A biomass fuel pellet forming machine

Abstract

This invention discloses a biomass fuel pellet forming machine, relating to the field of biomass fuel processing technology. It includes a base and a connecting frame, with a control device mounted on the connecting frame. A support frame is fixedly mounted on the base, and a support plate is mounted on the support frame. A protective cover is mounted on the support plate, and an outlet is provided on the protective cover. A feed hood is fixedly connected to the protective cover. A drive unit is mounted on the base, and a transmission unit that cooperates with the drive unit is also mounted on the base. An extrusion mechanism for extruding biomass fuel into rod shapes is located inside the feed hood. A pelletizing mechanism for pelletizing the rod-shaped biomass fuel is mounted on the transmission unit. By incorporating the pelletizing mechanism, this device allows for flexible adjustment of the biomass fuel pellet length, thereby meeting the pellet size requirements of different production scenarios. Compared to traditional fixed-distance pelletizing structures, it offers greater adaptability, thus expanding the applicability of this device to a certain extent.

Description

Technical Field

[0001] This invention relates to the field of biomass fuel processing technology, and in particular to a biomass fuel pellet forming machine. Background Technology

[0002] Biomass fuel pellets, as a clean and environmentally friendly renewable energy source, are widely used in industrial boilers, residential heating, and power generation due to their advantages such as high combustion efficiency and low pollution emissions. Biomass fuel pellet forming machines are the core equipment for pressing biomass raw materials such as straw, wood chips, and sawdust into pellets. Pellet length, as a key specification parameter, directly affects the convenience of fuel storage and transportation, combustion stability, and suitability for various applications. For example, short pellets are suitable for small household stoves, while long pellets are required for industrial boilers and power plants. The differentiated requirements for pellet length in different application scenarios are becoming increasingly significant.

[0003] Currently, biomass fuel pellet forming machines on the market have significant technical defects. Most existing forming machines use a fixed blade spacing design, meaning the distance between the cutting blades and the discharge die is not adjustable, limiting the production to a single pellet length. Switching to different pellet lengths requires stopping the machine to disassemble and replace the blades or adjust the die assembly, a cumbersome and time-consuming process that significantly reduces production efficiency. Furthermore, frequent disassembly leads to component wear, increasing maintenance costs and the risk of malfunction. In addition, the traditional fixed blade spacing structure has extremely poor adaptability, failing to meet diverse market demands. To cover different customer groups, manufacturers need to purchase multiple forming machines of different specifications, significantly increasing equipment investment costs. Some companies have attempted to adjust pellet length manually, but this not only increases labor intensity but also results in uneven lengths, material waste, and inconsistent product quality. Therefore, improvements are urgently needed. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a biomass fuel pellet forming machine, which aims to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a biomass fuel pellet forming machine, comprising a base and a connecting frame fixedly mounted on the base, a control device fixedly mounted on the connecting frame, a drive chamber formed inside the base, a support frame fixedly mounted on the base, a support plate fixedly mounted on the support frame, an inner groove formed inside the support plate, a protective cover fixedly mounted on the support plate, an outlet provided on the protective cover, a feed hood fixedly connected to the protective cover, an inlet provided on the feed hood, a drive unit provided on the base, a transmission unit cooperating with the drive unit provided on the base, an extrusion mechanism for extruding biomass fuel into rod shapes provided inside the feed hood, and a pelletizing mechanism for pelletizing rod-shaped biomass fuel provided on the transmission unit.

[0006] Preferably, the driving unit includes: A drive motor is mounted on the base and is detachably and fixedly connected to the base. The drive motor is electrically connected to the control device. A drive shaft is rotatably mounted on the base, and one end of the drive shaft near the drive motor is fixedly connected to the output end of the drive motor. The drive gear is located in the drive chamber and is fixedly connected to the drive shaft.

[0007] Preferably, the transmission unit includes: A drive shaft is rotatably mounted on the base, with one end of the drive shaft extending out of the base; The driven gear is located in the drive chamber and is fixedly connected to the transmission shaft; the driven gear meshes with the driving gear. A connecting shaft is fixedly disposed at one end of the transmission shaft located outside the drive chamber, and the connecting shaft is coaxial with the transmission shaft; A baffle is fixedly installed at the end of the connecting shaft away from the transmission shaft.

