A sludge drying system

Abstract

This invention discloses a sludge drying system, including a processing box, a drying assembly, and a recovery box. The drying assembly is installed on one side of the processing box and is connected to the interior of the processing box. The recovery box is fixedly installed at the lower end of the processing box. A drying shell is installed inside the processing box. A bracket is installed on the rear end face of the drying shell. A material distribution frame is rotatably installed on the head of the bracket. An electric cylinder for controlling the angle of the material distribution frame is also provided on the head of the bracket. An automatic scraper is installed in the drying shell. By installing a material distribution frame in the processing box, this invention ensures that the material distribution frame can receive material through the receiving shell and cooperate with the packing shell. In this way, the sludge can be diverted by the guide plate, so that the sludge can be stably dispersed at different positions on the upper end face of the drying shell. At the same time, the electric cylinder can be activated during the feeding process to drive the material distribution frame to swing, further dispersing the sludge.

Description

Technical Field

[0001] This invention relates to the field of sludge drying treatment technology, specifically a sludge drying treatment system. Background Technology

[0002] Currently, river silt is a flocculent and honeycomb structure formed by the deposition of fine particles such as clay minerals in slow-moving water environments such as oceans or lakes, under the influence of interparticle electrostatic forces and molecular attraction. Silt is both a waste and a reusable resource. It can be dried and made into brick-like building materials, making silt drying a common treatment method. There are two main existing drying methods: one is to manually spread and flatten the silt on the ground and then dry it under the sun. This method has low overall processing efficiency and is labor-intensive, making it unsuitable for large-scale silt treatment. The other method is to use a sludge drying machine to dry the sludge.

[0003] Regarding the aforementioned technologies, the inventors have discovered that most existing sludge dryers use hot air blowers to dry sludge. However, sludge tends to accumulate when it enters the dryer, especially when the amount of sludge produced is large. This causes the sludge inside to be encased by the outside, making it difficult for the sludge to be directly dried by heat during the drying process. Consequently, the accumulated sludge is difficult to dry quickly. Furthermore, the existing hot air blower-based drying method is inefficient and has poor drying effect on the bottom of the sludge, thus affecting the overall drying efficiency. Additionally, the sludge tends to accumulate inside the dryer during the drying process, making it inconvenient to clean. Summary of the Invention

[0004] To address the problems mentioned in the background art, this application provides a sludge drying treatment system.

[0005] This invention is implemented as follows:

[0006] A sludge drying system includes a processing box, a drying assembly, and a recovery box. The drying assembly is installed on one side of the processing box and is connected to the interior of the processing box. The recovery box is fixedly installed at the lower end of the processing box. A drying shell is installed inside the processing box. A bracket is installed on the rear end face of the drying shell. A material distribution frame is rotatably installed on the head of the bracket. An electric cylinder for controlling the angle of the material distribution frame is also provided on the head of the bracket. An automatic scraper is installed in the drying shell and is horizontally slidably connected to the drying shell. An adjusting screw for driving the movement of the automatic scraper is also installed on the outer side of the drying shell. A drive motor for driving the adjusting screw is also fixedly installed on the drying shell. A cover for shielding the side of the drying shell is also slidably installed on the automatic scraper.

[0007] By adopting the above technical solution, the drying shell can be installed in the processing box when needed. A bracket is fixedly installed on the drying shell to ensure the distribution rack can be installed via the bracket. During sludge drying, the distribution rack can evenly distribute the sludge onto the drying shell. An electric cylinder allows for easy control of the distribution rack's oscillation, further distributing the sludge evenly onto the drying shell. Once the sludge is distributed, a drying component (such as a hot air blower) can blow air into the processing box to dry the sludge. After drying is complete, the drive motor can be used to rotate the adjusting screw. To better determine the drying status of the sludge, a corresponding sludge moisture content monitoring mechanism can be installed inside the equipment. This makes it easy to adjust the drying temperature and time in a timely manner when processing sludge with different moisture contents, making it more convenient to use. Then, the adjusting screw drives the automatic scraper to move on the drying shell, and the scraper pushes the dried sludge on the drying shell into the recycling box at the bottom. The cleaning of the scraper can effectively prevent the dried sludge from adhering to the drying shell.

