Ultraviolet sterilization device for seawater desalination plant

Abstract

The invention relates to an ultraviolet sterilization device for a seawater desalination plant, and belongs to the technical field of ultraviolet sterilization, the ultraviolet sterilization device for the seawater desalination plant comprises a shell and an ultraviolet lamp tube mounted in the shell, a cleaning part for cleaning the surface of the ultraviolet lamp tube is slidably arranged in the shell, and the cleaning part abuts against the surface of the ultraviolet lamp tube. A rotating drum is rotatably arranged in the shell, 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 in the circumferential direction of the rotating drum, the blades are used for making contact with water flow passing through the interior of the shell to drive the rotating drum to rotate, and a transmission part is arranged on the rotating drum. And the transmission part is used for driving the cleaning part to slide when the rotary drum rotates. The device has the advantages that pollutants on the surface of the ultraviolet lamp tube are convenient to clean, and the seawater sterilization strength and effect are guaranteed.

Description

Technical Field

[0001] The present application relates to the field of ultraviolet sterilization technology, and in particular to an ultraviolet sterilization device for a seawater desalination plant. Background Art

[0002] With the growth of the global population and the acceleration of the industrialization process, the shortage of fresh water resources is becoming increasingly serious. As an effective way to supplement water resources, seawater desalination is an important means to solve the shortage of fresh water resources. In the process of seawater desalination, in order to eliminate microorganisms in the water, a sterilization device is usually installed between the ultrafiltration water production tank and the reverse osmosis security filter of the seawater desalination plant to sterilize the seawater. Traditional seawater desalination plants usually use bactericides with isothiazolinone and bromine as the main ingredients. Although the bactericidal effect is good, the price is very expensive, which greatly increases the cost of seawater desalination plant reagents.

[0003] At present, ultraviolet sterilization technology is widely used in the effluent sterilization process of sewage treatment plants and desalination plants because of its high efficiency, environmental protection, low operating cost and no secondary pollution. The ultraviolet sterilization device mainly includes a shell, which has an inlet end and an outlet end, and an ultraviolet lamp is arranged in the shell. When in use, the water flows into the shell through the inlet end of the shell, flows out from the outlet end after passing through the ultraviolet lamp, and the raw water flowing through is sterilized by the ultraviolet lamp. However, since seawater is rich in calcium and magnesium ions, the surface of the ultraviolet lamp is prone to scaling during long-term use. These scaling substances will not only affect the penetration rate of ultraviolet rays, thereby reducing the sterilization effect, but may also lead to a decrease in the operating efficiency of the equipment. Therefore, in order to ensure the sterilization intensity and effect of the ultraviolet sterilization device, it is necessary to regularly clean the pollutants on the surface of the ultraviolet lamp to maintain its optimal functional state.

[0004] Most existing cleaning methods are manual cleaning, 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 the lamp tube to improve the operating efficiency and reliability of the equipment. The present invention aims to solve the above problems and provide a seawater desalination plant ultraviolet disinfection device with reasonable structural design, simple operation and effective cleaning of the surface of the ultraviolet lamp tube. Summary of the invention

[0005] In order to automatically and effectively clean pollutants on the surface of ultraviolet lamps, ensure the intensity and effect of seawater sterilization, and improve the operating efficiency and reliability of equipment, the present application provides an ultraviolet sterilization device for seawater desalination plants.

[0006] The present application provides a desalination plant ultraviolet sterilization device using the following technical solutions: A UV sterilization device for a seawater desalination plant comprises a shell and an ultraviolet lamp installed in the shell, a cleaning piece for cleaning the surface of the ultraviolet lamp is slidably arranged in the shell, the cleaning piece abuts against the surface of the ultraviolet lamp, a rotating drum is rotatably arranged in the shell, the rotating axis of the rotating drum is perpendicular to the direction of water flow in the shell, a plurality of blades are arranged on the rotating drum along its circumference, the blades are used to contact the water flow passing through the shell to drive the rotating drum to rotate, and a transmission piece is arranged on the rotating drum, the transmission piece is used to drive the cleaning piece to slide when the rotating drum rotates.

