Boiler flue heat exchange dust remover

Abstract

The invention belongs to the technical field of heat exchange flue dust removal, and discloses a boiler flue heat exchange dust remover which comprises a heat exchange flue, the heat exchange flue comprises a heat insulation cover and a heat exchange cover installed in the heat insulation cover, and a fixing cylinder is arranged at the bottom of the heat insulation cover. Connecting blocks used for connecting the fixing cylinder and the heat insulation cover are fixedly connected to the bottom of the heat insulation cover in a circumferential array mode. According to the scheme, a hydraulic rod is operated to push a connecting ring to drive a connecting pipe and a guide groove to move downwards, so that the guide groove slides into an inclined part from a vertical part of the guide groove, further, the connecting pipe can drive a spline sleeve and a scraper to rotate through a spline groove, and the scraper scrapes dust particles attached to the inner wall of the heat exchange cover; and meanwhile, the top of the scraping plate can also clean the bottom of the stainless steel fiber filter plate, and scraped ash can enter the slag discharging cover through the bottom of the heat insulation cover to be discharged, so that the problem that the heat exchange efficiency of the flue is reduced due to the fact that too many dust particles are attached to the heat exchange flue is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of heat exchange flue dust removal, in particular to a boiler flue heat exchange dust remover. Background Art

[0002] The boiler combustion process will produce flue gas with a large amount of heat and complex composition. Heat exchange and dust removal treatment of the flue gas is a necessary measure to improve energy efficiency and reduce environmental pollution.

[0003] For example, the invention with publication number CN101280925B discloses a boiler flue heat exchange dust collector, in which a vortex plate for dust removal is provided in the centrifugal cylinder, and a water tank is provided above the centrifugal cylinder. The water tank is sleeved on the outer side of the part of the upper end of the exhaust pipe extending out of the centrifugal cylinder. Therefore, this device can not only remove dust, but also in the process of flue gas discharge, the high-temperature flue gas in the exhaust pipe exchanges heat with the water in the water tank to increase the water temperature, thereby making full use of the waste heat of the flue gas.

[0004] Although the above scheme can realize the centrifugal separation of dust in flue gas through the centrifugal cylinder to improve the heat exchange effect, some dust will still adhere to the centrifugal cylinder or the exhaust pipe and the heat pipe. When there are too many dust particles attached to the three, the efficiency of heat exchange between the heat pipe or the exhaust pipe and the water source in the water tank will be reduced. Therefore, in order to solve the above problem, a boiler flue heat exchange dust collector is proposed to solve the problem raised in the background technology. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a boiler flue heat exchange dust collector, which solves the problem that excessive dust particles attached to the heat exchange flue will reduce the heat exchange efficiency of the heat exchange flue.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a boiler flue heat exchange dust collector, comprising a heat exchange flue, the heat exchange flue comprising a heat insulation cover and a heat exchange cover installed inside the heat insulation cover, a fixing cylinder is arranged at the bottom of the heat insulation cover, a connecting block for connecting the fixing cylinder and the heat insulation cover is fixedly connected to a circumferential array at the bottom of the heat insulation cover, a water inlet pipe and a drain pipe are respectively connected to the top and bottom of the heat insulation cover, a portion between the inner wall of the heat insulation cover and the inner wall of the heat exchange cover is a chamber, and further comprising: a cleaning component, which is arranged at the bottom of the heat exchange flue; an isolation component, which is installed at the bottom of the heat exchange flue and used for sealing when the bottom of the heat insulation cover is discharged; The cleaning assembly comprises a connecting pipe movably connected to the interior of the fixed cylinder, the connecting pipe is provided with a guide groove, the connecting pipe is provided with a spline sleeve, a through hole 1, a through hole 2 and an inclined groove 1, the external movable sleeve of the connecting pipe is provided with a spline sleeve matched with the spline groove, the external circumferential array of the spline sleeve is fixedly connected with a scraper in contact with the inner wall of the heat exchange cover, the inner wall of the fixed cylinder is fixedly connected with a convex shaft that can slide in the guide groove, the bottom of the connecting pipe is also connected with a connecting ring located below the fixed cylinder by a bearing, the bottom of the fixed cylinder is provided with a hydraulic rod whose output end is fixedly connected to the connecting ring, the bottom of the heat insulation cover is also provided with a slag discharge cover that can communicate with the gap between the fixed cylinder and the bottom of the heat insulation cover, and the outer layer and the inner layer of the slag discharge cover are respectively fixedly connected to the heat insulation cover and the bottom of the fixed cylinder; The fixed cylinder is provided with a limiting groove, and the bottom of the fixed cylinder is fixedly connected with a smoke inlet pipe, and the smoke inlet pipe is connected with the inner cavity of the heat exchange cover through the through hole 1, the connecting pipe and the through hole 2; The guide groove is divided into two parts, a vertical part and an inclined part. In an initial state, the convex shaft is located at the bottom end of the vertical part of the guide groove.

