Vortex ring pollination device for blueberries
By designing a blueberry vortex pollination device, the pollen was transported and atomized without clogging, and a stable vortex airflow was generated. This solved the problems of uniformity and efficiency in blueberry pollination, improved pollen utilization and stigma adhesion rate, and reduced flower damage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-04
- Publication Date
- 2026-03-31
AI Technical Summary
The lack of existing technologies for generating stable pollen-carrying vortex devices suitable for small flower clusters results in poor uniformity, low success rate, and low operational efficiency in blueberry pollination.
A blueberry vortex pollination device was designed, including a pollen supply system, a pollination chamber, an outer chamber, and a vortex generation system. The device achieves anti-clogging delivery and atomization of pollen through a fan-screw linkage design, and uses a special nozzle to generate a stable vortex airflow to ensure uniform pollen diffusion and stigma adhesion.
It improves pollen utilization and stigma adhesion, reduces flower damage, enhances pollination uniformity and efficiency, and is adaptable to blueberry flower clusters of different sizes.
Smart Images
Figure CN121753710A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of agricultural pollination device technology, and in particular to a blueberry vortex pollination device. Background Technology
[0002] Blueberry flowers are small and densely clustered, and their pollination efficiency directly affects fruit set and quality. Currently, large-scale cultivation mainly relies on natural pollination (such as by bees) or traditional artificial pollination (such as spraying pollen with blowers). Natural pollination is greatly affected by weather and bee activity, resulting in poor stability; traditional mechanical pollination often uses unidirectional high-speed airflow, leading to significant pollen waste, uneven distribution within the flower cluster, and potential flower damage. Both pollination efficiency and accuracy need improvement.
[0003] A vortex ring is a stable, slow-diffusion annular vortex. If pollen can be carried in the vortex ring airflow, allowing it to slowly and evenly envelop and contact the flower cluster, it is expected to significantly improve pollen utilization and stigma adhesion rate. However, current technologies lack an integrated device capable of stably generating pollen-carrying vortices suitable for small flower clusters and achieving efficient pollen atomization and transport, resulting in poor uniformity, low success rate, and low operational efficiency in blueberry pollination. Summary of the Invention
[0004] To address or partially address the problems existing in related technologies, this application provides a blueberry vortex pollination device that can efficiently generate stable vortices and achieve automatic anti-blocking supply, full atomization mixing, and directional delivery of pollen, thereby significantly improving pollen quality.
[0005] This application provides a blueberry vortex pollination device, comprising: Pollen supply system 1 is used to store, prevent clogging, transport and atomize pollen; A cylindrical pollination chamber 2 is located below the pollen supply system 1 and is connected to the pollen supply system 1. An outer cavity 3 is fitted outside the pollination cavity 2. The top of the outer cavity 3 is sealed to the pollination cavity 2, and the bottom is located below the pollination cavity 2 and is provided with a flexible sealing opening 31. A vortex ring generating system 4 is installed on the outer cavity 3 and communicates with the inner cavity of the pollination cavity 2; The pollination shell 5 is installed on the outside of the pollen supply system 1, pollination cavity 2, outer cavity 3, and vortex ring generating system 4. The bottom of the pollination shell 5 is open for the installation of the flexible sealing opening 31, and the side is provided with a side wall opening for the operation of the vortex ring generating system 4. The vortex ring generating system 4 includes two sets of special nozzles, namely an upper clockwise nozzle group 41 and a lower counterclockwise nozzle group 42. The upper clockwise nozzle group 41 and the lower counterclockwise nozzle group 42 are respectively arranged around the side wall of the pollination chamber 1 and located at the upper part of the pollination chamber 1. The upper clockwise nozzle group 41 and the lower counterclockwise nozzle group 42 are staggered in the vertical direction.
