Hybrid rice targeted pollination device

Abstract

The application provides a hybrid rice directional pollination device, and relates to the field of rice. The device comprises a trolley, a mounting frame and an air suction pump. The top of the mounting frame is provided with an outer cover and an iron shell. The top of the trolley is fixedly connected with a box body away from the outer cover. The bottom of the outer cover is rotatably connected with a driving gear. The driving gear is fixedly connected with a plurality of elastic rods inside. The driving gear and the mounting frame are provided with an extension assembly. The top of the outer cover is fixedly connected with a square vertical pipe. The device has multiple implementation modes, which can meet the needs of multiple directional pollination modes, reduce the participation of staff, reduce physical input, and protect the rice male parent plant without breaking it according to the experience of the staff. The multiple elastic rods continuously knock the rice male parent plant, ensuring that the pollen on the rice male parent plant is fully shaken off and collected, and the rice male parent plant can continue to grow and generate pollen.

Description

Technical Field

[0001] This invention relates to a pollination device, specifically a directional pollination device for hybrid rice, belonging to the field of rice technology. Background Technology

[0002] Hybrid rice seeds are the material basis for hybrid rice production. However, rice is a self-pollinating plant, and its natural hybridization rate in the natural environment is generally only 0.2% to 0.3%. To maintain the hybrid vigor of the seeds, currently, only "artificial" pollination can be used to ensure sufficient and uniform pollination, increase the cross-pollination rate, and improve seed yield and quality. Rice pollination lasts only 7 to 10 days, with only about 2 to 4 hours of flowering time per day, so pollination must be completed within this limited time.

[0003] In hybrid rice breeding experiments, artificial pollination is used. Although artificial pollination yields high-quality seeds and high yield per unit area, it is labor-intensive, and workers may break the male parent plants during pollination, which can affect subsequent pollination work. Summary of the Invention

[0004] To solve the above problems, the present invention is implemented through the following technical solution: a hybrid rice directional pollination device, comprising a trolley, a mounting frame, and an air pump. The mounting frame has an outer cover and an iron shell on its top. A box is fixedly connected to the top of the trolley on the side away from the outer cover. A drive gear is rotatably connected to the bottom of the outer cover. Multiple elastic rods are fixedly connected inside the drive gear. The rotating elastic rods have good elasticity, preventing damage to the male rice parent plant when the elastic rods strike it. A telescopic component is provided between the drive gear and the mounting frame. A square vertical tube is fixedly connected to the top of the outer cover. An impeller is rotatably connected inside the vertical pipe, and a transmission assembly is installed between the impeller and the drive gear. A directional telescopic pipe is fixedly connected to the top of the square vertical pipe. A three-way air guide assembly is installed between the air inlet end of the air pump and the telescopic assembly and the directional telescopic pipe. A second three-way valve is fixedly connected to the air outlet end of the air pump. A control assembly is installed between the normally closed end of the second three-way valve and the housing. A drainage assembly is installed between the housing and the iron shell. A damper, a filter screen, and an inner pipe are installed between the drainage assembly and the housing. A powder spraying assembly is installed between the normally open end of the second three-way valve and the iron shell. A magnetic shell and a circular filter screen are installed on the outside of the iron shell.

[0005] Preferably, the mounting bracket is fixedly installed on the top of the trolley. The three-way air guide assembly includes a first three-way valve and an air guide component. The first three-way valve is fixedly connected to the top of the directional telescopic tube. The air guide component is fixedly connected between the normally closed end of the first three-way valve and the telescopic assembly. The air guide component is U-shaped. An air extraction bend is fixedly connected between the first three-way valve and the air inlet end of the air extraction pump. The working air extraction pump extracts air through the air extraction bend and the first three-way valve, and extracts air from inside the outer cover through the directional telescopic tube and the square vertical tube.

[0006] Preferably, the telescopic assembly includes a mounting ring and two piston cylinders. Each piston cylinder has a T-shaped piston rod inside. A spring is installed between the T-shaped piston rod and the piston cylinder. The elastically deformable spring limits the falling speed of the T-shaped piston rod, preventing the drive gear and outer cover from moving down and damaging the rice. The bottom end of the T-shaped piston rod passes through the piston cylinder. A connecting plate is fixedly connected to the bottom end of the T-shaped piston rod. The connecting plate is fixedly connected to the mounting ring. The mounting ring is rotatably connected to the bottom of the drive gear. When the T-shaped piston rod falls, the mounting ring moves down synchronously. The drive gear and outer cover set at the top of the mounting ring also lose their limiting position and fall.

