Liquid medicine negative pressure recovery device for cotton seedling spraying, experimental liquid medicine equipment and field liquid medicine equipment

Abstract

The application provides a pesticide liquid negative pressure recovery device for cotton seedling spraying, an experimental pesticide liquid device and a field pesticide liquid device, and relates to the technical field of agricultural machinery. The pesticide liquid negative pressure recovery device comprises a recovery assembly and a drainage assembly. The recovery assembly is internally provided with a recovery space, and the recovery space is in a negative pressure condition. The drainage assembly is connected to one side of the recovery assembly along the horizontal direction, and the drainage assembly is sequentially and side by side provided with a first drainage structure and a second drainage structure along the vertical downward direction. The drainage effect of the first drainage structure is weaker than that of the second drainage structure. The recovery space recovers the pesticide liquid outside through the first drainage structure and the second drainage structure. The technical scheme can solve the problem that the pesticide liquid drifts seriously due to the influence of wind and other factors during the spraying process, causing environmental pollution and resource waste.

Description

Technical Field

[0001] This application relates to the field of agricultural machinery technology, and in particular to a negative pressure recovery device for spraying pesticides on cotton seedlings, a laboratory pesticide solution device, and a field pesticide solution device. Background Technology

[0002] With the development of modern agriculture, the application of pesticides has become one of the important means of controlling crop diseases and pests. However, the irrational use of pesticides not only leads to resource waste but also has a serious negative impact on the ecological environment. In order to promote sustainable agricultural development and reduce the environmental impact of chemical pesticides, countries around the world are actively developing new environmentally friendly pesticides and application technologies, striving to improve pesticide utilization and reduce environmental pollution.

[0003] Currently, spraying during the seedling stage is a common pest and disease control measure in cotton cultivation. However, traditional spraying equipment mainly relies on high-pressure nozzles to atomize the pesticide solution and spray it directly onto the crop. While this method is simple to operate, it has many shortcomings in practical application. On the one hand, the droplet size of the pesticide solution is difficult to control, resulting in some pesticide solution failing to effectively adhere to the target plants; on the other hand, the spraying process is easily affected by natural factors such as wind speed and direction, causing a large amount of pesticide solution to fail to reach the expected coverage area.

[0004] Due to factors such as wind during pesticide spraying, pesticide drift is a significant problem. This not only results in a substantial waste of pesticide resources, but also poses a risk of air and soil pollution as unreserved pesticides drift into the air or fall onto the soil. Furthermore, drifting pesticides may cause phytotoxicity to surrounding non-target crops, thereby reducing the safety and economic benefits of agricultural production. Therefore, effectively recovering unreserved pesticides has become a pressing technical challenge. Summary of the Invention

[0005] The purpose of this application is to provide a negative pressure recovery device for pesticide spraying on cotton seedlings, a pesticide spraying equipment for experiments, and a pesticide spraying equipment for field use, in order to solve the problem of severe pesticide drift caused by factors such as wind during the spraying process, resulting in environmental pollution and resource waste.

[0006] To address the aforementioned technical problems, the embodiments of this application provide the following technical solutions: The first aspect of this application provides a negative pressure recovery device for spraying pesticides on cotton seedlings, comprising: The recycling component has an internal recycling space that is under negative pressure. The drainage component is connected to one side of the recycling component in the horizontal direction. The drainage component has a first drainage structure and a second drainage structure arranged side by side in the vertical downward direction. The drainage effect of the first drainage structure is weaker than that of the second drainage structure. The recycling space uses a first drainage structure and a second drainage structure to recycle external medicines.

[0007] Furthermore, the traffic generation components include: The first frame is connected to the recycling component. The interior of the first frame is provided with a first area and a second area arranged adjacent to each other in a vertically downward direction. Multiple first fan blades are arranged vertically in the first region to form a first flow-guiding structure; Multiple second fan blades are arranged vertically in the second region to form a second flow-guiding structure; Among them, the opening degree of multiple first blades is smaller than the opening degree of multiple second blades.

[0008] Furthermore, the recyclable components include: The second frame has an internal area that forms a recycling space, and the flow diversion component is connected to the second frame. The baffle demister is located inside the second frame.

[0009] Furthermore, the recyclable components also include: The third frame is connected to the side of the second frame away from the flow-inducing component. The interior of the second frame and the interior of the third frame together form a recycling space. The droplet deposition mesh is set inside the third frame.

