Biomass fuel sectional type stepped combustion device

Abstract

The invention belongs to the field of biomass fuel combustion, and particularly relates to a biomass fuel sectional type stepped combustion device which comprises a combustion furnace, a stepped combustion table is fixedly arranged in the combustion furnace, and two first baffles which are symmetrically distributed front and back are fixedly arranged on the upper portion of each stepped surface of the combustion table; a second baffle is fixedly arranged between the two first baffles located on the leftmost side and close to the left side, and the upper portion of the second baffle is connected with the top wall of the combustion furnace. When biomass fuel is combusted, the biomass fuel can be combusted step by step in a multi-stage mode, so that it is guaranteed that the biomass fuel can be sufficiently combusted in the combustion furnace, and the utilization rate of the biomass fuel is guaranteed; and meanwhile, in the moving process of the biomass fuel, ash generated during combustion can be cleaned in an auxiliary mode, and the problems of insufficient oxygen supply and insufficient combustion caused by ash accumulation are effectively avoided.

Description

Technical Field

[0001] The invention belongs to the field of biomass fuel combustion, and in particular relates to a biomass fuel segmented step combustion device. Background Art

[0002] Biomass fuels are generally agricultural and forestry wastes, such as straw, sawdust, bagasse, rice bran, etc. These materials can be converted into directly combustible fuels through certain processing techniques, such as crushing, drying and granulation. These fuels are low-carbon and environmentally friendly, and are of great significance to environmental protection and sustainable development.

[0003] At present, when biomass fuel is processed, the pre-treated long strip biomass fuel is directly put into the combustion furnace, and then air is supplied to the combustion furnace during the combustion process to ensure the combustion effect of the biomass fuel. However, since the long strips of biomass fuel are stacked in the combustion furnace, the gaps between them are small, which makes the flame and temperature distribution uneven. Some biomass particles are in a lower temperature area at the beginning of combustion, and it is difficult to quickly reach the ignition point, and even the temperature is too low to start combustion, while another part of the fuel may be in a high temperature area, resulting in premature combustion and excessive heat generation. Such temperature fluctuations not only reduce the efficiency of biomass fuel combustion, but also cause some fuels to not be completely burned to produce unburned residues, such as carbon black, coke, etc., reducing the utilization rate of biomass fuel. Summary of the invention

[0004] In view of the above problems, a biomass fuel segmented step combustion device provided in an embodiment of the present application can fully burn the biomass fuel entering into the combustion furnace to improve the utilization rate of the biomass fuel.

[0005] In order to achieve the above-mentioned purpose, the embodiment of the present application provides the following technical solutions: The present invention provides a biomass fuel segmented stepped combustion device, including a combustion furnace, a combustion table in a stepped shape is fixedly arranged inside the combustion furnace, two first baffles symmetrically distributed front and back are fixedly arranged on the upper part of each step surface of the combustion table, a second baffle is fixedly arranged between the two leftmost first baffles and close to the left side, the upper part of the second baffle is connected to the top wall of the combustion furnace, a pushing mechanism for use with the combustion table is arranged on the left side of the combustion furnace, four rectangular cavities are opened in sequence from left to right inside the combustion table, and the four rectangular cavities are reduced in sequence from left to right, and a sealing mechanism for use with the pushing mechanism is arranged together with the rectangular cavity and the combustion table.

[0006] The pushing mechanism includes an electric push rod fixedly arranged on the left upper part of the combustion furnace, a vertical plate fixedly arranged on the left end of the electric push rod, a plurality of cross bars distributed in a linear array fixedly arranged on the right side of the vertical plate, and the lengths of the plurality of cross bars increase sequentially from top to bottom, and a pushing plate is slidably arranged on the upper left end of the rectangular cavity and the interior of the combustion furnace, and the right ends of the plurality of cross bars penetrate into the interior of the combustion furnace and are connected to the left sides of the corresponding pushing plates.

[0007] The blocking mechanism comprises a blocking plate slidably arranged in the rectangular cavity, the upper part of the blocking plate passes through the combustion platform, and a rectangular opening is opened on the blocking plate.

