Adjustable internal bubble sector fan nozzle

Abstract

The application provides an adjustable internal bubble sector suction nozzle, comprising a nozzle shell, a gas-liquid mixed flow channel is arranged in the nozzle shell, a perforated plate is arranged in the gas-liquid mixed flow channel and is used for flow regulation and preliminary bubble adjustment, an adjustable rotating disc is arranged in the gas-liquid mixed flow channel below the perforated plate, the adjustable rotating disc is provided with gas holes of different sizes, the size of the generated bubbles is changed by selecting the gas holes of different sizes, a stirring device is arranged in the gas-liquid mixed flow channel below the adjustable rotating disc and is used for expanding the distribution of the bubble group, and a wedge-shaped nozzle is arranged at the outlet of the gas-liquid mixed flow channel. The application realizes flow regulation and preliminary bubble adjustment through the perforated plate, adjusts the size of the bubbles through the adjustable rotating disc, distributes the bubble group to the whole space through the stirring device, and improves the uniformity of the bubbles at the outlet of the nozzle.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air suction nozzles or atomizing sprays of plant protection machinery, in particular to a fan-shaped air suction nozzle with adjustable internal bubbles. BACKGROUND

[0002] Spray drift is an important factor affecting the quality of spraying operation and causing harm to pesticides. Air suction nozzle is an effective anti-drift technology. Based on the Venturi effect, air suction nozzle automatically sucks air to mix with liquid medicine to form a gas-liquid mixed flow, and the gas bubble-containing droplets formed by atomization have a larger particle size and are not easy to drift. The size distribution of the bubbles in the nozzle directly affects the particle size distribution of the spraying droplets and the stability of the spraying. If the bubble size difference is significant, on the one hand, different size bubbles will form droplets with a large difference in particle size, resulting in poor uniformity of the spraying droplets; on the other hand, bubble stratification may occur, i.e. different size bubbles form different levels in space, resulting in irregular pulsation of the spraying and affecting the stability of the spraying. However, the existing air suction nozzle lacks a bubble uniformity adjusting structure, which limits its popularization and application.

[0003] Traditional pesticide application methods often ignore the changes in pest disaster in a certain area, and adopt consistent application amount, resulting in insufficient amount of chemical pesticides in some operation areas and excessive amount in some places. Precision application is an important part of precision agriculture, which can meet the increasingly high environmental protection requirements, and realizes the operation requirements of low amount, precision application, less pollution, high efficiency and high prevention effect. When precision target application is carried out, the most ideal way is to control the fan-shaped angle of the air suction nozzle according to the size of the target, so that the liquid medicine is sprayed to the crop target as much as possible, thereby improving the utilization rate of pesticides. SUMMARY

[0004] In view of the deficiencies in the prior art, the present application provides a fan-shaped air suction nozzle with adjustable internal bubbles, which realizes rectification and preliminary bubble adjustment through a hole plate, adjusts the bubble size through an adjustable turntable, and distributes the bubble group to the whole space through a stirring device, thereby improving the bubble uniformity of the nozzle outlet.

[0005] The present application achieves the above technical purposes through the following technical means.

[0006] A fan-shaped air suction nozzle with adjustable internal bubbles, comprising a nozzle shell, a gas-liquid mixed flow channel is arranged in the nozzle shell, a hole plate is arranged on the gas-liquid mixed flow channel, for rectification and preliminary bubble adjustment; an adjustable turntable is arranged in the gas-liquid mixed flow channel below the hole plate, the adjustable turntable has gas holes of different sizes, the size of the generated bubbles is changed by selecting different size gas holes; a stirring device is arranged in the gas-liquid mixed flow channel below the adjustable turntable, for expanding the distribution of the bubble group; a wedge-shaped nozzle is arranged at the outlet of the gas-liquid mixed flow channel.

[0007] Further, the spray head shell is a split structure, and a hole plate is installed between the split structure spray head shells, and the hole plate is uniformly provided with a plurality of through holes at the gas-liquid mixing flow channel.

