An adjustable spray device

Abstract

The application provides an adjustable spraying device, and belongs to the technical field of plant salt-alkali resistance experiments. The device comprises a first connecting cylinder, a connecting block welded on the first connecting cylinder, a second connecting cylinder installed on the connecting block, a driving assembly installed between the first connecting cylinder and the second connecting cylinder, a middle pipe installed in the middle of the driving assembly, a supporting plate connected to the upper part of the middle pipe, an opening formed in the supporting plate, a connecting rod fixedly connected to the inside of the first connecting cylinder, a pump pipe installed on the connecting rod, a water tank fixedly connected to the top of the pump pipe, a hanging assembly installed on the water tank, and a first rubber plate fixedly connected to the supporting plate. The application solves the problem that the existing spraying device cannot switch the spraying solution to realize the fertilization function or simulate the salt-alkali environment in the soil, and cannot adjust the spraying effect by changing the bending radius of the fluid channel.

Description

Technical Field

[0001] This invention relates to the field of plant salt-alkali resistance experimental technology, specifically to an adjustable spraying device. Background Technology

[0002] Plant salt tolerance refers to the ability of plants to maintain normal growth and development in highly saline-alkali environments. Excessive accumulation of salt and alkaline substances in the soil can negatively impact plant growth. Spraying devices are required for conducting plant salt tolerance experiments, but existing spraying devices have some shortcomings.

[0003] CN116326273A discloses a spray-type fertilization device for saline-alkali land. It uses two sets of plows to layer and turn the saline-alkali soil, while simultaneously using crushing blades to thoroughly break up the turned soil, disrupting the channels for salt to rise and ensuring effective soil turning. Fertilizer spray nozzles are installed inside an arched shell, spraying fertilizer onto the broken soil within the arched shell. The crushing blades further mix the fertilizer with the soil, ensuring effective fertilization. One set of plows, located on one side of the mounting plate, has a greater depth than the other set. The increased pressure on the moving wheels during the cylinder's oscillation ensures effective turning. The eccentric effect of the moving wheels is fully utilized, and air is supplied to the fixed pipe via a cylinder. This mechanical linkage ensures effective soil layering and fertilization simultaneously, guaranteeing improved fertilization results for saline-alkali soils. Although the above-mentioned device can perform fertilization, it cannot switch its function according to the needs of use in actual use. It cannot switch the spray solution to achieve irrigation and fertilization or simulate the saline-alkali environment in the soil. It is difficult to adapt to different needs and switch accordingly. Furthermore, the existing spraying device cannot adjust the spraying effect by changing the curvature of the fluid channel. During operation, it cannot use the brine solution pipe to disperse the sprayed water flow. Summary of the Invention

[0004] In view of the problems existing in the spraying devices for plant salt and alkali resistance experiments, the present invention is proposed.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an adjustable spraying device, comprising a first connecting cylinder, a connecting block welded to the first connecting cylinder, a second connecting cylinder mounted on the connecting block, a driving assembly installed between the first and second connecting cylinders, a central pipe installed in the middle of the driving assembly, a support plate connected above the central pipe, an opening on the support plate, a connecting rod fixedly connected inside the first connecting cylinder, a pump pipe mounted on the connecting rod, a water tank fixedly connected to the top of the pump pipe, a suspension assembly mounted on the water tank, and a first rubber plate fixedly connected to the support plate. A rubber side plate is installed on the side of the first rubber plate. A fixing sleeve is fixedly connected to the first rubber plate and the rubber side plate. An extension tube is installed below the fixing sleeve. A spray pipe is rotatably connected to the bottom of the extension tube. A spray hole is opened on the spray pipe. A docking assembly is installed inside the fixing sleeve. A fixing tube is connected above the docking assembly. A connecting shell is connected above the fixing tube. A first plug is threaded on the connecting shell. A second plug is installed on the water tank. A support assembly is installed between the support plate and the rubber side plate. An inner tube is fixedly installed inside the connecting shell. The position of the inner tube corresponds to the position of the fixing tube.

