Energy-saving heat exchange device and heat exchange method for refrigeration station

Abstract

The present invention belongs to the technical field of heat exchange devices, and discloses an energy-saving heat exchange device for a refrigeration station and a heat exchange method thereof, comprising a shell, a cold fluid inlet and a hot fluid inlet are fixedly installed at the top end of the shell, a hot fluid outlet and a cold fluid outlet are fixedly installed at the bottom end of the shell, a partition, a tube bundle and a tube sheet are installed inside the shell, the partition is arranged below the cold fluid inlet, the tube bundle is arranged on one side of the partition, the tube sheet is installed at the end of the tube bundle, the outer wall of the tube bundle is evenly installed with baffles, each baffle is installed inside the shell, and a scraper assembly is arranged inside the shell. During operation, the cold fluid enters the shell from the cold fluid inlet and drives the baffle blades to rotate, so that the scraper moves back and forth between every two baffles, scraping the inner wall of the shell and the outer wall of the tube bundle, reducing the influence of impurity deposition on the heat exchange efficiency during operation, not only ensuring the heat exchange efficiency but also reducing the maintenance workload and downtime.

Description

Technical Field

[0001] The present invention belongs to the technical field of heat exchange devices, and in particular relates to an energy-saving heat exchange device for a refrigeration station and a heat exchange method thereof. Background Art

[0002] Energy-saving heat exchangers are highly efficient energy devices that can efficiently transfer energy between different media and achieve heat recovery and reuse. This equipment is designed with cutting-edge technology to ensure high efficiency and low loss in the energy conversion process, thereby significantly improving energy utilization efficiency.

[0003] Energy-saving heat exchangers are widely used in many fields, including industrial, commercial and residential areas. Especially when used in refrigeration stations, they can bring significant energy-saving effects to the refrigeration system by improving heat exchange efficiency and reducing energy consumption.

[0004] When hot and cold fluids circulate inside a container, impurity deposits inevitably form on the inner wall of the container and the outer wall of the tube bundle. This deposition phenomenon significantly affects the effective transfer of heat, thereby reducing the heat exchange efficiency. Currently, the common practice to address this problem is to dismantle the heat exchanger for cleaning. However, frequent disassembly not only increases maintenance costs but also affects the normal operation time of the equipment. Summary of the Invention

[0005] The object of the present invention is to provide an energy-saving heat exchange device and a heat exchange method thereof for a refrigeration station, so as to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: an energy-saving heat exchange device for a refrigeration station, comprising a shell, a cold fluid inlet and a hot fluid inlet fixedly mounted on the top end of the shell, a hot fluid outlet and a cold fluid outlet fixedly mounted on the bottom end of the shell, a baffle, a tube bundle and a tube sheet mounted inside the shell, the baffle being arranged below the cold fluid inlet, the tube bundle being arranged on one side of the baffle, the tube sheet being mounted at the end of the tube bundle, baffles being evenly mounted on the outer wall of the tube bundle, each baffle being mounted inside the shell, and a scraping assembly being mounted inside the shell;

[0007] The scraping assembly includes a scraper arranged inside the shell, the scraper is evenly arranged, a reciprocating screw and a guide rod are embedded in the scraper, the scraper is threadedly connected to the reciprocating screw, and the scraper is slidingly connected to the guide rod. One end of the reciprocating screw is fixedly connected to the first rotating shaft, the first rotating shaft is rotatably installed inside the partition, the end of the first rotating shaft away from the reciprocating screw is fixedly connected to the first bevel gear, the top end of the first bevel gear is meshed with the second bevel gear, the top end of the second bevel gear is fixedly installed with the second rotating shaft, the top end of the second rotating shaft is fixedly connected to the deflector blade, and the deflector blade is arranged below the cold fluid inlet.

[0008] As a further technical solution of the present invention, first ring gears are evenly arranged inside the scraper, bristles are fixedly installed on the inner wall of the first ring gear, and the first ring gear is rotatably connected to the scraper through a rotating assembly.

[0009] As a further technical solution of the present invention, a first brush plate is installed on the outer wall of the scraper, and the first brush plate is slidably connected to the scraper through a moving component.

[0010] As a further technical solution of the present invention, the rotating assembly includes a second ring gear rotatably installed inside the scraper, the second ring gear is meshedly installed at the bottom end of the first ring gear, a slider is fixedly installed on the inner wall of the second ring gear, the slider is slidably installed inside the slide groove, and the slide groove is opened on the outer wall of the guide rod.

