Heat exchanger for chemical high viscosity fluids

Abstract

This invention discloses a heat exchanger for high-viscosity chemical fluids, belonging to the field of heat exchanger technology. It includes a tank body with scraping components on both the inner and outer sides. The scraping components include two detachably mounted fixed discs inside the tank body. A servo motor is fixedly connected to the upper side of the top cover, and a lead screw is fixedly connected to the output end of the servo motor. The invention utilizes a fixed frame that moves reciprocally up and down under the drive of the lead screw, compressing the high-viscosity fluid. Meanwhile, a scraper ring fixed to the frame scrapes away the high-viscosity fluid adhering to the inner wall of the tank. Because the frame compresses the high-viscosity fluid during its up-and-down movement, the flow direction of the fluid changes, creating turbulence. This increases the contact area between the high-viscosity fluid and the spiral copper tube. Simultaneously, the chamfered structure at both ends of the scraper ring creates a bidirectional flow for the scraped high-viscosity fluid, preventing accumulation on the scraper ring's end face.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger technology, and more specifically, to a heat exchanger for high-viscosity chemical fluids. Background Technology

[0002] Heat exchangers for high-viscosity fluids in chemical production are specialized heat exchange devices designed for viscous fluids with poor flowability and a tendency to adhere and scale, such as resins and high-viscosity lubricating oils. Through special structural designs such as wide flow channels, spiral channels, and mechanical scraping, they reduce the flow resistance of high-viscosity fluids, prevent flow channel blockage, and enhance fluid turbulence at low flow rates to improve heat exchange efficiency. Some compatible models can also be used in complex working conditions containing a small amount of solid particles, meeting the heat exchange needs of various scenarios in chemical processes, such as stable heating, cooling, and waste heat recovery of high-viscosity fluids.

[0003] While heat exchangers for high-viscosity chemical fluids can specifically solve the heat transfer problems of viscous fluids, different mainstream types all have their own shortcomings. For example, spiral plate heat exchangers are limited by the rolling process, and the maximum operating pressure is usually no more than 2MPa and the temperature is below 400℃. Once a leak occurs, it is difficult to repair on-site. Scraped plate heat exchangers have a complex structure, and the rotating scrapers and other moving parts are prone to wear after long-term operation, resulting in maintenance costs and failure rates that are much higher than ordinary heat exchangers. Vertical shell and tube heat exchangers have a large-diameter design optimized for high-viscosity fluids, which significantly reduces the heat transfer area per unit volume and increases the overall footprint of the equipment. Shell and tube heat exchangers consume five times more metal than ordinary shell and tube heat exchangers, and the numerous pipe joints make them prone to leaks. In existing technologies, the viscosity of high-viscosity fluids increases exponentially in low-temperature environments, which directly leads to a sharp increase in fluid flow resistance, a significant increase in pump consumption, and makes it difficult for the fluid to form turbulence. The boundary layer thickness of the heat exchange surface increases significantly, heat exchange efficiency decreases, and in severe cases, fluid solidification or flow channel blockage may occur. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of this invention is to provide a heat exchanger for high-viscosity chemical fluids.

[0005] To solve the above problems, the present invention adopts the following technical solution, which can compress the high viscosity fluid during the up and down movement of the fixed frame, so that the high viscosity fluid forms turbulence. At the same time, the chamfered structure at both ends of the scraper ring can form a bidirectional flow for the scraped high viscosity fluid, avoiding the accumulation of the scraped fluid on the end face of the scraper ring.

[0006] A heat exchanger for high-viscosity chemical fluids includes a tank and a top cover disposed at the upper and lower ends of the tank. A controller is fixedly connected to the front side of the outer surface of the tank. A scraping component is provided on both the inner and outer sides of the tank. The scraping component includes two fixed plates that are detachably installed inside the tank. Multiple spiral copper tubes are fixedly connected between the upper and lower fixed plates. A servo motor is fixedly connected to the upper side of the top cover. A lead screw is fixedly connected to the output end of the servo motor. A lead screw nut is threaded to the outer side of the lead screw. A scraper ring is slidably connected inside the tank. Multiple fixing brackets are fixedly connected to the inner surface of the scraper ring. The fixing bracket on the right side is sleeved on the outside of the lead screw nut. A limit rod is fixedly connected between the upper and lower fixed plates. The fixing bracket on the left side is slidably sleeved on the outside of the limit rod.

