Dry granule distribution platform and granule drying machine

Abstract

The utility model relates to the technical field of ceramic tile production equipment, and discloses a dry granule distribution platform and a dry granule machine, the dry granule distribution platform comprises a platform support, a driving roller, a driven distribution roller, a feeding belt and a distribution driving mechanism, the diameter of the driven distribution roller is smaller than that of the driving roller, and the driven distribution roller is located at the downstream of the driving roller; the platform support is provided with a straightening structure located behind the driven material distribution roller, and the straightening structure is used for maintaining the straightness of the driven material distribution roller. The straightness of the small-diameter driven material distribution roller is maintained by arranging the straightening structure, the consistent tightness of the feeding belt in the operation process is guaranteed, the speed difference of dry particles caused by different tightness degrees of the feeding belt is avoided, the problem that the dry particles are not uniformly distributed on the feeding belt is solved from the source, and the production efficiency is improved. The distance between each point on the surface of the driven material distribution roller and the feeding belt is kept consistent, so that the dry particles are uniformly extruded and pushed when passing through the material distribution roller, and the material distribution uniformity is further improved.

Description

Technical Field

[0001] This utility model relates to the field of ceramic tile production equipment technology, and in particular to a dry granulation feeding platform and a dry granulation machine. Background Technology

[0002] In order to create a variety of unique patterns, textures and finishes for tiles, a wide variety of colors and patterns are available for tile products. Typically, a dry granulation machine is used to evenly spread dry granules of different colors, sizes and materials on the tile body.

[0003] However, existing feed rollers are generally quite large (i.e., with a large diameter). The large diameter of the driven feed roller results in a larger contact area and a larger wrap angle with the feed belt. This causes the dry particles on the belt to be relatively dispersed in their constraint as they pass over the driven feed roller. The dry particles are prone to uneven distribution over this large contact area, making it difficult to achieve high-precision, uniform feeding in subsequent processes.

[0004] If the diameter of the fabric roller is reduced, the slender roller will easily bend and deform during the dry granule distribution process due to the combined forces of tension from the feed belt, the gravity of the dry granules, and friction. This bending and deformation results in uneven contact between the fabric roller and the feed belt, causing inconsistent belt tension during operation. Consequently, the dry granules on the feed belt will exhibit speed differences due to varying belt tension, leading to uneven distribution and ultimately uneven fabric distribution. Furthermore, the bending of the fabric roller alters the distance between its surface and the belt, causing uneven compression and pushing forces on the dry granules as they pass over the roller, further exacerbating the unevenness of the fabric distribution.

[0005] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a dry granulation platform and a dry granulator, which aims to solve the technical problem that small-diameter driven granulation rollers are prone to bending and deformation under stress during operation.

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

[0008] A dry pellet fabric platform includes a platform support, an active roller and a driven fabric roller rotatably extended laterally on the platform support, a feed belt wound around the active roller and the driven fabric roller, and a fabric drive mechanism for driving the active roller to rotate. The driven fabric roller has a smaller diameter than the active roller and is located downstream of the active roller. The platform support is provided with a straightening structure located behind the driven fabric roller, the straightening structure being used to maintain the straightness of the driven fabric roller.

[0009] As a further improvement to the above technical solution, the straightening structure includes a bracket and two straightening wheels that press against the circumferential surface of the driven fabric roller.

[0010] As a further improvement to the above technical solution, the bracket includes a back plate and a convex plate disposed in the middle of the back plate. The back plate and the convex plate form a T-shaped structure, and the two straightening wheels are respectively disposed on the left and right sides of the convex plate.

[0011] As a further improvement to the above technical solution, the back plate is provided with at least two mounting holes, and each mounting hole is fitted with a corresponding fixing screw to connect to the crossbeam of the platform support; the back plate is provided with at least one threaded hole, and each threaded hole is fitted with a tightening adjustment screw facing the crossbeam of the platform support.

[0012] As a further improvement to the above technical solution, the platform support is provided with two baffles located on both sides of the feeding belt, and baffle strips are installed on the baffles, which press against the edge of the feeding belt.

[0013] As a further improvement to the above technical solution, the diameter of the driven fabric roller is 25mm-60mm.

[0014] As a further improvement to the above technical solution, a horizontally extending uniform filament is provided on the side of the driven fabric roller, and a screen is provided below the driven fabric roller.

[0015] A dry pellet mill is also provided, including a frame, a dry pellet feeding platform, a feeding hopper mounted above the dry pellet feeding platform, a feeding mechanism for feeding the feeding hopper, and a return mechanism.