[0007] Preferably, the isolation assembly comprises a split ring movably sleeved on the outside of the fixed cylinder, the inner wall of the split ring is fixedly connected with a cross bar that can slide in the limit groove, and one end of the cross bar can slide in the inclined groove, and the split ring is also provided with a groove for covering the connection block when descending; The heat insulation cover is also provided with a first inclined surface and a second inclined surface which respectively cooperate with the upper inclined surface and the lower inclined surface of the split ring for sealing.

[0008] Preferably, the slope and length of the inclined portion of the guide groove are equal to those of the inclined groove 1, and the width of the inclined groove 1 is greater than the width of the guide groove.

[0009] Preferably, the gap between the inner wall of the heat insulation cover and the inner wall of the heat exchange cover decreases from top to bottom; A spiral partition is fixedly connected between the inner wall of the heat insulation cover and the inner wall of the heat exchange cover. The spiral partition divides the chamber into a spiral channel, and the pitch of the spiral partition increases from top to bottom.

[0010] Preferably, a stainless steel fiber filter plate is fixedly connected to the top of the heat exchange cover; and the top of the scraper is horizontal and can contact the bottom of the stainless steel fiber filter plate.

[0011] Preferably, an adjustment component for sealing the middle part of the connecting pipe is fixedly connected to the heat exchange cover; The adjustment assembly includes a fixing rod fixedly connected to the top of the heat exchange cover and located above the stainless steel fiber filter plate. The bottom end of the fixing rod passes through the stainless steel fiber filter plate and the top of the connecting pipe and extends to the middle of the connecting pipe. The bottom end of the fixing rod is elastically supported by an elastic sealing block 2. A through hole 3 is opened in a circular array on the top of the connecting pipe. In the initial state, the bottom of the elastic sealing block 2 abuts against the middle of the connecting pipe to separate the middle of the connecting pipe.

[0012] Preferably, when the connecting pipe moves downward and the convex shaft moves to the bending part of the guide groove, the second elastic sealing block releases the separation of the middle part of the connecting pipe, and the second through hole moves downward to the inside of the fixed cylinder and is blocked.

[0013] Preferably, a dust removal component for collecting waste residue attached to the inner wall of the connecting pipe is fixedly connected to the bottom of the connecting pipe.

[0014] Preferably, the dust removal assembly includes an elastic sealing block 1 which is elastically connected to the bottom of the connecting pipe and located below the through hole 1. The bottom of the connecting pipe is threadedly connected to a collecting tank. The bottom of the collecting tank is fixed with a top rod which abuts against the elastic sealing block 1 in an initial state. The elastic sealing block can seal the bottom of the connecting pipe when it moves downward.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The above scheme drives the connecting ring to drive the connecting pipe and the guide groove downward by running the hydraulic rod, so that the guide groove slides from the vertical part of the guide groove to the inclined part, and then the inclined part of the guide groove is limited by the convex shaft to rotate the connecting pipe. Further, the connecting pipe drives the spline sleeve and the scraper to rotate through the spline groove, so that the scraper scrapes the dust particles attached to the inner wall of the heat exchange cover, and the top of the scraper also cleans the bottom of the stainless steel fiber filter plate, and the scraped ash will enter the slag discharge cover through the bottom of the heat insulation cover and be discharged, thereby solving the problem that too much dust particles attached to the heat exchange flue will reduce the heat exchange efficiency of the flue; In the above scheme, when the convex shaft enters the bent part from the vertical part of the guide groove, the elastic sealing block 2 is in a natural state. When the convex shaft continues to move, the elastic sealing block 2 will release the blockage of the middle part of the connecting pipe. At the same time, the downward direction of the through hole 2 will be blocked by the fixed tube. At this time, the smoke at the smoke inlet pipe will be blown downward through the through hole 3 at the top of the connecting pipe, avoiding the situation where a large amount of dust particles float upward when the scraper scrapes the ash on the heat exchange cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the top planar structure of the present invention; Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure in the AA direction; Figure 4 for Figure 3 Enlarged view of point C in the middle; Figure 5 for Figure 3 The enlarged view of point D in the middle; Figure 6 for Figure 3Enlarged view of point E in the middle; Figure 7 A schematic structural diagram of a connecting pipe of the present invention; Figure 8 for Figure 2 Schematic diagram of the cross-sectional structure in the middle BB direction; Fig. 9 for Figure 8 The enlarged view of F in the middle; Fig.10 for Figure 8 Enlarged view of point G in the middle.

