A medicine spraying apparatus for agricultural planting

Abstract

The utility model provides a kind of medicine spraying apparatus for agricultural planting belongs to agricultural planting equipment mechanical technical field, including water tank, the inner side wall of water tank close to human body back side is fixedly installed with connecting seat, connecting seat both sides are respectively fixedly connected with piston cylinder for storing and conveying clean water, piston cylinder bottom side is equipped with first check valve, the opening of first check valve is towards piston cylinder interior to control clean water from water tank and flow into piston cylinder, piston cylinder side wall is equipped with second check valve, the opening of second check valve is towards venturi mechanism to control clean water from piston cylinder and flow into venturi mechanism, the utility model, by the setting of water tank, U type rod, disc, throat pipe etc., realize continuous uniform medicine spraying while driving spray rod in body oblique rear automatic medicine scattering to evade mis-spray inhalation risk, water tank seals and prevents medicine leakage risk, through spherical valve and throat pipe on venturi mechanism can be flexibly adjusted medicine mixing ratio in medicine spraying process, adapt to different environment, improve operation safety and practicality.

Description

Technical Field

[0001] This utility model relates to the field of agricultural planting equipment, and more specifically, to a pesticide spraying device for agricultural planting. Background Technology

[0002] In agricultural planting and production, in order to effectively prevent and control crop diseases and pests and ensure the normal growth of crops, it is necessary to use spraying devices to spray pesticides on crops. Chinese Patent Publication No. CN114051994B discloses a multi-pesticide spraying device for agricultural planting, including a shell, a fixed frame connected to the middle of the upper part of the shell, a storage tank, three storage tanks evenly connected to the inner side of the fixed frame, a cylinder, a cylinder connected to the middle of the lower part of the shell, a mounting sleeve, three mounting sleeves evenly connected to the outer side of the lower part of the cylinder, and a transmission pipe. Each mounting sleeve is connected to the corresponding storage tank by a transmission pipe. It has the advantages of automatically stirring the pesticide and avoiding blockage, facilitating and stabilizing the adjustment plate to avoid accidental contact, automatically stabilizing the device, and automatically positioning the adjustment plate to ensure stable pesticide spraying.

[0003] In existing technologies, pesticide spraying in agricultural planting is often carried out in two ways: one is by using drones to carry pesticides, but this is expensive and cannot be used in greenhouses or rainy weather, thus having certain limitations; the other is by using traditional backpack sprayers, which has the following problems: existing spraying devices mostly use a hinged rod hinged inside a water tank to achieve the spraying action. The connection between the hinged rod and the water tank needs to be sealed with a sealing sleeve, but after long-term use, the sealing sleeve is prone to damage due to friction wear and aging, causing the pesticide to leak from the connection. There are several issues with the system's operation mode. Firstly, it involves one hand pressing to dispense the pesticide and the other hand holding the sprayer. If the sprayer is accidentally placed in front of the operator and sprays, the atomized pesticide can easily be inhaled, posing a health threat to the lungs and respiratory tract. Secondly, the pesticide is only dispensed when the operator presses the lever and stops when the operator releases the lever, resulting in uneven pesticide coverage on the crop surface. Furthermore, the pesticide is pre-mixed with water in a fixed ratio before spraying, and the ratio cannot be adjusted during spraying, making it less suitable for various applications.

[0004] How to invent a pesticide spraying device for agricultural planting to improve these problems has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] To overcome the above shortcomings, this utility model provides a pesticide spraying device for agricultural planting, which aims to improve the problems of pesticide leakage risk, accidental spraying and inhalation risk, poor spraying uniformity and poor mixing flexibility.

[0006] This utility model is implemented as follows: This utility model provides a pesticide spraying device for agricultural planting, including a water tank. A connecting seat is fixedly installed on the inner wall of the water tank near the back of the user. Piston cylinders for storing and conveying clean water are fixedly connected to both sides of the connecting seat. A first one-way valve is provided on the bottom side of the piston cylinder, with its opening facing the inside of the piston cylinder to control the flow of clean water from the water tank into the piston cylinder. A second one-way valve is provided on the side wall of the piston cylinder, with its opening facing a Venturi mechanism to control the flow of clean water from the piston cylinder into the Venturi mechanism. A pesticide pushing mechanism is mounted on the piston cylinder for pumping clean water. A Venturi mechanism is connected to the second one-way valve of the piston cylinder for mixing clean water and pesticide. A connecting seat is installed on the top side of the middle part of the connecting seat. It has a drug adjustment mechanism to adjust the drug dosage to suit different environments. The top of the water tank is equipped with a spraying mechanism to automatically spray the drug while the body is tilted backward. A transmission mechanism connects the pushing mechanism and the spraying mechanism to convert the linear motion of the pushing mechanism into the oscillating motion of the spraying mechanism. A placement mechanism is slidably provided between the back plate of the pushing mechanism and the water tank to place the spray bar and raincoat. A sponge back pillow is fixed to the side of the back plate near the back to improve carrying comfort. A plastic strap is provided on the water tank for carrying the water tank. The Venturi mechanism is connected to the spraying mechanism through a spraying hose to deliver the mixed drug solution to the spraying mechanism for spraying.

[0007] Furthermore, the drug-pushing mechanism includes a piston slidably disposed inside a piston cylinder. The piston is used to change the internal volume of the piston cylinder. A U-shaped rod is fixedly connected to the top of the piston. One long axis of the U-shaped rod extends through into the piston cylinder, and a straight groove plate is fixedly connected to the top of the other long axis. The straight groove plate is used to convert rotation into linear motion.