[0008] According to a favorable embodiment, the blocking mechanism also includes a connecting rod rotatably arranged in the rectangular opening, a blocking block is fixedly arranged on the connecting rod, two limit openings symmetrically distributed front and back are opened on the left side of the blocking block, two limit blocks symmetrically distributed front and back are fixedly arranged on the left side of the blocking plate, and the limit blocks are located in the limit openings, an extrusion block is fixedly arranged on the left upper part of the push plate, a flat plate is fixedly arranged on the bottom of the blocking plate, and the sides where the extrusion block and the flat plate contact each other are both sloped.

[0009] According to a favorable embodiment, a sliding opening is provided at the vertical section of each step surface of the combustion table and the bottom end of the second baffle, and the side of the push plate away from the cross bar is located in the sliding opening and is slidably connected to the sliding opening.

[0010] According to a favorable embodiment, a plurality of air inlet holes are provided in the horizontal section of each step surface of the combustion table, and the air inlet holes are connected to the rectangular cavity, and an air supply mechanism for use with the air inlet holes is provided on the front side of the combustion furnace, and the air supply mechanism includes an air supply pipe fixedly arranged on the front side of the combustion furnace, and a plurality of air guide pipes are connected to the air supply pipe, and the ends of the plurality of air guide pipes away from the air supply pipes respectively penetrate into the corresponding rectangular cavities, and an air outlet pipe is provided on the upper right side of the combustion furnace, and valves are provided on the air outlet pipe and the air guide pipe.

[0011] According to a favorable embodiment, a material guide plate is fixedly provided at the inner upper end of the rectangular cavity, the material guide plate is in an inverted V shape, the flat plate is located in the middle of the lower end of the material guide plate, and the material guide plate is located at the lower end of the air guide tube, a connecting plate is fixedly provided on the upper right side of the material guide plate, the upper part of the connecting plate is connected to the inner wall of the rectangular cavity, and a plurality of first protrusions symmetrically distributed front to back are fixedly provided on the bottom of the material guide plate.

[0012] According to a favorable embodiment, the upper part of the push plate located in the rectangular cavity is provided with two sets of collision mechanisms which are symmetrically distributed front to back and used in conjunction with the first protrusion, the collision mechanism includes a sleeve fixedly arranged on the upper part of the push plate, a spring is arranged inside the sleeve, a vertical rod is fixedly arranged at the top end of the spring, the top end of the vertical rod passes through the interior of the sleeve and is fixedly provided with a second protrusion, and the second protrusion is located between the corresponding two first protrusions.

[0013] According to a favorable embodiment, a material discharge hood is fixedly provided on the upper part of the combustion furnace and on the right side of the electric push rod, a material discharge plate is fixedly provided inside the material discharge hood, and a plurality of material guide ports are provided on the material discharge plate, a material storage barrel is fixedly provided on the upper part of the material discharge hood, a feed pipe is provided on the upper right end of the material storage barrel, a discharge pipe is provided at the lower end of the material storage barrel, and the bottom end of the discharge pipe passes through the interior of the material discharge hood.

[0014] According to a favorable embodiment, a discharging mechanism for use with a discharging cover is provided in the material storage barrel, and the discharging mechanism includes a first disc fixedly provided at the lower end of the interior of the material storage barrel, a second disc is rotatably provided on the upper part of the first disc, and discharging ports are provided on both the first disc and the second disc, and the two discharging ports are staggered with each other, a first rotating rod is fixedly provided on the upper part of the second disc, and the top end of the first rotating rod passes through the material storage barrel.

[0015] According to a favorable embodiment, a toothed plate is fixedly provided on the rear side of the vertical plate, a second rotating rod is rotatably provided on the upper part of the lower material cover and located on the rear side of the storage barrel, a gear is fixedly provided on the outer lower end of the second rotating rod, and the gear is meshed with the toothed plate, and the first rotating rod and the second rotating rod are connected through a pulley assembly.

[0016] According to a favorable embodiment, a plurality of first discharge ports distributed in a stepped manner are provided on both the front and rear sides of the combustion furnace, and a first sealing plate is provided on both the front and rear sides of the combustion furnace near the first discharge ports, an inclined plate is provided on the lower right end of the combustion table, a second discharge port is provided on the lower right end of the combustion furnace near the inclined plate, and a second sealing plate is provided on the right side of the combustion furnace near the second discharge port.

