Hydraulic centrifugal progressive atomizing nozzle

Abstract

The utility model discloses a hydraulic centrifugal progressive atomizing nozzle, relates to the technical field of plant protection atomizing nozzles, and solves the problem that the atomizing pesticide application of a centrifugal nozzle in the prior art is difficult to meet the requirement of high-flow atomization. The centrifugal pump comprises a shell, one end of the shell is fixedly connected with a hydraulic spray head assembly, the hydraulic spray head assembly is connected with a liquid supply unit, a driving unit is arranged in the shell, the output end of the driving unit is connected with a transmission mechanism, and the transmission mechanism penetrates through the hydraulic spray head assembly to be connected with a centrifugal assembly. And the spraying end of the hydraulic nozzle assembly is matched with the centrifugal assembly. By means of the two-stage atomization mode, the defect that the requirement for large-flow atomization is difficult to meet by only adopting hydraulic atomization and centrifugal atomization is effectively overcome, the secondary centrifugal structure is used for centrifuging liquid medicine atomized and sprayed through the first-stage atomization and spraying structure, the atomization range is widened, and liquid medicine spraying in a large-flow and large-range scene is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plant protection atomization nozzle, especially to a liquid centrifugal progressive atomization nozzle. BACKGROUND

[0002] The unmanned aerial vehicle liquid medicine mechanical atomization scheme currently falls into the following two categories: 1: the high-pressure liquid medicine pumped out is introduced into a low-speed airflow through a liquid force nozzle with a narrow outlet, thereby realizing atomization. 2: the liquid is supplied to the center of a high-speed rotating member driven by electricity or gas, and the liquid is thrown out to the periphery of the rotating member or a hole, thereby generating an atomization effect by means of centrifugal force and pneumatic force.

[0003] The plant protection unmanned aerial vehicle on the market has the problems of lack of special high-efficiency atomization components, low effective deposition rate of target liquid, and uneven atomization control. The traditional liquid force atomization method is limited by conditions such as material, nozzle structure, and pressure pump under high-pressure working conditions, and cannot meet the demand for large-flow atomization uniformity to some extent. The traditional centrifugal atomization method mainly relies on increasing the rotating speed of the rotating disc to realize liquid medicine atomization, but the rotating speed of the rotating disc is limited by the material of the rotating disc, rotating balance, and the performance of the motor system, has an upper limit of safe rotating speed, and is difficult to meet the demand for large flow and uniform atomization in the future.

[0004] In addition, the spraying atomization of the plant protection unmanned aerial vehicle is affected by multiple factors such as downward airflow, atomizer structure, and liquid medicine physicochemical properties, and the existing spraying atomization research mainly adopts single-factor control variable research, such as adjusting the droplet size by rotating speed of the rotating disc, without considering the influence of comprehensive factors such as liquid medicine physicochemical properties and nozzle pneumatic layout, resulting in unclear spraying droplet motion law and high drift risk.

[0005] A Chinese invention patent with publication number CN105642457A discloses a multi-layer centrifugal atomization nozzle for manned aircraft plant protection pesticide application, which comprises a motor, a liquid spraying pipe, and one or more centrifugal atomization discs. The motor shaft is a hollow structure. Each centrifugal atomization disc is arranged from top to bottom and is driven to rotate by the motor. The centrifugal atomization disc is a concave disc structure, the outer surface of the disc is formed with a groove, the bottom of the disc is a flat structure, one end of the liquid spraying pipe is connected to the liquid pipe joint through a liquid supply pipeline, the other end of the liquid spraying pipe is arranged in the motor shaft through the motor main body, and a plurality of liquid spraying holes are arranged on the liquid spraying pipe. The liquid spraying holes are arranged between the centrifugal atomization discs. A controller is connected to the motor to control the rotating speed of the centrifugal atomization disc.

[0006] In this scheme, the essence is still to spray liquid medicine on the centrifugal atomization disc, and to realize centrifugal atomization by controlling the rotating speed of the centrifugal atomization disc. Since the rotating speed of the centrifugal atomization disc is limited, it is difficult to meet the use requirements of large-flow and large-range uniform atomization application scenarios. UTILITY MODEL CONTENTS

[0007] The utility model provides a liquid force centrifugal progressive type atomization spray head, solved the atomization of the centrifugal spray head in prior art and the problem that the application of big flow atomization cannot be satisfied.