[0006] Optionally, in some embodiments, the pollen supply system 1 includes: Pollen box 11 has a pollen inlet 12 and an air pressure interface 13 at the top and a conical outlet 14 at the bottom; A spherical mixing chamber 15 is located on the lower side of the pollen box 11 and communicates with the conical discharge port 14. A spiral rod 16 is rotatably mounted coaxially inside the conical discharge port 14. The bottom end of the spiral rod 16 extends to the center of the spherical mixing chamber 15 and is fixedly connected to a fan 17 to prevent pollen from bridging and clogging at the conical discharge port 14. Two gas nozzles 18 are horizontally arranged at the center of the spherical mixing chamber 15. The axes of the two gas nozzles 18 are arranged in a staggered and centrally symmetrical manner. The fan 17 is located on the jet path of the two gas nozzles 18.
[0007] Optionally, in some embodiments, the special nozzle includes an ellipsoidal rear cavity 411 and a cylindrical nozzle 412 connected in sequence. The inner wall of the cylindrical nozzle 412 is provided with an integrally formed spiral guide vane 413. The spiral direction of the spiral guide vane 413 of the upper clockwise nozzle group 41 is clockwise, and the spiral direction of the spiral guide vane 413 of the lower counterclockwise nozzle group 42 is counterclockwise.
[0008] Optionally, in some embodiments, the axis of the upper clockwise nozzle group 41 is tangentially 38° clockwise to the radial direction of the pollination chamber 2, and the axis of the lower counterclockwise nozzle group 42 is tangentially 38° counterclockwise to the radial direction of the pollination chamber 2.
[0009] Optionally, in some embodiments, the major axis of the ellipsoidal rear cavity 411 is arranged along the airflow direction.
[0010] Optionally, in some embodiments, the helix angle of the spiral guide vane 413 is 30°-60°.
[0011] Optionally, in some embodiments, the inner diameter of the cylindrical nozzle 412 is smaller than the minor axis length of the ellipsoidal rear cavity 411.
[0012] Optionally, in some embodiments, the pollen box 11 is cylindrical, with its conical outlet 14 at the bottom extending into the spherical mixing chamber 15.
[0013] Optionally, in some embodiments, the fan 17 has no fewer than six blades.
[0014] Optionally, in some embodiments, the flexible sealing opening 31 is frustum-shaped and made of silicone.
[0015] The technical solution provided in this application may include the following beneficial effects: (1) Integrated high-efficiency pollen treatment: Through the airflow-driven fan-screw linkage design, the three functions of pollen anti-clogging, pneumatic stirring and mixing and downward pushing are creatively integrated. The structure is compact, no additional motor drive is required, and the reliability is high. (2) Stable and controllable vortex ring generation: Using a special nozzle with an ellipsoidal rear cavity and an integrated spiral guide vane, combined with a precise layout of 38° opposite tangential angles between the upper and lower layers, it can generate two airflows with concentrated rotational energy, clear direction and stable flow field. After collision, they form an extremely uniform three-dimensional vortex ring field, which is very suitable for the shape of blueberry flower clusters. (3) Precise pollination and low damage: The generated vortex airflow is relatively gentle but fills the cavity, which can keep the pollen suspended for a long time and evenly wrap the flower cluster, greatly improving the contact opportunity and adhesion uniformity between the pollen and the stigma, while avoiding physical damage to the delicate flowers caused by high-speed direct airflow. (4) High adaptability: The flexible sealing design at the bottom enables the device to adapt to the pollination needs of blueberry flower clusters of different sizes.
[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description
[0017] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.
[0018] Figure 1 This is a three-dimensional structural schematic diagram of the blueberry vortex pollination device shown in the embodiments of this application; Figure 2 This application Figure 1 A schematic diagram of the AA cross-sectional structure; Figure 3 This is a schematic diagram of the main structure of the blueberry vortex pollination device shown in the embodiments of this application; Figure 4 This application Figure 3 Schematic diagram of the BB cross-sectional structure; Figure 5 This is a structural diagram illustrating the arrangement of the gas nozzle and two sets of special nozzles in an embodiment of this application; Figure 6This is a schematic diagram of the internal structure of the nozzles in the upper clockwise nozzle group shown in an embodiment of this application; Figure 7 This is a schematic diagram of the internal structure of the nozzles in the lower counterclockwise nozzle group shown in an embodiment of this application.
