Heat exchange device with cleaning mechanism for dyeing machine

Abstract

The invention relates to a dyeing machine heat exchange device with a cleaning mechanism, which comprises a smoke tube and an outer tube, the outer tube sleeves the outer side of the smoke tube, the outer tube is internally provided with a heat exchange mechanism, the heat exchange mechanism comprises a heat exchange tube and a heat return tube, the heat exchange tube sleeves the outer side of the smoke tube, the heat return tube is communicated with the heat exchange tube, and the inner side of the outer tube is provided with a cleaning assembly. The cleaning assembly comprises a brush plate and a reciprocating driving mechanism, the brush plate is slidably mounted in the outer pipe, the reciprocating driving mechanism is arranged in the outer pipe, a cleaning frame is rotatably mounted in the smoke pipe, and a driving part is arranged on the outer pipe; when the heat exchange device needs to be cleaned, the driving piece drives the cleaning frame to clean the inner side wall of the smoke pipe, the reciprocating driving mechanism drives the brush plate to slide in a reciprocating mode to clean the outer side wall of the heat return pipe and the outer side wall of the heat exchange pipe, and the heat exchange device has the effect of reducing the probability of scale deposition on the side wall of the pipeline during smoke conveying.

Description

Technical Field

[0001] The present application relates to the field of heat exchange devices for dyeing machines, and in particular to a heat exchange device for dyeing machines with a cleaning mechanism. Background Art

[0002] A dyeing machine is a device used for dyeing textiles, which can apply dyes evenly to textiles to achieve a dyeing effect.

[0003] The dyeing machine usually consists of a dyeing tank, a circulation system, a control system and a heating system. When working, the textile to be dyed is placed in the dyeing tank, and an appropriate amount of dye and auxiliaries are added. The heating system is started, and the dye and textile in the dyeing tank are heated to a certain temperature. The circulation system is started to spray the dye evenly onto the textile. At the same time, various parameters are adjusted through the control system to ensure the stability and effect of the dyeing process. When the dyeing is completed, the heating system is turned off and the cooling device is started to cool the dyeing tank.

[0004] When natural gas is used to heat dye liquid water, the flue gas discharged from the combustion has a high temperature and heat. Directly discharging it for tail gas treatment will cause energy waste and require heat recovery. Usually, the flue pipe and the heat exchange medium are in contact in the water exchange water tank for heat exchange. After the flue gas is transported in the pipeline for a long time, it is easy to accumulate dust and even scale on the side wall of the pipeline, and the heat exchange area will decrease, which will lead to reduced heat exchange efficiency and poor heat exchange effect. Summary of the invention

[0005] In order to solve the problem that smoke is easily accumulated and even scaled after being introduced for a period of time, resulting in reduced heat exchange efficiency, the present application provides a heat exchange device for a dyeing machine with a cleaning mechanism.

[0006] The present application provides a heat exchange device for a dyeing machine with a cleaning mechanism, which adopts the following technical solution: A heat exchange device for a dyeing machine with a cleaning mechanism comprises a smoke pipe and an outer pipe, the outer pipe is sleeved on the outside of the smoke pipe and coaxially distributed with the smoke pipe, a hollow air groove is arranged in the outer pipe, one end of the smoke pipe is connected with the outer pipe at the air groove, a smoke exhaust port is arranged on the outer pipe, a heat exchange mechanism is arranged in the outer pipe, the heat exchange mechanism comprises a heat exchange pipe and a heat recovery pipe, the heat exchange pipe is sleeved on the outside of the smoke pipe, a water inlet is arranged on the heat exchange pipe, the heat recovery pipe is connected with the heat exchange pipe, a water outlet is arranged on the heat recovery pipe, and the heat exchange mechanism comprises a heat exchange pipe and a heat recovery pipe. There are several heat recovery tubes and they are distributed parallel to the smoke tube. A cleaning assembly is arranged on the inner side of the outer tube. The cleaning assembly includes a brush plate and a reciprocating drive mechanism. The brush plate is slidably installed in the outer tube along the length direction of the smoke tube. The brush plate is in contact with the heat recovery tube and the outer side wall of the heat exchange tube. The reciprocating drive mechanism is arranged in the outer tube and drives the cleaning plate to slide. A cleaning frame for cleaning the inner side wall of the smoke tube is rotatably installed in the smoke tube, and a driving member for driving the cleaning frame to rotate is arranged on the outer tube.

