Adjustable forestry pest control pesticide spraying device

Abstract

The invention relates to the technical field of pesticide spraying devices, and provides an adjustable forestry pest control pesticide spraying device which comprises a cart, a fixing ring is fixedly arranged on the cart, a pesticide storage tank is fixedly connected into the fixing ring, and the pesticide storage tank is used for storing pesticide substitutes. A first connecting pipe, a second connecting pipe and a third connecting pipe are arranged on the pesticide storage tank in a communicating mode, a powder pump is installed on the second connecting pipe, a first connecting cylinder is arranged above the powder pump, a pesticide spraying assembly is installed on the first connecting cylinder, a pressing rod is installed on the pesticide spraying assembly, and a protruding plate is fixedly connected to the third connecting pipe. A first spring is fixedly arranged on the protruding plate, and a second connecting cylinder is slidably mounted in the third connecting pipe. By means of the technical scheme, the problems that according to an existing medicine spraying device, the medicine spraying range of the device cannot be automatically enlarged when the requirement for the medicine spraying amount is increased, and lateral fumigation cannot be conducted through medicine spraying through holes are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of spraying devices, and specifically, to an adjustable spraying device for forestry pest control. Background Art

[0002] Forestry pest control is a key link to ensure the health of forest resources, improve the productivity and quality of forest trees. The occurrence of pests and diseases not only affects the growth and development of trees, but also may lead to the imbalance of the forest ecosystem, posing a serious threat to forest resources and the ecological environment. Spraying devices can improve the overall level of forestry pest control, but there are still some deficiencies in existing spraying devices.

[0003] The invention patent with the publication number CN115380891B discloses a spraying device of a spraying machine, which includes a spraying base, a spraying rod, and a spray head. The spraying rod is vertically arranged on the spraying base, and the spray head is fixedly arranged at the upper end of the spraying rod. The spraying base is slidably arranged on the base of the spraying machine. The spraying device further includes an adjusting mechanism, which is used to drive the spraying base to translate along the width direction of the traveling road surface to adjust the distance between the spray head and the fruit tree. Dial rods are arranged on both sides of the spraying mechanism and are used to detect the position of the fruit tree branches relative to the spraying device. When the two are too close, the branches will block the advancing position of the dial rods. Due to the flexibility of the branches, they will bend backward and drive the dial rods to rotate under the action of friction. The above device solves the problems that when the existing spraying machine is in operation, when the fruit trees are relatively large, some branches will extend beyond the spray heads of the spraying machine, resulting in uneven spraying and affecting the spraying effect. The above device realizes the function of adjusting the spray head by using the branches to push the tube dial rods. However, when in use, it does not have the function of synchronously adjusting the spray head and the spray amount, and cannot automatically increase the spraying range of the device when the spray amount requirement increases. Existing devices usually adjust the spraying range or the spray amount separately and do not have a synchronous adjustment function. Moreover, when the existing spraying device is in use, it cannot utilize the air pressure change in the spraying tank to vibrate and disperse the agglomerated pest control medicine, and the existing spraying device is not convenient to cooperate with the fumigation structure and cannot utilize the spraying through holes to realize the function of lateral fumigation. Summary of the Invention

[0004] The present invention provides an adjustable spraying device for forestry pest control, which solves the problems that the existing spraying device cannot automatically increase the spraying range of the device when the spray amount requirement increases and cannot utilize the air pressure change in the spraying tank to shake the agglomerated pest control medicine.

[0005] The technical solution of the present invention is as follows:

[0006] An adjustable spraying device for forestry pest control, comprising a trolley, on which a fixed ring is fixedly arranged. Inside the fixed ring, a medicine storage tank is fixedly connected. The medicine storage tank is used for storing insecticide substitutes. A first connecting pipe, a second connecting pipe and a third connecting pipe are communicated on the medicine storage tank. A powder pump is installed on the second connecting pipe. Above the powder pump, a first connecting cylinder is arranged. A spraying component is installed on the first connecting cylinder. A pressing rod is installed on the spraying component. A convex plate is fixedly connected to the third connecting pipe. A first spring is fixedly arranged on the convex plate. A second connecting cylinder is slidably installed inside the third connecting pipe. A first supporting component is installed on the second connecting cylinder. A first through hole and a third through hole are opened on the second connecting cylinder. A fourth connecting pipe is communicated on the third connecting pipe. A first connecting ring is installed on the first supporting component. A second supporting component is arranged on the first connecting ring. A rubber supporting plate is fixedly arranged at the bottom of the medicine storage tank. Below the rubber supporting plate, a movable plate is arranged. A first connecting box and a second connecting box are respectively rotatably installed on both sides of the spraying component. Inside the first connecting box and the second connecting box, a lapping block, a conductive plate and a connecting frame are fixedly arranged. A phosphine generator is fixedly arranged on the connecting frame.

