Ship ballast water treatment system with composite motion high pressure backwash function

Abstract

The present application relates to ship ballast water treatment technical field, specifically disclose a kind of ship ballast water treatment system with composite motion high pressure backwash function, including base frame, the top side of the base frame is fixedly installed with filter mechanism, during the application of this technical solution, it can be with the positive and negative rotation control of driving motor and transmission mechanism, drive main shaft completes the composite motion of circumferential rotation and axial up and down operation, high pressure water flow that backflushing nozzle sprays can be swept through the inner side filter wall surface of circular precision filter screen layer by layer, cooperate the negative pressure adsorption of suction module, filter residue, sewage that is washed and stripped can be quickly collected to the lower half of main shaft by suction nozzle, filter blowdown is completed by precision filter bottom blowdown pipe and blowdown pump, to reach the effect that stain in filter screen inner wall is completely removed, whole blowdown operation does not need to disassemble filter, combined with the pipeline control of blowdown pipeline mechanism, the discharge of dirt of rough filtration, precision filtration can be completed, improve blowdown efficiency, to ensure that ballast water treatment efficiency.

Description

Technical Field

[0001] This invention relates to the field of ship ballast water treatment technology, and in particular to a ship ballast water treatment system with a composite motion high-pressure backwashing function. Background Technology

[0002] Ballast water treatment systems are essential core components for ocean-going vessels. They are mainly used to filter and deactivate pollutants during ballasting and unloading processes during navigation, berthing, and operations. They can effectively remove suspended solids, marine microorganisms, particulate matter, and other pollutants from ballast water, control marine ecological pollution caused by the migration of organisms in different sea areas, maintain marine ecological balance, meet the D-2 ballast water discharge standards required by the International Maritime Organization, and ensure the compliance of ship navigation operations and the safety of the marine ecological environment. Filtration is also the most critical pretreatment step in the entire ballast water treatment process, directly determining the subsequent water purification effect and the continuity of the overall water treatment operation.

[0003] The conventional ballast water filtration systems currently used in the shipbuilding industry rely on filter structures to intercept and filter impurities in the water. They continuously circulate and filter ballast water in various operational scenarios, such as near-shore navigation and ocean-going cross-sea navigation. This is the mainstream technology for ballast water purification. These filtration systems have a simple structure and strong adaptability, and can meet the basic water filtration needs of ships under normal operating conditions. They are also the most widely used ballast water pretreatment equipment on the market, providing basic technical support for the compliant discharge of ship ballast water and the protection of ship equipment.

[0004] During long-term continuous operation, existing conventional ballast water filtration systems accumulate and adhere a large amount of water impurities and filter cake on the filter screen surface. The accumulated impurities directly clog the filter screen pores, significantly hindering the normal flow of ballast water and the progress of filtration operations. Existing equipment is not equipped with an efficient filter cake self-removal structure and automatic flushing mechanism, making it impossible to clean the filter screen while the equipment is running. In the special scenario of ocean voyages without shore-based maintenance support, once the filter screen becomes severely clogged, the staff must shut down the entire ballast water treatment system and manually disassemble the filter screen, clean the filter cake, and reassemble it to complete the equipment maintenance. The entire cleaning process is time-consuming and cumbersome, which directly interrupts the ship's ballast water treatment operation and significantly reduces the overall treatment efficiency of the system, making it unsuitable for the needs of long-term, continuous ocean voyages. Summary of the Invention

[0005] The purpose of this invention is to provide a ship ballast water treatment system with a composite motion high-pressure backwashing function to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides a ship ballast water treatment system with a composite motion high-pressure backwashing function, including a base frame, a filter mechanism fixedly installed on one side of the top of the base frame, a sewage discharge pipe mechanism provided at the output end of the filter mechanism, and an inactivation mechanism fixedly installed on the other side of the top of the base frame, the output end of the inactivation mechanism being connected to the output end of the filter mechanism;

[0007] The filtration mechanism includes a coarse filter module, which is fixedly connected to the base frame. A fine filter module is fixedly installed on the upper part of the coarse filter module. A circular fine filter screen is fixedly installed inside the fine filter module. A backwash discharge module is movably installed inside the fine filter module. A transmission module is provided on the top of the fine filter module. The bottom of the transmission module is connected to the top of the main shaft of the backwash discharge module.

[0008] Furthermore, a power distribution frame is fixedly installed on one side of the base frame, and a power distribution box is fixedly installed on the power distribution frame. The power distribution box contains a controller, a display screen is provided on the upper outer side of the power distribution box, and several control buttons are provided on the lower outer side of the power distribution box.

[0009] Furthermore, the coarse filter module includes a coarse filter tank, with supports fixedly installed at both ends of the outer surface of the coarse filter tank. The bottom of the supports is connected to the base frame. A conical coarse filter screen is fixedly installed inside the coarse filter tank. A coarse filter discharge pipe is provided at the apex of the conical coarse filter screen. The output end of the coarse filter discharge pipe is connected to the sewage discharge pipeline mechanism. The fine filter module is installed on the top of the coarse filter tank through a connecting flange. The bottom of the fine filter module is connected to the top of the coarse filter tank through a connecting flange.

[0010] Furthermore, the transmission module includes a power housing, which is screwed onto the top of the fine filter module. The bottom of the power housing seals the gap between the fine filter module and the power housing with a sealing gasket. A drive motor is located on the top of the power housing. A transmission shaft is rotatably connected to the upper inner end of the power housing. The outer surface of the transmission shaft has external threads. The drive motor drives the transmission shaft to rotate through a gearbox. A transmission nut is slidably connected to the lower inner end of the power housing. The transmission nut is threaded onto the transmission shaft through external threads. The bottom of the transmission nut is connected to the backflushing and sewage discharge module. Limit switches are fixedly connected to both ends of one side of the power housing. The detection end of the limit switch extends into the limit sleeve. The transmission nut is located between the inner sides of the two limit switches. The overall cross-sectional shape of the transmission nut is rectangular. The lower inner end of the power housing is also rectangular. The rectangular lower end of the power housing is used to limit the transmission nut on the rectangular outer surface, ensuring stable up-and-down movement of the power housing.

