Air-blowing type segmented seed-metering pipe

Abstract

The utility model discloses an air-blowing type segmented seed-metering pipe, and belongs to the field of agricultural machinery. The utility model solves the technical problem that the seed sowing accuracy and the germination rate are influenced as the moving track of seeds in the seed sowing pipe is not stable enough because the volume of the inner cavity of the existing seed sowing pipe is too large. Comprising a seed feeding pipe, a corrugated pipe, a seed discharging pipe and a connecting piece, an upper pipe opening of the seed discharging pipe is detachably connected with a lower pipe opening of the seed feeding pipe through the corrugated pipe, the connecting piece is installed at the upper end of the seed feeding pipe, an external seeder monitor is installed at the upper end of the seed feeding pipe through the connecting piece, and the seed feeding pipe and the seed discharging pipe are each provided with a smooth inner wall. An upper pipe opening of the seed feeding pipe is an air inlet and is used for feeding seeds, a lower pipe opening of the seed discharging pipe is an air outlet and is used for discharging seeds, the inner diameter of the seed feeding pipe is the same as that of the seed discharging pipe, and the inner diameter of the seed discharging pipe ranges from 17 mm to 19 mm. The collision probability of the seeds and the pipe wall is reduced, so that the seeding accuracy and the germination rate are improved. The utility model is used for the seed metering work of the seed metering device.

Description

Technical Field

[0001] The utility model relates to a pneumatic blowing segmented seed discharging pipe, belonging to the field of agricultural machinery. Background Art

[0002] The existing seeder is attached to the rear of an agricultural transport vehicle. The seeder includes a seed box, a seed discharger and a seed discharging pipe. The seed inlet of the seed discharging pipe is connected to the seed discharger. Most of the seed discharging pipes used by the seed discharger are made of plastic. The diameter of the existing seed discharging pipe can reach 40 mm, and the inner cavity volume is relatively large. This design results in an unstable movement trajectory of the seeds in the seed discharging pipe, and multiple seeds may collide with each other in the pipe, or the seeds may collide with the pipe wall to form an ejection, thereby affecting the seeding accuracy rate and the germination rate. When the existing seed discharging pipe works, the seed discharging port at its bottom will contact and wear the soil, and the replacement cost is relatively high.

[0003] In summary, the existing seed discharging pipe has the technical problem that due to the relatively large inner cavity volume, the movement trajectory of the seeds in the seed discharging pipe is not stable enough, thereby affecting the seeding accuracy rate and the germination rate. Summary of the Invention

[0004] The purpose of the utility model is to solve the technical problem that the existing seed discharging pipe has an unstable movement trajectory of the seeds in the seed discharging pipe due to the relatively large inner cavity volume, thereby affecting the seeding accuracy rate and the germination rate, and further provides a pneumatic blowing segmented seed discharging pipe.

[0005] The technical solution of the utility model is a pneumatic blowing segmented seed discharging pipe, which includes an upper seed pipe, a corrugated pipe, a lower seed pipe and a connector. The upper pipe orifice of the lower seed pipe is detachably connected to the lower pipe orifice of the upper seed pipe through the corrugated pipe. A connector is installed at the upper end of the upper seed pipe. An external seeder monitor is installed at the upper end of the upper seed pipe through the connector. The upper seed pipe and the lower seed pipe are both provided with smooth inner walls. The upper pipe orifice of the upper seed pipe is an air inlet and is used for feeding seeds. The lower pipe orifice of the lower seed pipe is an air outlet and is used for discharging seeds. The inner diameter size of the upper seed pipe is the same as that of the lower seed pipe. The inner diameter size range of the lower seed pipe is 17 mm - 19 mm.

[0006] As another improvement of the utility model, the upper seed pipe includes a first straight pipe section and a first hanging ear. The first hanging ear is installed on the outer side wall of the first straight pipe section. The upper pipe orifice of the upper seed pipe is sleeved on the seed outlet of an external seed discharger.

[0007] As another improvement of the utility model, the overall shape of the lower seed pipe is J-shaped. The lower seed pipe includes a second straight pipe section, a first arc transition pipe section, a second arc transition pipe section and an arc pipe section. The second straight pipe section, the first arc transition pipe section, the second arc transition pipe section and the arc pipe section are connected end to end in sequence.

[0008] As another improvement of the utility model, the cross-sectional shape of the upper seed pipe is an annular shape.

[0009] As another improvement of the present utility model, the cross-sectional shape of the seed dropping tube is an annular shape.