[0019] Figure label: 1-Pollen supply system, 2-Pollening chamber, 3-Outer chamber, 4-Vortex ring generating system, 5-Pollening shell; 11-Pollen box, 12-Pollen inlet, 13-Air pressure interface, 14-Conical outlet, 15-Spherical mixing chamber, 16-Screw rod, 17-Fan, 18-Gas nozzle; 31 - Flexible sealing opening; 41-Upper layer clockwise nozzle group, 42-Lower layer counterclockwise nozzle group, 411-Ellipsoidal rear cavity, 412-Cylindrical nozzle, 413-Helical guide vane. Detailed Implementation
[0020] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.
[0021] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0022] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0023] Referring to the illustration, the blueberry vortex pollination device includes: Pollen supply system 1 is used to store, prevent clogging, transport and atomize pollen; A cylindrical pollination chamber 2 is located below the pollen supply system 1 and is connected to the pollen supply system 1. An outer cavity 3 is fitted outside the pollination cavity 2. The top of the outer cavity 3 is sealed to the pollination cavity 2, and the bottom is located below the pollination cavity 2 and is provided with a flexible sealing opening 31. A vortex ring generating system 4 is installed on the outer cavity 3 and communicates with the inner cavity of the pollination cavity 2; The pollination shell 5 is installed on the outside of the pollen supply system 1, pollination cavity 2, outer cavity 3, and vortex ring generating system 4. The bottom of the pollination shell 5 is open for the installation of the flexible sealing opening 31, and the side is provided with a side wall opening for the operation of the vortex ring generating system 4. The vortex ring generating system 4 includes two sets of special nozzles, namely an upper clockwise nozzle group 41 and a lower counterclockwise nozzle group 42. The upper clockwise nozzle group 41 and the lower counterclockwise nozzle group 42 are respectively arranged around the side wall of the pollination chamber 1 and located at the upper part of the pollination chamber 1. The upper clockwise nozzle group 41 and the lower counterclockwise nozzle group 42 are staggered in the vertical direction.
[0024] During operation, the pollen supply system 1, located at the top of the device, stores, prevents clogging, and atomizes the pollen. The atomized pollen enters the pollination chamber 2 connected below. Subsequently, the vortex ring generating system 4 is activated, with the upper clockwise nozzle group 41 and the lower counterclockwise nozzle group 42 ejecting airflows in different rotational directions, forming a stable vortex ring inside the pollination chamber 2. Simultaneously, the sealing structure between the outer chamber 3 and the pollination chamber 2, along with the bottom flexible sealing opening 31, creates a relatively sealed space within the pollination chamber 2, preventing pollen loss. The vortex ring carries the pollen and diffuses it evenly within the sealed pollination chamber 2, ensuring full contact with the flower clusters for pollination. The pollination shell 5 protects and integrates the internal components, ensuring the coordinated operation of all systems.
[0025] In some embodiments, the pollen supply system 1 includes: Pollen box 11 has a pollen inlet 12 and an air pressure interface 13 at the top and a conical outlet 14 at the bottom; A spherical mixing chamber 15 is located on the lower side of the pollen box 11 and communicates with the conical discharge port 14. A spiral rod 16 is coaxially and rotatably installed inside the conical discharge port 14. The bottom end of the spiral rod 16 extends to the center of the spherical mixing chamber 15 and is fixedly connected to a fan 17 to prevent pollen from bridging and clogging at the conical discharge port 14. Two gas nozzles 18 are horizontally arranged at the center of the spherical mixing chamber 15, and the axes of the two gas nozzles 18 are arranged in a staggered, centrally symmetrical manner. The fan 17 is located on the jet path of the two gas nozzles 18. The pollen box 11 is cylindrical, and its conical discharge port 14 at the bottom extends into the spherical mixing chamber 15.
