Pollen extraction device for fruit tree pollination

Abstract

The application relates to the technical field of plant pollen extraction, and discloses a pollen extraction device for fruit tree pollination, which comprises a screening machine, a conveying belt assembly and a screening assembly which are sequentially connected, the conveying belt assembly comprises a conveying belt mounting frame, a sealing cover is arranged on the conveying belt mounting frame, the device further comprises a pre-drying assembly, the pre-drying assembly comprises a negative pressure exhaust fan and a drying assembly, and the negative pressure exhaust fan and the drying assembly are connected through a conveying pipe; the screening assembly comprises a drying separator and a fine selection separator, and further comprises a variable frequency fan; the variable frequency fan is connected with the drying separator and the fine selection separator through a pollen pipe, the pre-drying assembly installed on the conveying belt assembly removes dust in the air while preheating the flower buds, the flower buds are broken through the collision plate of the drying separator, and the air in the drying separator is extracted and dehumidified while the flower buds are collided.

Description

Technical Field

[0001] This invention relates to the field of plant pollen extraction technology, specifically to a pollen extraction device for fruit tree pollination. Background Technology

[0002] In fruit tree production, adequate pollination is a crucial step in fruit development and quality improvement. Only well-pollinated fruit can grow into pollution-free, high-quality fruit. Traditional fruit tree production mainly relies on bees and wind pollination. However, due to factors such as climate, environment, and the characteristics of the fruit trees themselves, the pollination effect is relatively poor. For example, although kiwifruit is a wind-pollinated flower and can be pollinated by wind, its pollen grains are large and float a short distance in the air, making wind pollination ineffective. Insect pollination or artificial pollination is necessary. However, neither the female nor male flowers of kiwifruit have nectar glands, making them less attractive to bees. Therefore, a large number of bees are needed for bee pollination. Furthermore, although developed countries often use bee rental methods during the fruit tree flowering period... While bee pollination is used in orchards, artificial pollination is necessary when bee populations are insufficient or lacking, or when bee activity is low due to continuous rainy days. Furthermore, bee pollination requires specific environmental conditions. For example, plants with the same flowering period as kiwifruit (such as clover or vetch) should not be present in or near the orchard during pollination. Orchards with different flowering periods nearby should not have their fruit trees treated for pests; otherwise, bee activity will be affected, leading to insufficient pollination during the flowering period. Poor pollination not only causes significant fruit drop but also hinders normal fruit development, severely impacting yield and fruit quality. Therefore, artificial pollination is a crucial technique for ensuring adequate pollination of fruit trees. The prerequisite for artificial pollination is obtaining the necessary pollen.

[0003] Traditional pollen collection involves manually extracting anthers from open or semi-open male flowers using toothbrushes, scissors, and tweezers. The anthers are then spread out on paper and allowed to dry naturally or in an oven at a certain temperature. The anthers open, releasing pollen, which is then sieved through a fine sieve. This pollen separation, extraction, and processing method is not only time-consuming, labor-intensive, and inefficient, but it also cannot meet the pollen demand of large-scale fruit tree cultivation.

[0004] With the rapid development of large-scale planting, multiple pollen collection devices have emerged. For example, patent application number 200810162087.7 ​​discloses a pine pollen collector that achieves harvesting without damaging the tree. However, this application suffers from low efficiency and cannot meet the needs of rapid large-scale development. Patent application number CN201110112822.5 discloses a combined cyclone separator and collection device and a method for separating and collecting pollen based on this device. The cyclone separator effectively improves the efficiency of pollen separation and extraction. However, this application is affected by the dryness or wetness of the flowers. When the flowers are wet, the separation effect is poor. At the same time, there is a lot of dust in the pollen that cannot be effectively removed. Summary of the Invention

[0005] The purpose of this invention is to provide a pollen extraction device for fruit tree pollination that uses a pre-drying component installed on a conveyor belt assembly to remove dust from the air while preheating the flower buds, and then uses a collision plate in a drying separator to break up the flower buds. While colliding with the flower buds, the air in the drying separator is extracted and dehumidified, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pollen extraction device for fruit tree pollination, comprising a screening machine, a conveyor belt assembly, and a sieving assembly connected in sequence. The conveyor belt assembly includes a conveyor belt mounting frame with a sealing cover, and also includes a pre-drying assembly, which includes a negative pressure exhaust fan and a drying assembly connected by a conveying pipe. The sieving assembly includes a drying separator and a fine separation separator, and also includes a variable frequency fan, which connects the drying separator and the fine separation separator through a pollen pipe.

