Traditional Chinese medicine seed sowing and seedling raising device

Abstract

The traditional Chinese medicine seed sowing and seedling raising device comprises a machine frame and a seed suction roller, the machine frame comprises roller supports and a conveying belt support, the two ends of the seed suction roller are close to the two sides of the roller supports on the two sides and are rotationally connected with the roller supports, and a power mechanism is arranged at the top of the seed suction roller. A seed storage box is arranged below the seed suction roller; the conveying belt support is arranged at the bottom of the rack, an unpowered conveying belt is arranged on the conveying belt support, and seedling raising plates are placed on the unpowered conveying belt; a plurality of annular limiting grooves are formed in the seed suction roller, a plurality of seed suction holes are formed in the bottoms of the limiting grooves, traditional Chinese medicine seeds are sucked through the seed suction holes evenly distributed in the outer surface of the seed suction roller, the number of the sucked seeds is limited through the limiting grooves, accurate and precise sowing on the seedling raising plate is achieved, the seeds are not damaged, the structure is simple, the operation difficulty is low, and the practicability is high. The device is convenient to use and has wide popularization and application value in the technical field of Chinese herbal medicine seedling raising equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of Chinese herbal medicine seedling raising equipment, in particular to a Chinese herbal medicine seed sowing device. Background Art

[0002] Plug tray seedling cultivation is a modern seedling cultivation technology that uses plug trays as seedling containers, one seed per hole, one plant per room, and one-time seedling cultivation. Because it is easy to control the seedling cultivation environment, the seedling quality is high, the seedling transplanting is simple and convenient, the root system is not damaged, the survival rate of planting is high, and the seedling acclimatization period is short.

[0003] Most hole tray sowing methods integrate assembly line operations such as substrate tray filling, hole pressing, soil covering, and watering. They are expensive and suitable for large-scale factory production. However, Chinese medicinal material seeds generally have the characteristics of small particles, light weight, and irregular shape. For example, the weight of 1,000 grains of Saposhnikovia divaricata seeds is about 4 grams, and the weight of 1,000 grains of Bupleurum seeds is about 1.4 grams. When using traditional hole tray seeders to sow small-grained Chinese medicinal material seeds, there are multiple types of seeds in one hole, which causes the roots of Chinese medicinal materials used as medicine to squeeze each other, affecting the growth and development of the roots. The price of Chinese medicinal material seeds is relatively high, which not only affects the quality of seedlings, but also increases the cost of Chinese medicinal material seeds. Chinese medicinal material seeds are small in size, light in weight, and irregular in shape, and are not suitable for pelleting. At the same time, my country's Chinese medicinal material industry has the characteristics of "low, small, scattered, and weak", resulting in the current use of manual spot sowing for seedlings of small-grained Chinese medicinal materials, which is inefficient and difficult to control the sowing depth, resulting in a low germination rate.

[0004] Chinese Patent No.: ZL201921754318.3 discloses a small seed plug tray seeding and sowing device, including a sowing frame, a seed storage tank with an outer end inclined downward is provided in the middle of both sides of the sowing frame, a seed storage plate is horizontally arranged in the middle of the sowing frame and is detachably connected thereto, the upper surface of the seed storage plate is flush with the lowermost end of the seed storage tank slot, a plurality of seed storage holes are evenly arranged on the seed storage plate, a sowing plate is horizontally arranged below the seed storage plate and cooperates with the sowing frame sliding guide, a plurality of sowing holes are evenly arranged on the sowing plate, and the number of sowing holes is equal to the number of seed storage holes. When the sowing plate is moved, The sowing holes and the seed storage holes correspond to each other, and the operation is simple. The sowing amount can be controlled more accurately, which is beneficial to improving the efficiency of seed tray seedling cultivation of crops such as vegetables. However, the seed tray seedling sowing device needs to shake the entire sowing frame for a long time when in use. Only after seeds fall into all the seed storage holes can the discharge handle be pulled to allow the seeds in the seed storage holes to fall onto the hole tray through the sowing holes. Otherwise, the problem of missed sowing will occur, and the use is more time-consuming and labor-intensive. Secondly, when sowing irregularly shaped long strips or linear Chinese medicinal seeds, there is a situation where multiple varieties are found in one hole, which is not conducive to the development of seedlings and is more wasteful of seeds. Summary of the Invention

[0005] The technical problem to be solved by the utility model is how to improve the quality and efficiency of hole tray sowing. The purpose of the utility model is to provide a Chinese medicine seed sowing and seedling raising device which sows seeds evenly and accurately, can sow one small Chinese medicine seed in one hole, is easy to operate, saves time and effort.

