CN216437947U - Distributing pipe type pneumatic quantitative seed sowing device - Google Patents
Distributing pipe type pneumatic quantitative seed sowing device Download PDFInfo
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- CN216437947U CN216437947U CN202122584093.5U CN202122584093U CN216437947U CN 216437947 U CN216437947 U CN 216437947U CN 202122584093 U CN202122584093 U CN 202122584093U CN 216437947 U CN216437947 U CN 216437947U
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Abstract
The utility model discloses a distribution pipe type pneumatic quantitative seed sowing device.A transmission shaft drives two index plates and a plurality of hollow pipes between the two index plates; the side wall of the hollow pipe is provided with an air hole group, and each air hole is fixed with a suction nozzle; the two ventilation chambers are sleeved at two ends of the transmission shaft and are fixed with the rack; the inner end surface of each ventilation chamber is in contact with the outer end surface of one index plate at the corresponding end, and the ventilation chamber is provided with a positive pressure area and a negative pressure area; the seed box is positioned below the hollow pipe at the lowest position and is fixed with the rack; when the hollow pipe is in the state above the seed box, two ends of the hollow pipe are respectively communicated with the negative pressure areas of the two ventilation chambers. The utility model realizes the variable position angle of positive pressure seed feeding, meets the seed sowing requirements of different intervals, and realizes multiple purposes by only changing suction nozzles with different sizes for different types of seeds.
Description
Technical Field
The utility model belongs to the technical field of agricultural machinery, and particularly relates to a distributed pipe type pneumatic quantitative seed sowing device.
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 utility model aims to provide a distributing pipe type pneumatic quantitative seed sowing device aiming at the defects of the prior art.
The utility model comprises a frame, a seed box, a breather chamber, an index plate, a transmission shaft, a hollow pipe and a suction nozzle; 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 two dividing plates are fixedly connected through a plurality of hollow pipes; the side wall of the hollow pipe is provided with an air hole group, and the air hole group consists of a plurality of air holes which are arranged at equal intervals along the axial direction of the hollow pipe; a suction nozzle is fixed on each air hole of the hollow pipe; 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; the breather chamber is fixed with the frame; the inner end face of each ventilation chamber is in contact with the outer end face of one dividing disc at the corresponding end, the inner end face of each ventilation chamber is provided with an annular groove, and an annular sealing ring is arranged in each annular groove; 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 with the rack; when the hollow pipe is in the state above the seed box, two ends of the hollow pipe are respectively communicated with the negative pressure areas of the two ventilation chambers.
Preferably, 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 shoulder of the hollow pipe and the connecting pipe section is contacted with the end face of the dividing plate, and the transition shaft shoulder of the hollow pipe and the connecting pipe section is provided with an annular sealing ring.
More preferably, the side wall of the hollow pipe is provided with an air hole group at the position corresponding to 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; and each air hole of one air hole group with the same number of air holes on all the hollow pipes is connected with a suction nozzle, and each air hole of the other air hole group on all the hollow pipes is connected with a threaded plug through threads.
More preferably, 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 other positions, two ends of the hollow pipe are respectively communicated with the negative pressure areas of the two ventilation chambers.
More preferably, the seed cleaning brush body plate is fixed on the frame, and the seed cleaning brush body plate and the seed conveying pipe are positioned on different sides of the seed box.
More preferably, the seed cleaning brush main body plate is provided with 2m-1 anti-interference grooves, each anti-interference groove is 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, and a seed cleaning brush is formed between every two adjacent anti-interference grooves.
Preferably, the air hole of the hollow pipe is connected with the suction nozzle through threads.
Preferably, a spring is arranged between each breather chamber and a bearing seat at the corresponding end; 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.
More preferably, the cam block is provided with an integrally formed handle.
Preferably, the seed box is fixed on a seed box supporting plate; the seed box supporting plate is fixed on the rack, and baffles are fixed on the periphery of the seed box supporting plate.
The utility model has the beneficial effects that:
1. the suction nozzle of the utility model 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 utility model 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 utility model can fix each seed conveying pipe at a corresponding height according to a corresponding inclination angle, then rotate 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, and enable positive pressure areas of the two vent 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 angles and adapting to different seed throwing requirements. Moreover, the negative pressure area designed by the utility model 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 present invention.
