A medicine spraying device

Abstract

The application relates to the technical field of agricultural pest control, and particularly discloses a pesticide spraying device, which is provided with a through groove for placing crops on a supporting plate, a cutting assembly is used for rubbing and breaking the leaves of crops, an air pipe is fixedly connected between an air extractor and the supporting plate, the air extractor can perform air extraction on the supporting plate, a pneumatic control assembly is in communication with the air pipe and electrically connected with a pesticide sprayer, and the pneumatic control assembly can make the pesticide sprayer generate different spraying powers based on the change of the air volume in the air pipe. The cutting assembly is used for rubbing and breaking the leaves of wheat, at this time, the air extractor is started to perform air extraction on the supporting plate, if there is no or few broken leaves on the supporting plate to block the air pipe in communication with the air extractor, the air volume in the air pipe is increased, the pneumatic control assembly acts based on the change of the air volume in the air pipe, and then the pesticide sprayer generates different spraying powers to complete different pesticide spraying amounts, and the pesticide resources are reasonably distributed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of agricultural pest control technology, and in particular to a pesticide spraying device. BACKGROUND

[0002] Pesticide refers to a chemical agent used for preventing and treating pests and regulating plant growth in agriculture, which is widely used in agricultural production, environmental and household hygiene, and industrial product mildew and insect prevention.

[0003] Aphids mainly harm the back of leaves, leaf sheaths and leaf centers during the wheat seedling stage; after the wheat jointing stage, they mainly harm the stems, leaves and ears, and excrete honeydew, affecting respiration and photosynthesis, and causing the affected parts to appear light yellow spots, resulting in leaf yellowing and even whole plant death; during the wheat filling and milk ripening stages, wheat aphids reach the peak of occurrence, which can cause insufficient wheat filling and lead to yield reduction. In the prior art, pesticide spraying devices are generally used to prevent and control wheat pests, and the amount of pesticide sprayed for wheat with different degrees of pests is constant, which makes the allocation of pesticide resources unreasonable and even causes waste of pesticide resources to some extent. SUMMARY

[0004] The purpose of the present application is to provide a pesticide spraying device that can control the amount of pesticide sprayed based on the degree of wheat pest damage, thereby achieving reasonable allocation of pesticide resources.

[0005] To achieve the above purpose, the present application adopts the following technical solutions:

[0006] The present application provides a pesticide spraying device, which comprises:

[0007] A supporting plate and a cutting assembly, wherein the supporting plate is provided with a through slot for placing crops, and the cutting assembly is arranged on the supporting plate and used for rubbing and breaking the leaves of crops;

[0008] An air extractor and an air pipe, wherein the air pipe is fixedly connected between the air extractor and the supporting plate, and the air extractor can extract air to the supporting plate;

[0009] A pesticide sprayer, which is used for spraying pesticides to the crops;

[0010] A pneumatic control assembly, which can change the spraying power of the pesticide sprayer based on the change of the air volume in the air pipe.

[0011] The pneumatic control assembly comprises a guide cylinder, a slide rod and a piston, the guide cylinder is internally provided with a cavity, a plurality of contact pieces are arranged on the inner wall of the cavity at intervals, the piston is arranged in the cavity and is in sliding connection with the guide cylinder, a contact ring corresponding to the contact pieces is fixedly sleeved on the piston, the slide rod is partially located in the cavity, the first end of the slide rod is fixedly connected with the piston, the first end of the guide cylinder is in communication with the air pipe, the second end of the guide cylinder is in sliding sleeving connection with the slide rod, the contact ring and the plurality of contact pieces are made of conductive material, and the spraying device further comprises a wire, and the plurality of contact pieces are in conductive connection with the sprayer through the wire.

[0012] The pneumatic control assembly further comprises a first spiral spring, the first spiral spring is sleeved on the slide rod, the second end of the slide rod is provided with a first fixing portion, and the two ends of the first spiral spring are respectively in abutment with the second end of the guide cylinder and the first fixing portion.

[0013] The spraying device further comprises a first motor, a connecting shaft and a first gear, the first motor is fixedly connected to the supporting plate, the first gear is fixedly sleeved on the connecting shaft, the first motor is in transmission connection with the connecting shaft and can drive the connecting shaft to rotate, and the first gear can be in abutment with the supporting plate in rotation.