[0008] Furthermore, the drying shell includes three side frames and a metal plate. The metal plate is installed in the middle of the three side frames and is fixedly connected to the three side frames. An electric heating tube is also provided on the lower end face of the metal plate and is fixedly connected to the metal plate.

[0009] By adopting the above technical solution, when the drying shell is needed, a metal plate can be installed through a three-sided frame to ensure that the sludge is received evenly through the metal plate. In order to ensure that the sludge received by the metal plate is better dispersed, a vibration motor can be fixedly installed at the lower end of the metal plate. This ensures that the sludge does not accumulate in the middle of the metal plate and that the sludge in the middle can also dry quickly, improving the overall efficiency. At the same time, by installing an electric heating tube on the lower end of the metal plate, the metal plate is heated through the electric heating tube. This, together with the air drying component, achieves double drying processing, thereby greatly increasing the overall drying efficiency. The three-sided frame ensures that the sludge accumulates more stably on the metal plate, and the three-sided frame also blocks three sides of the metal plate, while the left end is used to discharge the dried sludge.

[0010] Furthermore, the bracket includes a support rod and a bending frame. The bending frame is symmetrically arranged at the head of the support rod and is integrally formed with the support rod. An auxiliary rod for power cylinder installation is also provided on the bending frame, and the auxiliary rod is vertically fixedly connected to the bending frame.

[0011] By adopting the above technical solution, when the bracket is in use, the bending frame can be supported by the frame rod, and the rotating frame can be supported by the bending frames on both sides. The rotating frame can be rotated and installed at the head of the bending frame. At the same time, by setting an auxiliary rod on the bending frame, it is convenient to install the electric cylinder through the auxiliary rod. The end of the electric cylinder can be rotatably installed on the auxiliary rod, so that the angle of the electric cylinder can be flexibly adjusted during use.

[0012] Furthermore, the material distribution rack includes a receiving shell, a dispersing shell, and a guide plate. The receiving shell is fixedly installed at the head of the dispersing shell, and the guide plate is disposed in the dispersing shell, and the guide plate and the dispersing shell are integrally formed.

[0013] By adopting the above technical solution, when the material distribution rack is needed, the receiving shell can cooperate with the filling shell to receive the sludge. At the same time, by setting the dispersion shell and the guide plate, it is ensured that after the sludge passes through the receiving shell and enters the dispersion shell, it can flow out from different positions at the bottom of the dispersion shell. This achieves the purpose of dispersing the filling material on the drying shell and avoids the situation where the sludge is piled up in the same position and is difficult to dry. Several scrapers can also be installed at the bottom of the material distribution rack. After the filling material is dispersed, the scrapers can be used to scrape the sludge during the sludge drying process, which helps to dry it quickly.

[0014] Furthermore, a rotating frame that rotates with the bending frame is provided on the outer side of the receiving shell. The rotating frame is fixedly connected to the receiving shell, and a mating plate connected to the output end of the electric cylinder is also fixedly installed on the rotating frame.

[0015] By adopting the above technical solution, after a rotating frame is installed on the outer side of the receiving shell, the rotating frame can be connected to the electric cylinder through a mating plate, so that the angle of the rotating frame can be controlled by the extension and retraction of the electric cylinder, thereby achieving the purpose of adjusting the overall use angle of the material distribution frame.

[0016] Furthermore, the automatic scraper includes a main frame, a side frame, and a multi-head scraper. The side frame is fixedly installed on one side of the main frame, and the multi-head scraper is installed on the lower end face of the main frame, and the multi-head scraper is longitudinally slidably connected to the main frame.

[0017] By adopting the above technical solution, when the automatic scraper is in use, the multi-head scraper can be installed on the main frame to ensure that the multi-head scraper can slide flexibly on the main frame. At the same time, the side frame is set to ensure that the main frame is stably installed on the three sides and can be used in conjunction with the adjusting screw.