[0008] Further, the adjustable rotating disc comprises an adjusting cover, a gas hole sheet and a transmission device; the gas hole sheet is provided with gas holes of different sizes, and a central shaft is arranged at the center of the gas hole sheet; the adjusting cover is alternately provided with closed areas and open areas, and the adjusting cover is rotatably installed on the central shaft, and an outer gear is arranged on the outer ring of the adjusting cover; the adjusting cover is rotated by the transmission device, so that the gas holes of different sizes are communicated with the open areas.

[0009] Further, the size of the gas holes on the gas hole sheet is smaller than the size of the through holes on the hole plate.

[0010] Further, the gas hole sheet is divided into a plurality of fan-shaped areas, and a plurality of gas holes are uniformly arranged on each fan-shaped area, and the diameters of the gas holes on adjacent fan-shaped areas are different.

[0011] Further, the gas hole sheet is divided into a plurality of fan-shaped areas, and a plurality of gas holes are uniformly arranged on each fan-shaped area, and the diameters of the gas holes on each fan-shaped area gradually change along the circumferential direction.

[0012] Further, the stirring device comprises a support column and a paddle, the support column is fixed to the inner wall surface of the gas-liquid mixing flow channel, the support column supports the rotatable paddle at the bottom, and the rotation of the paddle is caused by the impact of the two-phase flow to generate stirring.

[0013] Further, an adjustable fan-shaped sheet is installed at the outlet of the spray head shell, the adjustable fan-shaped sheet is provided with a wedge-shaped angle, the taper on the outer side of the wedge-shaped angle is matched with the wedge-shaped nozzle, the taper on the inner side of the wedge-shaped angle ranges from 15° to 45°, and a semicircular curved surface outlet is arranged in the inner side of the wedge-shaped angle.

[0014] Further, by selecting wedge-shaped angles with different inner side tapers, the diffusion angle of the spray head spray can be changed.

[0015] The beneficial effects of the present application are as follows:

[0016] 1. The adjustable spray head internal bubble fan-shaped air suction spray head can realize rectification and preliminary bubble adjustment through the hole plate, adjust the bubble size through the adjustable rotating disc, and distribute the bubble groups to the whole space through the stirring device, thereby improving the uniformity of the bubbles at the nozzle outlet.

[0017] 2. The adjustable spray head internal bubble fan-shaped air suction spray head is provided with a hole plate between the split structure spray head shells, and the hole plate can adjust the uniformity of the bubbles.

[0018] 3. The adjustable fan-shaped air suction nozzle of the present application, the adjustable rotating disc is provided with air holes with different diameters, the opening range of the adjustable rotating disc is adjusted through a transmission device, the two-phase flow passes through the small holes with different diameters, and the uniformity of the bubbles is adjusted.

[0019] 4. The adjustable fan-shaped air suction nozzle of the present application, a stirring device is arranged in the gas-liquid mixing flow channel below the adjustable rotating disc, the paddle rotates under the impact of the two-phase flow, and the rotation of the paddle also stirs the fluid in the mixing chamber, so as to adjust the uniformity of the bubbles.

[0020] 5. The adjustable fan-shaped air suction nozzle of the present application, an adjustable fan-shaped piece is installed at the outlet of the nozzle shell, and the spray diffusion angle outside the nozzle is adjusted by installing adjustable fan-shaped pieces with different sizes. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. The drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0022] Figure 1 The fan-shaped air suction nozzle cross-sectional view of the present application.

[0023] Figure 2 The upper body cross-sectional view of the present application.

[0024] Figure 3 The lower body cross-sectional view of the present application.

[0025] Figure 4 The orifice plate schematic view of the present application.

[0026] Figure 5 The adjustable rotating disc schematic view of the present application.

[0027] Figure 6 The adjusting cover schematic view of the present application.

[0028] Figure 7 The air hole distribution mode one schematic view of the present application.

[0029] Figure 8 The adjustable rotating disc different position schematic view of the present application.

[0030] Figure 9 The air hole distribution mode two schematic view of the present application.

[0031] Figure 10Schematic diagram of detachable handle according to the present application.

[0032] Figure 11 Schematic diagram of rotating paddle according to the present application.