[0016] As a further improvement to the above technical solution, the feeding mechanism includes a storage mechanism, a vertically extending box, a track vertically arranged inside the box, a feeding hopper assembly that can be raised and lowered along the track, a lifting drive mechanism for pulling the feeding hopper assembly up and down, and a reciprocating material leveling mechanism arranged on the top of the feeding hopper. A material dropping channel is provided on the high side of the box, and the material dropping channel is connected to the reciprocating material leveling mechanism through a flexible pipe. The storage mechanism is used to supply material to the feeding hopper assembly, and the feeding hopper assembly puts dry granules into the material dropping channel.

[0017] As a further improvement to the above technical solution, the material return mechanism includes a first belt material return platform and a second belt material return platform connected in sequence. The first belt material return platform is located below the driven fabric roller and the material return direction extends laterally. The second belt material return platform extends longitudinally and returns material to the storage mechanism.

[0018] The beneficial effects of this invention are as follows: By setting the diameter of the driven feeding roller to be smaller than that of the driving roller, the contact area and wrap angle between the driven feeding roller and the feeding belt are reduced. Combined with the straightening structure maintaining the straightness of the driven feeding roller, the dry particles on the belt are more concentratedly constrained when passing through the driven feeding roller, effectively improving the problem of uneven distribution of dry particles over a large contact area, thus achieving high-precision uniform feeding. The straightening structure also maintains the straightness of the driven feeding roller, ensuring consistent tension of the feeding belt during operation and avoiding speed differences in dry particles due to varying belt tension. This solves the problem of uneven distribution of dry particles on the feeding belt from the source and ensures that the distance between each point on the surface of the driven feeding roller and the feeding belt remains consistent, allowing the dry particles to experience uniform compression and pushing forces when passing through the feeding roller, further improving the uniformity of the feeding.

[0019] The dry pellet mill includes the aforementioned dry pellet feeding platform, a feeding hopper mounted on top of the dry pellet feeding platform, a feeding mechanism for feeding the feeding hopper, and a return mechanism, possessing all the advantages of the dry pellet feeding platform. Attached Figure Description

[0020] Figure 1 A perspective view of the dry granule fabric platform provided by this utility model.

[0021] Figure 2 This is a perspective view of the dry granule fabric platform provided by this utility model, with the feeding belt hidden in the figure.

[0022] Figure 3 for Figure 2 A magnified view of region A in the middle.

[0023] Figure 4 This is a schematic diagram showing the effect of the straightening structure on the fabric rollers from the east.

[0024] Figure 5 For the three-dimensional dry pellet mill Figure 1 .

[0025] Figure 6 For the three-dimensional dry pellet mill Figure 2 .

[0026] Explanation of main component symbols: 1-Dry pellet feeding platform, 11-Platform support, 21-Driven roller, 22-Driven feeding roller, 23-Feeding belt, 24-Equalizing wire, 25-Screw, 3-Feeding drive mechanism, 4-Straightening structure, 41-Bracket, 411-Back plate, 412-Protruding plate, 42-Straightening wheel, 43-Tightening adjusting screw, 44-Fixing screw, 51-Baffle plate, 52-Baffle strip, 6-Feeding hopper, 7-Feeding mechanism, 71-Storage mechanism, 72-Box, 73-Lifting drive mechanism, 74-Reciprocating equalizing mechanism, 75-Discharge channel, 76-Flexible pipe, 8-Return mechanism, 81-First belt return platform, 82-Second belt return platform, 9-Frame. Detailed Implementation

[0027] This utility model provides a dry granulation fabric platform and a granulator. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit the scope of protection of this utility model.

[0028] Please see Figures 1 to 4 This utility model provides a dry pellet fabric platform 1, including a platform support 11, an active roller 21 and a driven fabric roller 22 rotatably extended laterally on the platform support 11, a feed belt 23 wound around the active roller 21 and the driven fabric roller 22, and a fabric driving mechanism 3 for driving the active roller 21 to rotate. The diameter of the driven fabric roller 22 is smaller than that of the active roller 21 and it is located downstream of the active roller 21. The platform support 11 is provided with a straightening structure 4 located behind the driven fabric roller 22. The straightening structure 4 is used to maintain the straightness of the driven fabric roller 22.