[0007] Furthermore, the screening machine is connected to the conveyor belt assembly via a feeding pipe. A conveyor belt mounting groove is provided at the top of the conveyor belt mounting frame. The cross-section of the conveyor belt mounting groove is concave. A conveyor belt motor is provided on the outside of the conveyor belt mounting groove. An active roller is provided between the opposite surfaces of the inner wall of the conveyor belt mounting groove. The active roller is connected to the conveyor belt motor via a coupling. At least one driven roller is also provided between the opposite surfaces of the inner wall of the conveyor belt mounting groove. A conveyor belt is provided on the outer surfaces of the active roller and the driven roller. The feeding pipe is connected to one end of the sealing cover near the conveyor belt motor. A baffle is provided on the side of the sealing cover near the conveyor belt motor. The gap between the baffle and the conveyor belt forms the feed inlet.

[0008] Furthermore, a through hole connecting the inside and outside is provided on the outer side of the sealing cover, and one end of the conveying pipe is sealed to the through hole on the outer side of the sealing cover. A breathable diaphragm is provided at the connection between the conveying pipe and the sealing cover. The negative pressure exhaust fan is screwed to the conveyor belt mounting groove through a fixed bracket. The air inlet of the negative pressure exhaust fan is connected to the conveying pipe, and the air outlet of the negative pressure exhaust fan is provided with a conveying pipe connected to the drying component. The drying component is located at the bottom of the conveyor belt mounting groove.

[0009] Furthermore, the drying assembly includes a square-shaped drying shell, a drying base plate at the bottom of the drying shell, a drying air inlet communicating with the inside and outside in the middle of the drying base plate, a conveying pipe at the drying air inlet, a drying hot air inlet that cooperates with the drying shell at the bottom of the conveyor belt mounting groove, and a dust removal assembly inside the drying shell.

[0010] Furthermore, the dust removal assembly includes multiple parallel-arranged anode plates, with multiple cathode rods between every two anode plates. Each cathode rod contains an electric heating wire and has an elliptical cross-section. The angle between the cathode rod and the anode plate is 30-60 degrees. The area between the cathode rod and the anode plate forms an air passage, which is S-shaped. A discharge cone is provided on the end face of the opposite side of the anode plate. The assembly also includes a fixing strip positioned between the anode plate and the cathode rod, and a power supply mechanism located at one end of the anode plate.

[0011] Furthermore, the dryer separator includes a separation barrel, which includes an upper separation barrel in the shape of a cylinder and a lower separation barrel in the shape of a cone. A dehumidification component is provided on the outside of the upper separation barrel, and an impurity outlet is provided at the bottom of the lower separation barrel. A fixing ring is provided on the outside of the impurity outlet. The separator also includes an impurity storage box, which is square in shape. An impurity inlet communicating with the inside and outside is opened at the top of the impurity storage box. Multiple connecting rods extend downward from the bottom of the impurity outlet, and an impurity reflux baffle is provided at the bottom of the connecting rods. The impurity reflux baffle is spherical in shape.

[0012] Furthermore, the top of the upper separation tank has a discharge port connecting the inside and outside, and a discharge pipe is provided at the discharge port. The end of the discharge pipe away from the upper separation tank is connected to the pollen pipe through a flange. The end of the discharge pipe away from the pollen pipe extends to the junction of the upper and lower separation tanks. It also includes multiple flower bud collision plates, which are connected to the dehumidification component. The flower bud collision plates are located on the inner wall of the upper separation tank and are arranged circumferentially at intervals. It also includes a drying feed pipe, which is connected to the conveyor belt component through a blower.

[0013] Furthermore, the flower bud collision plate includes a collision shell with a circular cross-section. The collision shell includes an arc-shaped segment and a plate-shaped segment. A sealing plate is provided at one end of the arc-shaped segment and the plate-shaped segment. A return air membrane is provided at the end of the arc-shaped segment and the plate-shaped segment away from the sealing plate. It also includes a partition plate that divides the cavity enclosed by the collision shell into an intake chamber and a return air chamber. It also includes an air intake grille located on the side of the arc-shaped segment of the intake chamber. A breathable membrane is provided on the end face of the air intake grille. An intake pipe is provided on the end face of the plate-shaped segment of the intake chamber and is connected to the dehumidification component. A return air pipe is provided on the end face of the plate-shaped segment of the return air chamber and is connected to the dehumidification component.

[0014] Furthermore, the dehumidification assembly includes an evaporator, which is located on the outer side of the discharge pipe and arranged circumferentially. A rotary joint is provided at the top of the evaporator, and the evaporator is connected to the rotary joint. A condensing pipe is provided on the outer side of the rotary joint. The assembly also includes a condenser, which is located on the outer side of the upper separation tank and connected to the flower bud collision plate. The condenser is connected to the evaporator through the condensing pipe. A magnetic coupling is provided at the top of the rotary joint, and the magnetic coupling is screwed to the rotary joint. A transmission assembly is provided at the top of the magnetic coupling.

