Sugarcane planting fertilizer production device and method

Abstract

The invention discloses a sugarcane planting fertilizer production device and method, and relates to the technical field related to fertilizer production, the sugarcane planting fertilizer production device comprises a base and a roller arranged on the base, the roller is driven by a driving system to rotate circumferentially, and a feeding mechanism and a water spraying mechanism are arranged at the two axial ends of the roller respectively. Materials roll in the roller to gradually form fertilizer particles, a plurality of material stirring blocks are sequentially arranged on the inner wall of the roller in the circumferential direction, and the material stirring blocks are in a protruding shape on the inner wall of the roller. In the circumferential rotation stroke of the roller, the lifting distance of the material is prolonged by the material stirring block; according to the invention, the plurality of protruding material stirring blocks are arranged in the roller, so that in the rotating process of the roller, the distance for driving materials to ascend is increased, and the distance for driving the materials to roll downwards is also increased, so that more materials can be attached to the materials in the rolling process to quickly form granules, and the granulation efficiency in the fertilizer production process is improved.

Description

Technical Field

[0001] This invention relates to the field of fertilizer production technology, specifically to a fertilizer production apparatus and method for sugarcane cultivation. Background Technology

[0002] It is common knowledge that fertilizers need to be applied regularly during sugarcane cultivation. The fertilizer production process varies slightly depending on the type of fertilizer (such as organic fertilizer, compound fertilizer, NPK fertilizer, etc.), but it can generally be divided into the following steps: raw material processing, mixing / fermentation, granulation, drying, cooling, screening, coating, and packaging.

[0003] Among the various methods for fertilizer granulation production, there are disc granulation, drum granulation, and extrusion granulation. Drum granulation, in particular, utilizes a drum granulator that, during operation, achieves granulation through mechanical structure based on the friction, centrifugal force, and gravity of the material within the rotating drum. Specifically, the drive system drives the drum to rotate circumferentially. Dry powder is quantitatively fed into the drum through a screw feeder, while a water sprayer injects atomized water. The material rises along the drum wall within the drum and gathers towards the drum wall under the action of centrifugal force. Simultaneously, it generates relative rolling friction with the descending material. The friction causes the material to gradually adhere into a spherical shape, and finally rolls along the axial direction of the drum from the high end to the low end, forming uniform granules.

[0004] For example, patent CN219784662U, published on October 3, 2023, entitled "A Roller Granulator for Granular Fertilizer Production," includes: a base; a support rod fixedly connected to the outer surface of the base; a roller rotatably connected to the outer surface of the support rod; a toothed ring fixedly connected to the outer surface of the roller; a feed inlet on the outer surface of the roller; and a motor fixedly connected to the outer surface of the base. In this invention, two rollers fit against the inner wall of the roller and rotate with it, maintaining a gap between the scraper on the connecting frame and the roller to prevent wear. When there are clumps inside the roller, the scraper removes them as the roller rotates. The filter plate slides up and down in the collection chamber, vibrating under the action of a spring. Suitable granules leave the collection chamber through the discharge port, while smaller granules pass through the filter plate and fall into the conveying device below, away from the collection chamber, for easy re-feeding into granulation. This eliminates the need for manual sorting, saving time and effort.

[0005] The shortcoming of the existing technology is that the drum granulator still has certain limitations in actual use. The traditional drum relies on friction to transport powdery materials to a high place during rotation, which reduces the efficiency of the transportation method and leads to a decrease in production efficiency. Summary of the Invention

[0006] The purpose of this invention is to provide a fertilizer production device and method for sugarcane cultivation, thereby solving the technical problems in related technologies.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A fertilizer production device for sugarcane planting includes a base and a roller arranged on the base. The roller is driven by a drive system to rotate circumferentially. A feeding mechanism and a water spraying mechanism are respectively arranged at both ends of the roller's axial direction. During operation, the material rolls inside the roller and gradually forms fertilizer granules. Several material-pushing blocks are arranged circumferentially on the inner wall of the roller, and the material-pushing blocks are protruding on the inner wall of the roller. During the circumferential rotation of the roller, the material-pushing blocks extend the rising distance of the material.

