Flue gas recycling and carbonizing equipment based on biomass fuel

Abstract

The invention is applicable to the related technical field of flue gas recovery in biomass fuel production, and provides biomass fuel-based flue gas recovery carbon making equipment, which comprises a flue gas collecting barrel, a rotating barrel is arranged in the flue gas collecting barrel, the outer wall of the rotating barrel is in contact with the inner wall of the flue gas collecting barrel, and the outer wall of the rotating barrel is in contact with the inner wall of the flue gas collecting barrel; a rotating cylinder is fixedly connected to the upper cover, a first scraping unit used for scraping the inner wall of the rotating cylinder is arranged in the rotating cylinder, a first air cylinder is fixedly connected to the upper cover, the output end of the first air cylinder is fixedly connected with an inner scraping plate, and the inner scraping plate is used for scraping the inner wall of the smoke collecting cylinder. And a rotating unit drives a rotating cylinder to rotate, a first scraping unit scrapes attachments adhered to the inner wall of the rotating cylinder, and the output end of a first air cylinder drives an inner scraping plate to further scrape the inner wall of the rotating cylinder, so that the inner wall of the rotating cylinder is ensured to be clean, and the bad influence on smoke collection is avoided.

Description

Technical Field

[0001] This invention belongs to the technical field of flue gas recovery in biomass fuel production, and particularly relates to a flue gas recovery and charcoal production device based on biomass fuel. Background Technology

[0002] Biochar is a type of charcoal with an extremely high carbon content. It is produced by carbonizing wood, grass, corn stalks, or other organic waste through high-temperature pyrolysis in a low-oxygen environment. Biochar can effectively improve soil fertility, help plant growth, and its porous adsorption properties can also effectively fix harmful substances such as heavy metals in the soil.

[0003] For example, a biochar preparation device with Chinese patent announcement number CN206395832U transports the collected waste heat oil and gas to a burner for combustion, providing heat for the pyrolysis of biomass and avoiding energy waste; the high-temperature flue gas generated by the burner is transformed into low-temperature flue gas after passing through the pyrolysis device. The low-temperature flue gas with a temperature of 200-300℃ preheats the material to be pyrolyzed, reducing the energy required for the pyrolysis of the material.

[0004] However, the above-mentioned device has some shortcomings in actual use. The low-temperature flue gas formed by the pyrolysis device contains adhering substances, such as tar. After being cooled by the cooling device, the adhering substances will adhere to the pipe, not only to the side wall but also to the inner bottom surface. If they are not cleaned in time, they will have an adverse effect on the collection of flue gas. Based on this, a flue gas recovery and char production device based on biomass fuel is proposed to solve the above problems. Summary of the Invention

[0005] This invention provides a flue gas recovery and char production device based on biomass fuel, aiming to solve the problem that the low-temperature flue gas formed after the pyrolysis device contains adhering substances, such as tar, which adhere to the pipes after being cooled by the cooling device. These substances not only adhere to the side walls but also to the inner bottom surface. If they are not cleaned in time, they will have an adverse effect on the collection of flue gas.

[0006] This invention is implemented as follows: a flue gas recovery and charcoal production device based on biomass fuel includes a flue gas collection cylinder, which is provided with an upper cover and a lower cover. The upper cover is fixedly connected to an external device and is connected to the external device through an air inlet pipe. The lower cover is connected to the external device through an air outlet pipe. A rotating cylinder is provided inside the flue gas collection cylinder, and the outer wall of the rotating cylinder is in contact with the inner wall of the flue gas collection cylinder. The rotating cylinder is connected to the flue gas collection cylinder through a rotating unit. A first scraping unit for scraping the inner wall of the rotating cylinder is provided inside the rotating cylinder. A first cylinder is fixedly connected to the upper cover, and an inner scraper is fixedly connected to the output end of the first cylinder. The inner scraper is used to scrape the inner wall of the flue gas collection cylinder.

[0007] Preferably, the outer wall of the rotating cylinder is fixedly connected with an annular snap-fit ​​protrusion, and the inner wall of the flue gas collecting cylinder is provided with an annular snap-fit ​​groove that mates with the annular snap-fit ​​protrusion.

[0008] Preferably, the first scraping unit includes a first scraper fixedly connected to the inner side of the upper cover, and the first scraper is connected with scraping protrusions.

