Biomass pyrolysis gasification device

Abstract

The invention relates to the technical field of pyrolysis devices, in particular to a biomass pyrolysis gasification device which comprises a microwave heating reactor, a pretreatment mechanism and a driving mechanism, the pretreatment mechanism comprises a cutting reamer, and the cutting reamer can push materials to gather towards the center during cutting; the driving mechanism is used for driving the barrel to rotate around the horizontal axis and the vertical center line of the barrel so that materials in the barrel can make full contact with the cutting reamers, and meanwhile the materials gathered towards the center are dispersed outwards so that the materials in the barrel can be dispersed and gathered repeatedly. Materials entering the barrel are conveyed to the center of the barrel through the cutting reamers with the angles, and meanwhile the driving mechanism drives the barrel to horizontally rotate, so that the materials entering the barrel can be thrown away towards the two ends in the barrel under the action of centrifugal force; therefore, the materials can be repeatedly dispersed and gathered in the pretreatment mechanism, so that a more perfect and comprehensive crushing processing effect can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of pyrolysis devices, and particularly to a biomass pyrolysis gasification device. Background Art

[0002] Biomass pyrolysis gasification refers to the process of heating biomass such as crop straws, forestry waste, livestock manure, etc. to a relatively high temperature under anaerobic or limited oxygen conditions, causing it to undergo thermochemical reactions and converting it into products such as combustible gas, biochar, and tar.

[0003] In the prior art, biomass pyrolysis gasification requires adding biomass materials into a reaction vessel for pyrolysis gasification reactions. Before adding the biomass into the reaction vessel, the biomass materials usually need to be preliminarily processed. However, the existing preliminary processing operations often simply crush the biomass materials and cannot perform more comprehensive and perfect crushing and processing on the biomass materials. Therefore, it is easy to cause the pyrolysis gasification reaction of the biomass materials to be insufficient. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: In order to overcome the problem that in the prior art, the preliminary processing operation of biomass materials often simply crushes the biomass materials and cannot perform more comprehensive and perfect crushing and processing on the biomass materials, and thus it is easy to cause the pyrolysis gasification reaction of the biomass materials to be insufficient, a biomass pyrolysis gasification device is provided herein.

[0005] The technical solution adopted by the present invention to solve its technical problem is: A biomass pyrolysis gasification device, comprising:

[0006] A microwave heating reactor, inside which there is a reaction chamber for heating the materials for reaction.

[0007] A pretreatment mechanism, including a cylinder body. Both side walls at the two axial ends of the cylinder body are rotatably connected with rotating shafts. Cutting reamers are evenly arranged on the two rotating shafts, and the cutting reamers can push the materials to gather towards the center during cutting.

[0008] And a driving mechanism, which is connected between the microwave heating reactor and the pretreatment mechanism and is used to drive the cylinder body to rotate around its horizontal axis and vertical center line, so that the materials in the cylinder body can fully contact the cutting reamers, and at the same time, the materials gathered towards the center are dispersed outwards to make the materials in the cylinder body disperse and gather repeatedly.

[0009] Further, the driving mechanism includes a carrier seat fixedly installed on the outer peripheral wall at the upper end of the microwave heating reactor and a carrier plate rotatably connected to the upper end of the carrier seat. Brackets are installed at both ends of the carrier plate, and the cylinder body is rotatably installed between the two brackets.

[0010] Further, the carrier tray is provided with tooth grooves, one side of the carrier seat is provided with an open slot, a transmission gear is arranged in the open slot, and the transmission gear meshes with the tooth grooves to drive the carrier tray to rotate around its vertical center line.

[0011] Further, it also includes a heat dissipation mechanism located at the outlet of the microwave heating reactor for cooling the material.

[0012] Further, the heat dissipation mechanism includes a support seat fixed to the bottom of the microwave heating reactor, a ring seat installed on the support seat, and a plurality of fan blades slidably installed along the circumference of the ring seat.

[0013] Further, each fan blade is rotatably installed on a sliding seat through a rotating rod, and the sliding seat extends towards the center of the ring seat with a carrier plate. A driving motor is fixedly installed on the carrier plate. The transmission output end of the driving motor is fixedly connected with a worm, the bottom end of the worm is fixedly connected with a driving tooth seat, the ring seat is an annular tooth ring meshing with the driving tooth seat, and a worm gear meshing with the worm is fixedly installed on the rotating rod.

