Roller of fruit and vegetable seeder

Abstract

The utility model discloses a fruit and vegetable seeder roller, which relates to the technical field of seeders, and comprises an air cylinder and an outer cylinder which are coaxially arranged, one end of the ring surface of the outer cylinder is provided with transmission teeth which are uniformly distributed along the circumferential direction of the outer cylinder, and the ring surface of the outer cylinder is provided with a plurality of rows of seed suction holes which are uniformly distributed along the circumferential direction of the outer cylinder. Two partition plates are fixedly connected to the outer ring face of the inflator, a first air cavity and a second air cavity which are not communicated with each other are formed in the inflator, the first air cavity and the second air cavity are connected with an air suction pipe and an air inlet pipe on the end face of the inflator respectively, the first air cavity is communicated with an air suction cavity between the two partition plates, and the second air cavity is communicated with an air blowing cavity between the two partition plates. The outlet width of the blowing cavity is larger than the diameter of the seed suction holes and smaller than the distance between the two rows of seed suction holes. According to the fruit and vegetable seeder roller adopting the structure, the outer roller body is simple in structure, and the outer roller body is convenient to clean and maintain.

Description

Technical Field

[0001] This utility model relates to the field of seeder technology, and in particular to a fruit and vegetable seeder roller. Background Technology

[0002] In modern mechanized agricultural production, seeders are essential. Seeders come in two types: mechanical and pneumatic. Mechanical seeders have poor sowing precision and are less commonly used. Pneumatic seeders, on the other hand, are less demanding in terms of seed shape and can achieve a sowing precision of 1-2 seeds per hole, making them widely used. Pneumatic seeders use the conversion of positive and negative air pressure to adsorb and deliver seeds into the seedling trays.

[0003] The main structure of existing pneumatic seeders includes a roller mounted on a shaft and an air exchange device. The roller has a relatively complex structure. For example, in Chinese patent application number 201220001602.5, the roller not only has seed suction holes but also several positive and negative pressure through holes connected to the seed suction holes. The complex roller structure greatly increases the manufacturing cost of the roller.

[0004] To solve the above problems, a new type of fruit and vegetable planter roller is needed. Summary of the Invention

[0005] The purpose of this invention is to provide a fruit and vegetable planter roller with a simple structure that is easy to manufacture.

[0006] To achieve the above objectives, this utility model provides a fruit and vegetable planter roller, comprising an air cylinder and an outer cylinder body arranged coaxially. Both ends of the outer cylinder body are rotatably and sealingly connected to the outer annular surface of the air cylinder. One end of the outer annular surface of the outer cylinder body is provided with transmission teeth evenly distributed along its circumferential direction. The annular surface of the outer cylinder body is provided with several rows of seed suction holes evenly distributed along its circumferential direction. Each seed suction hole contains a suction nozzle. Two partition plates are fixedly connected to the outer annular surface of the air cylinder. Both partition plates are arranged along the axial direction of the air cylinder, and the edges of the two partition plates are... The air cylinder is movably and sealed to the inner wall of the outer cylinder. The air cylinder has a first air chamber and a second air chamber that are not interconnected. The first air chamber and the second air chamber are respectively connected to the suction pipe and the inlet pipe on the end face of the air cylinder. The first air chamber is connected to the suction chamber between the two partition plates through a first through hole on the annular surface of the air cylinder. The second air chamber is connected to the blowing chamber between the two partition plates through a second through hole on the annular surface of the air cylinder. The outlet width of the blowing chamber is greater than the diameter of the seed suction hole and less than the distance between the two rows of seed suction holes.

[0007] Preferably, the edges of the partition plates are provided with rubber edging strips.

[0008] Preferably, the outer cylinder includes a first semi-cylinder and a second semi-cylinder. The connecting surfaces of the first semi-cylinder and the second semi-cylinder are respectively provided with a sealing connecting groove and a protrusion. The protrusion is adapted to the structure of the sealing connecting groove, and a rubber layer is provided on the outer surface of the protrusion. Connecting ears are provided on both end faces of the first semi-cylinder and the second semi-cylinder. The connecting ears on the first semi-cylinder are fixedly connected to the connecting ears on the second semi-cylinder by double-ended bolts. Both ends of the outer ring surface of the air cylinder are provided with annular grooves arranged circumferentially. Semi-circular grooves adapted to the structure of the annular grooves are provided on the end faces of the first semi-cylinder and the second semi-cylinder.

