Drum-type hole tray seeder

Abstract

The utility model discloses a drum-type hole tray seeder, which belongs to the technical field of automatic seeding and comprises a case, a belt conveyor is arranged on the case, a high-pressure fan is arranged in the case, driving boxes are arranged on two sides of the upper surface of the belt conveyor, a seeding drum is rotatably arranged between the driving boxes, and the high-pressure fan is arranged in the high-pressure fan. Air flow guide plates are attached to the two ends of the seeding roller, a plurality of connecting air channels are formed in the seeding roller in a penetrating mode, a plurality of air holes are formed in the outer side face of the seeding roller, and when the connecting air channels are communicated with the negative pressure air channels, seeds are adsorbed to the air holes through negative pressure air, and the seeds are sown along with rotation of the seeding roller. The redundant adsorbed seeds are combed and swept off by the three-tooth comb and blown off by the cleaning pipe to fall back into the seed concentration box, automatic seeding is achieved, the high-pressure fan is integrated in the machine box, stable positive and negative pressure gas can be generated generally with the power of about 300 watts, the power is low, the efficiency is high, the whole power of the seeding machine is within 1000 watts, integration is achieved, and the seeding efficiency is high. And the work transition is very convenient.

Description

Technical Field

[0001] This utility model relates to the field of automatic seeding technology, specifically to a drum-type tray seeder. Background Technology

[0002] Tray seeding is a widely used new seedling raising method. Because pneumatic adsorption seeding does not damage seeds and has low requirements for seed shape, most current tray seeders adopt a pneumatic adsorption structure, mainly including needle suction seeders and drum seeders. Needle suction seeders mainly have disadvantages such as complex control systems and high manufacturing costs, while drum seeders have high seeding efficiency and are more widely used.

[0003] However, existing drum-type tray seeders have high power consumption, require vacuum pumps and air pumps to adsorb and sow seeds, and the total power of the machine is over 5000 watts. In addition, the machine has a split structure and requires external negative pressure and positive pressure air sources. At the same time, the vacuum filter is prone to clogging, and the negative pressure filter needs to be cleaned regularly, making it inconvenient to move the machine between work sites. Utility Model Content

[0004] The technical problem this invention aims to solve is that existing drum-type tray seeders have high power consumption, with a total power of over 5000 watts, and the machine has a split structure, making it inconvenient to move the machine between work sites.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a roller-type tray seeder, including a machine housing, a belt conveyor on the machine housing, a high-pressure blower inside the machine housing, a sowing device on the belt conveyor, the sowing device including mounting brackets located on both sides of the belt conveyor, a sowing roller rotatably mounted between the mounting brackets, airflow guide plates attached to both ends of the sowing roller, the airflow guide plates fixedly mounted on the mounting brackets, a seed collection box located between the mounting brackets and in front of the sowing roller, a plurality of connecting air passages penetrating the sowing roller, a plurality of air holes communicating with the connecting air passages on the outer side of the sowing roller, the air holes being evenly distributed in groups of two on the sowing roller, a negative pressure air passage matching the rotation direction of the sowing roller on the airflow guide plate, and two positive pressure air passages communicating with the connecting air passages at the lower position on the airflow guide plate.

[0006] As a further embodiment of this utility model, both the negative pressure inlet end and the positive pressure outlet end of the high-pressure blower are connected to an air chamber, and each air chamber is provided with several connection holes. A first flexible hose is connected between the negative pressure air passage and the connection hole on the negative pressure inlet end of the high-pressure blower, and a second flexible hose is connected between the positive pressure air passage and the connection hole on the positive pressure outlet end of the high-pressure blower.

[0007] As a further embodiment of this utility model, a connecting plate is provided on the upper part of the mounting bracket, and a seed blowing pipe is provided below the connecting plate. The seed blowing pipe is connected to the connecting hole on the positive pressure outlet end of the high-pressure blower. Several nozzles are evenly distributed below the seed blowing pipe, and several toothed combs are provided below the connecting plate and in front of the seed blowing pipe.

[0008] As a further embodiment of this utility model, a motor is provided in front of the mounting bracket, a rotating shaft is provided at both ends of the seeding roller, and the airflow guide plate is provided with a through hole that can accommodate the rotating shaft. One end of the rotating shaft extending out of the through hole is connected to the output end of the motor.

[0009] As a further embodiment of this utility model, both ends of the seeding roller are provided with flanges, and each flange is provided with a round hole communicating with the connecting air passage.

[0010] The advantages of this utility model compared with the prior art are as follows:

[0011] 1. By integrating the high-pressure blower into the casing, the high-pressure blower has low power, generally around 300 watts, which can generate stable positive and negative pressure gas. It has low power, high efficiency, and simple structure that requires no maintenance. The power of the entire seeder is less than 1000 watts, and the whole machine has no external equipment. It is an integrated unit, which makes it very convenient to move the machine to different locations.