[0011] Furthermore, the backflushing and sewage discharge module includes a main shaft, which is rotatably connected to the interior of the fine filter module. An inlet channel is provided at the upper end of the main shaft, and a suction channel is provided at the other end. The inlet channel and suction channel are separated and not connected by a partition. The top end of the main shaft extends into the power housing, and the end of the main shaft away from the power housing extends movably into the circular fine filter screen. A sealing ring is provided where the main shaft penetrates the circular fine filter screen. An external spray module is provided on the outer surface of the main shaft, and the external spray module moves outside the circular fine filter screen. A suction module is also provided on the outer surface of the main shaft, and the suction module moves inside the circular fine filter screen. The output end of the external spray module is located outside the input end of the suction module. A hexagonal support rod is fixedly installed at the top end of the main shaft, and the top end of the main shaft is rotatably connected to the bottom of the transmission nut. A regular hexagonal groove is provided at the bottom of the transmission shaft. The end of the support rod extends and slides within a matching regular hexagonal slot. The hexagonal support rod extends into the regular hexagonal slot of the drive shaft. As the drive shaft rotates, the hexagonal support rod drives the main shaft at the bottom of the drive nut to rotate via the regular hexagonal slot. Simultaneously, when the drive motor rotates via the gearbox, the external thread will press against the drive nut. Since the drive nut is limited by the rectangular shape at the lower end of the power housing, it cannot rotate. Therefore, the drive of the external thread will cause the drive nut to move up and down. By controlling the drive motor to drive the drive shaft to rotate reciprocally, the drive nut can be moved up and down. During the up and down movement of the drive nut, the hexagonal support rod slides within the regular hexagonal slot. Since the cross-section of the hexagonal support rod and the regular hexagonal slot is a regular hexagon, the drive shaft can drive the main shaft to rotate via the regular hexagonal slot. This achieves the function of thoroughly rinsing the circular fine filter screen by simultaneously driving the main shaft to rotate reciprocally and move up and down.

[0012] Furthermore, the external spray module includes a liquid inlet channel, a backflush inlet pipe, and a backflush side spray pipe. The liquid inlet channel is located at the lower end of the power housing. The outer surface of the end of the main shaft located in the liquid inlet channel has several backflush cleaning fluid inlet holes. The backflush cleaning fluid inlet holes are connected to the liquid inlet channel. The backflush inlet pipe is fixedly connected to one side of the power housing. The outer end of the backflush inlet pipe is provided with an external flange. The output end of the backflush inlet pipe is connected to the liquid inlet channel inside the main shaft through the liquid inlet channel and the backflush cleaning fluid inlet holes. The backflush side spray pipes are fixedly installed on the outer surface of the main shaft in a ring-shaped arrangement with equal spacing. The backflush side spray pipes are generally L-shaped. Backflush nozzles are arranged linearly with equal spacing on the inner side of the backflush side spray pipes. The backflush nozzles are located outside the circular fine filter screen.

[0013] Furthermore, a high-pressure water pump is fixedly connected to one side of the top of the base frame, and the output end of the high-pressure water pump is connected to the backflushing inlet pipe through a connecting pipe and an external flange.

[0014] Furthermore, the suction module includes a fine filter slag discharge pipe, an inner suction pipe, and a rotary joint. The fine filter slag discharge pipe is fixedly connected to one end of the fine filter module near the base frame. The rotary joint is located at the lower end of the fine filter module and is connected to the fine filter slag discharge pipe. The bottom end of the main shaft is connected to the rotating end of the rotary joint. The output end of the suction channel is connected to the input end of the rotary joint. The inner suction pipe is arranged in a ring at equal intervals and fixedly connected to the outer surface of the main shaft. The inner suction pipe is located inside the circular fine filter screen. Suction heads are fixedly connected at equal intervals to the outer side of the inner suction pipe. The suction heads are located inside each backwash nozzle. The output end of the fine filter slag discharge pipe is connected to the input end of the sewage discharge pipeline mechanism. A switch valve is provided at the connection between the fine filter slag discharge pipe, the coarse filter slag discharge pipe, and the sewage discharge pipeline mechanism for switching during backwash sewage discharge. At the same time, a switch valve is also provided on the backwash inlet pipe to assist in switching the backwash water inlet switch.

[0015] Furthermore, the sewage discharge pipeline mechanism includes a sewage pump, which is fixedly connected to the base frame. The input end of the sewage pump is fixedly connected to a suction tee, and the output end of the sewage pump is fixedly installed with a sewage discharge tee. The two outer input ends of the suction tee are respectively connected to the fine filter slag discharge pipe and the coarse filter slag discharge pipe. The two output ends of the sewage discharge tee are equipped with regulating valves for discharging sewage into the sea or into a ship. The suction tee is also equipped with regulating valves to draw in the coarse filter module or the fine filter module as needed, or simultaneously draw in both the coarse filter module and the fine filter module. The specific selection and switching can be flexibly selected according to the needs.

[0016] Furthermore, the inactivation mechanism includes a main drain pipe, which is fixedly installed at the output end of the fine filtration module. An inactivation unit is installed at the output end of the main drain pipe via a flange. Several ultraviolet lamp assemblies are fixedly installed inside the inactivation unit. A cooling module is provided on the outside of the inactivation unit. The outer ends of the ultraviolet lamp assemblies extend into the cooling module. A ballast water treatment drain pipe is fixedly installed at the top output end of the inactivation unit.

[0017] The cooling module includes a cooling pump, a cooling core assembly, and a cooling input tee. The cooling input tee is fixedly connected to the top of the drain main pipe, and its input end is connected to the inside of the drain main pipe. The cooling pump is fixedly installed on one side of the drain main pipe, and a cooling output tee is fixedly installed at its input end. The cooling core assembly is fixedly installed on both sides of the inactivation unit. Both ends of the UV lamp assembly extend into the cooling core assembly. A heat exchange coil is fixedly connected inside the cooling core assembly, and its output end is connected to the input end of the cooling output tee. The output end of the cooling pump is connected to the drain main pipe. Most of the drain main pipe passes through… The filtered water enters the inactivation unit and is inactivated by the UV lamp assembly. After inactivation, it is discharged through the ballast water drain pipe. A small portion enters the cooling input tee and then flows through the two outputs of the cooling input tee into the heat exchange coils in the cooling core assembly. The heat exchange coils are in close contact with both ends of the UV lamp assembly to dissipate heat. At this time, the filtered ballast water after heat exchange enters the cooling output tee through the two inputs of the cooling output tee and then flows through one output of the cooling output tee into the cooling pump for cooling. After cooling, it re-enters the drain pipe and then enters the inactivation unit for inactivation. The overall liquid cooling can directly utilize the inactivated ballast water for liquid cooling, which can improve the lifespan of the UV lamp assembly. The UV lamp assembly is specifically set as a high-efficiency UV-C band UV lamp assembly.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] Firstly, in this invention, during the application of this technical solution, by setting up a transmission module and a backwashing and sewage discharge mechanism, the main shaft can be driven to complete a composite motion of rotation and vertical reciprocating oscillation by means of the forward and reverse rotation control of the drive motor. The high-pressure water jet sprayed from the backwash nozzle can sweep through the inner filter wall of the circular fine filter layer by layer. With the negative pressure adsorption effect of the suction module, most of the filter residue and sewage that are washed off can be directly collected by the suction head. The dirt gathered at the bottom of the fine filter module can flow into the fine filter slag discharge pipe through the connecting groove to be extracted, thereby achieving the effect of online and comprehensive removal of dirt on the inner wall of the filter screen. The entire sewage discharge operation does not require disassembling the circular fine filter screen. Combined with the pipeline switching of the sewage discharge pipeline mechanism, the dirt can be discharged from both the coarse filter module and the fine filter module, reducing the steps of manual operation. The equipment can quickly perform sewage discharge operation during the process of treating ballast water, which can improve work efficiency.

