A drying device for fuel obtained by biomass pyrolysis

Abstract

The present invention discloses a drying device for fuel obtained by biomass pyrolysis method, and relates to the technical field of preheating and drying equipment for raw materials of biomass pyrolysis method, including a pyrolysis reactor, one end of the pyrolysis reactor is fixedly connected to a gasifier, the outer wall of the gasifier is fixedly connected to an air inlet pipe and a steam pipe, one end of the steam pipe is connected to the air inlet pipe, and also includes an air intake mechanism and a scraping mechanism. The present invention sets an air intake mechanism and a scraping mechanism, the operation of the motor drives the screw rod to rotate, the rotation of the screw rod drives the connecting block to slide in the connecting groove, the displacement of the connecting block drives the scraper to move, and the displacement of the scraper pushes the biomass raw material to move, so that the biomass raw material is evenly distributed on the top of the support plate, and the high-temperature combustion gas generated in the gasifier enters the support plate and is discharged through the circular hole, so that the biomass raw material on the support plate is evenly dried.

Description

Technical Field

[0001] The invention relates to the technical field of preheating and drying equipment for raw materials of biomass pyrolysis method, in particular to a drying device for fuel obtained by biomass pyrolysis method. Background Art

[0002] Biomass thermal cracking (also known as pyrolysis or cracking) usually refers to the process in which biomass raw materials are heated and heated to cause molecular decomposition to produce coke, condensable liquids and gas products in an oxygen-free or low-oxygen environment. It is an important form of biomass energy utilization. The two-step biomass pyrolysis gasification process is a new type of gasification method specially developed by the applicant in view of the characteristics of biomass raw materials such as a wide variety, high moisture content and low calorific value. This process can use a dry flow pyrolysis reactor to dry and preheat the biomass raw materials entering the gasifier at 500-600 degrees Celsius, so that the moisture and other volatile components (tar and other substances) in the biomass raw materials are removed, so that it can become a semi-carbonized state during the gasification process, which increases the efficiency of the reaction and improves the quality of the fuel gas.

[0003] During the drying process, high-temperature combustion gas is generated in the gasifier, and the temperature of the high-temperature combustion gas is between 400-600 degrees Celsius. The high-temperature combustion gas enters the pyrolysis reactor and exchanges heat with the biomass raw materials through the temperature of the combustible gas, thereby achieving dry distillation pyrolysis reaction. However, during the reaction, the biomass raw materials are directly transported to the pyrolysis reactor through the feed port, and the distribution is uneven, which easily leads to uneven heating of the biomass raw materials and affects the reaction effect.

[0004] In order to achieve the purpose of uniformly drying the biomass raw materials in the pyrolysis reactor, a drying device for fuel produced by biomass pyrolysis is provided. Summary of the invention

[0005] The purpose of the present invention is to provide a drying device for fuel produced by biomass pyrolysis in order to achieve the purpose of uniformly drying the biomass in a pyrolysis reactor.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a drying device for fuel obtained by biomass pyrolysis method, comprising a pyrolysis reactor, an outer wall of the pyrolysis reactor is provided with an electric heating interlayer, and an electric heating device is provided in the electric heating interlayer; one end of the pyrolysis reactor is fixedly connected to a gasifier, the outer wall of the gasifier is fixedly connected to an air inlet pipe and a steam pipe, one end of the steam pipe is connected to the air inlet pipe, and a fan is installed on the outer wall of the air inlet pipe; the top of the pyrolysis reactor is fixedly connected to a feed port and an exhaust pipe, the exhaust pipe is located on one side of the feed port, and the high-temperature combustion gas in the gasifier passes through An air intake mechanism enters into the pyrolysis reactor, and the biomass in the pyrolysis reactor is evenly distributed by a scraping mechanism; the air intake mechanism includes a fixed ring, which is fixedly connected to the outer wall of one end of the gasifier, and a support plate with a hollow cavity is fixedly connected to the bottom end of the inner wall of the pyrolysis reactor. A baffle is rotatably connected to the connection position between the inner cavity of the gasifier and the pyrolysis reactor, and a rotating block is fixedly connected to one end of the baffle, and the rotating block is located at the inner ring of the fixed ring. A circular hole is provided at the top of the support plate, a connecting port is provided at one end of the support plate, and a positioning groove is provided at the bottom end of the inner wall of the fixed ring.