Fig. 2 is a top view 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 utility model will be further explained with reference to the drawings.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the distributed pipe type pneumatic quantitative seed sowing device comprises a frame 1, a seed box 2, an air vent chamber 3, an index plate 4, a transmission shaft 5, a hollow pipe 6 and a suction nozzle 61; 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 two dividing plates 4 are fixedly connected through a plurality of hollow pipes 6; the side wall of the hollow pipe 6 is provided with an air hole group, and the air hole group consists of a plurality of air holes which are distributed at equal intervals along the axial direction of the hollow pipe; a suction nozzle 61 is fixed on each air hole of the hollow pipe 6; 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; the ventilation chamber 3 is fixed with the frame; the inner end face of each ventilation chamber 3 is in contact with the outer end face of one dividing disc 4 of the corresponding end, the inner end face of each ventilation chamber 3 is provided with an annular groove 35, and an annular sealing ring is arranged in each annular groove 35; 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; the seed box 2 is positioned below the hollow pipe 6 at the lowest position and is fixed with the rack 1; when the hollow pipe 6 is in the state above the seed box 2, two ends are respectively communicated with the negative pressure areas 31 of the two aeration chambers 3.
As a preferred embodiment, as shown in fig. 5, the dividing plate 4 is provided with a plurality of mounting holes 41 uniformly distributed along the circumferential direction, and the hole walls of the mounting holes 41 are provided with protrusions; 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 shoulder of the hollow pipe and the connecting pipe section is contacted with the end face of the dividing plate 4, and the transition shaft shoulder of the hollow pipe and the connecting pipe section is provided with an annular sealing ring.
As a more preferable embodiment, as shown in FIG. 4, the side wall of the hollow tube 6 is provided with a gas hole group at the position corresponding to the circumferential position of the two notches, wherein one gas hole group is composed of m gas holes which are equidistantly arranged along the axial direction of the hollow tube, m is larger than or equal to 3, and the other gas hole group is composed of 2m-1 gas holes which are equidistantly arranged along the axial direction of the hollow tube; 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 the same quantity on all the hollow pipes is connected with a suction nozzle, and each air hole of the other air hole group on all the hollow pipes is connected with a threaded plug through threads, so that only one air hole group is ensured to work as required.
As a more preferable embodiment, as shown in FIG. 1, 2m-1 seed conveying pipes 7 are fixed on the frame 1 and 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 6 is positioned at the position of the seed conveying pipe 7, two ends are respectively communicated with the positive pressure areas 32 of the two air chambers 3, and when the hollow pipe is positioned at other positions, two ends are respectively communicated with the negative pressure areas of the two air chambers.
As a more preferred embodiment, as shown in FIG. 2, the seed-cleaning brush body plate is fixed to the frame, and the seed-cleaning brush body plate and the seed feed pipe 7 are located on different sides of the seed casing 2.
As a more preferable embodiment, as shown in FIG. 2, the seed cleaning brush main body plate is provided with 2m-1 interference preventing grooves, each interference preventing groove is 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, a seed cleaning brush 12 is formed between every two adjacent interference preventing grooves, and when the air hole group with a large number of air holes works, the suction nozzles 61 are distributed densely, and the seed cleaning brush is used for cleaning redundant seeds between every two adjacent suction nozzles.
As a preferred embodiment, the air hole of the hollow tube 6 is connected with the suction nozzle 61 by screw threads.
As a preferred embodiment, as shown in fig. 1 and 2, a spring 52 is provided between each breather chamber 3 and a bearing seat 51 at the corresponding end; the spring 52 ensures that the vent chamber 3 compresses the indexing disc 4, realizes axial positioning and ensures the tightness of the vent chamber 3; one side of each of the two ventilation chambers 3 is in contact with a side plate fixed on the rack 1, and the other side of each of the two ventilation chambers 3 is limited by a cam block 11 hinged with the rack 1, so that the circumferential positioning of the ventilation chambers 3 is realized. Wherein, according to the demand of different positive pressure seed throwing position 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.
As a more preferred embodiment, the cam block is provided with an integrally formed handle to facilitate rotation of the cam block.
As a preferred embodiment, as shown in fig. 6, the seed box 2 is fixed to a seed box support plate 21; seed case backup pad 21 is fixed in on the frame 1, and all have around the seed case backup pad 21 and be fixed with the baffle, and seed case backup pad 21 can be used to collect the seed that scatters.
Under the condition of the above embodiments, the working principle of the distributed pipe type pneumatic quantitative seed sowing device of the utility model is as follows:
a positive pressure interface 34 of the breather chamber 3 is connected with a pressure pump, and a negative pressure interface 33 is connected with a vacuum generator; 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; wherein, the adjustment process of different air hole group orientations 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. 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; according to the requirements of different positive pressure seed throwing position angles, fixing each seed conveying pipe 7 at a corresponding height according to a corresponding inclination angle, and rotating the transmission shaft 5 and the two breather 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 the positive pressure areas 32 of the two breather chambers 3 are respectively communicated with two ends of the hollow pipe 6 aligned with the seed conveying pipe 7. Subsequently, the two cam blocks are rotated 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, because the two ends of the hollow pipe 6 are respectively communicated with the negative pressure areas 31 of the two aeration chambers 3, the 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.