[0008] The technical scheme of the utility model is as follows: a liquid force centrifugal progressive type atomization spray head, including the casing, the casing one end fixedly connected with liquid force spray head subassembly, liquid force spray head subassembly is connected with the liquid supply unit, be equipped with the drive unit in the casing, the output of drive unit is connected with transmission mechanism, transmission mechanism passes through liquid force spray head subassembly and is connected with centrifugal component, and the spray end of liquid force spray head subassembly is cooperated with centrifugal component and is arranged.

[0009] Preferably, the casing includes a bottom shell connected to the liquid force spray head subassembly, the bottom shell is connected to a middle shell and a top cover in sequence, and the top cover is provided with a through hole.

[0010] Preferably, the bottom shell includes a pair of symmetrically arranged half shells, the two half shells are bolted, the upper end of the half shell is connected to the middle shell and the top cover by a socket connection, and the lower end of the half shell is provided with a semi-annular clamping part for cooperating with the liquid force spray head subassembly; the top cover is provided with a connecting hole.

[0011] Preferably, the drive unit is a drive motor, and the casing is provided with a bearing plate for fixing the drive motor, and the bearing plate is provided with a through hole for the output shaft of the drive motor to pass through.

[0012] Preferably, the transmission mechanism includes a transmission shaft, one end of the transmission shaft is connected to the output shaft of the drive motor through a shaft coupling, and the other end of the transmission shaft is cooperated with the centrifugal component.

[0013] Preferably, the centrifugal component includes a centrifugal disc, a plurality of centrifugal columns are circumferentially arranged on the centrifugal disc, and the centrifugal columns are perpendicular to the disc surface of the centrifugal disc.

[0014] Preferably, the centrifugal disc is provided with a clamping groove at the axis, and a cap is connected to the end of the transmission shaft and is clamped with the clamping groove.

[0015] Preferably, the liquid force spray head subassembly includes an annular liquid storage bin, a plurality of liquid force sprayers are circumferentially arranged on the outer wall of the annular liquid storage bin, a liquid inlet pipe is arranged on the annular liquid storage bin, and the liquid inlet pipe is connected to the liquid supply unit.

[0016] Preferably, an inner tangent ring is arranged at the inner ring surface of the annular liquid storage bin and is cooperatively connected to the casing. The liquid supply unit includes a liquid pump in communication with the liquid inlet pipe, and the liquid pump is connected to a liquid tank.

[0017] The utility model has the advantages of:

[0018] The utility model discloses a liquid force centrifugal progressive type atomization spray head, solved the atomization of the centrifugal spray head in prior art and the problem that the application of big flow atomization cannot be satisfied.By setting the shell, it can be used as a nozzle external protection and support structure foundation, by setting the liquid force nozzle assembly, it can be combined with the liquid supply unit to form a first stage atomization spraying structure, realizing the preliminary atomization spraying of the liquid medicine; by setting the driving unit, the centrifugal assembly can be driven to rotate relative to the shell through the transmission mechanism, thereby forming a secondary centrifugal structure, and the liquid medicine atomized and sprayed by the first stage atomization spraying structure is centrifuged by the secondary centrifugal structure, the atomization range is increased, and the liquid medicine spraying in a large flow and a large range is met. The utility model discloses a two-stage atomization mode, which effectively avoids the shortcomings that the liquid force atomization and the centrifugal atomization cannot meet the large flow atomization needs, can realize uniform atomization of the large flow liquid medicine, and can realize controllable adjustment of the droplet size. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model, the drawings needed in the embodiment description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0020] Figure 1 It is an external structure schematic diagram of the utility model;

[0021] Figure 2 It is a cross-sectional structure schematic diagram of the utility model;

[0022] Figure 3 It is a clamping groove structure schematic diagram of the utility model;

[0023] Figure 4 It is a cap structure schematic diagram of the utility model;

[0024] Figure 5 It is a clamping groove cap cooperation structure schematic diagram of the utility model;

