WO2023171366A1 - Dispositif de pulvérisation de liquide - Google Patents

Dispositif de pulvérisation de liquide Download PDF

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Publication number
WO2023171366A1
WO2023171366A1 PCT/JP2023/006282 JP2023006282W WO2023171366A1 WO 2023171366 A1 WO2023171366 A1 WO 2023171366A1 JP 2023006282 W JP2023006282 W JP 2023006282W WO 2023171366 A1 WO2023171366 A1 WO 2023171366A1
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WO
WIPO (PCT)
Prior art keywords
tank
liquid
moving means
spraying
remaining amount
Prior art date
Application number
PCT/JP2023/006282
Other languages
English (en)
Japanese (ja)
Inventor
卓裕 成勢
克文 近藤
寛智 丸山
明日旭 河野
Original Assignee
株式会社レグミン
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社レグミン filed Critical 株式会社レグミン
Priority to JP2023512804A priority Critical patent/JP7403905B1/ja
Publication of WO2023171366A1 publication Critical patent/WO2023171366A1/fr
Priority to JP2023206182A priority patent/JP2024019339A/ja

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass

Definitions

  • the present invention relates to a liquid dispersion device.
  • Patent Document 1 a chemical solution tank containing agricultural chemicals is arranged at the top of the vehicle body. Therefore, there is a problem that the center of gravity of the pesticide spraying vehicle becomes high and the running of the pesticide spraying vehicle becomes unstable.
  • an object of the present invention is to provide a liquid spraying device that can realize stable running.
  • the liquid spraying device of the present invention is a liquid spraying device that moves along a striped region in which an object to be sprayed exists, and includes first moving means and second moving means located on both sides of the striped region. a first tank and a second tank that contain a liquid; and a spraying mechanism that has a spraying section that discharges the liquid to the object to be sprayed;
  • the second tank is provided on the side of the first moving means of the apparatus main body, and the second tank is provided on the side of the second moving means of the apparatus main body.
  • the apparatus main body includes a first leg part that supports the first moving means, a second leg part that supports the second moving means, and a connecting part that connects the first leg part and the second leg part.
  • the first tank and the second tank may be provided such that a lower limit of the liquid level of the liquid contained therein is below the connecting portion.
  • the first tank and the second tank may be provided such that the upper limit of the liquid level of the liquid contained therein is below the connecting portion.
  • the first tank may be provided on the first leg, and the second tank may be provided on the second leg.
  • the spreading section is arranged between the first moving means and the second moving means, and the first tank and the second tank have a lower limit of the liquid level of the liquid contained therein than the spreading section. It may be provided downward.
  • the spreading section is configured to be movable up and down, and the first tank and the second tank are configured such that the lower limit of the liquid surface position of the stored liquid is lower than the spreading section located at the upper limit within a movable range. may be provided.
  • the first tank or the second tank is provided in an area above the first moving means or the second moving means and in an area with a width in which the first moving means or the second moving means runs. It may be.
  • the distance between the first moving means and the second moving means may be changeable.
  • the dispersion mechanism is configured to transfer the liquid in the first tank to the second tank through a connecting channel that interconnects the first tank and the second tank, and the connecting channel, or , a circulation pump configured to transfer at least one of the liquid in the second tank to the first tank.
  • the dispersion mechanism includes a remaining amount detection means for detecting the remaining amount of the liquid in the first tank and the second tank, and a control section that operates the circulation pump based on the detection result of the remaining amount detection means. , may further include.
  • the control unit When the difference between the remaining amount of the liquid in the first tank and the remaining amount of the liquid in the second tank exceeds a predetermined threshold, the control unit operates the circulation pump, and controls the first tank and the second tank.
  • the liquid may be transferred from one of the second tanks having a large remaining amount to the other tank.
  • the spraying mechanism includes a flow path that connects the first tank and the spraying section and also connects the second tank and the spraying section, and a flow path that connects the first tank and the spraying section so that only the liquid in the first tank is sprayed.
  • the device may further include a switching mechanism for switching to either the released connection state or the released connection state.
  • the control unit determines the remaining amount of the liquid in the first tank and the liquid in the second tank based on the difference between the weight of the first tank containing the liquid and the weight of the second tank containing the liquid. It may be determined whether the difference between the amount and the remaining amount exceeds a predetermined threshold.
  • FIG. 2 is a front view showing the configuration of a liquid spraying device.
