Device for preparing biomass fuel particles by using rice husks

Abstract

The invention discloses a device for preparing biomass fuel particles by using rice hulls, and relates to the technical field of biomass fuel manufacturing equipment.The device is technically characterized by comprising a machining table, rotating supporting rods are symmetrically installed at the top of the machining table, and a rice hull barrel fixing ring is rotationally connected to the rotating supporting rods through angle adjusting rods; a rice hull containing barrel is fixedly installed on the inner circle face of the rice hull barrel fixing ring, evenly-distributed heating wires are fixedly installed in the rice hull containing barrel, a stirring and smashing mechanism is arranged on the rice hull containing barrel, and the stirring and smashing mechanism comprises a heat insulation protection shell movably penetrating through the rice hull containing barrel. A plurality of single machines and a transfer link are omitted, the occupied area is reduced, and the cost and the energy consumption are reduced; meanwhile, multiple functions of stirring, crushing, extrusion granulation and barrel wall cleaning are realized through a double-blade structure which can be split and combined, the structure is simplified, and the procedure connection and rice hull resource utilization efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of biomass fuel production equipment technology, specifically to a device for preparing biomass fuel pellets using rice husks. Background Technology

[0002] In the production process of biomass fuel pellets using agricultural and forestry waste such as rice husks, the raw materials usually need to undergo multiple processes such as drying, crushing, mixing, and extrusion molding. There are many processes and the equipment has high functional requirements.

[0003] Currently, traditional pelleting production lines mostly use a combination of multiple single machines to complete the above processes. This requires separate configuration of drying equipment, crushing equipment, mixing equipment, and extrusion molding equipment. Not only is the process cumbersome and there are many material transfer links, but the overall equipment occupies a large area, the supporting facilities are complex, and the initial investment and operating costs are high. At the same time, the coordinated operation of multiple equipment can also easily lead to problems such as high energy consumption and large material loss, which is not conducive to the efficient resource utilization of rice husk raw materials. Therefore, we propose a new device for preparing biomass fuel pellets using rice husks. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an apparatus for preparing biomass fuel pellets using rice husks, which effectively solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an apparatus for preparing biomass fuel pellets using rice husks, comprising a processing table, a rotating support rod symmetrically mounted on the top of the processing table, a rice husk barrel fixing ring rotatably connected to the rotating support rod via an angle adjustment rod, a rice husk placing barrel fixedly mounted on the inner circular surface of the rice husk barrel fixing ring, a uniformly distributed heating wire fixedly mounted inside the rice husk placing barrel, and a stirring and crushing mechanism provided on the rice husk placing barrel.

[0006] The mixing and pulverizing mechanism includes a heat-insulating protective shell that movably penetrates the rice husk placing barrel. An electric telescopic rod is fixedly installed inside the heat-insulating protective shell. The output end of the electric telescopic rod penetrates the heat-insulating protective shell and is fixedly installed with a front mixing and pulverizing blade. A rear mixing and pulverizing blade is fixedly installed at one end of the heat-insulating protective shell inside the rice husk placing barrel. The front and rear mixing and pulverizing blades are joined together to form an integral disc-shaped pressure plate structure. The mating surfaces of the front and rear mixing and pulverizing blades are cutting edges. The blade ends of the front and rear mixing and pulverizing blades contact and engage with the inner wall of the rice husk placing barrel. The outer diameter of the front and rear mixing and pulverizing blades is the same as the inner diameter of the rice husk placing barrel. The front and rear mixing and pulverizing blades can rotate relative to the rice husk placing barrel without causing motion interference. The mixing and pulverizing mechanism also includes a moving component located at the end of the rice husk placing barrel.

[0007] Preferably, the moving component includes a moving motor fixedly installed at the end of the rice husk placing bucket, a ball screw fixedly installed at the output end of the moving motor, a linkage plate adapted to the ball screw being threadedly connected to the ball screw, a crushing and stirring motor fixedly installed on the linkage plate, and the output end of the crushing and stirring motor being fixedly connected to the end of the heat-insulating protective shell away from the rice husk placing bucket.

