Low-temperature multi-effect seawater desalination spray system

Abstract

The application discloses a low-temperature multi-effect seawater desalination spraying system and belongs to the technical field of seawater desalination. The low-temperature multi-effect seawater desalination spraying system comprises a shell, an evaporation mechanism, a pressure reduction mechanism, a cleaning mechanism and a drainage mechanism. The evaporation mechanism comprises a treatment cylinder arranged in the shell, a heat exchange element is arranged in the treatment cylinder, the evaporation mechanism further comprises a first pumping element, the first pumping element pumps filtered seawater into the treatment cylinder, the heat exchange element evaporates the seawater in the treatment cylinder, and a steam discharge port is arranged on the top surface of the treatment cylinder. The pressure reduction mechanism comprises a piston cylinder arranged on the outer side of the shell, a second piston plate vertically slides in the piston cylinder, the pressure reduction mechanism further comprises a first driving element, the first driving element drives the second piston plate to move, a first one-way pipe is in communication between the bottom surface of the piston cylinder and the shell, and a first one-way valve is arranged in the first one-way pipe. The cleaning mechanism comprises a second pumping element, the second pumping element pumps cleaning liquid into the treatment cylinder, and a plurality of scraping leaves are arranged in the piston cylinder.

Description

Technical Field

[0001] This application relates to the field of seawater desalination technology, and in particular to a low-temperature multi-effect seawater desalination spray system. Background Technology

[0002] Seawater desalination is one of the important ways to solve the problem of freshwater shortage. Currently, the common seawater desalination process involves heating seawater to a certain temperature, causing it to evaporate and form steam, which is then condensed into freshwater. This principle of seawater desalination is widely used in practice, has relatively low cost, and can be miniaturized and operated with low energy consumption, providing a feasible way to obtain freshwater for some water-scarce areas.

[0003] Current seawater desalination systems on the market have some significant drawbacks in actual operation. Most systems use atmospheric pressure heating, requiring seawater to be heated to 100°C for complete evaporation. This undoubtedly consumes a large amount of heat energy, increasing the cost of desalination. Furthermore, after a period of heating operation, scale easily forms in the heat exchange components of the desalination system. Scale accumulation severely affects heat exchange efficiency, reducing heat transfer efficiency and consequently impacting the efficiency and quality of seawater desalination. Summary of the Invention

[0004] To address the aforementioned issues, this application provides a low-temperature multi-effect seawater desalination spray system that can reduce the heat energy required for seawater evaporation and reduce the impact of scale on heat exchange efficiency.

[0005] To achieve the objectives of this application, the following technical solution is provided:

[0006] This application provides a low-temperature multi-effect seawater desalination spray system, including: a shell, an evaporation mechanism, a pressure reduction mechanism, a cleaning mechanism, and a drainage mechanism.

[0007] In one possible implementation, when the system starts operating, externally filtered seawater is stored in a seawater storage tank. The evaporation mechanism includes a processing cylinder located inside the shell. A fixing frame is installed on the outside of the processing cylinder, and the fixing frame is connected to the inner wall of the shell. A heat exchanger is installed inside the processing cylinder. The heat exchanger includes a pair of hollow rings installed inside the processing cylinder, and the pair of hollow rings are arranged vertically. The upper hollow ring is connected to a temperature-conducting liquid discharge pipe, and the lower hollow ring is connected to a temperature-conducting liquid inlet pipe. The free ends of both the temperature-conducting liquid discharge pipe and the temperature-conducting liquid inlet pipe are located outside the shell and are connected to an external circulating heat exchange system. A plurality of second rotating tubes are provided between the pair of hollow rings, and both ends of the second rotating tubes are... The evaporation mechanism includes a second rotary joint, the other side of which is connected to a pair of hollow rings via a connecting pipe. The first pumping component pumps filtered seawater into the treatment cylinder. The first pumping component includes a liquid pump mounted on the top surface of the housing. The inlet of the liquid pump is connected to an external filtered seawater storage tank. The treatment cylinder has a first rotating tube inside, with several flat-nozzle atomizing nozzles connected to its outer side. The top of the first rotating tube passes through the steam outlet and penetrates the top surface of the housing. A first rotary joint is mounted on the top of the first rotating tube. The outlet of the liquid pump is connected to the other side of the first rotary joint. The liquid pump operates intermittently. The heat exchanger evaporates the seawater in the treatment cylinder. A steam outlet is located on the top surface of the treatment cylinder.

