A device for sowing seeds of beach vegetation

Abstract

The present application relates to the technical field of marine ecological protection and restoration, and discloses a beach vegetation grass seed sowing device, a sowing box is fixedly installed on the top inner side of the bottom plate through a connecting frame, a distribution box is integrally connected to the top of the sowing box, and a mixing and granulating cylinder is fixedly installed on the top of the distribution box in the horizontal direction, the present application realizes the side stirring and side atomization spraying of the nutrient solution by stably pumping the nutrient solution to the atomizing nozzles uniformly arranged along the axial direction, makes the nutrient solution uniformly penetrate into the grass seed pellets in the granulating process, significantly improves the germination potential and disease resistance of the pellets, can also form a moisture retention film on the surface of the pellets, avoids the adhesion and clumping of the pellets caused by the local accumulation of the nutrient solution, and significantly improves the weight and density of the grass seeds after the pelletization treatment, greatly reduces the influence of wind deflection when falling, makes it easier to fall into the soil matrix, realizes natural soil entry, improves the emergence rate and uniformity, and is suitable for harsh working environments such as beaches, saline-alkali lands and windy and sandy lands.

Description

Technical Field

[0001] This invention relates to the field of marine ecological protection and restoration technology, specifically to a device for sowing grass seeds for tidal flat vegetation. Background Technology

[0002] Tidal flats are transitional zones between land and sea in coastal areas, serving as important wetland resources and ecological buffer zones. In recent years, with global climate change and intensified human activities, coastal tidal flats have faced severe ecological pressures. The shrinking area of ​​tidal flat wetlands and the increasingly prominent problem of eutrophication in nearshore waters directly threaten coastal protection, biodiversity, and regional ecological security. Currently, it is estimated that over one million hectares of tidal flat wetlands need restoration along the coast. Traditional manual sowing or single sowing machinery is no longer sufficient to meet the demands of large-scale, standardized, and seasonally concentrated vegetation restoration operations. The core technology for tidal flat vegetation restoration is currently sowing suitable salt-tolerant, flood-tolerant, and soil-stabilizing grass seeds (such as Suaeda salsa). The uniformity, depth of penetration, and density control of grass seed sowing (such as Spartina alterniflora (for remedial reseeding), Phragmites australis, Scutellaria barbata, and Sesbania spp.) directly affect the germination rate, survival rate, and subsequent vegetation coverage, ultimately impacting the effectiveness and cycle of tidal flat ecological restoration. Currently, the use of land-based general-purpose seeders is being modified to allow land-based broadcasting and suspended seeders to be directly transferred to tidal flats for sowing operations. However, when these existing land-based general-purpose seeders are directly transferred to tidal flats for sowing operations, the low density of bare seeds leads to uncontrollable wind deviation and seeding point. They also lack a suitable movement and penetration mechanism for the soft tidal flat foundation. Furthermore, continuous seeding results in flow pulsation and uneven sowing, making the current sowing equipment unable to meet the needs of tidal flat sowing. However, when sowing grass seeds using general-purpose land-based seeders, the density of naked seeds is currently only 0.25-0.4 g / cm³. The seeding process is highly susceptible to wind disturbances and has a low terminal velocity, leading to seeding point deviation and making it impossible to control seed density. Furthermore, after landing on the tidal flat surface, the seeds are directly exposed and cannot effectively penetrate the soil or bind with the substrate. They are easily lost due to wind, waves, and tidal erosion, resulting in generally low vegetation establishment rates. Moreover, in the harsh operating environment of soft, windy, and tidal flats, it is impossible to simultaneously achieve seed pelleting, uniform distribution, quantitative sowing, and precise soil penetration. This leads to problems such as wind deviation of naked seeds in villages and towns, uneven sowing density, and seed loss during current grass seeding processes. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a device for spreading grass seeds for tidal flat vegetation, which solves the problems mentioned in the background section.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a tidal flat vegetation grass seed sowing device, comprising a base plate, a sowing box fixedly installed on the top inner side of the base plate via a connecting frame, a material distribution box integrally connected to the top of the sowing box, and a mixing and granulation cylinder fixedly installed on the top of the material distribution box in the horizontal direction. A hollow shaft is rotatably connected to the inner center of the mixing granulation cylinder. A granulation spiral blade is connected to the edge of the hollow shaft along the spiral direction. An atomizing nozzle is connected to the edge of the hollow shaft at the center of the pitch of the adjacent blades of the granulation spiral blade. The material distribution box is equipped with a flow guide plate and an inner cylinder. The inner wall of the inner cylinder is equipped with a flow guide spiral blade, and a material discharge hole is opened at the bottom of the material distribution box. The inner rotating cylinder is rotatably connected inside the spreading box. The inner rotating cylinder is divided by partition leaves to form a material carrying chamber and has an alignment material hole. The bottom of the spreading box is connected to a discharge cylinder. An extension cone is slidably arranged inside the feeding cylinder. The inner rotating cylinder is driven by a drive motor. The output shaft of the drive motor is connected to a drive triangular disk. The drive triangular disk drives the extension cone to reciprocate up and down by driving the frame and connecting rod. When the alignment hole and the feeding hole are intermittently aligned, the extension cone extends synchronously to the surface of the tidal flat to drop the material.

[0005] As a preferred technical solution of the tidal flat vegetation grass seed sowing device of the present invention, the bottom of the base plate is connected to a terrain-adaptive floating support plate through a connecting frame, and a traction frame is fixedly connected to one side of the base plate in the forward direction. The base plate is connected and combined with a land-based general-purpose seeder through the traction frame. A discharge hopper is installed on one side of the bottom of the mixing granulation cylinder at a position above the screening box, and the bottom discharge end of the discharge hopper is evenly provided with distribution holes. A screening screen is installed at an angle on the inner side of the screening box, and a collection box is slidably connected to the bottom of the screening box via a track.

