Finned tube shell-and-tube heat exchanger

Abstract

The invention relates to the technical field of heat exchangers, and discloses a finned tube shell type heat exchanger. Comprising a device shell, a fluid exchange component is arranged on the device shell, two symmetrically-arranged flow guide rotating cylinders are arranged on the inner side of the device shell, eccentric rotating bases are rotationally installed at the eccentric positions of the two flow guide rotating cylinders correspondingly, and a set of regularly-distributed heat exchange pipes are rotationally connected between the two eccentric rotating bases; a set of regularly-distributed liquid blocking rotating bases are rotationally installed at the position, corresponding to the position between the two eccentric rotating bases, of the inner wall of the device shell, an eccentric baffle is rotationally installed at the eccentric position of each liquid blocking rotating base, a plurality of whole brush rings and half brush rings for cleaning the outer walls of the heat exchange pipes are fixedly arranged on the eccentric baffles, and the excitation generation module is installed on the right side of the device shell. Through revolution of the flow guide rotary cylinder and rotation of the eccentric rotary seat, fluid in the heat exchange chamber washes the heat exchange pipe up and down and left and right in the heat exchange process of the heat exchange pipe.

Description

Technical Field

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

[0002] Shell and tube heat exchanger is a partition-type heat exchanger that uses 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, 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, the patent document with publication number CN117029536A discloses a shell and tube heat exchanger, which includes a tubular shell, end covers are fixedly connected to both ends of the shell, a cluster tube is fixedly connected to the outer end face of each end cover, a cover plate is fixedly connected to the inner end face of the end cover, and a plurality of plugging components are evenly arranged on the cover plate; the plugging component includes a base block and a sleeve; the base block is fixedly connected to the cover plate, a plug hole is provided 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 plug hole. The above heat exchanger can reduce the cost of cleaning and replacing the medium pipe, but the above heat exchanger has the following technical problems when used:

[0004] 1. It is not convenient to realize the multi-directional flushing of the heat exchange fluid on the heat exchange tube during the heat exchange process of the heat exchange tube 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 flushing 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, which solves the problems mentioned in the background art that the existing heat exchanger is not convenient for realizing multi-directional flushing of the heat exchange tube by the heat exchange fluid during the heat exchange process of the heat exchange tube and maintaining the high heat exchange surface area of ​​the heat exchange tube, is not convenient for realizing self-cleaning of the heat exchange tube by periodic pressurization, and is not convenient for cyclically changing the flushing intensity of the heat exchange fluid on the heat exchange tube. 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 is arranged on the shell, two symmetrically arranged flow guide swirls are arranged on the inner side of the shell, an eccentric swirl seat is rotatably mounted at the eccentric position of the two flow guide swirls, a group of regularly distributed heat exchange tubes are rotatably connected between the two eccentric swirl seats, a group of regularly distributed liquid retaining swirl seats are rotatably mounted on the inner wall of the shell and corresponding to the position between the two eccentric swirl seats, an eccentric baffle is 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 for cleaning the outer wall of the heat exchange tube are fixedly arranged on the eccentric baffle plate;

[0010] An excitation generating module is installed on the right side of the shell, and the excitation generating module is transmission-connected with an excitation seat that can be reciprocated and displaced along the axis of the 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 and reversely linked, the outer shaft sleeve is fixedly connected to the guide swivel on the right side, the eccentric swivel seat on the right side is driven by the inner shaft, a rotatable large pump shaft is rotatably installed inside the eccentric swivel seat, a spiral pump blade is installed on the large pump shaft, and a plurality of groups 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, 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 opened inside the two guide vortices, both ends of the heat exchange pipe are connected with the two heat exchange liquid flow chambers respectively, a group of openings distributed in a circular array and connected with the heat exchange liquid flow chambers are opened on the two guide vortices, the heat exchange liquid outlet pipe and the heat exchange liquid inlet pipe are respectively connected with 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, and the cold medium outlet pipe and the hot medium inlet pipe are both connected with the exchange chamber.

