Automatic seawater filtering equipment used on ship

Abstract

The invention relates to the technical field of seawater filtering, and discloses automatic seawater filtering equipment for ships, which comprises a filtering box body, a water inlet pipe is fixedly connected to the top end of the side surface of the filtering box body, a first-stage filtering mechanism is arranged below the water inlet pipe, and a second-stage filtering mechanism is fixedly connected to the bottom end of the first-stage filtering mechanism; the bottom end of the secondary filtering mechanism is movably connected with a supporting mechanism, and the bottom end of the supporting mechanism is fixedly connected with a cleaning mechanism; seawater falls above the rotating plate through the water inlet pipe, then the rotating plate drives the output gear to rotate through the output shaft, when the rotating plate rotates in the first filter cartridge, the seawater is filtered by the first filter cartridge, impurities remaining on the first filter cartridge are pushed into the second filter cartridge by the rotating rotating plate, and the impurities are filtered by the second filter cartridge. The scraping plate and the rotating plate rotate synchronously, the rotating plate pushes the impurities on the second filter cartridge into the impurity tank, and the seawater in the impurities is filtered by the second filter cartridge again.

Description

Technical Field

[0001] This invention relates to the field of seawater filtration technology, and more specifically to an automatic seawater filtration device for use on ships. Background Technology

[0002] When a ship is sailing at sea, its internal mechanical and electrical equipment generates a lot of heat during operation, so it needs to be cooled by water. Due to the environment in which the ship is located, the water source for cooling is seawater. However, seawater contains a lot of impurities. Therefore, in order to avoid the impurities in the seawater from affecting the ship's equipment, the water source must be filtered before it can be used. The main function of marine seawater filtration is to remove impurities and salt from seawater, ensuring the safe operation of the ship's engine cooling system and navigation equipment. Seawater filters protect the normal operation of the cooling system by filtering out impurities, dust, rust and other harmful substances from seawater, and prevent the ship's engine from being damaged by particles, silt, microorganisms and other substances contained in seawater. In addition, seawater filters can also reduce the risk of hull corrosion and equipment damage, and improve navigation safety. Nowadays, when filtering seawater, the seawater contains impurities such as fish eggs, algae, or sand and gravel. Because the types of impurities in seawater are quite complex, it is necessary to perform staged filtration. The first-stage filtration equipment needs to intercept larger impurities, and the impurities are also larger in size. Therefore, the first-stage filtration device will frequently experience filter clogging. When the filter is clogged, it is necessary to stop the machine for cleaning, which reduces the efficiency of seawater filtration. After the first stage of seawater filtration, the impurities in the seawater are reduced. When the second stage of filtration is performed, the frequency of filter clogging is reduced. However, the filter still needs to be cleaned. Because the filter screen used in the second stage of filtration has a smaller pore size, it is difficult to clean the filter screen well by simply scraping it. Summary of the Invention

[0003] In order to overcome the above-mentioned defects of the prior art, embodiments of the present invention provide an automatic seawater filtration device for ships to solve the technical problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an automatic seawater filtration device for ships, comprising a filter box, an inlet pipe fixedly connected to the top of the side of the filter box, a primary filtration mechanism provided below the inlet pipe, a secondary filtration mechanism fixedly connected to the bottom of the primary filtration mechanism, a support mechanism movably connected to the bottom of the secondary filtration mechanism, a cleaning mechanism fixedly connected to the bottom of the support mechanism, and a drain pipe fixedly connected to the bottom of the side of the filter box where the inlet pipe is located. The primary filtration mechanism includes a first filter cylinder capable of filtering seawater. A rotating plate is movably connected to the inside of the top of the first filter cylinder. An output shaft is fixedly connected to the side of the rotating plate away from the first filter cylinder. A second filter cylinder is fixedly connected to the side of the first filter cylinder. A scraper is movably connected to the inside of the top of the second filter cylinder. A driven shaft is fixedly connected to the scraper inside away from the second filter cylinder.