[0010] Furthermore, the recyclable components also include: The pipe connector is provided with a pipe connection hole for connecting a negative pressure device. The pipe connector is located on the side of the third frame away from the second frame. The pipe connector, the second frame, and the third frame enclose a recycling space.

[0011] Furthermore, a first gear structure is fixedly provided at both ends of the first fan blade along its length, the first fan blade is rotatably connected to the first frame, and the first gear structures of two adjacent first fan blades mesh with each other; The second blade is fixedly equipped with a second gear structure at both ends along its length. The second blade is rotatably connected to the first frame, and the second gear structures of two adjacent second blades mesh with each other.

[0012] Furthermore, the recovery assembly has a drain outlet at its bottom in the vertical direction; The negative pressure recovery device for pharmaceuticals also includes: A flow guide plate is positioned below and connected to the recycling assembly. The flow guide plate extends away from the recycling assembly and extends to the side of the flow guide assembly away from the recycling assembly.

[0013] Furthermore, the portion of the deflector plate near the recovery assembly is provided with a recovery port, which can be connected to the medicine tank of the spraying device.

[0014] Embodiment 2 of the second aspect of this disclosure provides an experimental pharmaceutical apparatus, which includes: The support frame has a first storage space inside for accommodating crops. A spraying device is connected to a support frame and is located at the top of the first receiving space, with the spraying end of the spraying device facing the first receiving space. The negative pressure recovery device for pharmaceuticals provided in the first aspect of this disclosure is connected to a support frame so that the first and second drainage structures of the negative pressure recovery device face the first accommodating space.

[0015] The experimental pharmaceutical equipment provided in the second aspect of this disclosure can directly use the pharmaceutical negative pressure recovery device provided in the first aspect above. For the specific implementation structure, please refer to the relevant content described in the first aspect above, which will not be repeated here.

[0016] Furthermore, the experimental pharmaceutical equipment also includes: Negative pressure device, which is installed on the top of the support frame; Two drug negative pressure recovery devices are located on both sides of the first accommodating space along the horizontal direction. The negative pressure devices can be connected to the pipe connection holes of the drug negative pressure recovery device pipe connector through a three-way pipe so that the recovery space of the drug negative pressure recovery device is in a negative pressure state.

[0017] Furthermore, the experimental pharmaceutical equipment also includes: The slide structure is connected to the support frame so that the support frame can slide along the extension direction of the slide structure.

[0018] Furthermore, the experimental pharmaceutical equipment also includes: The recovery pipeline has one end connected to the medicine tank of the spraying device, which contains a pump, and the other end connected to the recovery port of the negative pressure recovery device.

[0019] The third aspect of this disclosure provides a field pesticide application device, comprising: a field sprayer; and two pesticide negative pressure recovery devices provided in the first aspect of this disclosure, the two pesticide negative pressure recovery devices being disposed opposite to each other on the field sprayer, the area between the two pesticide negative pressure recovery devices forming a second receiving space for accommodating crops, and the spraying end of the spraying device of the field sprayer facing the second receiving space.

[0020] The field-use pharmaceutical equipment provided in the third aspect of this disclosure can directly use the pharmaceutical negative pressure recovery device provided in the first aspect above. For the specific implementation structure, please refer to the relevant content described in the first aspect above, which will not be repeated here.

[0021] The negative pressure recovery device for liquid medicine provided in the first aspect of this application includes: a recovery component and a drainage component, wherein the recovery component has a recovery space under negative pressure, the drainage component is connected to the recovery component in a horizontal direction, the drainage component is provided with a first drainage structure and a second drainage structure, the first drainage structure and the second drainage structure are arranged sequentially in a vertically downward direction, and the drainage effect of the first drainage structure is weaker than that of the second drainage structure.

[0022] During operation, the cotton seedlings grow generally vertically. The negative pressure recovery device for the pesticide solution is placed on one side of the cotton seedling in the horizontal direction, with the first and second drainage structures facing the seedlings. At the same time, the projections of the first and second drainage structures onto the seedlings cover the entire seedling. The spraying device is located above the seedlings and sprays the pesticide solution from top to bottom. Because the recovery space is under negative pressure, the pesticide droplets that are sprayed out but do not cover the seedlings are collected into the recovery space by the recovery components along with the air, thereby realizing the recovery of pesticide solution that has drifted and effectively reducing the waste caused by pesticide solution drift.

