Metallurgy heat exchanger with double spiral runners
The double-helix flow channel design and dynamic filter scraping mechanism solve the problem of insufficient impurity treatment in the metallurgical heat exchanger, achieve efficient heat exchange and stable operation, and reduce maintenance costs.
Patent Information
- Application Number
- CN202510795975.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-16
- Publication Date
- 2025-09-12
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Metallurgical heat exchangers have insufficient impurity handling capabilities in circulating water, leading to blockage and fouling. The fluid flow characteristics make it difficult to achieve efficient heat exchange. Traditional filtration structures are cumbersome to operate and difficult to adapt to continuous production.
It adopts a double-helix flow channel design, combined with a dynamic filter and scraping mechanism. The drive motor drives the rotating shaft and protrusions to intercept impurities. The lifting plate drives the filter to form turbulence. The scraper removes the filter cake layer. The locking block and dovetail block ensure the stability of the fixed ring.
Effectively intercept impurities, prevent flow channel blockage and dirt formation, improve heat exchange efficiency and uniformity, reduce maintenance costs, extend equipment life, and ensure stable equipment operation.
Smart Images
Figure CN120627751A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of heat exchangers, and more specifically, relates to a metallurgical heat exchanger with a double-helix flow channel. Background Art
[0002] Heat exchangers are devices that transfer heat from one medium to another, improving energy efficiency through direct contact or inter-wall heat transfer. In the metallurgical industry, they are used throughout the entire process of steel and non-ferrous metal smelting: During blast furnace ironmaking, heat exchangers are used to recover waste heat from high-temperature furnace gases exceeding 1000°C, preheat the combustion air to improve combustion efficiency and reduce fuel consumption, and convert waste heat into steam to achieve energy recycling. During converter steelmaking, heat exchangers are required to cool high-temperature flue gases from 1400°C to below 200°C in a short period of time to ensure the safe operation of subsequent dust removal equipment and recover heat. 1. The primary challenge facing existing metallurgical heat exchangers is their inadequate impurity handling capacity in circulating water. Circulating water in the metallurgical industry often carries large amounts of impurities such as metal debris, scale, and suspended solids. These substances can easily clog the heat exchanger flow path or adhere to the heat exchange surface, forming dirt, significantly increasing thermal resistance and significantly reducing heat exchange efficiency. 2. The fluid flow characteristics of traditional heat exchangers make it difficult to achieve efficient heat exchange. The boundary layer effect limits heat transfer in laminar flow, while the fixed flow channel design can easily lead to uneven water flow distribution, creating blind spots in heat exchange and causing localized overheating or overcooling. This not only reduces overall heat exchange uniformity but can also cause thermal stress concentration in the equipment, posing a safety hazard. 3. Traditional filtration structures are mostly static designs. After the impurities trapped on the filter surface form a "filter cake layer", the filtration resistance increases sharply, requiring frequent manual disassembly and cleaning. The operation is cumbersome and easily interrupts the production process, making it difficult to adapt to the continuous production needs of the metallurgical industry. Summary of the Invention
[0003] In order to solve the above technical problems, the present invention provides a metallurgical heat exchanger with a double-helix flow channel to solve the above problems.
[0004] A metallurgical heat exchanger with a double helical flow channel comprises a base, a heat exchanger housing is fixedly mounted on the upper end of the base, a first water outlet and a second water outlet are provided on the heat exchanger housing, fixing rings are fixedly mounted on both ends of the base, a spiral channel is provided inside the heat exchanger housing, and connecting strips are symmetrically fixedly mounted on the side walls of the fixing rings; The two connecting strips are both hinged with a filtering mechanism; The filter mechanism includes a heat exchanger sealing cover plate, the two heat exchanger sealing cover plates are respectively hinged on the two connecting strips, and the connecting pipes are fixedly installed on the opposite ends of the two heat exchanger sealing cover plates, and the fixing frames are fixedly installed on the side walls of the two heat exchanger sealing cover plates, and the first inner grooves are provided on the side walls of the two fixing frames, and the connecting grooves are respectively connected to the two connecting pipes, and the insides of the two first inner grooves are slidably installed with lifting plates, and the two lifting plates are fixedly installed with connecting strips, and the connecting frames are detachably installed on the side walls of the two fixing frames, and the water inlet heads are fixedly installed on the side walls of the two connecting frames, and the driving motors are fixedly installed on the side walls of the two driving motors. A rotating shaft is fixedly installed on the output ends of the two driving motors, and a protrusion is fixedly installed on the ends of the two rotating shafts away from the two driving motors, and the two protrusions are respectively arranged in the two connecting strips.