[0011] As a further technical solution of the present invention, the moving component includes a transmission gear arranged inside the scraper, the transmission gear is meshed and installed at the bottom end of the first brush plate, the bottom end of the transmission gear is meshed and connected with a third ring gear, and the third ring gear is fixedly installed on one side of one of the first ring gears.

[0012] As a further technical solution of the present invention, a third rotating shaft is fixedly mounted on the inner wall of the transmission gear, and a first coil spring is mounted on the outer wall of the third rotating shaft.

[0013] As a further technical solution of the present invention, a filter is installed at the top of the hot fluid outlet, and a cleaning component is provided at the top of the filter.

[0014] As a further technical solution of the present invention, the cleaning assembly includes a second brush plate arranged at the top of the filter screen, the top of the second brush plate is fixedly connected to the fifth rotating shaft, the top of the fifth rotating shaft is fixedly connected to the sixth bevel gear, the top of the sixth bevel gear is meshedly connected to the fifth bevel gear, one side of the fifth bevel gear is fixedly installed with a fourth rotating shaft, the end of the fourth rotating shaft away from the fifth bevel gear is meshedly connected to the third bevel gear, one side of the third bevel gear is meshedly connected to the fourth bevel gear, the inner wall of the fourth bevel gear is fixedly installed with a winding roller, the outer wall of the winding roller is installed with a connecting rope, the end of the connecting rope away from the winding roller passes through the inner wall of the deflector and is fixedly connected to the scraper.

[0015] As a further technical solution of the present invention, the winding roller is rotatably installed inside the protective shell, a second coil spring is installed between the winding roller and the protective shell, and the protective shell is fixedly installed inside the housing.

[0016] A heat exchange method for an energy-saving heat exchange device for a refrigeration station, comprising the following steps:

[0017] S1: During operation, the cold fluid enters the shell from the cold fluid inlet, enters the tube bundle from above the partition, and finally exits from the tube bundle below the partition;

[0018] S2: When the cold fluid enters the shell, the deflector blades are driven to rotate. The rotation of the deflector blades drives the rotation of the second rotating shaft. The rotation of the second rotating shaft drives the rotation of the second bevel gear. The rotation of the second bevel gear drives the rotation of the first bevel gear. The rotation of the first bevel gear drives the rotation of the first rotating shaft. The rotation of the first rotating shaft drives the rotation of the reciprocating screw. The rotation of the reciprocating screw drives the scraper to reciprocate between each two deflectors to scrape the inner wall of the shell and the outer wall of the tube bundle.

[0019] S3: When the scraper moves, it drives the second ring gear to slide on the outer wall of the guide rod. The movement of the second ring gear drives the slider to slide in the inner wall of the chute, and the second ring gear is rotated by the guidance of the chute. The rotation of the second ring gear drives the rotation of the first ring gear. The rotation of the first ring gear drives the rotation of the bristles, causing them to rotate while cleaning the outer wall of the tube bundle;

[0020] S4: When the scraper moves, the rotation of one of the first ring gears drives the rotation of the third ring gear. When the outer wall tooth block of the third ring gear meshes with the transmission gear and drives the transmission gear to rotate, the rotation of the transmission gear drives the rotation of the third rotating shaft. The rotation of the third rotating shaft causes the first coil spring to deform and store elastic potential energy. When the outer wall tooth block of the third ring gear disengages from the transmission gear, the transmission gear reverses, thereby causing the first brush plate to slide back and forth inside the scraper to brush and clean the inner wall of the shell.

[0021] S5: The hot fluid enters the shell from the hot fluid inlet, is guided by several baffles, filtered by the filter, and then discharged from the hot fluid outlet;

[0022] S6: When the scrapers move, the movement of one of the scrapers pulls the connecting rope to unwind on the outer wall of the winding roller and causes the winding roller to rotate. The rotation of the winding roller drives the rotation of the fourth bevel gear, the rotation of the fourth bevel gear drives the rotation of the third bevel gear, the rotation of the third bevel gear drives the rotation of the fourth rotating shaft, the rotation of the fourth rotating shaft drives the rotation of the fifth bevel gear, the rotation of the fifth bevel gear drives the rotation of the sixth bevel gear, the rotation of the sixth bevel gear drives the rotation of the fifth rotating shaft, and the rotation of the fifth rotating shaft drives the second brush plate to rotate at the top of the filter screen to prevent the filter screen from being blocked and allow the hot fluid to be discharged normally.

