Tubular heat exchanger convenient to assemble

Abstract

The invention discloses a tube type heat exchanger convenient to assemble, and belongs to the technical field of tube type heat exchangers, the tube type heat exchanger comprises a heat exchanger shell and a butt joint pipe, and a clamping assembly is arranged between the heat exchanger shell and the butt joint pipe; a sliding plate is arranged in the upper connecting plate in a sliding manner; a cleaning assembly is arranged on the surface of the sliding plate and comprises a brush plate connected into the sliding plate in an inserted mode. According to the tube type heat exchanger convenient to assemble, when a butt joint pipe needs to be installed on a heat exchanger shell, a lap joint plate is aligned with an outer plate and a transverse rod, the butt joint pipe is inserted into the heat exchanger shell, and at the moment, a limiting block can be pushed by the lap joint plate to move in the direction of extruding a first spring; the limiting block pops up under the action of the first spring, at the moment, the butt joint pipe is installed on the heat exchanger shell under the action of the positioning plate and the limiting block, the operation process is rapid and convenient, the working efficiency is high, and no extra disassembling tool is needed.

Description

Technical Field

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

[0002] In the process of industrial production, a large amount of high-temperature waste heat fluid will be generated. If these waste heat fluids are discharged directly, a large amount of heat energy will be wasted, and then a shell-and-tube heat exchanger is needed. The shell-and-tube heat exchanger is a common chemical equipment. When it is working, it mainly plays a role in the heat exchange between two different temperatures, so that the heat can be absorbed and then used in other locations, such as heating domestic water in the factory area. When assembling the shell-and-tube heat exchanger, the staff needs to carry more disassembly and assembly tools. If the staff forgets to bring special disassembly and assembly tools, it will complicate the assembly process of the shell-and-tube heat exchanger, which will bring unnecessary trouble to the assembly process.

[0003] In order to overcome the above-mentioned defects, prior art 1 (Chinese patent application with application number 202222767825.9 and application date 2022-10-20) is a shell-and-tube heat exchanger that is easy to assemble. When it is working, the shell is fixedly installed in a fixed ring and rotated with the bearing installed in the fixed ring. In this way, the orientation of the first joint, the second joint, the third joint and the fourth joint can be adjusted, and the rotation adjustment can be performed according to the position of the pipelines connected in different directions. The rotation adjustment structure is simple and convenient for the staff to operate, thereby achieving the effect of improving practicality. Prior art 2 (Chinese patent application with application number 202210693871.0 and application date 2022 -06-19 Chinese patent application) A tube core rapid assembly tool and assembly method for a shell-and-tube heat exchanger. When it is working, a plurality of movable brackets are arranged above the brackets and the slideway. The movable brackets can respectively install, adjust and fix the front end tube sheet and the heat exchanger baffle of the heat exchanger. After the tube is inserted, the heat exchanger cylinder and the heat exchanger tube core are made concentric by the adjustable roller frame through the hydraulic group. The heat exchanger tube core is pulled horizontally by the movable bracket and gradually inserted into the heat exchanger cylinder by the traction of a hand winch or a winch. The present invention can greatly improve the assembly efficiency, reduce labor intensity, avoid the waste of auxiliary materials and welding materials, avoid the use of an overhead crane as a power device, and avoid safety hazards.

[0004] However, after the shell and tube heat exchanger is used for a long time, scale will be generated on the shell of the heat exchanger, which will affect the subsequent disassembly process. The heat exchanger in the above application does not have a structure to assist disassembly during use, which will affect the disassembly of the heat exchanger by the staff, resulting in reduced work efficiency. At the same time, after long-term use, a lot of dust will accumulate on the surface of the heat exchanger shell, which will affect the heat transfer efficiency and destroy convection. The heat exchanger in the above application does not have a surface self-cleaning structure during use, which reduces the working efficiency of the heat exchanger. Summary of the invention

