Seawater desalination device

Abstract

The invention relates to the field of seawater desalination equipment, in particular to a seawater desalination device which comprises a platform and a box body, a heating cavity is formed in one side in the box body and communicated with a fresh water cavity through a cooling channel, and a plurality of electric heating pipes are mounted in the heating cavity and arranged on a translation mechanism; the translation mechanism is arranged in the heating cavity and used for driving the electric heating pipes to translate in the depth direction of the heating cavity. Compared with an electric heating pipe at a fixed position, the electric heating pipe can make full contact with seawater, uniform heating of the seawater is achieved, the situation of uneven heating of the seawater is effectively avoided, then the heating speed of the seawater is increased, the time needed by heating is shortened, seawater evaporation is accelerated, the evaporation capacity is increased, and the efficiency and effect of seawater desalination treatment are improved; and seawater is more efficiently converted into usable fresh water and stored in the fresh water cavity.

Description

Technical Field

[0001] The present invention relates to the field of seawater desalination equipment, in particular to a seawater desalination device. Background Art

[0002] A seawater desalination device is a device used to convert seawater into fresh water. It has a wide range of applications, including water supply, agricultural irrigation, industrial water use, and other fields. Especially in areas with scarce water resources, seawater desalination devices are an effective tool to solve the problem of freshwater shortage. With the advancement of technology and the reduction of device costs, the use of seawater desalination devices is becoming more and more popular, providing people with more freshwater resources.

[0003] There are over 20 desalination technologies currently in use, including reverse osmosis, low-efficiency, multi-stage flash evaporation, electrodialysis, compressed steam distillation, dew-point evaporation, hydropower cogeneration, thermal membrane cogeneration, and desalination technologies utilizing nuclear, solar, wind, and tidal energy, as well as various pre- and post-treatment processes such as microfiltration, ultrafiltration, and nanofiltration. Existing distillation-based desalination devices heat the device's internal electric heating tubes, vaporizing a large amount of seawater. The vaporized seawater then passes through a condenser, where it condenses into fresh water.

[0004] When using the distillation method, the heating tube is usually fixed in one position, which makes it difficult to heat the seawater evenly, resulting in slow heating and a longer heating time. Furthermore, after a period of use, salt scale will condense on the surface of the electric heating tube, affecting the heating effect. Summary of the Invention

[0005] In order to solve the problem that the heating pipe is fixed in one position, resulting in the inability to heat the seawater uniformly, which in turn causes the seawater to be heated slowly and requires a long time to heat, the present invention provides a seawater desalination device.

[0006] In order to solve the above problems, the technical solution adopted by the present invention is: A seawater desalination device includes a housing, a heating chamber provided on one side of the housing, the heating chamber being connected to a freshwater chamber via a cooling channel, a plurality of electric heating tubes installed in the heating chamber, the plurality of electric heating tubes being provided on a translation mechanism; the translation mechanism being provided in the heating chamber and being used to drive the plurality of electric heating tubes to translate along the depth direction of the heating chamber. The plurality of electric heating tubes are provided on a translation mechanism that can drive them to translate along the depth direction of the heating chamber, and the electric heating tubes are driven to move within the heating chamber by the translation mechanism, so that the electric heating tubes can heat seawater at different depths of the heating chamber. Compared with electric heating tubes in fixed positions, this method can ensure that the electric heating tubes are in full contact with the seawater, achieving uniform heating of the seawater and effectively avoiding uneven heating of the seawater, thereby accelerating the heating speed of the seawater, reducing the time required for heating, accelerating the evaporation of seawater, increasing the evaporation amount, improving the efficiency and effect of the seawater desalination process, and more efficiently converting seawater into usable freshwater and storing it in the freshwater chamber.

[0007] Preferably, the translation mechanism includes an adjustment plate slidably mounted within the heating chamber; the adjustment plate is connected to a drive assembly mounted on the housing; a plurality of electric heating tubes are fixedly connected to one side of the adjustment plate; each electric heating tube is fixedly mounted on a slider at one end distal from the adjustment plate; and the slider is slidably mounted on the inner wall of the heating chamber. The drive assembly drives the adjustment plate to translate within the heating chamber, thereby achieving translation of the plurality of electric heating tubes, thereby improving the uniformity of seawater heating, accelerating heating speed, reducing heating time, and increasing seawater evaporation. The provision of the slider ensures the stability of the translation of the electric heating tubes.

