An internal heating type activated carbon activation furnace

Abstract

This invention relates to the field of activated carbon processing technology, and more particularly to an internally heated activated carbon activation furnace, comprising an activation tank and impeller fans. A pair of impeller fans are provided, and a fixed frame is located behind the activation tank. The impeller fans are all bolted to the fixed frame, and a rear frame is located behind the fixed frame. This invention adopts a dual-exhaust structure, with independent impeller fans at the furnace head and furnace tail. The furnace head impeller fan is dedicated to extracting smoke and dust from the furnace entrance, while the furnace tail impeller fan maintains negative pressure in the furnace chamber. The airflow of the two paths can be precisely adjusted, and the system always maintains a slight negative pressure at the furnace entrance, preventing dust overflow and ensuring a clean workshop environment. Through the setting of the adjustment mechanism, when maintaining one impeller fan, only the other impeller fan needs to be controlled to increase its power. Using a pressure stabilizing tank, rapid switching of impeller fans can be achieved. Using a single impeller fan to operate the dual-exhaust structure allows for non-stop maintenance, ensuring continuous and efficient operation of the activation furnace, while reducing equipment investment and floor space.

Description

Technical Field

[0001] This invention relates to the field of activated carbon processing technology, and in particular to an internally heated activated carbon activation furnace. Background Technology

[0002] Activated carbon is used for adsorption and purification. It is made from coal through carbonization and activation. The internal heating activation furnace is a commonly used piece of equipment. The furnace body is tilted and rotated. The coal is heated to 800-1000℃ by its own volatiles and a small amount of air combustion in the furnace. At the same time, water vapor is injected to complete the activation. The main fan at the furnace head continuously draws away the flue gas, maintains the negative pressure in the furnace and recovers heat, in order to eliminate dust and CO overflow at the feed end.

[0003] The system can ensure environmental protection and temperature control, but the induced draft fan is in a dusty and tarry flue gas environment of 300-400℃ for a long time. The impeller and shell are prone to coke and ash accumulation, requiring monthly shutdown for coke removal and disassembly inspection. Each time is time-consuming, and the furnace pressure fluctuates greatly and the temperature drops sharply by 50℃ during the switching, resulting in uneven activation and reduced output. The existing technology lacks a means of maintenance without shutting down the system. The induced draft system must be completely shut down for cleaning, which has become a bottleneck for continuous production.

[0004] Therefore, an internally heated activated carbon activation furnace was proposed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of the prior art by proposing an internally heated activated carbon activation furnace.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: an internally heated activated carbon activation furnace, comprising an activation tank and an impeller fan, wherein a pair of impeller fans are provided, a fixed frame is provided behind the activation tank, and the impeller fans are all fixed to the fixed frame by bolts. A rear frame is provided behind the fixed frame, and a pressure stabilizing tank is fixedly connected to the top of the rear frame. Exhaust pipes are installed between the outlet of the impeller fan and the pressure stabilizing tank by bolts, and an air inlet pipe is installed at the air inlet end of the impeller fan by bolts. An adjusting block is fixedly connected to the front side of the fixed frame, and the adjusting block has a horizontal opening at the middle of its front side. The device is provided with a horizontal groove, and L-shaped grooves are provided on both sides of the horizontal groove. The other end of the air inlet pipe is fixedly connected to the side wall of the adjusting block, and the inner side of the L-shaped groove is connected to the inner side of the air inlet pipe. A fixing plate is fixedly connected to the front side of the adjusting block, and a sealing plate is installed on the front side of the fixing plate by bolts. A suction pipe is installed on the front side of the sealing plate relative to the bottom end of the L-shaped groove by bolts. The other ends of the two suction pipes are respectively fixedly connected to the inlet and outlet of the activation tank. An adjusting mechanism for adjusting the suction state is also provided, and a drive plate is provided on the fixing frame.

[0007] In the above technical solution, a main circular hole plate and a secondary circular hole plate are fixedly connected to the inner side of the L-shaped groove relative to the upper position of the horizontal groove, an upper arc-shaped groove is opened on the inner side of the L-shaped groove relative to the side of the horizontal groove, a lower arc-shaped groove is opened on both the upper and lower sides of the horizontal groove, a middle circular hole plate is fixedly connected to the middle of the inner side of the horizontal groove, and a circular hole is opened through the front side of the fixed plate relative to the rear position of the air intake pipe.