[0005] The object of the present invention is to provide a shell-and-tube heat exchanger that is easy to assemble, so as to solve the problems raised in the above-mentioned background technology that during use, there is no structure to assist disassembly, which affects the disassembly of the heat exchanger by the staff, resulting in reduced work efficiency; and during use, there is no structure for self-cleaning of the surface, which reduces the working efficiency of the heat exchanger.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a shell and tube heat exchanger that is easy to assemble, comprising a heat exchanger shell and a butt tube, a clamping assembly is arranged between the heat exchanger shell and the butt tube, and the heat exchanger shell and the butt tube are connected through the clamping assembly, and an upper connecting plate is fixedly connected to the upper surface of the heat exchanger shell, and the clamping assembly comprises a fixing plate fixedly connected to the surface of the heat exchanger shell; a sliding plate is slidably arranged inside the upper connecting plate; a cleaning assembly is arranged on the surface of the sliding plate, and the cleaning assembly comprises a brush plate inserted and connected inside the sliding plate, and when the cleaning assembly is working, dust is swept away from the heat exchanger shell; a cleaning assembly is arranged between the sliding plate and the upper connecting plate, and the cleaning assembly comprises an air bag adhered to the upper surface of the upper connecting plate, and a nozzle is arranged on the surface of the air bag, and when the cleaning assembly is working, dust is blown away from the heat exchanger shell.

[0007] Preferably, the snap-fit ​​assembly further comprises a lap plate fixedly connected to the outer surface of the butt-jointed tube, and the diameter of the butt-jointed tube is smaller than the diameter of the heat exchanger shell, and the surface of the fixed plate is fixedly connected to an outer plate.

[0008] Preferably, limit blocks are slidably provided on both upper and lower sides of the outer plate, and the surfaces of the limit blocks are inclined, and the outer plates are symmetrically distributed on the front and rear sides of the fixed plate.

[0009] Preferably, a positioning plate is fixedly connected to the outer wall of the butt joint tube, a guide rod is fixedly connected to the inner wall of the outer plate, and the end of the guide rod is movably arranged inside the limit block.

[0010] Preferably, a first spring having an elastic reset function is fixedly connected to the surface of the limit block, and the other side of the first spring is fixedly connected to the inner wall of the outer plate.

[0011] Preferably, a working rod is fixedly connected to the surface of the limit block, and the working rod is an inverted "L" structure when viewed from the front, and the end of the working rod is located on the outside of the outer plate, and a cross bar is fixedly connected to the surface of the fixed plate, and the cross bars are symmetrically distributed on the upper and lower sides of the fixed plate, and a movable plate is sleeved and connected to the surface of the cross bar, and a second spring that plays an elastic reset role is fixedly connected to the surface of the movable plate, and the other side of the second spring is fixedly connected to the surface of the fixed plate.

[0012] Preferably, the upper connecting plate is an inverted "U" shape when viewed from the front, and the cleaning assembly also includes a long pin fixedly connected to the inner wall of the upper connecting plate, and the left outer surface of the upper connecting plate is bolted to a motor, and the output end of the motor is fixedly connected to a bidirectional threaded rod.

[0013] Preferably, the surface of the bidirectional threaded rod is bolted to the slide plate, the upper surface of the brush plate is movably connected to a plug plate, and the plug plate is plugged and connected to the inside of the slide plate.

[0014] Preferably, the cleaning assembly further comprises a column slidably arranged inside the upper connecting plate, and the lower surface of the column is fixedly connected to a force-bearing plate, and the lower surface of the force-bearing plate is fixedly connected to a second magnet, the upper surface of the slide plate is fixedly connected to a first magnet, and the magnetic poles of the upper surface of the first magnet are opposite to the magnetic poles of the lower surface of the second magnet, and the second magnets are evenly spaced on the lower surface of the force-bearing plate. The upper end of the column is fixedly connected to a pressure plate, and the lower surface of the pressure plate fits the upper surface of the airbag, and the left and right sides of the airbag are fixedly connected to an air inlet pipe, the front and rear side surfaces of the airbag are fixedly connected to an air outlet pipe, and the end of the air outlet pipe is fixedly connected to a nozzle, and the nozzle is arranged vertically downward, and the surfaces of the air outlet pipe and the air inlet pipe are fixedly connected to a one-way valve.

[0015] Preferably, a bracket is fixedly connected to the lower surface of the heat exchanger shell, and an inner plate is fixedly connected between adjacent brackets, and an upper connecting block is fixedly connected to the upper surface of the inner plate at equal intervals, the upper surface of the brush plate is fixedly connected to the inner block, and the lower surface of the brush plate is fixedly connected to the lower connecting block, and the surface of the lower connecting block and the surface of the upper connecting block are both inclined, an inner rod is fixedly connected to the inner wall of the plug plate, and the inner rod passes through the interior of the inner block.