[0025] In the drawing: 1: shell, 2: liquid force nozzle assembly, 3: driving unit, 4: centrifugal assembly, 11: bottom shell, 12: middle shell, 13: top cover, 14: through hole, 15: half ring clamping part, 16: bearing plate, 51: transmission shaft, 52: coupling, 41: centrifugal disc, 42: centrifugal column, 411: clamping groove, 412: cap, 21: annular liquid storage bin, 22: liquid force nozzle, 23: liquid inlet pipe, 24: inner ring, 413: clamping block. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0027] As shown in Figure 1 , As shown in 2 Embodiment 1, a liquid centrifugal progressive atomizing nozzle, comprising a shell 1, the shell can be used as a nozzle external protection and support structure foundation, convenient and unmanned aerial vehicle connection fixed. The shell 1 one end is fixedly connected with liquid spray head assembly 2, liquid spray head assembly 2 is connected with liquid supply unit, liquid spray head assembly can be combined with liquid supply unit to form the first stage atomizing spray structure, realize the preliminary atomizing spray of liquid medicine. The shell 1 is equipped with driving unit 3, the output end of driving unit 3 is connected with transmission mechanism, transmission mechanism passes through liquid spray head assembly 2 and is connected with centrifugal component 4, the spray end of liquid spray head assembly 2 is matched with centrifugal component 4. By setting driving unit, centrifugal component can be driven by transmission mechanism relative to the shell rotation, thereby forming secondary centrifugal structure, using secondary centrifugal structure to centrifugalize the liquid medicine atomized by the first stage atomizing spray structure, increase the atomization range, meet the liquid spraying under the large flow, large range scene.

[0028] The embodiment combines liquid spray head and centrifugal nozzle into one, through liquid spray head assembly 2, the liquid medicine supplied by liquid supply unit is sprayed out for the first time, reduces the atomization pressure demand of the first spray under the large flow scene, then centrifugal component 4 carries out secondary atomization to the liquid medicine sprayed out after the first atomization, in the form of two-stage atomization, effectively avoids the shortcomings that pure liquid atomization and centrifugal atomization are difficult to meet the large flow atomization needs, can realize uniform atomization to the large flow liquid medicine passing.

[0029] Embodiment 2, on the basis of embodiment 1, the shell 1 includes the bottom shell 11 connected with liquid spray head assembly 2, the bottom shell 11 is connected with middle shell 12, top cover 13 in turn, the top cover 13 is equipped with the hole 14. Setting the hole, can meet the wire harness of the power supply and control of driving unit, at the same time, it is also beneficial to maintain air pressure balance when the internal driving unit works in the spraying process. The top cover 13 is provided with a connecting hole, which is convenient for connecting with the mobile device of unmanned aerial vehicle by threading bolts in the connecting hole.

[0030] As a further real-time way, the bottom shell 11 includes a pair of symmetrically arranged half shells, the two half shells are bolted, the upper end of the half shell is connected with the middle shell 12, the middle shell 12 is connected with the top cover 13, and is locked by bolts, which is convenient for assembly and connection, and the structure support is more reliable.

[0031] In this embodiment, the drive unit is fixed inside the middle shell. During installation, the drive unit is first connected to the middle shell, and the drive unit's wiring harness is threaded through the through hole. Then, using a socket-fit connection structure, the upper cover and the middle shell are connected and secured with screws or bolts arranged circumferentially. Finally, after connecting the output end of the drive unit to the transmission mechanism, the two half-shells are fastened together to achieve a socket connection between the plate half-shell and the middle shell, and locked with bolts or screws. Simultaneously, the lower ends of the two half-shells are connected to the hydraulic nozzle assembly 2.

[0032] In Example 3, based on Example 2, the drive unit 3 is a drive motor. The housing 1 is provided with a support plate 16 for fixing the drive motor. In this example, the support plate is fixedly installed at the lower end of the middle shell. The drive motor is connected to the support plate by bolts. The support plate 16 is provided with a through hole that allows the output shaft of the drive motor to pass through.