[0008] Furthermore, it also includes a perforated plate, which is used to connect the water tank and the back plate and achieve weight reduction. The water tank is fixedly connected to the back plate through the perforated plate. An ear plate is fixed on the back plate, and an L-shaped rod with a lever structure is hinged on the ear plate. A grip for the operator to hold is fixed at the top of the long axis of the L-shaped rod. A drive shaft is fixed on one side of the short axis of the L-shaped rod. The drive shaft is slidably installed in the straight groove of the straight groove plate. A limit cylinder is fixed on the perforated plate. The limit cylinder is used for guiding and limiting. The other side of the long axis of the U-shaped rod is slidably disposed in the limit cylinder.

[0009] Furthermore, the Venturi mechanism includes a flared tube fixedly connected to the second one-way valve on the side wall of the piston cylinder. The flared tube is used to smoothly transition the water flow. A throat is fixedly connected to the end of the flared tube away from the piston cylinder. The throat is used to generate the Venturi effect. The same mixing tube is fixedly connected to the adjacent sides of the two throats. The mixing tube is used to collect the mixed medicine solution. The mixing tube is connected to the spraying hose.

[0010] Furthermore, the drug adjustment mechanism includes a drug box fixedly installed on the top side of the middle part of the connecting seat, a connecting pipe fixedly connected to the bottom side of the drug box, a ball valve mounted on the connecting pipe for controlling the drug flow, an adjustment chamber fixedly connected to the bottom side of the connecting pipe for buffering and temporarily storing the drug, and connecting hoses symmetrically fixed at the bottom of the adjustment chamber for connecting to the throat tubes, with the ends of the two connecting hoses away from the adjustment chambers respectively fixedly connected to the two throat tubes.

[0011] Furthermore, the spraying mechanism includes two rotating tubes rotatably mounted on the top of the water tank. The rotating tubes are used to drive the spray bar to swing. Each rotating tube is fixed with an arc-shaped curved rail, which supports the spray bar. An arc-shaped cover is slidably provided on the top side of the arc-shaped curved rail, which is used to clamp the spray bar in cooperation with the arc-shaped curved rail. A base is fixed on the arc-shaped curved rail, and a threaded rod is rotatably connected to the base. The threaded rod is threadedly connected to the arc-shaped cover and is used to drive the arc-shaped cover to move. The spray bar is clamped between the arc-shaped curved rail and the arc-shaped cover, and the spray bar is used to spray out the liquid medicine.

[0012] Furthermore, the spraying mechanism also includes a spraying hose, which is rotatably fitted inside a rotating tube, with one end of the spraying hose connected to a mixing tube and the other end connected to a spray bar.

[0013] Furthermore, the transmission mechanism includes two disc seats symmetrically fixed to the top side of the water tank. The disc seats support the discs, and a disc is rotatably connected to each disc seat. A transmission rod is fixed to the side of the disc near the U-shaped rod. The transmission rod is used to transmit linear motion. A sliding groove is provided on the short shaft in the middle of the U-shaped rod. The sliding groove is used to accommodate the sliding of the transmission rod. The transmission rod is slidably disposed in the sliding groove. A telescopic rod is slidably connected to the disc at a position symmetrical to the transmission rod. The telescopic rod is used to adapt to the movement distance. A sliding sleeve is fixed to the end of the telescopic rod away from the disc. The sliding sleeve is used for sliding transmission. A sliding rod is slidably disposed inside the sliding sleeve. The sliding rod is used to provide a sliding track. Limiting ear plates are fixed to both ends of the sliding rod. The limiting ear plates are used to drive the rotating tube to swing. The limiting ear plates are fixedly connected to the rotating tube.

[0014] Furthermore, the placement mechanism includes a drawer slidably disposed between the back panel and the water tank, the drawer being used to store supplies, a T-shaped groove being provided on the outer wall of the bottom side of the drawer, a T-shaped block being fixed on the water tank to cooperate with the T-shaped groove, the T-shaped block being slidably disposed in the T-shaped groove, a placement block being fixed on one side perforated plate, the placement block being used to place the spray bar, and a placement port being provided on the placement block for inserting the spray bar.

[0015] Furthermore, the sponge back pillow is made of flexible sponge material and its shape is adapted to fit the human back. The molding band is made of elastic molding material and its two ends are fixedly connected to the top and bottom of the back panel, respectively.

[0016] The beneficial effects of this utility model are: By using a water tank, a piston cylinder equipped with a first and a second one-way valve, and a push-push mechanism driven by alternating hands, the water tank is completely sealed, structurally eliminating the risk of leakage. When the operator alternately presses down and lifts the lever, it drives the L-shaped and U-shaped rods to drive the piston to reciprocate within the piston cylinder. This causes the two piston cylinders to alternately draw clean water from the water tank and deliver clean water to the Venturi mechanism, avoiding the intermittent dispensing mode of traditional single-handed pressing. This provides a continuous water source for subsequent mixing and spraying of the pesticide solution, achieving the function of continuous and uniform spraying.

[0017] By incorporating a pesticide cartridge, connecting pipe, ball valve, regulating chamber, connecting hose, and mixing pipe, the system allows for the control of pesticide flow rate by changing the cross-sectional area of ​​the connecting pipe when the ball valve is rotated. When clean water flows through the throat of the Venturi mechanism, the increased flow velocity generates negative pressure, drawing the corresponding dosage of pesticide from the regulating chamber through the connecting hose. After the pesticide and clean water are fully mixed in the mixing pipe, they are delivered to the spray bar via the spraying hose. This system enables flexible adjustment of the pesticide mixing ratio during spraying, adapting to different agricultural planting environments such as different crops and different pest and disease conditions.