[0023] Because the drainage effect of the first drainage structure is weaker than that of the second drainage structure, less pesticide is recovered at the top of the cotton seedling corresponding to the first drainage structure after the pesticide is sprayed. While recovering the pesticide that has drifted, more pesticide can adhere to the fan blades of the cotton seedling. At the neck of the cotton seedling corresponding to the second drainage structure, less pesticide needs to adhere. Therefore, the better drainage effect of the second drainage structure can recover more drifting pesticide, thereby reducing the air and soil pollution problems caused by undeposited pesticide drifting into the air or falling into the soil. Attached Figure Description

[0024] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application are illustrated by way of example and not limitation, with the same or corresponding reference numerals denoteing the same or corresponding parts, wherein: Figure 1 A schematic diagram of the structure of the liquid medicine negative pressure recovery device is shown. Figure 2 A schematic diagram of the first frame, the first drainage structure, and the second drainage structure is shown. Figure 3 A schematic diagram of the second frame and the baffle demister is shown. Figure 4 A schematic diagram of the third frame and the droplet deposition network is shown. Figure 5 The diagram schematically illustrates the structure of the experimental pharmaceutical equipment from a first-person perspective. Figure 6 The diagram illustrates the structure of the experimental pharmaceutical equipment from a second-view perspective.

[0025] Explanation of icon numbers: 1. Recovery component; 11. Second frame; 12. Baffle demister; 13. Third frame; 14. Droplet deposition mesh; 15. Pipe connector; 151. Pipe connection hole; 16. Drain outlet; 2. Drainage component; 21. First frame; 22. First fan blade; 23. Second fan blade; 24. First gear structure; 25. Second gear structure; 3. Deflector plate; 31. Recycling port; 4. Support frame; 5. Spraying device; 51. Liquid tank; 52. Nozzle; 6. Negative pressure device; 7. T-junction pipe; 8. Slide structure; 9. Drive device; A. Recycling space; B. Primary containment space. Detailed Implementation

[0026] The embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application. This application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0027] These embodiments are provided to make the application thorough and complete, and to fully express the scope of the application to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​illustrated in these embodiments should be interpreted as merely exemplary and not as limiting.

[0028] It should be noted that, in the description of this application, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] Furthermore, the terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible margin of error. "Parallel" is not strictly parallel, but within the permissible margin of error. Terms such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well.

[0030] It should also be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device. Example

[0031] like Figure 1 As shown, the first aspect of this disclosure provides a negative pressure recovery device for spraying pesticides on cotton seedlings, including: a recovery component 1 and a diversion component 2; the recovery component 1 has a recovery space A inside, and the recovery space A is under negative pressure; the diversion component 2 is connected to one side of the recovery component 1 in the horizontal direction, and the diversion component 2 has a first diversion structure and a second diversion structure arranged side by side in the vertical downward direction, the diversion effect of the first diversion structure is weaker than the diversion effect of the second diversion structure; wherein, the recovery space A recovers the pesticide solution from the outside through the first diversion structure and the second diversion structure.

[0032] Specifically, recycling component 1 can be either a recycling box or a recycling cylinder, without any specific limitation. The internal space of the recycling box or recycling cylinder can serve as recycling space A. The negative pressure condition inside recycling space A can be achieved by installing an exhaust fan and an exhaust vent in recycling space A, and by the cooperation of the two, the air inside recycling space A can be discharged to create a negative pressure condition, without any specific limitation on its form.

[0033] The drainage component 2 can be a cover installed on the recovery component 1. The recovery component 1 can be provided with a mounting hole connecting to the recovery space A, and the drainage component 2 is fastened to the mounting hole. The first and second drainage structures can be two sets of holes provided on the drainage component 2. Vertically, the first drainage structure is above the second drainage structure to connect the recovery space A with the external environment. Specifically, the drainage effect can be the flow rate introduced into the recovery space A. When the first and second drainage structures recover external liquid, the drifting liquid droplets will flow into the recovery space A with the airflow. The second drainage structure can introduce more airflow into the recovery space A compared to the first drainage structure. Specifically, the drainage effect of the first drainage structure can be made weaker than that of the second drainage structure by setting different hole diameters in the two sets of holes.

