Extraction pipe based on sludge drying machine

Abstract

The utility model discloses an extraction tube based on a sludge dryer, and relates to the technical field of extraction tubes in sludge dryers, and the extraction tube is characterized by comprising a rotating frame and a workbench, a sliding rail is arranged on the workbench, limiting grooves are symmetrically arranged on the workbench at the position of the sliding rail, a protection box is connected in the sliding rail in a sliding mode, and the protection box is connected with the rotating frame in a sliding mode. The upper end of the protection box is connected with a handle, the protection box is provided with a pick-and-place mechanism, and the pick-and-place mechanism is used for installing the protection box on a workbench, so that the problems that in the background technology, the extraction pipe has the core function of automatically discharging condensate water, percolate or cleaning water, liquid cannot be normally discharged after blockage, and the operation is inconvenient are solved. The problems that liquid is accumulated in the equipment (such as a drying chamber, a condensing system or a collecting tank) due to the fact that the sludge enters the drying chamber, the effective drying area is reduced and the drying efficiency is reduced when accumulated liquid occupies the drying space, and the water content is increased and the product quality is influenced due to the fact that water retention possibly reversely permeates into the dried sludge are solved.

Description

Technical Field

[0001] This utility model relates to the field of extraction tube technology in sludge dryers, and more specifically, it relates to an extraction tube based on a sludge dryer. Background Technology

[0002] A sludge dryer is a device used to remove moisture from sludge (usually from sewage treatment plants, industrial wastewater treatment, or natural sedimentation) through physical or chemical methods, thereby significantly reducing its moisture content. Its main purpose is to achieve sludge reduction, stabilization, and resource utilization, while simultaneously reducing the cost and environmental burden of subsequent treatment or disposal.

[0003] The extraction pipe in a sludge dryer is a pipeline device that automatically discharges accumulated liquid (such as condensate, washing water, or sludge leachate) from inside the equipment by utilizing the principles of liquid gravity and air pressure difference. Its core function is to achieve non-powered liquid transport through the "siphon effect," avoiding water accumulation or blockage inside the equipment and ensuring the normal operation of the dryer.

[0004] In existing sludge dryers, during the re-drainage of the extraction tube, viscous components in the sludge (such as sugars, proteins, or colloidal substances) easily adhere to the inner wall of the extraction tube, forming a sediment layer that gradually reduces the flow cross-sectional area. Simultaneously, the sludge itself contains incompletely dehydrated solid particles, organic matter, and inorganic salts. Leachate or condensate generated during the drying process may carry these impurities, leading to blockage of the extraction tube. Since the core function of the extraction tube is to automatically discharge condensate, leachate, or washing water, blockage prevents normal liquid discharge, causing liquid accumulation inside the equipment (such as the drying chamber, condensation system, or collection tank). This accumulated liquid occupies drying space, reducing the effective drying area and lowering drying efficiency. Furthermore, water retention may seep back into the dried sludge, causing the moisture content to rise and affecting product quality.

[0005] Therefore, in order to solve the above-mentioned technical problems, this application proposes an extraction tube based on a sludge dryer. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an extraction tube based on a sludge dryer.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an extraction tube based on a sludge dryer, comprising a rotating frame and a worktable;

[0008] The workbench is provided with a slide rail, and the workbench is symmetrically provided with limit grooves at the slide rail. A protective box is slidably connected in the slide rail. A handle is connected to the upper end of the protective box. The protective box is provided with a pick-and-place mechanism for installing the protective box on the workbench.

[0009] A rotating shaft is rotatably connected through the protective box. A motor is connected inside the protective box. The output end of the motor is connected to one end of the rotating shaft inside the protective box. An electric telescopic rod is connected to one end of the rotating shaft outside the protective box.

[0010] The electric telescopic rod is equipped with a transmission mechanism, which is provided with multiple connecting columns and gears, and each connecting column is slidably inserted with a roller brush;

[0011] The protective box is equipped with a rotating mechanism to control the rotation of each gear;

[0012] Each of the connecting posts is equipped with a fixing mechanism for fixing each roller brush;

[0013] Each of the connecting posts is provided with a limit mechanism for limiting the movement of the fixing mechanism.

[0014] Preferably, a drying barrel is connected to the rotating frame, a rotor shaft tube is connected to one end of the drying barrel, an observation port is connected to the rotor shaft tube, and a support plate is connected to the end of the rotor shaft tube away from the drying barrel. A rotor shaft head is connected to one side of the support plate by multiple bolts. An extraction tube is connected to the rotor shaft head by internal threads, and a workbench is connected to the rotor shaft head to facilitate the drying of sludge.

