Corrosion resistant shell and tube heat exchanger

Abstract

The utility model discloses a kind of corrosion-resistant tube-shell heat exchangers, it relates to heat exchanger technical field, including heat exchanger body, the side fixed mounting of heat exchanger has end cover, the rear end fixed mounting of the side of end cover has drain pipe, the front end fixed mounting of the side of end cover has water inlet pipe.The utility model adopts above-mentioned structure, it is directly contacted medium by setting end cover and the corrosion-resistant rubber layer of heat exchanger body inside, anti-seawater scouring and prevent marine bioabsorption, avoid corrosion perforation;Filter screen of filter mechanism and waste residue collecting hopper intercept impurities and receive waste residue, prevent internal damage;Supporting leg and mounting chassis firm device and reduce bottom corrosion, to achieve double anticorrosion, intercept impurities, prolong life's effect, solve the problem that heat exchanger is easily corroded in prior art, water inlet pipe lacks anti-blocking structure.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchanger technology, and specifically relates to a corrosion-resistant shell-and-tube heat exchanger. Background Technology

[0002] In marine power plants, auxiliary equipment, and daily life systems, heat exchangers are key devices for heat transfer, and their operational stability directly affects the overall operating condition of the ship. Since ships are in the marine environment for a long time, the end caps of heat exchangers need to be in continuous contact with seawater. The corrosiveness of seawater and the adsorption and derivation characteristics of marine organisms have become the core issues affecting the service life of heat exchangers. Initially, the industry often used ordinary tar epoxy paint to coat the inner surface of the heat exchanger end cap for corrosion protection. However, this coating is prone to damage and peeling under the long-term scouring of seawater and the continuous adsorption and derivation of marine organisms. To improve this problem, existing heat exchangers further equip the end cap with anti-corrosion zinc rods. Although this can slow down the corrosion of the end cap by seawater and marine organisms to a certain extent, it cannot prevent seawater from penetrating into the end cap due to coating damage. After long-term use, it will still cause corrosion perforation of the end cap, affecting the normal operation of the heat exchanger.

[0003] Chinese patent CN202304556U discloses a corrosion-resistant shell-and-tube heat exchanger. This technology effectively solves the problem of seawater and marine organisms easily corroding the inner surface of the end caps by replacing the traditional paint coating and copper end caps with a 3mm-6mm thick rubber layer on the inner surface of the end caps. This not only extends the service life of the heat exchanger but also significantly reduces manufacturing costs, showing certain application value in the field of marine heat exchangers. However, from the perspective of practical application scenarios, the overall structure of this patented technology still has obvious limitations: it does not include an anti-clogging filter at the water inlet pipe of the heat exchanger. In terms of structure, when seawater or other media enter the equipment through the inlet pipe, the silt and impurities carried in the water will directly enter the heat exchanger and adhere to the surface of the heat exchange components, affecting the heat exchange efficiency. At the same time, plankton and microorganisms in the water will also enter with the water flow, proliferate inside the heat exchanger, further aggravating the corrosion and damage of the heat exchange components and end caps, shortening the equipment maintenance cycle and overall lifespan, making it difficult to meet the requirements for long-term stable operation of marine heat exchangers. It is evident that existing marine heat exchangers, in addition to corrosion prevention, still need to be improved in design to address the problem of inlet pipe clogging and filtration in order to fill the technological gap. Utility Model Content

[0004] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a corrosion-resistant shell-and-tube heat exchanger to solve the problems raised in the background art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A corrosion-resistant shell-and-tube heat exchanger includes a heat exchanger body, an end cap fixedly installed on one side of the heat exchanger, a drain pipe fixedly installed at the rear end of one side of the end cap, a water inlet pipe fixedly installed at the front end of one side of the end cap, a filter mechanism fixedly installed at the outer end of the water inlet pipe, and corrosion-resistant rubber layers fixedly connected to the inner side of the end cap and the inner side of the heat exchanger body.

[0007] The filtration mechanism includes a filter box, which is fixedly installed at the outer end of the water inlet pipe. A filter assembly is provided in the middle of the filter box, and an installation assembly is fixedly installed on the top of the filter assembly. The filter assembly is installed inside the filter box through the installation assembly.