[0007] Furthermore, the upper and lower ends of the spiral copper tube are respectively connected to two fixed discs, and the lead screw is connected to the top cover located on the upper side.

[0008] Furthermore, the inner wall of the tank body slides in contact with the outer surface of the scraper ring, and the upper and lower sides of the inner surface of the scraper ring are chamfered. Multiple spiral copper tubes and multiple fixing frames are arranged alternately.

[0009] Furthermore, the tank body is provided with a flow extrusion assembly, which includes a first sleeve fixedly connected to the side of the fixing frame away from the scraper ring.

[0010] Furthermore, the first sleeve has blades fixedly connected in a ring array inside, the blades being arc-shaped, and multiple spiral copper tubes together surrounding the outside of the first sleeve and the blades.

[0011] Furthermore, the tank body is provided with a flow-dispersing assembly, which includes a second sleeve that is fixedly connected to the side of the multiple blades away from the first sleeve.

[0012] Furthermore, a rotating rod is rotatably connected between the upper and lower fixed discs. A guide groove is provided on the outer surface of the rotating rod. Guide columns are fixedly connected to both the front and rear sides inside the second sleeve. The outer surfaces of the two guide columns slide and press against the inner surface of the guide groove. A first stirring blade is fixedly connected to the lower side of the outer surface of the rotating rod.

[0013] Furthermore, the outer surface of the guide post is tightly fitted to the inner wall of the guide groove, the second sleeve is slidably sleeved on the outer side of the rotating rod, and the bottom end of the rotating rod passes through the fixed plate located on the lower side.

[0014] Furthermore, the interior of the tank is equipped with a temperature measuring component, which includes a second stirring blade fixedly connected to the bottom end of the rotating rod.

[0015] Furthermore, a sealing ring is fitted on the lower side of the outer surface of the rotating rod. The sealing ring is located inside the lower fixed plate. A partition is fixedly connected to the lower side of the tank. The partition, together with the lower fixed plate, isolates the coolant from the high-viscosity fluid. The bottom end of the spiral copper tube passes through the partition. A temperature sensor is fixedly connected to the upper left side of the partition. A branch pipe is fixedly connected to the center of the partition. The branch pipe passes through the top cover located on the lower side. The bottom end of the branch pipe is connected to an external liquid supply device. The branch pipe is used to transport coolant to the top of the partition, so that the coolant can quickly remove the local heat accumulation of the high-viscosity fluid at the bottom of the tank.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The present invention uses a fixed frame that moves up and down repeatedly under the drive of a screw to squeeze the high viscosity fluid. The scraper ring fixed by the fixed frame scrapes off the high viscosity fluid attached to the inner side wall of the tank. As the fixed frame can squeeze the high viscosity fluid during the up and down movement, the flow direction of the high viscosity fluid changes, thereby forming turbulence. This increases the contact area between the high viscosity fluid and the spiral copper tube. At the same time, the chamfered structure at the upper and lower ends of the scraper ring can form a bidirectional flow for the scraped high viscosity fluid, preventing the scraped fluid from accumulating on the end face of the scraper ring.

[0017] (2) The present invention can change the flow state of high viscosity fluid by setting the blades to move up and down. As the arc-shaped blades 32 reciprocate in the axial direction, they force shearing and radially squeezing the fluid in the gap of the spiral copper tube 22, thereby destroying the fluid stagnation boundary layer near the heat exchange tube wall, increasing the renewal rate of the boundary layer fluid and enhancing the convective heat transfer effect. This effectively avoids the problem of a sudden drop in heat transfer efficiency caused by the thickening of the boundary layer of the heat exchange surface in high viscosity fluid at low temperature.

[0018] (3) The present invention uses the first stirring blade to stir the high viscosity fluid at the bottom of the tank under the drive of the rotating rod. Since the turbulent flow field and the radial squeezing flow field of the squeezing component work together, the heat transfer efficiency of the high viscosity fluid can be improved without the need for a large diameter tube structure. At the same time, the rotation of the first stirring blade can also prevent the viscous fluid from settling and accumulating at the bottom of the tank, so that the heat exchange efficiency of the high viscosity fluid is guaranteed. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the scraper ring of the present invention; Figure 4 This is a cross-sectional view of the partition of the present invention; Figure 5 This is a schematic diagram of the structure of the fixing frame of the present invention; Figure 6 This is a cross-sectional view of the rotating rod of the present invention; Figure 7 This is a cross-sectional view of the first sleeve of the present invention; Figure 8 For the present invention Figure 7 Enlarged diagram of point A.

