Anti-fouling intake coarse water filter for a marine vessel
By designing a combination of multiple filter layers and rotating brush plates, the scaling problem of traditional coarse water filters is solved, achieving more thorough layered filtration and convenient cleaning.
Patent Information
- Application Number
- CN202210125490.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-02-10
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2042-02-10
AI Technical Summary
Traditional coarse water filters are prone to scaling during use, resulting in poor filtration and difficulty in cleaning due to accumulated impurities.
The design incorporates multiple filter layers, and a rotating brush plate cleans the inner wall of the filter layers during water flow, scraping dirt off to designated locations. The patented rotating brush plate scrapes away accumulated debris to designated locations, facilitating cleaning.
It achieves a more thorough layered filtration effect and effectively cleans the dirt on the inner wall of the filter layer while the water flows, simplifying the cleaning process and making it easy to promote.
Smart Images
Figure CN114642904B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of ships, and particularly relates to a ship anti-fouling suction coarse water filter. BACKGROUND
[0002] With the rapid development of modern industry, suction coarse water filters are used more and more widely. The suction coarse water filter is mainly used in the water balance system of a ship ballast tank. The suction coarse water filter is a valve for rough filtering of seawater. The traditional coarse water filter is designed and manufactured according to the ship industry standard, and is suitable for seawater or freshwater. However, the common problem is that impurities are easily accumulated in the filter and are difficult to clean. In addition, the existing suction coarse water filter has poor filtering effect in use, and scaling phenomenon is easily generated at the filter core or filter screen, which leads to low filtering effect. Therefore, the application provides a ship anti-fouling suction coarse water filter which is provided with multiple filter layers, and a brush plate is driven to rotate to clean the inner wall of the filter layer while water flows, and the cleaned dirt is scraped off and accumulated at a specified position. SUMMARY
[0003] The application aims to provide a ship anti-fouling suction coarse water filter which is provided with multiple filter layers, so that the coarse water is filtered in layers and the filtering is more thorough. In addition, a brush plate is driven to rotate to clean the inner wall of the filter layer while water flows, and the cleaned dirt is scraped off and accumulated at a specified position, so that the dirt is easy to clean and the application is suitable for promotion.
[0004] The application provides the following technical scheme: a ship anti-fouling suction coarse water filter, which comprises a filter cylinder, a water inlet pipe, a water outlet pipe, an inner filter chamber and an outer filter chamber. The filter cylinder is fixedly connected with the water inlet pipe and the water outlet pipe at two sides. The outer filter chamber is fixedly arranged in the filter cylinder. The inner filter chamber is fixedly arranged in the outer filter chamber. A sliding pipe is slidably arranged in the water inlet pipe. The sliding pipe is tightly connected with the inner filter chamber after extending to the inner filter chamber. A first filter layer is fixedly arranged at the opening of the sliding pipe. A second filter layer is arranged around the side of the inner filter chamber. The inner filter chamber is fixedly connected with the outer filter chamber through a backflow pipe at the side close to the sliding pipe. A connecting pipe is fixedly arranged at the side of the outer filter chamber away from the backflow pipe. A third filter layer is fixedly arranged at the side of the connecting pipe close to the water outlet pipe. The connecting pipe is fixedly connected with the water outlet pipe.
[0005] The first filter layer center point is connected with a rotating rod through a first rotating shaft, the rotating rod is fixedly provided with a first brush plate outside the first filter layer, the rotating rod extends to the inner filter chamber and is connected with the inner filter chamber through a second rotating shaft, the rotating rod is fixedly provided with symmetrical recessed columns at the second rotating shaft, the recessed columns are located in the inner filter chamber, the recessed columns are provided with recessed grooves, the recessed grooves are fixedly provided with elastic pads, the recessed grooves are slidably provided with a second brush plate, the second brush plate extends to the second filter layer and is connected with a rotating shaft through a fourth rotating shaft, the rotating shaft is fixedly provided with a first scraper, the rotating shaft extends to the reflux pipe and is fixedly provided with a second scraper, the rotating rod is fixedly provided with a propeller base in the outer filter chamber, the propeller base is fixedly provided with a propeller, the rotating rod extends to the third filter layer and is connected with the third filter layer through a third rotating shaft, the rotating rod is fixedly provided with a third brush plate inside the third filter layer, and the third brush plate is fixedly provided with a third scraper on the inner wall of the connecting pipe.