[0014] Further, central shafts are fixedly connected to the axial center parts at both ends of the cylinder body. The two central shafts correspond to the two brackets one by one, and each central shaft is erected on its corresponding bracket, and one of the central shafts is in transmission connection with a rotating motor;

[0015] A plurality of support rods are also fixedly installed on the outer peripheral part of the cylinder body where the central shaft is located, and the bracket is provided with a slide rail for the support rod to slide.

[0016] Further, a limiting part protrudes from one end of the support rod towards the bracket, and the cross section of the slide rail is a T-shaped structure matching the cross section of the support rod.

[0017] Further, the pretreatment mechanism also includes a transmission cover connected between the central shaft and the cylinder body. A cutting motor is installed inside the transmission cover, and there are two cutting motors corresponding to the two rotating shafts one by one.

[0018] Further, the bottom end of the sliding seat protrudes to form a T-shaped structure, and the ring seat is provided with a T-shaped chute for the sliding seat to be embedded.

[0019] The beneficial effects of the present invention are:

[0020] 1. In the present invention, cutting reamers are symmetrically arranged in the pretreatment mechanism to crush and process the biomass materials entering the cylinder. During the crushing process, the cutting reamers with an angle can transport the biomass materials entering the cylinder towards the central part of the cylinder. At the same time, the driving mechanism drives the cylinder to rotate horizontally, so that the materials entering the cylinder for processing can be thrown away towards both ends of the cylinder under the action of centrifugal force. In this operation mode, the centrifugal force generated by the horizontal rotation of the driving mechanism driving the pretreatment mechanism and the material transportation force generated by the high-speed rotation of the cutting reamers can alternately increase and decrease in sequence. Therefore, the materials can be repeatedly dispersed and gathered in the pretreatment mechanism, so as to achieve a more perfect and comprehensive crushing effect. Moreover, the cylinder can rotate axially around its horizontal axis, so that the materials in the cylinder can be in more sufficient contact with the cutting reamers during the crushing process, thereby further improving the pretreatment effect.

[0021] 2. In the present invention, by setting up a heat dissipation mechanism, the driving motor drives the driving tooth seat to rotate by driving the worm. Since the driving tooth seat meshes with the inner ring teeth of the ring seat, the driving tooth seat can rotate around the ring seat, and at the same time drive the sliding seat to slide annularly along the chute. And due to the meshing connection between the worm and the worm wheel, the worm wheel can transmit the power of the worm to the rotating rod, so that the rotating rod can drive the fan blades to rotate, thereby cooling the biomass materials discharged from the microwave heating reactor for subsequent transportation and utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the drawings and embodiments.

[0023] Figure 1 is a three-dimensional view of the overall structure of the present invention;

[0024] Figure 2 is an exploded structure schematic diagram of the pretreatment mechanism and the driving mechanism;

[0025] Figure 3 is a sectional view of the internal structure of the pretreatment mechanism;

[0026] Figure 4 is Figure 3 an enlarged schematic diagram of the structure at A in

[0027] Figure 5 is a schematic diagram of the internal structure of the pretreatment mechanism;

[0028] Figure 6 is a schematic diagram of the connection relationship between the cutting motor and the rotating shaft;

[0029] Figure 7 is a schematic diagram of the positional relationship between the support seat and the heat dissipation mechanism;

[0030] Figure 8 For Figure 7 The enlarged structural schematic diagram at position B in

[0031] In the figure:

[0032] 1. Support base;

[0033] 2. Microwave heating reactor;

[0034] 3. Pretreatment mechanism; 31. Cylinder body; 32. Rotating shaft; 33. Cutting reamer; 34. Cutting motor; 35. Opening; 36. Sealing door;

[0035] 4. Driving mechanism; 41. Carrier base; 42. Carrier plate; 43. Tooth groove; 44. Open slot; 45. Transmission gear; 46. Extension plate; 47. Bracket; 48. Slide rail; 49. Support rod; 410. Slide seat; 411. Transmission cover; 412. Central axis; 413. Rotating motor;

[0036] 5. Heat dissipation mechanism; 51. Ring base; 52. Chute; 53. Teeth; 54. Sliding seat; 55. Carrier plate; 56. Driving motor; 57. Worm; 58. Driving tooth seat; 59. Rotating rod; 510. Worm gear; 511. Blower fan. Specific implementation mode

[0037] Now, the present invention will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner. Therefore, they only show the components related to the present invention. Directions and references, such as up, down, left, right, etc., can only be used to assist in the description of the features in the drawings. Therefore, the following specific implementation modes are not adopted in a restrictive sense, and the scope of the claimed subject matter is only defined by the appended claims and their equivalent forms.