  • FIG. 2 is a diagram showing a state in which the liquid spraying device of FIG. 1 is traveling in a field.
  • FIG. 2 is a perspective view schematically showing the main body of the liquid dispersion device.
  • FIG. 2 is a right side view showing the configuration of the liquid spraying device.
  • FIG. 3 is a diagram schematically showing the components of the dispersion mechanism. It is a flow chart of an example of operation of a spraying pump based on a detection result of a residual amount detection sensor. It is a flowchart of an example of the operation of the circulation pump based on the detection result of the remaining amount detection sensor. It is a figure which shows typically the component of the dispersion mechanism which is a modification. It is a figure which shows the modification of a device main body.
  • FIG. 2 is a schematic diagram showing an example of a specific configuration of the first tank. It is a schematic diagram for demonstrating another example of a structure
  • a liquid spraying device 1 according to an embodiment of the present invention will be described below with reference to the drawings.
  • terms indicating directions such as “up” and “down” will be used according to the orientation of objects depicted in the drawings, but these terms are used with the intention of limiting the present invention. isn't it.
  • the “up” and “down” directions correspond to the height direction of the liquid dispersion device 1.
  • the “left” and “right” directions correspond to the width direction of the liquid dispersion device 1.
  • FIG. 1 is a front view showing the configuration of the liquid spraying device 1.
  • FIG. 2 is a diagram showing a state in which the liquid spraying device 1 of FIG. 1 is traveling in a field.
  • FIG. 3 is a perspective view schematically showing the device main body 10 of the liquid spraying device 1.
  • FIG. 4 is a side view showing the configuration of the liquid spraying device 1.
  • the liquid spraying device 1 is a device that sprays liquid onto an object to be sprayed while moving along a striped region where the object is present.
  • the objects and liquids to be sprayed are not limited to specific ones, in the following, it will be exemplified that liquids such as agricultural chemicals are sprayed onto crops in a field. Although any agricultural product may be used, vegetables such as green onions are one example.
  • the first tank 41 and the second tank 42 may have different structures, but in this embodiment, the first tank 41 and the second tank 42 are illustrated as having the same structure.
  • the first moving means 21 and the second moving means 22 may have different structures, but in this embodiment, the first moving means 21 and the second moving means 22 are illustrated as having the same structure. do.
  • a plurality of ridges A are provided in the field, and working paths are formed between adjacent ridges A.
  • the ridge A is a striped area where agricultural crops to be sprayed are planted.
  • the device main body 10 is a structure on which various devices constituting the liquid dispersion device 1 are mounted.
  • the device main body 10 may be made of any material, and the device main body 10 may be made of metal or resin, for example.
  • the device main body 10 has a first leg portion 11, a second leg portion 12, and a connecting portion 13. In this embodiment, as an example, the first leg portion 11 and the second leg portion 12 are formed in a mutually symmetrical shape.
  • the first leg portion 11 and the second leg portion 12 are provided, for example, so as to extend in the vertical direction.
  • the first leg 11 is located in the working path on one side of the ridge A
  • the second leg 12 is located in the working path on the opposite side.
  • the first leg portion 11 includes a tank holding portion 11a that holds the first tank 41, and a pump holding portion 11b that holds a spraying pump P1 (details will be described later).
  • the second leg portion 12 includes a tank holding portion 12a that holds the second tank 42, and a pump holding portion 12b that holds a circulation pump P2 (details will be described later).
  • the connecting portion 13 is a structure that connects the first leg portion 11 and the second leg portion 12.
  • the connecting part 13 connects the upper part of the 1st leg part 11 and the upper part of the 2nd leg part 12 as an example.
  • the upper surface of the connecting part 13 may be provided as a placing part on which the components of the liquid dispersing device 1 are placed. Any component may be placed on the placement part, and for example, it may be a reserve tank (not shown) that accommodates the liquid to be sprayed.
  • the liquid spraying device 1 performs a predetermined operation on the crops inside the device main body 10.
  • a work space S is formed.
  • the work space S is, for example, a space in which the liquid spraying device 1 sprays a liquid onto agricultural crops.
  • the work space S may be a work space for reaping agricultural products, for example.
  • the first moving means 21 and the second moving means 22 are, for example, wheels or crawlers. In FIGS. 1, 2, and 4, a crawler is illustrated.
  • the first moving means 21 is supported by the first leg 11
  • the second moving means 22 is supported by the second leg 12 .
  • the distance between the first moving means 21 and the second moving means 22 is set to be longer than the length assumed as the width of the ridge A (the length on both sides of the striped area that is the ridge A), for example. has been done.