[0008] As a preferred technical solution, the filter assembly includes a mounting groove, which is located in the middle of the filter box. A frame is slidably connected inside the mounting groove. A filter screen is fixedly installed in the middle of the frame. A sealing cover is fixedly installed on the top of the frame. The mounting assembly is fixedly installed on the top of the sealing cover, and the sealing cover covers the top of the mounting groove.

[0009] As a preferred technical solution, a waste collection hopper is fixedly connected to the bottom of the frame, and the waste collection hopper is located below the filter screen.

[0010] As a preferred technical solution, the mounting assembly includes a top frame and locking holes. The top frame is fixedly installed on the top of the sealing plate. Limiting springs are fixedly connected to both ends of the top frame. A slider is fixedly installed on the outer end of the limiting spring. The slider is slidably connected to both ends of the top frame. A limiting arm is fixedly installed on the outer side of the slider. The inner end of the limiting arm slides between both ends of the top frame. A locking pin is fixedly connected to the outer end of the limiting arm. The locking holes are opened on both upper sides of the filter box. The end of the locking pin is inserted into the inner side of the locking hole.

[0011] As a preferred technical solution, an adjusting arm is fixedly connected to the top of the slider, the side of the adjusting arm is L-shaped, and an adjusting block is rotatably connected to the top center of the top frame, with the two sides of the adjusting block and the inner end of the adjusting arm being connected by transmission.

[0012] As a preferred technical solution, the top view of the adjustment block is elliptical, the inner end of the adjustment arm is arc-shaped, and the top of the adjustment block is fixedly connected to a detachable and twistable handle.

[0013] As a preferred technical solution, mounting rings are fixedly installed at both ends of the outer surface of the heat exchanger body, support legs are fixedly installed on both sides of the bottom of the mounting rings, and mounting bases are fixedly installed at the bottom of the support legs. Mounting holes are provided at the four corners of the mounting bases.

[0014] In summary, the present invention has the following main advantages:

[0015] Firstly, during the application of this technical solution, by setting corrosion-resistant rubber layers on the inner side of the end cap and the inner side of the heat exchanger body, and a filtration mechanism at the outer end of the water inlet pipe, the corrosion-resistant rubber layer allows direct contact with the medium during use, resisting seawater erosion and preventing the adsorption of marine organisms, thus preventing seawater penetration and corrosion perforation; the filter screen and waste collection hopper of the filtration mechanism can intercept mud and sand and impurities in the water and collect waste residue during use, preventing impurities from entering the interior and aggravating corrosion; at the same time, the support legs and mounting base can stably install the device during use and reduce the risk of bottom corrosion, thereby achieving the effects of double corrosion prevention, interception of impurities, and extension of device life, solving the problems in the prior art where the heat exchanger end cap and body are easily corroded by seawater and marine organisms, and the lack of anti-clogging filtration structure in the water inlet pipe leads to internal damage;

[0016] Secondly, during the application of this technical solution, by setting up installation components and disassembly / removal levers for the filter assembly, the rotation of the adjustment block allows the adjustment arm to be pushed outward during use, pulling up the spring and causing the locking pin to disengage for disassembly and assembly of the filter assembly. After the adjustment block is released, the spring returns to its original position, which locks the locking pin in place. The entire process does not require disassembly of the inlet pipe or filter box, making it convenient to clean the filter screen and waste collection hopper during use. This simplifies the maintenance of the filter assembly, saves maintenance time, and ensures the continuous operation of the filter mechanism. It solves the problem in the existing technology that the maintenance of the filter structure requires extensive disassembly, which is time-consuming and labor-intensive, affecting the continuous and stable operation of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the filter mechanism structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the filter mechanism of this utility model in a disassembled state.

[0021] Figure 5 This is a schematic diagram of the corrosion-resistant rubber layer structure of this utility model.