[0007] By adopting the above technical solution, the seawater passing through the shell will impact the blades to drive the drum to rotate. During the rotation of the drum, the cleaning member is driven to slide through the transmission member. Since the cleaning member abuts against the surface of the ultraviolet lamp tube, the pollutants on the surface of the ultraviolet lamp tube can be effectively cleaned during the sliding process of the cleaning member. At the same time, the automatic rotation of the drum can be achieved by using the water flow passing through the shell as the power, so that the cleaning member can automatically clean the surface of the ultraviolet lamp tube, which helps to ensure the sterilization intensity and effect of seawater 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 arranged in the shell, the transmission ring is rotatably sleeved outside the ultraviolet lamp tube, the cleaning member is arranged on the transmission ring, the transmission member includes an abutment plate arranged on the rotating drum and a transmission plate arranged on the transmission ring, a plurality of transmission plates are arranged along the circumference of the transmission ring, and the abutment plate is used to abut the transmission plate to drive the transmission ring to rotate.

[0009] By adopting the above technical solution, when the water flow in the shell drives the blades to drive the rotating drum to rotate, the rotating drum drives the abutment sheet to rotate synchronously. During the rotation process, the abutment sheet will intermittently push the transmission sheet on the transmission ring, thereby intermittently driving the transmission ring to rotate outside the ultraviolet lamp tube, which helps to drive the cleaning member to slide intermittently along the circumference of the ultraviolet lamp tube, helps to clean the pollutants on the surface of the ultraviolet lamp tube, and further helps to ensure the intensity and effect of seawater sterilization; by the abutment sheet intermittently pushing the transmission sheet, it helps to reduce the frequency of movement of the cleaning member, so that the cleaning member will not clean the surface of the ultraviolet lamp tube too frequently, and thus it is not easy to cause wear to the surface of the ultraviolet lamp tube, thereby extending the service life of the ultraviolet lamp tube.

[0010] Preferably, the cleaning member comprises a connecting piece arranged on the transmission ring and a cleaning sponge arranged on the connecting piece, and the cleaning sponge abuts against the surface of the ultraviolet lamp tube.

[0011] By adopting the above technical solution, the cleaning sponge is in contact with the ultraviolet lamp tube, and when the transmission ring rotates to drive 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, so that the surface of the ultraviolet lamp tube is not easy to scale during long-term use, which helps to ensure the intensity and effect of sterilization of the ultraviolet lamp tube.

[0012] Preferably, the connecting piece is plug-fitted with the transmission ring, and the transmission ring is provided with a locking piece 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 relatively fixed by the locking member, so that the connecting piece and the transmission ring are detachably connected, which helps to remove the connecting piece from the transmission ring and replace the cleaning sponge.

[0014] Preferably, the blade is slidably disposed on the drum, the sliding direction of the blade is perpendicular to the rotation axis of the drum, and the drum is provided with an adjustment component for adjusting the blade to slide toward or away from the drum.

[0015] By adopting the above technical solution, when seawater flows through the shell to drive the blades to drive the drum to rotate, when the blades on the drum rotate to the upper side or the lower side of the drum, the blades are adjusted by the adjusting component to slide in the direction close to the drum to reduce the contact area between the blades and the water flow; and when the blades on the drum rotate to the lower side or the upper side of the drum, the blades are adjusted by the adjusting component to slide in the direction away from the drum to increase the contact area between the blades and the water flow, thereby achieving different states of the blades on the upper and lower sides of the drum, thereby ensuring that the water flow can smoothly push the blades to drive the drum to rotate.

[0016] Preferably, a fixing rod is provided in the shell, and the rotating drum is coaxially rotatably sleeved on the fixing rod. The adjusting assembly includes a first magnet provided on the fixing rod, a second magnet provided on the blade, and an elastic member provided in the rotating drum. The first magnet is used to adsorb the second magnet to drive the blade to slide in a direction close to the fixing rod, and the central angle of the first magnet is less than or equal to 180 degrees. The elastic member is used to pull the blade to slide in a direction away from the fixing rod, and the adsorption force between the first magnet and the second magnet is greater than the elastic force of the elastic member.

[0017] By adopting the above technical solution, when the rotating drum drives the blades to rotate until the second magnet is aligned with the first magnet, the first magnet attracts the second magnet to drive the corresponding blades to slide in the direction close to the rotating drum, so as to reduce the contact area between the corresponding blades and the water flow; when the rotation drives the blades to rotate until the second magnet is misaligned with the first magnet, the corresponding blades slide in the direction away from the rotating drum under the pulling force of the elastic member, thereby extending out of the rotating drum, thereby increasing the contact area between the corresponding blades and the water flow.

