Ultraviolet sterilization device for seawater desalination plant

Abstract

The application relates to a seawater desalination plant ultraviolet sterilization device, belonging to the technical field of ultraviolet sterilization, which comprises a shell and an ultraviolet lamp tube installed in the shell. A cleaning piece for cleaning the surface of the ultraviolet lamp tube is slidably arranged in the shell and abuts against the surface of the ultraviolet lamp tube. A rotating drum is rotatably arranged in the shell, and the rotating axis of the rotating drum is perpendicular to the water flow direction in the shell. A plurality of blades are arranged on the rotating drum along the circumferential direction of the rotating drum, the blades are used for contacting the water flow in the shell to drive the rotating drum to rotate, a transmission piece is arranged on the rotating drum, and the transmission piece is used for driving the cleaning piece to slide when the rotating drum rotates. The application has the advantages of conveniently cleaning the pollutants on the surface of the ultraviolet lamp tube and guaranteeing the sterilization intensity and effect of seawater.

Description

Technical Field

[0001] This application relates to the field of ultraviolet sterilization technology, and in particular to an ultraviolet sterilization device for seawater desalination plants. Background Technology

[0002] With global population growth and accelerated industrialization, the problem of freshwater scarcity is becoming increasingly serious. Seawater desalination, as an effective way to supplement water resources, is an important means to solve this problem. During the seawater desalination process, to eliminate microorganisms in the water, a sterilization device is usually installed between the ultrafiltration permeate tank and the reverse osmosis security filter in the desalination plant to treat the seawater. Traditional seawater desalination plants typically use bactericides with isothiazolinones and bromine as the main components. Although the sterilization effect is good, the price is very expensive, greatly increasing the chemical costs of seawater desalination plants.

[0003] Currently, ultraviolet (UV) sterilization technology is widely used in the effluent sterilization process of wastewater treatment plants and seawater desalination plants due to its high efficiency, environmental friendliness, low operating costs, and lack of secondary pollution. A UV sterilization device mainly consists of a shell with an inlet and an outlet, inside which UV lamps are installed. During operation, water enters the shell through the inlet, passes through the UV lamps, and flows out through the outlet, sterilizing the raw water. However, because seawater is rich in calcium and magnesium ions, scale easily forms on the surface of the UV lamps during long-term use. This scale not only affects the UV penetration rate, thus reducing the sterilization effect, but may also lead to a decrease in equipment operating efficiency. Therefore, to ensure the sterilization intensity and effect of the UV sterilization device, it is necessary to regularly clean the contaminants on the surface of the UV lamps to maintain their optimal functional condition.

[0004] Existing cleaning methods are mostly manual, which greatly increases the complexity and labor intensity of maintenance. Therefore, it is necessary to develop a device that can automatically and effectively clean the surface of ultraviolet lamps to improve the operating efficiency and reliability of the equipment. This invention aims to solve the above problems by providing a seawater desalination plant ultraviolet sterilization device with a reasonable structural design, simple operation, and effective cleaning capability for ultraviolet lamp surface cleaning. Summary of the Invention

[0005] To facilitate the automatic and effective cleaning of contaminants on the surface of ultraviolet lamps, ensure the intensity and effect of seawater sterilization, and improve the operating efficiency and reliability of the equipment, this application provides an ultraviolet sterilization device for seawater desalination plants.

[0006] The ultraviolet sterilization device for seawater desalination plants provided in this application adopts the following technical solution: An ultraviolet sterilization device for a seawater desalination plant includes a housing and an ultraviolet lamp installed inside the housing. A cleaning component for cleaning the surface of the ultraviolet lamp is slidably disposed inside the housing, and the cleaning component abuts against the surface of the ultraviolet lamp. A rotating drum is rotatably disposed inside the housing, and the rotation axis of the rotating drum is perpendicular to the direction of water flow inside the housing. Multiple blades are arranged on the rotating drum along its circumference, and the blades are used to contact the water flow passing through the housing to drive the rotating drum to rotate. A transmission component is disposed on the rotating drum, and the transmission component is used to drive the cleaning component to slide when the rotating drum rotates.

[0007] By adopting the above technical solution, the seawater passing through the shell impacts the blades, driving the rotating drum to rotate. During the rotation of the drum, the cleaning component slides through the transmission component. Since the cleaning component is in contact with the surface of the ultraviolet lamp tube, the cleaning component can effectively clean the contaminants on the surface of the ultraviolet lamp tube during the sliding process. At the same time, the water flowing through the shell is used as power to realize the automatic rotation of the drum, which facilitates the automatic cleaning of the surface of the ultraviolet lamp tube by the cleaning component. This helps to ensure the intensity and effect of seawater sterilization and improve the operating efficiency and reliability of the equipment.

