A small seeding device for alfalfa pot experiments

Abstract

The present invention relates to the field of alfalfa cultivation science and discloses a small seeding device for alfalfa pot experiments, which includes a seed storage box. The bottom end of the seed storage box is fixedly connected with a seeding ring. A metering cavity is opened at the top end of the seeding ring. A telescopic rod is movably sleeved in the inner cavity of the seeding ring. The bottom end of the telescopic rod is fixedly connected with a soil breaker. A seed dropping pipe communicating with the soil breaker is opened inside the telescopic rod. A positioning ring is fixedly connected in the middle of the telescopic rod. A sealing block is fixedly connected to the telescopic rod above the positioning ring. A seed dropping port is formed in the gap around the telescopic rod between the positioning ring and the sealing block. By means of a pressing device in the present invention, the telescopic rod moves upward relative to the seeding rod, and under the action of a threaded groove, the telescopic rod drives the soil breaker to rotate, so as to easily break the soil at the seeding place. The sealing ring is opened at an appropriate depth, and alfalfa seeds are put into the broken soil, so as to realize rapid seeding while effectively controlling the seeding depth.

Description

Technical Field

[0001] The present invention relates to the field of alfalfa cultivation, and particularly to a small seeding device for alfalfa pot experiments. Background Technique

[0002] Alfalfa has a high forage yield, strong renewable ability, good palatability, and extremely high feeding value. It is mainly used for making hay, silage feed or as forage grass. All kinds of livestock and poultry like to eat it. It is currently recognized as high-quality excellent forage grass, and it is also the most widely planted forage grass variety in the country and even the world. It is known as the "king of forage grass" and has practical research significance.

[0003] Due to the small size of alfalfa seeds and the weak ability of the buds to break through the soil, the cultivation of alfalfa has relatively high requirements for the planting depth. It is required that the planting should not be too deep, about one to two centimeters. However, there is no professional seeding device in the existing laboratories, resulting in low efficiency of manual seeding. Moreover, manual seeding cannot well control the seeding depth. Especially when the soil conditions in different pots are different, it is impossible to effectively distinguish soils in different states and make corresponding changes in the seeding depth. Due to the small size of alfalfa seeds, conventional planting devices cannot adapt to alfalfa seeds, and it is difficult to control the amount of seeds sown during planting. There are phenomena such as excessive single-seed sowing or seed jamming resulting in empty sowing, and it cannot well adapt to the characteristics of alfalfa seeds to achieve efficient planting. Summary of the Invention

[0004] In view of the deficiencies existing in the use of the existing alfalfa pot seeding device in the background technique, the present invention provides a small seeding device for alfalfa pot experiments, which has the advantages of being light and portable, freely controlling the planting depth, and automatically covering the soil to facilitate moisture conservation, and solves the technical problems such as difficult control of the planting depth, cumbersome planting steps, and low efficiency proposed in the above background technique.

[0005] The present invention provides the following technical solutions:

[0006] A small seeding device for alfalfa pot experiments, including a seed storage box, the bottom end of the seed storage box is fixedly connected with a seeding ring, and it is characterized in that: a metering cavity is opened inside the top end of the seeding ring, a telescopic rod is movably sleeved in the inner cavity of the seeding ring, and a soil breaker is fixedly connected to the bottom end of the telescopic rod; a seed dropping pipe communicating with the soil breaker is opened inside the telescopic rod; a positioning ring is fixedly connected to the telescopic rod, and a closing block is fixedly connected to the telescopic rod above the positioning ring. A seed dropping port is formed in the gap around the telescopic rod between the positioning ring and the closing block; the top end of the closing block is movably connected with a return spring, and a limiting structure is arranged at the top of the return spring; a thread groove is arranged on the inner wall of the seeding ring, and a corresponding thread is arranged on the outer side of the telescopic rod; when the telescopic rod moves to the highest position, the bottom surface of the closing block is higher than the bottom surface of the seed storage box, and the height difference is greater than the diameter of alfalfa seeds.

[0007] Further, the soil breaker is composed of several soil-breaking bars, and the whole is in a rhombic cage shape.

[0008] Further, the diameter of the seed dropping tube is larger than the diameter of alfalfa seeds.