[0009] Preferably, the rotating unit includes a first motor, which is fixedly connected to the flue gas collection cylinder via a first connecting rod. A first gear is fixedly connected to the output end of the first motor, and a first tooth is provided on the side of the first gear. The rotating cylinder extends out of the upper cover, and a second tooth is provided on the inner wall of the rotating cylinder to mesh with the first tooth.

[0010] Preferably, a second connecting rod is fixedly connected to the side of the lower cover, and the second connecting rod is fixedly connected to the output end of the second cylinder. A second scraping unit for scraping the side of the inner scraper is provided on the lower cover.

[0011] Preferably, the second scraping unit includes a first connecting plate fixedly connected to the lower cover, a first guide rod inserted into the first connecting plate, a second scraper fixedly connected to one end of the first guide rod, and a second connecting plate fixedly connected to the other end of the first guide rod. The side of the second connecting plate is connected to the side of the first connecting plate through a first spring for providing elasticity. The first spring is sleeved on the outside of the first guide rod, and a scraping strip is fixedly connected to the second scraper.

[0012] Preferably, the second cylinder is connected to the third connecting plate via the first adjusting unit, the third connecting plate is connected to an external device, and the third connecting plate is connected to a third scraping unit for scraping the lower cover via the second adjusting unit.

[0013] Preferably, the first adjustment unit includes two symmetrically arranged fourth connecting plates fixedly connected to the third connecting plate. A second motor is fixedly connected to one of the fourth connecting plates, and a reciprocating lead screw is fixedly connected to the output end of the second motor. The reciprocating lead screw is rotatably connected to the fourth connecting plate. A reciprocating slider is sleeved on the outer side of the reciprocating lead screw. A first limiting rod is fixedly connected between the two fourth connecting plates. The first limiting rod passes through the reciprocating slider. The second cylinder is fixedly connected to the reciprocating slider.

[0014] Preferably, the second adjustment unit includes a third connecting rod fixedly connected to the reciprocating slider, an adjustment block fixedly connected to the end of the third connecting rod, a through groove for the third connecting rod to pass through on the third connecting plate, symmetrically arranged inclined surfaces on the adjustment block, guide plates rotatably connected to the upper and lower sides of the adjustment block via a first rotating shaft, the inward side of the guide plate being connected to the adjustment block via a supporting elastic ring, and a first limiting plate fixedly connected to the third connecting plate.

[0015] Preferably, the third scraping unit includes a fifth connecting plate fixedly connected to the side of the first limiting plate, a second guide rod inserted into the fifth connecting plate, a sixth connecting plate sleeved on the outer side of the second guide rod, a third scraper fixedly connected to one end of the second guide rod, a seventh connecting plate fixedly connected to the other end of the second guide rod, the side of the sixth connecting plate being connected to the side of the seventh connecting plate via a second spring for providing elasticity, the second spring being sleeved on the outer side of the second guide rod, and an adjusting rod fixedly connected to the side of the sixth connecting plate facing the third connecting plate.

[0016] Compared with the prior art, the embodiments of this application have the following advantages: by setting the first scraping unit, the second scraping unit and the third scraping unit, the inner wall of the rotating cylinder as well as the inner scraper and the lower cover can be scraped off in all directions, ensuring the cleanliness of the inner wall of the rotating cylinder and avoiding adverse effects on flue gas collection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a flue gas recovery and charcoal production device based on biomass fuel provided by the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of a flue gas recovery and charcoal production device based on biomass fuel provided by the present invention. Figure 2 ; Figure 3 This is a cross-sectional structural diagram of the connection between the flue gas collection cylinder and the rotating cylinder in a flue gas recovery and charcoal production device based on biomass fuel provided by the present invention. Figure 4This is a schematic diagram of the internal structure of the flue gas collection cylinder and the rotating cylinder of a flue gas recovery and charcoal production device based on biomass fuel provided by the present invention; Figure 5 This is a partial structural diagram of a flue gas recovery and charcoal production device based on biomass fuel provided by the present invention. Figure 1 ; Figure 6 This is a partial structural diagram of a flue gas recovery and charcoal production device based on biomass fuel provided by the present invention. Figure 2 ; Figure 7 This is a schematic diagram of the regulating block in a flue gas recovery and charcoal production device based on biomass fuel provided by the present invention.

