A plant protection machine for preventing over-watering in local areas

Abstract

The invention discloses a plant protection machine for preventing excessive watering in a local area, and relates to the technical field of agricultural machinery. The machine comprises a water tank body, wherein the inner wall at the bottom of the water tank body is provided with a groove, the side wall of the water tank body is threadedly connected with a water tank cover, the top of the water tank body is detachably connected with the water tank cover, the top of the water tank cover is connected with a water injection pipe, the top of the water tank cover is connected with a fertilizer injection pipe, the side wall of the water tank body is connected with a liquid outlet pipe, the inner wall of the liquid outlet pipe is detachably connected with a filter screen, and particles can be effectively prevented from entering a nozzle and a pipeline by cleaning and scraping the filter screen in real time, so as to maintain an unobstructed flow channel and avoid blockage, thereby maintaining unobstructed flow of the nozzle, ensuring uniform and delicate spraying, and improving the plant protection effect, and substances can be evenly mixed by real-time stirring, so as to evenly distribute the concentration and components of the solution, and ensure the uniformity and stability of the liquid medicine during spraying.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, and in particular to a plant protection machine for preventing over-watering of a local area. Background Art

[0002] Plant protection machine is a kind of agricultural machinery and equipment used for plant protection. It is mainly used in crop planting areas such as farmland, orchards, and vegetable greenhouses. It applies pesticides, insecticides, herbicides and other plant protection agents to crops through spraying, atomization, etc. to prevent and control pests and diseases and promote crop growth and yield. Plant protection machine is usually composed of liquid storage tank, pump, spray curtain, spray gun, control system, etc., which can accurately control the spraying amount and spraying range of liquid medicine, improve the production efficiency and quality of crops, and at the same time, plant protection machine is also conducive to reducing the use of pesticides and reducing the risk of pollution to the environment and human body;

[0003] The undissolved fertilizer contained in the mixed solution inside the plant protection machine will block the nozzle when it is discharged from the water tank, thereby affecting the flux of the solution, and then causing over-watering in some areas and under-watering in some areas.

[0004] Disadvantages of over-watering in local areas: When the plant protection machine over-waters a local area, it will lead to the waste of pesticides or nutrients, increase costs and resource consumption, and the excess pesticides or nutrients will seep into the soil and groundwater, causing environmental pollution and posing potential risks to the ecosystem and water resources. In addition, over-watering will harm non-target plants, insects and animals, and destroy the ecological balance.

[0005] The defect of insufficient irrigation in local areas: When the plant protection machine fails to fully cover and spray the entire area of ​​the farmland or orchard, pests and diseases cannot be effectively controlled, affecting the growth and yield of crops. If there is a lack of sufficient pesticides or nutrients in certain areas, the crops will show inconsistent growth states during the growth process, affecting the overall quality and yield of the crops. If supplementation and application of pesticides are required to make up for the deficiency, energy and labor costs will increase.

[0006] In view of this, the present invention proposes a plant protection machine for preventing over-watering of a local area to compensate for and improve the deficiencies of the prior art. Summary of the invention

[0007] In order to solve the above technical problems, the present invention provides a plant protection machine for preventing over-watering in local areas, so as to solve the technical problem of over-watering in local areas proposed in the above background technology.

[0008] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0009] A plant protection machine for preventing excessive watering in local areas comprises a water tank body, wherein the inner wall at the bottom of the water tank body is provided with a groove, the side wall of the water tank body is threadedly connected with a fixing screw plate, the top of the water tank body is detachably connected with a water tank cover, the top of the water tank cover is connected with a water injection pipe, the top of the water tank cover is connected with a fertilizer injection pipe, the side wall of the water tank body is connected with a liquid outlet pipe, the inner wall of the liquid outlet pipe is detachably connected with a filter, a real-time scraping mechanism is arranged inside the water tank body, a solid collecting mechanism is arranged inside the water tank body, and a water level warning mechanism is arranged inside the water tank body.

[0010] Furthermore, the real-time scraping mechanism includes a fixed rod detachably connected to the inner wall of the liquid outlet pipe, the side wall of the fixed rod is rotatably connected to a first transmission shaft, the end of the first transmission shaft close to the liquid outlet pipe is fixedly connected to a rotating rod, the end of the rotating rod close to the fixed rod is fixedly connected to a spring, the outer wall of the rotating rod is fixedly connected to a protective cover, the end of the spring away from the rotating rod is fixedly connected to a brush head, the inner wall of the liquid outlet pipe is fixedly connected to a boss, the outer wall of the first transmission shaft is fixedly connected to a driving shaft, and the end of the first transmission shaft away from the liquid outlet pipe is fixedly connected to a turbine.

