A biomass pelletizing device

Abstract

The invention relates to the technical field of biomass raw material granulation, and discloses a biomass pelletizing device, comprising a workbench, a pelletizing box is fixedly installed just above the workbench, a plurality of pelletizing apertures 1 are opened on one side of the pelletizing box, a plurality of pelletizing apertures 2 are opened on one side of the pelletizing box, an extrusion plate is symmetrically slidably connected at the center of the pelletizing box, an extrusion mechanism is arranged on the top of the extrusion plate, the extrusion mechanism is used to drive the two extrusion plates to approach or move away from each other, scraping components are arranged on both sides of the pelletizing box, the scraping components are used to scrape off the raw materials adhered to the outer walls of the pelletizing apertures 1 and 2, and columnar pellets of two diameters can be simultaneously produced by the extrusion mechanism and the scraping mechanism, and in the pelletizing process, the scraping component can be driven to scrape off the adhered raw material powder, thereby improving the diversity of pelletizing and avoiding the blockage of the channel caused by the adhesion of the raw material powder.

Description

Technical Field

[0001] The invention belongs to the technical field of biomass raw material pelletizing, and specifically relates to a biomass pelletizing device. Background Art

[0002] Biomass pelletizing is the process of crushing, drying and mixing biomass raw materials (such as crop straw, wood chips, rice husks, corn cobs, etc.), and then compressing them into granules through a pelletizer. The granulated biomass pellets have the advantages of high density, high calorific value, good combustion performance, etc., and are a renewable energy source.

[0003] In the existing device, when granulating, the raw material powder enters the granulating box and is squeezed out of the cylindrical hole to form a column. After the column is formed, the column is cut into columnar particles by a cutting device. Since the raw material powder is sticky, it will adhere to the outer wall of the cylindrical hole, accumulate and pile up on the outer wall of the cylindrical hole, resulting in blockage of the hole, hindering the normal flow of the raw material and the granulation process, and also causing waste of raw material powder.

[0004] To this end: the present invention provides a biomass pelletizing device. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art: solve at least one technical problem raised in the background technology.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a biomass pelletizing device described in the present invention comprises a workbench, a pelletizing box is fixedly installed directly above the workbench, a plurality of pelletizing apertures 1 are opened on one side of the pelletizing box, a plurality of pelletizing apertures 2 are opened on one side of the pelletizing box, the aperture diameter of the pelletizing aperture 1 is smaller than the aperture diameter of the pelletizing aperture 2, an extrusion plate is symmetrically slidably connected at the center of the pelletizing box, the two extrusion plates are fitted together on the sides close to each other, an extrusion mechanism is arranged on the top of the extrusion plate, the extrusion mechanism is used to drive the two extrusion plates to approach or move away from each other, scraping assemblies are arranged on both sides of the pelletizing box, the scraping assemblies are used to scrape off the raw materials adhered to the outer walls of the pelletizing apertures 1 and 2, and external suction assemblies are arranged on both sides of the pelletizing box, the suction assemblies are used to collect the scraped raw materials.

[0007] Preferably, a connecting platform is fixedly connected directly above the two extrusion plates, an internal threaded part is fixedly connected to the top of the two connecting platforms, a bidirectional threaded rod is threadedly connected to the inner walls of the two internal threaded parts, and a motor is fixedly connected to one side of the bidirectional threaded rod.

[0008] Preferably, a support frame is fixedly installed just above the workbench, the motor is fixedly installed on the inner side of the support frame, the bottom of the granulation box is symmetrically fixedly connected with clamping members, the inner walls of the two clamping members are rotatably connected to the outer wall of the bidirectional threaded rod, the top of the granulation box is symmetrically fixedly connected with a fixed seat, the inner walls of the two fixed seats are provided with sliding grooves, the outer walls of both sides of the two extrusion plates are fixedly connected with sliding rods, and the sliding rods are slidably connected to the sliding grooves and are adapted to each other.

[0009] Preferably, crushing blocks are fixedly connected to the outer sides of the two extrusion plates.

