Efficient energy-saving air separation heat exchanger and using method

Abstract

The invention relates to the field of heat exchangers, in particular to an efficient and energy-saving air separation heat exchanger and a using method.The efficient and energy-saving air separation heat exchanger comprises a spiral heat exchange pipe, the spiral heat exchange pipe is in a double-spiral shape, the two ends of the spiral heat exchange pipe fixedly communicate with a liquid inlet pipe and a liquid outlet pipe correspondingly, and a supporting seat is arranged below the spiral heat exchange pipe; two first heat exchange assemblies for exchanging heat from top to bottom and two second heat exchange assemblies for exchanging heat from bottom to top are arranged above the supporting seat, and a first water inlet pipe of the first heat exchange assemblies and a second water inlet pipe of the second heat exchange assemblies are connected through cold water discharge pipes correspondingly; and the heated warm water is converged into the warm water return pipe through the first water drainage pipe and the second water drainage pipe to realize centralized recovery, so that heat exchange waste heat which is originally wasted is converted into heat energy which can be reutilized, ineffective loss of energy is avoided, the overall operation energy consumption of the air separation equipment is greatly reduced, and the air separation equipment conforms to the development trend of efficient and energy-saving industrial equipment.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger technology, specifically to a high-efficiency and energy-saving air separation heat exchanger and its usage method. Background Technology

[0002] Air separation equipment uses air as raw material, transforms it into a liquid state through compression and deep freezing, and then gradually separates inert gases such as oxygen, nitrogen, and argon from the liquid air through distillation. This equipment plays an extremely important role in industrial production and is widely used in many industries such as steel, chemical, electronics, and medical. The thermal balance of air separation equipment is achieved through refrigeration and heat exchange systems, making the heat exchange system of air separation equipment extremely important.

[0003] Chinese patent CN 222211332U discloses a heat exchanger for air separation equipment. It uses a heat exchanger to remove heat from liquid air and discharge it to the outside. At the same time, a drive mechanism drives a propeller to rotate, thereby propelling the liquid air to flow to the heat exchanger for heat exchange. This achieves continuous circulation of liquid air in the tank to the heat exchanger, making the heat exchange and cooling of liquid air more uniform and having a better heat exchange and cooling effect.

[0004] In the above scheme, although the flow direction of liquid air is controlled by the rotation of the propeller, thereby achieving gas heat dissipation, the dissipated heat is not effectively utilized, which easily leads to heat loss. In addition, it is difficult to ensure the heat exchange efficiency of liquid air by simply relying on the airflow blowing method.

[0005] Therefore, the present invention provides a high-efficiency and energy-saving air separation heat exchanger and its usage method to solve the above problems. Summary of the Invention

[0006] In view of the above situation and to overcome the defects of the prior art, the present invention provides a high-efficiency and energy-saving air separation heat exchanger and its usage method, so as to solve the problems that the dissipated heat is not effectively utilized, which easily causes heat loss, and that it is difficult to ensure the heat exchange efficiency of liquid air by simply relying on airflow blowing.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] A high-efficiency and energy-saving air separation heat exchanger includes a spiral heat exchange tube, which is double-spiral in shape. An inlet pipe and an outlet pipe are fixedly connected to both ends of the spiral heat exchange tube. A support base is provided below the spiral heat exchange tube. Two first heat exchange components (exchanging heat from top to bottom) and two second heat exchange components (exchanging heat from bottom to top) are arranged above the support base. The two first heat exchange components are spliced ​​together to form a ring structure, and the spiral heat exchange tube is located within the ring structure. A heat-conducting component and a stirring component are provided on both the first and second heat exchange components to assist in heat exchange. A drive component for synchronously adjusting the heat-conducting component and the stirring component is provided on the base.

[0009] Preferably, the first heat exchange component includes a first heat exchange box, a first water inlet pipe is installed on the upper surface of the first heat exchange box, a valve is fixedly connected to the bottom surface of the first heat exchange box, one end of the first water inlet pipe passes through the upper surface of the first heat exchange box and is installed with a diversion pipe, and a nozzle is installed on the diversion pipe.

[0010] Preferably, a level gauge is installed on the first heat exchange box, and the detection end of the level gauge is located inside the first heat exchange box, and a valve is installed on the first drain pipe.

