Heat exchanger for sulfide production

Abstract

The invention relates to the technical field of heat exchangers, and provides a sulfide production heat exchanger which comprises a shell, end covers are fixedly connected to the two ends of the shell, an outer liquid outlet pipe is fixedly connected to the upper portion of the left end cover, an outer liquid inlet pipe is fixedly connected to the lower portion of the right end cover, and a driving motor is fixedly installed on the right side of the right end cover. An output shaft of the driving motor is fixedly connected with a transmission shaft, the middle of the transmission shaft is in threaded connection with a threaded sleeve, the curved surface of the threaded sleeve is fixedly connected with a moving plate, a plurality of scraping rings are fixedly installed in the moving plate, a stirring mechanism is installed on the right side of the threaded sleeve, and a scraping plate is fixedly installed at the left end of the transmission shaft. According to the technical scheme, the problems that the overall heat transfer performance of the heat exchanger becomes poor, the stability and efficiency of the technological process are affected and it is difficult to ensure that heat can be evenly transferred from a hot medium to a cold medium due to the fact that existing dissolved substances are separated out and deposited on the pipeline wall and thermal resistance is increased along with the increase of the thickness of a scaling layer are solved.

Description

Technical Field

[0001] Embodiments of the present invention relate to the technical field of heat exchangers, and in particular, to a heat exchanger for sulfide production. Background Art

[0002] Heat exchangers are key equipment in the sulfide production process, primarily used for heat recovery and temperature control. This heat management is crucial for maintaining optimal chemical reaction temperatures, improving energy efficiency, and ensuring process safety. Shell-and-tube heat exchangers are commonly used due to their robust structure and suitability for high-temperature and high-pressure environments. In sulfide production, heat exchangers recover the heat generated by the reaction. By recovering heat from high-temperature exhaust gases or other byproducts, heat can be used to preheat the feed gas, improving energy efficiency.

[0003] During the sulfide production process, when fluid passes through a shell-and-tube heat exchanger, temperature changes cause dissolved substances to precipitate and deposit on the outer tube walls. As the scaling layer grows thicker, thermal resistance increases, leading to a decrease in the heat transfer performance of the heat exchanger, affecting the stability and efficiency of the process. Furthermore, when fluid flows directly outside the heat exchanger tube bundle without any guidance, it flows directly along the bundle, which can easily lead to uneven fluid temperature distribution, making it difficult to ensure uniform heat transfer from the hot medium to the cold medium. Summary of the Invention

[0004] In order to overcome the above-mentioned defects, the present invention provides a heat exchanger for sulfide production, which solves the technical problems of a heat exchanger for sulfide production in the prior art.

[0005] According to one aspect, at least one embodiment of the present invention provides a heat exchanger for sulfide production, comprising a shell, both ends of the shell are fixedly connected to end covers, the upper portion of the left end cover is fixedly connected to an outgoing liquid pipe, the lower portion of the right end cover is fixedly connected to an external liquid inlet pipe, a drive motor is fixedly installed on the right side of the right end cover, the output shaft of the drive motor is fixedly connected to a transmission shaft, the middle portion of the transmission shaft is threadedly connected to a threaded sleeve, a movable plate is fixedly connected to the curved surface of the threaded sleeve, a plurality of scraper rings are fixedly installed inside the movable plate, a stirring mechanism is installed on the right side of the threaded sleeve, and a scraper is fixedly installed on the left end of the transmission shaft; Two liquid rings, a plurality of bundle tubes are connected between the two liquid rings, and the curved surfaces of the two liquid rings are fixedly connected with a plurality of connecting blocks. The upper part of the left liquid ring is connected with an internal liquid outlet pipe, and the lower part of the right liquid ring is connected with an internal liquid inlet pipe. The above structure can drive the drive shaft to rotate forward and reverse by driving the motor when working. Since the threaded sleeve is threadedly connected to the drive shaft, and the scraper ring is slidably connected to the bundle tube, the threaded sleeve will drive the movable plate and the scraper ring to move left and right, thereby scraping off the scaling generated by the heat exchange between the liquid inside the shell and the bundle tube through the bundle tube, thereby solving the problem that the existing dissolved substances are precipitated and deposited on the pipe wall. As the thickness of the scaling layer increases, the thermal resistance increases, resulting in poor overall heat transfer performance of the heat exchanger, affecting the stability and efficiency of the process.