Claims (10)
1. Distribution pipe formula strength quantitative seed metering ware, including frame, seed case, plenum, transmission shaft and suction nozzle, its characterized in that: the device also comprises an index plate and a hollow pipe; 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 center hole of the dividing disc and the transmission shaft; the two dividing plates are fixedly connected through a plurality of hollow pipes; the side wall of the hollow pipe is provided with an air hole group, and the air hole group consists of a plurality of air holes which are arranged at equal intervals along the axial direction of the hollow pipe; a suction nozzle is fixed on each air hole of the hollow pipe; 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; the ventilation chamber is fixed with the frame; the inner end face of each ventilation chamber is in contact with the outer end face of one dividing disc at the corresponding end, the inner end face of each ventilation chamber is provided with an annular groove, and an annular sealing ring is arranged in each annular groove; 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 with the rack; when the hollow pipe is in the state above the seed box, two ends of the hollow pipe are respectively communicated with the negative pressure areas of the two ventilation chambers.
2. The distribution pipe type pneumatic quantitative seed sowing device according to claim 1, characterized in that: the dividing plate is provided with a plurality of mounting holes which are uniformly distributed along the circumferential direction, and the wall of each mounting hole is provided with a bulge; 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 hollow pipe and the transition shaft shoulder of the connecting pipe section are in contact with the end face of the dividing disc, and the transition shaft shoulder of the hollow pipe and the connecting pipe section is provided with an annular sealing ring.
3. The distributed pipe pneumatic quantitative seed metering device of claim 2, wherein: the side wall of the hollow pipe is provided with a gas hole group at the corresponding position of the circumferential positions of the two notches, wherein one gas hole group consists of m gas holes which are equidistantly distributed along the axial direction of the hollow pipe, m is more than or equal to 3, and the other gas hole group consists of 2m-1 gas holes which are equidistantly distributed along the axial direction of the hollow pipe; the two air hole groups are formed by aligning m air holes in the axial position, and the distance between two adjacent air holes in the air hole group with a large number of air holes is half of the distance between two adjacent air holes in the air hole group with a small number of air holes; and each air hole of one air hole group with the same number of air holes on all the hollow pipes is connected with a suction nozzle, and each air hole of the other air hole group on all the hollow pipes is connected with a threaded plug through threads.
4. The distributed pipe pneumatic quantitative seed metering device of claim 3, wherein: 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 other positions, two ends of the hollow pipe are respectively communicated with the negative pressure areas of the two ventilation chambers.
5. The distributed pipe pneumatic quantitative seed metering device of claim 4, wherein: 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.
6. The distribution pipe type pneumatic quantitative seed sowing device according to claim 5, characterized in that: the seed cleaning brush main body plate is provided with 2m-1 anti-interference grooves, each anti-interference groove is aligned with 2m-1 air holes in an air hole group with a large number of air holes one by one along the axial position, and a seed cleaning brush is formed between every two adjacent anti-interference grooves.
7. The distributed pipe pneumatic quantitative seed metering device of claim 1, wherein: the air hole of the hollow pipe is connected with the suction nozzle through threads.
8. The distributed pipe pneumatic quantitative seed metering device of claim 1, wherein: a spring is arranged between each breather chamber and one bearing seat at the corresponding end; 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.
9. The distributed pipe pneumatic quantitative seed metering device of claim 8, wherein: the cam block is provided with an integrally formed handle.
10. The distributed pipe pneumatic quantitative seed metering device of claim 1, wherein: the seed box is fixed on the seed box supporting plate; the seed box supporting plate is fixed on the rack, and baffles are fixed on the periphery of the seed box supporting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122584093.5U CN216437947U (en) | 2021-10-26 | 2021-10-26 | Distributing pipe type pneumatic quantitative seed sowing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122584093.5U CN216437947U (en) | 2021-10-26 | 2021-10-26 | Distributing pipe type pneumatic quantitative seed sowing device |
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| Publication Number | Publication Date |
|---|---|
| CN216437947U true CN216437947U (en) | 2022-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122584093.5U Active CN216437947U (en) | 2021-10-26 | 2021-10-26 | Distributing pipe type pneumatic quantitative seed sowing device |
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| Country | Link |
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| CN (1) | CN216437947U (en) |
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2021
- 2021-10-26 CN CN202122584093.5U patent/CN216437947U/en active Active
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