Biomass fuel production and processing equipment

Abstract

The present application relates to the technical field of biomass fuel processing, and provides a biomass fuel production and processing device. The device comprises a frame assembly, a screening assembly, a crushing assembly, a plurality of spiral conveyors, an extrusion and sorting assembly, and two extrusion assemblies. The device can act on the primary crushed material in the form of extrusion and kneading, and integrates the drying air flow channel in the upper and lower reciprocating extrusion plates, so that the drying and cooling air flow can be directly sprayed to the kneading and crushing area through the upper and lower reciprocating extrusion plates, realizing "kneading and crushing while drying". Meanwhile, the primary crushing, kneading and crushing, and extrusion and crushing processes are arranged, and the main drying in the kneading section and the secondary drying in the extrusion section are configured. The multi-stage processing synergizes to simultaneously achieve complete removal of impurities, uniform and controllable product particle size, and stable moisture content.

Description

Technical Field

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

[0002] With the rapid development of resource utilization of agricultural and forestry waste, the preparation of briquettes from biomass raw materials such as stalks and wood has become an important way to supply clean energy. Biomass fuel processing requires multiple steps, including impurity removal, crushing, and drying. The operating efficiency and processing precision of the processing equipment directly determine the calorific value stability and combustion performance of the finished fuel.

[0003] Currently, existing biomass fuel production and processing equipment generally adopts a layout with separate processes. Screening, crushing, and drying are each independently set up and connected by conveyor systems. This results in a long overall processing flow, large equipment footprint, and high energy and labor costs. Because raw materials such as strawberry and wood fibers are highly resilient, they easily entangle and clog screen pores, leading to decreased impurity removal efficiency. Furthermore, after crushing, biomass fibers easily entangle and form agglomerates. Existing impact-type dispersing devices have a single function and cannot effectively break up fiber agglomerates, resulting in poor particle size uniformity in the finished product. Agglomerated material also hinders the penetration of drying airflow, exacerbating the problem of insufficient drying. In addition, the drying process often uses independent static drying chambers. With materials piled up, the contact area with airflow is limited, leading to uneven drying from the surface to the interior and low drying efficiency. The separate processes further increase equipment energy consumption, not only restricting production efficiency and product quality but also increasing the risk of equipment failure and maintenance costs. Summary of the Invention

[0004] Therefore, it is necessary to provide a biomass fuel production and processing equipment to solve at least one of the technical problems in the background art.

[0005] A biomass fuel production and processing equipment includes a frame assembly, a screening assembly, a crushing assembly, multiple screw conveyors, an extrusion and sorting assembly, and two extrusion assemblies. The frame assembly includes a base frame, a screening inclined frame, a crushing shell, an extrusion frame, a screening discharge box, a sorting lifting shell, and an external hopper. The screening inclined frame, crushing shell, and extrusion frame are spaced apart on the top of the base frame along its length. A material lifting frame is installed at the top of the outer end of the screening inclined frame. An extrusion plate is installed at the bottom of the extrusion frame, with extrusion discharge grooves recessed on both sides of the extrusion plate. The screening discharge box is installed at one end of the base frame, positioned directly below the screening inclined frame. The sorting lifting shell is installed on top of the extrusion frame. The external hopper is slidably mounted... Mounted at the other end of the base frame, the top of the inner end of the sorting and lifting housing is recessed with multiple spiral discharge holes at intervals along the width direction. The bottom ends of the sorting and lifting housing are recessed with sorting discharge holes, and the bottom ends of the sorting and lifting housing are recessed with rotary vibrating screen holes. The four corners of the outer end of the sorting and lifting housing are recessed with external air inlets. The screening assembly is installed in the screening inclined frame, the crushing assembly is installed in the crushing housing, and the bottoms of multiple spiral conveyors are spaced apart along the width direction at the bottom of the crushing assembly away from the screening inclined frame. The tops of the multiple spiral conveyors are respectively installed in multiple spiral discharge holes. The extrusion sorting assembly is installed in the sorting and lifting housing, and the bottoms of the two extrusion assemblies are respectively installed in two extrusion discharge troughs.

[0006] As a further improvement of the present invention, the screening assembly includes a liquid pump, a screening motor, three screening shafts, a feeding hopper, and a drum screening element. The liquid pump is installed on the top of the outer end of the screening tilting frame, the screening motor is installed on the bottom of the screening tilting frame, the three screening shafts are respectively installed on the top of the inner end of the screening tilting frame in a circumferential direction, and the inner ends of the three screening shafts and the output shaft of the screening motor are all fitted with transmission belts to achieve transmission connection. The feeding hopper is installed on the top of the feeding lifting frame, and the outer end of the drum screening element is installed on the inner end of the feeding lifting frame.

[0007] As a further improvement of the present invention, the drum screening element includes a screen feed cylinder, a screen fixing frame, two fixed spiral screens and an outer rotating cylinder. The outer end of the screen feed cylinder is installed on the inner end of the feeding and lifting frame, and the outer end of the screen fixing frame is installed on the inner end of the screen feed cylinder. Multiple material feeding teeth are respectively provided on both sides of the inner wall of the screen fixing frame along the length direction. The two fixed spiral screens are respectively installed on the inner wall of the screen fixing frame along the circumferential direction. The inner wall of the outer rotating cylinder is rotatably installed on the outer wall of the screen fixing frame. Rotating steel rings are respectively protruded at both ends of the outer wall of the outer rotating cylinder. The outer walls of the two rotating steel rings are respectively rotatably attached to the outer walls of the three screening shafts. A liquid pump is provided at the top of the pump, and the liquid pump is inclinedly arranged in the cavity inside the screen fixing frame.

