Root irrigation device for preventing and controlling plant diseases and insect pests

Abstract

The utility model discloses a root irrigation device for plant disease and insect pest control, and belongs to the technical field of plant disease and insect pest control. The device mainly comprises a main body, a pesticide applying structure, a holding part, a battery and a pesticide storage tank, the holding part is installed at one end of the main body, and the battery is embedded between the holding part and the main body; the pesticide storage tank and the pesticide applying structure are installed in the main body, the pesticide applying structure is composed of a pesticide applying assembly, a transverse adjusting structure and a push-pull assembly, part of the pesticide applying mechanism is connected with the pesticide storage tank, and part of the pesticide applying mechanism protrudes out of the main body. The pesticide application device is provided with the adjustable pesticide application structure and the pesticide pre-loading structure, and pesticide application accuracy and pesticide application efficiency can be effectively improved. The device is mainly used for root pesticide application work of food diseases and insect pests.

Description

Technical Field

[0001] The utility model belongs to the technical field of plant disease and insect pest control, and in particular relates to a root irrigation device for plant disease and insect pest control. Background Art

[0002] With the development of modern agriculture, plant disease and insect pest control has become an important issue. For example, some pests and diseases mainly attack the roots of plants, so it is necessary to use a corresponding root irrigation device to apply pesticides to the roots of plants. Most of the existing root irrigation devices use a single-tube structure, which results in low pesticide application efficiency; and some root irrigation devices with multi-tube structures cannot adjust the spacing between the tubes, so when applying pesticides to plants with different spacings, it is impossible to ensure that the tubes can accurately reach the application position, resulting in low accuracy of pesticide application. Therefore, how to improve the efficiency and accuracy of pesticide application of root irrigation devices is a problem that needs to be solved urgently. Utility Model Content

[0003] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and provide a root irrigation device for plant disease and insect pest control, which has an adjustable drug application structure and a pre-loaded drug structure, and can effectively improve the accuracy and efficiency of drug application.

[0004] The root irrigation device for controlling plant diseases and insect pests comprises a main body, a drug application structure, a grip, a battery, and a drug storage tank, wherein the grip is installed at one end of the main body, and a battery is embedded between the grip and the main body; the drug storage tank and the drug application structure are installed in the main body, wherein the drug application structure consists of a drug application component, a lateral adjustment structure, and a push-pull component, and some components of the drug application mechanism are connected to the drug storage tank, and some components protrude outside the main body.

[0005] Preferably, the drug application assembly comprises a cartridge and a soil-breaking assembly, wherein the soil-breaking assembly is arranged at one end of the cartridge, wherein a first piston and a second piston arranged equidistantly are embedded in the cartridge, and a first one-way valve is installed on both the first piston and the second piston.

[0006] Preferably, the interior of the soil-breaking component defines a medicine liquid chamber and a linkage chamber, and one end of the medicine liquid chamber and the linkage chamber are both connected to the medicine cartridge, wherein a first medicine spraying hole is drilled on the side wall of the medicine liquid chamber; a third piston and a spring rod are installed in the linkage chamber, wherein the third piston is located between the medicine cartridge and the spring rod, and a first strong magnet is embedded on the side of the third piston facing the spring rod.

[0007] Preferably, the outer side of the earth-breaking component is provided with a sheath, and a protrusion is provided on the inner wall, which is embedded in the linkage cavity and abuts against the spring rod, and a second strong magnet adapted to the first strong magnet is installed on the side of the protrusion facing away from the spring rod; wherein the magnetic poles of the first strong magnet and the second strong magnet on the opposite side are the same, and the two repel each other.

[0008] Preferably, the lateral adjustment structure includes a driving motor, a first limiting ring, a second limiting ring, a third limiting ring, a first connecting rod, and a second connecting rod, wherein the first connecting rod is connected to an end of the cartridge away from the earth-breaking assembly, and one side of the first connecting rod is connected to the first connecting rod; the second limiting ring is connected to another cartridge, and one side of the second limiting ring is connected to the second connecting rod; the third limiting ring is installed on an end of the outer wall of the cartridge away from the first limiting ring and / or the second limiting ring; wherein the first connecting rod and the second connecting rod are meshedly connected with the power output end of the driving motor installed in the main body.

