Sludge heat drying mechanism

Abstract

The invention relates to the technical field of sludge drying, in particular to a sludge heat drying mechanism which comprises a main body, a scraper mechanism is rotatably connected in the main body, a driving motor is arranged at one end of the main body, a tail pipe is arranged at the other end of the main body, and a limiting groove is formed in the position, close to the main body, in the tail pipe. The scraper mechanism comprises a rotating rod rotationally installed in the main body, one end of the rotating rod is slidably connected with a transmission shaft of the driving motor, a connecting opening is formed in the outer surface of the circumference of the rotating rod, a sliding hole is formed in the rotating rod, the connecting opening communicates with the sliding hole, and a sliding rod is slidably connected into the sliding hole. Sludge is uniformly coated on a digging surface through the turning plate to form a thin layer, the contact surface of the sludge and a heating medium is remarkably increased, continuous drying and forward movement of the sludge are realized through cooperation of the telescopic rod and continuous rotation of the turning plate and pushing of the shovel plate, and the shovel plate is used for removing dirt and pushing, so that continuous and efficient treatment is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of sludge drying, and in particular to a sludge thermal drying mechanism. Background Art

[0002] In the complex and important environmental protection field of sludge treatment, sludge drying is not only a key link to improve the efficiency of subsequent treatment processes, but also an indispensable step to achieve sludge reduction, stabilization and even resource utilization. With the acceleration of urbanization and the increase of industrial activities, the amount of sludge generated has increased sharply. How to efficiently and economically treat these sludges and reduce their negative impact on the environment has become a problem that needs to be solved urgently worldwide.

[0003] Traditional sludge drying methods, such as natural air drying and hot air blowing, can achieve sludge drying to a certain extent, but they generally have disadvantages such as high energy consumption, low efficiency, and long cycle. More importantly, these methods often cannot avoid the sludge adhering to the inner wall of the equipment during the drying process, which not only increases the difficulty and cost of equipment cleaning, but also may lead to uneven drying effect and affect the final quality of the sludge.

[0004] In order to overcome the limitations of traditional methods, thin-layer drying technology came into being and developed rapidly. This technology uses a specially designed equipment structure to evenly heat the sludge in an extremely thin layer, greatly improving the heat conduction efficiency and water evaporation rate, thereby significantly shortening the drying time and reducing energy consumption. At the same time, the thin layer state also helps to reduce the mutual adhesion between sludge and prevent the occurrence of adhesion.

[0005] However, although thin-layer drying technology has shown great potential in sludge treatment, existing thin-layer drying equipment still faces many challenges in practical applications. First, the complex composition and physical properties of sludge make it easy to form an adhesion layer on the inner wall of the cylinder during the drying process, which not only affects the drying efficiency, but may also cause corrosion and blockage to the equipment. Secondly, due to the difficulty in controlling the thickness and heating uniformity of the sludge layer, existing equipment often finds it difficult to achieve the ideal drying effect and there is a problem of uneven drying. Finally, the complex structure and precision components of the equipment also increase the difficulty and cost of maintenance, and place higher requirements on the skill level of the operator.

[0006] Therefore, in view of the problems and challenges of existing thin-layer drying equipment, it is particularly important to develop a more efficient, stable and easy-to-maintain sludge thermal drying mechanism. Through technological innovation and optimized design, the efficiency and quality of sludge drying can be improved, energy consumption and costs can be reduced, and the sustainable development of the sludge treatment industry can be promoted. Summary of the invention

[0007] The present invention provides a sludge thermal drying mechanism to solve the problem mentioned in the above background technology that sludge is prone to form an adhesion layer on the inner wall of the equipment (such as the inner wall of the cylinder) during the drying process, which not only increases the difficulty and cost of equipment cleaning, but also may affect the drying effect and cause the sludge quality to deteriorate.