[0011] Furthermore, the number of the fixed rod, the rotating rod, the spring, the protective cover, and the brush head are all set to plural, and are symmetrically distributed around the central axis of the liquid outlet pipe.

[0012] Furthermore, the number of the bosses is set to be no less than eight.

[0013] Furthermore, the inner wall size of the protective cover is matched with the outer wall size of the brush head.

[0014] Furthermore, the solid collection mechanism includes a driven shaft transmission-connected to the driving shaft, the inner wall of the driven shaft is fixedly connected to a second transmission rod, the end of the second transmission rod away from the water tank body is fixedly connected to a bidirectional threaded rod, the outer wall of the bidirectional threaded rod is threadedly connected to a threaded sleeve, the outer wall of the threaded sleeve is slidably connected to a slideway, the side wall of the threaded sleeve is fixedly connected to a connecting platform, the end of the connecting platform away from the threaded sleeve is fixedly connected to a scraper, a collection box is slidably connected to a groove opened on the inner wall of the bottom of the water tank body, and the end of the collection box away from the driven shaft is fixedly connected to a handle.

[0015] Furthermore, the driven shaft is connected to the driving shaft through a conveyor belt transmission, one end of the second transmission rod away from the bidirectional threaded rod is rotatably connected to the inner wall of the water tank body, and the scraper is arranged in an inclined manner and faces the direction of the collection box.

[0016] Furthermore, the water level warning mechanism includes a connecting rod fixedly connected to the top of the slide, the top of the connecting rod is rotatably connected to a telescopic rod, the top of the telescopic rod is fixedly connected to a foam board, the bottom of the foam board is fixedly connected to a striker, the side wall of the connecting rod is installed with a contact signal transmitter, and the outer side wall of the water tank body is detachably connected with an audible and visual alarm.

[0017] Furthermore, the contact signal transmitter is located on the movement path of the striker.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) When using the plant protection machine, clean and scrape the filter in real time. During use, there are solid particles, suspended matter, impurities, etc. in the pesticides or nutrients. These substances are easy to clog the nozzles or pipes. Real-time cleaning and scraping of the filter can effectively prevent these particles from entering the nozzles and pipes, maintain a smooth flow channel, and avoid blockage. When the filter is clogged, the liquid sprayed by the plant protection machine will become uneven, some areas will get too much liquid, while other areas will not get enough liquid. Real-time cleaning and scraping can ensure the uniformity of the filter, so that the liquid can be evenly distributed to the target area, avoiding over-watering of local areas. By cleaning the scraper filter in real time, the nozzle can be kept unobstructed, ensuring uniform and delicate spraying, and improving the plant protection effect. Blocked nozzles and pipes not only affect the plant protection effect, but also increase the workload of the equipment and reduce the working life of the equipment. Timely cleaning of the scraper filter can reduce blockage and resistance, reduce the load of the equipment, and extend the service life of the equipment. The most important thing is that the blocked filter needs to be cleaned and maintained frequently. If it is neglected, the filter will rupture or fail to work properly, further increasing the maintenance cost. Real-time cleaning of the scraper filter can remove impurities in time, reduce the frequency and workload of filter maintenance, and reduce maintenance costs.

[0020] (2) When using the plant protection machine, the mixed solution inside the water tank is stirred in real time. The mixed solution in the water tank may contain sediment, suspended matter or unevenly distributed pesticides. By stirring in real time, these substances can be evenly mixed, so that the concentration and composition of the solution are evenly distributed, ensuring the uniformity and stability of the liquid medicine during spraying. The evenly mixed liquid medicine can ensure that the effective ingredients of the pesticide or nutrient are fully dissolved and stably distributed, improve the uniformity and coverage of the application, and enhance the control effect on pests or crops. Some pesticides or solvents will precipitate when not in use. Stirring can prevent these substances from being deposited at the bottom of the water tank or in the pipe, reduce the risk of blockage during spraying, and ensure continuous and smooth operation. Most importantly, during the use of the plant protection machine, the concentration of the liquid medicine will fluctuate, for example, due to the precipitation or uneven distribution of the pesticide. By stirring, the concentration fluctuation can be reduced, the stability of the liquid medicine concentration can be maintained, the accuracy and consistency of the application can be improved, and the phenomenon of over-watering in local areas can be further avoided;