[0008] As a further improvement of the present invention, the extrusion sorting assembly includes a fixed outer frame, a reciprocating drive motor, a reciprocating extrusion element, and a rotary extrusion element. The fixed outer frame is inclinedly installed on the top of the sorting lifting housing. The outer end of the fixed outer frame is recessed with four internal air inlets, which are respectively arranged opposite to the four external air inlets. The inner end of the fixed outer frame is recessed with a preset groove. The reciprocating drive motor is installed on one side of the outer end of the fixed outer frame. A drive gear is provided on the output shaft of the reciprocating drive motor. The two sides of the reciprocating extrusion element are slidably installed on both sides of the fixed outer frame. The rotary extrusion element is rotatably installed in two rotary vibrating screen holes.

[0009] As a further improvement of the present invention, the reciprocating extrusion element includes an upper reciprocating extrusion plate, an upper rack, a lower reciprocating extrusion plate, and a lower rack. The upper reciprocating extrusion plate is obliquely slidably mounted on the top of both sides of the fixed outer frame. The inner side of the upper rack is mounted on the outer side of the upper reciprocating extrusion plate, and the upper rack is meshed with a drive gear. The lower reciprocating extrusion plate is obliquely slidably mounted on the bottom of both sides of the fixed outer frame. The inner side of the lower rack is mounted on the outer side of the lower reciprocating extrusion plate, and the lower rack is meshed with a drive gear.

[0010] As a further improvement of the present invention, the top surfaces of the upper reciprocating extrusion plate and the lower reciprocating extrusion plate are recessed with multiple extrusion grooves along the length direction. Each extrusion groove is provided with an elastic spray frame. The outer edges of the upper reciprocating extrusion plate and the lower reciprocating extrusion plate are recessed with a cuboid annular groove. The two sides of the outer end of the cuboid annular groove are respectively recessed with docking holes. The two docking holes are respectively connected to the external air inlet through elastic hoses. The inner wall of the cuboid annular groove is recessed with multiple connecting holes, and the multiple connecting holes are all connected to the internal cavity of the elastic spray frame.

[0011] As a further improvement of the present invention, the rotary extrusion element includes a rotary extrusion motor and a rotary extrusion roller. The rotary extrusion motor is installed at the bottom of the outer end of the sorting and lifting housing, and the two ends of the rotary extrusion roller are respectively rotatably installed in the holes of the rotary vibrating screen, and one end of the rotary extrusion roller is connected to the output shaft of the rotary extrusion motor.

[0012] As a further improvement of the present invention, each extrusion assembly includes an extrusion motor, an extrusion housing, an extrusion feed pipe, an extrusion transmission element, and an extrusion element. The extrusion motor is installed on one side of the extrusion plate, the bottom of the extrusion housing is installed in the extrusion discharge groove, the extrusion housing is hollow inside to form an extrusion cavity, the bottom of the extrusion cavity is recessed with a main discharge groove, the outer middle of the main discharge groove is recessed with an extrusion feed hole, the inner middle of the main discharge groove is recessed with an extrusion transmission hole, the bottom of the extrusion feed pipe is installed in the extrusion feed hole, the top of the extrusion feed pipe is connected to the sorting discharge hole, the extrusion transmission element is installed in the extrusion transmission hole, and the extrusion element is connected to the extrusion transmission element and located in the extrusion cavity.

[0013] As a further improvement of the present invention, the extrusion transmission element includes an extrusion transmission outer cylinder, a transmission shaft, and three drying jet pipes. The outer side of the extrusion transmission outer cylinder is installed in the extrusion transmission hole. The middle part of the transmission shaft is rotatably installed on the inner wall of the extrusion transmission outer cylinder. An air inlet hole is recessed in the middle of the outer wall of the transmission shaft. Inclined air delivery holes are recessed at the top and bottom of the inner side of the outer wall of the transmission shaft. A transmission wheel is provided on the outer side of the transmission shaft. A second transmission belt is sleeved on the transmission wheel and the output shaft of the extrusion motor to achieve transmission connection. Both inclined air delivery holes are connected to the air inlet hole. The three drying jet pipes are all installed on the outer wall of the extrusion transmission outer cylinder and are connected to the internal cavity of the extrusion transmission outer cylinder.

[0014] As a further improvement of the present invention, the extrusion element includes a fixed inverted conical tube, a fixed disk, a sliding tube, a synchronous turntable, and multiple extrusion pushers. The inner side of the fixed inverted conical tube is installed in the extrusion feed hole, the inner wall of the fixed disk is installed on the outer side of the outer wall of the fixed inverted conical tube, and the side wall of the fixed disk is circumferentially arranged with multiple particle holes. The inner wall of the sliding tube is slidably installed on the inner side of the outer wall of the drive shaft along the length direction, the inner wall of the synchronous turntable is installed on the outer wall of the sliding tube, and the multiple extrusion pushers are respectively installed on the inner side of the synchronous turntable in a circumferential array.

[0015] The beneficial effects of this invention are as follows: 1. The screening component in this case utilizes the propulsive action of the spiral strips on the inner wall of the outer rotating drum, combined with the coordinated combing of the fixed spiral screen and multiple material-dispersing teeth, to create a spiral tumbling screening path for the biomass fuel entering the drum. Impurities such as sand and dust can be continuously discharged through the impurity discharge trough on the inner wall of the outer rotating drum, ensuring thorough impurity removal. Furthermore, the synchronously installed liquid spray pipes can suppress dust pollution during the screening process, improve the working environment, and promote the rapid falling and unloading of materials, preventing materials from adhering to the screen surface, thus significantly improving the operational stability and processing efficiency of the screening process.

