Ceramic sintering flue gas treatment system

Abstract

The invention relates to the technical field of heat recovery, and provides a ceramic sintering flue gas treatment system which comprises a desulfurization tower and a heat recovery tower. Wherein the heat recovery tower comprises a tower body assembly and a heat exchange box suspended in the tower body assembly, and the space between the tower body assembly and the heat exchange box is divided by a rectangular frame plate to form an isolation chamber; a plurality of insertion openings are formed in the side face, close to the isolation chamber, of the heat exchange box, a first heat exchange unit is inserted into each insertion opening in a matched mode, and a plurality of sets of second heat exchange units fixed to the tower body assembly are arranged above the heat exchange box; an elastic lifting mechanism is arranged in the heat exchange box, and when the first heat exchange unit is inserted into the insertion opening, the elastic lifting mechanism forces the first heat exchange unit to be in butt joint with the second heat exchange unit. And a sealing seat is laterally and slidably mounted on the inner wall of the heat exchange box and is used for normally covering the plugging port and the limiting structure when the first heat exchange unit is separated from the plugging port. On the basis, the first heat exchange unit can be cleaned under the non-stop condition, so that the good waste heat recovery efficiency is ensured.

Description

Technical Field

[0001] This application relates to the field of heat recovery technology, and in particular to a ceramic sintering flue gas treatment system. Background Technology

[0002] Ceramic sintering is the process of densifying the green body at high temperature. Through the migration of substances between particles and the elimination of pores, the green body shrinks and gradually becomes a solid sintered body with a certain geometric shape. The ceramic sintering process plays a decisive role in the performance of ceramic products.

[0003] Ceramic sintering is typically carried out in a sintering furnace. Because the sintering process requires a large amount of heat, the resulting flue gas also contains a significant amount of heat energy. Current technology connects the flue gas duct of the sintering furnace to a desulfurization tower for desulfurization, and then often adds a heat recovery tower between the desulfurization tower and the exhaust outlet. The heat recovery tower can recover and reuse the waste heat from sintering, achieving energy conservation and emission reduction. Existing heat recovery towers can be classified into two types according to the type of medium: flue gas-liquid and flue gas-air. When the flue gas enters the heat recovery tower, it comes into contact with the internal heat exchange fins. The heat exchange fins absorb heat and transfer it to a cooler medium on the other side, thus recovering and utilizing the heat.

[0004] However, even after the flue gas from ceramic sintering is desulfurized in the desulfurization tower, particulate matter inevitably remains. When the flue gas comes into contact with the heat exchange fins, a water film forms due to the temperature difference, and the particulate matter easily adheres to this film. This reduces the contact area and time between the flue gas and the heat exchange fins, resulting in a significant decrease in the heat absorbed by the heat recovery tower. Therefore, frequent shutdowns and cleaning of the heat recovery tower are necessary. Considering the impact of shutdowns on the sintering operation of the upstream sintering furnace, the heat recovery tower is only shut down for cleaning at the end of mass production. Consequently, during the period when the waste heat recovery efficiency is observed to be low, the heat recovery tower continues to operate at low efficiency, resulting in substantial heat loss, which requires improvement. Summary of the Invention

[0005] Based on this, this application provides a ceramic sintering flue gas treatment system that can perform partial cleaning of the heat recovery tower without shutting down the system, so as to ensure good waste heat recovery efficiency.

[0006] The ceramic sintering flue gas treatment system provided in this application adopts the following technical solution: A ceramic sintering flue gas treatment system includes a desulfurization tower and a heat recovery tower. The heat recovery tower includes a tower assembly and a heat exchange box suspended inside the tower assembly. The top and bottom of the tower assembly are respectively provided with an air inlet and an air outlet. There is a heat exchange cavity between the tower assembly and the heat exchange box for air to flow through. The two opposite sides of the heat exchange box are respectively provided with a flue gas inlet and a flue gas outlet. The flue gas inlet and the flue gas outlet extend to the outside of the tower assembly, and the flue gas inlet is connected to the outlet end of the desulfurization tower. A rectangular frame plate is fixed between the tower assembly and the heat exchange box. The heat exchange chamber is divided by the rectangular frame plate to form an isolation chamber. A cleaning port connected to the isolation chamber is provided on the side of the tower assembly. An outer cover plate is detachably fixed on the side of the tower assembly and is matched to cover the cleaning port. The heat exchange box has multiple insertion ports on the side near the isolation chamber, and each insertion port is matched with a first heat exchange unit; the top of the heat exchange box has multiple limiting structures, each limiting structure is set opposite to each group of first heat exchange units; the top of the heat exchange box has multiple groups of second heat exchange units fixed to the tower assembly, each second heat exchange unit is opposite to each limiting structure. The heat exchange box is equipped with an elastic lifting mechanism. When the first heat exchange unit is inserted into the insertion port, the elastic lifting mechanism forces the first heat exchange unit to pass through the limiting structure and connect with the second heat exchange unit directly above it. A sealing seat is slidably installed on the inner wall of the heat exchange box. When the first heat exchange unit is disengaged from the insertion port, the sealing seat normally covers the insertion port and the limiting structure.

[0007] By adopting the above technical solution, the outlet of the desulfurization tower is connected to the flue gas inlet of the heat exchange box. The flue gas generated during the sintering operation enters the desulfurization tower for desulfurization treatment before entering the heat exchange box. The air duct connecting to the outside is used to connect to the air inlet at the bottom of the tower assembly. As the pure air flows inside the heat exchange chamber, it comes into contact with the outer wall of the heat exchange box, allowing the heat in the flue gas to be transferred to the air through the heat exchange box, achieving the first stage of heat exchange. At the same time, since the first heat exchange unit can be connected to the second heat exchange unit directly above it when installed in the plug-in interface, the heat in the flue gas is transferred to the second heat exchange unit through the first heat exchange unit, and then to the air inside the tower assembly through the second heat exchange unit, achieving the second stage of heat exchange. This gives the heat recovery system tower good waste heat recovery efficiency.

[0008] When the heat recovery tower has been used for a period of time, and particulate matter in the flue gas adheres to the surface of the first heat exchange unit, causing a decrease in waste heat recovery efficiency, the outer cover plate can be removed to apply force to the first heat exchange unit, causing it to move downwards and press against the elastic lifting mechanism. The first heat exchange unit can then smoothly disengage from the limiting structure. The first heat exchange unit can then be easily removed from the insertion port for cleaning. At this time, the insertion port and the limiting structure can be normally blocked by the sealing seat, thus keeping the inside of the heat exchange box sealed. The flue gas can still enter the heat exchange box and transfer heat to the air inside the tower assembly. This allows the first heat exchange unit to be cleaned without shutting down the tower, ensuring that the heat recovery tower maintains good waste heat recovery efficiency and has the effect of energy saving and consumption reduction.