  • FIG. 2 shows a state in which the liquid spraying device 1 straddles one ridge A
  • the liquid spraying device 1 may be provided so as to straddle a plurality of ridges A.
  • the liquid spraying device 1 may be provided so that the distance between the first moving means 21 and the second moving means 22 can be changed so that it can accommodate ridges A of various widths.
  • the liquid dispersing device 1 has a variable distance between the first leg portion 11 and the second leg portion 12, so that the distance between the first moving means 21 and the second moving means 22 can be changed. It may be configured such that the distance between the two can be changed.
  • the distance between the first leg 11 and the second leg 12 is, for example, manually changed by an operator.
  • the liquid dispersing device 1 has a distance changing mechanism (not shown) for changing the distance between the first leg 11 and the second leg 12. The distance between the second leg portion 12 and the second leg portion 12 may be changed.
  • Each of the first moving means 21 and the second moving means 22 is operated by a driving force from a drive mechanism (not shown).
  • the drive mechanism has a drive source such as a motor, and operates the first moving means 21 and the second moving means 22 by transmitting power from the drive source to the first moving means 21 and the second moving means 22.
  • a single drive mechanism may be provided, or one drive mechanism may be provided for each of the first moving means 21 and the second moving means 22.
  • Control device 30 A controller 30 controls the operation of the drive mechanism.
  • the control device 30 may, for example, The operation of the drive mechanism may be controlled based on a captured image of a field or the like.
  • the control device 30 controls the operation of the drive mechanism, operates the first moving means 21 and the second moving means 22, and causes the liquid spraying device 1 to travel autonomously.
  • the control device 30 may be provided at any position in the device main body 10, but in FIG. 1, it is provided in the connecting portion 13 as an example.
  • the first tank 41 and the second tank 42 are both tanks that contain chemical solutions such as agricultural chemicals.
  • the first tank 41 and the second tank 42 are, for example, resin tanks, and are independent from each other.
  • the shapes of the first tank 41 and the second tank 42 are arbitrary, but are, for example, rectangular parallelepiped shapes.
  • the shapes of the first tank 41 and the second tank 42 are, for example, height (vertical direction in FIG. 1), width (horizontal direction in FIG. 1), and depth (horizontal direction in FIG. 4). , the shape may be a rectangular parallelepiped with the longest depth.
  • the flow path connecting the first tank 41 and the second tank 42 will be described later with reference to FIG. 5.
  • first tank 41 and the second tank 42 are not limited to being completely independent from each other.
  • the upper part of the first tank 41 and the upper part of the second tank 42 may be connected to each other. That is, although the tank is a single component, a tank having a plurality of mutually independent liquid storage parts may be used.
  • a tank for storing the liquid in the main body of the device In the case of a configuration in which the tank is disposed at the upper part of the device main body 10, the center of gravity of the liquid dispersing device 1 becomes high, and the running of the liquid dispersing device 1 becomes unstable.
  • the first tank 41 is provided on the side of the first moving means 21 of the device main body 10
  • the second tank 42 is provided on the side of the device main body 10.
  • the side of the first moving means 21 refers to the side where the first moving means 21 is present when viewed from the work space S.
  • the side of the second moving means 22 refers to the side where the second moving means 22 is located, which is the opposite side from the first moving means 21 when viewed from the work space S.
  • the first tank 41 and the second tank 42 are provided in the tank holding part 11a of the first leg part 11 and the tank holding part 12a of the second leg part 12, respectively.
  • the first tank 41 and the second tank 42 are, for example, detachably attached to the tank holding part 11a and the tank holding part 12a.
  • the first tank 41 and the second tank 42 are located above the first moving means 21 and the second moving means 22, respectively, and below the connecting portion 13.
  • first tank 41 and the second tank 42 may be arranged in such a manner that a portion of the tank protrudes above the connecting portion 13.
  • first tank 41 and the second tank 42 are provided so that the lower limit of the liquid level of the contained liquid is below the connecting part 13, and the first tank 41 and the second tank 42 are The upper part may protrude above the connecting part 13.
  • first tank 41 and the second tank 42 are provided so that the upper limit of the liquid level of the contained liquid is below the connecting part 13, and the upper part of the first tank 41 and the second tank 42 are connected. It may protrude above the portion 13.
  • “Below the connecting part” specifically refers to the part below the lowest part of the connecting part 13.
  • “The lower limit of the level of the liquid to be accommodated is below the connecting portion” means that the lower end of the liquid storage portion (the area that can accommodate liquid) in the tank is below the lowest part of the connecting portion 13. means.