[0018] Figure reference numerals: 1. Smoke collection cylinder; 2. Upper cover; 3. Lower cover; 4. Inlet pipe; 5. Outlet pipe; 6. Rotating cylinder; 7. First cylinder; 8. Inner scraper; 9. Annular snap-fit ​​protrusion; 10. Annular snap-fit ​​groove; 11. First scraper; 12. Scraping protrusion; 13. First motor; 14. First connecting rod; 15. First gear; 16. First gear tooth; 17. Second gear tooth; 18. Second connecting rod; 19. First connecting plate; 20. First guide rod; 21. Second scraper; 22. Second connecting plate; 23. First spring; 24. 25. Scraping bar; 26. Second cylinder; 27. Third connecting plate; 28. Fourth connecting plate; 29. ​​Second motor; 20. Reciprocating lead screw; 31. Reciprocating slider; 32. First limiting rod; 33. Third connecting rod; 34. Adjusting block; 35. Through groove; 36. Inclined surface; 37. First rotating shaft; 38. Guide plate; 39. Supporting elastic ring; 40. First limiting plate; 41. Fifth connecting plate; 42. Second guide rod; 43. Sixth connecting plate; 44. Third scraper; 45. Seventh connecting plate; 46. Second spring; 47. Adjusting rod. Detailed Implementation

[0019] 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 application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0020] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] This invention provides a flue gas recovery and charcoal production device based on biomass fuel, such as... Figures 1-7 As shown, the device includes a flue gas collection cylinder 1, with an upper cover 2 and a lower cover 3. The upper cover 2 is fixedly connected to an external device, which is a device for generating flue gas by burning biomass fuel. The upper cover 2 is connected to the external device through an air inlet pipe 4, and the lower cover 3 is connected to the external device through an air outlet pipe 5. A rotating cylinder 6 is installed inside the flue gas collection cylinder 1. The outer wall of the rotating cylinder 6 is in contact with the inner wall of the flue gas collection cylinder 1. The rotating cylinder 6 is connected to the flue gas collection cylinder 1 through a rotating unit. A first scraping unit for scraping the inner wall of the rotating cylinder 6 is installed inside the rotating cylinder 6. A first cylinder 7 is fixedly connected to the upper cover 2. An inner scraper 8 is fixedly connected to the output end of the first cylinder 7. The inner scraper 8 is used to scrape the inner wall of the flue gas collection cylinder 1.

[0022] The inner scraper 8 is provided with a through groove that allows the first scraper 11 to pass through.

[0023] The outer wall of the rotating cylinder 6 is fixedly connected with an annular snap-fit ​​protrusion 9, and the inner wall of the flue gas collection cylinder 1 is provided with an annular snap-fit ​​groove 10 that cooperates with the annular snap-fit ​​protrusion 9.

[0024] In actual use, the flue gas is fed into the flue gas collection pipe through the inlet pipe 4 for collection, and then output through the outlet pipe 5. The rotating unit drives the rotating cylinder 6 to rotate, the first scraping unit scrapes off the adhering substances on the inner wall of the rotating cylinder 6, and the output end of the first cylinder 7 drives the inner scraper 8 to further scrape the inner wall of the rotating cylinder 6 to ensure the cleanliness of the inner wall of the rotating cylinder 6 and avoid adverse effects on flue gas collection.

[0025] Combination Figure 4 The first scraping unit includes a first scraper 11 fixedly connected to the inner side of the upper cover 2, and a scraping protrusion 12 is connected to the first scraper 11.

[0026] The rotating unit includes a first motor 13, which is fixedly connected to the flue gas collection cylinder 1 via a first connecting rod 14. A first gear 15 is fixedly connected to the output end of the first motor 13. A first gear tooth 16 is provided on the side of the first gear 15. The rotating cylinder 6 extends out of the upper cover 2. A second gear tooth 17 that meshes with the first gear tooth 16 is provided on the inner wall of the rotating cylinder 6.

[0027] The first motor 13 rotates, driving the first gear 15 to rotate. With the cooperation of the first gear 16 and the second gear 17, the rotating cylinder 6 rotates, while the first scraper 11 and the scraping protrusion 12 do not rotate, thus scraping off the adhering substances on the inner wall of the rotating cylinder 6.

[0028] A second connecting rod 18 is fixedly connected to the side of the lower cover 3. The second connecting rod 18 is fixedly connected to the output end of the second cylinder 25. A second scraping unit for scraping the side of the inner scraper 8 is provided on the lower cover 3.

