Heat exchange equipment prepared from sealant

Abstract

The invention discloses heat exchange equipment prepared from sealant, and relates to the technical field of heat exchange, the heat exchange equipment comprises a heat exchange pipeline, the two ends of the heat exchange pipeline are provided with connectors used for being connected with a heat exchange medium conveying pipeline respectively, and a heat exchange adjusting piece is coaxially arranged in a heat exchange cavity of the heat exchange pipeline; the cross section of a fluid channel in the heat exchange cavity can be flexibly changed, so that the requirements of materials with different viscosities or different reaction stages for heat exchange intensity in the sealant preparation process are met, dynamic and accurate temperature control is achieved, and secondly, when the diameter adjusting pipe moves to be attached to the inner wall of the end of the heat exchange pipeline, a closed annular channel can be formed between the diameter adjusting pipe and the cleaning inner pipe; and meanwhile, the switching piece is triggered to switch the heat exchange medium from the cleaning inner pipe to the annular channel, so that the turbulence degree and the heat exchange area of the heat exchange medium are effectively increased, the heat exchange efficiency is remarkably improved, local overheating or supercooling can be avoided through circumferential uniform flowing of the annular channel, and uniform reaction of sealant materials is ensured.

Description

Technical Field

[0001] This invention relates to the field of heat exchange technology, and in particular to a heat exchange device for the preparation of sealant. Background Technology

[0002] In the preparation of sealants, heat exchange equipment is the core device for ensuring precise control of reaction temperature and guaranteeing product quality and production efficiency. Traditional heat exchange equipment, such as conventional jacketed reactors or tubular heat exchangers, typically have fixed heat exchange areas and flow channel configurations, making it difficult to flexibly adapt to the dynamic heat exchange requirements arising from drastic changes in material viscosity and differences in exothermic reactions at different reaction stages during sealant synthesis. For example, during the peak of the polymerization reaction, if a large amount of reaction heat cannot be quickly removed, it can easily lead to localized temperature runaway, affecting the molecular weight distribution and final performance of the product. Conversely, during the low-temperature addition of curing agents, insufficient cooling efficiency may trigger pre-curing, leading to production failure.

[0003] In addition, sealant materials usually have high adhesion and curing properties, which can easily adhere to the inner wall of the heat exchange chamber and the surface of the components and gradually form scale, forming a heat insulation layer. This will not only significantly reduce heat exchange efficiency and increase energy consumption, but may also cause blockage of equipment flow channels, uneven heat transfer, and cross-contamination between batches. Summary of the Invention

[0004] The purpose of this invention is to provide a heat exchange device for sealant preparation, which has the ability to flexibly change the cross-section of the fluid channel in the heat exchange chamber, thereby adapting to the heat exchange intensity requirements of materials with different viscosities or different reaction stages in the sealant preparation process, and achieving dynamic and precise temperature control. It not only effectively increases the turbulence degree and heat exchange area of ​​the heat exchange medium and significantly improves the heat exchange efficiency, but also avoids local overheating or overcooling through the circumferential uniform flow of the annular channel, ensuring uniform reaction of the sealant material.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a heat exchange device for preparing sealant, comprising a heat exchange pipe, wherein both ends of the heat exchange pipe are respectively provided with interfaces for connecting to a heat exchange medium conveying pipe.

[0006] A heat exchange adjustment component is coaxially arranged inside the heat exchange chamber of the heat exchange pipe;

[0007] The heat exchange adjustment component includes an adjusting pipe, a pressing outer pipe, a cleaning inner pipe, and a driving component;

[0008] One end of the heat exchange pipe is provided with an inner sealing groove for accommodating the adjusting pipe and the pressing outer pipe;

[0009] The outer pressing tube is coaxially sleeved over the outside of the adjusting tube, and both the outer pressing tube and the adjusting tube are connected to the driving component for transmission.

[0010] The cleaning inner tube is coaxially arranged inside the heat exchange cavity, and the adjusting tube is movably sleeved over the outside of the cleaning inner tube;

[0011] One end of the cleaning inner tube is used to connect to the heat exchange medium, and the connection end is connected to the adjusting pipe through a conversion component;

[0012] The driving component is used to drive the adjusting pipe to move axially along the cleaning inner pipe in order to change the fluid channel in the heat exchange chamber.

[0013] When the adjusting pipe moves to fit against the inner wall of the end of the heat exchange pipe, a closed annular channel is formed between the adjusting pipe and the cleaning inner pipe. At the same time, the switching element is triggered to switch the heat exchange medium flowing through the cleaning inner pipe into the annular channel.