[0007] By adopting the above technical scheme, the flue gas is transported through the smoke pipe, transported through the air groove in the outer pipe, and discharged through the smoke exhaust port. At the same time, water enters the heat exchange tube through the water inlet and exchanges heat with the hot flue gas in the smoke pipe, and is transported out through the heat recovery pipe. When the heat exchange device needs to be cleaned, the driving member drives the cleaning frame to clean the inner wall of the smoke pipe, and the reciprocating driving mechanism drives the brush plate to slide back and forth to clean the outer wall of the heat recovery pipe and the heat exchange tube, thereby reducing the probability of scale accumulation on the side wall of the pipe during smoke transportation and ensuring the heat exchange effect of the heat exchange device.

[0008] Optionally, the reciprocating drive mechanism includes a reciprocating screw and a guide rod, the reciprocating screw is rotatably installed in the outer tube and is distributed parallel to the smoke tube, the reciprocating screw is connected to the driving member via a connecting member, the brush plate is threadedly connected to the reciprocating screw, the guide rod is arranged in the outer tube and is distributed parallel to the reciprocating screw, and the brush plate and the guide rod are slidingly connected.

[0009] By adopting the above technical solution, the driving part drives the reciprocating screw to rotate through the connecting part, drives the brush plate to slide, and the brush plate is limited by the guide rod. When the brush plate moves, the outer wall of the heat recovery tube and the heat exchange tube is cleaned, and the brush plate and the cleaning frame are driven synchronously for cleaning, and the driving operation is convenient.

[0010] Optionally, the cleaning frame includes a rotating rod and a cleaning scraper, the rotating rod is rotatably installed in the outer tube and is located on the inner side of the smoke tube, the driving member drives the rotating rod to rotate, the rotating rod is coaxially distributed with the smoke tube, the cleaning scraper is arranged on the outer circumferential wall of the rotating rod and is distributed parallel to the rotating rod, and one side of the cleaning scraper is in contact with the inner wall of the smoke tube.

[0011] By adopting the above technical solution, the driving member drives the rotating rod to rotate and then drives the cleaning scraper to rotate, so as to clean the inner wall of the smoke pipe and reduce the probability of scale accumulation on the inner wall of the smoke pipe.

[0012] Optionally, the driving member includes a driving motor, the rotating rod is connected to the output shaft of the driving motor, a hollow fixed plate is provided at one end of the heat exchange tube, the fixed plate is annularly sleeved on the outside of the smoke pipe, the heat recovery tube is connected to the fixed plate, the outer tube is located on one side of the fixed plate and is provided with a buffer groove connected to the smoke pipe, the outer tube is located at the buffer groove and is provided with a rotating frame, the rotating axis of the rotating frame is coaxially distributed with the rotating rod, a connecting strip is provided on the rotating frame, the connecting strip is in contact with the circumferential inner wall of the outer tube, and the rotating rod is provided with a second scraper in contact with one side of the fixed plate.

[0013] By adopting the above technical solution, the heat exchange tube and the heat recovery tube are connected by a fixed plate. The smoke from the smoke pipe is transported through the buffer groove and then delivered to the gas groove of the outer tube for heat exchange. The driving motor drives the rotating rod and the rotating frame to rotate. The rotating frame drives the connecting bar to rotate to clean the circumferential inner wall of the buffer groove of the outer tube. The second scraper cleans one side of the fixed plate to reduce the probability of fouling.