[0009] Preferably, a rubber pad is provided inside the annular groove.

[0010] Preferably, the suction head of the suction nozzle is a hemisphere protruding from the surface of the outer cylinder. The suction nozzle has a cylindrical air hole, a connecting air cavity, and a cylindrical air cavity that are sequentially connected from the outer port to the inner port of the seed suction hole. The cylindrical air hole and the cylindrical air cavity are coaxially arranged with the seed suction hole. The two ends of the cylindrical air hole are respectively connected to the top of the suction head and the top of the connecting air cavity. The outer wall radius of the suction head is 1.5 mm, the diameter of the cylindrical air hole is 0.5 mm, the diameter of the cylindrical air cavity is 2.1 mm, and the cross-sectional dimension of the connecting air cavity gradually increases from its connection end with the cylindrical air hole to its connection end with the cylindrical air cavity.

[0011] Therefore, the fruit and vegetable planter roller of this utility model with the above-described structure has the following beneficial effects:

[0012] 1. The inner and outer cylinders of the roller are only provided with seed suction holes, which makes the roller structure simple and easy to manufacture.

[0013] 2. In the prior art, the positive and negative pressure through holes are replaced by air intake chambers and air blowing chambers. Compared with positive and negative pressure through holes, air intake chambers and air blowing chambers have larger spaces and are less prone to blockage.

[0014] 3. During use, only the outer cylinder rotates while the air cylinder does not rotate, making it convenient to connect the suction pipe and air inlet pipe on the air cylinder to the vacuum pump and blower respectively.

[0015] 4. The air passage inside the suction nozzle gradually decreases from the inner port to the outer port of the seed suction hole. Under a certain air pressure, the air pressure at the suction nozzle will increase rapidly as the hole diameter decreases, so the seeds are not easy to fall out of the suction port.

[0016] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the fruit and vegetable planter roller of this utility model;

[0018] Figure 2 This is a cross-sectional view of an embodiment of the fruit and vegetable planter roller of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the first semi-cylinder in the roller of the fruit and vegetable planter of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of an embodiment of the suction nozzle in the drum of the fruit and vegetable planter of this utility model.

[0021] Figure Labels

[0022] 1. Air cylinder; 2. Outer cylinder; 21. First semi-cylinder; 22. Second semi-cylinder; 23. Connecting lug; 24. Double-ended bolt; 3. Transmission gear; 4. Seed suction hole; 5. Suction nozzle; 6. Divider plate; 7. First air chamber; 8. Second air chamber; 9. Suction pipe; 10. First through hole; 11. Suction chamber; 12. Second through hole; 13. Air blowing chamber; 14. Sealing connection groove; 15. Cylindrical air hole; 16. Connecting air chamber; 17. Cylindrical air chamber. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0024] Example

[0025] like Figure 1-4As shown, a fruit and vegetable planter roller includes an air cylinder 1 and an outer cylinder 2 arranged coaxially. Both ends of the outer cylinder 2 are rotatably and sealed to the outer annular surface of the air cylinder 1. One end of the outer annular surface of the outer cylinder 2 is provided with transmission teeth 3 evenly distributed along its circumference. The transmission teeth 3 are used to connect with an external power device, such as a drive gear connected to a motor, thereby realizing the rotation of the outer cylinder 2. Several rows of seed suction holes 4 are evenly distributed along their circumference on the annular surface of the outer cylinder 2. Each seed suction hole 4 contains a suction nozzle 5. The suction nozzle 5 has a hemispherical head protruding from the surface of the outer cylinder 2. Inside the suction nozzle 5 are cylindrical air holes 15, a connecting air cavity 16, and a cylindrical air cavity 17, sequentially connected from the outer port to the inner port of the seed suction hole 4. Both the cylindrical air holes 15 and the cylindrical air cavities 17 are coaxially arranged with the seed suction holes 4. The two ends of the cylindrical air holes 15 are connected to the top of the suction nozzle 5 and the top of the connecting air cavity 16, respectively. The outer radius of the suction nozzle 5 is 1.5 mm, the diameter of the cylindrical air hole 15 is 0.5 mm, and the diameter of the cylindrical air cavity 17 is 2.1 mm. The cross-sectional dimensions of the air cavity gradually increase from its connection end with the cylindrical air hole to its connection end with the cylindrical air cavity. The air passage inside the suction nozzle 5 gradually decreases from the inner port to the outer port of the seed suction hole 4. Under a certain air pressure, the air pressure at the suction nozzle 5 will increase rapidly as the hole diameter decreases, thus preventing seeds from easily falling out of the suction port.