[0020] Secondly, during the application of this technical solution, by setting up an inactivation mechanism and a cooling module, a portion of the filtered ballast water can be diverted into the heat exchange coil during use. The diverted water can perform heat exchange and cooling on the UV lamp assembly, thereby achieving the effect of simultaneous heat dissipation of the lamp body during the inactivation operation. The cooling operation does not require a separate cooling water source. The filtered ballast water can directly serve as a cooling medium. The water that has been heated by heat exchange flows back into the drain pipe and is sent back to the inactivation unit to participate in water inactivation. No additional water consumption is generated, reducing the expenses related to the purchase of components and pipeline layout of additional heat dissipation equipment. Under the condition of continuous ballast water supply, the cooling module can run continuously along with the inactivation process. The heat generated by the UV lamp assembly can be continuously removed, and the microorganisms, plankton, and harmful bacteria inside the ballast water can be inactivated. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the rear view structure in this invention;

[0023] Figure 3 This is a top view of the structure in this invention;

[0024] Figure 4 This is a schematic diagram of the structure viewed from below in this invention;

[0025] Figure 5 This is a schematic diagram of the internal structure of the coarse filter module in this invention;

[0026] Figure 6 This is a schematic diagram of the overall structure of the fine filtration module in this invention;

[0027] Figure 7 This is a schematic diagram of the internal structure of the fine filtration module in this invention;

[0028] Figure 8 This is a schematic diagram of the transmission module structure in this invention;

[0029] Figure 9 This is a schematic diagram of the sewage pipeline structure in this invention;

[0030] Figure 10 This is a schematic diagram of the inactivation mechanism near the fine filtration module in this invention;

[0031] Figure 11 This is a schematic diagram of the structure of the inactivation mechanism on the side away from the fine filtration module in this invention;

[0032] Figure 12 This is a schematic diagram of the internal structure of the inactivation mechanism in this invention.

[0033] In the diagram: 1. Base frame; 2. Filtration mechanism; 21. Coarse filter module; 211. Coarse filter tank; 212. Support; 213. Conical coarse filter screen cover; 214. Coarse filter slag discharge pipe; 22. Fine filter module; 23. Circular fine filter screen; 24. Backflushing sludge discharge module; 241. Main shaft; 242. Liquid inlet channel; 243. Suction channel; 244. External spray module; 2441. Liquid inlet cavity; 2442. Backflushing liquid inlet pipe; 2443. Backflushing side spray pipe; 2444. Backflushing cleaning fluid inlet hole; 2445. Backflushing nozzle; 245. Suction module; 2451. Fine filter slag discharge pipe; 2452. Internal suction pipe; 2453. Rotary joint; 2454. Suction head; 24 6. Hexagonal support rod; 247. Regular hexagonal slot; 25. Transmission module; 251. Power housing; 252. Drive motor; 253. Drive shaft; 254. External thread; 255. Transmission nut; 256. Limit switch; 26. High-pressure water pump; 3. Sewage pipe mechanism; 31. Sewage pump; 32. Suction tee; 33. Sewage tee; 4. Distribution box; 5. Distribution frame; 6. Inactivation mechanism; 61. Main drain pipe; 62. Inactivation unit; 63. Ultraviolet lamp assembly; 64. Ballast water treatment pipe; 65. Cooling module; 651. Cooling pump; 652. Cooling core assembly; 653. Cooling input tee; 654. Heat exchange coil; 655. Cooling output tee. Detailed Implementation

[0034] Example

[0035] Please see Figures 1-12 In this embodiment of the invention, a ship ballast water treatment system with a composite motion high-pressure backwashing function includes a base frame 1, a filter mechanism 2 is fixedly installed on one side of the top of the base frame 1, a sewage discharge pipe mechanism 3 is provided at the output end of the filter mechanism 2, and an inactivation mechanism 6 is fixedly installed on the other side of the top of the base frame 1, with the output end of the inactivation mechanism 6 connected to the output end of the filter mechanism 2.

[0036] The filtration mechanism 2 includes a coarse filter module 21, which is fixedly connected to the base frame 1 on the side away from the inactivation mechanism 6. A fine filter module 22 is fixedly installed on the top of the coarse filter module 21. A circular fine filter screen 23 is fixedly installed inside the fine filter module 22. A backwash and sewage discharge module 24 is movably installed inside the fine filter module 22. A transmission module 25 is provided on the top of the fine filter module 22. The bottom of the transmission module 25 is connected to the top of the backwash and sewage discharge module 24. During the application of this device, the filtration mechanism 2, the sewage discharge pipeline mechanism 3, and the inactivation mechanism 6 work together to complete the complete treatment process of filtration, sewage discharge, and water inactivation of ship ballast water. The combination structure of the coarse filter module 21, the fine filter module 22, the circular fine filter screen 23, the backwash and sewage discharge module 24, and the transmission module 25 can separate ballast water. The filtration process involves multiple layers of filtration. The transmission module 25 drives the backwash and sludge discharge module 24 to complete the corresponding sludge discharge action inside the fine filter module 22, which can promptly remove various filter residues and impurities accumulated during the filtration process. The circular fine filter screen 23 is arranged to fully cover the connection between the coarse filter module 21 and the fine filter module 22, enabling comprehensive and fine filtration of the ballast water after coarse filtration, reducing the pass rate of water impurities. Various pollutants generated during the filtration process can be discharged outward through the sludge discharge pipeline mechanism 3, which can continuously maintain the cleanliness of the filtration mechanism 2. The filtered ballast water can be directly transported to the inactivation mechanism 6 for inactivation treatment, allowing the ballast water filtration, sludge discharge, and inactivation processes to form a continuous operation flow, and can complete the removal of impurities, cleaning of pollutants, and water purification of ballast water step by step, effectively treating the ballast water generated during ship operation.

