A device and method for deep treatment of ship ballast water

Abstract

The present invention relates to the technical field of ship ballast water treatment, and specifically discloses a ship ballast water deep treatment device and a treatment method. The device includes a base, and support legs are fixedly installed at the four corners of the top of the base. A treatment tank body is fixedly installed at the top of the support legs. The present invention constructs a complete and efficient ballast water treatment process from filtration to disinfection and then to deep purification. The filtration mechanism effectively intercepts large particle impurities, reducing the burden for subsequent treatment; the stirring mechanism realizes the full mixing of the disinfectant and the ballast water, improving the disinfection effect; finally, the treated ballast water flows into the purifier and is purified layer by layer through an activated carbon filter element, an ultrafiltration membrane filter element, a nanofiltration membrane filter element, and a reverse osmosis membrane filter element, further removing tiny impurities, bacteria, viruses, and various pollutants in the water. The entire process improves the treatment quality of the ballast water.

Description

Technical Field

[0001] The present invention relates to the technical field of ship ballast water treatment, in particular to a ship ballast water deep treatment device and a treatment method. Background Art

[0002] Ship ballast water is water injected into the ballast tank of a ship to ensure safe navigation, stable operation and reasonable draft of the ship. This water usually comes from the sea area where the ship is located. The weight distribution and stability of the ship will change at different stages of navigation, such as when the ship is empty or when the cargo volume changes. By adjusting the amount and distribution of ballast water, the weight of the ship can be effectively balanced to ensure that the ship has good stability and maneuverability during navigation, and avoid the risk of the ship tilting or even capsizing due to the shift of the center of gravity. However, the transfer of ship ballast water between different sea areas may lead to the invasion of marine organisms and cause serious damage to the local marine ecosystem. Therefore, the effective management and treatment of ship ballast water is particularly important;

[0003] In the context of the booming shipping industry today, ships will inevitably discharge ballast water from the bottom of the ship into the marine environment during routine operations such as cargo loading and unloading and drainage. However, this ballast water is not clean water, but rich in sediments, bacteria and other pollutants, which pose a serious threat to the marine ecosystem, greatly destroy the ecological balance of the ocean, and cause many environmental problems. Therefore, it is urgent to effectively treat ship ballast water to achieve environmental protection goals;

[0004] The existing technology for the treatment of ship ballast water is mainly concentrated in the field of filtration and purification. Usually, the ballast water is firstly filtered with a filter, and then disinfectant is added and stirred and disinfected with the help of a stirring device. However, this treatment method has significant defects. On the one hand, in the filtration process, impurities intercepted by the filter are very easy to adhere to the outer surface of the filter. With the continuous accumulation of impurities, the filter is frequently blocked, resulting in the need to frequently clean the filter, which seriously affects the ballast water treatment efficiency and increases the operating cost and time cost. On the other hand, the stirring structure design is too simple, mostly a single stirring frame stirring clockwise, which is very easy to produce vortex phenomenon during the stirring process, making it impossible for the ballast water to achieve uniform up and down rolling, which in turn causes the disinfectant to be unable to fully contact and play a role in the ballast water, greatly reducing the disinfection effect and limiting the overall treatment capacity. In summary, in order to improve the treatment effect of ship ballast water, it is urgent to carry out innovative improvement and design of existing treatment technologies and equipment. Summary of the invention

[0005] The object of the present invention is to provide a ship ballast water deep treatment device and treatment method to solve the problem that the existing technology cannot treat ballast water more efficiently during application as mentioned in the above background technology.

[0006] To achieve the above object, the present invention provides a device for deep treatment of ship ballast water, including a base. At the four corners of the top of the base, support legs are fixedly installed. At the top of the support legs, a treatment tank body is fixedly installed. At the top of the treatment tank body, a filtering mechanism is installed by bolts. At the bottom of the filtering mechanism, a stirring mechanism is movably installed. The stirring mechanism is rotatably connected to the inside of the treatment tank body. At the upper end of the treatment tank body, outside the filtering mechanism, a driving mechanism is fixedly installed. The output end of the driving mechanism is in transmission connection with the top of the filtering mechanism. At the bottom of the treatment tank body, a drain valve is fixedly installed. The output end of the drain valve is fixedly installed with a purifier;

[0007] The filtering mechanism includes a conical filter screen, which is installed on the top of the treatment tank body by bolts. A collection assembly is arranged outside the conical filter screen. The stirring mechanism is installed at the bottom of the conical filter screen. The outer surface of the conical filter screen is rotatably connected with a cleaning assembly. The bottom of the cleaning assembly penetrates through the conical filter screen and is connected to the top of the stirring mechanism.

[0008] Further, the driving mechanism includes a support frame, which is fixedly installed at the rear side of the upper end of the treatment tank body. At the top of the support frame, a top plate is fixedly installed. At the top of the top plate, a driving motor is fixedly installed. The output end of the driving motor penetrates through the top plate and is fixedly installed with a first gear. The first gear is meshed with the cleaning assembly.

