A biomass briquette production system
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 马鞍山永强节能技术股份有限公司
- Filing Date
- 2026-04-30
- Publication Date
- 2026-06-19
Smart Images
Figure CN122230601A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of solid clean fuel production equipment technology, specifically a biomass briquette fuel production system. Background Technology
[0002] Biomass briquettes, simply put, are solid clean fuels that are produced by processing biomass raw materials such as straw, sawdust, and rice husks through a production system involving crushing, drying, and high-pressure compression. The high-pressure compression process in the biomass briquette production system is often achieved by rolling pellets using pellet forming equipment.
[0003] The existing pelleting equipment uses the relative rotation of the pressure roller and the die to force the crushed biomass raw material into the die hole to achieve self-adhesion and continuously extrude to form solid pellet fuel. During the pelleting process, it is necessary to keep the crushed biomass raw material evenly supplied. However, in the existing technology, there is a hopper connected to the top of the pelleting equipment. The hopper can temporarily buffer the input biomass powder. The biomass powder in the hopper then falls into the pelleting equipment under the action of gravity, thereby ensuring that the feeding of the pelleting equipment is stable and uniform.
[0004] However, the shortcomings of this solution are that, since the crushed biomass raw materials for pelleting generally need to maintain a moisture content of about 15% to 20%, in actual use, the powder in the hopper is prone to "bridging" during the process of entering the pellet forming equipment. The biomass powder cannot continuously and stably enter the pellet forming equipment, which in turn affects the stability and uniformity of the feed to the pellet forming equipment and is not conducive to the forming quality of biomass fuel. Therefore, we propose a new technical solution to improve the above problems. Summary of the Invention
[0005] The purpose of this invention is to provide a biomass briquette fuel production system to overcome the shortcomings of the prior art.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] A biomass briquette fuel production system includes a main body of a pellet forming device. A storage cylinder is fixedly connected to the feed inlet at the top of the main body. A square column is fixed coaxially with the drive shaft of the main body inside the storage cylinder. A sliding sleeve is adapted to slide on the square column. Multiple pressure rollers are rotatably mounted on the side of the sliding sleeve. Each pressure roller can rotate by being driven by the main body through the square column. The pressure rollers can continuously squeeze and push the biomass powder in the storage cylinder toward the main body.
[0008] Preferably, the pressure roller includes a shaft that is fixed perpendicularly to the side of the sliding sleeve, and a rotating roller is rotatably mounted on the shaft.
[0009] Preferably, the side of the sliding sleeve is fixed with an inclined shovel parallel to the rotating roller. The inclined shovel can scrape off the adhering material on the rotating roller and level the biomass powder surface at the front end of the rotating roller.
[0010] Preferably, a buffer cylinder is rotatably installed on the top of the storage cylinder, and the bottom of the buffer cylinder is a double-discharge hopper. Each discharge port of the double-discharge hopper is fixed with an extension pipe, and each extension pipe is fitted with an auger rod. When the auger rod rotates, the biomass powder in the buffer cylinder is replenished into the storage cylinder.
[0011] Preferably, a limiting sleeve fixed to the storage cylinder is movably sleeved on the outside of the buffer cylinder, a plurality of first support wheels that contact the top of the storage cylinder are installed at the bottom of the buffer cylinder, a plurality of second support wheels that contact the outer wall of the storage cylinder are installed on the inner wall of the limiting sleeve, and the buffer cylinder is capable of axial rotation relative to the storage cylinder.
[0012] Preferably, the top end of the auger rod extends through the top of the buffer cylinder, and the top of the buffer cylinder is provided with a gear fixed concentrically with the auger rod. The inner wall of the limiting sleeve is fixed with a toothed ring that meshes with the gear. When the buffer cylinder rotates axially, the auger rod transports the biomass powder in the buffer cylinder to the storage cylinder.