[0018] Preferably, the elastic member includes a spring for pulling the blade to slide in a direction away from the fixed rod, one end of the spring is arranged in the rotating drum, and the other end is arranged on the blade, and the adsorption 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 the spring to slide in a direction away from the drum, which helps to drive the corresponding blades to extend out of the drum, so as to increase 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 blades rotate to the lower side of the fixed rod, the second magnet is offset from the first magnet to extend out of the rotating drum, so that even when the water flow in the shell is not fully filled, the water flow can drive the blades and the rotating drum to rotate continuously.

[0022] Preferably, the shell has a water inlet end and a water outlet end, and the rotating drum is located on a side of the ultraviolet lamp tube close to the water inlet end of the shell.

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

[0024] Preferably, a plurality of ultraviolet lamp tubes are provided, and the distances between the central axes of the plurality of ultraviolet lamp tubes and the central axis of the drum are equal.

[0025] The adoption of the above technical solution helps to ensure the sterilization effect of the ultraviolet lamp tube 2 on seawater.

[0026] In summary, this application includes the following beneficial technical effects: When in use, the seawater passing through the shell will impact the blades to drive the drum to rotate. During the rotation of the drum, the cleaning part is driven to slide through the transmission part. Since the cleaning part abuts against the surface of the ultraviolet lamp tube, the pollutants on the surface of the ultraviolet lamp tube can be effectively cleaned during the sliding process of the cleaning part. At the same time, the automatic rotation of the drum can be achieved by using the water flow passing through the shell as the power, so that the cleaning part can automatically clean the surface of the ultraviolet lamp tube, which helps to ensure the sterilization intensity and effect of seawater and improve the operating efficiency and reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0028] Figure 2 It is a cross-sectional view of the overall structure of Example 1 of the present application.

[0029] Figure 3 It is a partial structural diagram of Example 1 of the present application.

[0030] Figure 4 It is a partial structural sectional exploded diagram of Example 1 of the present application.

[0031] Figure 5 This is a partial structural cross-sectional view of Example 2 of the present application.

[0032] Explanation of the accompanying drawings: 1. Shell; 101. First mounting shell; 102. Second mounting shell; 2. Ultraviolet lamp tube; 3. Cleaning part; 31. Connecting plate; 32. Cleaning sponge; 4. Rotating drum; 5. Blade; 6. Transmission part; 61. Abutment plate; 62. Transmission plate; 7. Transmission ring; 8. Fixed rod; 9. First magnet; 10. Second magnet; 11. Spring; 12. Ultraviolet mounting seat; 13. Sealing cover plate; 14. Sliding groove; 15. Support block; 16. Support groove; 17. Flange; 18. Water inlet end; 19. Water outlet end; 20. Fixed ring; 21. Through hole; 22. Adjusting plate; 23. Adjusting hole; 24. Connecting rod; 25. Pull spring. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-5 This application is described in further detail.

[0034] Embodiment 1: The present application embodiment discloses a UV sterilization device for a seawater desalination plant. Figure 1 and Figure 2 The ultraviolet sterilization device for a seawater desalination plant includes a shell 1 and an ultraviolet lamp 2, wherein the shell 1 includes a first mounting shell 101 and a second mounting shell 102, and the second mounting shell 102 is connected and penetrated on 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, and the first mounting shell 101 and the second mounting shell 102 are both made of stainless steel.

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

[0036] Reference Figure 2 and Figure 3 The ultraviolet lamp tube 2 is installed between the ultraviolet mounting seat 12 and the sealing cover plate 13. The ultraviolet lamp tube 2 spans the interior of the first mounting shell 101. The length direction of the ultraviolet lamp tube 2 is perpendicular to the water flow direction in the first mounting shell 101. A cleaning piece 3 for cleaning the surface of the ultraviolet lamp tube 2 is slidably arranged in the second mounting shell 102. The cleaning piece 3 moves along the circumferential direction of the ultraviolet lamp tube 2, and the cleaning piece 3 abuts against the surface of the ultraviolet lamp tube 2.

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

[0038] During use, seawater enters the first mounting shell 101 from the water inlet end 18, and the seawater passing through the first mounting shell 101 will impact the blades 5 to drive the rotating drum 4 to rotate. During the rotation of the rotating drum 4, the cleaning member 3 is driven by the transmission member 6 to slide along the circumference of the ultraviolet lamp tube 2. Since the cleaning member 3 abuts against the surface of the ultraviolet lamp tube 2, the pollutants on the surface of the ultraviolet lamp tube 2 can be effectively cleaned during the sliding process of the cleaning member 3. At the same time, the automatic rotation of the rotating drum 4 can be realized by using the water flow passing through the first mounting shell 101 as the power, so that the cleaning member 3 can automatically clean the surface of the ultraviolet lamp tube 2, which helps to ensure the sterilization intensity and effect of seawater and improve the operating efficiency and reliability of the equipment.