[0017] Compared with the prior art, the biomass fuel segmented step combustion device provided in the embodiment of the present invention has the following advantages:

[0018] Beneficial effects:

[0019] 1. When the biomass fuel is burned, the present invention utilizes the cooperation of the pushing mechanism and the blocking mechanism to move the biomass fuel from the leftmost step surface on the combustion platform to the rightmost step surface. During this process, the biomass fuel can be gradually burned in multiple stages, thereby ensuring that the biomass fuel can be fully burned in the combustion furnace and ensuring the utilization rate of the biomass fuel. At the same time, during the movement of the biomass fuel, the collision mechanism can be used to assist in cleaning the ash generated during combustion, effectively avoiding the problem of insufficient oxygen supply and incomplete combustion caused by ash accumulation.

[0020] 2. The present invention is provided with a pushing mechanism, a sealing mechanism, a discharging mechanism, a toothed plate and a gear. The cooperation of the pushing plate and the discharging mechanism can automatically allow the biomass fuel in the storage barrel to fall onto the combustion table. Then, through the cooperation of the pushing plate and the sealing plate, the biomass fuel can be gradually and multi-stage burned on each step surface of the combustion table, effectively avoiding the problem of incomplete combustion caused by excessive accumulation of biomass fuel. At the same time, the ash generated after combustion will also be reduced accordingly, which is beneficial to the subsequent cleaning of the combustion furnace.

[0021] 3. The present invention is provided with a first protrusion and a collision mechanism. In the process of pushing the biomass fuel on the combustion table, the second protrusion will collide with the first protrusion to cause the guide plate to vibrate, thereby helping to move or loosen the ash on the guide plate. At the same time, it can also effectively prevent the ash from remaining in the air inlet, making it more convenient to clean the ash later. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the present invention.

[0023] Figure 2 It is a partial exploded structural diagram of the present invention.

[0024] Figure 3 It is a cross-sectional structural diagram of the present invention.

[0025] Figure 4 It is a structural diagram of the connection between the combustion platform and the blocking mechanism in the present invention.

[0026] Figure 5 It is a cross-sectional view of the connection between the push plate and the combustion table when the push plate does not move and when the push plate moves in the present invention.

[0027] Figure 6 for Figure 5 A magnified view of the structure in part A.

[0028] Figure 7 It is a state diagram of the blocking mechanism of the present invention when it is not in use and when it is in use.

[0029] Figure 8 It is a structural diagram of the connection between the guide plate and the first protrusion in the present invention.

[0030] Fig. 9 for Figure 8 A magnified view of the structure of part B.

[0031] Fig.10 It is a partial structural cross-sectional view of the collision mechanism in the present invention.

[0032] Fig.11 It is a cross-sectional structural diagram of the connection between the lower material cover and the material storage barrel in the present invention.

[0033] Fig.12 The connection structure diagram of the first disc and the second disc in the present invention is

[0034] 1. Combustion furnace; 2. Combustion table; 3. First baffle; 4. Second baffle; 5. Pushing mechanism; 501. Electric push rod; 502. Vertical plate; 503. Cross bar; 504. Pushing plate; 6. Rectangular cavity; 7. Blocking mechanism; 701. Blocking plate; 702. Rectangular opening; 703. Connecting rod; 704. Blocking block; 705. Limit opening; 706. Limit block; 8. Extrusion block; 9. Flat plate; 10. Sliding opening; 11. Air inlet; 12. Air supply mechanism; 121. Air supply pipe; 122. Air guide pipe; 13. Air outlet pipe; 14. Guide plate; 15. Connecting Plate; 16, first protrusion; 17, collision mechanism; 171, sleeve; 172, spring; 173, vertical rod; 174, second protrusion; 18, discharge cover; 19, discharge plate; 20, guide port; 21, storage barrel; 22, feed pipe; 23, discharge pipe; 24, discharge mechanism; 241, first disc; 242, second disc; 243, discharge port; 244, first rotating rod; 25, tooth plate; 26, second rotating rod; 27, gear; 28, first discharge port; 29, first sealing plate; 30, inclined plate; 31, second discharge port; 32, second sealing plate. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-12 This application is further described in detail.

