Low-temperature waste heat recovery and utilization heat exchanger

Abstract

The application relates to the technical field of heat exchangers, and discloses a low-temperature waste heat recycling heat exchanger which comprises a heat exchange cylinder, the upper surface of the heat exchange cylinder is provided with a round opening, four communication holes are arranged on the two sides of the heat exchange cylinder, a T-shaped ring groove is arranged on the inner side of the upper surface of the heat exchange cylinder outside the round opening, a T-shaped rotating ring is slidably connected to the inner side of the T-shaped ring groove, a circular sealing plate is fixedly connected to the bottom of the T-shaped rotating ring, and the upper surface of the circular sealing plate is attached to the inner side of the upper surface of the heat exchange cylinder; the round opening, the communication holes, the T-shaped ring groove, the T-shaped rotating ring, the circular sealing plate, the water inlet pipe, the water inlet valve, the water outlet pipe, the water outlet valve and the connecting pipe arranged on the heat exchange cylinder are convenient for communication with the outside world, the water inlet pipe can rotate and adjust the position along with the circular sealing plate, the connection of the pipeline in actual application is more convenient, and the recycling of the low-temperature waste heat is more convenient.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger technology, specifically to a low-temperature waste heat recovery and utilization heat exchanger. Background Technology

[0002] A heat exchanger (also known as a heat exchanger or heat exchange equipment) is a device used to transfer heat from a hot fluid to a cold fluid to meet specified process requirements. It is an industrial application of convective heat transfer and heat conduction. Heat exchangers can be classified in different ways. According to their operation process, they can be divided into three main categories: indirect-flow type, mixing type, and regenerative type (or regenerative type). According to the compactness of their surface, they can be divided into two categories: compact type and non-compact type.

[0003] Existing heat exchangers are inconvenient to replace during use, and the fixed position of the inlet pipe makes it difficult to adjust its position according to actual conditions, resulting in inconvenient connection with the outside world. Moreover, after long-term use, the heat exchanger needs to be flushed and cleaned inside the heat exchange container, and it is not convenient to discharge the flushing water and dirt mixture after cleaning. Therefore, we propose a low-temperature waste heat recovery heat exchanger. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a low-temperature waste heat recovery heat exchanger, which solves the problems mentioned in the background.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a low-temperature waste heat recovery heat exchanger, comprising a heat exchange cylinder, a circular opening on the upper surface of the heat exchange cylinder, four connecting holes on each side of the heat exchange cylinder, a T-shaped annular groove on the inner upper surface of the heat exchange cylinder outside the circular opening, a T-shaped rotating ring slidably connected to the inner side of the T-shaped annular groove, a circular sealing plate fixedly connected to the bottom of the T-shaped rotating ring, the upper surface of the circular sealing plate being in contact with the inner upper surface of the heat exchange cylinder, a water inlet pipe fixedly connected to the left side of the upper surface of the circular sealing plate, a water inlet valve fixedly installed on the outer wall of the water inlet pipe, a water outlet pipe fixedly installed on the lower right side of the heat exchange cylinder, and a water outlet valve fixedly installed on the outer wall of the water outlet pipe. The heat exchange cylinder has two connecting plates fixedly connected inside. A through-hole is provided on the right side of each connecting plate. Two connecting pipes are fixedly connected to the left side of the heat exchange cylinder, respectively communicating with the interior of the two connecting holes at the top and bottom of the left side. A U-shaped heat exchange tube is provided on the left side of the heat exchange cylinder, with its right ends passing through the two connecting holes in the middle of the left side and extending to the inside of the two connecting holes. From top to bottom, a second and a third U-shaped heat exchange tube are arranged on the right side of the heat exchange cylinder. The left ends of the second U-shaped heat exchange tube pass through the two connecting holes at the top right side, with one end extending to the inside of the connecting hole at the top left and the other end extending to the connecting hole at the top. Inside the hole, the left ends of the third U-shaped heat exchange tube pass through the two connecting holes on the lower right side, with one end extending to the inside of the lowermost connecting hole on the left and the other end extending to the inside of the connecting hole below. U-shaped outer tubes are respectively fitted on both sides of the heat exchange cylinder of the first, second, and third U-shaped heat exchange tubes. The right ends of the left U-shaped outer tube are connected to the inside of the two connecting holes in the middle on the left side. The left ends of the upper right U-shaped outer tube are connected to the inside of the two connecting holes on the upper right side. The left ends of the lower right U-shaped outer tube are connected to the inside of the two connecting holes on the lower right side. A connecting... The heat exchange cylinder has a connecting block with triangular insertion holes at its top and bottom. Two fixing blocks are symmetrically fixed to the inner sides of the multiple U-shaped outer tubes on both sides of the heat exchange cylinder. Two movable holes are formed on the upper surface of each fixing block. A U-shaped connecting rod is slidably connected to the inner sides of the two movable holes on the same fixing block. A spring is fixedly connected between the opposite ends of two adjacent U-shaped connecting rods on the side closest to the heat exchange cylinder. Triangular insertion blocks are fixedly connected between the opposite ends of two adjacent U-shaped connecting rods on the side away from the heat exchange cylinder. The triangular insertion blocks are inserted into the inner sides of the triangular insertion holes. A notch is formed on the side of the U-shaped connecting rod away from the heat exchange cylinder. Limiting plates are rotatably connected to the opposite sides of two adjacent fixing blocks via a rotating shaft.The limiting piece engages with the inside of the notch.