[0009] Further, the diameter of the positioning ring is equal to the diameter of the closing block, and both are consistent with the inner diameter of the metering cavity.

[0010] Further, the bottom surface of the seed dropping port is an inclined surface that slopes towards the center of the seed dropping tube.

[0011] As a preferred solution, the limiting structure is a support frame. The support frame is fixedly installed at the top of the return spring, and the lower end of the support frame is fixedly connected to the bottom surface of the seed storage box.

[0012] Further, the peripheral surface of the support frame is a hollow structure, so that when the telescopic rod moves to the highest position, the seed storage box can communicate with the seed dropping port.

[0013] Further, a bearing disc is movably installed at the top end of the closing block.

[0014] As a preferred solution, a lever shaft is fixedly connected to the top end of the telescopic rod, and stirring levers are fixedly installed on the outer side of the lever shaft.

[0015] Further, the return spring is sleeved on the telescopic rod between the lever shaft and the closing block.

[0016] The present invention has the following beneficial effects:

[0017] 1. In the present invention, through the pressing device, the telescopic rod moves upward relative to the sowing rod, and under the action of the thread groove, the telescopic rod drives the soil breaker to rotate, so as to easily break the soil at the sowing place, and open the closing block at an appropriate depth, and put the alfalfa seeds into the broken soil, so as to realize rapid sowing while effectively controlling the sowing depth.

[0018] 2. In the present invention, when the telescopic rod moves downward and upward, it drives the soil breaker to rotate, so that while efficiently breaking the soil downward, it realizes covering the soil back upward, which is beneficial to moisture conservation. At the same time, the telescopic rod drives the stirring levers to rotate, and during the sowing process, the alfalfa seeds in the seed storage box are mixed and stirred, so that they effectively flow and slide, thereby avoiding the phenomenon of seeds getting stuck and blocked during sowing, and seeds not falling and causing empty sowing.

[0019] 3. In the present invention, the return spring is used to adjust the digging depth of the telescopic rod. On soft soil, the spring presses the telescopic rod to dig deeper, and on dry and hard soil, the spring presses the telescopic rod to dig shallower, so as to ensure that the alfalfa seeds can effectively break through the soil and germinate after sowing. Description of the Drawings

[0020] Figure 1 This is a schematic cross-sectional view of the overall structure of the present invention;

[0021] Figure 2 This is a schematic view of the seed dropping state of the present invention;

[0022] Figure 3 This is the present invention Figure 1 A partial enlarged schematic view of the structure at A in the present invention.