[0014] The spraying device further comprises a fan, and the fan is arranged on the supporting plate and can blow air to the broken blades on the supporting plate.

[0015] The spraying device further comprises a fixed rod, a first sliding block, a guide rail and a cover body, the first sliding block is in sliding connection with the guide rail and is fixedly connected with the fixed rod, the guide rail is fixedly connected with the supporting plate, the cover body is fixedly connected with the fixed rod and is used for covering the crops, and the cutting assembly is fixedly connected with the cover body.

[0016] The spraying device further comprises a guide block, a fixed plate, a shoulder strap and a pull rod, the first end of the pull rod is connected with the fixed rod, the second end of the pull rod is in sliding penetration with the guide block, the guide block is fixedly connected with the fixed plate, and the shoulder strap is fixedly connected with the fixed plate.

[0017] The spraying device further comprises a second spiral spring and a second fixing portion, the second fixing portion is sleeved on the pull rod, and the second spiral spring is sleeved on the pull rod and has two ends in abutment with the guide block and the second fixing portion respectively.

[0018] The spraying device further comprises a second sliding block, and the second sliding block is in sliding connection with the fixed rod and is fixedly connected with the pull rod.

[0019] The medicine spraying device further comprises a first locking member and a second locking member, the first locking member is used for locking or unlocking the relative position of the second sliding block and the fixed rod, and the second locking member is used for locking or unlocking the relative position of the guide block and the pull rod.

[0020] The present application has the following advantages:

[0021] The present application provides a medicine spraying device, which comprises a supporting plate, a cutting assembly, an air extractor, an air pipe, a medicine sprayer and a pneumatic control assembly. The supporting plate is provided with a through groove for placing crops. The cutting assembly is arranged on the supporting plate and used for rubbing and breaking the leaves of crops. The air pipe is fixedly connected between the air extractor and the supporting plate, and the air extractor can extract air to the supporting plate. The medicine sprayer is used for spraying pesticide to crops. The pneumatic control assembly is in communication with the air pipe and electrically connected with the medicine sprayer. The pneumatic control assembly can make the medicine sprayer produce different spraying power based on the change of the air volume in the air pipe. In this way, when in use, the leaves of wheat are first rubbed and broken by the cutting assembly. At this time, the air extractor is started to extract air to the supporting plate. If there is no broken leaf to block the supporting plate or there are few broken leaves, the air volume in the air pipe connected with the air extractor will be increased. However, this also indicates that there are more dry leaves at this position, and the degree of disease and pest of wheat is more serious. The pneumatic control assembly acts based on the change of the air volume in the air pipe, so that the medicine sprayer produces different spraying power to complete different spraying amount of pesticide, thereby realizing the control of the spraying amount of pesticide based on the different degree of disease and pest of wheat, and realizing the reasonable allocation of pesticide resources. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The structure schematic view of the medicine spraying device provided by the present application is shown in the figure.

[0023] Figure 2 The structure schematic view of the pneumatic control assembly provided by the present application is shown in the figure.

[0024] Figure 3 The cross-sectional view of the supporting plate provided by the present application is shown in the figure.

[0025] Wherein:

[0026] 1, supporting plate; 101, through groove;

[0027] 2, air extractor; 3, air pipe; 4, medicine sprayer;

[0028] 5, pneumatic control assembly; 51, guide cylinder; 511, contact sheet; 512, cavity; 52, sliding rod; 53, piston; 54, first spiral spring; 55, first fixed part;

[0029] 6, support frame; 7, wire; 8, first motor; 9, first gear; 10, fan; 11, fixed rod; 12, first sliding block; 13, guide rail; 14, cover body; 15, first mounting plate; 16, second motor; 17, first rotating shaft; 18, first pulley; 19, second mounting plate; 20, second rotating shaft; 21, second pulley; 22, cutting disc; 23, synchronous belt; 24, support; 25, guide block; 26, fixed plate; 27, back strap; 28, pull rod; 29, pull ring; 30, hook; 31, second sliding block; 32, second locking piece; 33, second spiral spring; 34, second fixed part; 35, connecting shaft. DETAILED DESCRIPTION

[0030] Embodiments of the present application are described in detail below with reference to the attached drawings, wherein the same or similar components have the same or similar designations throughout the various figures. The embodiments described below are exemplary in nature, and are intended to be illustrative of the present application rather than to limit the same.