[0020] Explanation of the labels in the diagram: 1. Tank body; 11. Top cover; 12. Controller; 2. Scraping component; 21. Fixing plate; 22. Spiral copper tube; 23. Servo motor; 24. Lead screw; 25. Lead screw nut; 26. Scraper ring; 27. Fixing frame; 28. Limiting rod; 3. Extrusion assembly; 31. First sleeve; 32. Blade; 4. Turbulence assembly; 41. Second sleeve; 42. Guide column; 43. Rotating rod; 44. Guide groove; 45. First stirring blade; 5. Temperature measuring assembly; 51. Second stirring blade; 52. Sealing ring; 53. Baffle; 54. Temperature sensor; 55. Branch pipe. Detailed Implementation

[0021] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1 to 8 A heat exchanger for high-viscosity chemical fluids includes a tank body 1 and a top cover 11 disposed at the upper and lower ends of the tank body 1. A controller 12 is fixedly connected to the front side of the outer surface of the tank body 1. A scraping component 2 is provided on both the inner and outer sides of the tank body 1. The scraping component 2 includes two fixed plates 21 that are detachably installed inside the tank body 1. Multiple spiral copper tubes 22 are fixedly connected between the upper and lower fixed plates 21. A servo motor 23 is fixedly connected to the upper side of the top cover 11. A lead screw 24 is fixedly connected to the output end of the servo motor 23. A lead screw nut 25 is threadedly connected to the outer side of the lead screw 24. A scraper ring 26 is slidably connected inside the tank body 1. Multiple fixing brackets 27 are fixedly connected to the inner surface of the scraper ring 26. The fixing bracket 27 on the right side is sleeved on the outside of the lead screw nut 25. A limit rod 28 is fixedly connected between the upper and lower fixed plates 21. The fixing bracket 27 on the left side is slidably sleeved on the outside of the limit rod 28.

[0023] The upper and lower ends of the spiral copper tube 22 pass through two fixed discs 21 respectively, and the lead screw 24 passes through the top cover 11 located on the upper side.

[0024] The inner wall of the tank 1 slides and fits against the outer surface of the scraper ring 26. Both the upper and lower sides of the inner surface of the scraper ring 26 are chamfered. Multiple spiral copper tubes 22 and multiple fixing brackets 27 are arranged alternately.

[0025] By adopting the above technical solution, after the servo motor 23 receives the periodic forward and reverse pulse signals output by the controller 12, it drives the lead screw 24 to rotate at a certain angle. The rotational motion is converted into the axial linear displacement of the lead screw nut 25 through the thread engagement. The right fixed frame 27 moves up and down synchronously with the lead screw nut 25, driving the overall scraper ring 26 to slide up and down along the inner wall of the tank 1. The left fixed frame 27 slides synchronously along the limit rod 28, providing circumferential anti-rotation constraint for the scraper ring 26. At the same time, the fixed frame 27 squeezes the high viscosity fluid. When the viscosity of the high viscosity fluid increases exponentially under low temperature conditions, it is very easy to adhere to the inner wall of the tank 1 to form a stagnant boundary layer and scale layer of uneven thickness. The scraper ring 26 scrapes off the viscous deposits adhering to the heat exchange wall at a low speed and in a stable manner. It should be noted that multiple spiral copper tubes 22 are arranged in a circumferential array, and a vertical clearance channel is reserved between two adjacent spiral copper tubes 22. Multiple fixing frames 27 are respectively installed in the clearance channel, and the outer wall of the fixing frame 27 is allowed to slide against the outer wall of the spiral copper tube 22. As the fixing frame 27 moves up and down, it can compress the high-viscosity fluid, causing the flow direction of the high-viscosity fluid to change, thereby forming turbulence. This increases the contact area between the high-viscosity fluid and the spiral copper tube 22. At the same time, the chamfered structure at both ends of the scraper ring 26 can form a bidirectional flow for the scraped high-viscosity fluid, preventing the scraped fluid from accumulating on the end face of the scraper ring 26.