[0023] The beneficial effects of the present invention are as follows:

[0024] The present invention is provided with a scraping assembly. When working, the cold fluid enters the shell from the cold fluid inlet and drives the deflector blades to rotate. The rotation of the deflector blades drives the rotation of the second rotating shaft. The rotation of the second rotating shaft drives the rotation of the second bevel gear. The rotation of the second bevel gear drives the rotation of the first bevel gear. The rotation of the first rotating shaft drives the rotation of the reciprocating screw. The rotation of the reciprocating screw drives the scraper to move back and forth between every two deflectors to scrape the inner wall of the shell and the outer wall of the tube bundle, reducing the influence of impurity deposition on the heat exchange efficiency during operation, not only ensuring the heat exchange efficiency but also reducing maintenance workload and downtime.

[0025] The present invention is provided with a rotating component. When the scraper moves, it drives the second ring gear to slide on the outer wall of the guide rod. The movement of the second ring gear drives the slider to slide in the inner wall of the slide groove, and the second ring gear is rotated by the guidance of the slide groove. The rotation of the second ring gear drives the rotation of the first ring gear. The rotation of the first ring gear drives the rotation of the bristles, so that the brush rotates when cleaning the outer wall of a certain tube bundle. The bristles can penetrate into the tiny gaps and hard-to-reach areas on the outer wall of the tube bundle to further brush away residual sediments. The bristles are soft and elastic and can fit tightly to the outer wall of the tube bundle to ensure thorough cleaning, thereby ensuring the heat exchange efficiency of the device.

[0026] The present invention is provided with a cleaning component. When the scraper moves, the movement of one of the scrapers pulls the connecting rope to unwind on the outer wall of the winding roller and causes the winding roller to rotate. The rotation of the winding roller drives the rotation of the fourth bevel gear, the rotation of the fourth bevel gear drives the rotation of the third bevel gear, the rotation of the third bevel gear drives the rotation of the fourth rotating shaft, the rotation of the fourth rotating shaft drives the rotation of the fifth bevel gear, the rotation of the fifth bevel gear drives the rotation of the sixth bevel gear, the rotation of the sixth bevel gear drives the rotation of the fifth rotating shaft, and the rotation of the fifth rotating shaft drives the second brush plate to rotate at the top of the filter screen to prevent the filter screen from being blocked, which leads to the problem of reduced filtration efficiency. Using the second brush plate to clean the filter screen helps to restore the permeability of the filter screen and ensure the flow efficiency of the hot fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention;

[0029] Figure 3 For the present invention Figure 2 A schematic diagram of the structure at center A;

[0030] Figure 4 For the present invention Figure 2 A magnified schematic diagram of the structure at point B in the middle;

[0031] Figure 5 This is a structural diagram of the baffle and scraper of the present invention;

[0032] Figure 6 It is a front view of the overall structure of the present invention;

[0033] Figure 7 This is a schematic cross-sectional view of the scraper structure of the present invention;

[0034] Figure 8 Schematic diagram of the cross-section of the structure of the first ring gear of the present invention;

[0035] Figure 9 For the present invention Figure 8 A magnified schematic diagram of the structure at point C in the middle;

[0036] Figure 10 Schematic diagram of the cross-section of the structure of the second ring gear of the present invention;

[0037] Figure 11 This is a structural schematic diagram of the second brush plate of the present invention.