[0010] Preferably, the scraper assembly includes two scrapers, and the two scrapers are respectively attached to the outer walls on both sides of the granulation box, and the two sides of the granulation box are symmetrically fixedly connected with mounting seats, and the inner walls of the plurality of mounting seats are slidably connected with movable rods, one side of every two movable rods is fixedly connected to the two sides of the scraper, and the outer walls of the plurality of movable rods are fixedly connected with limiting rings, and the tops of the plurality of movable rods are fixedly connected with tension ropes, and the ends of the plurality of tension ropes away from the movable rods are fixedly connected with connecting rods, and a connecting assembly is provided on the top of the extrusion plate, and the connecting assembly is used to drive the scraper to rise.

[0011] Preferably, the connecting assembly includes a plurality of double-axis clamping seats, and the plurality of double-axis clamping seats are fixedly mounted on the top of the connecting platform, the inner walls of the plurality of double-axis clamping seats are rotatably connected to rotating rods, the outer walls of the plurality of rotating rods are symmetrically fixedly connected to hooks, and a reset assembly is provided on one side of the double-axis clamping seat, and the reset assembly is used to drive the scraper to move downward.

[0012] Preferably, a limiting rod is fixedly connected between the inner walls of the plurality of dual-axis clamping seats, and the limiting rod is in contact with the outer wall of the hook.

[0013] Preferably, the reset assembly includes two connecting plates, both of which are fixedly mounted on the outer wall of the granulation box, and the bottoms of the two connecting plates are fixedly connected to a rack plate, and the outer walls of the plurality of rotating rods are fixedly connected to a gear, and the teeth of the gear are meshed with the teeth of the rack plate.

[0014] Preferably, the outer wall of each tension rope is transmission connected to a movable pulley, the outer wall of the movable pulley is rotatably connected to a clamping wheel member, the clamping wheel member is fixedly installed on the outer side of the pelletizing box, the top of the pelletizing box is fixedly connected to a perforated plate table, the tension rope passes through the holes of the perforated plate table, and the outer wall of the connecting rod is fitted with one side of the perforated plate table.

[0015] Preferably, a collecting box is symmetrically arranged on the top of the workbench, a feeding bin is arranged on the top of the supporting frame, a plurality of feeding pipes are fixedly connected to the outer wall of the feeding bin, and the openings of the plurality of feeding pipes are respectively located directly above the granulation box.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. A biomass pellet making device described in the present invention: through the extrusion mechanism and the scraping mechanism, it is possible to simultaneously produce columnar pellets of two diameters, and during the pelletizing process, it can drive the scraping component to scrape off the adhered raw material powder, thereby improving the diversity of pelletizing and avoiding the blockage of the channel caused by the adhesion of the raw material powder.

[0018] 2. A biomass pelletizing device described in the present invention: through the connecting mechanism and the resetting mechanism, after the extrusion is completed, the hook will hook the outer wall of the connecting rod, and when the extrusion plate is reset and moved, the hook will drive the connecting rod to move, thereby driving the scraper to move upward to achieve the effect of scraping materials, and when the extrusion plate is reset, the hook can lose the hooking relationship with the connecting rod, and due to the gravity of the scraper, the scraper can move downward to achieve reset, avoiding the scraper blocking the pelletizing outlet during the descent process when the extrusion plate is extruding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is an overall stereogram of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the bidirectional threaded rod in the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the scraper in the present invention;

[0023] Figure 4 It is a structural schematic diagram of the granulation box in the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the connecting platform in the present invention;

[0025] Figure 6 It is a structural schematic diagram of the tension rope in the present invention;

[0026] Figure 7 The present invention Figure 6 A magnified view of the structure at center;

[0027] Figure 8 It is a structural schematic diagram of the hook in the present invention.

[0028] In the figure: 1. workbench; 2. granulation box; 3. granulation aperture one; 4. granulation aperture two; 5. extrusion plate; 6. crushing block; 7. fixed seat; 8. slide groove; 9. slide rod; 10. connecting table; 11. internal threaded part; 12. two-way threaded rod; 13. support frame; 14. motor; 15. clamping part; 16. mounting seat; 17. movable rod; 18. limiting ring; 19. tension rope; 20. clamping wheel part; 21. movable pulley; 22. orifice plate table; 23. connecting rod; 24. scraper; 25. double-axis clamping seat; 26. rotating rod; 27. hook; 28. limiting rod; 29. ​​gear; 30. rack plate; 31. connecting plate; 32. collecting box; 33. unloading bin; 34. unloading pipe. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand: the present invention is further explained below in conjunction with specific implementation methods.