[0010] As another improvement of the present utility model, the seed dropping tube further includes a second hanging ear, and the second hanging ear is installed on the outer side wall of the seed dropping tube.

[0011] As another improvement of the present utility model, the upper seed tube is made of stainless steel.

[0012] As another improvement of the present utility model, the seed dropping tube is made of stainless steel.

[0013] As another improvement of the present utility model, the first hanging ear is installed on the outer side wall of the upper seed tube by welding.

[0014] As another improvement of the present utility model, the second hanging ear is installed on the outer side wall of the seed dropping tube by welding.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1. For the seed dropping tube of the pneumatic blowing type segmented seed metering tube of the present utility model, the inner diameter size range is 17 mm - 19 mm, which is much smaller than 40 mm of the existing conventional seed metering tube. Seeds need to be blown through the seed metering tube by air pressure. Due to its smaller cross-sectional area and the action of air pressure, on the one hand, the matching degree between the contour size of the seeds and the inner diameter cross-sectional area of the seed metering tube is high. On the other hand, with the reduction of the cross-sectional area of the seed metering tube and the increase of air pressure, the running track of the seeds is more stable than that of the existing seed metering tube, and the collision probability between the seeds and the tube wall is reduced, thereby improving the sowing accuracy and germination rate.

[0017] 2. The pneumatic blowing type structure of the pneumatic blowing type segmented seed metering tube of the present utility model can ensure that the movement tracks of the seeds in the seed tube are consistent, and thus ensure that the landing intervals of the seeds are consistent.

[0018] 3. The upper seed tube and the seed dropping tube of the pneumatic blowing type segmented seed metering tube of the present utility model are detachably connected, which is convenient and fast to install. The seed dropping tube is easily worn, and it is convenient and fast to replace, saving costs.

[0019] 4. The upper seed tube and the seed dropping tube of the pneumatic blowing type segmented seed metering tube of the present utility model are detachably connected through a corrugated pipe, and the length dimension of the corrugated pipe can be adjusted, thereby being able to adjust the problem of low connection tightness caused by part errors in production. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the schematic side view of the overall assembly of the pneumatic blowing type segmented seed metering tube of the present utility model;

[0021] Figure 2 is the schematic front view of the overall assembly of the pneumatic blowing type segmented seed metering tube of the present utility model;

[0022] Figure 3 It is a schematic structural diagram of the upper seed tube.

[0023] Figure 4 It is a schematic structural diagram of the lower seed tube. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all the embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. In the description of the present utility model, it should be noted that the positional relationships indicated by terms such as "upper", "lower", "first", "second", etc. are only the positional relationships based on the orientation shown in the drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the components referred to have a specific orientation, are constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0025] Specific embodiment 1: In combination with Figures 1 to 4 This embodiment will be described. This embodiment is a pneumatic blowing segmented seed tube, which includes an upper seed tube 1, a corrugated tube 3, a lower seed tube 2 and a connector 4. The upper pipe orifice of the lower seed tube 2 is detachably connected to the lower pipe orifice of the upper seed tube 1 through the corrugated tube 3. A connector 4 is installed at the upper end of the upper seed tube 1. An external seeder monitor is installed at the upper end of the upper seed tube 1 through the connector 4. Both the upper seed tube 1 and the lower seed tube 2 are provided with smooth inner walls. The upper pipe orifice of the upper seed tube 1 is an air inlet and is used for seed inlet. The lower pipe orifice of the lower seed tube 2 is an air outlet and is used for seed outlet. The inner diameter size of the upper seed tube 1 is the same as that of the lower seed tube 2. The inner diameter size range of the lower seed tube 2 is 17 mm - 19 mm.

[0026] Under the action of positive air pressure, after the seeds enter the seed discharging pipe from the seed inlet, they are continuously pushed forward by the air pressure to avoid blockage of the seed pipe. The air pressure forces the seeds to fall along the side wall of the seed pipe, and the remaining positive air pressure blows the seeds onto the soil, protecting the seeds from bouncing after landing and ensuring accurate plant spacing. The inner diameter size range of the lower seed pipe is 17 mm - 19 mm, and the inner diameter size of the lower seed pipe is set to 17 mm or 19 mm, which is much smaller than the 40 mm of the existing conventional seed discharging pipe. The seeds need to be pneumatically conveyed through the seed discharging pipe. Due to its smaller cross-sectional area and the action of air pressure, the contour size of the seeds matches well with the inner diameter cross-sectional area of the seed discharging pipe. As the cross-sectional area of the seed discharging pipe decreases, the air pressure increases, and the running trajectory of the seeds is more stable than that of the existing seed discharging pipe. The probability of collision between the seeds and the pipe wall decreases, thereby improving the sowing accuracy and germination rate. The upper seed pipe and the lower seed pipe are detachably connected, which is convenient and fast to install. The lower seed pipe is prone to wear, and it is convenient and fast to replace, saving costs. The upper seed pipe and the lower seed pipe are detachably connected through a corrugated pipe, and the length size of the corrugated pipe can be adjusted, so as to adjust the problem of low connection tightness caused by part errors in production.

