A tube-fin type shell-and-tube heat exchanger

Abstract

The application relates to the technical field of heat exchangers, and discloses a tube-fin tube-shell type heat exchanger. The heat exchanger comprises a device shell, a fluid exchange component arranged on the device shell, two symmetrical guide rotating cylinders arranged on the inner side of the device shell, an eccentric rotating seat rotatably arranged at the eccentric position of each guide rotating cylinder, a group of regularly distributed heat exchange tubes rotatably connected between the two eccentric rotating seats, a group of regularly distributed liquid blocking rotating seats rotatably arranged on the inner wall of the device shell and corresponding to the position between the two eccentric rotating seats, an eccentric baffle rotatably arranged at the eccentric position of each liquid blocking rotating seat, a plurality of whole brush rings and half brush rings for cleaning the outer wall of the heat exchange tube fixedly arranged on the eccentric baffle, and a vibration generation module arranged on the right side of the device shell. The revolution of the guide rotating cylinder and the rotation of the eccentric rotating seat are used to realize the up-and-down and left-and-right flushing of the heat exchange tubes by the fluid in the heat exchange chamber during the heat exchange process.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and in particular to a tube-fin shell-and-tube heat exchanger. Background Art

[0002] Shell and tube heat exchangers are partition-type heat exchangers that use the wall of the tube bundle enclosed in the shell as the heat transfer surface. This type of heat exchanger has a simple structure, low cost, a wide flow cross-section, and is easy to clean scale. It is widely used and has been maturely used in many chemical fields.

[0003] In the prior art, patent document CN117029536A discloses a shell and tube heat exchanger comprising a tubular outer shell with end caps fixedly connected at both ends of the outer shell. A cluster tube is fixedly connected to the outer end face of each end cap, and a cover plate is fixedly connected to the inner end face of the end cap. A plurality of blocking assemblies are evenly arranged on the cover plate. The blocking assemblies include a base block and a sleeve. The base block is fixedly connected to the cover plate, and a socket is defined on the upper end face of the base block. The sleeve passes through the cover plate, and the inner surface of the sleeve is flush with the inner surface of the socket. The above heat exchanger can reduce the cost of cleaning and replacing medium pipes. However, the above heat exchanger has the following technical problems during use:

[0004] 1. It is not easy to realize the multi-directional flushing of the heat exchange tube by the heat exchange fluid during the heat exchange process and maintain the high heat exchange surface area of ​​the heat exchange tube;

[0005] 2. It is not convenient to achieve self-cleaning of the heat exchange tubes through periodic pressurization;

[0006] 3. It is not convenient to circulate and change the scouring intensity of the heat exchange fluid on the heat exchange tube;

[0007] Based on this, the present invention provides a tube-fin shell and tube heat exchanger to solve the technical problems raised in the above background technology. Summary of the Invention

[0008] The object of the present invention is to provide a tube-fin shell-and-tube heat exchanger that solves the problems mentioned in the background art, namely, that the existing heat exchangers are not convenient for achieving multi-directional flushing of the heat exchange tubes by the heat exchange fluid during heat exchange and maintaining a high heat exchange surface area of ​​the heat exchange tubes, are not convenient for achieving self-cleaning of the heat exchange tubes by periodic pressurization, and are not convenient for cyclically changing the flushing intensity of the heat exchange fluid on the heat exchange tubes. In order to solve the above technical problems, the present invention provides the following technical solutions:

[0009] A tube-fin shell-and-tube heat exchanger, comprising a shell, a fluid exchange component provided on the shell, two symmetrically arranged flow guide swirls provided on the inner side of the shell, an eccentric swirl seat rotatably mounted at the eccentric position of each of the two flow guide swirls, a group of regularly distributed heat exchange tubes rotatably connected between the two eccentric swirl seats, a group of regularly distributed liquid retaining swirl seats rotatably mounted on the inner wall of the shell and corresponding to the position between the two eccentric swirl seats, an eccentric baffle plate rotatably mounted at the eccentric position of each of the liquid retaining swirl seats, and a plurality of full brush rings and half brush rings fixedly mounted on the eccentric baffle plates for cleaning the outer walls of the heat exchange tubes;

[0010] The excitation generating module is installed on the right side of the device shell, and the excitation generating module is transmission-connected with an excitation seat that can be reciprocated and reset along the axis direction of the device shell and a rotatable inner shaft, the inner shaft is rotatably installed on the excitation seat, an outer shaft sleeve is rotatably sleeved on the inner shaft, the inner shaft and the outer shaft sleeve are coaxially linked in reverse, the outer shaft sleeve is fixedly connected to the guide vortex on the right side, the eccentric vortex seat on the right side is driven by the inner shaft, a rotatable large pump shaft is rotatably installed inside the eccentric vortex seat, a spiral pump blade is installed on the large pump shaft, and a plurality of high-pressure spray holes are provided on the large pump shaft;

[0011] High-pressure air intake component, used to supply air to the high-pressure spray hole;

[0012] A group of heat exchange tubes are all driven by the inner shaft.

