A waste heat recovery system in the toner production field

Abstract

The application discloses a waste heat recovery system in the field of toner production, and belongs to the technical field of waste heat recovery. The technical scheme points of the waste heat recovery system are as follows: the waste heat recovery system comprises a heat exchange box and a heat exchange device, input pipes and output pipes are connected to the two sides of the heat exchange box respectively, and a plurality of insertion holes are formed in the top of the heat exchange box; the heat exchange device comprises a mounting plate, heat exchange pipes, a water feeding structure and a water outlet structure, the heat exchange pipes are provided in plurality and are all connected with the mounting plate, the heat exchange pipes are selectively inserted into the corresponding insertion holes, the inner walls of the heat exchange pipes are connected with isolation plates, the isolation plates separate the heat exchange pipes into first spaces and second spaces, channels are formed in the isolation plates and are connected between the first spaces and the second spaces, the water feeding structure and the water outlet structure are both connected with the mounting plate, the water feeding structure is used for being connected with the first spaces, the water outlet structure is used for being connected with the second spaces, and when the heat exchange pipes are inserted into the heat exchange box, the mounting plate abuts against the heat exchange box, so that the waste heat in the field of toner production can be effectively recovered, and the waste heat recovery efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of waste heat recovery technology, and in particular to a waste heat recovery system for toner production. Background Technology

[0002] In the industrial production sector, efficient energy utilization has always been a key element for industry development. With increasing global emphasis on energy conservation and emission reduction, various industries are actively exploring ways to reduce energy consumption and improve energy efficiency. In the toner production industry, a significant amount of waste heat is generated during production. Effectively recovering and utilizing this waste heat can not only reduce production costs for enterprises but also reduce thermal pollution to the environment, aligning with the requirements of green and sustainable development. As the scale of toner production continues to expand, the demand for waste heat recovery systems is also growing. Efficient waste heat recovery technology is of great significance for enhancing the competitiveness of the entire toner production industry.

[0003] In the field of toner production, the common technical means for waste heat recovery from high-temperature flue gas is to use a traditional heat exchanger. By exchanging heat between the waste heat and the coolant, the waste heat is transferred to the coolant, and then the heat in the coolant is used in other production processes.

[0004] However, traditional heat exchangers tend to experience a gradual decrease in heat exchange efficiency after prolonged operation. This is because impurities easily adhere to the surface of heat exchange components during waste heat transfer, hindering effective heat transfer and thus affecting the performance of the entire waste heat recovery system. Summary of the Invention

[0005] In order to effectively recover waste heat in the toner production field and improve the waste heat recovery efficiency, this invention provides a waste heat recovery system for the toner production field.

[0006] The waste heat recovery system for toner production provided by this invention adopts the following technical solution:

[0007] A waste heat recovery system for toner production includes a heat exchange box and a heat exchange device. The heat exchange box has an input pipe and an output pipe connected to its two sides, and multiple insertion holes are provided on its top. The heat exchange device includes a mounting plate, heat exchange tubes, a water supply structure, and a water outlet structure. Multiple heat exchange tubes are provided and connected to the mounting plate. Each heat exchange tube can be selectively inserted into a corresponding insertion hole. An isolation plate is connected to the inner wall of each heat exchange tube, dividing the heat exchange tube into a first space and a second space. A channel connecting the first space and the second space is provided on the isolation plate. Both the water supply structure and the water outlet structure are connected to the mounting plate. The water supply structure communicates with the first space, and the water outlet structure communicates with the second space. When the heat exchange tubes are inserted into the heat exchange box, the mounting plate abuts against the heat exchange box.

[0008] By adopting the above technical solution, the input and output pipes on both sides of the heat exchange box realize the input and output of flue gas, and the insertion hole on the top of the heat exchange box facilitates the insertion of heat exchange tubes. The isolation plate and channels inside the heat exchange tubes allow water to flow in the first and second spaces for sufficient heat exchange. The water supply and outlet structures realize the input and output of water. The mounting plate abutting against the heat exchange box ensures the stability of the heat exchange tube installation, thereby achieving effective recovery of waste heat in the toner production field. Furthermore, when it is necessary to replace the heat exchange device, the heat exchange tubes can be pulled out of the insertion hole, separating the mounting plate from the heat exchange box. Then, another set of heat exchange devices can be replaced, and the new heat exchange tubes can be inserted into the insertion hole, allowing the mounting plate to abut against the heat exchange box, thus completing the replacement of the heat exchange device and improving heat exchange efficiency.

