Energy-saving plate-fin heat exchanger

Abstract

This invention belongs to the field of heat exchanger technology and discloses an energy-saving plate-fin heat exchanger, including a heat exchanger assembly. By setting up a pressure-reducing assembly and a buffer assembly, when liquid is output from the threaded tube, the liquid will preferentially impact several pressure-reducing plates, causing the ends of each pressure-reducing plate to expand outwards. This pushes a connecting rod to squeeze the gas storage pipe. Gas will enter the gas tank through the lowest pressure plate and the gas pipe, preferentially pushing the sealing plate to compress the spring. However, the inner diameter of the slot on the gas pipe connecting to the gas tank is smaller than the diameter of the sealing plate, which makes the air entering the sealing plate slower. This increases the impact force required for the pressure-reducing plates to move, and also means that the impact force from the liquid will be continuously offset. After passing through the pressure-reducing assembly, the liquid will also contact the threaded plates and be blocked by them. After passing through the threaded plates, the liquid will also be blocked by a baffle, further reducing the impact force.

Description

Technical Field

[0001] This invention belongs to the field of heat exchanger technology, specifically an energy-saving plate-fin heat exchanger. Background Technology

[0002] Plate-fin heat exchangers are a type of heat exchange equipment widely used in industrial manufacturing. They utilize fins made of thin metal sheets to increase the heat exchange area. These fins are sandwiched between two plates, forming channels through which fluid flows and exchanges heat. In industrial manufacturing processes, heat exchangers are generally used for cooling or heating gases or liquids. However, the injection machines used in industry typically operate at high pressures. Because the fins used inside plate-fin heat exchangers are relatively thin, they cannot withstand excessive pressure; otherwise, the fins will be damaged by fluid impact, leading to a shorter service life. Therefore, we provide an energy-saving plate-fin heat exchanger. Summary of the Invention

[0003] To address the problems mentioned in the background section, this invention provides an energy-saving plate-fin heat exchanger that solves the problem that the high pressure released by industrial injection machines can damage the fins in the plate-fin heat exchanger.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an energy-saving plate-fin heat exchanger, comprising a heat exchanger assembly, and further comprising,

[0005] A threaded pipe is threaded onto the side feed pipe of the heat exchanger assembly, and a nut is threaded onto the threaded pipe.

[0006] A buffer assembly with threads mounted on the surface of a nut, the buffer assembly being connected to a threaded pipe via the nut, and the buffer assembly being connected to the side of a heat exchanger assembly via a support block;

[0007] The buffer assembly includes a threaded tube two that is threaded to the surface of the nut;

[0008] The buffer assembly also includes a protective ring fixed inside the threaded tube, the inside of the protective ring is provided with a threaded plate, the middle of the threaded plate is provided with a reinforcing shaft, and a baffle is fixedly installed on the reinforcing shaft;

[0009] A step-down component is installed on the buffer component;

[0010] The pressure-reducing assembly includes a rubber ring fixed inside the threaded tube II. Several pressure-reducing plates are hinged at equal angles around the inside of the threaded tube II. A connecting rod is slidably installed on the pressure-reducing plate. Several gas storage pipes and pressure plates are respectively arranged at equal angles around the outer periphery of the threaded tube II. Several rubber strips are arranged at equal intervals on the inner wall of the pressure-reducing plate. The lowest pressure plate is connected to the gas tank through a gas pipe. A sealing plate is connected to the inside of the gas tank through a spring.

[0011] Descaling components are installed inside the threaded pipe.

[0012] Preferably, the number of pressure reducing plates, connecting rods, and air storage pipes are the same, and every two air storage pipes are connected by a pressure plate. The pressure plate is fixed to the outside of the threaded pipe, and the connecting rod moves inside the air storage pipe and is in a sealed state inside.

[0013] Preferably, the sealing plate moves within the gas tank via a threaded groove on the inner wall of the gas tank, the outer periphery of the sealing plate is made of rubber, a slot is provided on the side of the gas tank away from the gas pipe, and the gas pipe is fixed to the pressure plate.