[0014] Optionally, the connecting member includes a ring gear and a gear, the ring gear is arranged at one end of the rotating frame, the ring gear is coaxially distributed with the rotating frame, the gear is rotatably installed on the inner side of the outer tube, the gear is coaxially connected to the reciprocating screw, and the gear is meshed with one side of the ring gear.

[0015] By adopting the above technical solution, when the rotating frame rotates, it drives the ring gear to rotate, and the ring gear drives the meshing gears to rotate synchronously, driving the reciprocating screw to rotate, synchronously driving the rotating rod and the reciprocating screw, and the driving operation is convenient.

[0016] Optionally, the brush plates are distributed in a fan shape, and two brush plates are provided and distributed up and down to form a circular ring, and the upper and lower brush plates are staggered.

[0017] By adopting the above technical solution, the fan-shaped brush plates on the upper and lower sides form a ring shape to ensure the cleaning area. The staggered brush plates are arranged to ensure that the air grooves in the outer tube are unobstructed, and cleaning can also be performed during normal heat exchange.

[0018] Optionally, a first brush plate is provided on the brush plate on the inner arc side of the fan shape, the first brush plate is distributed along the circumferential direction of the heat exchange tube, bristles are provided on the first brush plate along its length direction, a sliding rod is provided on the brush plate, the sliding rod is distributed along the axial direction of the heat exchange tube, the first brush plate and the sliding rod are slidingly connected, and springs are sleeved on the sliding rod and on both sides of the first brush plate.

[0019] By adopting the above technical solution, when the brush plate moves, the bristles on the first brush plate clean the circumferential outer wall of the heat exchange tube. The springs on both sides of the first brush plate are elastically connected. When the brush plate moves, it is pushed by the elasticity of the springs on both sides to produce shaking, thereby reducing the probability of the bristles on the first brush plate being attached to debris.

[0020] Optionally, the brush plate is provided with a second brush plate on one side of the outer arc of the sector, the second brush plate is distributed along the circumferential direction of the outer tube, the second brush plate is provided with bristles along its length direction, a sliding rod is provided on the brush plate, the sliding rod is distributed along the axial direction of the outer tube, the second brush plate is slidably connected to the sliding rod, and springs are sleeved on the sliding rod and on the opposite sides of the second brush plate.

[0021] By adopting the above technical solution, when the brush plate moves, the bristles on the second brush plate clean the circumferential inner wall of the outer tube, and simultaneously clean the inner wall of the outer tube while cleaning the heat exchange tube and the heat recovery tube. The springs on both sides of the second brush plate are elastically connected, and when the brush plate moves, it is pushed by the elasticity of the springs on both sides to produce shaking, thereby reducing the probability of the bristles on the second brush plate being attached to debris.

[0022] Optionally, a through hole is formed on the brush plate for the heat recovery pipe to pass through, and a cleaning ring is provided on the heat recovery pipe at the through hole, and an inner ring side wall of the cleaning ring is in contact with the side wall of the heat recovery pipe.

[0023] By adopting the above technical solution, when the brush plate moves, the cleaning ring on the brush plate cleans the outer wall of the heat recovery pipe, thereby reducing the probability of dust and scale accumulation.

[0024] Optionally, an end waste port is provided on the outer side wall of the outer tube at the buffer tank, and an air tank waste port is provided on the outer side wall of the outer tube at the air tank.

[0025] By adopting the above technical solution, impurities brushed off in the gas tank are discharged through the gas tank waste port, and impurities in the smoke pipe are blown to the buffer tank by the smoke and discharged from the end waste port, thereby reducing the problem of impurity accumulation and difficulty in handling.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting up cleaning components and cleaning racks, the outer walls of the heat exchange tubes and heat recovery tubes and the inner walls of the smoke tubes are cleaned respectively, which reduces the probability of scale accumulation on the side walls of the pipes during smoke transportation and ensures the long-term and efficient operation of the heat exchange device; 2. The linkage design of the reciprocating drive mechanism and the drive member enables the brush plate and the cleaning frame to move synchronously, which improves the cleaning efficiency, simplifies the operation process and reduces the maintenance cost; 3. The first bristle plate and the second bristle plate on the brush plate and their spring connection ensure the effective movement and cleaning of the bristles inside the outer tube, while reducing the possibility of debris being attached to the bristles, further improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional structural schematic diagram of this application.

