Self-cleaning type spraying gun head for leaf surface blocking and controlling agent

Abstract

The utility model discloses a self-cleaning type spraying gun head for leaf surface resistance and control agents, and relates to the technical field of spraying gun heads for leaf surface resistance and control agents, the spraying gun head comprises a connecting pipe, a self-cleaning assembly is sleeved in the connecting pipe, the inner side wall of the connecting pipe is fixedly connected with a limiting ring, the side surface of the limiting ring is fixedly connected with a rubber pad, and the rubber pad is fixedly connected with the self-cleaning assembly. A spray head assembly is inserted into one end of the connecting pipe, and limiting holes are formed in the surface of the connecting pipe in an annular array mode. According to the self-cleaning type spraying gun head for the leaf surface resistance control agent, through the synergistic effect of a propeller in the self-cleaning assembly and a fluid flow guide curved surface, a connecting rod is driven to drive a cleaning pipe and a scraping piece to rotate along the inner wall of a sleeve in the spraying process, and residual agents and crystal substances can be effectively stripped through shearing force generated by clearance fit of the scraping piece and the inner wall of the sleeve; blockage is avoided, and spraying uniformity is maintained; meanwhile, a low-friction transmission structure formed by the bearing and the support reduces cleaning energy consumption, and the service life of the self-cleaning assembly is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of foliar inhibitor spray nozzles, specifically a self-cleaning foliar inhibitor spray nozzle. Background Technology

[0002] A foliar inhibitor spray nozzle is a specialized component for agricultural spraying equipment. By connecting to a pressurizing device, it sprays the foliar inhibitor in atomized form evenly onto the surface of plant leaves, ensuring efficient coverage of the leaf surface and forming an effective control barrier. This reduces environmental pollution or absorption of harmful substances, while improving application efficiency and resource utilization.

[0003] In the prior art, such as in publication number CN222129133U, an atomizing device for spraying foliar inhibitors is disclosed. It includes a pesticide tank and a base. A rotating seat is mounted on the base, and a rotary motor is located inside the base. The rotating seat has a groove containing a gear ring. The output shaft of the rotary motor has a drive wheel, which meshes with the gear ring. A mounting plate is mounted on the rotating seat, one end of which is hinged to the rotating seat. An atomizing nozzle is mounted on the mounting plate and connected to a flexible hose. A water pump mounted on the pesticide tank is connected to the flexible hose. A cylinder is mounted on the rotating seat, and its output end is fixedly connected to the mounting plate. This invention enables the atomizing nozzle to rotate in real time during spraying, increasing the spray range and evenly distributing the pesticide onto surrounding agricultural and forestry crops, ensuring effective plant protection.

[0004] Although the aforementioned patent enables rotating spraying through the rotating seat, when spraying leaf surface inhibitors, some substances adhere to the inner wall of the nozzle. The lack of a structure to self-clean this substance leads to blockage of the nozzle pipes. Furthermore, it cannot flexibly replace different specifications of atomizing nozzles according to actual needs and atomization volume, resulting in poor usability.

[0005] Therefore, this utility model provides a self-cleaning foliar inhibitor spray nozzle. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a self-cleaning foliar inhibitor spray nozzle, which solves the problem that when spraying foliar inhibitors, some substances adhere to the inner wall of the nozzle, and the lack of a structure to self-clean them causes the accumulation of deposits to clog the nozzle pipes. At the same time, it is not possible to flexibly replace different specifications of atomizing nozzles according to actual needs and atomization volume, resulting in poor flexibility of use.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a self-cleaning leaf surface inhibitor spray gun head, including a connecting tube, a self-cleaning component is sleeved inside the connecting tube, a limiting ring is fixedly connected to the inner side wall of the connecting tube, a rubber pad is fixedly connected to the side of the limiting ring, a spray head assembly is inserted into the inside of one end of the connecting tube, and limiting holes are formed in a ring array on the surface of the connecting tube.