[0008] Preferably, the moving component further includes a guide rod fixedly installed at the end of the rice husk placing bucket, the guide rod being slidably connected to the linkage plate, and an anti-detachment plate being fixedly installed at the end of the guide rod away from the rice husk placing bucket, the anti-detachment plate being rotatably connected to the end of the ball screw away from the moving motor.

[0009] Preferably, a bearing is embedded at the penetration point between the heat-insulating protective shell and the rice husk placing bucket, wherein the bearing is adapted to the heat-insulating protective shell, and the heat-insulating protective shell can extend, retract, and rotate along the inner ring of the bearing.

[0010] Preferably, the top of the rice husk storage bucket is symmetrically provided with feeding ports, and each feeding port is detachably connected to a feeding cover by bolts.

[0011] Preferably, a forming plate is fixedly installed at the other end of the rice husk placing barrel. The forming plate has several forming holes for rice husk extrusion. A cutting blade is rotatably connected to the forming plate. A driven wheel is fixedly installed on the cutting blade. A forming motor is fixedly installed on the outside of the rice husk placing barrel through a motor frame. A driving wheel is fixedly installed at the output end of the forming motor. The driving wheel and the driven wheel are connected by a transmission belt.

[0012] Preferably, a driven gear is fixedly installed on the angle adjusting rod, an angle adjusting motor is fixedly installed on the rotating support rod, and a driving gear is fixedly installed at the output end of the angle adjusting motor, with the driving gear meshing with the driven gear.

[0013] Preferably, the processing table has a feeding port on its surface, and a support frame is fixedly installed on the top of the processing table, with the supporting end of the support frame abutting against the outer wall of the rice husk storage bucket.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention integrates the drying, crushing, mixing, and extrusion molding processes into a rice husk storage tank and supporting mechanism, eliminating the need for multiple single machines and material transfer links, significantly reducing the equipment footprint, lowering initial investment and operating costs, while reducing energy consumption and material loss from multi-equipment collaboration, and improving the efficiency of rice husk resource utilization.

[0015] 2. This invention features a front stirring and pulverizing blade and a rear stirring and pulverizing blade that can be separated and combined. When separated, they can work together to complete the stirring, drying, and high-speed pulverizing of rice husks. When combined, they form a disc pressing plate that can compress rice husks into granules. The pressing plate is compatible with the inner diameter of the rice husk placing bucket and can also move along the bucket wall to clean impurities from the inner wall. One blade achieves multiple functions, simplifies the equipment structure, and improves process connection and overall work efficiency. Attached Figure Description

[0016] Figure 1 This is a complete structural schematic diagram of the present invention; Figure 2 For the present invention Figure 1 Another perspective structural diagram; Figure 3 This is a schematic diagram of the stirring and pulverizing mechanism of the present invention; Figure 4 This is a schematic diagram of the structure of the electric telescopic pole of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the heat insulation protective shell of the present invention; Figure 6 This is a schematic diagram of the structure of the front stirring and pulverizing blade and the rear stirring and pulverizing blade combined into a disc pressure plate according to the present invention; Figure 7 This is a schematic diagram of the front stirring and pulverizing blade and the rear stirring and pulverizing blade of the present invention.

[0017] 1. Processing table; 2. Rotating support rod; 3. Rice husk bucket fixing ring; 4. Rice husk placing bucket; 5. Mixing and crushing mechanism; 51. Heat-insulating protective shell; 52. Electric telescopic rod; 53. Front mixing and crushing blade; 54. Rear mixing and crushing blade; 55. Moving component; 551. Moving motor; 552. Ball screw; 553. Linkage plate; 554. Crushing and mixing motor; 555. Guide rod; 556. Anti-detachment plate; 6. Material forming plate; 7. Cutting blade; 8. Driven wheel; 9. Material forming motor; 10. Drive wheel; 11. Conveyor belt; 12. Driven gear; 13. Angle adjustment motor; 14. Drive gear; 15. Support frame; 16. Discharge port; 17. Feeding cover. Detailed Implementation

[0018] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0019] This invention provides a technical solution: Please see Figures 1 to 7An apparatus for preparing biomass fuel pellets using rice husks includes a processing table 1. A rotating support rod 2 is symmetrically installed on the top of the processing table 1. A rice husk bucket fixing ring 3 is rotatably connected to the rotating support rod 2 via an angle adjustment rod. A rice husk placing bucket 4 is fixedly installed on the inner circular surface of the rice husk bucket fixing ring 3. A uniformly distributed heating wire is fixedly installed inside the rice husk placing bucket 4. A stirring and crushing mechanism 5 is provided on the rice husk placing bucket 4.