[0014] Furthermore, a clamping cavity for transporting the heat exchange medium is provided between the outer wall of the heat exchange pipe and the heat exchange cavity.

[0015] Furthermore, one end of the adjusting tube is connected to a movable plate, which is sleeved on the output shaft of the driving component.

[0016] Furthermore, one end of the pressing outer tube is sleeved on the output shaft of the drive component, and a threaded groove is provided on the output shaft of the drive component. One end of the pressing outer tube and the adjusting tube are respectively movably connected to the threaded groove.

[0017] Furthermore, a linkage ring is sleeved on the outer wall of one end of the adjusting pipe, and a locking groove is opened on the inner wall of the end of the pressing outer pipe away from the linkage ring, so that the linkage ring and the locking groove are movably locked.

[0018] Furthermore, the conversion component includes a connecting ring sleeved on one end of the cleaning inner tube, a vent groove formed in the connecting ring, and a first vent hole and a second vent hole formed on both ends of the connecting ring.

[0019] Furthermore, an air inlet is provided on one end face of the cleaning inner tube, which communicates with the second vent hole. One end of the cleaning inner tube is connected to an outer sealing plate via a rod. An air exchange hole is provided on the outer sealing plate that is movably overlapped with the first vent hole.

[0020] Furthermore, the docking ring is disposed between the outer sealing plate and the cleaning inner tube, and both ends of the docking ring are respectively sealed and fitted to the end face of the cleaning inner tube and the outer sealing plate.

[0021] Furthermore, a spiral groove is formed on the outer wall of the docking ring, and a linkage rod that movably engages with the spiral groove is installed on the inner wall of one end of the adjusting pipe.

[0022] Furthermore, the inner cleaning tube is equipped with a cleaning component, which includes a drive rod, an inner sleeve, a movable ring, a telescopic bracket a, a telescopic bracket b, and a cleaning scraper. One end of the drive rod is connected to a motor, and the other end of the drive rod is located inside the inner sleeve. Two movable rings are respectively sleeved on the drive rod. One end of the telescopic bracket a and the telescopic bracket b are respectively hinged to the two movable rings, and the other end of the telescopic bracket a and the telescopic bracket b are respectively hinged to both ends of the cleaning scraper. The telescopic bracket a and the telescopic bracket b are arranged crosswise. The outer wall of the inner cleaning tube has a slot for the telescopic bracket a and the telescopic bracket b to penetrate.

[0023] The technical effects and advantages of this invention are as follows:

[0024] The heat exchange adjustment component of this invention drives the adjusting pipe to move axially along the cleaning inner pipe via a driving component, which can flexibly change the cross-section of the fluid channel in the heat exchange chamber, thereby adapting to the heat exchange intensity requirements of materials with different viscosities or different reaction stages during the sealant preparation process, and achieving dynamic and precise temperature control. Secondly, when the adjusting pipe moves to fit against the inner wall of the end of the heat exchange pipe, it can form a closed annular channel with the cleaning inner pipe. At the same time, the switching component is triggered to switch the heat exchange medium from the cleaning inner pipe to the annular channel. This not only effectively increases the turbulence and heat exchange area of ​​the heat exchange medium and significantly improves the heat exchange efficiency, but also avoids local overheating or overcooling through the circumferential uniform flow of the annular channel, ensuring uniform reaction of the sealant material. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a half-sectional view of the internal structure of the heat exchange pipe of the present invention;

[0027] Figure 3 This is a half-sectional view of the heat exchange adjustment component structure of the present invention;

[0028] Figure 4 This is a half-sectional side view of the heat exchange adjustment component of the present invention;

[0029] Figure 5 This is a schematic diagram of the conversion component structure of the present invention;

[0030] Figure 6 This is a half-sectional view of the conversion component structure of the present invention.

[0031] Figure 7 This is a schematic diagram of the cleaning component structure of the present invention;

[0032] Figure 8 This is an exploded cross-sectional view of the cleaning component structure of the present invention;

[0033] Figure 9 This is a planar sectional view of the inner wall structure of the regulating pipe and heat exchange pipe of the present invention.