[0031] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0032] Unless otherwise clearly specified and limited, the terms "mounting", "connection", "connection", "fixing" should be understood broadly, for example, it can be fixed connection, or detachable connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] Unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0035] Please refer to Figure 1 and Figure 3 As shown, this embodiment provides a spraying device, which includes a tray 1, a cutting assembly, a blower 2, an air duct 3, a sprayer 4, and a pneumatic control assembly 5. The tray 1 has a through groove 101 for placing crops. The cutting assembly is mounted on the tray 1 and is used to rub and crush the crop leaves. The air duct 3 is fixedly connected between the blower 2 and the tray 1, and the blower 2 can draw air onto the tray 1. The sprayer 4 is used to spray pesticides onto the crops. The pneumatic control assembly 5 can adjust the spraying power of the sprayer 4 based on changes in the ventilation volume within the air duct 3. In this embodiment, the crop is specifically wheat; in other embodiments, the crop can be set according to specific needs. In this setup, during operation, the wheat leaves are first crushed by friction using the cutting component. Then, the exhaust fan 2 is activated to ventilate the tray 1. If there are few or no broken leaves obstructing the tray 1, the ventilation volume in the ventilation pipe 3 connected to the exhaust fan 2 will increase. This also indicates a higher concentration of lighter, withered leaves at this location, suggesting a more severe pest or disease infestation. The pneumatic control component 5 reacts based on the change in ventilation volume in the ventilation pipe 3, causing the sprayer 4 to generate different spraying power to achieve different pesticide spraying amounts. This allows for control of pesticide spraying based on the severity of pests and diseases in the wheat, achieving rational allocation of pesticide resources. It should be noted that if the wheat is severely affected by pests and diseases, there will be fewer plump broken leaves and more withered leaves. Since withered leaves are lighter, they will further reduce their obstruction effect on the exhaust fan 2, thus increasing the ventilation volume in the ventilation pipe 3.

[0036] Optionally, to improve the stability of the connection between the exhaust fan 2 and the support plate 1, a support frame 6 is fixedly connected between the exhaust fan 2 and the support plate 1. Furthermore, support frames 6 can be provided on both sides of the exhaust fan 2.

[0037] Optionally, please refer to Figure 2 As shown in the figure, the pneumatic control assembly 5 includes a guide cylinder 51, a sliding rod 52 and a piston 53, the guide cylinder 51 is provided with a cavity 512, a plurality of contact pieces 511 are arranged on the inner wall of the cavity 512 at intervals, the piston 53 is arranged in the cavity 512 and is in sliding connection with the guide cylinder 51, a contact ring corresponding to the contact pieces 511 is fixedly sleeved on the piston 53, the sliding rod 52 is partially located in the cavity 512, and a first end of the sliding rod 52 is fixedly connected with the piston 53, a first end of the guide cylinder 51 is in communication with the air pipe 3, and a second end of the guide cylinder 51 is sleeved with the sliding rod 52, the contact ring and the plurality of contact pieces 511 are both made of conductive material, and the pesticide spraying device further includes a wire 7, and the plurality of contact pieces 511 can be conductively connected with the pesticide sprayer 4 through the wire 7. Specifically, the contact ring is made of copper.

[0038] In this way, the first end of the guide cylinder 51 is in communication with the air pipe 3, and the gas in the air pipe 3 will give the piston 53 an acting force, so that the piston 53 slides in the guide cylinder 51, and based on the situation that the blades on the supporting plate 1 are broken, different amounts of gas will be generated in the air pipe 3, which will give the piston 53 different acting forces, which will make the piston 53 have different sliding positions in the guide cylinder 51, and then the contact ring sleeved on the piston 53 will contact the contact pieces 511 at different positions, thereby generating different resistance values, and then the pesticide sprayer 4 conductively connected with the guide cylinder 51 through the wire 7 will generate different spraying powers. It should be noted that the pneumatic control assembly 5 can be essentially regarded as a "sliding resistor", and the pesticide sprayer 4 is internally provided with a power supply, and different spraying powers are provided for pesticides by changing the resistance value in the power supply connection circuit, and the technical structure for realizing the spraying of pesticides by the power supply is prior art, which will not be described here.

