A device and method for ultraviolet treatment of ship ballast water

Abstract

This invention discloses an ultraviolet (UV) treatment device and method for ship ballast water, relating to the field of ship ballast water treatment technology. The device includes a treatment tank with a top cover fixedly installed on its top. Employing this structure, the device significantly improves ballast water treatment efficiency through the coordinated use of a drive and disinfection mechanism. When treating ballast water, a filtration mechanism is first used to filter the water. After filtration, a drive motor is started, driving a gear to rotate. Since the gear meshes with a gear ring, the gear ring rotates accordingly, thereby driving the propeller. Simultaneously, the gear linkage causes the shaft to rotate, driving the stirring plate to rotate. The stirring plate and propeller stir the ballast water between the second UV lamp and between the first and second UV lamps, respectively. The two work efficiently between the lamps, ensuring that UV light evenly covers all areas of the ballast water, avoiding disinfection dead zones, and achieving a highly efficient and uniform UV disinfection effect.

Description

Technical Field

[0001] This invention belongs to the field of ship ballast water treatment technology, and specifically relates to a ship ballast water ultraviolet treatment device and treatment method. Background Technology

[0002] Ballast water is water that ships intentionally carry to control their draft, heel, and trim during navigation. When a ship is empty or lightly loaded, the lighter upper part of the hull can easily lead to instability, such as being nose-heavy. Ballast water is then injected to increase the ship's weight, maintain balance and an appropriate draft, and ensure the ship's stability and safety during navigation. It is usually stored in ballast tanks located at the bottom and sides of the ship. Ballast water comes from a wide range of sources, including ports and waterways. However, ballast water also brings some environmental problems, as organisms from different waters may be carried to other places by the ballast water. These alien organisms may become invasive species in the new environment, damaging the local ecosystem.

[0003] In current technology, ship operators typically perform ballast water replacement when preparing to enter a port from the deep sea. During this process, the ballast water usually needs to be filtered. For example, Chinese patent CN216890478U discloses a ship ballast water disinfection device. When ballast water needs to be discharged, it first passes through a filter tank and then enters a disinfection tank. Ultraviolet lamps disinfect the ballast water entering the disinfection tank. At the same time, a stirring component agitates the ballast water, stirring the ballast water at the bottom of the disinfection tank to the top. This helps prevent the ballast water on board from adversely affecting the receiving port waters when discharged into another water area, thus protecting the aquatic ecosystem.

[0004] While the aforementioned ballast water treatment device possesses a certain water treatment capacity, several defects and deficiencies have been exposed during actual operation. In the overall disinfection process, because the disinfection lamp is located at the top of the device, ultraviolet light cannot evenly cover the ballast water at the bottom of the disinfection tank. Although the device is equipped with a stirring structure, this structure only uses a simple stirring plate for agitation, and its design is relatively simple, failing to achieve efficient mixing of the ballast water. This results in the ultraviolet light emitted by the disinfection lamp not being able to fully contact the ballast water, making it difficult to achieve efficient and uniform disinfection of the ballast water at the bottom of the tank. In summary, the existing device has obvious shortcomings and urgently needs to be optimized and improved to enhance its treatment efficiency and disinfection effect, ensuring the treatment quality of ship ballast water. Summary of the Invention

[0005] In view of the problems mentioned in the background art, the purpose of this invention is to provide a device and method for ultraviolet treatment of ship ballast water, so as to solve the problem that the existing technology cannot achieve more efficient and uniform disinfection and sterilization during application.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0007] A device and method for ultraviolet (UV) treatment of ship ballast water includes a treatment tank. A top cover is fixedly installed on the top of the treatment tank. A filter mechanism is fixedly installed on one side of the top cover. The bottom of the filter mechanism passes through the top cover and communicates with the interior of the treatment tank. A drive mechanism is fixedly installed on the top cover. A disinfection mechanism is provided at the bottom of the drive mechanism and extends into the interior of the treatment tank. A discharge hopper is fixedly installed at the bottom of the treatment tank. A drain valve is fixedly installed at the bottom of the discharge hopper. A drain pipe is fixedly installed at the output end of the drain valve. A mounting frame is fixedly installed on the outside of the treatment tank. Support legs are fixedly installed at equal intervals at the bottom of the mounting frame.

[0008] The disinfection mechanism includes a stirring assembly and a fixed plate. The fixed plate is fixedly installed in the middle of the bottom of the top cover. The bottom of the fixed plate is equipped with first ultraviolet lamps arranged in a ring at equal intervals. The stirring assembly is fixedly installed in the bottom of the drive mechanism and is located outside the first ultraviolet lamps.