[0008] To solve the above technical problems, a technical solution adopted by the present invention is: to provide a sludge thermal drying mechanism, including a main body, a scraper mechanism is rotatably connected inside the main body, one end of the main body is provided with a driving motor, and the other end of the main body is provided with a tail pipe, a limit groove is provided in the tail pipe near the main body, and the scraper mechanism includes a rotating rod rotatably installed inside the main body, one end of the rotating rod is slidably connected with a transmission shaft of the driving motor, a connecting port is provided on the circumferential outer surface of the rotating rod, a sliding hole is provided inside the rotating rod, the connecting port is communicated with the sliding hole, a sliding rod is slidably connected in the sliding hole, an extrusion groove is provided on the circumferential outer surface of the sliding rod at a position corresponding to the connecting port, a flap is slidably connected inside the connecting port, a sliding block is provided at the bottom of the flap, the sliding block is clamped in the extrusion groove, a digging surface is provided on one side of the flap, a shovel plate is provided on the top of the flap, and a cutting surface is provided on one side of the shovel plate.

[0009] The present invention is further configured such that an interlayer is provided inside the main body wall, a heat exchange port connected to the interlayer is provided on the outer wall of the main body for injecting heat medium to achieve heat exchange, and a drain port connected to the interlayer is provided at the bottom of the main body for discharging condensate inside the interlayer.

[0010] The present invention is further configured such that a feed port is provided at the top of one end of the main body close to the tail pipe, a discharge port is provided at the bottom of the main body close to the drive motor, and an exhaust port is provided at the top of the main body close to the drive motor for connecting to an external fan to extract water vapor in the sludge.

[0011] The present invention is further configured such that the flap is located at one end outside the connection port at a normal state at a distance of 5 to 10 mm from the inner wall of the main body, and a groove is formed between the inclined surface of the excavation surface and the inner wall of the main body to drive the wet sludge to be coated on the inner wall of the main body.

[0012] The present invention is further configured such that the cross section of the shovel plate is kept infinitely close to the inner wall of the main body in a normal state, so as to push the sludge forward during the cleaning process.

[0013] The present invention is further configured as follows: a limiting ring is provided on the circumferential outer surface of one end of the rotating rod near the rotating rod, a connecting head is rotatably connected inside the one end of the rotating rod near the rotating rod, a limiting slot is provided on the circumferential outer surface of the rotating rod near the limiting ring, a sealing plate is rotatably connected inside the limiting slot, the sealing plate is slidably connected to the inner wall of the main body, a connecting block is rotatably connected to the outer wall of the limiting ring, one end of the sealing plate is fixedly connected to the connecting block, the end of the sealing plate is slidably connected to the inner wall of the limiting slot, a telescopic rod 1 is provided inside the connecting block, and the output end of the telescopic rod 1 is fixedly connected to the connecting head, and a telescopic rod 2 is provided inside the tail pipe, and the output end of the telescopic rod 2 is fixedly connected to the connecting block.

[0014] The present invention is further configured such that a docking hole is provided at one end of the rotating rod close to the driving motor, a transmission shaft is provided at the output end of the driving motor, and one end of the transmission shaft extends into the docking hole and is slidably connected.

[0015] The present invention is further configured as follows:

[0016] Beneficial effects of a sludge thermal drying mechanism of the present invention:

[0017] 1. Use the digging surface of the flap to evenly spread the sludge on the inner wall of the main body to form an extremely thin sludge layer, which greatly increases the contact area between the sludge and the heat medium, improves the heat conduction efficiency and the water evaporation rate, thereby achieving rapid drying of the sludge, shortening the drying cycle, and reducing energy consumption.

[0018] 2. After the flap completes a circle of coating, the sliding rod and the rotating rod are driven to move through the coordinated action of telescopic rods 1 and 2, so that the flap and the shovel on it temporarily leave the inner wall of the main body, and then reset and close to the inner wall for cleaning. In this process, the cross section of the shovel effectively removes the sludge adhering to the inner wall, preventing the accumulation and adhesion of sludge, and keeping the equipment clean and running efficiently.

