Plate heat exchanger for recovering waste heat of rectifying tower

Abstract

The invention relates to the technical field of waste heat recovery, and discloses a plate heat exchanger for rectifying tower waste heat recovery, which comprises a bottom plate, the inner side of the bottom plate is provided with a fixing assembly extending to the top of the bottom plate, the top of the fixing assembly is provided with a heat exchanger assembly, and the front and rear sides of the heat exchanger assembly are both provided with mounting assemblies. According to the plate heat exchanger for waste heat recovery of the rectifying tower, the filtering mechanism is arranged at the inlet end of the water pipe, when fluid flows out of the water pipe and enters the heat exchanger, the fluid firstly passes through the filtering box, the filter element is installed in the filtering box, and when the fluid flows through the filter element, the fluid flows out of the water pipe; wherein impurities, particles and the like are intercepted by the filter element, so that it is guaranteed that fluid entering the heat exchanger is clean, the impurities are prevented from blocking runners of the heat exchange pieces and affecting the heat exchange efficiency and normal operation of equipment, the purpose of arranging a filter structure is achieved, and the purpose of arranging a protection structure is achieved by arranging the mounting mechanism and the protection mechanism.

Description

Technical Field

[0001] This invention relates to the field of waste heat recovery technology, specifically a plate heat exchanger for waste heat recovery from distillation columns. Background Technology

[0002] Plate heat exchangers for waste heat recovery in distillation columns are devices that achieve efficient heat exchange through corrugated metal plates. They are specifically designed to recover waste heat from distillation processes and convert it into usable thermal energy. A search reveals Chinese Patent Publication No. CN215984125U, which discloses a plate heat exchanger for a waste heat recovery device, including a rear tube sheet. This plate heat exchanger, through the interaction of a fixed slot, telescopic groove, easy-removal block, pull block, limit block, spring, and first insert block, allows for convenient installation and fixation of the entire assembly consisting of the rear tube sheet, front plate, and heat exchange plates. This method is more economical than direct bolt installation. While time-saving, labor-saving, easy to disassemble, highly stable, and easy to maintain, the existing technical solutions mentioned above have the following drawbacks: They lack a filtration structure, making it impossible to effectively filter the waste heat medium entering the plate heat exchanger. The accumulation of impurities carried by the waste heat medium can cause blockage inside the plate heat exchanger, affecting its heat exchange efficiency and hindering its use. Furthermore, the heat exchanger is exposed to air for extended periods without a protective structure, leading to dust accumulation and susceptibility to impacts from external factors, further impacting its operation. Therefore, a plate heat exchanger for waste heat recovery in distillation columns is proposed to address these issues. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides a plate heat exchanger for waste heat recovery in distillation columns, which has the advantages of having both a filtration structure and a protective structure, thus solving the problems mentioned in the background section.

[0005] (II) Technical Solution

[0006] To achieve the aforementioned purpose of having both a filtration structure and a protective structure, the present invention provides the following technical solution: a plate heat exchanger for waste heat recovery in a distillation column, comprising a base plate, a fixing assembly extending to the top of the base plate, a heat exchanger assembly on the top of the fixing assembly, mounting assemblies on both the front and rear sides of the heat exchanger assembly, a filtration mechanism on the right side of the heat exchanger assembly, mounting mechanisms on both the left and right ends of the top of the base plate, and a protective mechanism located outside the heat exchanger assembly and extending to the inside of the mounting mechanism on the top of the base plate;

[0007] The fixing component includes slots. Two slots are provided on both the front and rear sides of the base plate. A stabilizing plate is fixedly installed inside the slot. A movable block extending to the top of the base plate is movably installed inside the slot. A U-shaped rod is fixedly installed on the top of the movable block. A card seat is fixedly installed on the top of the movable block. A fixing spring located inside the slot is fixedly installed between the movable block and the stabilizing plate.

[0008] Preferably, the heat exchanger assembly includes a first clamping plate, a first clamping plate extending to the top of the two right-side brackets is movably installed between the inner sides of the two left-side brackets, a second clamping plate extending to the top of the two left-side brackets is movably installed between the first clamping plate and the second clamping plate, a heat exchange plate is movably installed between the first clamping plate and the second clamping plate, and a water pipe extending to the inner side of the heat exchange plate is fixedly installed on the right side of the first clamping plate.