[0036] Please refer to Figure 1 , Figure 3 , Figure 4 A biomass fuel segmented stepped combustion device comprises a combustion furnace 1, a combustion platform 2 in the shape of a step is fixedly arranged inside the combustion furnace 1, two first baffles 3 symmetrically distributed front and back are fixedly arranged on the upper part of each step surface of the combustion platform 2, a second baffle 4 is fixedly arranged between the two first baffles 3 on the leftmost side and close to the left side, the upper part of the second baffle 4 is connected to the top wall of the combustion furnace 1, a pushing mechanism 5 used in conjunction with the combustion platform 2 is arranged on the left side of the combustion furnace 1, four rectangular cavities 6 are opened in sequence from left to right inside the combustion platform 2, and the four rectangular cavities 6 are reduced in sequence from left to right, and the rectangular cavities 6 and the combustion platform 2 are jointly provided with a blocking mechanism 7 used in conjunction with the pushing mechanism 5.

[0037] See also Figure 5 and Figure 6The pushing mechanism 5 includes an electric push rod 501 fixedly arranged on the left side of the upper part of the combustion furnace 1, a vertical plate 502 is fixedly arranged on the left end of the electric push rod 501, and a plurality of cross bars 503 distributed in a linear array are fixedly arranged on the right side of the vertical plate 502. The lengths of the plurality of cross bars 503 increase from top to bottom. Pushing plates 504 are slidably arranged in the rectangular cavity 6 and on the upper left end of the interior of the combustion furnace 1. The right ends of the plurality of cross bars 503 penetrate into the interior of the combustion furnace 1 and are connected to the left side of the corresponding pushing plates 504. The blocking mechanism 7 includes a blocking plate 701 slidably arranged in the rectangular cavity 6, the upper part of the blocking plate 701 passes through the combustion table 2, and a rectangular opening 702 is opened on the blocking plate 701.

[0038] When the biomass fuel falls on the leftmost step surface on the combustion table 2 and burns, the pushing mechanism 5 and the blocking mechanism 7 cooperate to push the biomass fuel from left to right to the next step surface in sequence to achieve full combustion of the biomass fuel.

[0039] See also Figure 1 , Figure 2 and Fig.11 A material discharge hood 18 is fixedly provided on the upper part of the combustion furnace 1 and on the right side of the electric push rod 501, a material discharge plate 19 is fixedly provided inside the material discharge hood 18, and a plurality of material guide ports 20 are provided on the material discharge plate 19, a material storage barrel 21 is fixedly provided on the upper part of the material discharge hood 18, a material feed pipe 22 is provided on the upper right end of the material storage barrel 21, a material discharge pipe 23 is provided at the lower end of the material storage barrel 21, and the bottom end of the material discharge pipe 23 passes through the interior of the material discharge hood 18.

[0040] See also Figure 1 , Fig.11 and Fig.12 A discharging mechanism 24 for use with a discharging cover 18 is provided in the storage barrel 21. The discharging mechanism 24 includes a first disc 241 fixedly provided at the lower end of the storage barrel 21, a second disc 242 is rotatably provided on the upper part of the first disc 241, and discharging ports 243 are provided on the first disc 241 and the second disc 242, and the two discharging ports 243 are staggered with each other, a first rotating rod 244 is fixedly provided on the upper part of the second disc 242, and the top end of the first rotating rod 244 passes through the storage barrel 21.

[0041] See also Figure 2 A toothed plate 25 is fixedly provided on the rear side of the vertical plate 502, and a second rotating rod 26 is rotatably provided on the upper part of the lower material cover 18 and located on the rear side of the storage barrel 21. A gear 27 is fixedly provided on the outer lower end of the second rotating rod 26, and the gear 27 is meshed with the toothed plate 25. The first rotating rod 244 and the second rotating rod 26 are connected through a pulley assembly.

[0042] In order to make it easy for the biomass fuel to fall onto the combustion table 2 for combustion, when the biomass fuel is burned, the electric push rod 501 drives the vertical plate 502 to move right, and the vertical plate 502 moves right to drive the cross bar 503 to move right, and the cross bar 503 moves right to drive the push plate 504 to move right. At this time, the corresponding push plate 504 is located on the step surface of the combustion table 2, and then the push plate 504 stops moving. During the movement of the vertical plate 502 to the right, the tooth plate 25 is also driven to move right. The tooth plate 25 moves right to drive the gear 27 to rotate, and the rotation of the gear 27 drives the second rotating rod 26 to rotate. The rotation of the second rotating rod 26 can drive the first rotating rod 244 to rotate synchronously through the pulley assembly. The first rotating rod 244 The rotation drives the first disc 241 to rotate. When the vertical plate 502 stops moving, the discharge ports 243 on the first disc 241 and the second disc 242 are aligned, so that the biomass fuel inside the storage barrel 21 can enter the discharge cover 18 through the discharge pipe 23, and finally fall into the leftmost push plate 504 through the guide port 20 on the discharge plate 19. Then the electric push rod 501 continues to work to drive the push plate 504 to reset. At this time, the biomass fuel on the push plate 504 can fall on the leftmost step surface of the combustion table 2, and the biomass fuel can be burned. After the push plate 504 is reset, the second disc 242 is also reset. At this time, the biomass fuel in the storage barrel 21 will not be discharged from the discharge pipe 23.

