Roller type seed sowing device

Abstract

The utility model discloses a roller type seed-metering device which comprises a rotating shaft, a seed suction roller and a seed-metering mechanism, the seed suction roller is mounted on the rotating shaft, a negative pressure cavity is formed in the seed suction roller, and seed suction holes are formed in the peripheral surface of the seed suction roller; the seed metering mechanism comprises a mounting frame and a partition plate, the mounting frame is rotationally mounted on the rotating shaft, the partition plate is mounted at the bottom of the mounting frame, and the partition plate is used for separating a seed suction hole in the bottom from the negative pressure cavity to generate a normal pressure area so as to complete seed metering; the seed suction roller can automatically suck pepper seeds, and the inner wall of the rotating seed suction roller can rotate relative to the partition plate through the mutual matching of the mounting frame and the partition plate, so that the partition plate can separate the seed suction holes in the bottom from the negative pressure cavity to generate a normal pressure area; compared with manual seeding at present, the automatic seeding device has the advantages that the seeding efficiency is improved, and the problems of high labor intensity and high labor cost of manual seeding are solved.

Description

Technical Field

[0001] The utility model relates to the field of seedling raising and sowing machines, in particular to a roller type seed metering device suitable for peppers. Background Art

[0002] Due to the characteristics of the thin and light outer shape structure of pepper seeds and the reasons such as the planting of farmers' scattered households, more than half of the pepper seedling raising still adopts the manual sowing method during the pepper seedling raising process, resulting in high labor intensity, high labor cost and low efficiency in the current pepper seedling raising work. Content of the Utility Model

[0003] The purpose of the utility model is to provide a roller type seed metering device, aiming to solve the problems mentioned above.

[0004] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0005] A roller type seed metering device, comprising:

[0006] A rotating shaft;

[0007] A seed suction roller cylinder, installed on the rotating shaft and internally provided with a negative pressure cavity, and seed suction holes are arranged on the outer peripheral surface of the seed suction roller cylinder;

[0008] A seed metering mechanism, comprising a mounting frame rotatably installed on the rotating shaft and a partition plate installed at the bottom of the mounting frame, the bottom end surface of the partition plate abuts against the inner wall of the seed suction roller cylinder, and is used to cut off part of the seed suction holes from the negative pressure cavity to generate an atmospheric pressure area to complete seed metering.

[0009] Preferably, a hollow ventilation channel is arranged inside the rotating shaft, and a ventilation branch is arranged on the rotating shaft and located in the negative pressure cavity.

[0010] Preferably, the mounting frame is rotatably installed on the rotating shaft through a bearing assembly.

[0011] Preferably, the mounting frame includes a mounting block, a bearing and a connecting rod;

[0012] An assembly port is arranged on the mounting block, the bearing is installed in the assembly port, the top end of the connecting rod is installed at the bottom end of the mounting block, and the bottom end of the connecting rod is installed on the partition plate.

[0013] Preferably, the number of the mounting frames is at least two.

[0014] Preferably, one end of the seed suction roller cylinder is installed on the rotating shaft through a key connection.

[0015] Preferably, the seed suction roller includes a first end cap, a cylinder body, and a second end cap. The first end cap is installed on one end of the cylinder body, and the second end cap is installed on the other end of the cylinder body.

[0016] Preferably, the number of the seed suction holes is several, and several seed suction holes are arranged in an array on the seed suction roller.

[0017] Preferably, the number of the ventilation branch paths is several, and several ventilation branch paths are arranged in an array on the rotating shaft.

[0018] Preferably, the seed suction holes are in a conical shape with a smaller outer diameter and a larger inner diameter.

[0019] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0020] In the present utility model, the rotating seed suction roller can automatically adsorb pepper seeds through the cooperation of the negative pressure cavity and the seed suction holes. Then, through the mutual cooperation of the mounting frame and the partition plate, the inner wall of the rotating seed suction roller can rotate relative to the partition plate. Thus, the partition plate can cut off some of the seed suction holes from the negative pressure cavity to generate an atmospheric pressure area. Furthermore, the pepper seeds on the seed suction holes at the position of the partition plate fall into the seedling tray under the action of gravity, completing automatic seed discharging. Compared with the current manual sowing, the sowing efficiency is improved, and the problems of high labor intensity and high labor cost in manual sowing are solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional view of the present utility model;

[0022] Figure 2 is a cross-sectional view of the present utility model;

[0023] Figure 3 is an exploded view of the present utility model.