[0022] Reference numerals: 1. Heat exchanger body; 2. End cap; 3. Drain pipe; 4. Inlet pipe; 5. Corrosion-resistant rubber layer; 6. Filtration mechanism; 61. Filter box; 62. Filter assembly; 621. Mounting groove; 622. Frame; 623. Filter screen; 624. Sealing cover; 625. Waste collection hopper; 63. Mounting assembly; 631. Top frame; 632. Locking hole; 633. Limiting spring; 634. Slider; 635. Limiting arm; 636. Locking pin; 637. Adjusting arm; 638. Adjusting block; 639. Disassembly and assembly twisting handle; 7. Mounting ring; 8. Support leg; 9. Mounting base; 10. Mounting hole. Detailed Implementation

[0023] Example

[0024] refer to Figures 1 to 5 The corrosion-resistant shell-and-tube heat exchanger described in this embodiment includes a heat exchanger body 1, an end cap 2 fixedly installed on one side of the heat exchanger, a drain pipe 3 fixedly installed at the rear end of one side of the end cap 2, a water inlet pipe 4 fixedly installed at the front end of one side of the end cap 2, a filter mechanism 6 fixedly installed at the outer end of the water inlet pipe 4, and a corrosion-resistant rubber layer 5 fixedly connected to both the inner side of the end cap 2 and the inner side of the heat exchanger body 1.

[0025] The filtration mechanism 6 includes a filter box 61, which is fixedly installed at the outer end of the inlet pipe 4. A filter assembly 62 is located in the middle of the filter box 61, and an installation assembly 63 is fixedly installed on the top of the filter assembly 62. The filter assembly 62 is installed inside the filter box 61 via the installation assembly 63. A water pipe is located on the outer side of the filter box 61 to assist in pouring water into the filter box 61. During operation, the device first receives seawater or other media to be heat-exchanged through the inlet pipe 4. Before entering the inlet pipe 4, the media must first flow through the filtration mechanism 6 at the outer end. The filter box 61 of the filtration mechanism 6 provides installation and protection space for the internal filter assembly 62, preventing the filter assembly 62 from being directly exposed to external damage. The filter assembly 62 filters the media in the middle of the filter box 61, intercepting sediment, impurities, and plankton carried in the media, preventing these substances from entering the device with the media, avoiding impurities adhering to the surface of the heat exchange components and affecting heat exchange efficiency, or biological growth inside exacerbating corrosion. Simultaneously, the filter assembly 62, through the top... The installation component 63 is stably installed inside the filter box 61, ensuring that it will not shift due to media impact during the filtration process and guaranteeing a continuous and stable filtration effect. The filtered media enters the end cover 2 through the inlet pipe 4 and then flows into the heat exchanger body 1 to complete heat transfer. During this process, the corrosion-resistant rubber layer 5 on the inner side of the end cover 2 and the inner side of the heat exchanger body 1 is in direct contact with the media. This rubber layer can resist the long-term scouring of seawater, preventing the media from directly corroding the end cover 2 and the inner metal wall of the body, while preventing marine organisms from adsorbing and multiplying on the wall surface, reducing the problem of increased corrosion and decreased heat exchange efficiency caused by biological attachment. The media that has completed heat exchange is discharged through the drain pipe 3 at the rear end of one side of the end cover 2, ensuring that the media forms a stable flow circulation inside the device. Throughout the entire operation, the filtration mechanism 6 and the corrosion-resistant rubber layer 5 work together to ensure the cleanliness of the media entering the device and block the corrosion path of the media to the inside of the device, effectively extending the service life of the device and solving the problem of easy damage to the device due to impurities and media corrosion in the prior art.

[0026] refer to Figures 1-4The filter assembly 62 includes a mounting groove 621 located in the middle of the filter box 61. A frame 622 is slidably connected inside the mounting groove 621. A filter screen 623 is fixedly installed in the middle of the frame 622. A sealing cover 624 is fixedly installed on the top of the frame 622. The mounting assembly 63 is fixedly installed on the top of the sealing cover 624, which covers the top of the mounting groove 621. A waste collection hopper 625 is fixedly connected to the bottom of the frame 622, positioned below the filter screen 623. During operation, this device filters media... Before filtration, the filter assembly 62 is installed into the filter box 61. The frame 622 is guided to slide along the mounting groove 621 in the middle of the filter box 61, ensuring its stable embedding inside. This ensures precise installation of the filter assembly 62 and prevents subsequent media impact from causing the frame 622 to shift and affect the filtration effect. The filter screen 623 in the middle of the frame 622 can directly contact the incoming seawater or other media, intercepting silt, impurities, and plankton in the media. This prevents these substances from entering the heat exchanger body 1 with the media, avoiding impurities adhering to the surface of the heat exchange components and reducing heat exchange efficiency, or biological contamination. Internal corrosion is exacerbated; meanwhile, the waste collection hopper 625 at the bottom of the frame 622 is located below the filter screen 623, which can collect the waste intercepted by the filter screen 623, preventing the waste from accumulating and clogging the filter screen 623 in the filter box 61, ensuring that the medium can continuously and smoothly pass through the filter assembly 62 and maintain a stable filtration efficiency. The sealing cover 624 at the top of the frame 622 covers the top of the mounting groove 621 at the same time as the frame 622 is installed, which can effectively prevent the medium from leaking from the gap between the mounting groove 621 and the frame 622, preventing unfiltered medium from directly entering the water inlet pipe 4, and ensuring that all medium entering the device is filtered. The mounting component 63 is fixed to the top of the sealing cover 624, which can stably fix the sealing cover 624 and the frame 622 in the filter box 61, further preventing the filter component 62 from loosening or shifting under the impact of the medium. During the entire filtration process, the mounting groove 621, frame 622, filter screen 623, waste collection hopper 625 and sealing cover 624 work together to achieve efficient filtration of the medium and collection of waste, and to ensure the sealing and stability of the filtration process. This provides a clean medium environment for the long-term stable operation of the heat exchanger body 1, and solves the problem of impurities entering and the device being easily damaged due to imperfect filtration structure in the prior art.