[0007] Preferably, two sealing rings 1 are fixedly connected to the left side of the heat exchange cylinder outside the first U-shaped heat exchange tube, and two sealing rings 2 are fixedly connected to the right side of the heat exchange cylinder outside the second U-shaped heat exchange tube and the outer wall of the third U-shaped heat exchange tube, respectively.

[0008] Preferably, the lower surface of the heat exchange cylinder has a disassembly port, a retaining ring is integrally formed on the upper inner side of the disassembly port, a liquid collection box is engaged on the inner side of the disassembly port, the top of the liquid collection box is in contact with the bottom of the retaining ring, and slots are formed on both sides of the liquid collection box on the inner side of the disassembly port. Inclined surfaces are integrally formed on both sides of the bottom of the liquid collection box. The bottom of the heat exchange cylinder has symmetrical movable ports, and an L-shaped support plate is slidably connected to the inner side of the movable port. A spring is fixedly connected between the L-shaped support plate and the opposite side of the movable port. A wedge-shaped support block is integrally formed at the end of the L-shaped support plate near the inclined surface, and the wedge-shaped support block is in contact with the opposite side of the inclined surface. A moving groove is connected between the movable port and the disassembly port. A locking block is fixedly connected to the top of the L-shaped support plate near the inner side of the moving groove, and the locking block is engaged with the inner side of the slot.

[0009] Preferably, the inner front surface and inner rear surface of the circular opening are provided with vertical grooves, and a sliding block is slidably connected to the inner side of the vertical groove. A cylinder is fixedly connected between the opposite ends of the two sliding blocks. A circular groove is provided on the outer wall of the cylinder. A spring is fixedly connected between the sliding block and the opposite side of the vertical groove. Two symmetrical cavities are provided inside the circular sealing plate. A moving block is slidably connected to the inner side of the cavity. A handle is provided above the circular sealing plate on the outer side of the cylinder. Both ends of the bottom of the handle penetrate the upper surface of the circular sealing plate and extend to the inner side of the two cavities. Both ends of the bottom of the handle are fixedly connected to the top of the two moving blocks. Two crossbars are integrally formed on the inner side of the handle. The opposite ends of the two crossbars extend to the inner side of the circular groove and are slidably connected to the circular groove.

[0010] Preferably, an anti-slip pad is fixedly connected to the bottom of the cylinder.

[0011] Preferably, the outer wall of the handle is fitted with a sponge sleeve.

[0012] Preferably, a rubber ring is fixedly connected to the inner sidewall of the connecting hole.

[0013] Preferably, a rubber pad is fixedly connected to the inner wall of the notch.