[0007] Preferably, the two ends of the air guide are fixedly connected to two piston cylinders respectively, and an exhaust valve is fixedly connected to one side of the top of the piston cylinder. The two piston cylinders are fixedly connected to both sides of the mounting bracket and fixedly connected to the mounting bracket.

[0008] Preferably, the transmission assembly includes a gearbox, with one end of the impeller extending out of the interior of a square vertical tube and fixedly connected to the input end of the gearbox. The impeller transmits rotational force to the input end of the gearbox, and the rotational force is decelerated and redirected by the gearbox before being transmitted to the transmission rod. The gearbox is fixedly connected to the top of the outer cover, and the output end of the gearbox is fixedly connected to the transmission rod. An electromagnet is fixedly sleeved on the bottom outer side of the transmission rod, and a transmission gear is rotatably sleeved on the outer side of the electromagnet. The transmission gear meshes with the drive gear.

[0009] Preferably, the powder spraying assembly includes a mounting tube, which is rotatably connected to the inside of the mounting frame. Two electromagnet frames are sleeved on the outside of the mounting tube and are fixedly connected to the mounting frame. An air guide bend is provided on one side of the mounting tube and is fixedly connected between the mounting frame and the normally open end of the second three-way valve.

[0010] Preferably, the powder spraying assembly also includes a powder discharge pipe, which is fixedly connected between the iron shell and the mounting pipe. One end of the powder discharge pipe is fixedly connected to a flared pipe, which is located inside the mounting pipe. The figure-eight flared pipe serves to collect airflow, gathering the airflow entering the mounting pipe into the powder discharge pipe. The iron shell is located on one side of the magnet shell. Both the iron shell and the magnet shell have elastic sheets fixedly connected to their bottoms. When the elastic sheets come into contact with the rice parent plant, they undergo elastic deformation, sealing the pollination part of the rice parent plant without damaging it. A circular filter screen is fixedly connected to the top of the iron shell.

[0011] Preferably, the control component includes a connecting pipe, which is fixedly connected between the housing and the normally closed end of the second three-way valve. A circular telescopic tube is fixedly connected to the bottom of the connecting pipe, and a solenoid valve is fixedly connected to the bottom of the circular telescopic tube. A pressure plate is fixedly sleeved on the outside of the solenoid valve. The circular telescopic tube, the pressure plate, and the solenoid valve are all located inside the housing.

[0012] Preferably, a water inlet valve is fixedly connected to one side of the bottom of the housing, and the drainage assembly includes a third three-way valve. The third three-way valve is located on the other side of the bottom of the housing. A water pipe is fixedly connected to the normally open end of the third three-way valve. A guide bend is rotatably connected to one end of the water pipe. The guide bend passes through the mounting frame and is rotatably connected to the mounting frame. One end of the guide bend is located inside the powder discharge pipe. A nozzle is fixedly connected to one end of the guide bend. The water pipe is located inside one side of the iron shell.

[0013] Preferably, a vertical pipe is fixedly connected between the third three-way valve and the housing, a damper is fixedly connected to the top of the third three-way valve, a filter screen is fixedly connected to the top of the damper, an inner tube is sleeved on the outside of the filter screen, and the inner tube is fixedly connected to the top of the inner cavity of the vertical pipe.

[0014] This invention provides a directional pollination device for hybrid rice, which has the following beneficial effects:

[0015] 1. This hybrid rice directional pollination device uses an air pump to draw pollen-laden airflow through an air extraction bend, a first three-way valve, a directional telescopic pipe, a square vertical pipe, and an outer casing. This airflow is then discharged into the iron shell through a second three-way valve, a guide bend, an installation pipe, and a pollen discharge pipe. At this point, the iron shell and the magnetic shell form a circular seal. The pollen-laden airflow fills the circular seal, allowing the pollen to contact the pollination site of the female rice plant, thus completing the directional pollination process. This reduces the involvement of workers and their physical labor. Furthermore, workers no longer need to break the male rice plant based on their own experience to protect it. Multiple elastic rods continuously tap the male rice plant, ensuring that the pollen is fully shaken off and collected. The male rice plant can also continue to grow and produce pollen, extending the cycle of artificial directional pollination.

