A high-efficiency recovery device based on waste heat flue gas

Abstract

This utility model discloses a high-efficiency waste heat recovery device based on flue gas, relating to the field of waste heat recovery technology. It includes a main body box, inside which a fixed horizontal plate is fixedly connected. Two fixed vertical plates are symmetrically fixed at the upper end of the horizontal plate. One of the fixed vertical plates has a water inlet at its upper end, and the other has a water outlet at its upper end. Multiple partitions are fixedly connected to the inner sides of both fixed vertical plates. A quick-connect fitting is fixedly connected to the upper end of the main body box, with its lower end penetrating the main body box and connected to a flue gas heat exchange pipe. The other end of the flue gas heat exchange pipe is connected to a flue gas outlet pipe. A water inlet pipe is detachably connected to the top of the main body box. This utility model's high-efficiency waste heat recovery device improves waste heat recovery efficiency through a serpentine heat exchange pipe, staggered partitions, and an insulation layer. It purifies flue gas using a filter screen and activated carbon layer. The snap-fit ​​structure facilitates filter material replacement, and the sealing ring prevents leakage, achieving both energy saving and environmental protection while reducing maintenance difficulty.

Description

Technical Field

[0001] This utility model relates to the field of waste heat flue gas recovery technology, and in particular to a high-efficiency recovery device based on waste heat flue gas. Background Technology

[0002] In industrial production, the operation of a large number of equipment generates high-temperature waste heat flue gas. If this flue gas is directly discharged, it will not only cause a serious waste of thermal energy resources, but also pollute the atmospheric environment due to pollutants such as dust, sulfides, and nitrogen oxides contained in the flue gas, which does not meet the requirements of green production.

[0003] Existing waste heat recovery devices generally suffer from low heat exchange efficiency, insufficient heat exchange area, short contact time between water and flue gas, and large heat loss. Moreover, most lack efficient flue gas purification structures or have inconvenient purification component replacement, resulting in high maintenance costs. They are difficult to balance waste heat recovery efficiency, environmental compliance, and ease of use, which has certain adverse effects on users. In order to overcome the shortcomings of existing technologies, we propose a high-efficiency waste heat recovery device based on flue gas. Utility Model Content

[0004] The main objective of this invention is to provide a high-efficiency recovery device based on waste heat flue gas, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A high-efficiency waste heat recovery device for flue gas includes a main body box. A fixed horizontal plate is fixedly connected inside the main body box, and two fixed vertical plates are symmetrically fixed at the upper end of the horizontal plate. One of the fixed vertical plates has a water inlet at its upper end, and the other has a water outlet at its upper end. Multiple partitions are fixedly connected to the inner sides of both fixed vertical plates. A quick-connect fitting is fixedly connected to the upper end of the main body box, and a flue gas heat exchange tube is connected to the lower end of the quick-connect fitting through the main body box. The other end of the flue gas heat exchange tube is connected to a flue gas outlet pipe. A water inlet pipe is detachably connected to the top of the main body box, and a drain pipe is detachably connected to one side of the main body box. The main body box is fixedly connected to a purification box at the front end. The purification box has a smoke exhaust port at the top and a rectangular opening at the front end. Both sides of the purification box are fixedly connected to plug-in boxes, and one side of the plug-in box has a snap-fit ​​groove. The front of the purification box is provided with a mounting plate. Both the rear end of the mounting plate and the front end of the purification box have rectangular grooves, and a rectangular sealing ring is embedded in the rectangular groove. The rear end of the rectangular sealing ring is detachably connected to a filter screen and an activated carbon layer. Both sides of the mounting plate are fixedly connected to plug-in blocks. A spring is detachably connected inside the plug-in block. The other end of the spring abuts against a limit plate, and a snap-fit ​​block is fixedly connected to one side of the limit plate.

[0006] Preferably, the flue gas heat exchange tube has a serpentine bend structure, and multiple heat dissipation fins are evenly distributed on the outer wall of the flue gas heat exchange tube, and the heat dissipation fins and the flue gas heat exchange tube are integrally formed.