[0009] Preferably, the heat exchange tubes are divided into a first group and a second group. Multiple heat exchange tubes in the first group are distributed at intervals along a first direction, and multiple heat exchange tubes in the second group are distributed at intervals along the first direction. The heat exchange tubes in the first group and the second group are arranged alternately along a second direction, and the heat exchange tubes in the first group and the heat exchange tubes in the second group are staggered.

[0010] By adopting the above technical solution, grouping the heat exchange tubes and distributing them in a specific manner, the contact area and time between the heat exchange tubes and the waste heat in the heat exchange box can be increased, thereby improving the waste heat recovery efficiency.

[0011] Preferably, the heat exchange box has multiple sealing cavities, which are connected to the insertion hole. Each sealing cavity has a sealing structure, which includes a first sealing half-ring, a second sealing half-ring, and a tightening sleeve. The first sealing half-ring is slidably connected to the side wall of the sealing cavity away from the outside, and the second sealing half-ring is slidably connected to the side wall of the sealing cavity away from the outside. The heat exchange tube passes between the first sealing half-ring and the second sealing half-ring. The tightening sleeve is fitted on the heat exchange tube, and the inner diameter of the tightening sleeve gradually decreases from one end to the other. When the tightening sleeve is fitted on the first sealing half-ring and the second sealing half-ring, the first sealing half-ring and the second sealing half-ring form a sealing ring and abut against the outer wall of the heat exchange tube, thereby isolating the interior of the heat exchange box from the outside.

[0012] By adopting the above technical solution, when the heat exchange tube is inserted into the socket during use, that is, when the heat exchange tube passes between the first sealing half ring and the second sealing half ring, the tightening sleeve is also fitted on the heat exchange tube. Since the inner diameter of the tightening sleeve gradually decreases from one end to the other end, when the tightening sleeve is fitted on the first sealing half ring and the second sealing half ring, the first sealing half ring and the second sealing half ring form a sealing ring and abut against the outer wall of the heat exchange tube, thereby isolating the inside of the heat exchange box from the outside, effectively preventing heat loss and the entry of external impurities, and improving the waste heat recovery efficiency.

[0013] Preferably, the heat exchange box is connected to a movable cavity, and all the sealed cavities are in communication with the movable cavity. The heat exchange box is connected to a control device, which includes a cylinder, a drive rod, a control rod, and a first actuating rod. The cylinder is connected to the heat exchange box, and the drive rod is connected to the cylinder. Multiple control rods are provided. One end of each control rod is connected to the drive rod, and the other end passes through the heat exchange box and extends into the movable cavity. Each group of heat exchange tubes corresponds to one control rod, and each control rod is hinged to multiple first actuating rods. The end of the first actuating rod away from the control rod is hinged to the tightening sleeve.

[0014] By adopting the above technical solution, a movable cavity is set to connect the sealing cavity with it, and the cylinder of the control device drives the drive rod to move the control rod in the movable cavity. Then, the first action rod controls the tightening sleeve, so that the first sealing half ring and the second sealing half ring form a sealing ring and abut against the outer wall of the heat exchange tube, realizing the isolation between the inside of the heat exchange box and the outside. This facilitates the control of the sealing structure and improves the sealing performance and ease of use of the waste heat recovery system.

[0015] Preferably, the control device further includes a lever, a synchronizing rod, and a second actuating rod. The lever and the synchronizing rod are both located within the movable cavity. The control rod, the lever, and the synchronizing rod form a control group. Each heat exchange tube group corresponds to one control group. The middle part of the lever is rotatably connected to the heat exchange box via a rotating shaft. The two ends of the lever are respectively provided with a first sliding hole and a second sliding hole. A first slider is provided in the first sliding hole and slidably connected to the lever. The first slider is connected to the control rod. A second slider is provided in the second sliding hole and slidably connected to the lever. The second slider is connected to the synchronizing rod. Each synchronizing rod is hinged with multiple second actuating rods. The end of the second actuating rod away from the synchronizing rod is hinged to the tightening sleeve.

[0016] By adopting the above technical solution, when the control rod is activated, the first slider on the control rod slides in the first sliding hole of the lever, causing the lever to rotate around the pivot. This, in turn, causes the second slider in the second sliding hole of the lever to drive the synchronizing rod to move. The synchronizing rod drives the tightening sleeve to move through multiple second action rods, thereby achieving synchronous control of the sealing structure corresponding to each set of heat exchange tubes. This improves the synchronicity and stability of the sealing structure control, and achieves reliable isolation between the inside of the heat exchange box and the outside world, facilitating better waste heat recovery.

[0017] Preferably, it also includes a fixing device. The heat exchange box has a groove structure. The mounting plate has a limiting cavity and a through hole. The through hole connects to the outside and the limiting cavity. The through hole is correspondingly arranged with the groove structure. The bottom end of the fixing device is located in the groove structure. When the top end of the fixing device extends through the through hole to the limiting cavity, it is used to fix the mounting plate to the heat exchange box.