[0018] By setting up a disc base, disc, transmission rod, telescopic rod, etc., the U-shaped rod of the medicine pushing mechanism moves up and down, driving the transmission rod to slide in the sliding groove to drive the disc to rotate. Through the telescopic rod and sliding sleeve, the rotating tube drives the spray bar to automatically swing and spray medicine at a certain angle behind the body, avoiding the risk of inhalation from accidental spraying from the front of the body. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a pesticide spraying device for agricultural planting provided by an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a water tank for removing pesticides used in agricultural planting, provided by an embodiment of this utility model. Figure 3 This is a cross-sectional structural schematic diagram of a water tank for a pesticide spraying device used in agricultural planting, provided by an embodiment of this utility model. Figure 4 This is a partial structural schematic diagram of a pesticide spraying device for agricultural planting provided by an embodiment of the present invention; Figure 5This is a cross-sectional structural schematic diagram of a mixing tube for a pesticide spraying device used in agricultural planting, provided by an embodiment of this utility model. Figure 6 This is a cross-sectional view of the piston cylinder of a pesticide spraying device for agricultural planting provided by an embodiment of this utility model. Figure 7 This is a schematic diagram of the structure of the back plate of a pesticide spraying device for agricultural planting provided by an embodiment of this utility model.

[0021] In the diagram: 1. Water tank; 2. Connecting seat; 3. Piston cylinder; 4. Drug pushing mechanism; 401. Piston; 402. U-shaped rod; 403. Straight groove plate; 404. Orifice plate; 405. Back plate; 406. Ear plate; 407. L-shaped rod; 408. Handle rod; 409. Drive shaft; 410. Limiting cylinder; 5. Venturi mechanism; 501. Flared tube; 502. Throat tube; 503. Mixing tube; 6. Drug adjusting mechanism; 601. Drug box; 602. Connecting tube; 603. Ball valve; 604. Adjusting chamber; 605. Connecting hose; 7. Spraying mechanism; 701. Rotating tube; 702. 703. Arc-shaped curved rail; 704. Arc cover; 705. Base; 706. Threaded rod; 707. Spray bar; 708. Spray hose; 809. Transmission mechanism; 8001. Disc seat; 802. Disc; 803. Transmission rod; 804. Sliding groove; 805. Telescopic rod; 806. Sliding sleeve; 807. Sliding rod; 808. Limiting ear plate; 909. Placement mechanism; 901. Drawer; 902. Pull block; 903. T-block; 904. T-slot; 905. Placement block; 906. Placement opening; 10. Sponge backrest; 11. First one-way valve; 12. Second one-way valve; 13. Plastic belt. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Example Reference Figures 1-7A pesticide spraying device for agricultural planting includes a water tank 1. A connecting seat 2 is fixedly installed on the inner wall of the water tank 1 near the back of the user. Piston cylinders 3 for storing and conveying clean water are fixedly connected to both sides of the connecting seat 2. A first one-way valve 11 is provided on the bottom side of the piston cylinder 3, with the opening of the first one-way valve 11 facing the inside of the piston cylinder 3 to control the flow of clean water from the water tank 1 into the piston cylinder 3. A second one-way valve 12 is provided on the side wall of the piston cylinder 3, with the opening of the second one-way valve 12 facing the Venturi mechanism 5 to control the flow of clean water from the piston cylinder 3 into the Venturi mechanism 5. A pesticide pushing mechanism 4 is mounted on the piston cylinder 3 for pumping clean water. The Venturi mechanism 5 is connected to the second one-way valve 12 of the piston cylinder 3 for mixing clean water and pesticide. A pesticide adjusting mechanism 6 is installed on the top side of the middle part of the connecting seat 2. The drug adjustment mechanism 6 is used to adjust the drug dosage to adapt to different environments. The top of the water tank 1 is equipped with a spraying mechanism 7, which is used to automatically swing and spray the drug from the rear of the human body. The push mechanism 4 and the spraying mechanism 7 are connected by a transmission mechanism 8, which is used to convert the linear motion of the push mechanism 4 into the swing motion of the spraying mechanism 7. The back plate 405 of the push mechanism 4 is slidably provided with a placement mechanism 9 between it and the water tank 1. The placement mechanism 9 is used to place the spray bar 706 and the raincoat. A sponge back pillow 10 is fixed on the side of the back plate 405 near the back, which is used to improve carrying comfort. The water tank 1 is provided with a plastic belt 13, which is used to carry the water tank 1. The venturi mechanism 5 is connected to the spraying mechanism 7 through a spraying hose 707 to deliver the mixed drug solution to the spraying mechanism 7 for spraying.

[0024] The water tank 1 adopts an overall sealed structure to prevent leakage. The connecting seat 2 serves as the core mounting base, enabling the integrated installation of the piston cylinder 3 and the agent adjustment mechanism 6. This ensures the precise positioning of each component and guarantees coordinated operation. The piston cylinder 3 forms a one-way water supply path through the first one-way valve 11 and the second one-way valve 12, preventing backflow of clean water and providing a foundation for continuous drug supply. The pushing mechanism 4 provides power to drive the pumping of clean water. The venturi mechanism 5 enables the mixing of the agent and clean water. The agent adjustment mechanism 6 dynamically adjusts the ratio. The spraying mechanism 7 enables oblique rearward swing spraying. The transmission mechanism 8 enables the conversion of motion forms. The placement mechanism 9, the sponge backrest 10, and the plastic belt 13 enhance practicality and comfort.