[0030] like Figures 1 to 8 As shown, the present invention provides a technical solution: a biomass pelletizing device, comprising a workbench 1, a pelletizing box 2 is fixedly installed directly above the workbench 1, a plurality of pelletizing apertures 1 3 are opened on one side of the pelletizing box 2, a plurality of pelletizing apertures 2 4 are opened on one side of the pelletizing box 2, the aperture diameter of the pelletizing aperture 1 3 is smaller than the aperture diameter of the pelletizing aperture 2 4, an extrusion plate 5 is symmetrically slidably connected at the center of the pelletizing box 2, the two extrusion plates 5 are fitted on the sides close to each other, an extrusion mechanism is arranged on the top of the extrusion plate 5, the extrusion mechanism is used to drive the two extrusion plates 5 to approach or move away from each other, scraping assemblies are arranged on both sides of the pelletizing box 2, the scraping assemblies are used to scrape off the raw materials adhered to the outer walls of the pelletizing apertures 1 3 and 2 4, and external suction assemblies are arranged on both sides of the pelletizing box 2, the suction assemblies are used to collect the scraped raw materials.

[0031] During operation: During granulation, the existing device squeezes the raw material powder from the cylindrical hole into a column after the raw material powder enters the granulation box, and the raw material powder has adhesiveness and will adhere to the outer wall of the cylindrical hole. The raw material powder may accumulate and pile up on the outer wall of the cylindrical hole due to its adhesiveness, resulting in blockage of the channel, hindering the normal flow of the raw material and the granulation process, and also causing waste of the raw material powder. Through the embodiment of the present scheme, during specific use, the granulation box 2 can be divided into two warehouse bodies by two squeezing plates 5, and the two warehouse bodies are filled with raw material powder, and then the squeezing mechanism is started to move the two squeezing plates 5 away from each other. During the extrusion process, the raw material powder will start to discharge through the granulation aperture 1 3 and the granulation aperture 2 4 on both sides of the granulation box 2, and the raw material powder will be squeezed into a column. Since the aperture sizes of the granulation aperture 1 3 and the granulation aperture 2 4 are different, the diameters of the columns formed on both sides are different. After the column is formed, The external cutting component cuts the columnar material into columnar particles. After granulation is completed, the two extrusion plates 5 are moved close to each other through the extrusion mechanism. When the two extrusion plates 5 are moving close to each other, the two extrusion plates 5 will drive the scraper component to start moving upward to scrape off the raw material powder adhering to the outer walls of the granulation aperture 1 3 and the granulation aperture 2 4, and the scraped raw material powder is collected by the external suction component, and when the two extrusion plates 5 are reset and attached together, the scraper component can be automatically reset to avoid the scraper component from falling and affecting the granulation work when the two extrusion plates 5 are extruded, and the reset scraper component can still move up for scraping when the extrusion plates 5 are reset next time. Through the above embodiment, it is achieved that columnar particles of two diameters can be made at the same time, the granulation efficiency and granulation diversity are improved, and during the granulation process, the scraper component can be driven to scrape off the adhering raw material powder, avoiding the blockage of the channel caused by the adhesion of the raw material powder.

[0032] like Figure 1 to Figure 2 As shown, a connecting platform 10 is fixedly connected directly above the two extrusion plates 5, an internal threaded member 11 is fixedly connected to the top of the two connecting platforms 10, a bidirectional threaded rod 12 is threadedly connected to the inner walls of the two internal threaded members 11, and a motor 14 is fixedly connected to one side of the bidirectional threaded rod 12.

[0033] During operation: start the motor 14, and its output shaft will drive the bidirectional threaded rod 12 to rotate. When the bidirectional threaded rod 12 rotates, it will drive the two internal threaded parts 11 to move away from each other, and the internal threaded parts 11 will drive the two extrusion plates 5 to move away from each other through the connecting platform 10. During the movement, the extrusion plates 5 will extrude the two raw material powders in the interior of the granulation box 2 toward the granulation aperture 1 3 and the granulation aperture 2 4 respectively. During the extrusion process, the raw material powder will be made into columnar pellets through the granulation aperture 1 3 and the granulation aperture 2 4 respectively. When the two extrusion plates 5 move to the inner side of the granulation aperture 1 3 and the granulation aperture 2 4 respectively, the extrusion granulation is completed. At this time, by starting the motor 14, the two extrusion plates 5 are moved closer to each other. Through the above embodiment, the effect of being able to simultaneously produce pellets of two diameters is achieved.