  • “The upper limit of the liquid level of the stored liquid is below the connecting part” means that the height of the liquid level when a predetermined upper limit amount of liquid is stored in the tank is lower than the lowest part of the connecting part 13. It means that. According to such a configuration, the center of gravity of the liquid spraying device 1 can be lowered compared to a configuration in which the entire tank is disposed at the upper part of the device main body 10.
  • the positions of the first tank 41 and the second tank 42 in the height direction with respect to the device main body 10 are as described above, but the positions of the first tank 41 and the second tank 42 with respect to the device main body 10 in the horizontal direction (width of the liquid spraying device 1 For example, the position of the direction) may be as follows.
  • the first tank 41 or the second tank 42 may be provided in an area with a width in which the first moving means 21 or the second moving means 22 travels, as shown in FIG. That is, the first tank 41 is arranged in such a manner that a part or all of the first tank 41 overlaps the first moving means 21 when the first tank 41 and the first moving means 21 are viewed from above. It is preferable that the Similarly, the second tank 42 is also arranged in such a manner that part or all of the second tank 42 overlaps the second moving means 22 when the second tank 42 and the second moving means 22 are viewed from above. It is preferable that the The width dimension of the tank may be shorter than the width dimension of the moving means, may be approximately the same as the width dimension of the moving means, or may be longer than the width dimension of the moving means.
  • FIG. 5 is a diagram schematically showing the components of the dispersion mechanism 50.
  • the spraying mechanism 50 includes a flow path 51, a spraying pump P1, a circulation pump P2, a boom 52, a spraying section 53, a remaining amount detection sensor 54, and a control section 55.
  • the flow path 51 is a flow path through which liquid flows, and includes a first flow path 51a that connects the first tank 41 and the spraying section 53, and a connection flow path that connects the second tank 42 and the first tank 41 with each other. It has a second flow path 51b.
  • the spraying pump P1 is arranged in the first flow path 51a.
  • the spraying pump P1 transfers the liquid in the first tank 41 to the spraying section 53 through the first flow path 51a.
  • the circulation pump P2 is a pump corresponding to the circulation pump in the present invention, and is arranged in the second flow path 51b.
  • the circulation pump P2 transfers the liquid in the second tank 42 to the first tank 41 through the second flow path 51b.
  • the circulation pump P2 may transfer the liquid in the first tank 41 to the second tank 42 through the second flow path 51b.
  • the boom 52 is a rod-shaped member extending from the apparatus main body 10 to both sides of the apparatus main body 10. Although two booms 52 are shown in FIG. 1, there may be only one boom 52, or no boom 52 itself may be provided.
  • the boom 52 is, for example, configured to be rotatable around a connecting portion (not shown) between the apparatus main body 10 and the boom 52, and has two states: one in which the boom 52 extends upward from the apparatus main body 10, and the other in which the boom 52 extends in the horizontal direction. It may be configured such that the state can be changed.
  • the boom 52 may also be provided so as to be movable up and down, for example, so that its position in the height direction can be changed while remaining horizontal.
  • the spraying part 53 is a part that releases liquid to the crops.
  • the spraying section 53 is provided on each boom 52 and also on the device main body 10.
  • the dispersion section 53 provided in the device main body 10 is disposed between the first moving means 21 and the second moving means 22, and is located above the work space S formed by the device main body 10. There is.
  • the spraying section 53 disposed between the first moving means 21 and the second moving means 22 may have a fixed position and not move up and down, or may have a structure where it moves up and down.
  • the spreading part 53 provided on the boom 52 the spreading part 53 also moves up and down as the boom 52 goes up and down.
  • the spraying part 53 When the spraying part 53 is provided so as to be movable up and down, the height of the spraying part 53 relative to the crops can be adjusted, and the liquid can be discharged to the crops from a suitable height.
  • spraying sections 53 are provided in this embodiment, all of the spraying sections 53 are not essential components, and a configuration may be adopted in which only one of them is provided.
  • the remaining amount detection sensor 54 is a remaining amount detection means for detecting the remaining amount of liquid in the first tank 41 and the second tank 42.
  • a remaining amount detection sensor 54 is provided in each of the first tank 41 and the second tank 42.
  • the remaining amount detection sensor 54 may be any type of sensor as long as it can detect the remaining amount of liquid in the tank.
  • the remaining amount detection sensor 54 is, for example, a load cell for detecting the weight of the liquid in the tank.
  • the remaining amount detection sensor 54 may be a sensor for detecting the position of the liquid in the tank.