[0014] This invention provides a low-temperature waste heat recovery heat exchanger, which has the following beneficial effects:

[0015] (1) The present invention facilitates communication with the outside world by setting a circular opening, a connecting hole, a T-shaped annular groove, a T-shaped rotating ring, a circular sealing plate, a water inlet pipe, a water inlet valve, a water outlet pipe, a water outlet valve, and a connecting pipe on the heat exchange cylinder. The water inlet pipe can rotate and adjust its position with the circular sealing plate, making it more convenient to connect the pipes in actual applications and to recover and utilize low-temperature waste heat. Furthermore, the U-shaped heat exchange tube 1, U-shaped heat exchange tube 2, U-shaped heat exchange tube 3, and U-shaped outer tube in the present invention are easy to disassemble and install by setting a connecting plate, a connecting hole, and a connecting block. This makes it easy to remove the U-shaped heat exchange tube 1, U-shaped heat exchange tube 2, and U-shaped heat exchange tube 3 from the inside of the heat exchange cylinder for cleaning. In addition, the setting of connecting block, triangular plug, fixing block, movable hole, U-shaped connecting rod, spring 1, triangular plug, notch, and limiting plate can ensure that the U-shaped heat exchange tube 1, U-shaped heat exchange tube 2, and U-shaped heat exchange tube 3 are more stable after being installed inside the heat exchange cylinder and do not affect disassembly, making it more convenient to use.

[0016] (2) The present invention, through the liquid collection box, can collect the water used for rinsing and the impurities removed during the cleaning of the heat exchanger cylinder. The liquid collection box is designed with a snap-fit, movable opening, L-shaped support plate, spring 2, moving groove and locking block to facilitate the disassembly and installation of the liquid collection box at the disassembly port, thereby facilitating the cleaning of the collected dirty water. The L-shaped support plate will support the bottom of the liquid collection box to ensure the stability of the liquid collection box after installation. The wedge-shaped support block will abut against the inclined surface, and under the action of spring 2, it will push the liquid collection box upward, so that the top of the liquid collection box is tightly attached to the bottom of the retaining ring, thereby ensuring the sealing of the heat exchanger cylinder when the liquid collection box is installed at the disassembly port.

[0017] (3) The present invention utilizes a set of vertical grooves, sliding blocks, cylinders, circular grooves, springs, cavities, moving blocks, handles, and crossbars. Under normal conditions, springs will push the sliding blocks downwards, so that the bottom end of the cylinder is tightly pressed against the center of the upper surface of the circular sealing plate. This increases the friction of the circular sealing plate when it rotates in the circular opening, thus ensuring that the circular sealing plate will not easily move the water inlet pipe without the influence of external forces, ensuring its stability. During installation, when it is necessary to adjust the position of the water inlet pipe according to the actual situation, simply hold the handle and pull it upwards. Under the action of the crossbar, the bottom of the cylinder will move away from the circular sealing plate. At this time, it is more convenient to rotate the circular sealing plate to adjust the position of the water inlet pipe. Furthermore, since there is a circular groove on the outside of the cylinder, the crossbar can rotate along the circular groove, thus not affecting the hand holding the handle to rotate the circular sealing plate to adjust its position. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2This is a side view of the connecting plate in this invention.

[0020] Figure 3 This is a schematic diagram of the cylinder structure in this invention;

[0021] Figure 4 In this invention Figure 1 A magnified structural diagram at point A;

[0022] Figure 5 In this invention Figure 1 A magnified structural diagram at point B;

[0023] Figure 6 In this invention Figure 1 A magnified structural diagram at point C;

[0024] Figure 7 In this invention Figure 1 A magnified structural diagram at point D.