[0005] Preferably, sealing rings are fixedly installed inside the two connecting pipes, and the two sealing rings are respectively adapted to the two ends of the spiral channel. An annular groove is provided on the ends opposite to each other of the two heat exchanger sealing cover plates.
[0006] Preferably, a strip groove is provided inside each of the two lifting plates, and a filter mounting frame is rotatably mounted on each of the two lifting plates.
[0007] Preferably, the two filter mounting racks are symmetrically provided with mounting grooves, the filter bodies can be detachably mounted inside the two sets of mounting grooves, and the two filter mounting racks are provided with limiting grooves, which are respectively connected to the two strip grooves.
[0008] Preferably, a second inner groove is formed on the side walls of the two connecting frames, and plug posts are symmetrically fixedly installed in the two second inner grooves.
[0009] Preferably, a collection box is inserted into each of the two plug posts, and inner strips are symmetrically fixedly installed in the inner walls of the two second inner grooves.
[0010] Preferably, fixed columns are fixedly installed on the two groups of inner strips, and rotating columns are rotatably installed on the side walls of the two fixed columns.
[0011] Preferably, a slider is fixedly mounted on one end of the two rotating columns away from the fixed column, and the two sliders and the rotating columns are slidably mounted in the two strip grooves and the limiting groove respectively.
[0012] Preferably, scraping strips are symmetrically fixedly installed on the two rotating columns, the two groups of scraping strips are respectively fitted with the two groups of filter bodies, and a plurality of locking blocks are slidably installed inside the two annular grooves.
[0013] Preferably, a dovetail groove is formed at the lower end of each locking block, a dovetail block is slidably mounted inside each dovetail groove, and a screw is threadedly mounted inside each locking block.
[0014] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, a fixing ring, a heat exchanger sealing cover plate, a dovetail block, and a screw are provided. The rotation of the two screws pushes the two sets of dovetail blocks to move relative to each other. As the two sets of dovetail blocks move, they come into contact with the two fixing rings, thereby completing the fixation between the fixing ring and the heat exchanger sealing cover plate. During the operation of the metallurgical heat exchanger, this fixing method can effectively resist the vibration and impact caused by high temperature, high pressure, and fluid flow, prevent loosening and displacement between the fixing ring and the heat exchanger sealing cover plate, ensure the stability of the internal flow channel of the heat exchanger, avoid leakage and efficiency reduction caused by loose connection of components, and ensure the long-term reliable operation of the heat exchanger. In the present invention, a heat exchanger shell, a first inner tank, a lifting plate, a connecting strip, a filter body, a water inlet head, a driving motor, a rotating shaft and a protrusion are provided. Under the action of the driving motor, the rotating shaft will be driven to rotate, and the rotating shaft will drive the protrusion to rotate. Under the rotation of the protrusion, the two connecting strips will move up and down. At this time, the connecting strip will drive the lifting plate to move up and down inside the first inner tank. At this time, the circulating water entering from the water inlet head will be filtered through the filter body and then enter the heat exchanger shell. The device can effectively intercept impurities, suspended matter, etc. in the water, preventing these substances from entering the heat exchanger and causing blockage of the flow channel or adhering to the heat exchange surface to form dirt, affecting the heat exchange efficiency and normal operation of the equipment. The clean circulating water can also reduce wear and corrosion of internal components of the equipment, extend the service life of the heat exchanger, and reduce maintenance costs. In the