[0013] Preferably, the first support wheel includes a wheel column fixed to the bottom end of the buffer cylinder, and a roller is movably installed at the bottom end of the wheel column. An auxiliary plate is provided at the bottom of the buffer cylinder, and the auxiliary plate has notches adapted to each material outlet end of the double-discharge hopper. The side of the auxiliary plate is fixed to the corresponding wheel column to enhance the stability of each material outlet end of the double-discharge hopper.
[0014] Preferably, the auxiliary plate has an opening in the middle for the square column to pass through, a protruding block is fixed on the inner wall of the opening, and a telescopic component is installed on the square column. When the telescopic component is in the extended state, the square column can drive the buffer cylinder to rotate synchronously axially.
[0015] Preferably, the telescopic assembly includes a cylindrical cavity located within a square column, with an arm hinged within the cylindrical cavity. A first opening is provided on the top side of the cylindrical cavity, and a second opening is provided on the bottom side of the cylindrical cavity, which is on the same straight line as the first opening. A first wedge-shaped piece fixed to one end of the arm is provided inside the first opening, and a second wedge-shaped piece fixed to the other end of the arm is provided inside the second opening. When the first wedge-shaped piece contacts the protruding block, the telescopic assembly is in an extended state.
[0016] Preferably, the bottom end of the second wedge-shaped piece is provided with multiple notches and grooves.
[0017] In the above technical solution, the present invention provides a biomass briquette production system. By setting pressure rollers in the storage cylinder, the weight of the pressure rollers can continuously push the biomass powder in the storage cylinder toward the main body, thereby helping to eliminate the "bridging" phenomenon of biomass powder in the storage cylinder, ensuring that the biomass powder can continuously and stably enter the pellet forming equipment, and helping to maintain the forming quality of biomass fuel in a good and stable state. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.
[0019] Figure 1 This is a schematic diagram of the square column on the main body of a biomass briquette fuel production system according to the present invention.
[0020] Figure 2 This is a schematic cross-sectional view of the storage cylinder of a biomass briquette fuel production system according to the present invention;
[0021] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle.
[0022] Explanation of reference numerals in the attached figures:
[0023] 1. Body; 2. Storage cylinder; 3. Square column; 4. Sliding sleeve; 5. Pressure roller; 5.1. Shaft; 5.2. Rotating roller; 5.3. Inclined shovel; 6. Buffer cylinder; 7. Double discharge hopper; 8. Extension pipe; 9. Screw rod; 10. Limiting sleeve; 11. First support wheel; 11.1. Wheel column; 11.2. Roller; 12. Gear; 13. Gear ring; 14. Auxiliary plate; 15. Notch; 16. Through port; 17. Protruding block; 18. Telescopic assembly; 18.1. Cylindrical cavity; 18.2. Arm; 18.3. First slot; 18.4. Second slot; 18.5. First wedge; 18.6. Second wedge; 19. Notch groove; 20. Second support wheel; 21. Feed pipe. Detailed Implementation
[0024] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.
[0025] Please see Figures 1-3The present invention provides a biomass briquette fuel production system, including a pellet forming equipment body 1. A storage cylinder 2 is fixedly connected to the feed inlet on the upper part of the body 1. A square column 3 is fixed coaxially with the drive shaft of the body 1 inside the storage cylinder 2. A sliding sleeve 4 is adapted to slide on the square column 3. Multiple pressure rollers 5 are rotatably installed on the side of the sliding sleeve 4. Each pressure roller 5 can rotate by being driven by the body 1 through the square column 3. The pressure rollers 5 can continuously squeeze and push the biomass powder in the storage cylinder 2 toward the body 1.
[0026] Specifically, the main body 1 of the pellet forming equipment is the existing ring die pellet mill, which includes an annular die cavity and a roller located in the die cavity. The roller rolls along the inner wall of the annular die under the action of the drive shaft. Its pelleting principle is existing technology and will not be described in detail. The storage cylinder 2 is a cylindrical tube structure with open ends. The outer contour cross-section of the square column 3 is rectangular. The axis of the square column 3 coincides with the axis of the storage cylinder 2. The middle part of the sliding sleeve 4 has a rectangular opening that is compatible with the square column 3. The axis of the pressure roller 5 is perpendicular to the axis of the square column 3.
