Novel air-assisted orchard pesticide sprayer

Abstract

The invention relates to the technical field of orchard pesticide spraying machines, and discloses a novel air-assisted orchard pesticide spraying machine which comprises a transport vehicle, and a pesticide tank is mounted on the transport vehicle. Through a sliding arc plate and a cleaning brush head structure arranged in the movable sliding plate, the inner wall of the medicine tank is automatically and continuously scraped and cleaned in the reciprocating motion process of the movable sliding plate, liquid medicine crystal attachment is effectively prevented, and it is avoided that crystal accumulation hinders operation of the movable sliding plate; therefore, the sliding arc plate is driven to generate two times of strong scraping in a single stroke by utilizing the synergistic effect of the pressure change of the cavity and the reset force of the spring when the sliding plate moves, the crystal removal efficiency is remarkably improved, an additional power source is not needed in the whole scheme, pressure energy is converted into cleaning kinetic energy through mechanical linkage, and the service life of the sliding plate is prolonged while the operation reliability of the movable sliding plate is guaranteed. The problem that crystals accumulate on the inner wall of the medicine tank is effectively solved, and equipment service life is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of orchard pesticide sprayers, in particular to a novel air-conveying orchard pesticide sprayer. Background Art

[0002] Air-assisted orchard sprayers have become the mainstream equipment for modern orchard plant protection operations due to their efficient penetration and uniform coverage of airflow-transported spray mist.

[0003] Existing pneumatic orchard sprayers typically use transport tanks mounted on transport vehicles for mobile liquid pesticide transport. They rely on a reciprocating stirring mechanism within the tank to maintain the liquid suspension and prevent sedimentation. Simultaneously, a separate piston compression mechanism hydraulically pumps the liquid to the atomizing nozzle for spraying. While this design effectively addresses the issues of initial mixing and basic liquid delivery, the liquid level within the tank continuously decreases during long-term continuous operation as the liquid is consumed. This significantly reduces the stirring effect of the stirring mechanism on the tank bottom, particularly near the bottom edge and in blind spots, where the liquid flow rate slows or even stagnates. This causes previously evenly dispersed solid pesticide particles (such as wettable powders and some water-dispersible granules) in the liquid to gradually sink due to gravity and accumulate at the tank bottom, forming a localized high-concentration sedimentation layer. As the water in this sediment evaporates or is carried away by the upper liquid layer, its concentration exceeds the solubility limit, leading to crystal precipitation. These crystals continue to accumulate at the bottom of the tank. Especially when they adhere to and grow on the inner wall of the cylinder, piston rod or sealing ring of the piston compression device, they will seriously hinder the smooth reciprocating motion of the piston, and eventually lead to seal failure or mechanism jamming failure.

[0004] Therefore, the existing demand is not met, and we have proposed a new air-conveying orchard sprayer. Summary of the Invention

[0005] The present invention provides a novel air-conveyed orchard sprayer, which automatically and continuously scrapes and cleans the inner wall of the medicine tank during the reciprocating motion of the moving slide board through the sliding arc plate and the cleaning brush head structure arranged inside the moving slide board, effectively preventing the adhesion of crystals in the medicine solution, and avoiding the accumulation of crystals that hinder the operation of the moving slide board. In addition, through the setting of the extrusion linkage mechanism, the synergistic effect of the cavity pressure change and the spring reset force during the movement of the slide board is utilized to drive the sliding arc plate to produce two strong scrapings in a single stroke, which significantly improves the crystal removal efficiency. At the same time, the mechanism performs cleaning actions in both the compression and reset stages to achieve dead-angle maintenance. The overall solution does not require an additional power source, and the pressure energy is converted into cleaning kinetic energy through mechanical linkage. While ensuring the reliability of the operation of the moving slide board, it effectively solves the problem of crystal accumulation on the inner wall of the medicine tank, extends the service life of the equipment, and solves the problems mentioned in the above background technology.