[0018] By adopting the above technical solution, when in use, the bottom end of the fixing device is placed inside the groove structure, and the top end of the fixing device extends through the through hole corresponding to the groove structure into the limiting cavity of the mounting plate, which can realize the fixing of the mounting plate and the heat exchange box and ensure the stability of the waste heat recovery system structure.

[0019] Preferably, the fixing device includes a driving block, a moving rod, a limiting plate, a first fixing rod, a second fixing rod, a return spring, and a top block. The driving block is connected to the driving rod and can be selectively inserted into the slot structure. The top end of the moving rod is connected to the limiting plate, and the limiting plate is slidably connected to the heat exchange box. The first end of the first fixing rod and the first end of the second fixing rod are both rotatably connected to the limiting plate. The return spring is located between the first fixing rod and the second fixing rod, with one end connected to the second end of the first fixing rod and the other end connected to the second end of the second fixing rod. The top block is located in the limiting cavity and connected to the mounting plate. When the driving block abuts against the driving rod, the first fixing rod and the second fixing rod extend into the limiting cavity, and the top block is inserted between the first fixing rod and the second fixing rod. The top block abuts against both the first fixing rod and the second fixing rod, thereby engaging both the first fixing rod and the second fixing rod with the mounting plate.

[0020] By adopting the above technical solution, during use, the drive rod drives the drive block to move. The drive block can be selectively inserted into the slot structure. When the drive block abuts against the drive rod, it pushes the moving rod and the limiting plate to move, so that the first fixed rod and the second fixed rod extend into the limiting cavity. The top block is inserted between the first fixed rod and the second fixed rod and abuts against them. At this time, the reset spring is stretched, and the first fixed rod and the second fixed rod open and engage with the mounting plate, thereby fixing the mounting plate to the heat exchange box, ensuring the stability of the waste heat recovery system structure, and facilitating the stable operation of the system for waste heat recovery.

[0021] Preferably, the input pipe includes an input section and a diffuser section, the input section and the diffuser section are integrally formed, the diffuser section is connected to the heat exchange box, and the inner diameter of the diffuser section gradually increases from one end near the input section to the other end.

[0022] By adopting the above technical solution, the inlet and diffuser parts of the inlet pipe are integrally formed, and the inner diameter of the diffuser part gradually increases, so that the hot gas entering the heat exchange box can diffuse more evenly, thereby increasing the contact area with the heat exchange tube and the heat exchange efficiency.

[0023] Preferably, the output pipe includes an output section and a collection section, the collection section is connected to the heat exchange box, the output section and the collection section are integrally formed, and the inner diameter of the collection section gradually decreases from one end away from the output section to the other end.

[0024] By adopting the above technical solution, the inner diameter of the collection section of the output pipe is gradually reduced, which facilitates the collection of the fluid after heat exchange in the heat exchange box, allowing the fluid to flow more smoothly to the output section and improving the overall operating efficiency of the waste heat recovery system.

[0025] Preferably, a drain pipe is connected to the bottom of the heat exchange box.

[0026] By adopting the above technical solution, a drain pipe is installed at the bottom of the heat exchange box to drain any water that may accumulate inside the heat exchange box, thus preventing water accumulation from affecting the normal operation of the waste heat recovery system.

[0027] In summary, the present invention has the following beneficial effects:

[0028] The heat exchanger utilizes inlet and outlet pipes on both sides to control the input and output of flue gas. An insertion hole on the top of the heat exchanger facilitates the insertion of heat exchange tubes. The isolation plates and channels within the heat exchange tubes allow water to flow between the first and second spaces for thorough heat exchange. Water supply and outlet structures control water input and output. The mounting plate abuts against the heat exchanger to ensure the stability of the heat exchange tube installation, thus achieving effective recovery of waste heat in toner production. Furthermore, when replacing the heat exchanger, the heat exchange tubes can be pulled out of the insertion hole, separating the mounting plate from the heat exchanger. Then, another set of heat exchangers can be installed, and the new heat exchange tubes can be inserted into the insertion hole, allowing the mounting plate to abut against the heat exchanger, thus completing the heat exchanger replacement and improving heat exchange efficiency. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of a waste heat recovery system in the toner production field.

[0030] Figure 2 This is a schematic diagram of the heat exchange device.

[0031] Figure 3 This is a schematic diagram of the water supply and outlet structures.

[0032] Figure 4 This is a schematic diagram of the interior of the heat exchanger.

