CN113973549A - Distribution pipe type pneumatic quantitative seed sowing device and quantitative seed sowing method thereof - Google Patents
Distribution pipe type pneumatic quantitative seed sowing device and quantitative seed sowing method thereof Download PDFInfo
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- CN113973549A CN113973549A CN202111248745.6A CN202111248745A CN113973549A CN 113973549 A CN113973549 A CN 113973549A CN 202111248745 A CN202111248745 A CN 202111248745A CN 113973549 A CN113973549 A CN 113973549A
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- 238000009331 sowing Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000004140 cleaning Methods 0.000 claims description 30
- 230000005540 biological transmission Effects 0.000 claims description 28
- 238000009423 ventilation Methods 0.000 claims description 26
- 241000721671 Ludwigia Species 0.000 claims description 24
- 238000007789 sealing Methods 0.000 claims description 13
- 230000007704 transition Effects 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 3
- 238000010899 nucleation Methods 0.000 abstract description 12
- 238000009434 installation Methods 0.000 abstract description 2
- 238000005273 aeration Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/20—Parts of seeders for conducting and depositing seed
Abstract
The invention discloses a distributing pipe type pneumatic quantitative seed sowing device and a quantitative seed sowing method thereof. The positive-pressure seed feeding position angle is variable by matching the fixed height and the inclination angle change of the seed conveying pipe through the two dividing plates with the adjustable positive-pressure seed feeding position angle and the plurality of hollow pipes between the two dividing plates; the hollow pipes are arranged on the dividing plate in an inserting mode, and the seeding requirements at different intervals can be met by changing the installation phase angle of the hollow pipes on the dividing plate; for different kinds of seeds, the suction nozzles with different sizes are only needed to be replaced for seeding, and the purpose of one device is achieved.
Description
Technical Field
The invention belongs to the technical field of agricultural machinery, and particularly relates to a distributed pipe type pneumatic quantitative seed sowing device and a quantitative seed sowing method thereof.
Background
The seeding apparatus is one of the key parts of the seeding machine, and the seeding precision, the uniformity, the emergence rate of seeds and the like are directly influenced by the working performance of the seeding apparatus. The seed metering devices are various in types and mainly comprise mechanical seed metering devices and pneumatic seed metering devices, the mechanical seed metering devices are simple in structure, but poor in seeding precision, seeds are easily damaged due to extrusion, and the pneumatic seed metering devices are not strict in requirements on sizes and shapes of the seeds and small in seed damage rate.
In the prior art, a pneumatic roller type seed sowing device adsorbs seeds on roller type holes by utilizing negative pressure, and then the seeds are uniformly scattered outwards from the type holes under the blowing of positive pressure airflow, so that the structure is simple, the sowing speed is high, the sowing speed is uniform, but the hole type of the seed sowing device is fixed, and only single seeds can be sowed. Moreover, the seed sowing distance and the positive pressure seed feeding position angle of the seed sowing device can not be changed, the function is single, the roller can only be integrally replaced if damaged, and the replacement cost is high.
Disclosure of Invention
The invention aims to provide a distributing pipe type pneumatic quantitative seed sowing device and a quantitative seed sowing method thereof aiming at the defects of the prior art.