[0026] Two partition plates 6 are fixedly connected to the outer ring surface of the air cylinder 1. Both partition plates 6 are arranged along the axial direction of the air cylinder 1, and the edges of both partition plates 6 are movably and sealingly connected to the inner wall of the outer cylinder 2. The edges of the partition plates 6 are provided with rubber edging strips, which can increase the sealing between the partition plates 6 and the outer cylinder 2.

[0027] The air cylinder 1 has a first air chamber 7 and a second air chamber 8 that are not interconnected. The first air chamber 7 and the second air chamber 8 are connected to the suction pipe 9 and the inlet pipe on the end face of the air cylinder 1, respectively. The first air chamber 7 is connected to the suction chamber 11 between the two partition plates 6 through the first through hole 10 on the annular surface of the air cylinder 1. The second air chamber 8 is connected to the blowing chamber 13 between the two partition plates 6 through the second through hole 12 on the annular surface of the air cylinder 1. The outlet width of the blowing chamber 13 is greater than the diameter of the seed suction hole 4 and less than the distance between the two rows of seed suction holes 4, so that the blowing chamber 13 can only be connected to one row of seed suction holes 4.

[0028] The outer cylinder 2 includes a first semi-cylinder 21 and a second semi-cylinder 22. A sealing groove 14 and a protrusion are respectively provided on the connecting surfaces of the first semi-cylinder 21 and the second semi-cylinder 22. The protrusion is structurally compatible with the sealing groove 14, and a rubber layer is provided on the outer surface of the protrusion. The rubber layer increases the sealing performance between the protrusion and the sealing groove 14, thereby ensuring the sealing performance of the connection between the first semi-cylinder 21 and the second semi-cylinder 22. Both ends of the first semi-cylinder 21 and the second semi-cylinder 22 are provided with connecting ears 23. The connecting ears 23 on the first semi-cylinder 21 are fixedly connected to the connecting ears 23 on the second semi-cylinder 22 by double-ended bolts 24. The double-ended bolts 24 enable a detachable connection between the first semi-cylinder 21 and the second semi-cylinder 22. Tightening the nuts on the double-ended bolts 24 enables a fixed connection between the first semi-cylinder 21 and the second semi-cylinder 22. Unscrewing the nuts on the double-ended bolts 24 enables disassembly and separation between the first semi-cylinder 21 and the second semi-cylinder 22. Both ends of the outer ring surface of the air cylinder 1 are provided with annular grooves arranged circumferentially. The end faces of the first semi-cylinder 21 and the second semi-cylinder 22 are provided with semi-circular grooves that are adapted to the structure of the annular grooves. A rubber gasket is provided inside the annular groove, which can increase the sealing at the connection between the air cylinder 1 and the outer cylinder 2.

[0029] In use, the suction pipe 9 and the air inlet pipe are connected to the vacuum pump and the blower, respectively. The vacuum pump creates negative pressure at the first air chamber 7, the first through hole 10, the suction chamber 11, and the seed suction hole 4 connected to the suction chamber 11, thereby absorbing the seeds. The blower creates positive pressure at the second air chamber 8, the second through hole 12, the blowing chamber 13, and the seed suction hole 4 connected to the blowing chamber 13, thereby releasing the seeds. The outer cylinder 2 is driven to rotate by the drive gear meshing with the transmission gear 3. When the seed suction hole 4 moves to the position connected to the suction chamber 11, it can absorb the seeds. When the seed suction hole 4 moves to the position connected to the blowing chamber 13, it can blow the seeds out.