[0034] In the picture:

[0035] 1. Heat exchange pipe; 11. Interface; 12. Inner sealing groove; 13. Jacket cavity;

[0036] 2. Heat exchange adjustment components; 21. Adjusting pipe; 211. Moving plate; 212. Linkage ring; 22. Pressing outer pipe; 221. Locking groove; 23. Cleaning inner pipe; 231. Air inlet; 232. Outer sealing plate; 2321. Ventilation hole; 24. Drive components;

[0037] 3. Converter; 31. Connecting ring; 311. Spiral groove; 32. Vent groove; 33. First vent hole; 34. Second vent hole; 35. Linkage rod;

[0038] 4. Cleaning component; 41. Drive rod; 42. Inner sleeve; 43. Moving ring; 44. Telescopic bracket a; 45. Telescopic bracket b; 46. Cleaning scraper. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Reference Figure 1 - Figure 9 A heat exchange device for preparing sealant is provided, including a heat exchange pipe 1, with interfaces 11 at both ends for connecting to a heat exchange medium delivery pipe.

[0041] A heat exchange adjustment component 2 is coaxially arranged inside the heat exchange chamber of the heat exchange pipe 1; the heat exchange adjustment component 2 includes a diameter adjustment pipe 21, a material pressing outer pipe 22, a cleaning inner pipe 23, and a driving component 24; one end of the heat exchange pipe 1 is provided with an inner sealing groove 12 for accommodating the diameter adjustment pipe 21 and the material pressing outer pipe 22;

[0042] The outer pressure tube 22 is coaxially sleeved on the outside of the adjusting tube 21, and both the outer pressure tube 22 and the adjusting tube 21 are connected to the drive component 24 for transmission. The inner cleaning tube 23 is coaxially arranged in the heat exchange chamber, and the adjusting tube 21 is movably sleeved on the outside of the inner cleaning tube 23. One end of the inner cleaning tube 23 is used to connect to the heat exchange medium, and the connection end is connected to the adjusting tube 21 through the conversion component 3. The drive component 24 is used to drive the adjusting tube 21 to move axially along the inner cleaning tube 23 to change the fluid channel in the heat exchange chamber.

[0043] When the adjusting pipe 21 moves to fit against the inner wall of the end of the heat exchange pipe 1, a closed annular channel is formed between the adjusting pipe 21 and the cleaning inner pipe 23. At the same time, the switching element 3 is triggered to switch the heat exchange medium flowing through the cleaning inner pipe 23 into the annular channel.

[0044] The heat exchange adjustment component 2 drives the adjusting pipe 21 to move axially along the cleaning inner pipe 23 via the driving component 24. This allows for flexible changes in the cross-section of the fluid channel within the heat exchange chamber, adapting to the heat exchange intensity requirements of materials with different viscosities or different reaction stages during sealant preparation, thus achieving dynamic and precise temperature control. Secondly, when the adjusting pipe 21 moves to fit against the inner wall of the end of the heat exchange pipe 1, it forms a closed annular channel with the cleaning inner pipe 23. Simultaneously, the switching component 3 is triggered to switch the heat exchange medium from the cleaning inner pipe 23 to this annular channel. This not only effectively increases the turbulence and heat exchange area of ​​the heat exchange medium, significantly improving heat exchange efficiency, but also avoids local overheating or overcooling through the circumferential uniform flow of the annular channel, ensuring uniform reaction of the sealant material. Furthermore, the overlapping design of the pressing outer pipe 22 and the adjusting pipe 21, along with the continuous through-structure of the cleaning inner pipe 23, enables the equipment to maintain efficient heat exchange while also having a self-cleaning function for the inner wall of the heat exchange chamber. This effectively prevents the adhesion or scaling of sealant raw materials, ensuring long-term operational stability and ease of maintenance.

[0045] A clamping cavity 13 for transporting the heat exchange medium is provided between the outer wall of the heat exchange pipe 1 and the heat exchange cavity.

[0046] One end of the adjusting pipe 21 is connected to a movable plate 211, which is sleeved on the output shaft of the drive component 24. One end of the pressing outer pipe 22 is sleeved on the output shaft of the drive component 24. A threaded groove is provided on the output shaft of the drive component 24. One end of the pressing outer pipe 22 and the adjusting pipe 21 are respectively movably connected to the threaded groove. A linkage ring 212 is sleeved on the outer wall of one end of the adjusting pipe 21. A locking groove 221 is provided on the inner wall of the end of the pressing outer pipe 22 away from the linkage ring 212. The linkage ring 212 is movably locked with the locking groove 221. In the initial position, the pressing outer pipe 22 is not connected to the threaded groove.