The invention discloses a distributing pipe type pneumatic quantitative seed sowing device which comprises a rack, a seed box, a ventilation chamber, an index plate, a spring, a side plate, a cam block, a transmission shaft, a hollow pipe, a suction nozzle, a seed conveying pipe and a seed cleaning brush main body plate, wherein the rack is provided with a seed box; two ends of the transmission shaft are supported on two bearing blocks through bearings, and the bearing blocks are fixed on the rack; the two dividing plates are connected on the transmission shaft through keys; an annular sealing ring is arranged between the central hole of the dividing plate and the transmission shaft; the dividing plate is provided with a plurality of mounting holes which are uniformly distributed along the circumferential direction, and the hole walls of the mounting holes are provided with bulges; both ends of the hollow pipe are provided with integrally formed connecting pipe sections; the connecting pipe section is provided with two notches; every two mounting holes corresponding to the circumferential positions of the two dividing plates are fixedly connected with a hollow pipe; the hollow pipe and the mounting hole are fixed in a way that one notch of the connecting pipe section is matched with the bulge of the mounting hole; the transition shaft shoulders of the hollow pipe and the connecting pipe section are in contact with the end face of the dividing plate, and an annular sealing ring is arranged at the transition shaft shoulder of the hollow pipe and the connecting pipe section; the side wall of the hollow pipe is provided with an air hole group at the corresponding position of the circumferential positions of the two notches, wherein one air hole group consists of m air holes which are equidistantly distributed along the axial direction of the hollow pipe, m is more than or equal to 3, and the other air hole group consists of 2m-1 air holes which are equidistantly distributed along the axial direction of the hollow pipe; the two air hole groups are provided with m air holes which are arranged in an aligned mode in the axial direction, and the distance between every two adjacent air holes in the air hole group with the large number of air holes is half of the distance between every two adjacent air holes in the air hole group with the small number of air holes; each air hole of one air hole group with equal number of air holes on all the hollow pipes is connected with a suction nozzle through a thread, and each air hole of the other air hole group on all the hollow pipes is connected with a thread plug through a thread; the two ventilation chambers are sleeved at two ends of the transmission shaft, and a movable sealing ring is arranged between a central hole of each ventilation chamber and the transmission shaft; a spring is arranged between each breather chamber and one bearing seat at the corresponding end; the inner end surface of each breather chamber is contacted with the outer end surface of one dividing disc at the corresponding end; an annular groove is formed in the inner end face of the ventilation chamber, and an annular sealing ring is arranged in the annular groove; one side of each of the two air chambers is in contact with a side plate fixed on the rack, and the other side of each of the two air chambers is limited by a cam block hinged with the rack; the ventilation chamber is provided with a positive pressure area and a negative pressure area, a positive pressure interface is arranged in the positive pressure area, and a negative pressure interface is arranged in the negative pressure area; the seed box is positioned below the hollow pipe at the lowest position and is fixed on the seed box supporting plate; the seed box supporting plate is fixed on the rack, and baffles are fixed around the seed box supporting plate; 2m-1 seed conveying pipes are fixed on the frame and are aligned with 2m-1 air holes in the air hole group with a large number of air holes one by one along the axial position; when the hollow pipe is positioned at the position of the seed conveying pipe, two ends of the hollow pipe are respectively communicated with the positive pressure areas of the two ventilation chambers, and when the hollow pipe is positioned at the other positions, two ends of the hollow pipe are respectively communicated with the negative pressure areas of the two ventilation chambers; the seed cleaning brush main body plate is fixed on the frame, and the seed cleaning brush main body plate and the seed conveying pipe are positioned on different sides of the seed box; 2m-1 anti-interference grooves are formed in the seed cleaning brush main body plate, each anti-interference groove and 2m-1 air holes in the air hole group with the large number of air holes are arranged in an aligned mode along the axial position one by one, and a seed cleaning brush is formed between every two adjacent anti-interference grooves.
Preferably, the cam block is provided with an integrally formed handle.
The quantitative seed metering method of the distribution pipe type pneumatic quantitative seed metering device comprises the following specific steps:
rotating the two cam blocks, loosening the two breather chambers, taking out the two dividing plates and the hollow pipes between the two dividing plates together, taking one of the air hole groups with the same number of air holes on the hollow pipes outwards as a working air hole group according to the requirement of seed throwing space, and connecting each air hole of the other air hole group with a threaded plug respectively; then, selecting suction nozzles with corresponding sizes according to different types of seeds, wherein each air hole of the working air hole group is respectively connected with one suction nozzle; according to the requirements of different positive pressure seed throwing position angles, fixing each seed conveying pipe at a corresponding height according to a corresponding inclination angle, and rotating the transmission shaft and the two vent chambers to enable each air hole of the working air hole group on one hollow pipe to be aligned with each seed conveying pipe, so that positive pressure areas of the two vent chambers are respectively communicated with two ends of the hollow pipe aligned with the seed conveying pipe; then, rotating the two cam blocks to clamp the two ventilation chambers; finally, a motor is adopted to drive a transmission shaft to rotate, and the transmission shaft drives the dividing plate and the hollow pipe on the dividing plate to rotate; when the hollow pipe rotates to the upper part of the seed box, the two ends of the hollow pipe are respectively communicated with the negative pressure areas of the two ventilation chambers, and the seeds are adsorbed on a row of suction nozzles of the hollow pipe under the action of negative pressure airflow; when the hollow pipe rotates to the position of the seed cleaning brush main body plate, if the air hole group with a large number of air holes on the hollow pipe operates, redundant seeds between adjacent suction nozzles are recovered by the seed cleaning brush cleaning seed returning box supporting plate on the seed cleaning brush main body plate, so that only one or two seeds are ensured to be adsorbed on each suction nozzle; when the hollow pipe rotates to the seed conveying pipe position, two ends of the hollow pipe are respectively communicated with the positive pressure areas of the two air vents, and one or two seeds on each suction nozzle fall into the corresponding seed conveying pipe under the action of positive pressure air flow and self gravity, so that quantitative seed sowing is realized.
