Air leakage and ash clogging treatment mechanism for rotary heat exchanger

Abstract

The utility model discloses a rotary heat exchanger air leakage and ash clogging processing mechanism which comprises a cold end center truss, a hot end center truss and a fan, and the outer wall of the hot end center truss and the outer wall of the cold end center truss are both connected with sector plate assemblies. The air entraining end of the draught fan is connected with an air entraining gathering pipe, the end, away from the draught fan, of the air entraining gathering pipe is connected with a tee joint, and the two ends, not connected with the air entraining gathering pipe, of the tee joint are connected with a dredge air gathering pipe and a hot smoke outlet pipe respectively. The outer wall of the dredging air gathering pipe is communicated with a plurality of groups of cold-end fan-shaped plate dredging air pipelines, axial sealing plate dredging air pipelines, axial sealing plate dredging air pipelines and hot-end fan-shaped plate dredging air pipelines; and the air supply end of the fan is connected with an air supply gathering pipe. The utility model solves the problems that the ash cleaning effect is not ideal and the ash clogging becomes the most difficult problem of the rotary air preheater because the accumulated ash is formed and hardened on the surface of the heat transfer element.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotary heat exchangers, and in particular relates to an air leakage and ash blockage processing mechanism for a rotary heat exchanger. Background Art

[0002] Rotary air heat exchangers and rotary flue gas heaters are widely used in thermal power and steel mill industries. As shown in the figure below, the heat storage element is arranged in the rotor and rotates with the central axis. The heat conversion is realized by the continuous rotation of the heat storage element. Due to the pressure difference of the heat exchange medium, in order to separate the high and low temperature heat exchange medium, a fan plate, static seal, and sealing sheet components need to be set between the high and low temperature media. The fan plate and the truss are sealed by static seals, the fan plate or arc plate and the rotor are sealed by three-way sealing sheets, and the central shaft and the truss are sealed by the central shaft seal.

[0003] Due to the high density of the rotary heat exchanger's heating elements and the excessive ammonia spraying of the unit to ensure denitrification efficiency, and the low wall temperature of the heat transfer elements at the cold end of the rotary heat exchanger, which is lower than the dew point of ammonium bisulfate, liquid ammonium bisulfate adheres to the surface of the heat transfer elements and continuously captures fly ash, causing ash blockage.

[0004] However, there are some problems with the existing technology: the technology for treating ash blockage includes using loose heat transfer element plate type, increasing the height of cold end element, increasing the frequency of ash blowing, etc. However, since the ash accumulation has been formed and is hardened on the surface of the heat transfer element, the cleaning effect is not ideal. Ash blockage has also become the most difficult problem of rotary air preheater. Therefore, we propose a mechanism for treating air leakage and ash blockage of rotary heat exchanger. Utility Model Content

[0005] In view of the problems existing in the above-mentioned technologies, the utility model provides a mechanism for treating air leakage and dust blockage of a rotary heat exchanger, which solves the problem that dust accumulation has been formed and hardened on the surface of the heat transfer element, resulting in unsatisfactory cleaning effect and dust blockage becoming the most difficult problem of the rotary air preheater.

[0006] The utility model is implemented as follows: a rotary heat exchanger air leakage and ash blockage processing mechanism comprises a cold end central truss, a hot end central truss and a fan, wherein the hot end central truss is connected to the right side of the cold end central truss, and the outer walls of the hot end central truss and the cold end central truss are symmetrically connected with fan-shaped plate components, and the fan-shaped plate components are installed on the outer walls of the hot end central truss and the cold end central truss; the upper end of the hot end central truss is connected with a small warehouse hot smoke outlet pipe, and the upper end of the small warehouse hot smoke outlet pipe is connected with a tee, and the two ends of the tee away from the small warehouse hot smoke outlet pipe are respectively connected with a small warehouse hot smoke outlet branch pipe 1 and a small warehouse hot smoke outlet branch pipe 2; the fan air intake end is connected with an air intake collection pipe, and the The end of the induced air collecting pipe away from the fan is connected with a tee, and the two ends of the tee not connected to the induced air collecting pipe are respectively connected to the drainage air collecting pipe and the hot flue gas outlet pipe, the outer wall of the drainage air collecting pipe is connected with multiple groups of cold-end fan-shaped plate drainage air ducts, axial sealing plate drainage air ducts and hot-end fan-shaped plate drainage air ducts, and the ends of the cold-end fan-shaped plate drainage air ducts, axial sealing plate drainage air ducts and hot-end fan-shaped plate drainage air ducts away from the drainage air collecting pipe are all connected to the fan-shaped plate assembly; the fan air supply end is connected to the air supply collecting pipe, the upper end of the air supply collecting pipe is connected with a tee, and the two ends of the tee away from the air supply pipe collecting pipe are respectively connected to the air supply branch pipe one and the air supply branch pipe two.