[0018] Furthermore, the main frame includes a plate and side rods. The side rods are symmetrically installed on the side of the plate and are vertically fixed to the plate. A limit groove is formed on the upper end face of the side rod. The side frame includes a top plate, a side plate and a connecting screw sleeve. The side plate is vertically fixed on the outer side of the top plate and the connecting screw sleeve is fixedly installed on the lower end face of the side plate.

[0019] By adopting the above technical solution, when the main frame is in use, the guide rod can be installed through the plate, and the cover can be installed through the side rod. At the same time, the setting of the limiting groove ensures that it cooperates with the limiting strip on the cover. When the limiting strip on the cover slides to the end of the limiting groove, the plate can drive the cover to move synchronously, thereby achieving the purpose of flexibly opening and closing the cover.

[0020] Furthermore, a guide rod is installed on the upper end face of the multi-head scraper. The guide rod is vertically and fixedly connected to the multi-head scraper, and a tension spring is sleeved on the guide rod. A top cover is fixedly installed on the head of the guide rod. The head of the tension spring is fixedly connected to the top cover, and the lower end of the tension spring is fixedly connected to the upper end face of the plate.

[0021] By adopting the above technical solution, when the multi-head scraper needs to be installed, the guide rod can pass through the plate body. At the same time, by installing a top cover at the head of the guide rod, the tension spring can be easily installed. During use, the tension spring screw pulls the multi-head scraper as a whole with a downward force, which can ensure that the lower end of the multi-head scraper can be stably supported on the metal plate for scraping operations.

[0022] Furthermore, the cover includes an outer plate and an insert block. The insert block is fixedly installed on the inner side of the outer plate. A right-angle plate that cooperates with the side rod is symmetrically installed on the upper end face of the insert block. A limiting strip that cooperates with the limiting groove is provided on the inner side of the right-angle plate. The limiting strip is integrally formed with the right-angle plate.

[0023] By adopting the above technical solution, when the cap is in use, the three sides of the frame can be covered by the outer plate and the insert block, which can ensure that the silt is stably laid on the metal plate. At the same time, the right-angle plate can be set to ensure that the cap can be slidably installed on the side rod, and the limiting strip set on the right-angle plate can cooperate with the limiting groove on the side rod.

[0024] Furthermore, a packing shell is installed on the upper surface of the processing box, and an air outlet pipe is installed on the side of the processing box away from the drying component. Both the packing shell and the air outlet pipe are fixedly connected to the processing box.

[0025] By adopting the above technical solution, when it is necessary to fill the processing box, sludge can be added through the filling shell to ensure that the sludge can fall stably from the filling shell into the receiving shell. At the same time, by setting the air outlet pipe and the drying component on both sides of the processing box, it is ensured that the hot air in the drying component can stably pass through the sludge on the metal plate and then be discharged, thereby achieving the purpose of stable drying.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] (1) This invention installs a material distribution rack in the processing box, which ensures that the material distribution rack can receive materials through the receiving shell and the filling shell. In this way, the sludge can be diverted by the guide plate, so that the sludge can be stably dispersed at different positions on the upper end of the drying shell. At the same time, the electric cylinder can be activated during the feeding process to drive the material distribution rack to swing, further dispersing the sludge. By controlling the swinging and dispersing of the material distribution rack through the electric cylinder, the effect of quickly dispersing the sludge can be achieved. It has the advantages of high processing efficiency and simple operation, and facilitates the rapid drying of sludge.

[0028] (2) By installing an electric heating tube on the lower end of the metal plate, the sludge on the metal plate can be dried by the heating tube. This achieves the purpose of drying the lower end of the sludge. At the same time, the air drying components outside the processing box can be used to achieve the purpose of rapid drying of the sludge. The rapid drying of sludge by the electric heating tube has the effects of safe use, high drying efficiency and controllable drying temperature.