[0015] Furthermore, the transmission assembly includes an isolation housing screwed onto the lower end face of the top plate of the upper separation barrel, a drive motor located at the top of the upper separation barrel, an output end of the drive motor connected to a drive gear via a pin, and a driven gear arranged coaxially with the discharge pipe and meshing with the drive gear. The driven gear rotates with the discharge pipe via a bearing and is in an inverted L-shape. The lower end of the driven gear is connected to a magnetic coupling. The fine separator includes a fine separation barrel with a fine separation discharge pipe at the top and a fine separation feed pipe. One end of the fine separation feed pipe is connected to a variable frequency fan, and the other end is connected to the fine separation barrel. A second impurity storage box is located at the bottom of the fine separation barrel.

[0016] Furthermore, the drying assembly also includes an air oscillator, which contains a heating module. The cathode rod is hollow and S-shaped, with fixing gaskets at both ends. The cathode rod is connected to the air oscillator.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The air in the sealed space enclosed by the sealing cover is extracted by the negative pressure exhaust fan of the conveyor belt assembly and then sent into the drying assembly. The air is heated, and the dust removal assembly removes the dust in the air. This achieves the purpose of dust removal and preheating drying of the flower buds during the process of transporting them by the conveyor belt assembly.

[0019] 2. The air inside the upper separation chamber is dried by the condenser of the dehumidification component, and then heated and kept warm by the evaporator to ensure that the ambient temperature of the pollen and flower buds is stable at about 45 degrees Celsius, which facilitates the detachment of pollen from the flower buds. At the same time, the rotation of the evaporator replenishes the energy of the air vortex inside the upper separation chamber to ensure the normal separation process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the pollen extraction device of the present invention;

[0021] Figure 2 This is a front view of the screening component of the present invention;

[0022] Figure 3 For the present invention Figure 2 AA diagram;

[0023] Figure 4 This is an isometric view of the screening component of the present invention;

[0024] Figure 5 This is an isometric view of the evaporator of the present invention;

[0025] Figure 6This is a front view of the transmission component of the present invention;

[0026] Figure 7 For the present invention Figure 6 A schematic diagram of a BB (Baby Window) diagram;

[0027] Figure 8 This is an exploded view of the transmission component of the present invention;

[0028] Figure 9 This is a front view of the flower bud collision plate of the present invention;

[0029] Figure 10 This is a cross-sectional view of the flower bud collision plate of the present invention;

[0030] Figure 11 These are upper and lower isometric views of the conveyor belt assembly of the present invention;

[0031] Figure 12 These are left and right isometric views of the conveyor belt assembly of the present invention;

[0032] Figure 13 This is a side view of the conveyor belt assembly of the present invention;

[0033] Figure 14 This is an isometric view of the drying assembly of the present invention;

[0034] Figure 15 This is a cross-sectional view of the drying component of the present invention;

[0035] Figure 16 This is a front view of the dust removal component of the present invention;

[0036] Figure 17 For the present invention Figure 16 A magnified view of part A;

[0037] Figure 18 This is an isometric view of the dust removal component of the present invention;

[0038] Figure 19 This is a schematic diagram of a cathode rod according to another embodiment of the present invention.

[0039] In the diagram: 1. Screening machine; 2. Fine separator; 201. Fine separator discharge pipe; 202. Fine separator feed pipe; 203. Fine separator barrel; 3. Drying separator; 302. Impurity outlet; 303. Lower separator barrel; 304. Discharge pipe; 305. Flower bud collision plate; 306. Drying feed pipe; 307. Upper separator barrel; 308. Evaporator; 309. Drive motor; 310. Condensation pipe; 311. Magnetic coupling; 312. Rotary joint; 313. Transmission assembly; 314. Drive gear; 315. Isolation shell; 316. Driven gear; 317. Air inlet grille; 318. Suction chamber; 319. Suction pipe; 320. Return pipe; 321. Return chamber; 322. 1. Return air membrane; 4. Variable frequency fan; 5. Conveyor belt assembly; 501. Sealing cover; 502. Conveyor belt; 503. Conveyor belt mounting groove; 504. Conveyor belt mounting frame; 505. Conveyor belt motor; 506. Negative pressure exhaust fan; 507. Conveying pipe; 508. Baffle; 509. Drying assembly; 510. Drying base plate; 511. Drying air inlet; 512. Drying outer shell; 513. Dust removal assembly; 514. Anode plate; 515. Cathode rod; 516. Discharge cone; 517. Fixing strip; 518. Air duct; 519. Power supply mechanism; 520. Fixing gasket; 521. Vibration damper; 6. Pollen tube; 7. Second impurity storage box; 8. Impurity temporary storage box; 9. Dehumidification assembly. Detailed Implementation

[0040] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0041] In one implementation, such as Figure 1 The pollen extraction device for fruit tree pollination shown includes a screening machine 1, a conveyor belt assembly 5, and a sieving assembly connected in sequence. The conveyor belt assembly 5 includes a conveyor belt mounting frame 504 with a sealing cover 501 on it, and also includes a pre-drying assembly. The pre-drying assembly includes a negative pressure exhaust fan 506 and a drying assembly 509, which are connected by a conveying pipe 507. The sieving assembly includes a drying separator 3 and a fine separator 2, and also includes a variable frequency fan 4, which connects the drying separator 3 and the fine separator 2 through a pollen pipe 6.