[0011] Preferably, the second heat exchange assembly includes a second heat exchange box, the upper surface of the second heat exchange box is fixedly connected to a second drain pipe, the bottom surface of the second water inlet pipe is fixedly connected to a second water inlet pipe, a support is fixedly connected to the base, and the top of the support is fixedly connected to the first heat exchange box and the second heat exchange box respectively.

[0012] Preferably, both the second water inlet pipe and the first water inlet pipe are connected to the cold water outlet pipe, and the first drain pipe and the second drain pipe are respectively connected to the warm water return pipe.

[0013] Preferably, the heat-conducting assembly includes a shaft seal sleeve embedded in the first heat exchange box and the second heat exchange box. A piston rod is slidably connected in each shaft seal sleeve. One end of the piston rod is fixedly connected to a second heat-conducting plate. Heat-conducting fins are installed on the second heat-conducting plate. Both the second heat-conducting plate and the heat-conducting fins are made of heat-conducting metal material.

[0014] Preferably, the drive assembly includes a motor mounted on a support base, a screw mounted on the output shaft of the motor, a slider threadedly connected to the screw, a hinge rod hinged to the slider, a hinge seat hinged to the hinge rod, and the hinge seat fixedly connected to the other end of the piston rod.

[0015] Preferably, the stirring assembly includes a rotating shaft rotatably connected to the first heat exchange box and the second heat exchange box, a first gear and a stirring blade are mounted on the rotating shaft, a second gear is fixedly connected to the screw and meshes with the first gear, and a mounting base is rotatably connected to the top end of the screw and is fixedly connected to the first heat exchange box and the second heat exchange box.

[0016] Preferably, a first heat-conducting block is provided in both the first heat exchange box and the second heat exchange box. Each first heat-conducting block is fixedly connected with a fixing block arranged at equal intervals, and the end of the fixing block away from the first heat-conducting block is installed on the first heat exchange box and the second heat exchange box.

[0017] A method of using a high-efficiency energy-saving air separation heat exchanger includes the following steps:

[0018] S1. Cold water is transported to the first inlet pipe and the second inlet pipe through the cold water discharge pipe. The cold water in the first heat exchange box is sprayed from top to bottom into the first heat exchange box by the diversion pipe and the nozzle. The cold water in the second heat exchange box gradually spreads upward from the bottom of the second heat exchange box until it is full.

[0019] S2. The heated liquid air is transported to the spiral heat exchange tube through the liquid inlet pipe, and the liquid air exchanges heat in the annular structure formed by the spiral heat exchange tube and the first heat exchange box.

[0020] S3. The output shaft of the motor drives the screw to rotate, and the slider moves on the screw. Then, the piston rod moves laterally and reciprocally with the help of the hinge rod and the hinge seat. When the second heat-conducting plate is attached to the spiral heat exchange tube, the heat exchange between the liquid and air in the spiral heat exchange tube is accelerated. The screw drives the rotating shaft to rotate through the second gear and the first gear, so that the rotating shaft stirs the liquid in the first heat exchange box and the second heat exchange box with the help of the stirring blade.

[0021] S4. The heat-exchanged liquid air is discharged into the subsequent air circuit breaker through the liquid outlet pipe, while the liquid that has undergone heat exchange in the first and second heat exchange boxes will be transported to the warm water return pipe through the second drain pipe and the first drain pipe.

[0022] The beneficial effects of this invention are as follows:

[0023] 1. The cold water discharge pipe is connected to the first inlet pipe of the first heat exchange component and the second inlet pipe of the second heat exchange component respectively. After exchanging heat with the liquid air in the spiral heat exchange tube, the heated warm water is collected into the warm water return pipe through the first drain pipe and the second drain pipe to achieve centralized recovery. The waste heat of the heat exchange is converted into heat energy that can be reused, avoiding ineffective energy loss and greatly reducing the overall operating energy consumption of the air separation equipment, which is in line with the development trend of high-efficiency and energy-saving industrial equipment.

[0024] 2. By adopting a double-helix spiral heat exchange tube, the inner and outer double-layer structure significantly increases the contact area between liquid air and heat exchange medium, extending the heat exchange path. Furthermore, the first and second heat exchange components are spliced ​​into a ring structure, which fully wraps the spiral heat exchange tube, realizing bidirectional and multiple heat exchange and avoiding the problem of insufficient local heat exchange. By setting up heat-conducting components, the first heat-conducting block, and the fixing block, heat conduction is enhanced by a close-fitting heat transfer method. The stirring component, driven by the driving component, stirs the heat exchange liquid, accelerating the flow rate of the heat exchange liquid and avoiding the decrease in heat exchange efficiency caused by local heating of the heat exchange liquid.