[0008] In the above technical solution, the adjusting mechanism further includes an electric telescopic cylinder. A support frame is fixedly connected to the top of the fixed frame. The electric telescopic cylinder is fixedly connected to the side wall of the support frame. The output end of the electric telescopic cylinder passes through the inner side of the support frame and is fixedly connected to the side wall of the drive plate. A flat groove and a pair of vertical grooves are respectively opened on the rear side of the fixed plate. A vertical plate is longitudinally slidably connected to the inner side of each vertical groove. An upper conical sealing block is fixedly connected to the top of each vertical plate. A horizontal plate is slidably connected to the inner side of the flat groove. A lower conical sealing block is fixedly connected to the side wall of the horizontal plate. A pair of front grooves are opened on the front side of the fixed plate, and the front grooves are connected to the flat groove and the vertical grooves. A round rod is fixedly connected to the front side of the vertical plate. An upper plate and an L-shaped plate are respectively provided on the inner side of the two front grooves. The upper plate is inclined on the side away from the horizontal plate. A right-angle plate with an inclined surface is fixedly connected to the inner side of the L-shaped plate. A release groove is opened on the rear side of the upper plate.

[0009] In the above technical solution, a push plate is fixedly connected to the front side of the horizontal plate, the push plate is fixedly connected to the side wall of the upper plate, a connecting rod is fixedly connected between the push plate and the L-shaped plate, and the connecting rod is sealed through the inner side of the front groove of the fixed plate. A drive rod is fixedly connected to the side wall of the L-shaped plate, and the drive rod is sealed through and slidably connected to the side wall of the fixed plate. The drive rod is fixedly connected to the side wall of the drive plate.

[0010] In the above technical solution, the release groove is further provided with an inclination on the side closer to the horizontal plate, and the bottom end of the release groove on the side away from the horizontal plate is also provided with an inclination.

[0011] In the above technical solution, both the upper conical sealing block and the lower conical sealing block are made of a double-layer composite material of silicone rubber and ceramic fiber felt, and a reset spring is fixedly connected between the bottom end of the vertical groove and the bottom end of the vertical plate.

[0012] In the above technical solution, each exhaust pipe is further provided with a push-button valve, a support frame is fixedly connected between the fixing frame and the rear frame, the exhaust pipe is disposed through the outer wall of the support frame, the push-button valve is disposed inside the support frame, a pressing block is laterally slidably connected to the inside of the support frame relative to the position of the push-button valve on the side away from the drive plate, both sides of the pressing block are inclined, a connecting plate is fixedly connected to the top of the pressing block, the connecting plate is fixedly connected to the side wall of the drive plate, and a right-angled block with an inclined surface is laterally slidably connected to the inside of the support frame relative to the position of another push-button valve.

[0013] In the above technical solution, there is a gap between the right-angle block and the press-type valve, the inclined surface of the extrusion block is in contact with the pressing point of the press-type valve, and the pressing point of the press-type valve is set as a smooth arc surface.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention adopts a dual-exhaust structure, with independent impeller fans at both the furnace head and tail. The furnace head impeller fan is dedicated to extracting smoke and dust from the furnace entrance, while the furnace tail impeller fan ensures negative pressure in the furnace chamber. The air volume of the two paths can be precisely adjusted, and the system always maintains a slight negative pressure at the furnace entrance, preventing dust from overflowing and ensuring a clean workshop environment. Through the setting of the adjustment mechanism, when maintaining one impeller fan, it is only necessary to control the other impeller fan to operate at increased power. By using a pressure stabilizing tank, the impeller fans can be quickly switched. Using a single impeller fan to operate the dual-exhaust structure, maintenance can be carried out without shutting down the system, ensuring continuous and efficient operation of the activation furnace, while reducing equipment investment and floor space.