[0006] Preferably, the right end of the transmission shaft is fixedly connected with a stirring blade, the inside of the left end cover is fixedly connected with a mounting ring, the middle of the mounting ring is movably mounted with a filter screen, and the bottom of the filter screen is movably mounted with an ash collecting shell.

[0007] Preferably, the stirring mechanism includes a connecting ring, the right side of the connecting ring is fixedly connected to a shaft body, the interior of the shaft body is provided with a ring cavity and multiple sliding cavities, a connecting rod is rotatably installed in the interior of the sliding cavity, the outer end of the connecting rod is fixedly connected to a rotating plate, the inner end of the sliding cavity is fixedly installed with a gear, an electromagnetic ring and a permanent magnet ring are provided in the interior of the ring cavity, and the left side of the permanent magnet ring is fixedly connected to multiple racks. The above structure can be energized through the electromagnetic ring when working, thereby adsorbing or repelling the permanent magnet ring, thereby driving the gear to rotate, and the gear will drive the rotating plate to deflect a certain angle through the connecting rod. The deflection angle of the rotating plate will be adapted to the rotation direction of the transmission shaft, and the driving motor will work to drive the transmission shaft to rotate forward, thereby driving the stirring blade to rotate, and at the same time driving the multiple rotating plates to rotate, thereby stirring the cooling liquid or the heating liquid, further increasing its contact time with the bundle tube, and making its temperature mixing more uniform, thereby improving the heat exchange efficiency.

[0008] Preferably, a thread is provided in the middle of the transmission shaft, and a plurality of circumferentially equidistantly arranged sliding grooves are provided on the curved surface of the transmission shaft. The transmission shaft is rotatably connected to the end covers on both sides. The above structure can be slidably connected to the multiple sliding grooves on the curved surface of the transmission shaft during operation, so that the shaft is driven by the transmission shaft to rotate, and driven by the threaded sleeve, follows the movement of the threaded sleeve.

[0009] Preferably, the scraper ring is slidably sleeved on the curved surface of the bundle tube, and the scraper is adapted to the inner curved surface of the filter screen.

[0010] Preferably, the middle part of the filter is rotatably connected to the transmission shaft, and a notch is provided at the bottom of the filter. When the above structure is in operation, the transmission shaft is driven by the driving motor to periodically reverse, thereby driving the scraper ring to move back and forth linearly, thereby cleaning the scale on the surface of the bundle tube. The rotation of the transmission shaft will drive the scraper to rotate, and the rotating scraper will scrape the scale on the inner wall of the filter into the interior of the dust collecting shell.

[0011] Preferably, the plurality of connection blocks are all fixedly connected to the inner wall of the outer shell, and the inner liquid outlet pipe and the inner liquid inlet pipe both penetrate the inner wall of the outer shell.

[0012] Preferably, a rotation groove is opened on the right side of the threaded sleeve, the connecting ring is located inside the rotation groove, and the shaft body is slidably connected to the multiple sliding grooves.

[0013] Preferably, the rack is meshed with the gear, and both the rack and the gear are located inside the sliding cavity, and the rack is slidably connected to the sliding cavity.

[0014] Preferably, the electromagnetic ring is fixedly connected to the inner wall of the ring cavity, and the permanent magnet ring is located on the left side of the electromagnetic ring and is slidingly connected to the ring cavity. When the above structure is working, the electromagnetic ring is energized in the forward and reverse directions, thereby adsorbing or repelling the permanent magnet ring, thereby driving the gear to rotate. The gear will drive the rotating plate to deflect a certain angle through the connecting rod, and the deflection angle of the rotating plate will be adapted to the rotation direction of the transmission shaft.

[0015] The beneficial effects of the embodiments of the present invention are: 1. The present invention drives the drive shaft to rotate forward and reverse by driving the motor. Since the threaded sleeve is threadedly connected to the drive shaft and the scraper ring is slidably connected to the bundle tube, the threaded sleeve drives the movable plate and the scraper ring to move left and right, thereby scraping off the scale generated by the heat exchange between the liquid inside the shell and the bundle tube through the bundle tube, thereby solving the problem that dissolved substances precipitate and deposit on the pipe wall. As the thickness of the scale layer increases, the thermal resistance increases, resulting in poor overall heat transfer performance of the heat exchanger and affecting the stability and efficiency of the process.