[0027] In practical use, the storage cylinder 2 is filled with biomass powder. The pressure roller 5 and the sliding sleeve 4 are both located above the powder. The gravity of the pressure roller 5 and the sliding sleeve 4 can continuously push the biomass powder in the storage cylinder 2 toward the body 1. Moreover, the square column 3 can rotate synchronously with the drive shaft of the body 1. Therefore, the pressure roller 5 can achieve uniform circumferential rolling on the top of the biomass powder. All positions on the top surface of the storage cylinder 2 can be subjected to extrusion pressure, which helps to eliminate the "bridging" phenomenon of biomass powder in the storage cylinder, ensuring that the biomass powder can continuously and stably enter the pellet forming equipment, which is conducive to maintaining the forming quality of biomass fuel in a good and stable state.
[0028] In another embodiment of the present invention, the pressure roller 5 includes a shaft 5.1 that is fixed perpendicularly to the side of the sliding sleeve 4, and a rotating roller 5.2 is rotatably mounted on the shaft 5.1. The rotating roller 5.2 has a circular cross-section.
[0029] In another embodiment of the present invention, the outer contour cross-section of the rotating roller 5.2 is elliptical. During the process of uniform circumferential rolling of the top of the biomass powder, the rotating roller 5.2 has a certain amplitude of jumping on the vertical plane, which further increases the downward vibration of the biomass powder and further helps to eliminate the "bridging" phenomenon of the biomass powder in the storage cylinder.
[0030] In another embodiment of the present invention, a slanted shovel 5.3 parallel to the rotating roller 5.2 is fixed on the side of the sliding sleeve 4. The angle between the slanted shovel 5.3 and the horizontal plane is 45 degrees. The slanted shovel 5.3 is located on one side of the forward direction of the rotating roller 5.2. There is a gap space between the slanted shovel 5.3 and the biomass powder. The lower edge of the slanted shovel 5.3 is lower than the axis of the rotating roller 5.2. The slanted shovel 5.3 can scrape off the adhering material on the rotating roller 5.2 and level the biomass powder surface at the forward end of the rotating roller 5.2. When the rotating roller 5.2 rolls above the biomass powder surface in actual use, and a pile of powder appears on the biomass powder surface that is higher than the axis of the rotating roller 5.2, the slanted shovel 5.3 can level the pile of powder, ensuring that the rotating roller 5.2 can roll normally on the biomass powder surface.
[0031] In another embodiment of the present invention, a buffer cylinder 6 is rotatably installed on the top of the storage cylinder 2. The bottom end of the buffer cylinder 6 is a double-outlet hopper 7. The biomass powder inside the buffer cylinder 6 is discharged downward through the double-outlet hopper 7. Each outlet end of the double-outlet hopper 7 is fixed with an extension pipe 8. The axis of the extension pipe 8 is perpendicular to the horizontal plane. Each extension pipe 8 is fitted with an auger rod 9. When the auger rod 9 rotates, the biomass powder in the buffer cylinder 6 is replenished into the storage cylinder 2.
[0032] In another embodiment of the present invention, a limiting sleeve 10 fixed to the storage cylinder 2 is movably sleeved on the outside of the buffer cylinder 6. The top height of the limiting sleeve 10 is higher than the top height of the buffer cylinder 6. A plurality of first support wheels 11 that contact the top of the storage cylinder 2 are installed at the bottom of the buffer cylinder 6. A plurality of second support wheels 20 that contact the outer wall of the storage cylinder 2 are installed on the inner wall of the limiting sleeve 10. The buffer cylinder 6 is capable of axial rotation relative to the storage cylinder 2.