present invention, by providing a lifting plate and a filter body, the lifting plate will drive the two filter bodies to move up and down when water enters, which will cause mechanical disturbance to the filtered circulating water, breaking the laminar flow state of the fluid in the flow channel and causing the water flow to form turbulent flow. In the turbulent state, the fluid molecules mix more violently, which can significantly increase the heat transfer coefficient and improve the heat exchange efficiency. In addition, the up and down movement of the filter body may cause the local cross-sectional area of the flow channel to change (such as expansion or contraction), causing the water flow to periodically accelerate or decelerate during the flow process. This dynamic change can avoid the heat exchange blind area generated by the water flow in the fixed flow channel, ensure that the circulating water evenly covers the heat exchange area, reduce local overheating or overcooling, and improve the overall heat exchange uniformity. In the present invention, a filter mounting frame, a filter body, and a scraping bar are provided. When the filter mounting frame rotates, the two filter bodies are driven to rotate accordingly. When the filter bodies rotate, friction is generated with the scraping bar, thereby scraping off the impurities trapped on the filter bodies. The mechanical scraping action can effectively remove impurities attached to the surface of filter media such as the filter screen and filter element. In traditional fixed filter structures, such impurities easily form a "filter cake layer", resulting in a significant increase in filtration resistance. Dynamic scraping can destroy the filter cake layer in real time, maintaining a stable filtration flux. In the present invention, a filter body, a collection box and a scraper are provided. The scraper is used to scrape off impurities on the filter body, and then the impurities fall into the collection box and are collected, completing the centralized collection and treatment of impurities. The equipment changes the situation where impurities are scattered everywhere, making the cleaning work more convenient and efficient. The staff only needs to clean the impurities in the collection box regularly, and there is no need to search for cleaning everywhere in the equipment, saving maintenance time and labor costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the heat exchanger sealing cover in the open state of the present invention; Figure 3 This is a schematic diagram of the dovetail block connection explosion structure of the present invention; Figure 4 This is a schematic diagram of the explosion structure of the heat exchanger sealing cover connection of the present invention; Figure 5 This is a schematic diagram of the explosion structure of the filter body connection of the present invention; Figure 6 This is a schematic diagram of the bump connection explosion structure of the present invention; Figure 7 This is a schematic diagram of the scraper strip connection structure of the present invention; Figure 8 It is a schematic diagram of the explosion structure of the collection box connection of the present invention.
[0016] In the figure, the corresponding relationship between the names of the components and the accompanying drawing numbers is as follows: 11, base; 12, heat exchanger housing; 13, first water outlet; 14, second water outlet; 15, fixing ring; 16, spiral channel; 17, connecting strip; 21, heat exchanger sealing cover; 22, connecting pipe; 23, sealing ring; 24, annular groove; 25, fixing frame; 26, first inner groove; 27, connecting groove; 28, lifting plate; 29, connecting strip; 31, strip shaped groove; 32. filter mounting bracket; 33. mounting groove; 34. filter body; 35. limiting groove; 36. connecting frame; 37. water inlet head; 38. driving motor; 39. rotating shaft; 41. protrusion; 42. second inner groove; 43. plug column; 44. collecting box; 45. inner strip; 46. fixing column; 47. rotating column; 48. slider; 49. scraper; 51. locking block; 52. dovetail groove; 53. dovetail block; 54. screw. DETAILED DESCRIPTION
[0017] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.