[0005] In a preferred embodiment, the bottom end of the filter box away from the water inlet pipe is provided with an impurity tank, the bottom end of the impurity tank is provided with a discharge ramp, the side of the discharge ramp is fixedly connected with a discharge channel, the side of the discharge ramp is fixedly connected with a partition plate, and the connecting plate of the secondary filtration mechanism is located above the center of the discharge ramp.

[0006] In a preferred embodiment, an output gear is fixedly connected to the side of the output shaft, a transmission gear meshes with the side of the output gear, a driven gear meshes with the side of the transmission gear away from the output gear, the side of the driven gear is fixedly connected to the side of the driven shaft, the side of the output shaft and the side of the driven shaft are movably connected to the interior of the filter housing, and the scraper has a hollow structure inside.

[0007] In a preferred embodiment, the secondary filtration mechanism includes a connecting inclined plate fixedly connected to the side of the second filter cartridge in the primary filtration mechanism away from the first filter cartridge. A connecting plate is fixedly connected to the bottom end of the connecting inclined plate, and an inclined plate is provided below the connecting plate. A filter plate is fixedly connected to the side of the inclined plate away from the connecting plate, and a rotating shaft is fixedly connected to the side of the filter plate away from the inclined plate. The two ends of the rotating shaft are movably connected to the interior of the filter housing. When the filter plate is in a horizontal state, the side of the inclined plate away from the filter plate tilts upward.

[0008] In a preferred embodiment, the support mechanism includes a servo motor that provides power. A bidirectional screw is fixedly connected to the side of the servo motor. Two movable blocks are threadedly connected to both sides of the bidirectional screw. The two movable blocks are located inside the filter housing and are mirror-symmetrical with respect to the center of the filter housing. The threaded grooves on both sides of the bidirectional screw are in opposite directions. A second inclined block is fixedly connected to the top of each movable block. A first inclined block is provided at the top of the second inclined block, and the bottom of the first inclined block is adapted to the top of the second inclined block.

[0009] In a preferred embodiment, a support plate is fixedly connected to the top of the first inclined block. The top of the support plate contacts the bottom of the filter plate in the secondary filtration mechanism. Limiting rings are fixedly connected to both sides of the bottom of the support plate. Limiting rods are movably connected inside the limiting rings. The side of the limiting rods is fixedly connected to the inside of the filter box.

[0010] In a preferred embodiment, the cleaning mechanism includes a movable plate fixedly connected to a movable block within the support mechanism. A connecting rod is fixedly connected to the side of the movable plate, and a sealing push plate is fixedly connected to the side of the connecting rod away from the movable plate. A receiving cavity is movably connected to the side of the sealing push plate, and the bottom end of the receiving cavity is fixedly connected to the bottom end of the filter box.

[0011] In a preferred embodiment, a one-way valve is fixedly connected to the side of the receiving cavity away from the sealing push plate, a connecting pipe is fixedly connected to the side of the receiving cavity, a water mist nozzle is fixedly connected to the top of the connecting pipe, the water mist nozzle is located at the bottom of the secondary filtration mechanism, and the connecting pipe is located at the end of the side of the receiving cavity near the one-way valve.

[0012] The technical effects and advantages of this invention are as follows: 1. In this invention, seawater falls onto the top of the rotating plate through the inlet pipe, causing the rotating plate to drive the output gear to rotate through the output shaft. When the rotating plate rotates inside the first filter cylinder, the seawater is filtered through the first filter cylinder. The impurities remaining on the first filter cylinder are pushed into the second filter cylinder by the rotating plate. The scraper rotates synchronously with the rotating plate, and the rotating plate pushes the impurities on the second filter cylinder into the impurity tank. The seawater in the impurities is filtered again through the second filter cylinder. 2. In this invention, seawater filtered once by the primary filtration mechanism flows to the top of the filter plate, which is in a parallel state. When the seawater falls onto the filter plate, it flows on the filter plate during filtration. The entire filter plate can be filtered, avoiding the situation where seawater accumulates in one place and cannot be discharged when part of the filter is blocked. This application can perform seawater filtration for a long time. 3. When cleaning the filter plate, the servo motor moves the second inclined blocks on both sides inward through the moving block. At this time, the support plate descends and causes the filter plate and the inclined plate to rotate and descend around the rotating shaft. After the inclined plate rotates, it contacts the partition plate. The inclined plate is in a horizontal state, while the filter plate will tilt downward in the direction of the inclined plate. When the seawater flows above the filter plate, it will flow towards the inclined plate and automatically flush the impurities on the filter plate into the impurity tank. 4. When cleaning the filter plate, the moving blocks move inward, causing the sealing push plate to move synchronously. The sealing push plate squeezes the water in the receiving cavity into the connecting pipe and sprays it out from the water mist nozzle, flushing out the impurities in the filter holes of the filter plate, thus achieving a better cleaning effect. When the moving blocks on both sides move outward, the support plate moves upward, causing the filter plate to move upward and reset, continuing the filtration work. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2This is a cross-sectional schematic diagram of the internal structure of the filter housing of the present invention.