[0009] Optionally, a partition plate is fixed inside the heat exchange box, and a mechanism chamber is formed between the partition plate and the bottom wall of the heat exchange box; the insertion port is connected to the interior of the mechanism chamber, and the partition plate has a communication port that is directly opposite to the insertion port. The elastic lifting mechanism includes a support plate, a connecting column fixed to the bottom of the support plate, and a rigid spring disposed between the support plate and the partition plate. The support plate is vertically and movably inserted into the partition plate through the connecting column. The rigid spring is sleeved on the connecting column, and the rigid spring normally forces the support plate to move away from the partition plate, so as to make the first heat exchange unit match and pass through the limiting structure.

[0010] By adopting the above technical solution, the rigid spring set between the support plate and the partition plate can always generate an elastic force acting on the support plate, causing the support plate to move away from the partition plate; when the first heat exchange unit is inserted into the insertion interface, the first heat exchange unit abuts against the support plate, and under the elastic force of the rigid spring, the first heat exchange unit can move upward and match the insertion into the limiting structure, which not only limits the first heat exchange unit, but also allows the first heat exchange unit to match and block the limiting structure to maintain the sealed state inside the heat exchange box.

[0011] Optionally, the first heat exchange unit includes two heat exchange plates and multiple guide columns that are movably inserted through the two heat exchange plates. Each guide column has a first anti-detachment component at both ends, and the outer diameter of the first anti-detachment component is larger than the outer diameter of the guide column. The bottom of the two heat exchange plates is provided with a rotatable adjustment plate. The adjustment plate and the heat exchange plate are rotated and positioned by a damping structure. The mechanism chamber is provided with an adjustment structure that works with the adjustment plate. When the first heat exchange unit is inserted into the insertion interface, the adjustment structure forces the adjustment plate to rotate and forces the two heat exchange plates to move away from each other. The limiting structure includes two limiting narrow holes arranged side by side. When the two heat exchange plates are moved away from each other to their extreme positions, the two heat exchange plates are respectively positioned directly opposite the two limiting narrow holes.

[0012] By adopting the above technical solution, the guide post inserted between the two heat exchange plates can guide the movement direction of the heat exchange plates, allowing them to move closer or further apart. The first anti-detachment component prevents the heat exchange plates from detaching from the guide post. When the first heat exchange unit is inserted into the insertion interface, the adjusting disc rotates under the action of the adjusting structure, thereby forcing the two heat exchange plates to move away from each other to their extreme positions. This ensures that the two heat exchange plates are directly aligned with the two limiting narrow holes, facilitating the matching insertion of the heat exchange plates with the limiting narrow holes under the action of the elastic lifting mechanism.

[0013] When the first heat exchange unit needs to be removed for cleaning, the operator removes the first heat exchange unit from the plug-in interface. The adjusting disc, driven by the adjusting structure, can bring the two heat exchange plates closer to each other. At this time, a gap can be formed between the heat exchange plates and the inner wall of the plug-in interface. The existence of the gap can reduce the possibility of the heat exchange plates contacting the inner wall of the plug-in interface during disassembly, and improve the situation where particulate matter attached to the heat exchange plates adheres to the inner wall of the plug-in interface. In turn, when the first heat exchange unit is reinstalled into the plug-in interface after cleaning, the possibility of particulate matter re-adhering to the heat exchange plates is reduced.

[0014] Optionally, each heat exchange plate is fixed with a driven rod at the bottom. Two guide holes are provided through the side end face of the adjusting plate. The two driven rods are respectively inserted into the two guide holes, and the outer diameter of the driven rods is matched with the width of the guide holes. Two guide holes are mirrored along the center point of the adjustment disk. Each guide hole includes a straight segment and an arc segment, and the arc segment and the straight segment are connected on one side. The arc axis of the arc segment coincides with the center of the adjustment disk, while the distance from the straight segment to the center point of the adjustment disk gradually decreases from the side of the straight segment closer to the arc segment to the other side. The adjustment structure includes a rack plate fixedly installed inside the mechanism chamber, with a toothed portion on one side of the rack plate; the outer edge of the adjustment disc is provided with an external toothed portion. When the first heat exchange unit is matched and inserted into the insertion interface, the external toothed portion meshes with the toothed portion along the moving direction of the first heat exchange unit.

[0015] By adopting the above technical solution, the adjustment disc can rotate when it contacts the rack plate through the cooperation between the external toothed part and the toothed part. This, in turn, allows the driven rod to move the two heat exchange plates closer to or further apart through the cooperation between the driven rod and the guide hole. It should be noted that before the first heat exchange unit is inserted into the insertion port, the driven rod can be located in the middle of the straight section or at the end of the straight section away from the curved section. When the first heat exchange unit is inserted into the insertion port and the adjustment disc rotates under the action of the adjustment structure, the driven rod gradually moves towards the curved section, causing the two heat exchange plates to gradually move away. When the driven rod enters the curved section, if the adjustment disc is still engaged with the rack plate, the driven rod can continue to move within the curved section, thus reducing the possibility of jamming during the insertion of the first heat exchange unit and facilitating its smooth installation.

[0016] Optionally, the heat exchange plate includes multiple first heat exchange fins and multiple micro heat pipe array elements. The micro heat pipe array elements are arranged vertically, and the first heat exchange fins are arranged in a grid pattern. Each first heat exchange fin and each micro heat pipe array element are arranged alternately.

[0017] By adopting the above technical solution, the arrangement of the first heat exchange fins increases the contact area between the flue gas and the heat exchange plate, so that when the flue gas enters the heat exchange box, the heat can be quickly transferred to the first heat exchange fins, and then transferred from the first heat exchange fins to the micro heat pipe array element. By arranging the micro heat pipe array element vertically, the heat can be quickly transferred upward through the micro heat pipe array element and conducted to the second heat exchange unit connected to the first heat exchange unit, which has a good heat exchange effect and high waste heat recovery efficiency.

[0018] Optionally, the second heat exchange unit includes multiple second heat exchange fins, the number of which is matched with that of the first heat exchange fins; the bottom of the second heat exchange fins is provided with multiple structural grooves, and the top of the first heat exchange fins is provided with multiple structural protrusions. When the first heat exchange unit and the second heat exchange unit are connected to each other, each structural protrusion is respectively engaged in each structural groove.

