Quantitative and accurate liquid level measuring device for spraying forestry insect pest prevention agent

Abstract

The invention relates to the technical field of measuring devices, in particular to a liquid level quantitative accurate measuring device for forestry insect pest prevention pesticide spraying. Comprising a pesticide box body, partition plates parallel to the inner wall of the pesticide box body are arranged in the pesticide box body, liquid level measuring spaces are formed between the adjacent partition plates and the inner corner of the pesticide box body, and liquid level measuring columns are arranged in the liquid level measuring spaces; the bottom of the liquid level measuring column is communicated with the interior of the pesticide box body, a plurality of horizontal limiting plates are arranged in the liquid level measuring column, the limiting plates divide the interior of the liquid level measuring column into a plurality of measuring cavities parallel in the height direction, and measuring assemblies are arranged in the measuring cavities. And the limiting plate is provided with a communicating hole. The liquid level measuring columns are arranged in the liquid level measuring space between the partition plate and the pesticide box body, the liquid level in the pesticide box body is detected through the multiple liquid level measuring columns, the average value is obtained, and the measuring precision is improved.

Description

Technical Field

[0001] The invention relates to the technical field of measuring devices, and in particular to a liquid level quantitative and precise measuring device for spraying forestry pest control agents. Background Art

[0002] Forest pests and diseases have a serious impact on forest ecosystems and economic development. Therefore, pest and disease prevention and control is one of the key measures to protect forest health and sustainable development. Sprayers, as an important tool for forest pest and disease prevention and control, control the occurrence and spread of pests and diseases by spraying pesticides. The original pest and disease control sprayers are divided into handheld, backpack or mobile types. With the development and progress of science and technology, drone spraying has been added to the existing spraying methods.

[0003] In order to improve the effect of forest pest control, it is necessary to accurately configure the spraying agent. The existing liquid level detection and control is generally achieved by setting a float in the medicine box. The liquid level height of the medicine is judged by the position of the float. The error is large, and there will be a certain degree of bumps during the spraying process. Especially when the drone is spraying the medicine, the speed changes caused by the start, stop, and turn of the drone will cause the height of the medicine to fluctuate all the time, which is not conducive to the configuration of the medicine concentration and the regulation of the spraying amount of the medicine, and is inconvenient to use.

[0004] Therefore, the present application provides a liquid level quantitative and precise measurement device for spraying forest pest control agents, which solves the problem of low accuracy in measuring the liquid level height of the medicine box in the prior art and improves the accuracy of the configuration of the medicine concentration and the amount of the medicine sprayed. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a liquid level quantitative and precise measurement device for spraying forest pest control agents.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a liquid level quantitative precision measuring device for spraying forest pest control agents, comprising a medicine box body, a partition plate parallel to the inner wall of the medicine box body is arranged inside the medicine box body, a liquid level measuring space is formed between adjacent partition plates and the inner corner of the medicine box body, and a liquid level measuring column is arranged inside the liquid level measuring space; The bottom of the liquid level measuring column is connected with the interior of the medicine box body. A plurality of horizontal limit plates are arranged inside the liquid level measuring column. The limit plates divide the interior of the liquid level measuring column into a plurality of measuring cavities arranged in parallel along the height direction. A measuring component is arranged inside the measuring cavity, and the limit plates are provided with connecting holes.

[0007] As an optimization, the measuring assembly includes a detection float, a winding assembly and a pull rope, the winding assembly is arranged on the side wall of the measuring cavity, and the pull rope is connected between the detection float and the winding assembly; A guide roller is arranged on the lower side of the limit plate, and the pull rope is hung on the guide roller. The bottom surface of the detection float is parallel to the bottom surface of the measuring cavity.

[0008] As an optimization, the winding assembly includes a spring shaft, one end of the pull rope is connected to the spring shaft, and the axis of the spring shaft is connected to a Hall sensor.

[0009] As an optimization, the gravity of the detection float is greater than the tension of the winding assembly and the pull rope on the detection float, and the sum of the gravity of the detection float and the buoyancy of the medicine on the detection float is greater than the tension of the winding assembly and the pull rope on the detection float.

[0010] As an optimization, a partition layer is arranged between the bottom of the partition plate and the bottom of the medicine box body, and a single partition plate is provided with a plurality of spoilers perpendicular to the partition plate, and the spoilers on the single partition plate are arranged in parallel.

[0011] As an optimization, the bottom of the liquid level measuring column is open, and the top of the liquid level measuring column is connected to the interior of the medicine box body.

[0012] As an optimization, it further includes a controller, which is connected to the measurement component; When the medicine box body is in use, the partition plate is used to reduce the shaking of the liquid inside the medicine box body, and the liquid levels at the corners inside the medicine box body are respectively detected by multiple liquid level measuring columns, and then the controller is used to calculate and obtain the average liquid level.