[0038] In the figure: 1, shell; 2, cold fluid inlet; 3, partition; 4, tube bundle; 5, tube sheet; 6, baffle; 7, hot fluid inlet; 8, hot fluid outlet; 9, cold fluid outlet; 10, scraper; 11, reciprocating screw; 12, guide rod; 13, first rotating shaft; 14, first bevel gear; 15, second bevel gear; 16, second rotating shaft; 17, baffle blade; 18, first brush plate; 19, first ring gear; 20, brush; 21, Slide groove; 22. Slider; 23. Second ring gear; 24. Third ring gear; 25. Transmission gear; 26. Third rotating shaft; 27. First coil spring; 28. Filter; 29. ​​Second brush plate; 30. Connecting rope; 31. Protective shell; 32. Winding roller; 33. Third bevel gear; 34. Fourth bevel gear; 35. Second coil spring; 36. Fourth rotating shaft; 37. Fifth bevel gear; 38. Sixth bevel gear; 39. Fifth rotating shaft. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] like Figures 1 to 11 As shown, in an embodiment of the present invention, an energy-saving heat exchange device for a refrigeration station includes a shell 1. A cold fluid inlet 2 and a hot fluid inlet 7 are fixedly installed at the top end of the shell 1. A hot fluid outlet 8 and a cold fluid outlet 9 are fixedly installed at the bottom end of the shell 1. A partition 3, a tube bundle 4, and a tube sheet 5 are installed inside the shell 1. The partition 3 is arranged below the cold fluid inlet 2. The tube bundle 4 is arranged on one side of the partition 3. The tube sheet 5 is installed at the end of the tube bundle 4. Baffles 6 are evenly installed on the outer wall of the tube bundle 4. Each baffle 6 is installed inside the shell 1. A scraping assembly is provided inside the shell 1.

[0041] The scraping assembly includes a scraper 10 arranged inside the shell 1. The scraper 10 is evenly arranged. A reciprocating screw rod 11 and a guide rod 12 are embedded in the scraper 10. The scraper 10 is threadedly connected to the reciprocating screw rod 11, and the scraper 10 is slidingly connected to the guide rod 12. One end of the reciprocating screw rod 11 is fixedly connected to a first rotating shaft 13, and the first rotating shaft 13 is rotatably installed inside the partition 3. The end of the first rotating shaft 13 away from the reciprocating screw rod 11 is fixedly connected to a first bevel gear 14, and the top end of the first bevel gear 14 is meshed with a second bevel gear 15. The top end of the second bevel gear 15 is fixedly installed with a second rotating shaft 16, and the top end of the second rotating shaft 16 is fixedly connected to a deflector blade 17, and the deflector blade 17 is arranged below the cold fluid inlet 2.

[0042] The baffle 6 is rotatably connected to the reciprocating screw 11;

[0043] The outer wall of the reciprocating screw rod 11 is provided with several sections of reciprocating threads, so that the scraper 10 between each two baffles 6 moves back and forth;

[0044] During operation, the cold fluid enters the shell 1 from the cold fluid inlet 2 and drives the deflector blades 17 to rotate. The rotation of the deflector blades 17 drives the rotation of the second rotating shaft 16. The rotation of the second rotating shaft 16 drives the rotation of the second bevel gear 15. The rotation of the second bevel gear 15 drives the rotation of the first bevel gear 14. The rotation of the first bevel gear 14 drives the rotation of the first rotating shaft 13. The rotation of the first rotating shaft 13 drives the rotation of the reciprocating screw 11. The rotation of the reciprocating screw 11 drives the scraper 10 to move back and forth between every two deflector plates 6 to scrape the inner wall of the shell 1 and the outer wall of the tube bundle 4, reducing the influence of impurity deposition on the heat exchange efficiency during operation, which not only ensures the heat exchange efficiency but also reduces maintenance workload and downtime.

[0045] like Figures 1 to 9 As shown, first ring gears 19 are evenly arranged inside the scraper 10, bristles 20 are fixedly installed on the inner wall of the first ring gear 19, and the first ring gear 19 is rotatably connected to the scraper 10 through a rotating assembly.

[0046] The outer wall of each tube bundle 4 is provided with a first ring gear 19;

[0047] When the scraper 10 moves, the scraper 10 drives the first ring gear 19 to slide on the outer wall of the tube bundle 4, and the bristles 20 clean the outer wall of the tube bundle 4, which helps to remove dust, dirt or other deposits accumulated on the outer wall of the tube bundle 4. Combined with the reciprocating scraping movement of the scraper 10, the cleaning efficiency can be improved.

[0048] like Figures 1 to 9 As shown, a first brush plate 18 is installed on the outer wall of the scraper 10, and the first brush plate 18 is slidably connected to the scraper 10 through a moving component.

[0049] When the scraper 10 moves, it drives the first brush plate 18 to move, so that the outer wall brush of the first brush plate 18 contacts the inner wall of the shell 1, which helps to remove tiny sediment particles or residues on the inner wall of the shell 1 and ensure the cleanliness of the inner wall of the shell 1.