[0016] 2. This hybrid rice directional pollination device uses a circular filter to seal the top of the iron and magnetic shells. Airflow passes through the circular filter and exits into the circular seal formed by the iron and magnetic shells. Simultaneously, the circular filter traps pollen within the sealed area. Rotation of the elastic rod strikes the pollen discharge pipe, causing vibration in the iron shell and circular filter, increasing the falling speed of the trapped pollen and ensuring it is fully distributed to the pollination site of the rice female plant.

[0017] 3. In this hybrid rice directional pollination device, the water pressure inside the box is increased, and water is supplied to the nozzle. The water is atomized by the nozzle and sprayed onto the pollination site of the rice female plant, adhering the pollen to the pollination site of the rice female plant, ensuring stable and efficient pollination, and improving the success rate of directional pollination. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2This is a schematic diagram of the structure of the air extraction bend of the present invention;

[0020] Figure 3 This is a partial structural schematic diagram of the air guide component of the present invention;

[0021] Figure 4 This is a schematic diagram of the elastic rod of the present invention;

[0022] Figure 5 This is a schematic diagram of the air guide bend of the present invention;

[0023] Figure 6 This is a partial structural schematic diagram of the powder discharge pipe of the present invention;

[0024] Figure 7 This is a partial structural diagram of the inner tube of the present invention;

[0025] Figure 8 This is a schematic diagram of the structure of the pressure plate of the present invention;

[0026] Figure 9 For the present invention Figure 2 A schematic diagram of the C section structure.

[0027] Explanation of reference numerals in the attached drawings: 1. Trolley; 2. Mounting bracket; 3. Piston cylinder; 4. T-shaped piston rod; 5. Spring; 6. Connecting plate; 7. Mounting ring; 8. Drive gear; 9. Outer cover; 10. Square vertical tube; 11. Directional telescopic tube; 12. First three-way valve; 13. Air guide component; 14. Elastic rod; 15. Impeller; 16. Gearbox; 17. Transmission rod; 18. Transmission gear; 19. Electromagnet; 20. Suction bend; 21. Suction pump; 22. Second three-way valve; 23. Air guide. 24. Installation pipe; 25. Flared pipe; 26. Powder discharge pipe; 27. Iron shell; 28. Magnet shell; 29. ​​Circular filter screen; 30. Electromagnet frame; 31. Guide bend; 32. Water pipe; 33. Nozzle; 34. Elastic sheet; 35. Box body; 36. Connecting pipe; 37. Circular telescopic pipe; 38. Pressure plate; 39. Solenoid valve; 40. Water inlet valve; 41. Third three-way valve; 42. Vertical pipe; 43. Damper; 44. Filter screen; 45. Inner pipe; 46. Exhaust valve. Detailed Implementation

[0028] This invention provides a device for directional pollination of hybrid rice.

[0029] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9The system includes a trolley 1, a mounting frame 2, and a vacuum pump 21. The mounting frame 2 has an outer cover 9 and a metal shell 27 on its top. A housing 35 is fixedly connected to the top of the trolley 1 on the side away from the outer cover 9. A drive gear 8 is rotatably connected to the bottom of the outer cover 9. Multiple elastic rods 14 are fixedly connected inside the drive gear 8. A telescopic assembly is provided between the drive gear 8 and the mounting frame 2. A square vertical tube 10 is fixedly connected to the top of the outer cover 9. An impeller 15 is rotatably connected inside the square vertical tube 10. A transmission assembly is provided between the impeller 15 and the drive gear 8. A square vertical tube 10 is fixedly connected to the top of the square vertical tube 10. A three-way air guide assembly is provided between the air inlet end of the air pump 21 and the telescopic assembly and the directional telescopic pipe 11. A second three-way valve 22 is fixedly connected to the air outlet end of the air pump 21. A control assembly is provided between the normally closed end of the second three-way valve 22 and the housing 35. A drainage assembly is provided between the housing 35 and the iron shell 27. A damper 43, a filter screen 44 and an inner pipe 45 are provided between the drainage assembly and the housing 35. A powder spraying assembly is provided between the normally open end of the second three-way valve 22 and the iron shell 27. A magnetic shell 28 and a circular filter screen 29 are provided on the outside of the iron shell 27.

[0030] Specifically:

[0031] Mounting frame 2 is fixedly installed on the top of trolley 1. Trolley 1, which can move, supports mounting frame 2 for various structures. Mounting frame 2 can be pulled to allow the directional pollination device in this invention to move as needed, moving the directional pollination device to one side of the rice sample.