[0018] See also Figures 1-8 The present invention provides a metallurgical heat exchanger with a double spiral flow channel, comprising a base 11, a heat exchanger housing 12 fixedly mounted on the upper end of the base 11, a first water outlet 13 and a second water outlet 14 provided on the heat exchanger housing 12, a fixing ring 15 fixedly mounted on both ends of the base 11, a spiral channel 16 provided inside the heat exchanger housing 12, and connecting strips 17 symmetrically fixedly mounted on the side walls of the fixing ring 15; The two connecting strips 17 are hinged with a filter mechanism; The filtering mechanism includes a heat exchanger sealing cover plate 21, the two heat exchanger sealing cover plates 21 are respectively hinged on the two connecting strips 17, and the connecting pipes 22 are fixedly installed on the opposite ends of the two heat exchanger sealing cover plates 21. A fixing frame 25 is fixedly installed on the side walls of the two heat exchanger sealing cover plates 21. A first inner groove 26 is opened on the side wall of the two fixing frames 25, and a connecting groove 27 is opened in the inner wall of the two first inner grooves 26. The two connecting grooves 27 are respectively connected to the two connecting pipes 22, and a lifting plate 28 is slidably installed inside the two first inner grooves 26. A connecting strip 29 is fixedly installed on the two lifting plates 28. A connecting frame 36 is detachably installed on the side wall of the two fixing frames 25, and a water inlet head 37 is fixedly installed on the side wall of the two connecting frames 36. A drive motor 38 is fixedly installed on the side wall of the two connecting frames 36. A rotating shaft 39 is fixedly installed on the output end of the two drive motors 38, which can be driven by the circulating water when entering. Two water inlet heads 37 supply water to the interior of the heat exchanger housing 12, and two streams of circulating water flow in the spiral channel 16 to exchange heat. When the circulating water is supplied, the drive motor 38 can be started. Under the action of the drive motor 38, the rotating shaft 39 will be driven to rotate, and the rotating shaft 39 will drive the protrusion 41 to rotate. Under the rotation of the protrusion 41, the two connecting bars 29 will move up and down. At this time, the connecting bar 29 will drive the lifting plate 28 to move up and down inside the first inner groove 26. At this time, the circulating water entering from the water inlet head 37 will be filtered through the filter body 34 and then enter the heat exchanger housing 12. This equipment can effectively intercept impurities, suspended matter, etc. in the water, and prevent these substances from entering the heat exchanger and causing blockage of the flow channel or adhering to the heat exchange surface to form dirt, affecting the heat exchange efficiency and normal operation of the equipment. Clean circulating water can also reduce wear and corrosion of internal components of the equipment, extend the service life of the heat exchanger, and reduce maintenance costs. The two rotating shafts 39 are fixedly installed with a protrusion 41 at one end away from the two driving motors 38. The two protrusions 41 are respectively arranged in the two connecting strips 29. The two connecting pipes 22 are fixedly installed with a sealing ring 23. The two sealing rings 23 are respectively adapted to the two ends of the spiral channel 16. The two heat exchanger sealing cover plates 21 are provided with an annular groove 24 on the opposite end. The two lifting plates 28 are provided with a strip groove 31 running through the inside. The filter mounting bracket 32 is rotatably installed on the two lifting plates 28. The two filter mounting brackets 32 are symmetrically provided with mounting grooves 33. The filter body 34 can be detachably installed inside the two sets of mounting grooves 33. When the lifting plate 28 moves up and down, the two filter bodies 34 will be driven to move up and down, which will cause mechanical disturbance to the filtered circulating water, breaking the laminar flow state of the fluid in the flow channel and causing the water flow to form turbulent flow. In the turbulent state, the fluid molecules are mixed more violently, which can significantly increase the heat transfer coefficient and improve the heat exchange efficiency. The up and down movement of the filter body 34 