[0029] (3) By installing an automatic scraper on the drying shell, the automatic scraper can be stably attached to the upper surface of the metal plate by the multi-head scraper. When the multi-head scraper moves under the drive of the adjusting screw, the sludge on the metal plate can be automatically pushed down to the recycling box at the lower end, thus achieving the purpose of automatic cleaning and discharge. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the overall structure of the device of the present invention;

[0032] Figure 2 yes Figure 1 A three-dimensional view showing the combination of the drying shell, bracket, dispensing rack, automatic scraper, cover, and adjusting screw;

[0033] Figure 3 yes Figure 2 Top view of the device shown;

[0034] Figure 4 yes Figure 2 A three-dimensional view showing the combination of the drying shell, bracket, and material distribution rack;

[0035] Figure 5 yes Figure 4 Right view of the device shown;

[0036] Figure 6 yes Figure 5 A cross-sectional view of the device shown along the AA direction;

[0037] Figure 7 yes Figure 2 A three-dimensional view showing the automatic scraper and the sealing cap working together;

[0038] Figure 8 yes Figure 7 Front view of the device shown.

[0039] In the diagram: 1. Processing box; 11. Packing shell; 12. Air outlet duct; 2. Drying assembly; 3. Recovery box; 4. Drying shell; 41. Three-sided frame; 42. Metal plate; 421. Electric heating element; 5. Bracket; 50. Electric cylinder; 51. Frame rod; 52. Bending frame; 521. Auxiliary rod; 6. Material distribution frame; 61. Receiving shell; 611. Rotating frame; 612. Matching plate; 62. Dispersion shell; 63. Guide plate; 7. Self- 71. Moving scraper; 71. Main frame; 711. Plate; 712. Side rod; 713. Limiting groove; 72. Side frame; 721. Top plate; 722. Side plate; 723. Connecting screw sleeve; 73. Multi-head scraper; 731. Guide rod; 732. Tension spring; 733. Top cover; 8. Sealing cover; 81. Outer plate; 82. Insert block; 821. Right angle plate; 822. Limiting strip; 9. Adjusting screw; 90. Drive motor. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0041] Reference Figure 1 , Figure 2 and Figure 3 As shown, a sludge drying system includes a processing box 1, a drying assembly 2, and a recovery box 3. The drying assembly 2 is installed on one side of the processing box 1 and is connected to the interior of the processing box 1. The recovery box 3 is fixedly installed at the lower end of the processing box 1. A packing shell 11 is installed on the upper surface of the processing box 1, and an air outlet pipe 12 is installed on the side of the processing box 1 away from the drying assembly 2. Both the packing shell 11 and the air outlet pipe 12 are fixedly connected to the processing box 1. When packing is needed in the processing box 1, sludge can be added through the packing shell 11, ensuring that the sludge can stably fall from the packing shell 11 into the interior of the receiving shell 61. At the same time, by distributing the air outlet pipe 12 and the drying assembly 2 on opposite sides of the processing box 1, hot air from the drying assembly 2 can stably pass over the sludge on the metal plate 42 and then be discharged, thereby achieving the purpose of stable drying. The processing chamber 1 houses a drying shell 4, which includes a three-sided frame 41 and a metal plate 42. The metal plate 42 is installed in the middle of the three-sided frame 41 and is fixedly connected to it. An electric heating tube 421 is also installed on the lower end of the metal plate 42 and is fixedly connected to it. When the drying shell 4 is needed, the metal plate 42 can be installed through the three-sided frame 41 to ensure that the sludge is received evenly through the metal plate 42. At the same time, the electric heating tube 421 installed on the lower end of the metal plate 42 ensures that the metal plate 42 is heated. This, together with the air-drying component 2, achieves dual drying processing, thereby greatly increasing the overall drying efficiency. The three-sided frame 41 ensures that the sludge accumulates more stably on the metal plate 42, and also shields three sides of the metal plate 42, leaving one end open for discharging the dried sludge. An adjusting screw 9 that drives the automatic scraper 7 to move is also installed on the outer side of the drying shell 4, and a drive motor 90 that drives the adjusting screw 9 to rotate is also fixedly installed on the drying shell 4.