[0039] Optionally, in order to further buffer the acting force given to the piston 53 when it is reset and reduce the impact force of the piston 53 on the inner wall of the cavity 512 of the guide cylinder 51 when it is reset, the pneumatic control assembly 5 further includes a first spiral spring 54, the first spiral spring 54 is sleeved on the sliding rod 52, a first fixed portion 55 is arranged at a second end of the sliding rod 52, and the two ends of the first spiral spring 54 abut against the second end of the guide cylinder 51 and the first fixed portion 55 respectively. Of course, in other embodiments, the first spiral spring 54 can also be arranged between the piston 53 and the bottom of the cavity 512.

[0040] Optionally, the spraying device also includes a first motor 8, a connecting shaft 35, and a first gear 9. The first motor 8 is fixedly connected to the support plate 1, and the first gear 9 is fixedly sleeved on the connecting shaft 35. The first motor 8 is drively connected to the connecting shaft 35 and can drive the connecting shaft 35 to rotate. The first gear 9 can rotate and abut against the support plate 1. With this configuration, the rotational abutment between the first gear 9 and the support plate 1 can cause the support plate 1 to shake, thereby forming a vibrating screen with the first motor 8, which can screen the crushed leaves. Furthermore, in order to improve the screening effect of the crushed leaves on the support plate 1, the first motor 8 is set as a forward and reverse reversible motor. By changing the rotation direction of the first gear 9, the first gear 9 can exert abutment force on the support plate 1 in different directions, ultimately achieving the left and right shaking of the support plate 1.

[0041] Optionally, the spraying device also includes a blower 10, which is mounted on the pallet 1 and can blow air onto the broken leaves on the pallet 1. With this configuration, based on the sieving of the broken leaves by the vibrating screen formed by the pallet 1 and the first motor 8, the blower 10 can blow away the lighter dead leaves, leaving full broken leaves on the pallet 1. This makes the situation of broken leaves on the pallet 1 clearer, so that the subsequent pneumatic control component 5 can reasonably control the sprayer 4 to generate different spraying power based on the actual situation of broken leaves on the pallet 1.

[0042] Optionally, the spraying device also includes a cylinder, which is fixedly connected to the support plate 1. The blower 10 is fixedly connected to the telescopic end of the cylinder, so that the blower 10 can move left and right, which is beneficial to the overall operation and control of the blower 10. The wind force can also be controlled by adjusting the distance between the blower 10 and the breaking blades on the support plate 1.

[0043] Optionally, the spraying device also includes a fixed rod 11, a first slider 12, a guide rail 13, and a cover 14. The first slider 12 is slidably connected to the guide rail 13 and fixedly connected to the fixed rod 11. The guide rail 13 is fixedly connected to the support plate 1. The cover 14 is fixedly connected to the fixed rod 11 and is used to cover the crops. The cutting component is fixedly connected to the cover 14. With this configuration, the fixed rod 11 slides on the guide rail 13, thereby driving the cutting component fixedly connected to the cover 14 to move, which can further determine the degree of pests and diseases at different locations of the wheat placed in the trough 101. Optionally, to further facilitate the cutting component to contact different locations of the wheat, the guide rail 13 has a U-shaped structure and is arranged around the trough 101. Optionally, the cover 14 is U-shaped, which can block the debris generated by the cutting component during the friction and crushing of the wheat leaves, preventing environmental pollution.

[0044] In this embodiment, the cutting assembly includes a first mounting plate 15, a second motor 16, a first rotating shaft 17, a first pulley 18, a second mounting plate 19, a second rotating shaft 20, a second pulley 21, a cutting disc 22, and a timing belt 23. The first mounting plate 15 is fixedly connected between the outer wall of the cover 14 and the second motor 16. The second motor 16 is drivenly connected to the first rotating shaft 17 and can drive the first rotating shaft 17 to rotate. The first pulley 18 is fixedly sleeved on the first rotating shaft 17. The second mounting plate 19 is fixedly connected to the inner wall of the cover 14. The second rotating shaft 20 is rotatably connected to the second mounting plate 19. The cutting disc 22 and the second pulley 21 are both fixedly sleeved on the second rotating shaft 20. The cutting disc 22 is used to rub and crush the wheat leaves. The timing belt 23 is simultaneously sleeved on the first pulley 18 and the second pulley 21. In this embodiment, a rolling bearing is also provided on the second mounting plate 19. The outer ring of the rolling bearing is fixedly connected to the second mounting plate 19, and the inner ring of the rolling bearing is fixedly sleeved on the second rotating shaft 20 to realize the rotational connection between the second rotating shaft 20 and the second mounting plate 19.