[0037] Please see Figures 1-4A power distribution frame 5 is fixedly installed on one side of the base frame 1. A power distribution box 4 is fixedly installed on the power distribution frame 5. A controller is installed inside the power distribution box 4. A display screen is installed on the upper outer side of the power distribution box 4, and several control buttons are installed on the lower outer side of the power distribution box 4. During the application of this device, by setting up the power distribution frame 5 and the power distribution box 4, it can provide power supply and operation control conditions for the entire system. The controller installed inside the power distribution box 4 can receive signals and issue corresponding execution commands, and can schedule the filtration mechanism 2, the sewage pipe mechanism 3, and the inactivation mechanism 6 to complete the corresponding operation actions. The display screen on the upper side can intuitively display various operating parameters generated during the operation of the equipment, making it convenient for operators to obtain real-time working information of the equipment. Several control buttons on the lower side of the distribution box 4 can receive manual operation commands from the operator, switch different working modes of the equipment, and start and stop the entire processing system. The distribution rack 5 plays a role in fixing the distribution box 4, maintaining the installation position of the distribution box 4, reducing positional displacement caused by equipment vibration, and allowing operators to directly complete parameter viewing, mode switching, and start / stop control operations from the outside of the equipment.

[0038] Please see Figures 5-8The coarse filtration module 21 includes a coarse filter tank 211. Supports 212 are fixedly installed at both ends of the outer surface of the coarse filter tank 211. The bottom of the supports 212 is connected to the base frame 1. A conical coarse filter screen 213 is fixedly installed inside the coarse filter tank 211. A coarse filter discharge pipe 214 is provided at the apex of the conical coarse filter screen 213. The output end of the coarse filter discharge pipe 214 is connected to the sewage discharge pipeline mechanism 3. The fine filtration module 22 is installed on the top of the coarse filter tank 211 via a connecting flange. The bottom of the fine filtration module 22 is connected to the top of the coarse filter tank 211 via a connecting flange. The transmission module 25 includes a power housing 251. The power housing 251 is installed on the top of the fine filtration module 22 with screws. The bottom of the power housing 251 is sealed to the fine filtration module 22 with a sealing gasket. At the gap between the power housing 251 and the drive housing 252, a drive motor 252 is installed on the top of the power housing 251. A transmission shaft 253 is rotatably connected to the upper end of the power housing 251. The outer surface of the transmission shaft 253 is provided with an external thread 254. The drive motor 252 drives the transmission shaft 253 to rotate through a gearbox. A transmission nut 255 is slidably connected to the lower end of the inside of the power housing 251. The transmission nut 255 is threaded onto the transmission shaft 253 through the external thread 254. The bottom of the transmission nut 255 is connected to the backflushing and sewage discharge module 24. Limit switches 256 are fixedly connected to both ends of one side of the power housing 251. The detection end of the limit switch 256 extends into the limit sleeve. The transmission nut 255 is located between the inner sides of the two limit switches 256. This device is used in… During this process, by setting up a coarse filtration module 21 and a transmission module 25, the ballast water entering the coarse filtration module 211 can undergo coarse filtration through a conical coarse filter screen 213. The impurities trapped by the filter can be collected at the apex of the conical coarse filter screen 213 and transported outward through the coarse filtration discharge pipe 214 to the sewage discharge pipeline mechanism 3. The fine filtration module 22 is connected to the top of the coarse filtration module 211 by a connecting flange, allowing the ballast water after coarse filtration to flow directly into the fine filtration module 22 for further fine filtration. The power housing 251 is fixed to the top of the fine filtration module 22 with screws, and the sealing gasket seals the gap between the power housing 251 and the fine filtration module 22, which can reduce water leakage. The drive motor 252... The gearbox drives the transmission shaft 253 inside the power housing 251 to rotate. The external thread 254 on the surface of the transmission shaft 253 forms a threaded engagement with the transmission nut 255. During the rotation of the transmission shaft 253, it can drive the transmission nut 255 to make vertical displacement along the inside of the power housing 251. Limit switches 256 set at both ends of the power housing 251 can monitor the movement stroke of the transmission nut 255 in real time. When the transmission nut 255 touches the upper limit switch 256, the limit switch 256 transmits a signal to the controller. The controller can then promptly control the drive motor 252 to switch the rotation direction. When the transmission nut 255 touches the lower limit switch 256, the equipment automatically switches the motor direction again, thereby realizing the automatic reciprocating vertical movement of the transmission nut 255.The transmission nut 255 synchronously drives the backwash and sewage discharge module 24 to complete the corresponding action, enabling continuous and automated backwash and sewage discharge operations within the fine filter module 22. This cleans impurities remaining on the filter screen without disassembling the housing, ensuring the continuous operation of both coarse and fine filtration processes.

[0039] Please see Figures 5-8The backflushing and sewage discharge module 24 includes a main shaft 241, which is rotatably connected to the interior of the fine filter module 22. One end of the main shaft 241 has an inlet channel 242, and the other end has a suction channel 243. The inlet channel 242 and the suction channel 243 are separated and not connected by a partition. The top end of the main shaft 241 extends into the power housing 251, and the end of the main shaft 241 away from the power housing 251 extends movably into the circular fine filter screen 23. A sealing ring is provided where the circular fine filter screen 23 is penetrated by the main shaft 241. An external spray module 244 is provided on the outer surface of the main shaft 241, and the external spray module 244 moves outside the circular fine filter screen 23. A suction module 245 is also provided on the outer surface of the main shaft 241. 45 is movable within the circular fine filter screen 23. The output end of the external spray module 244 is located outside the input end of the suction module 245. A hexagonal support rod 246 is fixedly installed at the top of the main shaft 241. The top of the main shaft 241 is rotatably connected to the bottom of the transmission nut 255. A regular hexagonal groove 247 is opened at the bottom of the transmission shaft 253. The end of the hexagonal support rod 246 extends and slides in the matching regular hexagonal groove 247. The external spray module 244 includes a liquid inlet channel 2441, a backflushing liquid inlet pipe 2442, and a backflushing side spray pipe 2443. The liquid inlet channel 2441 is opened at the lower end of the power housing 251. Several backflushing cleaning fluid inlet holes 2444 are opened on the outer surface of the end of the main shaft 241 located in the liquid inlet channel 2441. 44 is connected to the inlet channel 242. The backflush inlet pipe 2442 is fixedly connected to one side of the power housing 251. The outer end of the backflush inlet pipe 2442 is provided with an external flange. The output end of the backflush inlet pipe 2442 is connected to the inlet channel 242 inside the main shaft 241 through the inlet cavity 2441 and the backflush cleaning fluid inlet hole 2444. The backflush side nozzles 2443 are arranged in a ring at equal intervals and fixedly installed on the outer surface of the main shaft 241. The backflush side nozzles 2443 are generally L-shaped. The backflush nozzles 2445 are arranged linearly at equal intervals on the inner side of the backflush side nozzles 2443. The backflush nozzles 2445 are located outside the circular fine filter screen 23. A high-pressure water pump 26 is fixedly connected to one side of the top of the base frame 1. The output end of the high-pressure water pump 26 is connected to the inlet channel 2442 through the inlet channel 2441 and the backflush cleaning fluid inlet hole 2444. The pipe is connected to the external flange and the backwash inlet pipe 2442. During the operation of this device, the backwash discharge module 24 allows the flushing liquid output by the high-pressure water pump 26 to be sent into the backwash inlet pipe 2442 through the connecting pipe and the external flange. The liquid flows through the inlet chamber 2441 and the backwash cleaning liquid inlet hole 2444 before entering the inlet channel 242 inside the main shaft 241. It can be delivered to the interior of multiple sets of backwash side spray pipes 2443 arranged in a ring, and then sprayed outward from the backwash nozzle 2445 towards the outside of the circular fine filter screen 23. The hexagonal support rod 246 at the top of the main shaft 241 is slidably fitted inside the regular hexagonal groove 247 at the bottom of the drive shaft 253. The drive shaft 253 transmits rotational power while allowing the main shaft 241 to slide vertically.When the transmission nut 255 drives the main shaft 241 to move vertically, it does not obstruct the transmission of rotational power. The main shaft 241 and the bottom of the transmission nut 255 form a rotatable connection, allowing the main shaft 241 to synchronously rotate and reciprocate vertically. The sealing ring can seal the gaps created by the main shaft 241 passing through the circular fine filter screen 23, reducing liquid leakage from these gaps. The internal partition of the main shaft 241 separates the liquid inlet channel 242 and the suction channel 243, preventing the rinsing liquid from mixing with the suction contaminants. The suction module 245, located inside the circular fine filter screen 23, can move synchronously with the main shaft 241, collecting filter residue and wastewater washed off by the backwash nozzle 2445. This allows the rinsing and suction operations to be carried out simultaneously, cleaning the filter screen impurities within the fine filter module 22 without disassembling the tank, thus removing trapped impurities adhering to the inner wall of the circular fine filter screen 23.

