Spray head for spraying liquid medicine of plant protection machine and plant protection machine

Abstract

The utility model discloses a plant protection machine and a spray head for spraying liquid medicine of the plant protection machine, and particularly relates to the technical field of plant protection machines, the plant protection machine comprises a driving box, a double-shaft piece is arranged on the driving box, the double-shaft piece comprises an inner shaft pipe and an outer shaft pipe, the outer shaft pipe is rotatably connected to the driving box, the inner shaft pipe is rotatably connected in the outer shaft pipe, and the inner shaft pipe is rotatably connected in the outer shaft pipe. One end of the inner shaft tube is fixedly connected with a lower throwing disc, the outer surface of the outer shaft tube is fixedly connected with an upper throwing disc, the outer shaft tube is provided with a medicine feeding tube communicated with the inner shaft tube, the medicine feeding tube extends into the lower throwing disc, and a transmission assembly used for driving the double-shaft part to rotate is arranged in the driving box; a liquid medicine groove is formed in the other end of the inner shaft tube, a liquid continuing groove is formed in the outer surface of the inner shaft tube, and a first liquid outlet hole is formed in the inner wall of the liquid continuing groove and extends into the liquid medicine groove; the utility model solves the technical problem that the coverage rate of fog drops on the back of a leaf is influenced by the insufficient density of the fog drops of the spray head of the plant protection machine.

Description

Technical Field

[0001] The utility model relates to the technical field of plant protection machines. More specifically, the utility model relates to a nozzle for spraying liquid medicine of a plant protection machine and a plant protection machine. Background Art

[0002] With the development of technology, agricultural technology has developed very rapidly. In recent years, high-tech products have gradually replaced manual production. "Plant protection drones" have brought a lot of convenience to people, not only reducing the cost of spraying pesticides, but also saving people's time for spraying pesticides and increasing the pesticide spraying efficiency.

[0003] For example, the utility model with the patent publication number CN210815803U discloses a centrifugal nozzle for a drone. The centrifugal nozzle includes a housing, a motor arranged in the housing, a turntable rotating with the output shaft of the motor, and a nozzle tube with an outlet extending into the turntable. Side grooves are arranged around the inner side surface of the turntable. One end of the side groove is open and located at the top of the turntable, and the other end of the side groove extends towards the bottom of the side groove. The centrifugal nozzle has the advantages of simple structure, small atomized particles and uniform spraying.

[0004] When the patent is in use, although the spraying of liquid medicine realizes the advantages of small atomized particles and uniform spraying, the rotation mode of the turntable is single-directional, so that the steps of centrifugal atomization treatment are not multi-stage enough, and thus the coverage rate of the fog droplets on the back of the leaves is affected due to the insufficient density of the fine fog droplets. Summary of the Utility Model

[0005] The utility model aims to provide a technical solution to solve the technical problem that the coverage rate of the fog droplets on the back of the leaves is affected due to the insufficient density of the fine fog droplets in the nozzle of the plant protection machine in order to overcome the above-mentioned situation.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A nozzle for spraying liquid medicine of a plant protection machine, including a driving box, the driving box is fixedly connected to the bracket, a double-shaft member is arranged on the driving box, the double-shaft member includes an inner shaft tube and an outer shaft tube, the outer shaft tube is rotatably connected to the driving box, the inner shaft tube is rotatably connected inside the outer shaft tube, one end of the inner shaft tube is fixedly connected with a lower throwing disc, and the outer surface of the outer shaft tube is fixedly connected with an upper throwing disc;

[0007] A liquid supply pipe communicating with the inner shaft tube is arranged on the outer shaft tube, the liquid supply pipe extends into the lower throwing disc, and a transmission assembly for driving the double-shaft member to rotate is arranged in the driving box.

[0008] In a preferred embodiment, a liquid medicine groove is opened at the other end of the inner shaft tube, a liquid replenishing groove is opened on the outer surface of the inner shaft tube, a liquid outlet hole I is opened on the inner wall of the liquid replenishing groove, and the liquid outlet hole I extends into the liquid medicine groove.