[0024] Markings in the figure:

[0025] 1, rotating shaft; 101, ventilation channel; 102, ventilation branch path;

[0026] 2, seed suction roller; 200, negative pressure cavity; 201, seed suction hole;

[0027] 3, seed discharging mechanism; 301, mounting frame; 302, partition plate; 303, mounting block; 304, bearing; 305, connecting rod;

[0028] 4, atmospheric pressure area; 5, first end cap; 6, cylinder body; 7, second end cap. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0030] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "provided with", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] Referring to Figure 1 - Figure 2 , a roller type seed metering device for sowing crop seeds (for example: pepper seeds or seeds of other crops), the roller type seed metering device includes a rotating shaft 1, a seed suction roller 2, and a seed metering mechanism 3, wherein:

[0032] One end of the rotating shaft 1 can be connected to a driving mechanism, and the driving mechanism can drive the rotating shaft 1 to rotate clockwise or counterclockwise.

[0033] The seed suction roller 2 is installed on the rotating shaft 1. The rotating shaft 1 can penetrate into the interior of the seed suction roller 2 in a sealed manner. A negative pressure chamber 200 is provided inside the seed suction roller 2. Seed suction holes 201 are formed on the outer peripheral surface of the seed suction roller 2. The number of the seed suction holes 201 is several, and the several seed suction holes 201 are arranged on the seed suction roller 2 in an array.

[0034] Through the negative pressure chamber 200, the seed suction holes 201 can be made to have the ability to adsorb pepper seeds. At this time, the rotating rotating shaft 1 can drive the seed suction roller 2 to rotate together. Thus, while the several seed suction holes 201 on the outer surface of the seed suction roller 2 rotate with the seed suction roller 2, they can adsorb the pepper seeds at the bottom of the seed suction roller 2.

[0035] The seed metering mechanism 3 is provided inside the seed suction roller 2 and is used to discharge the pepper seeds adsorbed on the surface of the seed suction roller 2 to complete seed metering.

[0036] The seed metering mechanism 3 includes a mounting frame 301 and a partition plate 302. Both the mounting frame 301 and the partition plate 302 are located inside the seed suction roller 2. The mounting frame 301 is rotatably mounted on the rotating shaft 1, and the partition plate 302 is mounted at the bottom of the mounting frame 301. The bottom end surface of the partition plate 302 abuts against the inner wall of the seed suction roller 2. The length of the partition plate 302 is equal to the length of the inner cavity of the seed suction roller 2. The partition plate 302 is used to isolate some of the seed suction holes 201 from the negative pressure cavity 200 to generate an atmospheric pressure area 4 to complete seed metering.

[0037] In this embodiment, the rotating seed suction roller 2 can automatically adsorb pepper seeds through the cooperation of the negative pressure cavity 200 and the seed suction holes 201. When the pepper seeds are adsorbed onto a number of seed suction holes 201, the rotating shaft 1 and the seed suction roller 2 rotate clockwise together. At this time, the position of the mounting frame 301 rotatably mounted on the rotating shaft 1 remains relatively unchanged, and the inner wall of the rotating seed suction roller 2 can rotate relative to the partition plate 302. Thus, the partition plate 302 can isolate some of the seed suction holes 201 from the negative pressure cavity 200 to generate an atmospheric pressure area 4. Furthermore, the air pressure difference between the seed suction holes 201 at the position of the partition plate 302 and the negative pressure cavity 200 is zero, and the pepper seeds on the seed suction holes 201 at the position of the partition plate 302 fall into the seedling tray under the action of gravity, completing automatic seed metering. Compared with the current manual sowing, the sowing efficiency is improved, and the problems of high labor intensity and high labor cost in manual sowing are solved.

[0038] In a possible embodiment, as Figure 2 shown, in order to always maintain a negative pressure in the negative pressure cavity 200, a hollow ventilation channel 101 is provided inside the rotating shaft 1, and ventilation branches 102 are provided on the rotating shaft 1 and located in the negative pressure cavity 200. The number of ventilation branches 102 is several, and several ventilation branches 102 are arranged in an array on the rotating shaft 1.

[0039] In this embodiment, the ventilation channel 101 is connected to an external negative pressure fan through a pipeline, and the gas in the negative pressure cavity 200 can be evacuated along the ventilation branches 102 and the ventilation channel 101 to generate a negative pressure in the negative pressure cavity 200, thereby ensuring the seed suction of the seed suction holes 201 on the seed suction roller 2.

[0040] In a possible embodiment, as Figure 2 shown, the number of mounting frames 301 is at least two, and each mounting frame 301 is rotatably mounted on the rotating shaft 1 through a bearing assembly;

[0041] Regarding the specific structure of the mounting bracket 301, the mounting bracket 301 may include a mounting block 303, a bearing 304, and a connecting rod 305; an assembly port is provided on the mounting block 303, the bearing 304 is installed into the assembly port, and at the same time, the rotating shaft 1 is also inserted into the inner ring of the bearing 304. The top end of the connecting rod 305 is installed at the bottom end of the mounting block 303, and the bottom end of the connecting rod 305 is installed on the partition plate 302.