[0050] like Figures 1 to 9 As shown, the rotating assembly includes a second ring gear 23 rotatably mounted inside the scraper 10, the second ring gear 23 is meshedly mounted on the bottom end of the first ring gear 19, a slider 22 is fixedly mounted on the inner wall of the second ring gear 23, the slider 22 is slidably mounted inside the slide groove 21, and the slide groove 21 is opened on the outer wall of the guide rod 12.

[0051] Several first ring gears 19 are meshed with each other, and the bottom end of one of the first ring gears 19 is meshed with the second ring gear 23;

[0052] When the scraper 10 moves, it drives the second ring gear 23 to slide on the outer wall of the guide rod 12. The movement of the second ring gear 23 drives the slider 22 to slide in the inner wall of the slide groove 21, and the second ring gear 23 is guided by the slide groove 21 to rotate. The rotation of the second ring gear 23 drives the rotation of the first ring gear 19. The rotation of the first ring gear 19 drives the rotation of the bristles 20, so that it rotates when cleaning the outer wall of a certain tube bundle 4. The bristles 20 can penetrate into the tiny gaps and hard-to-reach areas on the outer wall of the tube bundle 4 to further brush away residual sediments. The bristles 20 are soft and elastic and can fit tightly against the outer wall of the tube bundle 4 to ensure thorough cleaning, thereby ensuring the heat exchange efficiency of the device.

[0053] like Figures 1 to 10 As shown, the moving assembly includes a transmission gear 25 arranged inside the scraper 10, the transmission gear 25 is meshed and installed at the bottom end of the first brush plate 18, and the bottom end of the transmission gear 25 is meshed and connected with a third ring gear 24, which is fixedly installed on one side of one of the first ring gears 19.

[0054] The third ring gear 24 is not engaged with the adjacent first ring gears 19;

[0055] The inner wall of the first brush plate 18 is provided with a plurality of tooth blocks;

[0056] When the scraper 10 moves, the rotation of one of the first ring gears 19 drives the rotation of the third ring gear 24, the rotation of the third ring gear 24 drives the rotation of the transmission gear 25, and the rotation of the transmission gear 25 drives the rotation of the first brush plate 18, so that the first brush plate 18 rotates while brushing the inner wall of the shell 1, and cooperates with the rotating assembly to ensure the comprehensive cleaning of the heat exchange device, thereby improving the heat exchange efficiency of the device and reducing the maintenance frequency.

[0057] like Figure 8 and Figure 9 As shown, a third rotating shaft 26 is fixedly mounted on the inner wall of the transmission gear 25 , and a first coil spring 27 is mounted on the outer wall of the third rotating shaft 26 .

[0058] The tooth blocks on the outer wall of the third ring gear 24 are arranged in a sector shape;

[0059] When the outer wall tooth block of the third ring gear 24 engages with the transmission gear 25 to drive the transmission gear 25 to rotate, the rotation of the transmission gear 25 drives the rotation of the third rotating shaft 26. The rotation of the third rotating shaft 26 causes the first coil spring 27 to deform and store elastic potential energy. When the outer wall tooth block of the third ring gear 24 disengages from the transmission gear 25, the transmission gear 25 is reversed, so that the first brush plate 18 slides back and forth inside the scraper 10, ensuring stability and reliability during cleaning.

[0060] like Figure 2 、 Figure 4 and Figure 6 As shown, a filter screen 28 is installed at the top of the hot fluid outlet 8, and a cleaning component is provided at the top of the filter screen 28.

[0061] After cleaning the sediment attached to the inside of the device, this part of the impurities flows with the hot fluid to one side of the hot fluid outlet 8, and the impurities in the fluid are filtered through the filter 28 to prevent the impurities from being discharged with the hot fluid, which may cause adverse effects on downstream equipment or processes, such as clogging pipelines and affecting product quality.

[0062] like Figure 2 、 Figure 4 and Figure 11 As shown, the cleaning assembly includes a second brush plate 29 arranged at the top of the filter 28, the top of the second brush plate 29 is fixedly connected to the fifth rotating shaft 39, the top of the fifth rotating shaft 39 is fixedly connected to the sixth bevel gear 38, the top of the sixth bevel gear 38 is meshedly connected to the fifth bevel gear 37, and one side of the fifth bevel gear 37 is fixedly installed with the fourth rotating shaft 36, and the end of the fourth rotating shaft 36 away from the fifth bevel gear 37 is meshedly connected to the third bevel gear 33, and one side of the third bevel gear 33 is meshedly connected to the fourth bevel gear 34, and the inner wall of the fourth bevel gear 34 is fixedly installed with a winding roller 32, and the outer wall of the winding roller 32 is installed with a connecting rope 30, and the end of the connecting rope 30 away from the winding roller 32 passes through the inner wall of the deflector 6 and is fixedly connected to the scraper 10.

