External heating type pyrolysis carbonization furnace for sludge carbonization treatment

Abstract

The utility model relates to the technical field of sludge treatment, and discloses an external heating type pyrolysis carbonization furnace for sludge carbonization treatment, which comprises a base, the right side of the top of the base is fixedly connected with a heating chamber, the top of the heating chamber is provided with a heating cylinder, the left side of the heating cylinder is communicated with a feeding chamber, the top of the feeding chamber is provided with a feeding groove, and the feeding groove is communicated with the heating cylinder. An air cylinder is fixedly connected to the left side of the top of the base, a push rod is fixedly connected to one end of the air cylinder, a push plate is fixedly connected to the right side of the push rod, the left side of the push plate is slidably connected to the inner side of the feeding chamber, and a connecting column is fixedly connected to the top of the push plate. According to the feeding device, through mutual cooperation of the sliding groove formed in the fixed baffle, the limiting plate and the L-shaped sliding column which are connected with the movable baffle, and the movable groove and the limiting groove which are formed in the push rod, the stability of the whole feeding device in the reciprocating motion process is guaranteed, and excessive accumulation of sludge in the feeding chamber is prevented.

Description

Technical Field

[0001] This utility model relates to the field of sludge treatment technology, and in particular to an externally heated pyrolysis carbonization furnace for sludge carbonization treatment. Background Technology

[0002] With the acceleration of urbanization and industrial development, the amount of sewage treated has increased significantly, resulting in a large amount of sludge. If this sludge is not properly treated, it will cause serious environmental pollution. Therefore, there is a need for efficient and environmentally friendly sludge treatment methods, which has prompted the research and development of sludge carbonization treatment technology and equipment.

[0003] A search revealed Chinese Patent Publication No. CN204162655U, which discloses an externally heated pyrolysis carbonization furnace suitable for medium-temperature carbonization of sludge. The furnace includes a feeding device and a cylinder. A front support roller device and a rear support roller device are respectively located at both ends of the cylinder, and a middle support roller device is located in the middle of the cylinder. A front heating chamber is located on the outer side of the cylinder between the front and middle support roller devices, and a rear heating chamber is located on the outer side of the cylinder between the middle and rear support roller devices. A hot flue gas inlet is located on the outer wall of the rear heating chamber, and a hot flue gas outlet is located on the outer wall of the front heating chamber. The hot flue gas inlet is connected to the hot flue gas outlet via a hot air duct. This method utilizes combustion pyrolysis gas to heat the sludge, thereby significantly reducing energy costs. The sludge biochar produced by carbonization retains elements such as potassium and phosphorus, and stabilizes heavy metals such as copper. It can be modified and used in wastewater treatment plants for the re-adsorption of nitrogen, phosphorus, and heavy metals in wastewater, and can also be used as a biochar-based fertilizer for landscaping or as soil amendment. However, in actual use, when the moisture or viscosity of the sludge changes, the pushing force of the spiral blades on the sludge will be affected, which will cause fluctuations in the feeding speed. The sludge cannot be fully dispersed and pushed in a short time and will accumulate at the inlet of the spiral blades, affecting the feeding effect. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an externally heated pyrolysis carbonization furnace for sludge carbonization treatment, aiming to improve the problem of easy blockage caused by feeding through a screw feeder in the prior art.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an externally heated pyrolysis carbonization furnace for sludge carbonization treatment, comprising a base, a heating chamber fixedly connected to the top right side of the base, a heating cylinder disposed on the top of the heating chamber, a feeding chamber connected to the left side of the heating cylinder, a feeding chute opened on the top of the feeding chamber, a cylinder fixedly connected to the top left side of the base, a push rod fixedly connected to one end of the cylinder, a push plate fixedly connected to the right side of the push rod, a push plate slidably connected to the left side of the push plate inside the feeding chamber, and a connecting column fixedly connected to the top of the push plate. A fixed baffle is fixedly connected to the top of the connecting column. A sliding groove is provided on the inner side of the fixed baffle. A movable baffle is slidably connected to the inner side of the sliding groove. A limiting plate is fixedly connected to the right side of the movable baffle. The left side of the limiting plate is slidably connected to the inner side of the sliding groove. An L-shaped sliding column is fixedly connected to the bottom left side of the movable baffle. A moving groove is provided on the outer wall of the push rod. The bottom of the L-shaped sliding column is slidably connected to the inner side of the moving groove. A limiting groove is provided on the outer wall of the push rod. The right side of the L-shaped sliding column is slidably connected to the inner side of the limiting groove. A recycling mechanism is provided on the outer wall of the heating chamber.

