Air suction type seed sowing machine

Abstract

The utility model discloses an air suction type seed sowing machine. The air suction type seed sowing machine comprises a sowing machine body, a sowing bin, a sowing roller, a rotation driving part, a negative pressure fan, a shielding part and a blanking pipeline, when the multiple rows of air suction holes rotate to one side in the seeding bin, the multiple rows of air suction holes can suck seeds one by one under the action of negative pressure in the first space and bring the seeds to the outer side of the seeding bin, the effect is relatively stable, and the phenomenon of missing discharge caused by the fact that the seeds are not brought out is not likely to occur; and the carried seeds lose the suction force, fall into the blanking pipeline and fall into the field along the blanking pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of seed sowing machines, in particular to an air suction type seed sowing machine. Background Art

[0002] A seed drill is a mechanical device used for agricultural planting, which can complete functions such as furrowing, seeding, fertilizer discharging, and soil covering during the process of moving. At present, most of the seed drills on the market use an outer groove wheel as a core component for seeding, but only use the grooves on the cylindrical surface of the outer groove wheel to clamp a single seed and bring it out of the pile of seeds. The effect is not particularly stable and it is easy to miss the seeding. Utility Model Content

[0003] The present application provides an air-suction seed seeder, which can solve the problem that the existing seeder has unstable seeding effect and is prone to missed seeds.

[0004] The present application provides an air-suction seed seeder, comprising a seeder body, including: a seeding bin, the seeding bin is arranged on the seeding machine body, and a discharge port is arranged at the lower end of the seeding bin; a seeding drum, the seeding drum is arranged at the discharge port, a part of the seeding drum extends into the seeding bin, and the other part is located outside the seeding bin, the seeding drum is rotatably connected to the seeding bin, and its rotating shaft is along the horizontal direction, a first space is arranged in the seeding drum, and a plurality of rows of suction holes are arranged in the circumferential direction on the cylindrical surface of the seeding drum, and the suction holes connect the first space with the outside world; a rotation drive unit, the rotation drive unit is used to drive the seeding drum to rotate; a negative pressure fan, the negative pressure fan is arranged in a first pipe, and the first pipe A channel is fixedly connected to the seeder body, the first pipeline is connected to the first space from the outside, and the connecting position is located at the rotating shaft of the sowing drum, which is used to form a negative pressure in the first space so that the suction hole can absorb the nearby seeds; a shielding part, the shielding part extends from the first pipeline into the first space and fits the inner wall of the first space, and the fitting part is located on the upper side outside the sowing bin, the shielding part is fixedly connected to the first pipeline, and the sowing drum is rotatably connected to the shielding part, when the suction hole rotates to the shielding part, the seeds sucked by it will fall downward; a dropping pipe, the dropping pipe is fixedly arranged on the seeder body, and is used to catch the seeds dropped from the shielding part and make them fall into the field.

[0005] In one embodiment, on the outer cylindrical surface of each of the sowing drums, a groove is provided at each of the air suction holes, and each of the grooves can accommodate a seed.

[0006] In one embodiment, a front side of each of the grooves is protruded with an arc-shaped rib, and the seeds sucked at the grooves extend outwardly beyond the rib in the radial direction of the seeding drum.

[0007] In one embodiment, the rotating drive unit includes a first pulley, a driving motor, a second pulley, and a transmission belt. The first pulley is fixed on the sowing drum, and its center axis coincides with the rotating axis of the sowing drum. The driving motor is arranged on the seeder body, and its output shaft is fixedly connected to the center of the second pulley. The transmission belt is sleeved between the first pulley and the second pulley.

[0008] To sum up, in the present application, an air-suction seed seeder has the following beneficial effects compared with the prior art: when the multiple rows of air suction holes are rotated to one side of the sowing bin, they can suck seeds one by one and bring them to the outside of the sowing bin under the action of the negative pressure in the first space, and the effect is relatively stable, and it is not easy to have leakage caused by not bringing out seeds. When the exhaust holes are rotated to the shielding part, the seeds carried by them lose suction, fall into the drop pipe and fall into the field along the drop pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0010] Figure 1 The overall structure view of an air suction seed seeder;

[0011] Figure 2 for Figure 1 Magnified view of area A in the middle;

[0012] Figure 3 It is a front view of an air suction seed seeder;

[0013] Figure 4 for Figure 3 Sectional view along BB;

[0014] Figure 5 for Figure 4 Magnified view of region C.