  • the remaining amount detection sensor 54 may detect the weight of a tank containing liquid.
  • the control unit 55 controls the operation of the spraying pump P1 and the circulation pump P2 based on the detection result of the remaining amount detection sensor 54. A specific example of control will be described below with reference to FIGS. 6 and 7.
  • the liquid in the first tank 41 gradually decreases as the liquid is sprayed. Therefore, when the liquid in the first tank 41 decreases, the control unit 55 operates the circulation pump P2 to transfer the liquid in the second tank 42 to the first tank 41.
  • FIG. 6 is a flowchart of an example of the operation of the spraying pump P1 based on the detection result of the remaining amount detection sensor 54.
  • the control unit 55 first identifies the remaining amount of liquid in the first tank 41 based on the detection result of the remaining amount detection sensor 54 of the first tank 41 (step S1).
  • the control unit 55 determines whether the remaining amount of liquid in the first tank 41 is below a predetermined reference value (step S2). If the remaining amount of liquid in the first tank 41 is not below the predetermined reference value (No in step S2), the process returns to step S1.
  • step S2 If the remaining amount of liquid in the first tank 41 is below the predetermined reference value (Yes in step S2), the control unit 55 operates the circulation pump P2 to transfer the liquid in the second tank 42 to the first It is transferred to the tank 41 (step S3). Thereby, the liquid in the second tank 42 is replenished into the first tank 41. For example, when the circulation pump P2 transfers a predetermined amount of liquid to the first tank 41, the control unit 55 stops the operation of the circulation pump P2.
  • control unit 55 By causing the control unit 55 to operate the circulation pump P2 as described above, it is possible to automatically replenish the liquid in the second tank 42 to the first tank 41 whose amount of liquid has decreased due to spraying.
  • FIG. 7 is a flowchart of an example of the operation of the circulation pump P2 based on the detection result of the remaining amount detection sensor 54.
  • the control unit 55 determines the remaining amount of liquid in the first tank 41 and the remaining amount of liquid in the second tank 42 based on the detection results of the remaining amount detection sensor 54 of the first tank 41 and the second tank 42. Specify (step S11).
  • the control unit 55 determines whether the difference between the remaining amount of liquid in the first tank 41 and the remaining amount of liquid in the second tank 42 exceeds a first threshold that is a predetermined threshold (step S12). If the difference in remaining amount does not exceed the first threshold (No in step S12), the process returns to step S11.
  • the control unit 55 If the difference in remaining amount exceeds the first threshold (Yes in step S12), the control unit 55 operates the circulation pump P2 to transfer the liquid from one tank with a large remaining amount to the other tank ( Step S13). This reduces the difference in the amount of liquid remaining in the tank.
  • the control unit 55 determines the remaining amount of liquid in the first tank 41 and the liquid in the second tank 42 based on the difference between the weight of the first tank 41 containing the liquid and the weight of the second tank 42 containing the liquid. It may be determined whether the difference between the amount and the remaining amount exceeds a predetermined threshold. Specifically, the control unit 55 may determine whether the difference between the weight of the first tank 41 containing the liquid and the weight of the second tank 42 containing the liquid exceeds the predetermined threshold value. .
  • the control unit 55 detects the difference between the remaining amount of liquid in the first tank 41 and the remaining amount of liquid in the second tank 42 based on the detection results of the remaining amount detection sensor 54 of the first tank 41 and the second tank 42. It is determined whether or not the value has fallen below a second threshold value that is smaller than the first threshold value (step S14).
  • the "second threshold” is, for example, a difference between the remaining amount of liquid in the first tank 41 and the remaining amount of liquid in the second tank 42. This value is less than 10%.
  • step S14 If the difference in remaining amount is not below the second threshold (No in step S14), the control unit 55 continues the operation of the circulation pump P2. If the difference in remaining amount is less than the second threshold (Yes in step S14), the control unit 55 stops the operation of the circulation pump P2.
  • control unit 55 operates the circulation pump P2 to equalize the amount of liquid in the first tank 41 and the amount of liquid in the second tank 42.
  • the amount of liquid may be adjusted so that the amount is in a predetermined ratio.
  • the difference between the weight of the first tank 41 containing liquid and the weight of the second tank 42 containing liquid is It may be determined whether or not the difference between the remaining amount of liquid in the tank 41 and the remaining amount of liquid in the second tank 42 exceeds a predetermined threshold value.