[0047] In the initial stage, when the output shaft of the drive unit 24 rotates, since the outer pressure tube 22 is not engaged with the threaded groove on the shaft, it only drives the adjusting tube 21 to rotate and move axially, thereby achieving precise adjustment of the fluid channel in the heat exchange chamber. This allows for flexible adaptation to the heat exchange intensity requirements of different reaction stages in the sealant preparation process. When the adjusting tube 21 moves to the point where one end contacts the inner wall of the heat exchange chamber, the linkage ring 212 at its other end drives the outer pressure tube 22 to move through the locking relationship of the locking groove 221, so that it engages with the threaded groove of the output shaft. At the same time, the adjusting tube 21 disengages from the threaded groove. At this point, the drive unit 24 continues to work and will then drive the outer pressure tube 21 to rotate and move axially. The tube 22 moves along the shaft, and the outer tube 22 is used to scrape and clean the surface of the adjusting tube 21, and squeeze out the residual sealant material in the heat exchange chamber. This effectively prevents cross-contamination, blockage and heat exchange efficiency reduction caused by material residue. At the same time, it significantly reduces the complexity of equipment maintenance and manual cleaning costs. In addition, the cavity 13 set between the outer wall of the heat exchange pipe 1 and the heat exchange chamber forms a parallel heat exchange medium flow channel. Through the synergistic effect with the internal flow channel, a three-dimensional multi-layer high-efficiency heat exchange pattern is formed, which further improves the overall heat exchange efficiency and temperature field uniformity, and ensures the stability of sealant product quality.

[0048] When equipment reset is required, the output shaft of the drive component 24 rotates in the reverse direction. The pressure outer tube 22, which is already connected to the threaded groove on the output shaft, moves to its initial position under the threaded drive. When the pressure outer tube 22 moves to a specific position where it is disengaged from the threaded groove, it automatically disengages from the threaded groove under structural guidance. At the same time, the pressure outer tube 22, through the locking groove 221 on its inner wall and the linkage ring 212 on the adjusting tube 21, reconnects with the threaded groove on the output shaft under the guidance of its linkage ring 212. The output shaft continues to rotate in the reverse direction, driving the adjusting tube 21, which has completed the heat exchange task and been cleaned, to reset together, preparing for the precise flow channel adjustment of the next working cycle. The entire process achieves seamless connection and automation of cleaning and reset actions. It can be automatically achieved through the simple operation of the forward and reverse rotation of the output shaft of the drive component 24. The system reliably completes the entire work cycle from flow channel adjustment, scraping and cleaning to mechanism reset without requiring an additional power source or control program. It is highly automated and reliable in operation. The reset process itself also serves as a secondary cleaning of the heat exchange chamber, ensuring that the loosened residual material is completely discharged. After reset, the core adjustment component, the diameter adjustment pipe 21, is immediately put into standby mode, ensuring the cleanliness and response speed of the equipment between batches. This greatly improves the efficiency of continuous production and product consistency. The entire system integrates the three major functions of adjustment, cleaning, and reset into the drive mechanism, which significantly simplifies the equipment structure and reduces manufacturing costs and failure rates. At the same time, the clamp 13 set between the outer wall of the heat exchange pipe 1 and the heat exchange chamber works in conjunction with the internal flow channel to form a three-dimensional, multi-layered, high-efficiency heat exchange pattern, ensuring the accuracy of temperature control and the uniformity of material reaction during the sealant preparation process.

