A seeding device for planting centipeda minima

Abstract

The application belongs to the technical field of hundred-ribs grass planting equipment, and discloses a seeding device for hundred-ribs grass planting, which comprises a storage box, the bottom surface of the storage box is fixedly connected with a fixed box, the inside of the fixed box is provided with an air pump, and the side surface of the storage box is fixedly connected with a fixed curved pipe. The application changes the gas inlet direction by operating the adjusting mechanism, so that the inlet gas pushes the rotating plate to rotate, the rotation of the seeding cylinder is adjusted, the position of the seeding pipe on the seeding cylinder is changed, the No.1 pipe and the No.2 pipe, which are respectively connected to the two ends of the seeding bin, are movably connected with the seeding cylinder, the torsional spring is additionally arranged on the outer surface of the No.1 pipe and the No.2 pipe, the outside seeding pipe is pushed to rotate to the lower position by the gas, and reaches the limit position, so that the position switching of different seeding pipes is quickly and conveniently realized, the seeding pipes with different intervals are replaced, different seeding requirements are adapted, different row spacing seeding is realized, the application range is wide, the adjustment is convenient, and the use effect is good.

Description

Technical Field

[0001] This invention belongs to the technical field of centella asiatica planting equipment, specifically a sowing device for centella asiatica planting. Background Technology

[0002] Centella asiatica is a plant belonging to the Santalaceae family and the Centella genus. For the cultivation of Centella asiatica, it is usually selected in high and dry, well-drained land, and base fertilizer should be applied before land preparation. It is propagated by seeds, either by direct sowing or transplanting seedlings. Since the capsules of Centella asiatica split open when mature, the seeds are easily scattered on the ground. Therefore, the seeds should be harvested when the fruits are mature in July or August. In actual sowing, a seeder is used.

[0003] Existing seeding devices for centella asiatica cultivation typically involve feeding seeds into a seeding chamber and using a seeding tube fixed to the outside of the chamber. The seeding tube is then moved to loosen the soil and scatter the seeds. However, in practice, the row spacing for centella asiatica varies depending on the soil conditions. It is usually necessary to replace the seeding chamber with one equipped with a seeding tube, using different spacing between the tubes to achieve the desired row spacing. However, dismantling and replacing these chambers is cumbersome, requires stockpiling seeding chambers of different sizes, and involves transporting and carrying them before operation. This inconvenience affects seeding efficiency and results in poor performance.

[0004] Furthermore, existing seeding devices for centella asiatica cultivation work by feeding seeds into a seeding tube, which then moves with the tube to achieve sowing. Typically, the sowing density needs to be adjusted to meet different planting requirements. Currently, the sowing density is adjusted by manually rotating the feed inlet of the seeding tube to control the actual sowing density. However, this requires stopping the machine for adjustment, and the adjustment effect cannot be quickly verified afterward. Repeated starting and stopping are necessary for adjustment and verification, making the operation cumbersome. Summary of the Invention

[0005] The purpose of this invention is to provide a sowing device for planting centella asiatica, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a sowing device for planting *Gnaphalium affine*, comprising a storage box, a fixed box fixedly connected to the bottom surface of the storage box, an air pump installed inside the fixed box, a fixed curved pipe fixedly connected to the side of the storage box, a sleeve pipe fixedly sleeved on the outer surface of the fixed curved pipe, a sowing cylinder provided below the storage box, a sowing chamber movably sleeved on the inner surface of the sowing cylinder, a first pipe and a second pipe fixedly connected to both ends of the sowing chamber, a fixed pipe fixedly connected to the upper ends of both the first pipe and the second pipe, the inner surface of the fixed pipe movably sleeved on the outer side of the sleeve pipe, and a sealing sleeve fixedly sleeved on the outer surface of the first pipe. The left end of the seeding cylinder is fixedly connected to a sleeve, and a push plate is fixedly connected to the outer surface of the sleeve. Both the sleeve and the push plate are inside the sealing sleeve. The inner surface of the sleeve is movably sleeved with the first tube. The top surface of the sealing sleeve is fixedly connected to a connecting pipe. There are two connecting pipes. An adjustment mechanism is fixedly connected between the two connecting pipes. The adjustment mechanism is fixedly connected to the air pump via a third tube. The outer surface of the first tube is provided with a torsion spring located inside the seeding cylinder. The inner surface of the seeding cylinder is provided with an internal groove. The bottom surface of the seeding chamber is provided with a bottom groove. The seeding cylinder includes a cylinder body, a first seeding tube, a second seeding tube, a third seeding tube, a side groove, and an annular groove.