[0034] The negative pressure recovery device for liquid medicine provided in the first aspect of this application includes: a recovery component 1 and a drainage component 2. The recovery component 1 has a recovery space A under negative pressure. The drainage component 2 is connected to the recovery component 1 in a horizontal direction. The drainage component 2 is provided with a first drainage structure and a second drainage structure. The first drainage structure and the second drainage structure are arranged sequentially in a vertically downward direction. The drainage effect of the first drainage structure is weaker than that of the second drainage structure.

[0035] During operation, the cotton seedlings grow generally vertically. The negative pressure recovery device for the pesticide solution is placed on one side of the cotton seedling in the horizontal direction. The first and second drainage structures face the cotton seedlings, and their projections cover the entire seedling. The spraying device 5 is located above the cotton seedlings and sprays the pesticide solution from top to bottom. Because the recovery space A is under negative pressure, the pesticide droplets that are sprayed out but do not cover the cotton seedlings are recovered into the recovery space A by the recovery component 1, thereby recovering the pesticide solution that has drifted and effectively reducing the waste caused by the drifting of the pesticide solution.

[0036] Because the drainage effect of the first drainage structure is weaker than that of the second drainage structure, less pesticide is recovered at the top of the cotton seedling corresponding to the first drainage structure after the pesticide is sprayed. While recovering the pesticide that has drifted, more pesticide can adhere to the leaves of the cotton seedling. At the neck of the cotton seedling corresponding to the second drainage structure, less pesticide needs to adhere. Therefore, the better drainage effect of the second drainage structure can recover more drifting pesticide, thereby reducing the air and soil pollution problems caused by undeposited pesticide drifting into the air or falling into the soil.

[0037] like Figure 2As shown, in some embodiments, the drainage component 2 includes: a first frame 21, a plurality of first fan blades 22, and a plurality of second fan blades 23; the first frame 21 is connected to the recycling component 1, and the interior of the first frame 21 is provided with a first region and a second region arranged sequentially adjacent to each other in a vertically downward direction; the plurality of first fan blades 22 are arranged vertically in the first region to form a first drainage structure; the plurality of second fan blades 23 are arranged vertically in the second region to form a second drainage structure; wherein the opening degree of the plurality of first fan blades 22 is smaller than the opening degree of the plurality of second fan blades 23.

[0038] Specifically, the first frame 21 can be a circular frame. In this embodiment, the first frame 21 can be a rectangular frame. The connection between the rectangular frame and the recycling component 1 can be through rivets or bolts, without specific limitations. The internal area of ​​the first frame 21 is divided into a first area and a second area, with the first area above the second area. The first fan blade 22 and the second fan blade 23 are not specifically limited, as long as the airflow through the first area caused by the first fan blade 22 is less than the airflow through the second area caused by the second fan blade 23. In this embodiment, the first fan blade 22 and the second fan blade 23 can be the same fan blade, with the opening of the first fan blade 22 being less than that of the second fan blade 23 to control the airflow through the first area to be less than the airflow through the second area. The connection between the multiple first fan blades 22 and the multiple second fan blades 23 and the first frame 21 can be through welding or through clips, without specific limitations on the connection method.

[0039] like Figure 3 As shown, in some embodiments, the recovery component 1 includes: a second frame 11 and a baffle demister 12; the internal region of the second frame 11 forms a recovery space A, and the flow guiding component 2 is connected to the second frame 11; the baffle demister 12 is disposed inside the second frame 11.

[0040] Specifically, the second frame 11 can be a circular frame or a rectangular frame, without specific limitations. The inner frame portion of the second frame 11 has a depth along the horizontal direction to enclose a first channel structure, which can serve as the recycling space A. The connection between the flow guiding component 2 and the second frame 11 can be achieved by welding or riveting the second frame 11 and the first frame 21 along the horizontal direction, with the inner frame area of ​​the first frame 21 corresponding to the inner frame area of ​​the second frame 11, so that airflow can enter the inner frame area of ​​the second frame 11, i.e., the recycling space A, through the first and second flow guiding structures.

[0041] The baffle demister 12 can be a standard baffle demister 12. The baffle demister 12 has multiple baffles stacked vertically inside. In this embodiment, the baffles can be S-shaped, with the groove in the center of the S-shaped baffle facing vertically downwards. This allows the baffle demister 12 to separate the airflow and the liquid medication, enabling the liquid medication on the baffle to move vertically downwards and eventually flow to the bottom of the recovery space A. The connection between the baffle demister 12 and the second frame 11 can be via bolts or rivets.