[0017] In the figure: 1, heat exchange flue; 11, heat insulation cover; 111, inclined plane 1; 112, inclined plane 2; 12, heat exchange cover; 121, chamber; 122, water inlet pipe; 123, drain pipe; 124, spiral partition; 13, connecting block; 14, fixing cylinder; 141, smoke inlet pipe; 142, limiting groove; 2, cleaning assembly; 21, connecting pipe; 211, through hole 1; 212, through hole 2; 213, inclined slot 1; 214, through hole 3; 22. Guide groove; 23. Spline groove; 24. Cam shaft; 25. Scraper; 26. Spline sleeve; 27. Hydraulic rod; 28. Slag discharge cover; 29. ​​Connecting ring; 3. Dust removal assembly; 31. Collection tank; 32. Push rod; 33. Elastic sealing block one; 4. Isolation assembly; 41. Splitting ring; 42. Cross bar; 43. Groove; 5. Adjustment assembly; 51. Fixing rod; 52. Elastic sealing block two; 6. Stainless steel fiber filter plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figures 1 to 9 As shown, the present invention provides a boiler flue heat exchange dust collector, including a heat exchange flue 1, the heat exchange flue 1 includes a heat insulation cover 11 and a heat exchange cover 12 installed inside the heat insulation cover 11, a fixing cylinder 14 is arranged at the bottom of the heat insulation cover 11, a connecting block 13 for connecting the fixing cylinder 14 and the heat insulation cover 11 is fixedly connected in a circumferential array at the bottom of the heat insulation cover 11, a water inlet pipe 122 and a drain pipe 123 are respectively connected at the top and bottom of the heat insulation cover 11, and a portion between the inner wall of the heat insulation cover 11 and the inner wall of the heat exchange cover 12 is a chamber 121, and further includes: a cleaning component 2, which is arranged at the bottom of the heat exchange flue 1; an isolation component 4, which is installed at the bottom of the heat exchange flue 1 and used for sealing when slag is discharged from the bottom of the heat insulation cover 11; The cleaning assembly 2 includes a connecting pipe 21 movably connected to the inside of the fixed cylinder 14, a guide groove 22 is provided on the connecting pipe 21, a spline sleeve 26, a through hole 1 211, a through hole 212 and an inclined groove 1 213 are provided on the connecting pipe 21, a spline sleeve 26 matching the spline groove 23 is movably sleeved on the outside of the connecting pipe 21, a scraper 25 in contact with the inner wall of the heat exchange cover 12 is fixedly connected to the outer circumferential array of the spline sleeve 26, a convex shaft 24 that can slide in the guide groove 22 is fixedly connected to the inner wall of the fixed cylinder 14, a connecting ring 29 located below the fixed cylinder 14 is also connected to the bottom of the connecting pipe 21 with a bearing, a hydraulic rod 27 with an output end fixedly connected to the connecting ring 29 is provided at the bottom of the fixed cylinder 14, a slag discharge cover 28 that can communicate with the gap between the fixed cylinder 14 and the bottom of the heat insulation cover 11 is also provided at the bottom of the heat insulation cover 11, and the outer layer and inner layer of the slag discharge cover 28 are respectively fixedly connected to the bottom of the heat insulation cover 11 and the fixed cylinder 14; The fixed cylinder 14 is provided with a limiting groove 142, and the bottom of the fixed cylinder 14 is fixedly connected with a smoke inlet pipe 141, which is connected with the inner cavity of the heat exchange cover 12 through the through hole 1 211, the connecting pipe 21 and the through hole 212; The guide groove 22 is divided into two parts, a vertical part and an inclined part. In the initial state, the convex shaft 24 is at the bottom end of the vertical part of the guide groove 22; A stainless steel fiber filter plate 6 is fixedly connected to the top of the heat exchange cover 12; the top of the scraper 25 is horizontal and can contact the bottom of the stainless steel fiber filter plate 6; By adopting the above scheme, the connecting ring 29 is pushed downward by running the hydraulic rod 27 to drive the connecting pipe 21 and the guide groove 22, so that the guide groove 22 slides from the vertical part of the guide groove 22 to the inclined part, and then the inclined part of the guide groove 22 is limited by the convex shaft 24 to rotate the connecting pipe 21. Further, the connecting pipe 21 drives the spline sleeve 26 and the scraper 25 to rotate through the spline groove 23, so that the scraper 25 scrapes off the dust particles attached to the inner wall of the heat exchange cover 12. At the same time, the top of the scraper 25 also cleans the bottom of the stainless steel fiber filter plate 6, and the scraped ash will enter the slag discharge cover 28 through the bottom of the heat insulation cover 11 and be discharged, thereby solving the problem that too much dust particles attached to the heat exchange flue 1 will reduce the heat exchange efficiency of the flue.