[0042] In this embodiment, the collected flowers are crushed and screened by the screening machine 1 to remove branches, impurities, leaves and petals. The pollen and flower buds with impurities removed are sent into the conveyor belt assembly 5 by the set conveyor. During the process of the flower buds and pollen being sent into the screening assembly by the conveyor belt assembly 5, the air in the sealed space enclosed by the sealing cover 501 is extracted by the negative pressure exhaust fan 506 and sent into the drying assembly 509 to heat the air to about 45 degrees. The heated air is then sent back into the sealing cover 501 to preheat and dry the flower buds and pollen. After the preheating and drying process, the flower buds and pollen are sent into the screening assembly for drying and selection.

[0043] In one implementation, such as Figure 11-13 As shown, the screening machine 1 is connected to the conveyor belt assembly 5 through a feeding pipe. A conveyor belt mounting groove 503 is provided at the top of the conveyor belt mounting frame 504. The cross-section of the conveyor belt mounting groove 503 is concave. A conveyor belt motor 505 is provided on the outside of the conveyor belt mounting groove 503. An active roller is provided between the opposite surfaces of the inner wall of the conveyor belt mounting groove 503. The active roller is connected to the conveyor belt motor 505 through a coupling. At least one driven roller is also provided between the opposite surfaces of the inner wall of the conveyor belt mounting groove 503. A conveyor belt 502 is provided on the outer side of the active roller and the driven roller. The feeding pipe is connected to one end of the sealing cover 501 near the conveyor belt motor 505. A baffle 508 is provided on the side of the sealing cover 501 near the conveyor belt motor 505. The gap between the baffle 508 and the conveyor belt 502 forms the feed inlet.

[0044] The outer side of the sealing cover 501 has a through hole connecting the inside and outside. One end of the conveying pipe 507 is sealed to the through hole on the outer side of the sealing cover 501. A breathable diaphragm is provided at the connection between the conveying pipe 507 and the sealing cover 501. The negative pressure exhaust fan 506 is screwed to the conveyor belt mounting groove 503 through a fixed bracket. The air inlet of the negative pressure exhaust fan 506 is connected to the conveying pipe 507. The air outlet of the negative pressure exhaust fan 506 is provided with a conveying pipe connected to the drying component 509. The drying component 509 is located at the bottom of the conveyor belt mounting groove 503.

[0045] In this embodiment, a conveyor belt mounting groove 503 is provided at the top of the conveyor belt mounting frame 504. The cross-section of the conveyor belt mounting groove 503 is concave. The conveying pipe is connected to one end of the sealing cover 501 near the conveyor belt motor 505. It can be understood that the conveyor belt 502 is wrapped by the conveyor belt mounting groove 503 and the sealing cover 501, thereby forming a relatively closed space. At the same time, a baffle 508 is provided on the side of the sealing cover 501 near the conveyor belt motor 505. The gap between the baffle 508 and the conveyor belt 502 forms the feed inlet. It can be understood that the baffle 508 is provided on the side of the sealing cover 501 near the screening machine 1, thereby dividing the cavity between the conveyor belt 502 and the sealing cover 501 into two parts. The air coming from the screening machine 1 is blocked by the baffle 508, thereby increasing the airflow speed when it enters the interior of the sealing cover 501 through the gap between the baffle 508 and the conveyor belt 502, which facilitates the lifting of pollen and dust in the flower buds.

[0046] Meanwhile, the negative pressure exhaust fan 506 is connected to the air inside the sealing cover 501 through the conveying pipe 507, and the distance between the negative pressure exhaust fan 506 and the baffle 508 is relatively far. After the pollen blown by the accelerated airflow settles, most of it falls onto the conveyor belt 502 corresponding to the location of the conveying pipe 507 and is sent into the screening component by the conveyor belt 502. The dust in the air is drawn from inside the sealing cover 501 into the drying component 509 for drying and dust removal under the action of the negative pressure exhaust fan 506, and then sent back to the sealing cover 501.

[0047] During operation, the screening machine 1 sends the screened pollen and flower buds onto the conveyor belt 502 of the conveyor belt assembly 5. As the air passage narrows rapidly, the air velocity increases, making it easier to lift dust. The pollen and flower buds settle onto the conveyor belt 502. The air containing more dust is drawn out of the cavity surrounded by the sealing cover 501 by the negative pressure exhaust fan 506 through the conveying pipe 507. Then, the dusty air is sent into the drying assembly 509 for heating and dust removal. The treated air is then sent back into the sealing cover 501 for preheating and drying of the pollen and flower buds.

[0048] In one implementation, such as Figure 14-18 As shown, the drying assembly 509 includes a drying outer shell 512 with a square cross-section, a drying base plate 510 at the bottom of the drying outer shell 512, a drying air inlet 511 communicating with the inside and outside of the drying base plate 510 in the middle, a conveying pipe 507 at the drying air inlet 511, a drying hot air inlet that cooperates with the drying outer shell 512 at the bottom of the conveyor belt mounting groove 503, and a dust removal assembly 513 inside the drying outer shell 512.