[0006] The outer filter chamber bottom is fixedly provided with a stacking bin, the reflux pipe below is provided with a first drain, the first drain is fixedly connected with the stacking bin, the connecting pipe below is provided with a second drain, and the stacking bin bottom is threadedly connected with a pollution discharge cover.
[0007] Preferably, the filter cartridge top end is provided with an opening, the filter cartridge side edge is fixedly provided with a side edge rotating shaft, the side edge rotating shaft extends above the filter cartridge and is fixedly provided with a gland, and the filter cartridge opening is detachably provided with a barrel cover.
[0008] Preferably, the first filter layer is a coarse mesh screen, the second filter layer is a plurality of semicircular columns arranged closely, and the third filter layer is a fine mesh screen.
[0009] Preferably, the first scraper is slidably connected with the inner wall of the reflux pipe, the second scraper is slidably connected with the inner wall of the connecting pipe, and the first brush plate and the third brush plate are fixedly provided with brushes close to the first filter layer and the third filter layer.
[0010] Preferably, the first scraper is provided with an arc surface at four side edges, the shape of the arc surface is slidably matched with the shape of the column of the second filter layer, and the protruding part of the first scraper is matched with the interval distance between the second filter layer.
[0011] Preferably, the rotating rod is fixedly provided with a limiting block at the second rotating shaft, and the limiting block is located in the second rotating shaft and is slidably connected with the second rotating shaft.
[0012] Preferably, the water inlet pipe and the water outlet pipe are fixedly provided with connecting flanges on both sides.
[0013] The beneficial effects of the present application are: multiple filter layers are provided, so that the coarse water is filtered more thoroughly, the inner wall of the filter layer is cleaned while the brush plate is driven to rotate along with the water flow, and the cleaned dirt is scraped off and accumulated to a specified position, facilitating cleaning, and the specific implementation is as follows:
[0014] (1) The first filter layer is provided, the water inlet pipe and the water outlet pipe are connected with the pipeline through the connecting flange, water is started to be pumped into the filter cylinder, coarse water enters from the water inlet pipe, larger blockages are blocked by the first filter layer, when the coarse water enters the inner filter chamber, the coarse water is filtered again by the second filter layer, medium blockages such as sand are filtered out, after the coarse water is filtered by the second filter layer, the coarse water enters the outer filter chamber, the coarse water is filtered again by the third filter layer, small blockages are filtered out, and the filtered coarse water is discharged through the water outlet pipe, realizing layered filtering.
[0015] (2) The rotating rod is provided, after the water flow passes through the second filter layer, the water flow impacts the propeller when flowing through the outer filter chamber, the propeller is rotated under the impact of the water flow, the rotating rod is rotated, the first brush plate is rotated by the rotating rod, the accumulated material on the first filter layer is brushed off, the second brush plate is rotated by the rotating rod, the first scraper is moved by the second brush plate, when the first scraper rotates with the second brush plate, the first scraper is clamped into the gap of the second filter layer, the accumulated material is extruded out, and the arc surface on the first scraper is attached to the blocking column of the second filter layer, the agglomerates on the second filter layer are scraped off, when the first scraper rolls with the second filter layer, the second brush plate moves in and out in the retraction groove along with the movement of the first scraper, so that the second brush plate can rotate freely and the first scraper is pushed on the second filter layer, the third brush plate is rotated by the rotating rod, and the third filter layer is brushed.
[0016] (3) The first scraper is provided, when the second scraper rotates by the rotating rod, the second scraper is attached to the inner wall of the return pipe and rotates, the accumulated material in the return pipe is pushed into the first drain opening, so that it falls into the accumulation bin, the third scraper is rotated by the rotating rod, the inner wall of the connecting pipe is cleaned, and the accumulated material is pushed into the second drain opening to prevent accumulation and scaling.