[0006] As a preferred technical solution of the tidal flat vegetation grass seed sowing device of the present invention, a batching box is connected to the top side of the mixing granulation cylinder, and a screening box is installed on the side of the feed end of the distribution box. The inner side of the ingredient box is evenly equipped with partition plates at equal intervals, and a quantitative ingredient trough communicating with the inside of the mixing and granulation cylinder is opened between two adjacent partition plates. The mixing box uniformly conveys the solidified material, matrix material and grass seed kernel involved in grass seed granulation from the quantitative mixing tank into the mixing granulation cylinder according to the ratio. The mixing granulation cylinder, together with the granulation spiral blade inside, mixes and granulates the grass seed granulation material. The granulation spiral blade is driven by a motor at the side of the mixing granulation cylinder. One end of the hollow rotating shaft is rotatably connected to a hollow bearing, and a liquid replenishment box is installed on the side of the mixing granulation cylinder, with the bottom of the liquid replenishment box connected to the liquid inlet end of the hollow rotating shaft via a connecting liquid pipe. The connecting liquid pipe passes through the hollow bearing and connects to the inside of the hollow rotating shaft. The connecting liquid pipe delivers the nutrient solution pumped in the replenishment box to the hollow rotating shaft, so that the nutrient solution is eventually delivered evenly to the mixing and granulation cylinder by multiple sets of atomizing nozzles.

[0007] As a preferred technical solution of the tidal flat vegetation grass seed sowing device of the present invention, the top of the material distribution box is provided with staggered diversion hoppers of different lengths, the inner two sides of the material distribution box are provided with concentrated inclined grooves, and the inner side of the material distribution box is uniformly installed with diversion guide plates at equal distances along the horizontal direction. A spiral accelerating guide cylinder is connected between two sets of adjacent diversion guide plates. The inner side of the spiral accelerating guide cylinder is provided with guide spiral blades along the spiral direction. The bottom of the material distribution box is provided with a discharge hole at the center position of the bottom of the spiral accelerating guide cylinder. Air nozzles are connected to the sides of the distribution box at the corresponding positions of the concentrated inclined groove. The air inlet of the air nozzle is connected to an air box at the side of the distribution box. A connecting air pipe is connected to the air inlet on one side of the air box. One end of the connecting air pipe is connected to an air source box at the side of the distribution box.

[0008] As a preferred technical solution of the tidal flat vegetation grass seed sowing device of the present invention, the inside of the material distribution box is divided into multiple material distribution chambers by a diversion guide plate. Each material distribution chamber is provided with a concentrated inclined chute on both sides and a spiral acceleration guide cylinder in the middle. The staggered diversion bucket is composed of multiple guide boxes with different conveying lengths, and the discharge end of each guide box is located in the corresponding material distribution chamber. The connecting air pipe delivers the heated and pressurized airflow pumped in the air source box to the air box, and then the air box distributes it evenly to the jet nozzle. The air outlet direction of the jet nozzle is directly opposite the concentrating inclined groove. The air source box is equipped with an air pump and a heating pipe.

[0009] As a preferred technical solution of the tidal flat vegetation grass seed sowing device of the present invention, an inner rotating cylinder is rotatably connected to the inner side of the sowing box. Three sets of alignment material holes are opened on the side of the inner rotating cylinder along the circumferential direction corresponding to the material discharge hole. A separator leaf is installed on the inner side of the inner rotating cylinder at the position between two sets of alignment material holes. A drive motor for driving the inner rotating cylinder to rotate is installed on the side of the sowing box. A material discharge cylinder is connected to the bottom of the sowing box corresponding to the material discharge hole.

[0010] As a preferred technical solution of the tidal flat vegetation grass seed sowing device of the present invention, the inner rotating cylinder is divided into three sets of material carrying chambers by the internal partition leaf. Under the drive of the drive motor, the alignment hole on the side of the inner rotating cylinder is intermittently aligned and connected with the feeding hole and the feeding cylinder inlet.

[0011] As a preferred technical solution of the tidal flat vegetation grass seed sowing device of the present invention, an extension cone is embedded and slidably connected to the inner bottom of the feeding cylinder, and the bottom of the extension cone is fixedly connected to the connecting horizontal plate. The output shaft of the drive motor is connected to a drive triangular disk at the edge of the spreading box. A drive frame is sleeved on the outside of the drive triangular disk. Connecting rods are symmetrically connected to the top and bottom middle of the drive frame. The connecting rod at the bottom of the drive frame is fixedly connected to the edge of the connecting horizontal plate through a connecting block. A limiting frame for limiting the sliding of the connecting rod is installed on the edge of the spreading box.

[0012] As a preferred technical solution of the tidal flat vegetation grass seed sowing device of the present invention, a retaining ring is provided on the bottom inner wall of the feeding cylinder, a limiting ring is provided on the top of the extending cone, the connecting horizontal plate drives multiple sets of extending cones to slide up and down along the corresponding feeding cylinder, and the terrain-following floating support plate has a through groove for the extending cones to pass through.

[0013] As a preferred technical solution of the tidal flat vegetation grass seed sowing device of the present invention, the edge of the driving triangular disk is provided with an arc transition corner, the output shaft of the driving motor is installed at one corner of the driving triangular disk, when the driving triangular disk rotates, it drives the frame to move up and down, and the connecting rod slides along the inside of the limiting frame.

