Quantitative discharging structure and seeder thereof

Abstract

The utility model relates to the technical field of seeding machines, and discloses a quantitative blanking structure and a seeding machine comprising the same. The blocking structure is arranged in the inner pipe cavity and used for blocking the feeding port, the blocking structure comprises blocking balls, a limiting plate, connecting rods and a guiding body, the limiting plate is fixedly connected with the inner pipe, one side of the limiting plate is elastically connected with the two connecting rods, the blocking balls are fixedly installed at the end of each connecting rod and right face the feeding port, and the guiding body is fixedly arranged in the outer pipe cavity. By arranging the blocking beads, when the inner pipe moves upwards, the two feeding ports are gradually staggered, the connecting rod is pushed by the reset reed to slide in the sliding channel, then the two blocking beads move reversely until the two blocking beads enter the corresponding feeding ports, the diameter of the blocking beads is larger than that of the feeding ports, and the feeding ports can be sealed; the probability that the materials are located in the two feeding ports and are sheared due to movement of the inner pipe is reduced, and the seeds and the fertilizer are prevented from being damaged.

Description

Technical Field

[0001] This utility model relates to the field of seeder technology, and in particular to a quantitative feeding structure and a seeder thereof. Background Technology

[0002] To address the various drawbacks of traditional sowing methods, a variety of agricultural seeders have emerged.

[0003] The prior art discloses an agricultural seeder (publication number: CN112772054B), which includes a frame and several rollers set at the bottom of the frame. From top to bottom, the frame is provided with a drive mechanism and a digging mechanism for digging holes. The digging mechanism includes several digging blades rotatably connected to the drive mechanism. The digging blades and the drive mechanism are provided with elastic reset members. When the elastic reset members are in their natural state, the ends of all the digging blades away from the drive mechanism move closer together to form an inverted pyramid shape. A seed storage tank is fixedly connected to the frame. An intermittent feeding mechanism is provided between the seed storage tank and the digging mechanism. A quantitative control unit for controlling the amount of seeds is provided between the drive mechanism and the intermittent feeding mechanism.

[0004] In existing technologies, feeding is mainly achieved by aligning the feed inlets on two pipes. However, when the two feed inlets are misaligned, there is a lack of shielding for the feed inlets, and seeds or fertilizer may remain inside the feed inlets. As the two feed inlets are misaligned, the inner and outer pipes may squeeze the seeds or fertilizer, causing external damage. For seeds, this will affect the germination rate, and for fertilizer, it may damage the outer coating of the fertilizer, thus affecting the fertilizer release time.

[0005] Therefore, we propose a quantitative feeding structure and its seeder. Utility Model Content

[0006] The present invention mainly addresses the technical problem that the feed inlet may cut off seeds or fertilizer, and provides a quantitative feeding structure and its seeder.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a quantitative feeding structure and its seeder, comprising:

[0008] The outer tube and the feed tube are provided. Two feed tubes are fixedly connected to the outer wall of the outer tube. An inner tube is slidably connected inside the cavity of the outer tube. A pusher cylinder is provided above the inner tube to push the inner tube downward. Two feed ports facing the feed tubes are opened on the walls of the outer tube and the inner tube respectively.

[0009] A blocking structure is installed inside the inner tube to block the feed inlet. The blocking structure includes a baffle bead, a limiting plate, a connecting rod, and a guide body. The limiting plate is fixedly connected to the inner tube. Two connecting rods are elastically connected to one side of the limiting plate. A baffle bead is fixedly installed at the end of each connecting rod, with the baffle bead facing the feed inlet. The guide body is fixedly installed inside the outer tube and can push the two connecting rods closer to each other.

[0010] In a preferred embodiment of this utility model, the sealing structure further includes a reset spring and a sliding channel. The limiting plate has a sliding channel, and the connecting rod is slidably disposed in the sliding channel. Two reset springs are fixedly connected to the side wall of the limiting plate, and the reset springs can push the connecting rod closer to the feed inlet.

[0011] In a preferred embodiment of this utility model, the limiting plate forms a rectangular plate structure and is fixedly installed on the inner wall of the inner tube. The stop bead is a sphere, and the end of the connecting rod is fixedly connected to the spherical surface of the stop bead. The connecting rod forms an L-shaped rod and extends inclined towards the middle position of the limiting plate.