[0015] 2. By using a push-button valve, connecting plate, and right-angle block, this invention can automatically block the channel between the impeller fan and the pressure tank while closing the corresponding impeller fan's air intake channel, thus facilitating quick maintenance by workers and further improving the device's convenience. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall appearance and structure of the activation tank of the present invention; Figure 2 This is a three-dimensional structural diagram of the fixing frame and the rear frame side of the present invention; Figure 3 This is a partial cross-sectional three-dimensional structural diagram of the support frame of the present invention. Figure 4 This is a frontal three-dimensional structural diagram of the adjusting block, fixing block, and sealing plate of the present invention. Figure 5 This is a three-dimensional structural diagram of the front of the adjusting block and fixing plate of the present invention; Figure 6 Appendix of the present invention Figure 5A magnified view of the structure at point A in the middle; Figure 7 This is a top-view perspective view of the exhaust pipe and connecting plate of the present invention. Figure 8 This is a rear-view perspective view of the fixed plate structure of the present invention; Figure 9 This is a bottom-view perspective view of the L-shaped plate and the secondary circular hole plate of the present invention. Figure 10 This is a schematic diagram of the overall appearance structure of the upper plate, the middle circular hole plate, and the main circular hole plate of the present invention.

[0017] In the diagram: 1. Activation tank; 2. Impeller fan; 3. Fixing frame; 4. Rear frame; 5. Pressure stabilizing tank; 6. Exhaust pipe; 7. Inlet pipe; 8. Adjusting block; 9. Horizontal groove; 10. L-shaped groove; 11. Fixing plate; 12. Sealing plate; 13. Suction pipe; 14. Main circular hole plate; 15. Secondary circular hole plate; 16. Upper arc groove; 17. Lower arc groove; 18. Drive plate; 19. Electric telescopic cylinder; 20. Support frame; 21. Middle circular perforated plate; 22. Vertical plate; 23. Upper conical sealing block; 24. Horizontal plate; 25. Lower conical sealing block; 26. Round rod; 27. Upper plate; 28. L-shaped plate; 29. ​​Right-angle plate; 30. Release groove; 31. Return spring; 32. Push plate; 33. Connecting rod; 34. Drive rod; 35. Press-type valve; 36. Support frame; 37. Extrusion block; 38. Connecting plate; 39. Right-angle block. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0020] In actual use, it was found that the activation furnace system can ensure environmental protection and temperature, but the induced draft fan is in a dusty and tarry flue gas at 300-400℃ for a long time. The impeller and shell are prone to coke and ash accumulation, requiring monthly shutdown to remove coke and disassemble for inspection. Each time is time-consuming, and the furnace pressure fluctuates greatly and the temperature drops sharply by 50℃ at the moment of switching, resulting in uneven activation and reduced output. Existing technology lacks a means of maintenance without shutting down the machine. The induced draft system must be completely shut down for cleaning, which has become a bottleneck for continuous production. In order to solve the above problems, the following structure was invented.