[0016] 2. This design uses a squeezing and kneading method on the material after primary crushing, which can efficiently break up the sticky clumps formed by the entanglement of biomass fibers. This ensures the uniformity of the finished product particle size and avoids material loss caused by over-crushing. At the same time, the drying airflow channel is integrated into the upper and lower reciprocating extrusion plates, so that the drying and cooling airflow can be directly sprayed into the kneading operation area through the upper and lower reciprocating extrusion plates, realizing "kneading and drying at the same time". During the dynamic process of continuous rolling and loosening of the material, it is ensured that the drying airflow is in full contact with the material, avoiding the problem of the material surface being dry while the inside is damp and the drying uniformity is poor.

[0017] 3. This project sets up a three-stage crushing process: primary crushing, kneading and agglomeration, and extrusion fine crushing. At the same time, it is equipped with a two-stage drying process: a kneading stage for main drying and an extrusion stage for secondary drying. The multi-stage treatment works synergistically to achieve complete removal of impurities, uniform and controllable particle size of finished product, and stable moisture content that meets the standards. In the secondary extrusion fine crushing stage, the sliding tube and synchronous turntable can reciprocate along the drive shaft axis. Relying on the dynamic balance of pneumatic force and material pressure, the crushing operation gap can be automatically adjusted. There is no need to set up additional drive devices and detection elements. It can adapt to the fluctuation of feed rate and avoid material accumulation, blockage and jamming caused by the fluctuation of feed rate. This significantly improves the operational stability of the fine crushing process and its adaptability to different feeding conditions. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the present invention.

[0019] Figure 2 This is a perspective view of another embodiment of the present invention.

[0020] Figure 3 This is a three-dimensional schematic diagram of the screening tilting frame and screening components in one embodiment of the present invention.

[0021] Figure 4 This is an exploded view of a drum screening element in one embodiment of the present invention.

[0022] Figure 5 This is an internal fracture view according to an embodiment of the present invention.

[0023] Figure 6 This is an internal fracture view according to another embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram of the internal structure of the frame assembly after the screening tilting frame has been removed, according to one embodiment of the present invention.

[0025] Figure 8 This is a three-dimensional schematic diagram of an extrusion sorting component according to an embodiment of the present invention.

[0026] Figure 9 This is a three-dimensional schematic diagram of the extrusion assembly in one embodiment of the present invention.

[0027] Figure 10 This is a schematic diagram of the internal structure of the extrusion assembly in one embodiment of the present invention.

[0028] In the picture: 10. Frame assembly; 11. Base frame; 12. Screening tilting frame; 121. Feeding and lifting frame; 13. Crushing shell; 14. Extrusion frame; 141. Extrusion plate; 142. Extrusion discharge trough; 15. Screening discharge box; 16. Sorting and lifting shell; 161. Spiral discharge hole; 162. Sorting discharge hole; 163. Rotary vibrating screen hole; 164. External air inlet; 17. External suction hopper; 20. Screening assembly; 21. Liquid pump; 211. Liquid spraying device. 22. Screening motor; 23. Screening shaft; 24. Feed hopper; 25. Drum screening element; 251. Screen feed cylinder; 252. Screen fixing frame; 253. Fixed spiral screen; 254. Outer rotating cylinder; 255. Discharge teeth; 256. Rotating steel ring; 30. Crushing assembly; 40. Screw conveyor; 50. Extrusion sorting assembly; 51. Fixed outer frame; 511. Inner air inlet; 512. Preset groove; 52. Reciprocating drive motor; 521. Drive gear; 53. Reciprocating extrusion element; 531. Upper reciprocating extrusion plate; 532. Upper rack; 533. Lower reciprocating extrusion plate; 534. Lower rack; 535. Extrusion groove; 536. Elastic feeding frame; 54. Rotary extrusion element; 542. Rotary extrusion motor; 543. Rotary extrusion roller; 60. Extrusion assembly; 61. Extrusion motor; 62. Extrusion shell; 621. Extrusion cavity; 622. Main discharge chute; 623. 624. Extrusion feed hole; 63. Extrusion feed pipe; 64. Extrusion transmission element; 641. Extrusion transmission outer cylinder; 642. Transmission shaft; 643. Drying jet pipe; 644. Air inlet and exhaust hole; 645. Inclined air delivery hole; 646. Transmission wheel; 65. Extrusion element; 651. Fixed inverted cone tube; 652. Fixed disc; 653. Sliding tube; 654. Synchronous turntable; 655. Extrusion pusher; 656. Particle hole. Detailed Implementation

[0029] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0030] In the description of this invention, it should be noted 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.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] Please see Figures 1 to 10 A biomass fuel production and processing equipment includes a frame assembly 10, a screening assembly 20, a crushing assembly 30, multiple screw conveyors 40, an extrusion and sorting assembly 50, and two extrusion assemblies 60. The frame assembly 10 includes a base frame 11, a screening inclined frame 12, a crushing shell 13, an extrusion frame 14, a screening discharge box 15, a sorting lifting shell 16, and an external hopper 17. The screening inclined frame 12, the crushing shell 13, and the extrusion frame 14 are installed at intervals along the length of the top of the base frame 11. A material lifting frame 121 is provided at the top of the outer end of the screening inclined frame 12. An extrusion plate 141 is provided at the bottom of the extrusion frame 14, and extrusion discharge grooves 142 are recessed on both sides of the extrusion plate 141. The screening discharge box 15 is installed at one end of the base frame 11, with the screening discharge box 15 located directly below the screening inclined frame 12. The sorting lifting shell 16 is installed on the top of the extrusion frame 14. The hopper 17 is slidably installed at the other end of the base frame 11. The top of the inner end of the sorting lifting housing 16 is recessed with a plurality of spiral discharge holes 161 at intervals along the width direction. The bottom ends of the sorting lifting housing 16 are recessed with sorting discharge holes 162 respectively. The bottom ends of the sorting lifting housing 16 are recessed with rotary vibrating screen holes 163 respectively. The four corners of the outer end of the sorting lifting housing 16 are recessed with external air inlets 164 respectively. The screening assembly 20 is installed in the screening inclined frame 12. The crushing assembly 30 is installed in the crushing housing 13. The bottoms of a plurality of spiral conveyors 40 are installed at intervals along the width direction at the end of the bottom of the crushing assembly 30 away from the screening inclined frame 12. The tops of the plurality of spiral conveyors 40 are respectively installed in a plurality of spiral discharge holes 161. The extrusion sorting assembly 50 is installed in the sorting lifting housing 16. The bottoms of two extrusion assemblies 60 are respectively installed in two extrusion discharge troughs 142.