[0009] Preferably, the installation assembly includes a U-shaped frame. The top and rear ends of the first and second clamping plates are movably mounted with U-shaped frames. A fixing seat, fitted onto the outside of the first clamping plate, is fixedly mounted on the bottom of the right-side U-shaped frame. A connecting plate extending to the front of the second clamping plate is fixedly mounted on the front side of the fixing seat. A rectangular groove located on the front side of the second clamping plate is formed on the top of the connecting plate. A threaded rod extending to the left side of the connecting plate is rotatably connected to the right side of the inner wall of the rectangular groove. A threaded block, slidingly connected to the inner wall of the rectangular groove and extending to the rear side of the connecting plate, is threadedly connected to the outer side of the threaded rod. A limiting seat that engages with the outer side of the second clamping plate is fixedly mounted on the rear side of the threaded block. A knob is fixedly mounted on one left end of the threaded rod.

[0010] Preferably, the filtration mechanism includes an outer cylinder, an outer cylinder fixedly installed on the right side of the first clamping plate outside the water pipe, a filter box fixedly installed on the inner side of the outer cylinder, one right end of the water pipe extending into the inner side of the filter box, a connecting pipe fixedly installed on the right side of the inner wall of the filter box extending into the right side of the outer cylinder, a sealing plate movably installed on the top of the outer cylinder extending into the inner side of the filter box, a filter element fixedly installed at the bottom of the sealing plate inside the filter box, a box fixedly installed on the top of the sealing plate, and a frame fixedly installed between the left and right sides of the box extending to its top. A push rod extending to its inner side is slidably installed, and a pressure block is fixedly installed on the top of the push rod. Two movable plates extending to their bottoms are slidably installed between the left and right sides of the inner wall of the box. A telescopic spring fixedly connected to the inner wall of the box is fixedly installed on the opposite sides of the two movable plates. A limiting block that engages with the outer cylinder is fixedly installed on one side of the movable plate. A connecting rod is fixedly installed on the opposite sides of the two movable plates. A wedge block that slidably connects to the bottom wall of the box is fixedly installed on the opposite sides of the two connecting rods. A trapezoidal block that slidably connects to the two wedge blocks is fixedly installed at the bottom of the push rod.

[0011] Preferably, the mounting mechanism includes a base box, with two base boxes fixedly installed at each of the top left and right ends of the base plate. A limit frame is fixedly installed on the inner bottom wall of the base box, and a U-shaped plate extending to its top is slidably installed on the inner side of the limit frame. A movable cylinder that is slidably connected to the inner wall of the base box is fixedly installed on the top of the U-shaped plate. A return spring that is fixedly connected to the inner wall of the base box is fixedly installed on the inner side of the movable cylinder. A pull rod extending to the outer side of the base box is fixedly installed between the top and bottom of the movable cylinder.

[0012] Preferably, the protective mechanism includes a protective cover, and the protective cover is movably installed on the top of the base plate between the left and right base boxes. Two right-angle plates are fixedly installed on both the left and right sides of the protective cover. One end of the right-angle plate extends to the inside of the base box and is fixedly installed with a triangular block that fits against the bottom of the moving cylinder.

[0013] Preferably, the bottom of the triangular block is inclined, the top of the movable cylinder is inclined, the inner top wall of the base box is open, a limiting hole adapted to the pull rod is provided on one side inner wall of the base box, the pull rod is U-shaped, and the inner bottom wall of the protective cover is open.

[0014] Preferably, the inner top wall of the outer cylinder has an installation hole adapted to the sealing plate, the inner top wall of the filter box has a rectangular through hole adapted to the sealing plate, the front and rear sides of the outer cylinder have rectangular slots adapted to the locking blocks, and the inner bottom wall of the box has a strip hole adapted to the moving trajectory of the moving plate.