[0014] Preferably, the sides of several pressure reducing plates are fitted together to form a cone shape, and the rubber ring is fitted to the conical circumferential surface of the several pressure reducing plates.

[0015] Preferably, the buffer assembly further includes a docking block fixed to the bottom of the second threaded tube, the gas tank is fixedly inserted through the docking block, the docking block is sleeved on the support block, the second threaded tube is threadedly connected to the first threaded tube by a nut, and the outer periphery and inner wall of the second threaded tube are provided with threaded grooves.

[0016] Preferably, the diameter of the baffle is smaller than the inner diameter of the threaded tube, the threaded plate is made of metal, and the buffer assembly further includes a hexagonal groove that penetrates the middle of the baffle and extends into the interior of the reinforcing shaft.

[0017] Preferably, the descaling assembly includes a reinforcing ring and a speed-changing block with the bearing installed inside the threaded pipe. A hexagonal block is fixedly mounted on the side of the reinforcing ring, and a filter plate is provided at equal angles around the outer periphery of the speed-changing block.

[0018] Preferably, the hexagonal block is located inside the hexagonal slot, the speed-changing block is fixedly connected to the reinforcing ring, and the speed-changing block is composed of several metal blocks, each of which has a limiting groove.

[0019] Preferably, the descaling assembly further includes a drive shaft movably disposed inside the speed change block. The drive shaft has a plurality of spring telescopic plates arranged at equal angles around its outer periphery. One end of the drive shaft is provided with a turbine, which is connected to the speed change block via a tension spring.

[0020] Preferably, the number of spring telescopic plates is equal to the number of limiting grooves, the spring telescopic plates move inside the limiting grooves, and the interior of the speed-changing block is frustum-shaped.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] This invention, through the setting of pressure-reducing components and buffer components, ensures that when liquid is output from the threaded tube, it will preferentially impact several pressure-reducing plates, causing the ends of each pressure-reducing plate to expand outwards. This pushes the connecting rod to squeeze the gas storage pipe, and the gas will enter the interior of the gas tank through the lowest pressure plate and the gas pipe. It will preferentially push the sealing plate to compress the spring. However, the inner diameter of the slot on the gas pipe that connects to the gas tank is smaller than the diameter of the sealing plate. This makes the air enter the sealing plate more slowly, and the spring force will increase the force required for the sealing plate to move. The impact force required for the pressure-reducing plate to move increases, which means that the impact force brought by the liquid will be continuously offset. After passing through the pressure-reducing components, the liquid will also come into contact with the threaded plate and be blocked by it. After passing through the threaded plate, the liquid will also be blocked by the baffle, further reducing the impact force.

[0023] This invention, through the coordinated arrangement of descaling and buffer components, ensures that when the liquid flow rate is too slow, the drive shaft will not move and will stretch the tension spring, allowing the filter plate to continuously rotate and filter, thus preventing impurities in the liquid from remaining inside the heat exchanger assembly. When the flow rate is too high, the turbine will be impacted and moved, causing displacement of the drive shaft and the structures mounted on it. When the turbine is too far away, it means that the turbine rotates faster. The faster the liquid flows, the less likely impurities are to remain inside the heat exchanger assembly. The increased rotation speed also makes it easier for the movable end of the spring telescopic plate to disengage from the limiting groove, and the speed-changing block will no longer be driven to rotate by the turbine. Since the filter plate is flat, the rotation speed of the speed-changing block and the filter plate is reduced when the liquid flows and impacts the filter plate without power. The high-velocity liquid can flush the impurities on the filter plate and discharge them through the outlet pipe of the heat exchanger assembly, thus achieving automatic cleaning and reducing subsequent maintenance time.

[0024] This invention, through the combination of a buffer assembly and a descaling assembly, allows for easy disassembly of threaded pipes 1 and 2 when the internal structures of threaded pipe 2 and threaded pipe 1 need to be disassembled for cleaning or maintenance. This is achieved by simply rotating the nut. When assembling the buffer assembly, the mating block is first placed on the support block, then the hexagonal block is inserted into the hexagonal groove, and finally, the nut is tightened to secure threaded pipe 2 and threaded pipe 1. This makes the installation of the buffer assembly simpler and easier, and also avoids misalignment of the threads of threaded pipe 2 and threaded pipe 1, which could lead to thread stripping during tightening. Furthermore, this makes the device more convenient to use. Attached Figure Description

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

[0026] Figure 2 This is a schematic diagram of the heat exchanger assembly of the present invention and its upper structure.