[0029] When the dry granule fabric is in operation, the fabric drive mechanism 3 outputs power to drive the drive roller 21 to rotate. The fabric drive mechanism 3 can be equipped with a geared motor, which is connected to the drive roller 21. Since the feed belt 23 is wrapped around the drive roller 21 and the driven fabric roller 22, the continuous rotation of the drive roller 21 drives the feed belt 23 to circulate through friction.

[0030] Dry pellets fall from the feed hopper 6 onto the rotating feed belt 23. As the feed belt 23 moves, the dry pellets are conveyed towards the driven feed roller 22. During this process, the feed belt 23 exerts a pulling force on the driven feed roller 22, causing the driven feed roller 22 to rotate synchronously. At the same time, due to the relative motion between the feed belt 23 and the dry pellets, friction is generated between them. Combined with the weight of the dry pellets themselves, this allows the dry pellets to adhere firmly to the feed belt 23 and move forward synchronously.

[0031] When the feed belt 23 carries the dry granules to the driven placing roller 22, the dry granules move around the driven placing roller 22 and, under the combined action of gravity and the feed belt 23, fall onto the brick blank below. During this process, due to the combined effect of various forces such as the weight of the dry granules, the tension of the feed belt 23, and the friction between the two, the driven placing roller 22 is prone to bending and deformation. The straightening structure 4 located behind the driven placing roller 22 provides support for the driven placing roller 22 in real time, maintaining its straightness. This not only ensures that the driven placing roller 22 and the feed belt 23 maintain stable and uniform contact at all times, but also ensures the stability of the feed belt 23 during operation, allowing the dry granules to fall steadily onto the brick blank surface, achieving precise laying of the dry granules.

[0032] This invention reduces the contact area and wrap angle between the driven fabric roller 22 and the feed belt 23 by setting the diameter of the driven fabric roller 22 to be smaller than that of the driving roller 21. Combined with the straightening structure 4 maintaining the straightness of the driven fabric roller 22, the dry particles on the belt are more concentratedly constrained when passing through the driven fabric roller 22, effectively improving the problem of uneven distribution of dry particles over a large contact area, thus achieving high-precision uniform fabric distribution. The straightening structure 4 also maintains the straightness of the driven fabric roller 22, ensuring consistent tension of the feed belt 23 during operation, avoiding speed differences in dry particles due to varying tension of the feed belt 23. This solves the problem of uneven distribution of dry particles on the feed belt 23 from the source, and also ensures that the distance between each point on the surface of the driven fabric roller 22 and the feed belt 23 remains consistent, allowing the dry particles to experience uniform compression and pushing forces when passing through the fabric roller, further improving the uniformity of the fabric distribution.

[0033] Specifically, the straightening structure 4 includes a bracket 41 and two straightening wheels 42 that press against the circumference of the driven fabric roller 22. The two straightening wheels 42 can work together to stably apply force to the driven fabric roller 22. In a preferred embodiment, the two straightening wheels 42 are arranged in a staggered manner, so that the two straightening wheels 42 and the bracket 41 form a stable triangular support system, applying force to the driven fabric roller 22 from multiple directions. This can promptly and accurately correct the minor deformation of the driven fabric roller 22 caused by force during the dry granule fabric application process. Compared with the conventional single support structure, this greatly improves the effect of maintaining the straightness of the driven fabric roller 22 and ensures the stability of the fabric.

[0034] This structure effectively disperses the tension of the feed belt 23, the weight of the dry particles, and the friction force borne by the driven fabric roller 22 during operation, thereby reducing the stress on a single support point. Compared to traditional single-point support, the triangular support system has higher stability, ensuring that the driven fabric roller 22 maintains good straightness under various complex working conditions, greatly improving the overall stability and reliability of the equipment.

[0035] In addition, the straightening roller 42 rolls in contact with the driven fabric roller 22, greatly reducing the wear between them. Meanwhile, the bracket 41 and the straightening roller 42 have simple structures, are easy to install and disassemble, and facilitate maintenance and component replacement.

[0036] In this embodiment, the straightening structure 4 is provided in three sets, respectively arranged at the left end, middle and right end of the driven fabric roller 22. By setting the straightening structure at three key positions, the driven fabric roller can be supported and straightened at multiple points, effectively resisting various external forces on the fabric roller during operation, reducing the possibility of bending deformation, maintaining its straightness, and thus ensuring the uniformity and stability of the fabric.

[0037] It should be noted that the straightening structure is not limited to wheel-shaped structures such as straightening wheels. In other embodiments, it can also be a straightening roller, an arc-shaped top plate, or other straightening structures. These equivalent variations or substitutions are all included within the scope defined by the claims of this invention.