[0008] Preferably, the length direction of the ultraviolet lamp tube is parallel to the rotation axis of the rotating drum. A transmission ring is rotatably disposed inside the housing and is rotatably sleeved on the outside of the ultraviolet lamp tube. The cleaning component is disposed on the transmission ring. The transmission component includes an abutment plate disposed on the rotating drum and a transmission plate disposed on the transmission ring. Multiple transmission plates are disposed along the circumference of the transmission ring. The abutment plate is used to abut against the transmission plate to drive the transmission ring to rotate.

[0009] By adopting the above technical solution, when the water flow inside the shell drives the blades to rotate the drum, the drum drives the contact plate to rotate synchronously. During the rotation, the contact plate intermittently pushes the transmission plate on the transmission ring, thereby intermittently driving the transmission ring to rotate outside the ultraviolet lamp tube. This helps to drive the cleaning component to slide intermittently along the circumference of the ultraviolet lamp tube, which helps to clean the contaminants on the surface of the ultraviolet lamp tube, and thus helps to ensure the strength and effect of seawater sterilization. By intermittently pushing the transmission plate by the contact plate, the frequency of movement of the cleaning component is reduced, so that the cleaning component does not clean the surface of the ultraviolet lamp tube too frequently, thus reducing the wear on the surface of the ultraviolet lamp tube and extending the service life of the ultraviolet lamp tube.

[0010] Preferably, the cleaning component includes a connecting piece disposed on the transmission ring and a cleaning sponge disposed on the connecting piece, wherein the cleaning sponge abuts against the surface of the ultraviolet lamp tube.

[0011] By adopting the above technical solution, when the cleaning sponge comes into contact with the ultraviolet lamp tube and the transmission ring rotates, causing the connecting piece to slide intermittently along the axis of the ultraviolet lamp tube, the cleaning sponge can wipe the surface of the ultraviolet lamp tube. This makes it less likely for scale to accumulate on the surface of the ultraviolet lamp tube during long-term use, thus helping to ensure the strength and effect of the ultraviolet lamp tube's sterilization.

[0012] Preferably, the connecting piece is inserted into the transmission ring, and the transmission ring is provided with a locking element for fixing the connecting piece and the transmission ring relative to each other.

[0013] By adopting the above technical solution, the connecting piece and the transmission ring are fixed relative to each other by the locking component, so as to achieve a detachable connection between the connecting piece and the transmission ring. This makes it easier to remove the connecting piece from the transmission ring and replace the cleaning sponge.

[0014] Preferably, the blade is slidably mounted on the rotating drum, and the sliding direction of the blade is perpendicular to the rotation axis of the rotating drum. The rotating drum is provided with an adjustment component for adjusting the direction in which the blade slides toward or away from the rotating drum.

[0015] By adopting the above technical solution, when seawater flows through the shell and drives the blades to rotate the drum, when the blades on the drum rotate to the upper or lower side of the drum, the adjusting component adjusts the blades to slide towards the direction closer to the drum to reduce the contact area between the blades and the water flow. When the blades on the drum rotate to the lower or upper side of the drum, the adjusting component adjusts the blades to slide away from the drum to increase the contact area between the blades and the water flow. This allows the blades on the upper and lower sides of the drum to be in different states, thereby ensuring that the water flow can smoothly drive the blades to rotate the drum.

[0016] Preferably, a fixed rod is provided inside the housing, and the rotating drum is coaxially rotatably sleeved on the fixed rod. The adjustment assembly includes a first magnet provided on the fixed rod, a second magnet provided on the blade, and an elastic element provided inside the rotating drum. The first magnet is used to attract the second magnet and drive the blade to slide towards the direction closer to the fixed rod. The central angle of the first magnet is less than or equal to 180 degrees. The elastic element is used to pull the blade to slide away from the fixed rod. The attraction force between the first magnet and the second magnet is greater than the elastic force of the elastic element.

[0017] By adopting the above technical solution, when the rotating drum drives the blade to rotate until the second magnet and the first magnet are aligned, the first magnet attracts the second magnet and drives the corresponding blade to slide towards the direction closer to the rotating drum, so as to reduce the contact area between the corresponding blade and the water flow. When the rotation drives the blade to rotate until the second magnet and the first magnet are misaligned, the corresponding blade slides away from the rotating drum under the tension of the elastic element, thereby extending out of the rotating drum and increasing the contact area between the corresponding blade and the water flow.

[0018] Preferably, the elastic element includes a spring for pulling the blade to slide away from the fixed rod, one end of the spring is disposed inside the rotating cylinder and the other end is disposed on the blade, and the attraction force between the first magnet and the second magnet is greater than the elastic force of the spring.

[0019] By adopting the above technical solution, the blades are pulled by springs to slide away from the rotating drum, which helps to drive the corresponding blades out of the rotating drum, thereby increasing the contact area between the corresponding blades and the water flow.