[0013] Preferably, the fluid exchange component includes a heat exchange liquid outlet pipe and a cold medium outlet pipe installed on the top of the shell, and a heat exchange liquid inlet pipe and a hot medium inlet pipe are respectively installed on the bottom of the shell. A heat exchange liquid flow chamber is provided inside the two guide vortices, and the two ends of the heat exchange pipe are respectively connected to the two heat exchange liquid flow chambers. A group of openings distributed in a circular array and connected to the heat exchange liquid flow chambers are provided on the two guide vortices. The heat exchange liquid outlet pipe and the heat exchange liquid inlet pipe are respectively connected to the two heat exchange liquid flow chambers. An exchange chamber is provided inside the shell and at a position corresponding to the position between the two guide vortices. The cold medium outlet pipe and the hot medium inlet pipe are both connected to the exchange chamber.

[0014] Preferably, the excitation generating module includes a transmission inclined plate and a bracket installed on the device housing, a motor is installed on the bracket, a hollow shaft and a small shaft are rotatably installed on the bracket respectively, the hollow shaft and the small shaft are driven by the motor, and the inner shaft is driven by the hollow shaft, a group of elastic pressing parts are installed between the transmission inclined plate and the excitation seat, a group of elastic reset parts are installed between the excitation seat and the bracket, a reciprocating driving part driven by the small shaft is installed on the bracket, a semicircular inclined platform is transmission-mounted on the reciprocating driving part, and the semicircular inclined platform is transmission-connected to the transmission inclined plate.

[0015] Preferably, a coupling groove with openings at both ends is fixedly provided inside the hollow shaft, a linkage section is fixedly provided on the inner shaft, the linkage section is slidingly connected to the coupling groove, the cross-sections of the linkage section and the coupling groove are both regular polygons, the output shaft end of the motor is connected to the small shaft through a chain belt, a first bevel gear is installed on both the small shaft and the hollow shaft, and the two first bevel gears are meshed with each other.

[0016] Preferably, the reciprocating drive member includes a screw rod rotatably connected to the bracket, a torsion spring is provided at the rotation connection between the screw rod and the bracket, a bottom gear is installed at the bottom end of the screw rod, a half-tooth gear is installed at the bottom of the small shaft, the half-tooth gear is transmission-connected to the bottom gear, the radius of the half-tooth gear is 7-9 times the radius of the bottom gear, a reciprocating table is transmission-installed on the screw rod, the semicircular inclined table is rotatably installed on the reciprocating table, the interior of the semicircular inclined table is fixed with a through groove with openings at both ends and slidingly connected to the small shaft, and the cross-sections of the through groove and the small shaft are both regular polygons.

[0017] Preferably, a reverse shaft is rotatably mounted on the excitation seat, a reverse bevel gear is mounted on the reverse shaft, a side bevel gear is mounted on both the outer sleeve and the inner shaft, both side bevel gears are transmission-connected to the reverse bevel gear, and the two side bevel gears are respectively arranged on both sides of the reverse bevel gear.

[0018] Preferably, it also includes a right ring gear fixed on an inner shaft, a right gear is installed on the eccentric rotary seat on the right side, and the right gear is transmission connected to the right ring gear. A left ring gear is fixedly installed on the inner wall of the guide rotary cylinder on the left side, and a left gear is installed at the tail end of the large pump shaft, and the left gear is transmission connected to the left ring gear.

[0019] Preferably, the high-pressure air intake component includes a pump casing installed on the device casing, the air inlet port of the pump casing is installed with a filter, a small pump shaft is rotatably installed on the inner wall of the pump casing, the bottom end of the small pump shaft is installed with a second bevel gear, the second bevel gear is transmission-connected to the first bevel gear on the hollow shaft, a group of pump blades distributed in a circular array are installed on the small pump shaft and at a position corresponding to the inner side of the pump casing, the air outlet port of the pump casing is connected to a pump air pipe, an electromagnetic valve and a pressure gauge are respectively installed on the pump air pipe, a pump air duct is fixedly opened inside the large pump shaft, the tail end of the pump air duct is rotatably connected to a corrugated connecting pipe, and the tail end of the corrugated connecting pipe is connected to the pump air pipe.

[0020] Preferably, the heat exchange tube is a hollow tubular structure with openings at both ends, a group of heat exchange fins are installed on the heat exchange tube, and the inner walls of the full brush ring and the half brush ring are evenly covered with steel wire bristles that match the heat exchange fins.