[0027] Figure 3 This is a schematic cross-sectional view of the internal structure of threaded tube one and threaded tube two of the present invention;

[0028] Figure 4 This is a schematic diagram of the fit between the threaded tube 2 and the pressure reducing plate structure of the present invention;

[0029] Figure 5 This is a schematic diagram showing the positions of the pressure reducing plate and the threaded plate of the present invention;

[0030] Figure 6 This is a schematic cross-sectional view of the mating structure between the threaded tube 2 and the connecting rod of the present invention;

[0031] Figure 7 This is a schematic cross-sectional view of the internal connection between the gas tank and the pressure plate of the present invention;

[0032] Figure 8 This is a schematic diagram of the structure and fit between the threaded tube 2 and the descaling assembly of the present invention;

[0033] Figure 9 This is a schematic diagram of the fit between the hexagonal slot and the hexagonal block structure of the present invention;

[0034] Figure 10 This is a schematic diagram showing the positional relationship between the speed-changing block and the drive shaft of the present invention;

[0035] Figure 11 This is a schematic diagram of the explosion of a portion of the speed-changing block in this invention.

[0036] In the diagram: 1. Heat exchanger assembly; 2. Threaded pipe one; 3. Nut; 4. Pressure reducing assembly; 41. Rubber ring; 42. Pressure reducing plate; 43. Connecting rod; 44. Gas storage pipe; 45. Pressure plate; 46. Rubber strip; 47. Gas pipe; 48. Gas tank; 49. Spring; 40. Sealing plate; 5. Buffer assembly; 51. Threaded pipe two; 52. Protective ring; 53. Threaded plate; 54. Reinforcing shaft; 55. Baffle; 56. Connecting block; 57. Hexagonal groove; 6. Support block; 7. Descaling assembly; 71. Speed ​​changing block; 72. Hexagonal block; 73. Filter plate; 74. Tension spring; 75. Turbine; 76. Limiting groove; 77. Drive shaft; 78. Reinforcing ring; 79. Spring telescopic plate. Detailed Implementation

[0037] 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.

[0038] like Figures 1 to 11As shown, the present invention provides an energy-saving plate-fin heat exchanger, including a heat exchanger assembly 1, and further comprising,

[0039] A threaded pipe 2 is threaded onto the side feed pipe of heat exchanger assembly 1, and a nut 3 is threaded onto the threaded pipe 2.

[0040] A buffer assembly 5 is threaded onto the surface of a nut 3. The buffer assembly 5 is connected to a threaded pipe 2 via a nut 3. The buffer assembly 5 is connected to the side of a heat exchanger assembly 1 via a support block 6.

[0041] The buffer assembly 5 includes a threaded tube 51 that is threaded to the surface of the nut 3;

[0042] The buffer assembly 5 also includes a protective ring 52 fixed inside the threaded tube 51. The protective ring 52 has a threaded plate 53 inside, a reinforcing shaft 54 ​​in the middle of the threaded plate 53, and a baffle 55 fixed on the reinforcing shaft 54.

[0043] The step-down component 4 is installed on the buffer component 5;

[0044] The pressure reducing assembly 4 includes a rubber ring 41 fixed inside the threaded tube 51. Several pressure reducing plates 42 are hinged at equal angles around the inside of the threaded tube 51. A connecting rod 43 is slidably installed on the pressure reducing plate 42. Several gas storage pipes 44 and pressure plates 45 are arranged at equal angles around the outer periphery of the threaded tube 51. Several rubber strips 46 are arranged at equal intervals on the inner wall of the pressure reducing plate 42. The lowest pressure plate 45 is connected to the gas tank 48 through a gas pipe 47. A sealing plate 40 is connected inside the gas tank 48 through a spring 49.

[0045] Descaling component 7 is installed inside threaded pipe 2.