[0025] 3. By setting up a drive component, the distance between the second heat-conducting plate and the spiral heat exchange tube can be adjusted by the piston rod to adapt to different heat exchange requirements. It can also drive the stirring blade to rotate and accelerate the flow of heat exchange fluid, simplifying the structure and saving power consumption. The first heat exchange component is equipped with a level gauge and a valve. The level gauge can monitor the heat exchange fluid level in real time to ensure that the heat exchange fluid always covers the uppermost spiral heat exchange tube. The valve can accurately control the drainage volume to avoid affecting the heat exchange effect due to excessively high or low liquid levels, thus improving operational stability. Attached Figure Description

[0026] Figure 1 The three-dimensional representation of the present invention Figure 1 .

[0027] Figure 2 The three-dimensional representation of the present invention Figure 2 .

[0028] Figure 3 This is the front view of the present invention.

[0029] Figure 4 Cross-sectional view of the present invention Figure 1 .

[0030] Figure 5 For the present invention Figure 4 An enlarged schematic diagram of the structure at point A in the middle.

[0031] Figure 6 Cross-sectional view of the present invention Figure 2 .

[0032] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure at point B.

[0033] Figure 8 For the present invention Figure 6 Enlarged schematic diagram of the structure at point C.

[0034] In the diagram: 1. Spiral heat exchanger tube; 2. Inlet pipe; 3. Outlet pipe; 4. First heat exchange assembly; 5. Second heat exchange assembly; 6. Heat conduction assembly; 7. Stirring assembly; 8. Drive assembly; 9. Base; 10. Support seat; 11. First heat conduction block; 12. Fixing block; 41. First heat exchange box; 42. First water inlet pipe; 43. Liquid level gauge; 44. Diverter pipe; 45. Nozzle; 46. First drain pipe; 47. Valve; 51. Second heat exchange box; 52. Second water inlet pipe; 53. Second drain pipe; 61. Piston rod; 62. Shaft seal sleeve; 63. Second heat conduction plate; 64. Heat conduction fins; 71. Rotating shaft; 72. First gear; 73. Stirring blade; 81. Motor; 82. Second gear; 83. Mounting seat; 84. Screw; 85. Slider; 86. Hinge rod; 87. Hinge seat. Detailed Implementation

[0035] The following will refer to the attached reference. Figures 1 to 8 The various embodiments of the present invention will be described in detail below. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0036] A high-efficiency and energy-saving air separation heat exchanger includes a spiral heat exchange tube 1, which is double-helical. The two ends of the spiral heat exchange tube 1 are respectively fixedly connected to an inlet pipe 2 and an outlet pipe 3. The double-helical structure of the spiral heat exchange tube 1 is a double-layer spiral tube with inner and outer layers. Liquid air will enter the outer spiral tube through the inlet pipe 2, and then enter the inner spiral tube. Finally, it will enter the outlet pipe 3 from the inner circulation pipe and then be discharged.

[0037] A support base 10 is provided below the spiral heat exchange tube 1. Two first heat exchange components 4 and two second heat exchange components 5 are provided above the support base 10, which exchange heat from top to bottom. The two first heat exchange components 4 are spliced ​​together to form a ring structure, and the spiral heat exchange tube 1 is located inside the ring structure.

[0038] The liquid air flowing inside the spiral heat exchange tube 1 undergoes multiple heat exchanges through two first heat exchange components 4 and two second heat exchange components 5. Moreover, the heat exchange effect and efficiency of the spiral heat exchange tube 1 can be guaranteed through bottom-up and top-down heat exchange.

[0039] In this embodiment, the first heat exchange component 4 includes a first heat exchange box 41. A first water inlet pipe 42 is installed on the upper surface of the first heat exchange box 41. A valve 47 is fixedly connected to the bottom surface of the first heat exchange box 41. One end of the first water inlet pipe 42 passes through the upper surface of the first heat exchange box 41 and is installed with a diversion pipe 44. A nozzle 45 is installed on the diversion pipe 44.

[0040] Cold water in the first inlet pipe 42 will be sprayed into the interior of the first heat exchange box 41 through the diversion pipe 44 and the nozzle 45, and the spiral heat exchange tube 1 in the first heat exchange box 41 will be heat exchanged by spraying.