[0007] As a preferred embodiment of the utility model, the fan-shaped plate assembly includes a hot-end guiding fan-shaped plate, a cold-end guiding fan-shaped plate and a guiding axial sealing plate, the hot-end guiding fan-shaped plate is located at the upper end of the cold-end guiding fan-shaped plate, the guiding axial sealing plate is located between the hot-end guiding fan-shaped plate and the cold-end guiding fan-shaped plate, and the hot-end fan-shaped plate guiding air duct is connected to the hot-end guiding fan-shaped plate, the axial sealing plate guiding air duct is connected to the guiding axial sealing plate, and the cold-end fan-shaped plate guiding air duct is connected to the cold-end guiding fan-shaped plate.

[0008] As a preferred embodiment of the utility model, the hot end dredging fan-shaped plate and the cold end dredging fan-shaped plate are connected to the upper and lower ends of the cold end center truss and the hot end center truss, and the hot end dredging fan-shaped plate and the cold end dredging fan-shaped plate both include a fan-shaped mounting plate, and the outer edge of the lower end of the fan-shaped mounting plate is connected to the rear end plate, the front end plate and two side end plates and two side plates, the front end plate is shorter than the rear end plate, and the front end plate and the rear end plate respectively correspond to the front and rear sides of the fan-shaped mounting plate, the front end plate and the rear end plate are connected between the two side plates, a dredging air box is connected between the front end plate and the rear end plate, and a plurality of reinforcing rib plates are connected to the lower end of the fan-shaped mounting plate.

[0009] As a preferred embodiment of the utility model, the diversion axial sealing plate is connected to the front and rear sides of the cold end center truss and the hot end center truss, the diversion axial sealing plate includes an arc-shaped mounting plate, and the side of the arc-shaped mounting plate that is not in contact with the cold end center truss and the hot end center truss is symmetrically connected to the side plate, the lower end of the arc-shaped mounting plate is connected to an air guide box, and the inside of the arc-shaped mounting plate is connected to a plurality of transverse reinforcing rib plates and longitudinal reinforcing rib plates, the transverse reinforcing rib plates and the longitudinal reinforcing rib plates are cross-arranged, and the outermost side of the device is connected to the side plate.

[0010] As a preferred embodiment of the present invention, the outer walls of the arc-shaped mounting plate and the fan-shaped mounting plate are provided with drainage holes.

[0011] As a preferred embodiment of the utility model, each port of the intake air main pipe, the supply air main pipe, the supply air duct one, the supply air branch pipe one, the supply air branch pipe two, the supply air duct two, the small warehouse hot smoke outlet pipe, the small warehouse hot smoke outlet branch pipe one, the small warehouse hot smoke outlet branch pipe two, the hot end fan-shaped plate air guide duct, the axial sealing plate air guide duct, and the cold end fan-shaped plate air guide duct is connected to a baffle door.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model combines the dredging seal with the cold end hot flushing technology, and uses a single fan to achieve comprehensive treatment of air leakage and ash blockage, which can greatly reduce the cost of the power plant;

[0014] 2. The utility model adopts a super-low air leakage rate dredging and sealing system, which can control the air leakage rate to 0.5% to 3.5%. At the same time, it can automatically adjust the opening and closing of the electric damper doors at various locations according to the load of the unit, and automatically adjust the fan output, saving the fan power consumption under the premise of ensuring the air leakage rate;

[0015] 3. The hot air extracted by the utility model can enter the hot secondary air duct as needed, reducing heat loss and improving boiler efficiency;

[0016] 4. The hot air drawn out by the utility model can enter the cold secondary air duct as needed, playing the role of a heater, increasing the average wall temperature of the cold end of the rotary heat exchanger, reducing the risk of condensation of ammonium bisulfate, preventing dust blockage of heat transfer elements, and increasing the service life of the elements;