[0015] Figure 3 This is an exploded view of the internal structure of the filter box of the present invention.

[0016] Figure 4 This is an exploded structural diagram of the primary filtration mechanism of the present invention.

[0017] Figure 5 This is a schematic diagram of the secondary filtration mechanism of the present invention.

[0018] Figure 6 This is a schematic diagram of the overall structure of the support mechanism and cleaning mechanism of the present invention.

[0019] Figure 7 This is an exploded structural diagram of the support mechanism of the present invention.

[0020] Figure 8 This is a cross-sectional structural diagram of the cleaning mechanism of the present invention.

[0021] Figure 9 This is a schematic diagram of the cleaning mechanism of the present invention when cleaning the secondary filtration mechanism.

[0022] The attached figures are labeled as follows: 1. Filter box; 2. Inlet pipe; 3. Primary filtration mechanism; 301. Rotating plate; 302. Output shaft; 303. Output gear; 304. Transmission gear; 305. Driven gear; 306. Driven shaft; 307. Scraper; 308. First filter cartridge; 309. Second filter cartridge; 4. Secondary filtration mechanism; 401. Rotating shaft; 402. Filter plate; 403. Inclined plate; 404. Connecting plate; 405. Connecting inclined plate; 5. Support mechanism; 50 1. Support plate; 502. First inclined block; 503. Limiting ring; 504. Limiting rod; 505. Second inclined block; 506. Moving block; 507. Bidirectional screw; 508. Servo motor; 6. Cleaning mechanism; 601. Moving plate; 602. Connecting rod; 603. Sealing push plate; 604. Receiving cavity; 605. One-way valve; 606. Connecting pipe; 607. Water mist nozzle; 7. Divider plate; 8. Impurity tank; 9. Discharge inclined plate; 10. Discharge channel; 11. Drain pipe. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The automatic seawater filtration device for ships involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Reference Figure 1 , Figure 2 as well as Figure 5 This invention provides an automatic seawater filtration device for ships, comprising a filter box 1, an inlet pipe 2 fixedly connected to the top of the side of the filter box 1, a primary filtration mechanism 3 below the inlet pipe 2, a secondary filtration mechanism 4 fixedly connected to the bottom of the primary filtration mechanism 3, a support mechanism 5 movably connected to the bottom of the secondary filtration mechanism 4, a cleaning mechanism 6 fixedly connected to the bottom of the support mechanism 5, a drain pipe 11 fixedly connected to the bottom of the side of the filter box 1 where the inlet pipe 2 is located, an impurity trough 8 provided at the bottom of the side of the filter box 1 away from the inlet pipe 2, a discharge ramp 9 provided at the bottom of the impurity trough 8, a discharge channel 10 fixedly connected to the side of the discharge ramp 9, a partition plate 7 fixedly connected to the side of the discharge ramp 9, and a connecting plate 404 located above the center of the discharge ramp 9 within the secondary filtration mechanism 4.