[0006] As a preferred embodiment of the present invention, the drive assembly includes a connecting plate fixedly connected to the second connecting cylinder, a waterproof motor fixedly mounted on the connecting plate, a gear connected to the output shaft of the waterproof motor, a gear ring meshing with the gear, a fixing plate fixedly mounted in the middle of the gear ring, and a fixed connection between the fixing plate and the central tube.

[0007] As a preferred embodiment of the present invention, the toothed ring, the fixing plate, the middle tube and the support plate are integrally formed, the upper and lower surfaces of the toothed ring are respectively in contact with the lower surface of the second connecting cylinder and the upper surface of the first connecting cylinder, and the support plate and the second connecting cylinder are rotatably connected.

[0008] As a preferred embodiment of the present invention, the support plate has a through hole in the middle for the pump pipe to pass through, the pump pipe passes through the bottom of the middle pipe, and there is a gap between the bottom of the pump pipe and the bottom inner wall of the first connecting cylinder.

[0009] As a preferred embodiment of the present invention, the first rubber plate is evenly distributed along the circumference of the support plate, and the rubber side plates are symmetrically distributed on both sides of the first rubber plate. Both the first rubber plate and the rubber side plates are bent.

[0010] As a preferred embodiment of the present invention, the fixing sleeve is interconnected with the connecting shell through the fixing tube. The fixing tube is evenly distributed below the connecting shell. The extension tube and the spray pipe are evenly distributed below the fixing sleeve. The extension tubes at each location increase in height from the side closer to the rubber side plate to the side farther from the rubber side plate. The spray holes are evenly distributed along the circumference of the spray pipe.

[0011] As a preferred embodiment of the present invention, the docking assembly includes a docking hole formed on the top of the fixing sleeve, the inner wall of the docking hole and the outer wall of the fixing tube are in contact with each other, a mesh cover is fixedly connected to the bottom of the fixing tube, a damping pad is fixedly connected to the outer side of the mesh cover, the outer diameter of the mesh cover is smaller than the diameter of the docking hole, and the diameter of the docking hole is between the inner diameter and the outer diameter of the damping pad.

[0012] As a preferred embodiment of the present invention, the support assembly includes a first fixing block fixedly connected to a support plate, a first rotating ring rotatably connected to the outer side of the first fixing block, an outer bushing fixedly connected to the first rotating ring, an extension rod fitted inside the outer bushing, the extension rod and the rubber side plate being rotatably connected, a plurality of mating grooves being equally spaced on the extension rod, a mating rod penetrating inside the outer bushing, and a spring installed between the mating rod and the outer bushing.

[0013] As a preferred embodiment of the present invention, the suspension assembly includes a limiting slider slidably installed inside the water tank, a sliding plate fixedly connected above the limiting slider, a protruding plate fixedly connected to the sliding plate, a bidirectional screw threaded between two adjacent sliding plates, a support block rotatably connected in the middle of the bidirectional screw, and the support block and the water tank being fixedly connected.

[0014] As a preferred embodiment of the present invention, a support rod is fixedly installed on the water tank, a leaf spring is fixedly connected to the support rod, a connecting block is fixedly installed on the bidirectional screw, and a cross groove for engaging with the leaf spring is provided on the connecting block.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. By using a fixed sleeve, fixed pipe, connecting shell, and docking assembly, a salt solution is added inside the connecting shell. The entire device is suspended on a support below the drone by a suspension assembly, allowing the device to automatically spray a salt solution during movement, thereby simulating a saline-alkali soil environment. When conducting plant salt-alkali resistance experiments, a water pump can be connected to an external pump pipe to pump water from the water tank into the first and second connecting cylinders, allowing the water in the first and second connecting cylinders to flow out along the arc surface of the first rubber plate and the rubber side plate. This allows switching between spraying solutions to achieve irrigation and fertilization functions or to simulate a saline-alkali environment in the soil. The device can switch between irrigation and fertilization or salt solution spraying functions as needed.