[0008] The self-cleaning component includes a sleeve fixedly connected to the inner wall of the connecting tube. A bracket is fixedly connected to the inside of one end of the sleeve. A bearing is fixedly connected to the side of the bracket. A connecting rod is sleeved inside the bearing. A propeller is fixedly connected to one end of the connecting rod. A mounting plate is fixedly connected to one end of the propeller. A cleaning tube is fixedly connected to the surface of the mounting plate. Scrapers that fit against the inner wall of the sleeve are fixedly connected to the surface of the cleaning tube in a ring array.

[0009] The nozzle assembly includes an atomizing nozzle sleeved on one end of a connecting pipe. The surface of the atomizing nozzle has a ring array of holes. A spring is sleeved inside the holes, and one end of the spring is fixedly connected to a locking bead.

[0010] Preferably, the cleaning tube has a hollow cylindrical structure, and the scraper on the surface of the cleaning tube forms a clearance fit with the inner wall of the sleeve.

[0011] Preferably, the atomizing nozzle forms a locking structure with the limiting hole at the end of the connecting tube through the locking bead, and the spring deforms when the locking bead is compressed.

[0012] Preferably, the limiting holes are equidistantly distributed along the circumferential direction of the end of the connecting pipe, and the diameter of the limiting holes forms a transition fit with the diameter of the locking bead.

[0013] Preferably, the annular inner and outer diameters of the rubber pad match the inner and outer diameters of the atomizing nozzle, and the axial thickness of the rubber pad is greater than the wall thickness of the limiting ring.

[0014] Preferably, the propeller and the connecting rod are integrally cast, and the surface of the propeller blades is provided with a fluid guiding surface.

[0015] Beneficial effects

[0016] This invention provides a self-cleaning foliar inhibitor spray nozzle. Compared with the prior art, it has the following advantages:

[0017] 1. This self-cleaning leaf surface control agent spray nozzle, through the synergistic effect of the propeller and fluid guide surface in the self-cleaning component, drives the connecting rod to rotate the cleaning tube and scraper along the inner wall of the sleeve during the spraying process. The shearing force generated by the gap fit between the scraper and the inner wall of the sleeve can effectively peel off residual agents and crystals, avoid clogging and maintain spray uniformity; at the same time, the low-friction transmission structure composed of bearings and brackets reduces cleaning energy consumption and extends the service life of the self-cleaning component.

[0018] 2. This self-cleaning leaf surface control agent spray nozzle utilizes the elastic deformation design of the spring and locking bead in the nozzle assembly, combined with the limiting holes distributed in a ring array at the end of the connecting tube, to achieve quick engagement and disengagement of the atomizing nozzle and the connecting tube. After the user presses the locking bead to compress and deform the spring, different specifications of atomizing nozzles can be freely replaced. Furthermore, the inner and outer diameters of the rubber pad match the atomizing nozzle to ensure sealing and prevent agent leakage. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the overall appearance of this utility model;

[0020] Figure 2 This is a three-dimensional appearance diagram of the self-cleaning component of this utility model;

[0021] Figure 3 This is a three-dimensional appearance diagram of the nozzle assembly of this utility model;

[0022] Figure 4 This is a three-dimensional diagram showing the disassembled appearance of this utility model.

[0023] In the diagram: 1. Connecting pipe; 2. Self-cleaning component; 21. Sleeve; 22. Bracket; 23. Bearing; 24. Connecting rod; 25. Propeller; 26. Mounting plate; 27. Cleaning pipe; 28. Scraper; 3. Limiting ring; 4. Rubber pad; 5. Nozzle assembly; 51. Atomizing nozzle; 52. Spring; 53. Snap-on bead; 6. Limiting hole. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides two technical solutions:

[0026] Figures 1-4The first embodiment is shown: a self-cleaning leaf surface control agent spray nozzle, including a connecting tube 1, a self-cleaning component 2 sleeved inside the connecting tube 1, a limiting ring 3 fixedly connected to the inner side wall of the connecting tube 1, a rubber pad 4 fixedly connected to the side of the limiting ring 3, a nozzle assembly 5 inserted into one end of the connecting tube 1, and limiting holes 6 arranged in a ring array on the surface of the connecting tube 1; the self-cleaning component 2 includes a sleeve 21 fixedly connected to the inner wall of the connecting tube 1, a bracket 22 fixedly connected to one end of the sleeve 21, a bearing 23 fixedly connected to the side of the bracket 22, a connecting rod 24 sleeved inside the bearing 23, a propeller 25 fixedly connected to one end of the connecting rod 24, a mounting plate 26 fixedly connected to one end of the propeller 25, a cleaning tube 27 fixedly connected to the surface of the mounting plate 26, and scrapers 28 that fit against the inner wall of the sleeve 21 fixedly connected to the surface of the cleaning tube 27 in a ring array.