[0019] 3. Through the continuous rotation of the flap and the pushing action of the shovel board, the sludge is continuously dried and moved forward inside the main body. The shovel board not only removes the sludge, but also pushes it to the next coating position, providing space for new sludge coating, thus achieving continuity and high efficiency of sludge treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0021] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] Figure 1 It is a three-dimensional structural diagram of a sludge thermal drying mechanism of the present invention;

[0023] Figure 2 An exploded diagram of a sludge thermal drying mechanism of the present invention;

[0024] Figure 3 It is a cross-sectional view of a sludge thermal drying mechanism of the present invention;

[0025] Figure 4 An exploded view of a scraper mechanism of a sludge thermal drying mechanism of the present invention;

[0026] Figure 5 The present invention is a cross-sectional view of a scraper mechanism of a sludge thermal drying mechanism.

[0027] The markings in the figure are:

[0028] 1. Main body; 11. Interlayer; 111. Heat exchange port; 112. Drain port;

[0029] 12. Scraper mechanism; 121. Rotating rod; 1211. Docking hole; 1212. Sliding hole; 1213. Connecting port; 1214. Limiting slot; 1215. Limiting ring; 122. Sliding rod; 1221. Extrusion slot; 123. Flip plate; 1231. Digging surface; 1232. Sliding block; 1233. Shovel plate; 1234. Cutting surface; 124. Sealing plate; 125. Connecting block; 126. Connecting head; 127. Telescopic rod 1; 128. Telescopic rod 2;

[0030] 13. Tail pipe; 131. Limiting groove; 14. Feed inlet; 15. Exhaust outlet; 16. Discharge outlet; 17. Support seat; 18. Drive motor; 181. Transmission shaft. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other; the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left" and "right" etc. indicate directions or positional relationships based on directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the positions or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limitations of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or a transmission connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements.

[0033] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 5A sludge thermal drying mechanism comprises a main body 1, a scraper mechanism 12 is rotatably connected inside the main body 1, a driving motor 18 is arranged at one end of the main body 1, a tail pipe 13 is arranged at the other end of the main body 1, a limiting groove 131 is arranged inside the tail pipe 13 near the main body 1, the scraper mechanism 12 comprises a rotating rod 121 rotatably installed inside the main body 1, one end of the rotating rod 121 is slidably connected to a transmission shaft 181 of the driving motor 18, a connecting port 1213 is arranged on the circumferential outer surface of the rotating rod 121, a sliding hole 1212 is arranged inside the rotating rod 121, the connecting port 1213 is communicated with the sliding hole 1212, a sliding rod 122 is slidably connected in the sliding hole 1212, and an extrusion hole 1213 is arranged on the circumferential outer surface of the sliding rod 122 at a position corresponding to the connecting port 1213 A pressing groove 1221 and a flap 123 are slidably connected inside the connecting port 1213. A slider 1232 is provided at the bottom of the flap 123. The slider 1232 is clamped in the extrusion groove 1221. A digging surface 1231 is provided on one side of the flap 123. A shovel plate 1233 is provided on the top of the flap 123. A cutting surface 1234 is provided on one side of the shovel plate 1233. The end of the flap 123 located outside the connecting port 1213 is 5 to 10 mm away from the inner wall of the main body 1 in a normal state. A groove is formed between the inclined surface of the digging surface 1231 and the inner wall of the main body 1, which is used to drive the wet sludge to be coated on the inner wall of the main body 1. The cutting surface 1234 of the shovel plate 1233 remains infinitely close to the inner wall of the main body 1 in a normal state, so as to push the sludge forward during the cleaning process.