[0025] In this embodiment, after the seawater is filtered by the primary filtration mechanism 3, the impurities in the primary filtration mechanism 3 fall into the impurity trough 8 from above. Below the impurity trough 8 is the discharge ramp 9, so the impurities can automatically flow through the discharge ramp 9 to the discharge channel 10 for discharge. When the impurities in the primary filtration mechanism 3 fall, they will fall from the side of the connecting plate 404. The connecting plate 404 is located above the center of the discharge ramp 9. Therefore, when the impurities fall, they will only fall into the impurity trough 8 and will not pollute the filtered seawater by passing through the partition plate 7 away from the impurity trough 8.

[0026] Reference Figure 2 and Figure 4 The primary filtration mechanism 3 includes a first filter cylinder 308 capable of filtering seawater. A rotating plate 301 is movably connected to the inside of the top of the first filter cylinder 308. An output shaft 302 is fixedly connected to the side of the rotating plate 301 away from the first filter cylinder 308. A second filter cylinder 309 is fixedly connected to the side of the first filter cylinder 308. A scraper 307 is movably connected to the inside of the top of the second filter cylinder 309. A driven shaft 306 is fixedly connected to the inside of the scraper 307 away from the second filter cylinder 309. An output gear 303 is fixedly connected to the side of the output shaft 302. A transmission gear 304 meshes with the side of the output gear 303. A driven gear 305 meshes with the side of the transmission gear 304 away from the output gear 303. The side of the driven gear 305 is fixedly connected to the side of the driven shaft 306. The sides of the output shaft 302 and the driven shaft 306 are movably connected to the inside of the filter housing 1. The scraper 307 has a hollow structure inside.

[0027] In this embodiment, the inlet pipe 2 is located above the rotating plate 301 on the side away from the scraper 307. Therefore, when seawater falls into the inlet pipe 2, it will drive the rotating plate 301 to rotate. When the rotating plate 301 rotates, it will cause the scraper 307 to rotate synchronously with the rotating plate 301 after transmission. The rotating plate 301 will push impurities into the second filter cylinder 309. If there is a lot of seawater, the rotating plate 301 will push the impurities and seawater together into the second filter cylinder 309. At this time, it can be filtered through the second filter cylinder 309, ensuring that this application can filter seawater of different flow rates. The scraper 307 has a hollow structure, which reduces the mass of the scraper 307 and ensures that the rotating plate 301 can drive the scraper 307 to rotate. When the scraper 307 rotates, it can push out impurities. Therefore, this application automatically pushes out impurities when filtering seawater, avoids filter screen blockage, and can automatically clean itself.

[0028] Reference Figure 3 and Figure 5 The secondary filtration mechanism 4 includes a connecting inclined plate 405 that is fixedly connected to the side of the second filter cylinder 309 in the primary filtration mechanism 3 away from the first filter cylinder 308. A connecting plate 404 is fixedly connected to the bottom end of the connecting inclined plate 405. An inclined plate 403 is provided below the connecting plate 404. A filter plate 402 is fixedly connected to the side of the inclined plate 403 away from the connecting plate 404. A rotating shaft 401 is fixedly connected to the side of the filter plate 402 away from the inclined plate 403. The two ends of the rotating shaft 401 are movably connected to the interior of the filter box 1. When the filter plate 402 is in a horizontal state, the side of the inclined plate 403 away from the filter plate 402 tilts upward.

[0029] In this embodiment, the seawater filtered by the first filter cylinder 308 and the second filter cylinder 309 flows to the top of the filter plate 402. Since the filter plate 402 is horizontal, the seawater above the filter plate 402 moves and is filtered and flows downward. The inclined plate 403 is tilted upward on the side away from the filter plate 402, which can prevent the seawater from flowing to the side of the inclined plate 403 away from the filter plate 402, thereby preventing the filtered seawater from flowing into the impurity tank 8. The inclined plate 403 is located above the partition plate 7, and the filter plate 402 is on the side of the partition plate 7 away from the discharge inclined plate 9, which prevents the filtered seawater from falling into the impurity tank 8 and being wasted.