[0013] As an optimization, the detection float is a hollow structure.

[0014] This scheme is a liquid level quantitative and accurate measurement device for spraying forest pest control agents, which has the following benefits: The present application sets a plurality of partitions inside the medicine box body, reduces the fluctuation of the medicine liquid inside the medicine box body by setting the partitions and spoilers, sets a liquid level measuring column inside the liquid level measuring space between the partitions and the medicine box body, detects the liquid level inside the medicine box body by the plurality of liquid level measuring columns, and takes the average value to improve the measurement accuracy; A plurality of measuring cavities are arranged inside the liquid level measuring column, and a measuring component is arranged inside the measuring cavity. The liquid level inside the measuring cavity is detected by the measuring component, so as to further reduce the influence of external liquid fluctuation on the liquid level measurement; When the measuring component is in use, the detection float is connected to the winding component and the pull rope. When the liquid level inside the measuring chamber rises or falls, the detection float is driven to rise or fall under the action of the buoyancy of the liquid, and the liquid level in the measuring chamber is measured by measuring the change in the length of the pull rope. Since the liquid levels inside the measuring chamber and the medicine box body are relatively independent, the liquid level measurement inside the measuring chamber is not affected by the liquid level fluctuations inside the medicine box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an axial schematic diagram of the present invention.

[0016] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0017] Figure 3 It is a top view schematic diagram of the internal structure of the present invention.

[0018] Figure 4 For the present invention Figure 3 Schematic diagram of the AA section structure.

[0019] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged structure of part C.

[0020] Figure 6 It is a schematic diagram of the connection structure of the partition plate of the present invention.

[0021] Figure 7 It is a schematic diagram of the axial side of the liquid level measurement column of the present invention.

[0022] Figure 8 It is a front schematic diagram of the liquid level measuring column of the present invention.

[0023] Fig. 9 For the present invention Figure 8 Schematic diagram of the BB cross-section structure.

[0024] Fig.10 It is a schematic cross-sectional axial view of the liquid level measuring column of the present invention.

[0025] Fig.11 For the present invention Fig.10 Schematic diagram of the enlarged structure of part D.

[0026] Fig.12 Schematic diagram of the liquid level change calculation method of the present invention.

[0027] Among them, 1. medicine box body, 2. partition plate, 3. liquid level measurement space, 4. liquid level measurement column, 5. limit plate, 6. measurement cavity, 7. connecting hole, 8. detection float, 9. pull rope, 10. spring shaft, 11. partition layer, 12. spoiler. DETAILED DESCRIPTION

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0029] like Figure 1-Figure 12 As shown, a liquid level quantitative precision measuring device for spraying forest pest control agents comprises a medicine box body 1, wherein a partition plate 2 parallel to the inner wall of the medicine box body 1 is arranged inside the medicine box body 1, and a liquid level measuring space 3 is formed between adjacent partition plates 2 and the inner corner of the medicine box body 1, wherein a liquid level measuring column 4 is arranged inside the liquid level measuring space 3; The bottom of the liquid level measuring column 4 is connected with the interior of the medicine box body 1. A plurality of horizontal limit plates 5 are arranged inside the liquid level measuring column 4. The limit plates 5 divide the interior of the liquid level measuring column 4 into a plurality of measuring cavities 6 arranged in parallel along the height direction. A measuring component is arranged inside the measuring cavity 6. The limit plates 5 are provided with connecting holes 7.

[0030] The top of the medicine box body 1 can be provided with a sealing cover, a liquid injection port and other structures, and a one-way air valve can be provided on the top of the medicine box body 1 to facilitate the injection of liquid. The bottom or lower part of the medicine box body 1 can be connected to a spray assembly for spraying the medicine.

[0031] The partition plate 2 can be fixedly arranged inside the medicine box body 1, or can be arranged to be detachably connected. When the partition plate 2 is a detachable structure, the partition plate 2 and the inner wall of the medicine box body 1 can be connected by bolts, magnetic suction, plugging, etc.

[0032] like Figure 5 As shown, the measuring assembly includes a detection float 8, a winding assembly and a pull rope 9, the winding assembly is arranged on the side wall of the measuring cavity 6, and the pull rope 9 is connected between the detection float 8 and the winding assembly; A guide roller is provided at the lower side of the limit plate 5 , and the pull rope 9 is hung on the guide roller. The bottom surface of the detection float 8 is parallel to the bottom surface of the measuring cavity 6 .

[0033] The detection float 8 is hoisted by at least two pull ropes 9, and the two pull ropes 9 are symmetrically arranged, so that the detection float 8 can maintain balance and stability, and the gravity of the detection float 8 is greater than the tension given to it by multiple pull ropes 9. The guide roller and the pull rope 9 should be made of smooth material, and the friction between the two is considered to be zero.