[0021] Preferably, a fixed gear ring is fixedly mounted on one of the guide vortex drums, a passive gear is mounted on the heat exchange tube, a group of passive gears on the heat exchange tubes are meshed with each other, and the fixed gear ring is transmission-connected to the passive gears at adjacent positions.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. When the heat exchanger is in use, the motor outputs the speed at the set power. After the motor outputs the speed, the inner shaft and the outer shaft sleeve rotate in opposite directions on the same axis. When the inner shaft and the outer shaft sleeve rotate in opposite directions on the same axis, the guide rotor rotates at the set speed. After the guide rotor rotates, the right gear and the right gear ring are engaged and connected, so that the eccentric rotor can rotate at the set speed during the revolution of the guide rotor. The revolution of the guide rotor and the rotation of the eccentric rotor occur to achieve the indoor flow of the heat exchanger. The heat exchange fluid flushes the heat exchange tube up and down and left and right during the heat exchange process. The heat exchange fluid flushes the heat exchange tube up and down and left and right during the heat exchange process. On the one hand, it can effectively reduce the point contact duration of impurities in the heat exchange fluid on the outer wall of the heat exchange tube and the surface of the heat exchange fin, thereby reducing the adhesion rate of impurities on the outer wall of the heat exchange tube and the surface of the heat exchange fin. On the other hand, it enables the heat exchange tube to contact the heat exchange fluid in all directions and at multiple angles, thereby reducing the heat exchange dead angle of the heat exchange tube and improving the heat exchange efficiency of the heat exchange tube.

[0024] 2. In the present invention, the meshing connection between the left ring gear and the left gear is set, so that the large pump shaft can rotate at a set speed during the eccentric orbital rotation. The self-rotation of the large pump shaft drives the spiral pump blades to rotate. After the spiral pump blades rotate, they drive the heat exchange medium to flow from the heat medium inlet pipe to the heat medium outlet pipe, thereby realizing the heat exchange operation. Through the setting of the high-pressure air intake component, the pump casing can be continuously inflated when the heat exchange operation of the heat exchange tube is in progress. When the air pressure in the pump air pipe reaches the set value, the solenoid valve opens instantaneously for a specified time, and then the high-pressure gas in the pump air pipe is instantly pumped out. By pumping out the high-pressure gas, the scouring intensity of the fluid in the shell on the surface of the heat exchange tube is increased. When the solenoid valve is opened for a specified time, it automatically closes, thereby realizing the periodic auxiliary self-cleaning operation of impurities on the heat exchange tube.

[0025] 3. In the present invention, when the small shaft rotates at a set speed, the half-tooth gear and the bottom gear are set so that the screw can reciprocate and reverse within a set period. After the screw reciprocates and reverses within the set period, it drives the reciprocating table to move back and forth. After the reciprocating table moves back and forth, it changes the relative position of the semicircular inclined table and the transmission inclined plate and changes the single transmission stroke of the semicircular inclined table to the transmission inclined plate, thereby realizing the cyclic transformation of the vibration stroke of the vibration seat within unit time. By cyclically transforming the vibration stroke of the vibration seat within unit time, the flushing intensity of the fluid on the inner and outer walls of the heat exchange tube is cyclically changed, thereby maintaining the cleanliness of the inner and outer walls of the heat exchange tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a tube-fin shell and tube heat exchanger;

[0027] Figure 2 for Figure 1 Schematic diagram of the cross-section structure;

[0028] Figure 3 for Figure 2 Schematic diagram of the local enlarged structure at A in the middle;

[0029] Figure 4 It is a structural diagram of the heat exchange tube and pump casing;

[0030] Figure 5 for Figure 4 Schematic diagram of the local enlarged structure at B in the middle;

[0031] Figure 6 It is a structural diagram of a half brush circle and a full brush circle;

[0032] Figure 7 It is a schematic diagram of the explosion structure of the right gear ring and the eccentric rotating seat;

[0033] Figure 8 It is a structural diagram of the heat exchange tube and the passive gear;

[0034] Figure 9 It is a structural diagram of the high-pressure spray hole and the large pump shaft;

[0035] Figure 10 It is a structural diagram of the half-tooth gear and the excitation seat;

[0036] Figure 11 It is a schematic diagram of the cross-sectional structure of the transmission inclined plate and the reverse shaft.