[0033] Figure 12 Schematic diagram of adjustable sector according to the present application.

[0034] Figure 13 Sectional view of air suction nozzle with adjustable sector according to the present application.

[0035] In the drawings:

[0036] 1 - upper body; 11 - liquid inlet hole; 12 - throat; 13 - air inlet hole; 14 - diffusion section; 2 - lower body; 21 - gas-liquid mixing section; 22 - jet hole; 24 - wedge-shaped outlet; 3 - orifice plate; 4 - adjustable rotary disc; 41 - adjusting cover; 411 - closed area; 412 - open area; 42 - air hole piece; 421 - small diameter part; 422 - large diameter part; 423 - air hole; 43 - transmission device; 431 - handle; 5 - rotating paddle; 51 - paddle; 52 - support; 6 - adjustable sector; 61 - wedge angle; 62 - semicircular curve; 63 - positioning column. DETAILED DESCRIPTION

[0037] Embodiments of the present application are described in detail below with reference to the attached drawings, wherein like or similar elements are denoted by the same or similar reference signs throughout the drawings. The embodiments described below are examples for explaining the present application and are not intended to be limiting of the present application.

[0038] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "axial", "radial", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings and are merely for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0039] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and other terms should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] As shown in Figure 1 The adjustable fan-shaped air suction nozzle of the present application comprises a nozzle shell, a gas-liquid mixed flow channel is arranged in the nozzle shell, a perforated plate 3 is arranged in the gas-liquid mixed flow channel for flow regulation and preliminary bubble adjustment; an adjustable turntable 4 is arranged in the gas-liquid mixed flow channel below the perforated plate 3, the adjustable turntable 4 has gas holes of different sizes, and the size of the generated bubbles can be changed by selecting gas holes of different sizes; a stirring device is arranged in the gas-liquid mixed flow channel below the adjustable turntable 4 for expanding the distribution of bubble groups; a wedge-shaped nozzle is arranged at the outlet of the gas-liquid mixed flow channel. The nozzle shell is made of transparent glass material, and the adjustable turntable 4 is made of plastic material, so that the opening position of the adjustable turntable 4 can be easily observed.

[0041] The nozzle shell is a split structure, which is formed by butting the upper body 1 and the lower body 2, as shown in FIG. 2, the upper body 1 includes a liquid inlet hole 11, a throat pipe 12 and a diffusion section 14, the liquid inlet hole 11 is in communication with the throat pipe 12, air inlet holes 13 are arranged on both sides of the throat pipe 12 for air inlet. The outlet of the throat pipe 12 is connected to the diffusion section 14. Connection holes are arranged on both sides of the upper body 1 for butt joint with the lower body 2. As shown in FIG. 3, the lower body 2 includes a gas-liquid mixing section 21, a nozzle hole 22 and a wedge-shaped outlet 24, the inlet of the gas-liquid mixing section 21 is in communication with the diffusion section 14, the outlet of the gas-liquid mixing section 21 is provided with the nozzle hole 22, the nozzle hole is semispherical, the bottom of the lower body 2 is the wedge-shaped outlet 24, the wedge-shaped outlet 24 forms the outlet of the nozzle through the nozzle hole 22, four connection holes are arranged on both sides of the bottom of the lower body 2 for connection with the adjustable fan-shaped piece 6. The throat pipe 12, the diffusion section 14 and the gas-liquid mixing section 21 constitute a gas-liquid mixed flow channel.

[0042] As shown in Figure 4 The perforated plate 3 is installed between the upper body 1 and the lower body 2, and the perforated plate 3 is clamped by fasteners, and there is no gap between the upper body 1, the perforated plate 3 and the lower body 2 after fixing. The perforated plate 3 is uniformly distributed with a plurality of through holes at the gas-liquid mixed flow channel. Figure 4The shape of the through holes in the hole plate 3 includes, but is not limited to, circle, square, equilateral hexagon, triangle, diamond, and ellipse, etc. If the shape of the through holes in the hole plate 3 is circle, the diameter of the circle is between 0.3-0.6 mm. If the shape of the through holes in the hole plate 3 is square, the side length of the square is between 0.3-0.6 mm. If the shape of the through holes in the hole plate 3 is equilateral hexagon, the diameter of the inscribed circle of the equilateral hexagon is between 0.3-0.6 mm. If the shape of the through holes in the hole plate 3 is other shape, the size range should also be adjusted according to the specific shape. The thickness of the hole plate 3 is between 0.5-1 mm.