[0020] The mixing and pulverizing mechanism 5 includes a heat-insulating protective shell 51 that movably penetrates the rice husk placing bucket 4. An electric telescopic rod 52 is fixedly installed inside the heat-insulating protective shell 51. The output end of the electric telescopic rod 52 penetrates the heat-insulating protective shell 51 and is fixedly installed with a front mixing and pulverizing blade 53. A rear mixing and pulverizing blade 54 is fixedly installed at one end of the heat-insulating protective shell 51 inside the rice husk placing bucket 4. The front mixing and pulverizing blade 53 and the rear mixing and pulverizing blade 54 are joined together to form an integral disc pressure plate structure. The mating surfaces of the front mixing and pulverizing blade 53 and the rear mixing and pulverizing blade 54 are cutting edges. The blade ends of the front mixing and pulverizing blade 53 and the rear mixing and pulverizing blade 54 are in contact with the inner wall of the rice husk placing bucket 4. The outer diameter of the front mixing and pulverizing blade 53 and the rear mixing and pulverizing blade 54 is the same as the inner diameter of the rice husk placing bucket 4. The front mixing and pulverizing blade 53 and the rear mixing and pulverizing blade 54 can rotate relative to the rice husk placing bucket 4 without causing motion interference. The mixing and pulverizing mechanism 5 also includes a moving component 55 disposed at the end of the rice husk placing bucket 4.

[0021] The working process of the mixing and crushing mechanism 5 is as follows: relying on the moving component 55 to drive the heat-insulating protective shell 51 (the heat-insulating protective shell is, for example, high-temperature resistant engineering plastic or ceramic fiber reinforced resin matrix composite material) to move, and cooperating with the extension and retraction of the electric telescopic rod 52 to realize the position adjustment of the front mixing and crushing blade 53. The two blades can rotate relative to the rice husk placing bucket 4. In the split state, the mixing and crushing actions are completed. After being assembled, a disc pressure plate structure is formed to complete the extrusion action, and the pressure plate can move against the bucket wall. The mixing, crushing, extrusion molding and bucket wall cleaning functions are integrated into one. The heat-insulating protective shell 51 protects the electric telescopic rod 52 from high temperature. The adaptation and cooperation between the two blades and the bucket wall makes the operation of each process more complete. There is no need for multiple equipment to cooperate, simplifying the granulation process, reducing material loss, and improving the overall operation efficiency of rice husk granulation.

[0022] Please see Figures 1-4The moving component 55 includes a moving motor 551 fixedly installed at the end of the rice husk placing bucket 4. A ball screw 552 is fixedly installed at the output end of the moving motor 551. A linkage plate 553 adapted to the ball screw 552 is threadedly connected to the ball screw 552. A crushing and stirring motor 554 is fixedly installed on the linkage plate 553. The output end of the crushing and stirring motor 554 is fixedly connected to the end of the heat-insulating protective shell 51 away from the rice husk placing bucket 4. The moving component 55 also includes a guide rod 555 fixedly installed at the end of the rice husk placing bucket 4. The guide rod 555 is slidably connected to the linkage plate 553. An anti-detachment plate 556 is fixedly installed at the end of the guide rod 555 away from the rice husk placing bucket 4. The anti-detachment plate 556 is rotatably connected to the end of the ball screw 552 away from the moving motor 551.