[0029] Combination Figure 5 The second scraping unit includes a first connecting plate 19 fixedly connected to the lower cover 3. A first guide rod 20 is inserted into the first connecting plate 19. A second scraper 21 is fixedly connected to one end of the first guide rod 20. A second connecting plate 22 is fixedly connected to the other end of the first guide rod 20. The side of the second connecting plate 22 is connected to the side of the first connecting plate 19 through a first spring 23 for providing elasticity. The first spring 23 is sleeved on the outside of the first guide rod 20. A scraping strip 24 is fixedly connected to the second scraper 21.

[0030] The second cylinder 25 is connected to the third connecting plate 26 via the first adjusting unit. The third connecting plate 26 is connected to an external device. A third scraping unit for scraping the lower cover 3 is connected to the third connecting plate 26 via the second adjusting unit.

[0031] When the second scraping unit is actually used, the first cylinder 7 pushes the inner scraper 8 to the end of the rotating cylinder 6, and at the same time, the output end of the second cylinder 25 drives the lower cover 3 to separate from the flue gas collection cylinder 1. Under the action of the first adjustment unit, the second scraper 21 is driven to contact the end face of the inner scraper 8 to remove the attached substances. Under the elastic force of the first spring 23, the stability of the scraping operation of the second scraper 21 is ensured.

[0032] The first adjustment unit includes two symmetrically arranged fourth connecting plates 27 fixedly connected to the third connecting plate 26. A second motor 28 is fixedly connected to one of the fourth connecting plates 27. A reciprocating lead screw 29 is fixedly connected to the output end of the second motor 28. The reciprocating lead screw 29 is rotatably connected to the fourth connecting plate 27. A reciprocating slider 30 is sleeved on the outer side of the reciprocating lead screw 29. A first limiting rod 31 is fixedly connected between the two fourth connecting plates 27. The first limiting rod 31 passes through the reciprocating slider 30. A second cylinder 25 is fixedly connected to the reciprocating slider 30.

[0033] When the first adjustment unit is actually used, the second motor 28 rotates, driving the reciprocating lead screw 29 to rotate, which in turn drives the reciprocating slider 30 to move back and forth on the reciprocating lead screw 29. The reciprocating slider 30 drives the related components connected to it to move.

[0034] Combination Figure 6 and Figure 7 The third scraping unit includes a fifth connecting plate 40 fixedly connected to the side of the first limiting plate 39. A second guide rod 41 is inserted into the fifth connecting plate 40. A sixth connecting plate 42 is sleeved on the outside of the second guide rod 41. A third scraper 43 is fixedly connected to one end of the second guide rod 41. A seventh connecting plate 44 is fixedly connected to the other end of the second guide rod 41. The side of the sixth connecting plate 42 is connected to the side of the seventh connecting plate 44 through a second spring 45 for providing elasticity. The second spring 45 is sleeved on the outside of the second guide rod 41. An adjusting rod 46 is fixedly connected to the side of the sixth connecting plate 42 facing the third connecting plate 26.

[0035] When the third scraping unit is actually used, the reciprocating slider 30 drives the lower cover plate 3 to move. The third scraper 43 does not move relative to the position of the third connecting plate 26. After the lower cover plate 3 moves to the contact position with the third scraper plate, the lower cover plate 3 continues to move. The setting of the second spring 45 ensures that the third scraper 43 can stably scrape off the adhering substances on the lower cover plate 3.

[0036] To ensure that the material does not fall onto the third scraping unit when the inner scraper 8 is scraping off the attached material, a second adjustment unit is provided. The second adjustment unit includes a third connecting rod 32 fixedly connected to the reciprocating slider 30. An adjustment block 33 is fixedly connected to the end of the third connecting rod 32. A through groove 34 is provided on the third connecting plate 26 for the third connecting rod 32 to pass through. An inclined surface 35 is provided on the adjustment block 33. Guide plates 37 are rotatably connected to the upper and lower sides of the adjustment block 33 through a first rotating shaft 36. The inward side of the guide plate 37 is connected to the adjustment block 33 through a support elastic ring 38. A first limiting plate 39 is fixedly connected to the third connecting plate 26.