[0006] The above technical solution achieves feeding through the cooperation of cylinder, push rod, and push plate. The cylinder can precisely control the extension and retraction of the push rod, thereby enabling the push plate to push the sludge with stable force and speed, overcoming the problem of uneven feeding that occurs with spiral feeding and ensuring that the sludge can enter the heating cylinder evenly. During the process of the push plate pushing the sludge, due to the synergistic effect of structures such as fixed baffle, moving baffle, L-shaped sliding column, chute, limiting groove, and moving groove, abnormal accumulation or uneven distribution of sludge in the feeding chamber can be effectively prevented. The design of moving baffle and fixed baffle can prevent new sludge from entering the feeding chamber when the push plate moves to the right at the bottom of the feeding chute.

[0007] As a further description of the above technical solution:

[0008] The recycling mechanism includes a long box, the bottom of which is fixedly connected to the top of the base. The outer wall of the long box is connected to a cuboid box. The top of both the long box and the cuboid box are fixedly connected to the same servo motor. The output end of the servo motor is fixedly connected to a connecting plate. Filter plates are fixedly connected to all four sides of the connecting plate. The top of the outer wall of the heating cylinder is connected to an exhaust port. The top of the exhaust port is connected to a connecting pipe. The bottom of the connecting pipe is connected to the top right side of the long box. The front side of the long box is connected to an air outlet pipe. The other end of the air outlet pipe is connected to the outer wall of the heating chamber.

[0009] The above technical solution involves a servo motor driving the connecting plate to rotate, which in turn causes the surrounding filter plates to rotate, increasing the filtration area. Within a unit of time, the rotating filter plates can come into contact with more flue gas, giving impurities and harmful substances in the flue gas a greater chance to be intercepted and adsorbed.

[0010] As a further description of the above technical solution:

[0011] Each of the multiple filter plates has a fixedly connected locking block on one of its adjacent sides. The outer wall of the connecting plate has a locking groove around its perimeter, and the outer walls of the multiple locking blocks are slidably connected to the inner side of the corresponding locking groove.

[0012] The above technical solution allows for the quick connection between the filter plate and the connecting plate by aligning the clips on the filter plate with the slots on the connecting plate and sliding them in.

[0013] As a further description of the above technical solution:

[0014] The cuboid box has a front cover on its rear side, and the front cover and the cuboid box are connected by a hinge.

[0015] The above technical solution provides a convenient access for equipment maintenance through the front cover.

[0016] As a further description of the above technical solution:

[0017] A handle is fixedly connected to the outer wall of the front cover, and an observation window is provided on the outer wall of the front cover.

[0018] The above technical solution provides convenience for operators to open the front cover, and the observation window allows operators to observe the inside of the cube without opening the front cover, which helps to detect potential problems in time and take corresponding measures before the problems worsen, thereby improving the reliability and stability of equipment operation.

[0019] As a further description of the above technical solution:

[0020] A support frame is fixedly connected to the bottom of the cylinder, and a controller is installed on the outer wall of the support frame.

[0021] Through the above technical solution: the support frame provides a stable support structure for the cylinder, and the controller allows the operator to easily control the operation of the cylinder.

[0022] As a further description of the above technical solution:

[0023] The top of the feeding trough is provided with a feeding hopper, and the top of the feeding hopper is slidably connected with a sealing plug, the bottom of the outer wall of the sealing plug being slidably connected to the top of the inner wall of the feeding hopper.

[0024] Through the above technical solution, the sealing plug that slides at the top of the feed hopper can effectively prevent external dust and impurities from entering the feed hopper, which is beneficial to maintaining the purity of the sludge.

[0025] As a further description of the above technical solution:

[0026] The top of the base is fixedly connected to a second support frame, and the top of the second support frame is fixedly connected to the bottom of the feeding chamber.