[0030] Therefore, the present invention provides a fruit and vegetable planter roller with the above-mentioned structure, which has a simple structure and is easy to manufacture.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A fruit and vegetable planter roller, characterized in that: The device includes a coaxially arranged air cylinder (1) and an outer cylinder (2). Both ends of the outer cylinder (2) are rotatably and sealed to the outer annular surface of the air cylinder (1). One end of the outer annular surface of the outer cylinder (2) is provided with transmission teeth (3) evenly distributed along its circumferential direction. The annular surface of the outer cylinder (2) is provided with several rows of seed suction holes (4) evenly distributed along its circumferential direction. Each seed suction hole (4) contains a suction nozzle (5). Two partition plates (6) are fixedly connected to the outer annular surface of the air cylinder (1). Both partition plates (6) are arranged along the axial direction of the air cylinder (1), and the edges of both partition plates (6) are movably and sealed to the inner wall of the outer cylinder (2). The cylinder (1) is provided with a first air chamber (7) and a second air chamber (8) that are not interconnected. The first air chamber (7) and the second air chamber (8) are respectively connected to the suction pipe (9) and the inlet pipe on the end face of the cylinder (1). The first air chamber (7) is connected to the suction chamber (11) between the two partition plates (6) through the first through hole (10) on the annular surface of the cylinder (1). The second air chamber (8) is connected to the blowing chamber (13) between the two partition plates (6) through the second through hole (12) on the annular surface of the cylinder (1). The outlet width of the blowing chamber (13) is greater than the diameter of the seed suction hole (4) and less than the distance between the two rows of seed suction holes (4).

2. The fruit and vegetable planter roller according to claim 1, characterized in that: The edges of the partition plate (6) are all provided with rubber edging strips.

3. The fruit and vegetable planter roller according to claim 2, characterized in that: The outer cylinder (2) includes a first semi-cylinder (21) and a second semi-cylinder (22). The connecting surfaces of the first semi-cylinder (21) and the second semi-cylinder (22) are respectively provided with a sealing connection groove (14) and a protrusion. The protrusion is adapted to the structure of the sealing connection groove (14), and a rubber layer is provided on the outer side of the protrusion. Both ends of the first semi-cylinder (21) and the second semi-cylinder (22) are provided with connecting ears (23). The connecting ears (23) on the first semi-cylinder (21) are fixedly connected to the connecting ears (23) on the second semi-cylinder (22) by double-headed bolts (24). Both ends of the outer ring surface of the air cylinder (1) are provided with an annular groove arranged along its circumference. The end faces of the first semi-cylinder (21) and the second semi-cylinder (22) are provided with a semi-circular groove adapted to the structure of the annular groove.

4. The fruit and vegetable planter roller according to claim 3, characterized in that: A rubber pad is provided inside the annular groove.

5. A fruit and vegetable planter roller according to claim 1, characterized in that: The suction nozzle (5) has a hemispherical head protruding from the surface of the outer cylinder (2). The suction nozzle (5) has a cylindrical air hole (15), a connecting air cavity (16), and a cylindrical air cavity (17) that are sequentially connected from the outer port to the inner port of the seed suction hole (4). The cylindrical air hole (15) and the cylindrical air cavity (17) are both coaxially arranged with the seed suction hole (4). The two ends of the cylindrical air hole (15) are... The nozzle (5) is connected to the top of the suction head and the top of the connecting air cavity (16) respectively. The outer wall radius of the suction head (5) is 1.5 mm, the diameter of the cylindrical air hole (15) is 0.5 mm, the diameter of the cylindrical air cavity (17) is 2.1 mm, and the cross-sectional dimensions of the connecting air cavity (16) gradually increase from its connection end with the cylindrical air hole (15) to its connection end with the cylindrical air cavity (17).

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