[0008] In one possible implementation, the pressure-reducing mechanism includes a piston cylinder mounted on the outside of the housing, with a second piston plate vertically sliding inside the piston cylinder. The pressure-reducing mechanism also includes a first driving member that drives the second piston plate to move. The first driving member includes a dual-axis motor mounted on the outside of the housing via a frame. One output end of the dual-axis motor is drivenly connected to a rotating disk. A connecting rod is rotatably connected to the eccentric side of the rotating disk. The free end of the connecting rod is rotatably connected to the top surface of the second piston plate. The bottom surface of the piston cylinder and the... A first one-way pipe is connected between the shells, and a first one-way valve is installed inside the first one-way pipe. The first one-way valve allows steam to enter the piston cylinder in one direction only. A cylinder body is connected to the top surface of the shell, and a connecting column is installed at the top of the cylinder body. The top of the connecting column has a columnar groove, and a sealing plate is fixedly connected to the groove opening. A second one-way pipe is connected between the side of the piston cylinder and the columnar groove. A second one-way valve is installed inside the second one-way pipe, and the second one-way valve allows steam to enter the connecting column in one direction only. An exhaust pipe is also connected to the columnar groove.

[0009] In one possible implementation, a first piston plate slides vertically inside the cylinder, a spring connects the first piston plate to the inner top of the cylinder, and a spiral temperature-conducting tube is installed in the columnar groove, with the spiral temperature-conducting tube communicating with the inner top of the cylinder.

[0010] In one possible implementation, the cleaning mechanism includes a second pumping component that pumps cleaning fluid into the treatment cylinder. The second pumping component includes a cleaning fluid injection pipe that communicates with the outlet end of the liquid pump, and the free end of the cleaning fluid injection pipe is connected to an external cleaning fluid supply pump. Both the cleaning fluid supply pump and the outlet end of the liquid pump are equipped with check valves. The interior of the treatment cylinder is provided with several scraping blades for scraping off scale from the surface of the heat exchanger.

[0011] In one possible implementation, the cleaning mechanism further includes a second driving member that drives several of the scraping blades to rotate synchronously. The second driving member also drives the first rotating tube to rotate and several second rotating tubes to rotate synchronously. The second driving member includes a second bevel gear mounted on another output end of the dual-axis motor. A first bevel gear is mounted on the top end of the first rotating tube, and the first and second bevel gears are meshed together. A first transmission gear is also mounted on the outer side of the first rotating tube, and second transmission gears are mounted on the outer sides of each of the second rotating tubes. The first and second transmission gears are meshed together. A rotating ring is also rotatably connected to the outer side of the second rotating tube via a bearing. A rectangular strip is fixedly connected to the top surface of the rotating ring, and the scraping blades are fixedly mounted inside the rectangular strip and contact the sidewall of the second rotating tube.

[0012] In one possible implementation, the bottom end of the first rotating tube penetrates the bottom surface of the treatment cylinder and is mounted with a rotating plate via a one-way bearing. The bottom surface of the treatment cylinder has several first openings, and the rotating plate has several second openings. The drainage mechanism periodically discharges unevaporated seawater from the treatment cylinder. The drainage mechanism includes a cylindrical cavity formed on the bottom surface of the shell. The bottom surface of the shell also has a rectangular drain outlet that penetrates the cylindrical cavity. A rotating shaft is rotatably connected inside the cylindrical cavity, and a rotating column is fixedly connected to the outside of the rotating shaft. A temporary storage groove is formed on the top surface of the rotating column. One end of the rotating shaft penetrates the cylindrical cavity and is mounted with a first synchronous pulley. A second synchronous pulley is mounted on the other output end of the dual-shaft motor, and a synchronous belt connects the first and second synchronous pulleys.