[0027] The above technical solution uses a second support frame to fix the feed chamber, thus maintaining stability during sludge feeding.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the feeding is achieved through the cooperation of cylinder, push rod and push plate, which can stably push sludge into heating cylinder. The sliding groove opened inside the fixed baffle, the limiting plate and L-shaped sliding column connected to the moving baffle, and the moving groove and limiting groove opened on the push rod cooperate with each other to ensure the stability of the entire feeding device during reciprocating motion and prevent excessive accumulation of sludge in the feeding chamber.

[0030] 2. In this utility model, the flue gas generated during the carbonization process is purified and used as the energy source for the heating chamber, realizing the recovery and reuse of energy. A cuboid box is connected to the outer wall of the elongated box, and a servo motor is set on top of it to drive the connecting plate to rotate, thereby driving the surrounding filter plates to rotate and filter the flue gas. This increases the filtration area and improves the filtration efficiency. At the same time, it effectively prevents the local accumulation of impurities on the filter plates and ensures the continuous effectiveness of filtration. Attached Figure Description

[0031] Figure 1 This is a three-dimensional front view of an externally heated pyrolysis carbonization furnace for sludge carbonization treatment proposed in this utility model.

[0032] Figure 2 This is a rear perspective view of an externally heated pyrolysis carbonization furnace for sludge carbonization treatment proposed in this utility model.

[0033] Figure 3 This is a schematic diagram of the cylinder of an externally heated pyrolysis carbonization furnace for sludge carbonization treatment proposed in this utility model, under the contraction state of the cylinder.

[0034] Figure 4 This is a schematic diagram of the cylinder of an externally heated pyrolysis carbonization furnace for sludge carbonization treatment proposed in this utility model, in its cylinder unfolded state.

[0035] Figure 5 This is a partially exploded view of an externally heated pyrolysis carbonization furnace for sludge carbonization treatment proposed in this utility model.

[0036] Figure 6 This is a schematic diagram of the recovery mechanism of an externally heated pyrolysis carbonization furnace for sludge carbonization treatment proposed in this utility model.

[0037] Figure 7This is a schematic diagram of the filter plate of an externally heated pyrolysis carbonization furnace for sludge carbonization treatment proposed in this utility model.

[0038] Legend:

[0039] 1. Base; 2. Recycling mechanism; 201. Long box; 202. Cuboid box; 203. Exhaust port; 204. Connecting pipe; 205. Servo motor; 206. Connecting plate; 207. Filter plate; 208. Exhaust pipe; 3. Heating cylinder; 4. Heating chamber; 5. Feeding chamber; 6. Cylinder; 7. Push rod; 8. Feeding trough; 9. Push plate; 10. Connecting column; 11. Fixed baffle; 12. Slide groove; 13. Moving baffle; 14. Limiting plate; 15. L-shaped sliding column; 16. Moving groove; 17. Limiting groove; 18. Support frame one; 19. Controller; 20. Support frame two; 21. Feed hopper; 22. Sealing plug; 23. Locking block; 24. Locking slot; 25. Hinge; 26. Front cover; 27. Observation window; 28. Handle. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] See attached document Figure 3 Appendix Figure 4 and attached Figure 5This utility model provides an embodiment of an externally heated pyrolysis carbonization furnace for sludge carbonization treatment, comprising a base 1, a heating chamber 4 fixedly connected to the top right side of the base 1, a heating cylinder 3 disposed on the top of the heating chamber 4, a feeding chamber 5 connected to the left side of the heating cylinder 3, a feeding trough 8 opened on the top of the feeding chamber 5, a cylinder 6 fixedly connected to the top left side of the base 1, a push rod 7 fixedly connected to one end of the cylinder 6, a push plate 9 fixedly connected to the right side of the push rod 7, and the left side of the push plate 9 slidably connected to the inside of the feeding chamber 5. Through the coordinated operation of cylinder 6, push rod 7, and push plate 9, sludge is stably fed from feed chamber 5 to heating cylinder 3. A connecting column 10 is fixedly connected to the top of push plate 9, and a fixed baffle 11 is fixedly connected to the top of connecting column 10. A groove 12 is formed on the inner side of fixed baffle 11, and a movable baffle 13 is slidably connected to the inner side of groove 12. The movable baffle 13 and fixed baffle 11 together form a partition plate, preventing further material feeding when push plate 9 is pushed below feed chute 8, without hindering the reciprocating motion of push plate 9. In the process, a limiting plate 14 is fixedly connected to the right side of the movable baffle 13, and the left side of the limiting plate 14 is slidably connected to the inner side of the slide groove 12. An L-shaped sliding column 15 is fixedly connected to the bottom left side of the movable baffle 13. A moving groove 16 is opened on the outer wall of the push rod 7, and the bottom of the L-shaped sliding column 15 is slidably connected to the inner side of the moving groove 16. A limiting groove 17 is opened on the outer wall of the push rod 7, and the right side of the L-shaped sliding column 15 is slidably connected to the inner side of the limiting groove 17. A recycling mechanism 2 is provided on the outer wall of the heating chamber 4; the bottom of the cylinder 6 is fixedly connected to... A support frame 18 is connected, and a controller 19 is installed on the outer wall of the support frame 18 to realize the automatic control of the equipment; a feeding hopper 21 is set on the top of the feeding trough 8 to make the material flow more smoothly. A sealing plug 22 is slidably connected to the top of the feeding hopper 21. When not in use, the sealing plug 22 can be covered. The bottom of the outer wall of the sealing plug 22 is slidably connected to the top of the inner wall of the feeding hopper 21; a support frame 20 is fixedly connected to the top of the base 1, and the top of the support frame 20 is fixedly connected to the bottom of the feeding chamber 5.