[0026] like Figures 3 to 5 and Figure 7 and Figure 8 As shown, the tank body 1 is provided with a squeezing assembly 3 inside. The squeezing assembly 3 includes a first sleeve 31 fixedly connected to the side of the fixed frame 27 away from the scraper ring 26.

[0027] The first sleeve 31 has blades 32 fixedly connected in a ring array inside. The blades 32 are arc-shaped, and multiple spiral copper tubes 22 surround the outside of the first sleeve 31 and the blades 32.

[0028] By adopting the above technical solution, when the scraper ring 26 drives the fixed frame 27 to reciprocate along the axial direction, the first sleeve 31 fixed at the end of the fixed frame 27 moves synchronously along the axial direction. The multiple arc-shaped blades 32 arranged in a ring array inside the sleeve move synchronously with the sleeve, forming a directional squeezing effect on the high-viscosity fluid surrounding it. During the downward stroke, the concave surface of the arc-shaped blades 32 pushes the fluid downward to the annular gap region of the outer spiral copper tube 22 at high speed, forcibly peeling off the stagnant boundary layer that was originally attached to the outer wall of the spiral copper tube 22, forcing the high-viscosity fluid that was originally flowing at a low speed along the axial direction to generate cross-flow disturbance, directly reducing the boundary layer thickness of the outer wall of the spiral copper tube 22 from the conventional laminar flow state. During the upward return stroke, the convex surface of the arc-shaped blades 32 pushes the fluid upward to squeeze in the opposite direction, forming a bidirectional interlaced shear flow in the spiral flow channel gap of the spiral copper tube 22, eliminating the flow dead zone of the high-viscosity fluid in the spiral tube gap. It should be noted that this extrusion process can be applied to high-viscosity laminar fluids with Reynolds numbers of only 10 to 60 under normal operating conditions. Without increasing the power of the delivery pump, the fluid in the gap of the spiral copper tube 22 is subjected to forced shearing and radial extrusion by the axial reciprocating motion of the arc-shaped blades 32. This destroys the fluid stagnation boundary layer near the heat exchange tube wall, increases the renewal rate of the boundary layer fluid and enhances the convective heat transfer effect. This effectively avoids the problem of a sharp drop in heat transfer efficiency caused by the thickening of the boundary layer on the heat exchange surface in high-viscosity fluids at low temperatures.

[0029] like Figures 3 to 8 As shown, the tank body 1 is provided with a flow turbulence assembly 4 inside. The flow turbulence assembly 4 includes a second sleeve 41 that is fixedly connected to the side of the multiple blades 32 away from the first sleeve 31.

[0030] A rotating rod 43 is rotatably connected between the upper and lower fixed plates 21. A guide groove 44 is provided on the outer surface of the rotating rod 43. Guide columns 42 are fixedly connected to the front and rear sides inside the second sleeve 41. The outer surfaces of the two guide columns 42 slide and press against the inner surface of the guide groove 44. A first stirring blade 45 is fixedly connected to the lower side of the outer surface of the rotating rod 43.

[0031] The outer surface of the guide post 42 is tightly fitted to the inner wall of the guide groove 44, and the second sleeve 41 is slidably sleeved on the outer side of the rotating rod 43. The bottom end of the rotating rod 43 passes through the fixed plate 21 located on the lower side.

[0032] By adopting the above technical solution, when the first sleeve 31 drives the arc-shaped blade 32 to perform axial reciprocating motion, the second sleeve 41, which is fixed to the end of the arc-shaped blade 32, moves synchronously along the axial direction. The two guide pillars 42 symmetrically arranged inside the second sleeve 41 are embedded in the double-headed spiral guide groove 44 opened on the surface of the rotating rod 43. The spiral curved surface contour of the guide groove 44 accurately converts the linear displacement of the second sleeve 41 into the limited angle forward and reverse rotation of the rotating rod 43. The rotating rod 43 drives the first stirring blade 45 arranged on the outer surface to perform periodic forward and reverse oscillation, forming a spiral shearing effect on the high-viscosity fluid in the lower part of the tank 1, and squeezing the fluid micro-particles. Further cutting and crushing completely breaks the laminar and stratified structure of the high-viscosity fluid, preventing the viscous fluid from settling and accumulating at the bottom of the tank 1. The polytetrafluoroethylene sealing ring 52 configured at the fit gap between the rotating rod 43 and the lower fixed plate 21 forms a dynamic seal, which not only ensures that the rotating rod 43 rotates without jamming resistance, but also completely prevents the high-viscosity fluid from leaking to the outside. Since the turbulent flow field and the radial extrusion flow field of the extrusion component 3 work together, the heat transfer efficiency of the high-viscosity fluid can be improved without the need for a large-diameter tube structure. At the same time, the rotation of the first stirring blade 45 can also prevent the viscous fluid from settling and accumulating at the bottom of the tank 1, thus ensuring the heat exchange efficiency of the high-viscosity fluid.