[0006] The technical solution adopted by the utility model is: a Chinese medicine seed sowing and seedling raising device, comprising a frame and a seed suction drum, the frame comprising a drum bracket and a conveyor belt bracket, the seed suction drum is cylindrical, both ends of the seed suction drum are rotatably mounted on the drum bracket, a power mechanism is provided on the top of the seed suction drum, and a seed storage box is provided below the seed suction drum; the conveyor belt bracket is arranged at the bottom of the frame, the conveyor belt bracket is provided with a non-powered conveyor belt, and a seedling raising tray is placed on the non-powered conveyor belt; the seed suction drum is provided with a plurality of annular limiting grooves equidistantly arranged along the axial direction of the seed suction drum, and a plurality of seed suction holes are provided at the bottom of the plurality of limiting grooves, and the seed suction holes are evenly distributed on the circumferential surface of the seed suction drum and evenly distributed along the axial direction of the seed suction drum.

[0007] The following beneficial effects can be achieved by using the Chinese medicinal seed sowing and seedling raising device provided by the utility model:

[0008] (1) The Chinese medicinal seeds are attracted by the seed suction holes evenly distributed on the outer surface of the seed suction drum, so that the Chinese medicinal seeds adhere to the outer surface of the seed suction drum under the action of negative pressure and are arranged at equal intervals along the equally distributed seed suction holes. The number of Chinese medicinal seeds attracted can be accurately controlled, so that the Chinese medicinal seeds can accurately fall into each hole on the seedling tray, with the effect of accurate sowing amount, and at the same time, the seeds are not damaged.

[0009] (2) The number of seeds attracted is limited by the limiting groove. Under the limiting effect of the limiting groove, multiple Chinese medicinal seeds cannot fit tightly with the seed suction hole, so that the excess Chinese medicinal seeds fall automatically, further improving the accuracy of the sowing amount; by changing the width of the limiting groove, the limiting groove outside the seed suction hole can accommodate two or more Chinese medicinal seeds at the same time, so that two or more seeds can be sown in one hole, further improving the success rate of Chinese medicinal seed seedling cultivation, and later by thinning out the seedlings to restore one plant in one room, promoting the development of the rhizome of the Chinese medicinal plant.

[0010] (3) The structure is simplified by combining the seed suction roller with the non-powered conveyor belt. When not in use, the seeds lose suction and automatically fall into the seed storage box. When in use, it only relies on a set of power mechanisms to provide power. It has a simple structure, small size, low operation difficulty, and is easy to use.

[0011] Preferably, a dual-pressure air pipe is fixedly connected to the middle part of the drum bracket, and the virtual axis of the dual-pressure air pipe coincides with the virtual axis of the seed suction drum; air pipe joints are provided at both ends of the dual-pressure air pipe, and the middle part of the dual-pressure air pipe is separated by a longitudinal partition plate, and an air suction port is provided on the dual-pressure air pipe on one side of the partition plate, and an air jet is provided on the dual-pressure air pipe on the other side of the partition plate, and a barrier plate is provided on the upper and lower sides of the air jet, one end of the barrier plate is fixedly connected to the dual-pressure air pipe, and the other end is close to the inner surface of the seed suction drum.

[0012] The double-pressure air pipe provides negative pressure for attracting Chinese medicinal seeds and positive pressure for sowing Chinese medicinal seeds. After the vacuum pump and the air pump are respectively connected through the air pipe joint, positive pressure and negative pressure are respectively formed on both sides of the partition plate in the double-pressure air pipe. The air suction port forms negative pressure in the space between the double-pressure air pipe and the seed suction drum, which facilitates attracting the seeds through the seed suction port; the air jet port forms positive pressure in the space connected to the two barrier plates. When the axially arranged attracted seeds on the seed suction drum rotate to between the two barrier plates, the negative pressure attraction disappears and is replaced by positive pressure blowing force, so that multiple Chinese medicinal seeds are sprayed out at the same time, realizing precise sowing.

[0013] Preferably, a mounting ring is provided on the drum bracket, the outer diameter of the mounting ring is adapted to the inner diameter of the seed suction drum, and the seed suction drum is rotatably connected to the drum bracket via the mounting ring.

[0014] The seed suction drum is fixed by the mounting ring so that it can rotate freely around the mounting ring, while preventing the seed suction drum from tilting or shifting, ensuring the positive and negative pressure fluctuations in the seed suction drum are stable, and the sowing positions are arranged neatly to ensure accuracy during sowing.

[0015] Preferably, the outer surface of the roller bracket near the two end edges is fixedly connected with a transmission gear; the power mechanism includes a driving gear and a motor, the motor is fixedly connected to the frame, the power output shaft of the motor is connected to the driving gear shaft, and the driving gear and the transmission gear are engaged with each other.