[0049] The dust removal assembly 513 includes multiple parallel anode plates 514, with multiple cathode rods 515 between every two anode plates 514. Each cathode rod 515 contains an electric heating wire and has an elliptical cross-section. The angle between the cathode rod 515 and the anode plate 514 is 30-60 degrees. The area between the cathode rod 515 and the anode plate 514 forms an air passage 518, which is S-shaped. A discharge cone 516 is provided on the end face of the opposite side of the anode plate 514. The assembly also includes a fixing strip 517, which is located between the anode plate 514 and the cathode rod 515. Finally, the assembly includes a power supply mechanism 519, which is located at one end of the anode plate 514.

[0050] In this embodiment, the drying assembly 509 includes a square-shaped drying outer shell 512. A drying base plate 510 is provided at the bottom of the drying outer shell 512. A drying air inlet 511 communicating with the inside and outside is opened in the middle of the drying base plate 510. A conveying pipe 507 is provided at the drying air inlet 511. A drying hot air inlet that cooperates with the drying outer shell 512 is opened at the bottom of the conveyor belt mounting groove 503. A dust removal assembly 513 is provided inside the drying outer shell 512. It can be understood that dust-laden air is sent into the drying outer shell 512 through the conveying pipe 507, and the dust removal assembly 513 removes the dust. At the same time, due to the dust removal assembly... The component 513 includes multiple parallel anode plates 514, with multiple cathode rods 515 between each pair of anode plates 514. Each cathode rod 515 has an electric heating wire inside, so that when the cathode rod 515 is performing dust removal, it heats the air through the electric heating wire inside, raising the air temperature to about 45 degrees Celsius. At the same time, the bottom of the conveyor belt mounting groove 503 has a drying hot air inlet that cooperates with the drying outer shell 512. The conveyor belt 502 is made of breathable material, so that the gas processed by the drying component 509 rises from the bottom of the conveyor belt 502 and preheats and dries the flower buds at the top of the conveyor belt 502.

[0051] During operation, the negative pressure exhaust fan 506 sends dust-laden air into the drying component 509 through the conveying pipe 507. The dust removal component 513 of the drying component 509 operates, and dust is adsorbed onto the surface of the anode plate 514 or cathode rod 515 under the action of the anode plate 514 and cathode rod 515 of the dust removal component 513. At the same time, since the angle between the cathode rod 515 and the anode plate 514 is 30-60 degrees, the area between the cathode rod 515 and the anode plate 514 forms an air passage 518. The air passage 518 is S-shaped, which causes the gas to collide with the anode plate 514 or cathode rod 515 during the upward process, making it difficult for dust to accumulate on the anode plate 514 or cathode rod 515. At the same time, the air is heated by the electric heating wire in the cathode rod 515, so as to remove dust from the air and heat the air at the same time, thereby achieving the purpose of removing dust from the air transporting pollen and preheating the pollen and flower buds at the same time.

[0052] In another embodiment, the drying assembly 509 further includes an air oscillator, which contains a heating module. The cathode rod 515 is hollow and S-shaped. Both ends of the cathode rod 515 are provided with fixing gaskets 520. The cathode rod 515 is connected to the air oscillator.

[0053] In this embodiment, the air in the air oscillator is heated by the heating module inside the air oscillator, and then a closed loop is formed in the sealed cathode rod 515. Under the action of the blower, the airflow oscillates naturally. During the oscillation process, the airflow exchanges heat with the outside air and drives the cathode rod 515 to vibrate slightly, thereby achieving the purpose of heating the outside air while removing dust from the surface of the cathode rod 515.

[0054] In one implementation, such as Figure 2-10 As shown, the dryer separator 3 includes a separation barrel, which includes an upper separation barrel 307, which is cylindrical, and a lower separation barrel 303, which is conical. A dehumidification component 9 is provided on the outside of the upper separation barrel 307, and an impurity outlet 302 is provided at the bottom of the lower separation barrel 303. A fixing ring is provided on the outside of the impurity outlet 302. The separator also includes an impurity storage box 8, which is square. An impurity inlet communicating with the inside and outside is opened at the top of the impurity storage box 8. Multiple connecting rods extend downward from the bottom of the impurity outlet 302. An impurity reflux baffle is provided at the bottom of the connecting rods. The impurity reflux baffle is spherical.

[0055] The upper separating barrel 307 has a discharge port at its top that connects the inside and outside. A discharge pipe 304 is provided at the discharge port. The end of the discharge pipe 304 away from the upper separating barrel 307 is connected to the pollen pipe 6 through a flange. The end of the discharge pipe 304 away from the pollen pipe 6 extends to the junction of the upper separating barrel 307 and the lower separating barrel 303. It also includes multiple flower bud collision plates 305. The flower bud collision plates 305 are connected to the dehumidification component 9. The flower bud collision plates 305 are provided on the inner wall of the upper separating barrel 307 and are arranged at intervals around the circumference. It also includes a drying feed pipe 306. The drying feed pipe 306 is connected to the conveyor belt component 5 through a blower.