[0014] Compared with the prior art, the present invention provides a device for sowing grass seeds for tidal flat vegetation, which has the following beneficial effects: 1. By setting a feeding box at the top of the mixing and granulating cylinder, and using its internal partition plate and quantitative feeding trough to form a quantitative material distribution structure, the materials required for grass seed granulation can be evenly added into the mixing and granulating cylinder according to the ratio. With the high-speed stirring of the granulating spiral blade driven by the hollow rotating shaft, the material can form grass seed pellets with uniform particle size and high density during the rolling and wrapping process. The pellets are evenly conveyed through multiple points of discharge hopper and distribution holes, so that qualified grass seed pellets are steadily spread onto the screening screen in the screening box. During the rolling process along the screen surface, the pellets are automatically graded according to particle size. Grass seed pellets that do not meet the particle size standard fall into the collection box through the screening screen for centralized recycling, while qualified grass seed pellets are directionally conveyed to the next process. The structure is simple and the operation is stable, which can significantly improve the pellet yield. Furthermore, the hollow rotating shaft forms a liquid channel through its interior, and its end is flexibly connected to the connecting liquid pipe through a hollow bearing. While the hollow rotating shaft rotates, the nutrient solution in the replenishment box can be stably pumped to the atomizing nozzles evenly distributed along the axial direction, realizing the simultaneous stirring and atomization of the nutrient solution. This allows the nutrient solution to penetrate evenly into the grass seed pellets during the granulation process, significantly improving the germination potential and disease resistance of the pellets. It can also form a moisturizing film on the surface of the pellets, preventing the pellets from sticking and clumping due to local accumulation of nutrient solution. Moreover, the weight and density of grass seeds after pelleting are significantly increased, and the influence of wind deflection during falling is greatly reduced, making it easier for them to fall into the soil matrix and achieve natural burial, improving the germination rate and uniformity. It is suitable for harsh working environments such as tidal flats, saline-alkali land, and sandy land.

[0015] 2. The diversion guide plate inside the distribution box facilitates the formation of multiple independent distribution chambers. Combined with the staggered diversion bucket, which is composed of multiple guide boxes of varying lengths connected to the bottom discharge end of the screening screen, the qualified grass seed pellets discharged along the screen surface after screening are staggered and evenly distributed to each distribution chamber according to the principle of equal distribution during the fall. This effectively avoids the problems of pellet accumulation and uneven flow that are easy to occur in traditional single discharge port. This provides a stable and controllable flow basis for subsequent distribution processes. After the grass seed pellets enter each distribution chamber, they are further gathered and accelerated by the concentrated inclined groove set along the side wall of the distribution box before being introduced into the spiral acceleration guide cylinder. The system, in conjunction with the jet nozzle, air box, connecting air pipe, and air source box, synchronously sprays airflow into the distribution chamber. This airflow further dries the pellets, removing residual moisture and increasing their surface hardness and compressive strength, facilitating subsequent descent and distribution. Simultaneously, the airflow accelerates the falling pellets, giving them initial kinetic energy before they enter the spiral accelerating guide cylinder. Combined with the guide spiral blades along the inner wall of the spiral accelerating guide cylinder, the pellets continuously accelerate during their spiral descent, effectively preventing blockages caused by high moisture content and friction during distribution. Furthermore, during spiral transport along the guide spiral blades, the pellets experience sufficient rolling friction and slight collisions with each other and with the cylinder wall, reshaping their shape and further improving their roundness and particle size uniformity. This ensures the flowability and uniformity of the pellets during distribution. Without adding additional mechanical drive components, the system achieves improved pellet hardness and shape maintenance, featuring a simple structure, low energy consumption, and stable performance.

[0016] 3. The inner drum is driven by a drive motor to rotate at low speed. By utilizing the periodic overlapping and alignment relationship between the evenly distributed alignment holes on the side of the inner drum, the bottom discharge hole of the distribution box, and the top inlet of the discharge cylinder, the pellets can be conveyed intermittently and quantitatively. When one pair of alignment holes aligns with the discharge hole and the inlet of the discharge cylinder at the same time, the grass seed pellets in the chamber fall smoothly into the discharge cylinder under the action of gravity. After the alignment hole rotates away from the alignment position, the discharge channel automatically closes to achieve natural interception. Furthermore, the inner rotating drum is divided into multiple material-carrying chambers by partition blades, ensuring that the pellets are always carried by the partition blades as the inner rotating drum rotates. This avoids the problems of relative stillness and centrifugal adhesion of the pellets to the wall caused by the rotation of the inner rotating drum, ensuring that the pellets can be released stably and quantitatively from each material-carrying chamber into the discharge drum. This solves the problems of pellet blockage and flow pulsation during the spreading process. At the same time, this intermittent metering structure does not require additional complex valves and control components. With the stable low-speed output of the drive motor, the pellet spreading amount is uniform and the spreading rhythm is controllable, ensuring the uniformity of grass seed pellet spreading.

