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

Abstract

The 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.The energy-saving heat exchange device comprises a shell, a cold fluid inlet and a hot fluid inlet are fixedly formed in the top end of the shell, and a hot fluid outlet and a cold fluid outlet are fixedly formed in the bottom end of the shell; a partition plate, a tube bundle and a tube plate are installed in the shell, the partition plate is arranged below the cold fluid inlet, the tube bundle is arranged on one side of the partition plate, the tube plate is installed at the end of the tube bundle, baffle plates are evenly installed on the outer wall of the tube bundle, each baffle plate is installed in the shell, and a scraping assembly is arranged in the shell. Cold fluid enters the shell from the cold fluid inlet to drive the baffling fan blades to rotate, so that the scraper moves between every two baffling plates in a reciprocating manner to scrape the inner wall of the shell and the outer wall of the tube bundle, the influence of impurity deposition on the heat exchange efficiency during working is reduced, the heat exchange efficiency is ensured, the maintenance workload is reduced, and the downtime is shortened.

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 exchanger is a kind of efficient energy equipment, which can efficiently transfer energy between different media and realize the recovery and reuse of heat energy. This equipment is designed with cutting-edge technology to ensure high efficiency and low loss in the energy conversion process, thereby significantly improving the efficiency of energy use.

[0003] Energy-saving heat exchangers are widely used in many fields, including industry, commerce and residence. Especially when used in refrigeration stations, they can improve heat exchange efficiency and reduce energy consumption, thus bringing significant energy-saving effects to the refrigeration system.

[0004] When hot fluid and cold fluid circulate inside the container, impurities will 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. At present, the usual practice to address this problem is to disassemble 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 for a refrigeration station, so as to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned object, 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 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, baffles are evenly installed on the outer wall of the tube bundle, each of the baffles is installed inside the shell, and a scraping assembly is arranged inside the shell; The scraping assembly includes a scraper arranged inside the shell, the scrapers are evenly arranged, and 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 a first rotating shaft, and the first rotating shaft is rotatably installed inside the partition, and the end of the first rotating shaft away from the reciprocating screw is fixedly connected to a first bevel gear, the top end of the first bevel gear is meshed and connected to a second bevel gear, the top end of the second bevel gear is fixedly installed with a second rotating shaft, and the top end of the second rotating shaft is fixedly connected to a deflector blade, and the deflector blade is arranged below the inlet of the cold fluid.

[0007] 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 rotationally connected to the scraper through a rotating component.

[0008] 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.

[0009] 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 meshingly 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.

[0010] 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.

[0011] 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.

[0012] As a further technical solution of the present invention, a filter screen is installed at the top of the hot fluid outlet, and a cleaning component is arranged at the top of the filter screen.

[0013] As a further technical solution of the present invention, the cleaning assembly includes a second brush plate arranged at the top of the filter, the top of the second brush plate is fixedly connected with a fifth rotating shaft, the top of the fifth rotating shaft is fixedly connected with a sixth bevel gear, the top of the sixth bevel gear is meshedly connected with the fifth bevel gear, a fourth rotating shaft is fixedly installed on one side of the fifth bevel gear, an end of the fourth rotating shaft away from the fifth bevel gear is meshedly connected with the third bevel gear, one side of the third bevel gear is meshedly connected with the fourth bevel gear, a winding roller is fixedly installed on the inner wall of the fourth bevel gear, a connecting rope is installed on the outer wall of the winding roller, and an 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.

[0014] 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.

[0015] A heat exchange method for an energy-saving heat exchange device for a refrigeration station comprises the following steps: S1: During operation, the cold fluid enters the shell from the cold fluid inlet, enters the tube bundle from above the partition, and finally is discharged from the tube bundle below the partition; S2: When the cold fluid enters the shell, the baffle blades are driven to rotate, and the rotation of the baffle blades drives the rotation of the second rotating shaft, and the rotation of the second rotating shaft drives the rotation of the second bevel gear, and the rotation of the second bevel gear drives the rotation of the first bevel gear, and the rotation of the first bevel gear drives the rotation of the first rotating shaft, and the rotation of the first rotating shaft drives the rotation of the reciprocating screw, and the rotation of the reciprocating screw drives the scraper to reciprocate between every two baffles to scrape the inner wall of the shell and the outer wall of the tube bundle; 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 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 bristles rotate when cleaning the outer wall of the tube bundle. S4: When the scraper moves, the rotation of one of the first ring gears drives the rotation of the third ring gear. When the tooth block on the outer wall 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 tooth block on the outer wall of the third ring gear disengages from the transmission gear, the transmission gear reverses, so that the first brush plate slides back and forth inside the scraper to brush and clean the inner wall of the shell. S5: The hot fluid enters the shell from the hot fluid inlet, is guided by several baffles, filtered by the filter screen, and then discharged from the hot fluid outlet; 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 to prevent the filter from being blocked and allow the hot fluid to be discharged normally.