[0037] Among them: 1. Casing; 2. Diversion swirl; 3. Eccentric swirl seat; 4. Heat exchange tube; 5. Liquid retaining swirl seat; 6. Eccentric baffle; 7. Full brush ring; 8. Half brush ring; 9. Excitation seat; 10. Inner shaft; 11. Outer shaft sleeve; 12. Left gear ring; 13. Large pump shaft; 14. Spiral pump blade; 15. High-pressure spray hole; 16. Heat exchange liquid outlet pipe; 17. Cold medium outlet pipe; 18. Heat exchange liquid inlet pipe; 19. Hot medium inlet pipe; 20. Opening; 21. Transmission inclined plate; 2 2. Motor; 23. Bracket; 24. Hollow shaft; 25. Torsion spring; 26. Small shaft; 27. Screw; 28. Elastic reset member; 29. ​​Semicircular ramp; 30. Half-tooth gear; 31. Reciprocating table; 32. Reverse shaft; 33. Right ring gear; 34. Right gear; 35. Left gear; 36. Pump housing; 37. Small pump shaft; 38. Pump air pipe; 39. Corrugated connecting pipe; 40. Elastic fastening member; 41. Fixed ring gear; 42. Driven gear; 43. Bottom gear. DETAILED DESCRIPTION

[0038] 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.

[0039] See also Figure 1-11 A tube-fin shell-and-tube heat exchanger comprises a shell 1 on which a fluid exchange component is provided;

[0040] Two symmetrically arranged flow guide swirls 2 are provided on the inner side of the shell 1. An eccentric swirl seat 3 is rotatably mounted on the eccentric position of each flow guide swirl 2. A group of regularly distributed heat exchange tubes 4 is rotatably connected between the two eccentric swirl seats 3.

[0041] The heat exchange tube 4 is a hollow tubular structure with two ends open, and a group of heat exchange fins are installed on the heat exchange tube 4;

[0042] The fluid exchange component includes a heat exchange liquid outlet pipe 16 and a cold medium outlet pipe 17 installed on the top of the shell 1, and a heat exchange liquid inlet pipe 18 and a hot medium inlet pipe 19 are installed on the bottom of the shell 1 respectively;

[0043] Both guide vortices 2 have heat exchange chambers formed therein. The ends of the heat exchange tube 4 are connected to the two heat exchange chambers. Both guide vortices 2 have a group of openings 20 distributed in a circumferential array and connected to the heat exchange chambers. The heat exchange fluid outlet pipe 16 and the heat exchange fluid inlet pipe 18 are connected to the two heat exchange chambers.

[0044] An exchange chamber is provided inside the housing 1 and between the two guide vortex drums 2. The cold medium outlet pipe 17 and the hot medium inlet pipe 19 are both connected to the exchange chamber.

[0045] A group of regularly distributed liquid retaining seats 5 are rotatably mounted on the inner wall of the housing 1 and correspond to the position between the two eccentric retaining seats 3. An eccentric baffle 6 is rotatably mounted at the eccentric position of each liquid retaining seat 5. A plurality of full brush rings 7 and half brush rings 8 for cleaning the outer wall of the heat exchange tube 4 are fixedly mounted on the eccentric baffle 6.

[0046] The inner walls of the whole brush ring 7 and the half brush ring 8 are evenly covered with steel wire bristles that match the heat exchange fins. The steel wire bristles are stainless steel bristles. Through the arrangement of the steel wire bristles, the whole brush ring 7 and the half brush ring 8 can clean the impurities on the outer surface of the heat exchange tube 4 when they move relative to the heat exchange tube 4. By cleaning the impurities on the outer surface of the heat exchange tube 4, the dirt on the outer surface of the heat exchange tube 4 is effectively cleaned, and the high heat exchange surface area of ​​the heat exchange tube 4 is maintained, thereby maintaining the heat exchange efficiency of the heat exchanger;

[0047] Specifically, there are three liquid-blocking rotary seats 5, and the eccentric baffles 6 on the three liquid-blocking rotary seats 5 are staggered. Each full brush circle 7 and half brush circle 8 are coaxially arranged with the heat exchange tube 4 at the corresponding position;

[0048] The excitation generating module is installed on the right side of the device shell 1. The excitation generating module is connected to the excitation base 9 that can be moved back and forth along the axis of the device shell 1 and the rotatable inner shaft 10. The inner shaft 10 is rotatably installed on the excitation base 9. The outer shaft sleeve 11 is rotatably sleeved on the inner shaft 10. The inner shaft 10 and the outer shaft sleeve 11 are coaxial and reversely linked.

[0049] The excitation generating module includes a transmission inclined plate 21 and a bracket 23 mounted on the housing 1. A motor 22 is mounted on the bracket 23. A hollow shaft 24 and a small shaft 26 are rotatably mounted on the bracket 23. The hollow shaft 24 and the small shaft 26 are driven by the motor 22, and the inner shaft 10 is driven by the hollow shaft 24.

[0050] A coupling groove with two ends open is fixedly provided inside the hollow shaft 24, and a linkage section is fixedly provided on the inner shaft 10. The linkage section is slidably connected to the coupling groove, and the cross sections of the linkage section and the coupling groove are both regular polygons;

[0051] By setting the regular polygonal cross-section of the linkage section and the coupling groove, the hollow shaft 24 can continuously drive the inner shaft 10 during the displacement of the excitation base 9;

[0052] The output shaft end of the motor 22 is connected to the small shaft 26 through a chain belt. A first bevel gear is installed on the small shaft 26 and the hollow shaft 24, and the two first bevel gears are meshed with each other.