[0043] See also Figure 5 , Figure 6 , Figure 7 and Figure 8 The blocking mechanism 7 also includes a connecting rod 703 rotatably arranged in the rectangular opening 702, a blocking block 704 is fixedly arranged on the connecting rod 703, two limit openings 705 symmetrically distributed front and back are opened on the left side of the blocking block 704, two limit blocks 706 symmetrically distributed front and back are fixedly arranged on the left side of the blocking plate 701, and the limit blocks 706 are located in the limit openings 705, an extrusion block 8 is fixedly arranged on the upper left side of the push plate 504, a flat plate 9 is fixedly arranged on the bottom of the blocking plate 701, and the sides where the extrusion block 8 and the flat plate 9 contact each other are both sloped.

[0044] In order to ensure that the biomass fuel can be fully burned in the combustion furnace 1, after the biomass fuel on the leftmost step surface of the combustion table 2 has been burning for a certain period of time, the electric push rod 501 works to drive the vertical plate 502 to move to the right. At this time, the push plate 504 will move to the right, and the push plate 504 will drive the extrusion block 8 to move to the right during the rightward movement. After the extrusion block 8 moves to the right and contacts the flat plate 9, it will push the flat plate 9 to move upward. The upward movement of the flat plate 9 will push the blocking plate 701 to move upward, so that the blocking block 704 is completely exposed. Then, as the push plate 504 continues to move to the right, the biomass fuel on the step surface can be pushed to the right by the push plate 504. When the biomass fuel contacts the blocking block 704 during the rightward movement, it will push the blocking block 704 to rotate, so that the biomass fuel can fall onto the push plate 504 on the next step surface through the rectangular opening 702 (such as Figure 5 As shown), the incompletely burned biomass fuel at the bottom will be turned over by falling, and the biomass fuel in the storage barrel 21 can fall on the leftmost push plate 504, so that when the electric push rod 501 drives the push plate 504 to move to the left for resetting, there will be new biomass fuel on the leftmost step surface on the combustion table 2, and there will also be biomass fuel that has been burned once on the step surface adjacent to the leftmost step surface, and when the push plate 504 is reset, the squeezing of the blocking block 704 disappears and the pushing plate 504 will rotate to reset, and then the blocking block 704 moves down to the initial position together with the blocking plate 701. At this time, the cooperation of the blocking plate 701 and the first baffle 3 can prevent the biomass on the step surface of the combustion table 2 from sliding off.

[0045] By following the same steps, biomass fuel can be placed on all four step surfaces on the combustion table 2, and after the biomass fuel moves from the leftmost step surface to the rightmost step surface on the combustion table 2, it can be burned step by step in multiple stages, thereby ensuring that the biomass fuel can be fully burned in the combustion furnace 1, thereby ensuring the utilization rate of the biomass fuel.

[0046] See also Figure 1 , Figure 3 and Figure 4 A plurality of air inlet holes 11 are provided on the horizontal section of each step surface of the combustion platform 2, and the air inlet holes 11 are connected to the rectangular cavity 6. An air supply mechanism 12 for use with the air inlet holes 11 is provided on the front side of the combustion furnace 1. The air supply mechanism 12 includes an air supply pipe 121 fixedly arranged on the front side of the combustion furnace 1. A plurality of air guide pipes 122 are connected to the air supply pipe 121, and the ends of the plurality of air guide pipes 122 away from the air supply pipe 121 respectively penetrate into the corresponding rectangular cavity 6. An air outlet pipe 13 is provided on the upper right side of the combustion furnace 1, and valves are provided on the air outlet pipe 13 and the air guide pipe 122.