[0025] In the diagram: 1. Heat exchanger cylinder; 2. Round opening; 3. Connecting hole; 4. T-shaped annular groove; 5. T-shaped rotating ring; 6. Circular sealing plate; 7. Inlet pipe; 8. Inlet valve; 9. Outlet pipe; 10. Outlet valve; 11. Connecting plate; 12. Connecting hole; 13. Connecting pipe; 14. U-shaped heat exchanger tube one; 15. U-shaped heat exchanger tube two; 16. U-shaped heat exchanger tube three; 17. U-shaped outer tube; 18. Connecting block; 19. Triangular socket; 20. Fixing block; 21. Movable hole; 22. U-shaped connecting rod; 23. Spring one; 24. Triangular socket; 25. Notch 26. Limiting plate; 27. Sealing ring one; 28. Sealing ring two; 29. ​​Disassembly port; 30. Retaining ring; 31. Liquid collection box; 32. Buckle; 33. Inclined surface; 34. Movable port; 35. L-shaped support plate; 36. Spring two; 37. Wedge-shaped support block; 38. Moving groove; 39. Locking block; 40. Vertical groove; 41. Sliding block; 42. Cylinder; 43. Circular groove; 44. Spring three; 45. Cavity; 46. Moving block; 47. Handle; 48. Crossbar; 49. Anti-slip pad; 50. Sponge sleeve; 51. Rubber ring; 52. Rubber pad. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] like Figure 1-7As shown, the present invention provides a technical solution: a low-temperature waste heat recovery heat exchanger, including a heat exchange cylinder 1. A circular opening 2 is formed on the upper surface of the heat exchange cylinder 1. Four connecting holes 3 are formed on both sides of the heat exchange cylinder 1. A T-shaped annular groove 4 is formed on the inner upper surface of the heat exchange cylinder 1 outside the circular opening 2. A T-shaped rotating ring 5 is slidably connected to the inner side of the T-shaped annular groove 4. A circular sealing plate 6 is fixedly connected to the bottom of the T-shaped rotating ring 5. The upper surface of the circular sealing plate 6 is in contact with the inner upper surface of the heat exchange cylinder 1. A water inlet pipe 7 is fixedly connected to the left side of the upper surface of the circular sealing plate 6. A water inlet valve 8 is fixedly installed on the outer wall of the water inlet pipe 7. A water outlet pipe 9 is fixedly installed on the lower right side of the heat exchange cylinder 1. A water outlet valve 10 is fixedly installed on the outer wall of the water outlet pipe 9. Two connecting plates 11 are fixedly connected internally. A through-hole 12 is provided on the right side of each connecting plate 11. Two connecting pipes 13 are fixedly connected to the left side of the heat exchange cylinder 1. The two connecting pipes 13 are respectively connected to the interior of two connecting holes 3 at the top and bottom of the left side. A U-shaped heat exchange tube 14 is provided on the left side of the heat exchange cylinder 1. The right ends of the U-shaped heat exchange tube 14 pass through the two connecting holes 3 in the middle of the left side and extend to the inside of the two connecting holes 12. From top to bottom, a U-shaped heat exchange tube 2 15 and a U-shaped heat exchange tube 3 16 are arranged sequentially on the right side of the heat exchange cylinder 1. The left ends of the U-shaped heat exchange tube 2 15 pass through the two connecting holes 3 at the top right side, with one end extending to the inside of the connecting hole 3 at the top left side and the other end extending... The left ends of the U-shaped heat exchange tube 16 pass through the two connecting holes 3 on the lower right side, with one end extending to the inside of the lowermost connecting hole 3 on the left and the other end extending to the inside of the lower connecting hole 12. U-shaped outer tubes 17 are respectively fitted on both sides of the heat exchange cylinder 1, with the right ends of the left U-shaped outer tube 17 connected to the inside of the two connecting holes 3 in the middle on the left. The left ends of the upper right U-shaped outer tube 17 are connected to the inside of the two connecting holes 3 on the upper right. The left ends of the lower right U-shaped outer tube 17 are connected to the inside of the two connecting holes 3 on the lower right. A connecting block 18 is fixedly connected to the inner side of the heat exchange cylinder 1. The top and bottom of the connecting block 18 are provided with triangular insertion ports 19. Fixing blocks 20 are symmetrically fixedly connected to the inner sides of multiple U-shaped outer tubes 17 on both sides of the heat exchange cylinder 1. Two movable holes 21 are provided on the upper surface of the fixing block 20. A U-shaped connecting rod 22 is slidably connected to the inner side of the two movable holes 21 on the same fixing block 20. A spring 23 is fixedly connected between the opposite ends of two adjacent U-shaped connecting rods 22 on the side closer to the heat exchange cylinder 1. A triangular insertion block 24 is fixedly connected between the opposite ends of two adjacent U-shaped connecting rods 22 on the side away from the heat exchange cylinder 1. The triangular insertion block 24 is inserted into the inner side of the triangular insertion port 19. A notch 25 is provided on the side of the U-shaped connecting rod 22 away from the heat exchange cylinder 1.The opposite sides of two adjacent fixed blocks 20 are rotatably connected to limiting plates 26 via rotating shafts. The limiting plates 26 engage with the inner side of the notch 25. This invention, through the circular opening 2, connecting hole 3, T-shaped annular groove 4, T-shaped rotating ring 5, circular sealing plate 6, water inlet pipe 7, water inlet valve 8, water outlet pipe 9, water outlet valve 10, and connecting pipe 13 provided on the heat exchange cylinder 1, facilitates communication with the outside world. Furthermore, the water inlet pipe 7 can rotate with the circular sealing plate 6 to adjust its position, making pipe connection easier in practical applications and facilitating the recovery and utilization of low-temperature waste heat. Additionally, the U-shaped heat exchange tube 14, U-shaped heat exchange tube 25, and U-shaped heat exchange tube 3 in this invention... The U-shaped outer tube 16 and U-shaped outer tube 17 are easily disassembled and installed via the connecting plate 11, connecting hole 12, and connecting block 18. This facilitates the removal and replacement of U-shaped heat exchange tube 14, U-shaped heat exchange tube 25, and U-shaped heat exchange tube 36 from the heat exchange cylinder 1 for cleaning. Furthermore, the connecting block 18, triangular socket 19, fixing block 20, movable hole 21, U-shaped connecting rod 22, spring 23, triangular socket 24, notch 25, and limiting piece 26 ensure stable installation of U-shaped heat exchange tube 14, U-shaped heat exchange tube 25, and U-shaped heat exchange tube 36 inside the heat exchange cylinder 1 without hindering disassembly, making them more convenient to use.