[0039] Reference Figure 2 and Figure 3In order to facilitate the cleaning of the surface of the ultraviolet lamp tube 2, a transmission ring 7 is rotatably provided on the ultraviolet mounting seat 12 and the sealing cover plate 13. The rotation axis of the transmission ring 7 is parallel to the length direction of the ultraviolet lamp tube 2. The transmission ring 7 on the ultraviolet mounting seat 12 and the sealing cover plate 13 corresponds to the ultraviolet lamp tube 2 one by one. The transmission ring 7 is coaxially rotatably sleeved outside the corresponding ultraviolet lamp tube 2; the cleaning member 3 includes a connecting piece 31 and a cleaning sponge 32. The connecting piece 31 corresponds to the ultraviolet lamp tube 2 one by one. The length direction of the connecting piece 31 is parallel to the length direction of the ultraviolet lamp tube 2. The connecting piece 31 is provided between the transmission rings 7 at both ends of the corresponding ultraviolet lamp tube 2. When the transmission ring 7 rotates, it drives the connecting piece 31 to slide along the circumference of the ultraviolet lamp tube 2. Among them, the transmission ring 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 close to the surface of the ultraviolet lamp tube 2, and the cleaning sponge 32 abuts against the surface of the ultraviolet lamp tube 2. The transmission member 6 is used to drive the transmission ring 7 to rotate when the rotating drum 4 rotates to drive the connecting piece 31 to slide along the circumference of the ultraviolet lamp tube 2. Since the cleaning sponge 32 is soft, the connecting piece 31 drives the cleaning sponge 32 to move along the circumference of the ultraviolet lamp tube 2. When wiping the surface of the ultraviolet lamp tube 2, the cleaning sponge 32 is not easy to cause wear to the surface of the ultraviolet lamp tube 2. In other embodiments, the cleaning sponge 32 can be replaced by a soft cleaning brush.

[0041] When in use, the transmission ring 7 is driven to rotate when the rotating drum 4 is rotated through the transmission member 6. 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, thereby helping the cleaning sponge 32 to wipe the surface of the ultraviolet lamp tube 2, which can effectively clean the pollutants on the surface of the ultraviolet lamp tube 2, help to ensure the intensity and effect of seawater sterilization, and improve the operating efficiency and reliability of the equipment.

[0042] Reference Figure 3 In order to facilitate the rotation of the rotating drum 4 to drive the transmission ring 7 to rotate so as to drive the connecting piece 31 and the cleaning sponge 32 to slide along the circumferential direction of the ultraviolet lamp tube 2, the transmission member 6 includes an abutment sheet 61 and a transmission sheet 62. The abutment sheet 61 is fixed on the outer wall of the rotating drum 4 and is arranged along the radial direction of the rotating drum 4. Two abutment sheets 61 are provided, and the blade 5 is located between the two abutment sheets 61. The abutment sheets 61 correspond to the transmission rings 7 at both ends of the ultraviolet lamp tube 2 one by one, and the abutment sheets 61 are aligned with the corresponding transmission rings 7; a plurality of transmission sheets 62 are arranged along the circumference of the transmission ring 7, and the abutment sheets 61 are used to abut the transmission sheets 62 on the corresponding transmission rings 7 to drive the transmission ring 7 to rotate. The distance from the side of the transmission sheet 62 away from the transmission ring 7 to the surface of the transmission ring 7 is less than 10 mm, so that the transmission sheet 62 will not drive the transmission ring 7 to rotate under the action of the water flow; wherein, the abutment sheets 61 and the transmission sheets 62 are both made of stainless steel.

[0043] When the rotating drum 4 drives the abutment sheet 61 to rotate continuously, the abutment sheet 61 will intermittently abut the transmission sheet 62 on the transmission ring 7, pushing the transmission ring 7 to rotate, thereby driving the connecting sheet 31 and the cleaning sponge 32 to intermittently move along the circumference of the corresponding ultraviolet lamp tube 2, reducing the frequency of rotation of the transmission ring 7, and further reducing the frequency of movement of the connecting sheet 31 and the cleaning sponge 32, so that the cleaning sponge 32 does not wipe the surface of the ultraviolet lamp tube 2 too frequently, is not easy to cause wear to the surface of the ultraviolet lamp tube 2, and extends the service life of the ultraviolet lamp tube 2.