[0047] In order to improve the combustion effect of the biomass fuel in the combustion furnace 1, when the biomass fuel is burning, a combustion-supporting gas can be filled into the air supply pipe 121, and then the combustion-supporting gas can enter the rectangular cavity 6 through the air guide pipe 122, and finally contact the biomass fuel through the air inlet 11, thereby improving the combustion effect of the biomass fuel during combustion.

[0048] See also Figure 4 A sliding opening 10 is provided at the vertical section of each step surface of the combustion table 2 and at the bottom end of the second baffle 4 . The side of the push plate 504 away from the cross bar 503 is located in the sliding opening 10 and is slidably connected to the sliding opening 10 .

[0049] In order to ensure that the push plate 504 does not affect the combustion effect of the biomass fuel during combustion, when the combustion-supporting gas is supplied to the combustion furnace 1, the right end of the push plate 504 is located in the slide 10, so as not to block the air inlet 11 on the step surface, so that the combustion-supporting gas can contact the biomass fuel through the air inlet 11, and will not affect the combustion of the biomass fuel.

[0050] See also Figure 3 , Figure 4 , Figure 8 , Fig. 9 and Fig.10 A material guide plate 14 is fixedly provided at the inner upper end of the rectangular cavity 6, and the material guide plate 14 is in an inverted V shape. The flat plate 9 is located in the middle of the lower end of the material guide plate 14, and the material guide plate 14 is located at the lower end of the air guide tube 122. A connecting plate 15 is fixedly provided on the upper right side of the material guide plate 14, and the upper part of the connecting plate 15 is connected to the inner wall of the rectangular cavity 6. A plurality of first protrusions 16 symmetrically distributed frontward and rearward are fixedly provided at the bottom of the material guide plate 14.

[0051] See also Fig. 9 and Fig.10 The upper part of the push plate 504 located in the rectangular cavity 6 is provided with two sets of collision mechanisms 17 which are symmetrically distributed front and back and used in conjunction with the first protrusion 16. The collision mechanism 17 includes a sleeve 171 fixedly arranged on the upper part of the push plate 504, a spring 172 is arranged inside the sleeve 171, a vertical rod 173 is fixedly arranged at the top of the spring 172, the top of the vertical rod 173 passes through the interior of the sleeve 171 and is fixedly provided with a second protrusion 174, and the second protrusion 174 is located between the corresponding two first protrusions 16.

[0052] In order to facilitate the cleaning of the ash produced after the combustion of biomass fuel, corresponding ash will be produced after the biomass fuel is burned on each step surface. When the push plate 504 pushes the biomass fuel to move to the right, part of the ash will move to the right with the biomass fuel, and the remaining part of the ash will enter the rectangular cavity 6 through the air inlet 11, and finally fall on the guide plate 14. Each time the push plate 504 moves, it will drive the sleeve 171 to move. The movement of the sleeve 171 through the vertical rod 173 will drive the second protrusion 174 to move. During the movement of the second protrusion 174, the spring 172 will cooperate with the multiple first protrusions 16 to generate vibrations. These vibrations will be transmitted to the guide plate 14, which will help the ash on the guide plate 14 to move or loosen. At the same time, the connecting plate 15 will also transmit the vibration force to the combustion table 2, which can also effectively prevent the ash from remaining in the air inlet 11, making it convenient to clean these ashes later.

[0053] See also Figure 1 , Figure 2 and Figure 3 A plurality of first discharge ports 28 distributed in a stepped manner are provided on the front and rear sides of the combustion furnace 1, and first sealing plates 29 are provided on the front and rear sides of the combustion furnace 1 near the first discharge ports 28, an inclined plate 30 is provided at the lower right end of the combustion table 2, a second discharge port 31 is provided at the lower right end of the combustion furnace 1 near the inclined plate 30, and a second sealing plate 32 is provided on the right side of the combustion furnace 1 near the second discharge port 31.

[0054] In order to facilitate the removal of the ash produced after the combustion of biomass from the combustion furnace 1, the ash falling on the guide plate 14 will move to the first discharge port 28 after being vibrated. At this time, opening the first sealing plate 29 can facilitate the cleaning of the ash on the guide plate 14. The ash moving with the biomass fuel will eventually move to the second discharge port 31 through the inclined plate 30, and then the second sealing plate 32 can be opened for cleaning, so that the ash can be conveniently removed from the combustion furnace 1.