[0015] Preferably, the outer side of the U-shaped rod is wrapped with a sponge sleeve, the inner side of the card seat is provided with a groove, the card seats on the front and rear sides are symmetrically distributed, and one side of the connecting plate is provided with a strip hole that matches the moving trajectory of the threaded block. The strip hole is connected to one side of the inner wall of the rectangular groove.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present invention provides a plate heat exchanger for waste heat recovery in distillation columns, which has the following advantages:

[0018] 1. This plate heat exchanger for waste heat recovery in distillation columns features a filtration mechanism located at the inlet of the water pipe. Before the fluid flows from the water pipe into the heat exchanger, it passes through a filter box containing a filter element. As the fluid flows through the filter element, impurities and particles are intercepted, ensuring the cleanliness of the fluid entering the heat exchanger and preventing impurities from clogging the flow channels of the heat exchange plates, thus affecting heat exchange efficiency and normal equipment operation. To prevent clogging after prolonged use, the filter element can be disassembled for cleaning. Pressing down the pressure block causes the push rod to move the trapezoidal block downwards, pushing two wedge blocks to the sides. The wedge blocks, through the connecting rod, move the moving plate to the sides, releasing the limiting block from the outer cylinder, thereby allowing the sealing plate and filter element to be disassembled for easy cleaning, achieving the purpose of the filtration structure.

[0019] 2. This plate heat exchanger for waste heat recovery in distillation columns features an installation mechanism and a protective mechanism. The installation mechanism consists of a base box, a limiting frame, a U-shaped plate, a moving cylinder, a return spring, and a pull rod. The return spring provides elasticity to the moving cylinder. When the triangular block of the protective mechanism is inserted into the base box, it pushes the moving cylinder to move, compressing the return spring. When the protective mechanism needs to be disassembled, the pull rod is pulled, causing the moving cylinder to move and the triangular block to lose its support, allowing the protective mechanism to be removed for easy maintenance and repair of the heat exchanger. The protective cover protects the heat exchanger components from external impacts, dust, etc., preventing damage. The right-angle plate and triangular block, in conjunction with the installation mechanism, enable quick installation and removal of the protective cover, achieving the purpose of the protective structure. Attached Figure Description

[0020] Figure 1 This is a three-dimensional view of the structure of the present invention;

[0021] Figure 2 This is a perspective view of the fixed component and heat exchanger component of the present invention;

[0022] Figure 3 This is a partial left sectional perspective view of the mounting component of the present invention;

[0023] Figure 4 This is a partial left-side sectional perspective view of the fixing component of the present invention;

[0024] Figure 5 This is a partial perspective view of the filtration mechanism of the present invention;

[0025] Figure 6 This is a partial exploded cross-sectional view of the filtering mechanism of the present invention;

[0026] Figure 7 This is a partial cross-sectional perspective view of the filtration mechanism of the present invention;

[0027] Figure 8 This is a partial sectional perspective view of the installation mechanism and protection mechanism of the present invention;

[0028] Figure 9 This is a partial rear sectional perspective view of the installation mechanism and protection mechanism of the present invention.

[0029] In the diagram: 1. Base plate; 2. Fixing assembly; 21. Slot; 22. Stabilizing plate; 23. Moving block; 24. U-shaped rod; 25. Card seat; 26. Fixing spring; 3. Heat exchanger assembly; 31. First clamping plate; 32. Second clamping plate; 33. Heat exchange fins; 34. Water pipe; 4. Mounting assembly; 41. U-shaped frame; 42. Fixing seat; 43. Connecting plate; 44. Rectangular groove; 45. Threaded rod; 46. Threaded block; 47. Limiting seat; 48. Knob; 5. Filtering mechanism; 501. Outer cylinder; 502. Filter box; 503. Connecting pipe; 504. Sealing plate; 505. Filter element; 506. Box; 507. Frame; 508. Push rod; 509. Pressure block; 510. Moving plate; 511. Telescopic spring; 512. Limiting block; 513. Connecting rod; 514. Wedge block; 515. Trapezoidal block; 6. Mounting mechanism; 61. Base box; 62. Limiting frame; 63. U-shaped plate, 64 moving cylinder, 65 return spring, 66 pull rod, 7 protective mechanism, 71 protective cover, 72 right angle plate, 73 triangular block. Detailed Implementation

[0030] 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.