[0021] like Figures 1-10The diagram shows an internally heated activated carbon activation furnace, comprising an activation tank 1 and impeller fans 2. A pair of impeller fans 2 are provided. A fixed frame 3 is located behind the activation tank 1, and the impeller fans 2 are all fixed to the fixed frame 3 by bolts. A rear frame 4 is located behind the fixed frame 3, and a pressure stabilizing tank 5 is fixedly connected to the top of the rear frame 4. The pressure stabilizing tank 5 acts as an "air spring," storing a certain amount of flue gas during normal operation to form a buffer volume. When one of the impeller fans 2 is turned off, the pipeline airflow is instantly halved, and the accumulated flue gas in the tank immediately replenishes the main pipe, causing the furnace negative pressure to drop by <±20Pa, preventing temperature collapse and dust overflow. After the impeller fan 2 completes its speed increase, the pressure inside the tank is re-established, completing the "peak shaving and valley filling" pressure stabilization function and ensuring stability during the adjustment process. Furthermore, the pressure stabilizing tank 5 is connected to the waste heat recovery system in the activated carbon processing system to recover waste heat from the inhaled high-temperature waste gas. Exhaust pipes 6 are bolted between the outlet of impeller fan 2 and pressure tank 5. Inlet pipes 7 are bolted to the inlet end of impeller fan 2. Adjusting block 8 is fixedly connected to the front side of fixed frame 3. A horizontal groove 9 is opened in the middle of the front side of adjusting block 8. L-shaped grooves 10 are opened on both sides of the horizontal groove 9. The other end of the inlet pipe 7 is fixedly connected to the side wall of adjusting block 8. The inner side of L-shaped groove 10 is connected to the inner side of inlet pipe 7. Fixed plate 11 is fixedly connected to the front side of adjusting block 8. A sealing plate 12 is bolted to the front side of fixed plate 11. A suction pipe 13 is bolted to the front side of sealing plate 12 relative to the bottom end of L-shaped groove 10. The other ends of the two suction pipes 13 are fixedly connected to the inlet and outlet of activation tank 1, respectively. An adjustment mechanism for adjusting suction state is also provided. A drive plate 18 is provided on fixed frame 3. A main circular hole plate 14 and a secondary circular hole plate 15 are fixedly connected to the inner side of the L-shaped groove 10 relative to the upper position of the horizontal groove 9. An upper arc-shaped groove 16 is opened on the inner side of the L-shaped groove 10 relative to the side of the horizontal groove 9. Lower arc-shaped grooves 17 are opened on both the upper and lower sides of the horizontal groove 9. By setting the upper arc-shaped groove 16 and the lower arc-shaped groove 17, the part blocked by the upper conical sealing block 23 and the lower conical sealing block 25 in the L-shaped groove 10 can be widened to ensure the rapid passage of flue gas. A middle circular hole plate 21 is fixedly connected to the middle of the inner side of the horizontal groove 9. A circular hole is opened through the front side of the fixed plate 11 relative to the rear position of the air inlet pipe 7. The adjustment mechanism includes an electric telescopic cylinder 19. A support frame 20 is fixedly connected to the top of the fixed frame 3. The electric telescopic cylinder 19 is fixedly connected to the side wall of the support frame 20. The output end of the electric telescopic cylinder 19 passes through the inner side of the support frame 20 and is fixedly connected to the side wall of the drive plate 18. A flat groove and a pair of vertical grooves are respectively opened on the rear side of the fixed plate 11. A vertical plate 22 is longitudinally slidably connected to the inner side of each vertical groove. An upper conical sealing block 23 is fixedly connected to the top of each vertical plate 22. A horizontal plate 24 is slidably connected to the inner side of the flat groove. A lower conical sealing block 25 is fixedly connected to the side wall of the horizontal plate 24. A pair of front grooves are opened on the front side of the fixed plate 11. The front grooves are connected to the flat groove and the vertical grooves. A round rod 26 is fixedly connected to the front side of the vertical plate 22. An upper plate 27 and an L-shaped plate 28 are respectively provided on the inner side of the two front grooves. The upper plate 27 is inclined on the side away from the horizontal plate 24. A right-angle plate 29 with an inclined surface is fixedly connected to the inner side of the L-shaped plate 28. A release groove 30 is opened on the rear side of the upper plate 27. A push plate 32 is fixedly connected to the front side of the horizontal plate 24. The push plate 32 is fixedly connected to the side wall of the upper plate 27. A connecting rod 33 is fixedly connected between the push plate 32 and the L-shaped plate 28. The connecting rod 33 is sealed and penetrates the inner side of the front groove of the fixed plate 11. A drive rod 34 is fixedly connected to the side wall of the L-shaped plate 28. The drive rod 34 is sealed and slidably connected to the side wall of the fixed plate 11. The drive rod 34 is fixedly connected to the side wall of the drive plate 18. Furthermore, the release groove 30 is inclined on the side closer to the horizontal plate 24, and the bottom end of the release groove 30 on the side away from the horizontal plate 24 is inclined. Both the upper conical sealing block 23 and the lower conical sealing block 25 are made