[0030] Reference Figure 6 , Figure 7 as well as Figure 9The support mechanism 5 includes a servo motor 508 that provides power. A bidirectional screw 507 is fixedly connected to the side of the servo motor 508. Two moving blocks 506 are threadedly connected to both sides of the bidirectional screw 507. The two moving blocks 506 are located inside the filter housing 1 and are mirror-symmetrical with respect to the center of the filter housing 1. The threaded grooves on both sides of the bidirectional screw 507 are in opposite directions. A second inclined block 505 is fixedly connected to the top of the moving block 506. A first inclined block 502 is provided at the top of the second inclined block 505. The bottom end of the first inclined block 502 is adapted to the top end of the second inclined block 505. A support plate 501 is fixedly connected to the top of the first inclined block 502. The top end of the support plate 501 is in contact with the bottom end of the filter plate 402 in the secondary filtration mechanism 4. Limiting rings 503 are fixedly connected to both sides of the bottom end of the support plate 501. A limiting rod 504 is movably connected inside the limiting ring 503. The side of the limiting rod 504 is fixedly connected to the inside of the filter housing 1.

[0031] In this embodiment, the second inclined block 505 is connected to the support plate 501, and the two sides of the support plate 501 are limited by the limiting ring 503 and the limiting rod 504. Therefore, the support plate 501 and the first inclined block 502 can only move vertically up and down. The bottom end of the first inclined block 502 is adapted to the top end of the second inclined block 505. When the two second inclined blocks 505 move inward, the first inclined block 502 will move downward, thereby causing the support plate 501 to move downward. At this time, the filter plate 402 and the inclined plate 403 will rotate, becoming... Figure 9 As shown in the diagram, seawater flows above the filter plate 402, automatically rinsing it.

[0032] Reference Figure 6 , Figure 8 as well as Figure 9 The cleaning mechanism 6 includes a movable plate 601 fixedly connected to a movable block 506 inside the support mechanism 5. A connecting rod 602 is fixedly connected to the side of the movable plate 601. A sealing push plate 603 is fixedly connected to the side of the connecting rod 602 away from the movable plate 601. A receiving cavity 604 is movably connected to the side of the sealing push plate 603. The bottom end of the receiving cavity 604 is fixedly connected to the bottom end inside the filter box 1. A one-way valve 605 is fixedly connected to the side of the receiving cavity 604 away from the sealing push plate 603. A connecting pipe 606 is fixedly connected to the side of the receiving cavity 604. A water mist nozzle 607 is fixedly connected to the top end of the connecting pipe 606. The water mist nozzle 607 is located at the bottom end of the secondary filtration mechanism 4. The connecting pipe 606 is located at the end of the receiving cavity 604 near the one-way valve 605.

[0033] In this embodiment, when the moving blocks 506 on both sides move inward synchronously, they will drive the moving plate 601 to move synchronously. When the moving plate 601 moves, it will drive the sealing push plate 603 to move in the receiving cavity 604 through the connecting rod 602. At this time, the seawater filtered in the receiving cavity 604 will be pressed into the connecting pipe 606 and finally sprayed into the filter hole of the filter plate 402 through the water mist nozzle 607, flushing out the stubborn impurities in the filter hole. Finally, all the impurities flow into the impurity tank 8, and the flow direction of the one-way valve 605 is from the filter box 1 to the receiving cavity 604.