[0017] 2. Through multiple extension pipes and nozzles with increasing height on the device, the fluid sprayed from the device is automatically dispersed when it passes through the nozzle used for spraying salt solution, thereby ensuring the uniformity of spraying and realizing the function of decentralized spraying. Under the action of the drive component, the device can make the central pipe and support plate rotate continuously, thereby realizing the function of automatic spraying. This solves the problem that existing spraying devices cannot use the salt solution pipeline to disperse the sprayed water flow. This device has the advantage of stronger functionality. While the nozzle disperses the water flow, it can also adjust the angle of the nozzle on the extension pipe so that the nozzle orifice can point to the position of the first rubber plate, realizing the function of automatic unblocking of the nozzle orifice.

[0018] 3. By setting an adjustable curvature first rubber plate and rubber side plate, the curvature of the fluid channel can be adjusted. By adjusting the extension length of the extension rod inside the outer bushing of the support assembly, the overall length of the support assembly is changed, thereby changing the curvature of the first rubber plate and rubber side plate, and thus adjusting the spraying effect of the device. This solves the problem that existing spraying devices cannot adjust the spraying effect by changing the curvature of the fluid channel.

[0019] 4. Through the docking components and inner tube, the inner tube allows some salt particles to deposit at the bottom of the connecting shell, thereby reducing the amount of salt particles entering the fixed tube. During use, the device can also use a mesh cover to intercept salt particles a second time, thereby preventing the nozzles on the device from becoming clogged and enhancing the device's performance. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0021] Figure 1This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 yes Figure 1 Enlarged schematic diagram of the structure at point A;

[0023] Figure 3 yes Figure 1 Enlarged schematic diagram of the structure at point B;

[0024] Figure 4 yes Figure 1 Enlarged schematic diagram of the structure at point C;

[0025] Figure 5 This is a schematic diagram of the disassembled structure of the support plate and the second connecting cylinder of the present invention;

[0026] Figure 6 yes Figure 1 Enlarged schematic diagram of the structure at point D;

[0027] Figure 7 This is a schematic diagram of the connection structure between the fixing sleeve and the fixing tube of the present invention;

[0028] Figure 8 yes Figure 1 Enlarged schematic diagram of the structure at point E;

[0029] Figure 9 This is a schematic diagram of the connection structure between the pump pipe and the connecting rod of the present invention.

[0030] Reference numerals: 1. First connecting cylinder; 2. Second connecting cylinder; 3. Connecting block; 4. Drive assembly; 401. Connecting plate; 402. Waterproof motor; 403. Gear; 404. Gear ring; 405. Fixing plate; 5. Middle tube; 6. Support plate; 7. Through hole; 8. First rubber plate; 9. Rubber side plate; 10. Fixing sleeve; 11. Fixing tube; 12. Connecting shell; 13. First plug; 14. Extension tube; 15. Spray pipe; 16. Spray hole; 17. Docking assembly; 1701. Docking hole; 1702. Mesh cover; 1703. Damping pad; 18. Support assembly ; 1801, First fixing block; 1802, First rotating ring; 1803, Outer bushing; 1804, Extension rod; 1805, Connecting groove; 1806, Connecting rod; 1807, Spring; 19, Pump pipe; 20, Water tank; 21, Second plug; 22, Suspension assembly; 2201, Limiting slider; 2202, Slide plate; 2203, Protruding plate; 2204, Bidirectional screw; 2205, Support block; 2206, Connecting block; 2207, Leaf spring; 2208, Support rod; 2209, Cross groove; 23, Opening; 24, Connecting rod; 25, Inner tube. Detailed Implementation