[0028] Figure 2 It is a cross-sectional view along the axial direction of the smoke tube of the present application.

[0029] Figure 3 It is a schematic diagram of the three-dimensional structure inside the outer tube of the present application.

[0030] Figure 4 It is a schematic diagram of the three-dimensional structure in which the outer tube of the present application is located inside one side of the buffer tank.

[0031] Figure 5 It is a cross-sectional view of the outer tube of the present application along the cross-sectional direction.

[0032] Figure 6 It is a schematic diagram of the enlarged three-dimensional structure of part A of the present application.

[0033] Those skilled in the art will appreciate that elements in the drawings are illustrated for simplicity and clarity and are not necessarily drawn to scale. For example, the size and position of some elements in the drawings may be exaggerated relative to other elements to help improve understanding of embodiments of the present invention.

[0034] 1. Smoke pipe; 11. Cleaning frame; 12. Rotating rod; 121. Second scraper; 13. Cleaning scraper; 14. Driving motor; 2. Outer tube; 21. Air trough; 22. Smoke outlet; 23. Buffer trough; 24. Rotating frame; 25. Connecting strip; 26. End waste outlet; 27. Air trough waste outlet; 3. Heat exchange mechanism; 31. Heat exchange tube; 311. Water inlet; 32. Heat recovery tube; 321. Water outlet; 33. Fixed plate; 4. Brush plate; 41. First brush plate; 42. Sliding rod; 43. Spring; 44. Second brush plate; 45. Cleaning sleeve; 5. Reciprocating drive mechanism; 51. Reciprocating screw rod; 52. Guide rod; 6. Connecting piece; 61. Gear ring; 62. Gear. DETAILED DESCRIPTION

[0035] The present application is further described in detail below in conjunction with the accompanying drawings.

[0036] The present application embodiment discloses a heat exchange device for a dyeing machine with a cleaning mechanism, referring to Figure 1 and Figure 2 , including a smoke pipe 1 and an outer pipe 2. The outer pipe 2 is sleeved on the outside of the smoke pipe 1 and coaxially distributed with the smoke pipe 1. A hollow air groove 21 is arranged in the outer pipe 2. One end of the smoke pipe 1 is connected with the outer pipe 2 at the air groove 21. A smoke exhaust port 22 is arranged on the outer pipe 2. The smoke is transported through the smoke pipe 1, transported through the air groove 21 in the outer pipe 2, and discharged through the smoke exhaust port 22.

[0037] Reference Figure 1 and Figure 2 A heat exchange mechanism 3 is arranged in the outer tube 2, and the heat exchange mechanism 3 includes a heat exchange tube 31 and a heat recovery tube 32. The heat exchange tube 31 is sleeved on the outside of the smoke tube 1, and a water inlet 311 is arranged at one end of the heat exchange tube 31. A hollow fixing plate 33 is arranged at the end of the heat exchange tube 31 away from the water inlet 311. The fixing plate 33 is annular and covers the circumferential outer wall of the smoke tube 1. The fixing plate 33 and the heat exchange plate are arranged perpendicular to each other. A plurality of heat recovery tubes 32 are arranged and are arranged parallel to the smoke tube 1. One end of the heat recovery tube 32 is connected to the fixing plate 33. The end of the heat recovery tube 32 away from the fixing plate 33 and located at the outer tube 2 is provided with a water outlet 321. Water enters the heat exchange tube 31 through the water inlet 311 to exchange heat with the hot flue gas of the smoke tube 1, and is transported through the heat recovery tube 32. It is sent out after secondary heat exchange with the flue gas in the outer tube 2 at the heat recovery tube 32.