[0006] The present invention provides the following technical solution: a novel air-conveyed orchard pesticide sprayer, comprising a transport vehicle, the transport vehicle being provided with an air-conveyed assembly, and a medicine tank being hingedly mounted on the rear end of the air-conveyed assembly, the medicine tank being provided with a liquid storage chamber and a liquid outlet chamber, the top of the liquid storage chamber being provided with a liquid injection port, the medicine tank being rotatably provided with a rotating shaft, the rotating shaft penetrating the liquid storage chamber and the liquid outlet chamber, the surface of the rotating shaft being provided with a spiral track groove; A movable slide is sleeved on the rotating shaft, and the movable slide is located in the liquid storage chamber. A slider is provided on the outer surface of the movable slide, and the slider slides in cooperation with the slide groove provided on the inner wall of the medicine tank. A slider is provided inside the movable slide, and the slider is embedded in the spiral track groove on the surface of the rotating shaft. Accommodation grooves are symmetrically provided inside the movable slide, and a sliding arc plate is slidably provided in each of the accommodating grooves, and a cleaning brush head is provided on the sliding arc plate.

[0007] As an optional solution of a new air-assisted orchard sprayer described in the present invention, a plurality of communicating holes are provided between the liquid storage chamber and the liquid outlet chamber, a blocking member is provided in each of the communicating holes, and a second spring is provided between the blocking member and the inner wall of the communicating hole.

[0008] As an optional solution of the new air-conveying orchard sprayer described in the present invention, the sliding arc plate is slidably arranged in the accommodating groove through a sliding rod, and a return spring is provided between the sliding rod and the groove body of the accommodating groove.

[0009] As an optional solution of the new air-blow orchard sprayer described in the present invention, a movable slide rod is slidably provided inside the movable slide plate, and a fourth spring is provided between the movable slide rod and the movable slide plate.

[0010] As an optional solution for a new type of air-conveyed orchard sprayer described in the present invention, each of the sliding arc plates is fixedly connected to a first extrusion member, and extrusion slopes are provided on both sides of the first extrusion member. Two groups of second extrusion members are symmetrically arranged on the movable slide rod, and each group of the second extrusion members cooperates with the extrusion slopes provided on the corresponding first extrusion member.

[0011] As an optional solution of a new air-assisted orchard sprayer described in the present invention, a spiral blade is provided inside the liquid outlet chamber, the spiral blade is fixedly connected to the rotating shaft, a plurality of drainage holes are opened on the side wall of the liquid outlet chamber, and an atomizing nozzle is installed in each drainage hole.

[0012] As an optional solution of the new air-assisted orchard sprayer described in the present invention, each of the atomizing nozzles is provided with an automatic cleaning component, and the automatic cleaning component includes a thimble head, a thimble rod and a third spring.

[0013] As an optional solution of the novel air-assisted orchard sprayer described in the present invention, the ejector head is elastically connected to the inlet of the atomizing nozzle through a third spring, and an annular groove is provided on the rotating shaft.

[0014] As an optional solution of the new air-assisted orchard sprayer described in the present invention, one end of the thimble rod is hinged to the base of the thimble head, and the other end of the thimble rod is slidably embedded in the annular groove of the rotating shaft.

[0015] As an optional solution of the new air-conveyed orchard sprayer described in the present invention, a cam is fixedly arranged in the annular groove, the working contour surface of the cam is in contact with the end of the ejector rod, and a through liquid medicine groove is opened inside the ejector head.

[0016] The present invention has the following beneficial effects: 1. This new air-assisted orchard sprayer, through the partitioned design of the liquid storage chamber and the liquid discharge chamber and the reciprocating motion of the movable slide, continuously stirs the liquid medicine during the liquid transfer process, effectively preventing static sedimentation and ensuring the uniformity of the liquid medicine composition. Secondly, the movement of the movable slide during the compression stroke can automatically open the connecting hole, thereby using the piston effect to press the liquid medicine into the liquid discharge chamber, realizing efficient and controllable liquid medicine delivery.

[0017] 2. This new air-conveyed orchard sprayer uses the sliding arc plate and cleaning brush head structure set inside the moving skateboard to automatically and continuously scrape and clean the inner wall of the medicine tank during the reciprocating motion of the moving skateboard, effectively preventing the crystallization of the medicine solution from adhering and avoiding the accumulation of crystals that hinder the operation of the moving skateboard. In addition, through the setting of the extrusion linkage mechanism, the synergistic effect of the cavity pressure change and the spring reset force during the movement of the skateboard is utilized to drive the sliding arc plate to produce two strong scrapes in a single stroke, significantly improving the efficiency of crystal removal. At the same time, the mechanism performs cleaning actions in both the compression and reset stages to achieve dead-angle maintenance. The overall solution does not require an additional power source, and the pressure energy is converted into cleaning kinetic energy through mechanical linkage. While ensuring the reliability of the mobile skateboard's operation, it effectively solves the problem of crystal accumulation on the inner wall of the medicine tank and extends the service life of the equipment.