[0042] Reference Figure 4 and Figure 5As shown, a bracket 5 is installed on the rear end face of the drying shell 4. The bracket 5 includes a support rod 51 and a bending frame 52. The bending frame 52 is symmetrically arranged at the head of the support rod 51 and is integrally formed with the support rod 51. An auxiliary rod 521 for mounting the electric cylinder 50 is also provided on the bending frame 52. The auxiliary rod 521 is vertically and fixedly connected to the bending frame 52. When in use, the bracket 5 can support the bending frame 52 through the support rod 51, which facilitates the support of the rotating frame 611 through the bending frames 52 on both sides. The rotating frame 611 can be rotated and installed at the head of the bending frame 52. At the same time, by providing the auxiliary rod 521 on the bending frame 52, it is convenient to install the electric cylinder 50 through the auxiliary rod 521. The end of the electric cylinder 50 can be rotatably mounted on the auxiliary rod 521 so that the electric cylinder 50 can be flexibly adjusted in angle during use.

[0043] Reference Figure 5 and Figure 6 As shown, a material distribution frame 6 is rotatably mounted on the head of the bracket 5. An electric cylinder 50 for controlling the angle of the material distribution frame 6 is also provided on the head of the bracket 5. The material distribution frame 6 includes a receiving shell 61, a dispersing shell 62, and a guide plate 63. The receiving shell 61 is fixedly installed on the head of the dispersing shell 62, and the guide plate 63 is disposed within the dispersing shell 62, and the guide plate 63 is integrally formed with the dispersing shell 62. When the material distribution frame 6 is needed, it can use the receiving shell 61 to cooperate with the packing shell 11 to receive the deposited sludge. Simultaneously, the arrangement of the dispersing shell 62 and the guide plate 63 ensures that after the sludge passes through the receiving shell 61 and enters the dispersing shell 62, it can flow out from different positions at the lower end of the dispersing shell 62. This achieves the purpose of dispersing the packing material on the drying shell 4, avoiding the situation where sludge piles up in the same position and becomes difficult to dry. A rotating frame 611 is provided on the outer surface of the receiving shell 61, which rotatably engages with the bending frame 52. The rotating frame 611 is fixedly connected to the receiving shell 61, and a mating plate 612 connected to the output end of the electric cylinder 50 is also fixedly installed on the rotating frame 611. After the rotating frame 611 is provided on the outer surface of the receiving shell 61, the rotating frame 611 can be connected to the electric cylinder 50 through the mating plate 612, so that the angle of the rotating frame 611 can be controlled by the extension and retraction of the electric cylinder 50, thereby achieving the purpose of adjusting the overall operating angle of the material distribution frame 6.

[0044] Reference Figure 7 and Figure 8As shown, an automatic scraper rack 7 is installed in the drying shell 4. The automatic scraper rack 7 is horizontally slidably connected to the drying shell 4. The automatic scraper rack 7 includes a main frame 71, a side frame 72, and a multi-head scraper 73. The side frame 72 is fixedly installed on one side of the main frame 71, and the multi-head scraper 73 is installed on the lower end face of the main frame 71, and the multi-head scraper 73 is longitudinally slidably connected to the main frame 71. When in use, the automatic scraper rack 7 allows the multi-head scraper 73 to be installed through the main frame 71, ensuring that the multi-head scraper 73 can slide flexibly on the main frame 71. At the same time, the side frame 72 ensures that the main frame 71 is stably installed on the three-sided frame 41, and works in conjunction with the adjusting screw 9. The main frame 71 includes a plate 711 and side rods 712. The side rods 712 are symmetrically installed on the sides of the plate 711 and are vertically fixed to the plate 711. A limiting groove 713 is provided on the upper end face of the plate 711. The side frame 72 includes a top plate 721, a side plate 722, and a connecting screw sleeve 723. The side plate 722 is vertically fixed to the outer side face of the top plate 721, and the connecting screw sleeve 723 is fixedly installed on the lower end face of the side plate 722. When in use, the main frame 71 can be used to install the guide rod 731 through the plate 711 and the sealing cover 8 through the side rods 712. The limiting groove 713 is designed to cooperate with the limiting strip 822 on the sealing cover 8. When the limiting strip 822 on the sealing cover 8 slides to the end of the limiting groove 713, the plate 711 can drive the sealing cover 8 to move synchronously, thereby achieving the purpose of flexibly opening and closing the sealing cover 8. The automatic scraper rack 7 is also equipped with a cover 8 that slides on to cover the side of the drying shell 4. A guide rod 731 is mounted on the upper surface of the multi-head scraper 73. The guide rod 731 is vertically and fixedly connected to the multi-head scraper 73, and a tension spring 732 is sleeved on the guide rod 731. A top cover 733 is fixedly mounted on the head of the guide rod 731, and the head of the tension spring 732 is fixedly connected to the top cover 733. The lower end of the tension spring 732 is fixedly connected to the upper surface of the plate body 711. When the multi-head scraper 73 needs to be installed, it can pass through the plate body 711 through the guide rod 731. The top cover 733 at the head of the guide rod 731 facilitates the installation of the tension spring 732. During use, the tension spring 732 pulls the multi-head scraper 73 downwards, ensuring that the lower end of the multi-head scraper 73 is stably supported on the metal plate 42 for scraping operations.