[0034] By adopting the above technical solution, sludge is input into the main body 1 through the feed port 14, and the driving motor 18 drives the transmission shaft 181 to rotate the rotating rod 121, driving the sliding rod 122 and the flap 123 to rotate synchronously. The flap 123 uses the inclined surface of the digging surface 1231 to evenly apply the sludge to the inner wall of the main body 1 to form a thin layer, realizing indirect heat exchange between the sludge and the heat medium in the interlayer 11 to dry the sludge. After completing a circle of coating, the feeding is suspended. The telescopic rod 127 pushes the sliding rod 122, and the flap 123 moves up and down through the extrusion groove 1221. At the same time, the telescopic rod 2 128 pulls the rotating rod 121, driving the flap 123 and the shovel plate 1233 away from the inner wall, cleaning and pushing the sludge to the next coating area. Afterwards, the telescopic rod 127 and the telescopic rod 2 128 move in the opposite direction to reset the flap 123 and continue the feeding and coating process. This process is repeated in a cycle to achieve segmented thin-layer drying treatment, and finally the dried sludge is discharged through the discharge port 16.

[0035] An interlayer 11 is arranged inside the wall of the main body 1, a heat exchange port 111 connected to the interlayer 11 is arranged on the outer wall of the main body 1, and is used to inject heat medium to realize heat exchange; a drain port 112 connected to the interlayer 11 is arranged at the bottom of the main body 1, and is used to discharge the condensate inside the interlayer 11; a feed port 14 is arranged at the top of one end of the main body 1 close to the tail pipe 13, a discharge port 16 is arranged at the bottom of the main body 1 close to the driving motor 18, and an exhaust port 15 is arranged at the top of the main body 1 close to the driving motor 18 for connecting an external fan to extract water vapor in the sludge.

[0036] By adopting the above technical solution, the exhaust port 15 is used to connect to an external fan, and the water vapor evaporated from the sludge is extracted from the main body 1 through the exhaust port 15 by the fan. An interlayer 11 is arranged inside the wall of the main body 1, and a heat exchange port 111 connected to the interlayer 11 is arranged on the outer wall of the main body 1. A heat medium is injected into the interlayer 11 through the heat exchange port 111 to realize heat exchange between the wet sludge and the heat medium. A drain port 112 is arranged at the bottom of the main body 1, and the drain port 112 is connected to the interlayer 11 of the main body 1, and is used to discharge the condensate inside the interlayer 11.

[0037] A limiting ring 1215 is provided on the outer circumference surface of one end of the rotating rod 121 near the rotating rod 121, and a connector 126 is rotatably connected inside the end of the rotating rod 121 near the rotating rod 121. A limiting groove 1214 is provided on the outer circumference surface of the rotating rod 121 near the limiting ring 1215. A sealing plate 124 is rotatably connected inside the limiting groove 1214. The sealing plate 124 is slidably connected to the inner wall of the main body 1. A connecting block 125 is rotatably connected to the outer wall of the limiting ring 1215. One end of the sealing plate 124 is fixedly connected to the connecting block 125. The end of the sealing plate 124 is slidably connected to the inner wall of the limiting groove 131, a telescopic rod 127 is arranged inside the connecting block 125, and the output end of the telescopic rod 127 is fixedly connected to the connecting head 126, a telescopic rod 128 is arranged inside the tail pipe 13, and the output end of the telescopic rod 128 is fixedly connected to the connecting block 125, a docking hole 1211 is opened at one end of the rotating rod 121 close to the driving motor 18, and a transmission shaft 181 is arranged at the output end of the driving motor 18, and one end of the transmission shaft 181 extends to the inside of the docking hole 1211 and is slidably connected.

[0038] By adopting the above technical solution, the sealing plate 124 is slidably connected to the inner wall of the main body 1, and is used to prevent sludge and internal gas leakage while supporting the rotating rod 121. The telescopic rod 127 and the telescopic rod 2 128 cooperate to drive the sliding rod 122 and the rotating rod 121, so that the flap 123 and the shovel plate 1233 temporarily leave the inner wall and then reset. During this period, the sludge on the inner wall is removed through the cut surface 1234 of the shovel plate 1233 to prevent adhesion, thereby ensuring continuous and efficient operation of the equipment.