[0034] like Figures 3 to 5 As shown, a support frame 13 is fixedly installed just above the workbench 1, and a motor 14 is fixedly installed on the inner side of the support frame 13. A clamping piece 15 is symmetrically fixedly connected to the bottom of the granulation box 2. The inner walls of the two clamping pieces 15 are rotatably connected to the outer wall of the bidirectional threaded rod 12. A fixed seat 7 is symmetrically fixedly connected to the top of the granulation box 2. The inner walls of the two fixed seats 7 are both provided with sliding grooves 8. The outer walls of both sides of the two extrusion plates 5 are fixedly connected with sliding rods 9. The sliding rods 9 are slidably connected to the sliding grooves 8 and are adapted to each other.

[0035] During operation: When the extrusion plate 5 is in the extrusion process, the sliding groove 8 and the sliding rod 9 cooperate with each other to move, so that the extrusion plate 5 is more stable during the extrusion movement process, the bidirectional threaded rod 12 is fixed in position by the clamping member 15, and the motor 14 is fixed in position by the support frame 13.

[0036] like Figures 3 to 5 As shown, crushing blocks 6 are fixedly connected to the outer sides of the two squeezing plates 5 .

[0037] During operation: during the extrusion process, the crushing block 6 can crush the raw material powder to prevent the raw material powder entering the granulating box 2 from being adhered to form blocks, thereby ensuring the uniformity and quality consistency of the granules.

[0038] like Figure 6 to Figure 7As shown, the scraper assembly includes two scrapers 24, and the two scrapers 24 are respectively attached to the outer walls on both sides of the granulation box 2, and the two sides of the granulation box 2 are symmetrically fixedly connected with mounting seats 16, and the inner walls of multiple mounting seats 16 are slidably connected with movable rods 17, one side of every two movable rods 17 is fixedly connected to the two sides of the scraper 24, and the outer walls of multiple movable rods 17 are fixedly connected to limit rings 18, and the tops of multiple movable rods 17 are fixedly connected with tension ropes 19, and the ends of multiple tension ropes 19 away from the movable rods 17 are fixedly connected with connecting rods 23, and a connecting assembly is arranged on the top of the extrusion plate 5, and the connecting assembly is used to drive the scraper 24 to rise.

[0039] During operation: after the two extrusion plates 5 have completed extrusion granulation, the two extrusion plates 5 will respectively fit the inner sides of the granulation aperture 1 3 and the granulation aperture 2 4, and at this time, the connecting assembly will hook the connecting rod 23. During the resetting process of the two extrusion plates 5, the connecting rod 23 will use the tension rope 19 and the movable rod 17 to make the two scrapers 24 fitted on the bottom outer walls of the granulation aperture 1 3 and the granulation aperture 2 4 move upward. During the upward movement, the two scrapers 24 will scrape off the raw material powder adhered to the outer walls of the granulation aperture 1 3 and the granulation aperture 2 4, and through the mounting seat 16 and the limiting ring 18, the two scrapers 24 can always fit the outer walls of the granulation aperture 1 3 and the granulation aperture 2 4 during the rising process. Through the above embodiment, the effect of cleaning the raw material powder adhered to the outer walls of the granulation aperture 1 3 and the granulation aperture 2 4 is achieved, and the blockage of the channel caused by the adhesion of the raw material powder is avoided.

[0040] like Figure 6 to Figure 7 As shown, the connecting assembly includes a plurality of double-axis clamping seats 25, and the plurality of double-axis clamping seats 25 are fixedly mounted on the top of the connecting platform 10. The inner walls of the plurality of double-axis clamping seats 25 are rotatably connected to rotating rods 26, and the outer walls of the plurality of rotating rods 26 are symmetrically fixedly connected to hooks 27. A reset assembly is provided on one side of the double-axis clamping seat 25, and the reset assembly is used to drive the scraper 24 to move downward.