[0016] The motor provides power, the motor drives the active gear to rotate, the active gear drives the transmission gear to rotate, thereby driving the seed suction drum to rotate. The rotating seed suction drum first attracts the Chinese medicine seeds at a uniform speed, and then discharges the seeds evenly, sowing evenly, with a fast sowing speed, stable operation, and strong continuous sowing ability.

[0017] Preferably, transmission racks are provided on both sides of the seedling tray, the two transmission racks have the same structure, and the two transmission racks are adapted to the transmission gears on both sides of the seed suction drum.

[0018] By arranging transmission racks on both sides of the seedling tray, when the seed suction drum rotates, the transmission gear on the seed suction drum drives the transmission rack below to move, which can drive the seedling tray to move forward automatically during sowing, and realize accurate sowing row by row on the seedling tray, so that the seedling tray and the seed suction drum can move synchronously, without the need to push the seedling tray by hand or use another power mechanism to drive the seedling tray to move. The faster the seed suction drum rotates, the faster the seed tray moves, which prevents Chinese medicine seeds from falling outside the seedling tray and ensures accurate sowing position.

[0019] Preferably, the seed storage box includes a seed adding port, an inclined bottom plate and an arc-shaped bottom plate, the inclined bottom plate is arranged at the bottom of the seed adding port, and one end of the inclined bottom plate is tilted downward and fixedly connected to one end of the arc-shaped bottom plate.

[0020] Chinese medicinal seeds are added through the seed adding port, and the added seeds automatically slide onto the arc-shaped bottom plate under the action of the inclined plate, which is convenient for seed storage. At the same time, the seeds are brought close to the seed suction drum, which makes it easier for the seed suction drum to firmly attract the Chinese medicinal seeds at the seed suction port.

[0021] Preferably, the virtual axis of the arc bottom plate coincides with the virtual axis of the seed suction drum, and the curvature radius of the arc bottom plate is greater than the radius of the seed suction drum; side panels are provided on both sides of the seed adding port, the inclined bottom plate and the arc bottom plate.

[0022] The space between the arc-shaped bottom plate and the seed-absorbing drum is used as a storage space for Chinese medicinal seeds, and the side plates prevent the Chinese medicinal seeds from being scattered from the gaps.

[0023] Preferably, the top of the end of the arc-shaped bottom plate away from the inclined bottom plate is fixedly connected to a seeding groove, and the bottom of the seeding groove close to the end of the arc-shaped bottom plate is provided with a scraper plate, the end of the scraper plate is close to the outer surface of the seed suction roller, and a cleaning plate is fixedly installed above the scraper plate. The cleaning plate is provided with a plurality of protrusions extending to the bottom of the limiting groove, and the shape of the protrusions is adapted to the shape of the cross-section of the limiting groove.

[0024] The excess seeds are scraped off by the scraping plate at the bottom of the seed dispensing trough, and the excess seeds fall downward along the limiting groove and the arc-shaped bottom plate, and finally fall on the upper surface of the arc-shaped bottom plate to wait for the next time to be sucked up, ensuring that only one seed is attracted at a time; the sucked-up seeds continue to move upward with the seed suction roller, and when they move to the outside between the two baffle plates, since the space between the two baffle plates is under positive pressure, the row of seed suction holes that attract the Chinese medicine seeds is connected at this time, and the seeds are driven by the airflow ejected from the seed suction holes under the action of positive pressure to be ejected for seeding. The cleaning plate on the top of the seed dispensing trough can always clean the limiting groove by scraping, avoiding the problem that some seeds that are too small are stuck in the seed suction port and cannot be ejected in time, resulting in missed sowing.

[0025] Preferably, the seeding trough is tilted downward at one end away from the arc bottom plate, and a plurality of equally spaced limit plates are provided on the seeding trough, and the bottom of the cleaning plate is fixedly connected to the top of the limit plate.

[0026] The inclined seed dispensing trough facilitates the automatic falling of the sprayed seeds along the seed dispensing trough, and the limit plate limits the position where the seeds roll, ensuring that when the seeds fall into the holes, one seed is placed in each hole, and after the seeds germinate, one plant is planted in each room.

[0027] Preferably, the unpowered conveyor belt is provided with a plurality of rollers of the same size and equidistantly placed side by side, and both ends of the rollers are rotatably connected to the conveyor belt bracket.