[0038] Reference Figure 2 A cleaning assembly is arranged inside the outer tube 2, and the cleaning assembly includes a brush plate 4 and a reciprocating drive mechanism 5. The brush plate 4 is slidably installed at the gas groove 21 inside the outer tube 2 along the length direction of the smoke tube 1. The brush plate 4 is in contact with the outer wall of the heat recovery tube 32 and the heat exchange tube 31. The reciprocating drive mechanism 5 is arranged inside the outer tube 2. The reciprocating drive mechanism 5 drives the cleaning plate to slide. A cleaning rack 11 is rotatably installed inside the smoke tube 1. The cleaning rack 11 cleans the inner wall of the smoke tube 1. A driving member is arranged on the outer tube 2. When the heat exchange device needs to be cleaned, the driving member drives the cleaning rack 11 to clean the inner wall of the smoke tube 1, and the reciprocating drive mechanism 5 drives the brush plate 4 to slide back and forth to clean the outer wall of the heat recovery tube 32 and the heat exchange tube 31, thereby reducing the probability of scale accumulation on the side wall of the pipe during smoke transportation and ensuring the heat exchange effect of the heat exchange device.

[0039] Reference Figure 2 and Figure 3The cleaning frame 11 includes a rotating rod 12 and a cleaning scraper 13. The rotating rod 12 is rotatably mounted in the outer tube 2 and is located inside the smoke tube 1. The rotating rod 12 is coaxially distributed with the smoke tube 1. The cleaning scraper 13 is arranged on the rotating rod 12 and is parallel to the rotating rod 12. There are a plurality of cleaning scrapers 13 and they are evenly arranged along the circumferential direction of the rotating rod 12. The side of the cleaning scraper 13 facing away from the rotating rod 12 is in contact with the inner wall of the smoke tube 1. The driving member includes a driving motor 14. The rotating rod 12 is connected to the output shaft of the driving motor 14. The driving motor 14 drives the rotating rod 12 to rotate and then drives the cleaning scraper 13 to rotate, so as to clean the inner wall of the smoke tube 1.

[0040] Reference Figure 3 and Figure 4 The outer tube 2 is provided with a buffer groove 23 connected to the smoke pipe 1 on one side of the fixed plate 33. A passage for smoke to pass through is left between the fixed plate 33 and the inner side wall of the outer tube 2. After being transported through the buffer groove 23, the smoke of the smoke pipe 1 is transported to the gas groove 21 of the outer tube 2 for heat exchange. The outer tube 2 is provided with a rotating frame 24 at the buffer groove 23. The rotating axis of the rotating frame 24 is coaxially distributed with the rotating rod 12. The rotating frame 24 is provided with a connecting bar 25 that is parallel to the rotating rod 12. The connecting bar 25 is in contact with the circumferential inner side wall of the outer tube 2. The driving motor 14 drives the rotating rod 12 and the rotating frame 24 to rotate. The rotating frame 24 drives the connecting bar 25 to rotate to clean the circumferential inner side wall of the buffer groove 23 of the outer tube 2. The rotating rod 12 is provided with a second scraper 121 that is perpendicular to the rotating rod 12. The second scraper 121 is in contact with one side of the fixed plate 33. The second scraper 121 cleans one side of the fixed plate 33.

[0041] Reference Figure 3 and Figure 4 The reciprocating drive mechanism 5 includes a reciprocating screw rod 51 and a guide rod 52. The reciprocating screw rod 51 is rotatably installed at the air groove 21 of the outer tube 2 and is parallel to the smoke tube 1. The brush plate 4 is threadedly connected to the reciprocating screw rod 51. The guide rod 52 is arranged in the outer tube 2 and is parallel to the reciprocating screw rod 51. The brush plate 4 is slidably connected to the guide rod 52. The reciprocating screw rod 51 rotates to drive the brush plate 4 to slide. The brush plate 4 is limited by the guide rod 52. When the brush plate 4 moves, the outer wall of the heat recovery tube 32 and the heat exchange tube 31 is cleaned.