[0031] Please see Figure 1-9 The present invention provides a technical solution: a plate heat exchanger for waste heat recovery in a distillation column, comprising a base plate 1, a fixing component 2 extending to the top of the base plate 1, a heat exchanger assembly 3 on the top of the fixing component 2, mounting components 4 on both the front and rear sides of the heat exchanger assembly 3, a filter mechanism 5 on the right side of the heat exchanger assembly 3, mounting mechanisms 6 on both the left and right ends of the top of the base plate 1, and a protective mechanism 7 located outside the heat exchanger assembly 3 and extending to the inside of the mounting mechanism 6 on the top of the base plate 1.

[0032] The fixing component 2 includes a slot 21. Two slots 21 are provided on both the front and rear sides of the base plate 1 to provide installation space for components such as the stabilizing plate 22 and the movable block 23, serving as positioning and accommodating elements. The stabilizing plate 22 is fixedly installed inside the slot 21, and the movable block 23 extending to the top of the base plate 1 is movably installed inside the slot 21. It cooperates with components such as the mounting base 25 to realize the installation and fixing of the heat exchanger assembly. It can also move under external force for easy adjustment and disassembly. A U-shaped rod 24 is fixedly installed on the top of the movable block 23, and the mounting base 25 is fixedly installed on the top of the movable block 23. A fixing spring 26 located inside the slot 21 is fixedly installed between the movable block 23 and the stabilizing plate 22, providing elasticity when the movable block 23 moves, so that the movable block 23 can be reset, ensuring the fixing effect of the mounting base 25 on the heat exchanger assembly.

[0033] The heat exchanger assembly 3 includes a first clamping plate 31. The first clamping plate 31 is movably installed between the inner sides of the two right-side retainers 25 and extends to the top of them. The second clamping plate 32 is movably installed between the inner sides of the two left-side retainers 25 and extends to the top of them. Together with the first clamping plate 31, the second clamping plate 32 fixes the heat exchange fins 33. The heat exchange fins 33 are movably installed between the first clamping plate 31 and the second clamping plate 32. A water pipe 34 extending to the inner side of the heat exchange fins 33 is fixedly installed on the right side of the first clamping plate 31.

[0034] Mounting assembly 4 includes a U-shaped frame 41. The top and rear ends of the first and second clamping plates 31 are movably mounted with the U-shaped frame 41 to prevent the fixing seat 42 from sliding up and down. A fixing seat 42, fitted onto the outside of the first clamping plate 31, is fixedly mounted at the bottom of the right-side U-shaped frame 41. A connecting plate 43 extending to the front of the second clamping plate 32 is fixedly mounted on the front side of the fixing seat 42. A rectangular groove 44 is formed on the top of the connecting plate 43, located on the front side of the second clamping plate 32. A rotatable connection is made to the right side of the inner wall of the rectangular groove 44. The threaded rod 45 extending to the left side of the connecting plate 43 can drive the threaded block 46 to move by rotation, so as to realize the locking and fixing of the limiting seat 47 to the second pressing plate 32. The outer side of the threaded rod 45 is threadedly connected to the threaded block 46, which is slidably connected to the inner wall of the rectangular groove 44 and extends to the rear side of the connecting plate 43. The limiting seat 47, which is locked to the outer side of the second pressing plate 32, is fixedly installed on the rear side of the threaded block 46. A knob 48 is fixedly installed on one end of the left side of the threaded rod 45, so that the operator can rotate the threaded rod 45 to adjust the position of the limiting seat 47.

[0035] The outer side of the U-shaped rod 24 is covered with a sponge sleeve, and the inner side of the card seat 25 is provided with a groove. The card seats 25 on the front and rear sides are symmetrically distributed. One side of the connecting plate 43 is provided with a slot that matches the movement trajectory of the threaded block 46. The slot is connected to the inner wall of one side of the rectangular groove 44.