[0028] The friction at the bottom of the seedling tray is reduced by the unpowered conveyor belt when it moves, so that the movement of the seedling tray is only affected by the transmission gear. There is no need to actively operate the conveyor belt to drive the seedling tray to move, ensuring that the seedling tray maintains a rigid transmission with the transmission gear, avoiding delays or hysteresis that affect the accuracy of sowing. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 ;

[0031] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 ;

[0032] Figure 3 This is the main view of the utility model after the seedling tray is taken out;

[0033] Figure 4 It is a schematic diagram of the three-dimensional structure of the utility model in a cross-sectional state from a main perspective after the seedling tray is taken out;

[0034] Figure 5 This utility model Figure 3 Cross-sectional view at AA in the middle;

[0035] Figure 6 This is a schematic diagram of the three-dimensional structure of the utility model when taking out the seedling tray from a top view;

[0036] Figure 7 It is a structural diagram of the seedling tray in the utility model;

[0037] Figure 8 This is a structural diagram of the seed storage box in the utility model;

[0038] Figure 9 It is a top view of the seed storage box in the utility model;

[0039] Figure 10 This utility model Figure 9 Cross-sectional view at the middle BB.

[0040] Figure markings: 1-frame, 11-drum bracket, 111-mounting ring, 12-conveyor belt bracket, 13-double-pressure air pipe, 131-partition plate, 132-air suction port, 133-air jet port, 134-blocking plate, 135-trachea joint, 2-seed suction drum, 21-seed suction hole, 22-limiting groove, 23-transmission gear, 3-power mechanism, 31-driving gear, 32-motor, 4-seed storage box, 41-seed adding port, 42-inclined bottom plate, 43-arc bottom plate, 44-side plate, 45-seed row groove, 451-cleaning plate, 452-scraping plate, 5-seedling tray, 51-transmission rack, 6-unpowered conveyor belt, 61-roller. DETAILED DESCRIPTION

[0041] The following will be combined with the Figure 1-10 The technical solution of the present invention is described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0042] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0043] Example 1

[0044] The following is further described in conjunction with specific embodiments. Figure 1-10As shown, this embodiment is a Chinese medicine seed sowing and seedling raising device, including a frame 1 and a seed suction drum 2, the frame 1 includes a drum bracket 11 and a conveyor belt bracket 12, the seed suction drum 2 is cylindrical, and the two ends of the seed suction drum 2 are rotatably mounted on the drum bracket 11, the top of the seed suction drum 2 is provided with a power mechanism 3, and the bottom of the seed suction drum 2 is provided with a seed storage box 4; the conveyor belt bracket 12 is arranged at the bottom of the frame 1, and a non-powered conveyor belt 6 is provided on the conveyor belt bracket 12, and a seedling tray 5 is placed on the non-powered conveyor belt 6; the seed suction drum 2 is provided with a plurality of equidistantly arranged along the axial direction of the seed suction drum 2 The annular limiting groove 22 is provided with multiple seed suction holes 21 at the bottom of the multiple limiting grooves 22. The seed suction holes 21 are evenly distributed on the circumferential surface of the seed suction drum 2 and evenly distributed along the axial direction of the seed suction drum 2. The Chinese medicine seeds are attracted by the seed suction holes 21 evenly distributed on the outer surface of the seed suction drum 2. The number of attracted seeds is limited by the action of the limiting groove 22, which can accurately control the number of attracted Chinese medicine seeds and enable the Chinese medicine seeds to accurately fall into each hole on the seedling tray 5. The sowing amount is accurate, the seeds are not damaged, the structure is simple, the volume is small, the operation difficulty is low, and it is easy to use.

[0045] Reference Figure 5 As shown, in this embodiment, the middle part of the drum bracket 11 is fixedly connected with a dual-pressure air pipe 13, and the virtual axis of the dual-pressure air pipe 13 coincides with the virtual axis of the seed suction drum 2; both ends of the dual-pressure air pipe 13 are provided with an air pipe joint 135, and the middle part of the dual-pressure air pipe 13 is separated by a longitudinal partition plate 131, and the dual-pressure air pipe 13 on one side of the partition plate 131 is provided with an air suction port 132, and the dual-pressure air pipe 13 on the other side of the partition plate 131 is provided with an air jet 133, and the upper and lower sides of the air jet 133 are provided with a baffle plate 134, one end of the baffle plate 134 is fixedly connected to the dual-pressure air pipe 13, and the other end is close to the inner surface of the seed suction drum 2, through the dual-pressure air pipe 13. The tube 13 provides negative pressure for attracting Chinese medicinal seeds and positive pressure for sowing Chinese medicinal seeds. After the vacuum pump and the air pump are respectively connected through the air pipe joint 135, positive pressure and negative pressure are respectively formed on both sides of the partition plate 131 of the dual-pressure air pipe 13. The air suction port 132 forms a negative pressure in the space between the dual-pressure air pipe 13 and the seed suction drum 2, which facilitates the attraction of the seeds through the seed suction port; the air jet port 133 forms a positive pressure in the space connected to the two baffle plates 134. When the axially arranged attracted seeds on the seed suction drum 2 rotate to between the two baffle plates 134, the negative pressure attraction disappears and is replaced by a positive pressure blowing force, spraying out multiple Chinese medicinal seeds at the same time to achieve precise sowing.