[0009] Preferably, the second connecting rod is arranged opposite to the first connecting rod, and the vertical height of the second connecting rod is higher than the vertical height of the first connecting rod.

[0010] Preferably, the push-pull assembly includes a gear frame, a driven gear, a lifting motor, a driving gear, and a screw rod. The gear frame is fixedly connected to the first limiting ring and / or the second limiting ring, and a rotatable driven gear is embedded in the gear frame; the lifting motor is installed on one side of the gear frame, and a driving gear meshing with the driven gear is installed at its power output end; the screw rod is embedded in one end of the gear frame, and passes through the driven gear and the first limiting ring and / or the second limiting ring in sequence to extend into the cartridge and be rotatably connected to the first piston.

[0011] Preferably, a threaded hole is drilled in the middle of the driven gear to match the screw rod.

[0012] Preferably, a second one-way valve is installed at the connection between the medicine storage tank and the medicine application structure, and an infusion pipe communicating with the outer wall of the main body is installed at one end of the medicine storage tank away from the medicine application structure.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The distance between the medicine cartridges can be electrically adjusted to suit the cultivation distance between different plants, thereby improving the accuracy and efficiency of pesticide application.

[0015] 2. The cartridge has a three-stage pre-loading structure, which effectively reduces the loading interval and thus improves the efficiency of drug application.

[0016] 3. A sliding sleeve linked to the medicine cartridge is provided on the outside of the spraying structure, which can effectively reduce the probability of the spraying hole being blocked by soil when breaking the soil, thereby improving the operating stability of the device and the efficiency of spraying. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the front view of the utility model;

[0018] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0019] Figure 3 It is a partial enlarged schematic diagram of the internal structure of the utility model;

[0020] Figure 4 This is the front view of the drug dispensing structure of the utility model;

[0021] Figure 5 It is a cross-sectional schematic diagram of the drug dispensing assembly of the utility model;

[0022] Figure 6 It is a structural schematic diagram of the lateral adjustment structure and the push-pull assembly of the utility model;

[0023] Figure 7 This is a front view of the medicine storage tank of the utility model;

[0024] Figure 8 It is a cross-sectional schematic diagram of the utility model.

[0025] In the figure, 100, main body; 101, first shell; 102, second shell; 200, drug application structure; 210, drug application assembly; 211, cartridge; 2111, first piston; 2112, second piston; 2113, first one-way valve; 2114, first chamber; 2115, second chamber; 2116, third chamber; 212, earth-breaking assembly; 2121, liquid chamber; 2122, first spray hole; 2123, linkage chamber; 2124, third piston; 2125, spring rod; 2126, first strong magnet; 213, sheath; 2131, cross arm; 2132, second strong magnet; 2133, second spray hole; 214, cone head; 220, Transverse adjustment structure; 221, driving motor; 222, first limiting ring; 223, second limiting ring; 224, third limiting ring; 225, first connecting rod; 226, second connecting rod; 230, push-pull assembly; 231, gear rack; 232, driven gear; 233, lifting motor; 234, driving gear; 235, screw rod; 300, gripping part; 310, mounting seat; 311, fixing sleeve; 320, carrying handle; 321, control box; 330, pressure rod; 340, connecting seat; 341, circuit board; 400, battery; 500, medicine storage tank; 501, sliding cavity; 510, second one-way valve; 520, perfusion tube; 521, cover plate. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings:

[0027] The directional nouns involved in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application according to the visual orientation shown in the accompanying drawings. Unless otherwise clearly specified and limited, the terms "setting", "installation", "connection", etc. should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0028] like Figures 1 to 4 As shown, the root irrigation device for controlling plant diseases and insect pests includes a main body 100, a drug application structure 200, a grip 300, a battery 400, and a drug storage tank 500, wherein the grip 300 is installed at one end of the main body 100, and the battery 400 is embedded between the grip 300 and the main body 100; the drug storage tank 500 and the drug application structure 200 are installed in the main body 100, wherein the drug application structure 200 is composed of a drug application component 210, a lateral adjustment structure 220, and a push-pull component 230, and some components of the drug application mechanism are connected to the drug storage tank 500, and some components protrude from the main body 100.

[0029] Optionally, the main body 100 is composed of a first shell 101 and a second shell 102, which are buckled together to form a whole, and an installation space is defined between the two.