[0008] Preferably, a sliding groove is provided on the inner wall of the heating chamber to cooperate with the slider; the driving assembly includes a ball screw; the upper end of the ball screw is rotatably arranged on one side of the top surface of the box body, and the lower end of the ball screw is rotatably arranged on the bottom surface of the heating chamber; the nut of the ball screw is connected to the adjustment plate; the upper end of the ball screw is connected to a motor; and the motor is installed on the top surface of the box body. The motor drives the ball screw to rotate, efficiently converting the rotational motion of the motor into the linear motion of the adjustment plate, and accurately and stably drives the adjustment plate to move in the heating chamber. The cooperation between the sliding groove and the slider further ensures the stability of the electric heating tube during translation, preventing it from shaking or offsetting during movement, so that the electric heating tube can move smoothly along the depth direction of the heating chamber, thereby improving the uniformity of seawater heating, accelerating the heating speed, extending the service life of the equipment, enhancing the contact between seawater and the electric heating tube, and comprehensively improving the performance and working efficiency of the seawater desalination device.

[0009] Preferably, the electric heating tube is provided with a surface cleaning mechanism comprising a scraper; one side of the scraper contacts the electric heating tube; one end of the scraper is fixedly connected to a movable ring 1, with the scraper positioned away from movable ring 1 and movable ring 2; both movable rings 1 and 2 are sleeved around the outer surface of the heating tube; movable ring 2 is positioned on the heating tube near the chute; movable ring 2 is connected to a rotational drive assembly; and the rotational drive assembly is configured to drive movable ring 2 to rotate on the heating tube. The scraper is sleeved around the outer surface of the electric heating tube via movable rings 1 and 2. When the rotational drive assembly rotates movable ring 2, one side of the scraper continuously contacts the surface of the electric heating tube. This design effectively scrapes away salt deposits that accumulate on the surface of the electric heating tube due to evaporation of seawater. This not only ensures that the electric heating tube effectively heats seawater, improving heating efficiency, but also extends the service life of the electric heating tube. Furthermore, the rotation of the scraper stirs the seawater, causing it to slosh and facilitates the rinsing of scraped impurities, further enhancing the cleaning effect and ensuring the long-term, stable, and efficient operation of the desalination system.

[0010] Preferably, the rotation drive assembly includes a gear; the side of the gear is fixedly connected to the movable ring 2; the gear is sleeved on the outside of the heating tube; and a rack is fixedly provided on the inner wall of the heating chamber to match the gear. When the electric heating tube moves in the heating chamber, the gear engages with the rack on the inner wall of the heating chamber, thereby driving the movable ring 2 fixedly connected to the side of the gear to rotate, and the movable ring 2 in turn drives the scraper to rotate around the electric heating tube. With the help of the translational movement of the electric heating tube, the scraper can automatically rotate and clean without the need for an additional power source. This not only simplifies the structure and reduces energy consumption and costs, but also can promptly scrape off salt stains on the surface of the electric heating tube during its movement, thereby ensuring heating efficiency and extending the service life of the electric heating tube. At the same time, the scraper rotates and stirs the seawater, enhancing the cleaning effect.

[0011] Preferably, the side surface of the gear is connected to the movable ring 2 via a semicircular ring plate; the surface cleaning mechanism also includes a reset component; the reset component is connected to the gear to drive the gear to reset.

[0012] Preferably, the axial moving assembly includes a torsion spring; one end of the torsion spring is fixedly connected to the side of the gear, and the other end of the torsion spring is fixedly connected to the outer wall of the electric heating tube; the torsion spring is arranged between the gear and the movable ring 2, and is sleeved on the outside of the electric heating tube; the torsion spring is arranged on the inner side of the semicircular ring plate; the length of the slide groove is greater than the length of the rack, so that after the gear is separated from the rack, it can be reversely rotated with the elastic force of the torsion spring and quickly reset, so that the gear can be meshed with the rack again when it descends with the electric heating tube, ensuring the continuous operation of the surface cleaning mechanism. When the torsion spring drives the scraper to reset, the salt on one side of the scraper is shaken off to prevent the salt from gradually thickening on the surface of the heating tube due to long-term evaporation of seawater, thereby enabling the heating tube to better heat the seawater, and the salt on the surface of the heating tube is cleaned to extend the service life of the heating tube.