[0025] Reference Figures 1-7 In this embodiment of the present invention, the drug pushing mechanism 4 includes a piston 401 slidably disposed in the piston cylinder 3. The piston 401 is used to change the internal volume of the piston cylinder 3. A U-shaped rod 402 is fixedly connected to the top of the piston 401. One long shaft of the U-shaped rod 402 extends through into the piston cylinder 3, and a straight groove plate 403 is fixedly connected to the top of the other long shaft. The straight groove plate 403 is used to convert rotation into linear motion.

[0026] The piston 401 fits tightly against the inner wall of the piston cylinder 3. By moving up and down, it changes the internal volume of the piston cylinder 3, thereby enabling the intake and discharge of clean water. The U-shaped rod 402 connects the piston 401 and the straight groove plate 403, which plays a role in motion transmission. The straight groove plate 403 cooperates with the subsequent transmission shaft 409 through the straight groove, which can convert the rotation of the transmission shaft 409 into its own linear motion, thereby driving the U-shaped rod 402 and the piston 401 to move.

[0027] Reference Figures 1-7 In this embodiment of the utility model, a perforated plate 404 is also included. The perforated plate 404 is used to connect the water tank 1 and the back plate 405 and to reduce weight. The water tank 1 is fixedly connected to the back plate 405 through the perforated plate 404. An ear plate 406 is fixed on the back plate 405. An L-shaped rod 407 with a lever structure is hinged on the ear plate 406. A grip bar 408 for the operator to hold is fixed at the top of the long shaft of the L-shaped rod 407. A transmission shaft 409 is fixed on one side of the short shaft of the L-shaped rod 407. The transmission shaft 409 is slidably installed in the straight groove of the straight groove plate 403. A limiting cylinder 410 is fixed on the perforated plate 404. The limiting cylinder 410 is used for guiding and limiting. The other side of the long shaft of the U-shaped rod 402 is slidably disposed in the limiting cylinder 410.

[0028] The perforated plate 404 connects the water tank 1 and the back plate 405, achieving a fixed connection while reducing weight and carrying burden through the hollow structure. The ear plate 406 provides a hinge fulcrum for the L-shaped rod 407, allowing the L-shaped rod 407 to rotate around the ear plate 406, forming a lever structure. The operator holds the handle 408 to drive the L-shaped rod 407 to rotate. The drive shaft 409 of the short shaft of the L-shaped rod 407 slides in the straight groove of the straight groove plate 403, driving the straight groove plate 403 to move linearly. The limiting cylinder 410 limits the movement direction of the U-shaped rod 402 to prevent the U-shaped rod 402 from deviating, ensuring that the piston 401 always moves along the axis of the piston cylinder 3, avoiding sealing failure or increased friction due to deviation.

[0029] Reference Figures 1-6 In this embodiment of the present invention, the Venturi mechanism 5 includes a flared pipe 501 fixedly connected to the second one-way valve 12 on the side wall of the piston cylinder 3. The flared pipe 501 is used to smoothly transition the water flow. A throat 502 is fixedly connected to one end of the flared pipe 501 away from the piston cylinder 3. The throat 502 is used to generate the Venturi effect. The same mixing pipe 503 is fixedly connected to the adjacent sides of the two throats 502. The mixing pipe 503 is used to collect the mixed medicine liquid. The mixing pipe 503 is connected to the spraying hose 707.

[0030] The flared pipe 501 connects to the second one-way valve 12 of the piston cylinder 3. Its diameter gradually increases from one end near the piston cylinder 3 to the other end, which can smoothly transfer the clean water flowing out of the piston cylinder 3, reducing water flow resistance and turbulence. The throat pipe 502 has a smaller diameter. When the clean water flows through the throat pipe 502, the flow velocity increases sharply and the pressure decreases, generating a negative pressure Venturi effect, which then draws the agent from the agent regulating mechanism 6 to achieve the initial mixing of clean water and agent. The mixture from both throat pipes 502 flows into the mixing pipe 503, where it is further fully mixed to ensure uniform concentration of the agent. Then, it is delivered to the spraying mechanism 7 through the spraying hose 707.

[0031] Reference Figures 1-6 In this embodiment of the present invention, the drug adjustment mechanism 6 includes a drug box 601 fixedly installed on the top side of the middle part of the connecting seat 2. A connecting pipe 602 is fixedly connected to the bottom side of the drug box 601. A ball valve 603 is installed on the connecting pipe 602. The ball valve 603 is used to control the drug flow rate. An adjustment chamber 604 is fixedly connected to the bottom side of the connecting pipe 602. The adjustment chamber 604 is used to buffer and temporarily store the drug. Connecting hoses 605 are symmetrically fixed at the bottom of the adjustment chamber 604. The connecting hoses 605 are used to connect to the throats 502. The ends of the two connecting hoses 605 away from the adjustment chamber 604 are respectively fixedly connected to the two throats 502.