[0007] First embodiment: as follows Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, when it is necessary to change the sowing row spacing, the air pump is started, allowing air to be introduced into the adjusting mechanism through pipe No. 3. By rotating the adjusting rod, one end of the curved hole on the adjusting rod is connected to hole No. 1, and the other end of the curved hole is connected to pipe No. 3, allowing air to enter the connecting pipe on one side and then into the sealing sleeve. As air is supplied vertically downward, the air pushes the push plate on one side in the sealing sleeve, which in turn causes the push plate driven by the air to rotate the sleeve, thereby causing the sleeve to rotate the sowing cylinder. As the torsion spring rotates to its limit position, the No. 1 sowing tube at the bottom of the sowing cylinder... Rotate upwards, while simultaneously rotating downwards the second seeding tube located outside the first seeding tube, completing the switching of seeding tubes with different row spacings. Seeds enter the seeding chamber through the fixed curved tube via the first and second tubes, and fall down along the bottom groove at the bottom of the seeding chamber into the bottom seeding tube. They can then be moved and sown. When it is necessary to replace the third set of seeding tubes, the adjusting rod in the adjusting mechanism is flipped to connect one end of the curved hole with the connecting tube on the other side. This allows the gas entering the sealing sleeve to push another set of push plates to rotate from the other side, thereby causing the seeding cylinder to reverse and achieving the switching of another set of seeding tubes.

[0008] First, by attaching the seeding cylinder to the outside of the seeding chamber and installing seeding tubes with different spacings on the outer surface of the seeding cylinder, pneumatic power is provided by an air pump, allowing gas to be introduced into the adjustment mechanism. By operating the adjustment mechanism to change the direction of gas introduction, the introduced gas pushes the push plate to rotate, thereby achieving the rotation adjustment of the seeding cylinder and changing the position of the seeding tubes on the seeding cylinder. The No. 1 and No. 2 pipes, which are respectively connected to the two ends of the seeding chamber, are movably connected to the seeding cylinder. Torsion springs are added to the outer surface of the No. 1 and No. 2 pipes, so that when the outer seeding tubes are rotated to the lower limit position under the push of the gas, they reach the limit position. This allows for quick and convenient switching of the positions of different seeding tubes, thereby replacing seeding tubes with different spacings to adapt to different sowing requirements and achieve sowing with different row spacings. It has a wide range of applications, is easy to adjust, and has good performance.

[0009] Preferably, the internal spacing of the first seeding tube, the second seeding tube, and the third seeding tube are all different. The sides of the first seeding tube, the second seeding tube, and the third seeding tube are all provided with side grooves. By switching the seeding tubes with different spacings and rotating them downwards, the planting of different row spacings can be adjusted.

[0010] Preferably, the inner surface of the annular groove is movably fitted with the sealing sleeve, and the outer surface of the cylinder is provided with a discharge hole. The discharge hole is connected to the internal groove, and the outer end of the discharge hole is fixedly connected to the first seeding tube, the second seeding tube, and the third seeding tube. There are three sets of internal grooves to ensure that the seeding cylinder can only discharge when it moves to the accurate position. This allows the seeds to fall into the internal groove through the bottom groove and then be discharged through the discharge hole. The rotation of the seeding cylinder is controlled by controlling the ventilation pressure. When the seeding cylinder has not rotated to the correct position, the internal groove and the bottom groove are misaligned, which can achieve sealing and prevent material from being discharged, resulting in good control.

[0011] Preferably, the adjustment mechanism includes an adjustment seat, a first hole, a second hole, a magnetic plate, an adjustment rod, a curved hole, a retaining ring, and a limiting groove. The two ends of the first hole are respectively connected to two connecting pipes. The magnetic plate is fixedly sleeved inside the second hole. The adjustment rod is movably sleeved inside the second hole. The curved hole is opened on the outer surface of the adjustment rod. The cross-section of the curved hole is "L". Utilizing the magnetism of the magnetic plate, after rotating the adjustment rod, the magnetic attraction ensures that the adjustment rod has stable placement conditions after operation. The surface can rotate freely and maintain a stable state after adjustment. When the "L"-shaped curved hole is rotated for adjustment, the gas inlet direction can be adjusted by changing the end face connection position of the curved hole, and it can also achieve sealing and gas blocking.

[0012] Preferably, the retaining ring is fixedly sleeved on the outer surface of the adjusting rod, and the limiting groove is formed in the inner surface of the second hole. The outer surface of the retaining ring is movably sleeved with the limiting groove. By utilizing the movable sleeve of the retaining ring and the limiting groove, the adjusting rod has a stable rotation condition, avoiding up and down movement.

[0013] Preferably, the seeding chamber has two slots inside, which are symmetrically distributed on both sides of the bottom groove. Electromagnets and sealing blocks are fixedly installed on the inner surfaces of the two slots, respectively. A moving mechanism is movably connected between the two slots. There are multiple electromagnets. By continuously increasing the number of starting electromagnets, the discharge force is increased, and the moving distance of the moving mechanism is further controlled.

