-longitudinal section of the coil 36.
  • the valve 11 With a relatively small electrical power consumption of the coil 36, the valve 11 can thus be kept in its closed position, independently of the pressure in the supply line 5 and the primary line 8. If, however, the valve 11 is in the open position according to Fig. 2 , an energization of the holding magnet 34 can be used to move the armature 31 in the closing direction 26 to the holding magnet 34 until the valve 11 has reached its closed position and the anchor member 32 abuts against the core 35 of the magnet 34. For the movement of the armature 31 from the open position, a higher electrical loading of the coil 36 is required as a result of the gap 37 between the anchor member 32 and the core 35 as in the closed position, in which the gap 37 is closed.
  • the magnet 34 is integrated into the interior of the housing 19.
  • the magnet 34 is bolted to a transverse to the longitudinal axis 10 oriented wall 38 of the housing 19.
  • a mounting of the holding magnet 34, the armature 31, the insert 14 and the valve body 24 takes place in this order from the side facing the component 2 in the mounted state.
  • a cable 39, via which the electrical charging of the coil 36 takes place, is led out of the housing 19 through a recess 40 of the wall 38.
  • the valve body 24 is formed as a kind of screw, wherein the valve plate 28 forms the screw head.
  • the valve disk 28 forms an engagement surface for a tool, in particular a screwdriver, which allows the valve body 24 to be screwed to the armature 31.
  • the agricultural injection valve unit 4 is simply a conventional passive overflow valve 12. With actuation of the magnet 34, a closed position of this overflow valve 12 can be forced.
  • the power consumption of the holding magnet 34 is preferably 1 to 5 watts, in particular 2 to 3 watts.

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  • Magnetically Actuated Valves (AREA)
  • Catching Or Destruction (AREA)
EP14178745.7A 2014-07-28 2014-07-28 Unité de soupape à pulvérisation agricole Active EP2979765B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES14178745.7T ES2622078T3 (es) 2014-07-28 2014-07-28 Unidad de válvula para pulverización agrícola
EP14178745.7A EP2979765B1 (fr) 2014-07-28 2014-07-28 Unité de soupape à pulvérisation agricole
PL14178745T PL2979765T3 (pl) 2014-07-28 2014-07-28 Jednostka zaworowa opryskiwacza rolniczego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14178745.7A EP2979765B1 (fr) 2014-07-28 2014-07-28 Unité de soupape à pulvérisation agricole

Publications (2)

Publication Number Publication Date
EP2979765A1 true EP2979765A1 (fr) 2016-02-03
EP2979765B1 EP2979765B1 (fr) 2017-01-11

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EP14178745.7A Active EP2979765B1 (fr) 2014-07-28 2014-07-28 Unité de soupape à pulvérisation agricole

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EP (1) EP2979765B1 (fr)
ES (1) ES2622078T3 (fr)
PL (1) PL2979765T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020035443A1 (fr) 2018-08-17 2020-02-20 Reinhold Schulte Unité de soupape pour pulvérisateur agricole et dispositif de soupape pour pulvérisateur agricole
EP4397182A1 (fr) 2023-01-06 2024-07-10 Reinhold Schulte Système d'épandage de fluide agricole

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3646725B1 (fr) 2018-11-01 2024-05-08 Reinhold Schulte Dispositif d'épandage agricole et son procédé de fonctionnement
EP3821985B1 (fr) 2019-11-18 2023-08-23 Reinhold Schulte Unité de soupape de pulvérisation agricole, dispositif de pulvérisation agricole, dispositif d'épandage agricole et procédé de fonctionnement d'une unité de soupape de pulvérisation agricole
EP4080315B1 (fr) 2021-04-23 2023-12-06 IWN GmbH & Co. KG Procédé de fonctionnement d'un dispositif de pulvérisation agricole et dispositif de pulvérisation agricole
EP4147786B1 (fr) 2021-09-08 2024-05-15 Reinhold Schulte Unité de soupape de pulvérisation agricole et dispositif de pulvérisation agricole

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69625914T2 (de) 1995-09-15 2003-11-20 Capstan Inc System zur unabhängigen steuerung vom durchfluss und von der tropfengrösse in einer sprüheinrichtung
EP2227949A1 (fr) 2009-03-13 2010-09-15 Reinhold Schulte Procédé de fonctionnement d'un dispositif d'extraction agraire
DE102011000921B3 (de) 2011-02-24 2012-07-05 Reinhold Schulte Agrarspritzen-Überströmventil
DE102013101460B3 (de) 2013-02-14 2014-02-13 Reinhold Schulte Agrarspritzen-Ventileinheit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69625914T2 (de) 1995-09-15 2003-11-20 Capstan Inc System zur unabhängigen steuerung vom durchfluss und von der tropfengrösse in einer sprüheinrichtung
EP2227949A1 (fr) 2009-03-13 2010-09-15 Reinhold Schulte Procédé de fonctionnement d'un dispositif d'extraction agraire
DE102009001532A1 (de) 2009-03-13 2011-08-04 Schulte, Reinhold, 33106 Agrare Ausbringeinrichtung für das Ausbringen von Fluiden
DE102011000921B3 (de) 2011-02-24 2012-07-05 Reinhold Schulte Agrarspritzen-Überströmventil
DE102013101460B3 (de) 2013-02-14 2014-02-13 Reinhold Schulte Agrarspritzen-Ventileinheit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020035443A1 (fr) 2018-08-17 2020-02-20 Reinhold Schulte Unité de soupape pour pulvérisateur agricole et dispositif de soupape pour pulvérisateur agricole
CN112601614A (zh) * 2018-08-17 2021-04-02 R·舒尔特 农业喷洒-阀单元和农业喷洒-阀装置
RU2764551C1 (ru) * 2018-08-17 2022-01-18 Райнхольд Шульте Клапанный блок аграрного распыления и клапанное устройство аграрного распыления
CN112601614B (zh) * 2018-08-17 2024-03-19 R·舒尔特 农业喷洒-阀单元和农业喷洒-阀装置
EP4397182A1 (fr) 2023-01-06 2024-07-10 Reinhold Schulte Système d'épandage de fluide agricole

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EP2979765B1 (fr) 2017-01-11
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