[0009] Further, a connecting arm is fixedly installed inside the support frame. At the end of the connecting arm, an annular pipe is fixedly installed. At the bottom of the annular pipe, drain pipes are fixedly installed at equal intervals. A water adding pipe is fixedly installed outside the annular pipe. At the top of the water adding pipe, a water adding hopper is fixedly installed.

[0010] Further, activated carbon filter cores, ultrafiltration membrane filter cores, nanofiltration membrane filter cores and reverse osmosis membrane filter cores are sequentially installed at equal intervals and linearly arranged inside the purifier. The inside of the activated carbon filter core is composed of activated carbon adsorption plates. The inside of the ultrafiltration membrane filter core is composed of a polyvinylidene fluoride filter layer material. The inside of the nanofiltration membrane filter core is composed of a sulfonated polyethersulfone filter layer material. The inside of the reverse osmosis membrane filter core is composed of an aromatic polyamide filter layer material. The outside of the purifier is fixedly connected with a discharge pipe. At the outer end of the discharge pipe, a connecting flange is fixedly installed.

[0011] Further, the cleaning component includes a rotating shaft rotatably connected to the middle of the conical filter screen. The upper end of the outer surface of the rotating shaft is fixedly connected with cleaning arms at equal intervals. The inner side of the cleaning arm is fixedly installed with a cleaning brush plate, and the inner side of the cleaning brush plate is in fit connection with the outer surface of the conical filter screen. The top of the rotating shaft is fixedly installed with a second gear, which is meshed with the first gear, and the bottom of the rotating shaft is connected to the top of the stirring mechanism.

[0012] Further, the stirring mechanism includes fixed columns annularly arranged at equal intervals and fixedly installed at the bottom of the conical filter screen. The bottom of the fixed column is fixedly installed with an annular frame. A transmission component is arranged at the bottom of the annular frame, and a stirring component is installed at the bottom of the transmission component. The stirring component is movably installed inside the processing tank body.

[0013] Further, the transmission component includes a cross and an internal gear ring. The cross is fixedly installed at the bottom of the rotating shaft, and the internal gear ring is fixedly installed at the bottom of the annular frame. The outer ends of the bottom of the cross are rotatably connected with external gears annularly arranged at equal intervals, and the inner sides of the bottom of the cross located inside the external gears are rotatably connected with internal gears annularly arranged at equal intervals. The internal gear is meshed with the external gear, and the stirring component is arranged at the bottom of the cross.

[0014] Further, the stirring component includes an auger and a stirring frame. The auger is fixedly installed at the bottom of the cross, and the stirring frames are fixedly installed at the bottoms of the respective internal gears. The inner sides of the stirring frames are fixedly installed with stirring plates linearly arranged at equal intervals. The lower ends of the auger and the lower end of the processing tank body are both conically arranged.

[0015] Further, the collection component includes an annular guiding hopper and a scraping frame. The cross-sectional shape of the annular guiding hopper is V-shaped. One side of the bottom of the annular guiding hopper is fixedly installed with a discharge pipe, and the outer end of the discharge pipe is fixedly installed with a collection box. The top of the discharge pipe is communicated with the inside of the annular guiding hopper. A collection drawer is slidably connected to the lower end inside the collection box. Both ends of the outer side of the collection drawer are fixedly connected with magnetic plates, and the magnetic plates are magnetically connected with the collection box. The scraping frame is fixedly installed at the outer end of the cleaning arm, and the bottom of the scraping frame is in fit connection with the top of the annular guiding hopper.

[0016] A method for deep treatment of ship ballast water includes the following steps:

[0017] S1: The ballast water is preliminarily filtered by a sand filter to remove larger impurities.

[0018] S2: The preliminarily filtered ballast water is injected into the water adding hopper, guided by the water adding hopper into the annular pipe, and then conveyed to the center of the top of the conical filter screen through the drain pipe.

[0019] S3: Start the drive motor. The motor drives the first gear to rotate, driving the second gear to operate, prompting the rotating shaft to rotate, driving the cleaning arm to rotate, the cleaning brush plate to clean the conical filter screen, the scraping frame to clean the annular guiding hopper, and the impurities to fall into the collection drawer in the collection box;

[0020] S4: The drive motor operates, driving the rotating shaft to rotate. The cross on the bottom of the rotating shaft rotates accordingly, driving the auger to agitate the ballast water in the middle of the treatment tank. At the same time, it drives the outer gear and the inner gear to move in a circular motion around the rotating shaft, causing the stirring frame and the stirring plate to rotate;

[0021] S5: Add the disinfectant into the treatment tank body, and the stirring mechanism makes the disinfectant mix with the ballast water quickly and evenly;