[0033] In addition, the transmission mechanism includes a transmission shaft 51, one end of which is connected to the output shaft of the drive motor via a coupling 52, and the other end of which is connected to the centrifugal assembly 4. The transmission shaft passes through the hydraulic nozzle assembly and connects to the centrifugal assembly located below the hydraulic nozzle assembly. When the drive motor rotates, the transmission through the transmission shaft synchronously drives the centrifugal assembly to rotate.

[0034] In Example 4, based on Example 3, the centrifugal assembly 4 includes a centrifugal disc 41, and the centrifugal disc 41 is circumferentially provided with a plurality of centrifugal columns 42. In this example, the centrifugal columns 42 are all arranged perpendicular to the surface of the centrifugal disc 41, and the distance from the axis of the centrifugal column to the axis of the centrifugal disc is the same.

[0035] In addition, such as Figure 3 , 4 As shown in Figure 5, a slot 411 is provided at the axis of the centrifugal disc 41, and a cap 412 is connected to the end of the drive shaft 51. The cap 412 engages with the slot 411. Specifically, in this embodiment, a through hole is provided at the axis of the centrifugal disc, the slot is provided on the wall of the through hole, and the cap is pinned or welded to the lower end of the drive shaft, passing through the through hole. At the same time, the cap engages with the slot on the wall of the through hole. When the drive shaft rotates, it can synchronously drive the centrifugal disc to rotate with the cooperation of the cap and the slot.

[0036] As a further embodiment, the lower end of the drive shaft extends through the nut, and a clamping block 413 is provided at the end. The clamping block protrudes out of the centrifugal disc as a whole. When disassembling and installing, the drive shaft can be clamped and fixed by clamping to prevent it from rotating, and the nut and the slot can be separated by rotating the centrifugal disc in the opposite direction to achieve disassembly.

[0037] In the embodiment 5, on the basis of the embodiment 4, the liquid jet head assembly 2 comprises a ring-shaped liquid storage bin 21, the transmission shaft is arranged at the axis of the ring-shaped liquid storage bin, the outer wall of the ring-shaped liquid storage bin 21 is provided with a plurality of liquid jet heads 22 distributed in the circumferential direction, the jet direction of the liquid jet heads is radial jet, the ring-shaped liquid storage bin 21 is provided with a liquid inlet pipe 23, and the liquid inlet pipe 23 is connected with the liquid supply unit. When the liquid supply unit supplies liquid, the liquid fills the ring-shaped liquid storage bin to generate pressure and is sprayed out through the plurality of liquid jet heads on the side wall of the ring-shaped liquid storage bin.

[0038] As a further embodiment, an inscribed ring 24 is arranged at the inner ring surface of the ring-shaped liquid storage bin 21, and the inscribed ring 24 is connected with the shell 1 in a matched mode. The lower end of the half shell is provided with a semi-annular clamping portion 15, and the outer wall of the inscribed ring 24 is provided with an annular groove matched with the semi-annular clamping portion. When the two half shells are buckled, the two semi-annular clamping portions are buckled on the annular groove to form the connection of the inscribed ring. Further, the ring-shaped liquid storage bin can realize a certain degree of relative movement or rotation under the matched connection of the annular groove and the semi-annular clamping portion, so as to adaptively adjust the posture of the ring-shaped liquid storage bin or the orientation of the liquid inlet pipe.

[0039] As a further optional embodiment, a plurality of annular grooves can be arranged in the circumferential direction, and the axial distance between the centrifugal disc and the ring-shaped liquid storage bin is changed by matching the semi-annular clamping portion with different annular grooves. When the axial distance between the two is changed, the distance between the coupling of the transmission shaft and the output shaft of the motor can also be adjusted, and meanwhile, the length of the upper end of the half shell and the length of the socket part of the middle shell should meet the adjustment requirements. To match the requirements, a plurality of optional bolt holes that meet the corresponding connection are arranged at the connection part of the half shell and the middle shell, so as to improve the adaptability.

[0040] As a further specific embodiment, the liquid supply unit comprises a liquid pump in communication with the liquid inlet pipe 23, and the liquid pump is connected with the liquid bin. The liquid pump can pump the liquid in the liquid bin to the liquid inlet pipe and into the ring-shaped liquid storage bin, and then sprayed out through the plurality of liquid jet heads 22. After being pumped to the liquid jet heads, the liquid is first atomized, the droplets are sprayed to the centrifugal column of the centrifugal disc, and then the droplets are atomized again under the centrifugal force of the high-speed rotating centrifugal disc. In this way, the atomized liquid can realize the uniform atomization of the large-flow liquid.