[0043] As shown in Figure 5 and Figure 10 The adjustable rotary disc 4 includes an adjusting cover 41, a gas hole sheet 42, and a transmission device. The gas hole sheet 42 is provided with different size gas holes 423, and the center of the gas hole sheet 42 is provided with a center shaft. The adjusting cover 41 is alternately provided with closed areas 411 and open areas 412, and the adjusting cover 41 is rotatably installed on the center shaft. The outer circle of the adjusting cover 41 is provided with external teeth, and the adjusting cover 41 is rotated by the transmission device, so as to make the different size gas holes 423 communicate with the open areas 412. The size of the gas holes 423 on the gas hole sheet 42 is smaller than the size of the through holes on the hole plate 3. The transmission device 43 is also provided with gears on the circumference, and the gears match the gears on the circumference of the adjusting cover 41. The gear matching can be bevel gear matching or worm gear matching. In the embodiment, the transmission device 43 is a rotating operating rod 431 with teeth at one end, and the other end of the rotating operating rod 431 extends to the outside of the lower body 2. The adjusting cover 41 is rotated by manually rotating the rotating operating rod 431.

[0044] As shown in Figure 6 The adjusting cover 41 is circular, and the diameter of the adjusting cover 41 is slightly smaller than the diameter of the gas-liquid mixing section 21. The adjusting cover 41 is alternately provided with closed areas 411 and open areas 412. The closed areas 411 and the open areas 412 are distributed as follows: the adjusting cover 41 is evenly divided into sectors with the same area, the number of the sectors is even, and the closed areas 411 and the open areas 412 are alternately arranged in the sectors. In the embodiment, the adjusting cover 41 is evenly divided into 6 sectors, and the closed areas 411 and the open areas 412 alternately appear, each containing 3 sectors. The position of the closed areas 411 and the open areas 412 can be adjusted by rotating the adjusting cover 41.

[0045] As shown in Figure 7As shown, the air hole sheet 42 is provided with air holes 423, the shape of the air holes 423 includes but is not limited to circular, square, equilateral hexagon, triangle, diamond and ellipse, etc. If the shape of the air hole 423 is circular, the diameter of the circle is between 0.1-0.3 mm; if the shape of the air hole 423 is square, the side length of the square is between 0.1-0.3 mm; if the shape of the air hole 423 is equilateral hexagon, the diameter of the inscribed circle of the equilateral hexagon is between 0.05-0.15 mm; if the shape of the air hole 423 is other shape, the size range should also be adjusted according to the specific shape. The air holes 423 are distributed in a circular area, and the diameter of the circular area is the same as the diameter of the gas-liquid mixing section 21.

[0046] As shown in FIG. 4, the air hole sheet 42 is provided with air holes 423, and the air hole sheet 42 is provided with a plurality of air holes 423. Figure 7 One of the distribution modes of the air holes 423 is to divide the air hole sheet 42 into fan-shaped areas with the same area, the number of fan-shaped areas is even, and air holes 423 with different diameters are arranged on adjacent fan-shaped areas. Specifically, the air hole sheet 42 is divided into 6 fan-shaped areas, and large-diameter air holes and small-diameter air holes are alternately arranged on adjacent fan-shaped areas, that is, 3 fan-shaped areas are provided with small-diameter air holes, which are small-diameter parts 421; and the other 3 fan-shaped areas are provided with large-diameter air holes, which are large-diameter parts 422. Under this distribution mode, the number of fan-shaped areas divided by the air hole sheet 42 is the same as the number of fan-shaped areas on the adjusting cover 41.