[0038] Specifically, the bracket 41 includes a back plate 411 and a convex plate 412 disposed in the middle of the back plate 411. The back plate 411 and the convex plate 412 form a T-shaped structure, and the two straightening wheels 42 are respectively disposed on the left and right sides of the convex plate 412. The T-shaped bracket 41, composed of the back plate 411 and the convex plate 412, provides more stable support for the driven fabric roller 22. The T-shaped back plate 411 increases the contact area with the mounting surface, ensuring that the bracket 41 will not easily shift due to force during operation. The convex plate 412 supports the driven fabric roller 22 in the middle, and together with the straightening wheels 42 on the left and right sides, the three points form a stable support surface, further improving the effect of maintaining the straightness of the driven fabric roller 22. The convex plate 412 of the T-shaped bracket 41 distributes the pressure of the driven fabric roller 22 to the back plate 411, avoiding local stress concentration. The straightening rollers 42 on both sides are symmetrically arranged on the left and right sides of the convex plate 412, so that the resistance pressure on the driven fabric roller 22 is evenly distributed.

[0039] Furthermore, the back plate 411 is provided with at least two mounting holes, each of which is fitted with a corresponding fixing screw 44 to connect to the crossbeam of the platform support 11; the back plate 411 is provided with at least one threaded hole, each of which is fitted with a tightening adjusting screw 43 facing the crossbeam of the platform support 11. During the installation and commissioning phase of new equipment, or when put back into use after maintenance, the tightening adjusting screw 43 allows the commissioning personnel to quickly and accurately adjust the pressure of the straightening roller 42 and optimize the matching state between the driven fabric roller 22 and the feed belt 23.

[0040] It is understandable that when producing dry-particle fabric, different dry-particle characteristics, such as particle size and density, as well as different stages of fabric production, will result in different pressure requirements for the straightening roller 42 acting on the driven fabric roller 22. By tightening the adjusting screw 43, the position of the bracket 41 can be finely adjusted, thereby precisely changing the pressure of the straightening roller 42 on the driven fabric roller 22.

[0041] During the conveying of dry granules by the feeding belt 23, the dry granules are prone to spilling from both sides of the belt due to factors such as belt operation and vibration during the feeding process. To address this, the platform support 11 is equipped with two baffle plates 51 located on both sides of the feeding belt 23. The baffle plates 51 are fitted with baffle strips 52, which press against the edges of the feeding belt 23 to reduce belt edge swaying and prevent the dry granules from detaching due to belt swaying. This effectively avoids spillage of dry granules, reduces material waste, and also reduces pollution to the working environment caused by spillage, thus lowering cleaning costs.

[0042] The diameter of the driven feeding roller 22 is preferably 25mm-60mm. A smaller diameter driven feeding roller 22 significantly reduces the contact area and wrap angle with the feeding belt 23. This allows the dry particles to be more concentratedly constrained as they pass through the driven feeding roller 22, effectively avoiding uneven distribution of dry particles on a larger contact surface. This ensures uniform distribution of dry particles on the feeding belt 23 from the source, laying a solid foundation for subsequent uniform feeding and improving the quality of dry particle laying on the brick surface. In this embodiment, the diameter of the driven feeding roller 22 is 40mm, with a small wrap angle. Even with a small wrap angle, the 40mm diameter driven feeding roller 22 can still meet the transmission torque requirements.

[0043] Preferably, the driven feeding roller 22 is provided with laterally extending uniform distribution filaments 24. These filaments extend laterally beside the driven feeding roller 22, and when the feeding belt 23 carries the dry particles past the driven feeding roller 22, the uniform distribution filaments 24 can perform secondary combing of the dry particles. This can break up any clumps or accumulations formed during the conveying process, allowing the dry particles to be more evenly distributed on the belt. Combined with the initial constraint of the small-diameter driven feeding roller 22 on the dry particles, this greatly improves the dispersion of the dry particles, ensuring uniform distribution of dry particles on the surface of the brick blank, and improving the appearance quality and consistency of the product.

[0044] During the dry granule spreading process, impurities may be mixed into the raw materials, affecting product quality. Therefore, a screen 25 is provided below the driven spreading roller 22 to screen the falling dry granules. This intercepts excessively large impurities and foreign objects, allowing only qualified dry granules to pass through and be laid on the brick blank, reducing product defects caused by impurities and improving the yield rate.