[0015] Preferably, the loading and unloading mechanism includes a sliding groove, a spring A, and a limiting plate. The protective box is symmetrically provided with sliding grooves, and a limiting plate is slidably connected in both sliding grooves. Both limiting plates are connected to the protective box by spring A, and both limiting plates can slide back and forth in the corresponding limiting grooves, which facilitates the storage of the equipment.

[0016] Preferably, the rotating mechanism includes a support frame and an annular rack. The support frame is connected to the protective box, and the annular rack is connected to the support frame, which facilitates the rotation of each roller brush to clean the inside of the extraction tube.

[0017] Preferably, the transmission mechanism includes a connecting block, a stabilizing plate, and a support rod. The telescopic end of the electric telescopic rod is connected to the connecting block. Multiple stabilizing plates are symmetrically connected to the connecting block. A support rod is rotatably connected through each stabilizing plate. One end of each support rod is connected to a connecting column, and the other end of each support rod is connected to a gear. Each gear meshes with a ring rack to facilitate the transmission of the roller brush.

[0018] Preferably, each of the fixing mechanisms includes a sliding hole, a fixing rod, a spring B, and a fixing hole. Each of the connecting posts has a sliding hole through it, and a fixing rod is slidably connected in each sliding hole. Each fixing rod is connected to the adjacent connecting posts by a spring B. Each roller brush has a fixing hole at one end inserted into the connecting post, which facilitates the quick installation and removal of each roller brush, thereby improving the efficiency of installing and removing each roller brush and improving the efficiency of cleaning each roller brush.

[0019] Preferably, each of the limiting mechanisms includes a horizontal plate, a plug-in rod, a spring C, an inclined surface, and a plug-in hole. A horizontal plate is connected to each of the connecting columns, and a plug-in rod is slidably connected through each of the horizontal plates. Each plug-in rod is connected to the adjacent connecting columns by a spring C, and the side of each plug-in rod near the connecting column is provided with a smooth inclined surface. Each fixing rod has a plug-in hole to facilitate the insertion of the plug-in rod into the plug-in slot, forming a dynamic self-locking mechanism. This effectively resists high-frequency vibration or inertial impact during equipment operation and prevents the fixing rod from accidentally slipping off.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In this utility model, a rotating mechanism installed on the protective box activates the motor inside the protective box, causing the connected rotating shaft and transmission mechanism to rotate. When the transmission mechanism rotates, the connected connecting columns and gears rotate. When each connecting column rotates, each inserted roller brush rotates. Simultaneously, each gear rotates on the meshing ring rack and rotates on its own axis, causing each roller brush to rotate. At this time, each roller brush will revolve with the rotating shaft and clean the inner wall of the extraction tube through the rotation of each gear. This solves the problem in the background technology where the core function of the extraction tube is to automatically discharge condensate, leachate, or washing water. When the tube is blocked, the liquid cannot be discharged normally, resulting in liquid accumulation inside the equipment (such as the drying chamber, condensation system, or collection tank). When the liquid accumulates, it occupies the drying space, reducing the effective drying area and lowering the drying efficiency. At the same time, the retained moisture may seep back into the dried sludge, causing the moisture content to rise again and affecting product quality.

[0022] 2. In this utility model, by using a fixing mechanism on each connecting post, the fixing rod is gripped and pulled outward. At this time, the moving fixing rod will stretch the connected spring B. Then, the roller brush is inserted into the connecting post. After that, the fixing rod is released. At this time, the stretched spring B will rebound and allow the fixing rod to re-insert into the fixing hole. This can effectively and quickly install and remove each roller brush, thereby improving the efficiency of installing and removing each roller brush, and also improving the efficiency of cleaning each roller brush.

[0023] 3. In this utility model, through the limiting mechanism set on each connecting column, the end of the fixed rod that passes through the connecting column will connect with the inclined surface of the plug rod and move the plug rod upward until the plug hole in the limiting rod corresponds to the plug rod. Then the plug rod is released, and the stretched spring B will pull the plug rod into the plug groove through its elasticity, thereby limiting the fixed rod. The plug rod can be effectively inserted into the plug groove to form a dynamic self-locking, which can effectively resist high-frequency vibration or inertial impact during equipment operation and prevent the fixed rod from accidentally slipping off.