[0021] (3) When using the plant protection machine, the staff does not need to monitor the liquid level inside the water tank in real time. Instead, the machine will automatically alarm when it reaches a certain height. At this time, the staff does not need to pay attention to the liquid level in the water tank all the time and can focus on other tasks, thereby improving overall work efficiency. In addition, manual monitoring of the liquid level may lead to misjudgment or omission due to negligence or fatigue. The automatic alarm system can accurately and promptly issue an alarm, reducing the possibility of human error. A low liquid level may also cause the plant protection machine to malfunction or be damaged during operation. The automatic alarm system can promptly remind when the liquid level reaches a dangerously low water level, thereby avoiding damage to the equipment. By reducing manual monitoring and reducing equipment failures and maintenance costs caused by liquid level problems, the automatic alarm system helps reduce the operating costs of the plant protection machine. Most importantly, the plant protection machine needs to maintain a stable liquid level during operation to ensure the spraying effect. The automatic alarm system can help staff adjust the liquid level in a timely manner, thereby improving the quality of operation.

[0022] (4) When using the plant protection machine, solid matter inside the water tank should be collected in real time. The accumulation of solid matter will clog the pipes or nozzles of the water tank and affect the normal operation of the plant protection machine. Real-time collection of solid matter can ensure that the inside of the water tank is always kept clean and avoid clogging problems. The presence of solid matter will affect the fluidity and spraying effect of the liquid. Real-time collection of these solid matter can ensure that the sprayed liquid is more uniform and effective, thereby improving the effect of plant protection operations. The accumulation of solid matter in the water tank will cause wear or corrosion to the water tank wall and other components. By collecting these solid matter in real time, damage to the water tank and other components can be reduced, thereby extending the service life of the plant protection machine. Regular cleaning of solid matter inside the water tank requires manpower and time. If it is not cleaned in time, it will cause equipment failure over time and increase maintenance costs. Real-time collection of solid matter can reduce the frequency and difficulty of cleaning, thereby reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the main stereoscopic structure of the present invention;

[0024] Figure 2 It is a side view stereoscopic structural schematic diagram of the present invention;

[0025] Figure 3 It is a schematic diagram of the internal three-dimensional structure of the present invention;

[0026] Figure 4 For the present invention Figure 3 A schematic diagram of the partially enlarged three-dimensional structure at point A in the middle;

[0027] Figure 5 For the present invention Figure 4 A schematic diagram of the partially enlarged three-dimensional structure at B in the middle;

[0028] Figure 6 It is a partial cross-sectional three-dimensional structural schematic diagram of the real-time scraping mechanism of the present invention;

[0029] Figure 7 It is a cross-sectional three-dimensional structural schematic diagram of the real-time scraping mechanism of the present invention;

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure of the solid collection mechanism of the present invention;

[0031] Fig. 9 It is a cross-sectional three-dimensional structural schematic diagram of the solid collection mechanism of the present invention;

[0032] Fig.10 It is a three-dimensional structural schematic diagram of the water level early warning mechanism of the present invention.

[0033] The numbers in the figure are:

[0034] 1. Water tank body; 11. Fixing screw plate; 12. Water tank cover; 13. Water injection pipe; 14. Fertilizer injection pipe; 15. Liquid outlet pipe; 16. Filter screen

[0035] 2. Real-time scraping mechanism; 21. Fixed rod; 22. First transmission shaft; 23. Rotating rod; 24. Spring; 25. Protective cover; 26. Brush head; 27. Boss; 28. Driving shaft; 29. ​​Turbine;

[0036] 3. Solid collection mechanism; 31. Driven shaft; 32. Second transmission rod; 33. Bidirectional threaded rod; 34. Threaded sleeve; 35. Slideway; 36. Connecting platform; 37. Scraper; 38. Collection box; 39. Handle;

[0037] 4. Water level warning mechanism; 41. Connecting rod; 42. Telescopic rod; 43. Foam board; 44. Strike stick; 45. Contact signal transmitter; 46. Sound and light alarm. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention;