[0032] Because the mounting tube 24 is rotatably connected inside the mounting frame 2, it can rotate as needed. Since the powder discharge pipe 26 is fixedly connected between the iron shell 27 and the mounting tube 24, the position of the iron shell 27 can be adjusted via the powder discharge pipe 26, allowing it to move around the rice mother plant. Then, the electromagnet frame 30 is controlled to operate, using magnetic force to fix the position of the mounting tube 24. Because the electromagnet frame 30 is fixedly connected to the mounting frame 2, the mounting tube 24 is fixed inside the mounting frame 2 and cannot rotate. This restricts the position of the iron shell 27 installed by the mounting tube 24 through the powder discharge pipe 26, completing the adjustment of the position of the iron shell 27 corresponding to the pollination site of the rice mother plant.

[0033] After the staff removed the seal from the pollination part of the rice mother plant, they placed it inside the iron shell 27. Then, they placed the magnetic shell 28 on one side of the iron shell 27. The magnetic shell 28 was attracted and fixed together with the iron shell 27 by magnetic force, thus sealing and protecting the pollination part of the rice mother plant.

[0034] Both the iron shell 27 and the magnetic shell 28 have elastic sheets 34 fixedly connected to their bottoms. After the elastic sheets 34 come into contact with the rice mother plant, they undergo elastic deformation, sealing the pollination part of the rice mother plant without damaging it.

[0035] Then, the telescopic assembly is controlled to work. The telescopic assembly includes a mounting ring 7 and two piston cylinders 3. At this time, the exhaust valve 46 fixedly connected to one side of the top of the piston cylinder 3 is working, and the air pressure inside the piston cylinder 3 is restored to the outside. Both piston cylinders 3 are equipped with T-shaped piston rods 4. The T-shaped piston rods 4 lose the negative pressure limit and fall under the action of gravity. A spring 5 is installed between the T-shaped piston rod 4 and the piston cylinder 3. The elastically deformable spring 5 limits the falling speed of the T-shaped piston rod 4 to prevent the drive gear 8 and the outer cover 9 from moving down and causing damage to the rice. Furthermore, the bottom end of the T-shaped piston rod 4 passes through the piston cylinder 3, and a connecting plate 6 is fixedly connected to the bottom end of the T-shaped piston rod 4. The connecting plate 6 is fixedly connected to the mounting ring 7. Therefore, when the T-shaped piston rod 4 falls, the mounting ring 7 moves down synchronously. The drive gear 8 and the outer cover 9 set at the top of the mounting ring 7 also lose their limit and fall. The outer cover 9 and the drive gear 8 finally fall and fit onto the top of the outer side of the rice sample, covering the top of the outer side of the male rice plant, preventing the pollen of the male rice plant from spreading widely during the directional pollination, avoiding affecting other rice samples, and completing the preparation work for directional pollination.

[0036] Subsequently, the air pump 21 and the three-way air guide assembly are controlled to work. The three-way air guide assembly includes a first three-way valve 12 and an air guide component 13. An air extraction bend 20 is fixedly connected between the first three-way valve 12 and the air inlet end of the air pump 21. The working air pump 21 draws air through the air extraction bend 20 and the first three-way valve 12. The first three-way valve 12 is fixedly connected to the top of the directional telescopic pipe 11. Therefore, the air inside the outer cover 9 is drawn out through the directional telescopic pipe 11 and the square vertical pipe 10. While the air is being drawn in, the airflow drives the impeller 15 inside the square vertical tube 10 to rotate. One end of the impeller 15 extends out of the square vertical tube 10 and is fixedly connected to the input end of the gearbox 16. Therefore, the impeller 15 transmits rotational force to the input end of the gearbox 16. A transmission rod 17 is fixedly connected to the output end of the gearbox 16. The rotational force is decelerated and redirected by the gearbox 16 and then transmitted to the transmission rod 17. An electromagnet 19 is fixedly sleeved on the bottom outer side of the transmission rod 17. A transmission gear 18 is rotatably sleeved on the outer side of the electromagnet 19. At this time, the electromagnet 19 works with the transmission gear. The components are fixed together by adsorption. The transmission rod 17 drives the transmission gear 18 to rotate through the electromagnet 19. The rotating transmission gear 18 meshes with the drive gear 8, which rotates. The rotating drive gear 8 drives multiple internal elastic rods 14 to rotate. The multiple elastic rods 14 have good elasticity, which avoids damage to the rice parent plant when the elastic rods 14 hit it. The pollen on the rice parent plant is shaken off when it is hit, so that pollination can be carried out without breaking the rice parent plant, thus reducing economic losses.