[0024] 4. In this utility model, by setting up a pick-and-place mechanism on the protective box, the two limiting plates are grasped and moved. At this time, the two limiting plates will slide in their respective slide grooves and compress the springs A connected to them. Then, the protective box is inserted into the slide rail on the worktable. Next, the two limiting plates are released. At this time, the compressed springs A will push the connected limiting plates into the corresponding limiting grooves through their elasticity, thereby fixing the protective box on the worktable and effectively storing the equipment, thereby improving the convenience of storage. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the workbench in this utility model;

[0028] Figure 3 This is a structural schematic diagram of the cross-sectional view of the protective box in this utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the electric telescopic rod in this utility model;

[0030] Figure 5 This is a schematic diagram of the stabilizing plate in this utility model;

[0031] Figure 6 This utility model Figure 5 A structural schematic diagram of the enlarged view at point A in the middle.

[0032] 1. Rotating frame; 2. Drying drum; 3. Rotor shaft tube; 4. Observation port; 5. Support plate; 6. Rotor shaft head; 7. Bolt; 8. Extraction tube; 9. Worktable; 10. Slide rail; 11. Limiting groove; 12. Picking and placing mechanism; 1201. Slide groove; 1202. Spring A; 1203. Limiting plate; 13. Protective box; 14. Handle; 15. Motor; 16. Rotating shaft; 17. Rotating mechanism; 1701. Support frame; 1702. Ring rack; 18. 19. Electric telescopic pole; 19. Transmission mechanism; 1901. Connecting block; 1902. Stabilizing plate; 1903. Support rod; 20. Connecting column; 21. Gear; 22. Fixing mechanism; 2201. Sliding hole; 2202. Fixing rod; 2203. Spring B; 2204. Fixing hole; 23. Roller brush; 24. Limiting mechanism; 2401. Horizontal plate; 2402. Insertion rod; 2403. Spring C; 2404. Inclined surface; 2405. Insertion hole. Detailed Implementation

[0033] like Figure 1-6 As shown, this utility model provides an extraction tube based on a sludge dryer, including a rotating frame 1 and a worktable 9. A drying barrel 2 is connected to the rotating frame 1 for drying sludge. One end of the drying barrel 2 is connected to a rotor shaft tube 3, which is connected to an observation port 4. The end of the rotor shaft tube 3 away from the drying barrel 2 is connected to a support plate 5. One side of the support plate 5 is connected to a rotor shaft head 6 by multiple bolts 7. An extraction tube 8 is internally threaded onto the rotor shaft head 6 for discharging liquid from the worktable 9. The worktable 9 is connected to the rotor shaft head 6.

[0034] The workbench 9 is equipped with a slide rail 10, and symmetrical limit grooves 11 are provided on the workbench 9 at the slide rail 10. A protective box 13 is slidably connected in the slide rail 10. A handle 14 is connected to the upper end of the protective box 13. The protective box 13 is provided with a pick-and-place mechanism 12 for installing the protective box 13 on the workbench 9. It is used to achieve the following: by holding the two limit plates 1203 and moving them, the two limit plates 1203 will slide in their respective slide grooves 1201 and compress their respective connected springs A1202. Then, the protective box 13 is inserted into the slide rail 10 on the workbench 9. Then, the two limit plates 1203 are released. At this time, the compressed springs A1202 will push the connected limit plates 1203 into the corresponding limit grooves 11 through their elasticity. This achieves the purpose of fixing the protective box 13 on the workbench 9, which can effectively store the equipment and improve the convenience of storage.

[0035] The pick-and-place mechanism 12 includes a slide groove 1201, a spring A1202, and a limiting plate 1203. The protective box 13 is symmetrically provided with slide grooves 1201, which are used to ensure the stability of the sliding of the limiting plate 1203. The limiting plate 1203 is slidably connected in both slide grooves 1201, which are used to fix the protective box 13 on the worktable 9 by inserting the two limiting plates 1203 into the corresponding limiting grooves 11. The two limiting plates 1203 are connected to the protective box 13 by springs A1202, which are used to enable the limiting plate 1203 to automatically reset and fix the limiting plate 1203 in the limiting grooves 11. Both limiting plates 1203 can slide back and forth in the corresponding limiting grooves 11.