[0044] Reference Figure 3 The connecting piece 31 is plugged and matched with the transmission ring 7, and a locking piece is provided on the transmission ring 7 for fixing the connecting piece 31 and the transmission ring 7 relatively, wherein the locking piece includes a screw (not shown in the figure) threadedly arranged on the transmission ring 7, and the connecting piece 31 and the transmission ring 7 are detachably connected by the screw, which helps to remove the connecting piece 31 and replace the cleaning sponge 32. In other embodiments, the screw can be replaced by a screw, a rivet or a tightening bolt, etc.

[0045] Reference Figure 2 and Figure 3 The drum 4 is located near the water inlet end 18 of the housing 1 (refer to Figure 1 ) side, so that the water flow passing through the blades 5 on the drum 4 then passes through the ultraviolet lamp 2, ensuring the sterilization effect, and the drum 4 first contacts with the seawater, and the scaling of the drum 4 will first accumulate the minerals in the seawater, which will help reduce the deposition of minerals on the ultraviolet lamp 2. The drum 4 rolls in the water flow driven by the blades 5, which can promote the uniform mixing of the seawater, make the water flow contact the ultraviolet lamp 2 more fully, prolong the residence time in the ultraviolet lamp 2 to a certain extent, reduce the dead angle of the water flow, and improve the sterilization effect.

[0046] Reference Figure 2 and Figure 3 , multiple ultraviolet lamp tubes 2 are provided, and the distances between the central axes of the multiple ultraviolet lamp tubes 2 and the central axis of the rotating drum 4 are equal, so that the transmission ring 7 on the ultraviolet lamp tube 2 can be driven to rotate through the abutment sheet 61 when the rotating drum 4 rotates. In the embodiment of the present application, two ultraviolet lamp tubes 2 are provided, and the two ultraviolet lamp tubes 2 are arranged at intervals from top to bottom. The ultraviolet lamp tubes 2 both span the first installation shell 101, and the fixing rod 8 is located between the two ultraviolet lamp tubes 2, which helps to ensure the sterilization effect of the seawater passing through the first installation shell 101. In other embodiments, the number of ultraviolet lamp tubes 2 can be set according to the diameter of the first installation shell 101.

[0047] Reference Figure 3 and Figure 4The blade 5 is slidably arranged on the drum 4, and the sliding direction of the blade 5 is perpendicular to the rotation axis of the drum 4. The drum 4 is provided with a sliding groove 14 for the blade 5 to slide. The sliding groove 14 runs through the inner wall and the outer wall of the drum 4. An adjusting component is arranged in the drum 4 to adjust the blade 5 to slide toward or away from the drum 4.

[0048] Reference Figure 3 and Figure 4 In order to facilitate the adjustment of the blade 5 to slide in the direction close to or away from the rotating drum 4, the adjustment component includes a first magnet 9, a second magnet 10 and an elastic member. The first magnet 9 is fixedly embedded on the outer wall of the fixing rod 8. The outer surface of the first magnet 9 is arranged on the same arc surface as the outer surface of the fixing rod 8. The central angle of the first magnet 9 is less than or equal to 180 degrees. In the embodiment of the present application, the central angle of the first magnet 9 is 180 degrees, and the first magnet 9 is embedded on the upper side of the fixing rod 8; the second magnet 10 corresponds to the blade 5 one by one, and the second magnet 10 is fixed on the side of the corresponding blade 5 close to the fixing rod 8. The first magnet 9 is used to absorb the second magnet 10 to drive the blade 5 to slide in the direction close to the rotating drum 4. The elastic member is arranged in the rotating drum 4, and the elastic member is used to pull the blade 5 to slide in the direction away from the rotating drum 4. The adsorption force between the first magnet 9 and the second magnet 10 is greater than the elastic force of the elastic member.