[0033] Figure 5 yes Figure 4 An enlarged schematic diagram of part A in the middle.

[0034] Figure 6 This is a schematic diagram showing the location of the control device and heat exchange tubes.

[0035] Figure 7 This is a schematic diagram of the sealing structure.

[0036] Figure 8 Schematic diagram showing the positions of the fixed device and the heat exchange box.

[0037] Figure 9 This is a structural diagram of the fixing device.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Heat exchange box; 11. Insertion hole; 12. Sealed cavity; 13. Movable cavity; 14. First slide groove; 15. Second slide groove; 16. Groove structure; 2. Inlet pipe; 3. Outlet pipe; 4. Drain pipe; 5. Heat exchange device; 51. Mounting plate; 511. Limiting cavity; 512. Through hole; 52. Heat exchange tube; 521. Isolation plate; 522. First space; 523. Second space; 53. Water supply structure; 531. Water supply pipe; 532. First branch pipe; 533. Second branch pipe; 54. Water outlet structure; 541. Water outlet pipe; 542. Third branch pipe; 543. Fourth branch pipe; 5431. Water passage hole 6. Sealing structure; 61. First sealing half-ring; 611. First block; 62. Second sealing half-ring; 621. Second block; 63. Tightening sleeve; 7. Control device; 71. Cylinder; 72. Drive rod; 73. Control rod; 74. First actuating rod; 75. Lever; 751. First sliding hole; 752. First slider; 753. Second sliding hole; 754. Second slider; 76. Synchronizing rod; 77. Second actuating rod; 8. Fixing device; 81. Drive block; 82. Moving rod; 83. Limiting plate; 84. First fixing rod; 85. Second fixing rod; 86. Return spring; 87. Top block. Detailed Implementation

[0040] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0041] In the description of the embodiments of this application, the words "for example" or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design that is described as "for example" or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design options. Rather, the use of the words "for example" or "for instance" is intended to present the relevant concepts in a specific manner.

[0042] In the description of the embodiments of this application, the term "multiple" means two or more. For example, multiple systems means two or more systems, and multiple screen terminals means two or more screen terminals. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. The terms "comprising," "including," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0043] A waste heat recovery system for toner production, referring to Figure 1 and Figure 2 The system includes a heat exchange box 1 and a heat exchange device 5. An inlet pipe 2 and an outlet pipe 3 are connected to both sides of the heat exchange box 1. The heat exchange device 5 includes a mounting plate 51, heat exchange tubes 52, a water supply structure 53, and a water outlet structure 54. Multiple insertion holes 11 are provided on the top of the heat exchange box 1. Multiple heat exchange tubes 52 are provided, all of which are connected to the mounting plate 51. The heat exchange tubes 52 can be selectively inserted into the corresponding insertion holes 11.

[0044] Reference Figure 3 and Figure 4 The inner wall of the heat exchange tube 52 is connected to an isolation plate 521, which divides the heat exchange tube 52 into a first space 522 and a second space 523. The isolation plate 521 has a channel connecting the first space 522 and the second space 523. The water supply structure 53 and the water outlet structure 54 are both connected to the mounting plate 51. The water supply structure 53 is used to communicate with the first space 522, and the water outlet structure 54 is used to communicate with the second space 523. When the heat exchange tube 52 is inserted into the heat exchange box 1, the mounting plate 51 abuts against the heat exchange box 1.

[0045] Through this combination, the high-temperature flue gas enters the heat exchange box 1 from the inlet pipe 2 and exchanges heat with the coolant in the heat exchange tube 52, transferring the waste heat to the coolant. The coolant enters the heat exchange tube 52 from the water supply structure 53 and flows out from the water outlet structure 54 after heat exchange, realizing the recovery and utilization of waste heat and improving the performance of the waste heat recovery system.

[0046] Reference Figure 2 The input pipe 2 is used to input high-temperature flue gas. The input pipe 2 includes an input section and a diffuser section. The input section and the diffuser section are integrally formed. The diffuser section is fixedly connected to the heat exchange box 1. The inner diameter of the diffuser section gradually increases from one end near the input section to the other end. This structure can make the high-temperature flue gas enter the heat exchange box 1 more evenly and improve the heat exchange efficiency.

[0047] Reference Figure 2The output pipe 3 is used to output the flue gas after heat exchange. The output pipe 3 includes an output section and a collection section. The collection section is connected to the heat exchange box 1. The output section and the collection section are integrally formed. The inner diameter of the collection section gradually decreases from one end away from the output section to the other end, so that the flue gas after heat exchange can be better collected and discharged.

[0048] Reference Figure 2 The bottom of the heat exchange box 1 is connected to a drain pipe 4, which is used to drain the condensate generated during the heat exchange process.