[0045] Optionally, to improve the crushing effect on wheat leaves, cutting components can be provided on both sides of the wheat. In this embodiment, to further improve the friction crushing effect of the cutting disc 22 on wheat leaves and extend the service life of the cutting disc 22, a rubber sleeve is provided on the outer side of the cutting disc 22.

[0046] Optionally, the spraying device also includes a bracket 24, which is fixedly connected between the fixed rod 11 and the first motor 8. A rack is provided on the guide rail 13, and the first gear 9 meshes with the rack. Through the meshing of the first gear 9 and the rack, the vibration can be further transmitted to the pallet 1, so as to further realize the left and right swaying of the pallet 1.

[0047] Optionally, the spraying device also includes a guide block 25, a fixing plate 26, a shoulder strap 27, and a pull rod 28. The first end of the pull rod 28 is connected to the fixing rod 11, and the second end of the pull rod 28 slides through the guide block 25. The guide block 25 is fixedly connected to the fixing plate 26, and the shoulder strap 27 is fixedly connected to the fixing plate 26. With this configuration, when using the spraying device, the operator can carry the fixing plate 26 on their chest via the shoulder strap 27. The operator can pull the pull rod 28 to adjust the overall height of the cover 14, which is suitable for wheat at various heights within the trough 101. Furthermore, to facilitate manual pulling of the pull rod 28, a pull ring 29 is provided at the second end of the pull rod 28. Optionally, to further facilitate the storage and retrieval of the sprayer 4, a hook 30 is provided on the shoulder strap 27, and a hanging ring corresponding to the hook 30 is provided on the sprayer 4. When not in use, the sprayer 4 can be hung on the hook 30.

[0048] Optionally, to further facilitate the adjustment of the overall height of the device, the spraying device also includes a second slider 31, which is slidably connected to the fixed rod 11 and fixedly connected to the pull rod 28.

[0049] Optionally, to facilitate the operation of the spraying device, the spraying device further includes a first locking member and a second locking member 32. The first locking member is used to lock or unlock the relative position of the second slider 31 and the fixed rod 11, and the second locking member 32 is used to lock or unlock the relative position of the guide block 25 and the pull rod 28.

[0050] In this embodiment, the first locking element is a first bolt, which is threadedly connected to the second slider 31 and can be abutted or separated from the fixing rod 11. When it is necessary to lock the relative position between the second slider 31 and the fixing rod 11, the first bolt is screwed on to abut against the fixing rod 11 to achieve locking and limiting. The second locking element 32 is a second bolt, which is threadedly connected to the guide block 25 and can abut against or separate from the pull rod 28. When it is necessary to lock the relative position between the guide block 25 and the pull rod 28, the second bolt is screwed on to abut against the pull rod 28 to achieve locking and limiting. Furthermore, the fixing rod 11 or the pull rod 28 may also be provided with a plurality of first slots and a plurality of second slots corresponding to the first bolt or the second bolt, and the corresponding locking and limiting can be achieved by threading the first bolt or the second bolt with the corresponding first slot or the second slot.

[0051] Of course, in other embodiments, the first locking member can also be configured as a first fixing pin, the second slider 31 is provided with a first positioning hole, and the fixing rod 11 is provided with a plurality of second positioning holes. When it slides to a suitable position and needs to be locked and limited, the first positioning hole is aligned with one of the plurality of second positioning holes, and the first fixing pin can be passed through the first positioning hole and the second positioning hole at the same time to lock the fixing rod 11 and the second slider 31, thereby locking the relative position between the fixing rod 11 and the second slider 31. Similarly, the second locking member 32 can also be configured as a second fixing pin, the guide block 25 is provided with a third positioning hole, and the pull rod 28 is provided with a plurality of fourth positioning holes. When it slides to a suitable position and needs to be locked and limited, the third positioning hole is aligned with one of the plurality of fourth positioning holes, and the second fixing pin can be passed through the third positioning hole and the fourth positioning hole at the same time to lock the guide block 25 and the pull rod 28, thereby locking the relative position between the guide block 25 and the pull rod 28.