[0030] Optionally, a plurality of partitions or slots of an integrated structure of the first shell 101 and / or the second shell 102 are provided in the installation space for installing different components.

[0031] Optionally, the gripping portion 300 includes a mounting seat 310, a fixing sleeve 311, and a handle 320. A plurality of mounting seats 310 are provided, which are mounted at one end of the main body 100 in an opposing manner and are respectively connected to both ends of the handle 320, and a fixing sleeve 311 is installed at the connection between the mounting seat 310 and the handle 320. In this way, the entire device can be easily lifted by the handle 320, so that the staff can perform the operation of applying the medicine or move it.

[0032] Optionally, a control box 321 is provided on the handle 320. In this way, a start button and an adjustment button are provided on the control box 321, and the staff can complete corresponding actions by operating the control box 321, thereby effectively improving work efficiency.

[0033] Optionally, a detachable pressing rod 330 is installed between the mounting seats 310 to fix the battery 400 .

[0034] Optionally, a connection socket 340 and a circuit board 341 are further installed in the main body 100 .

[0035] like Figure 5As shown, the drug application assembly 210 includes a medicine barrel 211 and a soil breaking assembly 212, wherein the soil breaking assembly 212 is arranged at one end of the medicine barrel 211, wherein the medicine barrel 211 is embedded with a first piston 2111 and a second piston 2112 arranged equidistantly, and a first non-return valve 2113 is installed on the first piston 2111 and the second piston 2112. In this way, the space in the medicine barrel is divided into a first chamber 2114, a second chamber 2115 and a third chamber 2116 by the first piston 2111 and the second piston 2112. In cooperation with the first one-way valve 2113, when the first piston 2111 and the second piston 2112 move toward the earth-breaking assembly 212, the first one-way valve 2113 is closed under the action of pressure, and the liquid medicine in the medicine storage tank 500 is sucked into the first chamber 2114, and a medicine loading action is completed at this time; when the first piston 2111 and the second piston 2112 move back in the direction away from the earth-breaking assembly 212, the one-way valve automatically opens under the action of pressure, and the liquid medicine originally in the first chamber 2114 enters the second chamber 2115 through the one-way valve; when the first piston 2111 and the second piston 2112 move toward the earth-breaking assembly 212 again, the liquid medicine originally in the second chamber 2115 enters the third chamber 2116, and the liquid medicine is reabsorbed into the first chamber 2114. Therefore, the liquid medicine in the liquid storage tank enters different chambers in turn during the repeated movement of the first piston 2111 and the second piston 2112, thereby completing the pre-loading action. Compared with the traditional single-chamber structure, the multi-chamber structure can also accurately control the amount of medicine loaded and applied, while also effectively improving the efficiency of medicine application.

[0036] Optionally, the second chamber 2115 has a fixed volume, and the ease of the first chamber 2114 and the second chamber 2115 changes with the movement of the first piston 2111 and the second piston 2112 .

[0037] like Figure 5 As shown, the interior of the earth-breaking component 212 defines a liquid medicine chamber 2121 and a linkage chamber 2123, and one end of the liquid medicine chamber 2121 and the linkage chamber 2123 are both connected to the cartridge 211, wherein a first spray hole 2122 is drilled on the side wall of the liquid medicine chamber 2121; a third piston 2124 and a spring rod 2125 are installed in the linkage chamber 2123, wherein the third piston 2124 is located between the cartridge 211 and the spring rod 2125, and a first strong magnet 2126 is embedded on the side of the third piston 2124 facing the spring rod 2125. In this way, part of the medicine liquid in the third chamber 2116 enters the medicine liquid chamber 2121 under the squeezing of the second piston 2112, and is discharged to the outside of the device through the first medicine spray hole 2122; the other part of the medicine liquid enters the linkage chamber 2123 under the squeezing of the second piston 2112, and pushes the third piston 2124 to move in the direction away from the cartridge 211 under the pressure of the second piston 2112 squeezing the medicine liquid.

[0038] It can be understood that the third piston 2124 will move in the opposite direction away from the cartridge 211 under the action of pressure. Conversely, when the second piston 2112 moves to reset in the opposite direction, the medicine liquid in the linkage chamber 2123 is extracted under the action of vacuum. At the same time, the third piston 2124 will also perform a reset movement under the action of vacuum and other forces, return to the initial position, and prepare for the next movement.