[0016] Compared with the prior art, the beneficial effects of the present invention are: adopting a new structural design, by setting a butt-joint pipe that can be quickly assembled and disassembled, the whole device can be quickly assembled, not only does it not require the staff to carry additional disassembly and assembly tools, but the diameter of the butt-joint pipe is smaller than the diameter of the heat exchanger shell, ensuring that no leakage occurs when the internal material flows. In addition, in order to prevent the working efficiency of the heat exchanger shell from decreasing, a brush plate and a nozzle that can clean dust are also provided. When the brush plate is working, it can sweep the dust, and when the nozzle is working, it can blow away the dust, so that impurities and dust can be better cleaned, and the efficiency is improved. The specific contents are as follows: The easy-to-assemble shell-and-tube heat exchanger, when the butt-joint pipe needs to be installed on the heat exchanger shell, align the lap plate with the outer plate and the cross bar, and insert the butt-joint pipe into the heat exchanger shell. At this time, the limit block will be pushed by the lap plate and move in the direction of squeezing the first spring. After the positioning plate contacts the heat exchanger shell, the limit block pops out under the action of the first spring. At this time, the butt-joint pipe is installed on the heat exchanger shell under the action of the positioning plate and the limit block. The operation process is quick and convenient, the work efficiency is high, and no additional disassembly and assembly tools are required.

[0017] Furthermore, after long-term use, when the butt tube needs to be removed, the working rod can be pressed to drive the limit block to move toward the inside of the outer panel. When the end of the limit block completely enters the outer panel, the butt tube and the lap plate can be removed. The disassembly process has simple operating steps and high work efficiency.

[0018] Furthermore, during the movement of the limit block, the guide rod makes the limit block move only in the vertical direction. The guide rod ensures the stability of the movement of the limit block. At the same time, the diameter of the connecting pipe is smaller than the diameter of the heat exchanger shell, ensuring that no leakage occurs when the internal material flows.

[0019] The shell-and-tube heat exchanger which is easy to assemble has a movable plate that slides on the surface of the cross bar during the installation of the butt-jointed tube, and the second spring is squeezed at this time, that is, after the butt-jointed tube is installed, the second spring is always in a compressed state, and then during the disassembly process, the second spring pushes the movable plate, so that the movable plate pushes the lap plate, and at this time the second spring and the movable plate play a role of assisting the disassembly, making it convenient for the staff to quickly remove the butt-jointed tube.

[0020] The easy-to-assemble shell-and-tube heat exchanger allows the motor to work intermittently during the working process of the heat exchanger shell and the butt tube. When the motor rotates, the motor drives the slide plate to make reciprocating linear motion inside the upper connecting plate through the bidirectional threaded rod and the long pin. At this time, the slide plate drives the brush plate to move synchronously, so that the brush plate can clean the surface of the heat exchanger shell to prevent dust from sticking, thereby avoiding the generation of scale and ensuring the heat conduction efficiency of the heat exchanger shell.

[0021] Furthermore, after the brush plate has been used for a long time, it is necessary to clean the brush plate. At this time, the plug plate can be directly pulled out from the inside of the skateboard. After cleaning the brush plate, the plug plate can be inserted into the skateboard again. The replacement process is simple and the working efficiency of the brush plate is guaranteed.

[0022] In the shell-and-tube heat exchanger which is easy to assemble, during the movement of the slide plate, the first magnet will intermittently approach the second magnet. At this time, the force-bearing plate, the column and the pressure plate will make reciprocating linear motion in the vertical direction under the action of the mutual magnetic force and the thrust of the airbag expansion, and then the airbag will be intermittently squeezed, that is, the airbag will be intermittently blown through the nozzle, and the nozzle and the brush plate will cooperate to make impurities and dust be better cleaned, thereby improving the efficiency.

[0023] Furthermore, when the airbag, the air inlet pipe and the air outlet pipe are working, the one-way valve makes the airflow flow from the air inlet pipe to the nozzle, and the one-way valve ensures the normal operation of the airbag and the nozzle.