[0020] Preferably, the first magnet is located on the upper side of the fixing rod.

[0021] By adopting the above technical solution, when the blade rotates to the lower side of the fixed rod, the second magnet is misaligned with the first magnet to extend out of the rotating cylinder, so that even when the water inside the shell is not fully filled, the water flow can still drive the blade and the rotating cylinder to rotate continuously.

[0022] Preferably, the housing has a water inlet and a water outlet, and the rotating drum is located on the side of the ultraviolet lamp tube near the water inlet of the housing.

[0023] By adopting the above technical solution, the seawater passes through the rotating drum first and then through the ultraviolet lamp tube. On the one hand, this helps to ensure the sterilization effect. On the other hand, the scale buildup on the rotating drum will first accumulate the minerals in the seawater, which in turn helps to reduce the deposition of minerals on the ultraviolet lamp tube.

[0024] Preferably, multiple ultraviolet lamps are provided, and the distance from the central axis of the multiple ultraviolet lamps to the central axis of the rotating drum is equal.

[0025] By adopting the above technical solutions, it is helpful to ensure the sterilization effect of ultraviolet lamps on seawater.

[0026] In summary, this application includes the following beneficial technical effects: During use, seawater flowing through the shell impacts the blades, driving the rotating drum to rotate. During the rotation of the drum, the cleaning component slides through the transmission components. Since the cleaning component is in contact with the surface of the ultraviolet lamp tube, it can effectively clean the contaminants on the surface of the ultraviolet lamp tube during the sliding process. At the same time, the water flowing through the shell is used as power to realize the automatic rotation of the drum, which facilitates the automatic cleaning of the surface of the ultraviolet lamp tube by the cleaning component. This helps to ensure the intensity and effect of seawater sterilization and improve the operating efficiency and reliability of the equipment. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.

[0028] Figure 2 This is a cross-sectional view of the overall structure of Embodiment 1 of this application.

[0029] Figure 3 This is a partial structural schematic diagram of Embodiment 1 of this application.

[0030] Figure 4 This is a partial exploded cross-sectional view of Embodiment 1 of this application.

[0031] Figure 5 This is a partial structural cross-sectional view of Embodiment 2 of this application.

[0032] Explanation of reference numerals in the attached drawings: 1. Housing; 101. First mounting housing; 102. Second mounting housing; 2. Ultraviolet lamp tube; 3. Cleaning component; 31. Connecting piece; 32. Cleaning sponge; 4. Rotating drum; 5. Blade; 6. Transmission component; 61. Abutment piece; 62. Transmission piece; 7. Transmission ring; 8. Fixing rod; 9. First magnet; 10. Second magnet; 11. Spring; 12. Ultraviolet mounting base; 13. Sealing cover plate; 14. Sliding groove; 15. Support block; 16. Support groove; 17. Flange; 18. Water inlet end; 19. Water outlet end; 20. Fixing ring; 21. Through hole; 22. Adjusting piece; 23. Adjusting hole; 24. Connecting rod; 25. Pulling spring; 26. Rotating drum two; 27. Blade two. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0034] Example 1: This application discloses an ultraviolet sterilization device for seawater desalination plants. (Refer to...) Figure 1 and Figure 2 The ultraviolet sterilization device for seawater desalination plants includes a housing 1 and an ultraviolet lamp 2. The housing 1 includes a first mounting shell 101 and a second mounting shell 102. The second mounting shell 102 is connected and passes through the first mounting shell 101. Specifically, the first mounting shell 101 and the second mounting shell 102 are integrally formed. The cross-sections of the first mounting shell 101 and the second mounting shell 102 are both circular. The central axis of the first mounting shell 101 is perpendicular to the central axis of the second mounting shell 102. The second mounting shell 102 is located in the middle of the first mounting shell 101. Both the first mounting shell 101 and the second mounting shell 102 are made of stainless steel.

[0035] Reference Figure 1Both ends of the first mounting shell 101 and the second mounting shell 102 are fixed with flanges 17. The first mounting shell 101 is connected between the ultrafiltration permeate tank and the reverse osmosis security filter of the seawater desalination plant through the flanges 17 at both ends. The first mounting shell 101 has an inlet end 18 and an outlet end 19. The inlet end 18 is connected to the ultrafiltration permeate tank of the seawater desalination plant through a pipeline, and the outlet end 19 is connected to the reverse osmosis security filter of the seawater desalination plant through a pipeline. A UV mounting seat 12 is fixedly installed on the flange 17 at one end of the second mounting shell 102, and a sealing cover plate 13 is installed on the flange 17 at the other end.