[0009] As described above, rings are rotatably mounted on both ends of the roller. The ring at one end of the roller is hinged to the base, and the ring at the other end swings on the base with the hinge as the swing axis.

[0010] The aforementioned drive system includes a geared motor mounted on the base and a geared ring mounted on the other end of the drum via a screw. A drive gear is mounted on the power output end of the geared motor, and the drive gear meshes with the geared ring. The eccentricity of the geared ring is adjusted by rotating the screw.

[0011] As described above, the material-pushing block is oscillatingly arranged on the inner wall of the drum, and a first elastic element is provided between the material-pushing block and the inner wall of the drum. A pushing gear is installed at the end of the swing shaft of the material-pushing block, and multiple sets of first pushing racks are installed on the ring body. Along the rotation direction of the drum, the number of teeth of each set of first pushing racks increases sequentially.

[0012] As described above, the material-pushing block has a first screening chamber and a second screening chamber. The first screening chamber is connected to the inside of the drum. A screening screen is provided between the first screening chamber and the second screening chamber. Screening holes are provided in the second screening chamber. The mesh size of the screening screen is larger than the size of the screening holes. A discharge hole is also provided in the second screening chamber, which is connected to the outside of the drum. The material-pushing block's circumferential rotation stroke includes: an ascending section, where the material entering the first screening chamber passes through the screening screen and is screened for the first time; when the actuating gear meshes with each set of first actuating racks, the screening holes are connected to the inside of the drum for a second screening of the material; and a descending section, where the material in the first screening chamber re-enters the inside of the drum, and the material in the second screening chamber is discharged from the drum through the discharge hole.

[0013] The arrangement of the multiple sets of the first actuating racks on the ring body corresponds to the rising segment of the material feeding block's stroke as it follows the rotation of the roller.

[0014] As described above, the screening mesh is slidably arranged within the feeding block, and a second elastic element is provided between the screening mesh and the feeding block in the sliding direction. Based on the elastic force of the second elastic element, the screening mesh tends to be located at the junction of the first screening chamber and the second screening chamber. Based on the oscillation action of the feeding block, the screening mesh tends to move away from the second screening chamber.

[0015] As described above, the screening mesh has multiple crisscrossing cutters arranged on the side away from the second screening chamber. During the movement of the screening mesh away from the second screening chamber, the multiple cutters work with the cavity wall of the first screening chamber to cut the material in the first screening chamber.

[0016] As mentioned above, the screening screen is equipped with an extension section, which blocks the discharge hole when the actuating gear does not mesh with the first actuating rack.

[0017] This invention also relates to a method for producing fertilizer for sugarcane cultivation, which includes the following steps when producing fertilizer for sugarcane cultivation using the aforementioned sugarcane cultivation fertilizer production device:

[0018] Step 1: Material filling. The feeding mechanism fills the material into the drum. The drum is driven by the drive system to rotate circumferentially. At the same time, the water spraying mechanism sprays atomized water to wet the material.

[0019] Step 2: Fertilizer forming. The moistened material rolls continuously under the action of gravity and friction. The fine powder of the moistened material collides and adheres to each other during the rolling, gradually forming granules. The granules gradually become denser during the process of repeated drops and rolling.

[0020] Step 3: Fertilizer grading. The formed fertilizer granules have different particle sizes, and the mixed material powder is carried into the first screening chamber by the feeding block. Particles exceeding the target particle size remain in the first screening chamber, while particles that meet the target particle size and material powder enter the second screening chamber for secondary screening. In the ascending section, particles of the target particle size remain in the second screening chamber, while material powder re-enters the drum, and the fertilizer granules in the first screening chamber are broken. In the descending section, fertilizer granules of the target particle size are discharged from the discharge hole, and the broken fertilizer granules re-enter the drum.

[0021] The beneficial effects of this invention are as follows: by setting several protruding material-pushing blocks inside the drum, the distance the material rises during the rotation of the drum can be increased, and the distance the material rolls downwards can also be increased, so that more material can adhere to the material during the rolling process, quickly forming granules and improving the granulation efficiency in the fertilizer production process. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0023] Figure 1 A first-view perspective three-dimensional structural diagram of a fertilizer production device for sugarcane planting provided by the present invention;

[0024] Figure 2 A second-view perspective three-dimensional structural diagram of a fertilizer production device for sugarcane planting provided by the present invention;

[0025] Figure 3 A schematic diagram of the planar structure of several material feeding blocks at various positions inside the drum in a fertilizer production device for sugarcane planting provided by the present invention.