[0038] Example 1:

[0039] As Figures 1-3 shown, the present invention is a biomass pyrolysis and gasification device, including:

[0040] A microwave heating reactor 2, which has a reaction chamber for heating materials to enable their reaction inside, an inlet and an outlet communicating with the reaction chamber;

[0041] The pretreatment mechanism 3 includes a horizontally placed cylinder body 31. An opening 35 for the entry or discharge of materials is formed in the middle of the cylinder body 31. A closing door 36 is hinged on the opening 35 to control the opening and closing of the cylinder body 31, so as to control the entry and exit of materials. Rotating shafts 32 are rotatably connected to the side walls at both ends of the cylinder body 31 along its axial direction. A plurality of cutting reamers 33 are evenly arranged on the two rotating shafts 32. During the rotation of the cutting reamers 33, the biomass materials entering the cylinder body 31 can be crushed and processed. Moreover, the cutting reamers 33 have an angle and are symmetrically distributed, and they can push the materials towards the center during cutting.

[0042] And a driving mechanism 4, which is connected between the microwave heating reactor 2 and the pretreatment mechanism 3 and is used to drive the cylinder body 31 to rotate around its horizontal axis and vertical center line. When rotating around the horizontal axis, the materials in the cylinder body 31 can be fully contacted with the cutting reamers. When rotating around the vertical center line, the materials gathered towards the center can be dispersed outwards so that the materials in the cylinder body 31 are repeatedly dispersed and gathered.

[0043] First, rotate the cylinder body 31 around the horizontal axis until the opening 35 faces upwards. Open the closing door 36 and put in the materials. After putting in the materials, close the closing door 36. Then, the cutting reamers 33 act to crush and process the biomass materials entering the cylinder body 31. Since the cutting reamers 33 have an angle, during the high-speed operation, they have a material transportation effect similar to that of an auger, so that the biomass materials entering the cylinder body 31 can be transported towards the central part of the cylinder body 31 during the crushing and processing. At the same time, the driving mechanism 4 can drive the cylinder body 31 to rotate around the vertical center line to perform a horizontal rotation movement, so that the materials entering the cylinder body 31 for processing can be thrown away towards both ends of the cylinder body 31 under the action of centrifugal force. In this operation mode, the centrifugal force generated by the horizontal rotation of the driving mechanism 4 driving the pretreatment mechanism 3 and the material transportation force generated by the high-speed operation of the cutting reamers 33 can alternately increase and decrease in turn. Therefore, the materials can be repeatedly dispersed and gathered in the pretreatment mechanism 3, so as to achieve a more perfect and comprehensive crushing and processing effect. Moreover, the cylinder body 31 can perform an axial rotation movement around its horizontal axis, so that the materials in the cylinder body 31 can be more fully contacted with the cutting reamers 33 during the crushing and processing, thereby further improving the pretreatment processing effect.

[0044] In some examples, as Figure 2 shown, the driving mechanism 4 includes a carrier seat 41 fixedly installed on the outer peripheral wall of the upper end of the microwave heating reactor 2 and a carrier plate 42 rotatably connected to the upper end of the carrier seat 41. Extension plates 46 are formed at both ends of the carrier plate 42. A support 47 is fixedly installed on the outer edge plate. The cylinder body 31 is rotatably installed between the two supports 47 to realize its own rotation around the horizontal axis. At the same time, when the carrier plate 42 rotates, it can drive the cylinder body 31 to rotate around the vertical center line.

[0045] In some examples, such as Figure 2 shown, the carrier tray 42 is provided with a toothed groove 43, and an open groove 44 is provided on one side of the carrier base 41, that is, the carrier base 41 is of a C-shaped structure. A transmission gear 45 is arranged in the open groove 44. The transmission gear 45 meshes with the toothed groove 43 to drive the carrier tray 42 to rotate around its vertical center line. The power source of the transmission gear 45 can be connected to an external power source through a transmission component below it, which is used to drive the transmission gear 45 to rotate, so that the transmission gear 45 can drive the carrier tray 42 to rotate.