[0014] Preferably, the excitation generating module includes a transmission inclined plate and a bracket installed on the device shell, 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 fastening parts are installed between the transmission inclined plate and the vibration seat, a group of elastic reset parts are installed between the vibration seat and the bracket, a reciprocating driving part driven by the small shaft is installed on the bracket, a semicircular inclined table is transmission-mounted on the reciprocating driving part, and the semicircular inclined table 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 slidably 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 transmission-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 rotating 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 to 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, a through groove with openings at both ends fixedly opened inside the semicircular inclined table and slidably 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, the two 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 on 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 intake 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, a second bevel gear is installed on the bottom end of the small pump shaft, 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 with a pump air pipe, a solenoid 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 with 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 distributed with steel wire bristles that match the heat exchange fins.

[0021] Preferably, a fixed gear ring is fixedly mounted on the guide vortex cylinder, a passive gear is mounted on the heat exchange tube, a group of passive gears on the heat exchange tube are meshed with each other, and the fixed gear ring is drivingly connected to the passive gear at an adjacent position.

[0022] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0023] 1. When the heat exchanger is used, the motor outputs the speed at the set power. After the motor outputs the speed, the inner shaft and the outer shaft sleeve rotate coaxially in opposite directions. When the inner shaft and the outer shaft sleeve rotate coaxially in opposite directions, the guide swirl rotates at the set speed. After the guide swirl rotates, the right gear and the right gear ring are meshed and connected, so that the eccentric swivel seat can rotate at the set speed during the revolution of the guide swirl. The revolution of the guide swirl and the rotation of the eccentric swivel seat 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 of the heat exchange tube. The heat exchange fluid flushes the heat exchange tube up and down and left and right during the heat exchange process of the heat exchange tube. 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, the heat exchange tube can be in full-range and multi-angle contact with the heat exchange fluid, 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 gear ring and the left gear is set, so that the large pump shaft can rotate at a set speed during the eccentric revolution and 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 shell can be continuously inflated during the heat exchange operation of the heat exchange tube. When the air pressure in the pump air pipe reaches the set value, the solenoid valve is instantly opened 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 is automatically closed, 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 reciprocates and 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 a unit time. By cyclically changing the vibration stroke of the vibration seat within a 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 A schematic diagram of the cross-sectional structure of;

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

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

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

[0031] Figure 6 It is a schematic diagram of the structure 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 schematic diagram of the structure of the heat exchange tube and the passive gear;

[0034] Fig. 9 It is a schematic diagram of the structure of the high-pressure spray hole and the large pump shaft;

[0035] Fig.10 It is a structural schematic diagram of the half-tooth gear and the exciting seat;

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

[0037] Among them: 1. Shell; 2. Diversion swirl; 3. Eccentric swirl seat; 4. Heat exchange tube; 5. Liquid retaining swirl seat; 6. Eccentric baffle; 7. Whole 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. Open; 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 gear ring; 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 gear ring; 42. Passive gear; 43. Bottom gear. DETAILED DESCRIPTION

[0038] 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.

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

[0040] Two symmetrically arranged flow guide swirls 2 are arranged inside the shell 1. An eccentric swirl seat 3 is rotatably mounted at the eccentric position of the two flow guide swirls 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 openings at both ends, 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] The two guide vortices 2 are provided with heat exchange liquid flow chambers inside, and the two ends of the heat exchange tube 4 are respectively connected to the two heat exchange liquid flow chambers. The two guide vortices 2 are provided with a group of openings 20 distributed in a circumferential array and connected to the heat exchange liquid flow chambers, and 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.

[0044] An exchange chamber is provided inside the housing 1 and at a position corresponding to the position between the two flow guide swirls 2, and 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 rotary seats 5 are rotatably installed on the inner wall of the shell 1 and correspond to the position between the two eccentric rotary seats 3. An eccentric baffle plate 6 is rotatably installed at the eccentric position of each liquid retaining rotary 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 arranged on the eccentric baffle plate 6.

[0046] The inner walls of the whole brush ring 7 and the half brush ring 8 are uniformly 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 can be 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 retaining rotary seats 5, and the eccentric baffles 6 on the three liquid retaining rotary seats 5 are staggered, and 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 module is installed on the right side of the shell 1. The excitation module is connected to an excitation seat 9 that can be reciprocated along the axis of the 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 sleeved on the inner shaft 10. The inner shaft 10 and the outer shaft sleeve 11 are coaxially and reversely linked.