[0037] In actual use, the reciprocating slider 30 drives the third connecting rod 32 and the adjusting block 33 to reciprocate. Under the elastic force of the second spring 45, the adjusting rod 46 exerts a downward pressure on the first limiting plate 39. When the adjusting block 33 moves downward, the adjusting rod 46 contacts the guide plate 37 and, under the action of the inclined surface 35, drives the third scraping plate away from the lower cover plate 3. After the adjusting rod 46 moves to the uppermost end of the adjusting block 33, as the adjusting block 33 continues to move downward, the lower cover plate 3 contacts the third scraping plate to perform scraping. At this time, the adjusting rod 46 moves between the adjusting block 33 and the first limiting plate 39. After moving to the position of the guide plate 37, it drives the guide plate 37 to rotate around the second rotating shaft, stretching the support elastic ring 38. After the adjusting rod 46 disengages from the guide plate 37, the guide plate 37 returns to its original position, waiting for the next scraping operation.

[0038] In summary, the working principle of this invention is as follows: flue gas is input into the flue gas collection pipe through the inlet pipe 4 for collection, and then output through the outlet pipe 5. The rotating unit drives the rotating cylinder 6 to rotate. The first scraping unit scrapes off the adhering substances on the inner wall of the rotating cylinder 6. The output end of the first cylinder 7 drives the inner scraper 8 to further scrape the inner wall of the rotating cylinder 6, ensuring the cleanliness of the inner wall of the rotating cylinder 6 and avoiding adverse effects on flue gas collection. At the same time, the output end of the second cylinder 25 drives the inner scraper 8 to move to the end of the rotating cylinder 6. The lower cover 3 detaches from the flue gas collection cylinder 1. Driven by the first adjusting unit, the second scraper 21 contacts the end face of the inner scraper 8 to remove the adhering substances. The first spring 23 ensures the stability of the scraping operation by the second scraper 21. The second motor 28 rotates, driving the reciprocating screw 29 to rotate, which in turn drives the reciprocating slider 30 to reciprocate on the reciprocating screw 29. The reciprocating slider 30 drives the related components connected to it to move. The reciprocating slider 30 moves the lower cover 3, and the third scraper 43... The third connecting plate 26 does not move. After the lower cover 3 moves to the position of contact with the third scraper plate, the lower cover 3 continues to move. The second spring 45 ensures that the third scraper plate 43 stably scrapes off the adhering material on the lower cover 3. The reciprocating slider 30 drives the third connecting rod 32 and the adjusting block 33 to reciprocate. Under the elastic force of the second spring 45, the adjusting rod 46 exerts a downward pressure on the first limiting plate 39. When the adjusting block 33 moves downward, the adjusting rod 46 contacts the guide plate 37 and... Under the action of the inclined surface 35, the third scraping plate is moved away from the lower cover plate 3. After the adjusting rod 46 moves to the uppermost end of the adjusting block 33, as the adjusting block 33 continues to move downward, the lower cover plate 3 contacts the third scraping plate and performs scraping operation. At this time, the adjusting rod 46 moves between the adjusting block 33 and the first limiting plate 39. After moving to the position of the guide plate 37, it drives the guide plate 37 to rotate around the second rotating shaft, stretching the support elastic ring 38. After the adjusting rod 46 disengages from the guide plate 37, the guide plate 37 returns to its original position, waiting for the next scraping operation.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A flue gas recovery and charcoal production device based on biomass fuel, comprising a flue gas collection cylinder (1), characterized in that, The flue gas collection cylinder (1) is provided with an upper cover (2) and a lower cover (3). The upper cover (2) is fixedly connected to an external device. The upper cover (2) is connected to an external device through an air inlet pipe (4). The lower cover (3) is connected to an external device through an air outlet pipe (5). The flue gas collection cylinder (1) is provided with a rotating cylinder (6). The outer wall of the rotating cylinder (6) is in contact with the inner wall of the flue gas collection cylinder (1). The rotating cylinder (6) is connected to the flue gas collection cylinder (1) through a rotating unit. The rotating cylinder (6) is provided with a first scraping unit for scraping the inner wall of the rotating cylinder (6). The upper cover (2) is fixedly connected with a first cylinder (7). The output end of the first cylinder (7) is fixedly connected with an inner scraper (8). The inner scraper (8) is used to scrape the inner wall of the flue gas collection cylinder (1).

2. The flue gas recovery and charcoal production equipment based on biomass fuel as described in claim 1, characterized in that, The outer wall of the rotating cylinder (6) is fixedly connected with an annular snap-fit ​​protrusion (9), and the inner wall of the flue gas collecting cylinder (1) is provided with an annular snap-fit ​​groove (10) that cooperates with the annular snap-fit ​​protrusion (9).