[0009] Furthermore, the disinfection mechanism also includes a base plate, which is fixedly connected to the bottom of the top cover in a ring with equal spacing and located outside each of the first ultraviolet lamps. A second ultraviolet lamp is fixedly installed at the bottom of the base plate and is located in the gap of the stirring assembly.

[0010] Furthermore, the driving mechanism includes a drive motor, gears, and a gear ring. The gear ring and gears are meshed together. The drive motor is fixedly installed on the top of the top cover away from the sterilization mechanism. The gears are arranged in a ring at equal intervals at the bottom of the top cover. The gear ring is rotatably connected to the outside of the base plate. The output end of the drive motor passes through the top cover and is fixedly connected to the top of a gear. The stirring assembly is installed at the bottom of the gears and gear ring.

[0011] Furthermore, the stirring assembly includes a shaft, which is fixedly installed on the bottom of the gear. Stirring plates are fixedly installed on the outer surface of the shaft at equal intervals. The shaft and the second ultraviolet lamp are arranged in an alternating circular pattern at equal intervals. The shaft is located outside the first ultraviolet lamp.

[0012] Furthermore, the stirring assembly also includes a propeller, which is fixedly connected to the bottom of the toothed ring at equal intervals. The propeller is disposed between the inner sides of the first ultraviolet lamp and the second ultraviolet lamp, and the bottom of the propeller is conical and extends into the conical discharge hopper.

[0013] Furthermore, the filtration mechanism includes a filter tank, a drain hopper is fixedly installed at the bottom of the filter tank, the drain hopper is fixedly installed on the top of the top cover away from the drive motor, and a filter assembly is movably installed inside the filter tank, the bottom of the filter assembly penetrates the top cover and is connected to a gear.

[0014] Furthermore, a water inlet pipe is fixedly installed on the top of the filter tank, and a connecting flange is fixedly installed at the input end of the water inlet pipe.

[0015] Furthermore, the filter assembly includes a filter screen, which is conical in shape and fixedly installed at the bottom of the filter tank. A rotating shaft is rotatably connected to the middle of the filter screen, and the bottom of the rotating shaft passes through the filter screen and is fixedly connected to the top of a gear. A cleaning frame is fixedly connected at equal intervals to the top outer surface of the rotating shaft. A telescopic spring is fixedly connected at equal intervals inside the cleaning frame. A sliding plate is slidably connected to the inner side of the cleaning frame. The outer side of the sliding plate is fixedly connected to the end of the telescopic spring. A brush plate is fixedly installed at the bottom of the sliding plate. The bottom of the brush plate is in contact with the outer surface of the filter screen. A scraping frame is fixedly connected to the outer side of the brush plate. The outer side of the scraping frame is in contact with the bottom of the filter tank.

[0016] Furthermore, a discharge pipe is fixedly installed on the lower outer side of the filter tank. The input end of the discharge pipe is located on the upper side of the filter screen inside the filter tank. A collection tank is fixedly installed on the output end of the discharge pipe. A threaded cap is threadedly connected to the bottom output end of the collection tank.

[0017] A method for ultraviolet treatment of ship ballast water includes the following steps:

[0018] Step 1: Connect the pipes. Connect the inlet pipe to the external ballast water pipe through the connecting flange so that the ballast water can flow into the device.

[0019] Step 2: Preliminary filtration. Ballast water enters the filter tank through the inlet pipe and is initially filtered by the filter screen. Large particles of impurities are intercepted on the outer surface of the filter screen.

[0020] Step 3: Start the drive motor. After filtration is complete, start the drive motor. The motor will drive the gear to rotate. Because the gear meshes with the gear ring, the gear ring will rotate synchronously. The rotation of the gear ring will cause the propeller to start working. At the same time, the rotation of one gear will drive multiple other gears to work together. The shaft at the bottom of the gear will also rotate, and the stirring plate on the shaft will start to rotate.

[0021] Step 4: Stirring and disinfection. The stirring plate stirs between the second ultraviolet lamp, and the propeller stirs the ballast water between the first and second ultraviolet lamps to ensure that the ballast water flows stably between the two lamps. The propeller and stirring plate stir efficiently between the two lamps so that the ultraviolet light can evenly cover the ballast water in all parts of the treatment tank. The propeller also drives the ballast water to roll up and down, achieving efficient and uniform ultraviolet disinfection of the ballast water.