[0042] Specifically, feeding is achieved through the cooperation of cylinder 6, push rod 7, and push plate 9. During each feeding process, push plate 9 can stably push the sludge, causing it to move towards heating cylinder 3 within feeding chamber 5. During feeding, the start and stop of feeding can be accurately controlled as needed. When the moving baffle 13 and the fixed baffle 11 cooperate to form an isolation plate blocking the top of feeding chamber 5, it can effectively prevent the sludge from continuing to fall, preventing sludge from blocking feeding chamber 5 when push plate 9 retracts, thus affecting the pushing effect of push plate 9 in the next cycle. The support frame 18 at the bottom of cylinder 6 and the support frame 20 at the bottom of feeding chamber 5 enhance the stability of the overall structure of the equipment.

[0043] See attached document Figure 2 Appendix Figure 6 and attached Figure 7The recycling mechanism 2 includes a long box 201, the bottom of which is fixedly connected to the top of the base 1. The outer wall of the long box 201 is connected to a cuboid box 202. The tops of the long box 201 and the cuboid box 202 are both fixedly connected to the same servo motor 205. The output end of the servo motor 205 is fixedly connected to a connecting plate 206. Filter plates 207 are fixedly connected to all four sides of the connecting plate 206. The top of the outer wall of the heating cylinder 3 is connected to an exhaust port 203. The top of the exhaust port 203 is connected to a connecting pipe 204. The bottom of the connecting pipe 204 is connected to the top right side of the long box 201. The front side of the long box 201 is connected to an exhaust pipe 208. The other end of the exhaust pipe 208 is connected to the outer wall of the heating chamber 4. Through the connection of the exhaust port 203, the connecting pipe 204, the long box 201 and the exhaust pipe 208, the flue gas that was originally emitted and wasted is recycled and purified as the combustion energy of the heating chamber 4.

[0044] Specifically, by filtering the flue gas generated during the carbonization process, impurities and toxic substances are intercepted and adsorbed, effectively reducing pollutants emitted into the environment. The design uses a servo motor 205 to drive the connecting plate 206 to rotate, causing the filter plates 207 fixedly connected around it to rotate as well. This increases the filtration area and, compared to traditional static filtration methods, can process more flue gas per unit time, improving filtration efficiency and allowing the flue gas to be filtered and purified more quickly and thoroughly. Four filter plates 207 can be configured for different purposes to improve the filtration effect. At the same time, the rotation process helps prevent impurities from accumulating locally on the filter plates 207, avoiding a decrease in filtration effect or equipment failure due to local blockage, extending the service life of the filter plates 207, and reducing maintenance costs and replacement frequency. The servo motor 205 is model BGL-180SG.