[0026] Figure 4 for Figure 3 Enlarged cross-sectional structural diagram at point A in the diagram;

[0027] Figure 5 for Figure 3 A magnified cross-sectional structural diagram at point B in the diagram;

[0028] Figure 6 A schematic diagram of the planar structure of the extrusion rod and locking rod of a fertilizer production device for sugarcane planting provided by the present invention;

[0029] Figure 7 A schematic diagram of the annular planar structure of a fertilizer production device for sugarcane planting provided by the present invention;

[0030] Figure 8 for Figure 7 Enlarged structural diagram at point C;

[0031] Figure 9 This is a three-dimensional structural diagram of a screening screen for a fertilizer production device for sugarcane cultivation provided by the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Base; 2. Drum; 3. Drive system; 30. Gear motor; 31. Drive gear; 32. Gear ring; 33. Screw; 34. Ring body; 4. Feeding block; 40. Bottom surface; 41. Feeding surface; 42. Actuating gear; 43. First actuating rack; 44. First screening chamber; 45. Second screening chamber; 46. Screening screen; 460. Cutter; 461. Extension section; 47. Screening hole; 48. Discharge hole; 49. Extrusion rod; 490. First bending part; 491. First extrusion block; 492. Second bending part; 493. Second extrusion block; 50. Locking rod; 500. First extrusion position; 501. Second extrusion position; 51. Locking hole; 52. Second actuating rack; 53. Third actuating rack. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solution of the present invention, the following will be described in conjunction with the appendix. Figure 1 To be continued Figure 9 The present invention will now be described in further detail.

[0035] One embodiment of the present invention relates to a fertilizer production device for sugarcane planting, including a base 1 and a roller 2 arranged on the base 1. The roller 2 is driven by a drive system 3 to rotate circumferentially. A feeding mechanism and a water spraying mechanism are respectively arranged at both ends of the roller 2 along the axial direction. During operation, the material rolls inside the roller 2 and gradually forms fertilizer granules. A plurality of material-pushing blocks 4 are arranged circumferentially on the inner wall of the roller 2. The material-pushing blocks 4 are protruding on the inner wall of the roller 2. During the circumferential rotation of the roller 2, the material-pushing blocks 4 extend the rising distance of the material.

[0036] Specifically, base 1 is used to support the operation of roller 2, that is, base 1 is used to place on a foundation, such as the ground. Base 1 is equipped with a bracket for rotating and mounting roller 2. During operation, roller 2 is tilted at an angle of 2-4 degrees and is driven by drive system 3 to rotate circumferentially at a speed controlled at 8-15 revolutions per minute. When producing fertilizer granules for sugarcane planting, the feeding mechanism (this is existing technology and will not be described in detail here, nor is it specifically shown in the figure) quantitatively conveys the raw material powder for fertilizer production from the high end of roller 2 into roller 2. Then, the water spraying mechanism (this is existing technology and will not be described in detail here, nor is it specifically shown in the figure) sprays atomized water to wet the material powder. After the atomized water wets the material powder, an extremely thin liquid film is formed on the surface of the material, generating surface tension and capillary force, thus wetting the powder. When the material is rotated by the roller 2, the friction generated by the interaction and its own gravity cause it to tumble continuously inside the roller 2, falling in a "waterfall" shape. The wet material collides and adheres to each other during the rolling, gradually forming "seed" particles of 0.5 mm. Then, a new layer of powder continues to coat them, and the particle size gradually increases. In the process of multiple falls and rolling, the internal voids of the particles are further compressed, the surface becomes smooth and dense, and the mechanical strength is significantly improved until the target particle size is reached, which is generally 2-6 mm. Because the roller 2 is arranged at an angle, the particles that have reached the target particle size will be preferentially thrown to the lower end of the roller 2. However, in the existing technology, the roller 2 relies only on friction to transport the material powder to a higher position during the rotation process. This transportation method reduces efficiency, resulting in a decrease in production efficiency.