[0052] Optionally, in order to further limit the range of height adjustment of the pull rod 28 and make the overall height adjustment of the device controllable, the spraying device also includes a second helical spring 33 and a second fixing part 34. The second fixing part 34 is sleeved on the pull rod 28, and the second helical spring 33 is sleeved on the pull rod 28, with the two ends of the second helical spring 33 abutting against the guide block 25 and the second fixing part 34 respectively.

[0053] In this embodiment, the second fixing part 34 is a nut, and the nut is threadedly connected to the pull rod 28. In specific operation, the position of the nut on the pull rod 28 can be adjusted by turning the nut, so as to further adjust the range of height increase of the pull rod 28.

[0054] The working principle of this spraying device is as follows:

[0055] First, place the wheat in the through slot 101 of the spraying device. Before performing any specific operations, lock the second slider 31 to a suitable position on the fixing rod 11 using the first locking member. Then, the operator carries the fixing plate 26 on their chest using the shoulder strap 27, which is equipped with hooks 30. The sprayer 4 is then suspended from the hooks 30 on the shoulder strap 27. The operator can adjust the overall height of the cover 14 by pulling the lever 28 to accommodate wheat of different heights.

[0056] At this time, the second motor 16 is started to drive the first shaft 17 to drive the first pulley 18 to rotate. The first pulley 18 drives the synchronous belt 23 to rotate, the synchronous belt 23 drives the second pulley 21 to rotate, and the second pulley 21 drives the second shaft 20 to rotate. Finally, the cutting disc 22 is driven to rotate, and it is used to rub and crush the wheat leaves. If the wheat is severely affected by pests and diseases, there will be fewer plump leaves and more withered leaves among the crushed leaves. The withered leaves are relatively light and will fall onto the pallet 1. The withered leaves will be screened by the vibrating screen formed by the pallet 1 and the first motor 8, which makes the pallet 1 sway left and right, and the blower 10. The lighter leaves will be blown away, and the plump leaves will remain on the pallet 1.

[0057] At this time, the exhaust fan 2 is started to draw air onto the tray 1. If there are no broken leaves or very few broken leaves on the tray 1, it means that there are more lightweight dead leaves at this position, which will further reduce the obstruction effect on the exhaust fan 2 during air extraction, thereby increasing the ventilation volume in the vent pipe 3. When the amount of gas flowing in the vent pipe 3 increases, it will exert a larger force on the piston 53, causing the piston 53 to have a larger sliding range within the cavity 512 of the guide cylinder 51. When the piston 53 is contacted by the outer sleeve... When the ring contacts the contact piece 511 at the corresponding position, the resistance value of the power supply in the sprayer 4 through the external connection circuit of the wire 7 is reduced, thereby increasing the spraying power of the pesticide by the power supply in the sprayer 4, ultimately increasing the spraying volume of the sprayer 4. Essentially, this can be seen as "shifting gears" of the sprayer 4 through the pneumatic control component 5. When the broken wheat leaves are relatively moist and plump, it indicates that the corresponding wheat leaves are relatively new, and the degree of pest and disease damage is relatively mild, thus allowing for better control during the application of pesticides. Under the combined effect of the left-right swaying of plate 1 and the blowing of fan 10, only a small portion of the withered leaves are blown away, while the vast majority of plump, broken leaves remain on plate 1. At this point, when exhaust fan 2 draws air from plate 1 through vent pipe 3, the majority of the plump, broken leaves significantly obstruct the exhaust fan 2, further reducing the ventilation volume within vent pipe 3. This reduced airflow within vent pipe 3 exerts a small force on piston 53, causing piston 53 to move within the cavity 512 of guide cylinder 51. With a relatively small sliding position, when the contact ring on the outer sleeve of the piston 53 contacts the contact piece 511 at the corresponding position, the resistance value in the connection circuit of the power supply in the sprayer 4 through the wire 7 will increase. This will cause the power supply in the sprayer 4 to generate a smaller spray power for the pesticide, which will ultimately reduce the amount of pesticide sprayed by the sprayer 4. This allows the sprayer 4 to generate different spray power to complete different amounts of pesticide spraying, thereby realizing the control of the amount of pesticide sprayed based on the different degrees of pests and diseases in wheat, and achieving the rational allocation of pesticide resources.