[0047] As shown in FIG. 4, the air hole sheet 42 is provided with air holes 423, and the air hole sheet 42 is provided with a plurality of air holes 423. Figure 9 The second distribution mode of the air holes 423 is to divide the air hole sheet 42 into fan-shaped areas with the same area, and the diameter of the air holes 423 on each fan-shaped area gradually increases along the circumferential direction. Under this distribution mode, the number of fan-shaped areas divided by the air hole sheet 42 is half of the number of fan-shaped areas on the adjusting cover 41.

[0048] As shown in FIG. 4, the air hole sheet 42 is provided with air holes 423, and the air hole sheet 42 is provided with a plurality of air holes 423. Figure 8 As shown, when the adjusting cover 41 of the adjustable turntable 4 is rotated to different positions, the adjustable turntable 4 has different bubble adjusting effects due to the different diameters of the air holes 423 blocked by the air hole sheet 42. For example, when the small-diameter part 421 of the air hole sheet 42 is blocked by the adjusting cover 41, the diameter of the bubbles adjusted by the large-diameter part 422 is relatively large; when the large-diameter part 422 of the air hole sheet 42 is blocked by the adjusting cover 41, the diameter of the bubbles adjusted by the small-diameter part 421 is relatively small. When the adjusting cover 41 is rotated to other positions, the diameter of the bubbles is related to the area ratio of the small-diameter part 421 and the large-diameter part 422 blocked.

[0049] As shown in FIG. 4, the air hole sheet 42 is provided with air holes 423, and the air hole sheet 42 is provided with a plurality of air holes 423. Figure 11As shown, the stirring device includes a support column 52 and a paddle 51, the support column 52 is fixed on the inner wall of the gas-liquid mixing flow channel, the bottom of the support column 52 supports the rotatable paddle 51, the rotation of the paddle is caused by the impact of the two-phase flow to generate stirring, and the uniformity of the bubbles is adjusted. The shape of the paddle 51 includes but is not limited to straight leaf shape, curved leaf shape, sickle shape, trapezoidal shape and inverted trapezoidal shape, and other shapes with similar functions.

[0050] As shown in the figure, Figure 12 The outlet of the nozzle shell is installed with an adjustable sector 6 through a positioning column 63, the adjustable sector 6 is provided with a wedge angle 61, the taper of the outer side of the wedge angle 61 is matched with the wedge-shaped nozzle, the taper of the inner side of the wedge angle 61 ranges from 15° to 45°, and can be 15°, 20°, 25°, 30°, 35°, 40° or 45°, and other angles within the range; the inner side of the wedge angle 61 is provided with a semicircular curved surface 62 outlet.

[0051] As shown in the figure, Figure 13 The spray diffusion angle of the nozzle can be adjusted by installing different adjustable sectors 6; when the adjustable sector 6 is installed with the lower body 2, the upper side of the wedge angle 61 of the adjustable sector 6 is matched with the wedge-shaped outlet 24 of the nozzle lower body 2, and the semicircular curved surface 62 of the adjustable sector 6 is also matched with the nozzle terminal of the lower body 2.

[0052] Embodiment 1

[0053] As shown in the figure, Figure 13 The adjustable sector 6 is installed at the outlet position of the nozzle lower body 2; the lower side angle of the wedge angle 61 of the adjustable sector 6 changes within the range of 15°-45°, and the adjustable sector 6 with different wedge angles 61 is installed to produce different spray angles. When the present application is used, it needs to be installed at the end of the spraying system, like a conventional sector nozzle. Figure 12 As shown in the figure, the wedge angle 61 of the adjustable sector 6 installed in this embodiment is 20°; after passing through the gas-liquid mixing section 21, the two-phase flow passes through the spray hole 22, and at the outlet of the nozzle, the two-phase flow passes through the 20° wedge angle 61 to become a sector spray, realizing the adjustment of the spray diffusion angle outside the nozzle.