[0037] Therefore, in this embodiment, to solve the above problems, several material-pushing blocks 4 are arranged sequentially along the circumference inside the drum 2. The material-pushing blocks 4 protrude from the inner wall of the drum 2, and have a cross-section similar to a triangle. Along the rotation direction of the drum 2, the side opposite to the rotation direction is the bottom surface 40, the side facing the rotation direction is the material-pushing surface 41, and the other side is inside the wall of the drum 2. The material-pushing blocks 4 are generally elongated. During the rotation of the drum 2, the material powder inside the drum 2 can be pushed by the material-pushing surface 41 of the material-pushing blocks 4. That is, during the rotation stroke of the drum 2, the side facing the rotation direction can form a concave structure with the inner wall of the drum 2. When the drum 2 rotates to the lowest point, the material powder enters the concave structure. As the drum 2 rotates, the material powder is gradually lifted, and the material-pushing surface 41 gradually tilts. The concave structure formed with the inner wall of the drum 2 can no longer prevent the material powder from moving downward due to gravity. This can effectively extend the rising distance of the material powder, that is, increase the rolling path of the material powder.

[0038] In some cases, when the powdered material is rolled into spherical particles, it needs to be moistened with water mist. This can cause the powdered material to clump together and become unable to move with the rest of the material. In this embodiment, the recessed structure can better lift the clumped material together. As the clumped material moves downward due to gravity, the increased upward distance increases the probability of the clumped material breaking, thereby reducing the occurrence of clumped material.

[0039] The beneficial effect of this embodiment is that by setting a number of protruding material-pushing blocks 4 inside the drum 2, the distance that the material rises during the rotation of the drum 2 can be increased, and the distance that the material rolls down will also increase. This allows the material to adhere to more material during the rolling process, quickly forming granules and improving the granulation efficiency in the fertilizer production process.

[0040] Preferably, both ends of the roller 2 are rotatably mounted with rings 34. One end of the ring 34 is hinged to the base 1, and the other end of the ring 34 is oscillating on the base 1 with the hinge as the swing axis.

[0041] Specifically, the ring 34 at one end of the roller 2 is hinged to the support on the base 1. An arc-shaped groove is provided on the part of the support corresponding to the other end of the roller 2. The center of the arc-shaped groove is on the rotation axis of the hinge. A slide rod is installed on the ring 34 at the other end of the roller 2. The slide rod slides in the arc-shaped groove. Then, the roller 2 can be driven to rotate by the drive system 3. The tilt angle of the roller 2 can be controlled by adjusting the position of the slide rod in the groove according to actual needs.

[0042] Preferably, the drive system 3 includes a geared motor 30 mounted on the base 1 and a gear ring 32 mounted on the other end of the roller 2 via a screw 33. A drive gear 31 is mounted on the power output end of the geared motor 30. The drive gear 31 meshes with the gear ring 32. The eccentricity of the gear ring 32 is adjusted by rotating the screw 33.

[0043] Specifically, in the aforementioned embodiments, the tilt angle of the roller 2 can be controlled by controlling the position of the slide bar in the chute. However, in application, if the discharged fertilizer particles contain a large amount of powder or the fertilizer is different from the target particle size, the tilt angle of the roller 2 needs to be adjusted to increase the forming time of the fertilizer particles. This embodiment provides another method, that is, the toothed ring 32 arranged at the other end of the roller 2 can be eccentrically arranged. The eccentric distance is adjusted by the screw 33, and then the reduction motor 30 drives the toothed ring 32 to rotate through the drive gear 31. The toothed ring 32 drives the roller 2 to rotate. In this way, the other end of the roller 2 can change up and down alternately, that is, the fertilizer particles roll from one end to the other end inside the roller 2, and then roll from the other end to the first end until the target particle size is reached.

[0044] Preferably, the material-pushing block 4 is oscillatingly arranged on the inner wall of the drum 2, and a first elastic element is provided between the material-pushing block 4 and the inner wall of the drum 2. A swaying gear 42 is installed at the end of the swaying shaft of the material-pushing block 4, and multiple sets of first swaying racks 43 are installed on the ring body 34. Along the rotation direction of the drum 2, the number of teeth of each set of first swaying racks 43 increases sequentially.