[0019] By adopting the above technical solution, when the first heat exchange fin and the second heat exchange fin are connected to each other, the contact area between the first heat exchange fin and the second heat exchange fin can be increased by the cooperation of the structural protrusion and the structural groove, thereby improving the heat transfer efficiency between the two, so that the heat on the first heat exchange fin can be smoothly transferred to the second heat exchange fin and the clean air inside the tower assembly.

[0020] Optionally, the damping structure includes a spherical protrusion on the top surface of the adjustment plate and an inner groove on the bottom of the heat exchange plate. There are multiple spherical protrusions, all of which are evenly distributed around the center of the adjustment plate, and each spherical protrusion engages with the inner groove.

[0021] By adopting the above technical solution, the heat exchange plate can maintain its fixed position with the adjustment plate through the cooperation of the ball protrusion and the inner groove when it is not subjected to external force, reducing the possibility of arbitrary rotation of the adjustment plate, and thus reducing the possibility of the two heat exchange plates moving towards each other or away from each other.

[0022] Optionally, the sealing seat includes a first substrate for covering the limiting structure, a second substrate for covering the insertion interface, and a third substrate for covering the communication port, wherein the first substrate, the second substrate, and the third substrate are connected in sequence; a reset spring is provided between the second substrate and the heat exchange box, and the reset spring is used to force the second substrate to normally cover the insertion interface. The bottom of the second substrate is connected to a push plate, which passes through the heat exchange box and extends into the inner side of the isolation chamber; when the first heat exchange unit is disengaged from the plug-in interface, the push plate is normally located in front of the plug-in interface.

[0023] By adopting the above technical solution, when the first heat exchange unit is inserted into the insertion port, the bottom of the first heat exchange unit abuts against the push plate inside the isolation chamber. The push plate forces the sealing seat to move laterally to the outside of the insertion port, allowing the first heat exchange unit to smoothly enter the insertion port. When the first heat exchange unit is contaminated and needs cleaning, by removing the first heat exchange unit from the insertion port and separating it from the push plate, the sealing seat automatically resets under the elastic force of the return spring and covers the limiting structure, insertion port, and connecting port, allowing the heat recovery tower to continue to be used and recover waste heat.

[0024] Optionally, the inner bottom surface of the rectangular frame plate is provided with a rotating shaft, one end of which is connected to an operating mechanism for rotating it; the outer periphery of the rotating shaft is movably fitted with a fitting mechanism, which is linked with the push plate component. The bottom of the first heat exchange unit is provided with a positioning plate that works in conjunction with the insertion mechanism. When the first heat exchange unit is disengaged from the push plate, the insertion mechanism is located on the moving path of the first heat exchange unit. The insertion mechanism is used to work with the positioning plate to position the first heat exchange unit so as to realize the rotation setting of the first heat exchange unit.

[0025] By adopting the above technical solution, when the first heat exchange unit is removed from the insertion interface and completely separated from the push plate, the insertion mechanism can be reset and moved to the moving path of the positioning plate under the drive of the reset spring. At this time, through the cooperation and positioning between the insertion mechanism and the positioning plate, the first heat exchange unit can be fixed on the rotating shaft by hooking. Then, by controlling the rotation of the rotating shaft through the operating mechanism, the first heat exchange unit can automatically flip outward with the rotating shaft, without the need for operators to pick it up or support it. This is beneficial to improve the convenience of cleaning the first heat exchange unit and reduces the possibility of operators accidentally touching the heat absorption position of the first heat exchange unit and being burned, thus reducing safety hazards.

[0026] Optionally, the fitting mechanism includes a sliding seat, a limiting seat, and a telescopic rod. The sliding seat is movably sleeved on the rotating shaft and is circumferentially linked with the rotating shaft. The limiting seat is fixedly connected to the sliding seat, and a limiting area for the positioning plate to enter is formed between the limiting seat and the sliding seat. The telescopic rods are provided in multiple sets, and each telescopic rod is fixed to the side of the sliding seat near the limiting seat; the side of the positioning plate is provided with multiple positioning holes, and the movable end of the telescopic rod can be inserted and positioned in accordance with the positioning holes.

[0027] By adopting the above technical solution, when the first heat exchange unit moves outward and away from the push plate, the sliding seat and the limiting seat move to the moving path of the first heat exchange unit, and at the same time, the movable end of the telescopic rod can be located on the moving path of the positioning plate; as the first heat exchange unit continues to move outward, the positioning plate can abut against the movable end of the telescopic rod and force the telescopic rod to retract inward; when each telescopic rod is aligned with each positioning hole, the movable end of the telescopic rod can automatically enter the corresponding positioning hole, thereby realizing the insertion and positioning between the telescopic rod and the positioning plate.

[0028] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting a sealing seat, when the first heat exchange unit is removed from the insertion port, the limiting structure and the insertion port are normally blocked by the sealing seat, so that the inside of the heat exchange box remains sealed. The flue gas can still enter the heat exchange box and transfer heat to the air inside the tower assembly. This allows the first heat exchange unit to be cleaned without shutting down the tower, so that the heat recovery tower maintains good waste heat recovery efficiency and has the effect of energy saving and consumption reduction. 2. When the first heat exchange unit needs to be removed for cleaning, the adjusting plate, driven by the adjusting structure, brings the two heat exchange plates closer to each other. The heat exchange plates can form a gap with the inner wall of the insertion interface, which can improve the situation of particulate foreign matter adhering to the heat exchange plates and adhering to the inner wall of the insertion interface during disassembly. In this way, when the first heat exchange unit is reinstalled into the insertion interface after cleaning, the possibility of particulate foreign matter re-adhering to the heat exchange plates is reduced. 3. When the first heat exchange unit is inserted into the insertion interface and the driven rod enters the arc segment, if the adjusting plate is still engaged with the rack plate, the driven rod can continue to move within the arc segment, thereby reducing the possibility of jamming during the insertion of the first heat exchange unit and facilitating the smooth installation of the first heat exchange unit. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the heat recovery tower in this embodiment; Figure 2 This is a vertical sectional view of the heat recovery tower in this embodiment, mainly showing the internal structure of the heat recovery tower; Figure 3This is a vertical sectional view of the heat recovery tower and heat exchange box in this embodiment, mainly showing the internal structure of the heat exchange box; Figure 4 This is a schematic diagram of the heat exchange box in this embodiment; Figure 5 This is a schematic diagram of the structure of the first heat exchange unit in this embodiment; Figure 6 yes Figure 5 Enlarged view of point A in the middle; Figure 7 This is a cross-sectional view of the heat exchange box in this embodiment, mainly showing the internal structure of the mechanism chamber; Figure 8 This is a schematic diagram of the adjustment disc in this embodiment; Figure 9 yes Figure 3 Enlarged view of point B in the middle; Figure 10 This is a vertical sectional view of the heat exchange box in this embodiment, mainly showing the structure and installation position of the sealing seat; Figure 11 This is a schematic diagram of the sealing seat in this embodiment.