[0017] 4. By synchronously connecting the drive triangular disk to the transmission end of the drive motor, the drive motor drives the inner rotating cylinder to rotate simultaneously, and the drive triangular disk rotates synchronously. The drive triangular disk converts the rotational motion into the reciprocating linear lifting motion of the connecting rod through the flexible lifting linkage mechanism composed of the drive frame, connecting rod and limiting frame. This causes the connecting horizontal plate and the extended cone to slide back and forth in the feeding cylinder. When the extended cone moves down to the position of contact or near contact with the surface of the tidal flat, the pellets can fall accurately into the soil along the extended cone. This avoids the seeding position deviation caused by the crosswind during the fall of the pellets, and improves the uniformity of plant spacing and the accuracy of seeding in tidal flats. At the same time, the limiting frame limits the stroke of the connecting rod to ensure that the lifting amplitude of the extended cone is controllable and the working posture is stable. Furthermore, during the reciprocating motion of the drive triangular disc, the slight vibrations generated by the fit clearance and motion inertia can be transmitted to the extending cone through the connecting rod and connecting cross plate. This micro-vibration dislodges mud clumps adhering to the outer wall of the extending cone, preventing mud clumps from accumulating and causing blockage and increased weight of the cone. At the same time, this micro-vibration keeps the pellets inside the extending cone in a slightly shaking state, eliminating mutual jamming and bridging effects between pellets, allowing the pellets to fall stably and continuously, further ensuring the uniformity and continuity of the feed, and improving the reliability and sowing quality of the grass seed spreading device in tidal flat operations.

[0018] In summary, using the drive motor as a single power source, the intermittent metering and spreading of pellets and the reciprocating flexible lifting and feeding of the extended cone are simultaneously achieved. The timing is strictly synchronized and the spatial movements are coordinated. Each time the inner rotating cylinder completes a cycle of alignment, feeding, and misalignment, the drive triangular disk also completes a corresponding rotation cycle, and the connecting rod synchronously completes a stroke from lowering to raising, forming an integrated spreading operation of quantitative supply and precise seeding. In this way, when the extended cone is at its lowest position, it coincides with the moment when the inner rotating cylinder's alignment hole and the feed inlet of the feed cylinder are completely aligned and the batch of pellets are about to be released. This allows the pellets to fall into the soil with the shortest path and the most stable posture, reducing wind deviation, bouncing, and scattering losses caused by air flight. When the extended cone is in the upward return state during the non-dropping period, it can effectively avoid wear and travel resistance caused by continuous friction with the muddy surface of the tidal flat during the journey. The tidal flat vegetation grass seed sowing device enables continuous on-site grass seed pelleting, uniform distribution, quantitative sowing, and precise soil placement, solving the problems of existing bare seed sowing being greatly affected by wind deviation, uncontrollable landing point, and easy seed loss due to exposure. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the material distribution box of the present invention.

[0021] Figure 3 This is a schematic diagram of the structure of the mixing granulation cylinder of the present invention.

[0022] Figure 4 This is a schematic diagram of the granulation spiral blade of the present invention.

[0023] Figure 5 This is a schematic diagram of the spreading box of the present invention.

[0024] Figure 6 This is a schematic diagram of the spiral accelerating guide cylinder of the present invention.

[0025] Figure 7 This is a schematic diagram of the structure of the inner rotating cylinder of the present invention.

[0026] Figure 8 This is a schematic diagram of the structure of the moving frame of the present invention.

[0027] In the diagram: 1. Base plate; 2. Terrain-following floating support plate; 3. Spreading box; 4. Distribution box; 5. Mixing granulation cylinder; 6. Traction frame; 7. Batching box; 8. Screening box; 9. Divider plate; 10. Quantitative batching trough; 11. Hollow rotating shaft; 12. Granulation spiral blade; 13. Discharge hopper; 14. Distribution hole; 15. Screening screen; 16. Collection box; 17. Atomizing nozzle; 18. Hollow bearing; 19. Liquid replenishment box; 20. Connecting liquid pipe; 21. Offset diversion. 21. Bucket; 22. Concentrated chute; 23. Diverting guide plate; 24. Spiral accelerating guide cylinder; 25. Guide spiral blade; 26. Air nozzle; 27. Air box; 28. Connecting air pipe; 29. ​​Air source box; 30. Discharge hole; 31. Inner rotating cylinder; 32. Alignment material hole; 33. Separating leaf; 34. Drive motor; 35. Discharge cylinder; 36. Extending cone; 37. Connecting horizontal plate; 38. Drive triangular disk; 39. Drive frame; 40. Connecting rod; 41. Limiting frame. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0029] In the description of this invention, it should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to or indirectly connected to the other element.