[0022] S6: After the disinfection treatment of the ballast water is completed, open the drain valve at the bottom of the treatment tank. The treated ballast water flows into the purifier and is purified layer by layer through the activated carbon filter element, ultrafiltration membrane filter element, nanofiltration membrane filter element and reverse osmosis membrane filter element.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] First, in the present invention, by setting the filtering mechanism, during use, the ballast water enters the conical filter screen through the water filling hopper, annular pipe and drain pipe. While the filter screen filters impurities, the cleaning design can, during use, drive the gears to rotate by starting the drive motor, and then drive the rotating shaft and the cleaning arm, so that the cleaning brush plate continuously brushes and cleans the conical filter screen to prevent impurities from accumulating and blocking the filter screen. The cleaning arm also drives the scraping frame to clean the annular guiding hopper, guiding the filtered large-particle impurities for collection. The impurities fall into the collection drawer through the discharge pipe, which is convenient for centralized treatment. This process avoids frequent disassembly and installation of the filter screen, ensures the long-term stable operation of the filtering treatment of the ballast water, effectively improves the work efficiency, reduces the maintenance cost, and guarantees the high efficiency and convenience of the ship ballast water filtering link;

[0025] Second, in the present invention, by setting the stirring mechanism, during use, the cross at the bottom of the rotating shaft can be driven to rotate by the drive motor, driving the auger to initially agitate the ballast water in the middle of the treatment tank. At the same time, the cross drives the outer gear and the inner gear to move in a circular motion around the rotating shaft. The outer gear meshes with the internal gear ring, causing the outer gear and the inner gear to rotate by themselves during displacement, and then driving the stirring frame and the stirring plate at the bottom to rotate. This unique stirring method allows the stirring frame and the stirring plate to perform secondary mixing of the ballast water around the auger. When the disinfectant is added to the treatment tank body, it can quickly and evenly blend with the ballast water, greatly improving the disinfection efficiency, avoiding the situation of uneven disinfection, and ensuring the reliability and stability of the ballast water disinfection effect;

[0026] Thirdly, in the present invention, a complete and efficient ballast water treatment process is constructed from filtration to disinfection and then to deep purification. The filtration mechanism effectively intercepts large particulate impurities, reducing the burden for subsequent treatment; the stirring mechanism realizes the full mixing of the disinfectant and the ballast water, enhancing the disinfection effect; finally, the treated ballast water flows into the purifier and is purified layer by layer through an activated carbon filter element, an ultrafiltration membrane filter element, a nanofiltration membrane filter element, and a reverse osmosis membrane filter element, further removing tiny impurities, bacteria, viruses, and various pollutants in the water. The entire process not only improves the treatment quality of the ballast water to meet the environmental protection discharge standards but also reduces the potential harm to the marine ecological environment, providing reliable technical support for the green treatment of ship ballast water. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0029] Figure 3 is a schematic bottom view structure diagram of the present invention;

[0030] Figure 4 is a schematic diagram of the structure of the filtration mechanism of the present invention;

[0031] Figure 5 is a schematic bottom view structure diagram of the stirring mechanism of the present invention;

[0032] Figure 6 is a schematic front view structure diagram of the stirring mechanism of the present invention;

[0033] Figure 7 is a schematic diagram of the structure of the collection component in the open state of the present invention;

[0034] Figure 8 in the present invention Figure 1 is an enlarged schematic diagram of part A;

[0035] Figure 9 is a schematic diagram of the internal structure of the purifier of the present invention.

[0036] In the figure: 1, base; 2, support leg; 3, processing tank body; 4, drain valve; 5, filtering mechanism; 51, conical filter screen; 52, collection assembly; 521, annular guiding hopper; 522, discharge pipe; 523, collection box; 524, collection drawer; 525, magnetic plate; 53, cleaning assembly; 531, rotating shaft; 532, cleaning arm; 533, cleaning brush plate; 534, second gear; 535, scraping frame; 6, stirring mechanism; 61, fixed column; 62, annular frame; 63, transmission assembly; 631, cross; 632, internal gear ring; 633, external gear; 634, internal gear; 64, stirring assembly; 641, auger; 642, stirring frame; 643, stirring plate; 7, driving mechanism; 71, support frame; 72, top plate; 73, driving motor; 74, first gear; 75, connecting arm; 76, annular pipe; 77, drain pipe; 78, water adding pipe; 79, water adding hopper; 8, purifier; 9, activated carbon filter element; 10, ultrafiltration membrane filter element; 11, nanofiltration membrane filter element; 12, reverse osmosis membrane filter element; 13, discharge pipe. Specific embodiments

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] Please refer to Figures 1 - 9 In an embodiment of the present invention, a ship ballast water deep treatment device includes a base 1. Support legs 2 are fixedly installed at the four corners of the top of the base 1. A processing tank body 3 is fixedly installed at the top of the support legs 2. A filtering mechanism 5 is installed on the top of the processing tank body 3 through bolts. A stirring mechanism 6 is movably installed at the bottom of the filtering mechanism 5. The stirring mechanism 6 is rotatably connected to the inside of the processing tank body 3. A driving mechanism 7 is fixedly installed outside the filtering mechanism 5 at the upper end of the processing tank body 3. The output end of the driving mechanism 7 is in transmission connection with the top of the filtering mechanism 5. A drain valve 4 is fixedly installed at the bottom of the processing tank body 3. The output end of the drain valve 4 is fixedly installed with a purifier 8;