[0007] As a preferred solution of the present invention, the trolley, the fixed ring, the medicine storage tank, the first connecting pipe, the second connecting pipe, the third connecting pipe, the fourth connecting pipe and the convex plate are fixedly connected into an integral structure. A pressure relief valve is installed between the fixed ring and the second connecting pipe.

[0008] As a preferred solution of the present invention, a key connection is provided between the second connecting cylinder and the third connecting pipe. The first through hole and the fourth connecting pipe are located on the same side of the second connecting cylinder and the third connecting pipe.

[0009] As a preferred solution of the present invention, the vertical distance from the first through hole to the fourth connecting pipe is equal to the vertical distance from the third through hole to the inside of the medicine storage tank. The inside of the second connecting cylinder is hollow. Both the upper and lower sides of the second connecting cylinder are closed structures.

[0010] As a preferred solution of the present invention, the first supporting component includes a first connecting plate fixedly connected between the second connecting cylinder and the first connecting ring. The first spring is installed between the first connecting plate and the convex plate. A fixed rod is fixedly arranged on the first connecting plate. The bottom of the fixed rod is fixedly connected with a pressing plate. A pressing block is slidably installed on the pressing plate. A second spring is fixedly connected between the pressing plate and the pressing block. The structures of the first supporting component and the second supporting component are the same.

[0011] As a preferred solution of the present invention, a guiding groove is provided on the pressing plate, a guiding block is fixedly connected to the medicine storage tank, the outer wall of the guiding block fits with the inner wall of the guiding groove, inclined cutting surfaces are arranged on both the upper and lower sides of the pressing block, and a lifting structure is formed between the movable plate and the rubber support plate through the pressing block.

[0012] As a preferred solution of the present invention, a sealing block is fixedly connected to the rubber support plate, and an inner groove for the movement of the sealing block is provided on the medicine storage tank.

[0013] As a preferred solution of the present invention, the pressure relief valve includes a rotating shaft rotatably installed on the fixed ring, a rubber rotating plate is fixedly connected to the rotating shaft, and a torsion spring is fixedly arranged between the rotating shaft and the fixed ring.

[0014] As a preferred solution of the present invention, the medicine spraying assembly includes damping shaft cylinders communicated with both sides of the first connecting cylinder, a connecting shell is rotatably installed on the damping shaft cylinder, a sealing plate is fixedly arranged on the connecting shell, a third spring and a rubber baffle are fixedly connected in the connecting shell, second through holes are uniformly arranged on the connecting shell, a second connecting ring is fixedly connected to the connecting shell, and the second connecting ring is fixedly arranged on both sides of the pressing rod.

[0015] As a preferred solution of the present invention, the damping shaft cylinders, the connecting shell and the first connecting cylinder are all communicated with each other, the third spring abuts against the rubber baffle, the rubber baffle abuts against the inner wall of the connecting shell, the first connecting box and the second connecting box are both rotatably installed on the connecting shell, net plates are installed on both the first connecting box and the second connecting box, the positions of the net plates correspond to the positions of each row of the second through holes one by one, a guiding plate is fixedly arranged on the phosphine generator, a rubber connecting block is slidably connected to the first connecting box, a fourth spring is fixedly arranged between the rubber connecting block and the first connecting box, an electric heating tube is fixedly arranged on the conductive plate, a power supply positive contact is arranged on the conductive plate in the first connecting box, and a power supply negative contact is arranged on the conductive plate in the second connecting box.

[0016] The working principle and beneficial effects of the present invention are as follows:

[0017] 1. The device is provided with a first connecting box, a second connecting box and a phosphine generator, realizing the function of efficient fumigation through the medicine spraying through holes. The gas flowing out through the second through holes on the connecting shell can transport the phosphine gas to both sides of the device to achieve the function of preventing and controlling pests and diseases. The electric heating tube on the device can cooperate with the phosphine generator to achieve the fumigation function, solving the problem that the existing medicine spraying device cannot use the medicine spraying through holes for lateral fumigation to prevent and control pests and diseases.