[0020] like Figure 3 , Figure 4 and Figure 7-Figure 9 As shown, the isolation assembly 4 includes a split ring 41 movably sleeved on the outside of the fixed cylinder 14, and the inner wall of the split ring 41 is fixedly connected with a cross bar 42 that can slide in the limit groove 142, and one end of the cross bar 42 can slide in the inclined groove 213, and the split ring 41 is also provided with a groove 43 for covering the connection block 13 when descending; The heat shield 11 is also provided with an inclined surface 111 and an inclined surface 112 which respectively cooperate with the upper inclined surface and the lower inclined surface of the split ring 41 to seal. The slope and length of the inclined portion of the guide groove 22 are equal to those of the inclined groove 1 213, and the width of the inclined groove 1 213 is greater than the width of the guide groove 22; By adopting the above scheme, when the convex shaft 24 moves along the vertical part of the guide groove 22, the bottom end of the inclined part on the inclined groove 1 213 will force the cross bar 42 to move downward, so that the upper inclined surface of the split ring 41 is released from contact with the inclined surface 1 111, and at the same time, the lower inclined surface of the split ring 41 is contacted with the inclined surface 2 112 and the bottom of the heat exchange flue 1 is sealed, and then the ash scraped off by the scraper 25 will be stored at the bottom of the heat insulation cover 11. Then, when the device is reset, the split ring 41 moves upward and the upper inclined surface of the split ring 41 is contacted with the inclined surface 1 111, and the ash will enter the slag discharge cover 28 along the inclined surface 2 112 and be discharged from the bottom of the slag discharge cover 28, thereby avoiding the scraper 25 from cleaning the ash on the inner wall of the heat exchange cover 12 and ensuring the sealing of the bottom of the heat insulation cover 11.

[0021] like Figure 2 , Figure 6 and Figure 8 As shown, the gap between the inner wall of the heat insulation cover 11 and the inner wall of the heat exchange cover 12 decreases from top to bottom; a spiral partition 124 is fixedly connected between the inner wall of the heat insulation cover 11 and the inner wall of the heat exchange cover 12, and the spiral partition 124 divides the chamber 121 into a spiral channel, and the pitch of the spiral partition 124 increases from top to bottom; By adopting the above solution, the design of the chamber 121 and the spiral baffle 124 can increase the time for the water source to exchange heat with the heat exchange cover 12, so as to improve the efficiency of the flue gas heat exchange process.