[0040] Please see Figures 9-12The suction module 245 includes a fine filter discharge pipe 2451, an inner suction pipe 2452, and a rotary joint 2453. The fine filter discharge pipe 2451 is fixedly connected to one end of the fine filter module 22 near the base frame 1. The rotary joint 2453 is located at the lower end of the fine filter module 22 and is connected to the fine filter discharge pipe 2451. The bottom end of the main shaft 241 is connected to the rotating end of the rotary joint 2453. The output end of the suction channel 243 is connected to the input end of the rotary joint 2453. The inner suction pipes 2452 are arranged in a ring at equal intervals and fixedly connected to the outer surface of the main shaft 241. The inner suction pipes 2452 are located inside the circular fine filter screen 23. Suction heads 2454 are fixedly connected at equal intervals to the outer side of the inner suction pipes 2452. The suction heads 2454 are located inside each backflushing nozzle 2445. The output end of the fine filter discharge pipe 2451 is connected to the inner side of the main shaft 2451. The sewage discharge pipeline mechanism 3 is connected to the input end of the sewage discharge pipeline mechanism 3. The sewage discharge pipeline mechanism 3 includes a sewage pump 31, which is fixedly connected to the base frame 1. The input end of the sewage pump 31 is fixedly connected to a suction tee 32, and the output end of the sewage pump 31 is fixedly installed with a sewage discharge tee 33. The two input ends of the suction tee 32 are respectively connected to the fine filter slag discharge pipe 2451 and the coarse filter slag discharge pipe 214. The inactivation mechanism 6 includes a liquid discharge main pipe 61, which is fixedly installed at the output end of the fine filter module 22. The output end of the liquid discharge main pipe 61 is connected to an inactivation unit 62 through a connecting flange. Several ultraviolet lamp components 63 are fixedly installed inside the inactivation unit 62. A cooling module 65 is provided on the outside of the inactivation unit 62. The outer ends of the ultraviolet lamp components 63 extend into the cooling module 65. A ballast water treatment drain pipe 64 is fixedly installed at the top output end of the inactivation unit 62.The cooling module 65 includes a cooling pump 651, a cooling core assembly 652, and a cooling input tee 653. The cooling input tee 653 is fixedly connected to the top of the drain main pipe 61, and its input end is connected to the inside of the drain main pipe 61. The cooling pump 651 is fixedly installed on one side of the drain main pipe 61, and a cooling output tee 655 is fixedly installed on its input end. The cooling core assembly 652 is fixedly installed on both sides of the inactivation unit 62. The two ends of the ultraviolet lamp assembly 63 extend into the cooling core assembly 652. A heat exchange coil 654 is fixedly connected inside the cooling core assembly 652, and its output end is connected to the input end of the cooling output tee 655. The input end of the heat exchange coil 654 is connected to the output end of the cooling input tee 653, and the output end of the cooling pump 651 is connected to the drain pipe 61. During the application of this device, by setting up the suction module 245, the sewage discharge pipeline mechanism 3, the inactivation mechanism 6, and the cooling module 65, the filter residue and sewage washed off by the backwash nozzle 2445 during use can be collected by the suction head 2454 inside the circular fine filter screen 23. The dirt flows into the suction channel 243 inside the main shaft 241 along the inner suction pipe 2452, and then is transported to the fine filter slag discharge pipe 2451 through the rotary joint 2453. The fine filter slag discharge pipe 2451 guides the dirt into the suction tee. 32. The sewage pump 31 receives sludge from the fine filter sludge discharge pipe 2451 and the coarse filter sludge discharge pipe 214 via the suction tee 32. The sludge is then discharged outward through the sewage tee 33. The rotary joint 2453 can adapt to the rotation of the main shaft 241, maintaining unobstructed passage between the suction channel 243 and the fine filter sludge discharge pipe 2451. After filtration, the ballast water flows into the drain pipe 61 and is then sent into the inactivation unit 62. The ultraviolet lamp assembly 63 inside the inactivation unit 62 inactivates the water. Part of the filtered ballast water is led out from the drain pipe 61 through the cooling input tee 653 and flows into the heat exchange coil 654. The heat exchange coil 654 is arranged in the cooling core assembly 6. Inside the cooling core assembly 652, heat exchange is completed for the ultraviolet lamp assembly 63 extending into the cooling core assembly 652. After heat exchange, the water is sent to the cooling pump 651 through the cooling output tee 655. The cooling pump 651 then sends the water back to the drain main pipe 61. This allows the cooling medium to circulate and participate in the subsequent inactivation process, eliminating the need for an additional independent cooling water source. It can simultaneously complete ballast water inactivation and heat dissipation of the ultraviolet lamp assembly 63. The entire system works together to uniformly remove the contaminants generated by coarse and fine filtration, and also allows the filtered water to circulate as a cooling medium, continuously maintaining the normal operation of the ballast water treatment process and improving the overall working efficiency and service life of the equipment.