[0054] In this embodiment, the orifice plate 3 is circular with a diameter of 0.2 mm. The liquid medicine enters the throat tube 12 through the liquid inlet 11. Air inlets 13 are provided on both sides of the throat tube 12 for air intake. Based on the Venturi effect, the suction nozzle automatically draws in air and mixes it with the liquid medicine to form a gas-liquid two-phase flow. The two-phase flow enters the diffusion section 14, which can improve the stability of the mixed flow. Then the two-phase flow flows into the orifice plate 3, and the bubbles are divided into small bubbles with a size of 0.2 mm through the through holes of the orifice plate 3, realizing the initial adjustment and rectification of bubble uniformity. The circular holes are beneficial to improve separation efficiency and reduce flow resistance, but the circular holes may cause the bubbles to form symmetrical bubble shapes in the gasket holes 31, which is not conducive to the complete filtration of bubbles. Therefore, other devices are needed to further adjust the bubble uniformity.

[0055] The air holes 423 used in the adjustable turntable are triangular in shape, and the distribution pattern of the air holes 423 is one of the distribution patterns; the side length of the air holes 423 in the large diameter part 422 of the air hole plate 42 is 0.2 mm, and the side length of the air holes 423 in the small diameter part 421 is 0.1 mm; such as Figure 8 As shown, by rotating the control lever 431, the adjusting cover 41 completely blocks the small-diameter portion 421, meaning that the bubbles only pass through the large-diameter portion 422, thus achieving further adjustment of the bubble uniformity. In this embodiment, the advantage of the triangular hole is that it can increase the contact area between the bubble and the hole wall. The sharp corner of the triangular hole can effectively cut the bubble, making it easier to be homogenized. However, the sharp corner of the triangular hole may cause the bubble to encounter greater resistance when passing through the hole, so the triangular hole is placed after the first adjustment. When two-phase flow passes through, the impeller 51 rotates due to the impact of the two-phase flow. The rotation of the impeller 51 generates a stirring effect, achieving a uniform distribution of bubbles in the gas-liquid mixing section 21.

[0056] Example 2

[0057] When using this invention, like conventional fan-shaped nozzles, it needs to be installed at the end of the spraying system. Figure 1 As shown, in this embodiment, the through holes of the perforated plate 3 are circular with a diameter of 0.2 mm; Figure 9 As shown, in this embodiment, the air hole 423 of the adjustable turntable 4 is also circular, and the air hole 423 is distributed in the second distribution mode. The diameter of the air hole 423 is between 0.1-0.3mm. The wedge angle 61 of the adjustable fan-shaped blade 6 added in this embodiment is 20°. The blade 51 added in this embodiment is a straight blade.

[0058] The liquid medicine entering the spray head first passes through the liquid inlet hole 11 and the throat pipe 12, and the throat pipe 12 is provided with air inlet holes 13 on both sides for air inlet. Based on the Venturi effect, the air suction spray head automatically sucks in air and mixes with the liquid medicine to form a gas-liquid two-phase flow. The two-phase flow enters the diffusion section 14, which can improve the stability of the mixed flow. The bubbles are divided into small bubbles with a size not greater than 0.2 mm through the through holes of the hole plate 3, eliminating the uneven flow phenomena such as vortex and secondary flow in the two-phase flow, and achieving preliminary adjustment of the uniformity of the bubbles. The two-phase flow enters the gas-liquid mixing section 21 and passes through the adjustable turntable 4 fixed to the inner wall of the gas-liquid mixing section 21. In this embodiment, the two-phase flow only passes through a smaller part of the air hole 423 by adjusting the operating rod 431, that is, the bubbles passing through the adjustable turntable 4 have a diameter not greater than 0.15 mm through the combined action of the air hole plate 42 and the adjusting cover 41, achieving further adjustment of the uniformity of the bubbles. When the two-phase flow flows through, the paddle 51 rotates under the impact of the two-phase flow, and the rotation of the paddle 51 produces a stirring effect, achieving uniform distribution of the bubbles in the gas-liquid mixing section 21. After passing through the gas-liquid mixing section 21, the two-phase flow passes through the spray hole 22, and at the outlet of the spray head, the two-phase flow changes into a fan-shaped spray through a wedge-shaped angle 61 of 20°, achieving adjustment of the spray diffusion angle outside the spray head.