[0032] The pesticide container 601 stores the pesticide to be mixed, providing a source of pesticide for the spraying process. The connecting pipe 602 transports the pesticide in the pesticide container 601 to the regulating chamber 604. The ball valve 603 is installed on the connecting pipe 602. By rotating the valve core of the ball valve 603, the conduction cross-sectional area of ​​the connecting pipe 602 can be changed, thereby controlling the pesticide flow rate. The larger the conduction cross-sectional area, the larger the pesticide flow rate and the higher the mixing ratio, and vice versa. The regulating chamber 604 acts as a buffer for the pesticide, avoiding uneven pesticide concentration caused by fluctuations in pesticide delivery. The connecting hose 605 transports the pesticide in the regulating chamber 604 to the two throats 502 to ensure that the pesticide concentration of the two spray bars 706 is consistent.

[0033] Reference Figures 1-4 In this embodiment of the present invention, the spraying mechanism 7 includes two rotating tubes 701 rotatably mounted on the top of the water tank 1. The rotating tubes 701 are used to drive the spray bar 706 to swing. Each rotating tube 701 is fixed with an arc-shaped curved rail 702, which supports the spray bar 706. An arc cover 703 is slidably provided on the top side of the arc-shaped curved rail 702. The arc cover 703 is used to cooperate with the arc-shaped curved rail 702 to clamp the spray bar 706. A base 704 is fixed on the arc-shaped curved rail 702. A threaded rod 705 is rotatably connected to the base 704. The threaded rod 705 is threadedly connected to the arc cover 703 and is used to drive the arc cover 703 to move. The spray bar 706 is clamped between the arc-shaped curved rail 702 and the arc cover 703, and the spray bar 706 is used to spray out the liquid medicine.

[0034] The rotating tube 701 is rotatably mounted on the top of the water tank 1 and can rotate around its own axis, providing a basis for the swing of the spray bar 706. The arc-shaped curved rail 702 is fixed on the rotating tube 701, and its arc-shaped structure is adapted to the outer wall of the spray bar 706 to support the spray bar 706. The arc cover 703 is slidably disposed on the top side of the arc-shaped curved rail 702, and forms a clamping space by cooperating with the arc-shaped curved rail 702 to fix the spray bar 706. The base 704 is fixed on the arc-shaped curved rail 702 to provide threaded support for the threaded rod 705. The threaded rod 705 is threadedly connected to the base 704, and its top end is rotatably connected to the arc cover 703. By rotating the threaded rod 705, the arc cover 703 can be driven to slide along the arc-shaped curved rail 702 to realize the clamping or disassembly of the spray bar 706, which facilitates the replacement and maintenance of the spray bar 706.

[0035] Reference Figures 1-4 In this embodiment of the present invention, the spraying mechanism 7 further includes a spraying hose 707, which is rotatably sleeved inside the rotating tube 701, and one end of the spraying hose 707 is connected to the mixing tube 503, and the other end is connected to the spray bar 706.

[0036] The spraying hose 707 is made of flexible material and is rotatably fitted inside the rotating tube 701. One end is connected to the mixing tube 503 and the other end is connected to the spray bar 706. It is used to transport the mixed liquid in the mixing tube 503 to the spray bar 706. Because the spraying hose 707 is flexible and rotatable, when the spray bar 706 swings with the rotating tube 701, the spraying hose 707 can bend or rotate accordingly without hindering the swing of the spray bar 706, while ensuring continuous delivery of the liquid.

[0037] Reference Figures 1-5 In this embodiment of the invention, the transmission mechanism 8 includes two disc seats 801 symmetrically fixed to the top side of the water tank 1. The disc seats 801 support discs 802, and each disc seat 801 is rotatably connected to a disc 802. A transmission rod 803 is fixed to the side of the disc 802 near the U-shaped rod 402. The transmission rod 803 transmits linear motion. A sliding groove 804 is provided on the short shaft in the middle of the rod 402. The sliding groove 804 is used to accommodate the sliding of the transmission rod 803. The transmission rod 803 is slidably disposed in the sliding groove 804. A telescopic rod 805 is slidably connected to the disc 802 at a position symmetrical to the transmission rod 803. The telescopic rod 805 is used to adapt to the movement distance. A sliding sleeve 806 is fixed to the end of the telescopic rod 805 away from the disc 802. The sliding sleeve 806 is used for sliding transmission. A sliding rod 807 is slidably disposed in the sliding sleeve 806. The sliding rod 807 is used to provide a sliding track. Limiting ear plates 808 are fixed to both ends of the sliding rod 807. The limiting ear plates 808 are used to drive the rotating tube 701 to swing. The limiting ear plates 808 are fixedly connected to the rotating tube 701.

[0038] The disc base 801 is symmetrically fixed to the top side of the water tank 1, providing rotational support for the disc 802. The disc 802 is rotatably connected to the disc base 801 and can rotate around the central axis of the disc base 801. The transmission rod 803 is fixed to the side of the disc 802 near the U-shaped rod 402 and is slidably disposed in the sliding groove 804 of the U-shaped rod 402. When the U-shaped rod 402 moves up and down linearly, the sliding groove 804 drives the transmission rod 803 to move, thereby causing the disc 802 to rotate around the disc base 801. The telescopic rod 805 is slidably connected to the disc 802 at a position symmetrical to the center of the transmission rod 803. It can extend and retract radially along the disc 802 to adapt to the change in distance between the disc 802 and the sliding sleeve 806 during the rotation of the disc 802. The sliding sleeve 806 is fixed to the end of the telescopic rod 805 away from the disc 802 and is slidably disposed on the sliding rod 807, allowing it to slide along the sliding rod 807. The sliding rod 807 provides sliding support for the sliding sleeve 806. The track is fixedly connected to the rotating tube 701 at both ends by limiting ear plates 808. When the disc 802 rotates, the telescopic rod 805 drives the sliding sleeve 806 to slide back and forth along the sliding rod 807, and then drives the rotating tube 701 to swing back and forth through the limiting ear plates 808, thus realizing the swing spraying of the spray boom 706. No additional power source is required. The movement of the push mechanism 4 drives the spraying mechanism 7 to swing, saving energy. The design of the telescopic rod 805 can adapt to the distance changes during the movement, ensuring continuous and smooth movement transmission, realizing the stable swing of the spray boom 706, and improving the uniformity of spraying.