[0022] Step 5: Impurity cleaning. During the operation of the drive motor, the motor drives the gears to rotate. Through the meshing transmission of the gear ring, all gears rotate synchronously, driving the rotating shaft and the cleaning frame connected to the outside of the rotating shaft to rotate. The telescopic spring inside the cleaning frame pushes the sliding plate to move, so that the brush bristles are tightly attached to the outer surface of the filter screen. As the drive motor continues to run, the rotating shaft drives the brush to clean the top of the filter screen. The scraping frame scrapes the bottom of the filter tank. The filtered impurities slide down the conical surface of the conical filter screen to the bottom of the filter tank, and are then pushed by the scraping frame to the discharge pipe inlet, and finally enter the collection tank.

[0023] Step Six: Clean up the waste residue. After using the equipment, open the threaded cover at the bottom and clean up the waste residue in the collection tank.

[0024] In summary, the present invention has the following main beneficial effects:

[0025] First, this device improves the ballast water treatment efficiency during use by coordinating the drive and disinfection mechanisms. During treatment, the water is first filtered by the filtration mechanism. After the filtration is completed, the drive motor is started. The motor drives the gears. Because the gears mesh with the gear ring, the gear ring rotates and drives the propeller. At the same time, the rotation of one gear drives the other gears to rotate, causing the shaft at the bottom of the gear to rotate, which in turn drives the stirring plate to rotate. The stirring plate and the propeller stir the ballast water between the second ultraviolet lamp and between the first and second ultraviolet lamps. They are located between the two lamps, which can stir efficiently and improve the contact effect between ultraviolet light and ballast water. This allows the ultraviolet light to evenly cover all parts of the ballast water in the treatment tank. The propeller can also drive the ballast water to roll up and down, avoiding disinfection dead corners and achieving efficient and uniform ultraviolet disinfection.

[0026] Secondly, by setting up a filtration mechanism, the system can be started by turning on the drive motor during use. This drives the gears to rotate, and through the gear ring transmission, all gears rotate synchronously, causing the rotating shaft and cleaning frame to rotate. During use, the inlet pipe is connected to the external pipe via the connecting flange, and ballast water flows into the filter tank. It is filtered by the filter screen, and large particles of impurities are intercepted outside the screen. The motor drives the cleaning frame, and its internal telescopic spring pushes the sliding plate, allowing the brush bristles to adhere to the surface of the screen. The rotating shaft drives the brush to clean the top of the screen, while the scraper cleans the bottom of the tank. Because the screen is conical, impurities slide down the conical surface to the bottom of the tank and are pushed by the scraper to the discharge pipe, entering the collection tank. After use, the bottom threaded cover can be opened to clean the waste residue, achieving automatic cleaning and making the equipment convenient to use. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the rear view structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the disassembled processing tank and disinfection mechanism of the present invention;

[0030] Figure 4 This is a schematic diagram of the disinfection mechanism of the present invention;

[0031] Figure 5 This is a schematic diagram of the disinfection mechanism of the present invention in a disassembled state, viewed from below.

[0032] Figure 6 This is a top view of the disassembled disinfection mechanism of the present invention;

[0033] Figure 7 This is a schematic diagram of the internal structure of the filter can of the present invention;

[0034] Figure 8 This is a schematic diagram of the filter component structure of the present invention.

[0035] Reference numerals: 1. Processing tank; 2. Top cover; 3. Support leg; 4. Mounting frame; 5. Drive mechanism; 51. Drive motor; 52. Gear; 53. Gear ring; 6. Sterilization mechanism; 61. Stirring assembly; 611. Shaft; 612. Stirring plate; 613. Propeller; 62. Fixed plate; 63. First ultraviolet lamp; 64. Second ultraviolet lamp; 65. Base plate; 7. Filtration mechanism; 71. Filter tank; 72. Drain hopper; 73. Filter assembly; 731. Filter screen; 732. Rotating shaft; 733. Cleaning frame; 734. Telescopic spring; 735. Slide plate; 736. Brush plate; 737. Scratching frame; 74. Water inlet pipe; 75. Connecting flange; 76. Discharge pipe; 77. Collection tank; 78. Threaded cover; 8. Discharge hopper; 9. Drain valve; 10. Drain pipe. Detailed Implementation