[0007] As a further solution of the present invention: the air intake mechanism also includes an air intake port, which is opened at the bottom end of the baffle, and the interior of the baffle is located at the top of the air intake and is rotatably connected to a rotating column, one end of the rotating column is located at the outer wall of the baffle, and the outer wall of the rotating column is fixedly connected to a spur gear, and a connecting groove is opened inside the rotating column, and a positioning frame is slidably connected to the interior of the baffle and the rotating block, and the positioning frame is in an inverted "L" shape, and the horizontal end of the positioning frame extends from the rotating block, and a positioning spring is connected between the horizontal end of the positioning frame and the baffle; a positioning protrusion that can be inserted into the inverted positioning groove is provided at the lower part of the horizontal end of the positioning frame.

[0008] As a further solution of the present invention: the scraping mechanism includes a scraper and a push plate, and the scraper and the push plate are arranged on one end of the inner wall of the pyrolysis reactor away from the gasification furnace, the scraper is located at the top of the push plate, and a connecting groove is provided at the top of the inner wall of the pyrolysis reactor, and a connecting block is fixedly connected to the top of the inner wall of the scraper, and a motor is installed on the outer wall of the pyrolysis reactor, and a screw rod is connected to the output end of the motor, and the screw rod runs through the connecting block.

[0009] As a further scheme of the present invention: the scraping mechanism also includes a slot, which is opened at the bottom end of the scraper plate, and the push plate is slidably connected to the inside of the push plate with an insert block extending from the push plate, and a connecting spring is connected between the insert block and the push plate, and the inner wall of the pyrolysis reactor is symmetrically provided with horizontal grooves for the insert block to slide, and one end of the horizontal groove is provided with a vertical groove, and the pyrolysis reactor is slidably connected to the inside of the pyrolysis reactor with a movable block, and a reset spring is connected between the movable block and the pyrolysis reactor, and the outer wall of the movable block is fixedly connected with a protrusion extending to the inner cavity of the vertical groove, and the interior of the pyrolysis reactor is slidably connected with a push rod on one side of the movable block, and the push rod extends to the inner cavity of the gasifier.

[0010] As a further solution of the present invention: the inner wall of the fixing ring is in contact with the outer wall of the rotating block, and the inner wall of the positioning groove is in contact with the outer wall of the positioning frame.

[0011] As a further solution of the present invention: the outer wall of the positioning frame is provided with gear teeth, and the gear teeth are meshed with the spur gear.

[0012] As a further solution of the present invention: the inner wall of the connecting groove is L-shaped, and a plurality of circular holes are provided and equidistantly distributed on the top of the support plate.

[0013] As a further solution of the present invention: the inner wall of the connecting groove is in contact with the outer wall of the rotating block, and the outer wall of the connecting block is provided with a threaded hole, and the threaded hole matches the screw rod.

[0014] As a further solution of the present invention: the inner wall of the slot is in contact with the top outer wall of the insert block, and the outer wall of the insert block is in contact with the inner walls of the transverse groove and the vertical groove.

[0015] As a further solution of the present invention: the top end of the movable block is provided with an inclined surface, and the outer wall of the push rod is in contact with the inclined surface.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. By setting up the air intake mechanism and the scraping mechanism, the motor drives the screw to rotate, the screw rotation drives the connecting block to slide in the connecting groove, the displacement of the connecting block drives the scraper to move, the displacement of the scraper pushes the biomass raw material to move, so that the biomass raw material is evenly distributed on the top of the support plate, the high-temperature combustion gas generated in the gasifier enters the support plate, and then is discharged through the circular hole, so that the biomass raw material on the support plate is evenly dried.