[0055] During specific operation, by utilizing the cooperation of the pushing mechanism 5 and the blocking mechanism 7, the biomass fuel in the storage barrel 21 can be first moved to the leftmost step surface of the combustion table 2 for combustion, and then the same steps can be followed to ensure that there is biomass fuel on the four step surfaces on the combustion table 2. After the biomass fuel is moved from the leftmost step surface to the rightmost step surface on the combustion table 2, multi-stage combustion can be performed step by step, thereby ensuring that the biomass fuel can be fully burned in the combustion furnace 1, thereby ensuring the utilization rate of the biomass fuel.

[0056] At the same time, in the process of pushing the biomass fuel, part of the ash will move to the second discharge port 31 along with the biomass fuel, and the remaining part of the ash will enter the guide plate 14 through the air inlet 11. Then, in the process of moving, the push plate 504 can vibrate the ash on the guide plate 14 by utilizing the cooperation of the collision mechanism 17 and the first protrusion 16, which helps the ash on the guide plate 14 to move toward the first discharge port 28. Then, the first sealing plate 29 and the second sealing plate 32 can be opened to clean the ash generated after the combustion of the biomass fuel.

[0057] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A biomass fuel segmented step combustion device, comprising a combustion furnace (1), characterized in that: A combustion platform (2) in a stepped shape is fixedly arranged inside the combustion furnace (1), two first baffles (3) symmetrically distributed front and back are fixedly arranged on the upper part of each step surface of the combustion platform (2), a second baffle (4) is fixedly arranged between the two leftmost first baffles (3) and close to the left side, the upper part of the second baffle (4) is connected to the top wall of the combustion furnace (1), a pushing mechanism (5) used in conjunction with the combustion platform (2) is arranged on the left side of the combustion furnace (1), four rectangular cavities (6) are sequentially opened from left to right inside the combustion platform (2), the four rectangular cavities (6) are successively reduced from left to right, and a blocking mechanism (7) used in conjunction with the pushing mechanism (5) is jointly arranged in the rectangular cavity (6) and the combustion platform (2); The pushing mechanism (5) comprises an electric push rod (501) fixedly arranged on the upper left side of the combustion furnace (1), a vertical plate (502) fixedly arranged on the left end of the electric push rod (501), a plurality of cross bars (503) distributed in a linear array fixedly arranged on the right side of the vertical plate (502), the plurality of cross bars (503) increasing in length from top to bottom, a pushing plate (504) slidably arranged on the upper left end of the rectangular cavity (6) and the interior of the combustion furnace (1), the right ends of the plurality of cross bars (503) all penetrate into the interior of the combustion furnace (1) and are connected to the left side of the corresponding pushing plate (504); The blocking mechanism (7) comprises a blocking plate (701) slidably arranged in the rectangular cavity (6); the upper part of the blocking plate (701) passes through the combustion platform (2), and a rectangular opening (702) is opened on the blocking plate (701).

2. A biomass fuel segmented step combustion device according to claim 1, characterized in that: The blocking mechanism (7) further comprises a connecting rod (703) rotatably arranged in the rectangular opening (702), a blocking block (704) being fixedly arranged on the connecting rod (703), two limit openings (705) symmetrically distributed frontward and rearward being opened on the left side of the blocking block (704), two limit blocks (706) symmetrically distributed frontward and rearward being fixedly arranged on the left side of the blocking plate (701), and the limit blocks (706) are located in the limit openings (705), an extrusion block (8) is fixedly arranged on the left side of the upper part of the push plate (504), a flat plate (9) is fixedly arranged on the bottom of the blocking plate (701), and the sides where the extrusion block (8) and the flat plate (9) contact each other are both sloped.

3. A biomass fuel segmented step combustion device according to claim 1, characterized in that: A sliding opening (10) is provided at the vertical section of each step surface of the combustion table (2) and at the bottom end of the second baffle (4), and a side of the push plate (504) away from the cross bar (503) is located in the sliding opening (10) and is slidably connected to the sliding opening (10).