[0016] 2. The present invention drives the drive shaft to reverse periodically through a driving motor, thereby driving the scraper ring to move back and forth linearly, thereby cleaning the scale on the surface of the bundle tube. The cleaned scale will move to the inside of the left end cover along with the cooling liquid or heating liquid. The cooling liquid or heating liquid will pass through the filter and be discharged from the outgoing liquid pipe, while the scale will be filtered on the inner wall of the filter. The rotation of the drive shaft will drive the scraper to rotate, and the rotating scraper will scrape the scale on the inner wall of the filter into the interior of the dust collecting shell for collection, thereby preventing the filter from being blocked.

[0017] 3. The present invention energizes the electromagnetic ring, thereby attracting or repelling the permanent magnet ring, thereby driving the gear to rotate. The gear will drive the rotating plate to deflect a certain angle through the connecting rod. The deflection angle of the rotating plate will be adapted to the rotation direction of the transmission shaft. The drive motor will work and drive the transmission shaft to rotate forward, thereby driving the stirring blade to rotate, and at the same time, it will drive multiple rotating plates to rotate, thereby stirring the cooling liquid or heating liquid, further increasing its contact time with the bundle tube, making its temperature mixing more uniform, and improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for describing the embodiments of the present invention. Obviously, the drawings described below are merely exemplary embodiments of the present invention. Those skilled in the art can, without inventive effort, derive other drawings based on the contents of the exemplary embodiments of the present invention and these drawings.

[0019] Figure 1 This is a schematic diagram of the overall appearance of the present invention; Figure 2 A half-section schematic diagram of the housing of the present invention; Figure 3 A half-section schematic diagram of the end cover of the present invention; Figure 4 This is a half-section schematic diagram of the bundle tube of the present invention; Figure 5 This is a half-section schematic diagram of the shaft body of the present invention; Figure 6 This is a schematic cross-sectional view of a half-body of the sliding cavity of the present invention; Figure 7 It is a schematic diagram of the transmission shaft structure of the present invention.

[0020] In the figure: 1. outer shell; 2. end cover; 3. outgoing liquid pipe; 4. external liquid inlet pipe; 5. driving motor; 6. transmission shaft; 7. threaded sleeve; 8. movable plate; 9. scraper ring; 10. stirring mechanism; 101. connecting ring; 102. shaft; 103. ring cavity; 104. sliding cavity; 105. connecting rod; 106. rotating plate; 107. gear; 108. electromagnetic ring; 109. permanent magnet ring; 1010. rack; 11. scraper; 12. liquid ring; 13. bundle pipe; 14. connecting block; 15. internal liquid outlet pipe; 16. internal liquid inlet pipe; 17. stirring blade; 18. mounting ring; 19. filter screen; 20. ash collecting shell; 21. chute. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention.

[0022] To simplify the drawings, only portions relevant to the invention are schematically depicted in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one component with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."

[0023] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0024] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0025] In the description of this embodiment, the terms "up", "down", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0026] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0027] See also Figure 1-7The present application discloses a heat exchanger for sulfide production, comprising a shell 1, both ends of which are fixedly connected to end covers 2, an outgoing liquid pipe 3 fixedly connected to the upper part of the left end cover 2, an external liquid inlet pipe 4 fixedly connected to the lower part of the right end cover 2, a drive motor 5 fixedly mounted on the right side of the right end cover 2, an output shaft of the drive motor 5 fixedly connected to a transmission shaft 6, a threaded sleeve 7 threadedly connected to the middle part of the transmission shaft 6, a movable plate 8 fixedly connected to the curved surface of the threaded sleeve 7, a plurality of scraping rings 9 fixedly mounted on the interior of the movable plate 8, a stirring mechanism 10 mounted on the right side of the threaded sleeve 7, and a scraper 11 fixedly mounted on the left end of the transmission shaft 6; Two liquid rings 12, with multiple bundle tubes 13 connected between the two liquid rings 12, and multiple connection blocks 14 fixedly connected to the curved surfaces of the two liquid rings 12. The upper part of the left liquid ring 12 is connected to the internal liquid outlet pipe 15, and the lower part of the right liquid ring 12 is connected to the internal liquid inlet pipe 16; Its function is to drive the drive shaft 6 to rotate forward and reverse by driving the motor 5. Since the threaded sleeve 7 is threadedly connected to the drive shaft 6, and the scraper ring 9 is slidably connected to the bundle tube 13, the threaded sleeve 7 will drive the movable plate 8 and the scraper ring 9 to move left and right, thereby scraping off the scale generated by the disturbed cooling liquid or heating liquid inside the shell 1 during the heat exchange with the liquid inside the bundle tube 13 through the bundle tube 13, thereby solving the problem that the existing dissolved substances are precipitated and deposited on the pipe wall. As the thickness of the scale layer increases, the thermal resistance increases, resulting in the deterioration of the overall heat transfer performance of the heat exchanger, affecting the stability and efficiency of the process.