[0009] In a preferred embodiment, a second liquid outlet hole is formed on the outer surface of the outer shaft tube, one end of the second liquid outlet hole extends into the liquid replenishing tank, and the other end of the second liquid outlet hole is fixedly connected to a medicine delivery tube.

[0010] In a preferred embodiment, a rotary joint is provided at the other end of the inner shaft tube, a liquid inlet tube is provided at one end of the rotary joint facing away from the inner shaft tube, and the liquid inlet tube is disposed through the drive box.

[0011] In a preferred embodiment, inclined grooves are formed on the inner walls of the upper centrifugal disc and the lower centrifugal disc, and the lower centrifugal disc is disposed below the inner side of the upper centrifugal disc.

[0012] In a preferred embodiment, the transmission assembly includes a drive rod, a first belt pulley, a second belt pulley, a first gear and a second gear. The drive rod is rotatably connected in the drive box, the first belt pulley and the first gear are both fixedly connected to the outer surface of the drive rod, the second belt pulley is fixedly connected to the outer surface of the inner shaft tube, the second belt pulley and the first belt pulley are connected by a belt, the second gear is fixedly connected to the outer surface of the outer shaft tube, and the second gear and the first gear are meshed.

[0013] In a preferred embodiment, a rotary motor is fixedly connected to the top of the drive box, an output end of the rotary motor passes through the drive box and is fixedly connected to one end of the drive rod, a motor cover is fixedly connected to the top of the drive box, and the motor cover is disposed outside the rotary motor.

[0014] The utility model further includes a plant protection machine, which includes a drone body, a liquid medicine tank disposed on the frame of the drone body, a bracket disposed on the arm of the drone body, and a nozzle structure disposed on the bracket. The nozzle structure is located below the rotor of the drone body, and the nozzle structure adopts the nozzle for spraying liquid medicine of the above-mentioned plant protection machine.

[0015] The technical effects and advantages of the utility model:

[0016] For the nozzle for spraying liquid medicine of the plant protection machine, by arranging the upper centrifugal disc and the lower centrifugal disc up and down, with the aim of controlling the synchronous and reverse rotation of the upper centrifugal disc and the lower centrifugal disc, the liquid medicine can be centrifugally atomized in two stages and in two directions through the lower centrifugal disc and the upper centrifugal disc in sequence. In this way, the atomization time of the liquid medicine by centrifugal collision can be increased, the droplet density can be ensured, and with the wind pressure effect of the drone body, the coverage rate of the back of the leaf can be increased. Description of the drawings

[0017] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained based on the provided drawings.

[0018] Figure 1 Schematic three-dimensional structure diagram of the nozzle for liquid medicine spraying of the plant protection machine provided in the first embodiment of the present invention;

[0019] Figure 2 For the Figure 1 of the present invention

[0020] Figure 3 Planar cross-sectional view of the double-axis member of the present invention;

[0021] Figure 4 Schematic three-dimensional structure diagram of the lower throwing disc of the present invention;

[0022] Figure 5 Schematic three-dimensional structure diagram of the plant protection machine provided in the second embodiment of the present invention.

[0023] The reference numerals are: 1, bracket; 2, drive box; 3, double-axis member; 31, inner shaft tube; 32, outer shaft tube; 4, lower throwing disc; 5, upper throwing disc; 6, drive rod; 7, pulley one; 8, pulley two; 9, gear one; 10, gear two; 11, medicine supply pipe; 12, inclined groove; 13, rotating motor; 14, motor cover; 15, rotary joint; 16, liquid inlet pipe; 17, liquid medicine tank; 18, liquid replenishing tank; 19, liquid outlet hole one; 191, liquid outlet hole two; 20, unmanned aerial vehicle body; 21, liquid medicine box. Specific Embodiments

[0024] The following specific embodiments illustrate the embodiments of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0025] Embodiment 1:

[0026] With reference to Figures 1-4, the present utility model provides a nozzle for liquid medicine spraying of a plant protection machine and a plant protection machine, including a driving box 2. A double-shaft member 3 is arranged on the driving box 2. The double-shaft member 3 includes an inner shaft tube 31 and an outer shaft tube 32. The outer shaft tube 32 is rotatably connected to the driving box 2, and the inner shaft tube 31 is rotatably connected inside the outer shaft tube 32.