[0016] The beneficial effects of the present invention are as follows: The present invention arranges a scraping assembly. When working, cold fluid enters the shell from the cold fluid inlet to drive 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 reciprocate between every two deflectors to scrape the inner wall of the shell and the outer wall of the tube bundle, thereby reducing the influence of impurity deposition on the heat exchange efficiency during operation, which not only ensures the heat exchange efficiency but also reduces the maintenance workload and downtime.

[0017] The present invention arranges 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 brush. When the outer wall of a certain tube bundle is cleaned, the brush can penetrate into the tiny gaps and hard-to-reach areas of 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.

[0018] The present invention arranges a cleaning component, and 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, and the rotation of the winding roller drives the rotation of the fourth bevel gear, and the rotation of the fourth bevel gear drives the rotation of the third bevel gear, and the rotation of the third bevel gear drives the rotation of the fourth rotating shaft, and the rotation of the fourth rotating shaft drives the rotation of the fifth bevel gear, and the rotation of the fifth bevel gear drives the rotation of the sixth bevel gear, and 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 causing 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 thermal fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle; Figure 4 For the present invention Figure 2 A magnified schematic diagram of the structure at B in the middle; Figure 5 It is a schematic diagram of the structure of the baffle and scraper of the present invention; Figure 6 It is a front view of the overall structure section of the present invention; Figure 7 It is a schematic cross-sectional view of the structure of the scraper of the present invention; Figure 8 It is a schematic cross-sectional view of the structure of the first ring gear of the present invention; Fig. 9 For the present invention Figure 8 A magnified schematic diagram of the structure at C in the middle; Fig.10 It is a schematic cross-sectional view of the structure of the second ring gear of the present invention; Fig.11 It is a structural schematic diagram of the second brush plate of the present invention.

[0020] 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, bristles; 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

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0022] 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 of the shell 1, a hot fluid outlet 8 and a cold fluid outlet 9 are fixedly installed at the bottom 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, the outer wall of the tube bundle 4 is evenly installed with baffles 6, each baffle 6 is installed inside the shell 1, and a scraping component is arranged 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 is threadedly connected to the reciprocating screw 11, and the scraper 10 is slidingly connected to the guide rod 12. One end of the reciprocating screw 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 11 is fixedly connected to a first bevel gear 14, and 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 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.

[0023] The baffle plate 6 is rotatably connected to the reciprocating screw rod 11; The outer wall of the reciprocating screw rod 11 is provided with several sections of reciprocating threads, so that the scraper 10 between every two baffles 6 can reciprocate; During operation, the cold fluid enters the shell 1 from the cold fluid inlet 2 to drive the deflector blades 17 to rotate, and the rotation of the deflector blades 17 drives the rotation of the second rotating shaft 16, and the rotation of the second rotating shaft 16 drives the rotation of the second bevel gear 15, and the rotation of the second bevel gear 15 drives the rotation of the first bevel gear 14, and the rotation of the first bevel gear 14 drives the rotation of the first rotating shaft 13, and the rotation of the first rotating shaft 13 drives the rotation of the reciprocating screw 11, and the rotation of the reciprocating screw 11 drives the scraper 10 to reciprocate between every two deflector plates 6 to scrape the inner wall of the shell 1 and the outer wall of the tube bundle 4, thereby reducing the influence of impurity deposition on the heat exchange efficiency during operation, which not only ensures the heat exchange efficiency but also reduces the maintenance workload and downtime.

[0024] 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.

[0025] The outer wall of each tube bundle 4 is provided with a first ring gear 19; 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. The reciprocating scraping of the scraper 10 can improve the cleaning efficiency.

[0026] 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.

[0027] 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 .

[0028] 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 meshingly 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.

[0029] Several first ring gears 19 are meshed with each other, and the bottom end of one of the first ring gears 19 is meshedly connected with a second ring gear 23; 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 through 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 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 closely to the outer wall of the tube bundle 4 to ensure thorough cleaning, thereby ensuring the heat exchange efficiency of the device.

[0030] like Figures 1 to 10As 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, the bottom end of the transmission gear 25 is meshed and connected with a third ring gear 24, and the third ring gear 24 is fixedly installed on one side of one of the first ring gears 19.

[0031] The third ring gear 24 is not meshed with the adjacent first ring gears 19; The inner wall of the first brush plate 18 is provided with a plurality of tooth blocks; 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 component to ensure the comprehensive cleaning of the heat exchange device, thereby improving the heat exchange efficiency of the device and reducing the maintenance frequency.

[0032] like Figure 8 and Fig. 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 .

[0033] The tooth blocks on the outer wall of the third ring gear 24 are arranged in a sector shape; When the outer wall tooth block of the third ring gear 24 meshes 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 reverses, thereby causing the first brush plate 18 to slide back and forth inside the scraper 10, ensuring stability and reliability during cleaning.

[0034] 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.

[0035] 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.

[0036] like Figure 2 , Figure 4 and Fig.11As 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, a fourth rotating shaft 36 is fixedly installed on one side of the fifth bevel gear 37, the end of the fourth rotating shaft 36 away from the fifth bevel gear 37 is meshedly connected to the third bevel gear 33, one side of the third bevel gear 33 is meshedly connected to the fourth bevel gear 34, the inner wall of the fourth bevel gear 34 is fixedly installed with a winding roller 32, 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.