[0013] The pressure reduction mechanism provided in this application maintains a low internal pressure within the shell, reducing the heat energy required for subsequent evaporation operations and minimizing energy loss. During evaporation, unevaporated concentrated seawater flows through the first and second ports to the bottom of the shell. As the rotating column rotates, the water is eventually discharged through the drain port, ensuring the shell's sealed environment remains intact. The cleaning mechanism allows for the removal of scale from multiple second rotating tubes via an acidic cleaning solution pump. When the liquid level is above the upper surface of the first transmission gear, the dual-shaft motor rotates forward. During this process, the first rotating tube, through the first transmission gear, causes multiple second transmission gears to rotate, resulting in relative movement between the sidewalls of the second rotating tubes and the cleaning solution, achieving the cleaning purpose. Attached Figure Description

[0014] The accompanying drawings are provided to further understand this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof.

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the low-temperature multi-effect seawater desalination spray system disclosed in an embodiment of the present invention;

[0016] Figure 2 This is a schematic cross-sectional view of the low-temperature multi-effect seawater desalination spray system disclosed in an embodiment of the present invention;

[0017] Figure 3 This is a three-dimensional structural diagram of the evaporation mechanism of the low-temperature multi-effect seawater desalination spray system disclosed in an embodiment of the present invention;

[0018] Figure 4 This is a first cross-sectional structural diagram of the evaporation mechanism of the low-temperature multi-effect seawater desalination spray system disclosed in an embodiment of the present invention;

[0019] Figure 5 This is a second cross-sectional structural diagram of the evaporation mechanism of the low-temperature multi-effect seawater desalination spray system disclosed in an embodiment of the present invention;

[0020] Figure 6 This is a three-dimensional structural schematic diagram of the second rotating pipe of the low-temperature multi-effect seawater desalination spray system disclosed in an embodiment of the present invention;

[0021] Figure 7 This is a schematic cross-sectional view of the low-temperature multi-effect seawater desalination spray system disclosed in an embodiment of the present invention;

[0022] Figure 8 for Figure 7 An enlarged schematic diagram of part A in the middle.

[0023] In the diagram: 1. Shell; 2. Liquid pump; 3. Cylinder; 4. Connecting column; 5. Columnar groove; 6. Sealing plate; 7. Piston cylinder; 8. First one-way pipe; 9. Second one-way pipe; 10. Dual-shaft motor; 11. Synchronous belt; 12. Rotary disc; 13. Connecting rod; 14. Cleaning fluid injection pipe; 15. First rotary joint; 16. First bevel gear; 17. First rotating pipe; 18. Second bevel gear; 19. First piston plate; 20. Spring; 21. Exhaust pipe; 22. Spiral temperature-conducting pipe; 23. Processing cylinder; 24. Fixing element. 25. Frame; 26. Temperature-conducting liquid discharge pipe; 27. Temperature-conducting liquid inlet pipe; 28. Rotating shaft; 29. ​​Columnar cavity; 30. Rotating column; 31. Second piston plate; 32. Steam outlet; 33. First transmission gear; 34. Hollow ring; 35. Second transmission gear; 36. Second rotating pipe; 37. Flat nozzle atomizing nozzle; 38. Rotating plate; 39. First port; 40. Second port; 41. Second rotary joint; 42. Rotating ring; 43. Rectangular strip; 44. Scraper blade; 45. Temporary storage tank; 46. Rectangular drain port. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this application, unless otherwise stated, "multiple" means two or more.

[0026] Example 1

[0027] Figure 1-8 A low-temperature multi-effect seawater desalination spray system provided in this application includes: a shell 1, an evaporation mechanism, a pressure reduction mechanism, a cleaning mechanism, and a drainage mechanism. It should be noted that this application pertains to the core evaporation stage in a multi-effect distillation (MED) seawater desalination process, specifically the spray subsystem located in the evaporator section. In a multi-effect distillation system, each "effect" includes a similar evaporation device, with the steam generated in the previous stage serving as the heat source for the next stage. This application can be used as the evaporation unit for any of the effects.