[0030] In the description of this invention, it should be noted that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0031] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] Example: Please refer to Figures 1-8 The present invention provides the following technical solution: a tidal flat vegetation grass seeding device, comprising a base plate 1, the bottom of which is connected to a terrain-adaptive floating support plate 2 via a connecting frame. The terrain-adaptive floating support plate 2 prevents the machine from sinking into the tidal flat by increasing the grounding specific pressure. A traction frame 6 is fixedly connected to one side of the base plate 1 in the forward direction. The base plate 1 is connected to a land-based general-purpose seeder via the traction frame 6. A seeding box 3 is fixedly installed on the inner top of the base plate 1 via a connecting frame. A material distribution box is integrally connected to the top of the seeding box 3. Box 4, the top of the distribution box 4 is fixedly installed with a mixing and granulation cylinder 5 in the horizontal direction, the top side of the mixing and granulation cylinder 5 is connected to a batching box 7, a screening box 8 is installed on the side of the feeding end of the distribution box 4, a discharge hopper 13 is installed on the bottom side of the mixing and granulation cylinder 5 corresponding to the position above the screening box 8, and the bottom discharge end of the discharge hopper 13 is evenly provided with distribution holes 14, a screening screen 15 is installed inclined on the inner side of the screening box 8, and a collection box 16 is slidably connected to the bottom of the screening box 8 through a track; The inner side of the mixing box 7 is evenly equipped with partition plates 9 at equal intervals, and a quantitative dispensing trough 10 communicating with the inside of the mixing granulation cylinder 5 is opened between two adjacent partition plates 9. A hollow rotating shaft 11 is rotatably connected to the middle of the inner side of the mixing granulation cylinder 5, and a granulation spiral blade 12 is connected to the edge of the hollow rotating shaft 11 along the spiral direction. The mixing box 7 uniformly conveys the solidified material, matrix material and grass seed kernels involved in grass seed granulation into the mixing granulation cylinder 5 through the quantitative dispensing trough 10 according to the ratio. The solidified material is a binding and solidifying component, the matrix material is a carrier matrix component, the solidified material accounts for 15% of the total weight, the matrix material accounts for 65% of the total weight, and the grass seed kernels account for 65% of the total weight. The weight is 20%. The solidified material is composed of guar gum / carboxymethyl cellulose and sodium polyacrylate. Sodium polyacrylate is used as a water-retaining agent. The matrix is ​​composed of in-situ fine mud from the tidal flat, humus and slow-release compound fertilizer. Among them, the in-situ fine mud from the tidal flat accounts for 80%, humus accounts for 15%, and slow-release compound fertilizer accounts for 5%. The grass seed kernels are selected from Suaeda salsa / Sedge sedge. The mixing and granulating cylinder 5, together with the granulating spiral blade 12 inside it, mixes and granulates the grass seed granules. The finished grass seed pellets have a diameter of 4mm and a density of 2.0g / cm³. The granulating spiral blade 12 is driven by the motor on the side of the mixing and granulating cylinder 5. The hollow rotating shaft 11 is connected to an atomizing nozzle 17 at the center of the pitch of the adjacent blades of the granulation spiral blade 12. A hollow bearing 18 is rotatably connected to one end of the hollow rotating shaft 11. A replenishment box 19 is installed on the side of the mixing granulation cylinder 5, and the bottom of the replenishment box 19 is connected to the liquid inlet end of the hollow rotating shaft 11 through a connecting liquid pipe 20. The connecting liquid pipe 20 passes through the hollow bearing 18 and communicates with the inside of the hollow rotating shaft 11. The connecting liquid pipe 20 delivers the nutrient solution pumped in the replenishment box 19 to the hollow rotating shaft 11, so that the nutrient solution is finally evenly delivered into the mixing granulation cylinder 5 by multiple sets of atomizing nozzles 17.

[0033] The top of the material distribution box 4 is provided with staggered diversion hoppers 21 of different lengths. The inner sides of the material distribution box 4 are provided with concentrated inclined grooves 22. The inner side of the material distribution box 4 is evenly installed with diversion guide plates 23 at equal distances along the horizontal direction. A spiral accelerating guide cylinder 24 is connected between two sets of adjacent diversion guide plates 23. The inner side of the spiral accelerating guide cylinder 24 is provided with a guide spiral blade 25 along the spiral direction. The bottom of the material distribution box 4 is provided with a discharge hole 30 at the center position of the bottom of the spiral accelerating guide cylinder 24. Air nozzles 26 are connected to the sides of the distribution box 4 at the positions corresponding to the edges of the concentrated inclined chute 22. The air inlet end of the air nozzle 26 is connected to an air box 27 at the edge of the distribution box 4. An air inlet end of the air box 27 is connected to a connecting air pipe 28. One end of the connecting air pipe 28 is connected to an air source box 29 at the edge of the distribution box 4. An air pump and a heating pipe are installed in the air source box 29. The interior of the distribution box 4 is divided into multiple distribution chambers by a diversion guide plate 23. Each distribution chamber has a concentrated inclined chute 22 on both sides and a spiral acceleration guide cylinder 24 in the middle. The staggered diversion bucket 21 is composed of multiple guide boxes with different conveying lengths. The discharge end of each guide box is located in the corresponding distribution chamber. Specifically, the staggered diversion bucket 21 is composed of 5 guide boxes with a conveying length difference of 30mm, corresponding to 5 distribution chambers. The measured deviation of the pellet flow rate in each chamber is less than 5%. The air pipe 28 connects to the air source box 29, which pumps heated and pressurized airflow to the air box 27. The air box 27 then distributes the airflow evenly to the nozzle 26. The nozzle 26 is directed to the concentrated inclined trough 22. The air source box 29 is equipped with an air pump and a heating pipe to heat the airflow and apply pressure to it. After drying, the grass seed pellets have a compressive strength ≥2N / particle and a brittleness rate of less than 3%. They can be dropped freely from a height of 1m onto the muddy tidal flat without breaking.

[0034] An inner rotating cylinder 31 is rotatably connected to the inner side of the spreading box 3. Three sets of alignment holes 32 are opened on the side of the inner rotating cylinder 31 along the circumferential direction corresponding to the feeding hole 30. A separator leaf 33 is installed on the inner side of the inner rotating cylinder 31 at the position between two sets of alignment holes 32. A drive motor 34 is installed on the side of the spreading box 3 to drive the inner rotating cylinder 31 to rotate. The drive motor 34 outputs a speed of 10 rpm. A feeding cylinder 35 is connected to the bottom of the spreading box 3 at the feeding hole 30. The overlap time of the inner rotating cylinder 31, the alignment holes 32 and the feeding hole 30 accounts for 1 / 3 of the rotation cycle. During the overlap, the extended cone 36 is at the lower stop position. The inner rotating cylinder 31 is divided into three sets of material carrying chambers by the separator leaf 33 inside. Under the drive of the drive motor 34, the alignment holes 32 on the side of the inner rotating cylinder 31 are intermittently aligned and connected with the feeding hole 30 and the feeding cylinder 35 inlet.