[0049] Reference Figure 2 The heat exchange tubes 52 are divided into multiple first groups and multiple second groups, with the first and second groups of heat exchange tubes 52 arranged alternately along a second direction. Multiple heat exchange tubes 52 in the first group are spaced apart along a first direction, and multiple heat exchange tubes 52 in the second group are also spaced apart along the first direction, with the heat exchange tubes 52 in the first group and the heat exchange tubes 52 in the second group being staggered. This arrangement increases the contact area between the high-temperature flue gas and the heat exchange tubes 52, thereby improving heat exchange efficiency.

[0050] The first direction is perpendicular to the direction of flue gas flow, and the second direction can be the direction of flue gas flow.

[0051] Reference Figure 3 The water supply structure 53 includes a water supply pipe 531, a first branch pipe 532, and a second branch pipe 533. The water supply pipe 531 is used to connect to a water source. Multiple first branch pipes 532 are provided, and each is connected to the water supply pipe 531. Multiple second branch pipes 533 are provided, and each heat exchange pipe 52 is provided with one second branch pipe 533. The first space 522 is connected to the second branch pipe 533.

[0052] Reference Figure 3 The water outlet structure 54 includes a water supply pipe 531, a third branch pipe 542, and a fourth branch pipe 543. The water supply pipe 531 is used to connect to the hot water storage area. Multiple third branch pipes 542 are provided, and each is connected to the water outlet pipe 541. Multiple fourth branch pipes 543 are provided, and each heat exchange tube 52 is provided with one fourth branch pipe 543. The second space 523 is connected to the fourth branch pipes 543.

[0053] Reference Figure 4 and Figure 5 The end of the fourth branch pipe 543 away from the third branch pipe 542 is close to the bottom of the heat exchange pipe 52, and the fourth branch pipe 543 is provided with a plurality of water passage holes 5431, which are spaced apart along the length of the fourth branch pipe 543.

[0054] Reference Figure 4 and Figure 5 The heat exchange box 1 has a sealing cavity 12. There are multiple sealing cavities 12. Each sealing cavity 12 corresponds to a socket 11 and the sealing cavity 12 is connected to the socket 11.

[0055] Reference Figure 5 , Figure 6 and Figure 7 Each sealing cavity 12 is equipped with a sealing structure 6, which includes a first sealing half-ring 61, a second sealing half-ring 62, and a tightening sleeve 63. A first sliding groove 14 and a second sliding groove 15 are formed on the side wall of the sealing cavity 12 away from the outside. The first sealing half-ring 61 is fixedly connected to a first block 611, which is located within the first sliding groove 14 and slidably connected to the heat exchange box 1. The second sealing half-ring 62 is fixedly connected to a second block 621, which is located within the second sliding groove 15 and slidably connected to the heat exchange box 1.

[0056] Reference Figure 5 A first spring is installed in the first slide groove 14, with one end fixedly connected to the heat exchange box 1 and the other end fixedly connected to the first block 611. A second spring is installed in the second slide groove 15, with one end fixedly connected to the heat exchange box 1 and the other end fixedly connected to the second block 621. The installation of the first and second springs facilitates the reset of the first sealing half-ring 61 and the second sealing half-ring 62.

[0057] Reference Figure 2 , Figure 6 and Figure 7 When the heat exchange tube 52 is inserted into the insertion hole 11, the heat exchange tube 52 passes between the first sealing half ring 61 and the second sealing half ring 62. The tightening sleeve 63 is fitted over the heat exchange tube 52. The inner diameter of the tightening sleeve 63 gradually decreases from one end near the sealing half ring to the other end. When the tightening sleeve 63 is fitted over the first sealing half ring 61 and the second sealing half ring 62, the first sealing half ring 61 and the second sealing half ring 62 form a sealing ring and abut against the outer wall of the heat exchange tube 52 to isolate the interior of the heat exchange box 1 from the outside.

[0058] Reference Figure 5 , Figure 6 and Figure 7 The heat exchange box 1 has a movable cavity 13, and the sealed cavity 12 communicates with the movable cavity 13. The heat exchange box 1 is connected to a control device 7, which includes a cylinder 71, a drive rod 72, a control rod 73, a first actuating rod 74, a lever 75, a synchronizing rod 76, and a second actuating rod 77. The cylinder 71 is fixedly connected to the drive rod 72. Multiple control rods 73 are provided; one end of each control rod 73 is fixedly connected to the drive rod 72, and the other end passes through the heat exchange box 1 and extends into the movable cavity 13. The control rods 73 are slidably connected to the heat exchange box 1. Each set of heat exchange tubes 52 corresponds to one control rod 73, and each control rod 73 is hinged to multiple first actuating rods 74. The end of the first actuating rod 74 away from the control rod 73 is hinged to a tightening sleeve 63.