[0039] Embodiments of the present invention

[0040] Please refer to Figure 1 - Figure 3 As shown, it includes a water tank body 1, a groove is provided on the inner wall at the bottom of the water tank body 1, a fixing screw plate 11 is threadedly connected to the side wall of the water tank body 1, a water tank cover 12 is detachably connected to the top of the water tank body 1, a water injection pipe 13 is connected to the top of the water tank cover 12, a fertilizer injection pipe 14 is connected to the top of the water tank cover 12, a liquid outlet pipe 15 is connected to the side wall of the water tank body 1, a filter screen 16 is detachably connected to the inner wall of the liquid outlet pipe 15, a real-time scraping mechanism 2 is arranged inside the water tank body 1, a solid collecting mechanism 3 is arranged inside the water tank body 1, and a water level warning mechanism 4 is arranged inside the water tank body 1;

[0041] Please refer to Figure 4 - Figure 7 As shown, the real-time scraping mechanism 2 includes a fixed rod 21 detachably connected to the inner wall of the liquid outlet pipe 15, a first transmission shaft 22 is rotatably connected to the side wall of the fixed rod 21, a rotating rod 23 is fixedly connected to one end of the first transmission shaft 22 close to the liquid outlet pipe 15, a spring 24 is fixedly connected to one end of the rotating rod 23 close to the fixed rod 21, a protective sleeve 25 is fixedly connected to the outer wall of the rotating rod 23, a brush head 26 is fixedly connected to one end of the spring 24 away from the rotating rod 23, a boss 27 is fixedly connected to the inner wall of the liquid outlet pipe 15, a driving shaft 28 is fixedly connected to the outer wall of the first transmission shaft 22, and a turbine 29 is fixedly connected to one end of the first transmission shaft 22 away from the liquid outlet pipe 15;

[0042] Please refer to Figure 4 As shown, the number of the fixed rod 21, the rotating rod 23, the spring 24, the protective cover 25, and the brush head 26 are all set to plural, and are symmetrically distributed with respect to the central axis of the liquid outlet pipe 15;

[0043] Please refer to Figure 4 As shown, the number of bosses 27 is set to be no less than eight;

[0044] Please refer to Figure 5 and Figure 6 As shown, the inner wall size of the protective cover 25 matches the outer wall size of the brush head 26;

[0045] Please refer to Figure 8 and Fig. 9 As shown, the solid collecting mechanism 3 includes a driven shaft 31 drivingly connected to the driving shaft 28, the inner wall of the driven shaft 31 is fixedly connected with a second driving rod 32, the end of the second driving rod 32 away from the water tank body 1 is fixedly connected with a bidirectional threaded rod 33, the outer wall of the bidirectional threaded rod 33 is threadedly connected with a threaded sleeve 34, the outer wall of the threaded sleeve 34 is slidably connected with a slideway 35, the side wall of the threaded sleeve 34 is fixedly connected with a connecting platform 36, the end of the connecting platform 36 away from the threaded sleeve 34 is fixedly connected with a scraper 37, a collecting box 38 is slidably connected in a groove provided on the inner wall of the bottom of the water tank body 1, and the end of the collecting box 38 away from the driven shaft 31 is fixedly connected with a handle 39;

[0046] Please refer to Fig. 9 As shown, the driven shaft 31 is connected to the driving shaft 28 through a conveyor belt transmission, one end of the second transmission rod 32 away from the bidirectional threaded rod 33 is rotatably connected to the inner wall of the water tank body 1, and the scraper 37 is arranged in an inclined manner and faces the direction of the collection box 38;

[0047] Please refer to Figure 3 and Fig.10 As shown, the water level warning mechanism 4 includes a connecting rod 41 fixedly connected to the top of the slide 35, the top of the connecting rod 41 is rotatably connected to a telescopic rod 42, the top of the telescopic rod 42 is fixedly connected to a foam board 43, the bottom of the foam board 43 is fixedly connected to a striker 44, the side wall of the connecting rod 41 is installed with a contact signal emitter 45, and the outer side wall of the water tank body 1 is detachably connected with an audible and visual alarm 46;

[0048] When there is no solution in the water tank body 1, the operator will manually turn off the sound and light alarm 46, and when the operator injects solution into the water tank body 1, the operator will also manually turn on the sound and light alarm 46; when the contact signal emitter 45 is hit, a signal will be emitted, and the sound and light alarm 46 will automatically start upon receiving the signal, emit a sound and flash a light;

[0049] The telescopic rod 42 is not located in the middle of the water tank body 1, but is offset to one end close to the connecting rod 41. When the liquid level inside the water tank body 1 drops to 1 / 3 of the original level, the contact signal transmitter 45 is in the movement path of the striker 44.