[0028] Furthermore, two sealing rings 27 are fixedly connected to the outer side of the U-shaped heat exchange tube 14 on the left side of the inside of the heat exchange cylinder 1, and two sealing rings 28 are fixedly connected to the outer side of the U-shaped heat exchange tube 15 and the outer side of the U-shaped heat exchange tube 16 on the right side of the inside of the heat exchange cylinder 1, respectively. This prevents water in the heat exchange cylinder 1 from entering the interior of the U-shaped outer tube 17 through the connecting hole 3, thereby effectively preventing impurities in the water from affecting the U-shaped heat exchange tube 14, U-shaped heat exchange tube 15 and U-shaped heat exchange tube 16 inside the U-shaped outer tube 17, making it difficult to clean the surface after impurities adhere to it, and causing the water quality inside the heat exchange cylinder 1 to deteriorate.

[0029] Furthermore, a disassembly port 29 is provided on the lower surface of the heat exchange cylinder 1. A retaining ring 30 is integrally formed on the upper inner side of the disassembly port 29. A liquid collection box 31 is engaged inside the disassembly port 29. The top of the liquid collection box 31 is in contact with the bottom of the retaining ring 30. A latch 32 is provided on both sides of the liquid collection box 31 inside the disassembly port 29. Inclined surfaces 33 are integrally formed on both sides of the bottom of the liquid collection box 31. A movable port 34 is symmetrically provided on the bottom of the heat exchange cylinder 1. An L-shaped support plate 35 is slidably connected to the inner side of the movable port 34. A spring 36 is fixedly connected between the L-shaped support plate 35 and the opposite side of the movable port 34. A wedge-shaped support block 37 is integrally formed at the end of the L-shaped support plate 35 near the inclined surface 33. The wedge-shaped support block 37 is in contact with the opposite side of the inclined surface 33. A moving groove 38 is connected between the movable port 34 and the disassembly port 29. The top of the L-shaped support plate 35 is fixed near the inner side of the moving groove 38. The device is equipped with a locking block 39, which engages with the inside of the locking slot 32. The liquid collection box 31 allows for the collection of rinsing water and impurities during the cleaning of the heat exchange cylinder 1. The liquid collection box 31, utilizing the locking slot 32, movable opening 34, L-shaped support plate 35, spring 2 36, movable groove 38, and locking block 39, facilitates the removal and installation of the liquid collection box 31 at the disassembly port 29, thus facilitating the cleaning of collected dirty water. The L-shaped support plate 35 supports the bottom of the liquid collection box 31, ensuring its stability after installation. Furthermore, the wedge-shaped support block 37 abuts against the inclined surface 33, and under the action of the spring 2 36, pushes the liquid collection box 31 upwards, ensuring that the top of the liquid collection box 31 tightly fits against the bottom of the retaining ring 30. This guarantees the sealing of the heat exchange cylinder 1 when the liquid collection box 31 is installed at the disassembly port 29.