[0030] Explanation of reference numerals in the attached drawings: 1. Tower assembly; 11. Air inlet; 12. Air outlet; 13. Heat exchange chamber; 14. Cleaning port; 15. Outer cover plate; 16. Second heat exchange unit; 161. Second heat exchange fins; 162. Structural groove; 2. Heat exchange box; 21. Flue gas inlet; 22. Flue gas outlet; 23. Heat exchange fins; 24. Insertion port; 25. Partition plate; 251. Connecting port; 26. Flue gas chamber; 27. Mechanism chamber; 28. Limiting structure; 281. Limiting narrow hole; 29. ​​Clearance groove; 3. Rectangular frame plate; 31. Isolation chamber; 32. Rotating shaft; 33. Insertion mechanism; 331. Sliding seat; 3311. Limiting ring groove; 332. Limiting seat; 333. Telescopic rod; 334. Limiting area; 34. Operating mechanism; 341. Worm gear; 342. Worm wheel; 343. Operating handle; 4. First heat exchange unit; 41. Heat exchange plate; 411. First heat exchange fin; 4111. Structural protrusion; 412. Micro heat pipe array element; 413. Base; 414. Driven rod; 4141. End plate; 415. Elastic pad; 42. Guide post; 421. First anti-detachment component; 43. Adjustment disc; 431. Guide hole; 432. Straight segment; 433. Arc segment; 434. Ball protrusion; 435. External toothed part; 44. Grip; 45. Elastic sealing strip; 46. Positioning plate; 461. Positioning hole; 5. Adjustment structure; 51. Rack plate; 52. Toothed part; 6. Elastic lifting mechanism; 61. Support plate; 62. Connecting column; 63. Hard spring; 7. Sealing seat; 71. First base plate; 72. Second base plate; 721. Push plate; 73. Third base plate; 74. Sliding guide rod; 741. Ring stop seat; 75. Return spring. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 - Appendix Figure 11 This application will be described in further detail.

[0032] This application discloses a ceramic sintering flue gas treatment system.

[0033] Reference Figure 1 A ceramic sintering flue gas treatment system includes a desulfurization tower and a heat recovery tower. The heat recovery tower includes a tower assembly 1 and a heat exchange box 2. The top and bottom of the tower assembly 1 are respectively provided with an air inlet 11 and an air outlet 12. In this embodiment, the air inlet 11 is located at the bottom of the tower assembly 1, and the air outlet 12 is correspondingly located at the top of the tower assembly 1. It is understood that in another feasible embodiment, the air inlet 11 may also be located at the top of the tower assembly 1, and the air outlet 12 correspondingly located at the bottom of the tower assembly 1, not limited to the manner provided in this embodiment. The air inlet 11 is fixedly connected to an air duct communicating with the outside, enabling the introduction of clean external air into the tower assembly 1.

[0034] Reference Figure 2 The heat exchange box 2 is made of alloy material, such as stainless steel, or, considering higher heat exchange efficiency requirements, aluminum alloy or tungsten-copper alloy with higher thermal conductivity. Two opposite sides of the heat exchange box 2 are respectively provided with a flue gas inlet 21 and a flue gas outlet 22, which pass through the tower assembly 1 and extend to the outside of the tower assembly 1. The flue gas inlet 21 is used to connect to the outlet end of the desulfurization tower, allowing the desulfurized flue gas to be introduced into the heat exchange box 2. It should be noted that a heat exchange cavity 13 for air flow can be formed between the tower assembly 1 and the heat exchange box 2. Multiple heat exchange fins 23 are fixed to the sides of the heat exchange box 2, extending to both the inner and outer sides of the heat exchange box 2. The heat exchange fins 23 improve the heat exchange efficiency between the flue gas and the air, achieving the first stage of heat exchange.

[0035] Reference Figure 3 A rectangular frame plate 3 is provided between the tower assembly 1 and the heat exchange box 2. One side of the rectangular frame plate 3 is fixed to the inner side of the tower assembly 1, and the other side of the rectangular frame plate 3 is fixed to the outer side of the heat exchange box 2; at the same time, refer to Figure 2It should be noted that the fixed surfaces of the rectangular frame plate 3 and the heat exchange box 2 can be adjacent to the surfaces where the flue gas inlet 21 and the flue gas outlet 22 are located simultaneously.

[0036] Back Figure 3 The rectangular frame plate 3 is arranged to divide the heat exchange chamber 13 into an isolation chamber 31, and a cleaning port 14 is provided on the side of the tower assembly 1, which is directly opposite the isolation chamber 31; at the same time, refer to Figure 1 The outer side of the tower assembly 1 is detachably fixed with an outer cover plate 15, which can normally cover the cleaning port 14 to maintain the sealing effect inside the heat exchange chamber.

[0037] Reference Figure 4 Multiple insertion ports 24 are provided on the side of the heat exchange box 2 near the isolation chamber 31, and all insertion ports 24 are equidistantly arranged along the width direction of the heat exchange box 2. A horizontally arranged partition plate 25 is fixed inside the heat exchange box 2, located below the flue gas inlet 21 and the flue gas outlet 22. A flue gas chamber 26 is formed between the partition plate 25 and the inner top wall of the heat exchange box 2, and a mechanism chamber 27 is formed between the partition plate 25 and the inner bottom wall of the heat exchange box 2. Each insertion port 24 can communicate with the interior of the mechanism chamber 27. In addition, the partition plate 25 has multiple connecting ports 251, the number of which is equal to the number of insertion ports 24, and each connecting port 251 can be directly opposite each insertion port 24.

[0038] Simultaneously refer to Figure 3 The heat exchange box 2 is also equipped with multiple sets of first heat exchange units 4. The number of first heat exchange units 4 is equal to the number of plug-in interfaces 24. When all the first heat exchange units 4 are installed inside the heat exchange box 2, each set of first heat exchange units 4 can be inserted into each plug-in interface 24 respectively.