[0053] A set of elastic fastening members 40 are installed between the transmission inclined plate 21 and the excitation seat 9;

[0054] The elastic holding member 40 includes a first T-shaped guide rod mounted on the back of the transmission inclined plate 21, the first T-shaped guide rod being slidably connected to the excitation seat 9, and a holding spring being sleeved on the first T-shaped guide rod and corresponding to the position between the excitation seat 9 and the transmission inclined plate 21;

[0055] A set of elastic reset members 28 is installed between the excitation base 9 and the bracket 23;

[0056] The elastic reset member 28 includes a second T-shaped guide rod mounted on the back of the vibration base 9, the second T-shaped guide rod is slidably connected to the bracket 23, and a reset spring is sleeved on the second T-shaped guide rod and corresponding to the position between the bracket 23 and the vibration base 9;

[0057] A reciprocating drive member driven by a small shaft 26 is mounted on the bracket 23, and a semicircular inclined platform 29 is installed on the reciprocating drive member. The semicircular inclined platform 29 is in transmission connection with the transmission inclined plate 21.

[0058] The reciprocating drive member includes a screw rod 27 rotatably connected to the bracket 23. A torsion spring 25 is provided at the rotational connection between the screw rod 27 and the bracket 23. A bottom gear 43 is mounted on the bottom end of the screw rod 27. A half-tooth gear 30 is mounted on the bottom of the small shaft 26. The half-tooth gear 30 is transmission-connected to the bottom gear 43. The radius of the half-tooth gear 30 is 8 times the radius of the bottom gear 43. A reciprocating table 31 is transmission-mounted on the screw rod 27. A semicircular inclined table 29 is rotatably mounted on the reciprocating table 31. A through slot with open ends and slidably connected to the small shaft 26 is fixedly opened inside the semicircular inclined table 29. The cross-sections of the through slot and the small shaft 26 are both regular polygons.

[0059] When the small shaft 26 rotates at a set speed, the half-tooth gear 30 and the bottom gear 43 are arranged so that the screw rod 27 can reciprocate forward and reverse within a set period. After the screw rod 27 reciprocates forward and reverse within the set period, it drives the reciprocating table 31 to move back and forth. After the reciprocating table 31 moves back and forth, it reciprocates and changes the relative position of the semicircular inclined table 29 and the transmission inclined plate 21 and changes the single transmission stroke of the semicircular inclined table 29 to the transmission inclined plate 21, thereby realizing a cyclic transformation of the vibration stroke of the excitation seat 9 within a unit time.

[0060] By cyclically changing the vibration stroke of the vibration base 9 per unit time, the flushing intensity of the fluid on the inner and outer walls of the heat exchange tube 4 is cyclically changed, thereby maintaining the cleanliness of the inner and outer walls of the heat exchange tube 4;

[0061] The outer sleeve 11 is fixedly connected to the right guide swirl 2;

[0062] The eccentric rotating seat 3 on the right side is driven by the inner shaft 10;

[0063] It also includes a right gear ring 33 fixed on an inner shaft 10, a right gear 34 is installed on the right eccentric rotating seat 3, and the right gear 34 is transmission-connected to the right gear ring 33;

[0064] A reverse shaft 32 is rotatably mounted on the excitation seat 9, and a reverse bevel gear is mounted on the reverse shaft 32. A side bevel gear is mounted on each of the outer sleeve 11 and the inner shaft 10. Both side bevel gears are transmission-connected to the reverse bevel gear, and the two side bevel gears are respectively arranged on both sides of the reverse bevel gear.

[0065] By setting the counter shaft 32, the inner shaft 10 and the outer sleeve 11 are made to rotate in opposite directions on the same axis.

[0066] When the inner shaft 10 and the outer sleeve 11 rotate coaxially and in opposite directions, the guide vortex 2 rotates at a set speed. After the guide vortex 2 rotates, the right gear 34 is meshed with the right gear ring 33, so that the eccentric swivel 3 can rotate at a set speed during the revolution of the guide vortex 2. The revolution of the guide vortex 2 and the rotation of the eccentric swivel 3 are used to flush the heat exchange tube 4 up and down and left and right during the heat exchange process of the heat exchange tube 4. The heat exchange fluid flushes the heat exchange tube 4 up and down and left and right during the heat exchange process of the heat exchange tube 4. On the one hand, the point contact duration of impurities in the heat exchange fluid on the outer wall of the heat exchange tube 4 and the surface of the heat exchange fin is effectively reduced, thereby reducing the adhesion rate of impurities on the outer wall of the heat exchange tube 4 and the surface of the heat exchange fin. On the other hand, the heat exchange tube 4 can be in full-scale and multi-angle contact with the heat exchange fluid, thereby reducing the heat exchange dead angle of the heat exchange tube 4 and improving the heat exchange efficiency of the heat exchange tube 4.