[0012] In a preferred embodiment of this utility model, the guide body forms a rod structure with a Y-shaped cross-section, and a trapezoidal groove is formed at the top of the guide body, with two connecting rods extending into the groove of the guide body.

[0013] In a preferred embodiment of this utility model, the reset spring is a rectangular rod that extends from the end of the limiting plate toward the center.

[0014] As a preferred embodiment of the present invention, the sealing structure further includes a vertical shaft and an auger. The auger is fixedly connected to the vertical shaft, the vertical shaft is fixedly connected to the outer tube, the guide body is fixedly installed at the top of the vertical shaft, the auger is spiral-shaped, and the auger extends into the cavity of the inner tube.

[0015] In a preferred embodiment of this utility model, the upper end of the inner tube is sealed, the output shaft of the push cylinder is fixedly connected to the top of the inner tube, and a connecting seat for installation is fixedly provided on the outer wall of the outer tube.

[0016] A seeder includes a carrier with wheels at the bottom and a seed bin and a fertilizer bin fixedly mounted on the top of the carrier. The bottom of the carrier has all the aforementioned quantitative feeding structures. An outer tube is fixedly installed to the carrier by screws. The seed bin and fertilizer bin are respectively connected to two feeding pipes. A push cylinder is fixedly installed to the carrier.

[0017] Beneficial effects

[0018] This utility model provides a quantitative feeding structure and its seeder. It has the following beneficial effects:

[0019] 1. This quantitative feeding structure and its seeder, by setting baffle beads, when the inner tube moves upward, the two feed ports gradually misalign. The reset spring pushes the connecting rod to slide in the sliding channel, and then the two baffle beads move in opposite directions until they enter the corresponding feed ports. The diameter of the baffle beads is larger than the diameter of the feed ports, which can seal the feed ports and reduce the probability of the material being sheared by the movement of the inner tube when it is located in the two feed ports, thus preventing damage to seeds and fertilizers.

[0020] 2. This quantitative feeding structure and its seeder, when the inner tube moves upward, pushes the connecting rod through the reset spring to reset the stop bead and block the feed inlet. When the inner tube moves downward, the groove of the guide body squeezes the two connecting rods closer to each other, thereby making the two stop beads closer to each other. It can automatically open or seal the feed inlet according to the position change of the inner tube, without the need for an additional drive structure. It is reasonably designed and easy to maintain later.

[0021] 3. In this quantitative feeding structure and its seeder, seeds and fertilizer enter the inner cavity from two symmetrically positioned inlets and fall. By setting up an auger to guide the seeds and fertilizer, the seeds and fertilizer mix during the falling process. After the seeds and fertilizer fall into the soil, they are closer together, ensuring that the fertilizer nourishes the seeds. Compared with the existing technology that directly discharges seeds and fertilizer, the landing point of seeds and fertilizer in this solution tends to be suppressed, reducing the loss of fertilizer effectiveness due to the distance from the seeds.

[0022] 4. The quantitative feeding structure and its seeder, by setting the above-mentioned quantitative feeding structure, enable the entire seeder to have the functions of quantitative fertilization and sowing, integrating fertilization and sowing, making the structure more compact, ensuring the relative integrity of seeds and fertilizers during the feeding process, thereby ensuring the germination rate of seeds, and ensuring that seeds and fertilizers are mixed evenly and the landing points tend to be consistent, thus ensuring fertilizer efficiency.

[0023] 5. This quantitative feeding structure and its seeder uses a pusher cylinder to push the inner tube to move radially within the cavity of the outer tube. When the feed inlets on the walls of the outer and inner tubes are aligned, seeds and fertilizer can enter the cavities of the outer and inner tubes through the two feed pipes. When the feed inlets on the walls of the outer and inner tubes are misaligned, feeding stops. Quantitative feeding can be achieved through the reciprocating motion of the inner tube. The structure is simple, the quantitative feeding effect is good, and the feeding is stable. Attached Figure Description

[0024] Figure 1 This is one of the overall perspective views of this utility model;

[0025] Figure 2 This is the second overall perspective view of the present utility model;

[0026] Figure 3 This is a partial cross-sectional view of the outer tube and inner tube of this utility model;

[0027] Figure 4 This is a perspective view of the sealing structure of this utility model;

[0028] Figure 5 This is a perspective view of the guide body of this utility model;

[0029] Figure 6 This is a schematic diagram of the installation of the stop ball and the limit plate.