[0058] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A spraying device, characterized in that, include: The tray (1) and the cutting component are provided. The tray (1) is provided with a through groove (101) for placing crops. The cutting component is set on the tray (1) and is used to rub and crush the leaves of the crops. The exhaust fan (2) and the ventilation pipe (3) are fixedly connected between the exhaust fan (2) and the tray (1), and the exhaust fan (2) can exhaust air onto the tray (1); A sprayer (4) is used to spray pesticides onto the crops; The pneumatic control component (5) is capable of generating different spraying power for the sprayer (4) based on the change in the ventilation volume in the vent pipe (3); The pneumatic control assembly (5) includes a guide cylinder (51), a slide rod (52), and a piston (53). The guide cylinder (51) has a cavity (512) inside, and a plurality of contact pieces (511) are spaced apart on the inner wall of the cavity (512). The piston (53) is disposed within the cavity (512) and slidably connected to the guide cylinder (51). A contact ring corresponding to the contact piece (511) is fixedly sleeved on the piston (53). The slide rod (52) is partially located within the cavity (512). Inside the cavity (512), the first end of the slide rod (52) is fixedly connected to the piston (53), the first end of the guide cylinder (51) is connected to the vent pipe (3), the second end of the guide cylinder (51) is slidably sleeved on the slide rod (52), the contact ring and several contact pieces (511) are all made of conductive material, the spraying device also includes a wire (7), and several contact pieces (511) can be electrically connected to the sprayer (4) through the wire (7).

2. The spraying device according to claim 1, characterized in that, The pneumatic control assembly (5) further includes a first helical spring (54), which is sleeved on the slide rod (52). The second end of the slide rod (52) is provided with a first fixing part (55), and the two ends of the first helical spring (54) respectively abut against the second end of the guide cylinder (51) and the first fixing part (55).

3. The spraying device according to claim 1, characterized in that, The spraying device also includes a first motor (8), a connecting shaft (35) and a first gear (9). The first motor (8) is fixedly connected to the tray (1), and the first gear (9) is fixedly sleeved on the connecting shaft (35). The first motor (8) is connected to the connecting shaft (35) and can drive the connecting shaft (35) to rotate. The first gear (9) can rotate and abut against the tray (1).

4. The spraying device according to claim 3, characterized in that, The spraying device also includes a fan (10), which is disposed on the pallet (1) and is capable of blowing air onto the broken blades on the pallet (1).

5. The spraying device according to any one of claims 1-4, characterized in that, The spraying device also includes a fixed rod (11), a first slider (12), a guide rail (13) and a cover (14). The first slider (12) is slidably connected to the guide rail (13) and fixedly connected to the fixed rod (11). The guide rail (13) is fixedly connected to the pallet (1). The cover (14) is fixedly connected to the fixed rod (11) and is used to cover the crops. The cutting assembly is fixedly connected to the cover (14).

6. The spraying device according to claim 5, characterized in that, The spraying device also includes a guide block (25), a fixing plate (26), a shoulder strap (27) and a pull rod (28). The first end of the pull rod (28) is connected to the fixing rod (11), and the second end of the pull rod (28) slides through the guide block (25). The guide block (25) is fixedly connected to the fixing plate (26), and the shoulder strap (27) is fixedly connected to the fixing plate (26).

7. The spraying device according to claim 6, characterized in that, The spraying device also includes a second helical spring (33) and a second fixing part (34). The second fixing part (34) is sleeved on the pull rod (28), and the second helical spring (33) is sleeved on the pull rod (28). The two ends of the second helical spring (33) abut against the guide block (25) and the second fixing part (34) respectively.

8. The spraying device according to claim 6, characterized in that, The spraying device also includes a second slider (31), which is slidably connected to the fixed rod (11) and fixedly connected to the pull rod (28).

9. The spraying device according to claim 8, characterized in that, The spraying device further includes a first locking member and a second locking member (32). The first locking member is used to lock or unlock the relative position of the second slider (31) and the fixed rod (11), and the second locking member (32) is used to lock or unlock the relative position of the guide block (25) and the pull rod (28).

Images