[0034] The working principle of this invention: Seawater flows through the inlet pipe 2 to the top of the rotating plate 301, and the seawater is located on the side of the rotating plate 301 away from the impurity tank 8. Therefore, when the seawater flows to the top of the rotating plate 301, it causes the rotating plate 301 to drive the output shaft 302 to rotate. When the rotating plate 301 rotates inside the first filter cylinder 308, it moves from the side of the first filter cylinder 308 away from the second filter cylinder 309 to the side of the second filter cylinder 309. Therefore, when the rotating plate 301 rotates inside the first filter cylinder 308, the seawater flowing into the first filter cylinder 308 will be filtered by the first filter cylinder 308 and flow downwards, while the impurities remain. The impurities remain in the first filter cylinder 308. At this time, the rotating plate 301 will push the impurities into the second filter cylinder 309. When the output shaft 302 rotates, it drives the driven gear 305 to rotate through the output gear 303 and the transmission gear 304. When the driven gear 305 rotates, it drives the scraper 307 to rotate synchronously and in the same direction as the rotating plate 301 through the driven shaft 306. When the scraper 307 rotates in the second filter cylinder 309, it will push the impurities onto the connecting inclined plate 405. The impurities automatically slide down into the impurity trough 8 on the connecting inclined plate 405. The impurities in the impurity trough 8 move above the discharge inclined plate 9 and are discharged into the discharge channel 10. After being filtered by the primary filtration mechanism 3, the seawater flows onto the filter plate 402. The seawater will flow on the filter plate 402, so the seawater will be filtered at different positions on the filter plate 402. The filtered seawater flows into the interior of the filter box 1 and is discharged through the drain pipe 11. The side of the inclined plate 403 away from the filter plate 402 is inclined upward relative to the filter plate 402. When the filter plate 402 is in a horizontal state, the seawater will not flow to the side of the inclined plate 403 away from the filter plate 402, thus avoiding the seawater from flowing directly into the impurity tank 8 through the gap between the inclined plate 403 and the connecting plate 404 and being wasted. When there are many impurities on the filter plate 402, the servo motor 508 starts and drives the bidirectional screw 507 to rotate. When the bidirectional screw 507 rotates, the moving blocks 506 on both sides move inward synchronously. The two moving blocks 506 drive the second inclined blocks 505 to move inward synchronously. When the two second inclined blocks 505 move inward synchronously, the first inclined block 502 above it moves downward, which in turn causes the support plate 501 to move downward. When the support plate 501 moves downward, the filter plate 402 and the inclined plate 403 will move downward around the rotating shaft 401. At this time, the bottom end of the filter plate 402 contacts the top of the partition plate 7, the inclined plate 403 is in a horizontal state, and the side of the filter plate 402 closest to the inclined plate 403 tilts downward. Figure 9 As shown, the seawater on the filter plate 402 will flow towards the inclined plate 403. The seawater flows from the side of the filter plate 402 away from the inclined plate 403 through the inclined plate 403 and into the impurity tank 8. At this time, the impurities above the filter plate 402 will be washed into the impurity tank 8. When the moving blocks 506 on both sides move inward synchronously, they will drive the moving plate 601 to move synchronously. When the moving plate 601 moves, it will drive the sealing push plate 603 to move in the receiving cavity 604 through the connecting rod 602. At this time, the filtered seawater in the receiving cavity 604 will be pressed into the connecting pipe 606 and finally sprayed into the filter hole of the filter plate 402 through the water mist nozzle 607, flushing out the stubborn impurities in the filter hole. Finally, all the impurities flow into the impurity tank 8. After cleaning the filter plate 402, the servo motor 508 controls the bidirectional screw 507 to rotate, thereby causing the moving blocks 506 on both sides to move outward synchronously. When the moving blocks 506 move, the support plate 501 moves upward and the filter plate 402 is reset. The moving plate 601 moves and resets with the moving blocks 506, and the seawater at the bottom of the filter box 1 enters the receiving cavity 604 through the one-way valve 605.

[0035] In conclusion, the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic seawater filtration device for ships, comprising a filter housing (1), characterized in that: A water inlet pipe (2) is fixedly connected to the top of the side of the filter box (1). A primary filtration mechanism (3) is provided below the water inlet pipe (2). A secondary filtration mechanism (4) is fixedly connected to the bottom of the primary filtration mechanism (3). A support mechanism (5) is movably connected to the bottom of the secondary filtration mechanism (4). A cleaning mechanism (6) is fixedly connected to the bottom of the support mechanism (5). A drain pipe (11) is fixedly connected to the bottom of the side of the filter box (1) where the water inlet pipe (2) is located. The primary filtration mechanism (3) includes a first filter cylinder (308) capable of filtering seawater. A rotating plate (301) is movably connected to the inside of the top of the first filter cylinder (308). An output shaft (302) is fixedly connected to the side of the rotating plate (301) away from the first filter cylinder (308). A second filter cylinder (309) is fixedly connected to the side of the first filter cylinder (308). A scraper (307) is movably connected to the inside of the top of the second filter cylinder (309). A driven shaft (306) is fixedly connected to the inside of the scraper (307) away from the second filter cylinder (309).