[0039] Specifically, refer to Figure 5 The first heat exchange unit 4 includes two heat exchange plates 41 and multiple guide posts 42. Each guide post 42 is movably inserted through the two heat exchange plates 41 to keep the two heat exchange plates 41 in a sliding connection. The guide posts 42 are perpendicular to the two heat exchange plates 41. A first anti-detachment component 421 is fixed at both ends of the guide post 42. The outer diameter of the first anti-detachment component 421 is larger than the outer diameter of the guide post 42 to reduce the possibility of the heat exchange plates 41 detaching from the guide post 42.

[0040] The heat exchange plate 41 includes multiple first heat exchange fins 411 and multiple micro heat pipe array elements 412. The micro heat pipe array is arranged vertically, and the first heat exchange fins 411 are arranged in a grid pattern. The first heat exchange fins 411 and the micro heat pipe array elements 412 are alternately arranged horizontally. Furthermore, a base 413 is fixed to the bottom of each first heat exchange fin 411 and each micro heat pipe array element 412, and a guide post 42 is movably inserted through the base 413. (See also...) Figure 4 It should be noted that when the first heat exchange unit 4 is plugged into the plug interface 24, the base 413 can pass through the connecting port 251, so that the flue gas chamber 26 is kept sealed, reducing the possibility of flue gas leaking into the heat exchange chamber 13.

[0041] Additionally, refer to Figure 5 Each heat exchange plate 41 has a grip 44 fixed on its side. The grip 44 is made of a material with low thermal conductivity, such as wood or ceramic, which makes it easy for operators to insert and remove the first heat exchange unit 4. An elastic sealing strip 45 is also provided between the two heat exchange plates 41. The elastic sealing strip 45 is located on the side edge of the heat exchange plate 41, which can further ensure the sealing effect of the flue gas chamber 26 when the first heat exchange unit 4 is inserted into the insertion interface 24.

[0042] Both heat exchange plates 41 have a rotatable adjusting disc 43 at their bottom; see details. Figure 6 The side end face of the adjusting plate 43 is provided with an axially penetrating guide hole 431. There are two guide holes 431, which are mirror images of each other along the center point of the adjusting plate 43. Each base 413 has a driven rod 414 vertically fixed to its bottom. The two driven rods 414 are respectively inserted through the two guide holes 431, and the outer diameter of the driven rod 414 is equal to the width of the guide hole 431. When the adjusting plate 43 rotates, the driven rod 414 can move within the guide hole 431, thereby causing the two heat exchange plates 41 to move closer to each other or further away from each other.

[0043] Simultaneously refer to Figure 7 The mechanism chamber 27 is equipped with an adjustment structure 5 that works in conjunction with the adjustment plate 43. In this embodiment, the adjustment structure 5 includes a rack plate 51. One side of the rack plate 51 is provided with an integrally formed toothed part 52, and the outer peripheral surface of the adjustment plate 43 is provided with an external toothed part 435. When the first heat exchange unit 4 is inserted into the insertion interface 24, the external toothed part 435 can mesh with the toothed part 52 along the moving direction of the first heat exchange unit 4, thereby driving the adjustment plate 43 to rotate circumferentially around its own central axis.

[0044] Back Figure 6An end plate 4141 is fixed to the end of the driven rod 414 away from the base 413. The outer diameter of the end plate 4141 is larger than that of the driven rod 414, which can reduce the possibility of the adjusting plate 43 disengaging from the driven rod 414. In this embodiment, an elastic pad 415 is matched and installed between the end plate 4141 and the adjusting plate 43. The elastic pad 415 is sleeved on the driven rod 414, and the elastic pad 415 can always generate an elastic force acting on the adjusting plate 43, so that the adjusting plate 43 is normally in contact with the heat exchange plate 41. A damping structure is also provided between the adjusting plate 43 and the heat exchange plate, which can realize the rotational positioning between the adjusting plate 43 and the heat exchange plate 41.

[0045] Specifically, refer to Figure 8 The damping structure includes a spherical protrusion 434 disposed on the top surface of the adjusting plate 43 and an inner groove (not shown in the figure) opened at the bottom of the base 413. There are multiple spherical protrusions 434, and all spherical protrusions 434 are evenly distributed around the center of the adjusting plate 43. Each spherical protrusion 434 can engage with the inner groove. When the adjusting plate 43 rotates, each spherical protrusion 434 is engaged in the inner groove in sequence, which can restrict the arbitrary rotation of the adjusting plate 43 and maintain the distance between the two heat exchange plates 41.

[0046] Back Figure 6 In this embodiment, the guide hole 431 includes a straight segment 432 and an arc segment 433, and the arc segment 433 and the straight segment 432 are connected on one side; wherein, the arc axis of the arc segment 433 coincides with the center of the adjustment disk 43, and the distance between the straight segment 432 and the center point of the adjustment disk 43 gradually decreases from the end of the straight segment 432 closer to the arc segment 433 to the other end.

[0047] Reference Figure 5 , Figure 6 It should be noted that when the first heat exchange unit 4 is fitted into the insertion interface 24, the two driven rods 414 can be positioned between the arc segments 433 of the two guide holes 431 respectively. At this time, the distance between the two heat exchange plates 41 reaches its maximum, and the side of each heat exchange plate 41 away from the other heat exchange plate 41 can abut and limit the movement with the adjacent first anti-detachment component 421. When the first heat exchange unit 4 needs to be cleaned and removed from the insertion interface 24, the adjusting plate 43 rotates under the drive of the rack plate 51, and the driven rods 414 can enter the straight segment 432 from the arc segment 433, thereby forcing the two heat exchange plates 41 to move closer to each other, reducing the contact between the heat exchange plates 41 and the inner wall of the insertion interface 24 and the adhesion of particulate matter to the inner wall of the insertion interface 24 during the disassembly process.

[0048] Back Figure 4The top of the heat exchange box 2 has multiple sets of limiting structures 28. The number of limiting structures 28 is equal to the number of connecting ports 251. Each limiting structure 28 is directly opposite to each connecting port 251. Each limiting structure 28 includes two limiting narrow holes 281. The width of the limiting narrow holes 281 is equal to the width of the heat exchange plate 41. When the heat exchange plate 41 is matched and inserted into the insertion interface 24, the two heat exchange plates 41 are moved away from each other to the limit position under the action of the adjusting plate 43. The two heat exchange plates 41 are directly opposite to the two limiting narrow holes 281.