[0031] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0034] Example

[0035] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0036] like Figures 1-9As shown, an adjustable spraying device includes a first connecting cylinder 1, a connecting block 3 welded to the first connecting cylinder 1, a second connecting cylinder 2 mounted on the connecting block 3, and a drive assembly 4 installed between the first connecting cylinder 1 and the second connecting cylinder 2. The connecting block 3 ensures a stable connection between the first connecting cylinder 1 and the second connecting cylinder 2 without affecting the normal operation of the drive assembly 4. The drive assembly 4 facilitates the rotary spraying function of the subsequent drive device. A central pipe 5 is installed in the middle of the drive assembly 4, and a support plate 6 is connected above the central pipe 5. An opening 23 is provided on the support plate 6. A connecting rod 24 is fixedly connected inside the first connecting cylinder 1, and a pump pipe 19 is installed on the connecting rod 24. A water tank is fixedly connected to the top of the pump pipe 19. 20. The device can be connected to an external water pump via a pump pipe 19 below the water tank 20, thereby pumping water from the water tank 20 into the first connecting cylinder 1 and the second connecting cylinder 2 for subsequent spraying. A suspension assembly 22 is installed on the water tank 20, and a first rubber plate 8 is fixedly connected to the support plate 6. Rubber side plates 9 are installed on the side of the first rubber plate 8. During spraying, the liquid will spray out from the opening 23 and then flow out along the first rubber plate 8 and the rubber side plates 9, achieving efficient spraying. During the spraying process, the suspension assembly 22 allows the device to be suspended on the lower support of the drone for use with the drone. Fixing sleeves are fixedly connected to the first rubber plate 8 and the rubber side plates 9. 10. An extension tube 14 is installed below the fixed sleeve 10. A nozzle 15 is rotatably connected to the bottom of the extension tube 14. A nozzle 16 is provided on the nozzle 15. By rotating the nozzle 15, the blocked nozzle 16 can be directed to one side of the first rubber plate 8, thereby achieving the function of automatically dispersing the water flow and automatically unblocking the nozzle 16. A docking assembly 17 is installed inside the fixed sleeve 10. A fixed tube 11 is connected above the docking assembly 17. A connecting shell 12 is connected above the fixed tube 11. This device can replenish the connecting shell 12 with a brine solution, allowing the brine to enter the interior of the connecting shell 12 through the fixed tube 11 and the docking assembly 17, and then flow through the nozzle 16. Spraying occurs from nozzle 16 on the 5, thus achieving automatic spraying. A first plug 13 is threaded onto the connecting shell 12, and a second plug 21 is installed on the water tank 20. A support assembly 18 is installed between the support plate 6 and the rubber side plate 9. The support assembly 18 allows the rubber side plate 9 to maintain different angles, thereby enabling the device to change its spraying range and enhancing its functionality. An inner tube 25 is fixedly installed inside the connecting shell 12, and the position of the inner tube 25 corresponds to the position of the fixed tube 11. When salt solution is added to the device, some of the deposited salt particles will remain at the bottom of the inner wall of the connecting shell 12, thereby reducing the clogging rate of the device and preventing excessive salt particles from entering the extension tube 14 and the spray pipe 15.

[0037] In this embodiment, the drive assembly 4 includes a connecting plate 401 fixedly connected to the second connecting cylinder 2. A waterproof motor 402 is fixedly mounted on the connecting plate 401. A gear 403 is connected to the output shaft of the waterproof motor 402. A gear ring 404 is meshed on the gear 403. A fixing plate 405 is fixedly mounted in the middle of the gear ring 404. The fixing plate 405 and the middle tube 5 are fixedly connected. The waterproof motor 402 can drive the gear 403 to rotate, thereby driving the gear ring 404 to rotate, so as to realize the rotary spraying function and ensure the uniformity of the spraying of the device.

[0038] In this embodiment, the toothed ring 404, the fixing plate 405, the middle tube 5 and the support plate 6 are integrally formed. The upper and lower surfaces of the toothed ring 404 are respectively in contact with the lower surface of the second connecting cylinder 2 and the upper surface of the first connecting cylinder 1. The support plate 6 and the second connecting cylinder 2 are rotatably connected to ensure the sealing effect of the device, prevent liquid from flowing out from the gaps on the upper and lower sides of the toothed ring 404, and ensure the stability of the device during operation.

[0039] In this embodiment, a through hole 7 is provided in the middle of the support plate 6 for the pump pipe 19 to pass through. The pump pipe 19 passes through the bottom of the middle pipe 5. There is a gap between the bottom of the pump pipe 19 and the bottom inner wall of the first connecting cylinder 1. After the pump pipe 19 is connected to an external water pump, it can pump liquid into the first connecting cylinder 1 below. The gap between the pump pipe 19 and the first connecting cylinder 1 ensures that the liquid at the bottom of the pump pipe 19 can flow out normally, while keeping the pump pipe 19 and the first connecting cylinder 1 from rotating.