[0037] A gas guide bend 23 is provided on one side of the mounting pipe 24. The mounting pipe 24 is connected to the gas guide bend 23. The gas guide bend 23 is fixedly connected between the mounting bracket 2 and the normally open end of the second three-way valve 22. Therefore, the air pump 21 injects gas into the mounting pipe 24 through the second three-way valve 22 and the gas guide bend 23. One end of the pollen discharge pipe 26 is fixedly connected to a flared pipe 25. The flared pipe 25, which is set in a figure-eight shape, serves to collect the airflow. The flared pipe 25 is set inside the mounting pipe 24. The flared pipe 25 collects the airflow entering the mounting pipe 24 into the pollen discharge pipe 26, preventing pollen from being trapped inside the mounting pipe 24. The pollen is then sprayed into the iron shell 27 through the pollen discharge pipe 26.

[0038] Therefore, the air pump 21 draws pollen-laden airflow through the air extraction bend 20, the first three-way valve 12, the directional telescopic pipe 11, the square vertical pipe 10, and the outer cover 9. This airflow is then discharged into the iron shell 27 through the second three-way valve 22, the air guide bend 23, the installation pipe 24, and the pollen discharge pipe 26. At this point, the iron shell 27 and the magnetic shell 28 form a circular seal. The pollen-laden airflow fills the circular seal, allowing the pollen to contact the pollination site of the rice female plant, thus completing the directional pollination. This reduces the involvement of staff and their physical exertion. Furthermore, staff do not need to break the rice male plant based on their own experience to protect it. Multiple elastic rods 14 continuously tap the rice male plant, ensuring that the pollen on the rice male plant is fully shaken off and collected. The rice male plant can also continue to grow and produce pollen, extending the cycle of artificial directional pollination.

[0039] Furthermore, the circular filter screen 29 is fixedly connected to the top of the iron shell 27. At this time, the circular filter screen 29 seals the top of the iron shell 27 and the magnetic shell 28. The airflow passes through the circular filter screen 29 and exits into the circular seal formed by the iron shell 27 and the magnetic shell 28. At the same time, the circular filter screen 29 traps pollen in the airflow inside the circular seal. The rotation of the elastic rod 14 will strike the pollen discharge pipe 26, causing the iron shell 27 and the circular filter screen 29 to vibrate, increasing the falling speed of the pollen trapped by the circular filter screen 29, so that the pollen is fully sprinkled onto the pollination site of the rice female plant.

[0040] Subsequently, the electromagnet 19 and exhaust valve 46 are stopped, removing the fixation between the transmission gear 18 and the transmission rod 17. At this time, the rotation of the transmission rod 17 will not drive the drive gear 8 to rotate, and the outer cover 9 will not rotate during the upward movement. The exhaust valve 46 is closed, and the piston cylinder 3 is in a sealed state. At the same time, the first three-way valve 12 and the second three-way valve 22 are operated. The normally closed end of the first three-way valve 12 is opened, and the two ends of the air guide 13 are fixedly connected to the two piston cylinders 3 respectively. The two piston cylinders 3 are fixedly connected to both sides of the mounting bracket 2 and fixedly connected to the mounting bracket 2. At this time, the air pump 21 draws air from the inside of the piston cylinder 3 through the air suction bend 20, the first three-way valve 12, and the air guide 13. The air pressure inside the piston cylinder 3 decreases, and the spring 5 resets under the action of negative pressure. The reset spring 5 drives the mounting ring 7 to move upward through the connecting plate 6. The moving mounting ring 7 drives the drive gear 8 and the outer cover 9 to move upward, causing the outer cover 9 to reset and exposing the iron shell 27 and the magnet shell 28.

[0041] After the iron shell 27 and the magnetic shell 28 are exposed, remove the magnetic shell 28 from one side of the iron shell 27, remove the rice mother plant from inside the iron shell 27, and then move the directional pollination device to the next rice sample planting position. The directional pollination work is then completely completed, and the directional pollination device is returned to its initial state.