[0036] Reference Figure 2 and Figure 3 The ultraviolet lamp 2 is installed between the ultraviolet mounting base 12 and the sealing cover 13. The ultraviolet lamp 2 spans the inside of the first mounting shell 101. The length direction of the ultraviolet lamp 2 is perpendicular to the water flow direction inside the first mounting shell 101. A cleaning component 3 for cleaning the surface of the ultraviolet lamp 2 is slidably arranged inside the second mounting shell 102. The cleaning component 3 moves along the circumference of the ultraviolet lamp 2 and abuts against the surface of the ultraviolet lamp 2.

[0037] Reference Figure 2 and Figure 3 A fixing rod 8 is fixed between the UV mounting base 12 and the sealing cover 13. The length direction of the fixing rod 8 is parallel to the length direction of the UV lamp tube 2. A rotating cylinder 4 is rotatably mounted on the fixing rod 8. The rotation axis of the rotating cylinder 4 is parallel to the length direction of the UV lamp tube 2. Multiple blades 5 are arranged around the rotating cylinder 4. The blades 5 are used to contact the water flow passing through the first mounting shell 101 to drive the rotating cylinder 4 to rotate. A transmission component 6 is provided on the rotating cylinder 4. The transmission component 6 is used to drive the cleaning component 3 to slide when the rotating cylinder 4 rotates. The fixing rod 8, the rotating cylinder 4, and the blades 5 are all made of stainless steel. The fixing rod 8 is fixedly installed between the UV mounting base 12 and the sealing cover 13, which is convenient for disassembly and maintenance.

[0038] In use, seawater enters the first mounting shell 101 from the inlet 18. The seawater passing through the first mounting shell 101 impacts the blades 5, driving the rotating drum 4 to rotate. During the rotation of the rotating drum 4, the cleaning component 3 is driven to slide along the circumference of the ultraviolet lamp tube 2 via the transmission component 6. Since the cleaning component 3 is in contact with the surface of the ultraviolet lamp tube 2, the cleaning component 3 can effectively clean the contaminants on the surface of the ultraviolet lamp tube 2 during the sliding process. At the same time, the water flow passing through the first mounting shell 101 is used as power to realize the automatic rotation of the rotating drum 4, which facilitates the automatic cleaning of the surface of the ultraviolet lamp tube 2 by the cleaning component 3. This helps to ensure the intensity and effect of seawater sterilization and improve the operating efficiency and reliability of the equipment.

[0039] Reference Figure 2 and Figure 3To facilitate cleaning of the surface of the ultraviolet lamp tube 2, a drive ring 7 is rotatably mounted on both the ultraviolet mounting base 12 and the sealing cover plate 13. The rotation axis of the drive ring 7 is parallel to the length direction of the ultraviolet lamp tube 2. The drive rings 7 on the ultraviolet mounting base 12 and the sealing cover plate 13 correspond one-to-one with the ultraviolet lamp tube 2, and are coaxially rotatably sleeved on the corresponding ultraviolet lamp tube 2. The cleaning component 3 includes a connecting piece 31 and a cleaning sponge 32. The connecting piece 31 corresponds one-to-one with the ultraviolet lamp tube 2, and its length direction is parallel to the length direction of the ultraviolet lamp tube 2. The connecting piece 31 is positioned between the drive rings 7 at both ends of the corresponding ultraviolet lamp tube 2. When the drive ring 7 rotates, it drives the connecting piece 31 to slide circumferentially along the ultraviolet lamp tube 2. The drive rings 7 and the connecting piece 31 are made of stainless steel.

[0040] Reference Figure 2 and Figure 3 The cleaning sponge 32 is fixed to the side of the connecting piece 31 near the surface of the ultraviolet lamp tube 2. The cleaning sponge 32 abuts against the surface of the ultraviolet lamp tube 2. The transmission component 6 is used to drive the transmission ring 7 to rotate when the rotating drum 4 rotates, thereby driving the connecting piece 31 to slide circumferentially along the ultraviolet lamp tube 2. Because the cleaning sponge 32 is soft, the connecting piece 31 drives the cleaning sponge 32 to move circumferentially along the ultraviolet lamp tube 2, and the cleaning sponge 32 is less likely to cause wear to the surface of the ultraviolet lamp tube 2 when wiping it. In other embodiments, the cleaning sponge 32 can be replaced by a cleaning brush.

[0041] In use, the rotating drum 4 is driven to rotate by the transmission component 6, which in turn drives the transmission ring 7 to rotate. When the transmission ring 7 rotates, it drives the connecting piece 31 and the cleaning sponge 32 to slide along the circumference of the ultraviolet lamp tube 2. This helps the cleaning sponge 32 to wipe the surface of the ultraviolet lamp tube 2, effectively cleaning the contaminants on the surface of the ultraviolet lamp tube 2. This helps to ensure the strength and effect of seawater sterilization and improve the operating efficiency and reliability of the equipment.