[0023] The working process of the moving component 55 is as follows: the moving motor 551 drives the ball screw 552 to rotate, which in turn drives the threaded linkage plate 553 to move in a directional manner along the guide rod 555. The anti-detachment plate 556 limits and prevents the ball screw 552 and the linkage plate 553 from detaching. When the linkage plate 553 moves, it simultaneously drives the crushing and mixing motor 554 and the heat insulation protective shell 51 to move in a telescopic manner. The crushing and mixing motor 554 can also drive the heat insulation protective shell 51 to rotate. The function of this component is to provide stable directional movement power and rotational power for the mixing and crushing mechanism 5. The guide rod 555 ensures the linearity of movement, and the anti-detachment plate 556 improves the stability of equipment operation. In this way, the mixing and crushing mechanism 5 completes a series of processes such as mixing, crushing, and extruding rice husks, realizing precise coordination of the actions of each mechanism and making the connection between each link of rice husk pelleting smoother.

[0024] In some embodiments, a bearing is embedded at the penetration point between the heat insulation protective shell 51 and the rice husk placing bucket 4, wherein the bearing is adapted to the heat insulation protective shell 51, and the heat insulation protective shell 51 can extend, retract and rotate along the inner ring of the bearing.

[0025] In this embodiment, the bearing is embedded in the through-hole between the heat-insulating protective shell 51 and the rice husk placing bucket 4, and is adapted to the heat-insulating protective shell 51. This allows the heat-insulating protective shell 51 to follow the drive of the moving component 55 and the crushing and stirring motor 554, and smoothly complete the combined movement of extension, contraction and rotation along the inner ring of the bearing, without interference during the movement. Its function is to reduce the frictional resistance between the heat-insulating protective shell 51 and the rice husk placing bucket 4 during the movement of the bearing, ensuring the smoothness of the extension, contraction and rotation of the heat-insulating protective shell 51, and at the same time providing radial support for the heat-insulating protective shell 51, improving its stability during movement, and ensuring the accuracy of the overall movement of the stirring and crushing mechanism 5.

[0026] Please see Figures 1 to 7 The top of the rice husk storage bucket 4 is symmetrically provided with feeding ports, and each feeding port is detachably connected with a feeding cover 17 by bolts.

[0027] After the rice husk raw material is pre-treated, the bolts are loosened to remove the feeding cover 17. The raw material is added into the bucket through the symmetrical feeding ports at the top of the rice husk placing bucket 4. After feeding is completed, the feeding cover 17 is reset and locked with bolts. Its function is to facilitate the rapid and uniform addition of rice husk raw material into the rice husk placing bucket 4 through the symmetrical feeding ports, thereby improving the feeding efficiency. The feeding cover 17, which is detachably connected by bolts, can seal the bucket body during the drying, crushing, and extrusion processes of the equipment, preventing rice husk fragments from splashing and water vapor from escaping at will. At the same time, it can also avoid material overflow during the process, thus ensuring the sealing and stability of the equipment operation.

[0028] Please see Figures 1-3 A forming plate 6 is fixedly installed at the other end of the rice husk placing barrel 4. The forming plate 6 has several forming holes for rice husk extrusion. A cutting blade 7 is rotatably connected to the forming plate 6. A driven wheel 8 is fixedly installed on the cutting blade 7. A forming motor 9 is fixedly installed on the outside of the rice husk placing barrel 4 through a motor frame. A driving wheel 10 is fixedly installed at the output end of the forming motor 9. The driving wheel 10 and the driven wheel 8 are connected by a transmission belt 11.

[0029] After the rice husks are crushed, the disc pressure plate compresses the rice husks at the forming plate 6. The rice husks are extruded from the forming hole to form long strips. At the same time, the forming motor 9 drives the drive wheel 10 to rotate, which drives the driven wheel 8 and the cutting blade 7 to rotate through the conveyor belt 11, thus cutting the extruded rice husk strips. Water vapor from the drying stage can also be discharged from the forming hole. Its function is to provide a forming channel for the rice husks to be extruded into strips, and to achieve the extrusion forming of rice husks in conjunction with the pressure plate. The cutting blade 7 driven by the forming motor 9 quickly cuts the rice husk strips into fuel pellets of uniform size. The integrated forming and cutting structure achieves seamless connection between the extrusion and pelleting processes, eliminating the need for additional forming and cutting equipment, simplifying the pelleting process, improving the efficiency and uniformity of rice husk pelleting, and at the same time, the forming hole also serves as a water vapor discharge point, which helps to improve the drying effect of rice husks.