[0008] Preferably, the extrusion mechanism includes: A fixing sleeve is fitted onto the connecting shaft and fixedly connected to the connecting shaft; The device has three connecting plates, which are evenly distributed around the circumference of the fixed sleeve, and the connecting plates are fixedly connected to the fixed sleeve. A ring die is located inside the protective cover and is fixedly connected to the feed cover at one end of the protective cover. The axis of the ring die coincides with the axis of the connecting shaft, and multiple uniformly distributed die holes are opened through the ring die. The extrusion section has three sets, and the three sets of extrusion sections are respectively arranged on three connecting plates. The extrusion section is used to cooperate with the ring die to extrude biomass fuel into rod shape.

[0009] Preferably, the extrusion section includes: An extrusion shaft is mounted on the connecting plate and is rotatably connected to the connecting plate; A pressure roller is located at one end of the extrusion shaft near the base and is fixedly connected to the pressure roller. The pressure roller is used to cooperate with the ring die to extrude biomass fuel into a rod shape. A rotating component is located inside the feed hood, and the rotating component is used to drive the pressure roller to rotate.

[0010] Preferably, the rotating component includes: The feed hood has multiple connecting plates, which are evenly distributed in a circular pattern inside the feed hood. One end of each connecting plate is fixedly connected to the inner wall of the feed hood, and the other end of each connecting plate is fixedly connected to a fixed gear. Multiple evenly distributed material leakage grooves are opened through the fixed gear. A rotating gear is located at the end of the extrusion shaft away from the base, and the rotating gear meshes with the fixed gear.

[0011] Preferably, the granulation mechanism includes: A support plate is rotatably mounted on the drive shaft, and the surface of the support plate near the ring die is fixedly connected to the ring die; A turntable is located in the inner groove and is fixedly connected to the drive shaft. An annular support block is fixedly provided on the surface of the turntable away from the base. The inner ring surface of the annular support block is in contact with the outer ring surface of the bearing plate, and the outer ring surface of the annular support block is in contact with the surface of the support plate near the annular support block. An annular rotating plate is located inside the protective cover and is rotatably mounted on the support plate. The surface of the annular rotating plate near the annular support block is fixedly connected to the annular support block. Multiple evenly distributed internal grooves are opened inside the annular rotating plate. A pelletizing plate is slidably disposed on the annular rotating plate, and the pelletizing plate is used to cut the rod-shaped biomass fuel extruded from the die orifice; An adjustment section is located within the built-in groove and is used to adjust the distance between the pelletizing plate and the ring die.

[0012] Preferably, the adjustment unit includes: A sliding block is located in the built-in groove and is slidably connected to the annular rotating plate. The surface of the sliding block near the granulation plate is fixedly connected to the granulation plate. An electric push rod is located in the built-in groove and is electrically connected to the control device. The electric push rod is fixedly connected to the annular rotating plate and is used to push the sliding block to slide in the built-in groove. An internal spring is located within the internal slot, and the internal spring is always in a compressed state.

[0013] Preferably, multiple sets of evenly distributed ball bearings are rolled on the surfaces of the bearing plate and the support plate near the annular support plate.

[0014] Preferably, a material distribution block for distributing material between the connecting plates is fixedly provided on the surface of the fixed gear away from the base.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. This device is equipped with a pelletizing mechanism, which allows for flexible adjustment of the pellet length of biomass fuel, thereby meeting the needs of different production scenarios for pellet specifications. Compared with the traditional pelletizing structure with fixed blade spacing, it has stronger adaptability, thus expanding the applicability of this device to a certain extent.

[0016] 2. By setting up material distribution blocks, the biomass entering the feed hood is evenly distributed to the working area of ​​each pressure roller, avoiding raw material accumulation and ensuring a stable and smooth extrusion molding process, thereby reducing the failure rate of this device to a certain extent. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A three-dimensional structural schematic diagram of a biomass fuel pellet forming machine is shown.

[0019] Figure 2 A front view of a biomass fuel pellet forming machine is shown.

[0020] Figure 3 A right view of a biomass fuel pellet forming machine is shown.

[0021] Figure 4 It shows Figure 3 Sectional view of AA.

[0022] Figure 5 It shows Figure 4 A magnified view of the local structure at point A in the middle.

[0023] Figure 6 A top view of a biomass fuel pellet forming machine is shown.

[0024] Figure 7 A partial structural schematic diagram of a biomass fuel pellet forming machine is shown.

