A rotary heat exchange device

Abstract

The application discloses a rotary heat exchange device and relates to the technical field of heat exchangers. The application comprises a support frame, a flow-through water tank fixedly connected in the support frame, a main flow pipe, the main flow pipe rotatingly penetrating through the flow-through water tank and being arranged along the width direction of the flow-through water tank, a plurality of partition blocks configured in the middle of the main flow pipe, a plurality of shunt heat exchange pipes communicated with the main flow pipe, the two ends of the shunt heat exchange pipes being respectively communicated with the two sides of the partition blocks, and a rotating pushing synchronization member comprising a rotating mechanism installed on the support frame and used for driving the main flow pipe to rotate. The rotating mechanism and the pushing synchronization member are cooperated to realize the rotation and reciprocating movement of the main flow pipe, so that the turbulence degree of the liquid in the device is obviously improved, the contact amount of the liquid in the flow-through water tank is increased, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger technology, and more specifically to a rotary heat exchange device. Background Technology

[0002] Petrochemicals are an important branch of the chemical industry, primarily using petroleum and natural gas as raw materials. Through a series of complex chemical processing steps, various chemical products are produced. In the secondary processing stages of petrochemicals, product refining and blending require cooling. These steps are crucial to the quality and production efficiency of petroleum products. In the production of lubricating oil, the oil after solvent refining and clay refining processes requires cooling. For example, lubricating oil refined with clay typically has a high temperature (e.g., 100℃-120℃). To meet the requirements for product storage and packaging, it needs to be cooled to around 50℃-70℃. Heat exchange cooling, using water or air cooling, ensures the stability of the lubricating oil's performance.

[0003] Existing factories will use water-cooled heat exchange devices to cool down the equipment and recover and reuse its heat, thus achieving energy-saving effects.

[0004] However, in existing water-cooled heat exchange devices, the flow pipes for lubricating oil are mostly fixed structures. When the lubricating oil flows, it conducts heat with the external low-temperature water source to achieve heat exchange and heat dissipation. However, relying on fixed pipes for heat exchange is inefficient and ineffective.

[0005] Therefore, this invention proposes a rotary heat exchange device. Summary of the Invention

[0006] The purpose of this invention is to provide a rotary heat exchange device in order to solve the problems mentioned above in the background art.

[0007] To achieve the above objectives, the present invention specifically adopts the following technical solution: A rotary heat exchange device, comprising: A support frame, wherein a water circulation tank is fixedly connected inside the support frame; A heat exchange tube includes a main flow tube that rotatably passes through a flow channel and is arranged along its width. The main flow tube has multiple partition blocks in the middle and multiple branch heat exchange tubes are connected to the main flow tube. The two ends of the branch heat exchange tubes are respectively connected to the two sides of the partition blocks. The rotating and pushing synchronization component includes a rotating mechanism mounted on a support frame, the rotating mechanism being used to drive the main flow pipe to rotate, and a pushing component being installed between the flow water tank and the support frame to drive the main flow pipe to reciprocate along the width direction of the flow water tank.

[0008] Furthermore, the circulating water tank includes a water storage tank fixedly connected within the support frame, with water pipes fixedly connected to both ends along the length of the water storage tank, and a water pump fixedly connected within the support frame and connected to one of the water pipes.

[0009] Furthermore, the upper end of the water tank is open and a mesh cover for covering the water tank is hinged to one side, and a blower is connected to the upper side of the mesh cover.

[0010] Furthermore, there are multiple main flow pipes, and the multiple main flow pipes are interconnected in pairs through U-shaped connecting pipe assemblies. The ends of the two main flow pipes near the two ends of the flow water tank are connected to the inlet pipe and the outlet pipe through bamboo joint telescopic pipes.

[0011] Furthermore, the U-shaped connecting pipe assembly includes a connecting frame fixedly connected to both sides of the support frame, a U-shaped pipe fixedly connected to the connecting frame, and sliding pipes connected to both ends of the U-shaped pipe through bamboo-joint telescopic pipes. The sliding pipes are slidably installed on the connecting frame, and the other end of the sliding pipes is connected to the main pipe through a rotating connecting pipe fitting.