[0045] Please see Figure 5 and Figure 6This utility model also provides a dry granulator, including a frame 9, a dry granule distribution platform 1 mounted on the frame 9, a hopper 6 mounted above the dry granule distribution platform 1, a feeding mechanism 7 for feeding the hopper 6, and a return mechanism 8. The feeding mechanism 7 is activated to continuously convey dry granules to the hopper 6. During the feeding process, the feeding mechanism 7 can flexibly adjust the feeding rhythm according to the distribution speed and production needs to ensure that a certain amount of dry granules is maintained in the hopper 6, providing a guarantee for the continuity of subsequent distribution operations. According to the operating rhythm of the dry granule distribution platform 1, the outlet of the hopper 6 evenly distributes the dry granules onto the operating feed belt 23. The feed belt 23 drives the dry granules to move, passing sequentially through the equalizing wire 24 and the driven distribution roller 22. Subsequently, the feed belt 23 drives the dry granules to circle around the driven distribution roller 22, and under the combined action of gravity and the belt, the dry granules fall onto the brick blank below.

[0046] During the laying process, dry particles that fail to be successfully laid on the brick blanks are collected by the return mechanism 8. The return mechanism 8 sends the collected dry particles back to the feeding stage, realizing the recycling of dry particles.

[0047] Specifically, the feeding mechanism 7 includes a storage mechanism 71, a vertically extending box 72, a track vertically arranged inside the box 72, a feeding hopper assembly that can be raised and lowered along the track, a lifting drive mechanism 73 for pulling the feeding hopper assembly up and down, and a reciprocating material leveling mechanism 74 arranged on the top of the feeding hopper 6. A dropping channel 75 is provided on the high side of the box 72. The dropping channel 75 is connected to the reciprocating material leveling mechanism 74 through a flexible pipe 76. The storage mechanism 71 is used to supply material to the feeding hopper assembly, and the feeding hopper assembly puts dry granules into the dropping channel 75.

[0048] During feeding, the storage mechanism 71 conveys dry granules to the feeding hopper assembly. The feeding hopper assembly is lifted and lowered along a track inside the housing 72 by a lifting drive mechanism 73. Upon receiving dry granules from the storage mechanism 71, the lifting drive mechanism 73 activates, pulling the feeding hopper assembly rapidly up the track to the highest position of the housing 72. Once at the feeding position, the feeding hopper assembly releases the dry granules into the discharge channel 75. The dry granules pass through the discharge channel 75 and then through the flexible pipe 76 into the reciprocating leveling mechanism 74 at the top of the distribution hopper 6. The reciprocating leveling mechanism 74, through its back-and-forth motion, further leveles the dry granules, distributing them evenly throughout the distribution hopper 6.

[0049] After being processed by the reciprocating material distribution mechanism 74, the dry granules enter the distribution hopper 6. According to the operating rhythm of the dry granule distribution platform 1, the distribution hopper 6 evenly distributes the dry granules onto the feeding belt 23, realizing precise feeding of dry granules to the dry granule distribution platform 1 and continuously providing raw materials for the dry granule laying operation.

[0050] A reciprocating material distribution mechanism 74 is located at the top of the feeding hopper 6 to perform secondary material distribution on the dry granules fed through the discharge channel 75. This mechanism, through its reciprocating motion, breaks up any clumps and accumulations of dry granules formed during transport, distributing them evenly throughout the feeding hopper 6 and preventing localized accumulation. This not only ensures precise control of the amount of dry granules fed into the feeding hopper 6 but also guarantees the uniform distribution of dry granules on the dry granule distribution platform 1, thereby improving product quality stability from the source.

[0051] The reciprocating material leveling mechanism 74 specifically includes a slide that can move laterally, a synchronous belt for driving the slide to move laterally reciprocally, and the slide is fixedly connected to the lower end of the flexible pipe 76.

[0052] The feeding hopper assembly specifically includes a lifting frame slidably connected to a track and a feeding hopper tilting and connected to the lifting frame. The feeding hopper is equipped with a tilting fulcrum wheel, and the housing 72 contains a limiting angle plate that cooperates with the tilting fulcrum wheel. When the lifting drive mechanism 73 pulls the lifting frame and feeding hopper upwards, the tilting fulcrum wheel hits the limiting angle plate, causing the feeding hopper to tilt, thus pouring the dry particles inside into the discharge channel 75. The lifting drive mechanism 73 can specifically use a chain and a motor for traction.