[0056] In this embodiment, the drying separator 3 includes a drying feed pipe 306, which is connected to the conveyor belt assembly 5 via a blower. The drying feed pipe 306 is located on the outer side of the upper separation barrel 307 and away from the lower separation barrel 303, so that outside air can enter the upper separation barrel 307 and rotate at high speed against the inner wall of the upper separation barrel 307. At the same time, multiple flower bud collision plates 305 are provided on the inner wall of the upper separation barrel 307 to facilitate the separation of pollen from the flower buds. Then, the gas mixed with different impurities moves in a spiral shape along the inner wall of the upper separation barrel 307. Since different impurities have different masses, impurities larger than a certain weight are thrown towards the inner wall under the action of centrifugal force and enter the impurity storage box 8 through the lower separation barrel 303 under the action of gravity. The rotating airflow contracts and flows towards the center in the upper separation barrel 307, forming a secondary vortex upward and being discharged through the pollen pipe 6.

[0057] To prevent impurities from being drawn out of the impurity storage box 8 under the action of the secondary eddy current, multiple connecting rods extend downward from the bottom end of the impurity outlet 302. An impurity return baffle is provided at the bottom end of the connecting rod. The impurity return baffle is spherical, so that impurities are not easy to accumulate at the top of the impurity return baffle when entering the impurity storage box 8.

[0058] The flower bud collision plate 305 includes a collision shell with a circular cross-section. The collision shell includes an arc-shaped segment and a plate-shaped segment. A sealing plate is provided at one end of the arc-shaped segment and the plate-shaped segment. A return air membrane 322 is provided at the end of the arc-shaped segment and the plate-shaped segment away from the sealing plate. It also includes a partition plate that divides the cavity surrounded by the collision shell into an intake chamber 318 and a return air chamber 321. It also includes an air intake grille 317, which is located on the side of the arc-shaped segment of the intake chamber 318. A breathable membrane is provided on the end face of the air intake grille 317. An intake pipe 319 is provided on the end face of the plate-shaped segment of the intake chamber 318 and is connected to the dehumidification component 9. A return air pipe 320 is provided on the end face of the plate-shaped segment of the return air chamber 321 and is connected to the dehumidification component 9.

[0059] The dehumidification assembly 9 includes an evaporator 308, which is located on the outer side of the discharge pipe 304 and arranged circumferentially. A rotary joint 312 is provided at the top of the evaporator 308, and the evaporator 308 is connected to the rotary joint 312. A condensing pipe 310 is provided on the outer side of the rotary joint 312. The assembly also includes a condenser, which is located on the outer side of the upper separation tank 307 and is connected to the flower bud collision plate 305. The condenser is connected to the evaporator 308 through the condensing pipe 310. A magnetic coupling 311 is provided at the top of the rotary joint 312, and the magnetic coupling 311 is screwed to the rotary joint 312. A transmission assembly 313 is provided at the top of the magnetic coupling 311.

[0060] The transmission assembly 313 includes an isolation housing 315, which is screwed to the lower end face of the top plate of the upper separation barrel 307. It also includes a drive motor 309, which is located at the top of the upper separation barrel 307. The output end of the drive motor 309 is connected to a drive gear 314 via a pin. It also includes a driven gear 316, which is coaxially arranged with the discharge pipe 304. The driven gear 316 meshes with the drive gear 314. The driven gear 316 is rotatably engaged with the discharge pipe 304 via a bearing. The driven gear 316 is in an inverted L-shape. The lower end of the driven gear 316 is connected to a magnetic coupling 311.

[0061] In this embodiment, the angle between the flower bud collision plate 305 and the tangent of the inner wall surface of the upper separation barrel 307 is 10-45 degrees. Preferably, the angle between the flower bud collision plate 305 and the tangent of the inner wall surface of the upper separation barrel 307 is 20 degrees, 30 degrees or 45 degrees, so as to minimize the impact on the vortex airflow.

[0062] To compensate for the loss of airflow velocity, a drive motor 309 is installed at the top of the upper separation tank 307. The output end of the drive motor 309 is connected to a drive gear 314 via a pin, and also includes a driven gear 316. The driven gear 316 is coaxially arranged with the discharge pipe 304 and meshes with the drive gear 314. The driven gear 316 is rotatably engaged with the discharge pipe 304 via a bearing. The driven gear 316 is in an inverted L-shape, and its lower end is connected to a magnetic coupling 311. The bottom end of the magnetic coupling 311 is provided with a rotary joint 312. The evaporator 308 is connected to the return... The adapter 312 is connected, and the evaporator 308 is plate-shaped and evenly spaced. The drive motor 309 drives the drive gear 314 to rotate, and the drive gear 314 drives the driven gear 316 to rotate. Since the driven gear 316 is connected to the magnetic coupling 311, it drives the magnetic coupling 311 to rotate, and then drives the rotary joint 312 to rotate through the magnetic coupling 311. This allows the plate-shaped evaporator 308 to rotate around the discharge pipe. The airflow generated when the evaporator 308 rotates is the same as the airflow of the outside air entering the upper separation tank 307 through the drying feed pipe 306.