[0039] Optionally, a cone head 214 is installed at one end of the soil-breaking component 212 away from the cartridge 211. In this way, the soil surface can be broken by the cone head 214, so that the soil-breaking component 212 can smoothly enter the soil, so that the liquid chamber 2121 can perform the drug application work.

[0040] like Figure 5 As shown, the outer side of the earth-breaking component 212 is provided with a sheath 213, and a cross arm 2131 is provided on the inner side wall thereof, and is embedded in the linkage chamber 2123 and abuts against the spring rod 2125, and a second strong magnet 2132 adapted to the first strong magnet 2126 is installed on the side of the cross arm 2131 facing away from the spring rod 2125; wherein the first strong magnet 2126 and the second strong magnet 2132 have the same magnetic poles on the opposite side, and the two repel each other. In this way, the sheath 213 forms a linkage with the application action of the third chamber 2116 through the cooperation of the cross arm 2131 embedded in the linkage chamber 2123, the third piston 2124 and the spring rod 2125. When the third chamber 2116 performs the drug dispensing action, the third piston 2124 moves toward the cross arm 2131. When the repulsive force between the first strong magnet 2126 and the second strong magnet 2132 reaches a certain value and the repulsive force is greater than the compression force of the spring rod 2125, the cross arm 2131 drives the sheath 213 to slide toward the cone head 214. On the contrary, when the third piston 2124 is driven by the second piston 2112 to recover, the repulsive force between the first strong magnet 2126 and the second strong magnet 2132 is gradually reduced, and the cross arm 2131 drives the sheath 213 to move toward the cartridge 211 and return to the initial position under the elastic action of the spring rod 2125.

[0041] It can be understood that the linkage mode of the first strong magnet 2126 and the second strong magnet 2132 is adopted between the third piston 2124 and the cross arm 2131. Compared with the linkage mode of the connecting rod, the linkage between the first strong magnet 2126 and the second strong magnet 2132 has a certain delay. Before the repulsive force between the first strong magnet 2126 and the second strong magnet 2132 reaches the force to push the second strong magnet 2132 and squeeze the spring rod 2125, the second strong magnet 2132 will not move, but the third piston 2124 always moves following the spraying action of the third chamber 2116. Therefore, the sliding sleeve will not open prematurely in the process of breaking the ground like the linkage structure of the connecting rod, effectively avoiding the situation where the soil blocks the first spray hole 2122 when breaking the ground, ensuring that the spraying work can be carried out smoothly.

[0042] Optionally, a second spray hole 2133 matching the first spray hole 2122 is drilled on the side wall of the sheath 213. In this way, when the sleeve is driven by the third piston 2124 to slide to a specific position, the second spray hole 2133 overlaps and communicates with the first spray hole 2122, thereby achieving the purpose of protecting the first spray hole 2122 while not hindering the first spray hole 2122 from spraying medicine.

[0043] It can be understood that before the second medicine spraying hole 2133 overlaps and communicates with the first medicine spraying hole 2122, as the third piston 2124 continues to squeeze, the pressure in the medicine liquid chamber 2121 gradually increases, so that the medicine liquid in the medicine liquid chamber 2121 is at a high pressure to be released. Even if the second medicine spraying hole 2133 is blocked by soil during the process of breaking the ground, when the second medicine spraying hole 2133 overlaps and communicates with the first medicine spraying hole 2122, the medicine liquid in the medicine liquid chamber 2121 is sprayed out at a higher pressure, flushing the soil blocking the second medicine spraying hole 2133, and also performing the medicine application action. After the pressure in the medicine liquid chamber 2121 gradually decreases, the sheath 213 will gradually reset as the pressure decreases, and timely protect the first medicine spraying hole 2122. Therefore, the stability of the device in applying medicine is effectively improved.