[0024] Furthermore, during the movement of the brush plate, the lower connecting block on the lower surface of the brush plate will intermittently contact the upper connecting block on the upper surface of the inner plate, and then the brush plate will slide inside the plug plate under the thrust between the lower connecting block and the upper connecting block, the inner block and the inner rod. At this time, the brush plate can better clean the surface of the heat exchanger shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the connection structure between the heat exchanger housing and the butt-joint pipe of the present invention; Figure 2 It is a schematic diagram of the connection structure between the heat exchanger housing and the fixing plate of the present invention; Figure 3 This is a schematic diagram of the connection structure of the butt-joint pipe and the positioning plate of the present invention; Figure 4 This is a schematic diagram of the structure of the outer plate distribution state of the present invention; Figure 5 This is a schematic diagram of the structure of the outer plate in a cut-away state of the present invention; Figure 6 For the present invention Figure 5 The enlarged structural diagram at A in the middle; Figure 7 This is a schematic diagram of the connection structure between the upper connecting plate and the motor of the present invention; Figure 8 It is a schematic diagram of the connection structure between the slide plate and the first magnet of the present invention; Fig. 9 This is a schematic diagram of the distribution structure of the nozzles of the present invention; Fig.10 This is a schematic diagram of the connection structure between the inner plate and the upper connecting block of the present invention; Fig.11 It is a schematic diagram of the cross-section structure of the plug board of the present invention.

[0026] In the figure: 1. heat exchanger shell; 2. butt tube; 3. fixing plate; 4. lap plate; 5. positioning plate; 6. outer plate; 7. limit block; 8. working rod; 9. first spring; 10. guide rod; 11. cross bar; 12. movable plate; 13. second spring; 14. upper connecting plate; 15. motor; 16. two-way threaded rod; 17. long pin; 18. slide plate; 19. brush plate; 20. plug plate; 21. first magnet; 22. force plate; 23. second magnet; 24. pressure plate; 25. air bag; 26. column; 27. air inlet pipe; 28. air outlet pipe; 29. ​​nozzle; 30. one-way valve; 31. inner plate; 32. upper connecting block; 33. lower connecting block; 34. inner block; 35. inner rod. DETAILED DESCRIPTION

[0027] 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.

[0028] The present invention provides the following technical solution: a shell and tube heat exchanger that is easy to assemble, such as Figure 1-Figure 9 As shown, it includes a heat exchanger shell 1 and a butt tube 2, a snap-fit ​​assembly is arranged between the heat exchanger shell 1 and the butt tube 2, and the heat exchanger shell 1 and the butt tube 2 are connected through the snap-fit ​​assembly, and an upper connecting plate 14 is fixedly connected to the upper surface of the heat exchanger shell 1, and the snap-fit ​​assembly includes a fixing plate 3 fixedly connected to the surface of the heat exchanger shell 1, and the snap-fit ​​assembly also includes a lap plate 4 fixedly connected to the outer surface of the butt tube 2, and the diameter of the butt tube 2 is smaller than the diameter of the heat exchanger shell 1, and an outer plate 6 is fixedly connected to the surface of the fixing plate 3.

[0029] Limit blocks 7 are slidably provided on the upper and lower sides of the outer panel 6, and the surface of the limit blocks 7 is inclined, and the outer panels 6 are symmetrically distributed on the front and rear sides of the fixed plate 3, a positioning plate 5 is fixedly connected to the outer wall of the butt tube 2, a guide rod 10 is fixedly connected to the inner wall of the outer panel 6, and the end of the guide rod 10 is movably provided inside the limit blocks 7, a first spring 9 which plays an elastic reset role is fixedly connected to the surface of the limit blocks 7, and the other side of the first spring 9 is fixedly connected to the inner wall of the outer panel 6.

[0030] When it is necessary to install the butt-joint pipe 2 on the heat exchanger shell 1, align the lap plate 4 with the outer plate 6 and the cross bar 11, and insert the butt-joint pipe 2 into the heat exchanger shell 1. At this time, the limit block 7 will be pushed by the lap plate 4 and move in the direction of squeezing the first spring 9 (the guide rod 10 makes the limit block 7 move only in the vertical direction). After the positioning plate 5 contacts the heat exchanger shell 1, the limit block 7 pops out under the action of the first spring 9. At this time, the butt-joint pipe 2 is stuck on the heat exchanger shell 1 under the action of the positioning plate 5 and the limit block 7. The operation process is quick and convenient. After long-term use, when it is necessary to remove the butt-joint pipe 2, the working rod 8 can be pressed to drive the working rod 8 to move the limit block 7 to the inside of the outer plate 6. When the end of the limit block 7 completely enters the outer plate 6, the butt-joint pipe 2 and the lap plate 4 can be removed. The operation steps of the disassembly process are simple and the work efficiency is high. At the same time, the diameter of the butt-joint pipe 2 is smaller than the diameter of the heat exchanger shell 1, ensuring that no leakage occurs when the internal material flows.