[0030] Legend: 10. Outer tube; 11. Feed tube; 12. Inner tube; 13. Push cylinder; 14. Feed inlet; 15. Vertical shaft; 16. Screw; 20. Stop bead; 21. Limiting plate; 22. Connecting rod; 23. Guide body; 24. Reset spring; 25. Sliding channel. Detailed Implementation

[0031] A quantitative feeding structure and its seeder, such as Figure 1 and Figure 2 As shown, it includes:

[0032] The outer tube 10 and the feed tube 11 are fixedly connected to the outer wall of the outer tube 10. The inner tube 12 is slidably connected inside the cavity of the outer tube 10. The upper part of the inner tube 12 is provided with a push cylinder 13 to push the inner tube 12 downward. The outer tube 10 and the inner tube 12 each have two feed ports 14 facing the feed tube 11. The upper end of the inner tube 12 is sealed. The output shaft of the push cylinder 13 is fixedly connected to the top of the inner tube 12. The outer wall of the outer tube 10 is fixedly provided with a connecting seat for installation.

[0033] In this scheme, the inner tube 12 is radially displaced within the cavity of the outer tube 10 by the pusher cylinder 13. When the feed inlets 14 on the walls of the outer tube 10 and the inner tube 12 are aligned, seeds and fertilizer can enter the cavities of the outer tube 10 and the inner tube 12 from the two feed pipes 11. When the feed inlets 14 on the walls of the outer tube 10 and the inner tube 12 are misaligned, feeding stops. Quantitative feeding can then be achieved through the reciprocating motion of the inner tube 12. The structure is simple, the quantitative feeding effect is good, and the feeding is stable.

[0034] like Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, a blocking structure is installed inside the inner tube 12 to block the feed inlet 14. The blocking structure includes a baffle 20, a limiting plate 21, a connecting rod 22, and a guide 23. The limiting plate 21 is fixedly connected to the inner tube 12. Two connecting rods 22 are elastically connected to one side of the limiting plate 21. A baffle 20 is fixedly installed at the end of each connecting rod 22, with the baffle 20 facing the feed inlet 14. The guide 23 is fixedly installed inside the outer tube 10 and can push the two connecting rods 22 closer together. The blocking structure also includes a reset spring 24 and a sliding channel 25. The limiting plate 21 has a sliding channel 25, and the connecting rods 22 are slidably installed in the sliding channel 25. Two reset springs 24 are fixedly connected to the side wall of the inner tube 12. The reset springs 24 can push the connecting rod 22 closer to the feed port 14. The limiting plate 21 forms a rectangular plate structure and is fixedly installed on the inner wall of the inner tube 12. The stop bead 20 is a ball and the end of the connecting rod 22 is fixedly connected to the spherical surface of the stop bead 20. The connecting rod 22 forms an L-shaped rod and extends inclined towards the middle position of the limiting plate 21. The guide body 23 forms a rod structure with a Y-shaped cross section and a trapezoidal groove at the top of the guide body 23. The two connecting rods 22 extend into the groove of the guide body 23. The reset springs 24 are rectangular rods and extend from the end of the limiting plate 21 towards the center position.

[0035] In this design, considering that the movement of the feed inlets 14 on the inner tube 12 and outer tube 10 walls is continuous, that is, the misalignment of the two aligned feed inlets 14 is gradual separation, in order to reduce the amount of material entering during the movement of the inner tube 12, baffle beads 20 are set. When the inner tube 12 moves upward, the two feed inlets 14 gradually misalign. The reset spring 24 pushes the connecting rod 22 to slide in the sliding channel 25, and then the two baffle beads 20 move in opposite directions until they enter the corresponding feed inlet 14. The diameter of the baffle beads 20 is larger than the diameter of the feed inlet 14, which can seal the feed inlet 14 and reduce the probability of the material being sheared by the movement of the inner tube 12 when it is in the two feed inlets 14, thus preventing damage to the seeds and fertilizer.