[0039] The filtering mechanism 5 includes a conical filter screen 51. The conical filter screen 51 is installed at the top of the treatment tank body 3 by bolts. A collection assembly 52 is arranged on the outer side of the conical filter screen 51. The stirring mechanism 6 is installed at the bottom of the conical filter screen 51. The outer surface of the conical filter screen 51 is rotatably connected with a cleaning assembly 53. The bottom of the cleaning assembly 53 penetrates through the conical filter screen 51 and is connected to the top of the stirring mechanism 6. In the filtering mechanism 5, the conical filter screen 51 effectively intercepts large-particle impurities. The collection assembly 52 on its outer side facilitates the centralized collection of impurities. The cleaning assembly 53 can clean the conical filter screen 51 in real time to prevent blockage and ensure efficient and continuous filtering. The stirring mechanism 6 closely cooperates with the filtering mechanism 5. Driven by the driving mechanism 7, it can stir the ballast water in all directions and at multiple levels, enabling the disinfectant to be fully mixed with the ballast water, greatly improving the disinfection effect. The drain valve 4 at the bottom of the treatment tank body 3 facilitates the discharge of the treated ballast water. The connected purifier 8 further deeply purifies it to remove pollutants such as tiny impurities, bacteria, and viruses. The overall device has a compact structure and complete functions. From filtering, disinfection to deep purification, each part works together effectively to improve the treatment quality of the ballast water and reduce the pollution risk to the marine environment.

[0040] Please refer to Figures 1 - 7 , the driving mechanism 7 includes a support frame 71. The support frame 71 is fixedly installed at the upper rear side of the treatment tank body 3. A top plate 72 is fixedly installed at the top of the support frame 71. A driving motor 73 is fixedly installed at the top of the top plate 72. The output end of the driving motor 73 penetrates through the top plate 72 and is fixedly installed with a first gear 74. The first gear 74 is meshed and connected with the cleaning assembly 53. A connecting arm 75 is fixedly installed inside the support frame 71. A ring-shaped pipe 76 is fixedly installed at the end of the connecting arm 75. Drain pipes 77 are fixedly installed at equal intervals at the bottom of the ring-shaped pipe 76. A water adding pipe 78 is fixedly installed on the outer side of the ring-shaped pipe 76. A water adding hopper 79 is fixedly installed at the top of the water adding pipe 78. The support frame 71 is stably installed at the upper rear side of the treatment tank body 3. The top plate 72 at its top provides reliable support for the driving motor 73, ensuring the stability of the motor during operation and thus guaranteeing the stability of the entire power transmission. The first gear 74 connected to the output end of the driving motor 73 is meshed with the cleaning assembly 53, which can accurately transmit power. By driving the cleaning assembly 53 through the operation of the motor, the conical filter screen 51 can be efficiently cleaned to maintain the efficient operation of the filtering mechanism 5. At the same time, the connecting arm 75 inside the support frame 71 fixes the ring-shaped pipe 76, which not only ensures the stable position of the ring-shaped pipe 76 but also provides a reliable path for water flow guidance. The drain pipes 77 at equal intervals at the bottom of the ring-shaped pipe 76 can make the ballast water flow evenly to the conical filter screen 51, improving the filtering effect. The setting of the water adding pipe 78 and the water adding hopper 79 facilitates the injection of the ballast water, laying a foundation for the smooth progress of subsequent treatment from the water inlet link. Each component cooperates with each other, improving the working efficiency and stability of the entire device.

[0041] Please refer toFigures 1 - 3 and Figure 9 Inside the purifier 8, an activated carbon filter element 9, an ultrafiltration membrane filter element 10, a nanofiltration membrane filter element 11, and a reverse osmosis membrane filter element 12 are linearly arranged at equal intervals and installed in sequence. The inside of the activated carbon filter element 9 is composed of activated carbon adsorption plates. The inside of the ultrafiltration membrane filter element 10 is composed of a polyvinylidene fluoride filter layer material. The inside of the nanofiltration membrane filter element 11 is composed of a sulfonated polyethersulfone filter layer material. The inside of the reverse osmosis membrane filter element 12 is composed of an aromatic polyamide filter layer material. A discharge pipe 13 is fixedly connected to the outside of the purifier 8, and a connecting flange is fixedly installed at the outer end of the discharge pipe 13. The first gear 74 connected to the output end of the drive motor 73 meshes with the cleaning assembly 53, which can accurately transmit power. By driving the cleaning assembly 53 through the operation of the motor, the conical filter screen 51 can be efficiently cleaned, maintaining the efficient operation of the filtering mechanism 5. At the same time, the connecting arm 75 inside the support frame 71 fixes the annular pipe 76, which not only ensures the stable position of the annular pipe 76 but also provides a reliable path for water flow guidance. The drain pipes 77 at equal intervals at the bottom of the annular pipe 76 can make the ballast water flow evenly to the conical filter screen 51, improving the filtering effect. The water adding pipe 78 and the water adding hopper 79 are provided, which facilitates the injection of ballast water. At the same time, the annularly arranged drain pipes 77 can discharge the ballast water concentratedly to the middle of the top of the conical filter screen 51, enabling it to withstand a wider filtering area.