[0040] In this embodiment, the first rubber plate 8 is evenly distributed along the circumference of the support plate 6, and the rubber side plates 9 are symmetrically distributed on both sides of the first rubber plate 8. Both the first rubber plate 8 and the rubber side plates 9 are bent. The first rubber plate 8 and the rubber side plates 9 with the bent structure enable the liquid to flow out along a certain arc. Combined with the rotating spraying structure, the spraying uniformity of the device can be guaranteed.

[0041] In this embodiment, the fixing sleeve 10 is connected to the connecting shell 12 through the fixing tube 11. The fixing tube 11 is evenly distributed below the connecting shell 12. The extension tube 14 and the spray pipe 15 are evenly distributed below the fixing sleeve 10. The extension tube 14 increases in height from the side closer to the rubber side plate 9 to the side farther away from the rubber side plate 9. The evenly distributed extension tube 14 and spray pipe 15 ensure that the device can spray the liquid evenly to the site. The increasing height of the extension tube 14 allows the water flow to impact the extension tube 14 and disperse the water flow, thereby ensuring the irrigation and fertilization effect of the device. The spray holes 16 are evenly distributed around the circumference of the spray pipe 15. Subsequently, the spray pipe 15 can be rotated to make the spray holes 16 face the side of the central axis of the device, so that the device can automatically clear the spray holes 16 while dispersing the water flow.

[0042] In this embodiment, the docking assembly 17 includes a docking hole 1701 opened on the top of the fixing sleeve 10. The inner wall of the docking hole 1701 fits against the outer wall of the fixing tube 11. A mesh cover 1702 is fixedly connected to the bottom of the fixing tube 11. A damping pad 1703 is fixedly connected to the outer side of the mesh cover 1702. The outer diameter of the mesh cover 1702 is smaller than the diameter of the docking hole 1701. The diameter of the docking hole 1701 is between the inner diameter and the outer diameter of the damping pad 1703. The docking hole 1701 allows the mesh cover 1702 to remain in a locked state after the damping pad 1703 is installed inside the fixing sleeve 10. It also facilitates the subsequent removal of the fixing tube 11 from the device. At the same time, the mesh cover 1702 can filter some of the larger salt particles, preventing the device from becoming clogged when spraying salt solution.

[0043] In this embodiment, the support assembly 18 includes a first fixing block 1801 fixedly connected to the support plate 6. A first rotating ring 1802 is rotatably connected to the outer side of the first fixing block 1801. An outer bushing 1803 is fixedly connected to the first rotating ring 1802. An extension rod 1804 is fitted inside the outer bushing 1803. The extension rod 1804 and the rubber side plate 9 are rotatably connected. Multiple docking slots 1805 are evenly spaced on the extension rod 1804. A docking rod 1806 is inserted through the outer bushing 1803. A spring 1807 is installed between the docking rod 1806 and the outer bushing 1803. The device can change the angle of the rubber side plate 9 by pulling up the docking rod 1806 and then adjusting the position of the extension rod 1804 inside the outer bushing 1803. After adjustment, the docking rod 1806 is re-engaged into the docking slot 1805 under the elastic force of the spring 1807.

[0044] In this embodiment, the suspension assembly 22 includes a limiting slider 2201 slidably installed inside the water tank 20. A sliding plate 2202 is fixedly connected above the limiting slider 2201. A protruding plate 2203 is fixedly connected to the sliding plate 2202. A bidirectional screw 2204 is threaded between two adjacent sliding plates 2202. A support block 2205 is rotatably connected in the middle of the bidirectional screw 2204. The support block 2205 and the water tank 20 are fixedly connected. When the device is working, the bidirectional screw 2204 can be rotated to make the two adjacent sliding plates 2202 move towards each other or away from each other under the limiting action of the limiting slider 2201, so that the device can adapt to different drone brackets for clamping and fixing.

[0045] In this embodiment, a support rod 2208 is fixedly installed on the water tank 20, and a leaf spring 2207 is fixedly connected to the support rod 2208. A connecting block 2206 is fixedly installed on the bidirectional screw 2204, and a cross groove 2209 for engaging with the leaf spring 2207 is provided on the connecting block 2206. After the bidirectional screw 2204 is adjusted, the device can fix the bidirectional screw 2204 by inserting the leaf spring 2207 into the cross groove 2209 on the connecting block 2206, thus preventing it from shaking and falling off during movement.