[0041] The working principle of this invention is as follows: During the application of this device, when the ship's ballast water treatment system is in operation, ballast water will be continuously fed into the graded filtration structure composed of the coarse filter module 21 and the fine filter module 22. The ballast water first enters the coarse filter tank 211. The conical coarse filter screen 213 intercepts and blocks large particulate impurities and large suspended debris in the water, completing the primary purification of the water. The ballast water after preliminary filtration will be transported to the fine filter module 22 through the connecting flange. The ballast water entering the fine filter module 22 will directly flow into the internal cavity of the circular fine filter screen 23. The water will permeate and overflow from the inside to the outside of the circular fine filter screen 23, thus completing the fine filtration operation. The small impurities and suspended particles contained in the ballast water will be intercepted and attached to the inner filter wall of the circular fine filter screen 23. The clean water after filtration is continuously transported to the drain pipe 61 of the inactivation mechanism 6, thus completing the continuous operation of the entire ballast water filtration process.

[0042] When impurities accumulate on the inner wall of the system filter screen and backwashing is required, the high-pressure water pump 26 starts working. The high-pressure water output by the high-pressure water pump 26 is continuously sent into the backwash inlet pipe 2442 through the connecting pipe and the external flange. The high-pressure water flows into the inlet chamber 2441. When the main shaft 241 moves within the inlet chamber 2441, the backwash cleaning fluid inlet hole 2444 on the main shaft 241 can assist in guiding the backwash fluid. At this time, the backwash fluid can flow into the inlet channel 242 inside the main shaft 241 through the backwash cleaning fluid inlet hole 2444, and finally be delivered to the evenly arranged backwash side spray pipes 2443. The water flows out at high speed through the backwash nozzles 2445 on the surface of the backwash side spray pipes 2443. The high-pressure water flow is from the circular... The outer side of the circular fine filter screen 23 sprays water towards the inner filter wall, forming a reverse flushing flow that can directly wash away and remove various filter residues and impurities adhering to the inner wall of the circular fine filter screen 23. The transmission module 25 is the core structure for achieving all-round backwashing without dead angles. After the drive motor 252 is powered on, it will drive the transmission shaft 253 to rotate continuously through the gearbox. The bottom of the transmission shaft 253 has a regular hexagonal groove 247, and the top of the main shaft 241 is fixedly equipped with a hexagonal support rod 246. The hexagonal support rod 246 is slidably assembled inside the regular hexagonal groove 247. This mating structure can stably transmit rotational power while allowing vertical sliding. The external thread 254 on the outer wall of the transmission shaft 253 will form a threaded transmission engagement with the transmission nut 255.

[0043] The lower end of the power housing 251 is designed with a rectangular structure, and the outer surface of the transmission nut 255 is also a matching rectangular structure. This structure completely restricts the circumferential rotational freedom of the transmission nut 255, allowing it to only perform vertical linear motion and preventing it from rotating with the transmission shaft 253. Limit switches 256 are fixedly connected to both ends of one side of the power housing 251. The detection ends of the limit switches 256 extend into the limit sleeve. The two limit switches 256 are symmetrically distributed at the upper and lower ends of the vertical travel of the transmission nut 255. During equipment operation, the transmission nut 255 follows the threaded transmission structure... The vertical reciprocating motion is as follows: When the transmission nut 255 moves upward and touches the detection end of the top limit switch 256, the limit switch 256 senses the contact signal and transmits it to the controller inside the distribution box 4. After receiving the signal, the controller controls the drive motor 252 to change its rotation direction, causing the transmission nut 255 to change from an upward state to a downward state. When the transmission nut 255 moves downward and touches the detection end of the bottom limit switch 256, the bottom limit switch 256 also sends back a sensing signal. The controller then controls the drive motor 252 to switch its rotation direction again, thus realizing the autonomous reversing operation of the drive motor 252. In the controlled operation mode, when the drive motor 252 rotates forward, the threaded transmission structure drives the transmission nut 255 to move downward, thereby causing the main shaft 241 to move downward as a whole. When the drive motor 252 rotates in reverse, the threaded transmission structure drives the transmission nut 255 to move upward, thereby causing the main shaft 241 to move upward as a whole. During the vertical reciprocating movement of the main shaft 241 driven by the transmission nut 255, the hexagonal support rod 246 can slide freely inside the regular hexagonal groove 247 at the bottom of the transmission shaft 253. The vertical sliding motion does not interfere with the rotational power output of the transmission shaft 253, and the transmission shaft 253 can always pass through the regular hexagonal groove 247. The engaging structure with the hexagonal support rod 246 continuously drives the main shaft 241 to rotate, thereby achieving independent and synchronous rotational motion and vertical reciprocating oscillation motion of the main shaft 241. The two motions do not interfere with each other. During the reciprocating oscillation of the main shaft 241, it will synchronously drive the outer backwash nozzle 2445 and the inner suction head 2454 to rotate and lift synchronously, so that the high-pressure backwash water flow can sweep through the entire inner filter wall of the circular fine filter screen 23 layer by layer, completely covering the entire area of ​​the filter screen. This enables a thorough backwash cleaning operation of the circular fine filter screen 23 in a comprehensive and layered manner, without any local cleaning failures.

[0044] During the high-pressure backwashing operation, the system suction module 245 starts working simultaneously. The suction head 2454 is positioned inside the backwash nozzle 2445 and also inside the rotary joint 2453. After the high-pressure water flow washes against the inner wall of the filter screen from the outside to remove impurities, most of the suspended filter cake and wastewater are directly within the negative pressure coverage of the suction head 2454 and can be instantly adsorbed and collected. The collected wastewater is transported to the fine filter discharge pipe 2451 through the inner suction pipe 2452, the suction channel 243 of the main shaft 241, and the rotary joint 2453. A small portion of the filter cake and wastewater that falls and accumulates at the bottom of the fine filter module 22 due to gravity will gather in the connecting groove at the bottom of the fine filter module 22. The connecting groove is connected to the fine filter discharge pipe 2451, so that the wastewater deposited at the bottom can be simultaneously extracted and discharged by the fine filter discharge pipe 2451 and discharged through the upper suction head 2454. The combination of active adsorption and bottom connecting channel suction can quickly and thoroughly clean all impurities and dirt removed during backwashing. The entire backwashing operation does not require disassembly of any filter structure. After the operation is completed, the corresponding switch valves of the coarse filter slag discharge pipe 214 and fine filter slag discharge pipe 2451 can be opened according to the equipment operating conditions. The sewage pump 31 inside the sewage discharge pipeline mechanism 3, in conjunction with the suction tee 32, can independently connect to the coarse filter module 21 and the fine filter module to complete independent slag discharge operations, or simultaneously connect the two sets of structures to achieve synchronous slag discharge operations. The collected dirt will be switched through the sewage tee 33 and discharged to the internal storage area of ​​the ship or the external sea area as needed. During the entire operation of the equipment, the electrical control structure composed of the power distribution frame 5 and the power distribution box 4 can provide power and control support for the operation of the equipment. The controller can regulate various operating programs of the equipment, the display screen displays the equipment operating parameters in real time, and the control buttons can be used to manually switch equipment modes and start and stop operations.