[0036] Example

[0037] refer to Figures 1 to 8 This embodiment of a ship ballast water ultraviolet treatment device and treatment method includes a treatment tank 1, a top cover 2 fixedly installed on the top of the treatment tank 1, a filter mechanism 7 fixedly installed on one side of the top of the top cover 2, the bottom of the filter mechanism 7 penetrating through the top cover 2 and communicating with the interior of the treatment tank 1, a drive mechanism 5 fixedly installed on the top cover 2, a disinfection mechanism 6 provided at the bottom of the drive mechanism 5, the disinfection mechanism 6 extending into the interior of the treatment tank 1, a discharge bucket 8 fixedly installed at the bottom of the treatment tank 1, a drain valve 9 fixedly installed at the bottom of the discharge bucket 8, a drain pipe 10 fixedly installed at the output end of the drain valve 9, an installation frame 4 fixedly installed on the outside of the treatment tank 1, and support legs 3 fixedly installed at equal intervals at the bottom of the installation frame 4.

[0038] The disinfection mechanism 6 includes a stirring assembly 61 and a fixed plate 62. The fixed plate 62 is fixedly installed in the middle of the bottom of the top cover 2. The bottom of the fixed plate 62 is equipped with first ultraviolet lamps 63 arranged in a ring at equal intervals. The stirring assembly 61 is fixedly installed in the bottom of the drive mechanism 5. The stirring assembly 61 is located outside the first ultraviolet lamps 63. When treating ballast water, the water is first filtered by the filtration mechanism 7. After filtration, the drive motor 51 is started. The motor drives the gear 52 to rotate. Since the gear 52 meshes with the gear ring 53, the gear ring 53 rotates accordingly, thereby driving the propeller 613 to work. At the same time, the gear 52 drives the shaft 611 to rotate, driving the stirring plate 612 to rotate. The stirring plate 612 and the propeller 613 stir the ballast water between the second ultraviolet lamps 64 and between the first ultraviolet lamps 63 and the second ultraviolet lamps 64, respectively. The two work efficiently in the lamp gaps, so that the ultraviolet light evenly covers all parts of the ballast water, avoiding disinfection dead corners and achieving a highly efficient and uniform ultraviolet disinfection effect.

[0039] refer to Figures 1-6The disinfection mechanism 6 also includes a base plate 65, which is fixedly connected to the bottom of the top cover 2 in a ring at equal intervals and located outside each of the first ultraviolet lamps 63. A second ultraviolet lamp 64 is fixedly installed at the bottom of the base plate 65 and is located in the gap of the stirring assembly 61. The base plate 65 is arranged in a ring at equal intervals at the bottom of the top cover 2 and outside each of the first ultraviolet lamps 63, and the second ultraviolet lamp 64 installed at its bottom is located in the gap of the stirring assembly 61, which fits more closely with the stirring assembly 61. When the stirring plate 612 and the propeller 613 stir the ballast water between the first ultraviolet lamp 63 and the second ultraviolet lamp 64, the second ultraviolet lamp 64 can irradiate the water from more angles, which greatly increases the coverage of ultraviolet rays. Under the efficient stirring of the stirring assembly 61, the first ultraviolet lamp 63 and the second ultraviolet lamp 64 irradiate the ballast water evenly in all directions without dead angles, further ensuring that there are no dead angles in the disinfection, thereby achieving more efficient and thorough ultraviolet disinfection of the ballast water and ensuring the treatment quality of the ballast water.

[0040] refer to Figures 4-6The drive mechanism 5 includes a drive motor 51, a gear 52, and a gear ring 53. The gear ring 53 and the gear 52 are meshed together. The drive motor 51 is fixedly installed on the top of the top cover 2 away from the sterilization mechanism 6. The gears 52 are arranged in a ring at equal intervals at the bottom of the top cover 2. The gear ring 53 is rotatably connected to the outside of the base plate 65. The output end of the drive motor 51 passes through the top cover 2 and is fixedly connected to the top of one of the gears 52. The stirring assembly 61 is installed at the bottom of the gears 52 and the gear ring 53. The stirring assembly 61 includes a shaft. The gear 611 and shaft 611 are both fixedly mounted on the bottom of the gear 52. Stirring plates 612 are fixedly mounted at equal intervals on the outer surface of the shaft 611. The shaft 611 and the second ultraviolet lamp 64 are arranged in a staggered, circular pattern at equal intervals. The shaft 611 is located outside the first ultraviolet lamp 63. The stirring assembly 61 also includes a propeller 613, which is fixedly connected at equal intervals to the bottom of the gear ring 53. The propeller 613 is located inside the first ultraviolet lamp 63 and the second ultraviolet lamp 64. The propeller 613 has a conical bottom that extends into the conical discharge hopper 8. The drive motor 51 is installed on one side of the top of the top cover 2, and its output end is connected to the gear 52. Through the meshing of the gear 52 and the gear ring 53, the power is efficiently transmitted. The gear ring 53 is rotatably connected to the outside of the base plate 65, driving the entire stirring assembly 61 to rotate. The shaft 611 is fixed to the bottom of the gear 52. The stirring plate 612 on the outer surface is staggered with the second ultraviolet lamp 64. During operation, it can effectively disturb the water flow, allowing the second ultraviolet lamp 64 to fully utilize its multi-angle irradiation advantage. The propeller 613 is connected at equal intervals to the bottom of the gear ring 53, located between the first ultraviolet lamp 63 and the second ultraviolet lamp 64. Its conical bottom design extends into the discharge hopper 8, which not only makes the ballast water roll up and down during the stirring process, allowing it to receive ultraviolet irradiation from all directions, avoiding the killing corners of the disinfection, and achieving efficient and thorough ultraviolet disinfection, but also assists in drainage after treatment, optimizing the entire treatment process and greatly improving the practicality and treatment efficiency of the device.