[0046] The number of pressure reducing plate 42, connecting rod 43 and air storage pipe 44 are the same. Every two air storage pipes 44 are connected by a pressure plate 45. The pressure plate 45 is fixed to the outside of the threaded pipe 51. The connecting rod 43 moves inside the air storage pipe 44 and is in a sealed state inside.

[0047] The above solution is adopted as follows: First, connect the threaded pipe 2 51 to the input equipment in the factory, and then connect another pipe to the discharge pipe of the heat exchanger assembly 1 to facilitate subsequent processing.

[0048] When liquid is introduced into the threaded pipe 51, the liquid will preferentially impact the rubber ring 41 and several pressure reducing plates 42 and rubber strips 46. The impact force of the liquid will cause the ends of each pressure reducing plate 42 to expand outward, thereby pushing the connecting rod 43 to squeeze the gas storage pipe 44. Since the gas storage pipe 44 and the pressure plate 45 are interconnected, the gas will enter the interior of the gas tank 48 through the lowest pressure plate 45 and the air pipe 47. It should be noted that after the gas enters the interior, it will preferentially push the sealing plate 40 to compress the spring 49, thereby keeping the air inside the gas tank 48. However, since the elasticity of the spring 49 will increase the force required for the sealing plate 40 to move, and the inner diameter of the slot of the air pipe 47 used to connect the gas tank 48 is smaller than the diameter of the sealing plate 40, this will make the air enter the sealing plate 40 more slowly, and the impact force required for the pressure reducing plate 42 to move will increase. At the same time, it means that the impact force brought by the liquid will be continuously offset by a part. Finally, the liquid passes through the gap between several pressure reducing plates 42.

[0049] During the continuous input of liquid, when the liquid touches the rubber strip 46, it will be blocked and become turbulent, thereby reducing the impact force of the liquid flow. In the time it takes for the spring 49 to go from its initial position to being compressed to its extreme, the liquid can fill the interior of the heat exchanger assembly 1, thereby reducing the impact force on the metal fins inside the heat exchanger assembly 1.

[0050] It should also be noted that after the liquid passes through the pressure reducing component 4, it will come into contact with the threaded plate 53 and be blocked by it. After the liquid passes through the threaded plate 53, it will also be blocked by the baffle 55, which further reduces the impact force.

[0051] like Figure 7 As shown, the sealing plate 40 moves inside the gas tank 48 through a threaded groove provided on the inner wall of the gas tank 48. The outer periphery of the sealing plate 40 is made of rubber. A slot is provided on the side of the gas tank 48 away from the gas pipe 47. The gas pipe 47 is fixedly mounted on the pressure plate 45.

[0052] The above scheme is adopted: when the gas pushes the sealing plate 40, it will preferentially rotate and move its position through the threaded groove. The resistance between the threaded groove and the sealing plate 40 will increase the force of the gas pushing the sealing plate 40. The rubber material will ensure that the gas is completely located in the cavity formed between the sealing plate 40 and the gas tank 48, and the gas will not leak. This further increases the force required for the pressure reducing plate 42 to move, thereby indirectly offsetting the impact force brought by the liquid flow.

[0053] like Figure 3 , Figure 4 As shown, the sides of several pressure reducing plates 42 are attached together to form a cone shape, and the rubber ring 41 is attached to the conical circumferential surface of the several pressure reducing plates 42.

[0054] Using the above solution: During the process of liquid being injected into the threaded tube 51, the rubber ring 41 will block and force the liquid to contact the pressure reducing plate 42, thereby allowing the impact force to be better eliminated. The above solution describes the location... Figure 4 The pressure reducing plate 42 in the figure is in the initial state. As shown by the several pressure reducing plates 42 in the figure, the liquid preferentially contacts the inner wall of the pressure reducing plate 42, rather than entering from the hinge between the pressure reducing plate 42 and the threaded pipe 51, which will offset the impact force brought by the liquid flow to a greater extent.