[0015] In the figure, 1. seeder body; 2. sowing bin; 3. discharge port; 4. feed port; 5. connection hole; 6. sowing drum; 7. first space; 8. large cylindrical space; 9. small cylindrical space; 10. suction hole; 11. groove; 12. rib; 13. rotating drive part; 14. first pulley; 15. drive motor; 16. second pulley; 17. transmission belt; 18. first pipeline; 19. negative pressure fan; 20. shielding part; 21. drop pipeline. DETAILED DESCRIPTION

[0016] The following is a further description of the specific implementation of the utility model in conjunction with the accompanying drawings; the following embodiments are used to illustrate the utility model, but are not used to limit the scope of the utility model. The described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0017] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by those skilled in the art in the ordinary sense. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0018] See also Figures 1 to 5 A pneumatic seed seeder includes: a seeder body 1, a sowing bin 2, a sowing drum 6, a rotation drive unit 13, a negative pressure fan 19, a shielding unit 20, and a material drop pipe 21. The specific structure of the seeder body 1 is a prior art, which will not be described in detail here, and is not specifically drawn in the drawings of the specification, but is represented by simplified means.

[0019] See also Figure 1 The sowing bin 2 is fixed on the seeder body 1 by welding and is used to store seeds to be sown. The sowing bin 2 is provided with a discharge port 3 at the lower end and a feed port 4 at the upper end.

[0020] See also Figure 2 The sowing roller 6 is located at the discharge port 3, most of the sowing roller 6 extends into the sowing bin 2, and a small part is located outside the sowing bin 2. A penetrating connecting hole 5 is provided on each of the left and right sides of the sowing bin 2. Both ends of the sowing roller 6 are rotatably connected to the two connecting holes 5, and the rotating axis is in the horizontal direction.

[0021] See also Figure 2The rotation driving part 13 is used to drive the sowing drum 6 to rotate. In one embodiment, the rotation driving part 13 includes a first pulley 14, a driving motor 15, a second pulley 16, and a transmission belt 17. The first pulley 14 is fixed on the sowing drum 6 by welding and is located outside the sowing bin 2. Its central axis coincides with the rotating axis of the sowing drum 6. The housing of the driving motor 15 is fixed on the seeder body 1, and its output shaft is fixedly connected to the center of the second pulley 16. The transmission belt 17 is sleeved between the first pulley 14 and the second pulley 16 to drive the first pulley 14 to rotate. Preferably, the transmission belt 17 is a synchronous belt. This arrangement has a reasonable structure and a stable transmission effect.

[0022] See also Figure 3 , Figure 4 , Figure 5 The sowing drum 6 is provided with a first space 7, which includes a large cylindrical space 8 and a small cylindrical space 9. The large cylindrical space 8 is located at the center of the sowing drum 6, and the small cylindrical space 9 is located at the rotation axis of the sowing drum 6 and connects the large cylindrical space 8 with the outside. A plurality of rows of air suction holes 10 are arranged in the circumferential direction on the cylindrical surface of the sowing drum 6, and each row of the air suction holes 10 is arranged in the transverse direction, and the air suction holes 10 connect the first space 7 with the outside.

[0023] See also Figure 5 The negative pressure fan 19 is arranged in the first pipe 18, the first pipe 18 is welded to the seeder body 1, the sowing drum 6 is rotatably connected to the first pipe 18, the first pipe 18 is connected to the first space 7 from the outside, and the connecting position is located at the rotating shaft of the sowing drum 6 (that is, connected to the small cylindrical space 9), which is used to form a negative pressure in the first space 7, so that the suction holes 10 can absorb the nearby seeds, and each of the suction holes 10 can absorb one seed.