[0046] In some examples, such as Figure 1 shown, a heat dissipation mechanism 5 for cooling the material is further included at the outlet of the microwave heating reactor 2. After the material is heated and reacted in the microwave heating reactor 2 and discharged from the outlet, the temperature is still relatively high during the discharge process, which is not conducive to subsequent transportation and utilization. By setting the heat dissipation mechanism 5 at the outlet, the material can be quickly cooled.

[0047] In some examples, such as Figure 7 and Figure 8 shown, the heat dissipation mechanism 5 includes a support base 1 fixed to the bottom of the microwave heating reactor 2, an annular seat 501 installed on the support base 1, and a plurality of fan blades 511 slidably installed along the circumference of the annular seat 501. The number of fan blades 511 can be but is not limited to one, two, three, etc. The number of support bases 1 is at least two and is distributed at intervals along the circumference of the microwave heating reactor 2. The fan blades 511 can first rotate by themselves to dissipate heat from the material, and at the same time, they can "revolve" along the annular seat 501, so as to cool the material discharged from the outlet in all directions.

[0048] In some examples, such as Figure 8As shown, each leaf fan 511 is rotatably mounted on the sliding seat 54 through a rotating rod 59, that is, one end of the rotating rod 59 is rotatably connected to the sliding seat 54, and the other end is fixed to the leaf fan 511. Moreover, a carrier plate 55 extends from the sliding seat 54 towards the center of the ring seat 501. A driving motor 56 is fixedly installed on the carrier plate 55. The transmission output end of the driving motor 56 is fixedly connected to a worm 57, and the bottom end of the worm 57 is fixedly connected to a driving tooth seat 58. The ring seat 501 is an annular toothed ring meshing with the driving tooth seat 58, that is, the inner peripheral wall of the ring seat has a plurality of teeth 53 spaced along its circumference. And a worm gear 510 meshing with the worm 57 is fixedly installed in the middle of the rotating rod 59; in this embodiment, the driving motor 56 can drive the driving tooth seat 58 to perform a rotational motion through the worm 57. Since the driving tooth seat 58 meshes with the teeth 53 on the inner side wall of the ring seat 501, the rotating driving tooth seat 58 will displace along the inner side wall of the ring seat 501, and at the same time drive the sliding seat 54, the carrier plate 55 and the driving motor 56 to displace simultaneously. During this period, since the worm gear 510 meshes with the worm 57, the rotating worm 57 can transmit power to the worm gear 510, so that the rotating rod 59 can perform a rotational motion under the power transmission of the worm gear 510, thereby driving the leaf fan 511 to rotate, promoting the air flow around, generating wind, and cooling the biomass material discharged from the microwave heating reactor 2 for subsequent transportation and utilization.

[0049] In some examples, such as Figure 2 and Figure 3 As shown, central shafts 412 are fixedly connected to the axial center parts at both ends of the cylinder body 31. The two central shafts 412 correspond to the two brackets 47 one by one, and each central shaft 412 is mounted on its corresponding bracket 47. Each bracket 47 is provided with a perforation for the corresponding central shaft 412 to pass through. And one of the central shafts 412 is in transmission connection with a rotating motor 413. The rotating motor 413 drives the cylinder body 31 to perform a rotational motion around the horizontal axis through the central shaft 412, so as to realize the turning effect of the biomass material in the cylinder body 31, enabling the biomass material to come into more sufficient contact with the cutting reamer 33 during cutting and crushing, thereby further improving the pretreatment processing effect;

[0050] Such as Figures 2-4 As shown, a plurality of support rods 49 spaced along the circumference of the cylinder body 31 are also fixedly installed at the peripheral part of the cylinder body 31 around the central shaft 412. The number of support rods 49 can be but is not limited to two, three, four, etc. The bracket 47 is provided with a sliding rail 48 for the support rod 49 to slide. The sliding rail 48 is an annular track. The cooperation of the support rod 49 and the sliding rail 48 can provide an auxiliary support effect for the rotational motion of the cylinder body 31 around its horizontal axis to ensure the stability of its rotational motion.