Preferably, the orientation adjustment process of the different air hole groups of the hollow tube is as follows: the two index plates are separated from the hollow pipes, then the working air hole groups on the hollow pipes are arranged outwards, and the notches at the two ends of the hollow pipes are respectively matched and connected with one mounting hole of the two index plates.
Compared with the prior art, the invention has the beneficial effects that:
1. the suction nozzle of the invention is replaceable, and for different kinds of seeds, the suction nozzles with different sizes are only needed to be replaced for seeding, thus achieving the purposes of one device and reducing the economic cost.
2. The invention adopts a splicing mode to install a hollow pipe on an index plate, two notches are respectively designed at two ends of the hollow pipe, and the two notches correspond to two rows of suction nozzles with different intervals; the seeding space can be adjusted by changing the installation phase angle of the hollow pipe on the dividing plate, thereby meeting the seeding requirements of different spaces.
3. According to the requirements of different positive pressure seed throwing position angles, the invention can fix each seed conveying pipe at a corresponding height according to a corresponding inclination angle, then rotate the transmission shaft and the two ventilation chambers to enable each air hole of the upper working air hole group on one hollow pipe to be aligned with each seed conveying pipe, and enable the positive pressure areas of the two ventilation chambers to be respectively communicated with two ends of the hollow pipe aligned with the seed conveying pipe, thereby flexibly adjusting the positive pressure seed throwing position angle and adapting to different seed throwing requirements. Moreover, the negative pressure area designed by the invention is very large, so that the positive pressure seed feeding position angle is easily adjusted, and the negative pressure seed suction is not influenced. Furthermore, the two ventilation chambers are convenient to loosen and clamp, and the positive pressure seed throwing position angle adjustment is realized by rotation.
4. The suction nozzle, the hollow pipe and the dividing plate are convenient to disassemble, when the suction nozzle, the hollow pipe or the dividing plate is damaged, partial parts can be replaced, the replacement of the whole seeding apparatus is avoided, and the service life of the seeding apparatus is prolonged.
Drawings
FIG. 1 is a perspective view of the overall structure of the seed metering device of the present invention.
FIG. 2 is a top view of the seed meter of the present invention.
Fig. 3 is a perspective view showing the structure of the breather chamber according to the present invention.
FIG. 4 is an assembled perspective view of the hollow tube and mouthpiece of the present invention.
Fig. 5 is a perspective view showing the structure of the index plate of the present invention.