[0017] 5. The hot smoke extracted by the utility model can heat the cold end heat transfer element as needed, increase the wall temperature of the cold end heat transfer element, reduce the risk of condensation of ammonium bisulfate, prevent ash blockage of the heat transfer element, and gasify the accumulated ash to reduce ash blockage;

[0018] 6. The hot smoke extracted by the utility model can enter the low-temperature economizer as needed to heat the boiler feed water and improve the boiler efficiency;

[0019] 7. The utility model equipment can realize online maintenance, and the system isolation is realized by closing the electric baffle door, which has no effect on the original mechanical seal;

[0020] 8. The utility model equipment has a simple and reliable structure, a high degree of automation, and can achieve long-term temperature operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of a three-dimensional structure provided by an embodiment of the utility model;

[0022] Figure 2 It is a side-view stereoscopic schematic diagram provided by an embodiment of the utility model;

[0023] Figure 3 It is a three-dimensional schematic diagram of a fan-shaped plate assembly provided by an embodiment of the utility model;

[0024] Figure 4 It is a three-dimensional schematic diagram of a hot end drainage fan-shaped plate provided in an embodiment of the utility model;

[0025] Figure 5 It is a three-dimensional schematic diagram of a drainage axial sealing plate provided in an embodiment of the utility model;

[0026] Figure 6 It is a three-dimensional schematic diagram of a cold end drainage fan-shaped plate provided in an embodiment of the utility model.

[0027] In the figure: 1. Fan; 2. Air intake manifold; 3. Air supply manifold; 4. Air supply duct 1; 5. Air supply branch 1; 6. Air supply branch 2; 7. Air supply duct 2; 8. Fan plate assembly; 10. Small warehouse hot smoke outlet pipe; 11. Small warehouse hot smoke outlet branch 1; 12. Small warehouse hot smoke outlet branch 2; 13. Drainage air manifold; 14. Hot end fan plate drainage air duct; 15. Axial sealing plate drainage air duct; 17. Cold end fan plate drainage air duct; 18. Hot flue gas Lead-out pipe; 19. Tee; 20. Baffle door; 33. Hot-end drainage fan-shaped plate; 34. Cold-end drainage fan-shaped plate; 35. Drainage axial sealing plate; 36. Cold-end center truss; 37. Hot-end center truss; 38. Fan-shaped mounting plate; 39. Drainage air box; 40. Front end plate; 41. Rear end plate; 42. Side end plate; 43. Reinforcement rib plate 1; 44. Arc-shaped mounting plate; 45. Air guide box; 46. Side plate; 47. Transverse reinforcement rib plate; 48. Longitudinal reinforcement rib plate. DETAILED DESCRIPTION

[0028] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0029] The structure of the utility model is described in detail below in conjunction with the accompanying drawings.

[0030] Embodiment 1:

[0031] like Figure 1 As shown, a rotary heat exchanger air leakage and ash blockage treatment mechanism provided by an embodiment of the utility model comprises a cold end central truss 36, a hot end central truss 37 and a fan 1, wherein the hot end central truss 37 is connected to the right side of the cold end central truss 36, and the outer walls of the hot end central truss 37 and the cold end central truss 36 are symmetrically connected with fan-shaped plate components 8, and the fan-shaped plate components 8 are installed on the outer walls of the hot end central truss 37 and the cold end central truss 36; the upper end of the hot end central truss 37 is connected with a small warehouse hot smoke outlet pipe 10, and the upper end of the small warehouse hot smoke outlet pipe 10 is connected with a tee 19, and the two ends of the tee 19 away from the small warehouse hot smoke outlet pipe 10 are respectively connected with a small warehouse hot smoke outlet branch pipe 11 and a small warehouse hot smoke outlet branch pipe 2 12; the air intake end of the fan 1 is connected with an air intake collecting pipe 2, The end of the bleed air collecting pipe 2 away from the fan 1 is connected to a tee 19, and the two ends of the tee 19 not connected to the bleed air collecting pipe 2 are respectively connected to the drainage air collecting pipe 13 and the hot flue gas outlet pipe 18, the outer wall of the drainage air collecting pipe 13 is connected to multiple groups of cold-end fan-shaped plate drainage air ducts 17, axial sealing plate drainage air ducts 15 and hot-end fan-shaped plate drainage air ducts 14, and the ends of the cold-end fan-shaped plate drainage air ducts 17, axial sealing plate drainage air ducts 15 and hot-end fan-shaped plate drainage air ducts 14 away from the drainage air collecting pipe 13 are all connected to the fan-shaped plate assembly 8; the air supply end of the fan 1 is connected to the air supply collecting pipe 3, the upper end of the air supply collecting pipe 3 is connected to the tee 19, and the two ends of the tee 19 away from the air supply pipe collecting pipe are respectively connected to the air supply branch pipe 1 5 and the air supply branch pipe 2 6.