[0025] Legend: 1. Base; 2. Connecting frame; 3. Control device; 4. Drive chamber; 5. Support frame; 6. Support plate; 7. Inner groove; 8. Protective cover; 9. Outlet; 10. Feed hood; 11. Inlet; 12. Drive motor; 13. Drive shaft; 14. Drive gear; 15. Transmission shaft; 16. Driven gear; 17. Connecting shaft; 18. Baffle; 19. Fixed sleeve; 20. Connecting plate; 21. Ring die; 22. Die hole; 23. Extrusion shaft; 24. Pressure roller; 25. Connecting plate; 26. Fixed gear; 27. Discharge trough; 28. Rotary gear; 29. ​​Bearing plate; 30. Turntable; 31. Annular support block; 32. Annular rotating plate; 33. Internal groove; 34. Granulation plate; 35. Sliding block; 36. Electric push rod; 37. Internal spring; 38. Ball bearing; 39. Distributing block. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0028] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] Reference Figures 1 to 7 The following is a further description of an embodiment of a biomass fuel pellet forming machine according to the present invention.

[0031] A biomass fuel pellet forming machine includes a base 1 and a connecting frame 2 fixedly mounted on the base 1. A control device 3 is fixedly mounted on the connecting frame 2. A drive chamber 4 is formed inside the base 1. A support frame 5 is fixedly mounted on the base 1. A support plate 6 is fixedly mounted on the support frame 5. An inner groove 7 is formed inside the support plate 6. A protective cover 8 is fixedly mounted on the support plate 6. An outlet 9 is provided on the protective cover 8. A feed hood 10 is fixedly connected to the protective cover 8. An inlet 11 is provided on the feed hood 10. A drive unit is provided on the base 1. The drive unit includes: The drive motor 12 is mounted on the base 1 and is detachably and fixedly connected to the base 1. The drive motor 12 is electrically connected to the control device 3. The drive shaft 13 is rotatably mounted on the base 1, and one end of the drive shaft 13 near the drive motor 12 is fixedly connected to the output end of the drive motor 12. The drive gear 14 is located inside the drive chamber 4 and is fixedly connected to the drive shaft 13. It should be noted that the drive gear 14 is enclosed inside the drive chamber 4, which prevents biomass dust and debris from entering the meshing gap, thereby making the transmission smooth and without jamming, improving the power transmission efficiency, and effectively reducing the energy consumption of the drive motor 12.

[0032] During operation, the control device 3 controls the drive motor 12 to start, thereby causing the drive shaft 13, which is fixedly connected to the output end of the drive motor 12, to rotate, which in turn drives the drive gear 14, which is fixedly connected to the drive shaft 13, to rotate, thereby transmitting power to the transmission part.

[0033] The base 1 is provided with a transmission part that cooperates with the drive unit. The transmission part includes: The drive shaft 15 is rotatably mounted on the base 1, and one end of the drive shaft 15 extends out of the base 1; Driven gear 16 is located in drive chamber 4 and is fixedly connected to drive shaft 15. Driven gear 16 meshes with drive gear 14. The connecting shaft 17 is fixedly installed at one end of the transmission shaft 15 located outside the drive chamber 4, and the connecting shaft 17 and the transmission shaft 15 are coaxial. It should be noted that the coaxial integrated design of the connecting shaft 17 and the transmission shaft 15 effectively reduces the coaxiality error, and there is no eccentric shaking when the extrusion mechanism revolves. The pressure of the pressure roller 24 and the ring die 21 is uniform, avoiding the loosening and breakage of particles caused by insufficient local extrusion.

[0034] The baffle 18 is fixedly installed at the end of the connecting shaft 17 away from the transmission shaft 15.

[0035] In use, the meshing between the driving gear 14 and the driven gear 16 drives the driven gear 16 to rotate, thereby causing the transmission shaft 15, which is fixedly connected to the driven gear 16, to rotate, which in turn drives the connecting shaft 17, which is fixedly connected to the transmission shaft 15, to rotate.

[0036] The feed hood 10 is equipped with an extrusion mechanism for extruding biomass fuel into a rod shape. The extrusion mechanism includes: The fixed sleeve 19 is sleeved on the connecting shaft 17 and fixedly connected to the connecting shaft 17. With this configuration, the fixed sleeve 19 and the connecting shaft 17 are tightly fastened without relative sliding, and the connecting plate 20 is rigidly connected to the fixed sleeve 19. This structure has high strength, is suitable for high-capacity continuous extrusion operations, and reduces the risk of deformation and breakage.