[0028] Among them, the right end of the transmission shaft 6 is fixedly connected to a stirring blade 17, the inside of the left end cover 2 is fixedly connected to a mounting ring 18, the middle of the mounting ring 18 is movably mounted with a filter screen 19, and the bottom of the filter screen 19 is movably mounted with an ash collecting shell 20.

[0029] The stirring mechanism 10 includes a connecting ring 101, a shaft 102 is fixedly connected to the right side of the connecting ring 101, an annular cavity 103 and a plurality of sliding cavities 104 are provided inside the shaft 102, a connecting rod 105 is rotatably installed inside the sliding cavity 104, a rotating plate 106 is fixedly connected to the outer end of the connecting rod 105, a gear 107 is fixedly installed at the inner end of the sliding cavity 104, an electromagnetic ring 108 and a permanent magnet ring 109 are provided inside the annular cavity 103, and a plurality of racks 1010 are fixedly connected to the left side of the permanent magnet ring 109; Its function is to energize the electromagnetic ring 108, thereby attracting or repelling the permanent magnet ring 109, thereby driving the gear 107 to rotate. The gear 107 will drive the rotating plate 106 to deflect a certain angle through the connecting rod 105. The deflection angle of the rotating plate 106 will be adapted to the rotation direction of the transmission shaft 6. The drive motor 5 will work and drive the transmission shaft 6 to rotate forward, thereby driving the stirring blade 17 to rotate, and at the same time, it will drive multiple rotating plates 106 to rotate, thereby stirring the cooling liquid or the heating liquid, further increasing its contact time with the bundle tube 13, and making its temperature more evenly mixed, thereby improving the heat exchange efficiency.

[0030] Among them, a thread is provided in the middle of the transmission shaft 6, and a plurality of circumferentially equidistantly arranged sliding grooves 21 are opened on the curved surface of the transmission shaft 6. The transmission shaft 6 is rotatably connected to the end covers 2 on both sides. Its function is that the shaft body 102 is slidably connected to the plurality of sliding grooves 21 on the curved surface of the transmission shaft 6, so that the shaft body 102 is driven by the transmission shaft 6 to rotate, and driven by the threaded sleeve 7, follows the movement of the threaded sleeve 7.

[0031] Among them, the scraper ring 9 is slidably sleeved on the curved surface of the bundle tube 13, the scraper 11 is adapted to the inner curved surface of the filter 19, the middle part of the filter 19 is rotatably connected to the drive shaft 6, and a notch is provided at the bottom of the filter 19. Its function is to drive the drive shaft 6 to periodically reverse through the drive motor 5, thereby driving the scraper ring 9 to reciprocate linearly, thereby cleaning the scale on the surface of the bundle tube 13. The rotation of the drive shaft 6 will drive the scraper 11 to rotate, and the rotating scraper 11 will scrape the scale on the inner wall of the filter 19 into the interior of the ash collecting shell 20.

[0032] The plurality of connection blocks 14 are all fixedly connected to the inner wall of the outer shell 1 , and the inner liquid outlet pipe 15 and the inner liquid inlet pipe 16 both penetrate the inner wall of the outer shell 1 .

[0033] A rotation groove is provided on the right side of the threaded sleeve 7 , the connecting ring 101 is located inside the rotation groove, and the shaft 102 is slidably connected to the plurality of sliding grooves 21 .