[0028] In this embodiment, the evaporation mechanism includes a processing cylinder 23 disposed inside the housing 1. A fixing frame 24 is installed on the outside of the processing cylinder 23, and the fixing frame 24 is connected to the inner wall of the housing 1. A heat exchanger is installed inside the processing cylinder 23. The heat exchanger includes a pair of hollow rings 33 installed inside the processing cylinder 23, and the pair of hollow rings 33 are arranged vertically. The upper hollow ring 33 is connected to a temperature-conducting liquid discharge pipe 25, and the lower hollow ring 33 is connected to a temperature-conducting liquid inlet pipe 26. The temperature-conducting liquid discharge pipe 25 and the temperature-conducting liquid inlet pipe 26 are connected to each other. The free ends of the inlet pipe 26 are all located outside the shell 1. The free ends of the heat-conducting liquid outlet pipe 25 and the heat-conducting liquid inlet pipe 26 are connected to the external circulating heat exchange system. Several second rotating pipes 35 are provided between a pair of hollow rings 33. A second rotating joint 40 is installed at both ends of the second rotating pipe 35. The other side of the second rotating joint 40 is connected to a pair of hollow rings 33 through a connecting pipe. The hot heat-conducting liquid enters the lower hollow ring 33 through the heat-conducting liquid inlet pipe 26, and then flows through the connecting pipe and the second rotating joint 40. The seawater enters the second rotating tube 35 to provide heat for seawater evaporation. The heat-conducting liquid that has completed heat exchange flows back to the circulating heat exchange system through the heat-conducting liquid discharge pipe 25. The evaporation mechanism also includes a first pumping component, which pumps the filtered seawater into the processing cylinder 23. The first pumping component includes a liquid pump 2 installed on the top surface of the shell 1. The inlet end of the liquid pump 2 is connected to the external filtered seawater storage tank. The processing cylinder 23 is provided with a first rotating tube 17. Several flat-nozzle atomizing nozzles 36 are connected to the outside of the first rotating tube 17. The top end of the first rotating tube 17 passes through the steam outlet 31 and penetrates the top surface of the shell 1. A first rotary joint 15 is installed at the top end of the first rotating tube 17. The outlet end of the liquid pump 2 is connected to the other side of the first rotary joint 15. The liquid pump 2 is started intermittently. When the liquid pump 2 is started, seawater is drawn in through its inlet end and then enters the first rotating tube 17 through the outlet end and the first rotary joint 15. The flat-nozzle atomizing nozzle 36 connected to the outside of the first rotating tube 17 atomizes seawater and sprays it into the treatment cylinder 23. During this process, the atomized seawater comes into contact with the second rotating tube 35, thereby absorbing heat and evaporating into gas, which is then discharged through the steam outlet 31 on the top surface of the treatment cylinder 23. Subsequently, it can be converted into fresh water through a condenser. The heat exchanger evaporates the seawater in the treatment cylinder 23, and the top surface of the treatment cylinder 23 is provided with a steam outlet 31.

[0029] In one possible implementation, the pressure-reducing mechanism includes a piston cylinder 7 mounted on the outside of the housing 1, with a second piston plate 30 vertically sliding inside the piston cylinder 7. The pressure-reducing mechanism also includes a first driving member that drives the second piston plate 30 to move. The first driving member includes a dual-axis motor 10 mounted on the outside of the housing 1 via a frame. One output end of the dual-axis motor 10 is drivenly connected to a rotating disk 12. A connecting rod 13 is rotatably connected to the eccentric side of the rotating disk 12. The free end of the connecting rod 13 is rotatably connected to the top surface of the second piston plate 30. The bottom surface of the piston cylinder 7 and the housing 1 are connected to the second piston plate 30. A first one-way pipe 8 connects the bodies 1 and 7. A first one-way valve is installed inside the first one-way pipe 8, allowing steam to enter the piston cylinder 7 in one direction only. A cylinder 3 connects to the top surface of the housing 1. A connecting column 4 is installed at the top of the cylinder 3. The top of the connecting column 4 has a columnar groove 5, and a sealing plate 6 is fixedly connected to the opening of the columnar groove 5. A second one-way pipe 9 connects the side of the piston cylinder 7 and the columnar groove 5. A second one-way valve is installed inside the second one-way pipe 9, allowing steam to enter the connecting column 4 in one direction only. The columnar groove 5 is also connected to an exhaust pipe 21. A dual-shaft motor 10 is also present. The right-side output shaft drives the rotating disk 12 to rotate, and the connecting rod 13 connected to the eccentric side of the rotating disk 12 moves accordingly, thereby driving the second piston plate 30 inside the piston cylinder 7 to slide up and down. When the second piston plate 30 moves upward, the air pressure inside the piston cylinder 7 decreases, and the steam inside the shell 1 enters the piston cylinder 7 through the first one-way pipe 8 under the action of pressure difference. When the second piston plate 30 moves downward, the steam inside the piston cylinder 7 enters the columnar groove 5 through the second one-way pipe 9, and is finally discharged through the exhaust pipe 21. Through such a cycle, the inside of the shell 1 is always maintained at a low air pressure state, so that seawater can evaporate at a low temperature, which greatly reduces energy consumption.