[0046] Reference Figure 6As shown, in this embodiment, a mounting ring 111 is provided on the roller bracket 11, and the outer diameter of the mounting ring 111 is adapted to the inner diameter of the seed suction drum 2. The seed suction drum 2 is rotatably connected to the roller bracket 11 through the mounting ring 111, and the seed suction drum 2 is fixed by the mounting ring 111, so that the seed suction drum 2 can rotate freely around the mounting ring 111, while preventing the seed suction drum 2 from tilting or offset, ensuring that the positive and negative pressure fluctuations in the seed suction drum 2 are stable, and at the same time, the sowing positions are arranged neatly to ensure accuracy during sowing.

[0047] Reference Figure 1-4 As shown, in this embodiment, the outer surface of the roller bracket 11 near the two end edges is fixedly connected with a transmission gear 23; the power mechanism 3 includes a driving gear 31 and a motor 32, the motor 32 is fixedly connected to the frame 1, and the power output shaft of the motor 32 is connected to the driving gear 31 axis, the driving gear 31 and the transmission gear 23 are engaged with each other, and the motor 32 provides power. The motor 32 drives the driving gear 31 to rotate, and the driving gear 31 drives the transmission gear 23 to rotate, thereby driving the seed suction drum 2 to rotate. The rotating seed suction drum 2 first attracts the Chinese medicine seeds at a uniform speed, and then discharges the seeds evenly, sowing evenly, with a fast sowing speed, stable operation, and strong continuous sowing ability.

[0048] Reference Figure 2 and Figure 7 As shown, in this embodiment, transmission racks 51 are provided on both sides of the seedling tray 5, and the two transmission racks 51 have the same structure, and the two transmission racks 51 are adapted to the transmission gears 23 on both sides of the seed suction drum 2. By arranging transmission racks 51 on both sides of the seedling tray 5, when the seed suction drum 2 rotates, the transmission gear 23 on the seed suction drum 2 drives the transmission rack 51 below to move, which can drive the seedling tray 5 to move forward automatically during sowing, and realize accurate sowing row by row on the seedling tray 5, so that the seedling tray 5 and the seed suction drum 2 can move synchronously, without manual pushing or driving the seedling tray 5 to move by another power mechanism 3. The faster the seed suction drum 2 rotates, the seedling tray 5 also moves faster, preventing Chinese medicine seeds from falling outside the seedling tray 5, and the sowing position is accurate.

[0049] Reference Figure 8-10 As shown, in this embodiment, the seed storage box 4 includes a seed adding port 41, an inclined bottom plate 42 and an arc-shaped bottom plate 43. The inclined bottom plate 42 is arranged at the bottom of the seed adding port 41, and one end of the inclined bottom plate 42 is tilted downward and fixedly connected to one end of the arc-shaped bottom plate 43. Chinese medicinal seeds are added through the seed adding port 41, and the added seeds automatically slide onto the arc-shaped bottom plate 43 under the action of the inclined plate, which is convenient for storing seeds and at the same time makes the seeds close to the seed suction drum 2, so that the seed suction drum 2 can firmly attract the Chinese medicinal seeds at the seed suction port.

[0050] Reference Figure 4As shown, in this embodiment, the virtual axis of the arc-shaped bottom plate 43 coincides with the virtual axis of the seed suction drum 2, and the curvature radius of the arc-shaped bottom plate 43 is greater than the radius of the seed suction drum 2; side panels 44 are provided on both sides of the seed adding port 41, the inclined bottom plate 42 and the arc-shaped bottom plate 43, and the space between the arc-shaped bottom plate 43 and the seed suction drum 2 is used as a storage space for Chinese medicinal seeds, and the side panels 44 prevent the Chinese medicinal seeds from being scattered from the gaps.