[0012] 2. By setting up a sowing device, when the connecting air channel on the sowing drum is connected to the negative pressure air channel, the negative pressure gas will adsorb the seeds onto the air holes. As the sowing drum rotates, the excess seeds adsorbed will be swept off by the comb and blown off by the air jet from the seed blowing tube and fall back into the seed collection box, avoiding the situation of multiple seeds being adsorbed, realizing automatic sowing and high work efficiency. Attached Figure Description

[0013] Figure 1 This is a perspective view of the roller-type tray seeder of this utility model.

[0014] Figure 2 This is an exploded structural diagram of the sowing device of the roller-type tray seeder of this utility model.

[0015] Figure 3 This is a schematic diagram of the internal structure of the seeding device of the roller-type tray seeder of this utility model.

[0016] Figure 4 This is an enlarged schematic diagram of part A of the roller-type seed tray planter of this utility model.

[0017] Figure 5 This is a rear view schematic diagram of the airflow guide plate of the seeding device of the roller-type tray seeder of this utility model.

[0018] As shown in the figure: 1. Chassis; 2. Belt conveyor; 3. Negative pressure fan; 4. Flange; 5. Mounting bracket; 6. Airflow guide plate; 7. Seeding roller; 8. Seed collection box; 9. Connecting air duct; 10. Air hole; 11. Negative pressure air duct; 12. Positive pressure air duct; 13. Air chamber; 14. Connecting hole; 15. Hose 1; 16. Hose 2; 17. Connecting plate; 18. Seed blowing tube; 19. Toothed comb; 20. Motor; 21. Rotating shaft; 22. Through hole; 23. Round hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Combined with appendix Figure 1 , Figure 2 , Figure 3A drum-type tray seeder includes a housing 1, on which a belt conveyor 2 is mounted. A high-pressure blower 3 is housed inside the housing 1. A sowing device is mounted on the belt conveyor 2. The sowing device includes mounting brackets 5 located on both sides of the belt conveyor 2. A sowing drum 7 is rotatably mounted between the mounting brackets 5. Airflow guide plates 6 are attached to both ends of the sowing drum 7 and are fixedly mounted on the mounting brackets 5. A seed collection box 8 is located between the mounting brackets 5 and in front of the sowing drum 7. Several connecting air passages 9 are provided through the sowing drum 7. Flanges 4 are located at both ends of the sowing drum 7, and each flange 4 is equipped with... The seeding roller 7 has a circular hole 23 that communicates with the connecting air passage 9. The outer side of the seeding roller 7 is provided with several air holes 10 that communicate with the connecting air passage 9. The air holes 10 are evenly distributed on the seeding roller 7 in groups of two. The airflow guide plate 6 is provided with a negative pressure air passage 11 that matches the rotation of the seeding roller 7. At the lower position of the airflow guide plate 6, there are two positive pressure air passages 12 that communicate with the connecting air passage 9. After rotating a certain angle, the connecting air passage 9 first communicates with the first positive pressure air passage 12. Under the action of positive pressure air, the seeds are automatically sown. After continuing to rotate, it immediately communicates with the second positive pressure air passage 12 to blow air into the air hole a second time, which has a cleaning effect and prevents the seeds from clogging the air hole.

[0022] Combined with appendix Figure 3 , Figure 5 The negative pressure inlet and positive pressure outlet of the high-pressure blower 3 are both connected to an air chamber 13. Each air chamber 13 is provided with several connection holes 14. A hose 15 is connected between the negative pressure air passage 11 and the connection hole 14 on the negative pressure inlet of the high-pressure blower 3. A hose 2 16 is connected between the positive pressure air passage 12 and the connection hole 14 on the positive pressure outlet of the high-pressure blower 3. Two high-pressure blowers 3 can be set as needed. When precise sowing is required, two high-pressure blowers 3 can be set, one responsible for negative pressure to suck up seeds and the other responsible for positive pressure to blow away excess seeds.

[0023] Combined with appendix Figure 1 , Figure 4 A connecting plate 17 is provided on the upper part of the mounting bracket 5, and a seed blowing pipe 18 is provided below the connecting plate 17. The seed blowing pipe 18 is connected to the connecting hole 14 on the positive pressure outlet end of the high pressure blower 3. Several nozzles are evenly distributed below the seed blowing pipe 18. Several toothed combs 19 are provided below the connecting plate 17 and in front of the seed blowing pipe 18. The toothed combs 19 can sweep off excess seeds, and together with the nozzles below the seed blowing pipe 18, blow away the seeds that the toothed combs 19 could not sweep off.