[0034] The rack 1010 is meshed with the gear 107 . Both the rack 1010 and the gear 107 are located inside the sliding cavity 104 . The rack 1010 is slidably connected to the sliding cavity 104 .

[0035] Among them, the electromagnetic ring 108 is fixedly connected to the inner wall of the ring cavity 103, and the permanent magnet ring 109 is located on the left side of the electromagnetic ring 108 and is slidingly connected to the ring cavity 103. Its function is that the electromagnetic ring 108 is energized in the forward and reverse directions, thereby adsorbing or repelling the permanent magnet ring 109, thereby driving the gear 107 to rotate. The gear 107 will drive the rotating plate 106 to deflect a certain angle through the connecting rod 105, and the deflection angle of the rotating plate 106 will be adapted to the rotation direction of the transmission shaft 6.

[0036] Working principle: High-temperature waste gas or other by-products generated during sulfide production are supplied to the interior of the right liquid ring 12 through the inner liquid inlet pipe 16, then enter the interior of the multiple bundled tubes 13, and finally enter the interior of the bundled tubes 13 on the left and are discharged through the inner liquid outlet pipe 15; while cooling liquid or heating liquid enters the interior of the right end cover 2 through the outer liquid inlet pipe 4, then flows through the outer shell 1 to the interior of the left end cover 2, and is finally discharged through the outer liquid pipe 3; When the cooling liquid or the heating liquid enters the interior of the right end cover 2, the driving motor 5 works, driving the transmission shaft 6 to rotate forward, thereby driving the stirring blade 17 to rotate, thereby rotating the cooling liquid or the heating liquid inside the right end cover 2. Due to the continuous entry of the liquid, the liquid will spirally advance inside the shell 1, thereby increasing the contact time between the liquid and the curved surface of the bundle tube 13. Since the threaded sleeve 7 is threadedly connected to the transmission shaft 6, and the scraper ring 9 is slidably connected to the bundle tube 13, the threaded sleeve 7 will drive the moving plate 8 and the scraper ring 9 to move to the right. Since the shaft body 102 is slidably connected to the multiple grooves 21 on the curved surface of the transmission shaft 6, the shaft body 102 is driven by the transmission shaft 6 to rotate, and driven by the threaded sleeve 7, it follows the movement of the threaded sleeve 7; Before determining the direction of rotation of the drive motor 5, the electromagnetic ring 108 is energized in the forward and reverse directions, thereby attracting or repelling the permanent magnet ring 109, thereby driving the gear 107 to rotate. The gear 107 will drive the rotating plate 106 to deflect a certain angle through the connecting rod 105. The deflection angle of the rotating plate 106 will be adapted to the rotation direction of the transmission shaft 6, stirring the cooling liquid or the heating liquid, further increasing its contact time with the bundle tube 13, and making its temperature more evenly mixed, thereby improving the heat exchange efficiency; When the disturbed cooling liquid or heating liquid inside the shell 1 contacts the curved surface of the bundle tube 13, the liquid inside and outside the bundle tube 13 undergoes heat exchange through the bundle tube 13. During this process, the outer curved surface of the bundle tube 13 is prone to scaling. The drive motor 5 drives the transmission shaft 6 to reverse periodically, thereby driving the scraper ring 9 to reciprocate linearly, thereby cleaning the scale on the surface of the bundle tube 13 to prevent the scaling layer from increasing in thickness and thermal resistance, resulting in poor overall heat transfer performance of the heat exchanger and affecting the stability and efficiency of the process. Secondly, the scaling layer will also lead to a decrease in heat transfer efficiency. In order to maintain the same production rate or achieve the required temperature conditions, the system needs to consume more energy to heat or cool the medium, which directly leads to an increase in energy costs. Moreover, uneven scaling can cause local overheating or stress concentration in the heat exchanger, especially in high-temperature and high-pressure working environments, increasing the risk of equipment failure or damage. The cleaned scale will move to the inside of the left end cover 2 along with the cooling liquid or heating liquid, and the cooling liquid or heating liquid will pass through the filter 19 and be discharged from the outgoing liquid pipe 3, while the scale will be filtered on the inner wall of the filter 19. The rotation of the drive shaft 6 will drive the scraper 11 to rotate, and the rotating scraper 11 will scrape the scale on the inner wall of the filter 19 into the interior of the ash collecting shell 20, thereby preventing the filter 19 from being blocked.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A heat exchanger for sulfide production, comprising a housing (1), characterized in that: Both ends of the housing (1) are fixedly connected to end covers (2), the upper part of the left end cover (2) is fixedly connected to an outgoing liquid pipe (3), the lower part of the right end cover (2) is fixedly connected to an external liquid inlet pipe (4), a driving motor (5) is fixedly installed on the right side of the right end cover (2), the output shaft of the driving motor (5) is fixedly connected to a transmission shaft (6), the middle part of the transmission shaft (6) is threadedly connected to a threaded sleeve (7), the curved surface of the threaded sleeve (7) is fixedly connected to a moving plate (8), a plurality of scraping rings (9) are fixedly installed inside the moving plate (8), a stirring mechanism (10) is installed on the right side of the threaded sleeve (7), and a scraper (11) is fixedly installed on the left end of the transmission shaft (6); Two liquid rings (12), a plurality of bundle tubes (13) are connected between the two liquid rings (12), the curved surfaces of the two liquid rings (12) are fixedly connected with a plurality of connection blocks (14), the upper portion of the left liquid ring (12) is connected to an internal liquid outlet pipe (15), and the lower portion of the right liquid ring (12) is connected to an internal liquid inlet pipe (16).