[0034] like Figure 5 As shown, the winding assembly includes a spring shaft 10, one end of the pull rope 9 is connected to the spring shaft 10, and the axis of the spring shaft 10 is connected to a Hall sensor.

[0035] The Hall sensor is used to detect the number of turns of the spring shaft 10. According to the outer diameter of the spring shaft 10 and the number of turns, the length change of the pull rope 9 can be known. Corresponding detection can be performed by other sensors. A detection roller can also be set on the outside of the spring shaft 10 so that the roller surface of the detection roller contacts the pull rope 9. At this time, the Hall sensor can also be connected to the axis of the detection roller. The selection of the Hall sensor model and the installation position can be selected according to the actual situation, which will not be repeated here.

[0036] like Figure 5 As shown, the gravity of the detection float 8 is greater than the pulling force of the winding assembly and the pull rope 9 on the detection float 8, and the sum of the gravity of the detection float 8 and the buoyancy of the medicine on the detection float 8 is greater than the pulling force of the winding assembly and the pull rope 9 on the detection float 8.

[0037] The detection float 8 can keep a static state under the action of the pull rope 9 and the spring shaft 10. When the liquid level inside the liquid level measuring column 4 rises, the detection float 8 can rise under the action of buoyancy.

[0038] like Figure 4 As shown, a partition layer 11 is provided between the bottom of the partition plate 2 and the bottom of the medicine box body 1, and a single partition plate 2 is provided with a plurality of spoilers 12 perpendicular to the partition plate 2, and the spoilers 12 on a single partition plate 2 are arranged in parallel.

[0039] like Figure 5 As shown, the bottom of the liquid level measuring column 4 is open, and the top of the liquid level measuring column 4 is connected to the inside of the medicine box body 1.

[0040] The bottom of the measuring column is open, and the height of the partition layer 11 should be greater than the distance between the bottom of the liquid level measuring column 4 and the bottom surface of the medicine box body 1. The top of the liquid level measuring column 4 is provided with an air hole so that the medicine can smoothly enter the measuring cavity 6 from bottom to top.

[0041] Also included is a controller, the controller being connected to the measurement component; When the medicine box body 1 is in use, the partition plate 2 is used to reduce the shaking of the liquid inside the medicine box body 1, and the liquid levels at the corners of the medicine box body 1 are respectively detected by multiple liquid level measuring columns 4, and then the controller calculates and obtains the average liquid level.

[0042] like Figure 5 As shown, the detection float 8 is a hollow structure.

[0043] In order to reduce the weight of the detection float 8, it can be set as a hollow structure, but the hollow structure can reduce the impact of liquid level fluctuations on its stability. When a lighter material is used and the force relationship between the pull ropes 9 can be satisfied, the detection float 8 can be a solid structure. However, no matter what the structure of the detection float 8 is, the position between the detection float 8 and the multiple pull ropes 9 should be uniform and the force should be stable, and no deflection will occur when the detection float 8 rises or falls.

[0044] Directions: When the device is used, water or liquid medicine is injected into the medicine box body 1, and the liquid level inside the medicine box body 1 is detected by the liquid level measuring column 4 during the injection or spraying process; During the water / medicine injection process, adjacent measuring chambers 6 are connected by connecting holes 7, and the medicine liquid enters the liquid level measuring column 4 from the bottom to the top through the partition layer 11. The liquid level inside the liquid level measuring column 4 changes with the change of the liquid level inside the medicine box body 1. The liquid level inside the medicine box body 1 is detected by the liquid level measuring column 4, and the injection of medicine liquid is stopped when the set liquid level is reached; Taking the spraying operation of forest pest control drugs as an example, first set the appropriate spraying amount according to the tree types and heights in a certain area, and then use the drone to drive the medicine box body 1 to spray the trees in the area, and evenly spray through the spray component at the bottom of the medicine box body 1 to achieve pest control.

[0045] During the movement of the drone, the medicine inside the medicine box body 1 will fluctuate and the liquid level will change continuously. The height of the liquid level change is calculated by calculating the height of the position change of the detection float 8, and the average value is calculated for the results of the detection of multiple measurement components.

[0046] like Fig.12 As shown, as the medicine spraying process proceeds, the liquid level inside the medicine box body 1 decreases, and the detection float 8 drops from a high position to a low position. The height change of the detection float 8 is the change of the liquid level inside the medicine box body 1. The height change value of the detection float 8 is h. The vertical distance between the detection float 8 and the vertical plane where the guide roller is located at the initial position is c, and the length of the pull rope 9 between the guide roller and the detection float 8 is b. The distance between the guide roller and the top extension surface of the detection float 8 is ; When the detection float 8 is at a low position, the length of the pull rope 9 between the guide roller and the detection float 8 is ; , is the length change of the pull rope 9, which is calculated by detecting the value of the Hall sensor; When the detection float 8 is at a low position, the total height between the top of the detection float 8 and the guide roller is m. ; The liquid level changes ; In summary, .