[0042] Please refer to Figures 4 - 8 As shown in, the cleaning assembly 53 includes a rotating shaft 531, which is rotatably connected to the middle of the conical filter screen 51. At the upper end of the outer surface of the rotating shaft 531, cleaning arms 532 are fixedly connected at equal intervals. A cleaning brush plate 533 is fixedly installed on the inner side of the cleaning arm 532, and the inner side of the cleaning brush plate 533 is in fitting connection with the outer surface of the conical filter screen 51. A second gear 534 is fixedly installed at the top of the rotating shaft 531, and the second gear 534 is meshed and connected with the first gear 74. The bottom of the rotating shaft 531 is connected to the top of the stirring mechanism 6. The cleaning arms 532 fixedly arranged at equal intervals on the outer surface of the rotating shaft 531, together with the cleaning brush plate 533 on the inner side, can fully fit the outer surface of the conical filter screen 51. As the rotating shaft 531 rotates, the cleaning brush plate 533 efficiently brushes off the impurities attached to the filter screen, effectively preventing the filter screen from being blocked and ensuring the continuity and efficiency of filtration. The second gear 534 meshes with the first gear 74 of the driving mechanism 7, accurately receiving the power of the drive motor 73 and providing stable and strong operating power for the cleaning assembly 53. The bottom of the rotating shaft 531 is connected to the stirring mechanism 6, realizing the linkage between the filtering and stirring links, not only improving the treatment efficiency of the ballast water but also optimizing the operating coordination of the overall device, making the process from filtering impurities to stirring and disinfection more smooth.

[0043] Please refer to Figures 4 - 6, the stirring mechanism 6 includes fixed columns 61 which are fixedly installed at the bottom of the conical filter screen 51 in an equidistant annular arrangement. A ring-shaped frame 62 is fixedly installed at the bottom of the fixed column 61. A transmission assembly 63 is provided at the bottom of the ring-shaped frame 62. A stirring assembly 64 is installed at the bottom of the transmission assembly 63. The stirring assembly 64 is movably installed inside the treatment tank body 3. The transmission assembly 63 includes a cross 631 and an internal gear ring 632. The cross 631 is fixedly installed at the bottom of the rotating shaft 531. The internal gear ring 632 is fixedly installed at the bottom of the ring-shaped frame 62. Outer gears 633 are rotatably connected to the outer ends of the bottom of the cross 631 in an equidistant annular arrangement. Inner gears 634 are rotatably connected to the inner sides of the bottom of the cross 631 in an equidistant annular arrangement inside the outer gears 633. The inner gears 634 and the outer gears 633 are meshed and connected. The stirring assembly 64 is arranged at the bottom of the cross 631. The stirring assembly 64 includes an auger 641 and a stirring frame 642. The auger 641 is fixedly installed at the bottom of the cross 631. The stirring frames 642 are fixedly installed at the bottoms of the respective inner gears 634. Stirring plates 643 are fixedly installed in an equidistant linear arrangement on the inner sides of the stirring frames 642. The lower ends of the auger 641 and the treatment tank body 3 are both conically arranged. In the transmission assembly 63, the cross 631 is connected to the bottom of the rotating shaft 531, and can effectively transmit the power from the rotating shaft 531. The internal gear ring 632 cooperates with the outer gears 633 and the inner gears 634. When the cross 631 rotates, the outer gears 633 are driven by the internal gear ring 632 to drive the meshed inner gears 634 to rotate synchronously, realizing multi-angle and multi-directional power transmission. The auger 641 in the stirring assembly 64 is located at the bottom of the cross 631, and can initially agitate the ballast water in the middle of the treatment tank to form a water flow basis. The stirring frames 642 fixed to the bottoms of the respective inner gears 634, and the stirring plates 643 on their inner sides, during the rotation of the inner gears 634, perform secondary stirring on the water flow agitated by the auger 641. Since the stirring directions and ranges of the auger 641 and the stirring plates 643 of the stirring frames 642 are different, the ballast water and the disinfectant can be mixed comprehensively and more fully, ensuring the high efficiency and uniformity of the disinfection treatment, and greatly improving the treatment quality of the ballast water.