[0027] The driving box 2 can provide driving support for the double-shaft member 3. The inner shaft tube 31 is arranged with a partially hollow structure and can be used for conveying liquid medicine. The outer shaft tube 32 is arranged with a fully hollow structure. The inner shaft tube 31 is rotatably connected to the outer shaft tube 32 in a sealed rotation manner, and the sealed rotation manner can be realized by mechanical seal or packing seal, so as to ensure the sealing of the liquid medicine conveyance of the inner shaft tube 31.

[0028] In this embodiment: the other end of the inner shaft tube 31 is provided with a liquid medicine tank 17, the outer surface of the inner shaft tube 31 is provided with a liquid replenishing tank 18, and a liquid outlet hole one 19 is arranged on the inner wall of the liquid replenishing tank 18, and the liquid outlet hole one 19 extends into the liquid medicine tank 17.

[0029] The liquid medicine tank 17 can provide an infusion channel for the inner shaft tube 31. Since the liquid replenishing tank 18 arranged on the inner shaft tube 31 is located inside the outer shaft tube 32, the liquid medicine in the liquid medicine tank 17 can be pre-stored in the liquid medicine tank 17 through the liquid outlet hole one 19, and the liquid medicine tank 17 can ensure the flow rate and pressure when the subsequent liquid medicine is led out.

[0030] In this embodiment: a liquid outlet hole two 191 is arranged on the outer surface of the outer shaft tube 32. One end of the liquid outlet hole two 191 extends into the liquid replenishing tank 18, and the other end of the liquid outlet hole two 191 is fixedly connected to a medicine delivery pipe 11.

[0031] The liquid outlet hole two 191 can provide an output channel for the liquid medicine tank 17, so that the medicine delivery pipe 11 can send the liquid medicine to a specified atomization treatment position. In the present utility model, the liquid outlet hole two 191, the liquid outlet hole one 19 and the medicine delivery pipe 11 can all be provided with a plurality of them.

[0032] In this embodiment: a rotary joint 15 is arranged at the other end of the inner shaft tube 31. One end of the rotary joint 15 facing away from the inner shaft tube 31 is provided with a liquid inlet pipe 16, and the liquid inlet pipe 16 is arranged through the driving box 2.

[0033] One end of the liquid inlet pipe 16 away from the rotary joint 15 can be externally connected to a liquid medicine container, so that the liquid inlet pipe 16 can conveniently introduce the spraying liquid medicine into the inner shaft tube 31. Since both the inner shaft tube 31 and the outer shaft tube 32 need to rotate, in order to ensure the stable conveyance of the liquid medicine in the rotating inner shaft tube 31, the rotary joint 15 is provided. The rotary joint 15 is a rotating mechanical seal device and can be used for conveying various media such as gas, liquid and oil, and it can play the role of conveying liquid medicine in this embodiment.

[0034] In this embodiment: One end of the inner shaft tube 31 is fixedly connected to the lower centrifugal disc 4.

[0035] The lower centrifugal disc 4 can perform centrifugal collision treatment on the incoming liquid medicine, so that the liquid medicine can form an atomized state for subsequent spraying.

[0036] In this embodiment: A medicine delivery tube 11 communicating with the inner shaft tube 31 is provided on the outer shaft tube 32, and the medicine delivery tube 11 extends into the lower centrifugal disc 4.

[0037] During use, the liquid medicine under external pressure passes through the liquid medicine tank 17, the first liquid outlet hole 19, the liquid replenishing tank 18, the second liquid outlet hole 191 and the medicine delivery tube 11 in sequence, and finally enters the lower centrifugal disc 4. The rotating lower centrifugal disc 4 is used to perform centrifugal collision on the liquid medicine, which can promote the atomization of the liquid medicine for subsequent spraying.

[0038] In this embodiment: An upper centrifugal disc 5 is fixedly connected to the outer surface of the outer shaft tube 32.