[0041] During operation: after the two extrusion plates 5 have completed extrusion granulation, before the two extrusion plates 5 are about to fit the inner sides of the granulation aperture 1 3 and the granulation aperture 2 4, the hook 27 will first touch the connecting rod 23, and the connecting rod 23 will squeeze the position of the hook 27, so that the hook 27 will rotate upward by a certain angle. After the extrusion is completed, the hook 27 will hook the outer wall of the connecting rod 23. When the extrusion plates 5 are reset and moved, the hook 27 will drive the connecting rod 23 to move, thereby driving the scraper 24 to move upward. Through the above embodiment, the effect of the scraper 24 moving upward to scrape the material is achieved.

[0042] like Figures 6 to 8 As shown, a limit rod 28 is fixedly connected between the inner walls of the plurality of dual-axis clamping seats 25 , and the limit rod 28 is in contact with the outer wall of the hook 27 .

[0043] During operation: the limit rod 28 is used to make the hook 27 always fit with the outer wall of the limit rod 28 in a natural state due to the effect of gravity. In this way, after the hook 27 hooks the connecting rod 23, it will not rotate downward, so the hook 27 can achieve the effect of driving the connecting rod 23 to move.

[0044] like Figures 6 to 8 As shown, the reset assembly includes two connecting plates 31, and the two connecting plates 31 are fixedly installed on the outer wall of the granulation box 2. The bottoms of the two connecting plates 31 are fixedly connected to the rack plates 30, and the outer walls of the multiple rotating rods 26 are fixedly connected to the gears 29, and the teeth of the gears 29 are meshed with the teeth of the rack plates 30.

[0045] During operation: when the extrusion plate 5 is reset, the scraper 24 will move up to scrape the material. When the scraper 24 finishes scraping, the teeth of the gear 29 will mesh with the teeth of the rack plate 30. Therefore, the gear 29 will drive the hook 27 to rotate a little through the rotating rod 26. At this time, the hook 27 can lose the hook connection with the connecting rod 23, and due to the gravity of the scraper 24, the scraper 24 can move down to reset, avoiding the scraper 24 from blocking the granulation outlet during the descending process when the extrusion plate 5 is extruding.

[0046] like Figure 6 to Figure 7 As shown, the outer wall of each tension rope 19 is transmission-connected with a movable pulley 21, and the outer wall of the movable pulley 21 is rotationally connected with a clamping wheel member 20, which is fixedly installed on the outer side of the granulation box 2, and the top of the granulation box 2 is fixedly connected with a perforated plate platform 22, and the tension rope 19 passes through the holes of the perforated plate platform 22, and the outer wall of the connecting rod 23 fits with one side of the perforated plate platform 22.

[0047] During operation: the force direction of the pulling rope 19 is changed through the movable pulley 21, and the pulling rope 19 can pull the scraper 24 more stably, and the pulling rope 19 will not be separated from the transmission relationship with the movable pulley 21 through the perforated plate table 22. After the scraper 24 is reset under the action of gravity, the connecting rod 23 can fit tightly on the outer wall of the perforated plate table 22, so that the next hook 27 can continue to be hooked with the connecting rod 23, so that the scraper 24 can be driven to scrape the material after each extrusion granulation.

[0048] like Figure 1 to Figure 2 As shown, a collecting box 32 is symmetrically arranged on the top of the workbench 1, a feeding bin 33 is arranged on the top of the supporting frame 13, and a plurality of feeding pipes 34 are fixedly connected to the outer wall of the feeding bin 33, and the openings of the plurality of feeding pipes 34 are respectively located directly above the granulation box 2.

[0049] During operation: the raw material powder can be injected into the interior of the granulation box 2 through the discharge bin 33 and the discharge pipe 34, and the columnar material particles after granulation are collected through the collection box 32.