[0063] When the scraper 10 moves, the movement of one of the scrapers 10 pulls the connecting rope 30 to unwind on the outer wall of the winding roller 32 and causes the winding roller 32 to rotate. The rotation of the winding roller 32 drives the rotation of the fourth bevel gear 34, and the rotation of the fourth bevel gear 34 drives the rotation of the third bevel gear 33. The rotation of the third bevel gear 33 drives the rotation of the fourth rotating shaft 36. The rotation of the fourth rotating shaft 36 drives the rotation of the fifth bevel gear 37. The rotation of the fifth bevel gear 37 drives the rotation of the sixth bevel gear 38. The rotation of the sixth bevel gear 38 drives the rotation of the fifth rotating shaft 39. The rotation of the fifth rotating shaft 39 drives the second brush plate 29 to rotate at the top of the filter screen 28 to prevent the filter screen 28 from being blocked, which leads to the problem of reduced filtration efficiency. Using the second brush plate 29 to clean the filter screen 28 helps to restore the permeability of the filter screen 28 and ensure the flow efficiency of the hot fluid.

[0064] like Figure 2 、 Figure 4 and Figure 11 As shown, the winding roller 32 is rotatably installed inside the protective shell 31 , a second coil spring 35 is installed between the winding roller 32 and the protective shell 31 , and the protective shell 31 is fixedly installed inside the housing 1 .

[0065] A heat exchange method for an energy-saving heat exchange device for a refrigeration station, comprising the following steps:

[0066] S1: During operation, the cold fluid enters the shell 1 from the cold fluid inlet 2, enters the tube bundle 4 from above the partition 3, and finally exits from the tube bundle 4 below the partition 3;

[0067] S2: When the cold fluid enters the shell 1, the deflector blades 17 are driven to rotate. The rotation of the deflector blades 17 drives the rotation of the second rotating shaft 16. The rotation of the second rotating shaft 16 drives the rotation of the second bevel gear 15. The rotation of the second bevel gear 15 drives the rotation of the first bevel gear 14. The rotation of the first bevel gear 14 drives the rotation of the first rotating shaft 13. The rotation of the first rotating shaft 13 drives the rotation of the reciprocating screw 11. The rotation of the reciprocating screw 11 drives the scraper 10 to reciprocate between every two deflectors 6, scraping the inner wall of the shell 1 and the outer wall of the tube bundle 4.

[0068] S3: When the scraper 10 moves, it drives the second ring gear 23 to slide on the outer wall of the guide rod 12. The movement of the second ring gear 23 drives the slider 22 to slide in the inner wall of the slide groove 21. The second ring gear 23 is guided by the slide groove 21 to rotate. The rotation of the second ring gear 23 drives the rotation of the first ring gear 19. The rotation of the first ring gear 19 drives the rotation of the bristles 20, causing them to rotate while cleaning the outer wall of the tube bundle 4.

[0069] S4: When the scraper 10 moves, the rotation of one of the first ring gears 19 drives the rotation of the third ring gear 24. When the outer wall tooth block of the third ring gear 24 meshes with the transmission gear 25 and drives the transmission gear 25 to rotate, the rotation of the transmission gear 25 drives the rotation of the third rotating shaft 26. The rotation of the third rotating shaft 26 causes the first coil spring 27 to deform and store elastic potential energy. When the outer wall tooth block of the third ring gear 24 disengages from the transmission gear 25, the transmission gear 25 is reversed, thereby causing the first brush plate 18 to slide back and forth inside the scraper 10, brushing and cleaning the inner wall of the housing 1;

[0070] S5: The hot fluid enters the housing 1 from the hot fluid inlet 7, is guided by several baffles 6, filtered by the filter 28, and then discharged from the hot fluid outlet 8;