[0017] (4) The accumulation bin is provided, after being used for a period of time, the accumulation bin is opened by rotating the pollution cover at the bottom, the accumulation bin is cleaned, the barrel cover is released by rotating the gland, the filter cylinder is overhauled, when installing, the barrel cover is placed on the filter cylinder, the gland is rotated, the inclined surface of the gland is in contact with the barrel cover, and the barrel cover is pressed tightly by rotating the gland in the rotating process. BRIEF DESCRIPTION OF DRAWINGS
[0018] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application together with the embodiments thereof, and explain the present application, and do not constitute a limitation of the present application. In the drawings:
[0019] Figure 1 is a schematic view of the whole application;
[0020] Figure 2 is a semi-sectional view of the application;
[0021] Figure 3 is an enlarged view of A of the application;
[0022] Figure 4 is an enlarged view of B of the application;
[0023] Figure 5 is a sectional view of B of the application;
[0024] Figure 6 is an enlarged view of C of the application;
[0025] Figure 7 is a sectional view of the return pipe of the application;
[0026] In the figure, the following are marked: 1 filter cartridge, 2 barrel cover, 3 water inlet pipe, 4 water outlet pipe, 5 accumulation bin, 6 side edge rotating shaft, 7 pressing cover, 8 first filter layer, 9 first brush plate, 10 inner filter chamber, 11 first rotating shaft, 12 rotating rod, 13 second rotating shaft, 14 second filter layer, 15 second brush plate, 16 first scraping plate, 17 second scraping plate, 18 first discharge port, 19 outer filter chamber, 20 propeller, 21 third filter layer, 22 third rotating shaft, 23 third brush plate, 24 third scraping plate, 25 connecting pipe, 26 second discharge port, 27 retraction column, 28 retraction groove, 29 elastic pad, 30 limiting block, 31 fourth rotating shaft, 32 rotating shaft, 33 camber, 34 return pipe, 35 propeller base, 36 blowdown cover, 37 connecting flange, 38 sliding pipe. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application; obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application, and all other embodiments obtained by those skilled in the art without creative labor based on the embodiments in the present application shall fall within the scope of protection of the present application.
[0028] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0029] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood broadly, for example, "connected" can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or can be connected internally between two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.
[0030] The structural features of the present application will be described in detail in conjunction with the accompanying drawings.
[0031] Referring to Figures 1-2 A ship anti-fouling suction coarse water filter, comprising a filter cartridge 1, a water inlet pipe 3, a water outlet pipe 4, an inner filter chamber 10, and an outer filter chamber 19, the filter cartridge 1 is fixedly connected with the water inlet pipe 3 and the water outlet pipe 4 on both sides, the filter cartridge 1 is fixedly provided with the outer filter chamber 19, the outer filter chamber 19 is fixedly provided with the inner filter chamber 10, a sliding pipe 38 is slidably arranged in the water inlet pipe 3, the inner filter chamber 10 is maintained and repaired by disassembling the sliding pipe 38, the sliding pipe 38 is tightly connected with the inner filter chamber 10 by extending to the inner filter chamber 10, a first filter layer 8 is fixedly arranged at the opening of the sliding pipe 38, large accumulations are filtered by the first filter layer 8, a second filter layer 14 is circumferentially arranged on the side of the inner filter chamber 10, medium-sized accumulations are filtered by the second filter layer 14, the inner filter chamber 10 is fixedly connected with the outer filter chamber 19 through a backflow pipe 34 on the side close to the sliding pipe 38, a connecting pipe 25 is fixedly arranged on the side of the outer filter chamber 19 away from the backflow pipe 34, a third filter layer 21 is fixedly arranged on the side of the connecting pipe 25 close to the water outlet pipe 4, small accumulations are filtered by the third filter layer 21, and the connecting pipe 25 is fixedly connected with the water outlet pipe 4.