[0014] Preferably, the moving mechanism includes a moving plate, a notch, a mounting groove, and a magnetic strip. The notch is formed on the front side of the moving plate, the mounting groove is formed on the end face of the moving plate, and the magnetic strip is fixedly sleeved inside the mounting groove.

[0015] Second embodiment: as follows Figure 1 , Figure 2 , Figure 5 , Figure 8 , Figure 9 and Figure 10 As shown, when the sowing density needs to be adjusted during sowing, the electromagnet is activated, making it magnetic after being energized. The magnetism of the energized electromagnet is opposite to that of the magnetic strip. As the electromagnet becomes magnetically opposite, the repulsive force pushes the magnetic strip on the moving mechanism to move, causing the moving mechanism to slide between the two sets of slots. During the movement, the notch of the moving plate moves along the sealing block, gradually reducing the flow cross-section of the notch and decreasing the amount of seeds falling. Under stable movement of the seeder, the amount of seeds sown per unit area decreases, thus completing the control of reducing the sowing density. When further reduction is needed, other electromagnets are gradually activated, increasing the repulsive force and increasing the displacement of the moving mechanism, further reducing the flow cross-section of the notch.

[0016] First, slots are created inside the seeding chamber, with two sets of slots symmetrically distributed on both sides of the bottom slot. Electromagnets and sealing blocks are added to each set of slots, and a movable mechanism is connected between the two sets of slots. This movable mechanism is located inside the bottom slot. The seeding density is adjusted by controlling the flow cross-section of the missing slot within the movable mechanism. Activating the electromagnets utilizes their opposite magnetic properties to the magnetic strip, creating a repulsive force that drives the movable mechanism. This causes the movable plate to gradually move and engage the sealing block, changing the flow cross-section of the missing slot. The size of the missing slot is controlled by controlling the number of activated electromagnets, thus controlling the magnitude of the repulsive force. Continuous adjustment is possible during the seeding process, effectively regulating the planting density and avoiding repeated manual adjustments. The adjustment effect can be judged by observing the actual material output, resulting in good performance.

[0017] Preferably, a lifting mechanism is fixedly connected to the side of one of the fixed tubes, an installation plate is fixedly sleeved on the outer surface of one of the sleeve tubes, an air pipe is fixedly connected to the lower end of the lifting mechanism, a side tube is fixedly connected to the side of the third tube, and a conversion mechanism is fixedly connected between the side tube and the air pipe.

[0018] Preferably, the lifting mechanism includes a fixed plate, an inner cavity, a spring, and a fixed rod. The inner cavity is formed on the top of the fixed plate, the spring is fixedly installed inside the inner cavity, the top end of the spring is fixedly connected to the fixed rod, and the upper end of the fixed rod is fixedly connected to the mounting plate.

[0019] Preferably, the conversion mechanism includes a fixed base, a No. 3 hole, a No. 4 hole, and a sealing rod. The No. 3 hole and the No. 4 hole are both opened on the outer side of the fixed base. The outer end of the No. 3 hole is fixedly connected to the air pipe, and the inner surface of the No. 4 hole is threadedly sleeved with the sealing rod.

[0020] Third embodiment: as follows Figure 1 , Figure 2 , Figure 3 , Figure 11 , Figure 12 and Figure 13 As shown, when the sowing depth needs to be adjusted, rotate the adjusting rod in the adjusting mechanism so that the curved hole on the adjusting rod is not connected to the No. 3 pipe, and rotate the sealing rod outward so that the No. 3 hole is connected to the side pipe. Start the air pump, and as the gas enters the side pipe through the No. 3 pipe and then enters the air pipe through the No. 3 hole, the gas in the air pipe enters the inner cavity of the lifting mechanism. As the gas enters the inner cavity, the internal air pressure increases and pushes the fixing plate downward along the fixing rod, thereby causing the fixing pipes on both sides to move downward along the sleeve pipe. At the same time, the sowing cylinder moves downward and the sowing tube penetrates deeper into the soil layer. Rotate and seal the sealing rod.

[0021] First, by fixing a connecting side pipe to the side of pipe No. 3 and fixing a connecting switching mechanism to the end face of the side pipe, gas from an air pump is introduced into the interior of the lifting mechanism. By continuously ventilating, the internal air pressure in the inner cavity of the lifting mechanism is increased. With the fixed rod sealing the upper part of the inner cavity, the increased air pressure pushes the fixed plate downward from the inside. This downward movement of the fixed pipe drives the entire seeding cylinder downward, thereby changing the depth of the seeding tube inserted into the soil. After adjustment, the sealing rod is rotated to achieve sealing and pressure maintenance. Under the sealed condition, the switching of the seeding tube can continue to be realized by controlling the adjustment mechanism. The actual adjustment is simple and convenient to use.