[0033] Furthermore, the top of the auger rod 9 extends through the top of the buffer cylinder 6. The top of the buffer cylinder 6 is provided with a gear 12 that is fixed concentrically with the auger rod 9. The wheel surface of the gear 12 is parallel to the horizontal plane. The inner wall of the limiting sleeve 10 is fixed with a toothed ring 13 that meshes with the gear 12. When the buffer cylinder 6 rotates axially, the auger rod 9 transports the biomass powder in the buffer cylinder 6 to the storage cylinder 2.
[0034] The first support wheel 11 includes a wheel post 11.1 fixed to the bottom end of the buffer cylinder 6. The axis of the wheel post 11.1 is parallel to the axis of the buffer cylinder 6. A roller 11.2 is movably installed at the bottom end of the wheel post 11.1. An auxiliary plate 14 is provided at the bottom of the buffer cylinder 6. The auxiliary plate 14 has notches 15 that are adapted to the material outlets of the double-discharge hopper 7. The material outlets of the double-discharge hopper 7 are fixedly inserted through the notches 15. The side of the auxiliary plate 14 is fixed to the corresponding wheel post 11.1 to enhance the stability of the material outlets of the double-discharge hopper 7.
[0035] Furthermore, the auxiliary plate 14 has a through opening 16 in the middle for the square column 3 to pass through. A protruding block 17 is fixed on the inner wall of the through opening 16. A telescopic component 18 is installed on the square column 3. When the telescopic component 18 is in the extended state, the square column 3 can drive the buffer cylinder 6 to rotate synchronously axially.
[0036] Specifically, the telescopic assembly 18 includes a cylindrical cavity 18.1 located within the square column 3. The axis of the cylindrical cavity 18.1 coincides with the axis of the square column 3. An arm 18.2 is hinged within the cylindrical cavity 18.1, with the hinge point located at the middle of the arm 18.2. A first opening 18.3 is provided on the top side of the cylindrical cavity 18.1, and a second opening 18.4, colinear with the first opening 18.3, is provided on the bottom side of the cylindrical cavity 18.1. Both the first opening 18.3 and the second opening 18.4 are elongated openings, and their length directions are parallel to the length direction of the square column 3. A first wedge-shaped piece 18.5, fixed to one end of the arm 18.2, is provided within the first opening 18.3, and a second wedge-shaped piece 18.6, fixed to the other end of the arm 18.2, is provided within the second opening 18.4. The inclined direction of the inclined portion of the first wedge 18.5 is opposite to the inclined direction of the inclined portion of the second wedge 18.6. When the first wedge 18.5 contacts the protruding block 17, the telescopic assembly 18 is in the extended state.
[0037] Furthermore, a feed pipe 21 is inserted into the middle of the top of the buffer cylinder 6. The feed pipe 21 and the buffer cylinder 6 are rotatably connected to avoid the buffer cylinder 6 from affecting the feed pipe 21 when it rotates axially. In the initial state, the buffer cylinder 6 is filled with biomass powder, and the storage cylinder 2 also contains biomass powder. The rotating roller 5.2 is located between the first wedge 18.5 and the second wedge 18.6.
[0038] In actual use, as the main body 1 operates, it consumes the biomass powder in the storage cylinder 2. During this process, the rotating roller 5.2 also rolls normally on the surface of the biomass powder. The rotating roller 5.2 begins to descend from its vertical height position in the storage cylinder 2, moving closer to the location of the second wedge 18.6. When the sliding sleeve 4 of the rotating roller 5.2 contacts the second wedge 18.6, the sliding sleeve 4 slides relative to the inclined surface of the second wedge 18.6, causing the second wedge 18.6 to be squeezed and retract towards the inside of the second opening 18.4. During this process, the first wedge 18.5 located at the upper end of the arm 18.2 extends out from the first opening 18.3. As the square column 3 rotates, the protruding block 17 is located on the trajectory line of the first wedge 18.5, allowing the first wedge 18.5 to contact the protruding block 17. This allows the square column 3 to drive the buffer cylinder 6 to rotate synchronously in the axial direction;
[0039] Furthermore, during the axial rotation of the buffer cylinder 6, the auger rod 9 meshes with the gear ring 13 on the inner wall of the limiting sleeve 10 via the gear 12. Therefore, the auger rod 9 also rotates relative to the buffer cylinder 6. During this rotation, the biomass powder in the buffer cylinder 6 enters the storage cylinder 2 through the extension pipe 8. It should be noted that during this process, because the extension pipe 8 rotates relative to the storage cylinder 2 along with the buffer cylinder 6, the biomass powder is also evenly spread within the storage cylinder 2, facilitating the rolling action of the rotating roller 5.2. As the amount of biomass powder increases, the rotating roller 5.2 moves vertically towards the position of the first wedge 18.5 within the storage cylinder 2.
