Onboard agricultural sprayer for small greenhouse

Abstract

The utility model belongs to the technical field of plant protection unmanned aerial vehicles, and particularly relates to a machine-mounted agricultural spray head for a small greenhouse, the machine-mounted agricultural spray head for the small greenhouse comprises a threaded mounting pipe and an anti-blocking mechanism, and the bottom of the threaded mounting pipe is in threaded connection with an atomizing spray head; the anti-blocking mechanism comprises a filter screen and a flow guide plate, the filter screen is arranged between the threaded mounting pipe and the atomizing nozzle, the flow guide plate is fixedly connected to the interior of the threaded mounting pipe, the flow guide plate is rotationally connected with a rotating shaft, and the surface of the rotating shaft is fixedly connected with a scraper in contact with the filter screen; liquid medicine is guided to rotate the scraping plate in a single direction in a spiral flow guide mode, so that the scraping plate rapidly rotates to scrape solid impurities detained on the filter screen and drives the solid impurities to rotate together, the situation that the solid impurities intensively cover the filter screen can be avoided, the filter screen is always kept in an unblocked state, and it is guaranteed that pesticide spraying work can be normally conducted.

Description

Technical Field

[0001] This utility model belongs to the field of plant protection drone technology, specifically relating to an airborne agricultural spray head for small greenhouses. Background Technology

[0002] Agricultural spraying drones, also known as agricultural plant protection drones, are automated devices specifically designed for the agricultural field. They efficiently and precisely spray pesticides onto crops. Through GPS positioning systems and software, they accurately control flight paths and spraying plans, achieving efficient, precise, water- and pesticide-saving pesticide spraying. Their advantages include rapidly covering large areas of farmland, reducing water and chemical pesticide use, improving atomization and spray uniformity, and simultaneously reducing the risk of human contact with pesticides.

[0003] Existing pesticide spraying drone nozzles are difficult to disassemble and assemble quickly and easily, making it inconvenient to clean the inside of the nozzle and to disassemble and assemble the pipes with the nozzle, thus hindering pipe replacement and making it difficult to ensure the nozzle's usability. For example, a Chinese patent discloses an adjustable pesticide spraying nozzle for agricultural plant protection drones (authorization announcement number CN216254912U). Although the above device solves the problem of difficult nozzle cleaning by using a threaded connection to the nozzle, it only uses a filter screen to directly intercept solid impurities mixed in the pesticide solution. When the impurity content in the pesticide solution is high, the filter screen is easily clogged, requiring the user to stop the drone for cleaning, which reduces the spraying efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a small, machine-mounted agricultural spray head for greenhouses that can self-clean solid impurities on the surface of the filter screen without affecting its normal filtration, thus ensuring that pesticide spraying can proceed normally.

[0005] The specific technical solution adopted by this utility model is as follows:

[0006] A small greenhouse on-board agricultural sprayer includes a threaded mounting tube and an anti-clogging mechanism, wherein the bottom of the threaded mounting tube is threadedly connected to an atomizing nozzle;

[0007] In a preferred embodiment, the anti-clogging mechanism includes a filter screen and a guide plate. The filter screen is disposed between the threaded mounting tube and the atomizing nozzle. The guide plate is fixedly connected to the inside of the threaded mounting tube. The guide plate is rotatably connected to a rotating shaft. A scraper that contacts the filter screen is fixedly connected to the surface of the rotating shaft.

[0008] In a preferred embodiment, the number of scrapers is not less than three, and the scrapers are fixedly connected to the surface of the rotating shaft in a ring around the axis of rotation.

[0009] In a preferred embodiment, the guide vane is spiral-shaped, and the top of the guide vane is conical.

[0010] In a preferred embodiment, a grid disc is placed at the bottom of the filter screen, and the grid disc is slidably connected to the interior of the atomizing nozzle.

[0011] In a preferred embodiment, a stainless steel spring is provided between the grille and the atomizing nozzle, and the stainless steel spring is in a compressed state at this time.

[0012] In a preferred embodiment, a reserved groove is provided at the bottom of the threaded mounting tube, and a sealing ring that contacts the filter screen is embedded inside the reserved groove.

[0013] In a preferred embodiment, the inner side of the threaded mounting tube is provided with a ring of liquid guide ports that are all connected to the reserved groove, and the liquid guide ports are located inside the sealing ring.

[0014] The technical effects achieved by this utility model are as follows:

[0015] 1. The spiral flow guides the pesticide solution to rotate in one direction by the scraper, which makes the scraper rotate quickly to scrape up the solid impurities stuck on the filter screen and rotate the solid impurities together. This can prevent solid impurities from accumulating and covering the filter screen, keeping the filter screen unobstructed and ensuring that the spraying work can be carried out normally.