[0041] As a further optional embodiment, in the embodiment, the controllable adjustment of the droplet size can be realized by comprehensively adjusting the liquid flow control, the jet head aperture adjustment and the centrifugal disc rotating speed, which is suitable for multi-rotor unmanned aerial vehicles. The controllable droplet size range is 30 μm to 500 μm, and the droplet size spectrum width is less than or equal to 1.0. The problem of high energy consumption under large-flow centrifugal atomization is solved, and the fine atomization of the liquid is realized.

[0042] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A hydraulic centrifugal progressive atomizing nozzle, characterized in that: Includes a housing (1), one end of which is fixedly connected to a hydraulic nozzle assembly (2), which is connected to a liquid supply unit. A drive unit (3) is provided inside the housing (1), the output end of which is connected to a transmission mechanism. The transmission mechanism passes through the hydraulic nozzle assembly (2) and is connected to a centrifugal assembly (4). The spray end of the hydraulic nozzle assembly (2) is configured to cooperate with the centrifugal assembly (4).

2. The hydraulic centrifugal progressive atomizing nozzle according to claim 1, characterized in that: The housing (1) includes a bottom shell (11) connected to the hydraulic nozzle assembly (2), the bottom shell (11) being connected in sequence to the middle shell (12) and the top cover (13), and the top cover (13) having a through hole (14).

3. The hydraulic centrifugal progressive atomizing nozzle according to claim 2, characterized in that: The bottom shell (11) includes a pair of symmetrically arranged half shells, which are bolted together. The upper end of the half shell is connected to the middle shell (12), and the middle shell (12) is connected to the top cover (13) by a socket and locked by bolts. The lower end of the half shell is provided with a semi-annular locking part (15) for cooperating with the hydraulic nozzle assembly (2). The top cover (13) is provided with a connecting hole.

4. The hydraulic centrifugal progressive atomizing nozzle according to any one of claims 1 to 3, characterized in that: The drive unit (3) is a drive motor. The housing (1) is provided with a support plate (16) for fixing the drive motor. The support plate (16) is provided with a through hole for the output shaft of the drive motor to pass through.

5. The hydraulic centrifugal progressive atomizing nozzle according to claim 4, characterized in that: The transmission mechanism includes a transmission shaft (51), one end of which is connected to the output shaft of the drive motor via a coupling (52), and the other end of which is engaged with the centrifugal assembly (4).

6. The hydraulic centrifugal progressive atomizing nozzle according to claim 5, characterized in that: The centrifugal assembly (4) includes a centrifugal disc (41), and a plurality of centrifugal columns (42) are arranged circumferentially on the centrifugal disc (41). The centrifugal columns (42) are all arranged perpendicular to the surface of the centrifugal disc (41).

7. The hydraulic centrifugal progressive atomizing nozzle according to claim 6, characterized in that: The centrifugal disc (41) has a slot (411) at its axis, and a cap (412) is connected to the end of the drive shaft (51). The cap (412) engages with the slot (411).

8. The hydraulic centrifugal progressive atomizing nozzle according to claim 7, characterized in that: The hydraulic nozzle assembly (2) includes an annular liquid storage tank (21), and a number of circumferentially distributed hydraulic nozzles (22) are provided on the outer wall of the annular liquid storage tank (21). An inlet pipe (23) is provided on the annular liquid storage tank (21), and the inlet pipe (23) is connected to the liquid supply unit.

9. The hydraulic centrifugal progressive atomizing nozzle according to any one of claims 1-3 and 5-8, characterized in that: The annular liquid storage tank (21) has an inner ring (24) on its inner ring surface, and the inner ring (24) is connected to the shell (1).

10. The hydraulic centrifugal progressive atomizing nozzle according to claim 9, characterized in that: The liquid supply unit includes a liquid pump connected to the liquid inlet pipe (23), and the liquid pump is connected to the liquid tank.

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