[0026] During operation, the pollen box 11 is cylindrical in shape, with a pollen inlet 12 and a pressure port 13 for connecting to a low-pressure air source at the top. The bottom narrows into a conical outlet 14. To effectively prevent pollen from bridging and clogging at the outlet, a freely rotatable spiral rod 16 is coaxially installed inside the conical outlet 14. The top of the spherical mixing chamber 15 has a round opening that is directly connected to the conical outlet 14 of the pollen box 11.
[0027] Pollen is added to the pollen box 11 through the pollen inlet 12, and the air pressure interface 13 is connected to a low-pressure air source. Simultaneously, two gas nozzles 18 eject airflow, impacting the fan 17 and causing it to rotate at high speed. The fan 17 drives the coaxial screw rod 16 to rotate synchronously. During the rotation of the screw rod 16, the pollen at the bottom of the pollen box 11 is continuously loosened, preventing bridging and blockage at the conical outlet 14, and the pollen is stably pushed into the spherical mixing chamber 15. The pollen entering the spherical mixing chamber 15 is dispersed by the high-speed rotating fan 17, fully mixing with the air to form a uniform pollen cloud, providing a pollen source with good atomization for subsequent pollination.
[0028] The cylindrical pollen box 11 facilitates pollen storage and allows pollen to gather towards the bottom conical outlet 14 under gravity. The conical outlet 14 extends into the spherical mixing chamber 15, enabling the pollen pushed out by the screw rod 16 to directly enter the core area of the spherical mixing chamber 15, avoiding pollen residue at the connection between the outlet and the mixing chamber. Simultaneously, it shortens the distance from the outlet to the mixing area of the fan 17, allowing the pollen to be quickly dispersed and atomized by the fan 17, improving the mixing efficiency of pollen and air and reducing pollen waste.
[0029] In some embodiments, the special nozzle includes an ellipsoidal rear cavity 411 and a cylindrical nozzle 412 connected in sequence. The inner wall of the cylindrical nozzle 412 is provided with an integrally formed spiral guide vane 413. The spiral guide vane 413 of the upper clockwise nozzle group 41 has a clockwise spiral direction, and the spiral guide vane 413 of the lower counterclockwise nozzle group 42 has a counterclockwise spiral direction.
[0030] During operation, the high-pressure airflow first enters the ellipsoidal rear cavity 411, which buffers and stabilizes the airflow, making it smoother. When the stabilized airflow enters the cylindrical nozzle 412, it is guided by the spiral guide vanes 413 on the inner wall. The airflow in the upper clockwise nozzle group 41 rotates clockwise, and the airflow in the lower counterclockwise nozzle group 42 rotates counterclockwise. Through the structural design of the spiral guide vanes 413, precise control of the airflow rotation direction is achieved, laying the foundation for the formation of a stable vortex ring by the collision of the upper and lower airflows.
[0031] In some embodiments, the axis of the upper clockwise nozzle group 41 is tangentially 38° clockwise to the radial direction of the pollination chamber 2, and the axis of the lower counterclockwise nozzle group 42 is tangentially 38° counterclockwise to the radial direction of the pollination chamber 2.
[0032] During operation, when the high-pressure airflow is ejected from the two sets of nozzles, the 38° tangential angle design ensures that the airflow does not travel radially directly into the pollination chamber 2, but rather enters tangentially. The upper clockwise rotating airflow and the lower counterclockwise rotating airflow, guided by the tangential angle, precisely collide in a specific area within the pollination chamber 2. This angle design ensures that the energy of the two airflows is concentrated and their directions are complementary during collision, enabling them to efficiently merge and form a stable three-dimensional vortex ring covering the flower cluster area, thus improving the uniformity of pollen carrying and diffusion.
[0033] In some embodiments, the major axis of the ellipsoidal rear cavity 411 is arranged along the airflow direction.
[0034] During operation, the airflow enters the rear cavity 411 along the long axis. The design, with the long axis aligned with the airflow direction, reduces resistance during flow, allowing for smoother passage through the rear cavity. Simultaneously, this arrangement helps create a uniform and stable flow field during subsequent buffering and stabilization processes, preventing airflow turbulence from affecting the rotation effect. This provides stable preconditions for the spiral guide vanes 413 at the cylindrical nozzle 412 to guide the airflow rotation.