[0027] refer to Figures 3-4The mounting assembly 63 includes a top frame 631 and a locking hole 632. The top frame 631 is fixedly mounted on the top of the sealing plate. Limit springs 633 are fixedly connected to both ends of the top frame 631. A slider 634 is fixedly mounted to the outer end of each limit spring 633. The slider 634 is slidably connected to both ends of the top frame 631. A limit arm 635 is fixedly mounted to the outer side of the slider 634. The inner end of the limit arm 635 slides within both ends of the top frame 631. A locking pin 636 is fixedly connected to the outer end of the limit arm 635. The locking holes 632 are located on the upper sides of both sides of the filter box 61. The end of the locking pin 636 is inserted into the inner side of the locking hole 632. An adjusting arm 637 is fixedly connected to the top of the slider 634. The side of the arm 637 is L-shaped. An adjusting block 638 is rotatably connected to the top center of the top frame 631. The two sides of the adjusting block 638 are connected to the inner end of the adjusting arm 637. During the application of this device, when installing the filter assembly 62, the installation assembly 63 is used to stably fix the filter assembly 62 to the filter box 61. The top frame 631 provides the mounting base for the internal components. When the frame 622 is inserted into the mounting slot 621 of the filter box 61, the limiting springs 633 at both ends of the top frame 631 will naturally release their elasticity, pushing the slider 634 to slide along the inside of the top frame 631. The slider 634 drives the outer limiting arm 635 to move synchronously, allowing the locking pin 636 at the outer end of the limiting arm 635 to accurately insert into the locking holes 6 at the upper ends of both sides of the filter box 61. Within 62, the locking pin 636 and the locking hole 632 securely lock the sealing cover 624, frame 622, and filter box 61, preventing the filter assembly 62 from loosening or shifting due to impact during media flow, thus ensuring the stability of the filtration process. When the filter assembly 62 needs to be disassembled for maintenance, the adjusting block 638 in the middle of the top of the top frame 631 is rotated. The two sides of the adjusting block 638 are connected to the inner ends of the adjusting arms 637. As the adjusting block 638 rotates, it will generate a thrust on the adjusting arms 637 on both sides. Because the adjusting arms 637 are L-shaped, they will drive the top-connected slider 634 to slide inwards towards the top frame 631. The slider 634 compresses the limiting spring 633 and drives the limiting arm 635 to move synchronously, causing the locking pin 636 to disengage from the locking hole 632. At this time, The top frame 631 can be pulled upwards to remove the sealing cover 624 and frame 622 from the mounting slot 621, completing the disassembly of the filter assembly 62. When reinstalling after maintenance, simply rotate the adjusting block 638 again to retract the locking pin 636, insert the frame 622 into the mounting slot 621, and then release the adjusting block 638. The limit spring 633 will reset and push the slider 634 and locking pin 636 back into the locking hole 632, achieving quick fixation. The entire process does not require additional tools. Through the coordination of the adjusting block 638, adjusting arm 637, and limit spring 633, the disassembly and assembly of the filter assembly 62 are simplified, and the stability after installation is ensured. This solves the problems of cumbersome disassembly and assembly and poor fixation reliability of existing filter structures, ensuring the long-term efficient operation of the filter mechanism 6.