[0051] In some examples, such asFigures 2-4 As shown, one end of the support rod 49 facing the bracket 47 protrudes to form a limiting portion, so as to form a support rod 49 with a T-shaped structure. The sliding rail 48 has a cross-section of a T-shaped structure matching that of the support rod 49. The T-shaped sliding rail 48 can limit the limiting portion inside it to improve the connection strength between the two, thereby avoiding unexpected detachment between the cylinder body 31 and the bracket 47 during the rotation process.

[0052] In some examples, such as Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the pretreatment mechanism 3 further includes a transmission cover 411 connected between the central shaft 412 and the cylinder body 31. A cutting motor 34 is installed inside the transmission cover 411. There are two cutting motors 34, which correspond to the two rotating shafts 32 one by one. Each cutting motor 34 drives the corresponding rotating shaft 32 to rotate, and the rotating shaft 32 drives the corresponding cutting reamer 33 to rotate for cutting. In this embodiment, the power of the central shaft 412 can be transmitted to the cylinder body 31 through the transmission cover 411, and at the same time, it is located at the connection part of the central shaft 412 and the cylinder body 31 on the axis, so as to accommodate the cutting motor 34, so that the cutting motor 34 can be used as a power source to drive the rotating shaft 32 and the cutting reamer 33 to perform a flexible and controllable rotational motion on the axis, meeting the controllable adjustment effect of the operating speed of the cutting reamer 33.

[0053] In some examples, such as Figure 8 As shown, the bottom end of the sliding seat 54 protrudes to form a T-shaped structure. The ring seat 501 is provided with a T-shaped sliding groove 52 for the sliding seat 54 to be embedded. The T-shaped sliding groove 52 can provide a limiting effect for the sliding displacement of the sliding seat 54 to avoid tipping. At the same time, a counterweight is installed on the side wall of the sliding seat 54 facing away from the carrier plate 55. The counterweight is used to increase the weight on the other side of the sliding seat 54, so as to make the force on the sliding seat 54 more balanced and ensure its stability during operation.

[0054] Working principle:

[0055] First, the cylinder 31 is rotated around the horizontal axis until the opening 35 faces upward, the closed door 36 is opened and the material is put in. After the material is put in, the closed door 36 is closed, and then the cutting reamer 33 is operated to crush the biomass material entering the cylinder 31. Since the cutting reamer 33 has an angle, it has a material conveying effect similar to that of an auger during high-speed operation, so that the biomass material entering the cylinder 31 can be conveyed to the center of the cylinder 31 during the crushing process. At the same time, the driving mechanism 4 can drive the cylinder 31 to rotate around the vertical center line to perform horizontal rotational motion, so that the material entered into the cylinder 31 for processing can be Under the action of centrifugal force, the materials are thrown away from the two ends of the cylinder 31. In this operation mode, the centrifugal force generated by the horizontal rotation of the pre-treatment mechanism 3 driven by the driving mechanism 4 and the material conveying force generated by the high-speed operation of the cutting reamer 33 can be alternately strengthened and weakened in turn, so that the materials can be repeatedly dispersed and gathered in the pre-treatment mechanism 3, so as to achieve a more complete and comprehensive crushing effect, and the cylinder 31 can perform axial rotation around its horizontal axis, so that the materials in the cylinder 31 can be more fully in contact with the cutting reamer 33 during the crushing process, thereby further improving the pre-treatment effect;

[0056] After the pretreatment is completed, the cylinder 31 is rotated around the horizontal axis until the opening 35 faces downward, and the closed door 36 is opened. The material enters the reaction chamber of the microwave heating reactor 2 from the opening 35 to be heated and undergo a thermochemical reaction. After the reaction is completed, the drive motor 56 is started. The drive motor 56 drives the drive gear seat 58 to rotate through the worm 57, and at the same time drives the sliding seat 54, the carrier plate 55 and the drive motor 56 to move simultaneously. At the same time, the rotating worm 57 can transmit power to the worm gear 510, and the rotating rod 59 rotates under the power transmission of the worm gear 510, thereby driving the blade fan 511 to rotate. Finally, the outlet of the microwave heating reactor 2 is opened, and the material is discharged from the outlet. The blade fan 511 cools the biomass material discharged from the microwave heating reactor 2 for subsequent transportation and utilization.