[0033] The screening assembly 20 includes a liquid pump 21, a screening motor 22, three screening shafts 23, a feed hopper 24, and a drum screening element 25. The liquid pump 21 is installed on the top of the outer end of the screening tilting frame 12, the screening motor 22 is installed on the bottom of the screening tilting frame 12, and the three screening shafts 23 are respectively installed on the top of the inner end of the screening tilting frame 12 in a circumferential direction. The inner ends of the three screening shafts 23 and the output shaft of the screening motor 22 are all fitted with transmission belts to achieve transmission connection. The feed hopper 24 is installed on the top of the feed lifting frame 121, and the outer end of the drum screening element 25 is installed on the inner end of the feed lifting frame 121.

[0034] The drum screening element 25 includes a screen feed cylinder 251, a screen fixing frame 252, two fixed spiral screens 253, and an outer rotating cylinder 254. The outer end of the screen feed cylinder 251 is installed on the inner end of the feeding and lifting frame 121, and the outer end of the screen fixing frame 252 is installed on the inner end of the screen feed cylinder 251. Multiple material feeding teeth 255 are respectively provided on both sides of the inner wall of the screen fixing frame 252 along the length direction. The two fixed spiral screens 253 are respectively installed on the inner wall of the screen fixing frame 252 along the circumferential direction. The inner wall of the outer rotating cylinder 254 is rotatably installed on the outer wall of the screen fixing frame 252. Rotating steel rings 256 are respectively protruding from both ends of the outer wall of the outer rotating cylinder 254. The outer walls of the two rotating steel rings 256 are respectively rotatably attached to the outer walls of the three screening shafts 23. A liquid pump 21 is provided with a liquid spray pipe 211 at the top, and the liquid spray pipe 211 is inclinedly arranged in the cavity inside the screen fixing frame 252.

[0035] The extrusion sorting assembly 50 includes a fixed outer frame 51, a reciprocating drive motor 52, a reciprocating extrusion element 53, and a rotary extrusion element 54. The fixed outer frame 51 is inclinedly installed on the top of the sorting lifting housing 16. The outer end of the fixed outer frame 51 is recessed with four internal air inlets 511, which are respectively arranged opposite to four external air inlets 164. The inner end of the fixed outer frame 51 is recessed with a preset groove 512. The reciprocating drive motor 52 is installed on one side of the outer end of the fixed outer frame 51. A drive gear 521 is provided on the output shaft of the reciprocating drive motor 52. The reciprocating extrusion element 53 is slidably installed on both sides of the fixed outer frame 51. The rotary extrusion element 54 is rotatably installed in two rotary vibrating screen holes 163.

[0036] The reciprocating extrusion element 53 includes an upper reciprocating extrusion plate 531, an upper rack 532, a lower reciprocating extrusion plate 533, and a lower rack 534. The upper reciprocating extrusion plate 531 is obliquely and slidably mounted on the top of both sides of the fixed outer frame 51. The inner side of the upper rack 532 is mounted on the outer side of the upper reciprocating extrusion plate 531, and the upper rack 532 is meshed with the drive gear 521. The lower reciprocating extrusion plate 533 is obliquely and slidably mounted on the bottom of both sides of the fixed outer frame 51. The inner side of the lower rack 534 is mounted on the outer side of the lower reciprocating extrusion plate 533, and the lower rack 534 is meshed with the drive gear 521.

[0037] The top surfaces of the upper reciprocating extrusion plate 531 and the lower reciprocating extrusion plate 533 are recessed along the length direction with multiple extrusion grooves 535. Each extrusion groove 535 is provided with an elastic spray frame 536. The outer edges of the upper reciprocating extrusion plate 531 and the lower reciprocating extrusion plate 533 are recessed with a cuboid annular groove. The two sides of the outer end of the cuboid annular groove are respectively recessed with docking holes. The two docking holes are respectively connected to the external air inlet 164 through elastic hoses. The inner wall of the cuboid annular groove is recessed with multiple connecting holes, and the multiple connecting holes are all connected to the internal cavity of the elastic spray frame 536.

[0038] The rotary extrusion element 54 includes a rotary extrusion motor 542 and a rotary extrusion roller 543. The rotary extrusion motor 542 is installed at the bottom of the outer end of the sorting and lifting housing 16. The two ends of the rotary extrusion roller 543 are respectively rotatably installed in the rotary vibrating screen hole 163, and one end of the rotary extrusion roller 543 is connected to the output shaft of the rotary extrusion motor 542.