[0036] When the inner tube 12 moves upward, the reset spring 24 pushes the connecting rod 22 to reset the stop bead 20 and block the feed inlet 14. When the inner tube 12 moves downward, the groove of the guide body 23 squeezes the two connecting rods 22 closer together, thereby making the two stop beads 20 closer together. It can automatically open or seal the feed inlet 14 according to the position change of the inner tube 12 without the need for an additional drive structure. The design is reasonable and easy to maintain later.

[0037] To ensure that the feed inlet 14 does not cut the seeds or fertilizer, the feed inlet 14 on the wall of the outer tube 10 can be set as a rectangular groove, and the feed inlet 14 on the wall of the inner tube 12 can be circular. With the help of the resettable baffle 20, the baffle 20 can push the material in the feed inlet 14 on the wall of the inner tube 12 into the feed inlet of the outer tube 10, thereby improving the jamming phenomenon. Secondly, the edge of the feed inlet 14 is chamfered.

[0038] like Figure 3 and Figure 4 As shown, the sealing structure also includes a vertical shaft 15 and an auger 16. The auger 16 is fixedly connected to the vertical shaft 15, the vertical shaft 15 is fixedly connected to the outer tube 10, the guide body 23 is fixedly installed at the top of the vertical shaft 15, the auger 16 is spiral-shaped, and the auger 16 extends into the cavity of the inner tube 12.

[0039] In this scheme, seeds and fertilizer enter the inner tube 12 cavity through two symmetrically positioned inlets 14 and fall. By setting up an auger 16 to guide the seeds and fertilizer, the seeds and fertilizer mix during the falling process. After the seeds and fertilizer fall into the soil, they are closer together, which ensures that the fertilizer nourishes the seeds. Compared with the existing technology of directly discharging seeds and fertilizer, the landing point of seeds and fertilizer in this scheme tends to be suppressed, reducing the loss of fertilizer effectiveness due to the distance from the seeds.

[0040] (Not shown in the figure) A seeder includes a carrier with wheels at the bottom and a seed bin and fertilizer bin fixedly mounted on the top. The bottom of the carrier has all the aforementioned quantitative feeding structures. An outer tube 10 is fixedly installed to the carrier with screws. The seed bin and fertilizer bin are respectively connected to two feeding pipes 11. A push cylinder 13 is fixedly installed to the carrier. By setting the aforementioned quantitative feeding structure, the entire seeder has the functions of quantitative fertilization and sowing, integrating fertilization and sowing, making the structure more compact. During the feeding process, the relative integrity of seeds and fertilizer can be ensured, thereby ensuring the germination rate of seeds. Seeds and fertilizer are mixed evenly and the landing point tends to be consistent, ensuring fertilizer efficiency.

[0041] The working principle of this utility model is as follows: A power source, such as a lithium battery, should be installed on the carrier, as well as a controller. The push cylinder 13 is electrically connected to the controller. The controller controls the push cylinder 13 to push the inner tube 12 to reciprocate. The push cylinder 13 pushes the inner tube 12 to move radially within the cavity of the outer tube 10. When the feed inlets 14 on the walls of the outer tube 10 and the inner tube 12 are aligned, seeds and fertilizers can enter the cavities of the outer tube 10 and the inner tube 12 from the two feed pipes 11. When the feed inlets 14 on the walls of the outer tube 10 and the inner tube 12 are misaligned, feeding stops. In this way, quantitative feeding can be achieved through the reciprocating motion of the inner tube 12.

[0042] As the inner tube 12 moves upward, the two feed ports 14 gradually shift. The reset spring 24 pushes the connecting rod 22 to slide within the sliding channel 25, and the two baffles 20 move in opposite directions until they enter the corresponding feed ports 14. The diameter of the baffles 20 is larger than the diameter of the feed ports 14, which can seal the feed ports 14 and reduce the probability that the material will be sheared by the movement of the inner tube 12 when it is located in the two feed ports 14. The seeds and fertilizers enter the cavity of the inner tube 12 from the two feed ports 14 in symmetrical positions and fall down. By setting the auger 16 to guide the seeds and fertilizers, the seeds and fertilizers mix during the falling process, and the seeds and fertilizers are closer together after falling into the soil.