[0039] When the present invention is in use, the exhaust port 15 is used to connect to an external fan, and the water vapor evaporated from the sludge is extracted from the main body 1 through the exhaust port 15 by the fan. An interlayer 11 is arranged inside the wall of the main body 1, and a heat exchange port 111 connected to the interlayer 11 is arranged on the outer wall of the main body 1. Heat medium is injected into the interlayer 11 through the heat exchange port 111 to realize heat exchange between the wet sludge and the heat medium. A drain port 112 is arranged at the bottom of the main body 1, and the drain port 112 is connected to the interlayer 11 of the main body 1, and is used to discharge the condensate inside the interlayer 11.

[0040] A scraper mechanism 12 is rotatably connected inside the main body 1, a driving motor 18 is provided at one end of the main body 1, a tail pipe 13 is provided at the other end of the main body 1, a limiting groove 131 is provided inside the tail pipe 13 near the main body 1, a feed port 14 is provided at the top of the main body 1 near the tail pipe 13, a discharge port 16 is provided at the bottom of the main body 1 near the driving motor 18, and a support seat 17 is provided at the bottom of the main body 1.

[0041] The scraper mechanism 12 includes a rotating rod 121 rotatably mounted inside the main body 1, a docking hole 1211 is provided at one end of the rotating rod 121 close to the driving motor 18, a transmission shaft 181 is fixedly connected to the output end of the driving motor 18, the transmission shaft 181 extends into the docking hole 1211, the transmission shaft 181 is slidably connected to the inner wall of the docking hole 1211, the inner wall of the docking hole 1211 is non-circular, the outer wall of the transmission shaft 181 fits the inner wall of the docking hole 1211, a sliding hole 1212 is provided inside the rotating rod 121, a plurality of connecting ports 1213 are evenly provided on the circumferential outer surface of the rotating rod 121, the connecting ports 1213 are connected to the sliding hole 1212, a sliding rod 122 is slidably connected to the inside of the sliding hole 1212, and the circumferential outer surface of the sliding rod 122 corresponds to the connecting port An extrusion groove 1221 is provided at the position of the interface 1213, and a flap 123 is slidably connected to the inside of the connection port 1213. A slider 1232 is provided at the bottom of the flap 123, and the slider 1232 is clamped in the extrusion groove 1221 and slidably connected to the inner wall of the extrusion groove 1221. The end of the flap 123 located outside the connection port 1213 is 5 to 10 mm away from the inner wall of the main body 1 in a normal state, and an inclined digging surface 1231 is provided on one side of the flap 123 near the inner wall of the main body 1, and a shovel plate 1233 is provided on the top of the flap 123 near the drive motor 18, and a cut surface 1234 is provided on the side of the shovel plate 1233 near the drive motor 18. In a normal state, the cut surface 1234 remains infinitely close to the inner wall of the main body 1.

[0042] A limiting ring 1215 is provided on the circumferential outer surface of one end of the rotating rod 121 close to the tail pipe 13, and a connecting head 126 is rotatably connected inside the end of the rotating rod 121 close to the tail pipe 13. A limiting groove 1214 is provided on the circumferential outer surface of the rotating rod 121 close to the limiting ring 1215. A sealing plate 124 is rotatably connected inside the limiting groove 1214. The sealing plate 124 is slidably connected to the inner wall of the main body 1. A connecting block 125 is rotatably connected to the outer wall of the limiting ring 1215. One end of the sealing plate 124 is fixedly connected to the connecting block 125. The end of the sealing plate 124 is slidably connected to the inner wall of the limiting groove 131. A telescopic rod 127 is provided inside the connecting block 125. The output end of the telescopic rod 127 is fixedly connected to the connecting head 126. A telescopic rod 2 128 is provided inside the tail pipe 13. The output end of the telescopic rod 2 128 is fixedly connected to the connecting block 125.