[0027] Specifically, when the leaf surface control agent is delivered to the inside of the connecting pipe 1 through the pressurization device, the liquid flows through the fluid guide surface of the propeller 25, generating thrust to drive the propeller 25 to rotate. This drives the mounting plate 26 and the cleaning pipe 27 to rotate synchronously through the connecting rod 24. At this time, the scraper 28 fixed on the surface of the cleaning pipe 27 is in clearance fit with the inner wall of the sleeve 21, so that the scraper 28 continuously scrapes the residual agent or particles attached to the inner wall of the sleeve 21. The low-resistance rotational support structure formed by the bearing 23 and the bracket 22 maintains the smooth rotation of the cleaning pipe 27, thereby realizing the self-cleaning function during the spraying process, preventing pipe blockage and ensuring the uniformity of agent atomization.

[0028] In this embodiment, the nozzle assembly 5 includes an atomizing nozzle 51 sleeved on one end of the connecting pipe 1. The surface of the atomizing nozzle 51 is provided with a ring array of sleeve holes. A spring 52 is sleeved inside the sleeve holes. One end of the spring 52 is fixedly connected to a locking bead 53.

[0029] Specifically, when it is necessary to replace the atomizing nozzle 51, the operator presses the locking bead 53 on the surface of the atomizing nozzle 51, forcing the spring 52 to compress and deform. The locking bead 53 disengages from the limiting hole 6 at the end of the connecting tube 1, and the original atomizing nozzle 51 can be pulled out from the end of the connecting tube 1. After inserting the new atomizing nozzle 51 into the end of the connecting tube 1, the locking bead 53 is released, and the spring 52 returns to its original position, pushing the locking bead 53 into the corresponding limiting hole 6 to complete the fixation. At the same time, the rubber pad 4 is tightly fitted with the outer wall of the atomizing nozzle 51 to form a seal, ensuring that there is no leakage after replacement and that the spray angle and flow rate are adapted to the actual application requirements.

[0030] Figures 1-4 The second embodiment is shown, and the main difference from the first embodiment is that the inner and outer diameters of the rubber pad 4 are matched with the inner and outer diameters of the atomizing nozzle 51, and the axial thickness of the rubber pad 4 is greater than the wall thickness of the limiting ring 3.

[0031] Specifically, when assembling the atomizing nozzle 51 and the connecting pipe 1, the rubber pad 4, through the precise matching of its inner and outer diameters with the outer wall of the atomizing nozzle 51 and the inner wall of the connecting pipe 1, is subjected to axial compression after the atomizing nozzle 51 is inserted. Utilizing the characteristic that its axial thickness is greater than the wall thickness of the limiting ring 3, the rubber pad 4 undergoes elastic deformation and tightly fills the gap between the atomizing nozzle 51 and the limiting ring 3, forming a double sealing effect. This not only prevents the agent from leaking from the connection, but also absorbs the vibration of the nozzle during operation through the rubber material, reducing component wear and extending the service life of the nozzle assembly 5.

[0032] The propeller 25 and the connecting rod 24 adopt an integrated casting structure, and the surface of the propeller blade of the propeller 25 is provided with a fluid guiding surface;

[0033] Specifically, the propeller 25 and the connecting rod 24 are manufactured using an integrated casting process, eliminating the assembly gaps of traditional split structures and ensuring the stability of power transmission and structural strength. The fluid guide surface on the blade surface of the propeller 25 optimizes the fluid direction when the liquid flows through it, increasing the rotational driving force of the propeller 25, thereby increasing the rotational speed of the cleaning pipe 27 and the scraper 28, enhancing the scraping efficiency of residues on the inner wall of the sleeve 21, while reducing fluid resistance and energy loss, achieving a balance between efficient self-cleaning and low power consumption operation.