[0030] Please see Figures 1-3 A driven gear 12 is fixedly installed on the angle adjustment rod, and an angle adjustment motor 13 is fixedly installed on the rotating support rod 2. A driving gear 14 is fixedly installed at the output end of the angle adjustment motor 13, and the driving gear 14 meshes with the driven gear 12.

[0031] When the crushed rice husks need to be extruded, the angle adjustment motor 13 is started, which drives the drive gear 14 at its output end to rotate. The drive gear 14 meshes with the driven gear 12 on the angle adjustment rod, thereby driving the angle adjustment rod, the rice husk barrel fixing ring 3 and the rice husk placing barrel 4 to rotate synchronously, so that the rice husk placing barrel 4 rotates from a horizontal state to the position where the forming plate 6 is aligned with the feeding port 16, providing a precise position guarantee for the subsequent collection and extrusion of rice husks into granules.

[0032] Please see Figures 1-2 The processing table 1 has a feeding port 16 on its surface, and a support frame 15 is fixedly installed on the top of the processing table 1. The supporting end of the support frame 15 abuts against the outer wall of the rice husk placing bucket 4.

[0033] When the rice husk placing barrel 4 is placed horizontally (i.e., the rice husk drying and crushing stage), the supporting end of the support frame 15 is always in contact with the outer wall of the rice husk placing barrel 4 to provide stable support. After the rice husks are squeezed and cut into particles, they fall from the material plate 6 and are discharged through the discharge port 16 on the processing table 1.

[0034] In practical use, the working principle of this invention is as follows: First, prepare the pre-treated rice husks to remove stones and impurities. Open the feeding cover 17 at the top of the rice husk placing tank 4 and put the rice husks into the rice husk placing tank 4. At this time, the rice husk placing tank 4 is kept horizontal. First, control the electric telescopic rod 52 inside the heat insulation protective shell 51 to complete the extension action, so that the front stirring and crushing blade 53 is at one end inside the rice husk placing tank 4. At the same time, the rear stirring and crushing blade 54 is moved to the other end inside the rice husk placing tank 4 by the moving component 55. After the raw materials are put in, power on the whole equipment. The heating wires evenly distributed inside the rice husk placing tank 4 immediately start working to dry the rice husks in the tank and remove the moisture from the rice husks. The water vapor generated during the drying process is discharged out through the small holes on the material forming plate 6.

[0035] During the drying stage, the crushing and stirring motor 554 is started and its slow rotation is controlled, which drives the front stirring and crushing blade 53 and the rear stirring and crushing blade 54 to rotate synchronously, stirring the rice husk raw material. At the same time, the extension end of the electric telescopic rod 52 is continuously shortened, which drives the front stirring and crushing blade 53 to move from one end of the rice husk placing bucket 4 to the other end, so as to achieve full stirring of the rice husk in the bucket and allow the moisture inside the rice husk to be drained quickly and fully. (Under the premise of not affecting the normal operation of the front stirring and crushing blade 53 and the rear stirring and crushing blade 54, moisture and temperature sensors can be installed on the inner wall of the rice husk placing bucket 4 according to actual production needs to monitor the drying status in real time. The fixed end of the electric telescopic rod 52 is built into the heat insulation protective shell 51, which can effectively isolate the high temperature generated by the heating wire, reduce the temperature impact on the electric telescopic rod 52, and ensure its operational stability.)

[0036] After the rice husks are dried, adjust the crushing and stirring motor 554 to make it rotate at high speed. At the same time, continue to control the extension end of the electric telescopic rod 52 to continuously shorten, driving the front stirring and crushing blade 53 to move from one end of the rice husk placing bucket 4 to the other end. Use the cutting edges of the front stirring and crushing blade 53 and the rear stirring and crushing blade 54 to crush the dried rice husks in the bucket.