[0046] It should be noted that this invention is an adjustable spraying device. First, as... Figure 1 and Figure 4 As shown, during operation, the device is first fixed to the support below the drone. According to the spacing of the drone support, the spacing between the two adjacent sliding plates 2202 and the protruding plates 2203 is adjusted. By disengaging the leaf spring 2207 in the cross groove 2209, the bidirectional screw 2204 can rotate on the support block 2205. Under the limiting action of the limiting slider 2201, the two adjacent sets of sliding plates 2202 and protruding plates 2203 can move towards each other or away from each other, thereby adapting to the different drone bottom supports for fixing. After fixing, the leaf spring 2207 is re-clamped into the cross groove 2209 to complete the pressing and fixing of the bidirectional screw 2204.

[0047] like Figures 1-3 and Figures 5-9As shown, when simulating saline-alkali land conditions, the device first opens the first plug 13 and adds a salt solution into the connecting shell 12. The salt solution enters the fixed sleeve 10 through the connecting shell 12 and the fixed tube 11. The mesh cover 1702 on the docking assembly 17 prevents salt particles from entering the lower part of the device, thus filtering the salt particles and preventing them from clogging the spray hole 16. Since the outer diameter of the mesh cover 1702 is smaller than the aperture of the docking hole 1701, and the aperture of the docking hole 1701 is between the inner and outer diameters of the damping pad 1703, the docking hole 1701 makes the damping pad 1703 more effective. When the damping pad 1703 is installed inside the fixing sleeve 10, the damping pad 1703 on the outside of the mesh cover 1702 keeps the fixing tube 11 in a locked state. The compressible damping pad 1703 also makes it easy to remove the fixing tube 11 from the device later. During the operation of the device, the salt solution can be injected into the extension tube 14 through the mesh cover 1702 and then sprayed out through the spray hole 16 on the spray pipe 15, thereby realizing the function of automatically spraying salt solution during the movement of the device. In this state, the device can simulate saline-alkali land conditions for subsequent plant salt-alkali resistance experiments. When using the irrigation or fertilization function, open the second cap 21 to fill the water tank 20 with liquid. Then, by connecting an external water pump to the pump pipe 19, the liquid is pumped into the first connecting cylinder 1 and the second connecting cylinder 2 and sprayed out from the openings 23 around the support plate 6. At this time, the waterproof motor 402 on the drive assembly 4 drives the gear 403 to rotate, which in turn drives the gear ring 404, the fixing plate 405, the middle tube 5 and the support plate 6 to rotate. This allows the liquid to flow out along the arc surface of the first rubber plate 8 and the rubber side plate 9 to the outside of the device. When the water flow impacts the nozzles 15 at different heights, the nozzles 15 can disperse the water flow. This, combined with the continuous rotation of the support plate 6, enables the device to achieve the function of uniform spraying and dispersing water flow during movement. The device can also adjust the spraying range during use. Pulling up the connecting rod 1806 stretches the spring 1807, and then adjusting the extension length of the extension rod 1804 within the outer bushing 1803 allows the device to change the angle between the rubber side plate 9 and the first rubber plate 8. After adjustment, the spring force of the spring 1807 causes the connecting rod 1806 to re-engage in the corresponding connecting groove 1805, thus adjusting the overall length of the support assembly 18 and the bending amplitude of the first rubber plate 8 and the rubber side plate 9. The inner tube 25 allows the brine to remain inside the connecting shell 12, reducing the amount of salt particles entering the fixed tube 11, thereby reducing the clogging rate of the device when spraying the salt solution.