[0013] Preferably, an opening is provided at the connection between the upper end of the heating chamber and the cooling channel; a condensation mechanism is installed at the connection between the end of the cooling channel and the fresh water chamber; and an air-water separator is provided in the condensation mechanism. The opening provided at the connection between the upper end of the heating chamber and the cooling channel provides a smooth upward passage for the water vapor generated by the evaporation of seawater, allowing it to quickly enter the cooling channel. The air-water separator can effectively separate the trace salt droplets remaining in the steam, and then the condensation mechanism condenses the separated steam into fresh water, ensuring that pure fresh water flows into the fresh water chamber. This structural design ensures the efficient condensation of steam and the thorough separation of salt during the desalination process, greatly improving the quality and efficiency of fresh water collection, effectively ensuring the stable progress of seawater desalination work, and laying a solid foundation for the production of fresh water that meets the use standards.

[0014] Preferably, a solar photovoltaic panel is installed on the top surface of the box. The solar photovoltaic panel can absorb solar energy and convert it into electrical energy, providing power support for the operation of the seawater desalination device, saving electricity costs.

[0015] It can be seen from the above technical solutions that the advantages of the present invention are: 1. Within the heating chamber, a motor drives the ball screw, causing the nut connected to the adjustment plate to slide. The electric heating tube, fixed to the adjustment plate, moves horizontally along the depth of the heating chamber via a slider in a chute. This design enables the electric heating tube to heat seawater at different locations, significantly improving the problem of uneven seawater heating and making heating more uniform. This effectively speeds up the heating process, shortens the seawater heating time, significantly improves the evaporation efficiency and increases the evaporation volume, significantly enhancing the efficiency and quality of the seawater desalination process, effectively ensuring the stable and efficient operation of the entire desalination system and achieving the rapid conversion and collection of seawater into fresh water.

[0016] 2. The scraper is mounted on the outside of the electric heating tube through movable rings 1 and 2. When the gear in the rotating drive assembly connected to movable ring 2 rotates under the meshing action with the fixed rack on the inner wall of the heating chamber, it will drive movable ring 2 and the scraper to rotate around the electric heating tube. One side of the scraper always contacts the electric heating tube, which can effectively scrape off the salt stains attached to the surface of the electric heating tube due to the continuous evaporation of seawater, and prevent the salt stains from gradually thickening and affecting the heating efficiency. Moreover, during the rotation of the scraper, it can also stir the seawater, promote the shaking of the seawater, and wash away the scraped impurities. This not only ensures that the electric heating tube can better heat the seawater and improve the heating effect, but also extends the service life of the electric heating tube, further ensuring the long-term stable and efficient operation of the seawater desalination device and ensuring the smooth progress of the seawater desalination work.

[0017] 3. The length of the chute is greater than the length of the rack. This allows the gear to reverse its rotation with the help of the torsion spring after it disengages the rack, quickly resetting itself. This facilitates the gear to re-engage with the rack as it descends with the electric heating tube, ensuring the continuous operation of the surface cleaning mechanism. When the torsion spring drives the scraper to reset, it shakes off the salt on one side of the scraper, preventing the salt from gradually thickening on the surface of the electric heating tube due to long-term evaporation of seawater. This allows the spot heating tube to better heat the seawater. Cleaning the salt from the surface of the electric heating tube prolongs the service life of the electric heating tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of a partially cutaway structure of the present invention; Figure 3 A side view of the scraper of the present invention; Figure 4 for Figure 3 Enlarged schematic diagram of point A in the middle.

[0020] Figure numerals: 1. Box body; 2. Solar photovoltaic panel; 3. Motor; 4. Heating chamber; 5. Fresh water chamber; 6. Cooling channel; 7. Condensation mechanism; 8. Ball screw; 9. Adjustment plate; 10. Movable ring 1; 11. Electric heating tube; 12. Scraper; 13. Slide; 14. Rack; 15. Slider; 16. Gear; 17. Movable ring 2; 18. Torsion spring; 19. Semicircular ring plate. DETAILED DESCRIPTION

[0021] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this patent.

[0022] like Figure 1 and Figure 2As shown, a seawater desalination device includes a housing 1, with a heating chamber 4 disposed on one side of the housing 1. The heating chamber 4 is connected to a freshwater chamber 5 via a cooling channel 6. Several electric heating tubes 11 are installed in the heating chamber 4 and are mounted on a translation mechanism. The translation mechanism is disposed in the heating chamber 4 and is used to drive the several electric heating tubes 11 to translate along the depth direction of the heating chamber 4. A solar photovoltaic panel 2 is mounted on the top surface of the housing 1.