[0022] like Figure 3 , Figure 4 , Figure 6-Figure 8 and Fig.10 As shown, the heat exchange cover 12 is fixedly connected with an adjustment component 5 for sealing the middle of the connecting pipe 21; the adjustment component 5 includes a fixing rod 51 fixedly connected to the top of the heat exchange cover 12 and located above the stainless steel fiber filter plate 6, the bottom end of the fixing rod 51 passes through the stainless steel fiber filter plate 6 and the top of the connecting pipe 21 and extends to the middle of the connecting pipe 21, the bottom end of the fixing rod 51 is elastically supported with an elastic sealing block 2 52, and a through hole 3 214 is provided in a circumferential array on the top of the connecting pipe 21. In the initial state, the bottom of the elastic sealing block 2 52 abuts against the middle of the connecting pipe 21 to separate the middle of the connecting pipe 21; When the connecting tube 21 moves downward and the convex shaft 24 moves to the bent part of the guide groove 22, the second elastic sealing block 52 releases the separation of the middle part of the connecting tube 21, and the second through hole 212 moves downward to the inside of the fixed tube 14 and is blocked; By adopting the above scheme, when the convex shaft 24 enters the bent part from the vertical part of the guide groove 22, the elastic sealing block 2 52 is in a natural state. When the convex shaft 24 continues to move, the elastic sealing block 2 52 will release the blockage of the middle part of the connecting pipe 21, and at the same time, the downward direction of the through hole 212 will be blocked by the fixed tube 14. At this time, the smoke at the smoke inlet pipe 141 will be blown downward through the through hole 3 214 at the top of the connecting pipe 21, avoiding the situation where a large amount of dust particles float upward when the scraper 25 scrapes off the ash on the heat exchange cover 12.

[0023] like Figure 1 , Figure 3 , Figure 5 , Figure 8 and Fig. 9 As shown, a dust removal assembly 3 for collecting waste residues attached to the inner wall of the connecting pipe 21 is fixedly connected to the bottom of the connecting pipe 21; the dust removal assembly 3 includes an elastic sealing block 33 elastically connected to the bottom of the connecting pipe 21 and located below the through hole 211, a collecting tank 31 is threadedly connected to the bottom of the connecting pipe 21, and a top rod 32 abutting against the elastic sealing block 33 in the initial state is fixedly connected to the bottom of the collecting tank 31; the elastic sealing block 33 can block the bottom of the connecting pipe 21 when it moves downward; By adopting the above scheme, when the convex shaft 24 moves along the inclined part of the guide groove 22 to force the connecting pipe 21 to rotate, the connecting pipe 21 will also vibrate, so that the ash attached to the inner wall of the connecting pipe 21 falls into the collecting tank 31. When the ash inside the collecting tank 31 needs to be cleaned, the collecting tank 31 is removed by rotation and the push rod 32 is also driven downward. At this time, the elastic sealing block 33 will block the bottom of the connecting pipe 21 under the action of its own elastic force, thereby preventing the smoke from being discharged through the bottom of the connecting pipe 21.