[0018] 3. This new air-conveyed orchard sprayer converts the rotational kinetic energy of the shaft into periodic stabbing actions of the thimble head through the linkage design of the cam in the rotating shaft ring groove and the thimble rod. The four-leaf cam structure is used to trigger four high-frequency stabbings in a single rotation, actively breaking up the drug residue deposits at the connection of the atomizing nozzle, thereby preventing the clogging of the atomizing nozzle to a certain extent, thereby effectively improving the continuous operation reliability and spraying uniformity of the atomizing nozzle, providing key guarantees for long-term and precise pesticide application in orchards. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the first cross-sectional structure of the topical medicine jar of the present invention; Figure 3 For the present invention Figure 2 A in the middle is an enlarged structural diagram; Figure 4 This is a schematic diagram of the second cross-sectional structure of the local medicine jar of the present invention.

[0020] Figure 5 For the present invention Figure 4 The enlarged structural diagram at B in the middle; Figure 6 It is a schematic diagram of the structure of the movable slide of the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure of a partially movable slide plate of the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the structure at point C in the middle.

[0021] In the picture: 1. Transport vehicle; 2. Medicine tank; 201. Liquid storage chamber; 202. Liquid outlet chamber; 203. Moving slide; 205. Blocking member; 206. Spiral blade; 207. Second spring; 208. Spiral track groove; 209. Rotating shaft; 211. Atomizing nozzle; 212. Ejector head; 213. Ejector rod; 214. Third spring; 215. Sliding arc plate; 216. Moving slide rod; 217. First extrusion member; 218. Second extrusion member; 219. Fourth spring; 220. Accommodating through groove; 221. Cam. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0023] For example 1, please refer to Figures 1-8When the user needs to spray pesticide in the orchard, the user first needs to inject the pesticide to be sprayed into the tank through the liquid injection port arranged at the top of the pesticide tank 2. Since the pesticide tank 2 is internally provided with a liquid storage cavity 201 and a liquid outlet cavity 202 which are distinguished from each other, and the liquid injection port is in communication with the liquid storage cavity 201, the injected pesticide can be stored in the liquid storage cavity 201. When the injection of the required pesticide is completed, the user closes the liquid injection port. At this time, since the pesticide tank 2 is fixedly installed on the transport vehicle 1, the user can drive the transport vehicle 1 to move the pesticide tank 2 carrying the pesticide to the target area of the orchard. Through this arrangement, the convenient transfer of the pesticide between the operation areas can be effectively realized, thereby providing convenience for subsequent spraying operations.

[0024] Further, since the rotating shaft rod 209 is arranged inside the pesticide tank 2, one end of the rotating shaft rod 209 is fixedly connected with the output end of the external motor. When the transport vehicle 1 is started and needs to perform related operations, the external motor can be synchronously started in a forward direction, thereby driving the rotating shaft rod 209 to rotate. Since the spiral track groove 208 is arranged on the rotating shaft rod 209, and the movable sliding plate 203 is movably sleeved on the rotating shaft rod 209, on the one hand, the sliding plate 203 is slidably connected with the sliding groove arranged on the inner wall of the pesticide tank 2 through the sliding block thereon, thereby achieving limiting; on the other hand, the movable sliding plate 203 is also slidably embedded in the spiral track groove 208 of the rotating shaft rod 209 through another sliding block. That is to say, when the external motor drives the rotating shaft rod 209 to rotate, through the interaction between the spiral track groove 208 and the sliding block, and in cooperation with the guidance and constraint of the sliding groove of the pesticide tank 2, the movable sliding plate 203 can be forced to produce corresponding displacement along the axial direction of the rotating shaft rod 209.