[0067] A large pump shaft 13 is rotatably mounted inside an eccentric rotary seat 3, and a spiral pump blade 14 is mounted on the large pump shaft 13;

[0068] A left gear ring 12 is fixedly mounted on the inner wall of the left guide vortex 2, and a left gear 35 is mounted on the tail end of the large pump shaft 13. The left gear 35 is in transmission connection with the left gear ring 12.

[0069] When the large pump shaft 13 rotates eccentrically along with the eccentric rotating seat 3, the meshing connection between the left ring gear 12 and the left gear 35 enables the large pump shaft 13 to rotate at a set speed during the eccentric revolution. The rotation of the large pump shaft 13 drives the spiral pump blades 14 to rotate. After the spiral pump blades 14 rotate, they drive the heat exchange medium to flow from the heat medium inlet pipe 19 to the heat medium outlet pipe, thereby achieving heat exchange operation.

[0070] The large pump shaft 13 is provided with a plurality of high-pressure spray holes 15 and a high-pressure air intake component for supplying air to the high-pressure spray holes 15. A group of heat exchange tubes 4 are driven by the inner shaft 10;

[0071] The high-pressure air intake component includes a pump casing 36 installed on the device casing 1, and a filter is installed on the air intake port of the pump casing 36. A small pump shaft 37 is rotatably installed on the inner wall of the pump casing 36, and a second bevel gear is installed on the bottom end of the small pump shaft 37. The second bevel gear is transmission-connected to the first bevel gear on the hollow shaft 24. A group of pump blades distributed in a circular array are installed on the small pump shaft 37 and at a position corresponding to the inner side of the pump casing 36. The air outlet port of the pump casing 36 is connected to the pump air pipe 38, and an electromagnetic valve and a pressure gauge are respectively installed on the pump air pipe 38. A pump air duct is fixedly opened inside the large pump shaft 13, and the tail end of the pump air duct is rotatably connected to a corrugated connecting pipe 39, and the tail end of the corrugated connecting pipe 39 is connected to the pump air pipe 38.

[0072] By setting the high-pressure air inlet component, the pump housing 36 can continuously inflate air when the heat exchange operation of the heat exchange tube 4 is in progress. When the air pressure in the pump air pipe 38 reaches the set value, the solenoid valve opens instantaneously for a specified time, and then instantly pumps out the high-pressure gas in the pump air pipe 38. By pumping out the high-pressure gas, the scouring intensity of the fluid in the shell 1 on the surface of the heat exchange tube 4 is increased. When the solenoid valve is opened for a specified time, it automatically closes, thereby realizing the periodic auxiliary self-cleaning operation of impurities on the heat exchange tube 4.

[0073] A fixed gear ring 41 is fixedly mounted on a guide vortex 2, and a driven gear 42 is mounted on the heat exchange tube 4. The driven gears 42 on a group of heat exchange tubes 4 are meshed with each other, and the fixed gear ring 41 is transmission-connected to the driven gears 42 at adjacent positions.