[0032] Referring to Figures 2-5 A rotating rod 12 is connected with the first filter layer 8 at the center point through a first rotating shaft 11, the inside of the filter cartridge 1 is cleaned by rotating the rotating rod 12, a first brush plate 9 is fixedly arranged on the outer side of the rotating rod 12, the first filter layer 8 is brushed by the first brush plate 9, the rotating rod 12 extends to the inner filter chamber 10 and is connected with the inner filter chamber 10 through a second rotating shaft 13 and penetrates the inner filter chamber 10, symmetrical recessed columns 27 are fixedly arranged on the rotating rod 12 at the second rotating shaft 13, the recessed columns 27 are arranged in the inner filter chamber 10, recessed grooves 28 are arranged in the recessed columns 27, elastic pads 29 are fixedly arranged in the recessed grooves 28, the second brush plate 15 is reset by the elastic pads 29, the second brush plate 15 is slidably arranged at the opening of the recessed groove 28, the first pipe plate 16 is moved by the second brush plate 15, a rotating shaft 32 is connected with the second brush plate 15 through a fourth rotating shaft 31 at the extension of the second filter layer 14, a first scraping plate 16 is fixedly arranged on the rotating shaft 32, and the second filter layer 14 is cleaned by the first scraping plate 16.
[0033] Referring to Figure 2 , 6 , 7, the rotating shaft 32 extends to the return pipe 34 fixedly provided with a second scraper 17, the rotating rod 12 is located in the outer filter chamber 19 and fixedly provided with a propeller base 35, the propeller base 35 is fixedly provided with a propeller 20, the rotating rod 12 is rotated by the water flow pushing the propeller 20, the rotating rod 12 extends to the third filter layer 21 and is connected thereto through a third rotating shaft 22, the rotating rod 12 is fixedly provided with a third brush plate 23 inside the third filter layer 21, the third filter layer 21 is cleaned by the third brush plate 23, the third brush plate 23 extends to the inner wall of the connecting pipe 25 and is fixedly provided with a third scraper 24, and the connecting pipe 25 is cleaned by the third scraper 24.
[0034] Referring to Figure 2 , the outer filter chamber 19 is fixedly provided with a stacking bin 5 at the bottom, the return pipe 34 is provided with a first discharge port 18 below, the first discharge port 18 is fixedly connected with the stacking bin 5, the connecting pipe 25 is provided with a second discharge port 26 below, the stacking bin 5 is threadedly connected with a pollution discharge cover 36 at the bottom, the stacking bin 5 is cleaned by opening the pollution discharge cover 36, and the water inlet pipe 3 and the water outlet pipe 4 are both fixedly provided with a connecting flange 37 at the two sides.
[0035] Referring to Figure 1 , the filter cartridge 1 is provided with an opening at the top end, the filter cartridge 1 is fixedly provided with a side edge rotating shaft 6 at the side edge, the side edge rotating shaft 6 extends to the upper side of the filter cartridge 1 and is fixedly provided with a gland 7, the filter cartridge 1 is detachably provided with a barrel cover 2 at the opening, and the bottom of the gland 7 is provided with an inclined sliding surface, and the barrel cover 2 is fixed or released by rotating the gland 7.
[0036] Referring to Figure 2 , 5 , the first filter layer 8 is a coarse mesh screen, the second filter layer 14 is a column closely arranged in a semicircular shape, the third filter layer 21 is a fine mesh screen, the first scraper 16 is attached to and slidably connected with the inner wall of the return pipe 34, the second scraper 17 is attached to and slidably connected with the inner wall of the connecting pipe 25, and the first brush plate 9 and the third brush plate 23 are fixedly provided with brushes close to the first filter layer 8 and the third filter layer 21.
[0037] Referring to Figure 5 , the first scraper 16 is provided with an arc surface 33 at the four side edges, the shape of the arc surface 33 is slidably attached to the column shape of the second filter layer 14, and the interval distance between the protruding part of the first scraper 16 and the second filter layer 14 is matched.
[0038] Referring to Figure 3 , the rotating rod 12 is fixedly provided with a limiting block 30 at the second rotating shaft 13, the limiting block 30 is located in the second rotating shaft 13 and is slidably connected therewith, and the limiting block 30 prevents the rotating rod 12 from sliding.