Fig. 6 is an assembled perspective view of the seed case and the seed case support plate of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1 to 6, a distributing pipe type pneumatic quantitative seed metering device comprises a frame 1, a seed box 2, an air vent chamber 3, an index plate 4, a spring 52, a side plate, a cam block 11, a transmission shaft 5, a hollow pipe 6, a suction nozzle 61, a seed conveying pipe 7 and a seed cleaning brush main body plate; two ends of the transmission shaft 5 are supported on two bearing blocks 51 through bearings, and the bearing blocks 51 are fixed on the frame 1; the two dividing plates 4 are connected on the transmission shaft 5 through keys; an annular sealing ring is arranged between the central hole of the dividing plate 4 and the transmission shaft 5; the dividing plate 4 is provided with a plurality of mounting holes 41 which are uniformly distributed along the circumferential direction, and the hole walls of the mounting holes 41 are provided with bulges; both ends of the hollow pipe 6 are provided with integrally formed connecting pipe sections; the connecting pipe section is provided with two notches; every two mounting holes 41 corresponding to the circumferential positions of the two dividing plates 4 are fixedly connected with a hollow pipe 6; the hollow pipe 6 and the mounting hole 41 are fixed in a way that one notch of the connecting pipe section is matched with the bulge of the mounting hole 41; the transition shaft shoulders of the hollow pipe and the connecting pipe section are in contact with the end face of the dividing disc 4, and an annular sealing ring is arranged at the transition shaft shoulders of the hollow pipe and the connecting pipe section; the side wall of the hollow pipe 6 is provided with an air hole group at the corresponding position of the circumferential positions of the two notches, wherein one air hole group consists of m air holes which are equidistantly distributed along the axial direction of the hollow pipe, m is more than or equal to 3, and the other air hole group consists of 2m-1 air holes which are equidistantly distributed along the axial direction of the hollow pipe; the two air hole groups are provided with m air holes which are arranged in an aligned mode in the axial direction, and the distance between every two adjacent air holes in the air hole group with the large number of air holes is half of the distance between every two adjacent air holes in the air hole group with the small number of air holes; all the air holes of one air hole group with equal quantity on all the hollow pipes 6 are connected with suction nozzles 61 through threads, and all the air holes of the other air hole group on all the hollow pipes are connected with threaded plugs through threads, so that only one row of suction nozzles can work as required; the two breather chambers 3 are sleeved at two ends of the transmission shaft 5, and a dynamic sealing ring is arranged between a central hole of the breather chamber 3 and the transmission shaft 5; a spring 52 is arranged between each breather chamber 3 and one bearing seat 51 at the corresponding end; the inner end surface of each breather chamber 3 is contacted with the outer end surface of one dividing disc 4 at the corresponding end; an annular groove 35 is formed in the inner end face of the ventilation chamber 3, an annular sealing ring is arranged in the annular groove 35, the spring 52 ensures that the ventilation chamber 3 tightly presses the dividing plate 4, axial positioning is realized, and the sealing performance of the ventilation chamber 3 is ensured; one side of each of the two breather chambers 3 is in contact with a side plate fixed on the rack 1, and the other side of each of the two breather chambers 3 is limited by a cam block 11 hinged with the rack 1, so that the circumferential positioning of the breather chambers 3 is realized; preferably, the cam block is provided with an integrally formed handle, so that the cam block can rotate conveniently; the ventilation chamber 3 is provided with a positive pressure area 32 and a negative pressure area 31, a positive pressure interface 34 is arranged in the positive pressure area 32, and a negative pressure interface 33 is arranged in the negative pressure area; preferably, the positive pressure interface 34 is connected with a pressure pump, and the negative pressure interface 33 is connected with a vacuum generator; the seed box 2 is positioned below the hollow pipe 6 at the lowest position and is fixed on a seed box supporting plate 21; the seed box supporting plate 21 is fixed on the rack 1, baffles are fixed on the periphery of the seed box supporting plate 21, and the seed box supporting plate 21 can be used for collecting scattered seeds; 2m-1 seed conveying pipes 7 are fixed on the frame 1 and are aligned with 2m-1 air holes in the air hole group with a large number of air holes one by one along the axial position; according to the requirements of different positive pressure seed throwing positions and angles, the circumferential position of the aeration chamber 3 can be adjusted, so that the positive pressure area 32 of the aeration chamber 3 is at different positions, and the position and the angle of the seed conveying pipe 7 fixed on the machine frame are designed according to the position of the positive pressure area 32 of the aeration chamber 3; when the hollow pipe 6 is in a state above the seed box 2, two ends of the hollow pipe are respectively communicated with the negative pressure areas 31 of the two ventilation chambers 3, and when the hollow pipe 6 is in a position state of the seed conveying pipe 7, two ends of the hollow pipe are respectively communicated with the positive pressure areas 32 of the two ventilation chambers 3; the seed cleaning brush main body plate is fixed on the frame, and the seed cleaning brush main body plate and the seed conveying pipe 7 are positioned on different sides of the seed box 2; the cleaning brush main body plate is provided with 2m-1 anti-interference grooves, each anti-interference groove and 2m-1 air holes in the air hole group with the large number of air holes are arranged in an aligned mode along the axial position one by one, a cleaning brush 12 is formed between every two adjacent anti-interference grooves, and when the row of the suction nozzles 61 with the large number operate, the suction nozzles 61 are distributed densely, so that the cleaning brush is used for cleaning redundant seeds between every two adjacent suction nozzles.