[0039] The liquid medicine centrifugally treated by the lower centrifugal disc 4 can continue to be centrifugally atomized through the rotating upper centrifugal disc 5. The two-stage atomization treatment method can ensure the density of the fine mist droplets of the liquid medicine.

[0040] In this embodiment: Oblique grooves 12 are formed on the inner walls of both the upper centrifugal disc 5 and the lower centrifugal disc 4, and the lower centrifugal disc 4 is arranged below the inner side of the upper centrifugal disc 5.

[0041] The setting of the oblique grooves 12 can be used to increase the area of centrifugal collision of the liquid medicine. Since the liquid medicine is first centrifugally collided through the oblique grooves 12 on the lower centrifugal disc 4, and then the liquid medicine is ejected from the upper oblique side of the lower centrifugal disc 4 and enters the upper centrifugal disc 5, it can continue to be centrifugally collided through the oblique grooves 12 of the upper centrifugal disc 5. And because the opening of the upper centrifugal disc 5 is arranged downward, the liquid medicine treated by two-stage centrifugation can be thrown out. With the downward wind pressure provided by the flying device, the liquid medicine can be atomized and sprayed downward evenly, ensuring the density of the fine mist droplets of the liquid medicine to improve the coverage rate of the mist droplets on the back of the leaves.

[0042] In this embodiment: A transmission assembly for driving the double-shaft member 3 to rotate is arranged in the drive box 2. The transmission assembly includes a drive rod 6, a first pulley 7, a second pulley 8, a first gear 9 and a second gear 10. The drive rod 6 is rotatably connected in the drive box 2. Both the first pulley 7 and the first gear 9 are fixedly connected to the outer surface of the drive rod 6. The second pulley 8 is fixedly connected to the outer surface of the inner shaft tube 31. The second pulley 8 and the first pulley 7 are connected by a belt. The second gear 10 is fixedly connected to the outer surface of the outer shaft tube 32. The second gear 10 and the first gear 9 are meshed and connected. A rotating motor 13 is fixedly connected to the top of the drive box 2. The output end of the rotating motor 13 passes through the drive box 2 and is fixedly connected to one end of the drive rod 6.

[0043] In use, by starting the rotary motor 13, the model of the rotary motor 13 can be B3740S, and its characteristics are: compact structure, providing sufficient torque, low-voltage DC power, high efficiency, low noise, superior stability, built-in drive controller. When the rotary motor 13 rotates, it can drive the drive rod 6 to rotate. The drive rod 6 can synchronously drive the first pulley 7 and the first gear 9 to rotate. The first pulley 7 can drive the inner shaft tube 31 on the second pulley 8 to rotate through a belt, and the first gear 9 can engage with the second gear 10 to drive the outer shaft tube 32 to rotate. In this way, the lower centrifugal disc 4 and the upper centrifugal disc 5 respectively corresponding to the inner shaft tube 31 and the outer shaft tube 32 can rotate synchronously and in opposite directions, so that the liquid medicine can be centrifugally atomized in two stages through the lower centrifugal disc 4 and the upper centrifugal disc 5 in sequence.

[0044] In this embodiment: The motor cover 14 is arranged outside the rotary motor 13.

[0045] The motor cover 14 plays a role in protecting the rotary motor 13.

[0046] Embodiment 2:

[0047] With reference to Figure 5 , the present utility model provides a plant protection machine, which includes a drone body 20, a liquid medicine tank 21 arranged on the frame of the drone body 20, a bracket 1 arranged on the arm of the drone body 20, and a nozzle structure arranged on the bracket 1. The nozzle structure is located below the rotor of the drone body 20.

[0048] In the present utility model, at least two nozzle structures are provided, and four can also be provided for use. The drone body 20 can adopt the model of DJI T60 as the flight carrier for the nozzle structure. At the same time, the wind pressure of the drone body 20 can be used to provide the spraying pressure for the liquid medicine. The bracket 1 can play a role in fixing the nozzle structure. In the present utility model, a liquid medicine pump can be arranged in the liquid medicine tank 21 as the liquid medicine pumping device, and the liquid medicine pump can be connected to the liquid inlet pipe 16 through a pipeline.