[0044] like Figure 6As shown, the lateral adjustment structure 220 includes a driving motor 221, a first limiting ring 222, a second limiting ring 223, a third limiting ring 224, a first connecting rod 225, and a second connecting rod 226, wherein the first connecting rod 225 is connected to an end of the cartridge 211 away from the earth-breaking assembly 212, and one side of the first connecting rod 225 is connected to the first connecting rod 225; the second limiting ring 223 is connected to another cartridge 211, and one side of the second limiting ring 223 is connected to the second connecting rod 226; the third limiting ring 224 is installed on an end of the outer side wall of the cartridge 211 away from the first limiting ring 222 and / or the second limiting ring 223; wherein the first connecting rod 225 and the second connecting rod 226 are meshedly connected with the power output end of the driving motor 221 installed in the main body 100. In this way, when the driving motor 221 rotates forward or reversely, it drives the first connecting rod 225 and the second connecting rod 226 to move synchronously in the same direction or reverse direction, so that the first limiting ring 222 connected to the first connecting rod 225 and the second limiting ring 223 connected to the second connecting rod 226 follow the first connecting rod 225 and the second connecting rod 226 to move synchronously, thereby achieving the purpose of adjusting the distance between multiple cartridges 211.

[0045] Optionally, the first limiting ring 222, the second limiting ring 223, and the third limiting ring 224 are all adapted and connected to the groove body provided on the main body 100. In this way, the first limiting ring 222, the second limiting ring 223, and the third limiting ring 224 are slidably connected to the groove body provided in the main body 100, so that the three can always move in a straight line along the groove body, avoiding the first limiting ring 222, the second limiting ring 223, or the third limiting ring 224 from being deflected during the movement and causing a jam, thereby effectively improving the operation stability of the lateral adjustment structure 220.

[0046] like Figure 6 As shown, the second connecting rod 226 is arranged opposite to the first connecting rod 225, and the vertical height of the second connecting rod 226 is higher than the vertical height of the first connecting rod 225. In this way, when the first connecting rod 225 and the second connecting rod 226 move toward each other, the first connecting rod 225 and the second connecting rod 226 can form a staggered motion by utilizing the height difference, and will not affect the opposite movement of the two. Thus, the operation stability of the lateral adjustment structure 220 is improved.

[0047] like Figure 6As shown, the push-pull assembly 230 includes a gear frame 231, a driven gear 232, a lifting motor 233, a driving gear 234, and a screw rod 235. The gear frame 231 is fixedly connected to the first limiting ring 222 and / or the second limiting ring 223, and a rotatable driven gear 232 is embedded in the gear frame 231; the lifting motor 233 is installed on one side of the gear frame 231, and a driving gear 234 meshing with the driven gear 232 is installed at its power output end; the screw rod 235 is embedded from one end of the gear frame 231, and passes through the driven gear 232 and the first limiting ring 222 and / or the second limiting ring 223 in sequence to extend into the cartridge 211 and be rotatably connected to the first piston 2111. In this way, through the cooperation of various components of the push-pull assembly 230, the first piston 2111 rises or falls in the cartridge 211 driven by the screw rod 235, thereby automatically completing the pre-loading and application of medicines, effectively reducing the physical output of the staff and improving the work efficiency of the application work.

[0048] Optionally, both the driven gear 232 and the driving gear 234 are bevel gears. In this way, the bevel gears meshing with each other are more closely meshed than ordinary gears, and the power transmission is more coherent and stable, thereby effectively improving the working efficiency of the push-pull assembly 230.

[0049] Optionally, a threaded hole is drilled in the middle of the driven gear 232 to match the screw rod 235 .

[0050] like Figure 7 As shown, a second one-way valve 510 is installed at the connection between the medicine storage tank 500 and the medicine application structure 200 , and a perfusion pipe 520 connected to the outer wall of the main body 100 is installed at one end of the medicine storage tank 500 away from the medicine application structure 200 .

[0051] like Figure 8 As shown, a plurality of sliding cavities 501 are provided at one end of the medicine storage tank 500 facing the medicine dispensing structure 200 for the sliding of the screw rod 235 .

[0052] Optionally, a detachable cover plate 521 is embedded in the port of the position where the perfusion tube 520 communicates with the outer wall of the main body 100 .

[0053] Finally, although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A root irrigation device for controlling plant diseases and insect pests, comprising a main body (100), a drug application structure (200), a gripping portion (300), a battery (400), and a drug storage tank (500), characterized in that: The gripping portion (300) is mounted on one end of the main body (100), and a battery (400) is embedded between the gripping portion (300) and the main body (100); the medicine storage tank (500) and the medicine dispensing structure (200) are mounted in the main body (100), wherein the medicine dispensing structure (200) is composed of a medicine dispensing component (210), a lateral adjustment structure (220), and a push-pull component (230), and some components of the drug dispensing mechanism are connected to the medicine storage tank (500), and some components protrude from the main body (100).