[0037] There are three connecting plates 20, and the three connecting plates 20 are evenly distributed on the fixing sleeve 19 in a circle. The connecting plates 20 are fixedly connected to the fixing sleeve 19. The ring die 21 is located inside the protective cover 8 and is fixedly connected to the feed cover 10 at one end of the protective cover 8. The axis of the ring die 21 coincides with the axis of the connecting shaft 17. This arrangement ensures that the die holes 22 are uniformly penetrated and have a consistent diameter, resulting in a uniform biomass fuel extrusion speed and smooth, unblocked rod-shaped biomass fuel discharge, providing a stable extrusion foundation for subsequent pelleting. The ring die 21 has multiple uniformly distributed die holes 22 penetrating through it. The extrusion section has three sets, and the three sets of extrusion sections are respectively disposed on three connecting plates 20. The extrusion section is used to cooperate with the ring die 21 to extrude biomass fuel into a rod shape. The extrusion section includes: The extrusion shaft 23 is mounted on the connecting plate 20 and is rotatably connected to the connecting plate 20; The pressure roller 24 is located at one end of the extrusion shaft 23 near the base 1 and is fixedly connected to the pressure roller 24. The pressure roller 24 is used to cooperate with the ring die 21 to extrude biomass fuel into a rod shape. A rotating component, located inside the feed hood 10, is used to drive the pressure roller 24 to rotate. The rotating component includes: There are multiple connecting plates 25, which are evenly distributed in a circle inside the feed hood 10. One end of the connecting plate 25 is fixedly connected to the inner wall of the feed hood 10, and the other end of the connecting plate 25 is fixedly connected to a fixed gear 26. Multiple evenly distributed material leakage grooves 27 are opened through the fixed gear 26. With this arrangement, the material leakage grooves 27 on the fixed gear 26 are evenly distributed, so that the biomass fuel falls evenly into the working area of ​​the pressure roller 24. Together with the material distribution block 39, it realizes the whole area feeding and avoids local material shortage and idle rotation and local material overload. A material distribution block 39 for distributing material between the connecting plates 25 is fixedly installed on the surface of the fixed gear 26 away from the base 1. It should be noted that the material distribution block 39 can evenly distribute the biomass entering the feed hood 10 to the working area of ​​each pressure roller 24, avoid raw material accumulation, ensure the stable and smooth extrusion molding process, and thus reduce the failure rate of this device to a certain extent. Rotary gear 28 is located at the end of extrusion shaft 23 away from base 1, and rotary gear 28 meshes with fixed gear 26.

[0038] During operation, the fixed sleeve 19, which is fixedly connected to the connecting shaft 17, rotates, causing the connecting plate 20, which is mounted on the fixed sleeve 19, to rotate around the axis of the connecting shaft 17. This, in turn, causes the extrusion shaft 23, which is rotatably connected to the connecting plate 20, to rotate around the axis of the connecting shaft 17. Consequently, the pressure roller 24, which is fixedly connected to the extrusion shaft 23, rotates around the axis of the connecting shaft 17. Simultaneously, the extrusion shaft 23 also drives the rotating gear 28, which is fixedly connected to it, to rotate around the axis of the connecting shaft 17. Through the meshing between the rotating gear 28 and the fixed gear 26, the rotating gear 28 rotates around the axis of the connecting shaft 17. While rotating around the axis of the connecting shaft 17, the extrusion shaft 23 also rotates, causing the extrusion shaft 23 to rotate around the axis of the connecting shaft 17. Consequently, the pressure roller 24, which is fixedly connected to the extrusion shaft 23, also rotates around the axis of the connecting shaft 17, thus extruding the biomass fuel between the pressure roller 24 and the ring die 21 into the die hole 22 in the ring die 21. As the pressure roller 24 continues to extrude the biomass fuel into the die hole 22, a rod-shaped extruded biomass fuel is formed at the end of the die hole 22 away from the axis of the connecting shaft 17.

