Washing type electrostatic spraying nozzle and agricultural plant protection machine comprising same

Abstract

The invention belongs to the field of agricultural plant protection machine nozzles, and particularly discloses a washing type electrostatic spraying nozzle and an agricultural plant protection machine comprising the same, the washing type electrostatic spraying nozzle is composed of a shell, a runner core, a middle spacer, a sealing spacer and a nozzle seat, one end of the shell is open, and the other end of the shell is closed; the open end of the shell is connected with the spray head seat, a plurality of runner cores are arranged in a space formed by the spray head seat and the shell, the adjacent runner cores are isolated through middle spacers, and a first through hole is formed in the center of each middle spacer and used for communicating the runner cores on the two sides of the middle spacer; a sealing isolation pad is arranged between the flow channel core and the spray head seat, a thin concave structure is arranged in the middle of the sealing isolation pad, and the thin concave structure is of a closed cross-shaped opening structure; and a second through hole communicated with the center of the sealing isolation pad is formed in the spray head seat. Through mutual cooperation of the runner core, the middle spacer, the sealing spacer and the nozzle base, the electrostatic spraying effect is achieved.

Description

Technical Field

[0001] The invention relates to the field of agricultural plant protection machine nozzles, and in particular to a flushing electrostatic spray nozzle and an agricultural plant protection machine comprising the nozzle. Background Art

[0002] Electrostatic spray technology is to charge the droplets after atomizing the droplets to form a group of charged droplets. Under electrostatic induction, the crop target generates heterogeneous charges, generating Coulomb force, and then performs directional movement under the combined action of electrostatic field force, gravity, viscosity and surface tension of the droplets. The electric lines formed by the charged droplets in electrostatic spray are penetrating, and the droplets are absorptive, so the droplets can not only be deposited on the surface of the target crop, but also penetrate into the interior of the target crop and deposit on the back and hidden parts of the leaves of the target crop. Compared with traditional spraying methods, because the droplet groups produced by electrostatic spraying carry the same charge, the droplets repel each other and split to form smaller droplets, making the droplets more evenly distributed on the target crop.

[0003] Conventional electrostatic spraying technology uses an electrostatic generator to connect high-voltage static electricity with liquid, and the droplets sprayed at the nozzle form an electrostatic field with the crop target. For details, please refer to CN205761896U, CN104588227A, CN105903587A, etc. This method requires the plant protection machine to borrow the direct current of the power machinery, and each nozzle must be equipped with an electrostatic generator. The structure is complex and the cost is high. The method of use is not simple enough compared to traditional sprayers, which hinders its popularization. Because the technology involves high-voltage ionization, improper operation may cause accidents such as leakage, so it has not been widely used. How to solve the safety problem of electrostatic generators and find a moderate solution between electrostatic adsorption efficiency, application cost and safety of use has become one of the important issues that this technology needs to solve. Summary of the invention

[0004] In order to solve the shortcomings of the prior art, the present invention provides a flushing electrostatic spray nozzle and an agricultural plant protection machine including the nozzle.

[0005] In order to achieve the above object, the specific solution of the present invention is: In the first aspect, the present invention discloses a flushing type electrostatic spray nozzle, which is composed of a shell, a flow channel core, a middle spacer, a sealing spacer, and a nozzle seat. The shell is open at one end and closed at the other end; the open end of the shell is connected to the nozzle seat, and a plurality of flow channel cores are arranged in the space formed by the nozzle seat and the shell, and the flow channel cores are made of a material that has generated static electricity. Adjacent flow channel cores are isolated by a middle spacer, and a circular through hole is arranged in the center of the middle spacer for connecting the flow channel cores on both sides thereof; and a sealing spacer is arranged between the flow channel core and the nozzle seat, and a thin concave structure is provided in the middle of the sealing spacer, and the thin concave structure is a closed cross opening structure; a second through hole connected to the center of the sealing spacer is arranged on the nozzle seat.

[0006] As a further technical solution, the flow channel core is a circular structure with symmetrical spiral flow channel structures on both sides. There are rectangular holes on the top side. The outer end of the spiral flow channel is a smooth surface to facilitate the formation of a sealed environment through the middle spacer and the sealing spacer. The inner surface of the flow channel is a rough surface to increase the friction between the water flow and the flow channel.

[0007] As a further technical solution, the edge of the flow channel core has a rectangular positioning notch.

[0008] As a further technical solution, a clamping protrusion that matches the rectangular positioning notch is provided on the inner wall of the shell.

[0009] As a further technical solution, the thin concave structure is made of rubber or silicone.

[0010] As a further technical solution, the middle spacer is an insulating rubber pad or a silicone sealing pad.