[0012] Furthermore, the heat exchange tube includes four branch tubes, which are arranged in pairs and connected to both sides of the partition block of the main tube. The branch tubes in the same group are arranged in a V-shape and their ends are connected to the branch tubes in another group by a U-shaped guide tube.

[0013] Furthermore, the outer side of the U-shaped guide tube is arrayed with multiple annular heat sinks along its length.

[0014] Furthermore, the rotating mechanism includes wide toothed gears fixedly connected to both ends of the main flow pipe, and multiple auxiliary shafts are rotatably mounted on both sides of the flow channel. Short toothed gears that mesh with the wide toothed gears are fixedly connected to the auxiliary shafts. The auxiliary shafts on the same side are connected by synchronous belt drive. A drive motor that is drively connected to one of the auxiliary shafts is fixedly mounted on the support frame.

[0015] Furthermore, the pushing component includes positioning rings and support plates fixedly connected to both sides of the flow channel. There are multiple positioning rings that are sleeved on the outside of the main flow pipe. A fixed ring is fixedly connected to the support plate and is disposed opposite to the positioning ring. An inclined annular guide groove is constructed between the positioning ring and the fixed ring. A guide rod that moves through the annular guide groove is constructed on the main flow pipe.

[0016] Furthermore, the opposite edges of the positioning ring and the fixing ring are both constructed with rounded corners, and the end of the guide rod is threadedly connected with a limit ball.

[0017] The beneficial effects of the present invention are as follows: the application can realize the rotation and reciprocating movement of the main pipe through the synergistic action of the rotating mechanism and the pushing component, thereby significantly improving the turbulence of the lubricating oil inside the device and increasing the contact amount with the liquid in the circulating water tank, thereby improving the heat exchange efficiency. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial three-dimensional structural diagram of the present invention; Figure 3 This is another partial three-dimensional structural diagram of the present invention; Figure 4 This is a three-dimensional structural diagram of the heat exchange tube of the present invention; Figure 5 This is the present invention. Figure 4 Half-section view of the three-dimensional structure; Figure 6 This is a three-dimensional structural diagram of the pushing component of the present invention; Reference numerals: 1. Support frame; 2. Flowing water tank; 201. Water storage tank; 202. Water pipe; 203. Water pump; 3. Heat exchange tube; 301. Main flow pipe; 302. Divider block; 303. Branch heat exchange tube; 3031. Branch pipe; 3032. U-shaped guide pipe; 3033. Annular heat sink; 4. Rotation and pushing synchronization component; 401. Rotation mechanism; 4011. Wide toothed gear; 4012. Auxiliary shaft; 4013. Short toothed gear 4014. Wheel; 402. Drive motor; 402. Pushing component; 4021. Positioning ring; 4022. Support plate; 4023. Fixing ring; 4024. Annular guide groove; 4025. Guide rod; 40251. Limiting ball; 5. Mesh cover; 501. Blowing fan; 6. U-shaped connecting pipe assembly; 601. Connecting frame; 602. U-shaped tube; 603. Sliding tube; 604. Rotating connecting pipe fitting; 7. Bamboo joint telescopic tube; 8. Inlet pipe; 9. Outlet pipe. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0020] like Figures 1-4 As shown, an embodiment of the present invention provides a rotary heat exchange device, comprising: Support frame 1, with a circulating water tank 2 fixedly connected inside the support frame 1. The circulating water tank 2 is mainly used to store water. It should be noted that this device can not only be used for cooling lubricating oil in chemical product processing, but also for heat exchange heating of other liquids. When cooling lubricating oil, a low-temperature water source can be added to the circulating water tank 2, while when heat exchange heating of other liquids is required, a high-temperature water source can be added to the circulating water tank 2. The heat exchange tube 3 includes a main flow tube 301, which rotatably passes through the flow tank 2 and is arranged along its width. Multiple partition blocks 302 are constructed in the middle of the main flow tube 301. Multiple branch heat exchange tubes 303 are connected to the main flow tube 301. The two ends of the branch heat exchange tubes 303 are respectively connected to the two sides of the partition blocks 302. The inside of the main flow tube 301 is divided into multiple cavities by the partition blocks 302, and the multiple cavities are connected to each other by the branch heat exchange tubes 303. With the blocking of the partition blocks 302, the original straight flow in the main flow tube 301 can be changed to curved flow. By adding the branch heat exchange tubes 303, the flow distance of the lubricating oil is increased, thereby increasing the heat conduction time between the lubricating oil and the water source in the flow tank 2 and improving the heat exchange effect. The rotating and pushing synchronization component 4 includes a rotating mechanism 401 mounted on the support frame 1. The rotating mechanism 401 drives the main flow pipe 301 to rotate. A pushing component 402 is installed between the flow water tank 2 and the support frame 1 to drive the main flow pipe 301 to reciprocate along the width direction of the flow water tank 2. By setting the rotating mechanism 401, the main flow pipe 301 can be rotated as a whole, so that the lubricating oil can form a turbulent flow in the main flow pipe 301. The position of the branch heat exchange tube 303 in the flow water tank 2 can be continuously changed to conduct heat with different positions in the water source. To prevent heat from accumulating in one place and causing a decrease in heat exchange efficiency, the pusher 402 is installed. It can push the main stream pipe 301 to move horizontally back and forth in the flow water tank 2 while the main stream pipe 301 rotates. On the one hand, it can stir the water in the flow water tank 2, so that the water in the flow water tank 2 mixes quickly and evenly, ensuring the contact heat exchange effect with the branch heat exchange pipe 303, preventing heat from accumulating in one place and failing to dissipate, and improving the heat exchange effect. On the other hand, it can also increase the turbulence of the lubricating oil inside the main stream pipe 301 and the branch heat exchange pipe 303, further increasing the heat exchange effect.