[0023] A plurality of electric heating tubes 11 are arranged on a translation mechanism that can drive them to translate along the depth direction of the heating chamber 4. The electric heating tubes 11 are driven to move in the heating chamber 4 by the translation mechanism, so that the electric heating tubes 11 can heat the seawater at different depths of the heating chamber 4. Compared with the electric heating tubes 11 in a fixed position, this method can make the electric heating tubes 11 fully contact with the seawater, achieve uniform heating of the seawater, effectively avoid the situation of uneven heating of the seawater, thereby accelerating the heating speed of the seawater, reducing the time required for heating, accelerating the evaporation of seawater, increasing the evaporation amount, improving the efficiency and effect of the seawater desalination process, and more efficiently converting seawater into usable fresh water and storing it in the freshwater chamber 5. The solar photovoltaic panel 2 can absorb solar energy and convert it into electrical energy, providing power support for the operation of the seawater desalination device, saving electricity costs.

[0024] Among them, an opening is provided at the connection between the upper end of the heating chamber 4 and the cooling channel 6; a condensation mechanism 7 is installed at the connection between the end of the cooling channel 6 and the fresh water chamber 5; and an air-water separator is provided in the condensation mechanism 7. The opening provided at the connection between the upper end of the heating chamber 4 and the cooling channel 6 provides a smooth upward passage for the water vapor generated by the evaporation of seawater, allowing it to quickly enter the cooling channel 6. The air-water separator can effectively separate the trace salt droplets remaining in the steam, and then the condensation mechanism 7 condenses the separated steam into fresh water, ensuring that pure fresh water flows into the fresh water chamber 5. This structural design ensures the efficient condensation of steam and the thorough separation of salt during the seawater desalination process, greatly improving the quality and efficiency of fresh water collection, effectively ensuring the stable progress of seawater desalination work, and laying a solid foundation for the production of fresh water that meets the use standards.

[0025] like Figure 2 and Figure 3As shown, the translation mechanism includes an adjustment plate 9 slidably disposed within the heating chamber 4; the adjustment plate 9 is connected to a drive assembly; the drive assembly is mounted on the housing 1; a plurality of electric heating tubes 11 are fixedly connected to one side of the adjustment plate 9; each electric heating tube 11 is fixedly mounted on a slider 15 at one end away from the adjustment plate 9; the slider 15 is slidably mounted on the inner wall of the heating chamber 4. A groove 13 is provided on the inner wall of the heating chamber 4 to match the slider 15; the drive assembly includes a ball screw 8; the upper end of the ball screw 8 is rotatably mounted on one side of the top surface of the housing 1, and the lower end of the ball screw 8 is rotatably mounted on the bottom surface of the heating chamber 4; the nut of the ball screw 8 is connected to the adjustment plate 9; the upper end of the ball screw 8 is connected to the motor 3; the motor 3 is mounted on the top surface of the housing 1.

[0026] Motor 3 is mounted on the top surface of housing 1. When started, it drives ball screw 8 to rotate. The nut on ball screw 8 is connected to adjustment plate 9, which drives adjustment plate 9 to slide within heating chamber 4. Adjustment plate 9 secures several electric heating tubes 11. The other ends of electric heating tubes 11 are supported and guided by sliders 15 in grooves 13 on the inner wall of heating chamber 4. This design allows electric heating tubes 11 to move smoothly in a specific direction within heating chamber 4, comprehensively and evenly heating seawater at different locations, effectively avoiding uneven local heating, significantly improving seawater heating efficiency, accelerating the evaporation process, and significantly improving the efficiency and quality of seawater desalination, effectively ensuring the stable and efficient operation of the device.

[0027] In other alternative embodiments, a chain drive is used to replace the ball screw structure. Two fixed shafts are installed in parallel at the top and bottom of the heating chamber 4, one of which is connected to the motor 3. The chain is wrapped around the two fixed shafts, and the adjustment plate 9 is firmly connected to the chain through a welded connecting block. Several electric heating tubes 11 are still fixed on one side of the adjustment plate 9. The end of the electric heating tube 11 away from the adjustment plate 9 is connected to the slider 15, and the inner wall of the heating chamber 4 is provided with a slide 13 corresponding to the slider 15. When the motor 3 is started, it drives the fixed shaft connected to it to rotate, thereby driving the chain to operate. The chain drives the adjustment plate 9 to move smoothly in the heating chamber 4 along the direction of the slide 13, realizing the translation of the electric heating tube 11 in the heating chamber 4. This chain drive method has relatively low cost and strong load-bearing capacity. Even in the face of large loads during long-term operation, it can ensure stable transmission effect, effectively drive the electric heating tube to heat the seawater evenly, and ensure the efficient operation of the seawater desalination device.