The quantitative seed metering method of the distribution pipe type pneumatic quantitative seed metering device comprises the following specific steps:
rotating the two cam blocks, loosening the two breather chambers 3, taking out the two dividing plates 4 and the hollow pipes 6 between the two dividing plates 4 together, taking one of the air hole groups with the same number of air holes on the hollow pipes 6 outwards as a working air hole group according to the requirement of seed throwing space, and connecting each air hole of the other air hole group with a threaded plug respectively; then, according to different types of seeds, selecting suction nozzles with corresponding sizes, and respectively connecting each air hole of the working air hole group with one suction nozzle 61; fixing each seed conveying pipe 7 at a corresponding height according to the requirements of different positive pressure seed throwing position angles, and rotating the transmission shaft 5 and the two vent chambers 3 to enable each air hole of a working air hole group on one hollow pipe 6 to be aligned with each seed conveying pipe 7, so that positive pressure areas 32 of the two vent chambers 3 are respectively communicated with two ends of the hollow pipe 6 aligned with the seed conveying pipe 7; then, rotating the two cam blocks to clamp the two breather chambers 3; finally, a motor is adopted to drive a transmission shaft 5 to rotate, and the transmission shaft 5 drives the dividing plate 4 and the hollow pipe 6 on the dividing plate 4 to rotate; when the hollow pipe 6 rotates to the upper part of the seed box 2, two ends of the hollow pipe 6 are respectively communicated with the negative pressure areas 31 of the two aeration chambers 3, and seeds are adsorbed on a row of suction nozzles 61 of the hollow pipe 6 under the action of negative pressure airflow; when the hollow pipe 6 rotates to the main body plate position of the seed cleaning brush, if the air hole group with a large number of air holes on the hollow pipe 6 operates, redundant seeds between adjacent suction nozzles are cleaned by the seed cleaning brush 12 on the main body plate of the seed cleaning brush and returned to the seed box supporting plate 21 for recovery, so that only one or two seeds are adsorbed on each suction nozzle, if the air hole group with a small number of air holes on the hollow pipe 6 operates, redundant seeds cannot be adhered between the adjacent suction nozzles, and the seed cleaning brush 12 on the main body plate of the seed cleaning brush cannot block each suction nozzle 61 from passing through; when the hollow pipe 6 rotates to the position of the seed conveying pipe 7, two ends of the hollow pipe 6 are respectively communicated with the positive pressure areas 32 of the two air vents 3, and one or two seeds on each suction nozzle fall into the seed conveying pipe 7 under the action of positive pressure air flow and self gravity, so that quantitative seed sowing is realized.
Preferably, the orientation adjustment process of the different air hole groups of the hollow tube 6 is as follows: the two dividing plates 4 are separated from the hollow pipes 6, then the working air hole groups on the hollow pipes 6 are arranged outwards, and the notches at the two ends of the hollow pipes 6 are respectively matched and connected with one mounting hole 41 of the two dividing plates 4.