[0018] 2. The device is provided with a medicine spraying component. When the amount of sprayed medicine is moderate, as shown in Figure 4 , the insecticide is only sprayed out through the second through hole in the middle position. When the amount of sprayed medicine increases, the air pressure in the connecting shell will increase, and then push the rubber baffles on both sides inside the connecting shell, so that the second through holes on both sides of the connecting shell gradually change from the closed state to the connected state. At this time, the device can automatically open more second through holes when the amount of sprayed medicine increases, thereby automatically increasing the amount of sprayed medicine while increasing the spraying range, enhancing the practicability of the device.

[0019] 3. The device is provided with a third connecting pipe, a second connecting cylinder, a first through hole and a third through hole. When the device is spraying medicine, the air pressure in the medicine storage tank gradually decreases, and the second connecting cylinder will move downward, making the third through hole communicate with the inside of the medicine storage tank. At the same time, the first through hole communicates with the fourth connecting pipe, which is convenient for subsequent replenishment of diatomaceous earth powder for pest control. And when the air pressure in the medicine storage tank is uniform, under the action of the first spring, the second connecting cylinder will move upward again, and then the pressing block on the first support component intermittently pushes the movable plate upward, using the movable plate to intermittently knock the rubber support plate, so that the agglomerated pest control powder in the rubber support plate can be fully shaken, enhancing the functionality of the device and solving the problem that the existing medicine spraying device cannot use the air pressure change in the medicine spraying tank to break up the agglomeration.

[0020] 4. The device is provided with a first support component and a second support component with the same structure and located on both sides of the movable plate respectively, so that the air pressure in the medicine storage tank acts on the first support component and the second support component at the same time, so that both sides of the movable plate are lifted synchronously, enhancing the stability of the device during operation and facilitating subsequent uniform vibration of the agglomeration at the bottom of the medicine storage tank, enhancing the stability of the device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0022] Figure 1 FIG. is a schematic diagram of the overall structure of an adjustable forestry pest control medicine spraying device of the present invention;

[0023] Figure 2 FIG. is a schematic diagram of the connection structure of the medicine storage tank and the guide block of the present invention;

[0024] Figure 3 FIG. is a schematic diagram of the split structure of the connecting shell and the sealing plate of the present invention;

[0025] Figure 4 FIG. is Figure 3 an enlarged schematic diagram of the structure at A in

[0026] Figure 5It is a schematic diagram of the internal structure of the medicine storage tank of the present invention;

[0027] Figure 6 It is Figure 5 An enlarged schematic diagram of the structure at position B in

[0028] Figure 7 It is Figure 5 An enlarged schematic diagram of the structure at position C in

[0029] Figure 8 It is a schematic diagram of the side view structure of the medicine storage tank of the present invention;

[0030] Figure 9 It is Figure 8 An enlarged schematic diagram of the structure at position D in

[0031] Figure 10 It is a schematic diagram of the connection structure between the medicine storage tank of the present invention and the rubber support plate;

[0032] Figure 11 It is Figure 10 An enlarged schematic diagram of the structure at position E in

[0033] Figure 12 It is a schematic diagram of the disassembly structure of the first connection box and the overlapping block of the present invention;

[0034] Figure 13 It is Figure 12 A schematic diagram of the structure at position F in

[0035] Figure 14 It is Figure 12 A schematic diagram of the structure at position G in

[0036] Figure 15 It is a schematic diagram of the connection structure between the trolley and the fixed ring of the present invention.

[0037] Reference numerals: 1, trolley; 2, fixed ring; 3, medicine storage tank; 4, first connecting pipe; 5, second connecting pipe; 6, powder pump; 7, first connecting cylinder; 8, third connecting pipe; 9, second connecting cylinder; 10, fourth connecting pipe; 11, convex plate; 12, first spring; 13, first through hole; 14, first support assembly; 1401, first connecting plate; 1402, fixed rod; 1403, pressing plate; 1404, pressing block; 1405, second spring; 15, first connecting ring; 16, second support assembly; 17, guide block; 18, guide groove; 19, movable plate; 20, rubber support plate; 21, sealing block; 22, inner groove; 23, guide post; 24, pressure relief valve; 2401, rubber rotating plate; 2402, rotating shaft; 2403, torsion spring; 25, medicine spraying assembly; 2501, damping shaft cylinder; 2502, connecting shell; 2503, sealing plate; 2504, third spring; 2505, rubber baffle; 2506, second through hole; 2507, second connecting ring; 26, pressing rod; 27, damping block; 28, third through hole; 29, first connecting box; 30, second connecting box; 31, mesh plate; 32, fourth spring; 33, rubber connecting block; 34, overlapping block; 35, conductive plate; 36, connecting frame; 37, electric heating tube; 38, mounting hole; 39, phosphine generator; 40, guide plate; 41, positive power supply contact; 42, negative power supply contact. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