[0039] Each extrusion assembly 60 includes an extrusion motor 61, an extrusion housing 62, an extrusion feed pipe 63, an extrusion transmission element 64, and an extrusion element 65. The extrusion motor 61 is installed on one side of the extrusion plate 141. The bottom of the extrusion housing 62 is installed in the extrusion discharge trough 142. The extrusion housing 62 is hollow inside to form an extrusion cavity 621. The bottom of the extrusion cavity 621 is recessed with a main discharge trough 622. The outer middle of the main discharge trough 622 is recessed with an extrusion feed hole 623. The inner middle of the main discharge trough 622 is recessed with an extrusion transmission hole 624. The bottom of the extrusion feed pipe 63 is installed in the extrusion feed hole 623. The top of the extrusion feed pipe 63 is connected to the sorting discharge hole 162. The extrusion transmission element 64 is installed in the extrusion transmission hole 624. The extrusion element 65 is connected to the extrusion transmission element 64 and is located in the extrusion cavity 621.

[0040] The extrusion transmission element 64 includes an extrusion transmission outer cylinder 641, a transmission shaft 642, and three drying jet pipes 643. The outer side of the extrusion transmission outer cylinder 641 is installed in the extrusion transmission hole 624. The middle part of the transmission shaft 642 is rotatably installed on the inner wall of the extrusion transmission outer cylinder 641. An air inlet hole 644 is recessed in the middle of the outer wall of the transmission shaft 642. Inclined air delivery holes 645 are recessed at the top and bottom of the inner side of the outer wall of the transmission shaft 642. A transmission wheel 646 is provided on the outer side of the transmission shaft 642. A second transmission belt is sleeved on the transmission wheel 646 and the output shaft of the extrusion motor 61 to achieve transmission connection. Both inclined air delivery holes 645 are connected to the air inlet hole 644. The three drying jet pipes 643 are all installed on the outer wall of the extrusion transmission outer cylinder 641, and all three drying jet pipes 643 are connected to the internal cavity of the extrusion transmission outer cylinder 641.

[0041] The extrusion element 65 includes a fixed inverted conical tube 651, a fixed disk 652, a sliding tube 653, a synchronous turntable 654, and multiple extrusion pushers 655. The inner side of the fixed inverted conical tube 651 is installed in the extrusion feed hole 623. The inner wall of the fixed disk 652 is installed on the outer side of the outer wall of the fixed inverted conical tube 651. The side wall of the fixed disk 652 is circumferentially arrayed with multiple particle holes 656. The inner wall of the sliding tube 653 is slidably installed on the inner side of the outer wall of the drive shaft 642 along the length direction. The inner wall of the synchronous turntable 654 is installed on the outer wall of the sliding tube 653. The multiple extrusion pushers 655 are respectively installed in a circumferential array on the inner side of the synchronous turntable 654.

[0042] For example, in one embodiment: the outer wall of the outer rotating cylinder 254 is provided with a plurality of impurity discharge grooves recessed at intervals along the circumferential direction; the inlet end of the liquid pump 21 is connected to an external cleaning tank through a pipe; the external cleaning tank is filled with cleaning liquid; and the three drying jet pipes 643 and the four external air inlets 164 are all connected to an external drying and cooling air pump through pipes. The inner walls of the plurality of elastic spray frames 536 of the upper reciprocating extrusion plate 531 and the lower reciprocating extrusion plate 533 are provided with a plurality of direct spray holes arranged in an array.

[0043] For example, in one embodiment: when biomass fuels such as bellflower and wood need to be processed, the biomass fuel is fed into the feed hopper 24 and falls into the drum screening element 25. At this time, the liquid pump 21 and the screening motor 22 will start synchronously. The screening motor 22 will drive the three screening shafts 23 to rotate synchronously, thereby driving the outer drum 254 to rotate. Since the inner wall of the outer drum 254 is provided with multiple spiral strips, and the screen fixing frame 252 is provided with two fixed spiral screens 253 and multiple sifting teeth 255, the material entering it is thus... The biomass fuel undergoes a rotary screening process, discharging sand and dust through multiple impurity discharge troughs on the outer rotating drum 254 into the lower screening discharge box 15. Simultaneously, the liquid pump 21 pumps dust-suppressing liquid into the spray pipe 211, causing the spray pipe 211 to spray dust-suppressing mist and enhancing the unloading effect of the biomass fuel. This allows the screened biomass fuel to quickly fall into the lower crushing shell 13. Furthermore, the crushing component 30 and multiple screw conveyors 40 are activated to crush the falling biomass fuel and then pass the crushed biomass fuel through multiple screw conveyors. The conveyor 40 delivers the material into the cavity inside the sorting and lifting housing 16. Simultaneously, the reciprocating drive motor 52 starts, driving the drive gear 521 to rotate reciprocally. This causes the upper and lower spur racks 532 and 534 to move in a reciprocating, alternating motion. This, in turn, causes the upper and lower reciprocating extrusion plates 531 and 533 to move in a linear, alternating, inclined direction. This process alternatingly extrudes the pulverized biomass fuel entering the cavity inside the sorting and lifting housing 16, breaking up any clumps of biomass fuel. Meanwhile, the external drying and cooling system... The air pump will start, delivering dry cooling airflow through pipes to the four external air inlets 164, and through hoses to the two connecting holes of the upper reciprocating extrusion plate 531 and the lower reciprocating extrusion plate 533. Dry cooling airflow will also be sprayed through multiple direct injection holes in the multiple elastic spray frames 536 of the upper and lower reciprocating extrusion plates 531 and 533 via a cuboid annular groove. This accelerates the crushing process of the agglomerated biomass fuel and provides additional dry cooling airflow during the crushing process, rapidly drying the pulverized biomass fuel. Subsequently, the rotary extrusion motor 542 will start, causing the rotary extrusion roller 543 to rotate, quickly feeding the pulverized and dried biomass fuel into the two sorting discharge holes 162 below, and then into the two extrusion assemblies 60.When the pulverized and dried biomass fuel falls into the extrusion feed pipe 63, it is fed along the fixed inverted cone pipe 651 to the space between the fixed plate 652 and the synchronous turntable 654. At the same time, the extrusion motor 61 starts, which drives the transmission shaft 642 to rotate, causing the sliding pipe 653 and the synchronous turntable 654 to rotate as well, and causing the multiple extrusion pushers 655 to rotate as well, thus further pulverizing the pulverized and dried biomass fuel. Meanwhile, the external drying and cooling air pump pumps the drying and cooling airflow through three drying jet pipes 643 into the internal cavity of the extrusion transmission outer cylinder 641, and then into the extrusion chamber 621 through the air inlet vent 644 and two inclined air delivery holes 645 to further dry the pulverized biomass fuel. The dried and pulverized biomass fuel then falls into the lower external extraction hopper 17 through the main discharge chute 622, completing the drying and pulverizing operation of the biomass fuel.