[0028] like Figure 3 and Figure 4As shown, the electric heating tube 11 is provided with a surface cleaning mechanism; the surface cleaning mechanism includes a scraper 12; one side of the scraper 12 contacts the electric heating tube 11; one end of the scraper 12 is fixedly connected to a movable ring 10, and the scraper 12 is away from a movable ring 2 17 of the movable ring 10; the movable ring 10 and the movable ring 2 17 are both sleeved outside the heating tube 11; the movable ring 2 17 is arranged on the side of the heating tube 11 near the chute 13; the movable ring 2 17 is connected to a rotation drive assembly; the rotation drive assembly is used to drive the movable ring 2 17 to rotate on the heating tube 11. The rotation drive assembly includes a gear 16; the side of the gear 16 is fixedly connected to the movable ring 2 17; the gear 16 is sleeved outside the heating tube 11; and a rack 14 is fixedly provided on the inner wall of the heating chamber 4 to cooperate with the gear 16.

[0029] The scraper 12 is sleeved on the outside of the electric heating tube 11 with the help of movable ring 10 and movable ring 2 17. When the gear 16 connected to the movable ring 2 17 engages with the rack 14 fixed to the inner wall of the heating chamber 4, the motor 3 drives the ball screw 8 to operate, causing the adjustment plate 9 to move, and then causing the electric heating tube 11 to translate. During this process, the gear 16 rotates on the rack 14, driving the movable ring 2 17 and the scraper 12 to rotate around the electric heating tube 11. One side of the scraper 12 always contacts the electric heating tube 11, which can promptly scrape off the salt produced by the evaporation of seawater and attached to the surface of the electric heating tube 11, preventing the accumulation of salt and affecting the heating efficiency. The rotation of the scraper 12 can also stir the seawater, so that the scraped impurities are washed away and dispersed. This not only ensures that the electric heating tube 11 efficiently heats the seawater, but also extends its service life, ensuring the long-term stable and efficient operation of the seawater desalination device, and effectively promoting the smooth development of seawater desalination work.

[0030] In the above arrangement, the side of the gear 16 is connected to the movable ring 2 17 via a semicircular ring plate 19; the surface cleaning mechanism also includes a reset assembly; the reset assembly is connected to the gear 16 and is used to drive the gear 16 to reset. The axial movement assembly includes a torsion spring 18; one end of the torsion spring 18 is fixedly connected to the side of the gear 16, and the other end of the torsion spring 18 is fixedly connected to the outer wall of the electric heating tube 11; the torsion spring 18 is arranged between the gear 16 and the movable ring 2 17, and is sleeved on the outside of the electric heating tube 11; the torsion spring 18 is arranged on the inner side of the semicircular ring plate 19; the length of the slide groove 13 is greater than the length of the rack 14; so that after the gear 16 is separated from the rack 14, it can rotate in the opposite direction with the help of the elastic force of the torsion spring 18 and quickly reset, so that the gear 16 can mesh with the rack 14 again when it descends with the electric heating tube 11, ensuring the continuous operation of the surface cleaning mechanism. When the torsion spring 18 drives the scraper 12 to reset, the salt on one side of the scraper 12 is shaken off to prevent the salt from gradually thickening on the surface of the electric heating tube 11 due to long-term evaporation of seawater, thereby enabling the electric heating tube 11 to better heat the seawater. After the salt on the surface of the electric heating tube 11 is cleaned, the service life of the electric heating tube 11 is extended.