[0031] At the same time, the movable plate 12 and the second spring 13 are set up to assist disassembly. The surface of the limit block 7 is fixedly connected with the working rod 8, and the front view of the working rod 8 is an inverted "L" structure, and the end of the working rod 8 is located on the outside of the outer plate 6. The surface of the fixed plate 3 is fixedly connected with the cross bar 11, and the cross bar 11 is symmetrically distributed on the upper and lower sides of the fixed plate 3, and the surface of the cross bar 11 is sleeved with the movable plate 12, and the surface of the movable plate 12 is fixedly connected with the second spring 13 which plays an elastic reset role, and the other side of the second spring 13 is fixedly connected to the surface of the fixed plate 3.

[0032] During the installation of the butt-jointed pipe 2, the movable plate 12 will slide on the surface of the cross bar 11, and the second spring 13 will be squeezed at this time, that is, after the butt-jointed pipe 2 is installed, the second spring 13 is always in a compressed state, and then during the disassembly process, the second spring 13 will push the movable plate 12, so that the movable plate 12 pushes the lap plate 4. At this time, the second spring 13 and the movable plate 12 play a role of auxiliary disassembly, which is convenient for the staff to quickly remove the butt-jointed pipe 2, and the butt-jointed pipe 2 and the heat exchanger housing 1 will not be inconvenient to remove due to dust adhesion due to long-term use.

[0033] In addition, through the provided cleaning assembly, the brush plate 19 can clean the outer wall of the heat exchanger housing 1, and a slide plate 18 is slidably provided inside the upper connecting plate 14; a cleaning assembly is provided on the surface of the slide plate 18, and the cleaning assembly includes a brush plate 19 inserted and connected inside the slide plate 18. When the cleaning assembly is working, the dust is swept away from the heat exchanger housing 1. The front view of the upper connecting plate 14 is an inverted "U" shape. The cleaning assembly also includes a long pin 17 fixedly connected to the inner wall of the upper connecting plate 14, and the left outer surface of the upper connecting plate 14 is bolted to the motor 15, and the output end of the motor 15 is fixedly connected to the bidirectional threaded rod 16, and the surface of the bidirectional threaded rod 16 is bolted to the slide plate 18, and the upper surface of the brush plate 19 is movably connected to the plug plate 20, and the plug plate 20 is plugged and connected to the inside of the slide plate 18.

[0034] During the working process of the heat exchanger housing 1 and the butt pipe 2, the motor 15 works intermittently. When the motor 15 rotates, the motor 15 drives the slide plate 18 to make reciprocating linear motion inside the upper connecting plate 14 through the bidirectional threaded rod 16 and the long pin 17. At this time, the slide plate 18 drives the brush plate 19 to move synchronously, so that the brush plate 19 can clean the surface of the heat exchanger housing 1 to prevent dust from adhering, thereby avoiding the generation of scale. After the brush plate 19 has been used for a long time, it is necessary to clean the brush plate 19. At this time, the plug plate 20 can be directly pulled out from the inside of the slide plate 18. After cleaning the brush plate 19, the plug plate 20 can be inserted into the inside of the slide plate 18. The replacement process is simple, which ensures the working efficiency of the brush plate 19. In addition, during the movement of the brush plate 19, the lower connecting block 33 on the lower surface of the brush plate 19 will intermittently contact the upper connecting block 32 on the upper surface of the inner plate 31. When the lower connecting block 33 also contacts the upper connecting block 32, the brush plate 19 is pushed to rotate (the inner block 34 and the inner rod 35 ensure the stability of the rotation of the brush plate 19, and the brush plate 19 will not fall off). When the lower connecting block 33 and the upper connecting block 32 are not in contact, the brush plate 19 rotates under the action of its own gravity, and then the brush plate 19 slides back and forth inside the plug plate 20. At this time, the brush plate 19 can better clean the surface of the heat exchanger shell 1.