[0025] It should be noted that the elastic sealing ring is arranged between the right side surface of the movable sliding plate 203 and the inner wall of the pesticide tank 2, and this arrangement ensures that the pesticide does not leak into the cavity on the right side of the movable sliding plate 203, so as not to affect the subsequent movement effect. Meanwhile, it should be further noted that the movable sliding plate 203 can be injected with a certain amount of lubricating oil at the initial position of movement, which does not affect the use of the pesticide. That is to say, when the movable sliding plate 203 is reset to the initial position, the sliding block connected with the movable sliding plate 203 will be in contact with the lubricating oil, so that when the movable sliding plate 203 is compressed again, the sliding block can minimize the friction between the sliding groove arranged on the inner wall of the pesticide tank 2, thereby ensuring that the movable sliding plate 203 will not be excessively worn due to excessive friction during long-term use, so as to avoid the leakage phenomenon to a certain extent.

[0026] Since a number of communicating holes are symmetrically opened between the liquid storage chamber 201 and the liquid outlet chamber 202, a blocking member 205 is provided in each communicating hole, and a second spring 207 is provided between the blocking member 205 and the communicating hole. Under the action of the second spring 207, the blocking member 205 normally closes the communicating hole in which it is located. When the movable slide 203 moves, the movable slide 203 will compress the liquid in the cavity on the right side. When the compression force of the movable slide 203 on the liquid is greater than the elastic force of the second spring 207, the closed state of the communicating hole will be released. In addition, at this time, the compression action of the movable slide 203 allows the pressurized liquid medicine in the liquid storage chamber 201 to enter the liquid outlet chamber 202 through the opened connecting hole. At the same time, since the size of the connecting hole is smaller than that of the liquid storage chamber 201 and the liquid outlet chamber 202, each time the connection is made, a large amount of liquid medicine will flow at a faster speed than the connecting hole itself. That is to say, even if a small amount of liquid medicine remains, it will be carried away again by a large amount of liquid medicine at a faster speed during the next flow process. Therefore, the possibility of crystallization inside the connecting hole is relatively low.

[0027] Since a sensor for detecting the water level is provided inside the liquid outlet cavity 202 (not shown in the figure), a corresponding waterproof protective cover is also provided outside the sensor. This arrangement can also prevent the water level sensor from being corroded by long-term immersion in the liquid medicine. At the same time, a corresponding liquid-repellent coating (such as a fluorosilicone nanocomposite material) can also be provided on the surface of the protective cover. The characteristics of the liquid-repellent coating can prevent the liquid medicine from spreading and adhering, so as to prevent residue from forming on the surface of the protective cover after long-term use, leading to crystallization. When a certain amount of liquid medicine is injected into the liquid outlet cavity 202, the sensor will receive a corresponding signal, and then send the signal to the corresponding controller, which will drive the external motor to automatically trigger the motor to reverse. As the external motor rotates in the opposite direction, under the limiting action of the spiral track groove 208, the movable slide 203 gradually returns to its initial position. As the movable slide 203 is reset, the squeezing force on the liquid medicine in the cavity on the left side of the movable slide 203 is also released. At this time, the blocking member 205 can quickly complete the blocking of the connection by using the reset elastic force of the second spring 207. At this time, since a sufficient amount of liquid medicine has been stored in the liquid outlet cavity 202, even in the process of resetting the movable slide 203, there will be enough liquid medicine inside the liquid outlet cavity 202 to spray, and the cycle will continue.

[0028] The continuous forward and reverse rotation of the rotating shaft 209 drives the movable slide 203 to generate continuous reciprocating motion within the liquid storage chamber 201. This reciprocating motion not only continuously pushes the liquid medicine in the liquid storage chamber 201, but also effectively prevents the liquid medicine from settling due to long-term static conditions, ensuring that the liquid medicine composition is uniform. On the other hand, the reciprocating motion of the movable slide 203 exerts a piston-like compression effect on the liquid medicine in the liquid storage chamber 201, providing the basic power for subsequently pushing the liquid medicine into and out of the liquid chamber 202 and out of the medicine tank 2.