[0057] The above-mentioned ideal embodiments of the present invention are for inspiration. Through the above-mentioned description, relevant staff can make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A biomass pyrolysis gasification device, characterized in that: Comprising: A microwave heating reactor (2) with a reaction cavity formed inside for heating materials to react; A pretreatment mechanism (3) including a cylinder body (31). Both side walls at the two ends of the cylinder body (31) in the axial direction are rotatably connected with rotating shafts (32). Cutting reamers (33) are evenly arranged on the two rotating shafts (32), and the cutting reamers (33) can push the materials to gather towards the center during cutting; And a driving mechanism (4) connected between the microwave heating reactor (2) and the pretreatment mechanism (3) and used to drive the cylinder body (31) to rotate around its horizontal axis and vertical center line, so that the materials in the cylinder body (31) are in full contact with the cutting reamers, and at the same time, the materials gathered towards the center are dispersed outwards to make the materials in the cylinder body (31) disperse and gather repeatedly.

2. The biomass pyrolysis gasification device according to claim 1, characterized in that: The driving mechanism (4) includes a carrier seat (41) fixedly installed on the outer peripheral wall at the upper end of the microwave heating reactor (2) and a carrier plate (42) rotatably connected to the upper end of the carrier seat (41). Brackets (47) are installed at both ends of the carrier plate (42), and the cylinder body (31) is rotatably installed between the two brackets (47).

3. A biomass pyrolysis gasification device according to claim 2, characterized in that: The carrier plate (42) is provided with a toothed groove (43). An open groove (44) is provided on one side of the carrier seat (41). A transmission gear (45) is arranged in the open groove (44), and the transmission gear (45) meshes with the toothed groove (43) to drive the carrier plate (42) to rotate around its vertical center line.

4. A biomass pyrolysis gasification device according to claim 1, characterized in that: It further includes a heat dissipation mechanism (5) located at the outlet of the microwave heating reactor (2) for cooling the materials.

5. A biomass pyrolysis gasification device according to claim 4, characterized in that: The heat dissipation mechanism (5) includes a support seat (1) fixed to the bottom of the microwave heating reactor (2), a ring seat (501) installed on the support seat (1), and a plurality of blade fans (511) slidably installed along the circumference of the ring seat (501).

6. The biomass pyrolysis gasification device according to claim 5, characterized in that: Each blade fan (511) is rotatably installed on a sliding seat (54) through a rotating rod (59). The sliding seat (54) extends towards the center of the ring seat (501) with a carrier plate (55). A driving motor (56) is fixedly installed on the carrier plate (55). The transmission output end of the driving motor (56) is fixedly connected with a worm (57). The bottom end of the worm (57) is fixedly connected with a driving tooth seat (58). The ring seat (501) is an annular toothed ring meshing with the driving tooth seat (58), and a worm gear (510) meshing with the worm (57) is fixedly installed on the rotating rod (59).

7. A biomass pyrolysis gasification device according to claim 2, characterized in that: Both axial center parts at the two ends of the cylinder body (31) are fixedly connected with central shafts (412). The two central shafts (412) correspond to the two brackets (47) one by one, and each central shaft (412) is erected on its corresponding bracket (47), and one of the central shafts (412) is in transmission connection with a rotating motor (413); A plurality of support rods (49) are further fixedly installed on the outer peripheral part of the cylinder body (31) where the central shaft (412) is located. The bracket (47) is provided with a slide rail (48) for the support rod (49) to slide.

8. A biomass pyrolysis gasification device according to claim 7, characterized in that: One end of the support rod (49) facing the bracket (47) protrudes to form a limiting portion, and the sliding rail (48) has a T-shaped cross-section matching the cross-section of the support rod (49).

9. A biomass pyrolysis gasification device according to claim 7, characterized in that: The preprocessing mechanism (3) further includes a transmission cover (411) connected between the central shaft (412) and the cylinder body (31). A cutting motor (34) is installed inside the transmission cover (411). There are two cutting motors (34), which correspond to the two rotating shafts (32) one by one.

10. A biomass pyrolysis gasification device according to claim 6, characterized in that: The bottom end of the sliding seat (54) protrudes to form a T-shaped structure, and the ring seat (501) is provided with a T-shaped sliding groove (52) for the sliding seat (54) to be embedded.

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