may cause the local cross-sectional area of the flow channel to change (such as expansion or contraction), causing the water flow to periodically accelerate or decelerate during the flow process. This dynamic change can avoid the heat exchange blind area generated by the water flow in the fixed flow channel, ensure that the circulating water evenly covers the heat exchange area, reduce local overheating or overcooling, and improve the overall heat exchange uniformity. The two filter mounting frames 32 are provided with limiting grooves 35, and the two limiting grooves 35 are respectively connected to the two strip grooves 31. The side walls of the two connecting frames 36 are provided with second inner grooves 42. The two second inner grooves 42 are symmetrically fixed with plug posts 43. The two plug posts 43 are plugged with collection boxes 44. The inner walls of the two second inner grooves 42 are symmetrically fixed with inner strips 45. The two sets of inner strips 45 are fixedly installed with fixed posts 46. The side walls of the two fixed posts 46 are rotatably installed with rotating posts 44. 7. A slider 48 is fixedly installed on one end of the two rotating columns 47 away from the fixed column 46. The two sliders 48 and the rotating columns 47 are slidably installed in the two strip grooves 31 and the limit groove 35 respectively. Scraping strips 49 are symmetrically fixed on the two rotating columns 47. The two groups of scraping strips 49 are respectively fitted with the two groups of filter bodies 34. When the heat exchange is completed, the scraping strips 49 can be used to scrape off the impurities on the filter body 34, and then the impurities will fall into the collection box 44 and be collected, completing the centralized collection and processing of impurities. The equipment changes the situation where impurities are scattered everywhere, making cleaning work more convenient and efficient. The staff only needs to clean the impurities in the collection box 44 regularly, without having to search and clean everywhere in the equipment, saving maintenance time and labor costs; when the lifting plate 28 moves upward, the filter mounting bracket 32 will rotate clockwise inside the lifting plate 28 under the limiting effect of the slider 48. Conversely, when the lifting plate 28 moves downward, the filter mounting bracket 32 will rotate counterclockwise inside the lifting plate 28 under the limiting effect of the slider 48. The rotation of the filter mounting bracket 32 will drive the two filter bodies 34 to rotate accordingly, and the rotation of the filter bodies 34 will generate friction with the scraper 49, thereby scraping off the impurities trapped on the filter bodies 34. The mechanical scraping action can effectively remove impurities attached to the surface of filter media such as the filter screen and filter element. In the traditional fixed filter structure, such impurities are easy to form a "filter cake layer", which leads to a significant increase in the filtration resistance. The dynamic scraping can destroy the filter cake layer in real time to maintain a stable filtration flux. A plurality of locking blocks 51 are slidably installed inside the two annular grooves 24, and a dovetail groove 52 is opened at the lower end of each locking block 51, and a dovetail block 53 is slidably installed inside each dovetail groove 52, and a screw 54 is threadedly installed inside each locking block 51. When in use, the plurality of locking blocks 51 are first inserted into the annular grooves 24 respectively, and then the two screws 54 can be rotated on the two locking blocks 51. The rotation of the two screws 54 will push the two groups of dovetail blocks 53 to move relative to each other, and the movement of the two groups of dovetail blocks 53 will contact the two fixing rings 15, thereby completing the fixation between the fixing ring 15 and the heat exchanger sealing cover plate 21. During the operation of the metallurgical heat exchanger, this fixing method can effectively resist the vibration and impact caused by high temperature, high pressure and fluid flow, prevent loosening and displacement between the fixing ring 15 and the heat exchanger sealing cover plate 21, ensure the stability of the internal flow channel of the heat exchanger, avoid leakage and efficiency reduction caused by loose connection of components, and ensure long-term reliable operation of the heat exchanger.