[0036] The filtration mechanism 5 includes an outer cylinder 501. The outer cylinder 501, located outside the water pipe 34, is fixedly installed on the right side of the first clamping plate 31, providing installation space for components such as the filter box 502 and sealing plate 504, and protecting the internal filtration components. The filter box 502 is fixedly installed inside the outer cylinder 501. One end of the water pipe 34 extends to the inside of the filter box 502. A connecting pipe 503 extending to the right side of the outer cylinder 501 is fixedly installed on the right side of the inner wall of the filter box 502. A sealing plate 504 extending to the inside of the filter box 502 is movably installed on the top of the outer cylinder 501. A filter element 505 located inside the filter box 502 is fixedly installed at the bottom of the sealing plate 504 for filtering the incoming medium and removing impurities. A box 506 is fixedly installed on the top of the sealing plate 504. A frame 507 extending to the top of the box 506 is fixedly installed between its left and right sides. A push rod 508 extending to the inside of the top of the 507 is slidably installed. A pressure block 509 is fixedly installed on the top of the push rod 508. Two movable plates 510 extending to the bottom of the inner wall of the box 506 are slidably installed between the left and right sides of the inner wall. A telescopic spring 511 fixedly connected to the inner wall of the box 506 is fixedly installed on the opposite sides of the two movable plates 510. A limiting block 512 that engages with the outer cylinder 501 is fixedly installed on one side of the movable plate 510. A connecting rod 513 is fixedly installed on the opposite sides of the two movable plates 510. A wedge block 514 that is slidably connected to the bottom wall of the inner wall of the box 506 is fixedly installed on the opposite sides of the two connecting rods 513. A trapezoidal block 515 that is slidably connected to the two wedge blocks 514 is fixedly installed at the bottom of the push rod 508. The trapezoidal block 515 can be moved by moving up and down, thereby pushing the wedge block 514 and the movable plate 510 to move.

[0037] The inner top wall of the outer cylinder 501 is provided with an installation hole that matches the sealing plate 504. The inner top wall of the filter box 502 is provided with a rectangular through hole that matches the sealing plate 504. The front and rear sides of the outer cylinder 501 are provided with rectangular slots that match the locking block 512. The inner bottom wall of the box body 506 is provided with a strip hole that matches the moving trajectory of the moving plate 510.

[0038] The mounting mechanism 6 includes a base box 61. Two base boxes 61 are fixedly installed on the top left and right ends of the base plate 1. A limit frame 62 is fixedly installed on the inner bottom wall of the box 61 to provide sliding guidance for the U-shaped plate 63 and ensure the stable movement of the U-shaped plate 63. A U-shaped plate 63 extending to its top is slidably installed on the inner side of the limit frame 62. A movable cylinder 64 that is slidably connected to the inner wall of the base box 61 is fixedly installed on the top of the U-shaped plate 63. A return spring 65 that is fixedly connected to the inner wall of the base box 61 is fixedly installed on the inner side of the movable cylinder 64. A pull rod 66 extending to the outside of the base box 61 is fixedly installed between the top and bottom of the movable cylinder 64 to facilitate the operator to pull the movable cylinder 64.

[0039] The protective mechanism 7 includes a protective cover 71. The protective cover 71 is movably installed on the top of the base plate 1 between the left and right bottom boxes 61. It is used to protect internal components such as the heat exchanger assembly 3 and prevent them from being damaged by the external environment. Two right-angle plates 72 are fixedly installed on the left and right sides of the protective cover 71. One end of the right-angle plate 72 extends to the inside of the bottom box 61 and is fixedly installed with a triangular block 73 that fits against the bottom of the moving cylinder 64. When the protective cover 71 is installed, it can be moved by squeezing the moving cylinder 64 to fix the protective cover 71.