[0021] like Figures 1-2The present invention discloses the specific structure of the circulating water tank 2, which allows for convenient replacement of the water source and continuous circulation. It maintains the internal water temperature balance by utilizing the flowing water state. The circulating water tank 2 includes a water storage tank 201 fixedly connected to a support frame 1. Water pipes 202 are fixedly connected to both ends of the length of the water storage tank 201. A water pump 203, connected to one of the water pipes 202, is fixedly connected inside the support frame 1. The water storage tank 201 has a rectangular structure, and its length is connected to other equipment via the water pipes 202. The water source in the water storage tank 201 can be continuously pumped out by the water pump 203, while the other water pipe 202 can continuously replenish the water storage tank 201 with a constant-temperature water source. Maintaining the temperature inside the water storage tank 201 by utilizing the flowing water state ensures heat exchange efficiency. The water source in the water storage tank 201 can also be conveniently replaced by the water pump 203, facilitating the device's function of cooling lubricating oil or heating other liquids, increasing the device's flexibility and convenience.

[0022] like Figure 1The diagram shows the specific structure of the water tank 201 of this invention, which is used to improve heat dissipation. The upper end of the water tank 201 is open, and a mesh cover 5 for covering the water tank 201 is hinged to one side. A fan 501 is connected to the upper side of the mesh cover 5. It should be noted that this device has two states. The first is for gently heating other liquids (such as some organic solvents used in chemical production, which usually need to maintain temperature to ensure their fluidity). In this case, the water source in the water tank 201 is a high-temperature water source, and the water level exceeds the highest point of all the branch heat exchange tubes 303. The high-temperature water source contacts the main pipe 301 and the branch heat exchange tubes 303 to achieve heat exchange between the liquid and the water source. Compared with traditional electric heating, using water that boils at a temperature not exceeding 100 degrees Celsius for slow heating is gentler, avoids damaging the raw material components in the liquid, and increases safety. The second state is for cooling lubricating oil. In this case, the water source in the water tank 201... The water source is low-temperature water (temperature below 20℃ and above 0℃), and the water level in the water tank 201 is higher than that in the main pipe 301 but lower than that in the branch heat exchanger pipe 303. This reduces the amount of water used and saves water. At the same time, when the main pipe 301 is driven to rotate by the rotating mechanism 401, the branch heat exchanger pipe 303 will continuously move out of the water source and into the water source. During this process, because the temperature of the lubricating oil in the branch heat exchanger pipe 303 is high, the temperature of the branch heat exchanger pipe 303 will be higher than that of the surrounding environment, causing the water stains attached to the branch heat exchanger pipe 303 to evaporate. The principle of evaporative cooling can improve the heat dissipation efficiency. In this device, a mesh cover 5 is set on the water tank 201. On the one hand, it can prevent debris from falling into the water tank 201 and improve safety. On the other hand, the fan 501 on the mesh cover 5 can blow air on the branch heat exchanger pipe 303 to improve the evaporation efficiency, thereby further increasing the heat dissipation efficiency and increasing the functionality of the device.