[0049] Reference Figure 3 and Figure 4 Specifically, in order to facilitate pulling the blade 5 to slide in the direction away from the rotating drum 4, support blocks 15 are fixed on both sides of the blade 5 close to the fixed rod 8, and a support groove 16 that slides with the support block 15 is opened on the side wall of the sliding groove 14. The elastic member includes a spring 11, and the spring 11 corresponds to the support block 15 on the blade 5 one by one. 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 on the inner wall of the support groove 16 away from the fixed rod 8, and the other end is fixed on the support block 15. The first magnet 9 and the second magnet 10 are The adsorption force is greater than the sum of the elastic forces of the two springs 11. When the first magnet 9 is separated from the second magnet 10, the corresponding blade 5 extends out of the rotating drum 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 cooperated, the side of the blade 5 away from the fixed rod 8 has the same arc surface as the outer wall of the rotating drum 4, and the fixed rod 8 is tightly abutted against the rotating drum 4 to ensure that seawater is not easy to enter the interior of the rotating drum 4, so that the spring 11, the first magnet 9 and the second magnet 10 are not easy to affect the water quality of the seawater.

[0050] When in use, the blade 5 located at the lower side of the fixed rod 8 is misaligned with the first magnet 9, so that under the pulling force of the corresponding spring 11, the blade 5 extends out of the rotating drum 4, and is impacted by the water flow in 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 is aligned with the first magnet 9 on the fixed rod 8. Therefore, under the adsorption action of the first magnet 9, the second magnet 10 drives the corresponding blade 5 to slide in the direction close to the fixed rod 8, stretching the spring 11 until the first magnet 9 and the second magnet 10 are adsorbed and matched. 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 to the lower side of the fixed rod 8 again, so that the corresponding second magnet 10 is misaligned with the first magnet 9, and the blade 5 extends out of the rotating drum 4, and reciprocates in this way, so that only the blade 5 on the lower side of the fixed rod 8 can abut against the flowing water, so as to ensure that under the impact of the flowing water, the rotating drum 4 can continuously rotate in the same direction, so as to drive the cleaning member 3 on the transmission ring 7 to move intermittently.

[0051] The implementation principle of Example 1 of the present application is as follows: when in use, seawater enters the first mounting shell 101 through the water inlet end 18, and then the seawater pushes the blades 5 on the lower side of the fixed rod 8 to drive the rotating drum 4 to rotate. When the blades 5 rotate to the upper side of the fixed rod 8, the corresponding second magnets 10 are aligned with the first magnets 9 on the fixed rod 8, and then under the adsorption action of the first magnets 9, the second magnets 10 drive the corresponding blades 5 to slide in the direction close to the fixed rod 8 until the first magnets 9 and the second magnets 10 are adsorbed and cooperated, so that the blades 5 are retracted into the rotating drum 4. As the blades 5 drive the rotating drum 4 to continue to rotate, the blades 5 rotate to the lower side of the fixed rod 8 again. At this time, the corresponding second magnets 10 are separated from the first magnets 9, and the blades 5 extend out of the rotating drum 4 under the pull of the spring 11. In this reciprocating manner, the rotating drum 4 drives the abutment sheet 61 to rotate continuously, and at the same time, it can promote the uniform mixing of seawater, so that the water flow can more fully contact the ultraviolet lamp tube 2, to a certain extent prolong the residence time in the ultraviolet lamp tube 2, reduce the dead corners of the water flow, and improve the sterilization effect.

[0052] During the rotation of the drum 4, the abutment sheet 61 will intermittently abut the transmission sheet 62 on the transmission ring 7, pushing the transmission ring 7 to rotate intermittently. When the transmission ring 7 rotates, it will drive the connecting sheet 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 convenient for the cleaning sponge 32 to wipe the surface of the ultraviolet lamp tube 2, and effectively clean the pollutants on the surface of the ultraviolet lamp tube 2. At the same time, with the water flow flowing through the first mounting shell 101 as the power, the automatic rotation of the drum 4 can be realized, so that the cleaning sponge 32 automatically cleans the surface of the ultraviolet lamp tube 2, which helps to ensure the strength and effect of seawater sterilization and improve the operating efficiency and reliability of the equipment; and the cleaning sponge 32 of the connecting sheet 31 slides intermittently, which can control the cleaning frequency within a certain range and is not easy to cause wear to the surface of the ultraviolet lamp tube 2.

[0053] Then, the raw water passing through the ultraviolet lamp tube 2 is sterilized and flows out from the water outlet 19, and then is transported to the reverse osmosis safety filter of the seawater desalination plant through a pipeline to desalinate the seawater.