[0035] A cleaning assembly is also provided, which can blow air to the surface of the heat exchanger housing 1 through a nozzle 29 to facilitate rapid cleaning of dust. A cleaning assembly is provided between the slide plate 18 and the upper connecting plate 14, and the cleaning assembly includes an air bag 25 bonded to the upper surface of the upper connecting plate 14, and a nozzle 29 is provided on the surface of the air bag 25. When the cleaning assembly is working, the dust is blown away from the heat exchanger housing 1. The cleaning assembly also includes a column 26 slidably provided inside the upper connecting plate 14, and the lower surface of the column 26 is fixedly connected to the force plate 22, and the lower surface of the force plate 22 is fixedly connected to the second magnet 23, and the upper surface of the slide plate 18 is fixedly connected to the It is connected to a first magnet 21, and the magnetic poles on the upper surface of the first magnet 21 are opposite to the magnetic poles on the lower surface of the second magnet 23, and the second magnets 23 are evenly spaced on the lower surface of the force-bearing plate 22. The upper end of the column 26 is fixedly connected to a pressure plate 24, and the lower surface of the pressure plate 24 fits with the upper surface of the airbag 25, and the left and right sides of the airbag 25 are fixedly connected to an air inlet pipe 27, the front and rear side surfaces of the airbag 25 are fixedly connected to an air outlet pipe 28, and the end of the air outlet pipe 28 is fixedly connected to a nozzle 29, and the nozzle 29 is arranged vertically downward, and the surfaces of the air outlet pipe 28 and the air inlet pipe 27 are fixedly connected to a one-way valve 30.

[0036] During the movement of the slide plate 18, the first magnet 21 will intermittently approach the second magnet 23. When the first magnet 21 approaches the second magnet 23, the force plate 22 descends under the action of the mutual magnetic force. At this time, the force plate 22 drives the pressure plate 24 to descend synchronously through the column 26. At this time, the airbag 25 is squeezed by the pressure plate 24, and when the first magnet 21 is away from the second magnet 23, the airbag 25 expands. At this time, the airbag 25 pushes the pressure plate 24 and the force plate 22 to rise, and the above process is repeated. At this time, the force plate 22, the column 26 and the pressure plate 24 make reciprocating linear motion in the vertical direction under the action of the mutual magnetic force and the expansion thrust of the airbag 25, and then the airbag 25 will be intermittently Extrusion, when the airbag 25 is squeezed, air is blown through the air outlet pipe 28 and the nozzle 29. When the airbag 25 expands, the airbag 25 takes in air through the air inlet pipe 27. When the nozzle 29 blows air, it plays a role in blowing away the dust. Furthermore, during operation, after the brush plate 19 sweeps the dust down, the nozzle 29 can directly blow the dust away, that is, with the cooperation of the brush plate 19 and the nozzle 29, impurities and dust can be better cleaned, thereby improving efficiency. In addition, when the airbag 25, the air inlet pipe 27 and the air outlet pipe 28 are working, the one-way valve 30 makes the airflow direction from the air inlet pipe 27 to the nozzle 29, and the one-way valve 30 ensures the normal operation of the airbag 25 and the nozzle 29.

[0037] The above is the working process of the entire device, and the contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

Claims

1. A shell-and-tube heat exchanger that is easy to assemble, comprising a heat exchanger shell (1) and a butt-jointed tube (2), wherein a snap-fit ​​assembly is provided between the heat exchanger shell (1) and the butt-jointed tube (2), and the heat exchanger shell (1) and the butt-jointed tube (2) are connected via the snap-fit ​​assembly, and an upper connecting plate (14) is fixedly connected to the upper surface of the heat exchanger shell (1), and the snap-fit ​​assembly comprises a fixing plate (3) fixedly connected to the surface of the heat exchanger shell (1); Features: A slide plate (18) is slidably arranged inside the upper connecting plate (14); A cleaning component is provided on the surface of the slide plate (18), the cleaning component comprising a brush plate (19) inserted and connected to the inside of the slide plate (18), and when the cleaning component is in operation, dust is swept away from the heat exchanger housing (1); A cleaning component is provided between the slide plate (18) and the upper connecting plate (14), and the cleaning component comprises an air bag (25) bonded to the upper surface of the upper connecting plate (14), and a nozzle (29) is provided on the surface of the air bag (25). When the cleaning component is in operation, dust is blown away from the heat exchanger housing (1).

2. The easy-to-assemble shell-and-tube heat exchanger according to claim 1, characterized in that: The snap-fit ​​assembly further comprises a lap plate (4) fixedly connected to the outer surface of the butt-jointed tube (2), the diameter of the butt-jointed tube (2) being smaller than the diameter of the heat exchanger housing (1), and an outer plate (6) being fixedly connected to the surface of the fixed plate (3).