[0019] Working principle: The first step is to insert the multiple locking blocks 51 into the annular grooves 24 respectively during use. Then, the two screws 54 can be rotated on the two locking blocks 51. The rotation of the two screws 54 will push the two sets of dovetail blocks 53 to move relative to each other. As the two sets of dovetail blocks 53 move, they will contact the two fixing rings 15, thereby completing the fixation between the fixing rings 15 and the heat exchanger sealing cover plate 21. During the operation of the metallurgical heat exchanger, this fixing method can effectively resist the vibration and impact caused by high temperature, high pressure and fluid flow, prevent the fixing ring 15 and the heat exchanger sealing cover plate 21 from loosening or displacement, ensure the stability of the internal flow channel of the heat exchanger, avoid leakage and efficiency reduction caused by loose connection of components, and ensure the long-term reliable operation of the heat exchanger. In the second step, when circulating water is introduced, water can be introduced into the heat exchanger shell 12 through the two water inlet heads 37. The two streams of circulating water flow in the spiral channel 16 to exchange heat. When the circulating water is introduced, the drive motor 38 can be started. Under the action of the drive motor 38, the rotating shaft 39 will be driven to rotate, and the rotating shaft 39 will drive the protrusion 41 to rotate. Under the rotation of the protrusion 41, the two connecting strips 29 will move up and down. At this time, the connecting strip 29 will drive the lifting plate 28 to move up and down inside the first inner groove 26. At this time, the circulating water entering from the water inlet head 37 will be filtered through the filter body 34 and then enter the heat exchanger shell 12. This equipment can effectively intercept impurities, suspended matter, etc. in the water, and prevent these substances from entering the heat exchanger and causing blockage of the flow channel or adhering to the heat exchange surface to form dirt, affecting the heat exchange efficiency and normal operation of the equipment. Clean circulating water can also reduce wear and corrosion of internal components of the equipment, extend the service life of the heat exchanger, and reduce maintenance costs. In the third step, when water enters, the lifting plate 28 will drive the two filter bodies 34 to move up and down, which will cause mechanical disturbance to the filtered circulating water, breaking the laminar flow state of the fluid in the flow channel and causing the water flow to form turbulent flow. In the turbulent state, the fluid molecules mix more violently, which can significantly increase the heat transfer coefficient and improve the heat exchange efficiency. In addition, the up and down movement of the filter body 34 may cause the local cross-sectional area of the flow channel to change (such as expansion or contraction), causing the water flow to periodically accelerate or decelerate during the flow process. This dynamic change can avoid the heat exchange blind spots caused by the water flow in the fixed flow channel, ensure that the circulating water evenly covers the heat exchange area, reduce local overheating or overcooling, and improve the overall heat exchange uniformity. In the fourth step, when the lifting plate 28 moves upward, the filter mounting frame 32 is limited by the slider 48 and rotates clockwise inside the lifting plate 28. Conversely, when the lifting plate 28 moves downward, the filter mounting frame 32 is limited by the slider 48 and rotates counterclockwise inside the lifting plate 28. The rotation of the filter mounting frame 32 drives the two filter bodies 34 to rotate accordingly. The rotation of the filter bodies 34 generates friction with the scraper 49, thereby scraping off the impurities trapped on the filter bodies 34. The mechanical scraping action can effectively remove impurities attached to the surface of filter media such as the filter screen and filter element. In traditional fixed filter structures, such impurities are prone to form a "filter cake layer", resulting in a significant increase in filtration resistance. Dynamic scraping can destroy the filter cake layer in real time and maintain a stable filtration flux. In the fifth step, when the heat exchange is completed, the impurities on the filter body 34 can be scraped off by the scraper 49, and then the impurities will fall into the collection box 44 and be collected, completing the centralized collection and treatment of impurities. This equipment changes the situation where impurities are scattered everywhere, making the cleaning work more convenient and efficient. The staff only needs to clean the impurities in the collection box 44 regularly, and there is no need to search and clean everywhere in the equipment, saving maintenance time and labor costs.
[0020] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.
Claims
1. A metallurgical heat exchanger with a double spiral flow channel, comprising a base (11), a heat exchanger shell (12) fixedly mounted on the upper end of the base (11), a spiral channel (16) being provided inside the heat exchanger shell (12), characterized in that: Connecting strips (17) are symmetrically fixedly mounted on the side walls of the fixing ring (15); The two connecting strips (17) are both hinged with a filtering mechanism; The filtering mechanism comprises a heat exchanger sealing cover plate (21), the two heat exchanger sealing cover plates (21) are respectively hinged on the two connecting strips (17), the two heat exchanger sealing cover plates (21) are fixedly installed with connecting pipes (22) on the opposite ends, the two heat exchanger sealing cover plates (21) are fixedly installed with fixing frames (25) on the side walls, the two fixing frames (25) are provided with first inner grooves (26) on the side walls, the two first inner grooves (26) are provided with connecting grooves (27) in the inner walls, the two connecting grooves (27) are respectively connected with the two connecting pipes (22), the two first inner grooves (26) are slidably installed with lifting plates (28), the two lifting plates (28) are fixedly installed with connecting strips (29), the two fixing frames (25) are detachably installed with connecting frames (36) on the side walls, and the two connecting frames (36) are fixedly installed with water inlet heads (37) on the side walls.