[0032] like Figures 2 to 6As shown, the fan-shaped plate assembly 8 includes a hot end guiding fan-shaped plate 33, a cold end guiding fan-shaped plate 34 and a guiding axial sealing plate 35, wherein the hot end guiding fan-shaped plate 33 is located at the upper end of the cold end guiding fan-shaped plate 34, and the guiding axial sealing plate 35 is located between the hot end guiding fan-shaped plate 33 and the cold end guiding fan-shaped plate 34, and the hot end fan-shaped plate guiding air duct 14 is connected to the hot end guiding fan-shaped plate 33, the axial sealing plate guiding air duct 15 is connected to the guiding axial sealing plate 35, and the cold end fan-shaped plate guiding air duct 17 is connected to the cold end guiding fan-shaped plate 34; the hot end guiding fan-shaped plate 33 is located at the upper end of the cold end guiding fan-shaped plate 34, and the guiding axial sealing plate 35 is located between the hot end guiding fan-shaped plate 33 and the cold end guiding fan-shaped plate 34. 3 and the cold end drainage fan-shaped plate 34 are connected to the upper and lower ends of the cold end central truss 36 and the hot end central truss 37. The hot end drainage fan-shaped plate 33 and the cold end drainage fan-shaped plate 34 both include a fan-shaped mounting plate 38. The outer edge of the lower end of the fan-shaped mounting plate 38 is connected to a rear end plate 41, a front end plate 40 and two side end plates 42, and two side plates 46. The length of the front end plate 40 is smaller than that of the rear end plate 41, and the front end plate 40 and the rear end plate 41 correspond to the front and rear sides of the fan-shaped mounting plate 38 respectively. The front end plate 40 and the rear end plate 41 are connected between the two side plates 46. The front end plate 40 and A dredging air box 39 is connected between the rear end plates 41, and a plurality of reinforcing ribs 43 are connected to the lower end of the fan-shaped mounting plate 38; the dredging axial sealing plate 35 is connected to the front and rear sides of the cold end center truss 36 and the hot end center truss 37, and the dredging axial sealing plate 35 includes an arc-shaped mounting plate 44, and a side plate 46 is symmetrically connected to the side of the arc-shaped mounting plate 44 that is not in contact with the cold end center truss 36 and the hot end center truss 37, and the lower end of the arc-shaped mounting plate 44 is connected to an air guide box 45, and a plurality of transverse reinforcing ribs 47 and longitudinal reinforcing ribs 48 are connected inside the arc-shaped mounting plate 44. The transverse reinforcing ribs 47 and the longitudinal reinforcing ribs 48 are arranged in a cross shape, and the outermost side of the device is connected to the side plate 46; the outer walls of the arc-shaped mounting plate 44 and the fan-shaped mounting plate 38 are provided with drainage holes; each port of the air intake manifold 2, the air supply manifold 3, the air supply duct one 4, the air supply branch pipe one 5, the air supply branch pipe two 6, the air supply duct two 7, the small warehouse hot smoke outlet pipe 10, the small warehouse hot smoke outlet branch pipe one 11, the small warehouse hot smoke outlet branch pipe two 12, the hot end fan-shaped plate drainage duct 14, the axial sealing plate drainage duct 15, and the cold end fan-shaped plate drainage duct 17 is connected to a baffle door 20.

[0033] Working principle of embodiment 1:

[0034] When in use, there are two sources of smoke and air at the inlet of the fan 1. One is the drainage leakage air introduced through the drainage air collection pipe 13, which is controlled by the damper door 20 connected to the three-way 19 port before entering the fan 1; the other is the hot smoke introduced through the hot smoke outlet pipe 18, which is controlled by the damper door 20 connected to the three-way 19 port before entering the fan 1.