2. A root irrigation device for controlling plant diseases and insect pests according to claim 1, characterized in that: The drug application component (210) comprises a medicine cartridge (211) and a soil-breaking component (212), wherein the soil-breaking component (212) is arranged at one end of the medicine cartridge (211), wherein a first piston (2111) and a second piston (2112) arranged equidistantly are embedded in the medicine cartridge (211), and a first one-way valve (2113) is installed on both the first piston (2111) and the second piston (2112).

3. A root irrigation device for controlling plant diseases and insect pests according to claim 2, characterized in that: The soil-breaking component (212) defines a liquid medicine chamber (2121) and a linkage chamber (2123) inside, and one end of the liquid medicine chamber (2121) and the linkage chamber (2123) are both in communication with the medicine cartridge (211), wherein a first medicine spraying hole (2122) is drilled on the side wall of the liquid medicine chamber (2121); a third piston (2124) and a spring rod (2125) are installed in the linkage chamber (2123), wherein the third piston (2124) is located between the medicine cartridge (211) and the spring rod (2125), and a first strong magnet (2126) is embedded on the side of the third piston (2124) facing the spring rod (2125).

4. A root irrigation device for controlling plant diseases and insect pests according to claim 3, characterized in that: The outer side of the earth-breaking component (212) is provided with a protective sleeve (213), and the inner side wall thereof is provided with a cross arm (2131) which is embedded in the linkage cavity (2123) and abuts against the spring rod (2125), and a second strong magnet (2132) adapted to the first strong magnet (2126) is installed on the side of the cross arm (2131) facing away from the spring rod (2125); wherein the first strong magnet (2126) and the second strong magnet (2132) have the same magnetic poles on the opposite sides, and the two repel each other.

5. The root irrigation device for controlling plant diseases and insect pests according to claim 1, characterized in that: The lateral adjustment structure (220) comprises a driving motor (221), a first limiting ring (222), a second limiting ring (223), a third limiting ring (224), a first connecting rod (225), and a second connecting rod (226), wherein the first connecting rod (225) is connected to an end of the cartridge (211) away from the earth-breaking assembly (212), and one side of the first connecting rod (225) is connected to the first connecting rod (225); the second limiting ring (223) is connected to another cartridge (211), and one side of the second limiting ring (223) is connected to the second connecting rod (226); the third limiting ring (224) is installed at an end of the outer wall of the cartridge (211) away from the first limiting ring (222) and / or the second limiting ring (223); wherein the first connecting rod (225) and the second connecting rod (226) are meshedly connected to a power output end of the driving motor (221) installed in the main body (100).

6. A root irrigation device for controlling plant diseases and insect pests according to claim 5, characterized in that: The second connecting rod (226) is arranged opposite to the first connecting rod (225), and the vertical height of the second connecting rod (226) is higher than the vertical height of the first connecting rod (225).

7. A root irrigation device for controlling plant diseases and insect pests according to claim 1, characterized in that: The push-pull assembly (230) comprises a gear frame (231), a driven gear (232), a lifting motor (233), a driving gear (234), and a screw rod (235); the gear frame (231) is fixedly connected to the first limiting ring (222) and / or the second limiting ring (223), and a rotatable driven gear (232) is embedded in the gear frame (231); the lifting motor (233) is mounted on one side of the gear frame (231), and a driving gear (234) meshing with the driven gear (232) is mounted on the power output end of the lifting motor (233); the screw rod (235) is embedded in one end of the gear frame (231), and passes through the driven gear (232) and the first limiting ring (222) and / or the second limiting ring (223) in sequence, and extends into the cartridge (211) to be rotatably connected to the first piston (2111).

8. A root irrigation device for controlling plant diseases and insect pests according to claim 7, characterized in that: A threaded hole is drilled in the middle of the driven gear (232) to match the screw rod (235).

9. A root irrigation device for controlling plant diseases and insect pests according to any one of claims 1 to 8, characterized in that: A second one-way valve (510) is installed at the connection between the medicine storage tank (500) and the medicine application structure (200), and an infusion pipe (520) communicating with the outer wall of the main body (100) is installed at one end of the medicine storage tank (500) away from the medicine application structure (200).

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