[0041] refer to Figures 3-8The filtration mechanism 7 includes a filter tank 71, with a drain hopper 72 fixedly installed at the bottom of the filter tank 71. The drain hopper 72 is fixedly installed on the top of the top cover 2 away from the drive motor 51. A filter assembly 73 is movably installed inside the filter tank 71. The bottom of the filter assembly 73 passes through the top cover 2 and is connected to a gear 52. A water inlet pipe 74 is fixedly installed at the top of the filter tank 71, and a connecting flange 75 is fixedly installed at the input end of the water inlet pipe 74. The filter assembly 73 includes a filter screen 731, which is conical in shape and fixedly installed at the bottom inside the filter tank 71. A rotating shaft 732 is rotatably connected to the middle of the filter screen 731. The bottom of the rotating shaft 732 passes through the filter screen 731 and is fixedly connected to the top of a gear 52. Cleaning frames 733 are fixedly connected at equal intervals on the top outer surface of the rotating shaft 732. Telescopic springs 734 are fixedly connected at equal intervals inside the cleaning frames 733. A sliding plate 735 is slidably connected to the inner side of the cleaning frame 733. The outer side of the sliding plate 735 is fixedly connected to the end of the telescopic spring 734. A brush plate 736 is fixedly installed at the bottom of the sliding plate 735. The bottom of the brush plate 736 is fitted to the outer surface of the filter screen 731. A scraping frame 737 is fixedly connected to the outer side of the brush plate 736. The outer side of the scraping frame 737 is fitted to the bottom of the filter canister 71. A discharge pipe 76 is fixedly installed on the lower outer side of filter tank 71. The input end of the discharge pipe 76 is located on the upper side of the filter screen 731 inside filter tank 71. A collection tank 77 is fixedly installed on the output end of the discharge pipe 76. A threaded cap 78 is threadedly connected to the bottom output end of the collection tank 77. Through the connecting flange 75 and the water inlet pipe 74, it can be easily connected to an external ballast water pipeline, allowing ballast water to flow into the conical filter screen 731. The unique conical design facilitates the sliding of impurities. The rotating shaft 732 rotatably connected in the middle of the filter screen 731 is connected to the gear 52 and can be operated by the power of the drive mechanism 5. When the gear 52 rotates and drives the rotating shaft 732, the cleaning rack on its top... As the filter rotates, the telescopic spring 734 inside the cleaning frame 733 pushes the sliding plate 735, causing the brush plate 736 to fit tightly against the outer surface of the filter screen 731, effectively cleaning the filter screen. At the same time, the scraping frame 737 on the outside of the brush plate 736 scrapes the bottom of the filter tank 71, guiding the filtered impurities to the discharge pipe 76 and into the collection tank 77. After processing is complete, the threaded cap 78 at the bottom of the collection tank 77 can be unscrewed to easily clean the waste residue. The entire filtration mechanism 7 not only achieves efficient filtration of ballast water, but also cleverly utilizes the power of the drive mechanism 5 to complete automatic cleaning, greatly improving the overall operating efficiency and convenience of the device, and ensuring the smoothness and environmental friendliness of the processing flow.

[0042] A method for ultraviolet treatment of ship ballast water includes the following steps:

[0043] Step 1: Connect the pipes. Connect the inlet pipe 74 to the external ballast water pipe through the connecting flange 75 so that the ballast water can flow into the device.