[0039] The transmission unit is equipped with a pelletizing mechanism for pelletizing rod-shaped biomass fuel. The pelletizing mechanism includes: The bearing plate 29 is rotatably mounted on the drive shaft 15, and the surface of the bearing plate 29 near the ring mold 21 is fixedly connected to the ring mold 21; Multiple sets of evenly distributed ball bearings 38 are rolled on the surfaces of the bearing plate 29 and the support plate 6 near the annular support plate. It should be noted that the arrangement of the ball bearings 38 allows the bearing plate 29 and the support plate 6 to cooperate with the ball bearings 38 to support the rotation of the annular rotating plate 32, effectively reducing the frictional resistance during rotation, reducing the energy consumption and wear of the equipment, and extending the service life of the equipment; Turntable 30 is located in inner groove 7 and is fixedly connected to drive shaft 15. An annular support block 31 is fixedly provided on the surface of turntable 30 away from base 1. The inner ring surface of the annular support block 31 is in contact with the outer ring surface of bearing plate 29, and the outer ring surface of the annular support block 31 is in contact with the surface of support plate 6 near the annular support block 31. The annular rotating plate 32 is located inside the protective cover 8 and is rotatably sleeved on the bearing plate 29. The surface of the annular rotating plate 32 near the annular support block 31 is fixedly connected to the annular support block 31. Multiple evenly distributed internal grooves 33 are opened inside the annular rotating plate 32. The pelletizing plate 34 is slidably disposed on the annular rotating plate 32. The pelletizing plate 34 is used to cut off the rod-shaped biomass fuel extruded from the die hole 22. An adjustment section, located within the built-in groove 33, is used to adjust the distance between the pelletizing plate 34 and the ring die 21. The adjustment section includes: The sliding block 35 is located in the built-in groove 33 and is slidably connected to the annular rotating plate 32. The surface of the sliding block 35 near the granulation plate 34 is fixedly connected to the granulation plate 34. An electric push rod 36 is located in the built-in groove 33 and is electrically connected to the control device 3. The electric push rod 36 is fixedly connected to the annular rotating plate 32. The electric push rod 36 is used to push the sliding block 35 to slide in the built-in groove 33. The built-in spring 37 is located in the built-in slot 33, and the built-in spring 37 is always in a compressed state.

[0040] Simultaneously, the rotation of the drive shaft 15 drives the turntable 30 fixedly connected to it to rotate, which in turn causes the annular support block 31 fixedly mounted on the turntable 30 to rotate around the axis of the drive shaft 15. This causes the annular rotating plate 32 fixedly connected to the annular support block 31 to rotate around the axis of the drive shaft 15, which in turn causes the pelletizing plate 34 slidably connected to the annular rotating plate 32 to rotate around the axis of the drive shaft 15. This process pelletizes the rod-shaped biomass fuel into pellets. The pelletized biomass fuel falls onto the annular rotating plate 32, and the pelletized biomass fuel follows the annular rotating plate 32 as it rotates around the axis of the drive shaft 15. Under the action of centrifugal force, it is finally transported out through the outlet 9 on the protective cover 8. When it is necessary to adjust the pellet length of biomass fuel, the electric push rod 36 is started by the control device 3, so that the electric push rod 36 pushes the sliding block 35 to slide in the built-in groove 33, thereby causing the pelleting plate 34, which is fixedly connected to the sliding block 35, to move on the annular rotating plate 32, thereby adjusting the distance between the pelleting plate 34 and the outer surface of the ring die 21. This device is equipped with an adjustment section, which allows for flexible adjustment of the pellet length of biomass fuel, thereby meeting the pellet size requirements of different production scenarios. Compared with the traditional fixed blade spacing pelleting structure, it has stronger adaptability, thus expanding the application range of this device to a certain extent.