[0042] like Figure 4 As shown, in some embodiments, the recycling component 1 further includes: a third frame 13 and a droplet deposition mesh 14; the third frame 13 is disposed on the side of the second frame 11 away from the diversion component 2, and the interior of the second frame 11 and the interior of the third frame 13 together constitute the recycling space A; the droplet deposition mesh 14 is disposed inside the third frame 13.

[0043] Specifically, the third frame 13 can be a circular frame or a rectangular frame, without specific limitations. The inner frame of the third frame 13 also has a horizontal depth to enclose the second channel. When the second frame 11 is connected to the third frame 13, the first channel structure and the second channel structure are joined together to form the recovery space A. The connection between the third frame 13 and the second frame 11 can be welding or riveting, without specific limitations. The connection between the droplet deposition mesh 14 and the third frame 13 can be riveting or fixed by a connecting groove. The droplet deposition mesh 14 can be a standard droplet deposition mesh 14, without specific limitations. The droplet deposition mesh 14 is a porous media layer. The liquid droplets of the liquid form a spray in the airflow. The porous media layer can effectively prevent spray backflow and increase the liquid recovery rate.

[0044] like Figure 1 As shown, in some embodiments, the recycling component 1 further includes: a pipe connector 15, which is provided with a pipe connection hole 151 for connecting the negative pressure device 6. The pipe connector 15 is located on the side of the third frame 13 away from the second frame 11. The pipe connector 15, the second frame 11 and the third frame 13 enclose the recycling space A.

[0045] The pipe connector 15 has a cover with a pipe connection hole 151 and is connected to the side of the third frame 13 away from the second frame 11. The connection between the two can be by bolts or by welding, and the connection method is not limited. In this embodiment, the pipe connector 15 can be a cover with a tapered structure, on which the pipe connection hole 151 is provided. The pipe connector 15, the second frame 11, and the third frame 13 enclose a recycling space A. The recycling space A is connected to the negative pressure device 6 through the pipe connected by the pipe connection hole 151, and the negative pressure device 6 creates a negative pressure condition inside the recycling space A. It should be noted that during the connection process between the first frame 21, the second frame 11, the third frame 13, and the pipe connector 15, it is necessary to ensure that the connection is airtight. Specifically, a seal can be provided between the interconnecting parts to ensure the airtightness of the recycling space A.

[0046] like Figure 2 As shown, in some embodiments, a first gear structure 24 is fixedly provided at both ends of the first fan blade 22 along its length, the first fan blade 22 is rotatably connected to the first frame 21, and the first gear structures 24 of two adjacent first fan blades 22 mesh with each other; a second gear structure 25 is fixedly provided at both ends of the second fan blade 23 along its length, the second fan blade 23 is rotatably connected to the first frame 21, and the second gear structures 25 of two adjacent second fan blades 23 mesh with each other.

[0047] Specifically, the rotational connection between the multiple first blades 22 and the multiple second blades 23 and the first frame 21 can be achieved through bearings or through clearance fit, without specific limitations. Two first gear structures 24 are respectively provided at both ends of the length direction of the first blade 22, and are fixedly connected to the first gear structure 24. The fixed connection can be achieved through welding or through a slot connection. The first gear structures 24 at the first ends of two adjacent first blades 22 are fitted together, and the first gear structures 24 at the first ends of two adjacent second blades 23 are fitted together to ensure that when one first blade 22 rotates relative to the first frame 21, the other first blades 22 can follow suit, thus achieving synchronous rotation of the multiple first blades 22. The connection method and motion principle of the two second gear structures 25 at both ends of the length direction of the second blades 23 to the first blades 22 and the first gear structure 24 are the same, and will not be elaborated here. Driving one second blade 23 to rotate can also drive the other second blades 23 to rotate synchronously. This setup allows for adjustment of the opening of the first blade 22 and the second blade 23 based on the external airflow velocity, increasing the recovery rate of the liquid medicine. It also makes it easier to adjust multiple first blades 22 and multiple second blades 23.