[0049] Back Figure 3 Multiple sets of second heat exchange units 16 are arranged above the heat exchange box 2, and each set of second heat exchange units 16 is positioned directly opposite the limiting structure 28; see reference Figure 9 The second heat exchange unit 16 includes a plurality of second heat exchange fins 161 fixedly mounted inside the tower assembly 1, and the number of second heat exchange fins 161 is set to be equal to the number of first heat exchange fins 411.

[0050] Back Figure 3 The mechanism chamber 27 is also equipped with an elastic lifting mechanism 6. When the first heat exchange unit 4 is fully inserted into the insertion interface 24, the elastic lifting mechanism 6 can force the first heat exchange unit 4 to move upward. At this time, each heat exchange plate 41 can pass through the limiting narrow hole 281 and connect with the second heat exchange fin 161 directly above, so that the heat in the flue gas can be smoothly transferred to the internal air of the tower assembly 1 through the second heat exchange fin 161, thus playing a second heat exchange effect.

[0051] Reference Figure 7 The elastic lifting mechanism 6 includes a support plate 61, a connecting column 62, and a rigid spring 63. The connecting column 62 is fixedly connected to the bottom of the support plate 61 and is vertically inserted into the partition plate 25. A second anti-detachment component is provided at the end of the connecting column 62 away from the support plate 61. The outer diameter of the second anti-detachment component is larger than the outer diameter of the connecting column 62, which is used to prevent the connecting column 62 from directly detaching from the partition plate 25. The rigid spring 63 is sleeved on the connecting column 62. One end of the rigid spring 63 abuts against the bottom of the support plate 61, and the other end abuts against the top surface of the partition plate 25. The rigid spring 63 can always generate an elastic force acting on the support plate 61, thereby forcing the support plate 61 to move away from the partition plate 25, so that when the first insertion unit is inserted into the insertion interface 24, the heat exchange fins are forced to move upward and pass through the limiting narrow hole 281.

[0052] In addition, refer to Figure 9The bottom of the second heat exchange fin 161 is provided with multiple structural grooves 162, while the top of the first heat exchange fin 411 is provided with multiple structural protrusions 4111. Each structural protrusion 4111 is integrally formed with the first heat exchange fin 4111. When the first heat exchange unit 4 and the second heat exchange unit 16 are connected to each other, each structural protrusion 4111 can be respectively engaged in each structural groove 162, thereby increasing the contact area between the first heat exchange fin 411 and the second heat exchange fin 161, which can effectively improve the heat transfer efficiency between the two, and make the air inside the tower assembly 1 quickly absorb heat and rise in temperature.

[0053] Reference Figure 10 , Figure 11 A sealing seat 7 is slidably disposed on the inner wall of the heat exchange box 2. There are multiple sets of sealing seats 7, the specific number of which is equal to the number of insertion ports 24. Each set of sealing seats 7 is respectively disposed on each insertion port 24. The sealing seat 7 includes a first substrate 71, a second substrate 72 and a third substrate 73 connected in sequence, and is arranged in a U-shape. The first substrate 71 is used to cover the limiting structure 28, the second substrate 72 is used to cover the insertion port 24, and the third substrate 73 is used to cover the connecting port 251.

[0054] A ring stop 741 is fixed on the inner side of the heat exchange box 2 near the isolation chamber 31. The ring stop 741 has a transverse through-hole. A sliding guide rod 74 is fixed on the side of the second base plate 72. The axis of the sliding guide rod 74 is set horizontally, and the sliding guide rod 74 is matched and passed through the through-hole to realize the sliding connection of the sealing seat 7 in the heat exchange box 2.

[0055] A return spring 75 is also provided between the ring stop 741 and the second substrate 72. The return spring 75 is sleeved on the sliding guide rod 74. The return spring 75 can always generate an elastic force acting on the second substrate 72. Thus, when the first plug-in unit is disengaged from the plug-in interface 24, the return spring 75 can force the second substrate 72 to normally cover the plug-in interface 24. At the same time, the first substrate 71 can normally cover the limiting structure 28, and the third substrate 73 can normally cover the communication port 251, so as to maintain the sealed state inside the flue gas chamber 26.

[0056] Reference Figure 10The heat exchange box 2 has a clearance groove 29 on the side near the isolation chamber 31. The clearance groove 29 is connected to the adjacent insertion interface 24. The bottom of the second base plate 72 is connected to a push plate 721. The push plate 721 passes through the clearance groove 29 and extends to the inside of the isolation chamber 31. When the first heat exchange unit 4 is disengaged from the insertion interface 24, the push plate 721 will be located in front of the insertion interface 24, that is, on the movement path of the first heat exchange unit 4 when it is inserted into the insertion interface 24. When it is necessary to insert the first heat exchange unit 4 into the insertion interface 24, the first heat exchange unit 4 can abut against the push plate 721 and force the sealing seat 7 to move laterally, so that the sealing seat 7 can smoothly leave the communication port 251, so as to facilitate the smooth installation of the first heat exchange unit 4.

[0057] The inner bottom surface of the rectangular frame plate 3 is equipped with a rotating shaft 32, and the outer periphery of the rotating shaft 32 is movably fitted with a mating mechanism 33. There are multiple sets of mating mechanisms 33, and each set of mating mechanisms 33 is respectively set to correspond to each mating interface 24.

[0058] Specifically, the mating mechanism 33 includes a sliding seat 331, a limiting seat 332, and a telescopic rod 333. The sliding seat 331 is connected to the rotating shaft 32 via a sliding key. The sliding seat 331 can rotate with the rotating shaft 32, realizing both circumferential linkage between the sliding seat 331 and the rotating shaft 32, and allowing the sliding seat 331 to move along the axial direction of the rotating shaft 32. The outer circumferential surface of the sliding seat 331 is provided with a limiting annular groove 3311. The push plate 721, which is directly opposite the sliding seat 331, can partially extend into the limiting annular groove 3311, so that when the push plate 721 moves, the sliding seat 331 can follow the push plate 721 and move along the axial direction of the rotating shaft 32.

[0059] The limiting seat 332 is movably sleeved on the outside of the rotating shaft 32, and the limiting seat 332 is fixedly connected to the sliding seat 331. It should be noted that the limiting seat 332 and the sliding seat 331 are spaced apart, forming a limiting area 334 between them. The number of telescopic rods 333 is at least two sets, and the fixed end of each telescopic rod 333 is fixedly connected to the side of the sliding seat 331 near the limiting seat 332. In this embodiment, all telescopic rods 333 are arranged in an arc array around the central axis of the rotating shaft 32.