[0054] Embodiment 2: Reference Figure 5 The difference between the embodiment of the present application and the embodiment 1 is that: a fixing ring 20 is coaxially fixedly sleeved at both ends of the ultraviolet lamp tube 2, and the rotating drum 4 is rotatably sleeved on the fixing ring 20, and the rotation axis of the rotating drum 4 is parallel to the length direction of the corresponding ultraviolet lamp tube 2, and the rotating drum 4 corresponds to the transmission ring 7 near one end, wherein the transmission member 6 includes a connecting rod 24, and a plurality of 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 drum 4, so as to realize the fixed connection between the rotating drum 4 and the corresponding transmission ring 7, so that when the rotating drum 4 rotates, the corresponding transmission ring 7 can be driven to rotate.

[0055] Reference Figure 5 A plurality of through holes 21 are provided on the blade 5, and the plurality of through holes 21 penetrate the blade 5. An adjusting piece 22 is slidably provided inside the blade 5. The sliding direction of the adjusting piece 22 is perpendicular to the rotation axis of the drum 4. The adjusting piece 22 slides toward or away from the fixing ring 20. The two outer walls of the adjusting piece 22 abut against the two inner walls of the blade 5 to prevent seawater from entering the interior of the blade 5.

[0056] Reference Figure 5 The adjusting plate 22 is provided with a plurality of adjusting holes 23, and the adjusting holes 23 correspond to the through holes 21 one by one. A pulling spring 25 is provided in the blade 5 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 fixing ring 20. One end of the pulling spring 25 is fixed to the inner wall of the blade 5, and the other end is fixed to the adjusting plate 22. An opening (not shown in the figure) is provided on the side of the rotating drum 4 close to the fixing ring 20, and the opening corresponds to the adjusting plate 22 one by one. The adjusting plate 22 A first magnetic sheet (not shown in the figure) is fixed to one side close to the fixing ring 20, and a second magnetic sheet (not shown in the figure) is embedded on the lower side of the fixing ring 20. The central angle of the second magnetic sheet is 180 degrees. The second magnetic sheet is used to adsorb the first magnetic sheet to drive the adjusting sheet 22 to move toward the direction close to the fixing ring 20 so that the adjusting hole 23 is away from the corresponding through hole 21; the adsorption force between the second magnetic sheet and the first magnetic sheet is greater than the pulling force of the pulling spring 25, and the impact force of the water flow on the blade 5 is greater than the adsorption force between the first magnetic sheet and the second magnetic sheet.

[0057] The implementation principle of Example 2 of the present application is: when the water flow passing through the first mounting shell 101 hits the blade 5, it will push the blade 5 to drive the corresponding rotating drum 4 to rotate. Since the direction of the water flow is constant, the rotating drum 4 on both sides of the ultraviolet lamp tube 2 rotates in the same direction. The rotating drum 4 drives the corresponding transmission ring 7 to rotate synchronously through the corresponding connecting rod 24, so that the transmission ring 7 drives the connecting piece 31 and the cleaning sponge 32 to move along the circumferential direction of the corresponding ultraviolet lamp tube 2, thereby wiping the outer wall of the ultraviolet lamp tube 2 to ensure the sterilization effect of the ultraviolet lamp tube 2.

[0058] When the rotating drum 4 drives the blade 5 to rotate until the blade 5 is located at the lower side of the fixing ring 20, the corresponding blade 5 is aligned with the second magnetic sheet on the fixing ring 20, and then the second magnetic sheet on the fixing ring 20 will absorb the first magnetic sheet and drive the adjusting sheet 22 to slide in the direction close to the fixing ring 20, so that the pulling spring 25 is gradually stretched, and the adjusting hole 23 is gradually away from the corresponding through hole 21, so that the adjusting sheet 22 closes the through hole 21, thereby increasing the contact area between the corresponding blade 5 and the flowing water; when the rotating drum 4 drives the blade 5 to rotate until the blade 5 is located at the upper side of the fixing ring 20, at this time, the corresponding blade 5 is misaligned with the second magnetic sheet, and the stretched pulling spring 25 will pull the adjusting sheet 22 to slide in the direction away from the fixing ring 20, so that the adjusting hole 23 is gradually aligned with the corresponding through hole 21, thereby reducing the contact area between the corresponding blade 5 and the water flow, so that the contact area between the blade 5 located at the lower side of the fixing ring 20 and the water flow is greater than the contact area between the upper blade 5 and the water flow, thereby ensuring that the blade 5 can drive the rotating drum 4 to rotate continuously in one direction.