[0031] When the heating tube 11 moves, it drives the gear 16, the movable ring 2 17 and the movable ring 1 10 to move. When the movable ring 2 17 moves, it drives the scraper 12 to move. When the gear 16 moves to engage with the rack 14, the gear 16 moves and rotates at the same time. When the gear 16 rotates, it drives the movable ring 2 17 to rotate. When the movable ring 2 17 rotates, it drives the scraper 12 to slide on the surface of the heating tube 11. When the scraper 12 slides along the surface of the heating tube 11, it drives the movable ring 10 to rotate. At the same time, when the gear 16 rotates, it drives the torsion spring 18 to deform. When the slider 15 slides to the upper end of the rack 14, the gear 16 continues to slide in the slide groove 13 as the slider 15 gradually disengages from the meshing with the rack 14. At this time, the torsion spring 18 drives the gear 16 to reset through the elastic force. When the gear 16 is reset, it drives the movable ring 2 17, the scraper 12 and the movable ring 1 10 to reset.

[0032] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A seawater desalination device, comprising a housing (1), a heating chamber (4) provided on one side of the housing (1), the heating chamber (4) being connected to a freshwater chamber (5) via a cooling channel (6), a plurality of electric heating tubes (11) being installed in the heating chamber (4), and characterized in that: The plurality of electric heating tubes (11) are arranged on the translation mechanism; the translation mechanism is arranged in the heating chamber (4) and is used to drive the plurality of electric heating tubes (11) to translate along the depth direction of the heating chamber (4).

2. The seawater desalination device according to claim 1, characterized in that: The translation mechanism includes an adjustment plate (9) slidably arranged in the heating chamber (4); the adjustment plate (9) is connected to a drive assembly; the drive assembly is arranged on the box (1); a side of the adjustment plate (9) is fixedly connected to a plurality of electric heating tubes (11); an end of each electric heating tube (11) away from the adjustment plate (9) is fixedly arranged on a slider (15); and the slider (15) is slidably arranged on the inner wall of the heating chamber (4).

3. The seawater desalination device according to claim 2, characterized in that: A sliding groove (13) is provided on the inner wall of the heating chamber (4) to cooperate with the sliding block (15); the driving assembly includes a ball screw (8); the upper end of the ball screw (8) is rotatably arranged on one side of the top surface of the box body (1), and the lower end of the ball screw (8) is rotatably arranged on the bottom surface of the heating chamber (4); the nut of the ball screw (8) is connected to the adjustment plate (9); the upper end of the ball screw (8) is connected to the motor (3); the motor (3) is installed on the top surface of the box body (1).

4. The seawater desalination device according to claim 3, characterized in that: The electric heating tube (11) is provided with a surface cleaning mechanism; the surface cleaning mechanism includes a scraper (12); one side of the scraper (12) contacts the electric heating tube (11); one end of the scraper (12) is fixedly connected to a movable ring (10), and the scraper (12) is away from the movable ring (10) and the movable ring (17); the movable ring (10) and the movable ring (17) are both sleeved outside the heating tube (11); the movable ring (17) is provided on the heating tube (11) near the chute (13); the movable ring (17) is connected to a rotation drive assembly; the rotation drive assembly is used to drive the movable ring (17) to rotate on the heating tube (11).

5. The seawater desalination device according to claim 4, characterized in that: The rotation drive assembly includes a gear (16); the side surface of the gear (16) is fixedly connected to the movable ring 2 (17); the gear (16) is sleeved outside the heating tube (11); and a rack (14) is fixedly provided on the inner wall of the heating chamber (4) to match the gear (16).

6. The seawater desalination device according to claim 5, characterized in that: The side surface of the gear (16) is connected to the movable ring 2 (17) via a semicircular ring plate (19); the surface cleaning mechanism also includes a reset component; the reset component is connected to the gear (16) and is used to drive the gear (16) to reset.

7. The seawater desalination device according to claim 6, characterized in that: The reset assembly includes a torsion spring (18); one end of the torsion spring (18) is fixedly connected to the side of the gear (16), and the other end of the torsion spring (18) is fixedly connected to the outer wall of the electric heating tube (11); the torsion spring (18) is arranged between the gear (16) and the movable ring 2 (17), and is sleeved outside the electric heating tube (11); the torsion spring (18) is arranged on the inner side of the semicircular ring plate (19); the length of the slide groove (13) is greater than the length of the rack (14).

8. The seawater desalination device according to claim 1, characterized in that: An opening is provided at the connection between the upper end of the heating chamber (4) and the cooling channel (6); a condensing mechanism (7) is installed at the connection between the end of the cooling channel (6) and the fresh water chamber (5); and a gas-water separator is provided in the condensing mechanism (7).

9. The seawater desalination device according to claim 1, characterized in that: A solar photovoltaic panel (2) is installed on the top surface of the box (1).

Images