[0049] It should be noted that in this embodiment, the nozzle structure is the liquid medicine spraying nozzle of the plant protection machine in Embodiment 1. Its structure, working principle and the technical effects produced can refer to the corresponding content in Embodiment 1, and will not be described in detail here.

Claims

1. A spray head for spraying liquid medicine of a plant protection machine, comprising a drive box (2), characterized in that: The driving box (2) is provided with a double shaft member (3), the double shaft member (3) comprising an inner shaft tube (31) and an outer shaft tube (32), the outer shaft tube (32) being rotatably connected to the driving box (2), the inner shaft tube (31) being rotatably connected inside the outer shaft tube (32), one end of the inner shaft tube (31) being fixedly connected to a lower spinning disc (4), and the outer surface of the outer shaft tube (32) being fixedly connected to an upper spinning disc (5); The outer shaft tube (32) is provided with a dosing tube (11) which is in communication with the inner shaft tube (31); the dosing tube (11) extends into the lower spinning disc (4); and the drive box (2) is provided with a transmission assembly for driving the double shaft member (3) to rotate.

2. The liquid spraying nozzle of the plant protection machine according to claim 1, characterized in that: The other end of the inner shaft tube (31) is provided with a liquid medicine tank (17), the outer surface of the inner shaft tube (31) is provided with a liquid refilling tank (18), the inner wall of the liquid refilling tank (18) is provided with a liquid outlet hole (19), and the liquid outlet hole (19) extends into the liquid medicine tank (17).

3. The liquid spraying nozzle of the plant protection machine according to claim 2, characterized in that: The outer surface of the outer shaft tube (32) is provided with a second liquid outlet hole (191), one end of the second liquid outlet hole (191) extends into the liquid refilling tank (18), and the other end of the second liquid outlet hole (191) is fixedly connected to the drug delivery tube (11).

4. The liquid spraying nozzle of the plant protection machine according to claim 2, characterized in that: The other end of the inner shaft tube (31) is provided with a rotary joint (15), and the end of the rotary joint (15) facing away from the inner shaft tube (31) is provided with a liquid inlet pipe (16), and the liquid inlet pipe (16) is provided through the drive box (2).

5. The liquid spraying nozzle of the plant protection machine according to claim 1, characterized in that: The inner walls of the upper spinning tray (5) and the lower spinning tray (4) are both provided with inclined grooves (12), and the lower spinning tray (4) is arranged at a lower position inside the upper spinning tray (5).

6. The liquid spraying nozzle of the plant protection machine according to claim 1, characterized in that: The transmission assembly comprises a driving rod (6), a pulley 1 (7), a pulley 2 (8), a gear 1 (9) and a gear 2 (10); the driving rod (6) is rotatably connected in the driving box (2); the pulley 1 (7) and the gear 1 (9) are both fixedly connected to the outer surface of the driving rod (6); the pulley 2 (8) is fixedly connected to the outer surface of the inner shaft tube (31); the pulley 2 (8) and the pulley 1 (7) are connected via a belt; the gear 2 (10) is fixedly connected to the outer surface of the outer shaft tube (32); and the gear 2 (10) and the gear 1 (9) are meshingly connected.

7. The liquid spraying nozzle of the plant protection machine according to claim 6, characterized in that: A rotating motor (13) is fixedly connected to the top of the driving box (2); an output end of the rotating motor (13) passes through the driving box (2) and is fixedly connected to one end of the driving rod (6); a motor cover (14) is fixedly connected to the top of the driving box (2); and the motor cover (14) is arranged on the outside of the rotating motor (13).

8. A plant protection machine, characterized in that: The invention comprises an unmanned aerial vehicle (UAV) body (20), a liquid medicine tank (21) arranged on a frame of the UAV body (20), a bracket (1) arranged on an arm of the UAV body (20), and a nozzle structure arranged on the bracket (1), wherein the nozzle structure is located below the rotor of the UAV body (20), and is characterized in that the nozzle structure adopts a liquid medicine spraying nozzle of a plant protection machine as described in any one of claims 1 to 7.

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