[0040] During use, inspect all components of the plate heat exchanger for damage, including the base plate 1, fixing assembly 2, heat exchanger assembly 3, mounting assembly 4, filter mechanism 5, mounting mechanism 6, and protective mechanism 7. Clean the installation site to ensure the installation position is flat, stable, and has sufficient space for operation and maintenance. Place the first clamping plate 31 and the second clamping plate 32 on the right and left mounting brackets 25 respectively, ensuring that the groove of the mounting bracket 25 fits well with the bottom of the clamping plate. Install the heat exchange fins 33 between the first clamping plate 31 and the second clamping plate 32, determining the number and arrangement of the heat exchange fins 33 according to design requirements. Connect the water pipe 34 to the first clamping plate 31, ensuring a secure and well-sealed connection. Use the mounting assembly 4 to fix the first clamping plate 31. Tightening plate 31 and second pressing plate 32, install U-shaped frame 41 at the top front and rear ends of the pressing plate, fix the right side U-shaped frame 41 on the first pressing plate 31 through fixing seat 42, rotate knob 48 to move threaded block 46 on threaded rod 45, drive limit seat 47 to engage with second pressing plate 32, adjust the pressure between pressing plates to make heat exchange fins 33 fit tightly, fix outer cylinder 501 on the right side of first pressing plate 31, so that one end of water pipe 34 extends to the inside of filter box 502, insert sealing plate 504 into the mounting hole of outer cylinder 501 and rectangular through hole of filter box 502, so that filter element 505 is located in filter box 502, press down pressing block 509, push rod 508 drives trapezoidal block 515 to move downward. Pushing the two wedge blocks 514 to move to both sides, the wedge blocks 514 drive the moving plate 510 to move to both sides via the connecting rod 513. After being released, the limiting block 512 is locked into the rectangular slot of the outer cylinder 501, thereby fixing the sealing plate 504 and the filter element 505. The protective cover 71 is placed on the base plate 1, and the triangular block 73 at one end of the right angle plate 72 is inserted into the bottom box 61. The moving cylinder 64 is pushed to move. When the triangular block 73 is fully inserted, the return spring 65 resets the moving cylinder 64, locking the triangular block 73, thereby fixing the protective cover 71. Before operation, check whether all connections are firm and whether there is any leakage. Check whether the filter element 505 of the filter mechanism 5 is installed correctly, whether the filter box 502 is sealed well, and whether the protective mechanism 7 is installed. To ensure stability and protective function, the fluid containing residual heat is connected to water pipe 34, while the cold fluid requiring heating is connected to another water pipe 34 of the heat exchanger. The fluid transport equipment is started to circulate the fluid within the heat exchanger for heat exchange. The operating parameters of the heat exchanger, such as inlet and outlet temperatures and pressures, are monitored to ensure normal operation of the equipment. The filter element 505 of the filter mechanism 5 is checked regularly. When the filter element 505 is clogged or damaged, the sealing plate 504 is disassembled in reverse order of installation, and the filter element 505 is replaced. The heat exchange plates 33 of the heat exchanger assembly 3 are checked regularly. If there is dirt accumulation, they are cleaned or replaced. The integrity of components such as the fixing assembly 2, mounting assembly 4, mounting mechanism 6, and protective mechanism 7 is checked. If any damage is found, it is repaired or replaced in a timely manner.

[0041] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0042] In summary, this plate heat exchanger for waste heat recovery in a distillation column, by incorporating a filtration mechanism 5 located at the inlet end of the water pipe 34, ensures that the fluid flowing from the water pipe 34 into the heat exchanger first passes through a filter box 502. A filter element 505 is installed inside the filter box 502. As the fluid flows through the filter element 505, impurities and particles are intercepted, ensuring the cleanliness of the fluid entering the heat exchanger and preventing impurities from clogging the flow channels of the heat exchange plates 33, thus affecting heat exchange efficiency and normal equipment operation. To prevent clogging during long-term use, the filter element 505 can be... 05. Disassembly and cleaning: Press down the pressure block 509, and the push rod 508 drives the trapezoidal block 515 downward, pushing the two wedge blocks 514 to move to both sides. The wedge blocks 514 drive the moving plate 510 to move to both sides through the connecting rod 513, so that the limiting block 512 is released from the fixation between it and the outer cylinder 501, thereby disassembling the sealing plate 504 and the filter element 505 for easy cleaning. This achieves the purpose of having a filter structure. By setting the installation mechanism 6 and the protective mechanism 7, the base box 61, the limiting frame 62, the U-shaped plate 63, the moving cylinder 64, the return spring 65, and the pull... Rod 66 forms the installation mechanism. Return spring 65 provides elasticity to the moving cylinder 64. When the triangular block 73 of the protective mechanism 7 is inserted into the base box 61, it pushes the moving cylinder 64 to move, compressing the return spring 65. When the protective mechanism 7 needs to be disassembled, pull rod 66, causing the moving cylinder 64 to move and the triangular block 73 to lose its support, thus allowing the protective mechanism 7 to be removed for easy maintenance and repair of the heat exchanger. The protective cover 71 protects the heat exchanger assembly 3 from external impacts, dust, etc., preventing damage. Right-angle plate 72 and triangular... Block 73 cooperates with the installation mechanism 6 to achieve quick installation and removal of the protective cover 71, thus realizing the purpose of having a protective structure. This solves the problem that without a filter structure, the waste heat medium entering the plate heat exchanger cannot be effectively filtered. The accumulation of impurities carried by the waste heat medium entering the heat exchanger will cause blockage inside the plate heat exchanger, thereby affecting the heat exchange efficiency and making it unsuitable for use. In addition, the heat exchanger is exposed to the air for a long time without a protective structure. Over time, dust will accumulate, and it is also easily impacted by external factors, affecting the use of the heat exchanger.