[0063] Meanwhile, in order to heat the air inside the upper separation tank 307 and maintain the air temperature in the range of 45-50°C, the air in the upper separation tank 307 is heated by the dehumidification component 9. The dehumidification component 9 includes an evaporator 308, a condensation pipe 310, a condenser, and a compressor. The condensate expands in volume and absorbs heat in the condenser, and then releases the heat along the evaporator 308 under the drive of the compressor, thereby heating the air in the upper separation tank 307. Thus, the evaporator 308 heats the air while driving the air to rotate, which in turn replenishes the energy for the vortex motion of the air in the upper separation tank 307.

[0064] Meanwhile, since the flower bud collision plate 305 includes a collision shell, the cross-section of the flower bud collision plate 305 is circular. The collision shell includes an arc section and a plate section. A sealing plate is provided at one end of the arc section and the plate section. A return air membrane 322 is provided at the end of the arc section and the plate section away from the sealing plate. It also includes a partition plate, which divides the cavity surrounded by the collision shell into an air intake chamber 318 and a return air chamber 321. It also includes an air intake grille 317, which is provided on the side of the arc section of the air intake chamber 318. A breathable membrane is provided on the end face of the air intake grille 317. An air intake pipe 319 is provided on the end face of the plate section of the air intake chamber 318. The air intake pipe 319 is connected to the dehumidification component 9. A return air pipe 320 is provided on the end face of the plate section of the return air chamber 321. The return air pipe 320 is connected to the dehumidification component 9.

[0065] This allows the air inside the upper separation barrel 307 to enter the intake chamber 318 through the intake grille 317, and then be sent into the condenser along the intake pipe 319. When the air meets the condenser, condensation occurs. The condensed air returns to the return chamber 321 through the return pipe 320 and is then sent back into the upper separation barrel 307 through the return membrane 322, thereby achieving the purpose of drying the air inside the upper separation barrel 307.

[0066] The fine separator 2 includes a fine separator barrel 203, a fine separator discharge pipe 201 at the top of the fine separator barrel 203, and a fine separator feed pipe 202. One end of the fine separator feed pipe 202 is connected to the variable frequency fan 4, and the other end of the fine separator feed pipe 202 is connected to the fine separator barrel 203. A second impurity storage box 7 is provided at the bottom of the fine separator barrel 203.

[0067] In this embodiment, pollen gas carrying a small amount of impurities enters the purification tank 203 through the purification feed pipe 202 and flows tangentially into the purification tank 203. It moves in a spiral shape along the inner wall of the purification tank 203. Since the impurities and pollen have different masses, the heavier impurities are thrown towards the inner wall under the action of centrifugal force, and fall into the second impurity storage box from the impurity discharge port set in the purification separator 2 under the action of gravity. The rotating airflow contracts and flows towards the center in the purification tank 203, forming a secondary vortex upward and being sent out through the purification discharge pipe 201.

[0068] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pollen extraction device for fruit tree pollination, comprising a screening machine, a conveyor belt assembly, and a sieving assembly connected in sequence, characterized in that: The conveyor belt assembly includes a conveyor belt mounting frame with a sealing cover, and also includes a pre-drying assembly, which includes a negative pressure exhaust fan and a drying assembly, connected by a conveying pipe; the screening assembly includes a drying separator and a fine separation separator, and also includes a variable frequency fan, which connects the drying separator and the fine separation separator through a pollen pipe. The screening machine is connected to the conveyor belt assembly through a feeding pipe. A conveyor belt mounting groove is provided at the top of the conveyor belt mounting frame. The cross-section of the conveyor belt mounting groove is concave. A conveyor belt motor is provided on the outside of the conveyor belt mounting groove. An active roller is provided between the opposite surfaces of the inner wall of the conveyor belt mounting groove. The active roller is connected to the conveyor belt motor through a coupling. At least one driven roller is also provided between the opposite surfaces of the inner wall of the conveyor belt mounting groove. A conveyor belt is provided on the outer side of the active roller and the driven roller. The feeding pipe is connected to one end of the sealing cover near the conveyor belt motor. A baffle is provided on the side of the sealing cover near the conveyor belt motor. The gap between the baffle and the conveyor belt forms the feed inlet. The outer side of the sealing cover has a through hole connecting the inside and outside. One end of the conveying pipe is sealed to the through hole on the outer side of the sealing cover. A breathable diaphragm is provided at the connection between the conveying pipe and the sealing cover. The negative pressure exhaust fan is screwed to the conveyor belt mounting groove through a fixed bracket. The air inlet of the negative pressure exhaust fan is connected to the conveying pipe. The air outlet of the negative pressure exhaust fan is provided with a conveying pipe connected to the drying component. The drying component is located at the bottom of the conveyor belt mounting groove.