4. A biomass fuel staged step combustion device according to claim 2, characterized in that: A plurality of air inlet holes (11) are provided on the horizontal section of each step surface of the combustion platform (2), and the air inlet holes (11) are connected to the rectangular cavity (6). An air supply mechanism (12) for use with the air inlet holes (11) is provided on the front side of the combustion furnace (1). The air supply mechanism (12) comprises an air supply pipe (121) fixedly arranged on the front side of the combustion furnace (1). A plurality of air guide pipes (122) are connected to the air supply pipe (121), and the ends of the plurality of air guide pipes (122) away from the air supply pipe (121) respectively penetrate into the corresponding rectangular cavity (6). An air outlet pipe (13) is provided on the upper right side of the combustion furnace (1), and valves are provided on the air outlet pipe (13) and the air guide pipe (122).

5. A biomass fuel staged step combustion device according to claim 4, characterized in that: A material guide plate (14) is fixedly arranged at the upper end of the interior of the rectangular cavity (6), the material guide plate (14) is in an inverted V shape, the flat plate (9) is located in the middle of the lower end of the material guide plate (14), and the material guide plate (14) is located at the lower end of the air guide pipe (122), a connecting plate (15) is fixedly arranged on the right side of the upper part of the material guide plate (14), the upper part of the connecting plate (15) is connected to the inner wall of the rectangular cavity (6), and a plurality of first protrusions (16) symmetrically distributed frontward and rearward are fixedly arranged at the bottom of the material guide plate (14).

6. A biomass fuel staged step combustion device according to claim 5, characterized in that: The upper part of the push plate (504) located in the rectangular cavity (6) is provided with two groups of collision mechanisms (17) which are symmetrically distributed front and back and used in conjunction with the first protrusion (16), the collision mechanism (17) comprising a sleeve (171) fixedly arranged on the upper part of the push plate (504), a spring (172) arranged inside the sleeve (171), a vertical rod (173) fixedly arranged at the top end of the spring (172), the top end of the vertical rod (173) passes through the interior of the sleeve (171) and is fixedly provided with a second protrusion (174), and the second protrusion (174) is located between the corresponding two first protrusions (16).

7. The biomass fuel segmented step combustion device according to claim 1, characterized in that: A material discharge hood (18) is fixedly arranged on the upper part of the combustion furnace (1) and on the right side of the electric push rod (501), a material discharge plate (19) is fixedly arranged inside the material discharge hood (18), and a plurality of material guide ports (20) are provided on the material discharge plate (19), a material storage barrel (21) is fixedly arranged on the upper part of the material discharge hood (18), a material feed pipe (22) is arranged on the upper right end of the material storage barrel (21), a material discharge pipe (23) is arranged at the lower end of the material storage barrel (21), and the bottom end of the material discharge pipe (23) passes through the interior of the material discharge hood (18).

8. A biomass fuel staged step combustion device according to claim 7, characterized in that: A discharge mechanism (24) for use with a discharge cover (18) is arranged inside the material storage barrel (21), and the discharge mechanism (24) comprises a first disc (241) fixedly arranged at the lower end of the interior of the material storage barrel (21), a second disc (242) rotatably arranged on the upper part of the first disc (241), a discharge opening (243) is provided on both the first disc (241) and the second disc (242), and the two discharge openings (243) are staggered with each other, a first rotating rod (244) is fixedly arranged on the upper part of the second disc (242), and the top end of the first rotating rod (244) passes through the material storage barrel (21).

9. A biomass fuel staged step combustion device according to claim 8, characterized in that: A toothed plate (25) is fixedly provided on the rear side of the vertical plate (502); a second rotating rod (26) is rotatably provided on the upper part of the lower material cover (18) and located on the rear side of the storage barrel (21); a gear (27) is fixedly provided on the outer lower end of the second rotating rod (26), and the gear (27) is meshed with the toothed plate (25); the first rotating rod (244) and the second rotating rod (26) are connected in transmission via a pulley assembly.

10. The biomass fuel segmented step combustion device according to claim 1, characterized in that: The combustion furnace (1) is provided with a plurality of first discharge ports (28) distributed in a stepped manner on both the front and rear sides, and first sealing plates (29) are provided on both the front and rear sides of the combustion furnace (1) near the first discharge ports (28); an inclined plate (30) is provided on the lower right end of the combustion table (2); a second discharge port (31) is provided on the lower right end of the combustion furnace (1) near the inclined plate (30), and a second sealing plate (32) is provided on the right side of the combustion furnace (1) near the second discharge port (31).

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