of a double-layer composite material of silicone rubber and ceramic fiber felt. The upper ceramic fiber felt is resistant to high temperature and blocks heat, while the lower silicone rubber provides resilience and airtightness. The two are vulcanized together and can operate at a long-term temperature of up to 350℃. A return spring 31 is fixedly connected between the bottom end of the vertical groove and the bottom end of the vertical plate 22. During equipment operation, the two impeller fans 2 start to generate suction at the air inlet pipe 7. Then, the suction is transmitted to the suction pipe 13 through the L-shaped groove 10 (at this time, the lower conical sealing block 25 is inserted into the middle circular hole plate 21, and the upper conical sealing block 23 is in the state of not blocking the main circular hole plate 14 and the secondary circular hole plate 15 next to the horizontal groove 9, so the suction will be transmitted to the suction pipe 13), thereby generating suction at the furnace head and furnace tail of the activation tank 1 to induced airflow for the high-temperature flue gas inside the activation tank 1. Then, during equipment operation, when maintenance is required on the impeller fan 2, the power of the impeller fan 2 that is not under maintenance can be increased, and the electric telescopic cylinder 19 can be activated to drive the drive plate 18 to move, thereby pulling the drive rod 34 to move. At this time, the push plate 32 and the upper plate 27 will be moved through the L-shaped plate 28 and the connecting rod 33. The movement of the push plate 32 will drive the horizontal plate 24 to move, thereby causing the lower conical sealing block 25 to be pulled out from the middle circular hole plate 21, releasing the blockage of the middle circular hole plate 21. At the same time, through the movement of the upper plate 27, and because the vertical plate 22 can only move longitudinally within the vertical groove, the lower conical sealing block 25 will be pulled out from the middle circular hole plate 21, releasing the blockage of the middle circular hole plate 21. As the upper plate 27 slides upward, the inclined surface of the upper plate 27 will press the round rod 26 upward, which in turn will drive the vertical plate 22 and the upper conical sealing block 23 to move upward and gradually stretch the return spring 31. Then the round rod 26 moves to the top of the upper plate 27, which will then tightly insert the upper conical sealing block 23 into the main round hole plate 14. During this process, the L-shaped plate 28 and the right-angle plate 29 will move. When the round rod 26 moves to the top of the upper plate 27, it will drive the inclined surface of the right-angle plate 29 to move to the bottom of the round rod 26 in front of the secondary round hole plate 15, thereby realizing the function of opening the middle round hole plate 21 and sealing the corresponding main round hole plate 14. During this process, the corresponding impeller fan 2 needs to be stopped, and then the impeller fan 2 can be maintained. During this process, under the high power operation of another impeller fan 2, suction is transmitted through the air inlet pipe 7. Then, under the action of the L-shaped groove 10 and the horizontal groove 9, the L-shaped groove 10 below the main circular plate 14 also generates suction, thereby treating the two ends of the activation tank 1 with smoke. However, after the maintenance of the impeller fan 2 is completed, the electric telescopic cylinder 19 can be reset, and the above operation can be repeated in reverse to reset it. If another impeller fan 2 needs to be maintained, the electric telescopic cylinder 19 can be started again to drive the drive plate 18 and drive rod 34 to move, thereby driving the L-shaped plate 28, push plate 32 and upper plate 27 to continue to move. During this process, the round rod 26 in front of the main circular hole plate 14 will move above the release groove 30, thereby pulling the vertical plate 22 and the round rod 26 down under the elastic force of the reset spring 31. Then the round rod 26 is in the release groove. Under the pressure of the inclined plane 30, it moves to the bottom of the upper plate 27 and compresses the return spring 31, which in turn drives the corresponding upper conical sealing block 23 to move down and out of the main circular hole plate 14. At this time, the well-maintained impeller fan 2 is started at high power. During this process, the movement of the L-shaped plate 28 will drive the inclined plane of the right angle plate 29 to gradually press the circular rod 26 in front of the secondary circular hole plate 15, thereby repeating the above operation, so that the corresponding upper conical sealing block 23 blocks the secondary circular hole plate 15, and at the same time, the corresponding impeller fan 2 is stopped, so that the impeller fan 2 can be maintained. Finally, after maintenance, during the reset process of the electric telescopic cylinder 19, the round rod 26 will move below the upper plate 27. When it moves into the release groove 30, the pressure on the round rod 26 will be released, and then it will be pushed back to its original position under the elastic force of the reset spring 31. Subsequently, when the round rod 26 moves to the other side of the release groove 30, it will be squeezed down by the inclined surface on that side, thereby compressing the reset spring 31 until the upper plate 27 is fully reset, releasing the pressure on the round rod 26. The round rod 26 will then move up to its original position under the elastic force of the reset spring 31.