[0044] Please refer to Figures 1 - 5 and Figure 7, the collection component 52 includes an annular guiding hopper 521 and a scraping frame 535. The cross-sectional shape of the annular guiding hopper 521 is set in a V shape. One side of the bottom of the annular guiding hopper 521 is fixedly installed with a discharge pipe 522. The outer end of the discharge pipe 522 is fixedly installed with a collection box 523. The top of the discharge pipe 522 is communicated with the inside of the annular guiding hopper 521. A collection drawer 524 is slidably connected to the lower end inside the collection box 523. Both outer ends of the collection drawer 524 are fixedly connected with magnetic plates 525. The magnetic plates 525 are magnetically connected to the collection box 523. The scraping frame 535 is fixedly installed at the outer end of the cleaning arm 532. The bottom of the scraping frame 535 is in fit connection with the top of the annular guiding hopper 521. The annular guiding hopper 521 has a V-shaped cross-section design, which can effectively guide the large-particle impurities filtered out by the conical filter screen 51, making them slide down along the V-shaped slope to the bottom. This design is conducive to the centralized convergence of impurities. The discharge pipe 522 on one side of the bottom smoothly guides the impurities in the annular guiding hopper 521 to the collection box 523, ensuring the high efficiency of impurity transfer. The collection drawer 524 in the collection box 523 is magnetically connected to the collection box 523 through the magnetic plates 525, which not only ensures the stability of the drawer in the collection box 523 but also facilitates disassembly and cleaning. Just gently pull out the collection drawer 524 to easily handle the collected impurities. The scraping frame 535 is fixed at the outer end of the cleaning arm 532, and its bottom is in fit with the top of the annular guiding hopper 521. When the cleaning arm 532 rotates, the scraping frame 535 can timely scrape off the impurities attached to the top of the annular guiding hopper 521, making them fall into the discharge pipe 522, further ensuring the integrity of impurity collection, avoiding impurity accumulation, ensuring the smooth operation of the entire filtration and collection process, and improving the reliability and convenience of the device for treating ballast water impurities.

[0045] A method for deep treatment of ship ballast water includes the following steps:

[0046] S1: Use a sand filter to preliminarily filter the ballast water to filter out larger impurities;

[0047] S2: Inject the preliminarily filtered ballast water into the water adding hopper 79, guide it through the water adding hopper 79 into the annular pipe 76, and then transport it to the center of the top of the conical filter screen 51 through the drain pipe 77;

[0048] S3: Start the driving motor 73. The motor drives the first gear 74 to rotate, drives the second gear 534 to operate, promotes the rotation of the rotating shaft 531, drives the cleaning arm 532 to rotate, the cleaning brush plate 533 cleans the conical filter screen 51, the scraping frame 535 cleans the annular guiding hopper 521, and the impurities fall into the collection drawer 524 in the collection box 523;

[0049] S4: Operate the drive motor 73 to drive the rotation of the rotating shaft 531. The cross 631 at the bottom of the rotating shaft 531 rotates accordingly, driving the auger 641 to agitate the ballast water in the middle of the treatment tank. At the same time, it drives the outer gear 633 and the inner gear 634 to move in a circular motion around the rotating shaft 531, causing the stirring frame 642 and the stirring plate 643 to rotate;

[0050] S5: Add the disinfectant into the treatment tank body 3, and the stirring mechanism 6 enables the disinfectant to be quickly and evenly mixed with the ballast water;

[0051] S6: After the disinfection treatment of the ballast water is completed, open the drain valve 4 at the bottom of the treatment tank. The treated ballast water flows into the purifier 8 and is purified layer by layer through the activated carbon filter element 9, the ultrafiltration membrane filter element 10, the nanofiltration membrane filter element 11, and the reverse osmosis membrane filter element 12.