[0051] Reference Figure 10 As shown, in this embodiment, the top of the arc-shaped bottom plate 43 away from the inclined bottom plate 42 is fixedly connected to a seed discharging groove 45, and the bottom of the seed discharging groove 45 close to the end of the arc-shaped bottom plate 43 is provided with a scraping plate 452, and the end of the scraping plate 452 is close to the outer surface of the seed suction drum 2, and a cleaning plate 451 is fixedly installed on the top of the scraping plate 452. The cleaning plate 451 is provided with a plurality of protrusions extending to the bottom of the limiting groove 22. The shape of the protrusion is adapted to the shape of the cross-section of the limiting groove 22. The excess seeds are scraped off by the scraping plate 452 at the bottom of the seed discharging groove 45, and the excess seeds fall downward along the limiting groove 22 and the arc-shaped bottom plate 43, and Finally, it falls on the upper surface of the arc-shaped bottom plate 43 and waits to be sucked up next time, ensuring that only one seed is attracted at a time; the sucked seeds continue to move upward with the seed suction roller 2, and when they move to the outside between the two baffles 134, since the space between the two baffles 134 is at positive pressure, the row of seed suction holes 21 that attract the Chinese medicine seeds is connected at this time, and the seeds are driven by the airflow ejected from the seed suction holes 21 under the action of positive pressure to be ejected for seeding. The cleaning plate 451 on the top of the seed discharging groove 45 can always clean the limit groove 22 by scraping, avoiding the problem that some seeds with too small a volume are stuck in the seed suction port and cannot be ejected in time, resulting in missed sowing.

[0052] Reference Figure 8 or Figure 9 As shown, in this embodiment, the seeding trough 45 is tilted downward at one end away from the arc-shaped bottom plate 43, and a plurality of equally spaced limit plates are provided on the seeding trough 45. The bottom of the cleaning plate 451 is fixedly connected to the top of the limit plate. The tilted seeding trough 45 facilitates the automatic falling of the sprayed seeds along the seeding trough 45, and the position where the seeds roll is limited by the limit plate, ensuring that when the seeds fall into the holes, one seed is placed in each hole, and after the seeds germinate, one plant is placed in each room.

[0053] Reference Figure 4 or Figure 6As shown, in this embodiment, the unpowered conveyor belt 6 is provided with a plurality of rollers 61 of the same size and equidistantly placed side by side, and both ends of the rollers 61 are rotatably connected to the conveyor belt bracket 12. The unpowered conveyor belt 6 is used to reduce the friction at the bottom of the seedling tray 5 when it moves, so that the movement of the seedling tray 5 is only affected by the transmission gear 23, and there is no need to actively operate the conveyor belt to drive the seedling tray 5 to move, ensuring that the seedling tray 5 maintains a rigid transmission with the transmission gear 23, avoiding delays or hysteresis affecting the accuracy of sowing.

[0054] Example 2

[0055] When using the utility model, first, a layer of loose, breathable, and water-retaining soil is laid in each hole on the sterilized seedling tray 5, and the soil is placed on the unpowered conveyor belt 6, so that the racks on both sides of the seedling tray 5 are close to the transmission gear 23 on the transmission seed suction drum 2, and then the new Chinese medicinal seeds of the year that have been cleaned, disinfected and activated are put into the seed storage box 4 from the seed adding port 41. Under the action of gravity, the Chinese medicinal seeds roll along the inclined bottom plate 42 to the curved bottom plate 43 and close to the seed suction drum 2, and then start the motor 32, the motor 32 drives the active gear 31 to rotate, and the active gear 31 drives the transmission gear 23 to rotate, so that the seed suction drum 2 rotates together with the transmission gear 23, and at the same time, the transmission gear 23 drives the rack to move, so that the seedling tray 5 fixedly connected to the rack starts to move;

[0056] The two ends of the double-pressure air pipe 13 are respectively connected to the vacuum pump and the air pump, specifically, the air intake port 132 is connected to the vacuum pump, and the air jet port 133 is connected to the air pump. After the air intake port 132 is connected to the vacuum pump, the vacuum pump draws away the air between the end of the double-pressure air pipe 13 provided with the air intake port 132 and the air between the air intake port 132 and the seed suction drum 2, so that a negative pressure is formed in the area where the seed suction drum 2 is connected to the air intake port 132. Under the action of the negative pressure, the Chinese medicinal seeds outside the seed suction drum 2 are attracted to the seed suction holes 21 on the seed suction drum 2 along with the air. As the seed suction drum rotates, the circumference of the seed suction drum 2 is adsorbed with Chinese medicinal seeds row by row. At the same time, as the seed suction drum 2 rotates, the first row of Chinese medicinal seeds attracted rotates to the outside of the area between the two baffles 134. Since an air jet 133 is provided between the two baffles 134, and the air jet 133 is connected to the air pump, the seeds lose the attraction of the vacuum pump when they rotate to the area between the two baffles 134, and immediately receive the blowing force of the air pump, blowing out the Chinese medicinal seeds originally attracted outside the seed suction holes 21 arranged in a straight line. The blown-out seeds fall on the seed discharging groove 45 under the action of gravity, and fall into the holes in the movable seedling tray 5 along the inclined seed discharging groove 45;

[0057] Since the seed suction holes 21 are evenly distributed on the circumferential surface of the seed suction drum 2 and evenly distributed along the axial direction of the seed suction drum 2, the seeds attracted at the same height can also be ejected at the same time and eventually fall into the same row of holes on the seedling tray 5. As the seed suction drum 2 rotates, the seedling tray 5 is also driven to move synchronously, and eventually each row of holes on the seedling tray 5 can fall into Chinese medicinal seeds.