[0049] The excitation 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, and the linkage section is slidably connected with 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 linkage groove, the hollow shaft 24 can continuously drive the inner shaft 10 during the displacement of the excitation seat 9;

[0052] The output shaft end of the motor 22 is connected to the small shaft 26 through a chain belt, and 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 is installed between the transmission inclined plate 21 and the exciting seat 9;

[0054] The elastic holding member 40 comprises a first T-shaped guide rod mounted on the back of the transmission inclined plate 21, the first T-shaped guide rod is slidably connected to the vibration base 9, and a holding spring is sleeved on the first T-shaped guide rod and corresponds to the position between the vibration base 9 and the transmission inclined plate 21;

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

[0056] The elastic reset member 28 comprises 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 at a position 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 installed on the bracket 23, and a semicircular inclined platform 29 is installed on the reciprocating drive member, and the semicircular inclined platform 29 is connected to 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 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-toothed gear 30 is installed at the bottom of the small shaft 26, the half-toothed gear 30 is transmission-connected with the bottom gear 43, the radius of the half-toothed gear 30 is 8 times the radius of the bottom gear 43, a reciprocating table 31 is transmission-installed on the screw rod 27, a semicircular inclined table 29 is rotatably installed on the reciprocating table 31, a through groove with openings at both ends fixedly opened inside the semicircular inclined table 29 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;

[0059] When the small shaft 26 rotates at a set speed, the half-toothed gear 30 and the bottom gear 43 are set so that the screw rod 27 can reciprocate in a set period. After the screw rod 27 reciprocates in a set period, the reciprocating table 31 is driven to reciprocate. After the reciprocating table 31 reciprocates, the relative position of the semicircular inclined table 29 and the transmission inclined plate 21 is reciprocated and the single transmission stroke of the semicircular inclined table 29 to the transmission inclined plate 21 is changed, thereby realizing the 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 seat 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-side 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 with the right gear ring 33;

[0064] A reverse shaft 32 is rotatably mounted on the excitation seat 9, a reverse bevel gear is mounted on the reverse shaft 32, a side bevel gear is mounted on both the outer sleeve 11 and the inner shaft 10, both side bevel gears are transmission-connected with 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 reverse shaft 32, the inner shaft 10 and the outer sleeve 11 are in a coaxial reverse rotation state when rotating;

[0066] When the inner shaft 10 and the outer shaft sleeve 11 rotate coaxially and in opposite directions, the flow guide swirl 2 rotates at a set speed. After the flow guide swirl 2 rotates, the right gear 34 is meshed and connected with the right gear ring 33, so that the eccentric swirl seat 3 can rotate at a set speed during the revolution of the flow guide swirl 2. The revolution of the flow guide swirl 2 and the rotation of the eccentric swirl seat 3 can realize the up-down and left-right flushing of the heat exchange tube 4 by the fluid in the heat exchange chamber during the heat exchange of the heat exchange tube 4. The up-down and left-right flushing effect of the heat exchange fluid on the heat exchange tube 4 during the heat exchange of the heat exchange tube 4 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, the heat exchange tube 4 can be in full-range 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 rotatable 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 drum 2, and a left gear 35 is mounted on the tail end of the large pump shaft 13, and the left gear 35 is transmission-connected to the left gear ring 12;

[0069] When the large pump shaft 13 rotates eccentrically with the eccentric rotating seat 3, the meshing connection between the left gear ring 12 and the left gear 35 enables the large pump shaft 13 to rotate at a set speed during the eccentric revolution. The large pump shaft 13 rotates by itself to drive 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.

[0070] A plurality of high-pressure spray holes 15 and a high-pressure air intake component are provided on the large pump shaft 13 for supplying air to the high-pressure spray holes 15, and 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 at 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 at 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 a 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 is instantly opened for a specified time, and then the high-pressure gas in the pump air pipe 38 is instantly pumped out. By pumping out the high-pressure gas, the flushing 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 is automatically closed, and then the periodic auxiliary self-cleaning operation of impurities on the heat exchange tube 4 is realized;

[0073] A fixed gear ring 41 is fixedly mounted on a guide vortex drum 2, a passive gear 42 is mounted on a 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 drivingly connected to the passive gear 42 at an adjacent position.