[0024] The working principle and use process of the present invention: During heat exchange, the flue gas 1 passes through the smoke inlet pipe 141, the through hole 1 211, and the through hole 212 in sequence into the heat exchange cover 12, and the water source enters the chamber 121 through the water inlet pipe 122, and is discharged from the drain pipe 123 after heat exchange through the heat exchange cover 12. The flue gas after heat exchange is filtered and purified by the stainless steel fiber filter plate 6, and then is transported to the next link through the top of the heat exchange cover 12; During dust removal, the connecting ring 29 is pushed downward by operating the hydraulic rod 27 to drive the connecting pipe 21 and the guide groove 22, and the spline sleeve 26 will slide in the spline groove 23 and keep the relative height unchanged. At the same time, the guide groove 22 will slide from the vertical part of the guide groove 22 to the inclined part, and then the inclined part of the guide groove 22 will be limited by the convex shaft 24 to rotate the connecting pipe 21. Further, the connecting pipe 21 will drive the spline sleeve 26 and the scraper 25 to rotate through the cooperation of the spline groove 23 and the spline sleeve 26, so that the scraper 25 scrapes off the dust particles attached to the inner wall of the heat exchange cover 12, and the top of the scraper 25 will also clean the bottom of the stainless steel fiber filter plate 6, and the scraped ash will enter the slag discharge cover 28 through the bottom of the heat insulation cover 11 and be discharged; When the convex shaft 24 moves along the vertical part of the guide groove 22, the bottom end of the inclined part on the inclined groove 1 213 forces the cross bar 42 to move downward, thereby releasing the upper inclined surface of the split ring 41 from contact with the inclined surface 1 111, and at the same time making the lower inclined surface of the split ring 41 contact with the inclined surface 2 112 and seal the bottom of the heat exchange flue 1, and then the ash scraped by the scraper 25 will be stored at the bottom of the heat insulation cover 11, and then when the device is reset, the split ring 41 moves upward and makes the upper inclined surface of the split ring 41 contact with the inclined surface 1 111, and the ash will enter the slag discharge cover 28 along the inclined surface 2 112 and be discharged from the bottom of the slag discharge cover 28, thereby avoiding the scraper 25 from cleaning the ash on the inner wall of the heat exchange cover 12, and ensuring the sealing of the bottom of the heat insulation cover 11; When the convex shaft 24 enters the bent part from the vertical part of the guide groove 22, the elastic sealing block 2 52 is in a natural state. When the convex shaft 24 continues to move, the elastic sealing block 2 52 will release the blockage of the middle part of the connecting pipe 21, and the downward direction of the through hole 212 will be blocked by the fixed cylinder 14. At this time, the smoke at the smoke inlet pipe 141 will be blown downward through the through hole 3 214 at the top of the connecting pipe 21, thereby preventing a large amount of dust particles from floating upward when the scraper 25 scrapes off the ash on the heat exchange cover 12. When the convex shaft 24 moves along the inclined part of the guide groove 22 and forces the connecting pipe 21 to rotate, the connecting pipe 21 will also vibrate, so that the ash attached to the inner wall of the connecting pipe 21 will fall into the collecting tank 31. When the ash inside the collecting tank 31 needs to be cleaned, the collecting tank 31 is removed by rotation, which will also drive the push rod 32 downward. At this time, the elastic sealing block 33 will block the bottom of the connecting pipe 21 under the action of its own elastic force, thereby preventing the smoke from being discharged through the bottom of the connecting pipe 21.

[0025] 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.

[0026] 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 boiler flue heat exchange dust collector, comprising a heat exchange flue (1), the heat exchange flue (1) comprising a heat insulation cover (11) and a heat exchange cover (12) installed inside the heat insulation cover (11), a fixing cylinder (14) being arranged at the bottom of the heat insulation cover (11), a connecting block (13) for connecting the fixing cylinder (14) and the heat insulation cover (11) being fixedly connected in a circumferential array at the bottom of the heat insulation cover (11), a water inlet pipe (122) and a drain pipe (123) being respectively connected at the top and the bottom of the heat insulation cover (11), a portion between the inner wall of the heat insulation cover (11) and the inner wall of the heat exchange cover (12) being a chamber (121), characterized in that: Also includes: A cleaning component (2) disposed at the bottom of the heat exchange flue (1); An isolation component (4) installed at the bottom of the heat exchange flue (1) and used for sealing the bottom of the heat insulation cover (11) when slag is discharged; The cleaning assembly (2) comprises a connecting pipe (21) movably connected to the interior of a fixed cylinder (14); a guide groove (22) is provided on the connecting pipe (21); a spline sleeve (26), a first through hole (211), a second through hole (212) and a first inclined groove (213) are provided on the connecting pipe (21); a spline sleeve (26) matching the spline groove (23) is movably sleeved on the exterior of the connecting pipe (21); a scraper (25) in contact with the inner wall of the heat exchange cover (12) is fixedly connected to the outer circumference of the spline sleeve (26); and a guide groove (22) is provided on the connecting pipe (21); and a guide groove (22) is provided on the connecting pipe (21); and a guide groove (22) is provided on the inner wall of the fixed cylinder (14). The wall is fixedly connected with a convex shaft (24) capable of sliding in the guide groove (22); the bottom of the connecting pipe (21) is also bearing-connected with a connecting ring (29) located below the fixed cylinder (14); the bottom of the fixed cylinder (14) is provided with a hydraulic rod (27) whose output end is fixedly connected to the connecting ring (29); the bottom of the heat insulation cover (11) is also provided with a slag discharge cover (28) capable of communicating with the gap between the fixed cylinder (14) and the bottom of the heat insulation cover (11); the outer layer and the inner layer of the slag discharge cover (28) are respectively fixedly connected to the bottom of the heat insulation cover (11) and the fixed cylinder (14); The fixed cylinder (14) is provided with a limiting groove (142), and the bottom of the fixed cylinder (14) is fixedly connected to a smoke inlet pipe (141), and the smoke inlet pipe (141) is connected to the inner cavity of the heat exchange cover (12) through the first through hole (211), the connecting pipe (21) and the second through hole (212); The guide groove (22) is divided into two parts, a vertical part and an inclined part. In an initial state, the convex shaft (24) is located at the bottom end of the vertical part of the guide groove (22).