[0043] 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0044] 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 plate heat exchanger for waste heat recovery in a distillation column, comprising a base plate (1), a fixing assembly (2) extending to the top of the base plate (1) is provided on the inner side of the base plate (1), a heat exchanger assembly (3) is provided on the top of the fixing assembly (2), and mounting assemblies (4) are provided on both the front and rear sides of the heat exchanger assembly (3), characterized in that: A filter mechanism (5) is provided on the right side of the heat exchanger assembly (3), and an installation mechanism (6) is provided on both the left and right sides of the top of the base plate (1). A protective mechanism (7) is provided on the top of the base plate (1) located outside the heat exchanger assembly (3) and extending to the inside of the installation mechanism (6). The fixing component (2) includes a slot (21). Two slots (21) are provided on both the front and rear sides of the base plate (1). A stabilizing plate (22) is fixedly installed on the inner side of the slot (21). A movable block (23) extending to the top of the base plate (1) is movably installed on the inner side of the slot (21). A U-shaped rod (24) is fixedly installed on the top of the movable block (23). A card seat (25) is fixedly installed on the top of the movable block (23). A fixing spring (26) located inside the slot (21) is fixedly installed between the movable block (23) and the stabilizing plate (22).

2. A plate heat exchanger for waste heat recovery in a distillation column according to claim 1, characterized in that: The heat exchanger assembly (3) includes a first clamping plate (31), a first clamping plate (31) extending to the top of the two right-side brackets (25) is movably installed between the inner sides of the two left-side brackets (25), a second clamping plate (32) extending to the top of the two left-side brackets (25) is movably installed between the first clamping plate (31) and the second clamping plate (32), and a water pipe (34) extending to the inner side of the heat exchange plate (33) is fixedly installed on the right side of the first clamping plate (31).

3. A plate heat exchanger for waste heat recovery in a distillation column according to claim 2, characterized in that: The mounting assembly (4) includes a U-shaped frame (41). The first clamping plate (31) and the second clamping plate (31) are movably mounted on both the front and rear ends of the top of the U-shaped frame (41). A fixing seat (42) fitted onto the outside of the first clamping plate (31) is fixedly mounted on the bottom of the right-side U-shaped frame (41). A connecting plate (43) extending to the front of the second clamping plate (32) is fixedly mounted on the front side of the fixing seat (42). The top of the connecting plate (43) has an opening located on the second clamping plate (32). The rectangular groove (44) on the front side has a threaded rod (45) extending to the left side of the connecting plate (43) rotatably connected to the right side of the inner wall of the rectangular groove (44). The outer side of the threaded rod (45) is threadedly connected to a threaded block (46) that slides with the inner wall of the rectangular groove (44) and extends to the rear side of the connecting plate (43). The rear side of the threaded block (46) is fixedly installed with a limiting seat (47) that engages with the outer side of the second pressing plate (32). A knob (48) is fixedly installed at one end of the left side of the threaded rod (45).