[0022] The beneficial effects of this invention are as follows:

[0023] 1. This invention involves attaching a seeding cylinder to the outside of the seeding chamber and installing seeding tubes with different spacings on the outer surface of the seeding cylinder. An air pump provides pneumatic power, allowing gas to flow into an adjustment mechanism. By operating the adjustment mechanism to change the direction of gas flow, the incoming gas pushes a push plate to rotate, simultaneously adjusting the rotation of the seeding cylinder and thus changing the position of the seeding tubes. Furthermore, the first and second pipes, connected to both ends of the seeding chamber, are movably connected to the seeding cylinder. Torsion springs are added to the outer surfaces of the first and second pipes, ensuring that the outer seeding tubes reach their limit position when rotated downwards under the gas push. This allows for quick and convenient switching between different seeding tube positions, enabling the replacement of seeding tubes with different spacings to adapt to different sowing requirements and achieve different row spacings. It has a wide range of applications, is easy to adjust, and provides excellent results.

[0024] 2. This invention features slots inside the seeding chamber, with two sets of slots symmetrically distributed on both sides of the bottom slot. Electromagnets and sealing blocks are added to each set of slots, and a movable mechanism is movably connected between the two sets of slots. This movable mechanism is located inside the bottom slot. The seeding density is adjusted by controlling the flow cross-section of the missing slot within the movable mechanism. Activating the electromagnets utilizes their opposite magnetic properties to the magnetic strip, thus using repulsive force to move the movable mechanism. This causes the movable plate to gradually move and engage the sealing block, changing the flow cross-section of the missing slot. The size of the missing slot is controlled by controlling the number of activated electromagnets, allowing for continuous adjustment during the seeding process. This effectively regulates the planting density, avoiding repeated manual adjustments. The adjustment effect can be judged by observing the actual material output during the adjustment process, resulting in good performance.

[0025] 3. This invention fixes a connecting side pipe to the side of the No. 3 pipe and fixes a connecting switching mechanism to the end face of the side pipe. By introducing gas from an air pump into the interior of the lifting mechanism, the internal air pressure in the inner cavity of the lifting mechanism is increased by continuously ventilating. With the fixed rod sealing the upper part of the inner cavity, the increased air pressure pushes the fixed plate downward from the inside, thereby using the downward movement of the fixed pipe to drive the entire seeding cylinder downward, thus changing the depth of the seeding tube inserted into the soil layer. After adjustment, the sealing rod is rotated to achieve sealing and pressure maintenance. Under the sealed condition, the switching of the seeding tube can continue to be realized by controlling the adjustment mechanism. The actual adjustment is simple and convenient to use. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0028] Figure 3 This is a schematic diagram showing the installation between the seeding cylinder and the No. 1 pipe of the present invention;

[0029] Figure 4 This is a schematic diagram of the seeding cylinder of the present invention;

[0030] Figure 5 This is a schematic diagram of the explosion between the seeding cylinder and the No. 1 pipe of the present invention;

[0031] Figure 6 This is a cross-sectional view of the seeding cylinder of the present invention;

[0032] Figure 7 This is an exploded view of the adjusting mechanism of the present invention;

[0033] Figure 8 This is an exploded view of the relationship between the seeding bin and the moving mechanism of the present invention;

[0034] Figure 9 This is a cross-sectional schematic diagram of the seeding cylinder and seeding chamber of the present invention;

[0035] Figure 10 This is an exploded view of the moving mechanism of the present invention;

[0036] Figure 11 This is an exploded view of the lifting mechanism of the present invention;

[0037] Figure 12 This is an exploded view of the connection between the fixing tube and the sleeve tube of the present invention;

[0038] Figure 13 This is an exploded view of the conversion mechanism of the present invention.