2. The boiler flue heat exchange dust collector according to claim 1, characterized in that: The isolation assembly (4) comprises a split ring (41) movably sleeved on the outside of the fixed cylinder (14); a cross bar (42) capable of sliding in a limiting groove (142) is fixedly connected to the inner wall of the split ring (41); one end of the cross bar (42) is capable of sliding in an inclined groove (213); and a groove (43) for covering the connection block (13) when descending is formed on the split ring (41); The heat insulation cover (11) is also provided with a first inclined surface (111) and a second inclined surface (112) which respectively cooperate with the upper inclined surface and the lower inclined surface of the split ring (41) to seal.

3. The boiler flue heat exchange dust collector according to claim 2, characterized in that: The slope and length of the inclined portion of the guide groove (22) are equal to those of the inclined groove one (213), and the width of the inclined groove one (213) is greater than the width of the guide groove (22).

4. The boiler flue heat exchange dust collector according to claim 3, characterized in that: The gap between the inner wall of the heat insulation cover (11) and the inner wall of the heat exchange cover (12) decreases from top to bottom; A spiral partition (124) is fixedly connected between the inner wall of the heat insulation cover (11) and the inner wall of the heat exchange cover (12), the spiral partition (124) divides the chamber (121) into a spiral channel, and the pitch of the spiral partition (124) gradually increases from top to bottom.

5. The boiler flue heat exchange dust collector according to claim 4, characterized in that: A stainless steel fiber filter plate (6) is fixedly connected to the top of the heat exchange cover (12); The top of the scraper (25) is horizontal and can contact the bottom of the stainless steel fiber filter plate (6).

6. The boiler flue heat exchange dust collector according to claim 5, characterized in that: An adjustment component (5) for sealing the middle part of the connecting pipe (21) is fixedly connected to the heat exchange cover (12); The regulating assembly (5) comprises a fixing rod (51) fixedly connected to the top of the heat exchange cover (12) and located above the stainless steel fiber filter plate (6); the bottom end of the fixing rod (51) passes through the stainless steel fiber filter plate (6) and the top of the connecting pipe (21) and extends to the middle of the connecting pipe (21); the bottom end of the fixing rod (51) elastically supports a second elastic sealing block (52); a third through hole (214) is provided in a circumferential array at the top of the connecting pipe (21); in an initial state, the bottom of the second elastic sealing block (52) abuts against the middle of the connecting pipe (21) to separate the middle of the connecting pipe (21).

7. The boiler flue heat exchange dust collector according to claim 6, characterized in that: When the connecting tube (21) moves downward and the convex shaft (24) moves to the bent portion of the guide groove (22), the second elastic sealing block (52) releases the separation of the middle portion of the connecting tube (21), and the second through hole (212) moves downward to the inside of the fixed tube (14) and is blocked.

8. The boiler flue heat exchange dust collector according to claim 7, characterized in that: A dust removal component (3) for collecting waste residue attached to the inner wall of the connecting pipe (21) is fixedly connected to the bottom of the connecting pipe (21).

9. The boiler flue heat exchange dust collector according to claim 8, characterized in that: The dust removal assembly (3) comprises an elastic sealing block (33) elastically connected to the bottom of the connecting pipe (21) and located below the through hole (211); the bottom of the connecting pipe (21) is threadedly connected to a collecting tank (31); the bottom of the collecting tank (31) is fixedly connected to a top rod (32) which abuts against the elastic sealing block (33) in an initial state; The elastic sealing block 1 (33) can seal the bottom of the connecting pipe (21) when it moves downward.

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