[0044] Furthermore, since the inner side of the inclined air inlet 645 is inclined, the inner wall of the sliding tube 653 is slidably installed on the inner side of the outer wall of the drive shaft 642 along the length direction. When the drying and cooling airflow is sprayed out, it will impact the outer side of the synchronous turntable 654 on the sliding tube 653, causing the synchronous turntable 654 and the sliding tube 653 to move inward. When a large amount of crushed and dried biomass fuel flows out through the fixed inverted cone tube 651, it will push the synchronous turntable 654 and the sliding tube 653 to move outward, thereby causing the synchronous turntable 654 and the sliding tube 653 to reciprocate, so as to prevent the biomass fuel from accumulating when the synchronous turntable 654 and multiple extrusion pushers 655 are rotating and crushing.

[0045] Installation process: The screening tilting frame 12, crushing shell 13, and extrusion frame 14 are installed at intervals along the length of the top of the base frame 11. The screening discharge box 15 is installed at one end of the base frame 11, with the screening discharge box 15 located directly below the screening tilting frame 12. The sorting lifting shell 16 is installed on top of the extrusion frame 14. The outer material extraction hopper 17 is slidably installed at the other end of the base frame 11. The liquid pump 21 is installed on the top of the outer end of the screening tilting frame 12. The screening motor 22 is installed at the bottom of the screening tilting frame 12. The three screening rotating shafts 23 are respectively installed on the top of the inner end of the screening tilting frame 12, rotating in the circumferential direction. The feeding hopper 24 is installed on the top of the feeding lifting frame 121. The outer end of the screen feed cylinder 251 is installed on the inner end of the feeding lifting frame 121. The outer end of the screen fixing frame 252 is installed at the inner end of the screen feeding cylinder 251. Two fixed spiral screens 253 are respectively installed on the inner wall of the screen fixing frame 252 along the circumferential direction. The inner wall of the outer rotating cylinder 254 is rotatably installed on the outer wall of the screen fixing frame 252, and the outer walls of the two rotating steel rings 256 are respectively rotatably attached to the outer walls of the three screening shafts 23. The fixed outer frame 51 is installed at an angle on the top of the sorting lifting housing 16. The reciprocating drive motor 52 is installed on one side of the outer end of the fixed outer frame 51. The upper reciprocating extrusion plate 531 is slidably installed on both sides of the top of the fixed outer frame 51. The inner side of the upper straight rack 532 is installed on the outer side of the upper reciprocating extrusion plate 531, and the upper straight rack 532 is meshed with the drive gear 521. The lower reciprocating... The extrusion plate 533 is slidably mounted on both sides of the bottom of the fixed outer frame 51. The inner side of the lower straight rack 534 is mounted on the outer side of the lower reciprocating extrusion plate 533, and the lower straight rack 534 is meshed with the drive gear 521. The rotary extrusion motor 542 is mounted on the bottom of the outer end of the sorting lifting housing 16. The two ends of the rotary extrusion roller 543 are rotatably mounted in the rotary vibrating screen hole 163, and one end of the rotary extrusion roller 543 is connected to the output shaft of the rotary extrusion motor 542. The extrusion motor 61 is mounted on one side of the extrusion plate 141. The bottom of the extrusion outer shell 62 is mounted in the extrusion discharge trough 142. The bottom of the extrusion feed pipe 63 is mounted in the extrusion feed hole 623. The outer side of the extrusion transmission outer cylinder 641 is mounted in the extrusion transmission hole. In section 624, the drive shaft 642 is rotatably mounted on the inner wall of the extrusion drive outer cylinder 641. Two inclined air inlets 645 are connected to the air inlet duct 644. Three drying jet pipes 643 are mounted on the outer wall of the extrusion drive outer cylinder 641 and are connected to the internal cavity of the extrusion drive outer cylinder 641. The inner side of the fixed inverted cone tube 651 is installed in the extrusion feed hole 623. The inner wall of the fixed plate 652 is installed on the outer side of the outer wall of the fixed inverted cone tube 651. The inner wall of the sliding tube 653 is slidably mounted on the inner side of the outer wall of the drive shaft 642 along the length direction. The inner wall of the synchronous turntable 654 is installed on the outer wall of the sliding tube 653. Multiple extrusion pushers 655 are respectively mounted in a circumferential array on the inner side of the synchronous turntable 654.

[0046] This invention can achieve: 1. The screening component 20 of this invention, through the propulsive action of the spiral strips on the inner wall of the outer rotating drum 254, combined with the coordinated combing of the fixed spiral screen 253 and multiple material sifting teeth 255, makes the biomass fuel entering the drum form a spiral tumbling screening path. Impurities such as sand and dust can be continuously discharged through the impurity discharge trough on the inner wall of the outer rotating drum 254, resulting in thorough impurity removal. The simultaneously installed spray pipe 211 can suppress dust pollution during the screening process, improve the working environment, and promote the rapid falling and unloading of materials, preventing materials from adhering to the screen surface, thus significantly improving the operational stability and processing efficiency of the screening process.