[0055] like Figures 1 to 3 As shown, the buffer assembly 5 also includes a docking block 56 fixedly installed at the bottom of the threaded tube 2 51. The gas tank 48 is fixedly inserted through the docking block 56. The docking block 56 is sleeved on the support block 6. The threaded tube 2 51 is threadedly connected to the threaded tube 1 2 through the nut 3. Threaded grooves are provided on the outer periphery and inner wall of the threaded tube 2 51.

[0056] The hexagonal block 72 is located inside the hexagonal slot 57. The speed-changing block 71 is fixedly connected to the reinforcing ring 78. The speed-changing block 71 is composed of several metal blocks, and each metal block has a limit slot 76.

[0057] The diameter of the baffle 55 is smaller than the inner diameter of the threaded tube 2. The threaded plate 53 is made of metal. The buffer assembly 5 also includes a hexagonal groove 57, which passes through the middle of the baffle 55 and extends into the interior of the reinforcing shaft 54.

[0058] With the above solution: when the device is working, air will enter the sealing plate 40, and the sealing plate 40 is fixed to the threaded pipe 51 by the mating block 56, which makes the sealing plate 40 more stable when it is working.

[0059] It should also be noted that when the internal structure of threaded tube 2 51 and threaded tube 1 2 needs to be disassembled for cleaning or maintenance, threaded tube 1 2 and threaded tube 2 51 can be disconnected by rotating nut 3. The buffer assembly 5 and pressure reducing assembly 4 can be removed as a whole. Then, by rotating threaded tube 1 2, all structures on heat exchanger assembly 1 except support block 6 can be disassembled.

[0060] When the buffer assembly 5 needs to be assembled, the mating block 56 should first be placed on the support block 6, then the hexagonal block 72 should be inserted into the hexagonal groove 57, and then the threaded tube 2 and the threaded tube 1 should be tightened by the nut 3. This makes the installation of the buffer assembly 5 simpler and easier, and at the same time avoids the thread of the threaded tube 2 and the threaded tube 1 being misaligned, which would cause the nut 3 to strip the thread when tightening, thus making the device more convenient to use.

[0061] like Figure 3 , Figures 8 to 11 As shown, the descaling assembly 7 includes a reinforcing ring 78 and a speed-changing block 71 with the bearing installed inside the threaded pipe 2. A hexagonal block 72 is fixedly mounted on the side of the reinforcing ring 78, and a filter plate 73 is arranged at equal angles around the outer periphery of the speed-changing block 71.

[0062] The descaling assembly 7 also includes a drive shaft 77 movably disposed inside the speed change block 71. Several spring telescopic plates 79 are arranged at equal angles around the outer periphery of the drive shaft 77. A turbine 75 is provided at one end of the drive shaft 77. The turbine 75 is connected to the speed change block 71 through a tension spring 74.

[0063] The number of spring telescopic plates 79 is equal to that of the limiting grooves 76. The spring telescopic plates 79 move inside the limiting grooves 76, and the interior of the speed-changing block 71 is frustum-shaped.

[0064] The above scheme is adopted: after the liquid passes through the buffer assembly 5, it will first contact the filter plate 73 and the turbine 75, so that when the liquid impacts the turbine 75, it will drive the turbine 75 to rotate. The turbine 75 will drive the speed change block 71 to rotate through the drive shaft 77, the spring telescopic plate 79 and the limiting groove 76. The speed change block 71 will drive the filter plate 73, which is set at equal angles around its outer periphery, to rotate, so that the filter plate 73 can filter the impurities in the liquid. When the liquid flow rate is too slow, the drive shaft 77 will not move and will stretch the tension spring 74, so that the filter plate 73 can continue to rotate and filter, thereby preventing impurities in the liquid from remaining inside the heat exchanger assembly 1 and reducing the subsequent maintenance time.