[0048] like Figure 1As shown, in some embodiments, the recovery component 1 is provided with a drain port 16 at the bottom in the vertical direction; the liquid negative pressure recovery device also includes a guide plate 3, which is disposed below the recovery component 1 and connected to the recovery component 1. The guide plate 3 extends away from the recovery component 1 and extends to the side of the drainage component 2 away from the recovery component 1.

[0049] Specifically, the guide plate 3 can be a long rectangular plate or a long elliptical plate, without specific limitation. In this embodiment, a rectangular plate can be used as the guide plate 3. One end of the guide plate 3 in the width direction is connected to the recovery component 1, and the connection method can be riveting or welding, without specific limitation. The other end of the guide plate 3 extends away from the recovery component 1 and extends to the side of the diversion component 2 away from the recovery component 1, so that the guide plate 3 extends to the side of the diversion component 2 away from the recovery component 1 and has an acute angle of inclination with the horizontal direction. The guide plate 3 can prevent the liquid that has not been recovered by the recovery component 1 from being blocked, and can reduce the liquid falling to the soil surface due to gravity and polluting the soil. The liquid attached to the guide plate 3 will slide down to a lower position due to the inclination of the guide plate 3. For the drain port 16 provided at the bottom of the recovery component 1 in the vertical direction, the liquid recovered in the recovery space A can be released into the guide plate 3 for recovery. In this embodiment, a timing device can be set to periodically open the drain port 16 to prevent excessive accumulation of medicine in the recovery space A.

[0050] like Figure 1 As shown, in some embodiments, the portion of the guide plate 3 near the recovery assembly 1 is provided with a recovery port 31, which can be connected to the liquid tank 51 of the spraying device 5.

[0051] Specifically, the liquid medicine recovered by the guide plate 3 can be directly transferred to the liquid medicine tank 51 through the pipe connected to the recovery port 31 so that the recovered liquid medicine can be reused. Similarly, the bottom of the recovery component 1 can also be inclined so that the liquid medicine can be discharged from the drain port 16 to the recovery port 31. Example

[0052] like Figure 5 , 6 As shown in Embodiment 2 of the second aspect of this disclosure, an experimental pesticide device is provided, including: a support frame 4, a spraying device 5, and at least one pesticide negative pressure recovery device as described in Embodiment 1 of this disclosure; the support frame 4 has a first receiving space B for accommodating crops; the spraying device 5 is connected to the support frame 4, the spraying device 5 is located at the top of the first receiving space B, and the spraying end of the spraying device 5 faces the first receiving space B; the pesticide negative pressure recovery device is connected to the support frame 4, so that the first drainage structure and the second drainage structure of the pesticide negative pressure recovery device face the first receiving space B.

[0053] Specifically, the support frame 4 can be composed of multiple rods spliced ​​together, or it can be composed of multiple plates and rods; there is no specific limitation on its composition. The first accommodating space B is the space enclosed by the support frame 4, and the cotton seedlings can be located in the first accommodating space B. The spraying device 5 can be a conventional spraying device 5, which includes a nozzle 52, a liquid tank 51, and a control cabinet, etc. The nozzle 52 serves as the spraying end, facing the first accommodating space B, to spray the cotton seedlings with liquid pesticide. The connection between the negative pressure recovery device and the spraying device 5 and the support frame 4 can be achieved by bolts or rivets.

[0054] The negative pressure recovery device for the liquid medicine described in this embodiment 2 can be directly used as the negative pressure recovery device for the liquid medicine provided in embodiment 1 above. For the specific implementation structure, please refer to the relevant content described in embodiment 1 above, which will not be repeated here.

[0055] Embodiment 2 of the second aspect of this disclosure provides an experimental pesticide application device, including: a support frame 4, a spraying device 5, and at least one pesticide negative pressure recovery device provided in the first aspect of this disclosure; the support frame 4 has a first receiving space B for accommodating crops; the spraying device 5 is connected to the support frame 4, and the spraying device 5 is located at the top of the first receiving space B, with the spraying end of the spraying device 5 facing the first receiving space B; the pesticide negative pressure recovery device is connected to the support frame 4, such that the first and second drainage structures of the pesticide negative pressure recovery device face the first receiving space B. This setup allows for the simulation of pesticide application patterns in actual farmland under laboratory conditions using the spraying device 5 and the support frame 4. During operation, cotton seedlings are placed in the first receiving space B, and the spraying device 5 and the negative pressure recovery device are turned on. Pesticide droplets sprayed from the pesticide negative pressure recovery device that do not cover the cotton seedlings are collected by the recovery component 1 into the recovery space A along with the air, thus recovering pesticides that have drifted and effectively reducing waste caused by pesticide drift.