[0042] Reference Figure 4A connecting member 6 is provided on one side of the rotating frame 24, and the connecting member 6 includes a ring gear 61 and a gear 62. The ring gear 61 is provided at one end of the rotating frame 24, and the ring gear 61 is coaxially distributed with the rotating frame 24. The gear 62 is rotatably installed on the fixed plate 33. The gear 62 is coaxially connected with the reciprocating screw rod 51, and the gear 62 is meshed with one side of the ring gear 61. When the rotating frame 24 rotates, the ring gear 61 is driven to rotate, and the ring gear 61 drives the meshing gear 62 to rotate synchronously, driving the reciprocating screw rod 51 to rotate, and synchronously driving the rotating rod 12 and the reciprocating screw rod 51 to rotate.

[0043] Reference Figure 5 and Figure 6 The brush plates 4 are fan-shaped, and two brush plates 4 are arranged and arranged up and down to form a circular ring. The upper and lower brush plates 4 are staggered, and the fan-shaped brush plates 4 on the upper and lower sides form a ring to ensure the cleaning area. The staggered brush plates 4 are arranged to ensure that the air groove 21 in the outer tube 2 is unobstructed, and cleaning can be performed during normal heat exchange.

[0044] Reference Figure 5 and Figure 6 The brush plate 4 is provided with a first brush plate 41 on the inner arc side of the fan shape. The first brush plate 41 is distributed along the circumferential direction of the heat exchange tube 31. Brushes are provided on the first brush plate 41 along its length direction. A sliding rod 42 is provided on the brush plate 4. The sliding rod 42 is distributed along the axial direction of the heat exchange tube 31. The first brush plate 41 is connected to the sliding rod 42 by sliding. The sliding rod 42 is provided with springs 43 on both sides of the first brush plate 41. When the brush plate 4 moves, the bristles on the first brush plate 41 clean the outer circumferential wall of the heat exchange tube 31. The springs 43 on both sides of the first brush plate 41 are elastically connected. When the brush plate 4 moves with the brush plate 4, it is elastically pushed by the springs 43 on both sides to produce shaking, thereby reducing the probability of debris attached to the bristles on the first brush plate 41.

[0045] Reference Figure 5 and Figure 6 The brush plate 4 is provided with a second brush plate 44 on one side of the outer arc of the fan shape. The second brush plate 44 is distributed along the circumferential direction of the outer tube 2. Brushes are provided on the second brush plate 44 along its length direction. A sliding rod 42 is provided on the brush plate 4. The sliding rod 42 is distributed along the axial direction of the outer tube 2. The second brush plate 44 is slidably connected with the sliding rod 42. Springs 43 are sleeved on the sliding rod 42 and on the opposite sides of the second brush plate 44. When the brush plate 4 moves, the bristles on the second brush plate 44 clean the inner side wall of the outer tube 2 around the circumference. While cleaning the heat exchange tube 31 and the heat recovery tube 32, the inner side wall of the outer tube 2 is cleaned synchronously. The springs 43 on both sides of the second brush plate 44 are elastically connected. When the brush plate 4 moves, it is elastically pushed by the springs 43 on both sides to produce shaking, thereby reducing the probability of debris attached to the bristles on the second brush plate 44.

[0046] Reference Figure 5 There are several heat recovery pipes 32 and they are parallel to each other. The brush plate 4 is provided with a through hole for the heat recovery pipe 32 to pass through. The heat recovery pipe 32 is provided with a cleaning collar 45 at the through hole. The inner side wall of the cleaning collar 45 is in contact with the side wall of the heat recovery pipe 32. When the brush plate 4 moves, the cleaning collar 45 on the brush plate 4 cleans the outer side wall of the heat recovery pipe 32 to reduce the probability of dust and dirt accumulation.