[0065] When the flow rate is too high, the turbine 75 will be impacted and moved, causing the tension spring 74 to be stretched, but if Figure 10 The turbine 75 and drive shaft 77 shown, and the drive shaft 77 and the structure mounted on it, all undergo displacement, as shown in the figure. Figure 11 The spring telescopic plate 79 and the limiting groove 76 shown in the diagram, due to the telescopic nature of the spring telescopic plate 79, when the impact force of the liquid flow pushes the turbine 75 too far, it means that the turbine 75 rotates faster. The faster the liquid flow speed, the less likely impurities inside it will remain inside the heat exchanger assembly 1. At the same time, the increased rotation speed also makes it easier for the movable end of the spring telescopic plate 79 to disengage from the limiting groove 76. The speed-changing block 71 will no longer be driven to rotate by the turbine 75. Since the filter plate 73 is flat, this makes the rotation speed of the speed-changing block 71 and the filter plate 73 decrease when the liquid flow impacts the filter plate 73 without power. The high-velocity liquid can wash away the impurities on the filter plate 73 and discharge them through the discharge pipe of the heat exchanger assembly 1, thereby achieving the purpose of automatic cleaning and reducing the time for subsequent maintenance.

[0066] Working principle and usage process of this invention:

[0067] First, connect the threaded pipe 2 51 to the input equipment in the factory, and then connect another pipe to the discharge pipe of the heat exchanger assembly 1 to facilitate subsequent processing.

[0068] When liquid is introduced into the threaded pipe 51, the liquid will preferentially impact the rubber ring 41 and several pressure reducing plates 42 and rubber strips 46, causing the ends of each pressure reducing plate 42 to expand outward, thereby pushing the connecting rod 43 to squeeze the gas storage pipe 44. The gas will enter the gas tank 48 through the lowest pressure plate 45 and the gas pipe 47, and preferentially push the sealing plate 40 to compress the spring 49. However, due to the elasticity of the spring 49 and the fact that the inner diameter of the slot of the gas pipe 47 used to connect the gas tank 48 is smaller than the diameter of the sealing plate 40, the air enters the sealing plate 40 more slowly, and the impact force required for the pressure reducing plate 42 to move increases. Finally, the liquid passes through the gap between several pressure reducing plates 42.

[0069] After the liquid passes through the pressure reducing component 4, it will come into contact with the threaded plate 53 and be blocked by it. After the liquid passes through the threaded plate 53, it will also be blocked by the baffle 55.

[0070] Then, it contacts the filter plate 73 and the turbine 75, so that when the liquid impacts the turbine 75, it drives the turbine to rotate. The turbine 75 drives the speed change block 71 to rotate through the drive shaft 77, the spring telescopic plate 79 and the limiting groove 76. The speed change block 71 drives the filter plate 73, which is set at equal angles around its outer periphery, to rotate, so that the filter plate 73 filters the impurities in the liquid.

[0071] When the flow rate is too high, the turbine 75 will be impacted and moved, and the drive shaft 77 and the structure mounted on it will be displaced. When the impact force of the liquid flow pushes the turbine 75 too far, it means that the turbine 75 rotates faster. The faster the liquid flow, the less likely impurities will remain inside the heat exchanger assembly 1. The increased rotation speed also makes it easier for the movable end of the spring telescopic plate 79 to disengage from the limit groove 76. The speed-changing block 71 will no longer be driven to rotate by the turbine 75. Since the filter plate 73 is flat, the speed of rotation of the speed-changing block 71 and the filter plate 73 will decrease when the liquid flow impacts the filter plate 73 without power. The high-velocity liquid can wash away the impurities on the filter plate 73 and discharge them through the outlet pipe of the heat exchanger assembly 1, thus achieving the purpose of automatic cleaning and reducing the time for subsequent maintenance.