[0074] The working principle of the present invention is: when the heat exchanger is used, the motor 22 outputs the speed at a set power. After the motor 22 outputs the speed, the inner shaft 10 and the outer shaft sleeve 11 rotate coaxially and in opposite directions. When the inner shaft 10 and the outer shaft sleeve 11 rotate coaxially and in opposite directions, the guide vortex 2 rotates at a set speed. After the guide vortex 2 rotates, the right gear 34 is engaged with the right gear ring 33, so that the eccentric vortex seat 3 can rotate at a set speed during the revolution of the guide vortex 2. The revolution of the guide vortex 2 and the rotation of the eccentric vortex seat 3 are used to realize the flushing of the heat exchange tube 4 up and down and left and right during the heat exchange process of the heat exchange tube 4. During the heating process, the heat exchange fluid flushes the heat exchange tube 4 up and down and left and right. On the one hand, it can effectively reduce the point contact duration of impurities in the heat exchange fluid on the outer wall of the heat exchange tube 4 and the surface of the heat exchange fin, thereby reducing the adhesion rate of impurities on the outer wall of the heat exchange tube 4 and the surface of the heat exchange fin. On the other hand, it enables the heat exchange tube 4 to contact the heat exchange fluid in all directions and angles, thereby reducing the heat exchange dead angle of the heat exchange tube 4 and improving the heat exchange efficiency of the heat exchange tube 4. When the small shaft 26 rotates at a set speed, the half-tooth gear 30 and the bottom gear 43 are set to enable the screw rod 27 to reciprocate forward and reverse within a set period. After the screw rod 27 reciprocates forward and reverse within the set period, it drives the reciprocating table 31 to move back and forth. After the reciprocating table 31 moves back and forth, it then reciprocates to change the relative position of the semicircular inclined table 29 and the transmission inclined plate 21 and changes the single transmission stroke of the semicircular inclined table 29 to the transmission inclined plate 21, thereby realizing the cyclic transformation of the vibration stroke of the excitation seat 9 within a unit time. By cyclically transforming the vibration stroke of the excitation seat 9 within a unit time, the flushing intensity of the fluid on the inner and outer walls of the heat exchange tube 4 is cyclically changed, thereby maintaining the cleanliness of the inner and outer walls of the heat exchange tube 4. When the large pump shaft 13 rotates eccentrically with the eccentric rotating seat 3, the meshing connection between the left ring gear 12 and the left gear 35 is set, so that the large pump shaft 13 can rotate at a set speed during the eccentric revolution. 3. The self-rotation rotation drives the spiral pump blade 14 to rotate. After the spiral pump blade 14 rotates, it drives the heat exchange medium to flow from the heat medium inlet pipe 19 to the heat medium outlet pipe, thereby realizing the heat exchange operation. By setting the high-pressure air inlet component, the pump housing 36 can continuously inflate the heat exchange tube 4 during the heat exchange operation. When the air pressure in the pump air pipe 38 reaches the set value, the solenoid valve opens instantaneously for a specified time, and then instantly pumps out the high-pressure gas in the pump air pipe 38. By pumping out the high-pressure gas, the scouring intensity of the fluid in the shell 1 on the surface of the heat exchange tube 4 is increased. When the solenoid valve is opened for a specified time, it automatically closes, thereby realizing the periodic auxiliary self-cleaning operation of impurities on the heat exchange tube 4.

[0075] While the 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 alterations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A tube-fin shell-and-tube heat exchanger, comprising a shell (1), wherein a fluid exchange component is provided on the shell (1), characterized in that: The inner side of the shell (1) is provided with two symmetrically arranged flow guide swirls (2), the eccentric positions of the two flow guide swirls (2) are both rotatably mounted with an eccentric rotary seat (3), a group of regularly distributed heat exchange tubes (4) are rotatably connected between the two eccentric rotary seats (3), the inner wall of the shell (1) and the position corresponding to the position between the two eccentric rotary seats (3) are rotatably mounted with a group of regularly distributed liquid retaining rotary seats (5), the eccentric position of each liquid retaining rotary seat (5) is rotatably mounted with an eccentric baffle (6), and a plurality of full brush rings (7) and half brush rings (8) for cleaning the outer wall of the heat exchange tube (4) are fixedly mounted on the eccentric baffle (6); An excitation generating module is installed on the right side of the device shell (1). The excitation generating module is connected to an excitation seat (9) that can be moved back and forth along the axis of the device shell (1) and a rotatable inner shaft (10). The inner shaft (10) is rotatably installed on the excitation seat (9). An outer shaft sleeve (11) is rotatably provided on the inner shaft (10). The inner shaft (10) and the outer shaft sleeve (11) are coaxially linked in reverse. The outer shaft sleeve (11) is fixedly connected to the right side guide vortex (2). The right side eccentric vortex seat (3) is driven by the inner shaft (10). A rotatable large pump shaft (13) is rotatably installed inside the eccentric vortex seat (3). A spiral pump blade (14) is installed on the large pump shaft (13). A plurality of high-pressure spray holes (15) are provided on the large pump shaft (13). A high-pressure air inlet component for supplying air to the high-pressure spray hole (15); A group of heat exchange tubes (4) are all driven by an inner shaft (10).

2. The tube-fin shell-and-tube heat exchanger according to claim 1, characterized in that: The fluid exchange component comprises a heat exchange liquid outlet pipe (16) and a cold medium outlet pipe (17) installed on the top of the shell (1); a heat exchange liquid inlet pipe (18) and a hot medium inlet pipe (19) are respectively installed on the bottom of the shell (1); a heat exchange liquid flow chamber is provided inside the two guide vortices (2); the two ends of the heat exchange pipe (4) are respectively connected to the two heat exchange liquid flow chambers; a group of openings (20) distributed in a circumferential array and connected to the heat exchange liquid flow chambers are provided on the two guide vortices (2); the heat exchange liquid outlet pipe (16) and the heat exchange liquid inlet pipe (18) are respectively connected to the two heat exchange liquid flow chambers; an exchange chamber is provided inside the shell (1) and at a position corresponding to the position between the two guide vortices (2); the cold medium outlet pipe (17) and the hot medium inlet pipe (19) are both connected to the exchange chamber.