[0050] Please refer to Fig.10 As shown, the contact signal transmitter 45 is located on the movement path of the striker 44.

[0051] The following are the complete usage steps and working principles of the above embodiment:

[0052] Preparation: The operator injects water into the water tank body 1 through the water injection pipe 13, injects fertilizer into the water tank body 1 through the fertilizer injection pipe 14, and turns on the sound and light alarm 46;

[0053] Formal work: The operator starts the machine, and the water and fertilizer mixture in the water tank body 1 will be discharged through the liquid outlet pipe 15. When the mixed solution passes through the liquid outlet pipe 15, it will first pass through the turbine 29. The Bernoulli principle shows that in an ideal fluid (a frictionless, non-viscous fluid), the pressure will decrease accordingly at the position where the flow rate increases. Therefore, when water flows out of the water tank body 1 and passes through the liquid outlet pipe 15, the flow rate will increase and the pressure will decrease. When this low-pressure water flow passes through the turbine 29, one side of the turbine 29 will be subjected to a greater pressure, while the other side will be subjected to a smaller pressure, forming a pressure difference. This pressure difference will generate a force, causing the turbine 29 to start rotating. Due to the turbine 29 It is fixedly connected to the end of the first transmission shaft 22 away from the liquid outlet pipe 15, so when the turbine 29 rotates, the first transmission shaft 22 will also rotate accordingly. Since the first transmission shaft 22 penetrates and is rotatably connected to the side wall of the fixed rod 21, the fixed rod 21 will limit the first transmission shaft 22. Since the end of the first transmission shaft 22 close to the liquid outlet pipe 15 is fixedly connected to the rotating rod 23, when the first transmission shaft 22 starts to rotate, the rotating rod 23 will also rotate accordingly. Since the rotating rod 23 is fixedly connected to the brush head 26 through the spring 24, the brush head 26 will also rotate with the rotation of the rotating rod 23. Since the boss 27 is fixedly connected to the inner wall of the liquid outlet pipe 15, And the boss 27 is located in the movement path of the brush head 26, so when the brush head 26 rotates, it will hit the boss 27. When the brush head 26 contacts the boss 27, the spring 24 will be compressed, and the brush head 26 will move in the direction close to the rotating rod 23, scraping on the filter screen 16. During use, there are solid particles, suspended matter, impurities, etc. in the pesticides or nutrients. These substances are easy to clog the nozzles or pipes. Real-time cleaning and scraping of the filter screen 16 can effectively prevent these particles from entering the nozzles and pipes, maintain an unobstructed flow channel, and avoid blockage. The nozzle is an important component of the plant protection machine for spraying pesticides or nutrient solutions. If the nozzle is blocked or affected, the spray quality will be reduced and it will not be possible to achieve Even spraying, by cleaning the scraper filter 16 in real time, the nozzle can be kept unobstructed, ensuring uniform and delicate spraying, and improving the plant protection effect. Blocked nozzles and pipes not only affect the plant protection effect, but also may increase the workload of the equipment and reduce the working life of the equipment. Timely cleaning of the scraper filter 16 can reduce blockage and resistance, reduce the load of the equipment, and extend the service life of the equipment. The most important thing is that the blocked filter 16 needs to be cleaned and maintained frequently. If it is neglected, it may cause the filter 16 to rupture or malfunction, further increasing the maintenance cost. Real-time cleaning of the scraper filter 16 can remove impurities in time, reduce the frequency and workload of the filter 16 maintenance, and reduce the maintenance cost.