[0037] After the rice husks are crushed, the angle adjustment motor 13 is started (this motor is a model with a self-locking function, which can ensure that the rice husk placing bucket 4 remains stable after rotating to the specified angle). The rotation of the angle adjustment motor 13 drives the drive gear 14 to rotate synchronously. The drive gear 14 meshes with the driven gear 12, driving the driven gear 12 and the angle adjustment rod to rotate. The angle adjustment rod further drives the rice husk bucket fixing ring 3 to rotate, realizing the 90-degree rotation of the rice husk placing bucket 4, so that the material plate 6 is precisely above the feeding port 16 of the processing table 1. After the position is adjusted, the crushing and stirring motor 554 is controlled to rotate, so that the rice husk fragments attached to the front stirring and crushing blade 53 and the rear stirring and crushing blade 54 are detached and fall onto the material plate 6. Under the action of gravity, all the crushed rice husks in the rice husk placing bucket 4 near the rear stirring and crushing blade 54 are also collected at the material plate 6 (a detachable cover plate can be installed on the material plate 6 to prevent the rice husk fragments from overflowing before being squeezed into granules). Then the electric extension is controlled. The telescopic end of the telescopic rod 52 is shortened, so that the front stirring and crushing blade 53 and the rear stirring and crushing blade 54 are joined together to form an integral disc pressure plate structure. Then, the moving motor 551 is started, and the moving motor 551 drives the ball screw 552 to rotate. The ball screw 552 is threadedly engaged with the linkage plate 553, which drives the linkage plate 553 to move along the guide rod 555 towards the rice husk placing bucket 4. At the same time, the linkage plate 553 drives the crushing and stirring motor 554 and the heat insulation protective shell 51 to move synchronously. The heat insulation protective shell 51 and the rice husk placing bucket 4 are provided with a suitable bearing, which allows the heat insulation protective shell 51 to move smoothly in the bearing. The heat insulation protective shell 51 further drives the internal electric telescopic rod 52 to push into the rice husk placing bucket 4. During the pushing process, the disc pressure plate formed by the front stirring and crushing blade 53 and the rear stirring and crushing blade 54 continuously squeezes the crushed and dried rice husks at the material plate 6 downward. Under the action of the squeezing force, the rice husks are squeezed out from the small holes on the material plate 6 to form long strips.

[0038] While extruding, the forming motor 9 is started, which drives the drive wheel 10 to rotate. The drive wheel 10 is connected to the driven wheel 8 through the transmission belt 11, which drives the driven wheel 8 and the cutting blade 7 to rotate at high speed. The rotating cutting blade 7 quickly cuts the rice husk strips extruded from the small holes of the forming plate 6 to form uniform biomass fuel pellets. The cut pellets fall from the discharge port 16. A collection box can be placed below the discharge port 16 to collect the rice husk fuel pellets.

[0039] After granulation, since the diameter of the disc plate formed by the front mixing and crushing blade 53 and the rear mixing and crushing blade 54 is equal to the inner diameter of the rice husk placing bucket 4, the electric telescopic rod 52 can be directly controlled to extend and retract, causing the disc plate to move against the inner wall of the rice husk placing bucket 4. This can quickly clean the rice husk impurities attached to the inner wall of the rice husk placing bucket 4 without the need for additional cleaning equipment or operations, further improving the ease of use of the equipment. At the same time, it avoids the waste of residual raw materials and improves the overall resource utilization efficiency of rice husk raw materials.

[0040] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of the present invention.