[0060] Back Figure 5 The bottom of the first heat exchange unit 4 is provided with a positioning plate 46. In this embodiment, the positioning plate 46 is fixed to the middle of the innermost guide post 43. The cross-sectional shape of the guide post 43 is rectangular. The side of the positioning plate 46 is provided with a plurality of positioning holes 461. The number of positioning holes 461 is equal to the number of telescopic rods 333. The movable end of each telescopic rod 333 can be inserted into each positioning hole 461.

[0061] When the first heat exchange unit 4 completely leaves the insertion interface 24 and disengages from the push plate 721, the sliding seat 331 can move towards the first heat exchange unit 4 under the drive of the return spring 75. At this time, the movable ends of each telescopic rod 333 will be located on the moving path of the first heat exchange unit 4. If the first heat exchange unit 4 is pulled outward, the guide arc surface of the side end face of the positioning plate 46 can abut against the movable ends of each telescopic rod 333 and retract them inward. After the positioning plate 46 moves to the position where each telescopic rod 333 is directly opposite to each positioning plate 46, each telescopic rod 333 is inserted into each positioning hole 461 under the elastic force of the internal spring. At this time, the positioning plate 46 is located inside the limiting area 334, and the first heat exchange unit 4 can be fixed on the rotating shaft 32. Then, the first heat exchange unit 4 can be easily cleaned by rotating the rotating shaft 32.

[0062] Back Figure 7 An operating mechanism 34 is provided at one end of the rotating shaft 32. The operating mechanism 34 can force the rotating shaft 32 to rotate, thereby driving the first heat exchange unit 4 to rotate vertically. Specifically, the operating mechanism 34 includes a worm gear 341 rotatably connected to the tower assembly 1 and a worm wheel 342 fixedly sleeved on the rotating shaft 32. The worm gear 341 and the worm wheel 342 mesh with each other for transmission. An operating handle 343 is connected to the end of the worm gear 341. The worm gear 341 can be manually rotated through the operating handle 343, thereby driving the rotating shaft 32 to rotate through the transmission connection between the worm gear 341 and the worm wheel 342.

[0063] The implementation principle of a ceramic sintering flue gas treatment system according to an embodiment of this application is as follows: During ceramic sintering, the flue gas generated during sintering enters the heat exchange box 2 through the flue gas duct, while clean external air enters the tower assembly 1 through the air inlet 11 and flows from bottom to top within the tower assembly 1. During the airflow, the air comes into contact with the outer wall of the heat exchange box 2, allowing the heat in the flue gas to be transferred to the air through the heat exchange box 2, achieving the first stage of heat exchange. Simultaneously, the heat in the flue gas is also transferred to the second heat exchange unit 16 through the first heat exchange unit 4. When the clean external air flows to the outside of the second heat exchange unit 16, the heat on the second heat exchange unit 16 can also be transferred to the air, achieving the second stage of heat exchange, thereby enabling the heat recovery tower to maintain a high waste heat recovery efficiency.

[0064] When the heat recovery tower has been used for a period of time, and particulate matter in the flue gas adheres to the first heat exchange unit 4, causing the heat recovery tower to descend, the outer cover plate 15 is opened. The operator's hand acts on the grip 44 to force the first heat exchange unit 4 to move downward and disengage from the limiting narrow hole 281. Then, the first heat exchange unit 4 is pulled outward and finally fixed in place with the positioning plate 46. Rotating the operating handle 343 can easily make the first heat exchange unit 4 flip outward to facilitate cleaning of the first heat exchange unit 4.

[0065] During the cleaning process of the first heat exchange unit 4, the sealing seat 7 can normally block the limiting structure 28, the insertion interface 24 and the connecting port 251, so that the inside of the heat exchange box 2 remains sealed. The flue gas can still enter the heat exchange box 2 and transfer heat to the air inside the tower assembly 1. Thus, the first heat exchange unit 4 can be cleaned without stopping the machine, so that the heat recovery tower maintains good waste heat recovery efficiency and has the effect of energy saving and consumption reduction.

[0066] The above are preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A ceramic sintering flue gas treatment system, comprising a desulfurization tower and a heat recovery tower, characterized in that: The heat recovery tower includes a tower assembly (1) and a heat exchange box (2) suspended inside the tower assembly (1). The top and bottom of the tower assembly (1) are respectively provided with an air inlet (11) and an air outlet (12). There is a heat exchange chamber (13) between the tower assembly (1) and the heat exchange box (2) for air to flow through. The two opposite sides of the heat exchange box (2) are respectively provided with a flue gas inlet (21) and a flue gas outlet (22). The flue gas inlet (21) and the flue gas outlet (22) are respectively extended to the outside of the tower assembly (1), and the flue gas inlet (21) is connected to the outlet end of the desulfurization tower. A rectangular frame plate (3) is fixed between the tower assembly (1) and the heat exchange box (2). The heat exchange chamber (13) is divided by the rectangular frame plate (3) to form an isolation chamber (31). A cleaning port (14) communicating with the isolation chamber (31) is provided on the side of the tower assembly (1). An outer cover plate (15) is detachably fixed on the side of the tower assembly (1). The outer cover plate (15) is matched and covered on the cleaning port (14). The heat exchange box (2) has multiple insertion ports (24) on its side near the isolation chamber (31), and each insertion port (24) is fitted with a first heat exchange unit (4); the top of the heat exchange box (2) has multiple limiting structures (28), each limiting structure (28) is respectively positioned opposite to each group of first heat exchange units (4); the top of the heat exchange box (2) has multiple groups of second heat exchange units (16) fixed to the tower assembly (1), each second heat exchange unit (16) is respectively positioned opposite to each limiting structure (28); The heat exchange box (2) is equipped with an elastic lifting mechanism (6). When the first heat exchange unit (4) is inserted into the insertion port (24), the elastic lifting mechanism (6) forces the first heat exchange unit (4) to pass through the limiting structure (28) and connect with the second heat exchange unit (16) directly above it. The heat exchange box (2) is equipped with a sealing seat (7) that slides laterally on its inner wall. When the first heat exchange unit (4) is disengaged from the insertion port (24), the sealing seat (7) normally covers the insertion port (24) and the limiting structure (28).