[0023] like Figures 1-4As shown, the present invention discloses the structure and number of main flow pipes 301, increasing the length of the lubricating oil flow path and further ensuring the heat exchange effect. Multiple main flow pipes 301 are connected in pairs via U-shaped connecting pipe assemblies 6. The ends of two main flow pipes 301 near the two ends of the flow tank 2 are connected to an inlet pipe 8 and an outlet pipe 9 via bamboo-joint telescopic pipes 7. The multiple main flow pipes 301, connected together by the U-shaped connecting pipe assemblies 6, allow lubricating oil to enter through the inlet pipe 8, then flow through multiple main flow pipes 301 and multiple branch heat exchange pipes 303, and finally exit through the outlet pipe 9. The arrangement of multiple main flow pipes 301 increases the flow path length of the lubricating oil, thereby increasing the contact time between the lubricating oil and the water source. It should also be noted that the main flow pipe 301 connected to the inlet pipe 8 is located near the water inlet end of the flow water tank 2. Because the lubricating oil initially entering the main flow pipe 301 is at a higher or lower temperature, it directly contacts the water source in the water inlet area of ​​the flow water tank 2, which allows for better heat exchange. After passing through each main flow pipe 301, its temperature will decrease or increase stepwise to correspond with the water source temperature in the subsequent areas of the flow water tank 2, thus balancing the overall heat exchange effect.

[0024] like Figures 2-3 The present invention discloses the specific structure of the U-shaped connecting pipe assembly 6, which is more conducive to the turbulent flow of lubricating oil inside and improves the heat exchange effect. The U-shaped connecting pipe assembly 6 includes a connecting frame 601 fixedly connected to both sides of the support frame 1. A U-shaped pipe 602 is fixedly connected to the connecting frame 601. Both ends of the U-shaped pipe 602 are connected to sliding pipes 603 through bamboo-joint telescopic pipes 7. The sliding pipes 603 are slidably installed on the connecting frame 601. The other end of the sliding pipe 603 is connected to the main pipe 301 through a rotating connecting pipe fitting 604. The rotating connecting pipe fitting 604 is an existing rotating pipe connection component, which can connect the main pipe 301. 01 is rotatably connected to the sliding tube 603, while ensuring the sealing between them. Since the sliding tube 603 is slidably installed on the connecting frame 601, it cannot rotate, but can only slide horizontally. With the bamboo joint telescopic tube 7, when the pushing component 402 drives it, the main tube 301 can move back and forth between the two U-shaped tubes 602. Through the setting of the rotating connecting pipe 604 between the sliding tube 603 and the main tube 301, the main tube 301 can rotate relative to the sliding tube 603, thereby realizing the synchronous rotation and reciprocating movement of this device and ensuring the smooth operation of the device.

[0025] like Figures 4-5The diagram illustrates the specific structure of the diversion heat exchanger tube 303 of the present invention, which is used to improve heat exchange efficiency. The diversion heat exchanger tube 303 includes four diversion tubes 3031. The four diversion tubes 3031 are arranged in pairs and connected to both sides of the partition block 302 of the main flow tube 301. The diversion tubes 3031 in the same group are arranged in a V-shape, and their ends are connected to the diversion tubes 3031 in another group by U-shaped guide tubes 3032. The V-shaped structure formed by the two diversion tubes 3031 in the same group has one end in contact with each other and connected to the main flow tube 301, while the other end is separated and connected to different U-shaped guide tubes 3032. This allows the main flow tube to... A stirring blade structure is formed around the periphery of pipe 301, and the stirring blade has an inclined angle. When the main pipe 301 rotates, it can tumble and stir the water in the flow water tank 2, improve the mixing efficiency of the water in the tank, ensure the overall temperature balance, and thus ensure the heat exchange effect. It should be noted that the inner diameter of the branch pipe 3031 is much smaller than the inner diameter of the main pipe 301. When the lubricating oil flows from the main pipe 301 to the branch pipe 3031, it will flow from the large diameter end to the small diameter end and be divided into two liquid streams. On the one hand, it increases the flow rate, and on the other hand, it can increase the contact area with the water in the flow water tank 2, thereby improving the heat exchange efficiency.