[0018] 2. When the biomass raw materials are dried to the semi-dry charcoal form, the scraper is used to connect and drive the push plate to put the biomass raw materials into the gasifier. The reasonable structural design makes the operation more efficient and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 It is a schematic diagram of the internal structure of the pyrolysis reactor of the present invention;

[0021] Figure 3 It is a schematic diagram of the split structure of the support plate and the baffle plate of the present invention;

[0022] Figure 4 It is a schematic diagram of the internal structure of the baffle of the present invention;

[0023] Figure 5 It is a schematic diagram of the internal structure of the rotating column of the present invention;

[0024] Figure 6 It is a schematic diagram of the installation structure of the scraper and the push plate of the present invention;

[0025] Figure 7 It is a schematic diagram of the internal structure of the scraper and pusher of the present invention;

[0026] Figure 8 It is a schematic diagram of the installation position of the movable block of the present invention;

[0027] Fig. 9 It is a schematic diagram of the installation position of the push rod of the present invention.

[0028] In the figure: 1, pyrolysis reactor; 2, gasification furnace; 3, air inlet pipe; 4, fan; 5, steam pipe; 6, feed port; 7, exhaust pipe; 8, air inlet mechanism; 801, fixed ring; 802, support plate; 803, baffle; 804, rotating block; 805, round hole; 806, connection port; 807, positioning groove; 808, air inlet; 809, positioning frame; 810, positioning spring; 811, rotating column; 81 2. Spur gear; 813. Connecting groove; 814. Positioning protrusion; 9. Scraping mechanism; 901. Scraper; 902. Push plate; 903. Connecting groove; 904. Connecting block; 905. Motor; 906. Screw; 907. Slot; 908. Insert; 909. Connecting spring; 910. Horizontal groove; 911. Vertical groove; 912. Movable block; 913. Reset spring; 914. Protrusion; 915. Push rod. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0031] See also Figures 1 to 9 In an embodiment of the present invention, a drying device for fuel obtained by biomass pyrolysis method includes a pyrolysis reactor 1, an outer wall of the pyrolysis reactor 1 is provided with an electric heating interlayer, and an electric heating device is provided in the electric heating interlayer; one end of the pyrolysis reactor 1 is fixedly connected to a gasifier 2, the outer wall of the gasifier 2 is fixedly connected to an air inlet pipe 3 and a steam pipe 5, one end of the steam pipe 5 is connected to the air inlet pipe 3, and a fan 4 is installed on the outer wall of the air inlet pipe 3; the top of the pyrolysis reactor 1 is fixedly connected to a feed port 6 and an exhaust pipe 7, and the exhaust pipe 7 is located on one side of the feed port 6, and the high-temperature combustion gas in the gasifier 2 enters the pyrolysis reactor 1 through an air intake mechanism 8, and the biomass in the pyrolysis reactor 1 is evenly distributed through a scraping mechanism 9.

[0032] In this embodiment, the biomass raw material enters the pyrolysis reactor 1 through the feed port 6, undergoes dry distillation and pyrolysis reaction, and the biomass raw material after dry distillation and pyrolysis is generated in the form of semi-dry charcoal, and enters the gasifier 2 for gasification reaction. The furnace body of the gasifier can generate 0.01 MPa steam, which is mixed with air and added into the furnace as a gasifying agent to react with the dry biomass charcoal after dry distillation and pyrolysis to generate: CO, H 2 , CH4 Combustible gases such as carbon dioxide and carbon dioxide can be used directly or as a source of fuel for various industrial kilns and chemical industries after purification. The pyrolysis reactor 1 can use its own electric heating device or the high-temperature gas heat energy in the gasifier 2 to preheat and dry the biomass raw materials. The combination of the two energy sources can not only ensure the stability of the device operation and resist the temperature fluctuations caused by the surrounding climate change, but also make full use of the gas heat energy to achieve resource conservation and efficient utilization.