[0035] The sources of drainage leakage air introduced by the drainage air collection duct 13 are as follows: the hot end fan plate drainage air duct 14 is connected to the drainage air box 39 of the hot end drainage fan plate 33, and the cold end fan plate drainage air duct 17 is connected to the drainage air box 39 of the cold end drainage fan plate 34. A drainage duct with a lower diameter is used to control the flow rate of the drainage leakage air. The axial sealing plate drainage air duct 15 is connected to the drainage air box 39 of the drainage axial sealing plate 35. Through the hot end fan plate drainage air duct 14, the axial sealing plate drainage air duct 15, and the cold end fan plate drainage air duct 17, the air leakage to the flue gas is extracted and collected in the drainage air collection duct 13, and then leads to the fan 1. Baffle doors 20 are respectively provided on the hot end fan-shaped plate air duct 14, the axial sealing plate air duct 15, and the cold end fan-shaped plate air duct 17. The opening and closing of the baffle doors 20 can be controlled according to pressure and temperature parameters to achieve control of direct air leakage.

[0036] The hot flue gas outlet pipe 18 directly extracts the hot flue gas by extending the pipe into the hot flue, and then sends it to the fan 1.

[0037] There are two directions for the smoke and wind at the outlet of the fan 1. One is to be sent to the cold end sub-compartment through the air supply pipe 27. The sub-compartment is a sealed small space composed of a fan-shaped plate assembly 8 and a cold end central truss 36, with a temperature of about 7.5 degrees, and is located on the side where the smoke rotor turns in. The hot smoke sent to the sub-compartment through the air supply pipe 27 can heat the cold end heat transfer element in the sub-compartment, increase the wall temperature of the cold end heat transfer element to be higher than the acid dew point of ammonium bisulfate, eliminate condensation, and avoid ash accumulation. At the same time, the high-temperature smoke can also gasify and take away the hardened ash, reducing ash blockage. After heating the cold end sub-compartment, the smoke is discharged through the hot end sub-compartment composed of the fan-shaped plate assembly 8 and the hot end central truss 37, and can be discharged to the induced draft fan 1 or Go to the low-temperature economizer inlet to heat the boiler feed water. In addition, the small sub-compartment is located on the rotor rotation side, which can effectively reduce the rotor's carryover leakage. The baffle door 20 arranged on the air supply main pipe 3 and the air supply pipe 27, the baffle door 20 connected to the small warehouse hot smoke lead-out branch pipe 11, the small warehouse hot smoke lead-out branch pipe 2 12, and the small warehouse hot smoke lead-out pipe 10 port controls the direction of the flue gas; the second is to discharge the hot flue gas to the low-temperature economizer or the induced draft fan 1 through the air supply pipe 14, or to discharge the leaked air to the cold and hot secondary air ducts, the baffle door 20 arranged on the air supply main pipe 3 and the air supply pipe 27, and the baffle door 20 connected to the air supply branch pipe 15 and the air supply branch pipe 26 ports control the direction of the flue gas or air.

[0038] In summary, the opening and closing of the baffle door 20 can be used to control the flow direction of the diversion air and the hot flue gas, so that the leaked air can be discharged to the low-temperature economizer, the induced draft fan, the cold and hot secondary air ducts, etc., thereby achieving the purpose of controlling air leakage; in addition, the hot flue gas can heat the cold-end heat transfer element and discharge the hot flue gas to the low-temperature economizer, the induced draft fan, the cold and hot secondary air ducts, etc., thereby achieving the purpose of controlling ash blockage.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary heat exchanger air leakage and ash blockage treatment mechanism, comprising a cold end central truss (36), a hot end central truss (37) and a fan (1), characterized in that: The hot end central truss (37) is connected to the right side of the cold end central truss (36); the outer walls of the hot end central truss (37) and the cold end central truss (36) are symmetrically connected with fan-shaped plate components (8), and the fan-shaped plate components (8) are installed on the outer walls of the hot end central truss (37) and the cold end central truss (36); the upper end of the hot end central truss (37) is connected with a small warehouse hot smoke outlet pipe (10), and the upper end of the small warehouse hot smoke outlet pipe (10) is connected with a tee (19), and the two ends of the tee (19) away from the small warehouse hot smoke outlet pipe (10) are respectively connected to a small warehouse hot smoke outlet branch pipe 1 (11) and a small warehouse hot smoke outlet branch pipe 2 (12); the air intake end of the fan (1) is connected with an air intake manifold (2), and the end of the air intake manifold (2) away from the fan (1) is connected with a tee (19), and the three The two ends of the passage (19) not connected to the bleed air collecting pipe (2) are respectively connected to a drainage air collecting pipe (13) and a hot flue gas outlet pipe (18); the outer wall of the drainage air collecting pipe (13) is connected to a plurality of groups of cold end fan-shaped plate drainage air ducts (17), axial sealing plate drainage air ducts (15) and hot end fan-shaped plate drainage air ducts (14); the ends of the cold end fan-shaped plate drainage air ducts (17), axial sealing plate drainage air ducts (15) and hot end fan-shaped plate drainage air ducts (14) away from the drainage air collecting pipe (13) are all connected to the fan-shaped plate assembly (8); the air supply end of the fan (1) is connected to the air supply collecting pipe (3); the upper end of the air supply collecting pipe (3) is connected to a tee (19); the two ends of the tee (19) away from the air supply pipe collecting pipe are respectively connected to an air supply branch pipe 1 (5) and an air supply branch pipe 2 (6).