[0027] Specific Embodiment 2: In combination with Figures 1 to 4 This embodiment is described. The difference between this embodiment and Specific Embodiment 1 is that the upper seed pipe 1 includes a first straight pipe section 1-1 and a first hanging ear 1-2. The first hanging ear 1-2 is installed on the outer side wall of the first straight pipe section 1-1, and the upper pipe orifice of the upper seed pipe 1 is sleeved on the seed outlet of an externally arranged seed discharger. The upper pipe orifice of the upper seed pipe 1 is provided with a large port, and it is sleeved on the seed outlet of the externally arranged seed discharger through the large port to ensure the stable transportation of the seeds. The setting of the first hanging ear facilitates the taking and installation. The other components and connection methods are the same as those in Specific Embodiment 1.

[0028] Specific Embodiment 3: In combination with Figures 1 to 4 This embodiment is described. The difference between this embodiment and Specific Embodiment 1 is that the overall shape of the lower seed pipe 2 is J-shaped. The lower seed pipe 2 includes a second straight pipe section 2-1, a first arc transition pipe section 2-2, a second arc transition pipe section 2-3, and an arc pipe section 2-4. The second straight pipe section 2-1, the first arc transition pipe section 2-2, the second arc transition pipe section 2-3, and the arc pipe section 2-4 are connected end to end in sequence. The overall shape of the lower seed pipe 2 is J-shaped. The pneumatic seed pipe can ensure that the movement trajectories of the seeds in the seed pipe are consistent. The J-shaped seed channel has a certain buffering effect on the air flow and further stabilizes the movement trajectory of the seeds, thereby ensuring that the landing spacing of the seeds is consistent. The other components and connection methods are the same as those in Specific Embodiment 1 or 2.

[0029] Specific Embodiment 4: In combination with Figures 1 to 4 This embodiment is described. The difference between this embodiment and Specific Embodiment 1 is that the cross-sectional shape of the upper seed pipe 1 is an annular shape. The purpose of such a design is to facilitate installation and connection. The other components and connection methods are the same as any one of Specific Embodiments 1 to 3.

[0030] Specific Embodiment Five: In combination with Figures 1 to 4 This embodiment is described. The difference between this embodiment and the first specific embodiment is that the cross-sectional shape of the seed tube 2 is an annular shape. The purpose of such a design is to facilitate installation and connection. Other components and connection methods are the same as any one of the first to fourth specific embodiments.

[0031] Specific Embodiment Six: In combination with Figures 1 to 4 This embodiment is described. The difference between this embodiment and the first specific embodiment is that the seed tube 2 further includes a second hanging ear 2-5, and the second hanging ear 2-5 is installed on the outer side wall of the arc tube section 2-4. The setting of the second hanging ear facilitates taking and installation. Other components and connection methods are the same as any one of the first to fifth specific embodiments.

[0032] Specific Embodiment Seven: In combination with Figures 1 to 4 This embodiment is described. The difference between this embodiment and the first specific embodiment is that the upper seed tube 1 is made of stainless steel. The function of such a design is to facilitate the processing of the smooth inner wall of the upper seed tube, and the installation and use are more convenient and the cost is lower. Other components and connection methods are the same as any one of the first to sixth specific embodiments.

[0033] Specific Embodiment Eight: In combination with Figures 1 to 4 This embodiment is described. The difference between this embodiment and the first specific embodiment is that the seed tube 2 is made of stainless steel. The function of such a design is to facilitate the processing of the smooth inner wall of the upper seed tube, and the installation and use are more convenient and the cost is lower. Other components and connection methods are the same as any one of the first to seventh specific embodiments.

[0034] Specific Embodiment Nine: In combination with Figures 1 to 4 This embodiment is described. The difference between this embodiment and the first specific embodiment is that the first hanging ear 1-2 is installed on the outer side wall of the upper seed tube 1 by welding. The purpose of such a design is to facilitate processing. Other components and connection methods are the same as any one of the first to eighth specific embodiments.