[0035] In some embodiments, the helix angle of the spiral guide vane 413 is 30°-60°.
[0036] During operation, when the airflow passes through the cylindrical nozzle 412, the spiral angle of 30°-60° enables the spiral guide vane 413 to provide appropriate guidance for the airflow. This angle range ensures that the airflow can obtain sufficient rotational speed to form a stable vortex ring after the collision of the upper and lower airflow layers; it also avoids the problems of excessively large spiral angles leading to a surge in airflow resistance and excessive energy loss, or excessively small spiral angles leading to insufficient airflow rotation and unstable vortex ring formation, thus ensuring a balance between airflow rotation effect and energy efficiency.
[0037] In some embodiments, the inner diameter of the cylindrical nozzle 412 is smaller than the minor axis length of the ellipsoidal rear cavity 411.
[0038] During operation, the airflow is stabilized in the ellipsoidal rear cavity 411 and then ejected from the cylindrical nozzle 412 with a smaller inner diameter. According to the principles of fluid dynamics, the airflow velocity increases as it enters the small-diameter nozzle from the large-volume rear cavity, while the pressure distribution becomes more concentrated. This structural design makes the ejected airflow energy more concentrated and the rotation effect more significant. It can enhance the impact force and fusion effect when the upper and lower airflows collide, thereby forming a more stable vortex ring with a more suitable diffusion speed and improving pollen attachment efficiency.
[0039] In some embodiments, the fan 17 has at least six blades.
[0040] During operation, the rotating mechanism generates a stronger and more uniform airflow. On the one hand, the multi-blade design enhances the stirring and dispersing effect of pollen, allowing the pollen to be fully atomized and form a uniform pollen cloud. On the other hand, more blades can generate a stronger downward axial airflow component, which efficiently pushes the atomized pollen cloud to the pollination chamber 2, preventing pollen from lingering in the spherical mixing chamber 15 and ensuring the smoothness and efficiency of pollen delivery.
[0041] In some embodiments, the flexible sealing opening 31 is frustum-shaped and made of silicone.
[0042] During operation, particularly during pollination, the frustum-shaped opening better conforms to blueberry flower clusters of varying sizes and shapes, along with surrounding branches, creating a tight seal and preventing pollen loss from the bottom of the pollination chamber. The silicone material, being soft and elastic, effectively cushions the pressure of the device on the branches and flowers upon contact with the plant, preventing mechanical damage. Simultaneously, the silicone's wear-resistant and corrosion-resistant properties ensure the stability and reliability of the opening during long-term use, adapting to the complex environments of agricultural operations.
[0043] The working process of this application: The device is lowered so that the bottom flexible sealing opening 31 covers the target blueberry cluster. Low-pressure air is introduced into the pollen box 11, and at the same time, the two gas nozzles 18 of the spherical mixing chamber 15 are opened. The airflow from the gas nozzles 18 drives the fan 17 to rotate at high speed, which in turn drives the spiral rod 16 to rotate, continuously and evenly loosening and pushing the pollen down. The falling pollen is dispersed by the rotating fan 17 and mixed with the air to form a uniform pollen cloud. At the same time, the downward airflow generated by the fan rotation pushes the pollen cloud into the pollination chamber 2.
[0044] Subsequently, the high-pressure gas source supplying the vortex ring generating system 4 is activated. After being stabilized by the ellipsoidal rear cavity 411 of the special nozzle, the high-pressure airflow enters the cylindrical nozzle 412 and is given high-speed rotation by the spiral guide vanes 413. The clockwise rotating airflow generated by the upper clockwise nozzle group 41 and the counterclockwise rotating airflow generated by the lower counterclockwise nozzle group 42 collide and merge in the lower part of the pollination chamber 2, forming a stable three-dimensional spiral vortex ring. The pollen cloud that previously entered the chamber is captured and carried by this vortex ring, slowly and evenly circulating and diffusing around the flower cluster. After several seconds, the pollen fully adheres to the stigma, completing pollination.