[0034] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0035] Working principle: When the leaf surface control agent is input into the connecting pipe 1 through the pressurization device, the liquid flows through the propeller 25 of the self-cleaning component 2. The fluid guide surface on the surface of the propeller blade guides the fluid to generate a rotational driving force, which drives the connecting rod 24 and the mounting plate 26 to rotate synchronously. This causes the scraper 28 fixed on the surface of the cleaning pipe 27 to rotate along the gap of the inner wall of the sleeve 21, continuously scraping away residual agent and impurities. At the same time, the low-friction transmission structure formed by the bearing 23 and the bracket 22 ensures the smooth operation of the cleaning pipe 27, realizing automatic cleaning during the spraying process, preventing blockage and maintaining spray uniformity. The atomizing nozzle 51 is quickly engaged and disengaged through the transition fit between the locking bead 53 and the limiting hole 6 at the end of the connecting pipe 1, under the deformation of the spring 52. This facilitates the replacement of nozzles of different specifications. The rubber pad 4 uses its inner and outer diameters to match the size of the atomizing nozzle 51 and the limiting ring 3, forming a seal through elastic deformation to prevent agent leakage and reduce vibration wear. Ultimately, it achieves the dual functions of efficient application and flexible adaptation.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-cleaning foliar inhibitor spray nozzle, comprising a connecting tube (1), characterized in that: The connecting pipe (1) is fitted with a self-cleaning component (2), and a limiting ring (3) is fixedly connected to the inner side wall of the connecting pipe (1). A rubber pad (4) is fixedly connected to the side of the limiting ring (3). A nozzle assembly (5) is inserted into the inside of one end of the connecting pipe (1). Limiting holes (6) are opened in a ring array on the surface of the connecting pipe (1). The self-cleaning component (2) includes a sleeve (21) fixedly connected to the inner wall of the connecting tube (1). A bracket (22) is fixedly connected to the inside of one end of the sleeve (21). A bearing (23) is fixedly connected to the side of the bracket (22). A connecting rod (24) is sleeved inside the bearing (23). A propeller (25) is fixedly connected to one end of the connecting rod (24). A mounting plate (26) is fixedly connected to one end of the propeller (25). A cleaning tube (27) is fixedly connected to the surface of the mounting plate (26). A scraper (28) that fits against the inner wall of the sleeve (21) is fixedly connected to the surface of the cleaning tube (27) in a ring array. The nozzle assembly (5) includes an atomizing nozzle (51) sleeved on one end of the connecting pipe (1). The surface of the atomizing nozzle (51) is provided with a ring array of sleeve holes. A spring (52) is sleeved inside the sleeve holes. One end of the spring (52) is fixedly connected to a locking bead (53).

2. The self-cleaning foliar inhibitor spray nozzle according to claim 1, characterized in that: The cleaning tube (27) has a hollow cylindrical structure, and the scraper (28) on the surface of the cleaning tube (27) forms a clearance fit with the inner wall of the sleeve (21).

3. The self-cleaning foliar inhibitor spray nozzle according to claim 1, characterized in that: The atomizing nozzle (51) forms a snap-fit ​​structure with the limiting hole (6) at the end of the connecting tube (1) through the snap-fit ​​bead (53), and the spring (52) deforms when the snap-fit ​​bead (53) is pressed.

4. The self-cleaning foliar inhibitor spray nozzle according to claim 1, characterized in that: The limiting holes (6) are equidistantly distributed along the circumferential direction of the end of the connecting pipe (1), and the diameter of the limiting holes (6) forms a transition fit with the diameter of the card (53).

5. The self-cleaning foliar inhibitor spray nozzle according to claim 1, characterized in that: The inner and outer diameters of the rubber pad (4) match the inner and outer diameters of the atomizing nozzle (51), and the axial thickness of the rubber pad (4) is greater than the wall thickness of the limiting ring (3).

6. The self-cleaning foliar inhibitor spray nozzle according to claim 1, characterized in that: The propeller (25) and the connecting rod (24) adopt an integrated casting structure, and the blade surface of the propeller (25) is provided with a fluid guiding surface.

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