[0048] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, as long as there is no structural conflict, the features in the disclosed embodiments can be combined with each other in any manner. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An adjustable spray device comprising a first connecting barrel, characterised in that: A connecting block is welded to the first connecting cylinder, and a second connecting cylinder is installed on the connecting block. A drive assembly is installed between the first and second connecting cylinders. A central tube is installed in the middle of the drive assembly, and a support plate is connected above the central tube. An opening is provided on the support plate. A connecting rod is fixedly connected inside the first connecting cylinder, and a pump pipe is installed on the connecting rod. A water tank is fixedly connected to the top of the pump pipe, and a suspension assembly is installed on the water tank. A first rubber plate is fixedly connected to the support plate, and a rubber side plate is installed on the side of the first rubber plate. A fixing sleeve is fixedly connected to the first rubber plate and the rubber side plate. An extension pipe is installed below the fixing sleeve, and a spray pipe is rotatably connected to the bottom of the extension pipe. A spray hole is provided on the spray pipe. A docking assembly is installed inside the fixing sleeve, and a fixing pipe is connected above the docking assembly. A connecting shell is connected above the fixing pipe, and a first plug is threaded onto the connecting shell. A second plug is installed on the water tank. A support assembly is installed between the support plate and the rubber side plate. An inner tube is fixedly installed inside the connecting shell, and the position of the inner tube corresponds to the position of the fixing tube. The support plate has a through hole in the middle for the pump pipe to pass through. The pump pipe passes through the bottom of the middle pipe, and there is a gap between the bottom of the pump pipe and the bottom inner wall of the first connecting cylinder. The fixing sleeve is connected to the connecting shell through the fixing tube. The fixing tube is evenly distributed below the connecting shell. The extension tube and the nozzle are evenly distributed below the fixing sleeve. The extension tube increases in height from the side closer to the rubber side plate to the side farther away from the rubber side plate. The nozzles are evenly distributed along the circumference of the nozzle. The support assembly includes a first fixing block fixedly connected to a support plate. A first rotating ring is rotatably connected to the outside of the first fixing block. An outer bushing is fixedly connected to the first rotating ring. An extension rod is fitted inside the outer bushing. The extension rod and the rubber side plate are rotatably connected. Multiple mating grooves are evenly spaced on the extension rod. A mating rod is inserted through the outer bushing. A spring is installed between the mating rod and the outer bushing.

2. An adjustable spray device according to claim 1, wherein: The drive assembly includes a connecting plate fixedly connected to the second connecting cylinder. A waterproof motor is fixedly mounted on the connecting plate. A gear is connected to the output shaft of the waterproof motor. A gear ring is meshed on the gear. A fixing plate is fixedly mounted in the middle of the gear ring. The fixing plate and the central tube are fixedly connected.

3. An adjustable spray device according to claim 2, wherein: The toothed ring, fixing plate, central tube and support plate are integrally formed. The upper and lower surfaces of the toothed ring are respectively in contact with the lower surface of the second connecting cylinder and the upper surface of the first connecting cylinder. The support plate and the second connecting cylinder are rotatably connected.

4. An adjustable spray device according to claim 1, wherein: The first rubber plate is evenly distributed along the circumference of the support plate, and the rubber side plates are symmetrically distributed on both sides of the first rubber plate. Both the first rubber plate and the rubber side plates are bent.

5. An adjustable spray device according to claim 1, wherein: The docking assembly includes a docking hole opened on the top of the fixing sleeve. The inner wall of the docking hole fits against the outer wall of the fixing tube. A mesh cover is fixedly connected to the bottom of the fixing tube. A damping pad is fixedly connected to the outer side of the mesh cover. The outer diameter of the mesh cover is smaller than the diameter of the docking hole. The diameter of the docking hole is between the inner diameter and the outer diameter of the damping pad.

6. An adjustable sprinkler according to claim 1, wherein: The suspension assembly includes a limiting slider that is slidably installed inside the water tank. A sliding plate is fixedly connected above the limiting slider. A protruding plate is fixedly connected to the sliding plate. A bidirectional screw is threaded between two adjacent sliding plates. A support block is rotatably connected to the middle of the bidirectional screw. The support block and the water tank are fixedly connected.

7. An adjustable spraying device according to claim 6, characterized in that: A support rod is fixedly installed on the water tank, and a leaf spring is fixedly connected to the support rod. A connecting block is fixedly installed on the bidirectional screw, and a cross groove for engaging with the leaf spring is provided on the connecting block.

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