[0052] The working principle of the present invention is as follows: In the present invention, the setting of the filtering mechanism 5 greatly improves the efficiency and continuity of ballast water treatment. When the device operates, a sand filter can be used to initially filter the water liquid to remove larger impurities therein. Then, the ballast water is injected into the water adding hopper 79, guided by the water adding hopper 79 and flows into the annular pipe 76, and then is transported to the center of the top of the conical filter screen 51 through the drain pipe 77. The conical filter screen 51 conducts primary filtration on the ballast water, and impurities adhere to its outer surface. At this time, the driving motor 73 is started, the motor drives the first gear 74 to rotate, and further drives the second gear 534 to operate. The rotation of the second gear 534 causes the rotating shaft 531 to rotate, driving the cleaning arm 532 to rotate together. The cleaning brush plate 533 on the cleaning arm 532 is in close contact with the outer surface of the conical filter screen 51. As the cleaning arm 532 rotates, the cleaning brush plate 533 continuously brushes the conical filter screen 51, effectively removing the attached impurities. At the same time, the cleaning arm 532 drives the scraping frame 535 to scrape the inside of the annular guiding hopper 521. Under the combined action of the brushing of the cleaning brush plate 533 and the filtration of the conical filter screen 51, the filtered large particle impurities are guided and discharged into the annular guiding hopper 521, and then pushed into the discharge pipe 522 by the scraping frame 535, and finally fall into the collection drawer 524 in the collection box 523. This design enables the conical filter screen 51 to continuously remain unobstructed, avoiding the problem of blockage, and there is no need to frequently disassemble and clean the filter screen, ensuring that the device can stably treat ballast water for a long time. After the treatment is completed, simply pull out the collection drawer 524 to remove the particulate matter collected inside, facilitating the use of this device; in addition, the stirring mechanism 6 of the present invention further optimizes the disinfection treatment process of ballast water. When the driving motor 73 operates, it drives the rotating shaft 531 to rotate, and the cross 631 at the bottom of the rotating shaft 531 rotates accordingly. The rotation of the cross 631 not only drives the auger 641 at the bottom to stir the ballast water in the middle of the treatment tank, but also drives the outer gear 633 and the inner gear 634 to make a circular motion around the rotating shaft 531. During the movement, the outer gear 633 meshes with the stationary inner gear ring 632 and is driven by the inner gear ring 632 to rotate, thereby driving the inner gear 634 to rotate synchronously. The rotation of the inner gear 634 drives the stirring frame 642 at its bottom and the stirring plate 643 inside the stirring frame 642 to rotate together. At this time, the auger 641 rotates and stirs the ballast water in the middle of the treatment tank, and the stirring frame 642 and the stirring plate 643 rotate around the auger 641 and conduct secondary stirring and mixing on the ballast water stirred by it. When the disinfectant is added to the treatment tank body 3, this efficient stirring method can enable the disinfectant to be quickly and evenly mixed with the ballast water, greatly improving the disinfection efficiency of the ballast water, and at the same time avoiding the problem of uneven treatment, significantly enhancing the overall treatment effect. After the disinfection treatment of the ballast water is completed, the drain valve 4 at the bottom of the treatment tank is opened, and the treated ballast water flows into the purifier 8, and is further purified layer by layer through the activated carbon filter element 9, the ultrafiltration membrane filter element 10, the nanofiltration membrane filter element 11 and the reverse osmosis membrane filter element 12, further improving the treatment quality of the ballast water.

Claims

1. A deep treatment device for ship ballast water, characterized in that, It includes a base (1), support legs (2) are fixedly installed at the four corners of the top of the base (1), a processing tank body (3) is fixedly installed at the top of the support legs (2), a filtering mechanism (5) is installed at the top of the processing tank body (3) through bolts, a stirring mechanism (6) is movably installed at the bottom of the filtering mechanism (5), the stirring mechanism (6) is rotationally connected to the inside of the processing tank body (3), a driving mechanism (7) is fixedly installed outside the filtering mechanism (5) at the upper end of the processing tank body (3), the output end of the driving mechanism (7) is in transmission connection with the top of the filtering mechanism (5), a drain valve (4) is fixedly installed at the bottom of the processing tank body (3), and a purifier (8) is fixedly installed at the output end of the drain valve (4); The filtering mechanism (5) includes a conical filter screen (51), the conical filter screen (51) is installed at the top of the processing tank body (3) through bolts, a collection assembly (52) is arranged outside the conical filter screen (51), the stirring mechanism (6) is installed at the bottom of the conical filter screen (51), and a cleaning assembly (53) is rotationally connected to the outer surface of the conical filter screen (51), and the bottom of the cleaning assembly (53) penetrates through the conical filter screen (51) and is connected to the top of the stirring mechanism (6); The cleaning assembly (53) includes a rotating shaft (531), the rotating shaft (531) is rotationally connected to the middle of the conical filter screen (51), cleaning arms (532) are fixedly connected to the upper end of the outer surface of the rotating shaft (531) at equal intervals, a cleaning brush plate (533) is fixedly installed on the inner side of the cleaning arm (532), the inner side of the cleaning brush plate (533) is in fit connection with the outer surface of the conical filter screen (51), a second gear (534) is fixedly installed at the top of the rotating shaft (531), the second gear (534) is meshed with a first gear (74), and the bottom of the rotating shaft (531) is connected to the top of the stirring mechanism (6); The stirring mechanism (6) includes fixed columns (61), the fixed columns (61) are fixedly installed at the bottom of the conical filter screen (51) in an annular arrangement at equal intervals, an annular frame (62) is fixedly installed at the bottom of the fixed columns (61), a transmission assembly (63) is arranged at the bottom of the annular frame (62), a stirring assembly (64) is installed at the bottom of the transmission assembly (63), and the stirring assembly (64) is movably installed inside the processing tank body (3); The transmission assembly (63) includes a cross (631) and an internal gear ring (632), the cross (631) is fixedly installed at the bottom of the rotating shaft (531), the internal gear ring (632) is fixedly installed at the bottom of the annular frame (62), outer gears (633) are rotationally connected to the outer ends of the bottom of the cross (631) in an annular arrangement at equal intervals, internal gears (634) are rotationally connected to the inner sides of the bottom of the cross (631) in an annular arrangement at equal intervals, the internal gears (634) are meshed with the outer gears (633), and the stirring assembly (64) is arranged at the bottom of the cross (631); The stirring assembly (64) includes an auger (641) and a stirring frame (642). The auger (641) is fixedly installed at the bottom of the cross (631), and the stirring frames (642) are fixedly installed at the bottoms of the respective internal gears (634). Stirring plates (643) are fixedly installed at equal intervals and linearly arranged on the inner side of the stirring frame (642).