3. The tube-fin shell-and-tube heat exchanger according to claim 1, characterized in that: The excitation generating module comprises a transmission inclined plate (21) and a bracket (23) mounted on the device housing (1), a motor (22) is mounted on the bracket (23), a hollow shaft (24) and a small shaft (26) are respectively rotatably mounted on the bracket (23), the hollow shaft (24) and the small shaft (26) are both driven by the motor (22), and the inner shaft (10) is driven by the hollow shaft (24), a group of elastic pressing members (40) are mounted between the transmission inclined plate (21) and the excitation seat (9), a group of elastic reset members (28) are mounted between the excitation seat (9) and the bracket (23), a reciprocating driving member driven by the small shaft (26) is mounted on the bracket (23), a semicircular inclined platform (29) is transmission-mounted on the reciprocating driving member, and the semicircular inclined platform (29) is transmission-connected to the transmission inclined plate (21).

4. The tube-fin shell-and-tube heat exchanger according to claim 3, characterized in that: A coupling groove with two ends open is fixedly provided inside the hollow shaft (24), a linkage section is fixedly provided on the inner shaft (10), the linkage section is slidably connected to the coupling groove, and the cross sections of the linkage section and the coupling groove are both regular polygons. The output shaft end of the motor (22) is transmission-connected to the small shaft (26) through a chain belt, and a first bevel gear is installed on both the small shaft (26) and the hollow shaft (24), and the two first bevel gears are meshed with each other.

5. The tube-fin shell-and-tube heat exchanger according to claim 3, characterized in that: The reciprocating drive member includes a screw rod (27) rotatably connected to the bracket (23), a torsion spring (25) is provided at the rotation connection between the screw rod (27) and the bracket (23), a bottom gear (43) is installed at the bottom end of the screw rod (27), a half-tooth gear (30) is installed at the bottom of the small shaft (26), the half-tooth gear (30) is transmission-connected to the bottom gear (43), the radius of the half-tooth gear (30) is 7 times to 9 times the radius of the bottom gear (43), a reciprocating platform (31) is transmission-mounted on the screw rod (27), the semicircular inclined platform (29) is rotationally mounted on the reciprocating platform (31), the interior of the semicircular inclined platform (29) is fixedly provided with a through groove with two ends opened and slidably connected to the small shaft (26), and the cross sections of the through groove and the small shaft (26) are both regular polygons.

6. The tube-fin shell-and-tube heat exchanger according to claim 1, characterized in that: A reverse shaft (32) is rotatably mounted on the excitation seat (9), a reverse bevel gear is mounted on the reverse shaft (32), and a side bevel gear is mounted on both the outer sleeve (11) and the inner shaft (10), the two side bevel gears are both transmission-connected to the reverse bevel gear, and the two side bevel gears are respectively arranged on both sides of the reverse bevel gear.

7. The tube-fin shell-and-tube heat exchanger according to claim 1, characterized in that: The pump further comprises a right gear ring (33) fixed on an inner shaft (10), a right gear (34) is installed on the right side of the eccentric rotary seat (3), and the right gear (34) is in transmission connection with the right gear ring (33), a left gear ring (12) is fixedly installed on the inner wall of the left side of the guide swirl (2), and a left gear (35) is installed at the tail end of the large pump shaft (13), and the left gear (35) is in transmission connection with the left gear ring (12).

8. The tube-fin shell-and-tube heat exchanger according to claim 1, characterized in that: The high-pressure air intake component includes a pump housing (36) mounted on the housing (1), an air intake port of the pump housing (36) is installed with a filter, a small pump shaft (37) is rotatably mounted on the inner wall of the pump housing (36), a second bevel gear is mounted on the bottom end of the small pump shaft (37), the second bevel gear is transmission-connected to the first bevel gear on the hollow shaft (24), a group of pump blades distributed in a circumferential array are mounted on the small pump shaft (37) and at a position corresponding to the inner side of the pump housing (36), an air outlet port of the pump housing (36) is connected to a pump air pipe (38), an electromagnetic valve and a pressure gauge are respectively installed on the pump air pipe (38), a pump air channel is fixedly opened inside the large pump shaft (13), the tail end of the pump air channel is rotatably connected to a corrugated joint pipe (39), and the tail end of the corrugated joint pipe (39) is connected to the pump air pipe (38).

9. The tube-fin shell-and-tube heat exchanger according to claim 1, characterized in that: The heat exchange tube (4) is a hollow tubular structure with two ends open. A group of heat exchange fins are installed on the heat exchange tube (4). The inner walls of the full brush ring (7) and the half brush ring (8) are evenly covered with steel wire bristles that match the heat exchange fins.

10. The tube-fin shell-and-tube heat exchanger according to claim 1, characterized in that: A fixed gear ring (41) is fixedly mounted on one of the guide vortex drums (2), and a passive gear (42) is mounted on the heat exchange tube (4). A group of passive gears (42) on the heat exchange tube (4) are meshed with each other, and the fixed gear ring (41) is transmission-connected to the passive gear (42) at an adjacent position.

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