[0047] 2. This invention uses extrusion and kneading to act on the material after primary crushing, which can efficiently break up the sticky clumps formed by the entanglement of biomass fibers. This ensures the uniformity of the finished product particle size and avoids material loss caused by over-crushing. At the same time, the drying airflow channel is integrated into the upper reciprocating extrusion plate 531 and the lower reciprocating extrusion plate 533, so that the drying and cooling airflow can be directly sprayed into the kneading operation area through the upper reciprocating extrusion plate 531 and the lower reciprocating extrusion plate 533, realizing "kneading and drying at the same time". During the dynamic process of continuous rolling and loosening of the material, it is ensured that the drying airflow is in full contact with the material, avoiding the problem of the material surface being dry while the inside is damp and the drying uniformity is poor.

[0048] 3. This design incorporates a three-stage crushing process: primary crushing, kneading and agglomeration, and extrusion fine crushing. Simultaneously, it features a two-stage drying process: a kneading stage for primary drying and an extrusion stage for secondary drying. This multi-stage synergistic effect ensures thorough removal of impurities, uniform and controllable particle size, and stable moisture content. Furthermore, in the secondary extrusion fine crushing stage, the sliding tube 653 and synchronous turntable 654 can reciprocate along the drive shaft 642. Relying on the dynamic balance between pneumatic force and material pressure, the crushing interval can be automatically adjusted. Without the need for additional drive devices and detection elements, it can adapt to fluctuations in the feed rate, avoiding material accumulation, blockages, and other issues caused by feed rate fluctuations. This significantly improves the operational stability of the fine crushing process and its adaptability to different feeding conditions.

[0049] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A biomass fuel production and processing equipment, characterized in that: The assembly includes a frame assembly (10), a screening assembly (20), a crushing assembly (30), multiple screw conveyors (40), an extrusion sorting assembly (50), and two extrusion assemblies (60). The frame assembly (10) includes a base frame (11), a screening tilting frame (12), a crushing shell (13), an extrusion frame (14), a screening discharge box (15), a sorting lifting shell (16), and an external hopper (17). The screening tilting frame (12), the crushing shell (13), and the extrusion frame (14) are arranged along... The screen is installed at intervals along the length of the top of the base frame (11). A material lifting frame (121) is provided at the top of the outer end of the screening tilting frame (12). An extrusion plate (141) is provided at the bottom of the extrusion frame (141). Extrusion discharge grooves (142) are recessed on both sides of the extrusion plate (141). The screening discharge box (15) is installed at one end of the base frame (11) and is located directly below the screening tilting frame (12). The sorting lifting shell (16) is installed on the top of the extrusion frame (14). The hopper (17) is slidably installed at the other end of the base frame (11). The top of the inner end of the sorting lifting shell (16) is provided with a plurality of spiral discharge holes (161) spaced apart along the width direction. The bottom ends of the sorting lifting shell (16) are respectively provided with sorting discharge holes (162). The bottom ends of the sorting lifting shell (16) are respectively provided with rotary vibrating screen holes (163). The four corners of the outer end of the sorting lifting shell (16) are respectively provided with external air inlets (164). The screening assembly (20) is installed on the screening assembly. In the tilting frame (12), the crushing component (30) is installed in the crushing housing (13), and the bottom of multiple screw conveyors (40) is installed at intervals along the width direction at the bottom of the crushing component (30) away from the screening tilting frame (12). The tops of the multiple screw conveyors (40) are respectively installed in multiple screw discharge holes (161). The extrusion sorting component (50) is installed in the sorting lifting housing (16), and the bottoms of the two extrusion components (60) are respectively installed in the two extrusion discharge troughs (142).

2. The biomass fuel production and processing equipment according to claim 1, characterized in that: The screening assembly (20) includes a liquid pump (21), a screening motor (22), three screening shafts (23), a feeding hopper (24), and a drum screening element (25). The liquid pump (21) is installed on the top of the outer end of the screening tilting frame (12), the screening motor (22) is installed on the bottom of the screening tilting frame (12), the three screening shafts (23) are respectively installed on the top of the inner end of the screening tilting frame (12) in a circumferential direction, and the inner ends of the three screening shafts (23) and the output shaft of the screening motor (22) are all fitted with transmission belts to achieve transmission connection. The feeding hopper (24) is installed on the top of the feeding lifting frame (121), and the outer end of the drum screening element (25) is installed on the inner end of the feeding lifting frame (121).

3. The biomass fuel production and processing equipment according to claim 2, characterized in that: The drum screening element (25) includes a screen feed cylinder (251), a screen fixing frame (252), two fixed spiral screens (253), and an outer rotating cylinder (254). The outer end of the screen feed cylinder (251) is installed at the inner end of the feeding and lifting frame (121), and the outer end of the screen fixing frame (252) is installed at the inner end of the screen feed cylinder (251). Multiple material feeding teeth (255) are respectively arranged along the length direction on both sides of the inner wall of the screen fixing frame (252). The two fixed spiral screens (253)... The inner wall of the screen fixing frame (252) is installed along the circumferential direction, and the inner wall of the outer rotating cylinder (254) is rotatably installed on the outer wall of the screen fixing frame (252). The two ends of the outer wall of the outer rotating cylinder (254) are respectively provided with rotating steel rings (256), and the outer walls of the two rotating steel rings (256) are respectively rotatably attached to the outer walls of the three screening shafts (23). The top of the liquid pump (21) is provided with a liquid spraying pipe (211), and the liquid spraying pipe (211) is inclinedly installed in the cavity inside the screen fixing frame (252).