[0045] Reference Figure 7As shown, the cover 8 includes an outer plate 81 and an insert block 82. The insert block 82 is fixedly installed on the inner side of the outer plate 81. A right-angle plate 821 that cooperates with the side rod 712 is symmetrically installed on the upper end face of the insert block 82. A limiting strip 822 that cooperates with the limiting groove 713 is provided on the inner side of the right-angle plate 821. The limiting strip 822 and the right-angle plate 821 are integrally formed. When the cover 8 is in use, the outer plate 81 and the insert block 82 can cover the three sides of the frame 41, which can ensure that the silt is stably laid on the metal plate 42. At the same time, the right-angle plate 821 ensures that the cover 8 can be slidably installed on the side rod 712, and the limiting strip 822 on the right-angle plate 821 cooperates with the limiting groove 713 on the side rod 712.

[0046] During the drying process, the electric heating element 421 and the air-drying assembly 2 can be activated first to preheat the inside of the processing chamber. During processing, the electric cylinder 50 is activated to drive the material distribution frame 6 to swing at the head of the support 5. Then, sludge is added through the packing shell 11, ensuring the sludge can pass through the packing shell 11 and fall into the receiving shell 61. The receiving shell 61 is made larger to stably receive the sludge added by the packing shell 11 during the swinging process. After the sludge passes through the material distribution frame 6 and is evenly distributed onto the metal plate 42, the drying process can proceed stably. After drying is complete, the drive motor 90 is activated to drive the adjusting screw 9 to rotate forward. This ensures that the adjusting screw 9 and the connecting screw sleeve 723 work together to move the automatic scraper frame 7 as a whole. During the process, the sludge has been dried, and the cover 8 can be opened from the drying shell 4. As the process continues, the cover 8 will be supported on the inner side of the processing box 1, and the head of the side rod 712 can extend to the outside of the processing box 1. This eliminates the need to leave space for the side rod 712 to move in the processing box 1, thereby reducing the overall volume of the processing box 1 and increasing the drying effect. After all the dried sludge on the metal plate 42 has been pushed off and fallen into the recycling box 3, the drive motor 90 can be started to drive the adjusting screw 9 to rotate in the opposite direction, so that the automatic scraper can be moved back to its original position. During the recycling process of the side rod 712, if the limiting strip 822 slides to one end of the limiting groove 713, the side rod 712 can move the cover 8 together, so that the cover 8 can be closed on the three-sided frame 41 again.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A sludge drying treatment system, comprising a treatment box (1), a drying assembly (2) and a recovery box (3), the drying assembly (2) is installed on one side of the treatment box (1), and the drying assembly (2) is communicated with the inside of the treatment box (1), and the recovery box (3) is fixedly installed at the lower end of the treatment box (1), characterized in that: The inside of the processing box (1) is provided with a drying shell (4), the rear end face of the drying shell (4) is provided with a bracket (5), the head of the bracket (5) is rotatably provided with a distribution rack (6), the head of the bracket (5) is further provided with an electric cylinder (50) for controlling the angle of the distribution rack (6), the drying shell (4) is provided with an automatic scraping rack (7), the automatic scraping rack (7) is horizontally slidably connected with the drying shell (4), the outer side face of the drying shell (4) is further provided with an adjusting screw (9) for driving the automatic scraping rack (7) to move, the drying shell (4) is further fixedly provided with a driving motor (90) for driving the adjusting screw (9) to rotate, the automatic scraping rack (7) is further slidably provided with a cover (8) for shielding the side face of the drying shell (4), the drying shell (4) comprises a three-edge frame (41) and a metal plate (42), the metal plate (42) is arranged at the middle part of the three-edge frame (41), and the metal plate (42) is fixedly connected with the three-edge frame (41), the lower end face of the metal plate (42) is further provided with an electric heating pipe (421), and the electric heating pipe (421) is fixedly connected with the metal plate (42), the bracket (5) comprises a frame rod (51) and a bent frame (52), the bent frame (52) is symmetrically arranged at the head of the frame rod (51), and the bent frame (52) is integrally formed with the frame rod (51), the bent frame (52) is further provided with an auxiliary rod (521) for mounting the electric cylinder (50), and the auxiliary rod (521) is fixedly connected with the bent frame (52) perpendicularly, the distribution rack (6) comprises a receiving shell (61), a dispersion shell (62) and a guide plate (63), the receiving shell (61) is fixedly arranged at the head of the dispersion shell (62), the guide plate (63) is arranged in the dispersion shell (62) in pairs, and the guide plate (63) is integrally formed with the dispersion shell (62), the outer side face of the receiving shell (61) is provided with a rotating frame (611) rotatably matched with the bent frame (52), the rotating frame (611) is fixedly connected with the receiving shell (61), and the rotating frame (611) is further fixedly provided with a matching plate (612) connected with the output end of the electric cylinder (50).