[0056] like Figure 5 , 6 As shown, in some embodiments, the experimental drug solution equipment further includes: a negative pressure device 6 and two drug solution negative pressure recovery devices; the negative pressure device 6 is installed on the top of the support frame 4; the two drug solution negative pressure recovery devices are respectively located on both sides of the first accommodating space B along the horizontal direction, and the negative pressure device 6 can be connected to the pipe connection hole 151 of the drug solution negative pressure recovery device pipe connector 15 through a three-way pipe 7, so that the recovery space A of the drug solution negative pressure recovery device is in a negative pressure state.

[0057] Specifically, the negative pressure device 6 can be a conventional negative pressure device 6. In this embodiment, the negative pressure device 6 can be an exhaust fan, which simultaneously provides negative pressure conditions to the recovery space A of the two liquid negative pressure devices 6 through a three-way pipe 7, thus saving production costs. At the same time, the opposite arrangement of two liquid negative pressure recovery devices can effectively improve the liquid recovery rate. For illustrative purposes, Figure 6 The liquid tank 51 and the pipe used to connect the tee pipe 7 to the pipe connection hole 151 are not shown in the figure.

[0058] like Figure 5 , 6 As shown, in some embodiments, the experimental drug solution device further includes a slide structure 8, which is connected to the support frame 4 so that the support frame 4 can slide along the extension direction of the slide structure 8.

[0059] Specifically, the slide structure 8 can be a standard slide structure 8 found in existing technology. The slide structure 8, in conjunction with the drive device 9, causes the support frame 4 to move along the extension direction of the slide structure 8, thereby driving the spraying device 5, the pesticide liquid negative pressure recovery device, and the negative pressure device 6 to move. The extension direction of the slide structure 8 can be the arrangement direction of multiple cotton seedlings spaced apart under laboratory conditions. This setup allows for the simulation of pesticide application to multiple cotton seedlings in the laboratory, while simultaneously recovering the pesticide liquid.

[0060] like Figure 5 , 6 As shown, in some embodiments, the experimental drug solution equipment further includes: a recovery pipe, one end of which is connected to the drug solution tank 51 of the spraying device 5, the drug solution tank 51 is equipped with a pump, and the other end of the recovery pipe is connected to the recovery port 31 of the guide plate 3 of the drug solution negative pressure recovery device.

[0061] Specifically, the liquid tank 51 can be connected to the recovery port 31 of the guide plate 3 of the experimental liquid equipment through the recovery pipe. When the pump installed in the liquid tank 51 starts to work, the liquid collected by the guide plate 3 is transported to the liquid tank 51 of the spraying device 5 through the recovery pipe to realize the recycling and reuse of the liquid. Figure 5 , 6 As not shown in the diagram, the specific layout of the recovery pipeline can be determined based on the actual location of each component of the experimental reagent equipment. Example

[0062] The third aspect of this disclosure provides a field application device for pesticides, which includes a field sprayer and two pesticide negative pressure recovery devices provided in the first aspect of this disclosure; the two pesticide negative pressure recovery devices are arranged opposite to each other on the field sprayer, and the area between the two pesticide negative pressure recovery devices constitutes a second containment space for accommodating crops, with the spraying end of the spraying device 5 of the field sprayer facing the second containment space.

[0063] Specifically, the field spraying equipment can be a standard field spraying device in existing technology. It generally includes a negative pressure device 6 and a spraying device 5. The negative pressure recovery device can be a support frame installed on the negative pressure recovery device. The support frame connects two field sprayers, and the gap between the two negative pressure recovery devices forms a second receiving space. The spraying end of the spraying device 5 is located above this second receiving space. During field operations, the spraying device 5 sprays the pesticide solution. As the solution covers the cotton seedlings, some of the drifting solution is recovered by the negative pressure recovery device, effectively recovering the unsettled solution.