[0041] The first heat exchange box 41 is equipped with a level gauge 43, and the detection end of the level gauge 43 is located inside the first heat exchange box 41. The first drain pipe 46 is equipped with a valve 47.

[0042] The level gauge 43 can measure the liquid in the first heat exchange box 41, so that the liquid in the first heat exchange box 41 will be above the uppermost spiral heat exchange tube 1, and the valve 47 can adjust and control the drainage volume of the first drain pipe 46.

[0043] In this embodiment, the second heat exchange assembly 5 includes a second heat exchange box 51. The upper surface of the second heat exchange box 51 is fixedly connected to a second drain pipe 53, the bottom surface of the second water inlet pipe 52 is fixedly connected to a second water inlet pipe 52, and a support base 10 is fixedly connected to the base 9. The top end of the support base 10 is fixedly connected to the first heat exchange box 41 and the second heat exchange box 51 respectively.

[0044] The base 9 supports the first heat exchange box 41 and the second heat exchange box 51 with the support seat 10, so that there is a certain distance between the first heat exchange box 41, the second heat exchange box 51 and the base 9.

[0045] The second water inlet pipe 52 and the first water inlet pipe 42 are both connected to the cold water discharge pipe, and the first drain pipe 46 and the second drain pipe 53 are respectively connected to the warm water return pipe.

[0046] The cold water in the cold water discharge pipe will enter the first heat exchange box 41 and the second heat exchange box 51 through the first water inlet pipe 42 and the second water inlet pipe 52 respectively, and the cold water after heat exchange will be discharged from the first heat exchange box 41 and the second heat exchange box 51 through the first drain pipe 46 and the second drain pipe 53.

[0047] Both the first heat exchange component 4 and the second heat exchange component 5 are equipped with a heat-conducting component 6 and a stirring component 7 for auxiliary heat exchange, and the base 9 is equipped with a drive component 8 for synchronous adjustment of the heat-conducting component 6 and the stirring component 7.

[0048] In this embodiment, the heat-conducting component 6 includes a shaft seal sleeve 62 embedded in the first heat exchange box 41 and the second heat exchange box 51. A piston rod 61 is slidably connected in each shaft seal sleeve 62. One end of the piston rod 61 is fixedly connected to a second heat-conducting plate 63. Heat-conducting fins 64 are installed on the second heat-conducting plate 63. Both the second heat-conducting plate 63 and the heat-conducting fins 64 are made of heat-conducting metal material. The spiral heat exchange tube 1 is also made of heat-conducting metal material.

[0049] The second heat-conducting plate 63 is provided with a groove that matches the spiral heat exchange tube 1, which can increase the contact area between the second heat-conducting plate 63 and the spiral heat exchange tube 1, thereby enabling the second heat-conducting plate 63 to transfer heat to the spiral heat exchange tube 1, and to exchange heat with the cold water in the second heat exchange box 51 and the first heat exchange box 41 through the second heat-conducting plate 63 and the heat-conducting fins 64, thus accelerating the heat exchange efficiency.

[0050] In this embodiment, the drive assembly 8 includes a motor 81 mounted on the support base 10. The output shaft of the motor 81 is equipped with a screw 84. A slider 85 is threaded onto the screw 84. A hinge rod 86 is hinged onto the slider 85. A hinge seat 87 is hinged onto the hinge rod 86, and the hinge seat 87 is fixedly connected to the other end of the piston rod 61.

[0051] The output shaft of motor 81 drives screw 84 to rotate, and slider 85 moves on screw 84. Under the action of hinge rod 86 and hinge seat 87, piston rod 61 is pushed, thereby adjusting the distance between second heat-conducting plate 63 and spiral heat exchange tube 1. The movement of second heat-conducting plate 63 can also accelerate the flow of liquid in first heat exchange box 41 and second heat exchange box 51.

[0052] In this embodiment, the stirring assembly 7 includes a rotating shaft 71 rotatably connected to the first heat exchange box 41 and the second heat exchange box 51. A first gear 72 and a stirring blade 73 are mounted on the rotating shaft 71. A second gear 82 is fixedly connected to the screw 84 and meshes with the first gear 72. A mounting base 83 is rotatably connected to the top end of the screw 84 and is fixedly connected to the first heat exchange box 41 and the second heat exchange box 51.