[0042] When the first three-way valve 12 and the second three-way valve 22 are in operation, the normally closed end of the second three-way valve 22 is opened, and the connecting pipe 36 is fixedly connected between the housing 35 and the normally closed end of the second three-way valve 22. Therefore, the airflow discharged by the air pump 21 through the second three-way valve 22 enters the interior of the connecting pipe 36.

[0043] Example 1:

[0044] When there is water inside the housing 35, the air pump 21 discharges air through the second three-way valve 22 into the connecting pipe 36. A circular telescopic pipe 37 is fixedly connected to the bottom of the connecting pipe 36. At this time, the solenoid valve 39 fixedly connected to the bottom of the circular telescopic pipe 37 is in a closed state. The circular telescopic pipe 37 extends and pushes the pressure plate 38 fixedly sleeved on the outside of the solenoid valve 39 to move down. The circular telescopic pipe 37, the pressure plate 38 and the solenoid valve 39 are all set inside the housing 35, so that the pressure plate 38 slides down inside the housing 35. The moving pressure plate 38 presses down the water inside the housing 35.

[0045] The water pressure inside the housing 35 increases, and a vertical pipe 42 is fixedly connected between the third three-way valve 41 and the housing 35. The increase in water pressure causes water to flow into the vertical pipe 42. The damper 43 is fixedly connected to the top of the third three-way valve 41, and the filter screen 44 is fixedly connected to the top of the damper 43. At this time, the water presses the filter screen 44, causing the damper 43 to contract. The inner pipe 45 is fixedly connected to the top of the inner cavity of the vertical pipe 42. The inner pipe 45 is sleeved on the outside of the filter screen 44. The filter screen 44 moves down and leaves the inside of the inner pipe 45. The inside of the vertical pipe 42 is connected to the inside of the housing 35. At this time, water enters the inside of the third three-way valve 41 through the vertical pipe 42.

[0046] The normally open end of the third three-way valve 41 is fixedly connected to a water pipe 32. Water enters the water pipe 32 through the third three-way valve 41. One end of the water pipe 32 is rotatably connected to a guide bend 31. The guide bend 31 passes through the mounting frame 2 and is rotatably connected to the mounting frame 2. Therefore, the guide bend 31 will not be affected during the synchronous rotation of the mounting pipe 24. One end of the guide bend 31 is located inside the powder discharge pipe 26, and the other end of the guide bend 31 is fixedly connected to a nozzle 33. The water pipe 32 and the guide bend 31 work together to connect the third three-way valve 41 and the nozzle 33, supplying water to the nozzle 33. The water pipe 32 is located inside the iron shell 27 on one side. After the water is atomized by the nozzle 33, it is sprayed out and falls onto the pollination site of the rice female plant, adhering the pollen to the pollination site of the rice female plant, ensuring stable and efficient pollination, and improving the success rate of directional pollination of the directional pollination device.

[0047] Example 2:

[0048] When the elastic rod 14 taps the rice parent plant, the air pump 21 draws pollen-laden air through the air extraction bend 20, the first three-way valve 12, the directional telescopic pipe 11, the square vertical pipe 10, and the outer cover 9. At this time, the normally closed end of the second three-way valve 22 opens, the solenoid valve 39 opens, and the normally closed end of the third three-way valve 41 opens. The pollen-laden air drawn by the air pump 21 is then discharged into the box 35 through the second three-way valve 22, the connecting pipe 36, the circular telescopic pipe 37, and the solenoid valve 39. If there is no water stored inside the box 35, it serves to store the pollen.

[0049] The pressure exerted on the filter screen 44 by the pollen-containing airflow is relatively low. The pressure on the filter screen 44 is insufficient to overcome the elastic force of the damper 43. At this time, the filter screen 44 will not leave the inner tube 45. The filter screen 44 serves to filter the airflow and retain the pollen in the housing 35. After being filtered by the filter screen 44, the airflow exits through the vertical pipe 42, the third three-way valve 41, and the normally closed end of the third three-way valve 41. The collected pollen is stored inside the housing 35. At this point, the directional pollination device collects pollen, and can collect pollen produced by multiple rice male parent plants.

[0050] After the pollen collection is completed, a water inlet valve 40 is fixedly connected to one side of the bottom of the box 35. The prepared liquid is poured into the box 35 through the water inlet valve 40 to mix the liquid with the pollen.