Claims (4)
1. The utility model provides a distribution pipe formula strength ration seed metering ware, includes frame, seed case, plenum chamber, transmission shaft, suction nozzle, seed conveying pipe and seed cleaning brush main part board, its characterized in that: the device also comprises an index plate, a spring, a side plate, a cam block and a hollow tube; two ends of the transmission shaft are supported on two bearing blocks through bearings, and the bearing blocks are fixed on the rack; the two dividing plates are connected on the transmission shaft through keys; an annular sealing ring is arranged between the central hole of the dividing plate and the transmission shaft; the dividing plate is provided with a plurality of mounting holes which are uniformly distributed along the circumferential direction, and the hole walls of the mounting holes are provided with bulges; both ends of the hollow pipe are provided with integrally formed connecting pipe sections; the connecting pipe section is provided with two notches; every two mounting holes corresponding to the circumferential positions of the two dividing plates are fixedly connected with a hollow pipe; the hollow pipe and the mounting hole are fixed in a way that one notch of the connecting pipe section is matched with the bulge of the mounting hole; the transition shaft shoulders of the hollow pipe and the connecting pipe section are in contact with the end face of the dividing plate, and an annular sealing ring is arranged at the transition shaft shoulder of the hollow pipe and the connecting pipe section; the side wall of the hollow pipe is provided with an air hole group at the corresponding position of the circumferential positions of the two notches, wherein one air hole group consists of m air holes which are equidistantly distributed along the axial direction of the hollow pipe, m is more than or equal to 3, and the other air hole group consists of 2m-1 air holes which are equidistantly distributed along the axial direction of the hollow pipe; the two air hole groups are provided with m air holes which are arranged in an aligned mode in the axial direction, and the distance between every two adjacent air holes in the air hole group with the large number of air holes is half of the distance between every two adjacent air holes in the air hole group with the small number of air holes; each air hole of one air hole group with equal number of air holes on all the hollow pipes is connected with a suction nozzle through a thread, and each air hole of the other air hole group on all the hollow pipes is connected with a thread plug through a thread; the two ventilation chambers are sleeved at two ends of the transmission shaft, and a movable sealing ring is arranged between a central hole of each ventilation chamber and the transmission shaft; a spring is arranged between each breather chamber and one bearing seat at the corresponding end; the inner end surface of each breather chamber is contacted with the outer end surface of one dividing disc at the corresponding end; an annular groove is formed in the inner end face of the ventilation chamber, and an annular sealing ring is arranged in the annular groove; one side of each of the two air chambers is in contact with a side plate fixed on the rack, and the other side of each of the two air chambers is limited by a cam block hinged with the rack; the ventilation chamber is provided with a positive pressure area and a negative pressure area, a positive pressure interface is arranged in the positive pressure area, and a negative pressure interface is arranged in the negative pressure area; the seed box is positioned below the hollow pipe at the lowest position and is fixed on the seed box supporting plate; the seed box supporting plate is fixed on the rack, and baffles are fixed around the seed box supporting plate; 2m-1 seed conveying pipes are fixed on the frame and are aligned with 2m-1 air holes in the air hole group with a large number of air holes one by one along the axial position; when the hollow pipe is positioned at the position of the seed conveying pipe, two ends of the hollow pipe are respectively communicated with the positive pressure areas of the two ventilation chambers, and when the hollow pipe is positioned at the other positions, two ends of the hollow pipe are respectively communicated with the negative pressure areas of the two ventilation chambers; the seed cleaning brush main body plate is fixed on the frame, and the seed cleaning brush main body plate and the seed conveying pipe are positioned on different sides of the seed box; 2m-1 anti-interference grooves are formed in the seed cleaning brush main body plate, each anti-interference groove and 2m-1 air holes in the air hole group with the large number of air holes are arranged in an aligned mode along the axial position one by one, and a seed cleaning brush is formed between every two adjacent anti-interference grooves.
2. The distributing pipe type pneumatic quantitative seed sowing device according to claim 1, characterized in that: the cam block is provided with an integrally formed handle.