2. A heat exchanger for sulfide production according to claim 1, characterized in that: The right end of the transmission shaft (6) is fixedly connected to a stirring blade (17), the interior of the left end cover (2) is fixedly connected to a mounting ring (18), a filter screen (19) is movably mounted in the middle of the mounting ring (18), and an ash collecting shell (20) is movably mounted at the bottom of the filter screen (19).

3. A heat exchanger for sulfide production according to claim 2, characterized in that: The stirring mechanism (10) comprises a connecting ring (101), the right side of the connecting ring (101) is fixedly connected to a shaft (102), an annular cavity (103) and a plurality of sliding cavities (104) are provided inside the shaft (102), a connecting rod (105) is rotatably installed inside the sliding cavity (104), the outer end of the connecting rod (105) is fixedly connected to a rotating plate (106), a gear (107) is fixedly installed at the inner end of the sliding cavity (104), an electromagnetic ring (108) and a permanent magnet ring (109) are provided inside the annular cavity (103), and a plurality of racks (1010) are fixedly connected to the left side of the permanent magnet ring (109).

4. A heat exchanger for sulfide production according to claim 3, characterized in that: The middle portion of the transmission shaft (6) is provided with a thread, and the curved surface of the transmission shaft (6) is provided with a plurality of circumferentially equidistantly arranged sliding grooves (21), and the transmission shaft (6) is rotatably connected to the end covers (2) on both sides.

5. A heat exchanger for sulfide production according to claim 4, characterized in that: The scraper ring (9) is slidably sleeved on the curved surface of the bundle tube (13), and the scraper (11) is adapted to the inner curved surface of the filter screen (19).

6. A heat exchanger for sulfide production according to claim 5, characterized in that: The middle portion of the filter screen (19) is rotatably connected to the transmission shaft (6), and a notch is provided at the bottom of the filter screen (19).

7. A heat exchanger for sulfide production according to claim 6, characterized in that: The plurality of connecting blocks (14) are all fixedly connected to the inner wall of the outer shell (1), and the inner liquid outlet pipe (15) and the inner liquid inlet pipe (16) both penetrate the inner wall of the outer shell (1).

8. A heat exchanger for sulfide production according to claim 7, characterized in that: A rotation groove is provided on the right side of the threaded sleeve (7), the connecting ring (101) is located inside the rotation groove, and the shaft (102) is slidably connected to the plurality of sliding grooves (21).

9. A heat exchanger for sulfide production according to claim 8, characterized in that: The rack (1010) is meshed with the gear (107), and both the rack (1010) and the gear (107) are located inside the sliding cavity (104), and the rack (1010) is slidably connected to the sliding cavity (104).

10. A heat exchanger for sulfide production according to claim 9, characterized in that: The electromagnetic ring (108) is fixedly connected to the inner wall of the ring cavity (103), and the permanent magnet ring (109) is located on the left side of the electromagnetic ring (108) and is slidably connected to the ring cavity (103).

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