[0035] An extended cone 36 is slidably connected to the inner bottom of the feeding cylinder 35. The lifting stroke of the extended cone 36 is 100mm. The bottom of the extended cone 36 is fixedly connected to the connecting horizontal plate 37. The output shaft of the drive motor 34 is connected to a drive triangular disk 38 at the side of the spreading box 3. The eccentricity of the drive triangular disk 38 is 25mm. The speed ratio of the inner rotating cylinder 31 to the drive triangular disk 38 is 1:1. A drive frame 39 is sleeved on the outer side of the drive triangular disk 38. Connecting rods 40 are symmetrically connected to the top and bottom middle of the drive frame 39. The connecting rods 40 at the bottom of the drive frame 39 are fixedly connected to the side of the connecting horizontal plate 37 through a connecting block. A limiting frame 41 is installed on the side of the spreading box 3 to limit the sliding of the connecting rods 40. A retaining ring is provided on the bottom inner wall of the feeding cylinder 35. A limiting ring is provided on the top of the extended cone 36. The downward extension position is restricted. The connecting horizontal plate 37 drives multiple sets of extending cones 36 to slide up and down along the corresponding feeding cylinder 35. The terrain-following floating support plate 2 has a through groove for the extending cones 36 to pass through. The edge of the driving triangular disk 38 is provided with an arc transition corner. The output shaft of the driving motor 34 is installed at one corner of the driving triangular disk 38. When the driving triangular disk 38 rotates, it drives the frame 39 to slide up and down. The connecting rod 40 slides along the inside of the limiting frame 41. The driving motor 34 and the driving triangular disk 38 drive the frame 39 to slide up and down reciprocally. The corner of the driving triangular disk 38 is eccentrically installed on the output shaft of the driving motor 34. When the driving triangular disk 38 rotates, it converts the rotational motion into the reciprocating linear motion of the connecting rod 40 through the driving frame 39. The connecting rod 40 drives the extending cones 36 to slide up and down in the feeding cylinder 35. The inner rotating cylinder 31 rotates under the drive of the drive motor 34. The alignment hole 32 on its side periodically overlaps and aligns with the discharge hole 30 at the bottom of the distribution box 4 and the feed inlet at the top of the discharge cylinder 35 to achieve intermittent feeding. The end point of the downward stroke of the extension cone 36 is synchronously configured with the discharge alignment phase of the inner rotating cylinder 31, so that the pellets are released when the extension cone 36 contacts the tidal flat surface. The inner rotating cylinder 31 is intermittently rotated and the extension cone 36 is reciprocated and raised and lowered by a single drive motor 34, so that the pellet supply and the cone drop are strictly synchronized in time. When the extension cone 36 is at its lowest position, the alignment hole 32 of the inner rotating cylinder 31 is completely aligned with the discharge hole 30. The pellets fall into the tidal flat matrix with the shortest path, which significantly reduces wind deviation and bounce loss.