[0044] Step 2: Preliminary filtration. Ballast water enters the filter tank 71 through the inlet pipe 74 and is preliminarily filtered by the filter screen 731. Large particles of impurities are intercepted on the outer surface of the filter screen 731.

[0045] Step 3: Start the drive motor 51. After filtration is completed, start the drive motor 51. The motor drives the gear 52 to rotate. Since the gear 52 meshes with the gear ring 53, the gear ring 53 rotates synchronously. The rotation of the gear ring 53 causes the propeller 613 to start working. At the same time, the rotation of one gear 52 drives multiple other gears 52 to work together. The shaft 611 at the bottom of the gear 52 also rotates. The stirring plate 612 on the shaft 611 starts to rotate.

[0046] Step 4: Stirring and disinfection. The stirring plate 612 stirs between the second ultraviolet lamps 64, and the propeller 613 stirs the ballast water between the first ultraviolet lamp 63 and the second ultraviolet lamp 64 to ensure that the ballast water flows stably between the two lamps. The propeller 613 and the stirring plate 612 stir efficiently between the two lamps, so that the ultraviolet light evenly covers the ballast water in all positions in the treatment tank 1. The propeller 613 also drives the ballast water to roll up and down, so as to achieve efficient and uniform ultraviolet disinfection of the ballast water.

[0047] Step 5: Impurity cleaning. During the operation of the drive motor 51, the motor drives the gear 52 to rotate. Through the meshing transmission of the gear ring 53, all gears 52 rotate synchronously, driving the rotating shaft 732 and the cleaning frame 733 connected to the outside of the rotating shaft 732 to rotate. The telescopic spring 734 inside the cleaning frame 733 pushes the slide plate 735 to move, so that the brush bristles of the brush plate 736 are tightly attached to the outer surface of the filter screen 731. As the drive motor 51 continues to run, the rotating shaft 732 drives the brush plate 736 to brush and clean the top of the filter screen 731. The scraping frame 737 scrapes the bottom of the filter tank 71. The filtered impurities slide down the conical surface of the conical filter screen 731 to the bottom of the filter tank 71, and are then pushed by the scraping frame 737 to the inlet of the discharge pipe 76, and finally enter the collection tank 77.

[0048] Step Six: Clean up the waste residue. After the equipment is used up, open the threaded cover 78 at the bottom and clean up the waste residue in the collection tank 77.

[0049] Operating principle and advantages: By designing the coordinated operation of the drive mechanism 5 and the disinfection mechanism 6, the efficiency of this device in treating ballast water can be significantly improved during use. In the ballast water treatment process, the filtration mechanism 7 first performs preliminary filtration of the water. After filtration is completed, the drive motor 51 is started, and the motor drives the gear 52 to rotate. Since the gear 52 meshes with the gear ring 53, it drives the gear ring 53 to rotate synchronously. The rotation of the gear ring 53 causes the propeller 613 to start working. At the same time, the rotation of one gear 52 can drive multiple other gears 52 to rotate together, thereby causing the shaft 611 at the bottom of the gear 52 to rotate. The stirring plates 612 evenly distributed on the shaft 611 also start to rotate. 612 stirs between the second ultraviolet lamp 64, while propeller 613 agitates the ballast water between the first ultraviolet lamp 63 and the second ultraviolet lamp 64, ensuring stable flow of the ballast water between the two lamps. Since propeller 613 and stirring plate 612 are both located between the first ultraviolet lamp 63 and the second ultraviolet lamp 64, they can stir more efficiently, greatly improving the contact effect between the ultraviolet lamp and the ballast water, so that the ultraviolet light can evenly cover the ballast water in all positions in the treatment tank 1. In addition, propeller 613 can drive the ballast water to roll up and down, further enhancing the overall stirring effect, effectively avoiding dead corners during ultraviolet disinfection, and achieving efficient and uniform ultraviolet disinfection of the ballast water.