[0047] Reference Figure 1 and Figure 2 An end waste port 26 is provided on the outer wall of the outer tube 2 at the buffer groove 23, and an air groove waste port 27 is provided on the outer wall of the outer tube 2 at the air groove 21. Both waste ports are closed during daily use. When impurities need to be discharged, the impurities brushed off in the air groove 21 are discharged through the air groove waste port 27, and the impurities in the smoke pipe 1 are blown to the buffer groove 23 by the flue gas and discharged through the end waste port 26, thereby reducing the problem of impurity accumulation and difficulty in handling.

[0048] The implementation principle of the heat exchange device for a dyeing machine with a cleaning mechanism in the embodiment of the present application is as follows: the smoke is transported through the smoke pipe 1, transported through the gas groove 21 of the outer pipe 2, and discharged through the smoke outlet 22. Water enters the heat exchange tube 31 through the water inlet 311 to exchange heat with the hot smoke of the smoke pipe 1, is transported through the heat recovery pipe 32, and is sent out after a secondary heat exchange with the smoke in the outer pipe 2 at the heat recovery pipe 32. When it is necessary to clean the heat exchange device, the driving motor 14 drives the rotating frame 24 to rotate and drive the cleaning frame 11 to clean the inner wall of the smoke pipe 1. At the same time, the gear ring 61 drives the gear 62 to rotate and drive the reciprocating screw 51 to rotate, driving the brush plate 4 to slide back and forth to clean the outer wall of the heat recovery pipe 32 and the heat exchange pipe 31, thereby reducing the probability of scale accumulation on the side wall of the pipe during smoke transportation.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A heat exchange device for a dyeing machine with a cleaning mechanism, comprising a smoke tube (1) and an outer tube (2), wherein the outer tube (2) is sleeved on the outside of the smoke tube (1) and is coaxially distributed with the smoke tube (1), a hollow gas groove (21) is arranged in the outer tube (2), one end of the smoke tube (1) is connected to the outer tube (2) at the gas groove (21), a smoke exhaust port (22) is arranged on the outer tube (2), and a heat exchange mechanism (3) is arranged in the outer tube (2). ), the heat exchange mechanism (3) comprises a heat exchange tube (31) and a heat return tube (32), the heat exchange tube (31) is sleeved on the outside of the smoke tube (1), the heat exchange tube (31) is provided with a water inlet (311), the heat return tube (32) is communicated with the heat exchange tube (31), the heat return tube (32) is provided with a water outlet (321), a plurality of heat return tubes (32) are provided and are distributed parallel to the smoke tube (1), and the characteristics are: A cleaning assembly is arranged on the inner side of the outer tube (2), the cleaning assembly comprising a brush plate (4) and a reciprocating drive mechanism (5); the brush plate (4) is slidably mounted in the outer tube (2) along the length direction of the smoke tube (1); the brush plate (4) is in contact with the outer side walls of the heat recovery tube (32) and the heat exchange tube (31); the reciprocating drive mechanism (5) is arranged in the outer tube (2) and drives the cleaning plate to slide; a cleaning frame (11) for cleaning the inner side wall of the smoke tube (1) is rotatably mounted in the smoke tube (1); and a driving member for driving the cleaning frame (11) to rotate is arranged on the outer tube (2).

2. A heat exchange device for a dyeing machine with a cleaning mechanism according to claim 1, characterized in that: The reciprocating drive mechanism (5) comprises a reciprocating screw (51) and a guide rod (52); the reciprocating screw (51) is rotatably mounted in the outer tube (2) and is arranged parallel to the smoke tube (1); the reciprocating screw (51) is connected to the drive member via a connecting member (6); the brush plate (4) and the reciprocating screw (51) are threadedly connected; the guide rod (52) is arranged in the outer tube (2) and is arranged parallel to the reciprocating screw (51); the brush plate (4) and the guide rod (52) are slidably connected.