[0058] Secondly, the seed suction hole 21 is set at the bottom of the limiting groove 22. The width and depth of the limiting groove 22 can limit the number of Chinese medicinal seeds attracted by the seed suction hole 21 each time. When two Chinese medicinal seeds are attracted at the same time, they cannot be close to the bottom of the limiting groove 22 at the same time, so that the excess seeds automatically fall off during the rotation process or when they rotate to the scraper plate 452, ensuring that one seed suction hole 21 can only attract one Chinese medicinal seed. Chinese medicinal seeds of different volumes require the use of a seed suction roller 2 with limiting grooves 22 of different widths and cross-sectional shapes; by changing the width of the limiting groove 22, the limiting groove 22 outside the seed suction hole 21 can accommodate two or more Chinese medicinal seeds at the same time, realizing the sowing of two or more seeds in one hole, further improving the success rate of Chinese medicinal seed seedling cultivation, and restoring one plant in one room through thinning in the later stage, promoting the normal development of the rhizomes of Chinese medicinal plants.

[0059] In order to prevent partially developed seeds of smaller size or seeds from getting stuck in the seed suction hole 21 due to their shape, a cleaning plate 451 fixedly connected to the limiting plate is provided above the scraping plate 452. The cleaning plate 451 has multiple protrusions extending to the bottom of the limiting groove 22. When the seed suction drum 2 rotates, the protrusions are always in the limiting groove 22 and move relative to the rotating seed suction drum 2. The limiting groove 22 is cleaned by the protrusions on the cleaning plate 451, which serves as the last cleaning component to prevent part of the seeds from getting stuck in the seed suction hole 21.

[0060] The seedling tray 5 is pushed forward by the rigid transmission action of the transmission gear 23 under the action of the transmission gear 23. Since the seedling tray 5 is placed on the unpowered conveyor belt 6, the unpowered conveyor belt 6 will not apply excess force to the seedling tray 5. It will only rotate with the bottom of the seedling tray 5 when the seedling tray 5 moves, maintaining the same linear speed, ensuring that the seedling tray 5 moves smoothly from one side to the other.

[0061] When one seedling tray 5 is about to move out of the bottom of the seed suction drum 2, another prepared new seedling tray 5 can be quickly placed close to the previous seedling tray 5 on the unpowered conveyor belt 6, so that the newly placed seedling tray 5 can continue to move and sow the Chinese medicine seeds under the force of the rigid transmission of the transmission gear 23; if there is no need to continue sowing, the vacuum pump and the air pump are immediately turned off after sowing in the seedling tray 5, and the air is stopped from being pumped from the air intake 132 and ejected from the air outlet 133. When the Chinese medicine seeds lose suction, they will automatically fall back into the seed storage box 4 along the limit groove 22 and wait for continued use when sowing next time. The vacuum pump and the air pump can also be automatically started and stopped by installing a photoelectric sensor at a suitable position on the conveyor belt bracket 12 to automatically detect the position of the front end and the rear end of the seedling tray 5, thereby further improving the degree of automation.

[0062] Directional terms used in this disclosure, such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," to indicate positions or locations, are based on the positions or locations shown in the accompanying drawings and are intended solely to facilitate and simplify the description of this disclosure. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and are therefore not to be construed as limitations on this disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

[0063] The standard parts used in this application document can all be purchased from the market, and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field, which is common knowledge in this field. In addition, this application is mainly used to protect mechanical devices, so this application no longer explains the control method and circuit connection in detail.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A Chinese medicinal seed sowing and seedling raising device, comprising a frame (1) and a seed suction drum (2), characterized in that: The frame (1) includes a roller bracket (11) and a conveyor belt bracket (12); the seed suction roller (2) is cylindrical; both ends of the seed suction roller (2) are rotatably mounted on the roller bracket (11); a power mechanism (3) is provided on the top of the seed suction roller (2); and a seed storage box (4) is provided below the seed suction roller (2); the conveyor belt bracket (12) is arranged at the bottom of the frame (1); a non-powered conveyor belt (6) is provided on the conveyor belt bracket (12); and a seedling tray (5) is placed on the non-powered conveyor belt (6); the seed suction roller (2) is provided with a plurality of annular limiting grooves (22) equidistantly arranged along the axial direction of the seed suction roller (2); the bottoms of the plurality of limiting grooves (22) are each provided with a plurality of seed suction holes (21); the seed suction holes (21) are evenly distributed on the circumferential surface of the seed suction roller (2) and evenly distributed along the axial direction of the seed suction roller (2).