[0050] By setting up the filtration mechanism 7, when the drive motor 51 is running, the motor drives the gear 52 to rotate. Through the meshing transmission of the gear ring 53, all gears 52 rotate synchronously. The rotation of the gears 52 drives the rotating shaft 732 to rotate, which in turn causes the cleaning frame 733 connected to the outside of the rotating shaft 732 to rotate accordingly. In actual use, the inlet pipe 74 is connected to the external ballast water pipe through the connecting flange 75. Ballast water enters the filter tank 71 through the inlet pipe 74 and is filtered by the filter screen 731, which intercepts large particles of impurities on the outer surface of the filter screen 731. At the same time, the drive motor 51 drives the gear 52 to rotate, which in turn drives the rotating shaft 732 and the cleaning frame 733 to rotate. The telescopic spring 734 inside the cleaning frame 733 pushes the slide plate 735 to move, causing the brush plate 733 to rotate. The bristles of the brush 736 are tightly attached to the outer surface of the filter screen 731. As the drive motor 51 continues to run, the rotating shaft 732 drives the brush plate 736 to clean the top of the filter screen 731 by brushing, while the scraping frame 737 scrapes the bottom of the filter tank 71. Since the filter screen 731 is conical, the filtered impurities can slide down the conical surface to the bottom of the filter tank 71, and then be pushed by the scraping frame 737 to the inlet of the discharge pipe 76, and finally enter the collection tank 77. After the equipment is used, the waste residue in the collection tank 77 can be easily cleaned by simply opening the threaded cover 78 at the bottom. It can be seen that the filtration mechanism 7 of this equipment cleverly utilizes the power of the drive mechanism 5 to achieve automatic cleaning, which provides great convenience for the filtration, purification and disinfection of ballast water and greatly enhances the practicality of the device.

Claims

1. A ship ballast water UV treatment apparatus comprising a treatment tank (1), characterised in that: The top of the processing tank (1) is fixedly installed with a top cover (2), one side of the top of the top cover (2) is fixedly installed with a filtering mechanism (7), the bottom of the filtering mechanism (7) penetrates the inside of the top cover (2) and the processing tank (1) and is connected, the top cover (2) is fixedly installed with a driving mechanism (5), the bottom of the driving mechanism (5) is provided with a disinfecting mechanism (6), the disinfecting mechanism (6) extends in the inside of the processing tank (1), the bottom of the processing tank (1) is fixedly installed with a discharge hopper (8), the bottom of the discharge hopper (8) is fixedly installed with a drain valve (9), the output end of the drain valve (9) is fixedly installed with a drain pipe (10), the outside of the processing tank (1) is fixedly installed with a mounting bracket (4), the bottom of the mounting bracket (4) is fixedly installed with support legs (3) at equal intervals; The disinfecting mechanism (6) comprises a stirring assembly (61) and a fixed disc (62), the fixed disc (62) is fixedly installed at the bottom of the top cover (2), the bottom of the fixed disc (62) is fixedly installed with first ultraviolet lamps (63) at equal intervals in a ring shape, the stirring assembly (61) is fixedly installed at the bottom of the driving mechanism (5), and the stirring assembly (61) is arranged at the outside of the first ultraviolet lamps (63). The disinfecting mechanism (6) further comprises a base disc (65), the base disc (65) is fixedly connected to the bottom of the top cover (2) at equal intervals in a ring shape and is located at the outside of each first ultraviolet lamp (63), the bottom of the base disc (65) is fixedly installed with second ultraviolet lamps (64), and the second ultraviolet lamps (64) are arranged at the gaps of the stirring assembly (61). The driving mechanism (5) comprises a driving motor (51), a gear (52) and a gear ring (53), the gear ring (53) and the gear (52) are connected in meshing, the driving motor (51) is fixedly installed at the top of the top cover (2) away from the disinfecting mechanism (6), the gears (52) are arranged at the bottom of the top cover (2) at equal intervals in a ring shape, the gear ring (53) is rotatably connected to the outside of the base disc (65), the output end of the driving motor (51) penetrates the top of a gear (52) and is fixedly connected, and the stirring assembly (61) is installed at the bottom of the gear (52) and the gear ring (53). The stirring assembly (61) comprises shaft bodies (611), the shaft bodies (611) are fixedly installed at the bottom of the gear (52), the outer surfaces of the shaft bodies (611) are fixedly installed with stirring plates (612) at equal intervals, and the shaft bodies (611) and the second ultraviolet lamps (64) are arranged in a circular ring shape at equal intervals and staggeredly. The stirring assembly (61) further comprises propellers (613), the propellers (613) are fixedly connected to the bottom of the gear ring (53) at equal intervals, the propellers (613) are arranged between the inside of the first ultraviolet lamps (63) and the second ultraviolet lamps (64), and the bottom of the propeller (613) is conical and extends into the conical discharge hopper (8).