[0028] refer to Figures 3-4 The adjusting block 638 has an elliptical shape when viewed from above, and the inner end of the adjusting arm 637 is arc-shaped. A disassembly / removal twisting handle 639 is fixedly connected to the top of the adjusting block 638. Mounting rings 7 are fixedly installed at both ends of the outer surface of the heat exchanger body 1. Support legs 8 are fixedly installed on both sides of the bottom of the mounting rings 7. A mounting base 9 is fixedly installed at the bottom of the support legs 8. Mounting holes 10 are provided at the four corners of the mounting base 9. During the application of this device, when disassembling or assembling the filter assembly 62, the operator can easily move the adjusting block 638 to the top of the mounting base 638 by rotating the disassembly / removal twisting handle 639 on the top of the adjusting block 638. The top rotation and disassembly / twisting handle 639 provides a convenient force application point for the adjusting block 638, avoiding slippage when directly rotating the adjusting block 638 and reducing the difficulty of operation. Since the adjusting block 638 is elliptical in top view and the inner end of the adjusting arm 637 is arc-shaped, when the elliptical adjusting block 638 rotates, its arc-shaped side can form a smooth transmission contact with the arc-shaped inner end of the adjusting arm 637, reducing frictional loss between them. At the same time, it ensures that the pushing force of the adjusting block 638 on the adjusting arm 637 is evenly transmitted, avoiding uneven force on the adjusting arm 637 that could cause jamming. As the adjusting block 638 rotates, the two adjusting arms 637 on both sides are simultaneously pushed towards the inside of the top frame 631, bringing... The sliding block 634 compresses the limiting spring 633, thereby causing the locking pin 636 to disengage from the locking hole 632 of the filter box 61, thus enabling the disassembly of the filter assembly 62. During installation, the operation is reversed: after loosening the disassembly / removal handle 639, the limiting spring 633 returns to its original position, pushing the sliding block 634, adjusting arm 637, and locking pin 636 to move. The locking pin 636 then inserts into the locking hole 632 to complete the fixation. The entire process requires no additional tools, improving disassembly and assembly efficiency. Simultaneously, this device achieves overall fixation through the mounting rings 7 at both ends of the outer surface of the heat exchanger body 1, the support legs 8, and the mounting base 9. The mounting rings 7 provide a stable mounting foundation for the support legs 8, and the support legs 8 keep the heat exchanger body 1 in contact with the mounting surface. The spacing is designed to prevent moisture and impurities from directly contacting the bottom of the equipment and causing corrosion. The mounting holes 10 at the four corners of the mounting base 9 can be used with external fasteners to precisely fix the device in the designated position on the ship, preventing the equipment from shifting due to vibration during operation and ensuring the stability of the media transportation, filtration, and heat exchange processes. The structural design of the adjusting block 638 and the disassembly handle simplifies the maintenance of the filter assembly 62. The cooperation between the mounting ring 7, the support leg 8, and the mounting base 9 ensures the overall stability of the equipment. Both of these ensure the reliable operation of the device from the perspectives of component maintenance and overall operation, solving the problems of inconvenient disassembly and assembly of the filter assembly 62 and easy shaking of the equipment after installation in the prior art.