[0030] Furthermore, vertical grooves 40 are formed on both the inner front and inner rear surfaces of the circular opening 2. Sliding blocks 41 are slidably connected to the inner sides of the vertical grooves 40. A cylinder 42 is fixedly connected between the opposite ends of the two sliding blocks 41. A circular groove 43 is formed on the outer wall of the cylinder 42. A spring 44 is fixedly connected between the opposite sides of the sliding blocks 41 and the vertical grooves 40. Two symmetrical cavities 45 are formed inside the circular sealing plate 6. Moving blocks 46 are slidably connected to the inner sides of the cavities 45. A handle 47 is provided above the circular sealing plate 6, located outside the cylinder 42. Both ends of the bottom of the handle 47 penetrate the upper surface of the circular sealing plate 6 and extend to the inner sides of the two cavities 45. Both ends of the bottom of the handle 47 are fixedly connected to the tops of the two moving blocks 46. Two horizontal bars 48 are integrally formed on the inner side of the handle 47. The opposite ends of the two horizontal bars 48 extend to the inner sides of the circular grooves 43 and are slidably connected to the circular grooves 43. This invention utilizes the setting of a pair of vertical... The components 40, 41, 42, 43, 44, 45, 46, 47, and 48 are arranged such that, under normal conditions, the spring 44 pushes the 41 downwards, causing the bottom of the cylinder 42 to press tightly against the center of the upper surface of the circular sealing plate 6. This increases the friction of the circular sealing plate 6 when rotating within the circular opening 2, ensuring that the circular sealing plate 6 will not easily move the inlet pipe 7 without external force, thus guaranteeing its stability. During installation, when the position of the inlet pipe 7 needs to be adjusted according to the actual situation, simply hold the handle 47 and pull it upwards. This will cause the bottom of the cylinder 42 to move away from the circular sealing plate 6 under the action of the crossbar 48. At this time, it is more convenient to rotate the circular sealing plate 6 to adjust the position of the inlet pipe 7. Furthermore, since the cylinder 42 has a circular groove 43 on its outer side, the crossbar 48 can rotate along the groove 43, thus not affecting the hand holding the handle 47 to rotate the circular sealing plate 6 to adjust its position.

[0031] Furthermore, an anti-slip pad 49 is fixedly connected to the bottom of the cylinder 42 to increase the friction between the cylinder 42 and the circular sealing plate 6, thereby ensuring that when the bottom end of the cylinder 42 abuts against the circular sealing plate 6 through the anti-slip pad 49, the circular sealing plate 6 is more stable and less prone to movement under the action of external force.

[0032] Furthermore, the outer wall of the handle 47 is fitted with a sponge sleeve 50, which is soft, comfortable, and easy to hold.

[0033] Furthermore, a rubber ring 51 is fixedly connected to the inner wall of the connection hole 12 to increase friction, so that the U-shaped heat exchange tube 14, U-shaped heat exchange tube 2 15 and U-shaped heat exchange tube 3 16 are inserted into the connection hole 12 more tightly.

[0034] Furthermore, a rubber pad 52 is fixedly connected to the inner wall of the notch 25 to increase the friction between the notch 25 and the limiting piece 26, making the limiting piece 26 more stable when it is engaged inside the notch 25.