  • the control unit 55 receives a first instruction input by the user (for example, an instruction to equalize the remaining amounts in both tanks), and sets a predetermined threshold (for example, with reference to the above-mentioned "second threshold"), the pump P2 is operated so that the difference between the remaining amounts of both tanks becomes less than the second threshold.
  • the control unit 55 also receives a second instruction input by the user (for example, an instruction to make the remaining amounts in both tanks a predetermined ratio that is not uniform), and stores it in the storage unit in association with the second instruction.
  • the pump P2 may be operated with reference to the predetermined threshold value set so that the difference between the remaining amounts in both tanks becomes equal to or greater than the predetermined threshold value. According to such a configuration, the remaining amounts in both tanks can be made equal or a predetermined ratio that is not uniform can be made depending on the input from the user.
  • the first tank 41 and the second tank 42 are provided separately.
  • the first tank 41 and the second tank 42 are arranged not at a high position such as on the connecting portion 13 of the device main body 10, but on the side of the first moving means 21 and the second moving means 22, respectively. has been done. Therefore, the center of gravity of the liquid spraying device 1 can be lowered compared to a configuration in which the entire tank is disposed at the upper part of the device main body 10, and the liquid spraying device 1 can be run stably.
  • FIG. 8 is a diagram schematically showing the components of a spraying mechanism 50A that is a modified example.
  • the spraying mechanism 50A is configured to be able to spray the liquid in the first tank 41 and the liquid in the second tank 42 selectively or simultaneously.
  • the spraying mechanism 50A includes, for example, a flow path 56, a solenoid valve V1 and a solenoid valve V2, a spraying pump P1, a boom 52, a spraying section 53, a remaining amount detection sensor 54, and a control section 55. are doing. Duplicate explanations of structural parts having the same functions as the dispersing mechanism 50 in FIG. 5 will be omitted.
  • the solenoid valve V1, the solenoid valve V2, and the control section 55 constitute a switching mechanism in the present invention.
  • the flow path 56 is a flow path that connects the first tank 41 and the spraying section 53 and also connects the second tank 42 and the spraying section 53.
  • the flow path 56 includes a first flow path 56a extending from the first tank 41, a second flow path 56b extending from the second tank 42, a confluence point of the first flow path 56a and the second flow path 56b, and a dispersion section 53. It has a third flow path 56c that connects.
  • the solenoid valve V1 and the solenoid valve V2 are valves whose opening and closing are switched by the control unit 55.
  • the solenoid valve V1 is arranged in the first flow path 56a
  • the solenoid valve V2 is arranged in the second flow path 56b. .
  • the control unit 55 controls the operations of the solenoid valve V1, the solenoid valve V2, and the spraying pump P1.
  • the control unit 55 controls the solenoid valve V1 and the solenoid valve V2, and sets the flow path 56 to a connected state in which only the liquid in the first tank 41 is discharged from the dispensing unit 53 and a connected state in which only the liquid in the second tank 42 is discharged from the dispensing unit.
  • the connection state is switched to either a connected state in which liquid is discharged from the spraying section 53 or a connected state in which liquid from both the first tank 41 and the second tank 42 is discharged from the spraying section 53 at the same time.
  • control unit 55 discharges only the liquid in the first tank 41 from the spraying unit 53 by operating the spraying pump P1 with the solenoid valve V1 open and the solenoid valve V2 closed.
  • the control section 55 also causes only the liquid in the second tank 42 to be discharged from the dispersion section 53 by operating the dispersion pump P1 with the solenoid valve V1 closed and the solenoid valve V2 opened.
  • the control unit 55 also causes the liquid in the first tank 41 and the second tank 42 to be simultaneously discharged from the spraying unit 53 by operating the spraying pump P1 with both the solenoid valves V1 and V2 open. .
  • the liquid spraying device 1 can spray the liquid in the first tank 41 and the liquid in the second tank 42 selectively or simultaneously.
  • the dispersion mechanism 50A in FIG. 8 may be provided with a circulation pump P2 (see FIG. 5), and the liquid may be transferred bidirectionally between the first tank 41 and the second tank 42.
  • control unit 55 may perform the following operations. It is assumed that one of the first tank 41 and the second tank 42 contains, for example, a chemical solution to be diluted, and the other contains, for example, water.
  • the control unit 55 controls each valve so that the solenoid valves V1 and V2 are opened, and operates the dispersion pump P1 with the solenoid valves V1 and V2 open. As a result, the chemical solution and water are mixed, and the diluted chemical solution is sprayed from the spraying section 53.
  • the solenoid valves V1 and V2 have adjustable opening degrees
  • the control unit 55 sets each valve to a predetermined opening degree so that the chemical solution and water are diluted at a desired ratio. By doing so, the concentration can be adjusted.
  • such mixing of the chemical solution and water before spraying is not limited to the configuration shown in FIG. 8, but may be performed in the configuration shown in FIG. 5.