[0047] The controller calculates the height of the liquid level change, and averages the results calculated by multiple liquid level measuring columns 4 to obtain an accurate amount of medicine sprayed.

[0048] In actual use, since the height of the side facial cavity is a fixed value, the height change value of the detection float 8 inside each side facial cavity has an upper limit. When the height change value of the detection float 8 inside a single side facial cavity reaches the upper limit, it indicates that the side facial cavity is full of medicine. The liquid level change value can be calculated based on the detection float 8 on the upper side that has not reached the upper limit of the height change value.

[0049] The setting of the detection float 8 does not affect the liquid flow inside the connecting hole 7. According to the height and diameter of the liquid level measuring column 4, one or more connecting holes 7 can be set, and the distance number or diameter can be set independently to quickly connect the liquid level inside the medicine box body 1.

[0050] The above-mentioned specific embodiments are only specific cases of the present invention. The patent protection scope of the present invention includes but is not limited to the product form and style of the above-mentioned specific embodiments. Any liquid level quantitative precision measuring device for spraying forestry pest control agents that complies with the claims of the present invention and any appropriate changes or modifications made thereto by ordinary technicians in the corresponding technical field shall fall within the patent protection scope of the present invention.

Claims

1. A liquid level quantitative and precise measuring device for spraying forest pest control agents, comprising a medicine box body (1), characterized in that: A partition plate (2) parallel to the inner wall of the medicine box body (1) is arranged inside the medicine box body (1), a liquid level measurement space (3) is formed between adjacent partition plates (2) and the inner corner of the medicine box body (1), and a liquid level measurement column (4) is arranged inside the liquid level measurement space (3); The bottom of the liquid level measuring column (4) is connected to the interior of the medicine box body (1), and a plurality of horizontal limit plates (5) are arranged inside the liquid level measuring column (4). The limit plates (5) divide the interior of the liquid level measuring column (4) into a plurality of measuring cavities (6) arranged in parallel along the height direction. A measuring component is arranged inside the measuring cavity (6), and the limit plates (5) are provided with a connecting hole (7).

2. The liquid level quantitative and precise measuring device for spraying forest pest control agents according to claim 1 is characterized in that: The measuring assembly comprises a detection float (8), a reeling assembly and a pull rope (9), wherein the reeling assembly is arranged on a side wall of the measuring cavity (6), and the pull rope (9) is connected between the detection float (8) and the reeling assembly; A guide roller is provided on the lower side of the limit plate (5), a pull rope (9) is hung on the guide roller, and the bottom surface of the detection float (8) is parallel to the bottom surface of the measuring cavity (6).

3. The liquid level quantitative and precise measuring device for spraying forest pest control agents according to claim 2 is characterized in that: The winding assembly comprises a spring shaft (10), one end of the pull rope (9) is connected to the spring shaft (10), and the axis of the spring shaft (10) is connected to a Hall sensor.

4. The liquid level quantitative and precise measuring device for spraying forest pest control agents according to claim 3 is characterized by: The gravity of the detection float (8) is greater than the pulling force of the reeling assembly and the pull rope (9) on the detection float (8), and the sum of the gravity of the detection float (8) and the buoyancy of the liquid medicine on the detection float (8) is greater than the pulling force of the reeling assembly and the pull rope (9) on the detection float (8).

5. The liquid level quantitative and precise measuring device for spraying forest pest control agents according to claim 1, characterized in that: A partition layer (11) is provided between the bottom of the partition plate (2) and the bottom of the medicine box body (1), and a plurality of spoilers (12) perpendicular to the partition plate (2) are provided on a single partition plate (2), and the spoilers (12) on a single partition plate (2) are arranged in parallel.

6. The liquid level quantitative and precise measuring device for spraying forest pest control agents according to claim 1, characterized in that: The bottom of the liquid level measuring column (4) is open, and the top of the liquid level measuring column (4) is connected to the inside of the medicine box main body (1).

7. The liquid level quantitative and precise measuring device for spraying forest pest control agents according to claim 1, characterized in that: Also included is a controller, the controller being connected to the measurement component; When the medicine box body (1) is in use, the partition plate (2) is used to reduce the sloshing of the liquid inside the medicine box body (1), and the liquid levels at the corners inside the medicine box body (1) are respectively detected by a plurality of liquid level measuring columns (4), and then the controller is used to calculate and obtain an average value of the liquid levels.

8. The liquid level quantitative and precise measuring device for spraying forest pest control agents according to claim 2, characterized in that: The detection float (8) is a hollow structure.

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