2. The ceramic sintering flue gas treatment system according to claim 1, characterized in that: The heat exchange box (2) is fixed with a partition plate (25), and the partition plate (25) and the bottom wall of the heat exchange box (2) enclose a mechanism chamber (27); the insertion port (24) is connected to the inside of the mechanism chamber (27), and the partition plate (25) is provided with a communication port (251) that is directly opposite to the insertion port (24); The elastic lifting mechanism (6) includes a support plate (61), a connecting column (62) fixed to the bottom of the support plate (61), and a rigid spring (63) disposed between the support plate (61) and the partition plate (25). The support plate (61) is vertically movably inserted into the partition plate (25) through the connecting column (62). The rigid spring (63) is sleeved on the connecting column (62), and the rigid spring (63) normally forces the support plate (61) to move away from the partition plate (25) so that the first heat exchange unit (4) can match and pass through the limiting structure (28).

3. The ceramic sintering flue gas treatment system according to claim 2, characterized in that: The first heat exchange unit (4) includes two heat exchange plates (41) and multiple guide posts (42) that are movably inserted through the two heat exchange plates (41). Each guide post (42) has a first anti-detachment component (421) at both ends. The outer diameter of the first anti-detachment component (421) is larger than the outer diameter of the guide post (42). The bottom of the two heat exchange plates (41) is provided with a rotatable adjustment plate (43). The adjustment plate (43) and the heat exchange plate are rotated and positioned by a damping structure. The mechanism chamber (27) is provided with an adjustment structure (5) that works with the adjustment plate (43). When the first heat exchange unit (4) is inserted into the insertion interface (24), the adjustment structure (5) forces the adjustment plate (43) to rotate and forces the two heat exchange plates (41) to move away from each other. The limiting structure (28) includes two limiting narrow holes (281) arranged side by side. When the two heat exchange plates (41) are far apart to their extreme positions, the two heat exchange plates (41) are respectively positioned opposite the two limiting narrow holes (281).

4. The ceramic sintering flue gas treatment system according to claim 3, characterized in that: Each heat exchange plate (41) is fixed with a driven rod (414) at its bottom. The side end face of the adjustment plate (43) is provided with two guide holes (431). The two driven rods (414) are respectively inserted into the two guide holes (431), and the outer diameter of the driven rod (414) is adapted to the width of the guide hole (431). The two guide holes (431) are mirror images of the center point of the adjustment disk (43). Each guide hole (431) includes a straight segment (432) and an arc segment (433). The arc segment (433) and the straight segment (432) are connected on one side. The arc axis of the arc segment (433) coincides with the center of the adjustment disk (43), and the distance from the straight segment (432) to the center point of the adjustment disk (43) gradually decreases from the side of the straight segment (432) closer to the arc segment (433) to the other side. The adjustment structure (5) includes a rack plate (51) fixedly installed inside the mechanism chamber (27), and a toothed portion (52) is provided on one side of the rack plate (51); the outer edge of the adjustment disc (43) is provided with an external toothed portion (435). When the first heat exchange unit (4) is matched and inserted into the insertion interface (24), the external toothed portion (435) meshes with the toothed portion (52) along the moving direction of the first heat exchange unit (4).

5. The ceramic sintering flue gas treatment system according to claim 3, characterized in that: The heat exchange plate (41) includes a plurality of first heat exchange fins (411) and a plurality of micro heat pipe array elements (412). The micro heat pipe array elements (412) are arranged vertically, and the first heat exchange fins (411) are arranged in a grid pattern. Each first heat exchange fin (411) and each micro heat pipe array element (412) are arranged alternately.

6. The ceramic sintering flue gas treatment system according to claim 5, characterized in that: The second heat exchange unit (16) includes a plurality of second heat exchange fins (161), the number of which is matched with the number of first heat exchange fins (411); the bottom of the second heat exchange fins (161) is provided with a plurality of structural grooves (162), and the top of the first heat exchange fins (411) is provided with a plurality of structural protrusions (4111). When the first heat exchange unit (4) and the second heat exchange unit (16) are connected to each other, each of the structural protrusions (4111) is respectively engaged in the respective structural grooves (162).

7. The ceramic sintering flue gas treatment system according to claim 3, characterized in that: The damping structure includes a spherical protrusion (434) disposed on the top surface of the adjustment plate (43) and an inner groove opened at the bottom of the heat exchange plate (41). There are multiple spherical protrusions (434), all of which are evenly distributed around the center of the adjustment plate (43), and each of the spherical protrusions (434) is engaged with the inner groove.

8. The ceramic sintering flue gas treatment system according to claim 3, characterized in that: The sealing base (7) includes a first substrate (71) for covering the limiting structure (28), a second substrate (72) for covering the insertion interface (24), and a third substrate (73) for covering the communication port (251). The first substrate (71), the second substrate (72), and the third substrate (73) are connected in sequence. A return spring (75) is provided between the second substrate (72) and the heat exchange box (2). The return spring (75) is used to force the second substrate (72) to normally cover the insertion interface (24). The bottom of the second substrate (72) is connected to a push plate (721), which passes through the heat exchange box (2) and extends to the inside of the isolation chamber (31); when the first heat exchange unit (4) is disengaged from the plug-in interface (24), the push plate (721) is normally located in front of the plug-in interface (24).

9. The ceramic sintering flue gas treatment system according to claim 8, characterized in that: The inner bottom surface of the rectangular frame plate (3) is rotatably mounted with a rotating shaft (32), and one end of the rotating shaft (32) is connected to an operating mechanism (34) for rotating it; the outer periphery of the rotating shaft (32) is movably fitted with a fitting mechanism (33), and the fitting mechanism (33) is engaged and linked with the push plate (721); The bottom of the first heat exchange unit (4) is provided with a positioning plate (46) that works with the insertion mechanism (33). When the first heat exchange unit (4) is disengaged from the push plate (721), the insertion mechanism (33) is located on the moving path of the first heat exchange unit (4). The insertion mechanism (33) is used to work with the positioning plate (46) to position the first heat exchange unit (4) so ​​as to realize the rotation setting of the first heat exchange unit (4).

10. The ceramic sintering flue gas treatment system according to claim 9, characterized in that: The fitting mechanism (33) includes a sliding seat (331), a limiting seat (332), and a telescopic rod (333). The sliding seat (331) is movably sleeved on the rotating shaft (32) and is circumferentially linked with the rotating shaft (32). The limiting seat (332) is fixedly connected to the sliding seat (331), and a limiting area (334) for the positioning plate (46) to enter is formed between the limiting seat (332) and the sliding seat (331). The telescopic rods (333) are provided in multiple sets, and each telescopic rod (333) is fixed to the side of the sliding seat (331) near the limiting seat (332). The side of the positioning plate (46) is provided with multiple positioning holes (461). When the first heat exchange unit (4) is completely disengaged from the push plate (721), the movable end of the telescopic rod (333) can be inserted and positioned in accordance with the positioning hole (461).

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