[0054] Since the driving shaft 28 is fixedly connected to the outer wall of the first transmission shaft 22, when the first transmission shaft 22 starts to rotate, the driving shaft 28 will also rotate accordingly. Since the driving shaft 28 is connected to the driven shaft 31 through a conveyor belt transmission, the driven shaft 31 will also start to rotate. Since the inner wall of the driven shaft 31 is fixedly connected to the second transmission rod 32, the second transmission rod 32 will also start to rotate. Since the end of the second transmission rod 32 away from the driven shaft 31 is rotatably connected to the inner wall of the water tank body 1, the position of the second transmission rod 32 will be fixed. Since the end of the second transmission rod 32 away from the water tank body 1 is fixedly connected to the bidirectional threaded rod 33, the bidirectional threaded rod 33 The rod 33 will also start to rotate. Since the outer wall of the two-way threaded rod 33 is threadedly connected with the threaded sleeve 34, when the two-way threaded rod 33 starts to rotate, the threaded sleeve 34 will reciprocate along the outer wall of the two-way threaded rod 33. Since the threaded sleeve 34 is fixedly connected to the scraper 37 through the connecting platform 36, the scraper 37 will also reciprocate accordingly. When the scraper 37 moves away from the driven shaft 31, since the side of the scraper 37 away from the driven shaft 31 is wedge-shaped, and the bottom of the scraper 37 contacts the bottom surface of the inner wall of the water tank body 1, the fertilizer that is not completely dissolved in the water will be scooped up and float in the water again. When the scraper 37 moves closer to the driven shaft 31, When the scraper 37 moves in the direction of the water tank 1, since the side of the scraper 37 close to the driven shaft 31 is flat, the fertilizer submerged in the bottom surface of the water tank body 1 will be pushed into the collecting box 38. When a watering operation is completed, the operator holds the handle 39 to pull the collecting box 38 out of the water tank body 1, pours the accumulated sediment in the collecting box 38 into the designated position, and then rinses the collecting box 38 and pushes it back into the water tank body 1. When using the plant protection machine, the solid matter inside the water tank is collected in real time. The accumulation of solid matter may block the pipe or nozzle of the water tank and affect the normal operation of the plant protection machine. The real-time collection of solid matter can ensure that the inside of the water tank is always kept clean and avoid Blockage problem: the presence of solids may affect the fluidity and spraying effect of the liquid. Real-time collection of these solids can ensure that the sprayed liquid is more uniform and effective, thereby improving the effect of plant protection operations. The accumulation of solids in the water tank may cause wear or corrosion to the water tank wall and other components. By collecting these solids in real time, damage to the water tank and other components can be reduced, thereby extending the service life of the plant protection machine. Regular cleaning of solids inside the water tank requires manpower and time, and if not cleaned in time, it may cause equipment failure and increase maintenance costs. Real-time collection of solids can reduce the frequency and difficulty of cleaning, thereby reducing maintenance costs;