[0051] Once the pollen-containing liquid is prepared, the control solenoid valve 39 is closed, and the normally closed end of the third three-way valve 41 is closed. At this time, the air pump 21 operates and extracts gas through the second three-way valve 22 and the connecting pipe 36, which is then pumped into the circular telescopic tube 37. The circular telescopic tube 37 extends and pushes the pressure plate 38 downward, and the downward-moving pressure plate 38 applies pressure to the liquid.

[0052] The pressure exerted by the liquid on the filter screen 44 overcomes the elastic force of the damper 43, causing the filter screen 44 to move downwards and leave the inner tube 45. At this time, the pollen-containing liquid flows through the third three-way valve 41, water pipe 32, and guide bend 31 to the nozzle 33, where it is sprayed out. This allows the collection of pollen from the male rice parent plant and the pollination of the female rice parent plant to be carried out separately, enabling the directional pollination device to meet the directional pollination needs of both the male and female rice parent plants, thus improving the flexibility of its use.

[0053] Directional pollination devices have multiple implementation methods and can adapt to the needs of various directional pollination methods.

[0054] In addition, during the operation of the directional pollination device, without the magnetic shell 28 contacting the iron shell 27, the directional pollination device is controlled to supply airflow into the iron shell 27. The airflow blows and cleans the pollen discharge pipe 26 and the inside of the iron shell 27, preventing pollen from remaining inside the iron shell 27 and affecting the pollination of the next rice mother plant.

[0055] In addition, the mounting ring 7 is rotatably connected to the bottom of the drive gear 8. The mounting ring 7 will not affect the rotation of the drive gear 8, and the outer cover 9 will not be affected by the drive gear 8.

[0056] In addition, the directional telescopic tube 11 has a telescopic function, which ensures the air extraction and guidance function without affecting the up-and-down movement of the outer cover 9. The gearbox 16 is fixedly connected to the top of the outer cover 9, so the gearbox 16 and the outer cover 9 move up and down synchronously. The movement of the outer cover 9 will not affect the gearbox 16's direction and speed change operation. The gearbox 16 controls the rotation speed of the elastic rod 14 to prevent the elastic rod 14 from rotating too fast and damaging the rice sample.

Claims

1. A hybrid rice targeted pollination device, comprising a trolley (1), a mounting frame (2) and a suction pump (21), characterized in that: The top of the mounting frame (2) is provided with an outer cover (9) and an iron shell (27), the top of the trolley (1) is fixedly connected with a box (35) away from the outer cover (9), the bottom of the outer cover (9) is rotatably connected with a drive gear (8), a plurality of elastic rods (14) are fixedly connected inside the drive gear (8), a telescopic assembly is arranged between the drive gear (8) and the mounting frame (2), a square vertical pipe (10) is fixedly connected to the top of the outer cover (9), an impeller (15) is rotatably connected inside the square vertical pipe (10), a transmission assembly is arranged between the impeller (15) and the drive gear (8), a directional telescopic pipe (11) is fixedly connected to the top of the square vertical pipe (10), a three-way air guide assembly is arranged between the air inlet end of the air pump (21) and the telescopic assembly and the directional telescopic pipe (11), a second three-way valve (22) is fixedly connected to the air outlet end of the air pump (21), a control assembly is arranged between the normally closed end of the second three-way valve (22) and the box (35), a drainage assembly is arranged between the box (35) and the iron shell (27), a damper (43), a filter screen (44) and an inner pipe (45) are arranged between the drainage assembly and the box (35), a powder spraying assembly is arranged between the normally open end of the second three-way valve (22) and the iron shell (27), and a magnet shell (28) and a circular filter screen (29) are arranged outside the iron shell (27).

2. The device for targeted pollination of hybrid rice according to claim 1, characterized in that: The mounting frame (2) is fixedly installed on the top of the trolley (1), the three-way air guide assembly comprises a first three-way valve (12) and an air guide piece (13), the first three-way valve (12) is fixedly connected to the top of the directional telescopic pipe (11), the air guide piece (13) is fixedly connected between the normally closed end of the first three-way valve (12) and the telescopic assembly, the air guide piece (13) is arranged in a U shape, and the air suction elbow (20) is fixedly connected between the first three-way valve (12) and the air inlet end of the air pump (21).