[0039] The ship anti-fouling suction coarse water filter of the present application is provided with multiple filter layers, which makes the coarse water layered filtration more thorough, and the brush plate is driven to rotate at the same time of water flow to clean the inner wall of the filter layer, and the cleaned dirt is scraped off and accumulated to the designated position, which is convenient for cleaning and suitable for promotion.
[0040] In particular use, refer to Figures 1-2 When the water inlet pipe 3 and the water outlet pipe 4 are connected with the pipeline through the connecting flange 37, water is started to be pumped into the filter cartridge 1, the coarse water enters from the water inlet pipe 3, the larger blockage is blocked by the first filter layer 8, when the coarse water enters into the inner filter chamber 10, the coarse water is filtered again by the second filter layer 14 to filter out the medium-sized blockage such as sand, after the coarse water is filtered by the second filter layer 14, it enters into the outer filter chamber 19, and the coarse water is filtered again by the third filter layer 21 to filter out the tiny blockage, and the filtered coarse water is discharged through the water outlet pipe 4.
[0041] Refer to Figures 2-6 When the water flow passes through the second filter layer 14, it impacts the propeller 20 when flowing through the outer filter chamber 19, the propeller 20 is rotated under the impact of the water flow, the rotating rod 12 is driven to rotate, the first brush plate 9 is driven to rotate by the rotating rod 12, the accumulated material on the first filter layer 8 is brushed off, the second brush plate 15 is driven to rotate by the rotating rod 12, which drives the first scraper 16 to move, when the first scraper 16 rotates with the second brush plate 15, the first scraper 16 is clamped into the gap of the second filter layer 14 to extrude the accumulated material, and the arc surface 33 on the first scraper 16 is fitted with the blocking column of the second filter layer 14 to scrape off the agglomerate on the second filter layer 14, when the first scraper 16 rolls with the second filter layer 14, the second brush plate 15 moves in and out in the retraction groove 28 with the movement of the first scraper 16, so that the second brush plate 15 can rotate freely and the first scraper 16 is pushed on the second filter layer 14, the third brush plate 23 is driven to rotate by the rotating rod 12 to brush the third filter layer 21.
[0042] Refer to Figure 2 , 6 ,7, when the second scraper 17 rotates with the rotating rod 12, the second scraper 17 is fitted with the inner wall of the return pipe 34 and rotates to push the accumulated material in the return pipe 34 into the first drain 18 to fall into the accumulation bin 5, the third scraper 24 is driven to rotate by the rotating rod 12 to clean the inner wall of the connecting pipe 25 and push the accumulated material into the second drain 26.
[0043] Refer to Figures 1-2After using for a period of time, the accumulated bin 5 is opened by rotating the bottom pollution cover 36, the accumulated bin 5 is cleaned, the barrel cover 2 is released by rotating the gland 7, the filter cartridge 1 is overhauled, when installing, the barrel cover 2 is placed on the filter cartridge 1, the gland 7 is rotated, the inclined surface of the gland 7 contacts with the barrel cover 2, the barrel cover 2 is pressed tightly by the gland 7 in the process of rotating.