[0055] After the mixed solution of water and fertilizer is poured into the water tank body 1, since the density of the foam board 43 is less than that of the mixed solution, the foam board 43 will float above the water surface of the mixed solution. When the mixed solution inside the water tank body 1 is discharged outward through the liquid outlet pipe 15, since the position of the telescopic rod 42 is not in the middle of the water tank body 1, but is offset to one end close to the connecting rod 41, and since there is a flow velocity difference between the side of the telescopic rod 42 close to the inner wall of the water tank body 1 and the side away from the inner wall of the water tank body 1, the telescopic rod 42 will rotate. At the bottom of the foam plate 43, when the telescopic rod 42 rotates, the water injection pipe 13 will also rotate accordingly. Since the bottom of the foam plate 43 is fixedly connected with a striker 44, the striker 44 will also begin to rotate accordingly. When the water level inside the water tank body 1 begins to drop, the foam plate 43 will also drop with the drop of the water level. When the internal liquid level of the water tank body 1 drops to 1 / 3, since the contact signal transmitter 45 is located in the movement path of the striker 44, the striker 44 will hit the contact signal transmitter 45, which is equivalent to pressing the contact signal transmitter 45. The contact signal transmitter 45 will send a signal, and the sound and light alarm 46 will start to make a sound and light up after receiving the signal, reminding the staff that the mixed solution in the water tank is about to run out and needs to be refilled. The staff does not need to monitor the liquid level inside the water tank in real time, but automatically alarms after reaching a certain height. At this time, the staff does not need to pay attention to the liquid level in the water tank all the time and can focus on other tasks, thereby improving the overall work efficiency. In addition, manual monitoring of the liquid level may lead to misjudgment or omission due to negligence or fatigue. The automatic alarm system can accurately and timely issue an alarm, reducing the possibility of human error. A low liquid level may also cause the plant protection machine to malfunction or be damaged during operation. The automatic alarm system can promptly remind when the liquid level reaches a dangerously low water level, thereby avoiding damage to the equipment. By reducing manual monitoring and reducing equipment failures and maintenance costs caused by liquid level problems, the automatic alarm system helps to reduce the operating cost of the plant protection machine. The most important thing is that the plant protection machine needs to maintain a stable liquid level during operation to ensure the spraying effect. The automatic alarm system can help the staff adjust the liquid level in time, thereby improving the quality of operation.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plant protection machine for preventing over-watering of a local area, comprising a water tank body (1), characterized in that: The inner wall at the bottom of the water tank body (1) is provided with a groove, the side wall of the water tank body (1) is threadedly connected with a fixing screw plate (11), the top of the water tank body (1) is detachably connected with a water tank cover (12), the top of the water tank cover (12) is connected with a water injection pipe (13), the top of the water tank cover (12) is connected with a fertilizer injection pipe (14), the side wall of the water tank body (1) is connected with a liquid outlet pipe (15), the inner wall of the liquid outlet pipe (15) is detachably connected with a filter screen (16), a real-time scraping mechanism (2) is arranged inside the water tank body (1), a solid collection mechanism (3) is arranged inside the water tank body (1), and a water level warning mechanism (4) is arranged inside the water tank body (1); The real-time scraping mechanism (2) comprises a fixed rod (21) detachably connected to the inner wall of the liquid outlet pipe (15); a first transmission shaft (22) is rotatably connected to the side wall of the fixed rod (21); an end of the first transmission shaft (22) close to the liquid outlet pipe (15) is fixedly connected to a rotating rod (23); an end of the rotating rod (23) close to the fixed rod (21) is fixedly connected to a spring (24); an outer wall of the rotating rod (23) is fixedly connected to a protective sleeve (25); an end of the spring (24) away from the rotating rod (23) is fixedly connected to a brush head (26); an inner wall of the liquid outlet pipe (15) is fixedly connected to a boss (27); an outer wall of the first transmission shaft (22) is fixedly connected to a driving shaft (28); and an end of the first transmission shaft (22) away from the liquid outlet pipe (15) is fixedly connected to a turbine (29); The number of the fixed rod (21), the rotating rod (23), the spring (24), the protective cover (25), and the brush head (26) are all set to be plural, and are symmetrically distributed around the central axis of the liquid outlet pipe (15); The number of the bosses (27) is set to be no less than eight; The inner wall size of the protective cover (25) is adapted to the outer wall size of the brush head (26); The solid collection mechanism (3) comprises a driven shaft (31) drivingly connected to the driving shaft (28); the inner wall of the driven shaft (31) is fixedly connected to a second transmission rod (32); the end of the second transmission rod (32) away from the water tank body (1) is fixedly connected to a bidirectional threaded rod (33); the outer wall of the bidirectional threaded rod (33) is threadedly connected to a threaded sleeve (34); the outer wall of the threaded sleeve (34) is slidably connected to a slideway (35); the side wall of the threaded sleeve (34) is fixedly connected to a connecting platform (36); the end of the connecting platform (36) away from the threaded sleeve (34) is fixedly connected to a scraper (37); a collection box (38) is slidably connected to a groove provided on the inner wall of the bottom of the water tank body (1); and the end of the collection box (38) away from the driven shaft (31) is fixedly connected to a handle (39); The driven shaft (31) is connected to the driving shaft (28) via a conveyor belt transmission, one end of the second transmission rod (32) away from the bidirectional threaded rod (33) is rotatably connected to the inner wall of the water tank body (1), and the scraper (37) is arranged in an inclined manner and faces the direction of the collection box (38); The water level warning mechanism (4) comprises a connecting rod (41) fixedly connected to the top of the slideway (35); the top of the connecting rod (41) is rotatably connected to a telescopic rod (42); the top of the telescopic rod (42) is fixedly connected to a foam board (43); the bottom of the foam board (43) is fixedly connected to a striker (44); a contact signal emitter (45) is installed on the side wall of the connecting rod (41); and an audible and visual alarm (46) is detachably connected to the outer side wall of the water tank body (1); The contact signal transmitter (45) is located on the movement path of the striker (44).

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