[0035] In summary, the workflow of this invention is as follows: The invention, through the circular opening 2, connecting hole 3, T-shaped annular groove 4, T-shaped rotating ring 5, circular sealing plate 6, water inlet pipe 7, water inlet valve 8, water outlet pipe 9, water outlet valve 10, and connecting pipe 13 set on the heat exchange cylinder 1, facilitates communication with the outside world. Furthermore, the water inlet pipe 7 can rotate and adjust its position along with the circular sealing plate 6, making it more convenient for pipe connections in practical applications and facilitating the recovery and utilization of low-temperature waste heat. Additionally, the U-shaped heat exchange tube 14, U-shaped heat exchange tube 25, U-shaped heat exchange tube 36, and U-shaped outer pipe 17 in this invention, through the set connection... Plate 11, connecting hole 12, and connecting block 18 facilitate disassembly and installation, making it easy to remove U-shaped heat exchange tube 14, U-shaped heat exchange tube 25, and U-shaped heat exchange tube 36 from the inside of heat exchange cylinder 1 for cleaning. Furthermore, the connecting block 18, triangular socket 19, fixing block 20, movable hole 21, U-shaped connecting rod 22, spring 1 23, triangular socket 24, notch 25, and limiting piece 26 ensure that U-shaped heat exchange tube 14, U-shaped heat exchange tube 25, and U-shaped heat exchange tube 316 are more stable after being installed inside heat exchange cylinder 1 without affecting disassembly, making them more convenient to use.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-temperature waste heat recovery heat exchanger, comprising a heat exchange cylinder (1), characterized in that: The heat exchange cylinder (1) has a circular opening (2) on its upper surface. Four connecting holes (3) are respectively opened on both sides of the heat exchange cylinder (1). A T-shaped annular groove (4) is opened on the inner upper surface of the heat exchange cylinder (1) outside the circular opening (2). A T-shaped rotating ring (5) is slidably connected to the inner side of the T-shaped annular groove (4). A circular sealing plate (6) is fixedly connected to the bottom of the T-shaped rotating ring (5). The upper surface of the circular sealing plate (6) is in contact with the inner upper surface of the heat exchange cylinder (1). A water inlet pipe (7) is fixedly connected to the left side of the upper surface of the circular sealing plate (6). A water inlet valve (8) is fixedly installed on the outer wall of the water inlet pipe (7). A water outlet pipe (9) is fixedly installed on the lower right side of the heat exchange cylinder (1). A water outlet valve (10) is fixedly installed on the outer wall of the water outlet pipe (9). Two connecting plates (11) are fixedly connected inside the heat exchange cylinder (1). A through-hole (12) is opened on the right side of the connecting plate (11). Two connecting pipes (13) are fixedly connected on the left side of the heat exchange cylinder (1). The two connecting pipes (13) are respectively connected to the interior of the two connecting holes (3) at the top and bottom left side. A U-shaped heat exchange tube (14) is provided on the left side of the heat exchange cylinder (1). The two ends of the U-shaped heat exchange tube (14) pass through the two connecting holes (3) in the middle of the left side and extend to the inside of the two connecting holes (12). The right side of the heat exchange cylinder (1) from top to bottom U-shaped heat exchange tube 2 (15) and U-shaped heat exchange tube 3 (16) are arranged sequentially. The left ends of the U-shaped heat exchange tube 2 (15) pass through the two connecting holes (3) on the upper right side, with one end extending to the inside of the uppermost connecting hole (3) on the left and the other end extending to the inside of the connecting hole (12) above. The left ends of the U-shaped heat exchange tube 3 (16) pass through the two connecting holes (3) on the lower right side, with one end extending to the inside of the lowermost connecting hole (3) on the left and the other end extending to the inside of the connecting hole (12) below. The outer sides of the U-shaped heat exchange tube 1 (14), the U-shaped heat exchange tube 2 (15) and the U-shaped heat exchange tube 3 (16) are located on both sides of the heat exchange cylinder (1). A U-shaped outer tube (17) is fitted on the heat exchange cylinder (1). The two ends of the right side of the U-shaped outer tube (17) on the left side are connected to the interior of the two connecting holes (3) in the middle of the left side, respectively. The two ends of the left side of the U-shaped outer tube (17) on the upper right side are connected to the interior of the two connecting holes (3) on the upper right side, respectively. The two ends of the left side of the U-shaped outer tube (17) on the lower right side are connected to the interior of the two connecting holes (3) on the lower right side, respectively. A connecting block (18) is fixedly connected to the inner side of the U-shaped outer tube (17). The top and bottom of the connecting block (18) are provided with triangular insertion holes (19). Fixing blocks (20) are symmetrically fixedly connected to the inner sides of the multiple U-shaped outer tubes (17) on both sides of the heat exchange cylinder (1).Two movable holes (21) are provided on the upper surface of the fixed block (20). A U-shaped connecting rod (22) is slidably connected to the inner side of the two movable holes (21) on the same fixed block (20). A spring (23) is fixedly connected between the opposite ends of the two adjacent U-shaped connecting rods (22) on the side closer to the heat exchange cylinder (1). A triangular plug (24) is fixedly connected between the opposite ends of the two adjacent U-shaped connecting rods (22) on the side away from the heat exchange cylinder (1). The triangular plug (24) is inserted into the inner side of the triangular socket (19). A notch (25) is provided on the side of the U-shaped connecting rod (22) away from the heat exchange cylinder (1). A limiting piece (26) is rotatably connected to the opposite sides of the two adjacent fixed blocks (20) through a rotating shaft. The limiting piece (26) is engaged with the inner side of the notch (25).