[0016] 2. During the process of the liquid medicine passing through the threaded installation pipe, the liquid medicine flows through the liquid guide port and hits the sealing ring. This can squeeze the sealing ring towards the filter screen, which can not only improve the operational stability of the filter screen, but also increase the sealing effect of the sealing ring on the gap between the threaded installation pipe and the filter screen, so as to reduce the probability of liquid medicine leakage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional schematic diagram of the overall structure of this utility model;

[0019] Figure 3 This is an exploded schematic diagram of the anti-blocking mechanism in this utility model;

[0020] Figure 4 yes Figure 2 Enlarged view of point A in the middle.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 100. Threaded mounting pipe; 110. Reserved groove; 120. Liquid guide port; 200. Atomizing nozzle; 300. Anti-clogging mechanism; 310. Filter screen; 320. Guide plate; 330. Rotating shaft; 340. Scraper; 350. Grille plate; 360. Stainless steel spring; 370. Sealing ring. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0026] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0027] Example 1

[0028] Please see the appendix Figure 1-4The image shows the first embodiment of this utility model, which provides a small greenhouse-mounted agricultural sprayer, including a threaded mounting tube 100 and an anti-clogging mechanism 300. The bottom of the threaded mounting tube 100 is threadedly connected to an atomizing nozzle 200. The user needs to pre-connect the threaded mounting tube 100 to the liquid outlet of the electric sprayer on the agricultural drone. The electric sprayer is a high-efficiency agricultural machinery device, composed of a storage tank, filter, electric pump, connecting pipe, spray pipe, etc. The electric pump pressurizes the atomizing nozzle 200 to form a mist for spraying. It improves work efficiency, reduces labor intensity, and allows for precise control of the pesticide solution volume. Since the electric sprayer is a currently publicly available and mature pesticide spraying device, the specific model, structure, and usage method need to be selected according to the actual situation, and will not be elaborated here. Furthermore, since both the agricultural drone and the electric sprayer are existing known structures, they are not shown in the accompanying drawings.

[0029] In this embodiment, the plant protection drone drives the electric sprayer to the corresponding position inside the greenhouse. The electric sprayer delivers the pre-loaded liquid medicine into the threaded installation pipe 100. Before the liquid medicine enters the atomizing nozzle 200, the filter screen 310 filters out solid impurities mixed in the liquid medicine. Then the clean liquid medicine enters the atomizing nozzle 200 and is pressurized and atomized and sprayed onto the vegetation in the corresponding area.

[0030] In a preferred embodiment, please refer to Figure 2 , Figure 3 and Figure 4 The anti-clogging mechanism 300 includes a filter screen 310 and a guide plate 320. The filter screen 310 is disposed between the threaded mounting tube 100 and the atomizing nozzle 200. The guide plate 320 is fixedly connected to the inside of the threaded mounting tube 100. The guide plate 320 is rotatably connected to a rotating shaft 330. A scraper 340 that contacts the filter screen 310 is fixedly connected to the surface of the rotating shaft 330. There are no fewer than three scrapers 340, and the scrapers 340 are fixedly connected to the rotating shaft 330 in a ring around the axis of the rotating shaft 330. The surface of the filter screen 310 is designed to increase the rotation and scraping frequency of the scraper 340, further reducing the probability of clogging. The guide plate 320 is spiral in shape, with a conical top. The spiral guide plate 320 can guide the liquid to form a unidirectional vortex, ensuring that the scraper 340 can rotate in one direction. At the same time, the conical top of the guide plate 320 can reduce the resistance when the liquid comes into contact with the guide plate 320, thus reducing the reduction in the liquid flow rate.

[0031] In this embodiment, the medicine liquid is guided to rotate unidirectionally by a spiral flow guide scraper 340, which makes the scraper 340 rotate rapidly to scrape up the solid impurities retained on the filter screen 310 and drive the solid impurities to rotate together. This can prevent solid impurities from concentrating and covering the filter screen 310, so that the filter screen 310 always remains unobstructed and ensures that the spraying work can be carried out normally.

[0032] In a preferred embodiment, please refer to Figure 2 , Figure 3 and Figure 4 A grid plate 350 is placed at the bottom of the filter screen 310. The grid plate 350 is slidably connected to the inside of the atomizing nozzle 200. The grid plate 350 can support the filter screen 310 without affecting the normal passage of the liquid, reducing the probability of the filter screen 310 being deformed by the liquid, and ensuring that the filter screen 310 can operate flat. A stainless steel spring 360 is set between the grid plate 350 and the atomizing nozzle 200. The stainless steel spring 360 is in a compressed state. When the threaded mounting tube 100 is separated from the atomizing nozzle 200, the stainless steel spring 360 can actively push the filter screen 310 to the outside of the atomizing nozzle 200 through the grid plate 350, so as to facilitate the replacement and maintenance of the filter screen 310 by the staff.