[0042] Reference Figure 3 To facilitate the rotation of the drive ring 7 when the rotating drum 4 rotates, thereby driving the connecting piece 31 and the cleaning sponge 32 to slide along the circumference of the ultraviolet lamp tube 2, the transmission component 6 includes an abutment piece 61 and a transmission piece 62. The abutment piece 61 is fixed on the outer wall of the rotating drum 4 and is arranged radially along the rotating drum 4. There are two abutment pieces 61, and the blade 5 is located between the two abutment pieces 61. The abutment pieces 61 correspond one-to-one with the drive rings 7 at both ends of the ultraviolet lamp tube 2, and the abutment pieces 61 are aligned with the corresponding drive rings 7. Multiple transmission pieces 62 are arranged along the circumference of the drive ring 7. The abutment piece 61 is used to abut against the corresponding transmission piece 62 on the drive ring 7 to drive the drive ring 7 to rotate. The distance from the side of the drive piece 62 away from the drive ring 7 to the surface of the drive ring 7 is less than 10mm, so that the transmission piece 62 will not drive the drive ring 7 to rotate under the action of water flow. The abutment piece 61 and the transmission piece 62 are both made of stainless steel.

[0043] When the rotating drum 4 drives the abutment plate 61 to rotate continuously, the abutment plate 61 will intermittently abut against the transmission plate 62 on the transmission ring 7, pushing the transmission ring 7 to rotate. This will cause the connecting plate 31 and the cleaning sponge 32 to move intermittently along the circumference of the corresponding ultraviolet lamp tube 2, reducing the frequency of rotation of the transmission ring 7, and thus reducing the frequency of movement of the connecting plate 31 and the cleaning sponge 32. This prevents the cleaning sponge 32 from wiping the surface of the ultraviolet lamp tube 2 too frequently, making it less likely to cause wear on the surface of the ultraviolet lamp tube 2 and extending the service life of the ultraviolet lamp tube 2.

[0044] Reference Figure 3 The connecting piece 31 is inserted into the transmission ring 7. The transmission ring 7 is provided with a locking element for fixing the connecting piece 31 relative to the transmission ring 7. The locking element includes a screw (not shown in the figure) threaded onto the transmission ring 7. The connecting piece 31 and the transmission ring 7 are detachably connected by the screw, which facilitates the removal of the connecting piece 31 to replace the cleaning sponge 32. In other embodiments, the screw can be replaced with a bolt, rivet, or clamping bolt, etc.

[0045] Reference Figure 2 and Figure 3 The rotating drum 4 is located near the water inlet 18 of the housing 1, close to the ultraviolet lamp tube 2 (refer to...). Figure 1 On one side of the rotating drum 4, the water flowing through the blades 5 then passes through the ultraviolet lamp 2, ensuring a sterilization effect. Furthermore, the rotating drum 4 contacts the seawater first, causing minerals from the seawater to accumulate on it, thus helping to reduce mineral deposition on the ultraviolet lamp 2. Driven by the blades 5, the rotating drum 4 rolls in the water flow, promoting uniform mixing of the seawater and allowing the water to more fully contact the ultraviolet lamp 2. This extends the residence time in the ultraviolet lamp 2 to some extent, reducing dead zones and improving the sterilization effect.

[0046] Reference Figure 2 and Figure 3 Multiple ultraviolet lamps 2 are provided, and the distance from the central axis of the multiple ultraviolet lamps 2 to the central axis of the rotating drum 4 is equal, so that when the rotating drum 4 rotates, the transmission ring 7 on the ultraviolet lamp 2 is driven to rotate through the abutment plate 61. In this embodiment, two ultraviolet lamps 2 are provided, and the two ultraviolet lamps 2 are arranged at intervals from top to bottom. Each ultraviolet lamp 2 spans the first mounting shell 101, and the fixing rod 8 is located between the two ultraviolet lamps 2, which helps to ensure the sterilization effect on the seawater passing through the first mounting shell 101. In other embodiments, the number of ultraviolet lamps 2 can be set according to the diameter of the first mounting shell 101.

[0047] Reference Figure 3 and Figure 4The blade 5 is slidably mounted on the rotating cylinder 4. The sliding direction of the blade 5 is perpendicular to the rotation axis of the rotating cylinder 4. The rotating cylinder 4 is provided with a sliding groove 14 for the blade 5 to slide. The sliding groove 14 passes through the inner wall and outer wall of the rotating cylinder 4. The rotating cylinder 4 is provided with an adjustment component for adjusting the direction of the blade 5 to slide towards or away from the rotating cylinder 4.