[0030] In one possible implementation, a first piston plate 19 slides vertically inside the cylinder 3, and a spring 20 is connected between the first piston plate 19 and the inner top of the cylinder 3. A spiral temperature-conducting tube 22 is installed in the columnar groove 5, and the spiral temperature-conducting tube 22 is connected to the inner top of the cylinder 3.

[0031] In one possible implementation, the cleaning mechanism includes a second pumping component that pumps the cleaning fluid into the treatment cylinder 23. The second pumping component includes a cleaning fluid injection pipe 14 that is connected to the outlet of the liquid pump 2, and the free end of the cleaning fluid injection pipe 14 is connected to an external cleaning fluid supply pump. Both the cleaning fluid supply pump and the outlet of the liquid pump 2 are equipped with check valves. When the external cleaning fluid supply pump is started, it pumps the acidic cleaning fluid into the treatment cylinder 23 through the cleaning fluid injection pipe 14. The interior of the treatment cylinder 23 is provided with several scraping blades 43, which are used to scrape off the scale on the surface of the heat exchanger.

[0032] In one possible implementation, the cleaning mechanism further includes a second drive member that drives several scraping blades 43 to rotate synchronously. The second drive member also drives a first rotating tube 17 to rotate and several second rotating tubes 35 to rotate synchronously. The second drive member includes a second bevel gear 18 mounted on another output end of the dual-axis motor 10. A first bevel gear 16 is mounted on the top of the first rotating tube 17, and the first bevel gear 16 and second bevel gear 18 are meshed together. A first transmission gear 32 is also mounted on the outer side of the first rotating tube 17, and second transmission gears 34 are mounted on the outer side of each of the second rotating tubes 35, meshing together. A rotating ring 41 is rotatably connected to the outer side of the second rotating tube 35 via a bearing. A rectangular strip 42 is fixedly connected to the top surface of the rotating ring 41. The scraping blades 43 are fixedly mounted inside the rectangular strip 42 and contact the sidewalls of the second rotating tubes 35. Using the first bevel gear 16 and the second bevel gear 18, when the dual-axis motor 10... When the output end on the left rotates, it drives the first rotating tube 17 to rotate, and under the action of the first transmission gear 32 and the second transmission gear 34, it causes several second rotating tubes 35 to rotate, so that the atomized seawater can fully contact the second rotating tubes 35, thereby improving the uniformity of heating. At the same time, when treating the scale on the second rotating tubes 35, when the liquid level of the acidic cleaning solution is higher than the top surface of the first transmission gear 32, the side wall of the rotating second rotating tube 35 moves relative to the cleaning solution, achieving the purpose of cleaning. When the whole formed by the scraper blade 43, the rectangular bar 42, and the rotating ring 41 is completely immersed in the cleaning solution, the resistance that needs to be overcome when rotating is large. Therefore, the whole formed by the scraper blade 43, the rectangular bar 42, and the rotating ring 41 cannot rotate synchronously with the second rotating tube 35. The scraper blade 43 and the second rotating tube 35 generate relative movement, and the scraper blade 43 can scrape the second rotating tube 35, further promoting the removal and dissolution of scale on the surface of the rotating tube 35.