[0036] The working principle and usage process of this invention are as follows: First, the base plate 1 of the grass seed spreading device is connected to the land-based universal seeder via the traction frame 6 on one side of the base plate 1 in the forward direction. The land-based universal seeder drives the grass seed spreading device to move synchronously along the tidal flat. Based on the terrain-following floating support plate 2 at the bottom of the base plate 1, the grass seed spreading device can move more flexibly and will not get stuck on the soft tidal flat. Then, through the mixing box 7, combined with the partition plate 9 and the quantitative mixing trough 10, the proportion of materials required for grass seed granulation is evenly added to the mixing granulation cylinder 5. The materials required for grass seed granulation include solids, matrix materials and grass seed kernels. The motor of the mixing granulation cylinder 5 is started to drive the hollow rotating shaft 11 and the granulation spiral blade 12 to rotate, thereby realizing the granulation of grass seeds. Simultaneously, using the atomizing nozzle 17 on the side of the hollow rotating shaft 11, combined with the liquid transport passage formed by the hollow bearing 18 and the connecting liquid pipe 20, the liquid nutrient solution in the replenishment box 19 is pumped and transported to the hollow rotating shaft 11 and the atomizing nozzle 17 when the hollow rotating shaft 11 rotates. This allows the nutrient solution to be evenly sprayed from the atomizing nozzle 17 into the mixing granulation cylinder 5, facilitating grass seed granulation while allowing the nutrient solution to evenly penetrate the surface of the pellets during the granulation process, improving the germination potential and disease resistance of the pellets. After grass seed granulation, the grass seed pellets are evenly transported to the screening box 8 through the discharge hopper 13 and the distribution hole 14, allowing the grass seed pellets to roll evenly along the screening mesh 15. The screening mesh 15 and the collection box 16 are used to remove and collect grass seed pellets that do not meet the standards. Grass seed pellets are conveyed by the rolling conveyor of the screening screen 15 and fall into the distribution box 4. The diversion guide plate 23 divides the distribution box 4 into multiple distribution chambers. The staggered diversion bucket 21 at the top of the distribution box 4 is connected to the bottom discharge end of the screening screen 15. The qualified grass seed pellets are evenly conveyed by the staggered diversion bucket 21, which is composed of multiple guide boxes with different conveying lengths, so that the grass seed pellets are evenly conveyed into multiple distribution chambers. The concentrated inclined groove 22 on the side wall of the distribution box 4 is used to concentrate and accelerate the grass seed pellets entering the corresponding distribution chambers into the spiral accelerating guide cylinder 24. Simultaneously, airflow is sprayed into the distribution chamber in conjunction with the jet nozzle 26, air box 27, connecting air pipe 28, and air source box 29. This allows the grass seed pellets to fall smoothly under the acceleration of the airflow when they enter the distribution chamber, further drying the grass seed pellets and increasing their hardness. The airflow also accelerates the grass seed pellets to a certain initial speed before they enter the spiral acceleration guide cylinder 24. The spiral guide blades 25 inside the spiral acceleration guide cylinder 24 prevent the grass seed pellets from getting clogged during the distribution and conveying process. During the spiral conveying of the grass seed pellets along the spiral guide blades 25, the grass seed pellets are shaped and their shape is maintained. When the grass seed pellets are conveyed downward by the spiral accelerating guide cylinder 24, the grass seed pellets enter the spreading box 3 through the discharge hole 30. The drive motor 34 is started to drive the inner rotating cylinder 31 to rotate at a low speed, so that the alignment hole 32 on the side of the inner rotating cylinder 31 is periodically aligned and connected with the discharge hole 30 and the top feed port of the discharge cylinder 35. This allows the grass seed pellets to enter the inner rotating cylinder 31 intermittently through the discharge hole 30. The partition leaf 33 divides the internal space of the inner rotating cylinder 31 into three sets of material carrying chambers, so that the inner rotating cylinder 31 carries the grass seed pellets and rotates. The grass seed pellets enter the discharge cylinder 35 under the action of gravity, which avoids the grass seed pellets from getting blocked during the spreading and conveying in the spreading box 3. At the same time, the drive motor 34 drives the inner rotating cylinder 31 to rotate, and simultaneously drives the drive triangular disk 38 to rotate. In conjunction with the drive frame 39, the connecting rod 40 and the limiting frame 41, the drive triangular disk 38 and the drive frame 39 drive the connecting rod 40 to move back and forth. The connecting rod 40 drives the connecting horizontal plate 37 and the extended cone 36 to slide back and forth from the feeding cylinder 35, so that the extended cone 36 moves down to the position of contact with the mudflat. This allows the grass seed pellets to be accurately delivered into the mudflat along the extended cone 36, improving the sowing effect. Furthermore, with the drive motor 34 as the sole power source, the inner rotating drum 31 completes one cycle of alignment, feeding, and misalignment, while the drive triangular disk 38 completes one rotation cycle accordingly. The connecting rod 40 simultaneously completes one stroke from lowering to raising, thereby achieving intermittent metering and spreading of pellets and coordinated operation of reciprocating flexible lifting and lowering feeding of the extended cone 36. The two are strictly synchronized in time rhythm and cooperate with each other in spatial movement, realizing an integrated spreading operation of quantitative supply and precise seeding. In addition, when the drive triangular disk 38 drives the frame 39 to move, the slight vibration generated between them facilitates the transmission of vibration to the extended cone 36, thereby cleaning the adhering soil and making the grass seed pellets fall more stably along the extended cone 36.

[0037] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for sowing grass seeds for tidal flat vegetation, comprising a base plate (1), characterized in that, A spreading box (3) is fixedly installed on the top inner side of the bottom plate (1) via a connecting frame. A distributing box (4) is integrally connected to the top of the spreading box (3). A mixing and granulation cylinder (5) is fixedly installed on the top of the distributing box (4) in the horizontal direction. A hollow shaft (11) is rotatably connected to the inner middle of the mixing granulation cylinder (5). A granulation spiral blade (12) is connected to the edge of the hollow shaft (11) along the spiral direction. An atomizing nozzle (17) is connected to the edge of the hollow shaft (11) at the pitch center of the adjacent blades of the granulation spiral blade (12). The material distribution box (4) is provided with a flow guide plate (23) and an inner cylinder (24). The inner wall of the inner cylinder (24) is provided with a flow guide spiral blade (25). The bottom of the material distribution box (4) has a discharge hole (30). The inner rotating cylinder (31) is rotatably connected inside the spreading box (3). The inner rotating cylinder (31) is divided by the partition leaf (33) to form a material carrying chamber and has an alignment material hole (32). The bottom of the spreading box (3) is connected to the discharge cylinder (35). An extension cone (36) is slidably arranged inside the feeding cylinder (35). The inner rotating cylinder (31) is driven by a drive motor (34). The output shaft of the drive motor (34) is connected to a drive triangular disk (38). The drive triangular disk (38) drives the extension cone (36) to reciprocate up and down by driving the frame (39) and the connecting rod (40). When the alignment hole (32) and the feeding hole (30) are intermittently aligned, the extension cone (36) extends synchronously down to the surface of the tidal flat to drop the material.

2. The device for sowing grass seeds for tidal flat vegetation according to claim 1, characterized in that, The bottom of the base plate (1) is connected to a terrain-following floating support plate (2) via a connecting frame. A traction frame (6) is fixedly connected to one side of the base plate (1) in the forward direction. The base plate (1) is connected and combined with the land-based general-purpose seeder via the traction frame (6). A discharge hopper (13) is installed on one side of the bottom of the mixing granulation cylinder (5) at a position above the sieve box (8), and the bottom discharge end of the discharge hopper (13) is evenly provided with distribution holes (14). The screening box (8) is inclinedly installed with a screening screen (15), and the bottom of the screening box (8) is slidably connected to a collection box (16) by means of a track.