[0045] Specifically, in the aforementioned embodiments, the recessed structure formed by the feeding surface 41 on the feeding block 4 and the inner wall of the drum 2 allows material powder to enter at its lowest point during rotation. This recessed structure then drives the material powder upwards. Since the material powder needs to be moistened by spraying water mist to roll into spherical particles, it may clump together and fail to move with the rest of the material. In the aforementioned embodiments, increasing the lifting distance increases the downward distance of the clumped material, increasing the probability of breakage. In this embodiment, the feeding block 4 is oscillatingly arranged on the inner wall of the drum 2, and the elastic force of the first elastic element and the prying action of multiple sets of first actuating racks 43 create a bumpy, vibrating motion as the feeding block 4 drives the material upwards. The material is broken up by first actuating racks 43 arranged sequentially in the rotation direction of the drum 2. The racks are positioned between the lowest and highest points of the material-pulling block 4. The number of teeth on each set of first actuating racks 43 increases sequentially. The different number of teeth causes the gears to rotate after meshing with the racks, and the angle of rotation will also be different. Based on this, the amplitude of the bumps and vibrations of the material-pulling block 4 during its ascent gradually increases and then decreases, gradually increases and then decreases again, thus better breaking up the material. It also has a scattering effect on the material powder and "seed" particles, increasing the force of the particles impacting the material powder. The resulting fertilizer particles are more compact and, while providing a slow-release effect, are less prone to breakage.

[0046] Furthermore, the feeding block 4 is provided with a first screening chamber 44 and a second screening chamber 45. The first screening chamber 44 is connected to the inside of the drum 2. A screening screen 46 is provided between the first screening chamber 44 and the second screening chamber 45. A screening hole 47 is provided in the second screening chamber 45. The mesh size of the screening screen 46 is larger than the mesh size of the screening hole 47. A discharge hole 48 is also provided in the second screening chamber 45, which is connected to the outside of the drum 2. The feeding block 4's circumferential rotation stroke with the drum 2 includes: an ascending section, where the material entering the first screening chamber 44 passes through the screening screen 46 and is screened for the first time; when the actuating gear 42 meshes with each set of first actuating racks 43, the screening hole 47 is connected to the inside of the drum 2 for a second screening of the material; and a descending section, where the material in the first screening chamber 44 re-enters the inside of the drum 2, and the material in the second screening chamber 45 is discharged from the drum 2 through the discharge hole 48.

[0047] Specifically, in the aforementioned embodiment, the roller 2 is arranged at an angle to move the granules of the target particle size from the high end to the low end. During this process, unformed material powder, granules of the target particle size, and granules exceeding the target particle size will all move from the high end to the low end of the roller 2 along this path. Therefore, the unformed material powder must be re-fed into the roller 2, and the granules exceeding the target particle size will be crushed and re-fed into the roller 2. This increases the number of production steps for fertilizer granules and reduces the granulation efficiency of the roller 2.

[0048] Therefore, in this embodiment, based on the above-mentioned problems, a first screening chamber 44 and a second screening chamber 45 are provided on the feeding block 4. The first screening chamber 44 is connected to the inside of the roller 2, allowing material powder and particles to enter. A screening screen 46 is provided at the junction of the second screening chamber 45 and the first screening chamber 44. This screening screen 46 is used to filter particles that exceed the target particle size, and the filtered particles that exceed the target particle size will temporarily remain in the first screening chamber 44. Material powder and particles of the target particle size will enter the second screening chamber 45. The bottom surface 40 of the feeding block 4 corresponds to the second screening chamber. Part 45 has a screening hole 47, which is used to screen particles and powder of the target particle size. The powder leaks out and re-enters the drum 2, while the particles of the target particle size remain in the second screening chamber 45. This process corresponds to the rising section when the feeding block 4 moves from the lowest point to the highest point. The arrangement of multiple sets of first actuating racks 43 on the ring 34 corresponds to the rising section of the feeding block 4's stroke as it follows the drum 2. To prevent the opening of the communication path between the first screening chamber 44 and the inside of the drum 2 from facing downwards due to the feeding block 4 rotating with the drum 2, the second screening chamber 45 is positioned as follows: Particles of the target size within the screening chamber 45 may return to the first screening chamber 44 or even fall off. In an optional embodiment, the screening mesh 46 is slidably arranged within the feeding block 4, and a second elastic element is provided between the screening mesh 46 and the feeding block 4 in the sliding direction. Based on the elastic force of the second elastic element, the screening mesh 46 tends to be located at the junction of the first screening chamber 44 and the second screening chamber 45. Based on the oscillation action of the feeding block 4, the screening mesh 46 tends to move away from the second screening chamber 45. That is, a pressing rod 49 is also slidably arranged on the feeding block 4. One end of the 9 abuts against the wall of the drum 2, and the other end abuts against the screening screen 46. During the process of the feeding block 4 swinging towards the inside of the drum 2, the extrusion rod 49 is obstructed by the inner wall of the drum 2 and will move in the opposite direction to extrude the screening screen 46. Then the screening screen 46 will move away from the second screening chamber 45. The part of the screening screen 46 with mesh holes corresponds to the side wall of the first screening chamber 44 facing the inside of the drum 2, and the rest will block the part of the first screening chamber 44 that communicates with the inside of the drum 2. This can prevent particles of the target particle size from returning to the first screening chamber 44 and falling into the drum 2.