[0040] When the sliding sleeve 4 of the rotating roller 5.2 comes into contact with the first wedge 18.5, the sliding sleeve 4 slides relative to the inclined surface of the first wedge 18.5, thereby causing the first wedge 18.5 to be squeezed and retract toward the inside of the first opening 18.3. The first wedge 18.5 can separate from the protruding block 17. During this process, the second wedge 18.6 located at the lower end of the arm 18.2 extends out from the second opening 18.4.
[0041] At this time, the buffer cylinder 6 stops rotating axially, and the extension pipe 8 also stops feeding material into the storage cylinder 2. As the main body 1 runs, it consumes the biomass powder in the storage cylinder 2. During this process, the rotating roller 5.2 also rolls normally on the surface of the biomass powder, and the height position of the rotating roller 5.2 in the vertical direction of the storage cylinder 2 begins to decrease until the sliding sleeve 4 of the rotating roller 5.2 contacts the second wedge 18.6. At this time, the buffer cylinder 6 resumes axial rotation, and the extension pipe 8 continues to feed material into the storage cylinder 2, thereby continuing to replenish the biomass powder in the storage cylinder 2.
[0042] In short, throughout the process, the rotating roller 5.2 continuously rotates and presses within the storage cylinder 2, ensuring that biomass powder can continuously and stably enter the body 1 of the pellet forming equipment. This helps maintain the good and stable quality of the biomass fuel. On the other hand, by adding a rotating buffer cylinder 6 above the storage cylinder 2, the automatic feeding can be started and stopped according to the consumption of biomass powder in the storage cylinder 2. This helps to prevent excessive accumulation of biomass powder from affecting the normal operation of the body 1. The biomass powder accumulated in the feeding area of the body 1 is within an appropriate accumulation weight range, preventing excessive weight accumulation of biomass powder from affecting the normal extrusion and forming operation of the body 1.
[0043] In another embodiment of the present invention, the bottom end of the second wedge 18.6 is provided with a plurality of notches 19. The length direction of the notches 19 is perpendicular to the horizontal plane. In actual use, when the sliding sleeve 4 contacts and presses against the first wedge 18.5, the second wedge 18.6 located at the lower end of the arm 18.2 extends out from the second opening 18.4. During the extension process, the second wedge 18.6 is covered by biomass powder, and some biomass powder will enter into the notches 19, thereby limiting the biomass powder on the second wedge 18.6 and preventing the second wedge 18.6 from retracting into the second opening 18.4, which in turn helps to prevent the first wedge 18.5 from extending out of the first opening 18.3.
[0044] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A biomass pellet fuel production system, comprising a pellet forming device body (1), wherein a storage cylinder (2) is fixedly connected to a feed inlet at the top of the body (1), characterized in that, The storage cylinder (2) is provided with a square column (3) that is coaxially fixed with the drive shaft of the main body (1). A sliding sleeve (4) is adapted to slide on the square column (3). Multiple pressure rollers (5) are rotatably installed on the side of the sliding sleeve (4). Each pressure roller (5) can rotate by being driven by the main body (1) through the square column (3). The pressure roller (5) can continuously squeeze the biomass powder in the storage cylinder (2) toward the main body (1).