[0039] In the diagram: 1. Storage box; 2. Fixed box; 3. Air pump; 4. Fixed curved pipe; 5. Sleeve pipe; 6. Seeding cylinder; 61. Cylinder body; 62. Seeding pipe No. 1; 63. Seeding pipe No. 2; 64. Seeding pipe No. 3; 65. Side groove; 66. Ring groove; 7. Seeding chamber; 8. Pipe No. 1; 9. Pipe No. 2; 10. Fixed pipe; 11. Sealing sleeve; 12. Sleeve; 13. Push plate; 14. Connecting pipe; 15. Adjusting mechanism; 151. Adjusting seat; 152. Hole No. 1; 153. Hole No. 2; 154. Magnetic plate; 155. Adjusting rod; 156. Curved hole; 157. Snap ring; 1 58. Limiting groove; 16. No. 3 tube; 17. Torsion spring; 18. Mounting plate; 19. Lifting mechanism; 191. Fixing plate; 192. Inner cavity; 193. Spring; 194. Fixing rod; 20. Side tube; 21. Conversion mechanism; 211. Fixing seat; 212. No. 3 hole; 213. No. 4 hole; 214. Sealing rod; 22. Air pipe; 23. Internal groove; 24. Discharge hole; 25. Bottom groove; 26. Slot; 27. Sealing block; 28. Moving mechanism; 281. Moving plate; 282. Notched groove; 283. Mounting groove; 284. Magnetic strip; 29. ​​Electromagnet. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] like Figures 1 to 13 As shown in the embodiment of the present invention, a sowing device for planting *Centella asiatica* includes a storage box 1, a fixed box 2 fixedly connected to the bottom surface of the storage box 1, an air pump 3 inside the fixed box 2, a fixed curved pipe 4 fixedly connected to the side of the storage box 1, a sleeve pipe 5 fixedly sleeved on the outer surface of the fixed curved pipe 4, a sowing cylinder 6 below the storage box 1, a sowing chamber 7 movably sleeved on the inner surface of the sowing cylinder 6, a first pipe 8 and a second pipe 9 fixedly connected to both ends of the sowing chamber 7 respectively, a fixed pipe 10 fixedly connected to the upper ends of both the first pipe 8 and the second pipe 9, the inner surface of the fixed pipe 10 movably sleeved on the outside of the sleeve pipe 5, a sealing sleeve 11 fixedly sleeved on the outer surface of the first pipe 8, and a sleeve 12 fixedly connected to the left end of the sowing cylinder 6. A push plate 13 is fixedly connected to the outer surface of the sleeve 12. Both the sleeve 12 and the push plate 13 are inside the sealing sleeve 11. The inner surface of the sleeve 12 is movably sleeved with the first tube 8. The top surface of the sealing sleeve 11 is fixedly connected to a connecting pipe 14. There are two connecting pipes 14. An adjusting mechanism 15 is fixedly connected between the two connecting pipes 14. A third tube 16 is fixedly connected between the adjusting mechanism 15 and the air pump 3. A torsion spring 17 located inside the seeding cylinder 6 is provided on the outer surface of the first tube 8. An internal groove 23 is opened on the inner surface of the seeding cylinder 6. A bottom groove 25 is opened on the bottom surface of the seeding chamber 7. The seeding cylinder 6 includes a cylinder body 61, a first seeding tube 62, a second seeding tube 63, a third seeding tube 64, a side groove 65, and an annular groove 66.

[0042] First embodiment: as follows Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, when it is necessary to change the sowing row spacing, the air pump 3 is started, so that the air pump 3 introduces gas into the interior of the adjusting mechanism 15 through the No. 3 pipe 16. By rotating the adjusting rod 155, one end of the curved hole 156 on the adjusting rod 155 is connected to the No. 1 hole 152, and the other end of the curved hole 156 is connected to the No. 3 pipe 16, so that the gas is introduced into the connecting pipe 14 on one side, and then into the sealing sleeve 11 through the connecting pipe 14. As the gas is introduced vertically downward, the gas pushes the push plate 13 on one side in the sealing sleeve 11, which in turn causes the push plate 13 driven by the gas to drive the sleeve 12 to rotate, thereby causing the sleeve 12 to drive the sowing cylinder 6 to rotate. As the torsion spring 17 rotates to the limit position, the bottom of the sowing cylinder 6... The first seeding tube 62 rotates upward, while the second seeding tube 63, located outside the first seeding tube 62, rotates downward, completing the switching of seeding tubes with different row spacings. Seeds enter the seeding chamber 7 through the fixed curved tube 4 via the first tube 8 and the second tube 9, and fall down along the bottom groove 25 at the bottom of the seeding chamber 7 into the bottom seeding tube. They can then be moved and sown. When it is necessary to replace the third set of seeding tubes, the adjusting rod 155 in the flipping adjustment mechanism 15 is used to connect one end of the curved hole 156 with the connecting pipe 14 on the other side. This allows the gas entering the sealing sleeve 11 to push the other set of push plates 13 to rotate from the other side, thereby causing the seeding cylinder 6 to reverse, thus realizing the switching of another set of seeding tubes.

[0043] First, by fitting the seeding cylinder 6 onto the outside of the seeding chamber 7, and installing seeding tubes with different spacings on the outer surface of the seeding cylinder, the air pump 3 provides pneumatic power, allowing gas to be introduced into the adjustment mechanism 15. By operating the adjustment mechanism 15 to change the direction of gas introduction, the introduced gas pushes the push plate 13 to rotate, thereby achieving the rotation adjustment of the seeding cylinder 6, thus changing the position of the seeding tubes on the seeding cylinder 6. The first pipe 8 and the second pipe 9, which are respectively connected to both ends of the seeding chamber 7, are movably fitted with the seeding cylinder 6. A torsion spring 17 is added to the outer surface of the first pipe 8 and the second pipe 9, so that when the outer seeding tube rotates to the lower limit position under the push of the gas, it reaches the limit position. This allows for quick and convenient switching of the positions of different seeding tubes, thereby replacing seeding tubes with different spacings to adapt to different sowing requirements and achieve sowing with different row spacings. It has a wide range of applications, is easy to adjust, and has good performance.