[0049] To ensure that the mesh portion of the screening screen 46 remains aligned with the sidewall of the first screening chamber 44 facing the inside of the drum 2 during the subsequent descent, and to prevent the remaining portion from blocking the connection between the first screening chamber 44 and the inside of the drum 2, a locking rod 50 is slidably provided on the feeding block 4, and a locking hole 51 is provided on the wall of the drum 2. In the ascending section, following multiple sets of first actuating racks 43, a second actuating rack 52 is also provided. The second actuating rack 52 has more teeth than any of the first actuating racks 43 with the most teeth in any set. That is, when the actuating gear 42 meshes with the second actuating rack 52 and rolls, because the screening screen 46 is already against the sidewall of the first screening chamber 44 facing the inside of the drum 2, it cannot further... Moving in this direction, the extrusion rod 49 will still be compressed. This is because the extrusion rod 49 is made of an elastic material and can undergo elastic deformation. That is, the extrusion causes the extrusion rod 49 to undergo elastic deformation, causing the part near the middle to arch up. A first extrusion block 491 is set in the middle part of the extrusion rod 49. The arching of the extrusion rod 49 causes the first extrusion block 491 to compress the locking rod 50. At this time, the position of the feeding block 4 is such that the locking rod 50 is just aligned with the locking hole 51. After the locking rod 50 is inserted into the locking hole 51, the swing of the feeding block 4 is restricted. As the feeding block 4 passes through the descending section, it gradually comes into an inverted state, and the particles of the target particle size can be discharged from the roller 2 through the discharge hole 48.

[0050] In this process, when the material-pushing block 4 is about to return to its lowest point, the position lock of the material-pushing block 4 needs to be released. Therefore, in an optional embodiment, the locking rod 50 is provided with a first pressing position 500 for the first pressing block 491 to press, and a second pressing block 493 is also arranged on the pressing rod 49. Correspondingly, the locking rod 50 is also provided with a second pressing position 501 for the second pressing block 493 to press. When the first pressing block 491 presses the first pressing position 500, the locking rod 50 is inserted into the locking hole 51. When the second pressing block 493 presses the second pressing position 501, the locking rod 50 presses the first pressing block 491 in the opposite direction and gradually disengages from the locking hole 51. That is, a first bending part 490 is provided on the pressing rod 49 at the position corresponding to the first pressing block 491, and a second bending part is provided at the position corresponding to the second pressing block 493. The opening of the first bend 490 is smaller than that of the second bend 492. However, when subjected to external force, the first bend 490 is more likely to bend than the second bend 492. Thus, when the second actuating rack 52 meshes with the actuating gear 42, the swing angle of the feeding block 4 continues to increase, and the extrusion rod 49 is subjected to extrusion again. This time, the first bend 490 will bend and drive the first extrusion block 491 to extrude the locking rod 50, so that the locking rod 50 is inserted into the locking hole 51. Although the locking rod 50 is slidably arranged on the feeding block 4, there is a certain friction. That is, when the locking rod 50 is inserted into the locking hole 51, the locking rod 50 is not subjected to external force and will not slide on the feeding block 4. In this way, the position of the feeding block 4 can be locked better, so that the target particle size particles can be discharged from the discharge hole 48 better.