[0039] Embodiment 1

[0040] As Figures 1 - 15As shown in the figure, this embodiment proposes an adjustable spraying device for forestry pest control, including a trolley 1. A fixed ring 2 is fixedly arranged on the trolley 1, and a medicine storage tank 3 is fixedly connected inside the fixed ring 2. The medicine storage tank 3 is used to store the insecticide substitute, and the insecticide substitute is diatomaceous earth powder. The insecticidal principle of diatomaceous earth powder is to cause abrasion to the cutin of insects through the powder particles, and to cut the body wall of insects through the sprayed powder to achieve the insecticidal function. A first connecting pipe 4, a second connecting pipe 5 and a third connecting pipe 8 are communicated and arranged on the medicine storage tank 3. A powder pump 6 is installed on the second connecting pipe 5. A first connecting cylinder 7 is arranged above the powder pump 6. A spraying assembly 25 is installed on the first connecting cylinder 7. The diatomaceous earth powder in the medicine storage tank 3 is pumped into the inside of the second connecting pipe 5 and the first connecting cylinder 7 through the powder pump 6, and the spraying work is carried out through the spraying assembly 25. When spraying, the spraying assembly 25 can adaptively adjust the spraying range enabled according to the amount of sprayed medicine, enhancing the practicability of the device. A pressing rod 26 is installed on the spraying assembly 25. A convex plate 11 is fixedly connected to the third connecting pipe 8. A first spring 12 is fixedly arranged on the convex plate 11. A second connecting cylinder 9 is slidably installed inside the third connecting pipe 8. A first supporting assembly 14 is installed on the second connecting cylinder 9. A first through hole 13 and a third through hole 28 are opened on the second connecting cylinder 9. A fourth connecting pipe 10 is communicated and arranged on the third connecting pipe 8. A first connecting ring 15 is installed on the first supporting assembly 14. A second supporting assembly 16 is arranged on the first connecting ring 15. A rubber support plate 20 is fixedly arranged at the bottom of the medicine storage tank 3. A movable plate 19 is arranged below the rubber support plate 20. When the device sprays medicine, by using the air pressure change in the medicine storage tank 3, the first supporting assembly 14 can slide up and down intermittently, thereby intermittently pushing the rubber support plate 20, and further enabling the device to intermittently push the rubber support plate 20 at the bottom of the medicine storage tank 3 during spraying, so that the agglomerated diatomaceous earth powder can be fully vibrated and dispersed. First connecting boxes 29 and second connecting boxes 30 are respectively rotatably installed on both sides of the spraying assembly 25. Lapping blocks 34, conductive plates 35 and connecting frames 36 are fixedly arranged inside the first connecting boxes 29 and the second connecting boxes 30. A phosphine generator 39 is fixedly arranged on the connecting frame 36. Subsequently, the phosphine generator 39 can be powered on through the conductive plate 35 to generate phosphine gas, and cooperate with the spraying assembly 25 to achieve the function of fumigating and killing insects.

[0041] Embodiment 2

[0042] As Figures 1 - 15 shown, based on the same concept as the above-mentioned Embodiment 1, this embodiment also proposes an adjustable spraying device for forestry pest control.

[0043] In this embodiment, the trolley 1, the fixing ring 2, the medicine storage tank 3, the first connecting pipe 4, the second connecting pipe 5, the third connecting pipe 8, the fourth connecting pipe 10 and the convex plate 11 are fixedly connected into an integral structure to keep the whole device stable. A pressure relief valve 24 is installed between the fixing ring 2 and the second connecting pipe 5. The pressure relief valve 24 facilitates providing an additional fluid passage by using the air pressure change when increasing the medicine spraying amount later.

[0044] In this embodiment, a key connection is provided between the second connecting cylinder 9 and the third connecting pipe 8. The first through hole 13 and the fourth connecting pipe 10 are located on the same side of the second connecting cylinder 9 and the third connecting pipe 8, ensuring that the second connecting cylinder 9 can keep the angle unchanged when moving up and down. After the second connecting cylinder 9 moves downward, the height of the first through hole 13 can change, so as to conveniently supplement the pest control medicine later.