[0037] 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. 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, resulting in a 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 thermal fluid.

[0038] like Figure 2 , Figure 4 and Fig.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 .

[0039] A heat exchange method for an energy-saving heat exchange device for a refrigeration station comprises the following steps: 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 baffle blades 17 are driven to rotate, and the rotation of the baffle blades 17 drives the rotation of the second rotating shaft 16, and the rotation of the second rotating shaft 16 drives the rotation of the second bevel gear 15, and the rotation of the second bevel gear 15 drives the rotation of the first bevel gear 14, and the rotation of the first bevel gear 14 drives the rotation of the first rotating shaft 13, and the rotation of the first rotating shaft 13 drives the rotation of the reciprocating screw 11, and the rotation of the reciprocating screw 11 drives the scraper 10 to reciprocate between every two baffles 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 rotates through 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 when 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 meshes 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 is disengaged 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 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 a plurality of baffles 6, is filtered by the filter screen 28, and is 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.

[0040] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present 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: A cold fluid inlet (2) and a hot fluid inlet (7) are fixedly mounted on the top end of the shell (1), and a hot fluid outlet (8) and a cold fluid outlet (9) are fixedly mounted on the bottom end of the shell (1). A partition (3), a tube bundle (4) and a tube sheet (5) are mounted inside the shell (1), wherein 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 mounted at the end of the tube bundle (4), and baffles (6) are evenly mounted on the outer wall of the tube bundle (4), and each baffle (6) is mounted inside the shell (1). A scraping assembly is arranged inside the shell (1); The scraping assembly comprises a scraper (10) arranged inside the housing (1), the scraper (10) being evenly arranged, a reciprocating screw (11) and a guide rod (12) being embedded inside the scraper (10), the scraper (10) being threadedly connected to the reciprocating screw (11), the scraper (10) being slidably connected to the guide rod (12), one end of the reciprocating screw (11) being fixedly connected to a first rotating shaft (13), the first rotating shaft (13) being rotatably mounted inside the partition (3), one end of the first rotating shaft (13) away from the reciprocating screw (11) being fixedly connected to a first bevel gear (14), the top end of the first bevel gear (14) being meshingly connected to a second bevel gear (15), the top end of the second bevel gear (15) being fixedly mounted with a second rotating shaft (16), the top end of the second rotating shaft (16) being fixedly connected to a deflector blade (17), the deflector blade (17) being arranged below the cold fluid inlet (2).

2. The energy-saving heat exchange device for a refrigeration station according to claim 1, characterized in that: First ring gears (19) are evenly arranged inside the scraper (10), bristles (20) are fixedly mounted on the inner wall of the first ring gear (19), and the first ring gear (19) is rotatably connected to the scraper (10) via a rotating assembly.

3. The energy-saving heat exchange device for a refrigeration station according to claim 1, characterized in that: A first brush plate (18) is mounted on the outer wall of the scraper (10), and the first brush plate (18) is slidably connected to the scraper (10) via a moving assembly.

4. The energy-saving heat exchange device for a refrigeration station according to claim 2, characterized in that: The rotating assembly comprises 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).

5. The energy-saving heat exchange device for a refrigeration station according to claim 3, 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), the third ring gear (24) being fixedly mounted on one side of one of the first ring gears (19).

6. The energy-saving heat exchange device for a refrigeration station according to claim 5, 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).

7. The energy-saving heat exchange device for a refrigeration station according to claim 1, 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).

8. The energy-saving heat exchange device for a refrigeration station according to claim 7, characterized in that: The cleaning assembly comprises 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 meshingly connected to a fifth bevel gear (37); a fourth rotating shaft (36) is fixedly mounted 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 meshingly connected to a third bevel gear (33); one side of the third bevel gear (33) is meshingly connected to a fourth bevel gear (34); a winding roller (32) is fixedly mounted on the inner wall of the fourth bevel gear (34); a connecting rope (30) is mounted on the outer wall of the winding roller (32); 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).

9. The energy-saving heat exchange device for a refrigeration station according to claim 8, 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).

10. 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 as claimed in claims 1 to 9, 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 baffle blades (17) are driven to rotate. The rotation of the baffle blades (17) drives the second rotating shaft (16). The rotation of the second rotating shaft (16) drives the second bevel gear (15). The rotation of the second bevel gear (15) drives the first bevel gear (14). The rotation of the first bevel gear (14) drives the first rotating shaft (13). The rotation of the first rotating shaft (13) drives the reciprocating screw (11). The rotation of the reciprocating screw (11) drives the scraper (10) to reciprocate between every two baffle 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). 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 the bristles (20) rotate when 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) meshes 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) is disengaged 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 a plurality of baffles (6), filtered by the filter screen (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 fourth bevel gear (34) to rotate. The rotation of the fourth bevel gear (34) drives the third bevel gear (33) to rotate. The rotation of the third bevel gear (33) drives the fourth rotating shaft (36). The rotation of the fourth rotating shaft (36) drives the fifth bevel gear (37). The rotation of the fifth bevel gear (37) drives the sixth bevel gear (38). The rotation of the sixth bevel gear (38) drives 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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