2. A sludge dewatering system according to claim 1, wherein, The automatic scraping rack (7) comprises a main frame (71), a side frame (72) and a multi-head scraping plate (73), the side frame (72) is fixedly arranged at one side of the main frame (71), and the multi-head scraping plate (73) is arranged at the lower end face of the main frame (71) and is longitudinally slidably connected with the main frame (71).

3. A sludge dewatering system according to claim 2, wherein, The main frame (71) comprises a plate body (711) and side rods (712), the side rods (712) are symmetrically installed on the side of the plate body (711), and the side rods (712) are vertically and fixedly connected with the plate body (711), the upper end surface of the side rod (712) is provided with a limiting groove (713), the side frame (72) comprises a top plate (721), a side plate (722) and a connecting screw sleeve (723), the side plate (722) is vertically fixed on the outer side of the top plate (721), and the connecting screw sleeve (723) is fixedly installed on the lower end surface of the side plate (722).

4. A sludge dewatering system according to claim 3, wherein, The upper end surface of the multi-head scraper (73) is provided with a guide rod (731), the guide rod (731) is vertically and fixedly connected with the multi-head scraper (73), a stretching spring (732) is sleeved on the guide rod (731), the head of the guide rod (731) is fixedly installed with a top cover (733), the head of the stretching spring (732) is fixedly connected with the top cover (733), and the lower end of the stretching spring (732) is fixedly connected with the upper end surface of the plate body (711).

5. A sludge dewatering system according to claim 4, wherein, The cover (8) comprises an outer plate (81) and an insertion block (82), the insertion block (82) is fixedly installed on the inner side of the outer plate (81), the upper end surface of the insertion block (82) is symmetrically provided with a right-angle plate (821) matched with the side rod (712), the inner side of the right-angle plate (821) is provided with a limiting strip (822) matched with the limiting groove (713), and the limiting strip (822) is integrally formed with the right-angle plate (821).

6. A sludge dewatering system according to any one of claims 1-5, characterized in that, The upper end surface of the processing box (1) is provided with a filler shell (11), and the side, away from the air drying assembly (2), of the processing box (1) is provided with an air outlet pipe (12), and the filler shell (11) and the air outlet pipe (12) are fixedly connected with the processing box (1).

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