[0071] S6: When the scrapers 10 move, the movement of one of the scrapers 10 pulls the connecting rope 30 to unwind on the outer wall of the winding roller 32 and causes the winding roller 32 to rotate. The rotation of the winding roller 32 drives the rotation of the fourth bevel gear 34. The rotation of the fourth bevel gear 34 drives the rotation of the third bevel gear 33. The rotation of the third bevel gear 33 drives the rotation of the fourth rotating shaft 36. The rotation of the fourth rotating shaft 36 drives the rotation of the fifth bevel gear 37. The rotation of the fifth bevel gear 37 drives the rotation of the sixth bevel gear 38. The rotation of the sixth bevel gear 38 drives the rotation of the fifth rotating shaft 39. The rotation of the fifth rotating shaft 39 drives the second brush plate 29 to rotate at the top of the filter screen 28 to prevent the filter screen 28 from being blocked and allow the hot fluid to be discharged normally.

[0072] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving heat exchange device for a refrigeration station, comprising a housing (1), characterized in that: The top end of the shell (1) is fixedly provided with a cold fluid inlet (2) and a hot fluid inlet (7), the bottom end of the shell (1) is fixedly provided with a hot fluid outlet (8) and a cold fluid outlet (9), the interior of the shell (1) is provided with a partition (3), a tube bundle (4) and a tube sheet (5), the partition (3) is arranged below the cold fluid inlet (2), the tube bundle (4) is arranged on one side of the partition (3), the tube sheet (5) is installed at the end of the tube bundle (4), the outer wall of the tube bundle (4) is evenly provided with baffles (6), each of the baffles (6) is installed inside the shell (1), and a scraping assembly is provided inside the shell (1); The scraping assembly includes a scraper (10) arranged inside the shell (1), the scraper (10) is evenly arranged, a reciprocating screw (11) and a guide rod (12) are embedded inside the scraper (10), the scraper (10) and the reciprocating screw (11) are threadedly connected, and the scraper (10) and the guide rod (12) are slidably connected, one end of the reciprocating screw (11) is fixedly connected to a first rotating shaft (13), the first rotating shaft (13) is rotatably mounted inside the partition (3), the end of the first rotating shaft (13) away from the reciprocating screw (11) is fixedly connected to a first bevel gear (14), the top end of the first bevel gear (14) is meshedly connected to a second bevel gear (15), the top end of the second bevel gear (15) is fixedly mounted with a second rotating shaft (16), the top end of the second rotating shaft (16) is fixedly connected to a deflector blade (17), and the deflector blade (17) is arranged below the cold fluid inlet (2); A first ring gear (19) is evenly arranged inside the scraper (10), bristles (20) are fixedly installed on the inner wall of the first ring gear (19), and the first ring gear (19) is rotatably connected to the scraper (10) through a rotating component; a first brush plate (18) is installed on the outer wall of the scraper (10), and the first brush plate (18) is slidably connected to the scraper (10) through a moving component.

2. The energy-saving heat exchange device for a refrigeration station according to claim 1, characterized in that: The rotating assembly includes a second ring gear (23) rotatably mounted inside the scraper (10), the second ring gear (23) being meshedly mounted on the bottom end of the first ring gear (19), a slider (22) being fixedly mounted on the inner wall of the second ring gear (23), the slider (22) being slidably mounted inside a slide groove (21), and the slide groove (21) being opened on the outer wall of the guide rod (12).

3. The energy-saving heat exchange device for a refrigeration station according to claim 2, characterized in that: The moving assembly comprises a transmission gear (25) arranged inside the scraper (10), the transmission gear (25) being meshedly mounted on the bottom end of the first brush plate (18), the bottom end of the transmission gear (25) being meshedly connected to a third ring gear (24), and the third ring gear (24) being fixedly mounted on one side of one of the first ring gears (19).

4. The energy-saving heat exchange device for a refrigeration station according to claim 3, characterized in that: A third rotating shaft (26) is fixedly mounted on the inner wall of the transmission gear (25), and a first coil spring (27) is mounted on the outer wall of the third rotating shaft (26).

5. The energy-saving heat exchange device for a refrigeration station according to claim 4, characterized in that: A filter screen (28) is installed at the top end of the hot fluid outlet (8), and a cleaning component is provided at the top end of the filter screen (28).