[0045] In this embodiment, the vertical distance from the first through hole 13 to the fourth connecting pipe 10 is equal to the vertical distance from the third through hole 28 to the inside of the medicine storage tank 3. The inside of the second connecting cylinder 9 is hollow, and both the upper and lower sides of the second connecting cylinder 9 are closed structures, ensuring that when the first through hole 13 is communicated with the fourth connecting pipe 10, the third through hole 28 just communicates with the inside of the medicine storage tank 3, so that the air pressure in the medicine storage tank 3 automatically returns to the normal state. As the device continuously sprays medicine, the second connecting cylinder 9 will move up and down intermittently to shake the diatomaceous earth powder agglomerated at the bottom of the device later.

[0046] In this embodiment, the first support assembly 14 includes a first connecting plate 1401 fixedly connected between the second connecting cylinder 9 and the first connecting ring 15. The first spring 12 is installed between the first connecting plate 1401 and the convex plate 11. A fixing rod 1402 is fixedly arranged on the first connecting plate 1401. A pressing plate 1403 is fixedly connected to the bottom of the fixing rod 1402. A pressing block 1404 is slidably installed on the pressing plate 1403. A second spring 1405 is fixedly connected between the pressing plate 1403 and the pressing block 1404. The structure of the first support assembly 14 is the same as that of the second support assembly 16. After the second connecting cylinder 9 moves downward, the first spring 12 will be compressed to reset the first connecting plate 1401 later. When the pressing plate 1403 moves upward, it will drive the pressing block 1404 to move upward. When the pressing block 1404 encounters an obstacle, it will retract into the inside of the pressing plate 1403 and compress the second spring 1405, facilitating the dispersion of the agglomerated diatomaceous earth powder in the tank later.

[0047] In this embodiment, a guiding groove 18 is formed on the pressing plate 1403, a guiding block 17 is fixedly connected to the medicine storage tank 3, the outer wall of the guiding block 17 is in mutual fit with the inner wall of the guiding groove 18, inclined planes are arranged on both the upper and lower sides of the pressing block 1404, a lifting structure is formed between the movable plate 19 and the rubber support plate 20 through the pressing block 1404, a guiding column 23 is fixedly connected to the bottom of the movable plate 19, and the guiding column 23 is slidably connected to the cart 1. The pressing block 1404 pushes the movable plate 19 upward through the lifting structure on the device, and the movable plate 19 is used to knock the rubber support plate 20, so that the agglomerates in the rubber support plate 20 are fully vibrated, enhancing the practicability of the device. The guiding block 17 and the guiding groove 18 ensure the vertical up-and-down movement of the pressing plate 1403.

[0048] In this embodiment, a sealing block 21 is fixedly connected to the rubber support plate 20, an inner groove 22 for the movement of the sealing block 21 is formed on the medicine storage tank 3, and subsequently, by moving the pressing plate 1403 upward and then removing the sealing block 21, the rubber support plate 20 as a whole can be removed from the medicine storage tank 3, so as to clean the medicine storage tank 3 and the rubber support plate 20.

[0049] In this embodiment, the pressure relief valve 24 includes a rotating shaft 2402 rotatably installed on the fixed ring 2, a rubber rotating plate 2401 is fixedly connected to the rotating shaft 2402, and a torsion spring 2403 is fixedly arranged between the rotating shaft 2402 and the fixed ring 2. When the air pressure in the device increases, the torsion spring 2403 can be compressed, so that the through hole above the fixed ring 2 is opened, and the device can spray medicine efficiently by opening multiple channels.

[0050] In this embodiment, the medicine spraying assembly 25 includes damping shaft cylinders 2501 communicated with both sides of the first connecting cylinder 7, a connecting shell 2502 is rotatably installed on the damping shaft cylinders 2501, a sealing plate 2503 is fixedly arranged on the connecting shell 2502, a third spring 2504 and a rubber baffle 2505 are fixedly connected inside the connecting shell 2502, second through holes 2506 are uniformly formed on the connecting shell 2502, a second connecting ring 2507 is fixedly connected to the connecting shell 2502, the second connecting ring 2507 is fixedly arranged on both sides of the pressing rod 26, the pressing rod 26 is slidably connected to the second connecting ring 2507, a damping block 27 is fixedly connected to the pressing rod 26, and the damping block 27 can increase the friction force between the second connecting ring 2507 and the pressing rod 26, facilitating the subsequent adjustment and fixing of the initial position of the pressing rod 26 on the second connecting ring 2507. When the diatomaceous earth powder is fed into the connecting shell 2502, as the air pressure in the device increases, the rubber baffle 2505 is pushed, and more second through holes 2506 are changed from a closed state to a communicated state, so that the device can automatically increase the medicine spraying range when the medicine spraying amount increases.