[0033] like Figures 1 to 4 and Figure 6 As shown, the interior of the tank 1 is equipped with a temperature measuring component 5, which includes a second stirring blade 51 fixedly connected to the bottom of the rotating rod 43.

[0034] A sealing ring 52 is fitted on the lower side of the outer surface of the rotating rod 43. The sealing ring 52 is located inside the lower fixed plate 21. A partition 53 is fixedly connected to the lower side of the tank body 1. The partition 53, together with the lower fixed plate 21, isolates the coolant from the high-viscosity fluid. The bottom end of the spiral copper tube 22 passes through the partition 53. A temperature sensor 54 is fixedly connected to the upper left side of the partition 53. A branch pipe 55 is fixedly connected to the center of the partition 53. The branch pipe 55 passes through the top cover 11 located on the lower side. The bottom end of the branch pipe 55 is connected to an external liquid supply device. The branch pipe 55 is used to transport coolant to the top of the partition 53, so as to quickly remove the local heat accumulation of the high-viscosity fluid at the bottom of the tank body 1.

[0035] By adopting the above technical solution, the second stirring blade 51, which is rigidly connected to the bottom of the rotating rod 43, swings synchronously with the rotating rod 43 in both forward and reverse directions, creating local high-frequency disturbances to the coolant to be tested above the baffle 53. The baffle 53 divides the internal space of the tank 1 into an upper heat exchange chamber and a lower temperature measurement and flow stabilization chamber. The temperature sensor 54 monitors the temperature of the coolant in real time and transmits the data back to the controller 12. When the temperature of the coolant is detected to be higher than the set threshold, the controller 12 links the regulating valve of the external liquid supply device to dynamically replace the coolant. Since the coolant above the baffle 53 can quickly remove the local heat accumulation of the high-viscosity fluid at the bottom of the tank 1, it avoids the bottom material from overheating and coking due to long-term retention. At the same time, it also forms a local heat exchange surface, supplementing the total heat exchange area, thereby improving the heat exchange efficiency of the high-viscosity fluid.

[0036] Working principle: The servo motor 23 is driven by the periodic pulse signal of the controller 12, which drives the lead screw 24 to rotate reciprocally, which is converted into the up and down reciprocating sliding of the scraper ring 26. This scrapes off the viscous scale layer on the inner wall of the tank 1 and guides the fluid. The initial stirring forms turbulence, which increases the contact area between the fluid and the spiral copper tube 22. The following arc-shaped blades 32 bidirectionally squeeze the flow, peeling off the stagnant layer on the outer wall of the copper tube. The low Reynolds number high viscosity fluid can be converted into a pseudo-turbulent state without increasing the pump power. At the same time, it avoids the deposition and blockage of fluid containing particles. The sleeve converts the axial movement into the periodic forward and reverse oscillation of the stirring blades through the spiral guide groove 44, which completely breaks the laminar flow structure of the fluid, eliminates the dead zone at the bottom, and prevents the material from settling and accumulating. The stirring blades that swing synchronously at the bottom disturb the coolant. The temperature sensor 54 monitors and controls the temperature in real time. The baffle 53 separates the independent heat exchange chambers to remove the heat accumulated at the bottom, avoids the material from overheating and coking, and ensures the heat exchange efficiency of the high viscosity fluid.