  • a predetermined chemical solution is stored in the first tank 41 and water is stored in the second tank 42.
  • the control unit 55 determines the amount of water to be supplied from the second tank 42 to the first tank 41 based on the concentration of the chemical liquid in the first tank 41, the amount of the chemical liquid, and the concentration after dilution. Then, the control unit 55 operates the circulation pump P2 to supply the above-determined amount of water to the first tank 41. Thereby, the chemical solution in the first tank 41 is diluted to a desired concentration.
  • the control unit 55 may perform the above processing based on the concentration of the chemical solution input by the user. Specifically, the control unit 55 may utilize the concentration of the chemical solution input by the user via a user interface such as a touch panel or a physical switch.
  • the liquid dispersion device may further include one or more tanks in addition to the first tank and the second tank.
  • the dispersion mechanism 50 (FIG. 5) may include a first tank 41, a second tank 42, and a third tank.
  • each tank can contain any liquid, for example, the first tank 41 and the second tank 42 may contain water, and the third tank may contain a chemical solution.
  • the third tank may be the same size as the first tank 41 and the second tank 42, or may be smaller than these tanks. If the third tank is smaller than the first tank 41 and the second tank 42, for example, the center of gravity of the liquid spraying device is unlikely to become high even if the third tank is placed on the connecting portion 13 of the device main body 10. It is advantageous.
  • the spraying mechanism supplies the chemical solution in the third tank to the first tank 41 or the second tank by causing the control unit 55 to drive the pump. 42 or both tanks at the same time.
  • FIG. 9 is a diagram showing a modification of the device main body.
  • the first leg portion 11-1 and the second leg portion 12-1 are formed higher than those of the device main body 10 of FIG. It is located in a high position.
  • the dispersing part 53 is not provided in the connecting part 13, but is a member that is spanned between the first leg part 11-1 and the second leg part 12-1 at a position below the connecting part 13. It is located in In such a configuration, the work space S is below the spraying section 53. It is preferable that the first tank 41 and the second tank 42 be located below the spraying section 53 from the viewpoint of lowering the center of gravity.
  • the positions of the first tank 41 and the second tank 42 are such that the lower limit of the liquid level of the liquid to be accommodated is determined. , it may be below the dispersing part 53 located at the upper limit within the movable range.
  • a connecting portion 13-1 connecting the first leg portion 11-1 and the second leg portion 12-1 is formed in an arch shape.
  • the other configurations are the same as the device main body 10-1.
  • the connecting portion 13 only needs to connect the first leg portion 11-1 and the second leg portion 12-1 in a state where they are separated from each other, and the shape of the connecting portion 13 may be any shape. It's okay.
  • the connecting portion 13 of the device main body 10 in FIG. 1 may be formed as shown in FIG. 9(b).
  • FIG. 10 is a schematic diagram showing an example of a specific configuration of the first tank 41. Although both the first tank 41 and the second tank 42 may have the configuration as shown in FIG. 10, the first tank 41 is illustrated here.
  • the first tank 41 has an inflow pipe 45 for flowing liquid into the first tank 41, an air vent pipe 46 for discharging air from the first tank 41, and a stirring device 47.
  • the inflow pipe 45 is drawn into the first tank 41 so that the end thereof is located near the bottom of the first tank 41 .
  • the configuration may be such that the air vent pipe 46 is not provided and the first tank 41 only has an opening (not shown) for air venting.
  • the stirring device 47 stirs the liquid in the first tank 41 using power from a motor or the like (not shown). For example, by having the control unit 55 periodically operate the stirring device 47, the concentration of the liquid in the first tank 41 can be kept uniform.
  • the configuration similar to that in FIG. 10 may also be provided in the second tank 42, and the control unit 55 controls the stirring device 47 of the first tank 41 and the stirring device (not shown) of the second tank 42. They may be operated at the same time or at different timings.
  • the control unit 55 may stir the liquid by the following operation.
  • the control unit 55 operates the stirring device 47 when a predetermined period of time or more has passed since the liquid spraying device 1 last sprayed.
  • the control unit 55 operates the stirring device 47 when the elapsed time since the pump P1 was activated and stopped during the previous spraying is a predetermined time or more.
  • the control unit 55 may operate the pump between the two tanks so that a predetermined amount of liquid is supplied from the second tank 42 to the first tank 41. Such an operation also allows the liquid in the first tank 41 to be stirred and the concentration of the chemical solution to be uniform.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Insects & Arthropods (AREA)
  • Pest Control & Pesticides (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Catching Or Destruction (AREA)
  • Special Spraying Apparatus (AREA)