[0072] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0073] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving plate-fin heat exchanger, comprising a heat exchanger assembly (1), characterized in that: It also includes, A threaded pipe (2) is threaded onto the feed pipe on the side of the heat exchanger assembly (1), and a nut (3) is threaded onto the threaded pipe (2); A buffer assembly (5) is threaded onto the surface of a nut (3). The buffer assembly (5) is connected to a threaded pipe (2) via a nut (3). The buffer assembly (5) is connected to the side of a heat exchanger assembly (1) via a support block (6). The buffer assembly (5) includes a threaded tube (51) threaded to the surface of the nut (3). The buffer assembly (5) also includes a protective ring (52) fixed inside the threaded tube (51). The protective ring (52) has a threaded plate (53) inside. A reinforcing shaft (54) is provided in the middle of the threaded plate (53). A baffle (55) is fixed on the reinforcing shaft (54). The step-down component (4) is disposed on the buffer component (5); The pressure-reducing assembly (4) includes a rubber ring (41) fixed inside the threaded tube (51). Several pressure-reducing plates (42) are hinged at equal angles in the circumferential direction inside the threaded tube (51). A connecting rod (43) is slidably installed on the pressure-reducing plate (42). Several gas storage pipes (44) and pressure plates (45) are respectively arranged at equal angles in the circumferential direction on the outer periphery of the threaded tube (51). Several rubber strips (46) are arranged at equal intervals on the inner wall of the pressure-reducing plate (42). The pressure plate (45) at the bottom end is connected to the gas tank (48) through a gas pipe (47). A sealing plate (40) is connected inside the gas tank (48) through a spring (49). Descaling assembly (7) installed inside threaded pipe (2).

2. The energy-saving plate-fin heat exchanger according to claim 1, characterized in that: The number of pressure reducing plate (42), connecting rod (43) and air storage pipe (44) is the same. Every two air storage pipes (44) are connected by a pressure plate (45). The pressure plate (45) is fixed to the outside of the threaded pipe (51). The connecting rod (43) moves inside the air storage pipe (44) and is sealed inside.

3. The energy-saving plate-fin heat exchanger according to claim 1, characterized in that: The sealing plate (40) moves inside the gas tank (48) through a threaded groove provided on the inner wall of the gas tank (48). The outer periphery of the sealing plate (40) is made of rubber. The gas tank (48) has a slot on the side away from the gas pipe (47). The gas pipe (47) is fixed on the pressure plate (45).

4. The energy-saving plate-fin heat exchanger according to claim 1, characterized in that: The sides of several pressure reducing plates (42) are attached to each other to form a cone shape, and the rubber ring (41) is attached to the conical circumference of the several pressure reducing plates (42).

5. The energy-saving plate-fin heat exchanger according to claim 1, characterized in that: The buffer assembly (5) also includes a docking block (56) fixedly mounted at the bottom of the threaded tube two (51). The gas tank (48) is fixedly inserted through the docking block (56). The docking block (56) is sleeved on the support block (6). The threaded tube two (51) is threadedly connected to the threaded tube one (2) through a nut (3). The outer periphery and inner wall of the threaded tube two (51) are provided with threaded grooves.

6. The energy-saving plate-fin heat exchanger according to claim 5, characterized in that: The diameter of the baffle (55) is smaller than the inner diameter of the threaded tube (2), the threaded plate (53) is made of metal, and the buffer assembly (5) also includes a hexagonal groove (57), which penetrates the middle of the baffle (55) and extends into the interior of the reinforcing shaft (54).

7. The energy-saving plate-fin heat exchanger according to claim 6, characterized in that: The descaling assembly (7) includes a reinforcing ring (78) and a speed-changing block (71) with the bearing installed inside the threaded pipe (2). The reinforcing ring (78) has a hexagonal block (72) fixed on its side, and the speed-changing block (71) has a filter plate (73) arranged at equal angles around its outer periphery.

8. The energy-saving plate-fin heat exchanger according to claim 7, characterized in that: The hexagonal block (72) is located inside the hexagonal slot (57). The speed-changing block (71) is fixedly connected to the reinforcing ring (78). The speed-changing block (71) is composed of several metal blocks, and each metal block has a limiting groove (76).

9. The energy-saving plate-fin heat exchanger according to claim 8, characterized in that: The descaling assembly (7) also includes a drive shaft (77) movably disposed inside the speed change block (71). The drive shaft (77) has a plurality of spring telescopic plates (79) arranged at equal angles around its outer periphery. A turbine (75) is provided at one end of the drive shaft (77), and the turbine (75) is connected to the speed change block (71) through a tension spring (74).

10. The energy-saving plate-fin heat exchanger according to claim 9, characterized in that: The number of spring telescopic plates (79) is equal to that of the limiting grooves (76). The spring telescopic plates (79) move inside the limiting grooves (76). The interior of the speed-changing block (71) is frustum-shaped.

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