[0045] After fine filtration, all the clean ballast water flows into the drain pipe 61. The drain pipe 61 divides the water into two streams. The main stream is directly delivered to the inactivation unit 62. Multiple sets of ultraviolet lamps 63 installed in the inactivation unit 62 can inactivate residual microorganisms, plankton, and harmful bacteria in the ballast water. The inactivated and qualified water is finally discharged through the treated ballast water drain pipe 64. A small portion of the clean ballast water is led out from the drain pipe 61 through the cooling input tee 653 and directly sent into the heat exchange coil 654 of the cooling module 65. The heat exchange coil 654 is arranged inside the cooling core assembly 652 and is attached to both ends of the ultraviolet lamp assembly 63, which can directly heat the continuously operating ultraviolet lamp assembly. The component 63 performs heat exchange and cooling. The entire cooling process does not require an external independent cooling water source or additional dedicated heat dissipation equipment. As long as the ballast water treatment process exists during equipment operation, cooling water can be continuously supplied, allowing the cooling operation to be carried out synchronously with the water treatment operation. The water that has completed heat exchange and heating can flow into the cooling pump 651 through the cooling output tee 655. The cooling pump 651 cools the water after heat exchange. The treated water flows back into the drain pipe 61 and enters the inactivation unit 62 again with the mainstream water to participate in the inactivation process, thus forming a closed-loop self-cooling circuit. This allows the UV lamp component 63 to continuously dissipate heat during long-term continuous operation and maintain a suitable operating temperature.

[0046] This technical solution utilizes a sliding transmission mechanism between the hexagonal groove 247 of the drive shaft 253 and the hexagonal support rod 246 of the main shaft 241. This allows for the separation of vertical displacement and rotational power transmission. While the drive nut 255 drives the main shaft 241 to move up and down, the drive shaft 253 can continuously and stably drive the main shaft 241 to rotate, ensuring that the main shaft 241 maintains a combined rotational and lifting motion. This enables the backwash nozzle 2445 and suction head 2454 to fully traverse the inner wall of the circular fine filter screen 23, completely eliminating the blind spots present in traditional fixed flushing structures. The added limit switch 256 in this technical solution can work with the controller to achieve autonomous reversing control of the drive motor 252, allowing the drive nut 255 and main shaft 241 to automatically complete reciprocating lifting and lowering movements without manual adjustment of the equipment's operating stroke. This allows for fully automated and continuous backwashing operations. This technical solution employs an external spray backwashing combined with an internal negative pressure suction counter-flushing structure, which can directly peel off and immediately adsorb stubborn impurities on the inner wall of the filter screen. Simultaneously, it is paired with the fine filter module 22 at the bottom... The combined drainage structure of the interconnected channels simultaneously cleans both suspended and deposited contaminants, effectively improving the integrity and speed of filter screen cleaning. This technical solution integrates coarse filtration sludge discharge and fine filtration backwashing sludge discharge into the same drainage pipeline mechanism 3. By switching valves, it can adapt to different sludge discharge requirements under different working conditions. The entire filter screen cleaning process is completed automatically by the equipment, eliminating the need for manual disassembly and cleaning, and ensuring the continuous unobstructed state of the filtration structure. This technical solution optimizes the heat dissipation method of the inactivation mechanism 6, abandoning the traditional structure design of independently configured heat dissipation systems. The cooling module 65 uses filtered ballast water as the circulating cooling medium. The continuous water flow generated during the ballast water treatment process can complete the heat exchange and heat dissipation of the ultraviolet lamp assembly 63. The cooling water is circulated back and then participates in the disinfection operation again, without wasting water resources. During continuous operation, the equipment can achieve long-term uninterrupted heat dissipation, avoiding the problem of heat accumulation in the ultraviolet lamp assembly 63 during long-term operation, allowing the inactivation operation to run stably and continuously for a long time.

Claims

1. A ship ballast water treatment system with a composite motion high-pressure backwashing function, characterized in that, Includes a base frame (1), a filter mechanism (2) is fixedly installed on one side of the top of the base frame (1), a sewage discharge pipe mechanism (3) is provided at the output end of the filter mechanism (2), and an inactivation mechanism (6) is fixedly installed on the other side of the top of the base frame (1), the output end of the inactivation mechanism (6) and the output end of the filter mechanism (2) are connected. The filtration mechanism (2) includes a coarse filter module (21), which is fixedly connected to the base frame (1) on the side away from the inactivation mechanism (6). A fine filter module (22) is fixedly installed on the top of the coarse filter module (21). A circular fine filter screen (23) is fixedly installed inside the fine filter module (22). A backwash discharge module (24) is movably installed inside the fine filter module (22). A transmission module (25) is provided on the top of the fine filter module (22). The bottom of the transmission module (25) is connected to the top of the backwash discharge module (24).

2. The ship ballast water treatment system with composite motion high-pressure backwashing function according to claim 1, characterized in that, A power distribution frame (5) is fixedly installed on one side of the base frame (1), and a power distribution box (4) is fixedly installed on the power distribution frame (5). A controller is provided inside the power distribution box (4), a display screen is provided on the upper outer side of the power distribution box (4), and several control buttons are provided on the lower outer side of the power distribution box (4).

3. A ship ballast water treatment system with a composite motion high-pressure backwashing function according to claim 1, characterized in that, The coarse filter module (21) includes a coarse filter tank (211). Both ends of the outer surface of the coarse filter tank (211) are fixedly installed with brackets (212). The bottom of the brackets (212) is connected to the base frame (1). A conical coarse filter screen (213) is fixedly installed inside the coarse filter tank (211). The end of the conical coarse filter screen (213) at the apex is provided with a coarse filter discharge pipe (214). The output end of the coarse filter discharge pipe (214) is connected to the sewage discharge pipeline mechanism (3). The fine filter module (22) is installed on the top of the coarse filter tank (211) through a connecting flange. The bottom of the fine filter module (22) is connected to the top of the coarse filter tank (211) through a connecting flange.