3. The device for targeted pollination of hybrid rice according to claim 2, characterized in that: The telescopic assembly comprises a mounting ring (7) and two piston cylinders (3), T-shaped piston rods (4) are arranged inside the two piston cylinders (3), springs (5) are arranged between the T-shaped piston rods (4) and the piston cylinders (3), the T-shaped piston rods (4) penetrate through the piston cylinders (3) from the bottom ends, connecting plates (6) are fixedly connected to the bottom ends of the T-shaped piston rods (4), the connecting plates (6) are fixedly connected with the mounting ring (7), and the mounting ring (7) is rotatably connected to the bottom of the drive gear (8).

4. The device for targeted pollination of hybrid rice according to claim 3, characterized in that: The air guide piece (13) is fixedly communicated with the two piston cylinders (3) at both ends, an exhaust valve (46) is fixedly connected to one side of the top of the piston cylinder (3), and the two piston cylinders (3) are fixedly connected to the two sides of the mounting frame (2) and fixedly connected with the mounting frame (2).

5. The hybrid rice targeted pollination device according to claim 1, characterized in that: The transmission assembly comprises a gear box (16), one end of the impeller (15) extends out of the inside of the square vertical pipe (10) and is fixedly connected with the input end of the gear box (16), the gear box (16) is fixedly connected to the top of the outer cover (9), the output end of the gear box (16) is fixedly connected with a transmission rod (17), the outer bottom of the transmission rod (17) is fixedly sleeved with an electromagnet (19), the outer side of the electromagnet (19) is rotatably sleeved with a transmission gear (18), and the transmission gear (18) is engaged with the driving gear (8).

6. The device for targeted pollination of hybrid rice according to claim 1, characterized in that: The powder spraying assembly comprises a mounting pipe (24) rotatably connected to the inside of the mounting frame (2), the outside of the mounting pipe (24) is sleeved with two electromagnet frames (30), the electromagnet frames (30) are fixedly connected with the mounting frame (2), one side of the mounting pipe (24) is provided with a gas guide elbow (23), and the gas guide elbow (23) is fixedly connected between the mounting frame (2) and the normally open end of the second three-way valve (22).

7. The device for targeted pollination of hybrid rice according to claim 6, characterized in that: The powder spraying assembly further comprises a powder discharging pipe (26) fixedly connected between the iron shell (27) and the mounting pipe (24), one end of the powder discharging pipe (26) is fixedly connected with a flared pipe (25), the flared pipe (25) is arranged in the inside of the mounting pipe (24), the iron shell (27) is arranged on one side of the magnet shell (28), the iron shell (27) and the magnet shell (28) are fixedly connected with elastic sheets (34) at the bottom, and the circular filter screen (29) is fixedly connected to the top of the iron shell (27).

8. The device for targeted pollination of hybrid rice according to claim 1, characterized in that: The control assembly comprises a connecting pipeline (36) fixedly connected between the box body (35) and the normally closed end of the second three-way valve (22), the bottom of the connecting pipeline (36) is fixedly connected with a circular telescopic pipe (37), the bottom of the circular telescopic pipe (37) is fixedly connected with an electromagnetic valve (39), the outside of the electromagnetic valve (39) is fixedly sleeved with a pressing plate (38), and the circular telescopic pipe (37), the pressing plate (38) and the electromagnetic valve (39) are all arranged in the inside of the box body (35).

9. The hybrid rice targeted pollination device according to claim 1, characterized in that: One side of the bottom of the box body (35) is fixedly connected with a water inlet valve (40), the drainage assembly comprises a third three-way valve (41), the third three-way valve (41) is arranged on the other side of the bottom of the box body (35), the normally open end of the third three-way valve (41) is fixedly connected with a water pipe (32), one end of the water pipe (32) is rotatably connected with a flow guide elbow (31), the flow guide elbow (31) penetrates through and is rotatably connected with the mounting frame (2), one end of the flow guide elbow (31) is arranged in the inside of the powder discharging pipe (26), one end of the flow guide elbow (31) is fixedly connected with a spray head (33), and the water pipe (32) is arranged on one side in the inside of the iron shell (27).

10. The device for targeted pollination of hybrid rice according to claim 9, characterized in that: A vertical pipe (42) is fixedly connected between the third three-way valve (41) and the box body (35), a damper (43) is fixedly connected to the top of the third three-way valve (41), a filter screen (44) is fixedly connected to the top of the damper (43), an inner pipe (45) is sleeved on the outside of the filter screen (44), and the inner pipe (45) is fixedly connected to the top of the inner cavity of the vertical pipe (42).

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