[0059] When cylinder 71 is activated and its drive shaft extends, the drive rod 72 moves, causing the control rod 73 to move into the movable cavity 13. The control rod 73, through the first actuating rod 74, moves the tightening sleeve 63 closer to the first sealing half-ring 61 and the second sealing half-ring 62, thereby controlling the sealing structure 6. When the drive shaft of cylinder 71 retracts, the drive rod 72 and control rod 73 move in opposite directions, causing the tightening sleeve 63 to move in the opposite direction. The first spring resets the first sealing half-ring 61, and the second spring resets the second sealing half-ring 62.

[0060] Reference Figure 5 , Figure 6 and Figure 7 Both levers 75 and synchronizing rods 76 are located within the movable cavity 13. Multiple levers 75 are provided, with their central portions rotatably connected to the heat exchange box 1 via a rotating shaft. Each end of the lever 75 has a first sliding hole 751 and a second sliding hole 753. A first slider 752, slidably connected to the lever 75, is located within the first sliding hole 751 and is fixedly connected to the control rod 73. A second slider 754, slidably connected to the lever 75, is located within the second sliding hole 753 and is connected to the synchronizing rod 76. Multiple synchronizing rods 76 are provided, slidably connected to the heat exchange box 1, and their length direction is parallel to the length direction of the control rod 73. Each synchronizing rod 76 is hinged with multiple second acting rods 77, the end of which is away from the synchronizing rod 76 and hinged to the tightening sleeve 63.

[0061] When the control lever 73 is activated, the first slider 752 on the control lever 73 slides in the first sliding hole 751 of the lever 75, causing the lever 75 to rotate around the pivot. This, in turn, causes the second slider 754 in the second sliding hole 753 of the lever 75 to drive the synchronizing rod 76 to move. The synchronizing rod 76 drives the tightening sleeve 63 to move through multiple second action rods 77, thereby achieving synchronous control of the sealing structure 6 corresponding to each set of heat exchange tubes 52. This improves the synchronicity and stability of the control of the sealing structure 6, and achieves reliable isolation between the inside of the heat exchange box 1 and the outside world, facilitating better waste heat recovery.

[0062] Reference Figure 8 and Figure 9 It also includes fixing devices 8, of which multiple sets are provided, and the specific number can be set according to actual conditions. Multiple sets of fixing devices 8 are distributed along the length direction of the drive rod 72. The heat exchange box 1 has a groove structure 16, and the mounting plate 51 has a limiting cavity 511 and a through hole 512. The through hole 512 connects the outside to the limiting cavity 511, and the through hole 512 is correspondingly set with the groove structure 16. The bottom end of the fixing device 8 is located in the groove structure 16, and when the top end of the fixing device 8 extends through the through hole 512 to the limiting cavity 511, it is used to fix the mounting plate 51 to the heat exchange box 1.

[0063] Reference Figure 9 The fixing device 8 includes a drive block 81, a moving rod 82, a limiting plate 83, a first fixing rod 84, a second fixing rod 85, a return spring 86, and a top block 87. One end of the drive block 81 is fixedly connected to the drive rod 82, and the other end has an inclined surface. The drive block 81 can be selectively inserted into the slot structure 16. The top end of the moving rod 82 is fixedly connected to the limiting plate 83, and the limiting plate 83 is slidably connected to the heat exchange box 1. The first end of the first fixing rod 84 and the first end of the second fixing rod 85 are both rotatably connected to the limiting plate 83. The return spring 86 is located between the first fixing rod 84 and the second fixing rod 85, with one end connected to the second end of the first fixing rod 84 and the other end connected to the second end of the second fixing rod 85.

[0064] Reference Figure 9 The top block 87 is located in the limiting cavity 511 and is fixedly connected to the mounting plate 51. When the driving block 81 abuts against the driving rod 72, the first fixing rod 84 and the second fixing rod 85 extend into the limiting cavity 511, so that the top block 87 is inserted between the first fixing rod 84 and the second fixing rod 85. The top block 87 abuts against both the first fixing rod 84 and the second fixing rod 85, so that both the first fixing rod 84 and the second fixing rod 85 are engaged with the mounting plate 51.