2. The automatic seawater filtration device for ships according to claim 1, characterized in that: The bottom end of the filter box (1) away from the water inlet pipe (2) is provided with an impurity trough (8), the bottom end of the impurity trough (8) is provided with a discharge sloping plate (9), the side of the discharge sloping plate (9) is fixedly connected with a discharge channel (10), the side of the discharge sloping plate (9) is fixedly connected with a partition plate (7), and the connecting plate (404) in the secondary filtration mechanism (4) is located above the center of the discharge sloping plate (9).

3. The automatic seawater filtration device for ships according to claim 1, characterized in that: An output gear (303) is fixedly connected to the side of the output shaft (302). A transmission gear (304) meshes with the side of the output gear (303). A driven gear (305) meshes with the side of the transmission gear (304) away from the output gear (303). The side of the driven gear (305) is fixedly connected to the side of the driven shaft (306). The sides of the output shaft (302) and the driven shaft (306) are movably connected to the interior of the filter box (1). The scraper (307) has a hollow structure inside.

4. The automatic seawater filtration device for ships according to claim 1, characterized in that: The secondary filtration mechanism (4) includes a connecting inclined plate (405) fixedly connected to the side of the second filter cylinder (309) in the primary filtration mechanism (3) away from the first filter cylinder (308). A connecting plate (404) is fixedly connected to the bottom end of the connecting inclined plate (405). An inclined plate (403) is provided below the connecting plate (404). A filter plate (402) is fixedly connected to the side of the inclined plate (403) away from the connecting plate (404). A rotating shaft (401) is fixedly connected to the side of the filter plate (402) away from the inclined plate (403). Both ends of the rotating shaft (401) are movably connected to the interior of the filter box (1). When the filter plate (402) is in a horizontal state, the side of the inclined plate (403) away from the filter plate (402) tilts upward.

5. The automatic seawater filtration device for ships according to claim 1, characterized in that: The support mechanism (5) includes a servo motor (508) that can provide power. A bidirectional screw (507) is fixedly connected to the side of the servo motor (508). Two moving blocks (506) are threadedly connected to both sides of the bidirectional screw (507). The two moving blocks (506) are located inside the filter box (1) and are mirror-symmetrical with respect to the center of the filter box (1). The thread grooves on both sides of the bidirectional screw (507) are opposite in direction. A second inclined block (505) is fixedly connected to the top of the moving block (506). A first inclined block (502) is provided at the top of the second inclined block (505). The bottom end of the first inclined block (502) is adapted to the top end of the second inclined block (505).

6. The automatic seawater filtration device for ships according to claim 5, characterized in that: The top of the first inclined block (502) is fixedly connected to a support plate (501). The top of the support plate (501) is in contact with the bottom of the filter plate (402) in the secondary filtration mechanism (4). Limiting rings (503) are fixedly connected to both sides of the bottom of the support plate (501). A limiting rod (504) is movably connected inside the limiting ring (503). The side of the limiting rod (504) is fixedly connected to the inside of the filter box (1).

7. The automatic seawater filtration device for ships according to claim 1, characterized in that: The cleaning mechanism (6) includes a movable plate (601) fixedly connected to a movable block (506) inside the support mechanism (5). A connecting rod (602) is fixedly connected to the side of the movable plate (601). A sealing push plate (603) is fixedly connected to the side of the connecting rod (602) away from the movable plate (601). A receiving cavity (604) is movably connected to the side of the sealing push plate (603). The bottom end of the receiving cavity (604) is fixedly connected to the bottom end inside the filter box (1).

8. The automatic seawater filtration device for ships according to claim 7, characterized in that: A one-way valve (605) is fixedly connected to the side of the receiving cavity (604) away from the sealing push plate (603). A connecting pipe (606) is fixedly connected to the side of the receiving cavity (604). A water mist nozzle (607) is fixedly connected to the top of the connecting pipe (606). The water mist nozzle (607) is located at the bottom of the secondary filtration mechanism (4). The connecting pipe (606) is located at the end of the side of the receiving cavity (604) near the one-way valve (605).

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