[0039] Reference Figures 1-5 In this embodiment of the utility model, the placement mechanism 9 includes a drawer 901 slidably disposed between the back plate 405 and the water tank 1. The drawer 901 is used to store items. A T-shaped groove 904 is provided on the bottom outer wall of the drawer 901. A T-shaped block 903 that cooperates with the T-shaped groove 904 is fixed on the water tank 1. The T-shaped block 903 is slidably disposed in the T-shaped groove 904. A placement block 905 is fixed on one side of the perforated plate 404. The placement block 905 is used to place the spray bar 706. A placement port 906 for inserting the spray bar 706 is provided on the placement block 905.

[0040] Drawer 901 is slidably positioned between back panel 405 and water tank 1, used to store spraying auxiliary supplies such as raincoats and gloves for easy carrying. The T-slot 904 on the bottom outer wall of drawer 901 engages with the T-block 903 on water tank 1, providing guidance for the sliding of drawer 901, ensuring smooth opening and closing and preventing misalignment. Placement block 905 is fixed to a perforated plate 404 on one side, with a placement opening 906 that matches the spray boom 706. After spraying, the spray boom 706 can be inserted into the placement opening 906, preventing damage or loss due to careless placement. Reference Figures 1-7In this embodiment of the utility model, the sponge back pillow 10 is made of flexible sponge material and its shape fits the human back. The plastic band 13 is made of elastic plastic material and its two ends are fixedly connected to the top and bottom of the back panel 405, respectively.

[0041] The sponge back pillow 10 is made of flexible sponge material and its shape is adapted to the curve of the human back. It is fixed to the side surface of the back panel 405 near the back. When the operator carries the device, the sponge back pillow 10 can cushion the pressure of the back panel 405 on the back and reduce back fatigue caused by carrying for a long time. The shaping strap 13 is made of elastic shaping material and its two ends are fixed to the top and bottom of the back panel 405 respectively. The operator can fix the device to the back through the shaping strap 13. The elastic material can adapt to different operator body shapes to ensure that carrying is stable and comfortable.

[0042] Working principle: Open the water inlet of water tank 1 and add sufficient clean water to water tank 1. Close the water inlet. Open the dosing port of pesticide box 601 and add the required pesticide to pesticide box 601. Close the dosing port. Adjust the mixing ratio. According to the variety, growth stage and severity of pests and diseases of the crop to be sprayed, rotate the ball valve 603 of pesticide adjustment mechanism 6 to complete the mixing ratio adjustment. Place the spray bar 706 on the arc-shaped curved rail 702 of spraying mechanism 7, ensuring that the inlet of spray bar 706 is aligned and connected with the outlet of spray hose 707. Rotate the threaded rod of base 704 on arc-shaped curved rail 702 clockwise. 705. Drive the arc cover 703 to slide along the arc-shaped curved rail 702 until the arc cover 703 and the arc-shaped curved rail 702 clamp the spray bar 706 together, ensuring that the spray bar 706 is firmly fixed and not loose. The operator puts the plastic strap 13 on the shoulder, so that the sponge back pillow 10 on the back plate 405 fits against the back. Adjust the tightness of the plastic strap 13 to ensure that the device is carried stably without obvious shaking, and at the same time there is no pressure or discomfort on the back. The operator holds the handles 408 of the two sides of the drug pushing mechanism 4 with both hands and performs alternating pressing and lifting operations. The specific process is as follows: pumping water on one side and delivering water on the other side. When the left hand presses down the handle 408, the left side L L-shaped rod 407 rotates clockwise around ear plate 406. Drive shaft 409 on the short shaft side of L-shaped rod 407 slides upward within the straight groove of straight groove plate 403, causing straight groove plate 403 to move upward along limiting cylinder 410. Straight groove plate 403 drives U-shaped rod 402 to slide upward, which in turn drives left piston 401 to move upward within piston cylinder 3. At this time, the pressure inside left piston cylinder 3 decreases, the first one-way valve 11 on the bottom side opens, and the second one-way valve 12 on the side wall closes. Clean water in water tank 1 enters left piston cylinder 3 through the first one-way valve 11, completing the pumping. Simultaneously, right hand raises grip rod 408, and right L-shaped rod 407 rotates counterclockwise around ear plate 406. Right drive shaft 409 slides downward within the straight groove of straight groove plate 403, driving right straight groove plate 403 and U-shaped rod 402 to slide upward. As the piston rod 402 and piston 401 move downwards, the pressure inside the right piston cylinder 3 increases. The first one-way valve 11 on the bottom closes, and the second one-way valve 12 on the side wall opens. The clean water inside the right piston cylinder 3 enters the Venturi mechanism 5 through the second one-way valve 12, completing the water delivery. After entering the flared pipe 501 of the Venturi mechanism 5, the clean water smoothly transitions to the throat pipe 502. As the clean water flows through the throat pipe 502, the flow rate increases and the pressure decreases, generating negative pressure. The agent is drawn from the regulating chamber 604 through the connecting hose 605. After the agent and clean water are initially mixed in the throat pipe 502, they flow into the mixing pipe 503 for further uniform mixing. The mixed solution is then delivered to the spray bar 706 through the spray hose 707 and atomized from the nozzle of the spray bar 706. The operator continuously performs alternating downward and upward pressure on the lever 408 with both hands, and the two piston cylinders 3 alternately complete the "pumping-delivering" water operation. The venturi mechanism 5 continuously outputs the mixed pesticide solution, and the spray bar 706 achieves continuous spraying. During the up-and-down movement of the U-shaped rod 402...The sliding groove 804 of the short shaft in the middle of the U-shaped rod 402 drives the transmission rod 803 of the transmission mechanism 8 to move, causing the disc 802 to reciprocate around the disc seat 801. When the disc 802 rotates, the telescopic rod 805 at its central symmetrical position drives the sliding sleeve 806 to slide back and forth along the sliding rod 807. The sliding sleeve 806 drives the rotating tube 701 to swing back and forth through the limiting ear plate 808, thereby driving the spray boom 706 to swing at a certain angle behind the operator's body to spray pesticide, expand the pesticide coverage area, and ensure uniform spraying of crops. If it is necessary to increase the spraying pressure, such as spraying the top of tall crops, the operator can press down on the lever 408 with both hands at the same time, so that the pistons 401 on both sides move downward at the same time. The piston cylinders on both sides simultaneously send water to the Venturi mechanism 5, increasing the pressure of the pesticide in the mixing tube 503, and the spray boom... The spraying distance and atomization effect of 706 are improved to meet the needs of high-pressure spraying. After spraying, stop the pesticide delivery. After the spraying operation is completed, turn the ball valve 603 of the pesticide adjustment mechanism 6 counterclockwise to close the connecting pipe 602 and stop the pesticide delivery. Continue to raise the lever 408 to deliver the remaining water in the piston cylinder 3 to the Venturi mechanism 5, which discharges it through the spray rod 706, emptying the residual pesticide in the pipeline. Turn the threaded rod 705 counterclockwise to loosen the arc cover 703, remove the spray rod 706, and insert it into the placement opening 906 of the placement block 905 of the placement mechanism 9 to complete the storage of the spray rod 706. Pull outwards the drawer 901 of the placement mechanism 9 to place raincoats, gloves, and other auxiliary supplies into the drawer 901. Push the drawer 901 back to its original position, allowing it to slide between the back panel 405 and the water tank 1.