2. The low-temperature waste heat recovery heat exchanger according to claim 1, characterized in that: The left side of the heat exchange cylinder (1) is fixedly connected to two sealing rings (27) on the outside of the first U-shaped heat exchange tube (14). The right side of the heat exchange cylinder (1) is fixedly connected to two sealing rings (28) on the outside of the second U-shaped heat exchange tube (15) and the outside of the third U-shaped heat exchange tube (16).

3. The low-temperature waste heat recovery heat exchanger according to claim 1, characterized in that: The heat exchange cylinder (1) has a disassembly port (29) on its lower surface. A retaining ring (30) is integrally formed on the upper inner side of the disassembly port (29). A liquid collection box (31) is engaged with the inner side of the disassembly port (29). The top of the liquid collection box (31) is in contact with the bottom of the retaining ring (30). Both sides of the liquid collection box (31) are provided with latches (32) on the inner side of the disassembly port (29). Inclined surfaces (33) are integrally formed on both sides of the bottom of the liquid collection box (31). The bottom of the heat exchange cylinder (1) has symmetrical movable ports (34). An L-shaped sliding connection is provided on the inner side of the movable port (34). The L-shaped tray (35) and the opposite side of the movable opening (34) are fixedly connected to a spring (36). A wedge-shaped support block (37) is integrally formed at one end of the L-shaped tray (35) near the inclined surface (33). The wedge-shaped support block (37) fits against the opposite side of the inclined surface (33). A moving groove (38) is connected between the movable opening (34) and the disassembly opening (29). A locking block (39) is fixedly connected to the top of the L-shaped tray (35) near the inner side of the moving groove (38). The locking block (39) engages with the inner side of the locking slot (32).

4. A low-temperature waste heat recovery heat exchanger according to claim 1, characterized in that: Vertical grooves (40) are provided on the inner front and inner rear surfaces of the circular opening (2). Sliding blocks (41) are slidably connected to the inner side of the vertical grooves (40). A cylinder (42) is fixedly connected between the opposite ends of the two sliding blocks (41). A circular groove (43) is provided on the outer wall of the cylinder (42). A spring (44) is fixedly connected between the opposite sides of the sliding blocks (41) and the vertical grooves (40). Two symmetrical cavities (45) are provided inside the circular sealing plate (6). Moving blocks (44) are slidably connected to the inner side of the cavities (45). 6) A handle (47) is provided above the circular sealing plate (6) on the outside of the cylinder (42). The bottom ends of the handle (47) penetrate the upper surface of the circular sealing plate (6) and extend to the inside of the two cavities (45). The bottom ends of the handle (47) are fixedly connected to the top of the two moving blocks (46). Two crossbars (48) are integrally formed on the inside of the handle (47). The opposite ends of the two crossbars (48) extend to the inside of the circular groove (43) and are slidably connected to the circular groove (43).

5. A low-temperature waste heat recovery heat exchanger according to claim 4, characterized in that: The bottom of the cylinder (42) is fixedly connected to an anti-slip pad (49).

6. A low-temperature waste heat recovery heat exchanger according to claim 4, characterized in that: The outer wall of the handle (47) is fitted with a sponge sleeve (50).

7. A low-temperature waste heat recovery heat exchanger according to claim 1, characterized in that: A rubber ring (51) is fixedly connected to the inner wall of the connecting hole (12).

8. A low-temperature waste heat recovery heat exchanger according to claim 1, characterized in that: A rubber pad (52) is fixedly connected to the inner wall of the notch (25).

Images