[0045] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.
Claims
1. A blueberry vortex pollination device, characterized in that: The blueberry vortex pollination device includes: Pollen supply system (1) is used to realize pollen storage, anti-clogging delivery and atomization; A cylindrical pollination chamber (2) is located below the pollen supply system (1) and is connected to the pollen supply system (1). An outer cavity (3) is fitted outside the pollination cavity (2). The top of the outer cavity (3) is sealed to the pollination cavity (2), and the bottom is located below the pollination cavity (2) and is provided with a flexible sealing opening (31). A vortex ring generating system (4) is installed on the outer cavity (3) and communicates with the inner cavity of the pollination cavity (2); A pollination shell (5) is installed on the outside of the pollen supply system (1), pollination cavity (2), outer cavity (3), and vortex ring generating system (4). The bottom of the pollination shell (5) is open for the installation of a flexible sealing opening (31), and the side is provided with a side wall opening for the operation of the vortex ring generating system (4). The vortex ring generating system (4) includes two sets of special nozzles, namely an upper clockwise nozzle group (41) and a lower counterclockwise nozzle group (42). The upper clockwise nozzle group (41) and the lower counterclockwise nozzle group (42) are arranged around the side wall of the pollination chamber (1) and located at the upper part of the pollination chamber (1). The upper clockwise nozzle group (41) and the lower counterclockwise nozzle group (42) are staggered in the vertical direction.
2. The blueberry vortex pollination device according to claim 1, characterized in that: The pollen supply system (1) includes: The pollen box (11) has a pollen inlet (12) and an air pressure port (13) at the top and a conical outlet (14) at the bottom. A spherical mixing chamber (15) is set on the lower side of the pollen box (11) and connected to the conical discharge port (14). A spiral rod (16) is rotatably arranged coaxially inside the conical discharge port (14). The bottom end of the spiral rod (16) extends to the center of the spherical mixing chamber (15) and is fixedly connected to a fan (17) to prevent pollen from bridging and clogging at the conical discharge port (14). Two gas nozzles (18) are horizontally arranged at the center of the spherical mixing chamber (15). The axes of the two gas nozzles (18) are arranged in a staggered central symmetrical manner. The fan (17) is located on the jet path of the two gas nozzles (18).
3. The blueberry vortex pollination device according to claim 1 or 2, characterized in that: The special nozzle includes an ellipsoidal rear cavity (411) and a cylindrical nozzle (412) connected in sequence. The inner wall of the cylindrical nozzle (412) is provided with an integrally formed spiral guide vane (413). The spiral direction of the spiral guide vane (413) of the upper clockwise nozzle group (41) is clockwise, and the spiral direction of the spiral guide vane (413) of the lower counterclockwise nozzle group (42) is counterclockwise.
4. The blueberry vortex pollination device according to claim 3, characterized in that: The axis of the upper clockwise nozzle group (41) is tangentially 38° clockwise to the radial direction of the pollination chamber (2), and the axis of the lower counterclockwise nozzle group (42) is tangentially 38° counterclockwise to the radial direction of the pollination chamber (2).
5. The blueberry vortex pollination device according to claim 4, characterized in that: The major axis of the ellipsoidal rear cavity (411) is arranged along the airflow direction.
6. The blueberry vortex pollination device according to claim 4 or 5, characterized in that: The spiral guide vane (413) has a spiral angle of 30°-60°.
7. The blueberry vortex pollination device according to claim 6, characterized in that: The inner diameter of the cylindrical nozzle (412) is smaller than the minor axis length of the ellipsoidal rear cavity (411).
8. The blueberry vortex pollination device according to claim 7, characterized in that: The pollen box (11) is cylindrical, and its conical discharge port (14) at the bottom extends into the spherical mixing chamber (15).
9. The blueberry vortex pollination device according to claim 8, characterized in that: The fan (17) has no fewer than six blades.
10. The blueberry vortex pollination device according to claim 9, characterized in that: The flexible sealing opening (31) is a truncated quadrangular shape and is made of silicone material.