[0043] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail here.

[0044] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pesticide spraying device for agricultural planting, comprising a water tank (1), characterized in that, A connecting seat (2) is fixedly installed on the inner wall of the water tank (1) near the back of the human body. Piston cylinders (3) for storing and transporting clean water are fixedly connected to both sides of the connecting seat (2). A first one-way valve (11) is provided on the bottom side of the piston cylinder (3). The opening of the first one-way valve (11) faces the inside of the piston cylinder (3) to control the flow of clean water from the water tank (1) into the piston cylinder (3). A second one-way valve (12) is provided on the side wall of the piston cylinder (3). The opening of the second one-way valve (12) faces the Venturi mechanism (5) to control the flow of clean water from the piston cylinder (3) into the Venturi mechanism (5). A drug pushing mechanism (4) is mounted on the piston cylinder (3). The drug pushing mechanism (4) is used to pump clean water. A Venturi mechanism (5) is connected to the second one-way valve (12) of the piston cylinder (3). The Venturi mechanism (5) is used to mix clean water and medicine. A medicine adjusting mechanism (6) is installed on the top side of the middle part of the connecting seat (2). The medicine adjusting mechanism (6) is used to adjust The dosage of medicine is adapted to different environments. The top of the water tank (1) is equipped with a spraying mechanism (7). The spraying mechanism (7) is used to realize automatic swinging spraying of medicine at the human body at an angle. The push mechanism (4) and the spraying mechanism (7) are connected by a transmission mechanism (8). The transmission mechanism (8) is used to convert the linear motion of the push mechanism (4) into the swinging motion of the spraying mechanism (7). The back plate (405) of the push mechanism (4) and the water tank (1) are slidably provided with a placement mechanism (9). The placement mechanism (9) is used to place the spray bar (706) and the raincoat. A sponge back pillow (10) is fixed on the side surface of the back plate (405) near the back. The sponge back pillow (10) is used to improve the carrying comfort. A plastic belt (13) is provided on the water tank (1). The plastic belt (13) is used to carry the water tank (1). The Venturi mechanism (5) and the spraying mechanism (7) are connected through a spraying hose (707) to deliver the mixed medicine to the spraying mechanism (7) for spraying.

2. The pesticide spraying device for agricultural planting according to claim 1, characterized in that, The drug pushing mechanism (4) includes a piston (401) slidably disposed in the piston cylinder (3). The piston (401) is used to change the internal volume of the piston cylinder (3). A U-shaped rod (402) is fixedly connected to the top of the piston (401). One long shaft of the U-shaped rod (402) extends through into the piston cylinder (3), and a straight groove plate (403) is fixedly connected to the top of the other long shaft. The straight groove plate (403) is used to convert rotation into linear motion.