[0051] When the material-pulling block 4 is about to return to the lowest point, the position lock of the material-pulling block 4 needs to be released. Therefore, a third actuating rack 53 is also provided near the lowest point. The number of teeth of the third actuating rack 53 is more than that of the second actuating rack 52. That is, after the third actuating rack 53 meshes with the actuating gear 42, the material-pulling block 4 will swing again, and the pressing rod 49 will be pressed again. At this time, the second bending part 492 bends, causing the second pressing block 493 to press the second pressing position 501 on the locking rod 50, so that the locking rod 50 is disengaged from the locking hole 51. After the third actuating rack 53 disengages from the actuating gear 42, the material-pulling block 4 will reset under the action of the rebound force of the first elastic element and start the next round of operation.

[0052] Preferably, the screening mesh 46 has a plurality of crisscrossing cutters 460 arranged on the side away from the second screening chamber 45. During the movement of the screening mesh 46 away from the second screening chamber 45, the plurality of cutters 460 cooperate with the cavity wall of the first screening chamber 44 to cut the material in the first screening chamber 44.

[0053] Specifically, multiple crisscrossing cutters 460 are arranged on the side of the screening mesh 46 away from the second screening chamber 45. As the screening mesh 46 moves away from the second screening chamber 45, it will crush particles that exceed the target particle size. Compared with simply using the mesh of the screening mesh 46 to crush particles, the cutters 460 are more effective at crushing particles that exceed the target particle size.

[0054] Preferably, the screening screen 46 is equipped with an extension section 461. When the actuating gear 42 is not engaged with the first actuating rack 43, the extension section 461 blocks the discharge hole 48. Specifically, when the actuating gear 42 is not engaged with the first actuating rack 43, it is the process of material entering the recessed structure. In order to prevent material powder from entering the discharge hole 48, the extension section 461 can be used to temporarily block the discharge hole 48. When the actuating gear 42 is engaged with the first actuating rack 43, the position of the discharge hole 48 is opposite to the screening hole 47, so there will be basically no material powder entering the discharge hole 48. The extension section 461 will also move with the screening screen 46 and will not block the discharge hole 48.

[0055] Another embodiment of the present invention also relates to a method for producing fertilizer for sugarcane cultivation, wherein the method for producing fertilizer for sugarcane cultivation using the aforementioned sugarcane cultivation fertilizer production device includes the following steps:

[0056] Step 1: Material filling. The feeding mechanism fills the material into the drum 2. The drum 2 is driven by the drive system 3 to rotate circumferentially. At the same time, the water spraying mechanism sprays atomized water to wet the material.

[0057] Step 2: Fertilizer forming. The moistened material rolls continuously under the action of gravity and friction. The fine powder of the moistened material collides and adheres to each other during the rolling, gradually forming granules. The granules gradually become denser during the process of repeated drops and rolling.

[0058] Step 3: Fertilizer grading. The formed fertilizer particles have different particle sizes, and the mixed material powder is carried into the first screening chamber 44 by the feeding block 4. Particles exceeding the target particle size remain in the first screening chamber 44, while particles and material powder that meet the target particle size enter the second screening chamber 45 for secondary screening. In the ascending section, particles of the target particle size are retained in the second screening chamber 45, while material powder re-enters the drum 2, and the fertilizer particles in the first screening chamber 44 are broken. In the descending section, fertilizer particles of the target particle size are discharged from the discharge hole 48, and the broken fertilizer particles re-enter the drum 2.

[0059] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A fertilizer production device for sugarcane planting, comprising a base and a roller arranged on the base, the roller being driven by a drive system to rotate circumferentially, and a feeding mechanism and a water spraying mechanism being respectively arranged at both ends of the roller's axial direction; during operation, the material rolls inside the roller and gradually forms fertilizer granules, characterized in that... Several material-pushing blocks are arranged sequentially along the circumference of the inner wall of the drum. The material-pushing blocks protrude from the inner wall of the drum. During the circumferential rotation of the drum, the material-pushing blocks extend the rising distance of the material.