4. The biomass fuel production and processing equipment according to claim 3, characterized in that: The extrusion sorting assembly (50) includes a fixed outer frame (51), a reciprocating drive motor (52), a reciprocating extrusion element (53), and a rotary extrusion element (54). The fixed outer frame (51) is installed at an inclination on the top of the sorting lifting housing (16). The outer end of the fixed outer frame (51) is recessed with four internal air inlets (511), which are respectively arranged opposite to the four external air inlets (164). The inner end of the fixed outer frame (51) is recessed with a preset groove (512). The reciprocating drive motor (52) is installed on one side of the outer end of the fixed outer frame (51). The output shaft of the reciprocating drive motor (52) is provided with a drive gear (521). The reciprocating extrusion element (53) is slidably installed on both sides of the fixed outer frame (51). The rotary extrusion element (54) is rotatably installed in two rotary vibrating screen holes (163).

5. The biomass fuel production and processing equipment according to claim 4, characterized in that: The reciprocating extrusion element (53) includes an upper reciprocating extrusion plate (531), an upper rack (532), a lower reciprocating extrusion plate (533), and a lower rack (534). The upper reciprocating extrusion plate (531) is obliquely slidably mounted on the top of both sides of the fixed outer frame (51). The inner side of the upper rack (532) is mounted on the outer side of the upper reciprocating extrusion plate (531), and the upper rack (532) is meshed with the drive gear (521). The lower reciprocating extrusion plate (533) is obliquely slidably mounted on the bottom of both sides of the fixed outer frame (51). The inner side of the lower rack (534) is mounted on the outer side of the lower reciprocating extrusion plate (533), and the lower rack (534) is meshed with the drive gear (521).

6. The biomass fuel production and processing equipment according to claim 5, characterized in that: The top surfaces of the upper reciprocating extrusion plate (531) and the lower reciprocating extrusion plate (533) are recessed along the length direction with multiple extrusion grooves (535). Each extrusion groove (535) is provided with an elastic spray frame (536). The outer edges of the upper reciprocating extrusion plate (531) and the lower reciprocating extrusion plate (533) are recessed with a cuboid annular groove. The two sides of the outer end of the cuboid annular groove are respectively recessed with docking holes. The two docking holes are respectively connected to the external air inlet (164) through elastic hoses. The inner wall of the cuboid annular groove is recessed with multiple connecting holes. The multiple connecting holes are all connected to the internal cavity of the elastic spray frame (536).

7. The biomass fuel production and processing equipment according to claim 6, characterized in that: The rotary extrusion element (54) includes a rotary extrusion motor (542) and a rotary extrusion roller (543). The rotary extrusion motor (542) is installed at the bottom of the outer end of the sorting lifting housing (16). The two ends of the rotary extrusion roller (543) are respectively rotatably installed in the rotary vibrating screen hole (163), and one end of the rotary extrusion roller (543) is connected to the output shaft of the rotary extrusion motor (542).

8. The biomass fuel production and processing equipment according to claim 7, characterized in that: Each extrusion assembly (60) includes an extrusion motor (61), an extrusion housing (62), an extrusion feed pipe (63), an extrusion transmission element (64), and an extrusion element (65). The extrusion motor (61) is installed on one side of the extrusion plate (141). The bottom of the extrusion housing (62) is installed in the extrusion discharge trough (142). The extrusion housing (62) is hollow inside to form an extrusion cavity (621). The bottom of the extrusion cavity (621) is recessed with a main discharge trough (622). (622) An extrusion feed hole (623) is recessed in the middle of the outer side, and an extrusion transmission hole (624) is recessed in the middle of the inner side of the main discharge trough (622). The bottom of the extrusion feed pipe (63) is installed in the extrusion feed hole (623), and the top of the extrusion feed pipe (63) is connected to the sorting discharge hole (162). The extrusion transmission element (64) is installed in the extrusion transmission hole (624), and the extrusion element (65) is connected to the extrusion transmission element (64) and located in the extrusion cavity (621).

9. The biomass fuel production and processing equipment according to claim 8, characterized in that: The extrusion transmission element (64) includes an extrusion transmission outer cylinder (641), a transmission shaft (642), and three drying jet pipes (643). The outer side of the extrusion transmission outer cylinder (641) is installed in the extrusion transmission hole (624). The middle part of the transmission shaft (642) is rotatably installed on the inner wall of the extrusion transmission outer cylinder (641). An air inlet hole (644) is recessed in the middle of the outer wall of the transmission shaft (642). Inclined air delivery holes are recessed at the top and bottom of the inner side of the outer wall of the transmission shaft (642). (645) A transmission wheel (646) is provided on the outside of the transmission shaft (642). A second transmission belt is sleeved on the output shaft of the extrusion motor (61) to realize the transmission connection. Two inclined air supply holes (645) are connected to the air inlet hole (644). Three drying jet pipes (643) are installed on the outer wall of the extrusion transmission outer cylinder (641), and the three drying jet pipes (643) are connected to the internal cavity of the extrusion transmission outer cylinder (641).

10. The biomass fuel production and processing equipment according to claim 9, characterized in that: The extrusion element (65) includes a fixed inverted conical tube (651), a fixed disk (652), a sliding tube (653), a synchronous turntable (654), and multiple extrusion pushers (655). The inner side of the fixed inverted conical tube (651) is installed in the extrusion feed hole (623). The inner wall of the fixed disk (652) is installed on the outer side of the outer wall of the fixed inverted conical tube (651). The side wall of the fixed disk (652) is circumferentially arrayed with multiple particle holes (656). The inner wall of the sliding tube (653) is slidably installed on the inner side of the outer wall of the drive shaft (642) along the length direction. The inner wall of the synchronous turntable (654) is installed on the outer wall of the sliding tube (653). Multiple extrusion pushers (655) are respectively circumferentially arrayed and installed on the inner side of the synchronous turntable (654).

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