Claims

1. An apparatus for preparing biomass fuel pellets using rice husks, comprising a processing table (1), wherein a rotating support rod (2) is symmetrically mounted on the top of the processing table (1), and a rice husk bucket fixing ring (3) is rotatably connected to the rotating support rod (2) via an angle adjustment rod, and a rice husk placing bucket (4) is fixedly mounted on the inner circular surface of the rice husk bucket fixing ring (3), and a uniformly distributed heating wire is fixedly mounted inside the rice husk placing bucket (4), characterized in that: The rice husk storage bucket (4) is equipped with a stirring and crushing mechanism (5); The stirring and crushing mechanism (5) includes a heat-insulating protective shell (51) that moves through the rice husk placing bucket (4). An electric telescopic rod (52) is fixedly installed inside the heat-insulating protective shell (51). The output end of the electric telescopic rod (52) passes through the heat-insulating protective shell (51) and is fixedly installed with a front stirring and crushing blade (53). A rear stirring and crushing blade (54) is fixedly installed at one end of the heat-insulating protective shell (51) inside the rice husk placing bucket (4). The front stirring and crushing blade (53) and the rear stirring and crushing blade (54) are joined together to form an integral disc pressure plate structure, and the mating surfaces of the front stirring and crushing blade (53) and the rear stirring and crushing blade (54) are cutting edges. The blade ends of the front stirring and crushing blade (53) and the rear stirring and crushing blade (54) are in contact with the inner wall of the rice husk placing bucket (4). The outer diameter of the front stirring and crushing blade (53) and the rear stirring and crushing blade (54) is the same as the inner diameter of the rice husk placing bucket (4). The front stirring and crushing blade (53) and the rear stirring and crushing blade (54) can rotate relative to the rice husk placing bucket (4) without causing motion interference. The stirring and crushing mechanism (5) also includes a moving component (55) provided at the end of the rice husk placing bucket (4).

2. The apparatus for preparing biomass fuel pellets using rice husks according to claim 1, characterized in that: The moving component (55) includes a moving motor (551) fixedly installed at the end of the rice husk placing bucket (4). A ball screw (552) is fixedly installed at the output end of the moving motor (551). A linkage plate (553) adapted to the ball screw (552) is threadedly connected to the ball screw (552). A crushing and stirring motor (554) is fixedly installed on the linkage plate (553). The output end of the crushing and stirring motor (554) is fixedly connected to the end of the heat insulation protective shell (51) away from the rice husk placing bucket (4).

3. The apparatus for preparing biomass fuel pellets using rice husks according to claim 2, characterized in that: The moving component (55) also includes a guide rod (555) fixedly installed at the end of the rice husk placing bucket (4). The guide rod (555) is slidably connected to the linkage plate (553). An anti-detachment plate (556) is fixedly installed at the end of the guide rod (555) away from the rice husk placing bucket (4). The anti-detachment plate (556) is rotatably connected to the end of the ball screw (552) away from the moving motor (551).

4. The apparatus for preparing biomass fuel pellets using rice husks according to claim 1, characterized in that: A bearing is embedded at the penetration point between the heat insulation protective shell (51) and the rice husk placing bucket (4), wherein the bearing is adapted to the heat insulation protective shell (51), and the heat insulation protective shell (51) can extend and rotate along the inner ring of the bearing.

5. The apparatus for preparing biomass fuel pellets using rice husks according to claim 1, characterized in that: The top of the rice husk storage bucket (4) is symmetrically provided with feeding ports, and each feeding port is detachably connected with a feeding cover (17) by bolts.

6. The apparatus for preparing biomass fuel pellets using rice husks according to claim 1, characterized in that: A forming plate (6) is fixedly installed at the other end of the rice husk placing barrel (4). The forming plate (6) has several forming holes for rice husk extrusion. A cutting blade (7) is rotatably connected to the forming plate (6). A driven wheel (8) is fixedly installed on the cutting blade (7). A forming motor (9) is fixedly installed on the outside of the rice husk placing barrel (4) through a motor frame. A driving wheel (10) is fixedly installed at the output end of the forming motor (9). The driving wheel (10) and the driven wheel (8) are connected by a transmission belt (11).

7. The apparatus for preparing biomass fuel pellets using rice husks according to claim 1, characterized in that: A driven gear (12) is fixedly installed on the angle adjustment rod, and an angle adjustment motor (13) is fixedly installed on the rotating support rod (2). A driving gear (14) is fixedly installed at the output end of the angle adjustment motor (13), and the driving gear (14) meshes with the driven gear (12).

8. The apparatus for preparing biomass fuel pellets using rice husks according to claim 1, characterized in that: The processing table (1) has a feeding port (16) on its surface. A support frame (15) is fixedly installed on the top of the processing table (1). The supporting end of the support frame (15) abuts against the outer wall of the rice husk storage bucket (4).

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