[0022] In summary, through the above structural design, a dual-exhaust structure is adopted, with independent impeller fans 2 at both the furnace head and tail. The furnace head impeller fan 2 is dedicated to extracting smoke and dust from the furnace entrance, while the furnace tail impeller fan 2 ensures negative pressure in the furnace chamber. The air volume of the two paths can be precisely adjusted, and the system always maintains a slight negative pressure at the furnace entrance, preventing dust overflow and ensuring a clean workshop environment. Furthermore, through the setting of the adjustment mechanism, when maintaining one impeller fan 2, it is only necessary to control the other impeller fan 2 to operate at increased power. By utilizing the pressure stabilizing tank 5, the impeller fan 2 can be quickly switched, and a single impeller fan 2 can be used to operate the dual-exhaust structure, achieving non-stop maintenance, ensuring continuous and efficient operation of the activation furnace, and reducing equipment investment and floor space.

[0023] Based on the above embodiments, it was found during use that although the above structure can quickly switch the dual exhaust structure, during use and maintenance, maintenance personnel still need to close the valve between the impeller fan 2 and the pressure tank 5, which is inconvenient. To solve the above problem, the above structure has been further improved.

[0024] Each exhaust pipe 6 is equipped with a push-button valve 35. A support frame 36 is fixedly connected between the fixing frame 3 and the rear frame 4. The exhaust pipe 6 passes through the outer wall of the support frame 36. The push-button valve 35 is located inside the support frame 36. A pressing block 37 is laterally slidably connected to the inside of the support frame 36 relative to the side of the push-button valve 35 away from the drive plate 18. Both sides of the pressing block 37 are inclined. A connecting plate 38 is fixedly connected to the top of the pressing block 37. The connecting plate 38 is fixedly connected to the side wall of the drive plate 18. A right-angled block 39 with an inclined surface is laterally slidably connected to the inside of the support frame 36 relative to the side of another push-button valve 35. There is a gap between the right-angle block 39 and the push-button valve 35, the inclined surface of the pressing block 37 contacts the pressing point of the push-button valve 35, and the pressing point of the push-button valve 35 is set as a smooth arc surface; During the shutdown and maintenance of the impeller fan 2, the electric telescopic cylinder 19 drives the drive plate 18 to move, which in turn moves the connecting plate 38, thereby moving the pressing block 37 and the right-angle block 39. Since the pressing point of the push-button valve 35 can only move up and down, when the pressing block 37 moves laterally, the inclined surface of the pressing block 37 will press one of the pressing points of the push-button valve 35, thereby sealing the main circular orifice plate 14 and closing the valve on the exhaust pipe 6 behind the impeller fan 2. At the same time, the right-angle block 39 moves to the pressing point of the other push-button valve 35, and then when the electric... As the telescopic cylinder 19 continues to move, it will drive the push valve 35 to the bottom of the pressing block 37. Then, the inclined surface on the other side of the pressing block 37 will gradually move onto the push valve 35, thereby gradually releasing the pressure on the push valve 35. Under the action of the spring on the push valve 35, it will be pushed to reset. At the same time, another push valve 35 will be closed under the pressure of the inclined surface of the right-angle block 39, thereby closing the other push valve 35 and opening the push valve 35 corresponding to the main circular hole plate 14. Finally, when resetting after maintenance, the above operation can be repeated in reverse.

[0025] In summary, the above structural design can automatically block the channel between the impeller fan 2 and the pressure tank 5 while closing the corresponding impeller fan 2 air intake channel, thereby facilitating quick maintenance by workers and further improving the convenience of the device.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of the present invention.

[0027] Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed.

Claims

1. An internally heated activated carbon activation furnace, comprising an activation tank (1) and an impeller fan (2), characterized in that: The impeller fan (2) is provided in pairs. A fixed frame (3) is provided behind the activation tank (1). The impeller fan (2) is fixed to the fixed frame (3) by bolts. A rear frame (4) is provided behind the fixed frame (3). A pressure stabilizing tank (5) is fixedly connected to the top of the rear frame (4). An exhaust pipe (6) is installed between the outlet of the impeller fan (2) and the pressure stabilizing tank (5) by bolts. An air inlet pipe (7) is installed at the air inlet end of the impeller fan (2) by bolts. An adjusting block (8) is fixedly connected to the front side of the fixed frame (3). A transverse groove (9) is opened in the middle of the front side of the adjusting block (8). L-shaped grooves (10) are opened on both sides of the transverse groove (9). The other end of the air inlet pipe (7) is fixedly connected to the side wall of the adjusting block (8), and the inner side of the L-shaped groove (10) is connected to the inner side of the air inlet pipe (7). A fixing plate (11) is fixedly connected to the front side of the adjusting block (8). A sealing plate (12) is installed on the front side of the fixing plate (11) by bolts. A suction pipe (13) is installed on the front side of the sealing plate (12) relative to the bottom end of the L-shaped groove (10) by bolts. The other ends of the two suction pipes (13) are respectively fixedly connected to the inlet and outlet of the activation tank (1). An adjustment mechanism for adjusting the suction state is also provided. A drive plate (18) is provided on the fixing frame (3).