[0007] Preferably, the partitions on the inner sides of the two fixed uprights are staggered, and the height of the partitions is the same as the height of the fixed uprights. A predetermined distance is provided between the end of the partition away from the fixed upright and the other fixed upright.

[0008] Preferably, one side of the snap-fit ​​block is inclined, the snap-fit ​​block and the snap-fit ​​groove are interference fit, the length of the snap-fit ​​block is greater than the depth of the snap-fit ​​groove, and the snap-fit ​​block extends to the outside of the snap-fit ​​groove by an appropriate length. The width of the plug-in block is consistent with the internal width of the plug-in box, and the depth to which the plug-in block is inserted into the plug-in box is most of its total length.

[0009] Preferably, an insulation layer is fixedly provided on the inner wall of the main body box. The insulation layer is made of aluminum silicate cotton, and the outer wall of the insulation layer is tightly attached to the inner wall of the main body box. The end of the flue gas outlet pipe away from the flue gas heat exchange pipe passes through the side wall of the purification box and extends into the interior of the purification box. The end of the flue gas outlet pipe located inside the purification box is set towards the filter screen.

[0010] Compared with the prior art, the present invention has the following beneficial effects: This high-efficiency waste heat recovery device, by designing the flue gas heat exchange tubes with a serpentine bend structure and integrally forming multiple heat dissipation fins on their outer wall, significantly increases the contact heat exchange area between the waste heat flue gas and the water in the main tank, providing sufficient conditions for heat transfer. At the same time, the staggered baffles on the inner side of the fixed upright plate guide the water to form a meandering flow path in the main tank, extending the contact time between the water and the flue gas heat exchange tubes and ensuring sufficient heat exchange. In addition, the aluminum silicate cotton insulation layer on the inner wall of the main tank effectively reduces the heat loss from the tank to the outside, avoiding heat loss. The synergistic effect of the above structures significantly improves the waste heat recovery efficiency, efficiently utilizes the heat energy in the flue gas to convert it into usable hot water, reduces energy waste, improves resource utilization, and meets the demand for hot water energy in actual production and daily life.

[0011] This high-efficiency waste heat recovery device features a filter screen and activated carbon layer arranged sequentially within the purification chamber. These elements physically filter particulate impurities in the flue gas after heat exchange and adsorb and purify harmful gases and odors, effectively removing pollutants and ensuring that the flue gas discharged from the exhaust port meets environmental emission standards, thus reducing pollution to the surrounding environment. The mounting plate connects to the purification chamber's connector box via plug-in blocks on both sides. With the help of springs, limit plates, and snap-fit ​​blocks, pressing the snap-fit ​​blocks disengages them from the snap-fit ​​slots, allowing for quick disassembly of the mounting plate and facilitating timely replacement of the filter screen and activated carbon layer. Furthermore, the rectangular sealing ring ensures a tight seal between the mounting plate and the purification chamber, preventing flue gas leakage. This design not only guarantees effective flue gas purification but also reduces the difficulty and cost of subsequent maintenance, enhancing the ease of use of the device. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the main body box of this utility model; Figure 3 This is a schematic diagram of the purification box structure of this utility model; Figure 4 This is a partial structural schematic diagram of the present invention; Figure 5 This is a schematic diagram of the internal structure of the plug block of this utility model.

[0013] In the diagram: 1. Main body box; 2. Fixed horizontal plate; 3. Fixed vertical plate; 4. Water inlet notch; 5. Water outlet notch; 6. Partition plate; 7. Quick connector; 8. Flue gas heat exchange tube; 9. Flue gas outlet pipe; 10. Water inlet pipe; 11. Drain pipe; 12. Purification box; 13. Flue gas outlet; 14. Rectangular opening; 15. Plug-in box; 16. Snap-fit ​​groove; 17. Mounting plate; 18. Rectangular groove; 19. Rectangular sealing ring; 20. Filter screen; 21. Activated carbon layer; 22. Plug-in block; 23. Spring; 24. Limiting plate; 25. Snap-fit ​​block. Detailed Implementation