[0033] Example 2

[0034] Please see the appendix Figure 2 and Figure 4 As shown, this is the second embodiment of the present invention. This embodiment provides a small greenhouse-mounted agricultural spray head. The bottom of the threaded mounting tube 100 is provided with a reserved groove 110. A sealing ring 370 that contacts the filter screen 310 is embedded in the reserved groove 110. This can prevent the probability of the liquid from leaking outward, thereby reducing the waste of the liquid. The inner side of the threaded mounting tube 100 is provided with a ring-shaped distribution of liquid guide ports 120 that are all connected to the reserved groove 110. The liquid guide ports 120 are located inside the sealing ring 370. The hydraulic pressure of the liquid is used to actively squeeze the sealing ring 370, which can increase the sealing performance of the sealing ring 370 and further reduce the probability of liquid leakage.

[0035] In this embodiment, as the liquid medicine flows through the threaded mounting tube 100, the liquid medicine flows through the liquid guide port 120 and impacts the sealing ring 370. This can squeeze the sealing ring 370 towards the filter screen 310, which can not only improve the operational stability of the filter screen 310, but also increase the sealing effect of the sealing ring 370 on the gap between the threaded mounting tube 100 and the filter screen 310, so as to reduce the probability of liquid medicine leakage.

[0036] The working principle of this utility model is as follows: During the process of the liquid medicine passing through the threaded installation pipe 100, the liquid medicine is guided by the spiral guide plate 320 to form a swirling flow. The swirling liquid medicine pushes the scraper 340 in one direction, and the scraper 340 drives the rotating shaft 330 to rotate. The rotating shaft 330 drives all the scrapers 340 to rotate. The rotating scraper 340 scrapes away the solid impurities intercepted on the surface of the filter screen 310. At this time, the solid impurities are in a state of rotation and flow and are above the filter screen 310. This can avoid the solid impurities from accumulating and clogging the filter screen 310, so as to ensure that the liquid medicine can pass through the filter screen 310 normally, reduce the probability of the filter screen 310 being blocked, and thus ensure that the spraying work can be carried out normally.

[0037] It should be noted that the atomizing nozzle 200, filter screen 310 and sealing ring 370 mentioned above are all devices with relatively mature existing technology. The specific models can be selected according to actual needs, and the specific power supply method can be selected according to the situation, which will not be elaborated here.

[0038] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A small-scale greenhouse-mounted agricultural sprinkler head, characterized in that: Includes a threaded mounting tube (100), the bottom of which is threadedly connected to an atomizing nozzle (200); An anti-clogging mechanism (300) is provided, comprising a filter screen (310) and a guide plate (320). The filter screen (310) is disposed between a threaded mounting tube (100) and an atomizing nozzle (200). The guide plate (320) is fixedly connected to the inside of the threaded mounting tube (100). The guide plate (320) is rotatably connected to a rotating shaft (330). A scraper (340) that contacts the filter screen (310) is fixedly connected to the surface of the rotating shaft (330).

2. The small greenhouse-mounted agricultural sprinkler head according to claim 1, characterized in that: The number of scrapers (340) is not less than three, and the scrapers (340) are fixedly connected to the surface of the rotating shaft (330) in a ring around the axis of the rotating shaft (330).

3. The small greenhouse-mounted agricultural sprinkler head according to claim 1, characterized in that: The guide plate (320) is spiral in shape, and the top of the guide plate (320) is conical in shape.

4. The small greenhouse-mounted agricultural sprinkler head according to claim 1, characterized in that: A grid plate (350) is placed at the bottom of the filter (310), and the grid plate (350) is slidably connected to the inside of the atomizing nozzle (200).

5. A small greenhouse-mounted agricultural sprinkler head according to claim 4, characterized in that: A stainless steel spring (360) is provided between the grille (350) and the atomizing nozzle (200), and the stainless steel spring (360) is in a compressed state at this time.

6. The small greenhouse-mounted agricultural sprinkler head according to claim 1, characterized in that: The bottom of the threaded mounting tube (100) is provided with a reserved groove (110), and a sealing ring (370) that contacts the filter screen (310) is embedded in the reserved groove (110).

7. A small greenhouse-mounted agricultural sprinkler head according to claim 6, characterized in that: The inner side of the threaded mounting tube (100) is provided with a ring of liquid guide ports (120) that are all connected to the reserved groove (110). The liquid guide ports (120) are located inside the sealing ring (370).

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