[0049] The conversion component 3 includes a docking ring 31 fitted onto one end of the cleaning inner tube 23, a venting groove 32 formed within the docking ring 31, and a first venting hole 33 and a second venting hole 34 formed on both ends of the docking ring 31. An air inlet 231 communicating with the second venting hole 34 is formed on one end face of the cleaning inner tube 23. An outer sealing plate 232 extends from one end of the cleaning inner tube 23 via a rod. An air exchange hole 2321, which movably overlaps with the first venting hole 33, is formed on the outer sealing plate 232. The docking ring 31 is mounted on the outer sealing plate 232. Between the 32 and the cleaning inner tube 23, and with both ends of the docking ring 31 sealed and fitted to the end face of the cleaning inner tube 23 and the outer sealing plate 232 respectively, a spiral groove 311 is provided on the outer wall of the docking ring 31. A linkage rod 35 that is movably inserted into the spiral groove 311 is installed on the inner wall of one end of the adjusting tube 21. Through the ingenious design of its core component docking ring 31, the conversion component 3 realizes the pure mechanical automatic control of the flow channel switching. When the adjusting tube 21 moves to the final stage of contacting the inner wall of the heat exchange chamber, the linkage rod 35 on its inner wall will insert and move along the docking ring 232. The spiral groove 311 on the outer wall of ring 31 moves, precisely converting the linear motion of adjusting pipe 21 into the rotational motion of docking ring 31. When adjusting pipe 21 reaches the predetermined position, the linkage rod 35 and the spiral groove 311 work together to drive docking ring 31 to rotate to a specific angle, causing the second vent 34, which was originally connected to the air inlet 231 on the cleaning inner pipe 23, to be misaligned and closed. At the same time, the first vent 33 on docking ring 31 and the air exchange hole 2321 on outer sealing plate 232 are changed from misaligned to coincident and connected. The flow path is automatically switched from flowing through the inner cleaning tube 23 to the annular channel formed by the adjusting tube 21 and the inner cleaning tube 23. The entire process does not require additional sensors or electrical control units, but is achieved only through mechanical linkage. It is fast-responding, reliable in operation and low in manufacturing cost. It ensures that the equipment can seamlessly switch the medium flow path while adjusting the flow path shape to enhance the heat exchange effect. This makes the transition of the heat exchange medium between the conventional flow mode and the annular enhanced flow mode smooth and uninterrupted, which greatly optimizes the overall thermal management efficiency.

[0050] The cleaning inner tube 23 is equipped with a cleaning component 4, which includes a drive rod 41, an inner sleeve 42, moving rings 43, telescopic brackets a44 and b45, and a cleaning scraper 46. One end of the drive rod 41 is connected to a motor, and the other end is located inside the inner sleeve 42. Two moving rings 43 are respectively sleeved on the drive rod 41. One end of the telescopic brackets a44 and b45 is hinged to the two moving rings 43, and the other end of the telescopic brackets a44 and b45 is hinged to both ends of the cleaning scraper 46. The telescopic brackets a44 and b45 are arranged crosswise. The outer wall of the cleaning inner tube 23 has slots for the telescopic brackets a44 and b45 to pass through. The cleaning inner tube 23 can be rotated as a whole by the motor. The motor drives the drive rod 41 to rotate, causing the two moving rings 43 on it to generate relative displacement, thereby driving the crosswise telescopic brackets a44 and b45 to form a telescopic linkage mechanism. When a cleaning task needs to be performed, the telescopic brackets extend and retract. Driven by the moving ring 43, the brackets a44 and b45 extend outward through the grooves on the inner wall of the cleaning tube 23, pushing the cleaning scraper 46 to closely adhere to the inner wall of the heat exchange chamber or the outer surface of the adjusting tube 21 for scraping. This effectively removes firmly attached residual sealant, allowing the equipment to not only perform axial extrusion cleaning through the pressure outer tube 22, but also perform circumferential and radial deep cleaning on complex surfaces through the cleaning component 4. This is suitable for cleaning corners that are difficult to reach in conventional flow channels and for dealing with severe scaling conditions, thereby greatly improving the thoroughness of cleaning. After cleaning, the drive rod 41 moves in the opposite direction, and the cleaning scraper 46 is retracted into the inner cleaning tube 23 by the retraction of the telescopic brackets a44 and b45, so that it is completely retracted when not in operation, avoiding interference with fluid flow and heat exchange process, and ensuring the best performance when the equipment is running normally. This retractable cleaning mechanism seamlessly integrates the deep cleaning function into the equipment, allowing maintenance to be completed without disassembly, greatly reducing labor intensity and downtime.

[0051] It should be noted that the drive rod 41 has a slot that communicates with the inner wall of the clamping cavity 13, and one end of the heat exchange cavity is provided with an air outlet groove. An annular sealing plate is provided in the air outlet groove. One end of the annular sealing plate is in contact with the inner wall of the air outlet groove by a spring. When the adjusting pipe 21 is pressed into place with one end of the heat exchange cavity, one end of it squeezes the annular sealing plate, causing it to retract, resulting in one end of the annular channel communicating with the slot, so as to realize the discharge of the heat exchange medium and achieve circulation.