[0051] In this embodiment, the damping shaft cylinder 2501, the connection shell 2502 and the first connection cylinder 7 are all interconnected. The third spring 2504 and the rubber baffle 2505 are in contact with each other, and the rubber baffle 2505 and the inner wall of the connection shell 2502 are in contact with each other, ensuring that when the amount of sprayed medicine in the connection shell 2502 increases, the rubber baffle 2505 can be lifted, so as to synchronously adjust the amount of sprayed medicine and the spraying range subsequently. The connection shell 2502 can rotate on the damping shaft cylinder 2501, thereby adjusting the initial spraying range of the device. The first connection box 29 and the second connection box 30 are both rotatably mounted on the connection shell 2502. Mesh plates 31 are mounted on both the first connection box 29 and the second connection box 30. The positions of the mesh plates 31 correspond to the positions of each column of second through holes 2506 one by one, ensuring that the airflow can evenly disperse the phosphine gas, thereby ensuring the pest control effect of the device. A guide plate 40 is fixedly provided on the phosphine generator 39, and the phosphine gas is evenly dispersed along the inclined surface of the guide plate 40. A rubber connection block 33 is slidably connected to the first connection box 29, and a fourth spring 32 is fixedly provided between the rubber connection block 33 and the first connection box 29. By rotating the first connection box 29 and the second connection box 30 on the upper and lower sides of the connection shell 2502, the rubber connection block 33 is pushed by the fourth spring 32, so that the first connection box 29 and the second connection box 30 are kept in a pressed state when using the fumigation function. An electric heating tube 37 is fixedly provided on the conductive plate 35. A power supply positive contact 41 is provided on the conductive plate 35 in the first connection box 29. An installation hole 38 for the power supply positive contact 41 to pass through is provided on the first connection box 29. A power supply negative contact 42 is provided on the conductive plate 35 in the second connection box 30. When the first connection box 29 and the second connection box 30 are in contact with each other, the power supply positive contact 41 and the power supply negative contact 42 are in contact with each other, so that the electric heating tube 37 is powered on, and thus high-efficiency fumigation and pest control work is carried out by means of hot air flow in cooperation with phosphine gas.

[0052] Specifically, the present invention is an adjustable forestry pest control spraying device. First, as Figures 1 - 7 shown, the device performs mobile spraying through the trolley 1. The fixing ring 2 is used to fix the medicine storage tank 3 and the left and right parts of the trolley 1. The diatomaceous earth powder is stored in the medicine storage tank 3. The diatomaceous earth powder for pest control in the medicine storage tank 3 is pumped into the first connection pipe 4 by the powder pump 6. The diatomaceous earth powder in the first connection pipe 4 will be sent into the first connection cylinder 7 and the damping shaft cylinder 2501 on the spraying assembly 25 through the second connection pipe 5. Since the damping shaft cylinder 2501, the connection shell 2502 and the first connection cylinder 7 are interconnected with each other, the diatomaceous earth powder will finally be sprayed out through the second through holes 2506 in the middle part of the connection shell 2502 under the action of air pressure change. When the air pressure increases, as Figure 4As shown, the rubber baffle 2505 is pushed, and the third spring 2504 will be compressed, causing more of the second through-holes 2506 to change from a closed state to a connected state, so that the spraying range of the device automatically increases when the spraying amount increases. The connecting shell 2502 can rotate on the damping shaft cylinder 2501 to adjust the initial angle of the connecting shell 2502, thereby changing the initial spraying range in the vertical direction of the device. When the air pressure in the connecting shell 2502 increases, the air pressure in the medicine storage tank 3 will decrease. When the negative pressure in the medicine storage tank 3 reaches a certain level, the rubber rotating plate 2401 can be rotated, and the torsion spring 2403 on the rotating shaft 2402 is compressed, so that the channel between the fixing ring 2 and the second connecting pipe 5 is opened. By opening multiple channels, the connecting shell 2502 sprays medicine efficiently. After the diatomaceous earth powder is sprayed, the cutin of insects is abraded by the powder particles, and the insect body wall is cut by the sprayed powder to achieve the insecticidal function.