[0043] When in use, sludge is transported to the inside of the main body 1 through the feed port 14, and then the driving motor 18 drives the rotating rod 121 to rotate through the transmission shaft 181. The rotation of the rotating rod 121 will drive the sliding rod 122 and the flap 123 to rotate. The rotation of the flap 123 will drive the wet sludge through the inclined surface of the digging surface 1231, so that it will be coated on the inner wall of the clamping main body 1. The wet sludge will evenly form a thin layer on the inner wall of the main body 1. A groove is formed between the inclined surface of the digging surface 1231 and the inner wall of the main body 1, so that more wet sludge can be driven. In this process, the wet sludge and the heat medium in the interlayer 11 realize indirect heat exchange, thereby achieving the purpose of drying the wet sludge.

[0044] Whenever the flap 123 rotates one circle to coat the wet sludge in one circle, the feed port 14 stops feeding, and the telescopic rod 127 pushes the slide bar 122 through the output end, and pushes the slide bar 122 to make the extrusion groove 1221 squeeze the slider 1232 at the bottom of the flap 123. The flap 123 is restricted by the connection port 1213 and can only move up and down. When it is squeezed by the inclined surface of the extrusion groove 1221, it moves toward the inside of the slide bar 122, so that the flap 123 and the shovel plate 1233 leave the inner wall of the main body 1 for a distance. At the same time, the telescopic rod 128 pulls the rotating rod 121 through the connecting block 125 and the sealing plate 124, and pulls the rotating rod 121 to move a distance equivalent to the total length of the flap 123 and the shovel plate 1233. Then the telescopic rod 127 pulls the slide bar 122 to drive the flap 123 through the inclined surface of the extrusion groove 1221. 23 and its components move outward so that they return to the position at the same distance from the inner wall of the main body 1. Then the telescopic rod 128 pushes the rotating rod 121 back to its original position through the connecting block 125 and the sealing plate 124. This pushing process will clean the sludge on the inside of the main body 1 through the cut surface 1234 of the shovel plate 1233. In the process of cleaning the sludge, the sludge will be pushed forward to the next flap 123 for coating. When the rotating rod 121 returns to its original position, the feed port 14 continues to feed, and then the flap 123 continues to rotate through the inclined surface of the digging surface 1231 to drive the wet sludge so that it will be coated on the inner wall of the clamping main body 1. The wet sludge will evenly form a thin layer on the inner wall of the main body 1. Then continue the previous steps to dry the wet sludge through the segmented thin layer drying process and finally discharge it through the discharge port 16.

[0045] The sludge is evenly coated on the inner wall of the main body 1 by using the digging surface 1231 of the flap 123 to form a thin layer, which significantly expands the contact area between the sludge and the heat medium, improves the heat conduction efficiency and the water evaporation rate, realizes rapid drying of the sludge, shortens the cycle, and reduces energy consumption.

[0046] After the flap 123 rotates, the telescopic rod 127 and the telescopic rod 128 cooperate to drive the slide bar 122 and the rotating rod 121, so that the flap 123 and the shovel plate 1233 temporarily leave the inner wall and then return to their original position. During this period, the sludge on the inner wall is removed through the cut surface 1234 of the shovel plate 1233 to prevent adhesion, thereby ensuring continuous and efficient operation of the equipment.