[0033] Please refer to Figures 1 to 5 The air intake mechanism 8 includes a fixed ring 801, which is fixedly connected to the outer wall of one end of the gasifier 2, and a support plate 802 with a hollow cavity is fixedly connected to the bottom end of the inner wall of the pyrolysis reactor 1. A baffle 803 is rotatably connected to the connection position between the inner cavity of the gasifier 2 and the pyrolysis reactor 1, and a rotating block 804 is fixedly connected to one end of the baffle 803. The rotating block 804 is located in the inner circle of the fixed ring 801. A circular hole 805 is opened at the top of the support plate 802, and a connecting port 806 is opened at one end of the support plate 802. A positioning groove 807 is opened at the bottom end of the inner wall of the fixed ring 801. The air intake mechanism 8 also includes an air inlet 808, which is opened at the bottom end of the baffle 803. The interior of the plate 803 is located at the top of the air inlet 808 and is rotatably connected to a rotating column 811, one end of the rotating column 811 is located on the outer wall of the baffle 803, the outer wall of the rotating column 811 is fixedly connected to a spur gear 812, a connecting groove 813 is provided inside the rotating column 811, and the baffle 803 and the rotating block 804 are internally slidably connected with a positioning frame 809, the positioning frame 809 is in an inverted "L" shape, the horizontal end of the positioning frame 809 extends out of the rotating block 804, and a positioning spring 810 is connected between the horizontal end of the positioning frame 809 and the baffle 803; the lower part of the horizontal end of the positioning frame 809 is provided with a positioning protrusion 814 that can be inserted into the inverted positioning groove 807.

[0034] In this embodiment, the baffle 803 is rotated to connect or isolate the pyrolysis reactor 1 and the gasifier 2; when the baffle 803 is closed, the direction of the baffle 803 is downward, and the direction of the positioning frame 809 is downward. The positioning frame 809 moves downward under the elastic force of the positioning spring 810, so that the positioning protrusion 814 is engaged into the positioning groove 807, and the rotating block 804 and the fixing ring 801 are fixed, thereby fixing the position of the baffle 803. At the same time, the displacement of the positioning frame 809 drives the spur gear 812 to rotate, and the rotation of the spur gear 812 drives the rotating column 811 to rotate. The rotation of the rotating column 811 makes the connecting groove 813 connected with the air inlet 808, and the air inlet 808 is connected with the connecting port 806 through the connecting groove 813. The high-temperature fuel gas enters the support plate 802 through the air inlet 808, the connecting groove 813 and the connecting port 806, and then is discharged through the circular hole 805, so as to uniformly contact and react with the biomass raw materials on the support plate 802.

[0035] Please refer to Figures 6 to 9 The scraping mechanism 9 includes a scraper 901 and a push plate 902. The scraper 901 and the push plate 902 are arranged at the inner wall of the pyrolysis reactor 1 at one end away from the gasification furnace 2. The scraper 901 is located at the top of the push plate 902. A connecting groove 903 is provided at the top of the inner wall of the pyrolysis reactor 1. A connecting block 904 is fixedly connected to the top of the inner wall of the scraper 901. A motor 905 is installed on the outer wall of the pyrolysis reactor 1. A screw rod 906 is connected to the output end of the motor 905. The screw rod 906 runs through the connecting block 904. The scraping mechanism 9 also includes a slot 907. The slot 907 is provided at the bottom end of the scraper 901. The inner sliding connection of the push plate 902 is provided with an extension slot. An insert block 908 is inserted into the push plate 902, and a connecting spring 909 is connected between the insert block 908 and the push plate 902. Transverse grooves 910 for sliding of the insert block 908 are symmetrically provided on both sides of the inner wall of the pyrolysis reactor 1, and a vertical groove 911 is provided at one end of the transverse groove 910. A movable block 912 is slidably connected to the inside of the pyrolysis reactor 1, and a return spring 913 is connected between the movable block 912 and the pyrolysis reactor 1. A protrusion 914 extending to the inner cavity of the vertical groove 911 is fixedly connected to the outer wall of the movable block 912, and a push rod 915 is slidably connected to the inside of the pyrolysis reactor 1 on one side of the movable block 912, and the push rod 915 extends to the inner cavity of the gasifier 2.