[0043] The feed inlet 14 on the wall of the outer tube 10 is set as a rectangular groove, and the feed inlet 14 on the wall of the inner tube 12 is circular. With the help of the resettable baffle 20, the baffle 20 can push the material in the feed inlet 14 on the wall of the inner tube 12 into the feed inlet of the outer tube 10, thereby improving the material jamming phenomenon.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dosing structure, characterized by, The utility model relates to a quantitative feeding device for seed and fertilizer, which comprises an outer tube (10) and a feeding tube (11), the outer wall of the outer tube (10) is fixedly connected with two feeding tubes (11), an inner tube (12) is slidably connected in the cavity of the outer tube (10), a push cylinder (13) is arranged above the inner tube (12) to push the inner tube (12) to move downward, two feeding ports (14) are formed in the wall surface of the outer tube (10) and the inner tube (12) and face the feeding tube (11), a blocking structure is arranged in the cavity of the inner tube (12) to shield the feeding port (14), the blocking structure comprises a stop bead (20), a limiting plate (21), a connecting rod (22) and a guide body (23), the limiting plate (21) is fixedly connected with the inner tube (12), two connecting rods (22) are elastically connected to one side of the limiting plate (21), a stop bead (20) is fixedly arranged at the end of each connecting rod (22), the stop bead (20) faces the feeding port (14), the guide body (23) is fixedly arranged in the cavity of the outer tube (10), and the guide body (23) can push the two connecting rods (22) to move close to each other. The blocking structure further comprises a reset spring (24) and a sliding channel (25), the limiting plate (21) is provided with the sliding channel (25), the connecting rod (22) is slidably arranged in the sliding channel (25), two reset springs (24) are fixedly connected to the side wall of the limiting plate (21), and the reset spring (24) can push the connecting rod (22) to move close to the feeding port (14). The limiting plate (21) forms a rectangular plate structure, the limiting plate (21) is fixedly arranged on the inner wall of the inner tube (12), the stop bead (20) is a spherical body, the end of the connecting rod (22) is fixedly connected with the spherical surface of the stop bead (20), the connecting rod (22) forms an L-shaped rod body, and the connecting rod (22) extends obliquely toward the middle position of the limiting plate (21).

2. The quantitative dosing structure according to claim 1, characterized in that: The guide body (23) forms a rod body structure with a Y-shaped cross section, the top of the guide body (23) forms a trapezoidal groove, and the two connecting rods (22) extend into the groove of the guide body (23).

3. The quantitative dosing structure according to claim 1, characterized in that: The reset spring (24) is a rectangular rod body, and the reset spring (24) extends from the end of the limiting plate (21) toward the central position.

4. The quantitative dosing structure according to claim 1, characterized in that: The blocking structure further comprises a vertical shaft (15) and an auger (16), the auger (16) is fixedly connected with the vertical shaft (15), the vertical shaft (15) is fixedly connected with the outer tube (10), the guide body (23) is fixedly arranged at the top end of the vertical shaft (15), the auger (16) is in a spiral shape, and the auger (16) extends into the cavity of the inner tube (12).

5. The quantitative dosing structure according to claim 2, characterized in that: The top end of the inner tube (12) is sealed, the output shaft of the push cylinder (13) is fixedly connected with the top of the inner tube (12), and the outer wall of the outer tube (10) is fixedly provided with a connecting seat for mounting.

6. The quantitative dosing structure according to claim 1, wherein: The bottom of the carrier is provided with the quantitative feeding device according to any one of claims 1-6, the outer tube (10) is fixedly arranged on the carrier by means of screws, the seed bin and the fertilizer bin are respectively connected with the two feeding tubes (11), and the push cylinder (13) is fixedly arranged on the carrier.

7. The quantitative dosing structure according to claim 1, wherein: ​ 8. A seeding machine comprising a carrier, the bottom of which is provided with wheels, the top of which is fixedly provided with a seed bin and a fertilizer bin for storage, characterized in that: ​

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