4. A plate heat exchanger for waste heat recovery in a distillation column according to claim 2, characterized in that: The filtration mechanism (5) includes an outer cylinder (501). The outer cylinder (501) located outside the water pipe (34) is fixedly installed on the right side of the first clamping plate (31). A filter box (502) is fixedly installed on the inner side of the outer cylinder (501). One end of the water pipe (34) extends to the inner side of the filter box (502). A connecting pipe (503) extending to the right side of the outer cylinder (501) is fixedly installed on the right side of the inner wall of the filter box (502). A sealing plate (504) extending to the inner side of the filter box (502) is movably installed on the top of the outer cylinder (501). A filter element (505) located inside the filter box (502) is fixedly installed on the bottom of the sealing plate (504). A box body (506) is fixedly installed on the top of the sealing plate (504). A frame (507) extending to the top of the box body (506) is fixedly installed between the left and right sides of the box body (506). A push rod (508) extending to the inner side is slidably installed on the top of the 07), and a pressure block (509) is fixedly installed on the top of the push rod (508). Two movable plates (510) extending to the bottom are slidably installed between the left and right sides of the inner wall of the box (506). A telescopic spring (511) fixedly connected to the inner wall of the box (506) is fixedly installed on the opposite sides of the two movable plates (510). A limiting block (512) that engages with the outer cylinder (501) is fixedly installed on one side of the movable plate (510). A connecting rod (513) is fixedly installed on the opposite sides of the two movable plates (510). A wedge block (514) slidably connected to the inner bottom wall of the box (506) is fixedly installed on the opposite sides of the two connecting rods (513). A trapezoidal block (515) slidably connected to the two wedge blocks (514) is fixedly installed at the bottom of the push rod (508).

5. A plate heat exchanger for waste heat recovery in a distillation column according to claim 1, characterized in that: The installation mechanism (6) includes a base box (61). Two base boxes (61) are fixedly installed on the top left and right ends of the base plate (1). A limit frame (62) is fixedly installed on the inner bottom wall of the box body (61). A U-shaped plate (63) extending to the top of the limit frame (62) is slidably installed on the inner side of the limit frame (62). A movable cylinder (64) slidably connected to the inner wall of the base box (61) is fixedly installed on the top of the U-shaped plate (63). A return spring (65) fixedly connected to the inner wall of the base box (61) is fixedly installed on the inner side of the movable cylinder (64). A pull rod (66) extending to the outside of the base box (61) is fixedly installed between the top and bottom of the movable cylinder (64).

6. A plate heat exchanger for waste heat recovery in a distillation column according to claim 5, characterized in that: The protective mechanism (7) includes a protective cover (71). The top of the base plate (1) is movably installed with a protective cover (71) located between the left and right bottom boxes (61). Two right-angle plates (72) are fixedly installed on both the left and right sides of the protective cover (71). One end of the right-angle plate (72) extends to the inside of the bottom box (61) and is fixedly installed with a triangular block (73) that fits against the bottom of the movable cylinder (64).

7. A plate heat exchanger for waste heat recovery in a distillation column according to claim 6, characterized in that: The bottom of the triangular block (72) is inclined, the top of the moving cylinder (64) is inclined, the inner top wall of the bottom box (61) is open, a limiting hole adapted to the pull rod (66) is provided on one side of the inner wall of the bottom box (61), the pull rod (66) is U-shaped, and the inner bottom wall of the protective cover (71) is open.

8. A plate heat exchanger for waste heat recovery in a distillation column according to claim 4, characterized in that: The inner top wall of the outer cylinder (501) is provided with an installation hole that matches the sealing plate (504), the inner top wall of the filter box (502) is provided with a rectangular through hole that matches the sealing plate (504), the front and rear sides of the outer cylinder (501) are provided with rectangular slots that match the locking block (512), and the inner bottom wall of the box body (506) is provided with a strip hole that matches the moving trajectory of the moving plate (510).

9. A plate heat exchanger for waste heat recovery in a distillation column according to claim 3, characterized in that: The outer side of the U-shaped rod (24) is covered with a sponge sleeve, and the inner side of the card seat (25) is provided with a groove. The card seats (25) on the front and rear sides are symmetrically distributed. One side of the connecting plate (43) is provided with a strip hole that matches the movement trajectory of the threaded block (46). The strip hole is connected to the inner wall of one side of the rectangular groove (44).

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