[0053] As Figures 1 - 4 shown, since the first support assembly 14 and the second support assembly 16 on the first connecting ring 15 are respectively located on both sides of the movable plate 19, and the structures of the first support assembly 14 and the second support assembly 16 are the same, and the position of the pressing block 1404 corresponds to that of the movable plate 19. Using the negative pressure in the medicine storage tank 3, the first connecting plate 1401 and the second connecting cylinder 9 on the first support assembly 14 can slide up and down intermittently. The fixing rod 1402, the pressing plate 1403 and the pressing block 1404 on the first support assembly 14 move up and down as a whole, and then the pressing block 1404 intermittently pushes the movable plate 19, and the movable plate 19 intermittently pushes the rubber support plate 20. Furthermore, the device intermittently pushes the rubber support plate 20 at the bottom of the medicine storage tank 3 during spraying, so that the agglomerated diatomaceous earth powder is fully vibrated. The second spring 1405 can reset the pressing block 1404 after being compressed. After the second connecting cylinder 9 moves downward, the first spring 12 will be compressed to reset the first connecting plate 1401 subsequently. The guide block 17 and the guide groove 18 ensure that the pressing plate 1403 can move vertically up and down. Subsequently, by pulling the pressing rod 26, the first connecting plate 1401 and the second connecting cylinder 9 are pressed down by the pressing rod 26. Since the vertical distance from the first through-hole 13 to the fourth connecting pipe 10 is equal to the vertical distance from the third through-hole 28 to the inside of the medicine storage tank 3, when the first through-hole 13 is connected to the fourth connecting pipe 10, the third through-hole 28 is exactly connected to the inside of the medicine storage tank 3. Subsequently, the diatomaceous earth powder for pest control can be replenished through the fourth connecting pipe 10. As Figures 8 - 11 shown, by moving the pressing plate 1403 upward, the pressing plate 1403 no longer blocks the sealing block 21, and removing the sealing block 21 enables the entire rubber support plate 20 to be removed from the medicine storage tank 3, so as to clean the impurities accumulated inside the medicine storage tank 3 and on the rubber support plate 20. As Figures 12 - 15As shown in the figure, when the device uses the fumigation function, the first connection box 29 and the second connection box 30 on the upper and lower sides of the rotating connection shell 2502 are rotated. The rubber connection block 33 is pushed by the fourth spring 32, and the rubber connection block 33 keeps the first connection box 29 and the second connection box 30 in a pressed state. When the first connection box 29 and the second connection box 30 are in contact with each other, the power supply positive contact 41 and the power supply negative contact 42 are in contact with each other, so that the electric heating tube 37 and the phosphine generator 39 are powered on, and thus the high-efficiency fumigation and pest control work is carried out by the hot air flow in cooperation with the phosphine gas. After the air flow passes through the second through hole 2506, since the position of the net plate 31 corresponds to the position of each column of the second through holes 2506 one by one, and in cooperation with the inclined surfaces around the guide plate 40, the phosphine gas can be evenly dispersed along the inclined surface of the guide plate 40, so as to evenly disperse the phosphine gas and ensure the pest control effect of the device.

[0054] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adjustable spraying device for forestry pest control, comprising a trolley (1), characterized in that: A fixed ring (2) is fixedly arranged on the trolley (1), a medicine storage tank (3) is fixedly connected inside the fixed ring (2), the medicine storage tank (3) is used for storing a pesticide substitute, a first connecting pipe (4), a second connecting pipe (5) and a third connecting pipe (8) are communicatedly arranged on the medicine storage tank (3), a powder pump (6) is installed on the second connecting pipe (5), a first connecting cylinder (7) is arranged above the powder pump (6), a medicine spraying assembly (25) is installed on the first connecting cylinder (7), a pressing rod (26) is installed on the medicine spraying assembly (25), a convex plate (11) is fixedly connected to the third connecting pipe (8), a first spring (12) is fixedly arranged on the convex plate (11), a second connecting cylinder (9) is slidably installed inside the third connecting pipe (8), a first supporting assembly (14) is installed on the second connecting cylinder (9), a first through hole (13) and a third through hole (28) are formed in the second connecting cylinder (9), a fourth connecting pipe (10) is communicatedly arranged on the third connecting pipe (8), a first connecting ring (15) is installed on the first supporting assembly (14), a second supporting assembly (16) is arranged on the first connecting ring (15), a rubber support plate (20) is fixedly arranged at the bottom of the medicine storage tank (3), a movable plate (19) is arranged below the rubber support plate (20), a first connecting box (29) and a second connecting box (30) are respectively rotatably installed on two sides of the medicine spraying assembly (25), a lapping block (34), a conductive plate (35) and a connecting frame (36) are fixedly arranged inside the first connecting box (29) and the second connecting box (30), and a phosphine generator (39) is fixedly arranged on the connecting frame (36).