[0064] All terms used in this application have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0065] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0066] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A negative pressure recovery device for pesticide spraying on cotton seedlings, characterized in that, include: A recycling component, wherein a recycling space is provided inside the recycling component, and the recycling space is under negative pressure; A drainage component is connected to one side of the recycling component in the horizontal direction. The drainage component has a first drainage structure and a second drainage structure arranged side by side in the vertical downward direction. The drainage effect of the first drainage structure is weaker than that of the second drainage structure. The recovery space is used to recover external medicinal liquid through the first drainage structure and the second drainage structure; The drainage component includes: A first frame is connected to the recycling component, and the interior of the first frame is provided with a first region and a second region arranged adjacent to each other in a vertically downward direction. Multiple first fan blades are arranged vertically in the first region to form the first drainage structure; Multiple second fan blades are arranged vertically in the second region to form the second drainage structure; Wherein, the opening degree of the plurality of first fan blades is smaller than the opening degree of the plurality of second fan blades; the recycling assembly includes: The second frame, the internal area of ​​the second frame constitutes the recycling space, and the drainage component is connected to the second frame; A baffle demister, wherein the baffle demister is disposed inside the second frame; The third frame is connected to the side of the second frame away from the drainage component, and the interior of the second frame and the interior of the third frame together constitute the recycling space; A droplet deposition mesh, wherein the droplet deposition mesh is disposed inside the third frame; A pipe connector is provided with a pipe connection hole for connecting a negative pressure device. The pipe connector is located on the side of the third frame away from the second frame. The pipe connector, the second frame, and the third frame enclose the recycling space. The first fan blade is fixedly provided with a first gear structure at both ends along its length. The first fan blade is rotatably connected to the first frame, and the first gear structures of two adjacent first fan blades mesh with each other. The second fan blade is fixedly provided with a second gear structure at both ends along its length. The second fan blade is rotatably connected to the first frame, and the second gear structures of two adjacent second fan blades mesh with each other. Both the first and second drainage structures face one side of the cotton seedling. The spraying device is located above the cotton seedling and sprays the pesticide solution from top to bottom. The drainage effect of the first drainage structure is weaker than that of the second drainage structure, so that the cotton seedling corresponding to the first drainage structure has more pesticide attached, while the second drainage structure recovers more pesticide solution.

2. The liquid medicine negative pressure recovery device according to claim 1, characterized in that, The recycling component has a drain outlet at its bottom along the vertical direction; The liquid medicine negative pressure recovery device also includes: A flow guide plate is disposed below the recycling component and connected to the recycling component. The flow guide plate extends away from the recycling component and extends to the side of the flow guide component away from the recycling component.

3. The liquid medicine negative pressure recovery device according to claim 2, characterized in that, The portion of the guide plate near the recovery assembly is provided with a recovery port, which can be connected to the liquid tank of the spraying device.

4. A laboratory reagent solution apparatus, characterized in that, include: A support frame, wherein the support frame has a first receiving space for accommodating crops; A spraying device is connected to the support frame and is located at the top of the first accommodating space, with the spraying end of the spraying device facing the first accommodating space. The negative pressure recovery device for liquid medicine as described in any one of claims 1-3, wherein the negative pressure recovery device for liquid medicine is connected to the support frame such that the first drainage structure and the second drainage structure of the negative pressure recovery device for liquid medicine are facing the first accommodating space; A negative pressure device is installed on the top of the support frame; The two negative pressure recovery devices for the medicine liquid are located on both sides of the first accommodating space along the horizontal direction. The negative pressure devices can be connected to the pipe connection holes of the pipe connector of the negative pressure recovery device for the medicine liquid through a three-way pipe, so that the recovery space of the negative pressure recovery device for the medicine liquid is in a negative pressure state.

5. The experimental pharmaceutical solution equipment according to claim 4, characterized in that, Also includes: A slide rail structure is connected to the support frame so that the support frame can slide along the extension direction of the slide rail structure.

6. The experimental pharmaceutical solution equipment according to claim 4, characterized in that, Also includes: A recovery pipe is provided, one end of which is connected to the liquid tank of the spraying device. The liquid tank is equipped with a pump. The other end of the recovery pipe is connected to the recovery port of the guide plate of the liquid negative pressure recovery device.

7. A field application device for pesticide solutions, characterized in that, include: Field sprayers; The two pesticide liquid negative pressure recovery devices according to any one of claims 1-3 are arranged opposite to each other on the field sprayer, and the area between the two pesticide liquid negative pressure recovery devices constitutes a second receiving space for accommodating crops, with the spraying end of the spraying device of the field sprayer facing the second receiving space.

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