[0036] In this embodiment, the biomass raw material enters the pyrolysis reactor 1 through the feed port 6 and falls on the support plate 802. When the baffle 803 is closed, the baffle 803 pushes the top rod 915 to move, and the displacement of the top rod 915 pushes the movable block 912 to move, causing the return spring 913 to be squeezed. The displacement of the movable block 912 drives the protrusion 914 to move, and the displacement of the protrusion 914 pushes the plug 908 to move downward, causing the connection spring 909 to be squeezed, and the plug 908 moves out of the slot 907, so that the scraper 901 and the pusher The plate 902 is separated, and the motor 905 can be started at this time. The motor 905 drives the screw rod 906 to rotate, and the screw rod 906 rotates to drive the connecting block 904 to slide in the connecting groove 903. The displacement of the connecting block 904 drives the scraper 901 to move, and the displacement of the scraper 901 pushes the biomass to move, so that the biomass is evenly distributed on the top of the supporting plate 802, and then the motor 905 rotates in the opposite direction, driving the scraper 901 to return to the initial position and be located directly above the push plate 902 (at this time, the plug block 908 is still at the lower limit position).

[0037] When the biomass raw materials in the pyrolysis reactor 1 need to be moved into the gasifier 2, first push the positioning frame 809 upwards to make the positioning protrusion 814 disengage from the positioning groove 807, release the fixation between the rotating block 804 and the fixed ring 801, and then rotate the rotating block 804 (a square plug rod can be used to insert the rotating block 804 into the square slot hole at the horizontal end of the positioning frame 809, and the rotating block 804 can be rotated synchronously; the end of the rotating block 804 can also be made to protrude outward from the outer end surface of the fixed ring 801, in which case it is sufficient to directly rotate the rotating block 804), thereby rotating and opening the baffle 803, and the movable block 912 is reset by the elastic force of the reset spring 913, and the plug block 908 is reset by the elastic force of the connecting spring 909, and inserted into the slot 907 to fix the scraper 901 and the push plate 902. Then, the motor 905 is started, and the operation of the motor 905 drives the scraper 901 to move, and the movement of the scraper 901 drives the push plate 902 to move synchronously. At this time, the plug block 908 is guided and slid in the horizontal groove 910, and the push plate 902 pushes the biomass into the gasifier 2. This design facilitates the biomass to be evenly distributed on the top of the support plate 802 through the movement of the scraper 901. The high-temperature combustion gas generated in the gasifier 2 enters the support plate 802 and is then discharged through the circular hole 805, so that the biomass on the support plate 802 is uniformly reacted, and the biomass in the pyrolysis reactor 1 is uniformly dried. When the biomass raw material is dried to a semi-dry charcoal form, the scraper 901 is used to connect and drive the push plate 902 to put the biomass raw material into the gasifier 2, which is efficient and convenient.

[0038] Please refer to Figures 1 to 5 The inner wall of the fixing ring 801 fits with the outer wall of the rotating block 804 , and the inner wall of the positioning groove 807 fits with the outer wall of the positioning frame 809 .

[0039] In this embodiment: the baffle plate 803 drives the rotating block 804 to rotate in the fixed ring 801. When the baffle plate 803 is closed, the direction of the baffle plate 803 is downward, and the direction of the positioning frame 809 is downward. The positioning frame 809 is engaged into the positioning groove 807 by the elastic force of the positioning spring 810, and fixes the rotating block 804 and the fixed ring 801, thereby fixing the position of the baffle plate 803.

[0040] Please refer to Figures 1 to 5 The outer wall of the positioning frame 809 is provided with gear teeth, which mesh with the spur gear 812. The inner wall of the connecting groove 813 is L-shaped, and a plurality of circular holes 805 are provided and evenly distributed at the top of the support plate 802.