[0035] Specific Embodiment Ten: In combination with Figures 1 to 4 This embodiment is described. The difference between this embodiment and the first specific embodiment is that the second hanging ear 2-5 is installed on the outer side wall of the seed tube 2 by welding. The purpose of such a design is to facilitate processing. Other components and connection methods are the same as any one of the first to eighth specific embodiments.

[0036] In combination with Figures 1 to 4 The working principle of the present utility model is described:

[0037] Under the action of positive air pressure, after the seeds enter the seed discharging pipe from the seed inlet, the seeds are continuously pushed forward by the air pressure, avoiding blockage of the seed pipe, forcing the seeds to fall along the side wall of the seed pipe, and the remaining positive air pressure blows the seeds to the soil. The inner diameter of the lower seed pipe is smaller than that of the existing conventional seed discharging pipe. The seeds need to be pneumatically conveyed through the seed discharging pipe. Due to its smaller cross-sectional area and the pneumatic action, the contour size of the seeds has a high matching degree with the inner diameter cross-sectional area of the seed discharging pipe. The reduction of the cross-sectional area of the seed discharging pipe is accompanied by an increase in air pressure, and the running trajectory of the seeds is more stable than that of the existing seed discharging pipe. The collision probability between the seeds and the pipe wall is reduced, thereby improving the sowing accuracy and germination rate. The J-shaped seed channel has a certain buffering effect on the air flow and further stabilizes the movement trajectory of the seeds, thereby ensuring that the seed landing spacing is consistent.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An air-blown segmented seeding tube, characterized in that The invention comprises an upper seeding tube (1), a corrugated tube (3), a lower seeding tube (2) and a connecting piece (4); the upper tube opening of the lower seeding tube (2) is detachably connected to the lower tube opening of the upper seeding tube (1) through the corrugated tube (3); the upper end of the upper seeding tube (1) is provided with a connecting piece (4); an external seeding machine monitor is installed on the upper end of the upper seeding tube (1) through the connecting piece (4); the upper seeding tube (1) and the lower seeding tube (2) are both provided with smooth inner walls; the upper tube opening of the upper seeding tube (1) is an air inlet and is used for feeding seeds; the lower tube opening of the lower seeding tube (2) is an air outlet and is used for discharging seeds; the inner diameter size of the upper seeding tube (1) is the same as the inner diameter size of the lower seeding tube (2); and the inner diameter size range of the lower seeding tube (2) is 17 mm-19 mm.

2. The air-blown segmented seeding tube according to claim 1, characterized in that: The upper seeding tube (1) comprises a first straight tube section (1-1) and a first hanging ear (1-2), wherein the first hanging ear (1-2) is mounted on the outer side wall of the first straight tube section (1-1), and the upper tube opening of the upper seeding tube (1) is sleeved on the seed outlet of an external seeding device.

3. The air-blown segmented seeding tube according to claim 2, characterized in that: The overall shape of the lower seed pipe (2) is J-shaped. The lower seed pipe (2) comprises a second straight pipe segment (2-1), a first circular arc transition pipe segment (2-2), a second circular arc transition pipe segment (2-3) and a circular arc pipe segment (2-4). The second straight pipe segment (2-1), the first circular arc transition pipe segment (2-2), the second circular arc transition pipe segment (2-3) and the circular arc pipe segment (2-4) are connected end to end in sequence.

4. The air-blown segmented seeding tube according to claim 3, characterized in that: The cross-sectional shape of the upper seed tube (1) is circular.

5. The air-blown segmented seeding tube according to claim 3, characterized in that: The cross-section of the seed lowering tube (2) is in the shape of a circular ring.

6. The air-blown segmented seeding tube according to claim 3, characterized in that: The lower seed tube (2) also includes a second hanging ear (2-5), and the second hanging ear (2-5) is installed on the outer side wall of the circular arc tube section (2-4).

7. The air-blown segmented seeding tube according to claim 6, characterized in that: The upper seeding tube (1) is made of stainless steel.

8. The air-blown segmented seeding tube according to claim 6, characterized in that: The seeding tube (2) is made of stainless steel.

9. The air-blown segmented seeding tube according to claim 8, characterized in that: The first hanging ear (1-2) is installed on the outer side wall of the upper seed tube (1) by welding.

10. The air-blown segmented seeding tube according to claim 9, characterized in that: The second hanging ear (2-5) is installed on the outer side wall of the lower seed tube (2) by welding.

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