[0059] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An ultraviolet sterilization device for a seawater desalination plant, comprising a housing (1) and an ultraviolet lamp (2) installed in the housing (1), characterized in that: A cleaning piece (3) for cleaning the surface of the ultraviolet lamp tube (2) is slidably arranged in the shell (1), and the cleaning piece (3) abuts against the surface of the ultraviolet lamp tube (2). A rotating drum (4) is rotatably arranged in the shell (1), and the rotating axis of the rotating drum (4) is perpendicular to the direction of water flow in the shell (1). A plurality of blades (5) are arranged on the rotating drum (4) along its circumference, and the blades (5) are used to contact the water flow passing through the shell (1) to drive the rotating drum (4) to rotate. A transmission piece (6) is arranged on the rotating drum (4), and the transmission piece (6) is used to drive the cleaning piece to slide when the rotating drum (4) rotates.

2. The ultraviolet sterilization device for a seawater desalination plant according to claim 1, characterized in that: The length direction of the ultraviolet lamp tube (2) is parallel to the rotation axis of the rotating drum (4); a transmission ring (7) is rotatably arranged in the housing (1); the transmission ring (7) is rotatably sleeved outside the ultraviolet lamp tube (2); the cleaning member (3) is arranged on the transmission ring (7); the transmission member (6) comprises an abutment sheet (61) arranged on the rotating drum (4) and a transmission sheet (62) arranged on the transmission ring (7); a plurality of transmission sheets (62) are arranged along the circumference of the transmission ring (7); the abutment sheet (61) is used to abut against the transmission sheet (62) to drive the transmission ring (7) to rotate.

3. The ultraviolet sterilization device for a seawater desalination plant according to claim 2, characterized in that: The cleaning member (3) comprises a connecting piece (31) arranged on the transmission ring (7) and a cleaning sponge (32) arranged on the connecting piece (31); the cleaning sponge (32) abuts against the surface of the ultraviolet lamp tube (2).

4. The ultraviolet sterilization device for a seawater desalination plant according to claim 3, characterized in that: The connecting piece (31) is plug-fitted with the transmission ring (7), and a locking piece for relatively fixing the connecting piece (31) and the transmission ring (7) is provided on the transmission ring (7).

5. The ultraviolet sterilization device for a seawater desalination plant according to claim 1, characterized in that: The blade (5) is slidably arranged on the rotating drum (4), the sliding direction of the blade (5) is perpendicular to the rotation axis of the rotating drum (4), and the rotating drum (4) is provided with an adjustment component for adjusting the blade (5) to slide in a direction close to or away from the rotating drum (4).

6. The ultraviolet sterilization device for a seawater desalination plant according to claim 5, characterized in that: A fixing rod (8) is arranged in the shell (1); the rotating drum (4) is coaxially rotatably sleeved on the fixing rod (8); the adjusting assembly comprises a first magnet (9) arranged on the fixing rod (8), a second magnet (10) arranged on the blade (5) and an elastic member arranged in the rotating drum (4); the first magnet (9) is used to adsorb the second magnet (10) to drive the blade (5) to slide in a direction close to the fixing rod (8); the central angle of the first magnet (9) is less than or equal to 180 degrees; the elastic member is used to pull the blade (5) to slide in a direction away from the fixing rod (8); and the adsorption force between the first magnet (9) and the second magnet (10) is greater than the elastic force of the elastic member.

7. The ultraviolet sterilization device for a seawater desalination plant according to claim 6, characterized in that: The elastic member comprises a spring (11) for pulling the blade (5) to slide in a direction away from the fixed rod (8); one end of the spring (11) is arranged in the rotating drum (4), and the other end is arranged on the blade (5); the adsorption force between the first magnet (9) and the second magnet (10) is greater than the elastic force of the spring (11).

8. The ultraviolet sterilization device for a seawater desalination plant according to claim 6, characterized in that: The first magnet (9) is located on the upper side of the fixing rod (8).

9. The ultraviolet sterilization device for a seawater desalination plant according to claim 1, characterized in that: The housing (1) has a water inlet end (18) and a water outlet end (19), and the rotating drum (4) is located on a side of the ultraviolet lamp tube (2) close to the water inlet end (18) of the housing (1).

10. A UV sterilizer for a seawater desalination plant according to any one of claims 1 to 9, characterized in that: A plurality of ultraviolet lamp tubes (2) are provided, and the distances between the central axes of the plurality of ultraviolet lamp tubes (2) and the central axis of the rotating drum (4) are equal.

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