[0036] A rotating shaft 16 is rotatably connected through the protective box 13. A motor 15 is connected inside the protective box 13, which is used to control the rotation of the rotating shaft 16. The output end of the motor 15 is connected to one end of the rotating shaft 16 located inside the protective box 13. An electric telescopic rod 18 is connected to one end of the rotating shaft 16 located outside the protective box 13, which is used to control the movement of each roller brush 23.

[0037] The electric telescopic rod 18 is equipped with a transmission mechanism 19, which is used to transmit and support each roller brush 23. The transmission mechanism 19 is equipped with multiple connecting posts 20 and gears 21, which are used to enable each gear 21 to rotate on the ring rack 1702, thereby enabling each gear 21 to rotate and each roller brush 23 to rotate. Each connecting post 20 is slidably inserted with a roller brush 23, which is used to clean the inner wall of the extraction tube 8.

[0038] The transmission mechanism 19 includes a connecting block 1901, a stabilizing plate 1902, and a support rod 1903. The telescopic end of the electric telescopic rod 18 is connected to the connecting block 1901. Multiple stabilizing plates 1902 are symmetrically connected to the connecting block 1901 to ensure the stable rotation of the support rod 1903. Each stabilizing plate 1902 is rotatably connected to a support rod 1903 to drive the roller brush 23. One end of each support rod 1903 is connected to a connecting post 20, and the other end of each support rod 1903 is connected to a gear 21. Each gear 21 meshes with a ring rack 1702 to enable each gear 21 to rotate.

[0039] The protective box 13 is equipped with a rotating mechanism 17, which controls the rotation of each gear 21. This mechanism is used to start the motor 15 inside the protective box 13 and cause the connected rotating shaft 16 and transmission mechanism 19 to rotate. When the transmission mechanism 19 rotates, it will cause the connected connecting column 20 and gear 21 to rotate. When each connecting column 20 rotates, it will cause each inserted roller brush 23 to rotate. At the same time, each gear 21 will rotate on the meshing annular rack 1702 and rotate on its own axis, causing each roller brush 23 to rotate on its own axis. At this time, each roller brush 23 will revolve with the rotating shaft 16 and clean the inner wall of the extraction tube 8 by rotating on its own axis through each gear 21, which can effectively clean the impurities adhering to the inner wall of the extraction tube 8.

[0040] The rotating mechanism 17 includes a support frame 1701 and an annular rack 1702. The support frame 1701 is connected to the protective box 13, and the annular rack 1702 is connected to the support frame 1701, which is used to enable each gear 21 to rotate.

[0041] Each connecting post 20 is equipped with a fixing mechanism 22 for fixing each roller brush 23. It is used to grip the fixing rod 2202 and pull it outward. At this time, the moving fixing rod 2202 will stretch the connected spring B2203. Then, the roller brush 23 is inserted into the connecting post 20. Then, the fixing rod 2202 is released. At this time, the stretched spring B2203 will rebound to allow the fixing rod 2202 to re-insert into the fixing hole 2204. This can effectively and quickly install and remove each roller brush 23, thereby improving the efficiency of installing and removing each roller brush 23, and also improving the efficiency of cleaning each roller brush 23.

[0042] Each fixing mechanism 22 includes a sliding hole 2201, a fixing rod 2202, a spring B 2203, and a fixing hole 2204. Each connecting post 20 has a sliding hole 2201 through it. A fixing rod 2202 is slidably connected in each sliding hole 2201. The fixing rod 2202 is inserted into the fixing hole 2204 to fix the roller brush 23 in the connecting post 20. Each fixing rod 2202 is connected to the adjacent connecting posts 20 by a spring B 2203. The spring B 2203 enables the fixing rod 2202 to have an automatic reset function and can fix the fixing rod 2202 in the fixing hole 2204. The fixing hole 2204 is opened at one end of each roller brush 23 that is inserted into the connecting post 20.

[0043] Each connecting post 20 is equipped with a limiting mechanism 24 for limiting the fixing mechanism 22. When the end of the fixing rod 2202 that passes through the connecting post 20 is connected to the inclined surface 2404 of the plug rod 2402, the plug rod 2402 moves upward until the plug hole 2405 in the limiting rod corresponds to the plug rod 2402. Then the plug rod 2402 is released. At this time, the stretched spring B2203 will pull the plug rod 2402 into the plug groove through its elasticity, thereby limiting the fixing rod 2202. The plug rod 2402 can be effectively inserted into the plug groove to form a dynamic self-locking, which can effectively resist high-frequency vibration or inertial impact during equipment operation and prevent the fixing rod 2202 from accidentally slipping off.