[0044] The internal spacing of the first seeding tube 62, the second seeding tube 63, and the third seeding tube 64 are all different. The sides of the first seeding tube 62, the second seeding tube 63, and the third seeding tube 64 are all provided with side grooves 65. By switching the seeding tubes with different spacings and rotating them downwards, the sowing of different row spacings can be adjusted.

[0045] The inner surface of the annular groove 66 is movably connected to the sealing sleeve 11. The outer surface of the cylinder 61 is provided with a discharge hole 24, which is connected to the inner groove 23. The outer end of the discharge hole 24 is fixedly connected to the first seeding tube 62, the second seeding tube 63, and the third seeding tube 64. The inner groove 23 consists of three sets to ensure that the seeding cylinder 6 can only discharge when it is moved to the accurate position. The seeds fall into the inner groove 23 through the bottom groove 25 and then discharge through the discharge hole 24. The rotation of the seeding cylinder 6 is controlled by controlling the ventilation pressure. When the seeding cylinder 6 has not rotated to the correct position, the inner groove 23 and the bottom groove 25 are misaligned, which can achieve sealing and prevent material discharge, resulting in good control.

[0046] The adjustment mechanism includes an adjustment seat 151, a first hole 152, a second hole 153, a magnetic plate 154, an adjustment rod 155, a curved hole 156, a retaining ring 157, and a limiting groove 158. The two ends of the first hole 152 are connected to two connecting pipes 14 respectively. The magnetic plate 154 is fixedly sleeved inside the second hole 153. The adjustment rod 155 is movably sleeved inside the second hole 153. The curved hole 156 is opened on the outer surface of the adjustment rod 155. The cross-section of the curved hole 156 is "L". Utilizing the magnetism of the magnetic plate 154, after rotating the adjustment rod 155, the magnetic attraction ensures that the adjustment rod 155 has a stable placement condition after operation. The surface can rotate freely and the state after adjustment is stable. When the "L"-shaped curved hole 156 is rotated for adjustment, the direction of gas introduction can be adjusted by changing the end face connection position of the curved hole 156, and it can also achieve sealing and gas blocking.

[0047] The retaining ring 157 is fixedly sleeved on the outer surface of the adjusting rod 155, and the limiting groove 158 is opened in the inner surface of the second hole 153. The outer surface of the retaining ring 157 is movably sleeved with the limiting groove 158. By utilizing the movable sleeve of the retaining ring 157 and the limiting groove 158, the adjusting rod 155 has a stable rotation condition, avoiding up and down movement.

[0048] The seeding chamber 7 has two slots 26 inside, which are symmetrically distributed on both sides of the bottom groove 25. Electromagnets 29 and sealing blocks 27 are fixedly installed on the inner surfaces of the two slots 26 respectively. A moving mechanism 28 is movably connected between the two slots 26. There are multiple electromagnets 29. By continuously increasing the number of starting electromagnets 29, the discharge force is increased, and the moving distance of the moving mechanism 28 is further controlled.

[0049] The moving mechanism 28 includes a moving plate 281, a notch 282, a mounting groove 283, and a magnetic strip 284. The notch 282 is formed on the front side of the moving plate 281, the mounting groove 283 is formed on the end face of the moving plate 281, and the magnetic strip 284 is fixedly sleeved inside the mounting groove 283.

[0050] Second embodiment: as follows Figure 1 , Figure 2 , Figure 5 , Figure 8 , Figure 9 and Figure 10 As shown, when the sowing density needs to be adjusted during sowing, electromagnet 29 is activated, making it magnetic after being energized. The magnetic properties of electromagnet 29 are opposite to those of magnetic strip 284. As electromagnet 29 becomes magnetically opposite, the repulsive force pushes the magnetic strip 284 on the moving mechanism 28 to move, thereby causing the moving mechanism 28 to slide between the two sets of slots 26. During the movement, the notch 282 of the moving plate 281 moves along the sealing block 27, gradually reducing the flow cross section of the notch 282, reducing the amount of seeds falling, and reducing the amount of seeds sown per unit area under stable movement of the seeder, thus completing the control of reducing the sowing density. When further reduction is needed, other electromagnets 29 are gradually activated, increasing the repulsive force and increasing the displacement of the moving mechanism 28, further reducing the flow cross section of the notch 282.