[0041] In this embodiment: the displacement of the positioning frame 809 drives the spur gear 812 to rotate, the rotation of the spur gear 812 drives the rotating column 811 to rotate, the rotation of the rotating column 811 makes the connecting groove 813 communicate with the air inlet 808, the air inlet 808 is connected with the connecting port 806 through the connecting groove 813, and the high-temperature combustion gas enters the support plate 802 through the air inlet 808, the connecting groove 813 and the connecting port 806, and is then discharged through the circular hole 805.

[0042] Please refer to Figures 6 to 9 The inner wall of the connecting groove 903 fits with the outer wall of the rotating block 804 , and the outer wall of the connecting block 904 is provided with a threaded hole, which matches the screw rod 906 .

[0043] In this embodiment: the motor 905 is started, the motor 905 rotates to drive the screw rod 906 to rotate, the screw rod 906 rotates to drive the connecting block 904 to slide in the connecting groove 903, and the displacement of the connecting block 904 drives the scraper 901 to move.

[0044] Please refer to Figures 6 to 9 The inner wall of the slot 907 fits with the top outer wall of the insert block 908 , and the outer wall of the insert block 908 fits with the inner walls of the horizontal groove 910 and the vertical groove 911 .

[0045] In this embodiment: when the baffle 803 is closed, the baffle 803 pushes the push rod 915 to move, the displacement of the push rod 915 pushes the movable block 912 to move, the displacement of the movable block 912 drives the protrusion 914 to move, the displacement of the protrusion 914 pushes the plug block 908 to move downward, causing the connecting spring 909 to be squeezed, and the plug block 908 moves out of the slot 907, so that the scraper 901 is separated from the push plate 902; when the baffle 803 is opened, the movable block 912 is reset by the elastic force of the reset spring 913, and the plug block 908 is reset by the elastic force of the connecting spring 909, and is inserted into the slot 907 to fix the scraper 901 and the push plate 902.

[0046] Please refer to Figures 6 to 9 The top end of the movable block 912 is provided with an inclined surface, and the outer wall of the push rod 915 contacts the inclined surface.

[0047] In this embodiment: when the baffle 803 is closed, the baffle 803 pushes the push rod 915 to move, and the push rod 915 moves and contacts the inclined surface of the movable block 912, pushing the movable block 912 to move, squeezing the return spring 913, and the displacement of the movable block 912 drives the protrusion 914 to move.