[0052] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heat exchange device for preparing a sealant, comprising a heat exchange pipe (1), wherein both ends of the heat exchange pipe (1) are respectively provided with interfaces (11) for connecting to a heat exchange medium conveying pipe, characterized in that: A heat exchange adjustment component (2) is coaxially arranged inside the heat exchange chamber of the heat exchange pipe (1). The heat exchange adjustment component (2) includes a diameter adjustment pipe (21), a material pressing outer pipe (22), a cleaning inner pipe (23), and a driving component (24). One end of the heat exchange pipe (1) is provided with an inner sealing groove (12) for accommodating the adjusting pipe (21) and the pressing outer pipe (22). The pressing outer tube (22) is coaxially sleeved on the outside of the adjusting tube (21), and both the pressing outer tube (22) and the adjusting tube (21) are connected to the driving component (24) for transmission. The cleaning inner tube (23) is coaxially arranged in the heat exchange cavity, and the adjusting tube (21) is movably covered on the outside of the cleaning inner tube (23); One end of the cleaning inner tube (23) is used to connect to the heat exchange medium, and the connection end is connected to the adjusting tube (21) through the conversion component (3); The driving component (24) is used to drive the adjusting pipe (21) to move axially along the cleaning inner pipe (23) to change the fluid channel in the heat exchange chamber. When the adjusting pipe (21) moves to fit against the inner wall of the end of the heat exchange pipe (1), a closed annular channel is formed between the adjusting pipe (21) and the cleaning inner pipe (23). At the same time, the switching element (3) is triggered to switch the heat exchange medium flowing through the cleaning inner pipe (23) into the annular channel.

2. The heat exchange device for preparing sealant according to claim 1, characterized in that, A clamping cavity (13) for transporting the heat exchange medium is provided between the outer wall of the heat exchange pipe (1) and the heat exchange cavity.

3. The heat exchange device for preparing sealant according to claim 1, characterized in that, One end of the adjusting pipe (21) is connected to a movable plate (211), which is sleeved on the output shaft of the driving component (24).

4. The heat exchange device for preparing sealant according to claim 3, characterized in that, One end of the pressing outer tube (22) is sleeved on the output shaft of the driving component (24). A threaded groove is provided on the output shaft of the driving component (24). One end of the pressing outer tube (22) and the adjusting tube (21) are respectively movably connected to the threaded groove.

5. A heat exchange device for preparing sealant according to claim 1, characterized in that, One end of the adjusting pipe (21) is fitted with a linkage ring (212), and the inner wall of the pressing outer pipe (22) away from the linkage ring (212) is provided with a locking groove (221), and the linkage ring (212) and the locking groove (221) are locked in place.

6. The heat exchange device for preparing sealant according to claim 1, characterized in that, The conversion component (3) includes a docking ring (31) sleeved on one end of the cleaning inner tube (23), a venting groove (32) opened in the docking ring (31), and a first venting hole (33) and a second venting hole (34) opened on both ends of the docking ring (31).

7. A heat exchange device for preparing sealant according to claim 6, characterized in that, The cleaning inner tube (23) has an air inlet (231) that communicates with the second vent (34) on one side end face. One end of the cleaning inner tube (23) is connected to an outer sealing plate (232) through a rod. The outer sealing plate (232) has an air exchange hole (2321) that is movably overlapped with the first vent (33).

8. A heat exchange device for preparing sealant according to claim 7, characterized in that, The docking ring (31) is positioned between the outer sealing plate (232) and the cleaning inner tube (23), and the two ends of the docking ring (31) are respectively sealed and fitted to the end face of the cleaning inner tube (23) and the outer sealing plate (232).

9. A heat exchange device for preparing sealant according to claim 8, characterized in that, The outer wall of the docking ring (31) is provided with a spiral groove (311), and a linkage rod (35) that is movably inserted into the spiral groove (311) is installed on the inner wall of one end of the adjusting pipe (21).

10. A heat exchange device for preparing sealant according to claim 9, characterized in that, The cleaning inner tube (23) is provided with a cleaning component (4), which includes a drive rod (41), an inner sleeve (42), a moving ring (43), a telescopic bracket a (44), a telescopic bracket b (45), and a cleaning scraper (46). One end of the drive rod (41) is connected to a motor, and the other end of the drive rod (41) is located inside the inner sleeve (42). Two moving rings (43) are provided and are respectively sleeved on the drive rod (41). One end of the telescopic bracket a (44) and the telescopic bracket b (45) are respectively hinged to the two moving rings (43), and the other end of the telescopic bracket a (44) and the telescopic bracket b (45) are respectively hinged to both ends of the cleaning scraper (46). The telescopic bracket a (44) and the telescopic bracket b (45) are arranged crosswise. The outer wall of the cleaning inner tube (23) is provided with a slot for the telescopic bracket a (44) and the telescopic bracket b (45) to penetrate.

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