[0051] First, slots 26 are opened inside the seeding chamber 7, and two sets of slots 26 are symmetrically distributed on both sides of the bottom groove 25. Electromagnets 29 and sealing blocks 27 are added to the two sets of slots 26 respectively, and a moving mechanism 28 is movably connected between the two sets of slots 26. The moving mechanism 28 is located inside the bottom groove 25. The seeding density is adjusted by controlling the flow cross section of the notch 282 in the moving mechanism 28. By activating the electromagnets 29, the electromagnets 29, after being energized, have a magnetism opposite to that of the magnetic strip 284, and thus use the repulsive force to push the moving mechanism 28 to move. This causes the moving plate 281 to gradually move and engage the sealing block 27, thereby changing the flow cross section of the notch 282. The size of the notch 282 is controlled by controlling the number of electromagnets 29 activated. Continuous adjustment can be made during the seeding process to effectively adjust the planting density, avoiding repeated manual adjustments. The adjustment effect can be judged by observing the actual material output during the adjustment process, resulting in good performance.

[0052] Among them, a lifting mechanism 19 is fixedly connected to the side of a fixed pipe 10, an installation plate 18 is fixedly sleeved on the outer surface of a sleeve pipe 5, an air pipe 22 is fixedly connected to the lower end of the lifting mechanism 19, a side pipe 20 is fixedly connected to the side of the third pipe 16, and a conversion mechanism 21 is fixedly connected between the side pipe 20 and the air pipe 22.

[0053] The lifting mechanism 19 includes a fixed plate 191, an inner cavity 192, a spring 193, and a fixed rod 194. The inner cavity 192 is opened on the top of the fixed plate 191. The spring 193 is fixedly installed inside the inner cavity 192. The top end of the spring 193 is fixedly connected to the fixed rod 194. The upper end of the fixed rod 194 is fixedly connected to the mounting plate 18.

[0054] The conversion mechanism 21 includes a fixed base 211, a third hole 212, a fourth hole 213, and a sealing rod 214. The third hole 212 and the fourth hole 213 are both opened on the outer side of the fixed base 211. The outer end of the third hole 212 is fixedly connected to the air pipe 22, and the inner surface of the fourth hole 213 is threadedly connected to the sealing rod 214.

[0055] Third embodiment: as follows Figure 1 , Figure 2 , Figure 3 , Figure 11 , Figure 12 and Figure 13 As shown, when the sowing depth needs to be adjusted, rotate the adjusting rod 155 in the adjusting mechanism 15 so that the curved hole 156 on the adjusting rod 155 is not connected to the No. 3 pipe 16, and rotate the sealing rod 214 outward so that the No. 3 hole 212 is connected to the side pipe 20. Start the air pump 3. As the gas enters the side pipe 20 through the No. 3 pipe 16, it enters the air pipe 22 through the No. 3 hole 212, so that the gas in the air pipe 22 enters the inner cavity 192 of the lifting mechanism 19. As the gas enters the inner cavity 192, the internal air pressure increases and pushes the fixing plate 191 downward along the fixing rod 194, thereby causing the fixing pipes 10 on both sides to move downward along the sleeve pipe 5. At the same time, the sowing cylinder 6 moves downward and the sowing tube goes deeper into the soil. Rotate and seal the sealing rod 214.

[0056] First, by fixing the connecting side pipe 20 to the side of the third pipe 16 and fixing the end face of the side pipe 20 to the connecting conversion mechanism 21, the gas from the air pump 3 is introduced into the interior of the lifting mechanism 19. By continuously ventilating, the internal air pressure of the inner cavity 192 of the lifting mechanism 19 is increased. With the fixed rod 194 sealing the upper part of the inner cavity 192, the increased air pressure pushes the fixed plate 191 downward from the inside. This downward movement of the fixed pipe 10 drives the seeding cylinder 6 to move downward as a whole, thereby changing the depth of the seeding tube inserted into the soil. After adjustment, the sealing rod 214 is rotated to achieve sealing and pressure maintenance. Under the seal, the switching of the seeding tube can continue to be realized by controlling the adjustment mechanism 15. The actual adjustment is simple and convenient to use.