2. The deep treatment device for ship ballast water according to claim 1, characterized in that, The driving mechanism (7) includes a support frame (71). The support frame (71) is fixedly installed at the rear side of the upper end of the treatment tank body (3). A top plate (72) is fixedly installed at the top of the support frame (71). A driving motor (73) is fixedly installed at the top of the top plate (72). The output end of the driving motor (73) penetrates through the top plate (72) and is fixedly installed with a first gear (74). The first gear (74) is meshed and connected with the cleaning assembly (53).

3. The deep treatment device for ship ballast water according to claim 2, characterized in that, A connecting arm (75) is fixedly installed inside the support frame (71). A ring-shaped pipe (76) is fixedly installed at the end of the connecting arm (75). Drain pipes (77) are fixedly installed at equal intervals at the bottom of the ring-shaped pipe (76). A water adding pipe (78) is fixedly installed on the outer side of the ring-shaped pipe (76). A water adding hopper (79) is fixedly installed at the top of the water adding pipe (78).

4. The deep treatment device for ship ballast water according to claim 3, characterized in that, Activated carbon filter cores (9), ultrafiltration membrane filter cores (10), nanofiltration membrane filter cores (11), and reverse osmosis membrane filter cores (12) are sequentially installed at equal intervals and linearly arranged inside the purifier (8). The activated carbon filter core (9) is composed of activated carbon adsorption plates inside. The ultrafiltration membrane filter core (10) is composed of a polyvinylidene fluoride filter layer material inside. The nanofiltration membrane filter core (11) is composed of a sulfonated polyethersulfone filter layer material inside. The reverse osmosis membrane filter core (12) is composed of an aromatic polyamide filter layer material inside. A discharge pipe (13) is fixedly connected to the outer side of the purifier (8). A connecting flange is fixedly installed at the outer end of the discharge pipe (13).

5. The deep treatment device for ship ballast water according to claim 4, characterized in that, The lower ends of the auger (641) and the treatment tank body (3) are both tapered.

6. The ship ballast water depth treatment device according to claim 5, characterized in that, The collection assembly (52) includes a ring-shaped guiding hopper (521) and a scraping frame (535). The cross-sectional shape of the ring-shaped guiding hopper (521) is V-shaped. A discharge pipe (522) is fixedly installed on one side of the bottom of the ring-shaped guiding hopper (521). A collection box (523) is fixedly installed at the outer end of the discharge pipe (522). The top of the discharge pipe (522) is communicated with the inside of the ring-shaped guiding hopper (521). A collection drawer (524) is slidably connected to the lower end inside the collection box (523). Magnetic plates (525) are fixedly connected to both outer ends of the collection drawer (524). The magnetic plates (525) are magnetically connected to the collection box (523). The scraping frame (535) is fixedly installed at the outer end of the cleaning arm (532). The bottom of the scraping frame (535) is in close contact with the top of the ring-shaped guiding hopper (521).

7. A method for deep treatment of ship ballast water, using a device for deep treatment of ship ballast water as described in claim 6, characterized in that, It includes the following steps: S1: Use a sand filter to preliminarily filter the ballast water to remove larger impurities; S2: Inject the preliminarily filtered ballast water into the water filling hopper (79), guide it through the water filling hopper (79) and flow into the annular pipe (76), and then transport it to the center of the top of the conical filter screen (51) through the drain pipe (77); S3: Start the drive motor (73), the motor drives the first gear (74) to rotate, drives the second gear (534) to operate, prompts the rotating shaft (531) to rotate, drives the cleaning arm (532) to rotate, the cleaning brush plate (533) cleans the conical filter screen (51), and the scraping frame (535) cleans the annular guiding hopper (521), and the impurities fall into the collection drawer (524) in the collection box (523); S4: The drive motor (73) operates, drives the rotating shaft (531) to rotate, and the cross (631) at the bottom of the rotating shaft (531) rotates accordingly, driving the auger (641) to stir the ballast water in the middle of the treatment tank. At the same time, it drives the external gear (633) and the internal gear (634) to make a circular motion around the rotating shaft (531), causing the stirring frame (642) and the stirring plate (643) to rotate; S5: Add the disinfectant to the treatment tank body (3), and the stirring mechanism (6) makes the disinfectant and the ballast water mix quickly and evenly; S6: After the disinfection treatment of the ballast water is completed, open the drain valve (4) at the bottom of the treatment tank, and the treated ballast water flows into the purifier (8), and is purified layer by layer through the activated carbon filter element (9), ultrafiltration membrane filter element (10), nanofiltration membrane filter element (11) and reverse osmosis membrane filter element (12).

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