[0041] Working principle: During use, external biomass fuel enters the protective cover 8 through inlet 11 and eventually falls into the ring die 21. Then, the control device 3 controls the drive motor 12 to start, which causes the drive shaft 13, which is fixedly connected to the output end of the drive motor 12, to rotate. This, in turn, drives the drive gear 14, which is fixedly connected to the drive shaft 13, to rotate. Through the meshing between the drive gear 14 and the driven gear 16, the driven gear 16 is driven to rotate, which in turn drives the transmission shaft 15, which is fixedly connected to the driven gear 16, to rotate. This drives the connecting shaft 17, which is fixedly connected to the transmission shaft 15, to rotate, which in turn drives the fixed sleeve 19, which is fixedly connected to the connecting shaft 17, to rotate. This causes the connecting plate 20, which is mounted on the fixed sleeve 19, to rotate around the axis of the connecting shaft 17, which in turn causes the extrusion shaft 23, which is rotatably connected to the connecting plate 20, to rotate around the axis of the connecting shaft 17. The extrusion shaft 23 rotates, causing the pressure roller 24, which is fixedly connected to the extrusion shaft 23, to rotate around the axis of the connecting shaft 17. At the same time, the extrusion shaft 23 also drives the rotating gear 28, which is fixedly connected to it, to rotate around the axis of the connecting shaft 17. Through the meshing between the rotating gear 28 and the fixed gear 26, the rotating gear 28 rotates around the axis of the connecting shaft 17 while also rotating itself. This causes the extrusion shaft 23 to rotate around the axis of the connecting shaft 17 while also rotating itself. Consequently, the pressure roller 24, which is fixedly connected to the extrusion shaft 23, rotates around the axis of the connecting shaft 17 while also rotating itself. This forces the biomass fuel between the pressure roller 24 and the ring die 21 into the die hole 22 in the ring die 21. As the pressure roller 24 continuously forces the biomass fuel into the die hole 22, a rod-shaped extruded biomass fuel is formed at the end of the die hole 22 away from the axis of the connecting shaft 17. Simultaneously, the rotation of the drive shaft 15 drives the turntable 30 fixedly connected to it to rotate, which in turn causes the annular support block 31 fixedly mounted on the turntable 30 to rotate around the axis of the drive shaft 15. This causes the annular rotating plate 32 fixedly connected to the annular support block 31 to rotate around the axis of the drive shaft 15, which in turn causes the pelletizing plate 34 slidably connected to the annular rotating plate 32 to rotate around the axis of the drive shaft 15. This process pelletizes the rod-shaped biomass fuel into pellets. The pelletized biomass fuel falls onto the annular rotating plate 32, and the pelletized biomass fuel follows the annular rotating plate 32 as it rotates around the axis of the drive shaft 15. Under the action of centrifugal force, it is finally transported out through the outlet 9 on the protective cover 8.

[0042] It should be noted that when it is necessary to adjust the pellet length of biomass fuel, the electric push rod 36 is activated by the control device 3, which pushes the sliding block 35 to slide in the built-in groove 33, thereby causing the pelleting plate 34, which is fixedly connected to the sliding block 35, to move on the annular rotating plate 32, thereby adjusting the distance between the pelleting plate 34 and the outer surface of the ring die 21.

[0043] The above description of the embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A biomass fuel pellet forming machine, comprising a base (1) and a connecting frame (2) fixedly mounted on the base (1), wherein a control device (3) is fixedly mounted on the connecting frame (2), characterized in that, The base (1) has a drive chamber (4) inside. A support frame (5) is fixedly installed on the base (1). A support plate (6) is fixedly installed on the support frame (5). An inner groove (7) is opened in the support plate (6). A protective cover (8) is fixedly installed on the support plate (6). An outlet (9) is provided on the protective cover (8). A feed hood (10) is fixedly connected to the protective cover (8). An inlet (11) is provided on the feed hood (10). A drive unit is provided on the base (1). A transmission unit that cooperates with the drive unit is provided on the base (1). An extrusion mechanism for extruding biomass fuel into rod shape is provided inside the feed hood (10). A pelletizing mechanism for pelletizing rod-shaped biomass fuel is provided on the transmission unit.

2. The biomass fuel pellet forming machine according to claim 1, characterized in that, The drive unit includes: A drive motor (12) is mounted on the base (1) and is detachably fixed to the base (1). The drive motor (12) is electrically connected to the control device (3). The drive shaft (13) is rotatably mounted on the base (1), and one end of the drive shaft (13) near the drive motor (12) is fixedly connected to the output end of the drive motor (12); The drive gear (14) is located in the drive chamber (4) and is fixedly connected to the drive shaft (13).

3. A biomass fuel pellet forming machine according to claim 2, characterized in that, The transmission unit includes: A drive shaft (15) is rotatably mounted on the base (1), and one end of the drive shaft (15) extends out of the base (1); Driven gear (16) is located in the drive chamber (4) and is fixedly connected to the transmission shaft (15). Driven gear (16) meshes with drive gear (14). A connecting shaft (17) is fixedly disposed at one end of the transmission shaft (15) located outside the drive chamber (4), and the connecting shaft (17) is coaxial with the transmission shaft (15); A baffle (18) is fixedly disposed at the end of the connecting shaft (17) away from the transmission shaft (15).