2. The fertilizer production apparatus for sugarcane planting according to claim 1, characterized in that, Both ends of the roller are rotatably mounted with rings. One end of the ring is hinged to the base, and the other end of the ring swings on the base with the hinge as the swing axis.

3. The fertilizer production apparatus for sugarcane planting according to claim 2, characterized in that, The drive system includes a geared motor mounted on the base and a geared ring mounted on the other end of the drum via a screw. A drive gear is installed at the power output end of the geared motor, and the drive gear meshes with the geared ring. The eccentricity of the geared ring is adjusted by rotating the screw.

4. The fertilizer production apparatus for sugarcane planting according to claim 2, characterized in that, The material-pushing block is oscillating on the inner wall of the drum, and a first elastic element is provided between the material-pushing block and the inner wall of the drum. A swivel shaft end of the material-pushing block is equipped with a swivel gear, and multiple sets of first swivel racks are installed on the ring body. Along the rotation direction of the drum, the number of teeth of each set of first swivel racks increases sequentially.

5. The fertilizer production apparatus for sugarcane planting according to claim 4, characterized in that, The feeding block has a first screening chamber and a second screening chamber. The first screening chamber is connected to the inside of the drum. A screening screen is provided between the first screening chamber and the second screening chamber. Screening holes are provided in the second screening chamber. The mesh size of the screening screen is larger than the size of the screening holes. A discharge hole is also provided in the second screening chamber, which is connected to the outside of the drum. The feeding block's circumferential rotation stroke with the drum includes: In the rising section, the material entering the first screening chamber passes through the screening screen and is screened for the first time. When the actuating gear meshes with each set of first actuating racks, the screening holes connect to the inside of the drum, and the material is screened for the second time. In the descending section, the material in the first screening chamber re-enters the inside of the drum, while the material in the second screening chamber is discharged from the drum through the discharge hole.

6. The fertilizer production apparatus for sugarcane planting according to claim 5, characterized in that, The arrangement of multiple sets of the first actuating racks on the ring corresponds to the rising section of the material feeding block's stroke as it follows the rotation of the roller.

7. The fertilizer production apparatus for sugarcane planting according to claim 5, characterized in that, The screening mesh is slidably arranged within the feeding block, and a second elastic element is provided between the screening mesh and the feeding block in the sliding direction. Based on the elastic force of the second elastic element, the screening mesh tends to be located at the junction of the first screening chamber and the second screening chamber. Based on the oscillation action of the feeding block, the screening mesh tends to move away from the second screening chamber.

8. The fertilizer production apparatus for sugarcane planting according to claim 7, characterized in that, The screening mesh has multiple crisscrossing cutters arranged on the side away from the second screening chamber. As the screening mesh moves away from the second screening chamber, the multiple cutters work with the cavity wall of the first screening chamber to cut the material inside the first screening chamber.

9. The fertilizer production apparatus for sugarcane planting according to claim 7, characterized in that, An extension section is installed on the screening screen. When the actuating gear does not mesh with the first actuating rack, the extension section blocks the discharge hole.

10. A method for producing fertilizer for sugarcane cultivation, based on the fertilizer production apparatus for sugarcane cultivation according to any one of claims 1-9, characterized in that, The method for producing fertilizer for sugarcane cultivation includes the following steps: Material filling: The feeding mechanism fills the material into the drum, which is driven by the drive system to rotate circumferentially. At the same time, the water spraying mechanism sprays atomized water to wet the material. In fertilizer forming, the moistened material tumbles continuously under the action of gravity and friction. The fine powder of the moistened material collides and adheres to each other during the rolling process, gradually forming granules. The granules gradually become denser during the process of repeated drops and rolling. Fertilizer grading involves the formation of fertilizer granules of varying sizes, along with a mixture of powdered materials. These granules are then fed into the first screening chamber by a feeding block. Particles exceeding the target size remain in the first screening chamber, while granules meeting the target size and the powdered materials enter the second screening chamber for secondary sieving. In the ascending section, particles of the target size remain in the second screening chamber, while the powdered materials re-enter the drum, and the fertilizer granules in the first screening chamber are broken. In the descending section, fertilizer granules of the target size are discharged from the outlet, and the broken fertilizer granules re-enter the drum.

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