[0059] In this embodiment, the hole plate is used to achieve rectification and preliminary bubble adjustment, the adjustable turntable is used to adjust the bubble size, and the stirring device is used to distribute the bubble group to the entire space, achieving three times of adjustment of the uniformity of the bubble size of the two-phase flow and adjustment of the spray angle, achieving adjustable bubble size and spray angle within a certain range; making the spray more uniformly distributed in the target area, the liquid medicine covering the target to the maximum extent, thereby achieving wider coverage and better spray effect, improving the utilization rate of the pesticide and reducing pollution caused by abuse of the pesticide.

[0060] It should be understood that although the present specification is described in terms of various embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

[0061] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present application, and are not intended to limit the protection scope of the present application, and any equivalent embodiments or changes made without departing from the spirit of the present application should be included in the protection scope of the present application.

Claims

1. An adjustable shower internal bubble sector-suction showerhead, characterized by, The application relates to a nozzle shell, which is internally provided with a gas-liquid mixing flow channel, wherein a perforated plate (3) is arranged in the gas-liquid mixing flow channel for rectification and initial bubble adjustment; an adjustable rotary disc (4) is arranged in the gas-liquid mixing flow channel below the perforated plate (3), the adjustable rotary disc (4) is provided with gas holes of different sizes, and the sizes of the generated bubbles are changed by selecting the gas holes of different sizes; a stirring device is arranged in the gas-liquid mixing flow channel below the adjustable rotary disc (4) for expanding the distribution of bubble groups; and a wedge-shaped nozzle is arranged at the outlet of the gas-liquid mixing flow channel. The nozzle shell is of a split structure, and the perforated plate (3) is arranged between the split nozzle shells; and the perforated plate (3) is uniformly provided with a plurality of through holes at the gas-liquid mixing flow channel. The adjustable rotary disc (4) comprises an adjusting cover (41), a gas hole sheet (42) and a transmission device; the gas hole sheet (42) is provided with gas holes (423) of different sizes, and the center of the gas hole sheet (42) is provided with a central shaft; the adjusting cover (41) is alternately provided with closed areas (411) and open areas (412), the adjusting cover (41) is rotatably arranged on the central shaft, the outer ring of the adjusting cover (41) is provided with external teeth, the adjusting cover (41) is rotated through the transmission device, and the gas holes (423) of different sizes are communicated with the open areas (412). The sizes of the gas holes (423) on the gas hole sheet (42) are smaller than the sizes of the through holes on the perforated plate (3).

2. The adjustable showerhead internal bubble sector siphonic showerhead of claim 1, wherein, The gas hole sheet (42) is divided into a plurality of fan-shaped areas, a plurality of gas holes (423) are uniformly arranged on each fan-shaped area, and the diameters of the gas holes (423) on the adjacent fan-shaped areas are different.

3. The adjustable showerhead internal bubble sector siphonic showerhead of claim 1, wherein, The gas hole sheet (42) is divided into a plurality of fan-shaped areas, a plurality of gas holes (423) are uniformly arranged on each fan-shaped area, and the diameters of the gas holes (423) on each fan-shaped area gradually change along the circumferential direction.

4. The adjustable showerhead internal bubble sector siphonic showerhead of claim 1, wherein, The stirring device comprises a support column (52) and a paddle (51), the support column (52) is fixed to the inner wall of the gas-liquid mixing flow channel, the bottom of the support column (52) supports the rotatable paddle (51), and the rotation of the paddle is caused by the impact of two-phase flow to generate stirring.

5. The adjustable shower internal bubble quadrant suction showerhead of any of claims 1-4, wherein, An adjustable fan-shaped sheet (6) is arranged at the outlet of the nozzle shell, the adjustable fan-shaped sheet (6) is provided with a wedge-shaped angle (61), the taper on the outer side of the wedge-shaped angle (61) is matched with the wedge-shaped nozzle, the taper on the inner side of the wedge-shaped angle (61) ranges from 15 DEG to 45 DEG, and a semicircular curved surface (62) is arranged in the inner side of the wedge-shaped angle (61).

6. The adjustable showerhead internal bubble sector siphonic showerhead of claim 5, wherein, The diffusion angle of the nozzle spray is changed by selecting the wedge-shaped angle (61) with different inner side tapers.

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