[0048] Reference Figure 3 and Figure 4 To facilitate the adjustment of the blade 5 to slide towards or away from the rotating drum 4, the adjustment assembly includes a first magnet 9, a second magnet 10, and an elastic element. The first magnet 9 is fixedly embedded on the outer wall of the fixed rod 8, and the outer surface of the first magnet 9 is set with the same arc surface as the outer surface of the fixed rod 8. The central angle of the first magnet 9 is less than or equal to 180 degrees. In this embodiment, the central angle of the first magnet 9 is 180 degrees, and the first magnet 9 is embedded on the upper side of the fixed rod 8. The second magnet 10 corresponds one-to-one with the blade 5 and is fixed on the side of the corresponding blade 5 near the fixed rod 8. The first magnet 9 is used to attract the second magnet 10 and drive the blade 5 to slide towards the rotating drum 4. The elastic element is set inside the rotating drum 4 and is used to pull the blade 5 to slide away from the rotating drum 4. The attraction force between the first magnet 9 and the second magnet 10 is greater than the elastic force of the elastic element.

[0049] Reference Figure 3 and Figure 4 Specifically, to facilitate the sliding of the blade 5 away from the rotating cylinder 4, support blocks 15 are fixed on both sides of the blade 5 near the fixed rod 8. A support groove 16 is provided on the side wall of the sliding groove 14 to slide in cooperation with the support blocks 15. The elastic element includes a spring 11, which corresponds one-to-one with the support blocks 15 on the blade 5. The extension direction of the spring 11 is parallel to the sliding direction of the corresponding blade 5. One end of the spring 11 is fixed to the inner wall of the support groove 16 away from the fixed rod 8, and the other end is fixed to the support block 15. The first magnet 9 and the second magnet 10... The adsorption force is greater than the sum of the elastic forces of the two springs 11. When the first magnet 9 and the second magnet 10 are separated, the corresponding blade 5 extends out of the rotating cylinder 4 under the pulling force of the spring 11, and the corresponding support block 15 abuts against the inner wall of the support groove 16. When the first magnet 9 and the second magnet 10 are adsorbed and engaged, the side of the blade 5 away from the fixing rod 8 is on the same arc surface as the outer wall of the rotating cylinder 4, and the fixing rod 8 and the rotating cylinder 4 are tightly abutted to ensure that seawater does not easily enter the interior of the rotating cylinder 4, so that the spring 11, the first magnet 9 and the second magnet 10 do not easily affect the water quality of the seawater.

[0050] In use, the blade 5 located on the lower side of the fixed rod 8 is misaligned with the first magnet 9, thus extending out of the rotating drum 4 under the tension of the corresponding spring 11. After being impacted by the water flow inside the first mounting shell 101, the blade 5 extending out of the rotating drum 4 is pushed to rotate. When the blade 5 rotates to the upper side of the fixed rod 8, the corresponding second magnet 10 aligns with the first magnet 9 on the fixed rod 8. Thus, under the attraction of the first magnet 9, the second magnet 10 drives the corresponding blade 5 to slide towards the fixed rod 8, stretching the spring 11 until the first magnet 9 and the second magnet 10 are attracted and engaged. At this time, the blade 5 is retracted into the rotating drum 4. As the blade 5 drives the rotating drum 4 to rotate continuously, the blade 5 moves again to the lower side of the fixed rod 8, causing the corresponding second magnet 10 to be misaligned with the first magnet 9, and the blade 5 extends out of the rotating drum 4. This process is repeated, so that only the blade 5 on the lower side of the fixed rod 8 can come into contact with the flowing water, ensuring that the rotating drum 4 can continuously rotate in the same direction under the impact of the flowing water, so as to drive the cleaning part 3 on the transmission ring 7 to move intermittently.

[0051] The implementation principle of Embodiment 1 of this application is as follows: During use, seawater enters the first mounting shell 101 through the water inlet 18. Then, the seawater pushes the blade 5 on the lower side of the fixed rod 8 to drive the rotating drum 4 to rotate. When the blade 5 rotates to the upper side of the fixed rod 8, the corresponding second magnet 10 aligns with the first magnet 9 on the fixed rod 8. Then, under the attraction of the first magnet 9, the second magnet 10 drives the corresponding blade 5 to slide towards the fixed rod 8 until the first magnet 9 and the second magnet 10 are attracted and engaged, so that the blade 5 is retracted into the rotating drum 4. As the blade 5 drives the rotating drum 4 to continue rotating, the blade 5 rotates to the lower side of the fixed rod 8 again. At this time, the corresponding second magnet 10 disengages from the first magnet 9, and the blade 5 extends out of the rotating drum 4 under the pull of the spring 11. This process is repeated to realize that the rotating drum 4 drives the abutment plate 61 to rotate continuously. At the same time, it can promote the uniform mixing of seawater, so that the water flow can contact the ultraviolet lamp tube 2 more fully, prolong the residence time in the ultraviolet lamp tube 2 to a certain extent, reduce the dead zone of water flow, and improve the sterilization effect.