[0033] In one possible implementation, the bottom end of the first rotating tube 17 penetrates the bottom surface of the treatment cylinder 23, and a rotating plate 37 is mounted thereon via a one-way bearing. The bottom surface of the treatment cylinder 23 has several first openings 38, and the rotating plate 37 has several second openings 39. When the first rotating tube 17 rotates, it drives the rotating plate 37 to rotate. When the first openings 38 and second openings 39 align during this process, unevaporated seawater or acidic cleaning solution containing dissolved scale falls into the inner bottom of the housing 1. The drainage mechanism periodically discharges the unevaporated seawater from the treatment cylinder 23. The water drainage mechanism includes a cylindrical cavity 28 formed on the bottom surface of the housing 1. A rectangular drain port 45 is also formed on the bottom surface of the housing 1, which penetrates the cylindrical cavity 28. A rotating shaft 27 is rotatably connected inside the cylindrical cavity 28. A rotating column 29 is fixedly connected to the outside of the rotating shaft 27. A temporary storage groove 44 is formed on the top surface of the rotating column 29. One end of the rotating shaft 27 penetrates the cylindrical cavity 28 and is equipped with a first synchronous pulley. A second synchronous pulley is installed on the other output end of the dual-axis motor 10. A synchronous belt 11 is connected between the first and second synchronous pulleys. The other output shaft of the dual-axis motor 10 drives the rotating shaft 27 to rotate through the synchronous belt 11. The rotating column 29 on the outside of the rotating shaft 27 rotates accordingly. The temporary storage groove 44 on the top surface of the rotating column 29 collects concentrated seawater during rotation. When the temporary storage groove 44 rotates to the downward position, the concentrated seawater is discharged from the system. The entire drainage process does not damage the sealed environment inside the housing 1.

[0034] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. This application is not limited to the exact structures described above and illustrated in the accompanying drawings, and it should not be considered that the specific implementation of this application is limited to these descriptions. For those skilled in the art, various changes and modifications made without departing from the concept of this application should be considered to fall within the protection scope of this application.

Claims

1. A low-temperature multi-effect seawater desalination spray system, characterized in that, include: Shell (1), evaporation mechanism, pressure reduction mechanism, cleaning mechanism, drainage mechanism; The evaporation mechanism includes a processing cylinder (23) disposed inside the housing (1). A fixing frame (24) is installed on the outside of the processing cylinder (23). The fixing frame (24) is connected to the inner wall of the housing (1). A heat exchanger is installed inside the processing cylinder (23). The evaporation mechanism also includes a first pumping component, which pumps filtered seawater into the processing cylinder (23). The heat exchanger evaporates the seawater in the processing cylinder (23). A steam outlet (31) is provided on the top surface of the processing cylinder (23). The pressure reducing mechanism includes a piston cylinder (7) installed on the outside of the housing (1), a first rotating tube (17) is provided inside the piston cylinder (7), a second piston plate (30) slides vertically inside the piston cylinder (7), the pressure reducing mechanism also includes a first driving member, the first driving member drives the second piston plate (30) to move, the first driving member includes a dual-axis motor (10) installed on the outside of the housing (1) through a frame, a first one-way tube (8) is connected between the bottom surface of the piston cylinder (7) and the housing (1), and a first one-way valve is installed inside the first one-way tube (8); The cleaning mechanism includes a second pumping component, which pumps the cleaning fluid into the treatment cylinder (23). The piston cylinder (7) is provided with a plurality of scraping blades (43) inside. The scraping blades (43) are used to scrape off the scale on the surface of the heat exchanger. The cleaning mechanism also includes a second driving component, which drives the plurality of scraping blades (43) to rotate synchronously. The drainage mechanism periodically discharges the unevaporated seawater from the treatment cylinder (23); The heat exchanger includes a pair of hollow rings (33) installed inside the processing cylinder (23), and the pair of hollow rings (33) are arranged vertically. The upper hollow ring (33) is connected to a heat-conducting liquid discharge pipe (25), and the lower hollow ring (33) is connected to a heat-conducting liquid inlet pipe (26). The free ends of the heat-conducting liquid discharge pipe (25) and the heat-conducting liquid inlet pipe (26) are located outside the shell (1). A plurality of second rotating pipes (35) are provided between the pair of hollow rings (33). A second rotating joint (40) is installed at both ends of the second rotating pipe (35). The other side of the second rotating joint (40) is connected to the pair of hollow rings (33) through a connecting pipe. The second driving member also drives the plurality of second rotating pipes (35) to rotate synchronously. The second driving component includes a second bevel gear (18) installed at the other output end of the dual-axis motor (10). A first bevel gear (16) is installed at the top of the first rotating tube (17). The first bevel gear (16) and the second bevel gear (18) are meshed together. A first transmission gear (32) is also installed on the outside of the first rotating tube (17). A second transmission gear (34) is installed on the outside of the second rotating tube (35). The first transmission gear (32) and the second transmission gear (34) are meshed together. A rotating ring (41) is also rotatably connected to the outside of the second rotating tube (35) through a bearing. A rectangular strip (42) is fixedly connected to the top surface of the rotating ring (41). The scraper blade (43) is fixedly installed inside the rectangular strip (42) and contacts the side wall of the second rotating tube (35).