4. A biomass fuel pellet forming machine according to claim 3, characterized in that, The extrusion mechanism includes: A fixing sleeve (19) is fitted onto the connecting shaft (17) and fixedly connected to the connecting shaft (17); There are three connecting plates (20), and the three connecting plates (20) are evenly distributed on the fixed sleeve (19) in a circle. The connecting plates (20) are fixedly connected to the fixed sleeve (19). The ring die (21) is located inside the protective cover (8) and is fixedly connected to the feed cover (10) at one end of the protective cover (8). The axis of the ring die (21) coincides with the axis of the connecting shaft (17). Multiple uniformly distributed die holes (22) are opened through the ring die (21). The extrusion section has three sets, and the three sets of extrusion sections are respectively disposed on three connecting plates (20). The extrusion section is used to cooperate with the ring die (21) to extrude biomass fuel into rod shape.

5. A biomass fuel pellet forming machine according to claim 4, characterized in that, The extrusion section includes: The extrusion shaft (23) is disposed on the connecting plate (20) and is rotatably connected to the connecting plate (20); A pressure roller (24) is located at one end of the extrusion shaft (23) near the base (1) and is fixedly connected to the pressure roller (24). The pressure roller (24) is used to cooperate with the ring die (21) to extrude biomass fuel into a rod shape. The rotating component is located inside the feed hood (10) and is used to drive the pressure roller (24) to rotate.

6. A biomass fuel pellet forming machine according to claim 5, characterized in that, The rotating component includes: There are multiple connecting plates (25), and the multiple connecting plates (25) are evenly distributed in the feed hood (10) in a circle. One end of the connecting plate (25) is fixedly connected to the inner wall of the feed hood (10), and the other end of the connecting plate (25) is fixedly connected to a fixed gear (26). Multiple evenly distributed material leakage grooves (27) are opened through the fixed gear (26). A rotating gear (28) is located at one end of the extrusion shaft (23) away from the base (1), and the rotating gear (28) meshes with the fixed gear (26).

7. A biomass fuel pellet forming machine according to claim 6, characterized in that, The granulation mechanism includes: The support plate (29) is rotatably mounted on the drive shaft (15), and the surface of the support plate (29) near the ring mold (21) is fixedly connected to the ring mold (21); Turntable (30) is located in the inner groove (7) and is fixedly connected to the drive shaft (15). An annular support block (31) is fixedly provided on the surface of the turntable (30) away from the base (1). The inner ring surface of the annular support block (31) is in contact with the outer ring surface of the bearing plate (29). The outer ring surface of the annular support block (31) is in contact with the surface of the support plate (6) near the annular support block (31). An annular rotating plate (32) is located inside the protective cover (8) and is rotatably mounted on the bearing plate (29). The surface of the annular rotating plate (32) near the annular support block (31) is fixedly connected to the annular support block (31). Multiple evenly distributed internal grooves (33) are opened in the annular rotating plate (32). A pelletizing plate (34) is slidably disposed on the annular rotating plate (32), and the pelletizing plate (34) is used to cut off the rod-shaped biomass fuel extruded from the die hole (22); An adjustment section is located in the built-in groove (33) and is used to adjust the distance between the pelletizing plate (34) and the ring die (21).

8. A biomass fuel pellet forming machine according to claim 7, characterized in that, The adjustment unit includes: The sliding block (35) is located in the built-in groove (33) and is slidably connected to the annular rotating plate (32). The surface of the sliding block (35) near the granulation plate (34) is fixedly connected to the granulation plate (34). An electric push rod (36) is located in the built-in groove (33) and is electrically connected to the control device (3). The electric push rod (36) is fixedly connected to the annular rotating plate (32). The electric push rod (36) is used to push the sliding block (35) to slide in the built-in groove (33). An internal spring (37) is located in the internal groove (33), and the internal spring (37) is always in a compressed state.

9. A biomass fuel pellet forming machine according to claim 8, characterized in that, The surfaces of the bearing plate (29) and the support plate (6) near the annular support plate are each provided with multiple sets of evenly distributed balls (38).

10. A biomass fuel pellet forming machine according to claim 9, characterized in that, The fixed gear (26) is fixedly provided with a material distribution block (39) on the surface away from the base (1) for distributing material between the connecting plates (25).

Images