[0050] Working process: First, the raw material powder is injected into the interior of the granulating box 2 through the discharge bin 33 and the discharge pipe 34. The two extrusion plates 5 can divide the granulating box 2 into two bins. After the two bins are filled with raw material powder, the motor 14 is started, and its output shaft drives the bidirectional threaded rod 12 to rotate. When the bidirectional threaded rod 12 rotates, it drives the two internal threaded parts 11 to move away from each other, and the internal threaded parts 11 drive the two extrusion plates 5 to move away from each other through the connecting platform 10. During the movement, the extrusion plates 5 will The raw powders at two locations inside the pellet box 2 are respectively extruded toward pelletizing aperture 1 3 and pelletizing aperture 2 4. During the extrusion process, the raw powders are formed into columnar pellets through pelletizing aperture 1 3 and pelletizing aperture 2 4. Since the aperture sizes of pelletizing aperture 1 3 and pelletizing aperture 2 4 are different, the diameters of the columns formed on both sides are different. When the two extrusion plates 5 are respectively moved to the inner sides of pelletizing aperture 1 3 and pelletizing aperture 2 4, the extrusion granulation is completed, and the columnar material pellets after granulation are collected through the collecting box 32.

[0051] Secondly, after the two extrusion plates 5 have completed extrusion granulation, before the two extrusion plates 5 are about to fit the inner sides of the granulation aperture 1 3 and the granulation aperture 2 4, the hook 27 will first touch the connecting rod 23, and the connecting rod 23 will squeeze the position of the hook 27, so that the hook 27 will rotate upward by a certain angle. After the extrusion is completed, the hook 27 will hook the outer wall of the connecting rod 23. When the extrusion plate 5 is reset and moved, the hook 27 will drive the connecting rod 23 to move, thereby driving the scraper 24 to move upward. During the resetting process of the two extrusion plates 5, the connecting rod 23 will move the two scrapers 24 that are attached to the bottom outer walls of the granulating aperture 13 and the granulating aperture 24 upward through the tension rope 19 and the movable rod 17. The two scrapers 24 will scrape off the raw material powder adhered to the outer walls of the granulating aperture 13 and the granulating aperture 24 during the upward movement, and through the mounting seat 16 and the limiting ring 18, the two scrapers 24 can always be in contact with the outer walls of the granulating aperture 13 and the granulating aperture 24 during the rising process.

[0052] Then, during the scraping process, the limit rod 28 is used to make the hook 27 always fit with the outer wall of the limit rod 28 in a natural state due to the effect of gravity. In this way, after the hook 27 hooks the connecting rod 23, it will not rotate downward, so the hook 27 can achieve the effect of driving the connecting rod 23 to move. When the extrusion plate 5 is reset, the scraper 24 will move up to scrape the material. When the scraper 24 finishes scraping, the teeth of the gear 29 will mesh with the teeth of the rack plate 30. Therefore, the gear 29 will drive the hook 27 to rotate a little angle through the rotating rod 26. At this time, the hook 27 can lose the hooking relationship with the connecting rod 23, and due to the gravity of the scraper 24, the scraper 24 can move downward to achieve reset, avoiding the scraper 24 blocking the granulation outlet during the descending process when the extrusion plate 5 is extruding.