[0014] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0015] Example 1, as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, a high-efficiency recovery device based on waste heat flue gas includes a main body box 1. A fixed horizontal plate 2 is fixedly connected inside the main body box 1. Two fixed vertical plates 3 are symmetrically fixed to the upper end of the fixed horizontal plate 2. One fixed vertical plate 3 has a water inlet 4 at its upper end, and the other fixed vertical plate 3 has a water outlet 5 at its upper end. Multiple partitions 6, arranged in an alternating pattern and with the same height as the fixed vertical plate 3, are fixedly connected to the inner sides of both fixed vertical plates 3. A predetermined distance is provided between the end of the partition 6 away from the fixed vertical plate 3 and the other fixed vertical plate 3. The upper end of the main body box 1... A quick-connector 7 is fixedly connected, with its lower end penetrating the main body box 1 and connected to a flue gas heat exchange pipe 8 with a serpentine bending structure and evenly distributed integral heat dissipation fins on its outer wall. The other end of the flue gas heat exchange pipe 8 is connected to a flue gas outlet pipe 9. A water inlet pipe 10 is detachably connected to the top of the main body box 1, and a drain pipe 11 is detachably connected to one side of the main body box 1. A purification box 12 is fixedly connected to the front end of the main body box 1. The top of the purification box 12 has a flue gas outlet 13, and the front end of the purification box 12 has a rectangular opening 14. Both sides of the purification box 12 are fixedly connected to fasteners. The insertion box 15 of the slot 16 has an installation plate 17 at the front of the purification box 12. Rectangular slots 18 are formed at the rear end of the installation plate 17 and the front end of the purification box 12. A rectangular sealing ring 19 is embedded in the rectangular slot 18. A filter screen 20 and an activated carbon layer 21 are detachably connected to the rear end of the rectangular sealing ring 19. Insertion blocks 22 are fixedly connected to both sides of the installation plate 17. A spring 23 is detachably connected inside the insertion block 22. The other end of the spring 23 abuts against a limit plate 24. A limit plate 24 is fixedly connected to one side with an interference fit to the snap-fit ​​slot 16 and a length greater than the snap-fit ​​slot. A snap-fit ​​block 25 with a depth of 16 and an appropriate length extending to the outside of the snap-fit ​​groove 16, and the width of the snap-fit ​​block 22 is consistent with the internal width of the snap-fit ​​box 15. The depth to which the snap-fit ​​block 22 is inserted into the snap-fit ​​box 15 is most of its total length. At the same time, the inner wall of the main body box 1 is fixedly provided with an insulation layer made of aluminum silicate cotton and whose outer wall is tightly attached to the inner wall of the main body box 1. The end of the flue gas outlet pipe 9 away from the flue gas heat exchange pipe 8 passes through the side wall of the purification box 12 and extends into the interior of the purification box 12. The end of the flue gas outlet pipe 9 located inside the purification box 12 is set towards the filter screen 20.

[0016] It should be noted that this utility model is a high-efficiency recovery device based on waste heat flue gas. In use, first connect the external waste heat flue gas delivery pipe to quick connector 7, connect the external water source pipe to inlet pipe 10, and connect the external hot water use or storage pipe to drain pipe 11. Then, the external waste heat flue gas enters the flue gas heat exchange tube 8 through quick connector 7. Because the flue gas heat exchange tube 8 has a serpentine bend structure and heat dissipation fins on its outer wall, it can increase the contact heat exchange area with the water in the main body tank 1. Simultaneously, after the water in the main body tank 1 enters through inlet pipe 10, it flows from the inlet gap 4 to the outlet gap 5 under the guidance of two fixed upright plates 3 and staggered partitions 6. During this process, it fully exchanges heat with the flue gas heat exchange tube 8. The hot water, after absorbing heat, is collected from outlet gap 5 and discharged through drain pipe 11 for use. The flue gas after heat exchange is then... The flue gas enters the purification chamber 12 through the exhaust pipe 9. First, it passes through the filter screen 20 to filter particulate impurities in the flue gas, and then through the activated carbon layer 21 to adsorb harmful gases and odors in the flue gas. The purified flue gas is finally discharged from the exhaust port 13. When it is necessary to replace or maintain the filter screen 20 and the activated carbon layer 21, press the snap block 25 that extends to the outside of the snap slot 16. This will cause the snap block 25 to compress the spring 23 and drive the limiting plate 24 to move into the insertion block 22 until the snap block 25 disengages from the snap slot 16. Then, pull the mounting plate 17 outward to disengage the insertion block 22 from the insertion box 15. The mounting plate 17 can then be removed, and the rectangular sealing ring 19 can be taken out from the rectangular groove 18. Then, the filter screen 20 and the activated carbon layer 21 at the rear end of the rectangular sealing ring 19 can be replaced. After the replacement is completed, the mounting plate 17 can be reinstalled and fixed in the reverse order of the above steps.