[0044] Each limiting mechanism 24 includes a horizontal plate 2401, a connecting rod 2402, a spring C2403, an inclined surface 2404, and a connecting hole 2405. Each connecting post 20 is connected to a horizontal plate 2401, and a connecting rod 2402 is slidably connected through each horizontal plate 2401. This allows the connecting rod 2402 to be inserted into the connecting hole 2405, thereby fixing the connecting rod 2402 within the connecting hole 2405 and preventing the fixing rod 220 from being fixed. 2. In case of loosening or detachment due to physical factors, each plug rod 2402 is connected to the adjacent connecting post 20 by a spring C2403, which is used to enable the plug rod 2402 to have an automatic reset function and to fix the plug hole 2405 in the plug hole 2405. Each plug rod 2402 has a smooth inclined surface 2404 on the side near the connecting post 20, and each fixing rod 2202 has a plug hole 2405.

[0045] Working principle: When it is necessary to clean the extraction tube 8, first hold the two limiting plates 1203 and move them. At this time, the two limiting plates 1203 will slide in their respective slide grooves 1201 and compress the springs A1202 connected to them until the two limiting plates 1203 are disengaged from their respective limiting grooves 11. Finally, remove the protective box 13 from the slide rail 10 on the worktable 9.

[0046] Next, hold handle 14 and insert each roller brush 23 into extraction tube 8. Then, start the motor 15 inside the protection box 13 and rotate the connected shaft 16. When the shaft 16 rotates, the connected electric telescopic rod 18 will rotate. When the electric telescopic rod 18 rotates, the connected connecting block 1901 will rotate. When the connecting block 1901 rotates, each connected stabilizing plate 1902 will rotate. When each stabilizing plate 1902 rotates, each connected support rod 1903 will rotate. When each support rod 1903 rotates with the electric telescopic rod 18, the connected connecting column 20 will rotate. When each connecting column 20 rotates, each inserted roller brush 23 will rotate. At this time, each roller brush 23 rotating with the shaft 16 will adhere to the inner wall of extraction tube 8 for cleaning.

[0047] Simultaneously, when each support rod 1903 rotates, it will cause the gear 21 connected to it to rotate. At this time, each gear 21 will rotate on the meshing annular rack 1702 and achieve its own rotation. When each gear 21 rotates, it will cause the support rod 1903 connected to it to rotate. When each support rod 1903 rotates, it will cause the connecting column 20 connected to it to rotate. When each connecting column 20 rotates, it will cause the roller brush 23 inserted to rotate. At this time, each roller brush 23 will revolve with the rotating shaft 16 and clean the inner wall of the extraction tube 8 through the rotation of each gear 21.

[0048] When cleaning the roller brush 23, first grasp the insert rod on the horizontal plate 2401 and move it upwards. This upward movement of the insert rod will stretch the connected spring C2403 until the insert rod is completely disengaged from the insert hole 2405. Next, grasp the fixing rod 2202 and pull it outwards. This movement of the fixing rod 2202 will stretch the connected spring B2203 until the fixing rod 2202 is disengaged from the fixing hole 2204. At this point, remove the roller brush 23 from the connecting post 20. After cleaning the roller brush 23, grasp the fixing rod 2202 again and pull it outwards. This movement of the fixing rod 2202 will stretch the connected spring B2203. 3. Stretch the rod, then insert the roller brush 23 into the connecting post 20. Next, release the fixing rod 2202. At this time, the stretched spring B2203 will rebound and cause the fixing rod 2202 to re-insert into the fixing hole 2204. At this time, the end of the fixing rod 2202 that passes through the connecting post 20 will connect with the inclined surface 2404 of the insertion rod 2402 and cause the insertion rod 2402 to move upward until the insertion hole 2405 in the limiting rod corresponds to the insertion rod 2402. Then, release the insertion rod 2402. At this time, the stretched spring B2203 will rebound and pull the insertion rod 2402 into the insertion groove, thereby achieving the limitation of the fixing rod 2202.

[0049] After cleaning the extraction tube 8, hold the two limiting plates 1203 and move them. The two limiting plates 1203 will slide in their respective slide grooves 1201 and compress their respective connected springs A1202. Then insert the protective box 13 into the slide rail 10 on the worktable 9. Then release the two limiting plates 1203. The compressed springs A1202 will push the connected limiting plates 1203 into the corresponding limiting grooves 11 through their elasticity, thereby fixing the protective box 13 on the worktable 9.