[0024] Combined with appendix Figure 2The mounting bracket 5 is equipped with a motor 20 at the front, and the seeding roller 7 is equipped with a rotating shaft 21 at both ends. The airflow guide plate 6 is equipped with a through hole 22 that can accommodate the rotating shaft 21. One end of the rotating shaft 21 extending out of the through hole 22 is connected to the output end of the motor 20. The motor 20 drives the rotating shaft to rotate, and the rotating shaft drives the seeding roller 7 to rotate for adsorption and seeding. A spring can be sleeved on the rotating shaft 21, and pressure bearings are set at both ends of the spring to improve the sealing between the airflow guide plate 6 and the seeding roller 7.

[0025] In practical implementation, this invention first pours seeds into a seed collection box, then places seed trays on a belt conveyor for transport. Simultaneously, a high-pressure blower and motor are started. The high-pressure blower is integrated into the casing; it has low power, high efficiency, a simple structure, and requires no maintenance. The entire machine has no external equipment, making it highly integrated and convenient for relocation. The motor drives a rotating shaft, which in turn rotates the seeding drum. When the negative pressure air duct connects with the connecting air duct on the seeding drum, the negative pressure gas adsorbs the seeds onto the air pores. Furthermore, because the shape of the negative pressure air duct matches the rotation direction of the seeding drum, it can... This design ensures that the seeds on the multiple air vents are constantly being adsorbed before the connecting air duct connects to the positive pressure air duct. As the seeding drum rotates, the excess adsorbed seeds are swept off by the comb and blown off by the air jet from the seed blowing tube, falling back into the seed collection box. This prevents multiple seeds from being adsorbed and improves the accuracy of seeding. When the connecting air duct rotates to connect with the first positive pressure air duct, the seeds fall into the seed tray below, achieving automatic seeding. After the seeding drum continues to rotate, the connecting air duct then connects to the second positive pressure air duct, performing a secondary cleaning of the air vents to prevent any seeds from failing to fall and getting stuck in the air vents.

[0026] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A roller-type tray seeder, comprising a housing (1), wherein a belt conveyor (2) is mounted on the housing (1), characterized in that: The casing (1) is equipped with a high-pressure blower (3), and the belt conveyor (2) is equipped with a sowing device. The sowing device includes mounting brackets (5) located on both sides of the belt conveyor (2). A sowing roller (7) is rotatably mounted between the mounting brackets (5). Airflow guide plates (6) are attached to both ends of the sowing roller (7). The airflow guide plates (6) are fixedly mounted on the mounting brackets (5). A seed collection box is located between the mounting brackets (5) and in front of the sowing roller (7). (8) The seeding roller (7) is provided with several connecting air channels (9). The outer side of the seeding roller (7) is provided with several air holes (10) that communicate with the connecting air channels (9). The air holes (10) are evenly distributed in pairs on the seeding roller (7). The airflow guide plate (6) is provided with negative pressure air channels (11) that match the direction of the seeding roller (7). The airflow guide plate (6) is provided with two positive pressure air channels (12) that communicate with the connecting air channels (9) at the lower position.

2. The drum-type tray seeder according to claim 1, characterized in that: The negative pressure inlet end and the positive pressure outlet end of the high pressure blower (3) are both connected to an air chamber (13). Each air chamber (13) is provided with several connection holes (14). A first hose (15) is connected between the negative pressure air passage (11) and the connection hole (14) on the negative pressure inlet end of the high pressure blower (3). A second hose (16) is connected between the positive pressure air passage (12) and the connection hole (14) on the positive pressure outlet end of the high pressure blower (3).

3. The drum-type tray seeder according to claim 1, characterized in that: A connecting plate (17) is provided on the upper part of the mounting bracket (5), and a seed blowing pipe (18) is provided below the connecting plate (17). The seed blowing pipe (18) is connected to the connecting hole (14) on the positive pressure outlet end of the high pressure blower (3). Several nozzles are evenly distributed below the seed blowing pipe (18), and several toothed combs (19) are provided below the connecting plate (17) and in front of the seed blowing pipe (18).

4. The drum-type tray seeder according to claim 1, characterized in that: The mounting bracket (5) is equipped with a motor (20) in front, and the seeding roller (7) is equipped with a rotating shaft (21) at both ends. The airflow guide plate (6) is equipped with a through hole (22) that can accommodate the rotating shaft (21). One end of the rotating shaft (21) extending out of the through hole (22) is connected to the output end of the motor (20).

5. The drum-type tray seeder according to claim 1, characterized in that: Both ends of the seeding roller (7) are provided with flanges (4), and each flange (4) is provided with a round hole (23) that communicates with the connecting air passage (9).

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