[0024] See also Figure 1 , Figure 2 The shielding portion 20 extends from the first pipe 18 into the first space 7 and fits against the inner wall of the first space 7, and the fitting portion is located on the upper side outside the sowing bin 2. The shielding portion 20 is fixedly connected to the first pipe 18 by welding, and the sowing drum 6 is rotatably connected to the shielding portion 20. When the air suction hole 10 rotates to the shielding portion 20, the shielding portion 20 will block the air suction hole 10, causing the seeds sucked therein to lose suction and fall downward.

[0025] See also Figure 1The drop pipe 21 is fixed on the planter body 1, with its upper end facing the location of the shielding part 20 and its lower end facing the field, and is used to catch the seeds dropped from the shielding part 20 and make them fall into the field.

[0026] See also Figure 2 In one embodiment, on the outer cylindrical surface of each of the sowing rollers 6, each of the air suction holes 10 is recessed inwardly with a groove 11, and the air suction hole 10 is located at the bottom of the groove 11. Each of the grooves 11 can accommodate a seed. This arrangement can improve the stability of the air suction hole 10 in sucking the seeds and carrying them during the process of moving.

[0027] See also Figure 2 In one embodiment, a circular arc-shaped rib 12 is protruded and fixedly provided on the front side of each of the grooves 11 (the so-called front side of the groove 11 is the side that first enters the sowing bin 2 as the sowing roller 6 rotates), and the seeds sucked at the grooves 11 extend outwardly beyond the rib 12 in the radial direction of the sowing roller 6. In this way, the rib 12 can largely replace the seeds in the grooves 11 to collide with other seeds in the sowing bin 2 during the movement, which can further improve the stability of the suction hole 10 in the process of sucking seeds and carrying them.

[0028] Working principle: When the multiple rows of suction holes 10 are rotated to one side of the sowing bin 2, they can absorb seeds one by one and bring them to the outside of the sowing bin 2 under the action of the negative pressure in the first space 7. When the exhaust holes are rotated to the shielding part 20, the seeds they carry lose suction and fall into the drop pipe 21 and fall into the field along the drop pipe 21.

Claims

1. An air suction seed seeder, comprising a seeder body, characterized in that: include: A sowing bin, which is arranged on the seeder body and has a discharge port at the lower end; A sowing drum, wherein the sowing drum is arranged at the discharge port, a part of the sowing drum extends into the sowing bin, and the other part is located outside the sowing bin, the sowing drum is rotatably connected to the sowing bin, and its rotating shaft is in the horizontal direction, a first space is arranged in the sowing drum, and a plurality of rows of air suction holes are arranged in the circumferential direction on the cylindrical surface of the sowing drum, and the air suction holes connect the first space with the outside world; A rotation driving unit, the rotation driving unit is used to drive the sowing drum to rotate; A negative pressure fan, the negative pressure fan is arranged in a first pipe, the first pipe is fixedly connected to the seed drill body, the first pipe is connected to the first space from the outside, and the connecting position is located at the rotating shaft of the seeding drum, and is used to form a negative pressure in the first space so that the suction hole can absorb the approaching seeds; A shielding portion, the shielding portion extends from the first pipe into the first space and fits the inner wall of the first space, and the fitting portion is located on the upper side outside the sowing bin, the shielding portion is fixedly connected to the first pipe, the sowing drum is rotatably connected to the shielding portion, and when the suction hole rotates to the shielding portion, the seeds sucked by it will fall downward; A drop pipe is fixed on the seeder body and is used to catch the seeds dropped from the shielding part and make them fall into the field.

2. The air suction seed seeder according to claim 1, characterized in that: On the outer cylindrical surface of each of the sowing drums, a groove is arranged at each of the air suction holes, and each of the grooves can accommodate a seed.

3. The air suction seed seeder according to claim 2, characterized in that: A circular arc-shaped rib is protrudingly provided on the front side of each groove, and the seeds sucked at the groove extend outwardly beyond the rib in the radial direction of the sowing drum.

4. The air suction seed seeder according to claim 1, characterized in that: The rotating drive part includes a first pulley, a driving motor, a second pulley, and a transmission belt. The first pulley is fixed on the sowing drum, and its central axis coincides with the rotating axis of the sowing drum. The driving motor is arranged on the seeder body, and its output shaft is fixedly connected to the center of the second pulley. The transmission belt is sleeved between the first pulley and the second pulley.

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