[0050] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. An extraction tube based on a sludge dryer, characterized by: Includes a rotating frame (1) and a worktable (9); The workbench (9) is provided with a slide rail (10), and the workbench (9) is provided with symmetrical limit grooves (11) at the slide rail (10). A protective box (13) is slidably connected in the slide rail (10). A handle (14) is connected to the upper end of the protective box (13). A pick-and-place mechanism (12) is provided on the protective box (13) for installing the protective box (13) on the workbench (9). A rotating shaft (16) is rotatably connected through the protective box (13). A motor (15) is connected inside the protective box (13). The output end of the motor (15) is connected to one end of the rotating shaft (16) inside the protective box (13). An electric telescopic rod (18) is connected to one end of the rotating shaft (16) outside the protective box (13). The electric telescopic rod (18) is provided with a transmission mechanism (19), which is provided with multiple connecting posts (20) and gears (21). Each connecting post (20) is slidably inserted with a roller brush (23). The protective box (13) is provided with a rotating mechanism (17) for controlling the rotation of each gear (21); Each of the connecting posts (20) is provided with a fixing mechanism (22) for fixing each roller brush (23); Each of the connecting posts (20) is provided with a limiting mechanism (24) for limiting the fixing mechanism (22).

2. An extraction tube for use in a sludge dryer according to claim 1, characterized in that: A drying barrel (2) is connected to the rotating frame (1). A rotor shaft tube (3) is connected to one end of the drying barrel (2). An observation port (4) is connected to the rotor shaft tube (3). A support plate (5) is connected to the end of the rotor shaft tube (3) away from the drying barrel (2). A rotor shaft head (6) is connected to one side of the support plate (5) by multiple bolts (7). An extraction tube (8) is connected to the rotor shaft head (6) by internal threads. A worktable (9) is connected to the rotor shaft head (6).

3. A pipe for extraction in a sludge dryer according to claim 1, characterized in that: The picking and placing mechanism (12) includes a slide groove (1201), a spring A (1202) and a limiting plate (1203). The protective box (13) is symmetrically provided with slide grooves (1201). The limiting plates (1203) are slidably connected in both slide grooves (1201). The two limiting plates (1203) are connected to the protective box (13) through spring A (1202). Both limiting plates (1203) can slide back and forth in the corresponding limiting grooves (11).

4. An extraction tube for use in a sludge dryer according to claim 3, characterized in that: The rotating mechanism (17) includes a support frame (1701) and an annular rack (1702). The support frame (1701) is connected to the protective box (13), and the annular rack (1702) is connected to the support frame (1701).

5. An extraction tube for use in a sludge dryer according to claim 4, characterized in that: The transmission mechanism (19) includes a connecting block (1901), a stabilizing plate (1902), and a support rod (1903). The telescopic end of the electric telescopic rod (18) is connected to the connecting block (1901). Multiple stabilizing plates (1902) are symmetrically connected to the connecting block (1901). A support rod (1903) is rotatably connected through each stabilizing plate (1902). A connecting column (20) is connected to one end of each support rod (1903), and a gear (21) is connected to the other end of each support rod (1903). Each gear (21) meshes with a ring rack (1702).

6. An extraction tube for use in a sludge dryer according to claim 5, characterized in that: Each of the fixing mechanisms (22) includes a sliding hole (2201), a fixing rod (2202), a spring B (2203), and a fixing hole (2204). Each of the connecting posts (20) has a sliding hole (2201) through it. A fixing rod (2202) is slidably connected in each of the sliding holes (2201). Each fixing rod (2202) is connected to the connecting posts (20) that are close to each other by a spring B (2203). Each roller brush (23) has a fixing hole (2204) at one end inserted into the connecting post (20).

7. An extraction tube for use in a sludge dryer according to claim 6, characterized in that: Each of the limiting mechanisms (24) includes a horizontal plate (2401), a plug rod (2402), a spring C (2403), an inclined surface (2404), and a plug hole (2405). Each of the connecting posts (20) is connected to a horizontal plate (2401). Each of the horizontal plates (2401) is slidably connected to a plug rod (2402). Each plug rod (2402) is connected to the connecting posts (20) that are close to each other by a spring C (2403). The side of each plug rod (2402) close to the connecting post (20) is provided with a smooth inclined surface (2404). Each of the fixing rods (2202) is provided with a plug hole (2405).

Images