2. The Chinese medicinal seed sowing and seedling raising device according to claim 1, characterized in that: A dual-pressure air pipe (13) is fixedly connected to the middle of the drum bracket (11), and the virtual axis of the dual-pressure air pipe (13) coincides with the virtual axis of the seed suction drum (2); both ends of the dual-pressure air pipe (13) are provided with air pipe joints (135), and the middle of the dual-pressure air pipe (13) is separated by a longitudinal partition plate (131), and an air suction port (132) is provided on the dual-pressure air pipe (13) on one side of the partition plate (131), and an air jet (133) is provided on the dual-pressure air pipe (13) on the other side of the partition plate (131), and a baffle plate (134) is provided on the upper and lower sides of the air jet (133), one end of the baffle plate (134) is fixedly connected to the dual-pressure air pipe (13), and the other end is close to the inner surface of the seed suction drum (2).

3. The Chinese medicinal seed sowing and seedling raising device according to claim 1, characterized in that: The roller bracket (11) is provided with a mounting ring (111), the outer diameter of the mounting ring (111) is adapted to the inner diameter of the seed suction roller (2), and the seed suction roller (2) is rotatably connected to the roller bracket (11) via the mounting ring (111).

4. The Chinese medicinal seed sowing and seedling raising device according to claim 1, characterized in that: The outer surface of the roller bracket (11) near both end edges is fixedly connected to a transmission gear (23); the power mechanism (3) comprises a driving gear (31) and a motor (32); the motor (32) is fixedly connected to the frame (1); the power output shaft of the motor (32) is connected to the shaft of the driving gear (31); and the driving gear (31) and the transmission gear (23) are meshed with each other.

5. The Chinese medicinal seed sowing and seedling raising device according to claim 4, characterized in that: Transmission racks (51) are provided on both sides of the seedling tray (5), the two transmission racks (51) have the same structure, and the two transmission racks (51) are adapted to the transmission gears (23) on both sides of the seed suction drum (2).

6. The Chinese medicinal seed sowing and seedling raising device according to claim 1, characterized in that: The seed storage box (4) comprises a seed adding port (41), an inclined bottom plate (42) and an arc-shaped bottom plate (43), wherein the inclined bottom plate (42) is arranged at the bottom of the seed adding port (41), and one end of the inclined bottom plate (42) is tilted downward and fixedly connected to one end of the arc-shaped bottom plate (43).

7. The Chinese medicinal seed sowing and seedling raising device according to claim 6, characterized in that: The virtual axis of the arc-shaped bottom plate (43) coincides with the virtual axis of the seed suction drum (2), and the radius of curvature of the arc-shaped bottom plate (43) is greater than the radius of the seed suction drum (2); and side plates (44) are provided on both sides of the seed feeding port (41), the inclined bottom plate (42), and the arc-shaped bottom plate (43).

8. The Chinese medicinal seed sowing and seedling raising device according to claim 7, characterized in that: A seed discharging groove (45) is fixedly connected to the top of one end of the arc bottom plate (43) away from the inclined bottom plate (42), and a seed scraping plate (452) is provided at the bottom of one end of the seed discharging groove (45) close to the arc bottom plate (43). The end of the seed scraping plate (452) is close to the outer surface of the seed suction roller (2), and a cleaning plate (451) is fixedly installed above the seed scraping plate (452). The cleaning plate (451) is provided with a plurality of protrusions extending to the bottom of the limiting groove (22), and the shape of the protrusions is adapted to the shape of the cross section of the limiting groove (22).

9. The Chinese medicinal seed sowing and seedling raising device according to claim 8, characterized in that: The seeding trough (45) is tilted downward at one end away from the arc bottom plate (43), and a plurality of equally spaced limiting plates are provided on the seeding trough (45). The bottom of the cleaning plate (451) is fixedly connected to the top of the limiting plate.

10. The Chinese medicinal seed sowing and seedling raising device according to claim 1, characterized in that: The unpowered conveyor belt (6) is provided with a plurality of rollers (61) of the same size and equidistantly arranged side by side, and both ends of the rollers (61) are rotatably connected to the conveyor belt bracket (12).

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