4. A ship ballast water treatment system with a composite motion high-pressure backwashing function according to claim 3, characterized in that, The transmission module (25) includes a power housing (251), which is screwed to the top of the fine filter module (22). The bottom of the power housing (251) is sealed with a sealing gasket to seal the gap between the fine filter module (22) and the power housing (251). A drive motor (252) is provided on the top of the power housing (251). A drive shaft (253) is rotatably connected to the upper end of the power housing (251). The outer surface of the drive shaft (253) is provided with an external thread (254). The drive motor (252) is connected to the gearbox. The drive shaft (253) rotates, and the lower end of the power housing (251) is slidably connected to the drive nut (255). The drive nut (255) is threaded onto the drive shaft (253) through the external thread (254). The bottom of the drive nut (255) is connected to the backflushing sewage module (24). Limit switches (256) are fixedly connected to both ends of one side of the power housing (251). The detection end of the limit switch (256) extends into the limit sleeve. The drive nut (255) is located between the inner sides of the two limit switches (256).

5. A ship ballast water treatment system with a composite motion high-pressure backwashing function according to claim 4, characterized in that, The backflushing and sewage discharge module (24) includes a main shaft (241), which is rotatably connected to the interior of the fine filter module (22). One end of the main shaft (241) has a liquid inlet channel (242), and the other end has a suction channel (243). The liquid inlet channel (242) and the suction channel (243) of the main shaft (241) are separated from each other by a partition and are not connected. The top end of the main shaft (241) extends into the power housing (251), and the end of the main shaft (241) away from the power housing (251) extends movably into the circular fine filter screen (23). A sealing ring is provided at the point where the circular fine filter screen (23) is penetrated by the main shaft (241). The outer surface is provided with an external spray module (244), which is movable outside the circular fine filter screen (23). The outer surface of the main shaft (241) is also provided with a suction module (245), which is movable inside the circular fine filter screen (23). The output end of the external spray module (244) is located outside the input end of the suction module (245). A hexagonal support rod (246) is fixedly installed at the top of the main shaft (241). The top of the main shaft (241) is rotatably connected to the bottom of the transmission nut (255). A regular hexagonal groove (247) is opened at the bottom of the transmission shaft (253). The end of the hexagonal support rod (246) extends and slides in the matching regular hexagonal groove (247).

6. A ship ballast water treatment system with a composite motion high-pressure backwashing function according to claim 5, characterized in that, The external spray module (244) includes a liquid inlet channel (2441), a backflush inlet pipe (2442), and a backflush side spray pipe (2443). The liquid inlet channel (2441) is located at the lower end of the power housing (251). The outer surface of the end of the main shaft (241) located in the liquid inlet channel (2441) has several backflush cleaning fluid inlet holes (2444). The backflush cleaning fluid inlet holes (2444) are connected to the liquid inlet channel (242). The backflush inlet pipe (2442) is fixedly connected to one side of the power housing (251). The backflush inlet pipe (2442) has... An external flange is provided at the outer end. The output end of the backflushing inlet pipe (2442) is connected to the inlet channel (242) inside the main shaft (241) through the inlet cavity (2441) and the backflushing cleaning fluid inlet hole (2444). The backflushing side nozzles (2443) are arranged in a ring at equal intervals and fixedly installed on the outer surface of the main shaft (241). The backflushing side nozzles (2443) are arranged in an L-shape. The backflushing nozzles (2445) are arranged linearly at equal intervals on the inner side of the backflushing side nozzles (2443). The backflushing nozzles (2445) are located outside the circular fine filter screen (23).

7. A ship ballast water treatment system with a composite motion high-pressure backwashing function according to claim 6, characterized in that, A high-pressure water pump (26) is fixedly connected to one side of the top of the base frame (1). The output end of the high-pressure water pump (26) is connected to the backflushing inlet pipe (2442) through a connecting pipe and an external flange.

8. A ship ballast water treatment system with a composite motion high-pressure backwashing function according to claim 6, characterized in that, The suction module (245) includes a fine filter discharge pipe (2451), an inner suction pipe (2452), and a rotary joint (2453). The fine filter discharge pipe (2451) is fixedly connected to one end of the fine filter module (22) near the base frame (1). The rotary joint (2453) is located at the lower end of the fine filter module (22) and is connected to the fine filter discharge pipe (2451). The bottom end of the main shaft (241) is connected to the rotating end of the rotary joint (2453). The suction channel (243) The output end of the rotary joint (2453) is connected to the input end of the rotary joint (2453). The inner suction pipe (2452) is arranged in a ring at equal intervals and fixedly connected to the outer surface of the main shaft (241). The inner suction pipe (2452) is located inside the circular fine filter screen (23). The suction head (2454) is fixedly connected at equal intervals on the outer side of the inner suction pipe (2452). The suction head (2454) is located inside each backflushing nozzle (2445). The output end of the fine filter slag discharge pipe (2451) is connected to the input end of the sewage discharge pipeline mechanism (3).

9. A ship ballast water treatment system with a composite motion high-pressure backwashing function according to claim 8, characterized in that, The sewage pipeline mechanism (3) includes a sewage pump (31), which is fixedly connected to the base frame (1). The input end of the sewage pump (31) is fixedly connected to a suction tee (32), and the output end of the sewage pump (31) is fixedly installed with a sewage discharge tee (33). The two input ends of the suction tee (32) are respectively connected to the fine filter slag discharge pipe (2451) and the coarse filter slag discharge pipe (214).

10. A ship ballast water treatment system with a composite motion high-pressure backwashing function according to claim 1, characterized in that, The inactivation mechanism (6) includes a drain pipe (61), which is fixedly installed at the output end of the fine filtration module (22). An inactivation unit (62) is installed at the output end of the drain pipe (61) through a connecting flange. Several ultraviolet lamp assemblies (63) are fixedly installed inside the inactivation unit (62). A cooling module (65) is provided on the outside of the inactivation unit (62). The outer ends of the ultraviolet lamp assemblies (63) extend into the cooling module (65). A ballast water treatment drain pipe (64) is fixedly installed at the top output end of the inactivation unit (62). The cooling module (65) includes a cooling pump (651), a cooling core assembly (652), and a cooling input tee (653). The cooling input tee (653) is fixedly connected to the top of the drain pipe (61), and the input end of the cooling input tee (653) is connected to the drain pipe (61). The cooling pump (651) is fixedly installed on one side of the drain pipe (61), and a cooling output tee (655) is fixedly installed on the input end of the cooling pump (651). The cooling core assembly (652)... The UV lamp assembly (63) is fixedly installed on both sides of the inactivation unit (62). Both ends of the UV lamp assembly (63) extend into the cooling core assembly (652). The cooling core assembly (652) is fixedly connected to a heat exchange coil (654). The output end of the heat exchange coil (654) is connected to the input end of the cooling output tee (655). The input end of the heat exchange coil (654) is connected to the output end of the cooling input tee (653). The output end of the cooling pump (651) is connected to the drain pipe (61).

Images