[0029] Since the spiral blade 206 is fixedly sleeved on the rotating shaft 209 in the liquid outlet chamber 202, that is, when the rotating shaft 209 rotates, the spiral blade 206 will rotate synchronously. When the liquid in the liquid storage chamber 201 enters the liquid outlet chamber 202, the spiral blade 206 that is rotating will break up the liquid entering the liquid outlet chamber 202 and further mix and transport it. Since drainage holes are provided on the side walls and the bottom of the liquid outlet chamber 202, atomizing nozzles 211 are provided in the drainage holes. It should be noted that the atomizing nozzles 211 are commonly used and existing technologies by people in this field. Users can adjust them according to their needs and will not be described in detail here. That is to say, the mixed medicine after being broken up by the spiral blades 206 The liquid is finally sprayed out of the medicine tank 2 in an atomized form through the atomizing nozzle 211 under the pushing action of the pressure and the spiral blade 206, and in conjunction with the air delivery equipment of the medicine tank 2, to achieve accurate and efficient spraying of the orchard. It should be noted that part of the air delivery equipment is fixedly installed on the left side of the medicine tank 2 and is sealed accordingly. That is to say, the liquid inside the liquid outlet cavity 202 will not flow out of the medicine tank 2 through the left connecting part. Instead, the air delivery equipment will be used to input the corresponding wind source into the liquid outlet cavity 202 to achieve the air delivery effect on the liquid. The air delivery equipment is a commonly used and existing technology in the field of air delivery equipment. Users can adjust the air delivery equipment according to actual conditions and their own needs, which will not be repeated here.

[0030] Example 2: This example is intended to solve the problem that the liquid medicine inside the medicine tank 2 may adhere to the inner wall of the medicine tank 2 and thus precipitate corresponding crystals. If these crystals accumulate together, it is likely to affect the normal movement of the moving slide 203. This example is an improvement made on the basis of Example 1. For details, please refer to Figures 1-8In order to prevent the liquid medicine inside the medicine tank 2 from adhering to the inner wall of the medicine tank 2 and thus precipitating corresponding crystals, and if these crystals accumulate together, it is very likely to affect the normal movement of the movable slide 203, this solution symmetrically opens a receiving groove 220 inside the movable slide 203, and each receiving groove 220 is symmetrically provided with a sliding arc plate 215, which is slidably arranged inside the receiving groove 220 through a sliding rod, and a return spring (not marked in the figure) is provided between the sliding rod and the groove body on the receiving groove 220 for sliding. A cleaning brush head is provided on the curved surface of each sliding arc plate 215, and the cleaning brush head is made of a material with elasticity and rich in corresponding hardness, such as carbon fiber. Fiber / polyurethane composite bristles, through this setting, it can be ensured that the cleaning brush head can clean the crystals adhered to the medicine tank 2, and will not cause wear on the inner wall of the medicine tank 2. The length of the cleaning brush head slightly extends outside the accommodating groove 220 and can be operated to maintain contact with the inner wall of the medicine tank 2. Therefore, when the movable slide 203 performs reciprocating movement on the rotating shaft 209, the sliding arc plate 215 inside it can drive the cleaning brush head to synchronously clean the inner wall of the medicine tank 2. This design can remove attachments in time in the early stage of crystal formation, effectively prevent excessive accumulation of crystals, and thus avoid hindering the smooth movement of the movable slide 203 due to crystal accumulation, thereby ensuring the reliability of the operation of the movable slide 203.

[0031] At the same time, a sealed cavity structure is formed inside the medicine tank 2 on the right side of the movable slide 203. When the movable slide 203 is driven to move to the left, the volume of the sealed cavity on the right side increases accordingly. Since the cavity is in a sealed state, a corresponding negative pressure is generated inside it. At the same time, the movement of the movable slide 203 causes the volume of the chamber on the left side containing the liquid medicine to be compressed and reduced, resulting in high pressure in the liquid medicine chamber. It should be noted that when the movable slide 203 moves to the left, the volume of the sealed cavity on the right side increases, and the gas inside it expands, resulting in a decrease in pressure (negative pressure). However, there is still a certain amount of gas medium (such as air) in the cavity, which is essentially different from "vacuum" (absolute state of no matter). The suction force generated by the negative pressure is limited by the initial gas pressure and the rate of volume change, and will not form infinite resistance. In other words, even if a corresponding negative pressure is generated on the right side of the movable slide 203, it will not affect the subsequent leftward movement of the movable slide 203 and squeeze the liquid medicine.