2. The adjustable forestry pest control spraying device according to claim 1, wherein, The trolley (1), the fixed ring (2), the medicine storage tank (3), the first connecting pipe (4), the second connecting pipe (5), the third connecting pipe (8), the fourth connecting pipe (10) and the convex plate (11) are fixedly connected into an integral structure, and a pressure relief valve (24) is installed between the fixed ring (2) and the second connecting pipe (5).

3. An adjustable spraying device for forestry pest control according to claim 1, characterized in that, A key connection is provided between the second connecting cylinder (9) and the third connecting pipe (8), and the first through hole (13) and the fourth connecting pipe (10) are located on the same side of the second connecting cylinder (9) and the third connecting pipe (8).

4. An adjustable spraying device for forestry pest control according to claim 1, characterized in that, The vertical distance from the first through hole (13) to the fourth connecting pipe (10) is equal to the vertical distance from the third through hole (28) to the inside of the medicine storage tank (3), the inside of the second connecting cylinder (9) is hollow, and both the upper and lower sides of the second connecting cylinder (9) are closed structures.

5. An adjustable spraying device for forestry pest control according to claim 1, characterized in that, The first support assembly (14) includes a first connecting plate (1401) fixedly connected between the second connecting cylinder (9) and the first connecting ring (15). The first spring (12) is installed between the first connecting plate (1401) and the convex plate (11). A fixing rod (1402) is fixedly arranged on the first connecting plate (1401). The bottom of the fixing rod (1402) is fixedly connected with a pressing plate (1403). A pressing block (1404) is slidably installed on the pressing plate (1403). A second spring (1405) is fixedly connected between the pressing plate (1403) and the pressing block (1404). The first support assembly (14) has the same structure as the second support assembly (16).

6. The adjustable forestry pest control spraying device according to claim 5, characterized in that, A guiding groove (18) is formed on the pressing plate (1403). A guiding block (17) is fixedly connected to the medicine storage tank (3). The outer wall of the guiding block (17) is in mutual fit with the inner wall of the guiding groove (18). Oblique cutting surfaces are arranged on both the upper and lower sides of the pressing block (1404). The movable plate (19) and the rubber support plate (20) form a lifting structure through the pressing block (1404).

7. An adjustable spraying device for forestry pest control according to claim 1, characterized in that, A sealing block (21) is fixedly connected to the rubber support plate (20). An inner groove (22) for the movement of the sealing block (21) is formed on the medicine storage tank (3).

8. The adjustable forestry pest control spraying device according to claim 2, characterized in that, The pressure relief valve (24) includes a rotating shaft (2402) rotatably installed on the fixed ring (2). A rubber rotating plate (2401) is fixedly connected to the rotating shaft (2402). A torsion spring (2403) is fixedly arranged between the rotating shaft (2402) and the fixed ring (2).

9. An adjustable spraying device for forestry pest control according to claim 1, characterized in that, The medicine spraying assembly (25) includes damping shaft cylinders (2501) communicated with both sides of the first connecting cylinder (7). A connecting shell (2502) is rotatably installed on the damping shaft cylinders (2501). A sealing plate (2503) is fixedly arranged on the connecting shell (2502). A third spring (2504) and a rubber baffle (2505) are fixedly connected inside the connecting shell (2502). Second through holes (2506) are uniformly formed on the connecting shell (2502). A second connecting ring (2507) is fixedly connected to the connecting shell (2502). The second connecting ring (2507) is fixedly arranged on both sides of the pressing rod (26).

10. An adjustable spraying device for forestry pest control according to claim 9, characterized in that, The damping shaft cylinder (2501), the connecting shell (2502) and the first connecting cylinder (7) are all interconnected. The third spring (2504) abuts against the rubber baffle (2505). The rubber baffle (2505) abuts against the inner wall of the connecting shell (2502). The first connecting box (29) and the second connecting box (30) are both rotatably installed on the connecting shell (2502). The first connecting box (29) and the second connecting box (30) are both provided with mesh plates (31). The positions of the mesh plates (31) correspond one by one to the positions of each row of the second through holes (2506). A guiding plate (40) is fixedly arranged on the phosphine generator (39). A rubber connecting block (33) is slidably connected to the first connecting box (29). A fourth spring (32) is fixedly arranged between the rubber connecting block (33) and the first connecting box (29). An electric heating tube (37) is fixedly arranged on the conductive plate (35). A positive power supply contact (41) is arranged on the conductive plate (35) in the first connecting box (29). A negative power supply contact (42) is arranged on the conductive plate (35) in the second connecting box (30).

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