[0065] The driving block 81 can be a wedge-shaped block or a hemispherical block. When the driving block 81 is inserted into the slot structure 16, it pushes the moving rod 82 upward, thereby driving the limiting plate 83, the first fixed rod 84, and the second fixed rod 85 to move until the top block 87 is inserted between the first fixed rod 84 and the second fixed rod 85, causing the return spring 86 to stretch, so that the first fixed rod 84 and the second fixed rod 85 are engaged with the heat exchange box 1, thus fixing the mounting plate 51 to the heat exchange box 1. When the driving block 81 is disengaged from the slot structure 16, the weight of the moving rod 82, the limiting plate 83, the first fixed rod 84, and the second fixed rod 85, plus the restoring force of the return spring 86, causes the first fixed rod 84 and the second fixed rod 85 to disengage from the limiting cavity 511.

[0066] The operating principle of this application is as follows: The input pipes 2 and output pipes 3 on both sides of the heat exchange box 1 facilitate the input and output of flue gas. The insertion hole 11 at the top of the heat exchange box 1 facilitates the insertion of the heat exchange tube 52. The isolation plate 521 and channels inside the heat exchange tube 52 allow water to flow in the first space 522 and the second space 523 for sufficient heat exchange. The water supply structure 53 and the water outlet structure 54 facilitate the input and output of water. The mounting plate 51 abuts against the heat exchange box 1 to ensure the stability of the heat exchange tube 52 installation, thereby achieving effective recovery of waste heat in the toner production field. Furthermore, when maintenance of the heat exchange device 5 is required, the heat exchange tube 52 can be pulled out of the insertion hole 11, separating the mounting plate 51 from the heat exchange box 1. Then, another set of heat exchange devices 5 can be replaced. The new heat exchange tube 52 is then inserted into the insertion hole 11, and the mounting plate 51 abuts against the heat exchange box 1, thus completing the replacement of the heat exchange device 5 and improving heat exchange efficiency.

[0067] The sealing structure 6 and control device 7 ensure the airtightness of the heat exchange box 1, preventing high-temperature flue gas leakage. The fixing device 8 securely connects the mounting plate 51 to the heat exchange box 1, ensuring system stability. The entire system recovers and utilizes waste heat by transferring it from the high-temperature flue gas to the coolant, reducing production costs and environmental thermal pollution, thus meeting the requirements of green and sustainable development. This represents a significant improvement over traditional waste heat recovery technologies.

[0068] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A waste heat recovery system for toner production, characterized in that: The system includes a heat exchange box (1) and a heat exchange device (5). The heat exchange box (1) has an input pipe (2) and an output pipe (3) connected to its two sides respectively. The top of the heat exchange box (1) has multiple insertion holes (11). The heat exchange device (5) includes a mounting plate (51), heat exchange tubes (52), a water supply structure (53), and a water outlet structure (54). Multiple heat exchange tubes (52) are provided and connected to the mounting plate (51). Each heat exchange tube (52) can be selectively inserted into a corresponding insertion hole (11). An isolation plate (521) is connected to the inner wall of each heat exchange tube (52), and the isolation plate (521) separates the heat exchange tube from the water supply tube. The heat exchange tube (52) is isolated into a first space (522) and a second space (523). The isolation plate (521) has a channel connecting the first space (522) and the second space (523). The water supply structure (53) and the water outlet structure (54) are both connected to the mounting plate (51). The water supply structure (53) is used to communicate with the first space (522), and the water outlet structure (54) is used to communicate with the second space (523). When the heat exchange tube (52) is inserted into the heat exchange box (1), the mounting plate (51) abuts against the heat exchange box (1).

2. The waste heat recovery system for toner production according to claim 1, characterized in that: The heat exchange tubes (52) are divided into a first group and a second group. Multiple heat exchange tubes (52) in the first group are distributed at intervals along the first direction, and multiple heat exchange tubes (52) in the second group are distributed at intervals along the first direction. The heat exchange tubes (52) in the first group and the second group are arranged alternately along the second direction, and the heat exchange tubes (52) in the first group and the heat exchange tubes (52) in the second group are staggered.

3. The waste heat recovery system for toner production according to claim 2, characterized in that: The heat exchange box (1) has multiple sealing cavities (12) inside, and each sealing cavity (12) is connected to the insertion hole (11). Each sealing cavity (12) is provided with a sealing structure (6), which includes a first sealing half ring (61), a second sealing half ring (62), and a tightening sleeve (63). The first sealing half ring (61) is slidably connected to the side wall of the sealing cavity (12) away from the outside, and the second sealing half ring (62) is slidably connected to the side wall of the sealing cavity (12) away from the outside. The heat exchange tube (52) is inserted from... The first sealing half ring (61) and the second sealing half ring (62) pass through each other. The tightening sleeve (63) is fitted on the heat exchange tube (52). The inner diameter of the tightening sleeve (63) gradually decreases from one end to the other. When the tightening sleeve (63) is fitted on the first sealing half ring (61) and the second sealing half ring (62), the first sealing half ring (61) and the second sealing half ring (62) form a sealing ring and abut against the outer wall of the heat exchange tube (52) to isolate the interior of the heat exchange box (1) from the outside.