[0011] As a further technical solution, the lower end of the nozzle seat is a threaded round cover structure, which is threadedly connected to the shell.

[0012] As a further technical solution, the upper end of the nozzle seat is an arc-shaped tube seat with a circular boss in the middle. The circular boss is inserted into the circular hole of the plant protection machine's liquid medicine tube. There is a second through hole from the center of the circular boss to the center of the threaded round cover structure.

[0013] As a further technical solution, the arc-shaped pipe seat is connected to the fixing card through a pin shaft, and a liquid medicine pipe for a plant protection machine is installed between the arc-shaped pipe seat and the fixing card.

[0014] In a second aspect, the present invention discloses an agricultural plant protection machine, which includes the flushing electrostatic spray nozzle described above.

[0015] The beneficial effects of the present invention are as follows: The device achieves the electrostatic spray effect through the mutual cooperation between the flow channel core, the middle spacer, the sealing spacer and the nozzle seat. Specifically, the device replaces the conventional nozzle main body and is installed with the existing nozzle for use. When the spray is not started, there is no pressure in the nozzle, and the middle cross opening of the sealing spacer is naturally closed; when the sprayer opens the pipeline, the liquid in the pipeline opens the middle cross opening of the sealing spacer due to the pressure, enters the center of the uppermost flow channel core, and then flows through the spiral flow channel to the rectangular hole at the edge of the flow channel core, and then flows into the other side of the flow channel core through the rectangular hole. It reaches the center position through the spiral flow channel and flows into the center of the next layer of flow channel core through the center hole of the middle spacer. Since the plant protection machine uses a metering pump to supply medicine, when the liquid medicine passes through the narrow and rough spiral flow channel inside the flow channel core, the flow rate of the liquid medicine is increased, the length of the flow channel is extended, and the friction between the liquid medicine and the flow channel wall is increased, thereby increasing the separation effect of the charge caused by the friction between the liquid medicine and the inner wall, so that the liquid medicine carries static electricity, and flows down layer by layer. Finally, the liquid medicine flows out from the circular hole at the lower end of the outer shell and is atomized by the nozzle to form static electricity droplets, thereby achieving the electrostatic spray effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a flushing electrostatic spray nozzle of the present invention; Figure 2 is a cross-sectional view of the housing of the present invention; Figure 3 A top view of the housing of the present invention; Figure 4 It is a schematic diagram of one end face of the flow channel core of the present invention; Figure 5 for Figure 4 AA section view; Figure 6 is another end view of the flow channel core of the present invention; Figure 7 is a schematic diagram of a sealing gasket of the present invention; Figure 8 is a cross-sectional view of the sealing gasket of the present invention; Fig. 9 for Figure 8 Schematic diagram of the enlarged Z part; Fig.10 It is a side view of the nozzle seat of the present invention; Fig.11 It is an end view of the nozzle seat of the present invention; In the figure: 1. Shell, 1-1. Connecting buckle, 1-2. Snap-on protrusion, 2. Flow channel core, 2-1. Rectangular positioning notch, 2-2. Spiral flow channel, 2-3. Rectangular hole; 3. Middle spacer, 3-1. First circular through hole; 4. Sealing gasket, 4-1. Circular thin concave structure; 5. Nozzle seat, 5-1. Circular boss, 5-2. Second circular through hole, 5-3. Threaded circular cover structure, 5-4. Circular arc tube seat; 6. O-ring, 7. Pin, 8. Fixing card. DETAILED DESCRIPTION

[0017] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0018] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof; For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0019] As described in the background technology section: the existing electrostatic spray technology uses an electrostatic generator to connect high-voltage static electricity with liquid, and the spray droplets at the nozzle form an electrostatic field with the crop target. This method requires the plant protection machine to borrow the direct current of the power machinery, and each nozzle needs to be equipped with an electrostatic generator, which has a complex structure and high cost. In order to solve the above technical problems, this embodiment proposes a flushing electrostatic spray nozzle. The present invention is described in detail below in conjunction with the accompanying drawings: like Figure 1As shown, in a typical embodiment of the present invention, the flushing electrostatic spray nozzle is mainly composed of a shell 1, a flow channel core 2, a middle spacer 3, a sealing spacer 4, a nozzle seat 5, an O-ring 6, a pin 7, a fixing card 8, etc.; after the device is installed with an existing plant protection machine nozzle, an electrostatic spray effect can be achieved, wherein multiple layers of middle spacers 3 and flow channel cores 2 are installed in the shell 1, and a sealing spacer 4 is installed on the top layer of the flow channel core 2. The nozzle seat 5 is tightened on the shell 1 through a threaded connection, and the sealing spacer 4 is pressed onto the flow channel core 2. The nozzle seat 5 is connected to the plant protection machine pipeline through a pin 7 and a fixing card 8, and an O-ring 6 is installed in the nozzle seat 5. Specifically in this embodiment, four flow channel cores 2 and four middle spacers 3 are arranged in the outer shell 1, a middle spacer 3 is arranged at the bottom of the outer shell 1, a first flow channel core 2 is arranged on the top of the middle spacer 3, and then a second flow channel core 2 is arranged, and then a middle spacer 3 is arranged, and then a third flow channel core 2 is arranged, and then a middle spacer 3 is arranged, and then a fourth flow channel core 2 is arranged, and a sealing spacer 4 is arranged on the top of the fourth flow channel core 2; the nozzle seat 5, the sealing spacer 4, the flow channel core 2, and the middle spacer 3 together constitute a liquid circulation channel.