3. A heat exchange device for a dyeing machine with a cleaning mechanism according to claim 2, characterized in that: The cleaning frame (11) comprises a rotating rod (12) and a cleaning scraper (13); the rotating rod (12) is rotatably mounted in the outer tube (2) and is located inside the smoke tube (1); the driving member drives the rotating rod (12) to rotate; the rotating rod (12) and the smoke tube (1) are coaxially arranged; the cleaning scraper (13) is arranged on the outer circumferential wall of the rotating rod (12) and is parallel to the rotating rod (12); one side of the cleaning scraper (13) is in contact with the inner wall of the smoke tube (1).

4. A heat exchange device for a dyeing machine with a cleaning mechanism according to claim 3, characterized in that: The driving member comprises a driving motor (14); the rotating rod (12) is connected to the output shaft of the driving motor (14); a hollow fixing plate (33) is provided at one end of the heat exchange tube (31); the fixing plate (33) is annularly sleeved on the outside of the smoke tube (1); the heat recovery tube (32) is connected to the fixing plate (33); a buffer groove (23) communicating with the smoke tube (1) is provided on one side of the fixing plate (33) of the outer tube (2); a rotating frame (24) is provided at the buffer groove (23) of the outer tube (2); the rotating axis of the rotating frame (24) is coaxially distributed with the rotating rod (12); a connecting strip (25) is provided on the rotating frame (24); the connecting strip (25) is in contact with the circumferential inner wall of the outer tube (2); and a second scraper (121) in contact with one side of the fixing plate (33) is provided on the rotating rod (12).

5. A heat exchange device for a dyeing machine with a cleaning mechanism according to claim 4, characterized in that: The connecting member (6) comprises a gear ring (61) and a gear (62); the gear ring (61) is arranged at one end of the rotating frame (24); the gear ring (61) and the rotating frame (24) are coaxially distributed; the gear (62) is rotatably mounted on the inner side of the outer tube (2); the gear (62) is coaxially connected to the reciprocating screw (51); and the gear (62) meshes with one side of the gear ring (61).

6. A heat exchange device for a dyeing machine with a cleaning mechanism according to claim 1, characterized in that: The brush plates (4) are distributed in a fan shape, and two brush plates (4) are provided and are distributed up and down to form a circular ring shape, and the upper and lower brush plates (4) are staggered.

7. The heat exchange device for a dyeing machine with a cleaning mechanism according to claim 1, characterized in that: The brush plate (4) is provided with a first brush plate (41) on one side of the inner arc of the fan shape. The first brush plate (41) is distributed along the circumferential direction of the heat exchange tube (31). The first brush plate (41) is provided with bristles along its length direction. The brush plate (4) is provided with a sliding rod (42). The sliding rod (42) is distributed along the axial direction of the heat exchange tube (31). The first brush plate (41) and the sliding rod (42) are slidingly connected. Springs (43) are sleeved on the sliding rod (42) and on both side surfaces of the first brush plate (41).

8. The heat exchange device for a dyeing machine with a cleaning mechanism according to claim 1, characterized in that: The brush plate (4) is provided with a second brush plate (44) on one side of the outer arc of the sector. The second brush plate (44) is distributed along the circumferential direction of the outer tube (2). The second brush plate (44) is provided with bristles along its length direction. The brush plate (4) is provided with a sliding rod (42). The sliding rod (42) is distributed along the axial direction of the outer tube (2). The second brush plate (44) and the sliding rod (42) are slidingly connected. Springs (43) are sleeved on the sliding rod (42) and on two opposite side surfaces of the second brush plate (44).

9. A heat exchange device for a dyeing machine with a cleaning mechanism according to claim 1, characterized in that: The brush plate (4) is provided with a through hole for the heat recovery pipe (32) to pass through, and the heat recovery pipe (32) is provided with a cleaning collar (45) at the through hole, and the inner ring side wall of the cleaning collar (45) is in contact with the side wall of the heat recovery pipe (32).

10. A heat exchange device for a dyeing machine with a cleaning mechanism according to claim 4, characterized in that: An end waste port (26) is provided on the outer side wall of the outer tube (2) at the buffer tank (23), and an air tank waste port (27) is provided on the outer side wall of the outer tube (2) at the air tank (21).

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