[0045] See attached document Figure 2 Each of the multiple filter plates 207 has a locking block 23 fixedly connected to one of its adjacent sides. The outer wall of the connecting plate 206 has slots 24 on all four sides. The outer walls of the multiple locking blocks 23 are slidably connected to the inner side of the corresponding slots 24. The locking blocks 23 and slots 24 facilitate the disassembly and installation of the filter plates 207. A front cover 26 is provided on the rear side of the cuboid box 202. The front cover 26 and the cuboid box 202 are connected by a hinge 25, which facilitates the opening of the internal space of the cuboid box 202. A handle 28 is fixedly connected to the outer wall of the front cover 26 for easy operation. An observation window 27 is provided on the outer wall of the front cover 26, which allows the operator to observe the dust accumulation in the internal filter plates 207 and replace them in time.

[0046] Specifically, the front cover 26 connected to the rear of the cuboid box 202 via a hinge 25 allows the operator to easily open the interior space of the cuboid box 202. The handle 28 further facilitates the operator in opening the front cover 26. Through the cooperation of the locking block 23 and the slot 24, the connection between the filter plate 207 and the connecting plate 206 becomes convenient. When installing the filter plate 207, simply align the locking block 23 with the slot 24 and slide it in to complete the installation. The operation is simple and improves the efficiency of equipment assembly.

[0047] Working principle: Initially, cylinder 6 is in the retracted state, push plate 9 is located on the left side of heating chamber 4, and movable baffle 13 is located in the middle of fixed baffle 11. When starting cylinder 6 extends to the right, push plate 9 drives fixed baffle 11 to move to the right through connecting column 10. L-shaped sliding column 15 and movable baffle 13 remain stationary. As push rod 7 moves, the bottom of L-shaped sliding column 15 slides in movable groove 16. When sliding continues, when the limiting plate 14 on the right side of movable baffle 13 is engaged with the rightmost side of sliding groove 12 inside fixed baffle 11, push plate 9 drives fixed baffle 11 to move, and fixed baffle 11 drives movable baffle 13 to move. A relatively long partition plate is formed below the feed hopper 21 to prevent sludge from continuing to fall from the feed trough 8 into the feed chamber 5. As the pusher plate 9 pushes to the right, it pushes the sludge into the heating cylinder 3. When the cylinder 6 retracts, it first moves the pusher plate 9 to the left. The pusher plate 9, through the connecting column 10, moves the fixed baffle 11 to the left. The L-shaped sliding column 15 and the moving baffle 13 remain stationary. As the push rod 7 moves to the left, when the rightmost side of the L-shaped sliding column 15 engages with the limiting groove 17, the push rod 7 drives the pusher plate 9, the top connecting column 10, and the fixed baffle 11 to continue moving, simultaneously driving the L-shaped sliding column 15 and the moving baffle 11 to move. The moving baffle 13 moves synchronously to the right, returning to its initial state. This reciprocating motion conveys the sludge to the heating cylinder 3. The flue gas generated during carbonization is discharged from the exhaust port 203 at the top of the outer wall of the heating cylinder 3. Since the exhaust port 203 is connected to the top right side of the elongated box 201 via a connecting pipe 204, the flue gas enters the elongated box 201 through the connecting pipe 204 for filtration. A servo motor 205 is fixedly connected to the top of both the elongated box 201 and the cuboid box 202. When the servo motor 205 starts, its output drives the connecting plate 206 to rotate. Because the connecting plate 206 is surrounded by… A filter plate 207 is fixedly connected. As the connecting plate 206 rotates, the filter plate 207 also rotates. The flue gas entering the long body box 201 is filtered by the rotation of the filter plate 207. Impurities and toxic substances in the flue gas are intercepted and adsorbed on the filter plate 207, thereby purifying the flue gas. After being filtered by the filter plate 207, the clean flue gas is discharged through the exhaust pipe 208 connected to the front of the long body box 201. The other end of the exhaust pipe 208 is connected to the outer wall of the heating chamber 4, so that the clean flue gas can be transported to the heating chamber 4 to participate in the combustion process as a combustion energy source and provide heat to the heating chamber 4.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An external heating pyrolysis carbonization furnace for sludge carbonization treatment, comprising a base (1), characterized in that: The top right side of the base (1) is fixedly connected with a heating chamber (4), the top of the heating chamber (4) is provided with a heating cylinder (3), the left side of the heating cylinder (3) is communicated with a feeding chamber (5), the top of the feeding chamber (5) is provided with a feeding groove (8), the top left side of the base (1) is fixedly connected with a pneumatic cylinder (6), one end of the pneumatic cylinder (6) is fixedly connected with a push rod (7), the right side of the push rod (7) is fixedly connected with a push plate (9), the left side of the push plate (9) is slidably connected to the inner side of the feeding chamber (5), the top of the push plate (9) is fixedly connected with a connecting column (10), the top of the connecting column (10) is fixedly connected with a fixed baffle (11), the inner side of the fixed baffle (11) is provided with a sliding groove (12), the inner side of the sliding groove (12) is slidably connected with a movable baffle (13), the right side of the movable baffle (13) is fixedly connected with a limiting plate (14), the left side of the limiting plate (14) is slidably connected to the inner side of the sliding groove (12), the bottom left side of the movable baffle (13) is fixedly connected with an L-shaped sliding column (15), the outer wall of the push rod (7) is provided with a moving groove (16), the bottom of the L-shaped sliding column (15) is slidably connected to the inner side of the moving groove (16), the outer wall of the push rod (7) is provided with a limiting groove (17), the right side of the L-shaped sliding column (15) is slidably connected to the inner side of the limiting groove (17), and the outer wall of the heating chamber (4) is provided with a recycling mechanism (2).