[0048] What has been described above are only preferred specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, can make equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A drying device for fuel obtained by biomass pyrolysis, comprising a pyrolysis reactor (1), the outer wall of the pyrolysis reactor (1) being provided with an electric heating interlayer, and an electric heating device being provided in the electric heating interlayer; one end of the pyrolysis reactor (1) being fixedly connected to a gasifier (2), the outer wall of the gasifier (2) being fixedly connected to an air inlet pipe (3) and a steam pipe (5), one end of the steam pipe (5) being connected to the air inlet pipe (3), the outer wall of the air inlet pipe (3) being provided with a fan (4), the top end of the pyrolysis reactor (1) being fixedly connected to a feed port (6) and an exhaust pipe (7), the exhaust pipe (7) being located on one side of the feed port (6), It is characterized in that The high-temperature combustion gas in the gasifier (2) enters the pyrolysis reactor (1) through an air intake mechanism (8), and the biomass in the pyrolysis reactor (1) is evenly distributed through a scraping mechanism (9); the air intake mechanism (8) comprises a fixing ring (801), the fixing ring (801) is fixedly connected to the outer wall of one end of the gasifier (2), a support plate (802) with a hollow cavity is fixedly connected to the bottom end of the inner wall of the pyrolysis reactor (1), a baffle (803) is rotatably connected to the connection position between the inner cavity of the gasifier (2) and the pyrolysis reactor (1), one end of the baffle (803) is fixedly connected to a rotating block (804), and the rotating block (804) is located on the inner ring of the fixing ring (801), a circular hole (805) is provided at the top end of the support plate (802), a connection port (806) is provided at one end of the support plate (802), and a positioning groove (807) is provided at the bottom end of the inner wall of the fixing ring (801); The air intake mechanism (8) further comprises an air intake port (808), the air intake port (808) being disposed at the bottom end of the baffle plate (803), a rotating column (811) being rotatably connected to the top end of the air intake port (808) inside the baffle plate (803), one end of the rotating column (811) being disposed on the outer wall of the baffle plate (803), a spur gear (812) being fixedly connected to the outer wall of the rotating column (811), and a connecting groove (812) being disposed inside the rotating column (811). 3) A positioning frame (809) is slidably connected inside the baffle (803) and the rotating block (804); the positioning frame (809) is in an inverted "L" shape; the horizontal end of the positioning frame (809) extends out of the rotating block (804); a positioning spring (810) is connected between the horizontal end of the positioning frame (809) and the baffle (803); a positioning protrusion (814) capable of being inserted into the positioning groove (807) is provided at the lower part of the horizontal end of the positioning frame (809); The scraping mechanism (9) comprises a scraper (901) and a push plate (902), the scraper (901) and the push plate (902) being arranged at an end of the inner wall of the pyrolysis reactor (1) away from the gasifier (2), the scraper (901) being located at the top of the push plate (902), a connecting groove (903) being provided at the top of the inner wall of the pyrolysis reactor (1), a connecting block (904) being fixedly connected to the top of the inner wall of the scraper (901), a motor (905) being installed at the outer wall of the pyrolysis reactor (1), a screw rod (906) being connected to the output end of the motor (905), and the screw rod (906) passing through the connecting block (904); The scraping mechanism (9) further comprises a slot (907), wherein the slot (907) is provided at the bottom end of the scraper (901), the push plate (902) is internally slidably connected to an insert block (908) extending from the push plate (902), a connecting spring (909) is connected between the insert block (908) and the push plate (902), and transverse grooves (910) for sliding of the insert block (908) are symmetrically provided on both sides of the inner wall of the pyrolysis reactor (1), and one end of the transverse groove (910) is provided with a A vertical groove (911) is provided, wherein a movable block (912) is slidably connected to the interior of the pyrolysis reactor (1), a return spring (913) is connected between the movable block (912) and the pyrolysis reactor (1), a protrusion (914) extending to the inner cavity of the vertical groove (911) is fixedly connected to the outer wall of the movable block (912), and a push rod (915) is slidably connected to one side of the movable block (912) inside the pyrolysis reactor (1), and the push rod (915) extends to the inner cavity of the gasifier (2).

2. A drying device for fuel obtained by biomass pyrolysis according to claim 1, It is characterized in that The inner wall of the fixing ring (801) fits with the outer wall of the rotating block (804), and the inner wall of the positioning groove (807) fits with the outer wall of the positioning frame (809).

3. A drying device for fuel obtained by biomass pyrolysis according to claim 1, It is characterized in that The outer wall of the positioning frame (809) is provided with gear teeth, and the gear teeth are meshed with the spur gear (812).

4. A drying device for fuel obtained by biomass pyrolysis according to claim 1, It is characterized in that The inner wall of the communication groove (813) is L-shaped, and a plurality of circular holes (805) are provided and are evenly distributed on the top of the support plate (802).

5. A drying device for fuel obtained by biomass pyrolysis according to claim 1, It is characterized in that The inner wall of the connecting groove (903) fits with the outer wall of the rotating block (804), and the outer wall of the connecting block (904) is provided with a threaded hole, which matches the screw rod (906).

6. A drying device for fuel obtained by biomass pyrolysis according to claim 1, It is characterized in that The inner wall of the slot (907) fits with the outer wall of the top of the insert block (908), and the outer wall of the insert block (908) fits with the inner walls of the transverse groove (910) and the vertical groove (911).

7. A drying device for fuel obtained by biomass pyrolysis according to claim 1, It is characterized in that The top end of the movable block (912) is provided with an inclined surface, and the outer wall of the push rod (915) is in contact with the inclined surface.

Images