2. The pollen extraction device for fruit tree pollination according to claim 1, characterized in that: The drying assembly includes a square-shaped drying shell, a drying base plate at the bottom of the drying shell, a drying air inlet connecting the inside and outside in the middle of the drying base plate, a conveying pipe at the drying air inlet, a drying hot air inlet that cooperates with the drying shell at the bottom of the conveyor belt mounting groove, and a dust removal assembly inside the drying shell.

3. The pollen extraction device for fruit tree pollination according to claim 2, characterized in that: The dust removal assembly includes multiple parallel anode plates, with multiple cathode rods between every two anode plates. Each cathode rod contains an electric heating wire and has an elliptical cross-section. The angle between the cathode rod and the anode plate is 30-60 degrees. The area between the cathode rod and the anode plate forms an air passage in an S-shape. A discharge cone is provided on the end face of the opposite side of the anode plate. The assembly also includes a fixing strip positioned between the anode plate and the cathode rod, and a power supply mechanism located at one end of the anode plate.

4. The pollen extraction device for fruit tree pollination according to claim 1, characterized in that: The drying separator includes a separation barrel, which includes an upper separation barrel in the shape of a cylinder and a lower separation barrel in the shape of a cone. A dehumidification component is provided on the outside of the upper separation barrel, and a sludge outlet is provided at the bottom of the lower separation barrel. A fixing ring is provided on the outside of the sludge outlet. The separator also includes a sludge storage box, which is square in shape. An sludge inlet communicating with the inside and outside is opened at the top of the sludge storage box. Multiple connecting rods extend downward from the bottom of the sludge outlet, and a spherical sludge return baffle is provided at the bottom of the connecting rods.

5. The pollen extraction device for fruit tree pollination according to claim 4, characterized in that: The upper separating barrel has a discharge port at its top that connects the inside and outside. A discharge pipe is provided at the discharge port. The end of the discharge pipe away from the upper separating barrel is connected to the pollen pipe through a flange. The end of the discharge pipe away from the pollen pipe extends to the junction of the upper separating barrel and the lower separating barrel. It also includes multiple flower bud collision plates, which are connected to the dehumidification component. The flower bud collision plates are located on the inner wall of the upper separating barrel and are arranged at intervals around the circumference. It also includes a drying feed pipe, which is connected to the conveyor belt component through a blower.

6. The pollen extraction device for fruit tree pollination according to claim 5, characterized in that: The flower bud collision plate includes a collision shell with a circular cross-section. The collision shell includes an arc-shaped segment and a plate-shaped segment. A sealing plate is provided at one end of the arc-shaped segment and the plate-shaped segment. A return air membrane is provided at the end of the arc-shaped segment and the plate-shaped segment away from the sealing plate. It also includes a partition plate that divides the cavity enclosed by the collision shell into an intake chamber and a return air chamber. It also includes an air intake grille located on the side of the arc-shaped segment of the intake chamber. A breathable membrane is provided on the end face of the air intake grille. An intake pipe is provided on the end face of the plate-shaped segment of the intake chamber and is connected to the dehumidification component. A return air pipe is provided on the end face of the plate-shaped segment of the return air chamber and is connected to the dehumidification component.

7. The pollen extraction device for fruit tree pollination according to claim 6, characterized in that: The dehumidification assembly includes an evaporator, which is located on the outer side of the discharge pipe and arranged circumferentially. A rotary joint is provided at the top of the evaporator, and the evaporator is connected to the rotary joint. A condensing pipe is provided on the outer side of the rotary joint. The assembly also includes a condenser, which is located on the outer side of the upper separation tank and connected to the flower bud collision plate. The condenser is connected to the evaporator through the condensing pipe. A magnetic coupling is provided at the top of the rotary joint, and the magnetic coupling is screwed to the rotary joint. A transmission assembly is provided at the top of the magnetic coupling.

8. The pollen extraction device for fruit tree pollination according to claim 7, characterized in that: The transmission assembly includes an isolation shell screwed to the lower end face of the top plate of the upper separation barrel, a drive motor located at the top of the upper separation barrel, an output end of the drive motor connected to a drive gear via a pin, and a driven gear arranged coaxially with the discharge pipe and meshing with the drive gear. The driven gear rotates with the discharge pipe via a bearing and is in an inverted L-shape. The lower end of the driven gear is connected to a magnetic coupling. The fine separator includes a fine separation barrel with a fine separation discharge pipe at the top and a fine separation feed pipe. One end of the fine separation feed pipe is connected to a variable frequency fan, and the other end is connected to the fine separation barrel. A second impurity storage tank is located at the bottom of the fine separation barrel.

Images