3. A quantitative seed metering method of a distributed pipe type pneumatic quantitative seed metering device according to claim 1 or 2, characterized in that: the method comprises the following specific steps:
rotating the two cam blocks, loosening the two breather chambers, taking out the two dividing plates and the hollow pipes between the two dividing plates together, taking one of the air hole groups with the same number of air holes on the hollow pipes outwards as a working air hole group according to the requirement of seed throwing space, and connecting each air hole of the other air hole group with a threaded plug respectively; then, selecting suction nozzles with corresponding sizes according to different types of seeds, wherein each air hole of the working air hole group is respectively connected with one suction nozzle; according to the requirements of different positive pressure seed throwing position angles, fixing each seed conveying pipe at a corresponding height according to a corresponding inclination angle, and rotating the transmission shaft and the two vent chambers to enable each air hole of the working air hole group on one hollow pipe to be aligned with each seed conveying pipe, so that positive pressure areas of the two vent chambers are respectively communicated with two ends of the hollow pipe aligned with the seed conveying pipe; then, rotating the two cam blocks to clamp the two ventilation chambers; finally, a motor is adopted to drive a transmission shaft to rotate, and the transmission shaft drives the dividing plate and the hollow pipe on the dividing plate to rotate; when the hollow pipe rotates to the upper part of the seed box, the two ends of the hollow pipe are respectively communicated with the negative pressure areas of the two ventilation chambers, and the seeds are adsorbed on a row of suction nozzles of the hollow pipe under the action of negative pressure airflow; when the hollow pipe rotates to the position of the seed cleaning brush main body plate, if the air hole group with a large number of air holes on the hollow pipe operates, redundant seeds between adjacent suction nozzles are recovered by the seed cleaning brush cleaning seed returning box supporting plate on the seed cleaning brush main body plate, so that only one or two seeds are ensured to be adsorbed on each suction nozzle; when the hollow pipe rotates to the seed conveying pipe position, two ends of the hollow pipe are respectively communicated with the positive pressure areas of the two air vents, and one or two seeds on each suction nozzle fall into the corresponding seed conveying pipe under the action of positive pressure air flow and self gravity, so that quantitative seed sowing is realized.
4. A quantitative seed metering method of a distributed pipe type pneumatic quantitative seed metering device according to claim 3, characterized in that: the orientation adjustment process of different air hole groups of the hollow pipe is as follows: the two index plates are separated from the hollow pipes, then the working air hole groups on the hollow pipes are arranged outwards, and the notches at the two ends of the hollow pipes are respectively matched and connected with one mounting hole of the two index plates.
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| CN202111248745.6A CN113973549B (en) | 2021-10-26 | 2021-10-26 | Distribution pipe type pneumatic quantitative seed sowing device and quantitative seed sowing method thereof |
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| CN110249761A (en) * | 2019-06-24 | 2019-09-20 | 浙江大学 | Negative pressure inhales kind of clear kind of formula precision seeder of positive pressure and its seed feeding method |
| CN111010933A (en) * | 2019-07-02 | 2020-04-17 | 青岛农业大学 | Air duct device suitable for precision seeding of corn plot |
| CN113317008A (en) * | 2021-06-23 | 2021-08-31 | 浙江理工大学 | Pneumatic oscillating quantitative seed sowing device and quantitative seed sowing method thereof |
-
2021
- 2021-10-26 CN CN202111248745.6A patent/CN113973549B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU3948185A (en) * | 1984-03-14 | 1985-09-19 | Deere & Company | Manifold system for air seeder |
| RU90961U1 (en) * | 2009-10-20 | 2010-01-27 | Федеральное государственное образовательное учреждение высшего профессионального образования "Ульяновская государственная сельскохозяйственная академия" | SEEDER |
| CN208891179U (en) * | 2018-08-20 | 2019-05-24 | 山东农业大学 | A kind of negative pressure spoon belt potato dispenser |
| CN109496504A (en) * | 2018-11-07 | 2019-03-22 | 华中农业大学 | Double plate high speed Pneumatic type bud kind precise seeder |
| CN110249761A (en) * | 2019-06-24 | 2019-09-20 | 浙江大学 | Negative pressure inhales kind of clear kind of formula precision seeder of positive pressure and its seed feeding method |
| CN111010933A (en) * | 2019-07-02 | 2020-04-17 | 青岛农业大学 | Air duct device suitable for precision seeding of corn plot |
| CN113317008A (en) * | 2021-06-23 | 2021-08-31 | 浙江理工大学 | Pneumatic oscillating quantitative seed sowing device and quantitative seed sowing method thereof |
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| CN113973549B (en) | 2022-12-02 |
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Effective date of registration: 20240116 Address after: 230031 b-1018, business office building, Woye garden, No. 81, Ganquan Road, Shushan District, Hefei City, Anhui Province Patentee after: HEFEI WISDOM DRAGON MACHINERY DESIGN Co.,Ltd. Address before: 310018 No. 2 street, Xiasha Higher Education Park, Hangzhou, Zhejiang, 928 Patentee before: ZHEJIANG SCI-TECH University |