Abstract

Ce dispositif de pulvérisation de liquide (1) se déplace le long d'une zone striée dans laquelle un objet à pulvériser est présent, le dispositif de pulvérisation de liquide (1) comprenant : un corps principal de dispositif (10) ayant un premier moyen de déplacement (21) et un second moyen de déplacement (22) qui sont positionnés sur les côtés respectifs de la zone striée ; un premier réservoir (41) et un second réservoir (42) qui reçoivent un liquide ; et un mécanisme de pulvérisation (50) ayant une partie de pulvérisation (53) à partir de laquelle le liquide est évacué vers l'objet à pulvériser. Le premier réservoir (41) est disposé sur le côté du premier moyen de déplacement (21) du corps principal de dispositif (10). Le second réservoir (42) est disposé sur le côté du second moyen de déplacement (22) du corps principal de dispositif (10).
PCT/JP2023/006282 2022-03-07 2023-02-21 Dispositif de pulvérisation de liquide WO2023171366A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2023512804A JP7403905B1 (ja) 2022-03-07 2023-02-21 液体散布装置
JP2023206182A JP2024019339A (ja) 2022-03-07 2023-12-06 液体散布装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022034312 2022-03-07
JP2022-034312 2022-03-07

Publications (1)

Publication Number Publication Date
WO2023171366A1 true WO2023171366A1 (fr) 2023-09-14

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PCT/JP2023/006282 WO2023171366A1 (fr) 2022-03-07 2023-02-21 Dispositif de pulvérisation de liquide

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JP (2) JP7403905B1 (fr)
WO (1) WO2023171366A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6140168U (ja) * 1984-08-16 1986-03-13 株式会社クボタ 歩行型散布機
JP2001017056A (ja) * 1999-07-02 2001-01-23 Kioritz Corp 液体送出装置及び液体散布装置
JP2003250318A (ja) * 2002-02-28 2003-09-09 National Agricultural Research Organization 茶園管理方法並びに装置
JP2005065664A (ja) * 2003-08-20 2005-03-17 Yasutoshi Iwase 農業管理ロボット
JP2010200652A (ja) * 2009-03-02 2010-09-16 Iseki & Co Ltd 作業車
CN102626065A (zh) * 2012-02-16 2012-08-08 江苏大学 一种两轮驱动自走式高地隙水田喷杆喷雾机

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7134121B2 (ja) 2019-03-22 2022-09-09 ヤンマーパワーテクノロジー株式会社 農作業用車両

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6140168U (ja) * 1984-08-16 1986-03-13 株式会社クボタ 歩行型散布機
JP2001017056A (ja) * 1999-07-02 2001-01-23 Kioritz Corp 液体送出装置及び液体散布装置
JP2003250318A (ja) * 2002-02-28 2003-09-09 National Agricultural Research Organization 茶園管理方法並びに装置
JP2005065664A (ja) * 2003-08-20 2005-03-17 Yasutoshi Iwase 農業管理ロボット
JP2010200652A (ja) * 2009-03-02 2010-09-16 Iseki & Co Ltd 作業車
CN102626065A (zh) * 2012-02-16 2012-08-08 江苏大学 一种两轮驱动自走式高地隙水田喷杆喷雾机

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JP7403905B1 (ja) 2023-12-25
JP2024019339A (ja) 2024-02-08
JPWO2023171366A1 (fr) 2023-09-14

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