[0052] During the rotation of the drum 4, the abutment piece 61 intermittently abuts against the transmission piece 62 on the transmission ring 7, pushing the transmission ring 7 to rotate intermittently. When the transmission ring 7 rotates, it drives the connecting piece 31 and the cleaning sponge 32 to slide intermittently along the circumference of the ultraviolet lamp tube 2. Since the cleaning sponge 32 abuts against the surface of the corresponding ultraviolet lamp tube 2, it is easy for the cleaning sponge 32 to wipe the surface of the ultraviolet lamp tube 2, effectively cleaning the contaminants on the surface of the ultraviolet lamp tube 2. At the same time, the water flowing through the first mounting shell 101 is used as power to realize the automatic rotation of the drum 4, so that the cleaning sponge 32 automatically cleans the surface of the ultraviolet lamp tube 2, thereby helping to ensure the intensity and effect of seawater sterilization and improve the operating efficiency and reliability of the equipment. The intermittent sliding of the cleaning sponge 32 on the connecting piece 31 can control the cleaning frequency within a certain range, making it less likely to cause wear on the surface of the ultraviolet lamp tube 2.

[0053] After being sterilized by the ultraviolet lamp tube 2, the raw water flows out from the outlet 19 and is then transported through pipelines to the reverse osmosis security filter of the seawater desalination plant for seawater desalination.

[0054] Example 2: Reference Figure 5 The difference between this embodiment and Embodiment 1 is that: the two ends of the ultraviolet lamp tube 2 are coaxially fixedly sleeved with fixing rings 20, and the rotating cylinder 26 is rotatably sleeved on the fixing rings 20. The rotation axis of the rotating cylinder 26 is parallel to the length direction of the corresponding ultraviolet lamp tube 2. The rotating cylinder 26 corresponds to the transmission ring 7 near one end. The transmission component 6 includes connecting rods 24. Multiple connecting rods 24 are distributed along the circumference of the transmission ring 7. One end of the connecting rod 24 is fixed on the corresponding transmission ring 7, and the other end is fixed on the corresponding rotating cylinder 26, so as to realize the fixed connection between the rotating cylinder 26 and the corresponding transmission ring 7, so that the rotating cylinder 26 can drive the corresponding transmission ring 7 to rotate when it rotates.

[0055] Reference Figure 5 Multiple through holes 21 are provided on the blade 27, and the multiple through holes 21 penetrate the blade 27. An adjusting plate 22 is slidably arranged inside the blade 27. The sliding direction of the adjusting plate 22 is perpendicular to the rotation axis of the rotating cylinder 26. The adjusting plate 22 slides towards or away from the fixed ring 20. The two outer walls of the adjusting plate 22 abut against the two inner walls of the blade 27 so that seawater will not enter the interior of the blade 27.

[0056] Reference Figure 5 The adjusting plate 22 has multiple adjusting holes 23, each corresponding to a through hole 21. A pulling spring 25 is installed inside the blade 27 to move the adjusting plate 22 so that the adjusting holes 23 align with the corresponding through holes 21. The pulling spring 25 is located on the side of the adjusting plate 22 away from the fixing ring 20. One end of the pulling spring 25 is fixed to the inner wall of the blade 27, and the other end is fixed to the adjusting plate 22. The rotating drum 26 has an opening (not shown in the figure) on the side near the fixing ring 20, which corresponds to one of the adjusting plates 22. A first magnetic absorbing piece (not shown in the figure) is fixed on the side of the fixing ring 20 near the fixing ring 20. A second magnetic absorbing piece (not shown in the figure) is embedded on the lower side of the fixing ring 20. The central angle of the second magnetic absorbing piece is 180 degrees. The second magnetic absorbing piece is used to attract the first magnetic absorbing piece and drive the adjusting piece 22 to move towards the fixing ring 20 so that the adjusting hole 23 is away from the corresponding through hole 21. The attraction force between the second magnetic absorbing piece and the first magnetic absorbing piece is greater than the pulling force of the pulling spring 25. The impact force of the water flow on the blade 27 is greater than the attraction force between the first magnetic absorbing piece and the second magnetic absorbing piece.

[0057] The implementation principle of Embodiment 2 of this application is as follows: When the water flow passing through the first mounting shell 101 impacts the blade 27, it will push the blade 27 to drive the corresponding rotating drum 26 to rotate. Since the water flow direction is fixed, the rotating drums 26 on both sides of the ultraviolet lamp tube 2 rotate in the same direction. The rotating drum 26 drives the corresponding transmission ring 7 to rotate synchronously through the corresponding connecting rod 24, thereby realizing that the transmission ring 7 drives the connecting piece 31 and the cleaning sponge 32 to move along the circumference of the corresponding ultraviolet lamp tube 2, thereby wiping the outer wall of the ultraviolet lamp tube 2 and ensuring the sterilization effect of the ultraviolet lamp tube 2.