[0053] When the output shaft of the motor 81 drives the screw 84 to rotate, the rotating shaft 71 is driven to rotate by the meshing of the second gear 82 and the first gear 72, and the rotating shaft 71 in the rotating state drives the stirring blade 73 to stir the liquid in the first heat exchange box 41 and the second heat exchange box 51.

[0054] First heat-conducting blocks 11 are provided in both the first heat exchange box 41 and the second heat exchange box 51. Each first heat-conducting block 11 is fixedly connected with a fixed block 12 arranged at equal intervals, and the end of the fixed block 12 away from the first heat-conducting block 11 is installed on the first heat exchange box 41 and the second heat exchange box 51.

[0055] The first heat-conducting block 11 and the fixing block 12 also use heat-conducting metal materials. With the help of the first heat-conducting block 11 and the fixing block 12, the heat transfer of liquid and air in the spiral heat exchange tube 1 is completed, thereby accelerating the heat exchange efficiency.

[0056] A method of using a high-efficiency energy-saving air separation heat exchanger includes the following steps:

[0057] S1. Cold water is transported to the first inlet pipe 42 and the second inlet pipe 52 through the cold water discharge pipe. The cold water in the first heat exchange box 41 is sprayed from top to bottom into the first heat exchange box 41 by the diversion pipe 44 and the nozzle 45. The cold water in the second heat exchange box 51 gradually spreads upward from the bottom of the second heat exchange box 51 until it is full.

[0058] S2. The heated liquid air is transported to the spiral heat exchange tube 1 through the liquid inlet pipe 2, and the liquid air exchanges heat in the annular structure formed by the spiral heat exchange tube 1 and the second heat exchange box 51 and the first heat exchange box 41.

[0059] S3. The output shaft of the motor 81 drives the screw 84 to rotate, and the slider 85 moves on the screw 84. Then, the piston rod 61 moves laterally and reciprocally with the help of the hinge rod 86 and the hinge seat 87. When the second heat-conducting plate 63 is attached to the spiral heat exchange tube 1, the heat exchange between the liquid and air in the spiral heat exchange tube 1 is accelerated. The screw 84 drives the rotating shaft 71 to rotate through the second gear 82 and the first gear 72, so that the rotating shaft 71 stirs the liquid in the first heat exchange box 41 and the second heat exchange box 51 with the help of the stirring blade 73.

[0060] S4. The heat-exchanged liquid air is discharged into the subsequent air switch through the liquid outlet pipe 3, while the heat-exchanged liquid in the first heat exchange box 41 and the second heat exchange box 51 will be transported to the warm water return pipe through the second drain pipe 53 and the first drain pipe 46.

[0061] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0062] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0063] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A high-efficiency and energy-saving air separation heat exchanger, characterized in that, The system includes a spiral heat exchange tube (1), which is double-spiral in shape. The two ends of the spiral heat exchange tube (1) are respectively fixedly connected to an inlet pipe (2) and an outlet pipe (3). A support base (10) is provided below the spiral heat exchange tube (1). Two first heat exchange components (4) and two second heat exchange components (5) are provided above the support base (10). The two first heat exchange components (4) and the two first heat exchange components (4) are spliced ​​into a ring structure. The spiral heat exchange tube (1) is located inside the ring structure. A heat-conducting component (6) and a stirring component (7) for auxiliary heat exchange are provided on the first heat exchange component (4) and the second heat exchange component (5). A driving component (8) for synchronously adjusting the heat-conducting component (6) and the stirring component (7) is provided on the base (9).

2. The high-efficiency energy-saving air separation heat exchanger according to claim 1, characterized in that, The first heat exchange assembly (4) includes a first heat exchange box (41), a first water inlet pipe (42) is installed on the upper surface of the first heat exchange box (41), a valve (47) is fixedly connected to the bottom surface of the first heat exchange box (41), one end of the first water inlet pipe (42) passes through the upper surface of the first heat exchange box (41) and is installed with a diversion pipe (44), and a nozzle (45) is installed on the diversion pipe (44).

3. The high-efficiency energy-saving air separation heat exchanger according to claim 2, characterized in that, A level gauge (43) is installed on the first heat exchange box (41), and the detection end of the level gauge (43) is located inside the first heat exchange box (41). A valve (47) is installed on the first drain pipe (46).