3. The pesticide spraying device for agricultural planting according to claim 2, characterized in that, It also includes a perforated plate (404), which is used to connect the water tank (1) and the back plate (405) and reduce weight. The water tank (1) is fixedly connected to the back plate (405) through the perforated plate (404). An ear plate (406) is fixed on the back plate (405). An L-shaped rod (407) with a lever structure is hinged on the ear plate (406). A grip bar (408) for the operator to hold is fixed at the top of the long shaft of the L-shaped rod (407). A drive shaft (409) is fixed on one side of the short shaft of the L-shaped rod (407). The drive shaft (409) is slidably installed in the straight groove of the straight groove plate (403). A limiting cylinder (410) is fixed on the perforated plate (404). The limiting cylinder (410) is used for guiding and limiting. The long shaft on the other side of the U-shaped rod (402) is slidably installed in the limiting cylinder (410).

4. The pesticide spraying device for agricultural planting according to claim 3, characterized in that, The Venturi mechanism (5) includes a flared pipe (501) fixedly connected to the second one-way valve (12) on the side wall of the piston cylinder (3). The flared pipe (501) is used to smoothly transition the water flow. A throat (502) is fixedly connected to one end of the flared pipe (501) away from the piston cylinder (3). The throat (502) is used to generate the Venturi effect. The same mixing pipe (503) is fixedly connected to the adjacent sides of the two throats (502). The mixing pipe (503) is used to collect the mixed drug solution. The mixing pipe (503) is connected to the spraying hose (707).

5. The pesticide spraying device for agricultural planting according to claim 4, characterized in that, The drug adjustment mechanism (6) includes a drug box (601) fixedly installed on the top side of the middle part of the connecting seat (2). A connecting pipe (602) is fixedly connected to the bottom side of the drug box (601). A ball valve (603) is installed on the connecting pipe (602). The ball valve (603) is used to control the drug flow rate. An adjustment chamber (604) is fixedly connected to the bottom side of the connecting pipe (602). The adjustment chamber (604) is used to buffer and temporarily store the drug. Connecting hoses (605) are symmetrically fixed at the bottom of the adjustment chamber (604). The connecting hoses (605) are used to connect to the throat (502). The ends of the two connecting hoses (605) away from the adjustment chamber (604) are fixedly connected to the two throats (502) respectively.

6. The pesticide spraying device for agricultural planting according to claim 5, characterized in that, The spraying mechanism (7) includes two rotating tubes (701) rotatably mounted on the top of the water tank (1). The rotating tubes (701) are used to drive the spray bar (706) to swing. Each rotating tube (701) is fixed with an arc-shaped curved rail (702). The arc-shaped curved rail (702) is used to support the spray bar (706). An arc cover (703) is slidably provided on the top side of the arc-shaped curved rail (702). The arc cover (703) is used to cooperate with the arc-shaped curved rail (702) to clamp the spray bar (706). A base (704) is fixed on the arc-shaped curved rail (702). A threaded rod (705) is rotatably connected to the base (704). The threaded rod (705) is threadedly connected to the arc cover (703). The threaded rod (705) is used to drive the arc cover (703) to move. The spray bar (706) is clamped between the arc-shaped curved rail (702) and the arc cover (703). The spray bar (706) is used to spray out the liquid medicine.

7. The pesticide spraying device for agricultural planting according to claim 6, characterized in that, The spraying mechanism (7) also includes a spraying hose (707), which is rotatably fitted inside the rotating tube (701). One end of the spraying hose (707) is connected to the mixing tube (503), and the other end is connected to the spray bar (706).

8. The pesticide spraying device for agricultural planting according to claim 7, characterized in that, The transmission mechanism (8) includes two disc seats (801) symmetrically fixed to the top side of the water tank (1). The disc seats (801) support the discs (802). Each disc seat (801) is rotatably connected to a disc (802). A transmission rod (803) is fixed to the side of the disc (802) near the U-shaped rod (402). The transmission rod (803) is used to transmit linear motion. A sliding groove (804) is provided on the short shaft in the middle of the rod (402). The sliding groove (804) is used to accommodate the sliding of the transmission rod (803). The transmission rod (803) is slidably disposed in the sliding groove (804). A telescopic rod (805) is slidably connected on the disc (802) at a position symmetrical to the transmission rod (803). The telescopic rod (805) is used to adapt to the movement distance. A sliding sleeve (806) is fixed at one end of the telescopic rod (805) away from the disc (802). The sliding sleeve (806) is used for sliding transmission. A sliding rod (807) is slidably disposed inside the sliding sleeve (806). The sliding rod (807) is used to provide a sliding track. Limiting ear plates (808) are fixed at both ends of the sliding rod (807). The limiting ear plates (808) are used to drive the rotating tube (701) to swing. The limiting ear plates (808) are fixedly connected to the rotating tube (701).

9. The pesticide spraying device for agricultural planting according to claim 8, characterized in that, The placement mechanism (9) includes a drawer (901) slidably disposed between the back plate (405) and the water tank (1). The drawer (901) is used to store supplies. A T-shaped groove (904) is provided on the bottom outer wall of the drawer (901). A T-shaped block (903) that mates with the T-shaped groove (904) is fixed on the water tank (1). The T-shaped block (903) is slidably disposed in the T-shaped groove (904). A placement block (905) is fixed on one side of the perforated plate (404). The placement block (905) is used to place the spray bar (706). A placement port (906) for inserting the spray bar (706) is provided on the placement block (905).

10. The pesticide spraying device for agricultural planting according to claim 9, characterized in that, The sponge back pillow (10) is made of flexible sponge material and its shape fits the back of the human body. The plastic band (13) is made of elastic plastic material and its two ends are fixedly connected to the top and bottom of the back panel (405).

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