[0023] In the figure: 1, seed storage box; 2, sowing rod; 3, metering cavity; 4, telescopic rod; 5, soil breaker; 6, seed dropping pipe; 61, seed dropping port; 7, positioning ring; 8, closing block; 9, return spring; 10, support frame; 11, thread groove; 12, bearing plate; 13, lever shaft; 14, stirring lever. 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 of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figure 1, A small seeding device for alfalfa pot experiments, including a seed storage box 1. A seeding ring 2 is fixedly connected to the bottom end of the seed storage box 1. The seeding ring 2 is communicated with the bottom of the seed storage box 1. A metering cavity 3 is opened inside the top end of the seeding ring 2. The alfalfa seeds in the seed storage box 1 enter the metering cavity 3 through the communication part. A telescopic rod 4 is movably sleeved in the inner cavity of the seeding ring 2. A soil-breaking device 5 is fixedly connected to the bottom end of the telescopic rod 4. The soil-breaking device 5 is in a rhombic cage shape, which can make the alfalfa seeds fall from any direction. A seed-falling pipe 6 communicated with the soil-breaking device 5 is opened inside the telescopic rod 4. The diameter of the seed-falling pipe 6 is larger than the diameter of the alfalfa seeds. The seeds at the metering cavity 3 fall to the soil-breaking device 5 through the seed-falling pipe 6 and enter the soil. A positioning ring 7 is fixedly connected in the middle of the telescopic rod 4. The diameter of the positioning ring 7 is the same as the inner diameter of the metering cavity 3, so that the positioning ring 7 moves up and down in the metering cavity 3 following the telescopic rod 4, preventing the seeds from falling into dead corners during the up and down movement of the telescopic rod 4. A closing block 8 is fixedly connected to the telescopic rod 4 above the positioning ring 7. The diameter of the closing block 8 is the same as the inner diameter of the metering cavity 3. When the telescopic rod 4 moves to the highest position, the bottom surface of the closing block 8 is higher than the bottom surface of the seed storage box 1, and the height difference is greater than the diameter of the alfalfa seeds. A seed-falling port 61 is formed by the gap around the telescopic rod 4 between the positioning ring 7 and the closing block 8. The bottom surface of the seed-falling port 61 is an inclined surface inclined towards the seed-falling pipe 6, which is convenient for the seeds falling into the metering cavity 3 to enter the seed-falling pipe 6. The top end of the closing block 8 is movably connected with a return spring 9. A limiting structure is fixedly installed at the top end of the return spring 9. In the embodiment, it is a support frame 10. The peripheral surface of the support frame 10 is a hollow structure, so that when the telescopic rod 4 moves to the highest position, the seed storage box 1 can be communicated with the seed-falling port 61. The support frame 10 is fixedly connected to the bottom surface of the seed storage box 1. By pressing down this seeding device, after the soil-breaking device 5 touches the ground, it extends downward into the ground. As the insertion depth increases, the resistance received by the soil-breaking device 5 increases, so as to automatically reach an appropriate planting depth and prepare for seeding. Continuing to press down this device makes the closing block 8 press the return spring 9 to contract upward until the telescopic rod 4 rises to the highest position. At this time, the bottom surface of the closing block 8 is higher than the bottom surface of the seed storage box 1. The alfalfa seeds slide into the metering cavity 3 through the gap and enter the seed-falling pipe 6 through the seed-falling port 61 and fall. After a fixed time, lift this device upward. The return spring 9 pushes the closing block 8 to move downward and reset, and the communication port is closed. The seeds in the seed storage box 1 stop falling into the metering cavity 3. At this time, the seeds in the metering cavity 3 and the seed-falling pipe 6 can still continue to fall into the soil at a fixed depth. Continuing to lift the device, pull out the telescopic rod 4 and the soil-breaking device 5 inside the soil, and then repeat this operation to other planting points.

[0026] Please refer to Figure 2, the inner wall of the sowing ring 2 is provided with a thread groove 11, and the outer side of the telescopic rod 4 is provided with corresponding threads, and the two are threadedly connected, so that during the up and down movement of the telescopic rod 4 relative to the sowing ring 2, it can rotate in the corresponding direction along with the thread groove 11. The top end of the closing block 8 is movably installed with a bearing plate 12, which ensures that the elastic force of the return spring 9 is not affected during the rotation of the telescopic rod 4. The top end of the telescopic rod 4 is fixedly connected with a lever shaft 13, and a stirring lever 14 is fixedly installed on the outer side of the lever shaft 13. The stirring lever 14 moves and rotates correspondingly with the up and down movement and rotation of the telescopic rod 4, so as to stir the alfalfa seeds in the seed storage box 1, so that they can smoothly fall into the metering cavity 3 without blockage. By rotating the telescopic rod 4, when the soil breaker 5 extends downward into the soil, it is easier to stir the soil for breaking the soil and planting. When pulling out upward, it rotates in the reverse direction to realize automatic soil covering, which is beneficial to soil seed moisture conservation.

[0027] Please refer to Figure 3 , the closing block 8 and the support frame 10 are connected by a return spring 9. When the soil density at the planting site is relatively large and the texture is relatively hard, press down the sowing device. When the resistance received by the soil breaker 5 at a relatively shallow sowing position is consistent with the elastic resistance of the return spring 9, the soil breaker 5 stops digging downward, and the telescopic rod 4 moves upward relative to the sowing ring 2 to open the sowing channel. When the soil density at the planting site is low and the texture is relatively soft, press down the sowing device. When the resistance received by the soil breaker 5 at a relatively deep sowing position is consistent with the elastic resistance of the return spring 9, the soil breaker 5 stops digging downward for sowing. Thus, the device can automatically adjust the sowing depth for different soil conditions, ensuring the effect of deep burial in soft soil and shallow burial in dry and hard soil, which is beneficial to the effective germination of alfalfa seeds.