2. The rotary heat exchanger air leakage and dust blockage treatment mechanism according to claim 1, characterized in that: The fan-shaped plate assembly (8) comprises a hot end diversion fan-shaped plate (33), a cold end diversion fan-shaped plate (34) and a diversion axial sealing plate (35); the hot end diversion fan-shaped plate (33) is located at the upper end of the cold end diversion fan-shaped plate (34); the diversion axial sealing plate (35) is located between the hot end diversion fan-shaped plate (33) and the cold end diversion fan-shaped plate (34); the hot end fan-shaped plate diversion air duct (14) is connected to the hot end diversion fan-shaped plate (33); the axial sealing plate diversion air duct (15) is connected to the diversion axial sealing plate (35); and the cold end fan-shaped plate diversion air duct (17) is connected to the cold end diversion fan-shaped plate (34).

3. The rotary heat exchanger air leakage and dust blockage treatment mechanism according to claim 2, characterized in that: The hot end dredging fan-shaped plate (33) and the cold end dredging fan-shaped plate (34) are connected to the upper and lower ends of the cold end central truss (36) and the hot end central truss (37). The hot end dredging fan-shaped plate (33) and the cold end dredging fan-shaped plate (34) both include a fan-shaped mounting plate (38). The outer edge of the lower end of the fan-shaped mounting plate (38) is connected to a rear end plate (41), a front end plate (40), two side end plates (42), and two side plates (46). The front end plate (40) is shorter than the rear end plate (41), and the front end plate (40) and the rear end plate (41) correspond to the front and rear sides of the fan-shaped mounting plate (38) respectively. The front end plate (40) and the rear end plate (41) are connected between the two side plates (46). A dredging ventilator (39) is connected between the front end plate (40) and the rear end plate (41). The lower end of the fan-shaped mounting plate (38) is connected to a plurality of reinforcing rib plates (43).

4. The rotary heat exchanger air leakage and dust blockage treatment mechanism according to claim 3, characterized in that: The diversion axial sealing plate (35) is connected to the front and rear sides of the cold end central truss (36) and the hot end central truss (37), and the diversion axial sealing plate (35) includes an arc-shaped mounting plate (44), and the side of the arc-shaped mounting plate (44) that is not in contact with the cold end central truss (36) and the hot end central truss (37) is symmetrically connected to a side plate (46), and the lower end of the arc-shaped mounting plate (44) is connected to an air guide box (45), and the arc-shaped mounting plate (44) is internally connected to a plurality of transverse reinforcing rib plates (47) and longitudinal reinforcing rib plates (48), and the transverse reinforcing rib plates (47) and the longitudinal reinforcing rib plates (48) are arranged in a cross shape, and the outermost side of the device is connected to the side plate (46).

5. The rotary heat exchanger air leakage and dust blockage treatment mechanism according to claim 4, characterized in that: The outer walls of the arc-shaped mounting plate (44) and the fan-shaped mounting plate (38) are provided with drainage holes.

6. The rotary heat exchanger air leakage and dust blockage treatment mechanism according to claim 1, characterized in that: Each port of the air intake main pipe (2), the air supply main pipe (3), the air supply pipe 1 (4), the air supply branch pipe 1 (5), the air supply branch pipe 2 (6), the air supply pipe 2 (7), the small warehouse hot smoke outlet pipe (10), the small warehouse hot smoke outlet branch pipe 1 (11), the small warehouse hot smoke outlet branch pipe 2 (12), the hot end fan-shaped plate air guide pipe (14), the axial sealing plate air guide pipe (15), and the cold end fan-shaped plate air guide pipe (17) is connected to a baffle door (20).

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