[0047] The flap 123 rotates continuously, and the shovel plate 1233 pushes the sludge to dry and move forward, while making room for the coating of new sludge, ensuring continuous and efficient sludge treatment.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sludge thermal drying mechanism, comprising a main body (1), characterized in that: A scraper mechanism (12) is rotatably connected inside the main body (1), a driving motor (18) is provided at one end of the main body (1), a tail pipe (13) is provided at the other end of the main body (1), and a limiting groove (131) is provided inside the tail pipe (13) at a position close to the main body (1); The scraper mechanism (12) comprises a rotating rod (121) rotatably mounted inside the main body (1), one end of the rotating rod (121) being slidably connected to a transmission shaft (181) of a driving motor (18), a connecting port (1213) being provided on a circumferential outer surface of the rotating rod (121), a sliding hole (1212) being provided inside the rotating rod (121), the connecting port (1213) being communicated with the sliding hole (1212), a sliding rod (122) being slidably connected inside the sliding hole (1212), and an extrusion groove (1221) being provided on a circumferential outer surface of the sliding rod (122) at a position corresponding to the connecting port (1213); A flap (123) is slidably connected inside the connection port (1213), a slider (1232) is provided at the bottom of the flap (123), the slider (1232) is clamped in the extrusion groove (1221), a digging surface (1231) is provided on one side of the flap (123), a shovel plate (1233) is provided on the top of the flap (123), and a cutting surface (1234) is provided on one side of the shovel plate (1233).

2. A sludge thermal drying mechanism according to claim 1, characterized in that: An interlayer (11) is arranged inside the wall of the main body (1), a heat exchange port (111) is arranged on the outer wall of the main body (1) and is connected to the interlayer (11) for injecting heat medium to achieve heat exchange, and a drainage port (112) is arranged at the bottom of the main body (1) and is connected to the interlayer (11) for draining condensate inside the interlayer (11).

3. The sludge thermal drying mechanism according to claim 1, characterized in that: A feed port (14) is provided at the top of one end of the main body (1) close to the tail pipe (13), a discharge port (16) is provided at the bottom of the main body (1) close to the drive motor (18), and an exhaust port (15) is provided at the top of the main body (1) close to the drive motor (18) for connecting to an external fan to extract water vapor in the sludge.

4. The sludge thermal drying mechanism according to claim 1, characterized in that: The end of the flap (123) located outside the connection port (1213) is 5 to 10 mm away from the inner wall of the main body (1) in a normal state, and a groove is formed between the inclined surface of the excavation surface (1231) and the inner wall of the main body (1) for driving the wet sludge to be coated on the inner wall of the main body (1).

5. The sludge thermal drying mechanism according to claim 1, characterized in that: The cut surface (1234) of the shovel plate (1233) is kept in close proximity to the inner wall of the main body (1) in a normal state, and is used to push the sludge forward during the cleaning process.

6. The sludge thermal drying mechanism according to claim 1, characterized in that: A limiting ring (1215) is provided on the outer circumferential surface of one end of the rotating rod (121) close to the rotating rod (121); a connector (126) is rotatably connected to the inner part of the end of the rotating rod (121) close to the rotating rod (121); a limiting groove (1214) is provided on the outer circumferential surface of the rotating rod (121) close to the limiting ring (1215); a sealing plate (124) is rotatably connected to the inner part of the limiting groove (1214); the sealing plate (124) is slidably connected to the inner wall of the main body (1); the limiting ring (1214) is rotatably connected to the inner wall of the main body (1); and the limiting ring (1214) is rotatably connected to the inner wall of the main body (1). 215) is rotatably connected to the outer wall of the connecting block (125), one end of the sealing plate (124) is fixedly connected to the connecting block (125), the end of the sealing plate (124) is slidably connected to the inner wall of the limiting groove (131), a telescopic rod 1 (127) is arranged inside the connecting block (125), the output end of the telescopic rod 1 (127) is fixedly connected to the connecting head (126), and a telescopic rod 2 (128) is arranged inside the tail pipe (13), the output end of the telescopic rod 2 (128) is fixedly connected to the connecting block (125).

7. The sludge thermal drying mechanism according to claim 1, characterized in that: A docking hole (1211) is provided at one end of the rotating rod (121) close to the driving motor (18); a transmission shaft (181) is provided at the output end of the driving motor (18); one end of the transmission shaft (181) extends into the docking hole (1211) and is slidably connected thereto.

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