[0026] like Figures 4-5 As shown, the specific structure of the U-shaped guide tube 3032 of the present invention is disclosed. Multiple annular heat sinks 3033 are arrayed on the outer side of the U-shaped guide tube 3032 along its length direction. The addition of annular heat sinks 3033 on its outer side increases the contact area with the water source in the circulating water tank 2. On the one hand, it can improve the stirring effect and ensure water temperature balance. On the other hand, when heating the lubricating oil, the increased contact area can be used to improve the heating efficiency. Furthermore, when the lubricating oil cools down, the added annular heat sinks 3033 can be used as an additional evaporation part to improve the evaporative cooling effect, thereby improving the heat dissipation efficiency.

[0027] like Figures 2-3The specific structure of the rotating mechanism 401 of the present invention is disclosed, which is used to ensure smooth rotation. The rotating mechanism 401 includes wide toothed gears 4011 fixedly connected to both ends of the main flow pipe 301. Multiple auxiliary shafts 4012 are rotatably installed on both sides of the flow water tank 2. Short toothed gears 4013 that mesh with the wide toothed gears 4011 are fixedly connected to the auxiliary shafts 4012. The auxiliary shafts 4012 on the same side are connected by a synchronous belt. A drive motor 4014 that is connected to one of the auxiliary shafts 4012 is fixedly installed on the support frame 1. When the drive motor 4014 drives the auxiliary shaft 4012 to rotate, it drives the other auxiliary shafts 4012 to rotate together. At the same time, the meshing of the short toothed gears 4013 with the wide toothed gears 4011 realizes the synchronous rotation of multiple main flow pipes 301. It should be noted that the auxiliary shafts 4012 are set on both sides of the flow water tank 2 and connected by a synchronous belt, which can increase the stability of the transmission and ensure the smooth realization of the synchronous rotation of the main flow pipes 301.

[0028] like Figure 2 , Figure 3 and Figure 6 The specific structure of the pusher 402 of the present invention is disclosed. Compared with the traditional driving method, this structure is more cost-effective and improves linkage. The pusher 402 includes positioning rings 4021 and support plates 4022 fixedly connected to both sides of the flow channel 2. There are multiple positioning rings 4021 and they are sleeved on the outside of the main flow pipe 301. A fixing ring 4023 is fixedly connected to the support plate 4022 and is disposed opposite to the positioning rings 4021. An inclined annular guide groove 4024 is constructed between the positioning rings 4021 and the fixing rings 4023. A guide rod that movably passes through the annular guide groove 4024 is constructed on the main flow pipe 301. 4025. When the device is running, the drive motor 4014 drives the main pipe 301 to rotate. At this time, the guide rod 4025 on the main pipe 301 will move along the annular guide groove 4024. The annular guide groove 4024 is an inclined annular shape, so the main pipe 301 can rotate and move horizontally at the same time. It should be noted that the distance between the two opposite horizontal ends of the annular guide groove 4024 is the distance that the main pipe 301 can move horizontally. The width of the wide toothed gear 4011 needs to be greater than this distance. The meshing path of the short toothed gear 4013 and the wide toothed gear 4011 is the shape of the annular guide groove 4024.

[0029] like Figures 5-6As shown, the specific structure of the positioning ring 4021, the fixed ring 4023, and the guide rod 4025 of the present invention is disclosed. The opposite edges of the positioning ring 4021 and the fixed ring 4023 are both constructed with arc corners. The arc parts can reduce the contact area between the positioning ring 4021, the fixed ring 4023, and the circumferential side of the guide rod 4025, thereby reducing the friction between them and ensuring the smooth sliding of the guide rod 4025. Reducing the friction can reduce the wear of the guide rod 4025 and improve its service life. The end of the guide rod 4025 is threadedly connected to a limiting ball 40251. The setting of the limiting ball 40251 is used to increase the contact area with the positioning ring 4021 and the fixed ring 4023. The limiting ball 40251 forms a two-point or three-point contact between the guide rod 4025 and the positioning ring 4021 and the fixed ring 4023, which increases the stability during its movement, and does not affect the friction of the circumferential side of the guide rod 4025, thus not affecting its service life.