[0044] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that the technical solutions described in the foregoing embodiments can be modified or some technical features can be replaced by equivalent features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A ship anti-fouling suction coarse water filter, comprising a filter cartridge (1), a water inlet pipe (3), a water outlet pipe (4), an inner filter chamber (10), an outer filter chamber (19), characterized in that, The filter cartridge (1) is fixedly connected with the water inlet pipe (3) and the water outlet pipe (4) on both sides, an outer filter chamber (19) is fixedly arranged in the filter cartridge (1), an inner filter chamber (10) is fixedly arranged in the outer filter chamber (19), a sliding pipe (38) is slidably arranged in the water inlet pipe (3), the sliding pipe (38) extends to the inner filter chamber (10) and is tightly connected therewith, a first filter layer (8) is fixedly arranged at the opening of the sliding pipe (38), a second filter layer (14) is arranged around the side of the inner filter chamber (10), the inner filter chamber (10) is fixedly connected with the outer filter chamber (19) through a backflow pipe (34) on the side close to the sliding pipe (38), a connecting pipe (25) is fixedly arranged on the side of the outer filter chamber (19) away from the backflow pipe (34), a third filter layer (21) is fixedly arranged on the side of the connecting pipe (25) close to the water outlet pipe (4), and the connecting pipe (25) is fixedly connected with the water outlet pipe (4); The first filter layer (8) is a coarse mesh screen, the second filter layer (14) is a plurality of semicircular columns arranged in close rows, and the third filter layer (21) is a fine mesh screen; A rotating rod (12) is connected to the center point of the first filter layer (8) through a first rotating shaft (11), a first brush plate (9) is fixedly arranged outside the rotating rod (12) on the side of the first filter layer (8), the rotating rod (12) extends to the inner filter chamber (10) and is connected with the inner filter chamber (10) through a second rotating shaft (13) and penetrates the inner filter chamber (10), symmetrical recessed columns (27) are fixedly arranged on the rotating rod (12) on the side of the second rotating shaft (13), the recessed columns (27) are arranged in the inner filter chamber (10), a recessed groove (28) is arranged in the recessed column (27), an elastic pad (29) is fixedly arranged in the recessed groove (28), a second brush plate (15) is slidably arranged at the opening of the recessed groove (28), a rotating shaft (32) is connected to the second brush plate (15) extending to the second filter layer (14) through a fourth rotating shaft (31), a first scraping plate (16) is fixedly arranged on the rotating shaft (32), a second scraping plate (17) is fixedly arranged on the rotating shaft (32) extending to the backflow pipe (34), a propeller base (35) is fixedly arranged in the outer filter chamber (19) on the rotating rod (12), a propeller (20) is fixedly arranged on the propeller base (35), the rotating rod (12) extends to the third filter layer (21) and is connected with the third filter layer (21) through a third rotating shaft (22), a third brush plate (23) is fixedly arranged on the inner side of the rotating rod (12) in the third filter layer (21), and a third scraping plate (24) is fixedly arranged on the inner wall of the connecting pipe (25) extending to the third brush plate (23); An accumulation bin (5) is fixedly arranged at the bottom of the outer filter chamber (19), a first drain port (18) is arranged below the backflow pipe (34), the first drain port (18) is fixedly connected with the accumulation bin (5), a second drain port (26) is arranged below the connecting pipe (25), and a pollution discharge cover (36) is threadedly connected to the bottom of the accumulation bin (5); The first scraper (16) is attached to the inner wall of the return pipe (34) and is in sliding connection with the same, the second scraper (17) is attached to the inner wall of the connecting pipe (25) and is in sliding connection with the same, the first brush plate (9) and the third brush plate (23) are fixedly provided with brushes near the first filter layer (8) and the third filter layer (21). The first scraper (16) is provided with arc surfaces (33) at four side edges, the shape of the arc surfaces (33) is in sliding attachment with the columnar shape of the second filter layer (14), and the interval distance between the protruding part of the first scraper (16) and the second filter layer (14) is matched.
2. A scale-preventing intake coarse water filter for a marine vessel according to claim 1, characterized in that The filter cartridge (1) is provided with an opening at the top end, a side edge rotating shaft (6) is fixedly arranged at the side edge of the filter cartridge (1), the side edge rotating shaft (6) extends to the upper portion of the filter cartridge (1) and is fixedly provided with a gland (7), a barrel cover (2) is detachably arranged at the opening of the filter cartridge (1), and the bottom of the gland (7) is provided with an inclined sliding surface.
3. A scale-preventing suction coarse water filter for a marine vessel according to claim 1, characterized in that, The rotating rod (12) is fixedly provided with a limiting block (30) at the second rotating shaft (13), and the limiting block (30) is located in the second rotating shaft (13) and is in sliding connection with the same.
4. A scale-preventing suction coarse water filter for a ship according to claim 1, characterized in that, The water inlet pipe (3) and the water outlet pipe (4) are fixedly provided with connecting flanges (37) at two sides.
Citation Information
Patent Citations
Efficient seawater filter
CN211676572U
Filtering device of water supply and drainage pipeline
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