[0037] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A heat exchanger for high-viscosity chemical fluids, comprising a tank (1) and top covers (11) disposed at the upper and lower ends of the tank (1), wherein a controller (12) is fixedly connected to the front side of the outer surface of the tank (1), characterized in that: The inner and outer sides of the tank (1) are provided with scraping components (2), and the scraping components (2) include two fixed plates (21) that are detachably installed inside the tank (1). Multiple spiral copper tubes (22) are fixedly connected between the upper and lower fixed discs (21). A servo motor (23) is fixedly connected to the upper side of the top cover (11). A lead screw (24) is fixedly connected to the output end of the servo motor (23). A lead screw nut (25) is threadedly connected to the outer side of the lead screw (24). A scraper ring (26) is slidably connected inside the tank body (1). Multiple fixed brackets (27) are fixedly connected to the inner surface of the scraper ring (26). The fixed bracket (27) on the right side is sleeved on the outer side of the lead screw nut (25). A limit rod (28) is fixedly connected between the upper and lower fixed discs (21). The fixed bracket (27) on the left side is slidably sleeved on the outer side of the limit rod (28).

2. The heat exchanger for high-viscosity chemical fluids according to claim 1, characterized in that: The upper and lower ends of the spiral copper tube (22) are respectively penetrated by two fixed discs (21), and the lead screw (24) is penetrated by the top cover (11) located on the upper side.

3. A heat exchanger for high-viscosity chemical fluids according to claim 1, characterized in that: The inner wall of the tank (1) slides against the outer surface of the scraper ring (26). Both the upper and lower sides of the inner surface of the scraper ring (26) are chamfered. Multiple spiral copper tubes (22) and multiple fixing frames (27) are arranged alternately.

4. A heat exchanger for high-viscosity chemical fluids according to claim 1, characterized in that: The tank (1) is provided with a squeezing assembly (3) inside, the squeezing assembly (3) including a first sleeve (31) fixedly connected to the side of the fixed frame (27) away from the scraper ring (26).

5. A heat exchanger for high-viscosity chemical fluids according to claim 4, characterized in that: The first sleeve (31) has blades (32) fixedly connected in a ring array inside. The blades (32) are arc-shaped, and multiple spiral copper tubes (22) surround the outside of the first sleeve (31) and the blades (32).

6. A heat exchanger for high-viscosity chemical fluids according to claim 5, characterized in that: The tank (1) is provided with a flow-dispersing assembly (4) inside, which includes a second sleeve (41) that is fixedly connected to the side of the multiple blades (32) away from the first sleeve (31).

7. A heat exchanger for high-viscosity chemical fluids according to claim 6, characterized in that: A rotating rod (43) is rotatably connected between the upper and lower fixed disks (21). A guide groove (44) is provided on the outer surface of the rotating rod (43). Guide columns (42) are fixedly connected to the front and rear sides inside the second sleeve (41). The outer surfaces of the two guide columns (42) slide and press against the inner surface of the guide groove (44). A first stirring blade (45) is fixedly connected to the lower side of the outer surface of the rotating rod (43).

8. A heat exchanger for high-viscosity chemical fluids according to claim 7, characterized in that: The outer surface of the guide post (42) is in close contact with the inner wall of the guide groove (44), and the second sleeve (41) is slidably sleeved on the outside of the rotating rod (43). The bottom end of the rotating rod (43) passes through the fixed plate (21) located on the lower side.

9. A heat exchanger for high-viscosity chemical fluids according to claim 8, characterized in that: The tank (1) is equipped with a temperature measuring component (5), which includes a second stirring blade (51) fixedly connected to the bottom of the rotating rod (43).

10. A heat exchanger for high-viscosity chemical fluids according to claim 9, characterized in that: A sealing ring (52) is fitted on the lower side of the outer surface of the rotating rod (43). The sealing ring (52) is located inside the lower fixed plate (21). A partition (53) is fixedly connected to the lower side of the tank body (1). The partition (53) works with the lower fixed plate (21) to isolate the coolant from the high-viscosity fluid. The bottom end of the spiral copper tube (22) passes through the partition (53). A temperature sensor (54) is fixedly connected to the upper left side of the partition (53). A branch pipe (55) is fixedly connected to the center of the partition (53). The branch pipe (55) passes through the top cover (11) located on the lower side. The bottom end of the branch pipe (55) is connected to an external liquid supply device. The branch pipe (55) is used to transport coolant to the top of the partition (53) to quickly remove the local heat accumulation of the high-viscosity fluid at the bottom of the tank body (1).

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