2. The external heating pyrolysis carbonization furnace for sludge carbonization treatment according to claim 1, characterized in that: The recycling mechanism (2) comprises a long box (201), the bottom of the long box (201) is fixedly connected to the top of the base (1), the outer wall of the long box (201) is communicated with a square box (202), the top of the long box (201) and the square box (202) is fixedly connected with the same servo motor (205), the output end of the servo motor (205) is fixedly connected with a connecting plate (206), the four around of the connecting plate (206) is fixedly connected with a filter plate (207), the outer wall top of the heating cylinder (3) is communicated with an exhaust port (203), the top of the exhaust port (203) is communicated with a connecting pipe (204), the bottom of the connecting pipe (204) is communicated with the top right side of the long box (201), the front side of the long box (201) is communicated with an air outlet pipe (208), the other end of the air outlet pipe (208) is communicated with the outer wall of the heating chamber (4).

3. The external heating pyrolysis carbonization furnace for sludge carbonization treatment according to claim 2, characterized in that: The adjacent side of the plurality of filter plates (207) is fixedly connected with a clamping block (23), the outer wall of the connecting plate (206) is provided with a clamping groove (24), the outer wall of the plurality of clamping blocks (23) is slidably connected to the inner side of the corresponding clamping groove (24).

4. The external heating pyrolysis carbonization furnace for sludge carbonization treatment according to claim 2, characterized in that: The rear side of the square box (202) is provided with a front cover (26), the front cover (26) and the square box (202) are connected through a hinge (25).

5. The external heating pyrolysis carbonization furnace for sludge carbonization treatment according to claim 4, characterized in that: The outer wall of the front cover (26) is fixedly connected with a handle (28), the outer wall of the front cover (26) is provided with an observation window (27).

6. The external heating pyrolysis carbonization furnace for sludge carbonization treatment according to claim 1, characterized in that: The bottom of the air cylinder (6) is fixedly connected with a support frame one (18), and the outer wall of the support frame one (18) is provided with a controller (19).

7. The external heating pyrolysis carbonization furnace for sludge carbonization treatment according to claim 1, characterized in that: The top of the feeding groove (8) is provided with a feeding hopper (21), the top of the feeding hopper (21) is slidably connected with a sealing plug (22), and the outer wall bottom of the sealing plug (22) is slidably connected to the inner wall top of the feeding hopper (21).

8. The external heating pyrolysis carbonization furnace for sludge carbonization treatment according to claim 1, characterized in that: The top of the base (1) is fixedly connected with a support frame two (20), and the top of the support frame two (20) is fixedly connected to the bottom of the feeding chamber (5).

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