2. A metallurgical heat exchanger with a double helical flow channel as claimed in claim 1, characterized in that: The heat exchanger housing (12) is provided with a first water outlet (13) and a second water outlet (14), and fixing rings (15) are fixedly mounted on both ends of the base (11); The two connecting pipes (22) are both fixedly installed with sealing rings (23), and the two sealing rings (23) are respectively adapted to the two ends of the spiral channel (16). The two heat exchanger sealing cover plates (21) are both provided with an annular groove (24) on the ends facing away from each other.
3. A metallurgical heat exchanger with a double helical flow channel as claimed in claim 1, characterized in that: The two lifting plates (28) are both provided with strip-shaped grooves (31); Wherein, a filter mounting frame (32) is rotatably mounted on each of the two lifting plates (28).
4. A metallurgical heat exchanger with a double helical flow channel as claimed in claim 3, characterized in that: The two filter screen mounting frames (32) are symmetrically provided with mounting grooves (33), and the filter screen bodies (34) can be detachably mounted inside the two sets of mounting grooves (33); Wherein, both filter screen mounting frames (32) are provided with limiting grooves (35), and the two limiting grooves (35) are respectively connected to the two strip grooves (31).
5. A metallurgical heat exchanger with a double helical flow channel as claimed in claim 2, characterized in that: A driving motor (38) is fixedly mounted on the side walls of the two connecting frames (36), a rotating shaft (39) is fixedly mounted on the output ends of the two driving motors (38), and a protrusion (41) is fixedly mounted on one end of the two rotating shafts (39) away from the two driving motors (38), and the two protrusions (41) are respectively disposed in the two connecting bars (29); Wherein, a second inner groove (42) is provided on the side walls of the two connecting frames (36), and a plug post (43) is symmetrically fixedly installed in the two second inner grooves (42).
6. A metallurgical heat exchanger with a double helical flow channel as claimed in claim 5, characterized in that: The two plug posts (43) are both plugged with a collection box (44); Wherein, inner strips (45) are symmetrically fixedly installed in the inner walls of the two second inner grooves (42).
7. A metallurgical heat exchanger with a double helical flow channel as claimed in claim 6, characterized in that: The two groups of inner strips (45) are both fixedly mounted with fixing posts (46); Wherein, a rotating column (47) is rotatably mounted on the side walls of the two fixed columns (46).
8. A metallurgical heat exchanger with a double helical flow channel as claimed in claim 7, characterized in that: A slider (48) is fixedly mounted on one end of each of the two rotating columns (47) away from the fixed column (46); The two sliders (48) and the rotating column (47) are respectively slidably mounted in the two strip grooves (31) and the limiting groove (35).
9. A metallurgical heat exchanger with a double helical flow channel as claimed in claim 8, characterized in that: Scraping strips (49) are symmetrically fixedly mounted on the two rotating columns (47), and the two groups of scraping strips (49) are respectively fitted with the two groups of filter bodies (34); Wherein, a plurality of locking blocks (51) are slidably mounted inside the two annular grooves (24).
10. A metallurgical heat exchanger with a double helical flow channel as claimed in claim 9, characterized in that: Each locking block (51) has a dovetail groove (52) at its lower end; A dovetail block (53) is slidably mounted inside each dovetail groove (52), and a screw rod (54) is threadedly mounted inside each locking block (51).