[0029] Operating Principle and Advantages: When using this device, the entire unit is first installed and secured. Mounting rings 7 at both ends of the outer surface of the heat exchanger body 1 provide a stable mounting base for the support legs 8 during use. The bottom of the support legs 8 is connected to a mounting frame 9. After the mounting frame 9 is aligned with the designated installation position on the ship, mounting holes 10 at the four corners of the mounting frame 9 allow external fasteners to pass through, ensuring a secure connection between the device and the ship's structure. The support legs 8 also maintain a certain distance between the heat exchanger body 1 and the mounting surface during use, preventing… To prevent moisture or impurities from directly contacting the bottom of the equipment, the mounting surface is designed to minimize the risk of bottom corrosion. The mounting holes 10 on the mounting base 9 ensure precise installation during use, preventing displacement due to vibration and providing a stable foundation for subsequent media transport and heat exchange. This addresses the potential problem of shaking after installation in existing systems. After installation, the filter mechanism 6 is assembled to achieve media filtration. The mounting groove 621 in the middle of the filter box 61 guides the frame 622 of the filter assembly 62 to slide along the groove during use, thus completing the filtration process. After being fully embedded in the mounting groove 621, the sealing cover 624 on the top of the frame 622 covers the top of the mounting groove 621. By setting the sealing cover 624, leakage of the medium from the gaps in the mounting groove 621 can be prevented during use. At this time, the top frame 631 of the mounting assembly 63 is fixed with the sealing cover 624. By setting the limiting spring 633 in the top frame 631, the slider 634 can be pushed to slide along the inside of the top frame 631 during use. The slider 634 drives the outer limiting arm 635 to move synchronously, thereby enabling it to push the locking pin 636 at the outer end of the limiting arm 635 to insert into the upper ends of both sides of the filter box 61. The 632 slot completes the fixation of the filter assembly 62 to the filter box 61. When seawater or other media enter through the inlet pipe 4, it first flows through the filter screen 623 in the middle of the frame 622 inside the filter box 61. By setting the filter screen 623, the mud and impurities carried in the water can be intercepted during use. By setting the waste sludge collection hopper 625 at the bottom of the frame 622, the filtered waste sludge can be collected during use, thereby preventing impurities from entering the heat exchanger body 1 with the medium. This solves the problem in the prior art that the inlet pipe 4 lacks an anti-clogging filter structure and impurities aggravate internal corrosion.

[0030] After filtration, the medium enters the heat exchanger body 1 and end cap 2. This device features a corrosion-resistant rubber layer 5 on the inner side of the end cap 2 and the heat exchanger body 1, allowing the rubber layer to directly contact the medium during use. Compared to ordinary tar-based epoxy paint in the prior art, this rubber layer has stronger resistance to seawater erosion. Furthermore, the corrosion-resistant rubber layer 5 prevents marine organisms from directly adhering to the inner walls of the end cap 2 and the body during use. Simultaneously, the rubber layer does not rely on zinc rods for corrosion protection. This rubber layer ensures the long-term integrity of the structure during use, preventing seawater from penetrating into the end cap 2 or the body and causing corrosion and perforation. During heat exchange, the medium completes heat transfer inside the heat exchanger body 1 and is then discharged through a drain pipe 3 at the rear end of one side of the end cap 2. The drain pipe 3 guides the smooth discharge of the heat-exchanged medium during use. Throughout the entire operation... The corrosion-resistant rubber layer 5 continuously blocks media corrosion, and the filter mechanism 6 continuously intercepts impurities and organisms. The two work together to extend the service life of the device and solve the problems of limited anti-corrosion effect and easy damage to the internal parts by impurities in the existing technology. When the filter component 62 needs to be installed or maintained and cleaned, the installation and disassembly twist handle 639 on the top of the installation component 63 is rotated first. By setting the disassembly and disassembly twist handle 639, the adjustment block 638 can be rotated on the top of the top frame 631 during use. The adjustment block 638 is elliptical in plan view. Its two sides are in transmission contact with the inner end of the adjustment arm 637. By setting the elliptical adjustment block 638 and the adjustment arm 637, the adjustment block 638 can push the two adjustment arms 637 to move outward when it rotates during use. The adjustment arm 637 drives the top slider 634 to move synchronously, which can pull up the limit spring 633 in the top frame 631.As the limit spring 633 is pulled up, the slider 634 drives the limit arm 635 and the locking pin 636 to move synchronously, causing the locking pin 636 to disengage from the locking hole 632 of the filter box 61. At this time, the frame 622 can be placed into the filter box 61 along the mounting groove 621, completing the initial installation of the filter assembly 62. After installation, the disassembly and assembly twist handle 639 is released. By setting the limit spring 633, the limit spring 633 can quickly reset after losing external force during use. The reset spring pulls the slider 634 to move inward. The slider 634 drives the adjusting arm 637, the limit arm 635 and the locking pin 636 to reset synchronously. The locking pin 636 is reinserted into the locking hole 632 of the filter box 61, realizing the filter assembly 622. When locking and fixing 2, repeat the above operation of disengaging the rotating adjusting block 638 and the locking pin 636, pull up the disassembly and assembly twisting handle 639, and remove the frame 622 from the installation groove 621 through the top frame 631 and the sealing cover 624. Clean the impurities on the surface of the filter screen 623 and the waste residue in the waste residue collection hopper 625. After cleaning, re-fix it according to the installation steps. The whole process does not require disassembling the water inlet pipe 4 or the filter box 61. By setting this disassembly and locking structure, the operation is convenient during use, thereby solving the problem that the existing filter structure requires a lot of disassembly, which is time-consuming and laborious. This ensures that the filter mechanism 6 continues to play a role and further guarantees the long-term stable operation of this device.