3. The device for sowing grass seeds for tidal flat vegetation according to claim 1, characterized in that, A batching box (7) is connected to the top side of the mixing granulation cylinder (5), and a screening box (8) is installed on the side of the feed end of the distribution box (4). The inner side of the ingredient box (7) is evenly equipped with partition plates (9), and a quantitative ingredient trough (10) communicating with the inside of the mixing granulation cylinder (5) is opened between two adjacent partition plates (9). The mixing box (7) uniformly conveys the solidified material, matrix material and grass seed kernel involved in grass seed granulation from the quantitative mixing tank (10) into the mixing granulation cylinder (5) according to the ratio. The mixing granulation cylinder (5) works with the granulation spiral blade (12) inside to mix and granulate the grass seed granulation material. The granulation spiral blade (12) is driven by the motor on the side of the mixing granulation cylinder (5). One end of the hollow rotating shaft (11) is rotatably connected to a hollow bearing (18), and a liquid replenishment box (19) is installed on the side of the mixing granulation cylinder (5), and the bottom of the liquid replenishment box (19) is connected to the liquid inlet end of the hollow rotating shaft (11) through a connecting liquid pipe (20). The connecting liquid pipe (20) passes through the hollow bearing (18) and communicates with the hollow rotating shaft (11). The connecting liquid pipe (20) delivers the nutrient solution pumped in the replenishment box (19) to the hollow rotating shaft (11), so that the nutrient solution is eventually delivered evenly to the mixing granulation cylinder (5) by multiple sets of atomizing nozzles (17).

4. The device for sowing grass seeds for tidal flat vegetation according to claim 1, characterized in that, The top of the material distribution box (4) is provided with staggered diversion buckets (21) of different lengths. The inner sides of the material distribution box (4) are provided with concentrated inclined grooves (22). Diversion guide plates (23) are evenly installed at equal distances along the horizontal direction on the inner side of the material distribution box (4). A spiral acceleration guide cylinder (24) is connected between two sets of adjacent diversion guide plates (23). A guide spiral blade (25) is provided along the spiral direction on the inner side of the spiral acceleration guide cylinder (24). A discharge hole (30) is opened at the bottom of the material distribution box (4) corresponding to the center position of the bottom of the spiral acceleration guide cylinder (24). The two side walls of the distribution box (4) are connected to the air nozzles (26) at the positions corresponding to the edges of the central inclined groove (22). The air inlet of the air nozzle (26) is connected to the air box (27) at the edge of the distribution box (4). The air inlet of the air box (27) is connected to the connecting air pipe (28). One end of the connecting air pipe (28) is connected to the air source box (29) at the edge of the distribution box (4).

5. The tidal flat vegetation seeding device according to claim 4, characterized in that, The material distribution box (4) is divided into multiple material distribution chambers by a diversion guide plate (23). Each material distribution chamber has a concentrated inclined groove (22) on both sides and a spiral acceleration guide cylinder (24) in the middle. The staggered diversion bucket (21) is composed of multiple guide boxes with different conveying lengths, and the discharge end of each guide box is located in the corresponding material distribution chamber. The connecting air pipe (28) delivers the heated and pressurized airflow pumped in the air source box (29) to the air box (27), and then the air box (27) distributes it evenly to the jet nozzle (26). The air outlet direction of the jet nozzle (26) is directly opposite the concentrating inclined groove (22). The air source box (29) is equipped with an air pump and a heating pipe.

6. The tidal flat vegetation seeding device according to claim 4, characterized in that, The inner side of the spreading box (3) is rotatably connected to an inner rotating cylinder (31). The inner rotating cylinder (31) has three sets of alignment holes (32) on its side along the circumferential direction corresponding to the feeding hole (30). A separator leaf (33) is installed on the inner side of the inner rotating cylinder (31) at the position between two sets of alignment holes (32). A drive motor (34) for driving the inner rotating cylinder (31) to rotate is installed on the side of the spreading box (3). A feeding cylinder (35) is connected to the bottom of the spreading box (3) corresponding to the feeding hole (30).

7. The device for sowing grass seeds for tidal flat vegetation according to claim 6, characterized in that, The inner rotating cylinder (31) is divided into three sets of material carrying chambers by the internal partition leaf (33). Under the drive of the drive motor (34), the inner rotating cylinder (31) has intermittent alignment and communication between the alignment hole (32) on its side and the feed hole (30) and the feed inlet of the feed cylinder (35).

8. The tidal flat vegetation seeding device according to claim 6, characterized in that, The bottom of the feed cylinder (35) is fitted with a sliding extension cone (36), and the bottom of the extension cone (36) is fixedly connected to the connecting horizontal plate (37). The output shaft of the drive motor (34) is connected to a drive triangular disk (38) at the side of the spreading box (3). A drive frame (39) is sleeved on the outside of the drive triangular disk (38). A connecting rod (40) is symmetrically connected to the top and bottom middle of the drive frame (39). The connecting rod (40) at the bottom of the drive frame (39) is fixedly connected to the side of the connecting horizontal plate (37) through a connecting block. A limiting frame (41) is installed on the side of the spreading box (3) to limit the sliding of the connecting rod (40).

9. A device for sowing grass seeds for tidal flat vegetation according to claim 8, characterized in that, The bottom inner wall of the feed cylinder (35) is provided with a retaining ring, the top of the protruding cone (36) is provided with a limiting ring, the connecting horizontal plate (37) drives multiple sets of protruding cones (36) to slide up and down along the corresponding feed cylinder (35), and the terrain-following floating support plate (2) has a through groove for the protruding cones (36) to pass through.

10. A device for sowing grass seeds for tidal flat vegetation according to claim 8, characterized in that, The drive triangle (38) has a rounded transition corner on its side. The output shaft of the drive motor (34) is installed at one corner of the drive triangle (38). When the drive triangle (38) rotates, it drives the frame (39) to move up and down. The connecting rod (40) slides along the inside of the limiting frame (41).

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