[0020] Further, such as Figure 4 , Figure 5 , Figure 6 As shown, the flow channel core 2 in this embodiment is made of polyethylene or other static electricity-generating materials. The flow channel core 2 is a circular structure as a whole, and has a rectangular positioning notch 2-1 on its edge, which cooperates with the clamping protrusion 1-2 in the shell to realize the positioning between the flow channel core 2 and the shell 1. The flow channel core 2 is a centrally symmetrical structure, and its two sides are symmetrically arranged spiral flow channels 2-2. The upper parts of the spiral flow channels 2-2 on the left and right sides are connected through a rectangular hole 2-3, that is, the liquid in the spiral flow channel 2-2 on the left can flow into the spiral flow channel 2-2 on the right through the rectangular hole 2-3 to realize the flow of liquid; further, the outer end of the spiral flow channel 2-2 is a smooth surface to facilitate the formation of a sealed environment through the middle spacer 3 and the sealing spacer 4, but the inner surface of the spiral flow channel 2-2 is a rough surface to increase the friction between the water flow and the flow channel.

[0021] The above-mentioned spiral flow channel 2-2 refers to a flow channel formed by a circle of grooves, wherein the center of the spiral flow channel 2-2 on one side is the liquid inlet, and the rectangular hole 2-3 is the liquid outlet, and the rectangular hole 2-3 is the liquid inlet on the other side, and the center of the spiral flow channel 2-2 is the liquid outlet. By designing the spiral flow channel 2-2, when the liquid medicine passes through the narrow and rough spiral flow channel 2-2 inside the flow channel core 2, the flow rate of the liquid medicine is increased, the flow channel length is extended, and the friction between the liquid medicine and the flow channel wall is increased, thereby increasing the separation effect of the electric charge caused by the friction between the liquid medicine and the inner wall, so that the liquid medicine carries static electricity, and flows down layer by layer, and finally the liquid medicine flows out from the circular hole at the lower end of the shell 1 and is atomized by the nozzle to form droplets with static electricity, thereby achieving an electrostatic spray effect.

[0022] Further, such as Figure 2 , Figure 3 As shown, the housing 1 in this embodiment is as shown in Figure 2 , Figure 3 As shown, one end of the housing 1 is open and the other end is closed. A connecting buckle 1-1 is provided at the closed end and connected to the nozzle. A through hole for liquid to flow downward is provided at the center of the connecting buckle 1-1, and the through hole is connected to the first circular through hole 3-1 of the middle spacer 3 at the bottom layer; A clamping protrusion 1 - 2 is also provided in the housing 1 , and the clamping protrusion 1 - 2 cooperates with the rectangular positioning notch 2 - 1 to achieve installation and positioning of the flow channel core 2 inside the housing 1 .

[0023] Further, such as Figure 2 , Figure 3 As shown, the intermediate spacer 3 is an insulating rubber / silicone sealing gasket with a first circular through hole 3-1 in the middle. The first circular through hole 3-1 is as shown in FIG. Figure 1 As shown, the purpose of providing the first circular through hole 3 - 1 is mainly to achieve communication between two adjacent flow channel cores 2 .

[0024] Further, such as Figure 2 , Figure 3 As shown, the sealing gasket 4 is provided with a circular thin concave structure 4-1 at the center, and the circular thin concave structure 4-1 is made of rubber or silicone with a closed cross opening, and the cross opening of the circular thin concave structure 4-1 will open and close according to the pressure of the liquid medicine.

[0025] Furthermore, the lower end of the nozzle seat 5 in this embodiment is a threaded round cover structure 5-3, which can be screwed onto the outer shell 1 to form a closed cavity together with the outer shell 1. The upper end of the nozzle seat 5 is an arc-shaped tube seat 5-4. There is a circular boss 5-1 in the middle of the arc-shaped tube seat 5-4, which can be inserted into the circular hole of the stainless steel liquid tube of the plant protection machine. There is a second circular through hole 5-2 from the center of the circular boss 5-1 to the center of the threaded round cover structure 5-3.