2. The biomass briquette fuel production system according to claim 1, characterized in that, The pressure roller (5) includes a shaft (5.1) that is fixed perpendicularly to the side of the sliding sleeve (4), and a rotating roller (5.2) is rotatably mounted on the shaft (5.1).
3. The biomass briquette fuel production system according to claim 2, characterized in that, The sliding sleeve (4) has a slanted shovel (5.3) that is parallel to the rotating roller (5.2) fixed on its side. The slanted shovel (5.3) can scrape off the adhering material on the rotating roller (5.2) and can level the biomass powder surface at the front end of the rotating roller (5.2).
4. The biomass briquette fuel production system according to claim 1, characterized in that, A buffer cylinder (6) is rotatably installed on the top of the storage cylinder (2). The bottom end of the buffer cylinder (6) is a double-outlet hopper (7). Each outlet end of the double-outlet hopper (7) is fixed with an extension pipe (8). Each extension pipe (8) is fitted with an auger rod (9). When the auger rod (9) rotates, the biomass powder in the buffer cylinder (6) is replenished into the storage cylinder (2).
5. A biomass briquette fuel production system according to claim 4, characterized in that, The buffer cylinder (6) is movably sleeved with a limiting sleeve (10) fixed to the storage cylinder (2). The bottom end of the buffer cylinder (6) is equipped with a plurality of first support wheels (11) that contact the top of the storage cylinder (2). The inner wall of the limiting sleeve (10) is equipped with a plurality of second support wheels (20) that contact the outer wall of the storage cylinder (2). The buffer cylinder (6) is capable of axial rotation relative to the storage cylinder (2).
6. A biomass briquette fuel production system according to claim 5, characterized in that, The top of the auger rod (9) extends through the top of the buffer cylinder (6). The top of the buffer cylinder (6) is provided with a gear (12) that is concentrically fixed with the auger rod (9). The inner wall of the limiting sleeve (10) is fixed with a toothed ring (13) that meshes with the gear (12). When the buffer cylinder (6) rotates axially, the auger rod (9) transports the biomass powder in the buffer cylinder (6) to the storage cylinder (2).
7. A biomass briquette fuel production system according to claim 5, characterized in that, The first support wheel (11) includes a wheel post (11.1) fixed to the bottom end of the buffer cylinder (6). A roller (11.2) is movably installed at the bottom end of the wheel post (11.1). An auxiliary plate (14) is provided at the bottom of the buffer cylinder (6). A notch (15) is provided on the auxiliary plate (14) to match the material outlet ends of the double-discharge hopper (7). The side of the auxiliary plate (14) is fixed to the corresponding wheel post (11.1) to enhance the stability of the material outlet ends of the double-discharge hopper (7).
8. A biomass briquette fuel production system according to claim 7, characterized in that, The auxiliary plate (14) has a through opening (16) in the middle for the square column (3) to pass through. A protruding block (17) is fixed on the inner wall of the through opening (16). A telescopic component (18) is installed on the square column (3). When the telescopic component (18) is in the extended state, the square column (3) can drive the buffer cylinder (6) to rotate synchronously in the axial direction.
9. A biomass briquette fuel production system according to claim 8, characterized in that, The telescopic assembly (18) includes a cylindrical cavity (18.1) located inside the square column (3). An arm (18.2) is hinged inside the cylindrical cavity (18.1). A first opening (18.3) is provided on the top side of the cylindrical cavity (18.1). A second opening (18.4) is provided on the bottom side of the cylindrical cavity (18.1) and is on the same straight line as the first opening (18.3). A first wedge (18.5) is provided inside the first opening (18.3) and fixed to one end of the arm (18.2). A second wedge (18.6) is provided inside the second opening (18.4) and fixed to the other end of the arm (18.2). When the first wedge (18.5) contacts the protruding block (17), the telescopic assembly (18) is in the extended state.
10. A biomass briquette fuel production system according to claim 9, characterized in that, The second wedge-shaped piece (18.6) has multiple notches (19) at the bottom end of its body.