[0032] Since the movable slide bar 216 is slidingly arranged inside the movable slide bar 203, it should be noted that push plates are provided at both ends of the movable slide bar 216. At the same time, since the movement of the movable slide bar 203 is based on the rotation of the rotating shaft 209 controlled by the external motor, that is, when the movable slide bar 203 is in the initial moving position, the movable slide bar 203 is already in a squeezing state on its right side cavity under the control of the external motor. When the right side cavity is squeezed, the gas inside it will push the push plate provided on the right side of the movable slide bar 216 accordingly during the compression process, thereby allowing the movable slide bar 216 to move left inside the movable slide bar 203. It should be noted that the force of the movable slide bar 203 compressing the right side cavity is sufficient to overcome the elastic force of the fourth spring 219, so as to drive the movable slide bar 216 to perform the corresponding movement effect. At this time, the fourth spring 219 between the moving slide bar 216 and the moving slide plate 203 is compressed and stores energy. When the moving slide plate 203 performs the left movement, the squeezing of the moving slide plate 203 on its right side cavity is also slowly released. At the same time, since the moving slide plate 203 moves to the left, its left side cavity will generate a certain high-pressure thrust, and under the coordinated action of the restoring elastic force of the fourth spring 219, the moving slide bar 216 will gradually move to the right.

[0033] Since each sliding arc plate 215 that slides symmetrically in each receiving groove 220 is provided with a first extrusion piece 217, the first extrusion piece 217 has extrusion inclined surfaces processed on both sides. At the same time, two second extrusion pieces 218 are symmetrically fixed on the movable slide bar 216. When the movable slide bar 216 moves to the right, the second extrusion pieces 218 arranged thereon alternately contact the extrusion inclined surfaces of the first extrusion piece 217. When a single second extrusion piece 218 contacts, the first extrusion piece 217 and the sliding arc plate 215 connected thereto are driven to move by inclined surface extrusion, so that the cleaning brush head produces a strong scraping or squeezing cleaning effect on the inner wall of the medicine jar 2. Due to the alternating action of the double second extrusion pieces 218, a single stroke can produce two strong scraping or squeezing cleaning effects, thereby effectively improving the efficiency of removing crystals on the inner wall.

[0034] During the resetting process of the movable slide 203, the cavity on the right side of the movable slide 203 is pressurized, thereby pushing the movable slide rod 216. At the same time, the volume of the cavity on the left side increases to form a negative pressure, which jointly drives the movable slide rod 216 to gradually reset to the initial position. During this process, the second extrusion member 218 squeezes the inclined surface of the first extrusion member 217 again, so that the sliding arc plate 215 synchronously performs inner wall cleaning during the resetting stroke, so that the sliding arc plate 215 can also perform corresponding cleaning on the inner wall of the medicine tank 2 during the resetting process of the movable slide 203.

[0035] Example 3: This example is intended to prevent the problem of blockage caused by the deposition of drug residue at the connection between the atomizing nozzle 211 and the liquid outlet chamber 202. This example is an improvement made on the basis of Example 1. For details, please refer to Figures 1-8 In order to prevent the connection between the atomizing nozzle 211 and the liquid outlet chamber 202 from being blocked due to the deposition of drug residue, this solution provides an automatic cleaning component at each atomizing nozzle 211. The automatic cleaning component consists of a pin head 212, a pin rod 213 and a third spring 214. The pin head 212 is provided at the communication port between the atomizing nozzle 211 and the liquid outlet chamber 202. It is elastically connected to the atomizing nozzle 211 through the third spring 214. The base of the pin head 212 is hinged to one end of the pin rod 213, and the other end of the pin rod 213 is slidably embedded in the annular groove of the rotating shaft 209; a cam 221 is fixedly installed in the annular groove. It should be noted that the pin head 212 in the initial position does not contact the connection between the atomizing nozzle 211 and the liquid outlet chamber 202 under the action of the third spring 214.

[0036] Since the ejector rod 213 is in the annular groove formed by the rotating shaft 209 in the initial position and is in the action area of ​​the cam 221, that is, as the rotating shaft 209 continues to rotate, the ejector rod 213 in the action area of ​​the cam 221 will be squeezed by the contour of the cam 221, and the ejector head 212 will be driven in reverse to perform a certain degree of poking on the communication port. It should be noted that the through groove formed inside the ejector head 212 can inject the liquid medicine from the liquid outlet cavity 202 into the atomizing nozzle 211, that is, even when the ejector head 212 is poking, the liquid medicine can flow normally into the atomizing nozzle 211 through the through groove. It should be further noted that the size of the through groove formed by the ejector head 212 is larger than the size of the sediment, so the sediment will not be blocked inside the ejector head 212.