3. The flue gas recovery and charcoal production equipment based on biomass fuel as described in claim 1, characterized in that, The first scraping unit includes a first scraper (11) fixedly connected to the inner side of the upper cover (2), and a scraping protrusion (12) is connected to the first scraper (11).

4. The flue gas recovery and charcoal production equipment based on biomass fuel as described in claim 1, characterized in that, The rotating unit includes a first motor (13), which is fixedly connected to the flue gas collection cylinder (1) via a first connecting rod (14). A first gear (15) is fixedly connected to the output end of the first motor (13). A first tooth (16) is provided on the side of the first gear (15). The rotating cylinder (6) extends out of the upper cover (2). A second tooth (17) is provided on the inner wall of the rotating cylinder (6) to mesh with the first tooth (16).

5. The flue gas recovery and charcoal production equipment based on biomass fuel as described in claim 1, characterized in that, The side of the lower cover (3) is fixedly connected to a second connecting rod (18), and the second connecting rod (18) is fixedly connected to the output end of the second cylinder (25). The lower cover (3) is provided with a second scraping unit for scraping the side of the inner scraper (8).

6. The flue gas recovery and charcoal production equipment based on biomass fuel as described in claim 5, characterized in that, The second scraping unit includes a first connecting plate (19) fixedly connected to the lower cover (3), a first guide rod (20) inserted on the first connecting plate (19), a second scraper (21) fixedly connected to one end of the first guide rod (20), a second connecting plate (22) fixedly connected to the other end of the first guide rod (20), the side of the second connecting plate (22) being connected to the side of the first connecting plate (19) by a first spring (23) for providing elastic force, the first spring (23) being sleeved on the outside of the first guide rod (20), and a scraping strip (24) fixedly connected to the second scraper (21).

7. The flue gas recovery and charcoal production equipment based on biomass fuel as described in claim 5, characterized in that, The second cylinder (25) is connected to the third connecting plate (26) through the first adjusting unit. The third connecting plate (26) is connected to an external device. The third connecting plate (26) is connected to a third scraping unit for scraping the lower cover (3) through the second adjusting unit.

8. The flue gas recovery and charcoal production equipment based on biomass fuel as described in claim 7, characterized in that, The first adjustment unit includes two symmetrically arranged fourth connecting plates (27) fixedly connected to the third connecting plate (26). A second motor (28) is fixedly connected to one of the fourth connecting plates (27). A reciprocating screw (29) is fixedly connected to the output end of the second motor (28). The reciprocating screw (29) is rotatably connected to the fourth connecting plate (27). A reciprocating slider (30) is sleeved on the outer side of the reciprocating screw (29). A first limiting rod (31) is fixedly connected between the two fourth connecting plates (27). The first limiting rod (31) passes through the reciprocating slider (30). The second cylinder (25) is fixedly connected to the reciprocating slider (30).

9. The flue gas recovery and charcoal production equipment based on biomass fuel as described in claim 7, characterized in that, The second adjustment unit includes a third connecting rod (32) fixedly connected to the reciprocating slider (30). An adjustment block (33) is fixedly connected to the end of the third connecting rod (32). A through groove (34) for the third connecting rod (32) to pass through is provided on the third connecting plate (26). An inclined surface (35) is provided on the adjustment block (33). Guide plates (37) are rotatably connected to the upper and lower sides of the adjustment block (33) through a first rotating shaft (36). The inward side of the guide plate (37) is connected to the adjustment block (33) through a support elastic ring (38). A first limiting plate (39) is fixedly connected to the third connecting plate (26).

10. A flue gas recovery and charcoal production device based on biomass fuel as described in claim 9, characterized in that, The third scraping unit includes a fifth connecting plate (40) fixedly connected to the side of the first limiting plate (39). A second guide rod (41) is inserted into the fifth connecting plate (40). A sixth connecting plate (42) is sleeved on the outside of the second guide rod (41). A third scraper (43) is fixedly connected to one end of the second guide rod (41). A seventh connecting plate (44) is fixedly connected to the other end of the second guide rod (41). The side of the sixth connecting plate (42) is connected to the side of the seventh connecting plate (44) through a second spring (45) for providing elasticity. The second spring (45) is sleeved on the outside of the second guide rod (41). An adjusting rod (46) is fixedly connected to the side of the sixth connecting plate (42) facing the third connecting plate (26).

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