2. The low-temperature multi-effect seawater desalination spray system according to claim 1, characterized in that, The first pumping component includes a liquid pump (2) installed on the top surface of the housing (1). The inlet end of the liquid pump (2) is connected to an externally filtered seawater storage tank. A plurality of flat-nozzle atomizing nozzles (36) are connected to the outside of the first rotating tube (17). The top end of the first rotating tube (17) passes through the steam outlet (31) and penetrates the top surface of the housing (1). A first rotary joint (15) is installed on the top end of the first rotating tube (17). The outlet end of the liquid pump (2) is connected to the other side of the first rotary joint (15). The second driving component also drives the first rotating tube (17) to rotate.

3. The low-temperature multi-effect seawater desalination spray system according to claim 2, characterized in that, One of the output ends of the dual-axis motor (10) is connected to a rotating disk (12), and a connecting rod (13) is rotatably connected to the eccentric side of the rotating disk (12). The free end of the connecting rod (13) is rotatably connected to the top surface of the second piston plate (30).

4. A low-temperature multi-effect seawater desalination spray system according to claim 3, characterized in that, The top surface of the housing (1) is connected to a cylinder (3), a connecting column (4) is installed at the top of the cylinder (3), the top of the connecting column (4) has a columnar groove (5), a sealing plate (6) is fixedly connected at the groove opening of the columnar groove (5), a second one-way pipe (9) is connected between the side of the piston cylinder (7) and the columnar groove (5), a second one-way valve is installed inside the second one-way pipe (9), and the columnar groove (5) is also connected to an exhaust pipe (21).

5. A low-temperature multi-effect seawater desalination spray system according to claim 4, characterized in that, The cylinder (3) has a first piston plate (19) that slides vertically inside. A spring (20) is connected between the first piston plate (19) and the inner top of the cylinder (3). A spiral heat-conducting tube (22) is installed in the columnar groove (5), and the spiral heat-conducting tube (22) is connected to the inner top of the cylinder (3).

6. A low-temperature multi-effect seawater desalination spray system according to claim 5, characterized in that, The second pumping component includes a cleaning fluid injection pipe (14) connected to the outlet end of the liquid pump (2), and the free end of the cleaning fluid injection pipe (14) is connected to an external cleaning fluid supply pump.

7. A low-temperature multi-effect seawater desalination spray system according to claim 6, characterized in that, The bottom end of the first rotating tube (17) penetrates the bottom surface of the processing cylinder (23) and is mounted with a rotating plate (37) via a one-way bearing. The bottom surface of the processing cylinder (23) has several first openings (38) and the rotating plate (37) has several second openings (39).

8. A low-temperature multi-effect seawater desalination spray system according to claim 7, characterized in that, The drainage mechanism includes a cylindrical cavity (28) opened on the bottom surface of the housing (1). A rectangular drain port (45) is also opened on the bottom surface of the housing (1). The rectangular drain port (45) passes through the cylindrical cavity (28). A rotating shaft (27) is rotatably connected inside the cylindrical cavity (28). A rotating column (29) is fixedly connected to the outside of the rotating shaft (27). A temporary storage groove (44) is opened on the top surface of the rotating column (29). One end of the rotating shaft (27) passes through the cylindrical cavity (28) and is equipped with a first synchronous pulley. A second synchronous pulley is installed on the other output end of the dual-axis motor (10). A synchronous belt (11) is connected between the first synchronous pulley and the second synchronous pulley.

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