[0058] When the rotating drum 26 drives the blade 27 to rotate until the blade 27 is located below the fixed ring 20, the corresponding blade 27 aligns with the second magnetic plate on the fixed ring 20. Then, the second magnetic plate on the fixed ring 20 will attract the first magnetic plate, causing the adjusting plate 22 to slide towards the fixed ring 20, gradually stretching the pull spring 25. The adjusting hole 23 gradually moves away from the corresponding through hole 21, so that the adjusting plate 22 closes the through hole 21, thereby increasing the contact area between the corresponding blade 27 and the flowing water. When the rotating drum 26 drives the blade 27 to rotate... When the blade 27 is positioned above the fixed ring 20, the blade 27 and the second magnetic plate are misaligned. The stretched spring 25 will pull the adjusting plate 22 to slide away from the fixed ring 20, so that the adjusting hole 23 gradually aligns with the corresponding through hole 21. This reduces the contact area between the blade 27 and the water flow, making the contact area between the blade 27 below the fixed ring 20 and the water flow greater than that between the blade 27 above the fixed ring 20. This ensures that the blade 27 can drive the rotating drum 26 to rotate continuously in one direction.

[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A UV sterilization device for a seawater desalination plant, comprising a housing (1) and a UV lamp (2) installed inside the housing (1), characterized in that: A cleaning component (3) for cleaning the surface of the ultraviolet lamp tube (2) is slidably disposed inside the housing (1). The cleaning component (3) abuts against the surface of the ultraviolet lamp tube (2). A rotating cylinder (26) is rotatably disposed inside the housing (1). The rotation axis of the rotating cylinder (26) is perpendicular to the water flow direction inside the housing (1). Multiple blades (27) are disposed on the rotating cylinder (26) along its circumference. The blades (27) are used to contact the water flow passing through the housing (1) to drive the rotating cylinder (26) to rotate. A transmission component (6) is disposed on the rotating cylinder (26). The transmission component (6) is used to drive the cleaning component to slide when the rotating cylinder (26) rotates. The length direction of the ultraviolet lamp tube (2) is parallel to the rotating cylinder (26). The rotation axis of the ultraviolet lamp tube (2) is rotated. A transmission ring (7) is rotatably arranged inside the housing (1). The transmission ring (7) is rotatably sleeved on the outside of the ultraviolet lamp tube (2). The cleaning component (3) is arranged on the transmission ring (7). The two ends of the ultraviolet lamp tube (2) are coaxially fixedly sleeved with fixing rings (20). The rotating cylinder (26) is rotatably sleeved on the fixing ring (20). The rotating cylinder (26) corresponds to the transmission ring (7) near one end. The transmission component (6) includes a connecting rod (24). One end of the connecting rod (24) is fixed on the corresponding transmission ring (7), and the other end is fixed on the corresponding rotating cylinder (26). The blade (27) has multiple through holes (21). The multiple through holes (21) penetrate the blade (27). 7) An adjusting plate (22) is slidably disposed inside the second blade (27). The sliding direction of the adjusting plate (22) is perpendicular to the rotation axis of the second rotating cylinder (26). The adjusting plate (22) slides towards or away from the fixed ring (20). The two outer walls of the adjusting plate (22) abut against the two inner walls of the second blade (27). The adjusting plate (22) has multiple adjusting holes (23), which correspond one-to-one with the through holes (21). A pulling spring (25) is disposed inside the second blade (27) for pulling the adjusting plate (22) to move so that the adjusting holes (23) are aligned with the corresponding through holes (21). The pulling spring (25) is located on the side of the adjusting plate (22) away from the fixed ring (20). On one side, one end of the pull spring (25) is fixed to the inner wall of the blade (27), and the other end is fixed to the adjusting plate (22); the rotating cylinder (26) has an opening on the side near the fixing ring (20), and the opening corresponds one-to-one with the adjusting plate (22). The adjusting plate (22) is fixed with a first magnetic plate on the side near the fixing ring (20), and a second magnetic plate is embedded on the lower side of the fixing ring (20). The central angle of the second magnetic plate is 180 degrees. The second magnetic plate is used to attract the first magnetic plate and drive the adjusting plate (22) to move towards the direction near the fixing ring (20) so that the adjusting hole (23) is away from the corresponding through hole (21); the attraction force between the second magnetic plate and the first magnetic plate is greater than the pulling force of the pull spring (25).

2. The ultraviolet sterilization device for seawater desalination plants according to claim 1, characterized in that: The cleaning component (3) includes a connecting piece (31) disposed on the transmission ring (7) and a cleaning sponge (32) disposed on the connecting piece (31), wherein the cleaning sponge (32) abuts against the surface of the ultraviolet lamp tube (2).

3. The ultraviolet sterilization device for seawater desalination plants according to claim 2, characterized in that: The connecting piece (31) is inserted into the transmission ring (7), and the transmission ring (7) is provided with a locking element for fixing the connecting piece (31) and the transmission ring (7) relative to each other.

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