2. A shipboard ballast water ultraviolet treatment device according to claim 1, wherein: The filtering mechanism (7) comprises a filter tank (71), the bottom of the filter tank (71) is fixedly installed with a drain hopper (72), the drain hopper (72) is fixedly installed on the top of the top cover (2) away from one side of the driving motor (51), the inside of the filter tank (71) is movably installed with a filter assembly (73), and the bottom of the filter assembly (73) is connected with the top cover (2) and a gear (52) in a penetrating mode.

3. A shipboard ballast water ultraviolet treatment device according to claim 2, wherein: The top of the filter tank (71) is fixedly installed with a water inlet pipe (74), and the input end of the water inlet pipe (74) is fixedly installed with a connecting flange (75).

4. A shipboard ballast water ultraviolet treatment device according to claim 3, wherein: The filter assembly (73) comprises a filter cover (731), the filter cover (731) is in a conical shape, the filter cover (731) is fixedly installed at the bottom in the filter tank (71), the middle portion of the filter cover (731) is rotatably connected with a rotating shaft (732), the bottom of the rotating shaft (732) is fixedly connected with the top of a gear (52) in a penetrating mode, the top outer surface of the rotating shaft (732) is fixedly connected with cleaning frames (733) at equal intervals, the inside of each cleaning frame (733) is fixedly connected with an extension spring (734) at equal intervals, the inside of each cleaning frame (733) is slidably connected with a sliding plate (735), the outside of the sliding plate (735) and the end of the extension spring (734) are fixedly connected, the bottom of the sliding plate (735) is fixedly installed with a brush plate (736), the bottom of the brush plate (736) is attached to the outer surface of the filter cover (731), and the outside of the brush plate (736) is fixedly connected with a scraping frame (737).

5. A shipboard ballast water ultraviolet treatment device according to claim 4, wherein: The outside lower end of the filter tank (71) is fixedly installed with a discharge pipe (76), the input end of the discharge pipe (76) is arranged on one side of the upper end of the filter cover (731) in the filter tank (71), and the output end of the discharge pipe (76) is fixedly installed with a collecting tank (77).

6. A ship ballast water ultraviolet treatment method using the ship ballast water ultraviolet treatment device according to claim 5, characterized by, The method comprises the following steps: Step one: connecting the pipeline, the water inlet pipe (74) is connected with the external ballast water pipeline through the connecting flange (75), so that the ballast water can flow into the device; Step two: preliminary filtration, the ballast water enters the inside of the filter tank (71) through the water inlet pipe (74), and is preliminarily filtered by the filter cover (731), and large-particle impurities are intercepted on the outer surface of the filter cover (731); Step three: starting the driving motor (51), after the filtration is completed, the driving motor (51) is started, the motor is operated to drive the gear (52) to rotate, the gear (52) is engaged with the gear ring (53), the gear ring (53) is synchronously rotated, the rotation of the gear ring (53) drives the propeller (613) to start working, and one gear (52) rotates to drive other gears (52) to be linked, the shaft body (611) at the bottom of the gear (52) also rotates, and the stirring plate (612) on the shaft body (611) starts to rotate; Step four: stirring and sterilization, the stirring plate (612) stirs between the second ultraviolet lamp (64), the propeller (613) stirs the ballast water between the first ultraviolet lamp (63) and the second ultraviolet lamp (64), ensuring that the ballast water flows stably between the two lamps, the propeller (613) and the stirring plate (612) efficiently stir between the two lamps, making the ultraviolet light evenly cover the ballast water in each position of the treatment tank (1), and the propeller (613) also drives the ballast water to roll up and down, realizing efficient and uniform ultraviolet sterilization of the ballast water; Step five: impurity cleaning, during the operation of the driving motor (51), the motor drives the gear (52) to rotate, and through the meshing transmission of the gear ring (53), all gears (52) rotate synchronously, driving the rotating shaft (732) and the cleaning frame (733) connected to the outside of the rotating shaft (732) to rotate, the extension spring (734) inside the cleaning frame (733) pushes the sliding plate (735) to move, so that the brush plate (736) is tightly attached to the outer surface of the filter cover (731), with the continuous operation of the driving motor (51), the rotating shaft (732) drives the brush plate (736) to brush the top of the filter cover (731), and the scratching frame (737) scratches the bottom of the filter tank (71), the filtered impurities slide along the tapered surface of the tapered filter cover (731) to the bottom of the filter tank (71), and then are pushed by the scratching frame (737) to the inlet of the discharge pipe (76), and finally enter the collection tank (77); Step six: cleaning waste residue, after the equipment is used, open the threaded cover (78) at the bottom to clean the waste residue in the collection tank (77).

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