[0053] Understandably, the hopper assembly operates entirely within a relatively enclosed enclosure 72 when it is between the storage mechanism 71 and the discharge channel 75. This design effectively reduces the contact between dry particles and outside air, preventing dust generation caused by airflow disturbances. Compared to open feeding systems, this reduces the likelihood of dust generation during the conveying process, thus minimizing dust pollution at its source.

[0054] Specifically, the return material mechanism 8 includes a first belt return platform 81 and a second belt return platform 82 connected in sequence. The first belt return platform 81 is located below the driven feeding roller 22 and extends laterally in the return direction; the second belt return platform 82 extends longitudinally in the return direction and returns material to the storage mechanism 71. The first belt return platform 81 is arranged laterally below the driven feeding roller 22, which can quickly receive dry particles that fall from the feeding belt 23 and fail to be laid on the brick blank, avoiding the accumulation of dry particles. Then, the dry particles are efficiently transferred to the longitudinally extending second belt return platform 82, which directly sends the dry particles back to the storage mechanism 71, forming a simple and efficient return closed loop. This rationally planned return path significantly shortens the dry particle recycling cycle. Combined with the efficient operation of the feeding mechanism 7, it ensures a continuous and stable supply of material to the dry particle machine, effectively improving production efficiency.

[0055] The storage mechanism 71 includes a storage hopper, a filter screen installed at the inlet of the storage hopper, and a discharge valve installed at the outlet of the storage hopper. When the discharge valve is opened, the dry particles in the storage hopper will be discharged into the feeding hopper.

[0056] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0057] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0058] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A dry grain distribution platform, characterized by, The device includes a platform support, a drive roller and a driven fabric roller rotatably extended laterally on the platform support, a feed belt wound around the drive roller and the driven fabric roller, and a fabric drive mechanism for driving the drive roller to rotate. The driven fabric roller has a smaller diameter than the drive roller and is located downstream of the drive roller. The platform support is provided with a straightening structure located behind the driven fabric roller, which is used to maintain the straightness of the driven fabric roller.

2. The dry seed distribution platform of claim 1, wherein, The straightening structure includes a bracket and two straightening rollers that press against the circumferential surface of the driven fabric roller.

3. The dry pellet fabric platform according to claim 2, characterized in that, The bracket includes a back plate and a convex plate disposed in the middle of the back plate. The back plate and the convex plate form a T-shaped structure, and the two straightening wheels are respectively disposed on the left and right sides of the convex plate.

4. The dry seed dispensing platform of claim 3, wherein, The back plate is provided with at least two mounting holes, and each mounting hole is fitted with a corresponding fixing screw to connect to the crossbeam of the platform support; the back plate is provided with at least one threaded hole, and each threaded hole is fitted with a tightening adjustment screw facing the crossbeam of the platform support.

5. The dry seed dispensing platform of claim 1, wherein, The platform support is equipped with two baffles located on both sides of the feeding belt. The baffles are fitted with baffle strips that press against the edge of the feeding belt.

6. The dry seed dispensing platform of claim 1, wherein, The diameter of the driven fabric roller is 25mm-60mm.

7. The dry seed dispensing platform of claim 1, wherein, The driven fabric roller has laterally extending uniform filaments on its side, and a screen is provided below the driven fabric roller.

8. A grain dryer characterised by, It includes a frame, a dry pellet feeding platform as described in any one of claims 1-7, a feeding hopper mounted above the dry pellet feeding platform, a feeding mechanism for feeding the feeding hopper, and a return mechanism.

9. The grain dryer of claim 8, wherein, The feeding mechanism includes a storage mechanism, a vertically extending box, a track vertically arranged inside the box, a feeding hopper assembly that can be raised and lowered along the track, a lifting drive mechanism for pulling the feeding hopper assembly up and down, and a reciprocating material leveling mechanism arranged on the top of the feeding hopper. A material dropping channel is provided on the high side of the box, and the material dropping channel is connected to the reciprocating material leveling mechanism through a flexible pipe. The storage mechanism is used to supply material to the feeding hopper assembly, and the feeding hopper assembly puts dry granules into the material dropping channel.

10. The grain dryer of claim 9, wherein, The material return mechanism includes a first belt material return platform and a second belt material return platform connected in sequence. The first belt material return platform is located below the driven fabric roller and extends laterally in the material return direction. The second belt material return platform extends longitudinally in the material return direction and returns material to the storage mechanism.

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