[0017] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high efficiency recovery device based on waste heat flue gas comprising a main body tank (1), characterized in that: The fixed transverse plate (2) is fixedly connected in the main box (1), and the upper ends of the fixed transverse plate (2) are symmetrically fixed with two fixed vertical plates (3), wherein the upper end of one of the fixed vertical plates (3) is provided with a water inlet gap (4), and the upper end of the other fixed vertical plate (3) is provided with a water outlet gap (5); the inner sides of the two fixed vertical plates (3) are fixedly connected with a plurality of partition plates (6); the upper end of the main box (1) is fixedly connected with a quick connector (7); the lower end of the quick connector (7) penetrates the main box (1) and is connected with a flue gas heat exchange pipe (8); the other end of the flue gas heat exchange pipe (8) is connected with a flue gas outlet pipe (9); the top of the main box (1) is detachably connected with a water inlet pipe (10); one side of the main box (1) is detachably connected with a drain pipe (11); the front end of the main box (1) is fixedly connected with a purification box (12); the top of the purification box (12) is provided with a smoke exhaust port (13); the front end of the purification box (12) is provided with a rectangular opening (14); the two sides of the purification box (12) are fixedly connected with plug-in boxes (15); one side of the plug-in box (15) is provided with a clamping groove (16); the front of the purification box (12) is provided with a mounting plate (17); the rear end of the mounting plate (17) and the front end of the purification box (12) are both provided with a rectangular groove (18); the rectangular groove (18) is embedded with a rectangular sealing ring (19); the rear end of the rectangular sealing ring (19) is detachably connected with a filter screen (20) and an activated carbon layer (21); the two sides of the mounting plate (17) are fixedly connected with plug-in blocks (22); the plug-in blocks (22) are detachably connected with springs (23); the other end of the spring (23) abuts against a limiting plate (24); one side of the limiting plate (24) is fixedly connected with a clamping block (25).

2. A high efficiency recovery device based on waste heat flue gas according to claim 1, characterized in that: The flue gas heat exchange pipe (8) is a serpentine bending structure, and a plurality of heat dissipation fins are uniformly distributed on the outer wall of the flue gas heat exchange pipe (8).

3. A high efficiency recovery device based on waste heat flue gas according to claim 1, characterized in that: The partition plates (6) on the inner sides of the two fixed vertical plates (3) are staggered, and the height of the partition plate (6) is the same as the height of the fixed vertical plate (3); a predetermined distance is provided between the end of the partition plate (6) away from the fixed vertical plate (3) and the other fixed vertical plate (3).

4. A high efficiency recovery device based on waste heat flue gas according to claim 1, characterized in that: One side of the clamping block (25) is a slope, the clamping block (25) and the clamping groove (16) are in interference fit, the length of the clamping block (25) is greater than the depth of the clamping groove (16), and the clamping block (25) extends to the outside of the clamping groove (16) by a proper length, the width of the plug-in block (22) is consistent with the internal width of the plug-in box (15), and the depth of the plug-in block (22) inserted into the plug-in box (15) is most of the total length.

5. A high efficiency recovery device based on waste heat flue gas according to claim 1, characterized in that: A heat preservation layer is fixedly arranged on the inner wall of the main box (1), the material of the heat preservation layer is aluminum silicate cotton, and the outer wall of the heat preservation layer is tightly attached to the inner wall of the main box (1); one end of the flue gas outlet pipe (9) away from the flue gas heat exchange pipe (8) penetrates the side wall of the purification box (12) and extends into the interior of the purification box (12), and the end of the flue gas outlet pipe (9) in the interior of the purification box (12) is arranged towards the filter screen (20).

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