[0037] At the same time, since the cam 221 adopts a four-leaf equal-height profile (with a 90-degree phase difference in the convex angles), it can also ensure to a certain extent that when the ejector rod 213 is inside the working area of ​​the cam 221, the cam 221 completes at least four stabbing actions for each rotation, thereby effectively breaking up the sediment. Through this normalized reciprocating stabbing, the problem of blockage caused by the deposition of drug residue at the connection between the atomizing nozzle 211 and the liquid outlet chamber 202 can be avoided to a certain extent.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A new type of air-assisted orchard sprayer, comprising a transport vehicle (1), characterized in that: The transport vehicle (1) is provided with an air delivery component, and a medicine tank (2) is hingedly mounted on the rear end of the air delivery component. A liquid storage cavity (201) and a liquid outlet cavity (202) are provided inside the medicine tank (2). A liquid injection port is provided at the top of the liquid storage cavity (201). A rotating shaft (209) is rotatably provided inside the medicine tank (2). The rotating shaft (209) passes through the liquid storage cavity (201) and the liquid outlet cavity (202). A spiral track groove (208) is provided on the surface of the rotating shaft (209). A movable slide (203) is sleeved on the rotating shaft (209), and the movable slide (203) is located in the liquid storage chamber (201). A slider is provided on the outer surface of the movable slide (203), and the slider slides in cooperation with the slide groove provided on the inner wall of the medicine tank (2). A slider is provided inside the movable slide (203), and the slider is embedded in the spiral track groove (208) on the surface of the rotating shaft (209). The movable slide (203) is symmetrically provided with a receiving groove (220), and a sliding arc plate (215) is slidably provided in each of the receiving grooves (220), and a cleaning brush head is provided on the sliding arc plate (215).

2. A new air-assisted orchard sprayer according to claim 1, characterized in that: A plurality of communication holes are provided between the liquid storage cavity (201) and the liquid outlet cavity (202), a blocking member (205) is provided in each of the communication holes, and a second spring (207) is provided between the blocking member (205) and the inner wall of the communication hole.

3. A new air-assisted orchard sprayer according to claim 1, characterized in that: The sliding arc plate (215) is slidably arranged in the accommodating groove (220) via a sliding rod, and a return spring is provided between the sliding rod and the groove body of the accommodating groove (220).

4. A new air-assisted orchard sprayer according to claim 3, characterized in that: A moving slide bar (216) is slidably provided inside the moving slide plate (203), and a fourth spring (219) is provided between the moving slide bar (216) and the moving slide plate (203).

5. A new air-assisted orchard sprayer according to claim 4, characterized in that: Each of the sliding arc plates (215) is fixedly connected to a first extrusion member (217), and extrusion slopes are provided on both sides of the first extrusion member (217). Two groups of second extrusion members (218) are symmetrically provided on the movable slide rod (216), and each group of the second extrusion members (218) cooperates with the extrusion slopes provided on the corresponding first extrusion member (217).

6. A new air-assisted orchard sprayer according to claim 1, characterized in that: A spiral blade (206) is provided inside the liquid outlet cavity (202), and the spiral blade (206) is fixedly connected to the rotating shaft (209). A plurality of liquid discharge holes are provided on the side wall of the liquid outlet cavity (202), and an atomizing nozzle (211) is installed in each of the liquid discharge holes.

7. A new air-assisted orchard sprayer according to claim 6, characterized in that: Each of the atomizing nozzles (211) is provided with an automatic cleaning assembly, which comprises an ejector head (212), an ejector rod (213), and a third spring (214).

8. A new air-assisted orchard sprayer according to claim 7, characterized in that: The ejector pin (212) is elastically connected to the inlet of the atomizing nozzle (211) via a third spring (214), and a ring groove is provided on the rotating shaft (209).

9. A new air-assisted orchard sprayer according to claim 8, characterized in that: One end of the ejector rod (213) is hinged to the base of the ejector head (212), and the other end of the ejector rod (213) is slidably embedded in the annular groove of the rotating shaft (209).

10. A new air-assisted orchard sprayer according to claim 9, characterized in that: A cam (221) is fixedly arranged in the annular groove, a working contour surface of the cam (221) contacts the end of the ejector rod (213), and a through-going liquid medicine groove is provided inside the ejector head (212).

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