2. The internally heated activated carbon activation furnace according to claim 1, characterized in that: The inner side of the L-shaped groove (10) is fixedly connected to a main circular hole plate (14) and a secondary circular hole plate (15) respectively, relative to the position above the horizontal groove (9). The inner side of the L-shaped groove (10) is provided with an upper arc groove (16) relative to the position beside the horizontal groove (9). The upper and lower sides of the horizontal groove (9) are provided with lower arc grooves (17). The middle part of the inner side of the horizontal groove (9) is fixedly connected to a middle circular hole plate (21). The front side of the fixing plate (11) is provided with a circular hole relative to the position behind the air intake pipe (7).

3. The internally heated activated carbon activation furnace according to claim 1, characterized in that: The adjustment mechanism includes an electric telescopic cylinder (19). A support frame (20) is fixedly connected to the top of the fixed frame (3). The electric telescopic cylinder (19) is fixedly connected to the side wall of the support frame (20). The output end of the electric telescopic cylinder (19) passes through the inner side of the support frame (20) and is fixedly connected to the side wall of the drive plate (18). A flat groove and a pair of vertical grooves are respectively opened on the rear side of the fixed plate (11). A vertical plate (22) is longitudinally slidably connected to the inner side of each vertical groove. An upper conical sealing block (23) is fixedly connected to the top of each vertical plate (22). A horizontal sliding connection is made to the inner side of the flat groove. A horizontal plate (24) is attached, and a lower conical sealing block (25) is fixedly connected to the side wall of the horizontal plate (24). A pair of front grooves are opened on the front side of the fixed plate (11), and the front grooves are connected to the horizontal groove and the vertical groove. A round rod (26) is fixedly connected to the front side of the vertical plate (22). An upper plate (27) and an L-shaped plate (28) are respectively provided on the inner side of the two front grooves. The upper plate (27) is inclined on the side away from the horizontal plate (24). A right-angle plate (29) with an inclined surface is fixedly connected to the inner side of the L-shaped plate (28). A release groove (30) is opened on the rear side of the upper plate (27).

4. The internally heated activated carbon activation furnace according to claim 3, characterized in that: A push plate (32) is fixedly connected to the front side of the horizontal plate (24). The push plate (32) is fixedly connected to the side wall of the upper plate (27). A connecting rod (33) is fixedly connected between the push plate (32) and the L-shaped plate (28). The connecting rod (33) is sealed and penetrates the inner side of the front groove of the fixed plate (11). A drive rod (34) is fixedly connected to the side wall of the L-shaped plate (28). The drive rod (34) is sealed and slidably connected to the side wall of the fixed plate (11). The drive rod (34) is fixedly connected to the side wall of the drive plate (18).

5. The internally heated activated carbon activation furnace according to claim 3, characterized in that: Furthermore, the release groove (30) is inclined on the side closer to the horizontal plate (24), and the bottom end of the release groove (30) is inclined on the side away from the horizontal plate (24).

6. The internally heated activated carbon activation furnace according to claim 3, characterized in that: The upper conical sealing block (23) and the lower conical sealing block (25) are both made of a double-layer composite material of silicone rubber and ceramic fiber felt. The bottom end of the vertical groove and the bottom end of the vertical plate (22) are both fixedly connected with a reset spring (31).

7. The internally heated activated carbon activation furnace according to claim 1, characterized in that: Each exhaust pipe (6) is equipped with a push-button valve (35). A support frame (36) is fixedly connected between the fixing frame (3) and the rear frame (4). The exhaust pipe (6) passes through the outer wall of the support frame (36). The push-button valve (35) is located inside the support frame (36). A pressing block (37) is laterally slidably connected to the side of the push-button valve (35) on the side away from the drive plate (18) on the inner side of the support frame (36). Both sides of the pressing block (37) are inclined. A connecting plate (38) is fixedly connected to the top of the pressing block (37). The connecting plate (38) is fixedly connected to the side wall of the drive plate (18). A right-angled block (39) with an inclined surface is laterally slidably connected to the side of another push-button valve (35) on the inner side of the support frame (36).

8. The internally heated activated carbon activation furnace according to claim 7, characterized in that: There is a gap between the right-angle block (39) and the press valve (35), the inclined surface of the extrusion block (37) is in contact with the pressing point of the press valve (35), and the pressing point of the press valve (35) is set as a smooth arc surface.

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