[0074] The working principle of the present invention is as follows: 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 flow guide swirl 2 rotates at a set speed. After the flow guide swirl 2 rotates, the right gear 34 is meshed and connected with the right gear ring 33, so that the eccentric swirl seat 3 can rotate at a set speed during the revolution of the flow guide swirl 2. The revolution of the flow guide swirl 2 and the rotation of the eccentric swirl seat 3 can realize the flushing of the heat exchange tube 4 up and down and left and right during the heat exchange 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 fins, thereby reducing the adhesion rate of impurities on the outer wall of the heat exchange tube 4 and the surface of the heat exchange fins. 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, 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, the relative position of the semicircular inclined table 29 and the transmission inclined plate 21 is reciprocated and the single transmission stroke of the semicircular inclined table 29 to the transmission inclined plate 21 is changed, so as to realize the cyclic transformation of the vibration stroke of the vibration seat 9 within a unit time. By cyclically transforming the vibration stroke of the vibration 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, and the cleanliness of the inner and outer walls of the heat exchange tube 4 is maintained. When the large pump shaft 13 rotates with the eccentric revolution of the eccentric rotating seat 3, the meshing connection arrangement of the left gear ring 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 occurs to drive 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 intake 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 is instantly opened for a specified time, and then the high-pressure gas in the pump air pipe 38 is instantly pumped out. By pumping out the high-pressure gas, the flushing 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 is automatically closed, thereby realizing the periodic auxiliary self-cleaning operation of impurities on the heat exchange tube 4;

[0075] Although 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 thereof, and the scope of the present 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 swivel seat (3), a group of regularly distributed heat exchange tubes (4) are rotatably connected between the two eccentric swivel seats (3), the inner wall of the shell (1) and corresponding to the position between the two eccentric swivel seats (3) are rotatably mounted with a group of regularly distributed liquid retaining swivel seats (5), the eccentric position of each liquid retaining swivel seat (5) is rotatably mounted with an eccentric baffle plate (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 plate (6); An excitation generating module is installed on the right side of the shell (1). The excitation generating module is transmission-connected with an excitation seat (9) that can be reciprocated and displaced along the axis direction of the 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 sleeved 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 guide swivel (2) on the right side. The eccentric swivel seat (3) on the right side is driven by the inner shaft (10). A rotatable large pump shaft (13) is rotatably installed inside the eccentric swivel seat (3). A spiral pump blade (14) is installed on the large pump shaft (13). A plurality of groups of high-pressure spray holes (15) are provided on the large pump shaft (13); A high-pressure air intake component, used 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 housing (1), a motor (22) being mounted on the bracket (23), a hollow shaft (24) and a small shaft (26) being rotatably mounted on the bracket (23), the hollow shaft (24) and the small shaft (26) being driven by the motor (22), the inner shaft (10) being driven by the hollow shaft (24), a group of elastic abutting members (40) being mounted between the transmission inclined plate (21) and the excitation seat (9), a group of elastic reset members (28) being mounted between the excitation seat (9) and the bracket (23), a reciprocating driving member driven by the small shaft (26) being mounted on the bracket (23), a semicircular inclined platform (29) being transmission-mounted on the reciprocating driving member, and the semicircular inclined platform (29) being 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 openings at both ends 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, 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, 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 comprises a screw rod (27) rotatably connected to the bracket (23), a torsion spring (25) is arranged 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 with the bottom gear (43), the radius of the half-tooth gear (30) is 7 to 9 times the radius of the bottom gear (43), a reciprocating platform (31) is transmission-connected on the screw rod (27), the semicircular inclined platform (29) is rotatably installed on the reciprocating platform (31), a through groove with two ends opened and slidably connected to the small shaft (26) is fixedly provided inside the semicircular inclined platform (29), 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), one side bevel gear is mounted on both the outer shaft 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.

7. The tube-fin shell and tube heat exchanger according to claim 1, characterized in that: It also includes 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 driving connection with the right gear ring (33), a left gear ring (12) is fixedly installed on the inner wall of the guide rotary cylinder (2) on the left side, and a left gear (35) is installed at the tail end of the large pump shaft (13), and the left gear (35) is in driving 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 comprises a pump housing (36) mounted on the housing (1); a filter is installed at the air intake port of the pump housing (36); a small pump shaft (37) is rotatably mounted on the inner wall of the pump housing (36); a second bevel gear is installed at 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 installed 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); a solenoid valve and a pressure gauge are respectively installed on the pump air pipe (38); a pump air passage is fixedly opened inside the large pump shaft (13); a corrugated connecting pipe (39) is rotatably connected to the tail end of the pump air passage; the tail end of the corrugated connecting 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 openings at both ends. 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 distributed 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 the guide vortex drum (2), 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 drivingly connected to the passive gear (42) at an adjacent position.

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