[0053] Finally, the force direction of the tension rope 19 is changed through the movable pulley 21, and the tension rope 19 can pull the scraper 24 more stably, and the tension rope 19 will not be separated from the transmission relationship with the movable pulley 21 through the perforated plate table 22. After the scraper 24 is reset under the action of gravity, the connecting rod 23 can fit tightly on the outer wall of the perforated plate table 22, so that the next time the hook 27 can continue to be hooked with the connecting rod 23, so that the scraper 24 can be driven to scrape the material after each extrusion granulation.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and improvements. These changes and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A biomass pelletizing device, comprising a workbench (1), characterized in that: A granulation box (2) is fixedly installed directly above the workbench (1), and a plurality of granulation apertures 1 (3) are provided on one side of the granulation box (2), and a plurality of granulation apertures 2 (4) are provided on one side of the granulation box (2), wherein the aperture diameter of the granulation aperture 1 (3) is smaller than the aperture diameter of the granulation aperture 2 (4), and an extrusion plate (5) is symmetrically slidably connected at the center of the granulation box (2), and the two extrusion plates (5) are in contact with each other on their sides, and an extrusion mechanism is provided on the top of the extrusion plate (5), and the extrusion mechanism is used to drive the two extrusion plates (5) to move closer to or away from each other, and scraping assemblies are provided on both sides of the granulation box (2), and the scraping assemblies are used to scrape off the raw materials adhered to the outer walls of the granulation apertures 1 (3) and the granulation apertures 2 (4), and external suction assemblies are provided on both sides of the granulation box (2), and the suction assemblies are used to collect the scraped raw materials; The scraper assembly comprises two scrapers (24), the two scrapers (24) are respectively attached to the outer walls of the two sides of the granulation box (2), the two sides of the granulation box (2) are symmetrically fixedly connected with mounting seats (16), the inner walls of the plurality of mounting seats (16) are slidably connected with movable rods (17), one side of each two movable rods (17) is fixedly connected to the two sides of the scraper (24), the outer walls of the plurality of movable rods (17) are fixedly connected with limiting rings (18), the tops of the plurality of movable rods (17) are fixedly connected with tension ropes (19), the ends of the plurality of tension ropes (19) away from the movable rods (17) are fixedly connected with connecting rods (23), and a connecting assembly is arranged on the top of the extrusion plate (5), the connecting assembly is used to drive the scraper (24) to rise; The connecting assembly comprises a plurality of double-axis clamping seats (25), the plurality of double-axis clamping seats (25) are fixedly mounted on the top of the connecting platform (10), the inner walls of the plurality of double-axis clamping seats (25) are rotatably connected to a rotating rod (26), the outer walls of the plurality of rotating rods (26) are symmetrically fixedly connected to a hook (27), and a reset assembly is provided on one side of the double-axis clamping seat (25), the reset assembly is used to drive the scraper (24) to move downward; A limiting rod (28) is fixedly connected between the inner walls of the plurality of dual-axis clamping seats (25), and the limiting rod (28) is in contact with the outer wall of the hook (27); The reset assembly comprises two connecting plates (31), the two connecting plates (31) are fixedly mounted on the outer wall of the pelletizing box (2), the bottoms of the two connecting plates (31) are fixedly connected to a rack plate (30), the outer walls of the plurality of rotating rods (26) are fixedly connected to a gear (29), and the teeth of the gear (29) mesh with the teeth of the rack plate (30); The outer wall of each tension rope (19) is transmission-connected to a movable pulley (21), the outer wall of the movable pulley (21) is rotationally connected to a clamping wheel member (20), the clamping wheel member (20) is fixedly mounted on the outer side of the pelletizing box (2), the top of the pelletizing box (2) is fixedly connected to a perforated plate platform (22), the tension rope (19) passes through the hole of the perforated plate platform (22), and the outer wall of the connecting rod (23) is in contact with one side of the perforated plate platform (22).

2. A biomass pelletizing device according to claim 1, characterized in that: A connecting platform (10) is fixedly connected directly above the two extrusion plates (5), an internal threaded member (11) is fixedly connected to the top of the two connecting platforms (10), a bidirectional threaded rod (12) is threadedly connected to the inner walls of the two internal threaded members (11), and a motor (14) is fixedly connected to one side of the bidirectional threaded rod (12).

3. A biomass pelletizing device according to claim 2, characterized in that: A support frame (13) is fixedly installed directly above the workbench (1), and the motor (14) is fixedly installed on the inner side of the support frame (13). A clamping member (15) is symmetrically fixedly connected to the bottom of the granulating box (2), and the inner walls of the two clamping members (15) are rotatably connected to the outer wall of the bidirectional threaded rod (12). A fixed seat (7) is symmetrically fixedly connected to the top of the granulating box (2), and the inner walls of the two fixed seats (7) are both provided with a slide groove (8). The outer walls of both sides of the two extrusion plates (5) are fixedly connected to a slide rod (9), and the slide rod (9) and the slide groove (8) are slidably connected and adapted to each other.

4. A biomass pelletizing device according to claim 1, characterized in that: Crushing blocks (6) are fixedly connected to the outer sides of the two squeezing plates (5).

5. A biomass pelletizing device according to claim 3, characterized in that: A collecting box (32) is symmetrically arranged on the top of the workbench (1), a material discharge bin (33) is arranged on the top of the support frame (13), a plurality of material discharge pipes (34) are fixedly connected to the outer wall of the material discharge bin (33), and the openings of the plurality of material discharge pipes (34) are respectively located directly above the granulation box (2).

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