6. The energy-saving heat exchange device for a refrigeration station according to claim 5, characterized in that: The cleaning assembly includes a second brush plate (29) arranged at the top of the filter screen (28), the top of the second brush plate (29) is fixedly connected to a fifth rotating shaft (39), the top of the fifth rotating shaft (39) is fixedly connected to a sixth bevel gear (38), the top of the sixth bevel gear (38) is meshedly connected to a fifth bevel gear (37), a fourth rotating shaft (36) is fixedly installed on one side of the fifth bevel gear (37), an end of the fourth rotating shaft (36) away from the fifth bevel gear (37) is meshedly connected to a third bevel gear (33), a side of the third bevel gear (33) is meshedly connected to a fourth bevel gear (34), a winding roller (32) is fixedly installed on the inner wall of the fourth bevel gear (34), a connecting rope (30) is installed on the outer wall of the winding roller (32), and an end of the connecting rope (30) away from the winding roller (32) passes through the inner wall of the deflector (6) and is fixedly connected to the scraper (10).

7. The energy-saving heat exchange device for a refrigeration station according to claim 6, characterized in that: The winding roller (32) is rotatably mounted inside the protective shell (31), a second coil spring (35) is mounted between the winding roller (32) and the protective shell (31), and the protective shell (31) is fixedly mounted inside the housing (1).

8. A heat exchange method for an energy-saving heat exchange device for a refrigeration station, the method being applicable to the energy-saving heat exchange device for a refrigeration station according to claim 7, characterized in that: The following steps are involved: S1: During operation, the cold fluid enters the shell (1) from the cold fluid inlet (2), enters the tube bundle (4) from above the partition (3), and finally is discharged from the tube bundle (4) below the partition (3); S2: When the cold fluid enters the shell (1), the deflector blades (17) are driven to rotate. The rotation of the deflector blades (17) drives the rotation of the second rotating shaft (16). The rotation of the second rotating shaft (16) drives the rotation of the second bevel gear (15). The rotation of the second bevel gear (15) drives the rotation of the first bevel gear (14). The rotation of the first bevel gear (14) drives the rotation of the first rotating shaft (13). The rotation of the first rotating shaft (13) drives the rotation of the reciprocating screw (11). The rotation of the reciprocating screw (11) drives the scraper (10) to reciprocate between each two deflector plates (6) to scrape the inner wall of the shell (1) and the outer wall of the tube bundle (4). S3: When the scraper (10) moves, it drives the second ring gear (23) to slide on the outer wall of the guide rod (12). The movement of the second ring gear (23) drives the slider (22) to slide in the inner wall of the slide groove (21), and the second ring gear (23) is rotated by the guidance of the slide groove (21). The rotation of the second ring gear (23) drives the rotation of the first ring gear (19). The rotation of the first ring gear (19) drives the rotation of the bristles (20), so that the bristles (20) rotate while cleaning the outer wall of the tube bundle (4); S4: When the scraper (10) moves, the rotation of one of the first ring gears (19) drives the rotation of the third ring gear (24). When the outer wall tooth block of the third ring gear (24) engages with the transmission gear (25) to drive the transmission gear (25) to rotate, the rotation of the transmission gear (25) drives the rotation of the third rotating shaft (26). The rotation of the third rotating shaft (26) causes the first coil spring (27) to deform and store elastic potential energy. When the outer wall tooth block of the third ring gear (24) disengages from the transmission gear (25), the transmission gear (25) is reversed, thereby causing the first brush plate (18) to slide back and forth inside the scraper (10) to brush and clean the inner wall of the housing (1); S5: The hot fluid enters the housing (1) from the hot fluid inlet (7), is guided by several baffles (6), filtered by the filter (28), and then discharged from the hot fluid outlet (8); S6: When the scrapers (10) move, the movement of one of the scrapers (10) pulls the connecting rope (30) to unwind on the outer wall of the winding roller (32) and causes the winding roller (32) to rotate. The rotation of the winding roller (32) drives the rotation of the fourth bevel gear (34). The rotation of the fourth bevel gear (34) drives the rotation of the third bevel gear (33). The rotation of the third bevel gear (33) drives the rotation of the fourth rotating shaft (36). The rotation of the fourth rotating shaft (36) drives the rotation of the fifth bevel gear (37). The rotation of the fifth bevel gear (37) drives the rotation of the sixth bevel gear (38). The rotation of the sixth bevel gear (38) drives the rotation of the fifth rotating shaft (39). The rotation of the fifth rotating shaft (39) drives the second brush plate (29) to rotate at the top of the filter screen (28) to prevent the filter screen (28) from being blocked and allow the hot fluid to be discharged normally.

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