3. The easy-to-assemble shell-and-tube heat exchanger according to claim 2, characterized in that: Limit blocks (7) are slidably provided on both upper and lower sides of the outer plate (6), and the surfaces of the limit blocks (7) are inclined, and the outer plates (6) are symmetrically distributed on the front and rear sides of the fixed plate (3).

4. The easy-to-assemble shell-and-tube heat exchanger according to claim 3 is characterized in that: A positioning plate (5) is fixedly connected to the outer wall of the butt joint pipe (2), a guide rod (10) is fixedly connected to the inner wall of the outer plate (6), and the end of the guide rod (10) is movably arranged inside the limit block (7).

5. The shell-and-tube heat exchanger that is easy to assemble according to claim 3, characterized in that: A first spring (9) having an elastic reset function is fixedly connected to the surface of the limit block (7), and the other side of the first spring (9) is fixedly connected to the inner wall of the outer plate (6).

6. The easy-to-assemble shell-and-tube heat exchanger according to claim 3, characterized in that: The surface of the limit block (7) is fixedly connected to a working rod (8), and the working rod (8) is an inverted "L" structure when viewed from the front, and the end of the working rod (8) is located on the outside of the outer plate (6), the surface of the fixed plate (3) is fixedly connected to a cross bar (11), and the cross bars (11) are symmetrically distributed on the upper and lower sides of the fixed plate (3), and the surface of the cross bar (11) is sleeved and connected to a movable plate (12), and the surface of the movable plate (12) is fixedly connected to a second spring (13) that plays an elastic reset role, and the other side of the second spring (13) is fixedly connected to the surface of the fixed plate (3).

7. The easy-to-assemble shell-and-tube heat exchanger according to claim 1, characterized in that: The upper connecting plate (14) is in an inverted "U" shape when viewed from the front, and the cleaning assembly further comprises a long pin (17) fixedly connected to the inner wall of the upper connecting plate (14), and a motor (15) is bolted to the left outer surface of the upper connecting plate (14), and a bidirectional threaded rod (16) is fixedly connected to the output end of the motor (15).

8. The easy-to-assemble shell-and-tube heat exchanger according to claim 7, characterized in that: The surface of the bidirectional threaded rod (16) is bolted to the slide plate (18), the upper surface of the brush plate (19) is movably connected to a plug plate (20), and the plug plate (20) is plugged and connected inside the slide plate (18).

9. The easy-to-assemble shell-and-tube heat exchanger according to claim 1, characterized in that: The cleaning component further comprises a column (26) slidably arranged inside the upper connecting plate (14), and the lower surface of the column (26) is fixedly connected to a force-bearing plate (22), and the lower surface of the force-bearing plate (22) is fixedly connected to a second magnet (23), the upper surface of the slide plate (18) is fixedly connected to a first magnet (21), and the magnetic poles of the upper surface of the first magnet (21) are opposite to the magnetic poles of the lower surface of the second magnet (23), and the second magnets (23) are evenly spaced on the lower surface of the force-bearing plate (22). The upper end of the column (26) is fixedly connected to a pressure plate (24), and the lower surface of the pressure plate (24) is in contact with the upper surface of the airbag (25), and the left and right sides of the airbag (25) are fixedly connected to an air inlet pipe (27), and the front and rear surfaces of the airbag (25) are fixedly connected to an air outlet pipe (28), and the end of the air outlet pipe (28) is fixedly connected to a nozzle (29), and the nozzle (29) is arranged vertically downward, and the surfaces of the air outlet pipe (28) and the air inlet pipe (27) are fixedly connected to a one-way valve (30).

10. The easy-to-assemble shell-and-tube heat exchanger according to claim 8, characterized in that: The lower surface of the heat exchanger shell (1) is fixedly connected to a bracket, and an inner plate (31) is fixedly connected between adjacent brackets, and the upper surface of the inner plate (31) is fixedly connected to an upper connecting block (32) at equal intervals, the upper surface of the brush plate (19) is fixedly connected to an inner block (34), and the lower surface of the brush plate (19) is fixedly connected to a lower connecting block (33), and the surface of the lower connecting block (33) and the surface of the upper connecting block (32) are both inclined, and an inner rod (35) is fixedly connected to the inner wall of the plug plate (20), and the inner rod (35) passes through the interior of the inner block (34).

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