[0057] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Although embodiments of the invention have been shown and described, it will be understood by those skilled 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sowing device for planting Centella asiatica, comprising a storage box (1), characterized in that: A fixed box (2) is fixedly connected to the bottom surface of the storage box (1). An air pump (3) is installed inside the fixed box (2). A fixed curved pipe (4) is fixedly connected to the side of the storage box (1). A sleeve pipe (5) is fixedly sleeved on the outer surface of the fixed curved pipe (4). A seeding cylinder (6) is provided below the storage box (1). A seeding chamber (7) is movably sleeved on the inner surface of the seeding cylinder (6). A first pipe (8) and a second pipe (9) are fixedly connected to both ends of the seeding chamber (7). A fixed pipe (10) is fixedly connected to the upper end of both the first pipe (8) and the second pipe (9). The inner surface of the fixed pipe (10) is movably sleeved on the outside of the sleeve pipe (5). A sealing sleeve (11) is fixedly sleeved on the outer surface of the first pipe (8). A sleeve pipe (12) is fixedly connected to the left end of the seeding cylinder (6). A push plate is fixedly connected to the outer surface of the sleeve pipe (12). (13) The sleeve (12) and the push plate (13) are both located inside the sealing sleeve (11). The inner surface of the sleeve (12) is movably connected to the first pipe (8). The top surface of the sealing sleeve (11) is fixedly connected to the connecting pipe (14). There are two connecting pipes (14). An adjustment mechanism (15) is fixedly connected between the two connecting pipes (14). The adjustment mechanism (15) is fixedly connected to the air pump (3) via the third pipe (16). The outer surface of the first pipe (8) is provided with a torsion spring (17) located inside the seeding cylinder (6). The inner surface of the seeding cylinder (6) is provided with an internal groove (23). The bottom surface of the seeding chamber (7) is provided with a bottom groove (25). The seeding cylinder (6) includes a cylinder body (61), a first seeding pipe (62), a second seeding pipe (63), a third seeding pipe (64), a side groove (65), and an annular groove (66). The adjustment mechanism includes an adjustment seat (151), a first hole (152), a second hole (153), a magnetic plate (154), an adjustment rod (155), a curved hole (156), a retaining ring (157), and a limiting groove (158). The two ends of the first hole (152) are respectively connected to two connecting pipes (14). The magnetic plate (154) is fixedly sleeved inside the second hole (153). The adjustment rod (155) is movably sleeved inside the second hole (153). The curved hole (156) is opened on the outer surface of the adjustment rod (155). The cross-section of the curved hole (156) is "L".

2. The seeding device for planting Centella asiatica according to claim 1, characterized in that: The internal spacing of the first seeding tube (62), the second seeding tube (63), and the third seeding tube (64) are all different. The sides of the first seeding tube (62), the second seeding tube (63), and the third seeding tube (64) are all provided with side grooves (65).

3. The seeding device for planting Centella asiatica according to claim 1, characterized in that: The inner surface of the annular groove (66) is movably connected to the sealing sleeve (11). The outer surface of the cylinder (61) is provided with a discharge hole (24). The discharge hole (24) is connected to the inner groove (23). The outer end of the discharge hole (24) is fixedly connected to the first seeding pipe (62), the second seeding pipe (63), and the third seeding pipe (64).

4. The seeding device for planting Centella asiatica according to claim 1, characterized in that: The retaining ring (157) is fixedly sleeved on the outer surface of the adjusting rod (155), and the limiting groove (158) is opened in the inner surface of the second hole (153). The outer surface of the retaining ring (157) is movably sleeved with the limiting groove (158).

5. The seeding device for planting Centella asiatica according to claim 1, characterized in that: The seeding chamber (7) has two slots (26) inside. The two slots (26) are symmetrically distributed on both sides of the bottom groove (25). Electromagnets (29) and sealing blocks (27) are fixedly installed on the inner surfaces of the two slots (26). A moving mechanism (28) is movably connected between the two slots (26).

6. The seeding device for planting Centella asiatica according to claim 5, characterized in that: The moving mechanism (28) includes a moving plate (281), a notch (282), a mounting groove (283), and a magnetic strip (284). The notch (282) is formed on the front side of the moving plate (281), the mounting groove (283) is formed on the end face of the moving plate (281), and the magnetic strip (284) is fixedly sleeved inside the mounting groove (283).

7. The seeding device for planting Centella asiatica according to claim 1, characterized in that: A lifting mechanism (19) is fixedly connected to the side of one of the fixed tubes (10), an installation plate (18) is fixedly sleeved on the outer surface of one of the sleeve tubes (5), an air pipe (22) is fixedly connected to the lower end of the lifting mechanism (19), a side tube (20) is fixedly connected to the side of the third tube (16), and a conversion mechanism (21) is fixedly connected between the side tube (20) and the air pipe (22).

8. A seeding device for planting Centella asiatica according to claim 7, characterized in that: The lifting mechanism (19) includes a fixed plate (191), an inner cavity (192), a spring (193), and a fixed rod (194). The inner cavity (192) is opened on the top of the fixed plate (191). The spring (193) is fixedly installed inside the inner cavity (192). The top end of the spring (193) is fixedly connected to the fixed rod (194). The upper end of the fixed rod (194) is fixedly connected to the mounting plate (18).

9. A seeding device for planting Centella asiatica according to claim 7, characterized in that: The conversion mechanism (21) includes a fixed base (211), a third hole (212), a fourth hole (213), and a sealing rod (214). The third hole (212) and the fourth hole (213) are both opened on the outer side of the fixed base (211). The outer end of the third hole (212) is fixedly connected to the air pipe (22), and the inner surface of the fourth hole (213) is threadedly connected to the sealing rod (214).

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