[0030] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rotary heat exchange device, characterized in that, include: A support frame (1) is fixedly connected to a water trough (2); The heat exchange tube (3) includes a main pipe (301), which rotates through the flow water tank (2) and is arranged along its width direction. The main pipe (301) has multiple partition blocks (302) in the middle. Multiple branch heat exchange tubes (303) are connected to the main pipe (301). The two ends of the branch heat exchange tubes (303) are respectively connected to the two sides of the partition block (302). The rotating push synchronization component (4) includes a rotating mechanism (401) mounted on the support frame (1), the rotating mechanism (401) is used to drive the main pipe (301) to rotate, and a push component (402) is installed between the flow water tank (2) and the support frame (1) to drive the main pipe (301) to move back and forth along the width direction of the flow water tank (2).

2. The rotary heat exchanger according to claim 1, characterized in that, The circulating water tank (2) includes a water storage tank (201) fixedly connected in the support frame (1). The water storage tank (201) is fixedly connected to water pipes (202) at both ends along its length. A water pump (203) is fixedly connected in the support frame (1) and connected to one of the water pipes (202).

3. A rotary heat exchange device according to claim 2, characterized in that, The upper end of the water tank (201) is open and a mesh cover (5) for covering the water tank (201) is hinged on one side. A blower (501) is connected to the upper side of the mesh cover (5).

4. A rotary heat exchange device according to claim 1, characterized in that, There are multiple main pipes (301), and the multiple main pipes (301) are interconnected in pairs through U-shaped connecting pipe assembly (6). The ends of the two main pipes (301) near the two ends of the flow water tank (2) are connected to the inlet pipe (8) and the outlet pipe (9) through bamboo joint telescopic pipe (7).

5. A rotary heat exchange device according to claim 4, characterized in that, The U-shaped connecting pipe assembly (6) includes a connecting frame (601) fixedly connected to both sides of the support frame (1). A U-shaped pipe (602) is fixedly connected to the connecting frame (601). Both ends of the U-shaped pipe (602) are connected to a sliding pipe (603) through a bamboo-joint telescopic pipe (7). The sliding pipe (603) is slidably installed on the connecting frame (601). The other end of the sliding pipe (603) is connected to the main pipe (301) through a rotating connecting pipe fitting (604).

6. A rotary heat exchange device according to claim 1, characterized in that, The heat exchange tube (303) includes four branch tubes (3031). The four branch tubes (3031) are arranged in pairs and connected to both sides of the partition block (302) of the main tube (301). The branch tubes (3031) in the same group are arranged in a V shape and the ends are connected to the branch tubes (3031) in another group by a U-shaped guide tube (3032).

7. A rotary heat exchange device according to claim 6, characterized in that, The outer side of the U-shaped guide tube (3032) is constructed with multiple annular heat sinks (3033) arranged along its length.

8. A rotary heat exchange device according to claim 1, characterized in that, The rotating mechanism (401) includes wide toothed gears (4011) fixedly connected to both ends of the main flow pipe (301). Multiple auxiliary shafts (4012) are rotatably mounted on both sides of the flow channel (2). Short toothed gears (4013) that mesh with the wide toothed gears (4011) are fixedly connected to the auxiliary shafts (4012). The auxiliary shafts (4012) on the same side are connected by synchronous belt drive. A drive motor (4014) that is drively connected to one of the auxiliary shafts (4012) is fixedly mounted on the support frame (1).

9. A rotary heat exchange device according to claim 8, characterized in that, The pushing component (402) includes a positioning ring (4021) and a support plate (4022) fixedly connected to both sides of the flow channel (2). There are multiple positioning rings (4021) and they are sleeved on the outside of the main flow pipe (301). A fixing ring (4023) is fixedly connected to the support plate (4022) and is arranged opposite to the positioning ring (4021). An inclined annular guide groove (4024) is constructed between the positioning ring (4021) and the fixing ring (4023). A guide rod (4025) that moves through the annular guide groove (4024) is constructed on the main flow pipe (301).

10. A rotary heat exchange device according to claim 7, characterized in that, The positioning ring (4021) and the fixing ring (4023) have rounded corners at their opposite ends, and the guide rod (4025) is threadedly connected to a limit ball (40251).

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