[0031] The scope of protection of this application does not involve improvements to the electronic components of the device or equipment. Therefore, the working principles of each electronic component are not described in detail here. The electronic components in this application are all conventional electronic components used in the prior art. They are all conventional technical means in the prior art, and the application of the prior art is very mature. Therefore, they will not be elaborated here.

Claims

1. A corrosion-resistant shell-and-tube heat exchanger, characterized in that: The heat exchanger includes a heat exchanger body (1), an end cap (2) is fixedly installed on one side of the heat exchanger, a drain pipe (3) is fixedly installed on the rear end of one side of the end cap (2), a water inlet pipe (4) is fixedly installed on the front end of one side of the end cap (2), a filter mechanism (6) is fixedly installed on the outer end of the water inlet pipe (4), and a corrosion-resistant rubber layer (5) is fixedly connected to the inner side of the end cap (2) and the inner side of the heat exchanger body (1). The filtration mechanism (6) includes a filter box (61), which is fixedly installed at the outer end of the water inlet pipe (4). A filter assembly (62) is provided in the middle of the filter box (61), and an installation assembly (63) is fixedly installed on the top of the filter assembly (62). The filter assembly (62) is installed inside the filter box (61) through the installation assembly (63).

2. The corrosion-resistant shell-and-tube heat exchanger according to claim 1, characterized in that: The filter assembly (62) includes a mounting groove (621) located in the middle of the filter box (61). A frame (622) is slidably connected inside the mounting groove (621). A filter screen (623) is fixedly installed in the middle of the frame (622). A sealing cover (624) is fixedly installed on the top of the frame (622). The mounting assembly (63) is fixedly installed on the top of the sealing cover (624), and the sealing cover (624) covers the top of the mounting groove (621).

3. A corrosion-resistant shell-and-tube heat exchanger according to claim 2, characterized in that: A waste collection hopper (625) is fixedly connected to the bottom of the frame (622), and the waste collection hopper (625) is located below the filter screen (623).

4. A corrosion-resistant shell-and-tube heat exchanger according to claim 1, characterized in that: The mounting assembly (63) includes a top frame (631) and a locking hole (632). The top frame (631) is fixedly installed on the top of the sealing plate. Limiting springs (633) are fixedly connected to both ends of the top frame (631). A slider (634) is fixedly installed on the outer end of the limiting spring (633). The slider (634) is slidably connected to both ends of the top frame (631). A limiting arm (635) is fixedly installed on the outer side of the slider (634). The inner end of the limiting arm (635) slides on both ends of the top frame (631). A locking pin (636) is fixedly connected to the outer end of the limiting arm (635). The locking hole (632) is opened on both upper ends of the filter box (61). The end of the locking pin (636) is inserted into the inner side of the locking hole (632).

5. A corrosion-resistant shell-and-tube heat exchanger according to claim 4, characterized in that: An adjusting arm (637) is fixedly connected to the top of the slider (634). The side of the adjusting arm (637) is L-shaped. An adjusting block (638) is rotatably connected to the top center of the top frame (631). The two sides of the adjusting block (638) are connected to the inner end of the adjusting arm (637) in a transmission connection.

6. A corrosion-resistant shell-and-tube heat exchanger according to claim 5, characterized in that: The adjusting block (638) is elliptical in top view, the inner end of the adjusting arm (637) is arc-shaped, and a detachable twisting handle (639) is fixedly connected to the top of the adjusting block (638).

7. A corrosion-resistant shell-and-tube heat exchanger according to claim 1, characterized in that: The heat exchanger body (1) has mounting rings (7) fixedly installed at both ends of its outer surface. Support legs (8) are fixedly installed on both sides of the bottom of the mounting rings (7). Mounting base (9) is fixedly installed at the bottom of the support legs (8). Mounting holes (10) are provided at the four corners of the mounting base (9).

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