4. The high-efficiency energy-saving air separation heat exchanger according to claim 3, characterized in that, The second heat exchange assembly (5) includes a second heat exchange box (51), the upper surface of the second heat exchange box (51) is fixedly connected to a second drain pipe (53), the bottom surface of the second water inlet pipe (52) is fixedly connected to a second water inlet pipe (52), a support seat (10) is fixedly connected to the base (9), and the top of the support seat (10) is fixedly connected to the first heat exchange box (41) and the second heat exchange box (51) respectively.

5. A high-efficiency energy-saving air separation heat exchanger according to claim 4, characterized in that, The second water inlet pipe (52) and the first water inlet pipe (42) are both connected to the cold water outlet pipe, and the first drain pipe (46) and the second drain pipe (53) are respectively connected to the warm water return pipe.

6. The high-efficiency energy-saving air separation heat exchanger according to claim 4, characterized in that, The heat-conducting component (6) includes a shaft seal sleeve (62) embedded in the first heat exchange box (41) and the second heat exchange box (51). A piston rod (61) is slidably connected in each shaft seal sleeve (62). A second heat-conducting plate (63) is fixedly connected to one end of the piston rod (61). Heat-conducting fins (64) are installed on the second heat-conducting plate (63). Both the second heat-conducting plate (63) and the heat-conducting fins (64) are made of heat-conducting metal material.

7. A high-efficiency energy-saving air separation heat exchanger according to claim 6, characterized in that, The drive assembly (8) includes a motor (81) mounted on a support base (10). The output shaft of the motor (81) is fitted with a screw (84). A slider (85) is threaded onto the screw (84). A hinge rod (86) is hinged onto the slider (85). A hinge seat (87) is hinged onto the hinge rod (86), and the hinge seat (87) is fixedly connected to the other end of the piston rod (61).

8. A high-efficiency energy-saving air separation heat exchanger according to claim 7, characterized in that, The stirring assembly (7) includes a rotating shaft (71) rotatably connected to the first heat exchange box (41) and the second heat exchange box (51). A first gear (72) and a stirring blade (73) are mounted on the rotating shaft (71). A second gear (82) is fixedly connected to the screw (84), and the second gear (82) meshes with the first gear (72). A mounting base (83) is rotatably connected to the top end of the screw (84), and the mounting base (83) is fixedly connected to the first heat exchange box (41) and the second heat exchange box (51).

9. A high-efficiency energy-saving air separation heat exchanger according to claim 4, characterized in that, A first heat-conducting block (11) is provided in both the first heat exchange box (41) and the second heat exchange box (51). Each first heat-conducting block (11) is fixedly connected with a fixed block (12) arranged at equal intervals. The end of the fixed block (12) away from the first heat-conducting block (11) is installed on the first heat exchange box (41) and the second heat exchange box (51).

10. A method of using a high-efficiency energy-saving air separation heat exchanger according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Cold water is transported to the first inlet pipe (42) and the second inlet pipe (52) by means of the cold water discharge pipe. The cold water in the first heat exchange box (41) is sprayed from top to bottom into the first heat exchange box (41) by the diversion pipe (44) and the nozzle (45). The cold water in the second heat exchange box (51) gradually spreads upward from the bottom of the second heat exchange box (51) until it is full. S2. The heated liquid air is transported to the spiral heat exchange tube (1) through the liquid inlet pipe (2), and the liquid air is heat exchanged in the annular structure formed by the second heat exchange box (51) and the first heat exchange box (41) through the spiral heat exchange tube (1). S3. The output shaft of the motor (81) drives the screw (84) to rotate, and the slider (85) moves on the screw (84). Then, the piston rod (61) moves laterally and reciprocally through the hinge rod (86) and hinge seat (87). When the second heat-conducting plate (63) is attached to the spiral heat exchange tube (1), the heat exchange of liquid and air in the spiral heat exchange tube (1) is accelerated. The screw (84) drives the rotating shaft (71) to rotate through the second gear (82) and the first gear (72), so that the rotating shaft (71) stirs the liquid in the first heat exchange box (41) and the second heat exchange box (51) with the help of the stirring blade (73). S4. The heat-exchanged liquid air is discharged into the subsequent air-cooled equipment through the liquid outlet pipe (3), while the heat-exchanged liquid in the first heat exchange box (41) and the second heat exchange box (51) will be transported to the warm water return pipe through the second drain pipe (53) and the first drain pipe (46).

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