4. A waste heat recovery system for toner production according to claim 3, characterized in that: The heat exchange box (1) is connected to a movable cavity (13), and the sealed cavity (12) is connected to the movable cavity (13). The heat exchange box (1) is connected to a control device (7). The control device (7) includes a cylinder (71), a drive rod (72), a control rod (73), and a first action rod (74). The cylinder (71) is connected to the heat exchange box (1), and the drive rod (72) is connected to the cylinder (71). Multiple control rods (73) are provided. One end of the control rod (73) is connected to the drive rod (72), and the other end passes through the heat exchange box (1) and extends into the movable cavity (13). Each set of heat exchange tubes (52) corresponds to a control rod (73). Each control rod (73) is hinged to multiple first action rods (74). The end of the first action rod (74) away from the control rod (73) is hinged to the tightening sleeve (63).

5. A waste heat recovery system for toner production according to claim 4, characterized in that: The control device (7) further includes a lever (75), a synchronizing rod (76), and a second actuating rod (77). The lever (75) and the synchronizing rod (76) are both located within the movable cavity (13). The control rod (73), the lever (75), and the synchronizing rod (76) form a control group. Each heat exchange tube (52) corresponds to one control group. The middle part of the lever (75) is rotatably connected to the heat exchange box (1) via a rotating shaft. The two ends of the lever (75) are respectively provided with a first sliding hole (751) and a second sliding hole (753). The first sliding hole (751) is provided with a first slider (752) that is slidably connected to the lever (75). The first slider (752) is connected to the control rod (73). The second sliding hole (753) is provided with a second slider (754) that is slidably connected to the lever (75). The second slider (754) is connected to the synchronizing rod (76). Each synchronizing rod (76) is hinged with a plurality of second action rods (77). The end of the second action rod (77) away from the synchronizing rod (76) is hinged to the tightening sleeve (63).

6. A waste heat recovery system for toner production according to claim 4, characterized in that: It also includes a fixing device (8). The heat exchange box (1) has a groove structure (16). The mounting plate (51) has a limiting cavity (511) and a through hole (512). The through hole (512) connects to the outside and the limiting cavity (511). The through hole (512) is correspondingly set with the groove structure (16). The bottom end of the fixing device (8) is located in the groove structure (16). When the top end of the fixing device (8) passes through the through hole (512) and extends to the limiting cavity (511), it is used to fix the mounting plate (51) and the heat exchange box (1).

7. A waste heat recovery system for toner production according to claim 6, characterized in that: The fixing device (8) includes a drive block (81), a moving rod (82), a limiting plate (83), a first fixing rod (84), a second fixing rod (85), a return spring (86), and a top block (87). The drive block (81) is connected to the drive rod (72), and the drive block (81) can be selectively inserted into the slot structure (16). The top end of the moving rod (82) is connected to the limiting plate (83), the limiting plate (83) is slidably connected to the heat exchange box (1), the first end of the first fixed rod (84) and the first end of the second fixed rod (85) are rotatably connected to the limiting plate (83), the return spring (86) is disposed between the first fixed rod (84) and the second fixed rod (85), one end of the return spring (86) is connected to the second end of the first fixed rod (84) and the other end is connected to the second end of the second fixed rod (85); The top block (87) is located in the limiting cavity (511) and connected to the mounting plate (51). When the driving block (81) abuts against the driving rod (72), the first fixing rod (84) and the second fixing rod (85) extend into the limiting cavity (511), and the top block (87) is inserted between the first fixing rod (84) and the second fixing rod (85). The top block (87) abuts against both the first fixing rod (84) and the second fixing rod (85) to make both the first fixing rod (84) and the second fixing rod (85) engage with the mounting plate (51).

8. A waste heat recovery system for toner production according to claim 1, characterized in that: The input pipe (2) includes an input section and a diffusion section. The input section and the diffusion section are integrally formed. The diffusion section is connected to the heat exchange box (1). The inner diameter of the diffusion section gradually increases from one end near the input section to the other end.

9. A waste heat recovery system for toner production according to claim 1, characterized in that: The output pipe (3) includes an output section and a collection section. The collection section is connected to the heat exchange box (1). The output section and the collection section are integrally formed. The inner diameter of the collection section gradually decreases from one end away from the output section to the other end.

10. A waste heat recovery system for toner production according to claim 1, characterized in that: The bottom of the heat exchange box (1) is connected to a drain pipe (4).

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