[0026] The working process of the present invention is as follows: The flushing electrostatic spray nozzle replaces the conventional nozzle main body and is installed with the existing nozzle for use. The principle is that when the spray is not started, there is no pressure in the liquid in the nozzle, and the middle cross opening of the sealing gasket 4 is naturally closed. When the sprayer opens the pipeline, the liquid medicine in the pipeline will break the middle cross opening of the sealing gasket 4 due to the pressure, enter the center of the uppermost flow channel core 2, and then pass through the spiral flow channel 2-2 to the rectangular hole 2-3 on the edge of the flow channel core 2, and flow into the other side of the flow channel core 2 through the rectangular hole 2-3. After reaching the center position through the spiral flow channel 2-2, it flows into the center of the next layer of flow channel core 2 through the center hole of the middle gasket 3. Since the plant protection machine adopts a metering pump to supply medicine, when the liquid medicine passes through the narrow and rough spiral flow channel 2-2 inside the flow channel core 2, the flow rate of the liquid medicine is increased, the flow channel length is extended, and the friction between the liquid medicine and the flow channel wall is increased, thereby increasing the separation effect of the electric charge caused by the friction between the liquid medicine and the inner wall, so that the liquid medicine carries static electricity, and flows down layer by layer. Finally, the liquid medicine flows out from the circular hole at the lower end of the shell 1 and is atomized by the nozzle to form droplets with static electricity, thereby achieving the electrostatic spray effect.

[0027] In addition, the present invention also provides an agricultural plant protection machine, which includes the flushing electrostatic spray nozzle described above.

[0028] Finally, it should be noted that relational terms such as first and second are merely used to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any actual relationship or order between these entities or operations.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A flushing electrostatic spray nozzle, characterized in that: It is composed of an outer shell, a flow channel core, an intermediate spacer, a sealing spacer, and a nozzle seat. One end of the outer shell is open and the other end is closed. The open end of the outer shell is connected to the nozzle seat. A plurality of flow channel cores are arranged in the space formed by the nozzle seat and the outer shell. The flow channel cores are made of a material that generates static electricity. Adjacent flow channel cores are isolated by an intermediate spacer. A first through hole is arranged in the center of the intermediate spacer for connecting the flow channel cores on both sides thereof. A sealing spacer is arranged between the flow channel core and the nozzle seat. A thin concave structure is arranged in the middle of the sealing spacer, and the thin concave structure is a closed cross opening structure. A second through hole connected to the center of the sealing spacer is arranged on the nozzle seat.

2. The flushing electrostatic spray nozzle according to claim 1, characterized in that: The flow channel core is a circular structure with symmetrical spiral flow channel structures on both sides, and the spiral flow channel structures on both sides are connected through rectangular holes. The outer end of the spiral flow channel is a smooth surface to facilitate the formation of a sealed environment through the middle spacer and the sealing spacer, and the inner surface of the flow channel is a rough surface to increase the friction between the water flow and the flow channel.

3. The flushing electrostatic spray nozzle according to claim 1, characterized in that: The edge of the flow channel core is provided with a rectangular positioning notch.

4. The flushing electrostatic spray nozzle according to claim 3, characterized in that: A clamping protrusion matched with the rectangular positioning notch is arranged on the inner wall of the shell.

5. The flushing electrostatic spray nozzle according to claim 1, characterized in that: The thin concave structure is made of rubber or silicone.

6. The flushing electrostatic spray nozzle according to claim 1, characterized in that: The middle spacer is an insulating rubber pad or a silicone sealing pad.

7. The flushing electrostatic spray nozzle according to claim 1, characterized in that: The lower end of the nozzle seat is a threaded round cover structure, which is threadedly connected to the shell.

8. The flushing electrostatic spray nozzle according to claim 7, characterized in that: The upper end of the nozzle seat is an arc-shaped pipe seat with a circular boss in the middle. The circular boss is inserted into the circular hole of the liquid medicine pipe of the plant protection machine. A second through hole is provided from the center of the circular boss to the center of the threaded round cover structure.

9. The flushing electrostatic spray nozzle according to claim 8, characterized in that: The arc-shaped pipe seat is connected with the fixing card through a pin shaft, and a liquid medicine pipe of the plant protection machine is installed between the arc-shaped pipe seat and the fixing card.

10. An agricultural plant protection machine, characterized in that: It comprises the flushing electrostatic spray nozzle described in any one of claims 1-9.

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