[0042] In this embodiment, through the cooperative installation of the mounting block 303, the bearing 304, and the connecting rod 305, the partition plate 302 can be rotatably installed on the rotating shaft 1, and the inner wall of the rotating seed suction roller 2 can rotate relative to the partition plate 302, thereby realizing the seed discharging of the pepper seeds at the bottom position of the partition plate 302.

[0043] In a possible embodiment, as Figure 3 shown, regarding the specific structure of the seed suction roller 2, the seed suction roller 2 includes an end cap one 5, a cylinder body 6, and an end cap two 7. The end cap one 5 is installed on one end of the cylinder body 6, the end cap two 7 is installed on the other end of the cylinder body 6, and both the end cap one 5 and the end cap two 7 are hermetically and fixedly installed at both ends of the cylinder body 6.

[0044] Regarding the sealing structure of the end cap one 5, the end cap two 7, and the cylinder body 6, specifically: a sealing ring one is provided at the outer edge of the end cap one 5, and the end cap one 5 is hermetically installed on one end of the cylinder body 6 through the sealing ring one. A sealing ring two is provided at the outer edge of the end cap two 7, and the end cap two 7 is hermetically installed on the other end of the cylinder body 6 through the sealing ring two. And two shoulder structures are provided at intervals on the rotating shaft 1, and both the end cap one 5 and the end cap two 7 are sleeved on the shoulder structures through the sealing ring components to ensure the sealing performance of the roller 2 installed on the rotating shaft 1 and guarantee the adsorption force of a plurality of seed suction holes 201.

[0045] In addition, one end of the seed suction roller 2 is installed on the rotating shaft 1 through a key connection. Specifically, the end cap two 7 is installed on the rotating shaft 1 through a key connection, that is, the key and the keyway are provided on the shoulder structure, thereby realizing the purpose of the seed suction roller 2 and the rotating shaft 1 rotating together.

[0046] In a possible embodiment, as Figure 2 shown, the seed suction holes 201 are in the shape of a cone with a smaller outer diameter and a larger inner diameter, so as to enhance the adsorption ability of the seed suction holes 201 to the pepper seeds.

Claims

1. A roller seed metering device, characterized in that: include: A rotating shaft (1); A seed suction roller (2) is mounted on the rotating shaft (1) and is provided with a negative pressure chamber (200) therein, and a seed suction hole (201) is provided on the outer peripheral surface of the seed suction roller (2); A seeding mechanism (3) comprises a mounting frame (301) rotatably mounted on the rotating shaft (1) and a partition plate (302) mounted on the bottom of the mounting frame (301), wherein the bottom end surface of the partition plate (302) contacts the inner wall of the seed suction roller (2) and is used to separate part of the seed suction hole (201) from the negative pressure chamber (200) to generate a normal pressure zone (4) to complete seeding.

2. The roller seed metering device according to claim 1, characterized in that: A hollow ventilation channel (101) is provided inside the rotating shaft (1), and a ventilation branch (102) is provided on the rotating shaft (1) and located in the negative pressure chamber (200).

3. The roller seed metering device according to claim 1 or 2, characterized in that: The mounting frame (301) is rotatably mounted on the rotating shaft (1) via a bearing assembly.

4. The roller seed metering device according to claim 3, characterized in that: The mounting frame (301) comprises a mounting block (303), a bearing (304) and a connecting rod (305); The mounting block (303) is provided with an assembly opening, the bearing (304) is installed in the assembly opening, the top end of the connecting rod (305) is installed to the bottom end of the mounting block (303), and the bottom end of the connecting rod (305) is installed to the partition plate (302).

5. The roller seed metering device according to claim 4, characterized in that: The number of the mounting frames (301) is at least two.

6. The roller seed metering device according to claim 1, characterized in that: One end of the seed suction roller (2) is mounted on the rotating shaft (1) via a key connection.

7. The roller seed metering device according to claim 6, characterized in that: The seed suction roller (2) comprises an end cover (5), a cylinder (6) and an end cover (7), wherein the end cover (5) is mounted on one end of the cylinder (6), and the end cover (7) is mounted on the other end of the cylinder (6).

8. The roller seed metering device according to claim 3, characterized in that: The number of the seed suction holes (201) is a plurality, and the plurality of seed suction holes (201) are arranged on the seed suction roller (2) in an array.

9. The roller seed metering device according to claim 2, characterized in that: The number of the ventilation branches (102) is multiple, and the multiple ventilation branches (102) are arranged on the rotating shaft (1) in an array.

10. The roller seed metering device according to claim 8, characterized in that: The seed suction hole (201) is in a cone shape that is small on the outside and large on the inside.

Images