[0028] The working principle of the usage method of the present invention is as follows:

[0029] During use, place the alfalfa seeds in the seed storage box 1, hold the sowing device by hand to the potted plant sowing site, press down the device, so that the telescopic rod 4 presses the soil to the sowing depth, and continue to press down, so that the telescopic rod 4 moves upward relative to the sowing ring 2. Under the action of the thread groove 11, the telescopic rod 4 rotates, driving the soil breaker 5 to rotate in the soil to generate a sowing pit until the closing block 8 on the telescopic rod 4 moves upward above the bottom surface of the seed storage box 1. The alfalfa seeds in the seed storage box 1 enter the metering cavity 3 through the gap between the closing block 8 and the seed storage box 1, and slide into the seed dropping pipe 6 through the seed dropping port 61, and fall into the sowing pit through the cage-shaped opening of the soil breaker 5. Then pull up the sowing device. During the upward movement of the telescopic rod 4 and the soil breaker 5, they rotate in the reverse direction through the thread groove 11, so as to cover the soil above the sowing site, which is beneficial to soil seed moisture conservation. Then continue to repeat this operation at other planting points in the potted plant, so as to achieve rapid and efficient sowing.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A small seeding device for alfalfa pot experiments, comprising a seed storage box (1), the bottom end of the seed storage box (1) is fixedly connected with a seeding ring (2), and it is characterized in that: An amount control cavity (3) is provided inside the top end of the seeding ring (2). A telescopic rod (4) is movably sleeved in the inner cavity of the seeding ring (2). A soil-breaking device (5) is fixedly connected to the bottom end of the telescopic rod (4). A seed dropping pipe (6) communicating with the soil-breaking device (5) is provided inside the telescopic rod (4). A positioning ring (7) is fixedly connected to the telescopic rod (4). A closing block (8) is fixedly connected to the telescopic rod (4) above the positioning ring (7). A seed dropping opening (61) is formed in the gap around the telescopic rod (4) between the positioning ring (7) and the closing block (8). A return spring (9) is movably connected to the top end of the closing block (8), and a limiting structure is provided at the top of the return spring (9). Thread grooves (11) are provided on the inner wall of the seeding ring (2), and corresponding threads are provided on the outer side of the telescopic rod (4). When the telescopic rod (4) moves to the highest position, the bottom surface of the closing block (8) is higher than the bottom surface of the seed storage box (1), and the height difference is greater than the diameter of alfalfa seeds. A bearing disc (12) is movably installed at the top end of the closing block (8). A lever shaft (13) is fixedly connected to the top end of the telescopic rod (4), and stirring levers (14) are fixedly installed on the outer side of the lever shaft (13). The return spring (9) is sleeved on the telescopic rod (4) between the lever shaft (13) and the closing block (8).

2. The small seeding device for alfalfa pot experiment according to claim 1, characterized in that: The soil-breaking device (5) is composed of a plurality of soil-breaking bars and is in an overall diamond-shaped cage shape.

3. A small seeding device for alfalfa pot experiments according to claim 1, characterized in that: The diameter of the seed dropping pipe (6) is greater than the diameter of alfalfa seeds.

4. A small seeding device for alfalfa pot experiments according to claim 1, characterized in that: The diameter of the positioning ring (7) is equal to the diameter of the closing block (8), and both are consistent with the inner diameter of the amount control cavity (3).

5. The small seeding device for alfalfa pot experiment according to claim 1, characterized in that: The bottom surface of the seed dropping opening (61) is an inclined surface inclined towards the center of the seed dropping pipe (6).

6. The small seeding device for alfalfa pot experiment according to claim 1, characterized in that: The limiting structure is a support frame (10). The support frame (10) is fixedly installed at the top end of the return spring (9), and the lower end of the support frame (10) is fixedly connected to the bottom surface of the seed storage box (1).

7. A small seeding device for alfalfa pot experiment according to claim 6, characterized in that: The peripheral surface of the support frame (10) is a hollow structure, so that when the telescopic rod (4) moves to the highest position, the seed storage box (1) can communicate with the seed dropping opening (61).

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