Ship sea chest filtering type protective cover

Abstract

The utility model relates to a ship sea chest filtering type protective cover. Comprising two first sliding rails fixedly installed on a side board of a ship, the two first sliding rails are located above and below a sea chest of the ship respectively, a flat rectangular frame is further included, an upper set of first sliding blocks and a lower set of first sliding blocks are installed on the inner side of the frame, the first sliding blocks move along the first sliding rails, and a detachable filter screen is installed on the outer side of the frame. Side sealing plates are installed on the periphery of the frame, and a fixing assembly of the frame is further installed on the first sliding rail. Second sliding rails with second sliding blocks are installed on the upper sides and the lower sides of the two first sliding rails correspondingly, a door-shaped frame is installed between the two second sliding blocks, a cross beam of the door-shaped frame is located on the outer side of the filter screen, and a scraping plate acting on the filter screen is installed on the inner side of the cross beam. And the traction assembly is used for dragging the door-shaped frame to translate along the second sliding rail. The sea chest has a better filtering function on sundries in seawater so as to effectively prevent the sundries from entering the sea chest, when the problem that sucked water flow is reduced due to the blockage problem occurs, the blockage problem can be solved without stopping a ship and halting, and the passing ability of the seawater is quickly recovered.

Description

Technical Field

[0001] The utility model belongs to the technical field of ship facilities, in particular to a filtering protective cover for a ship's seabed door. Background Art

[0002] A ship's subsea gate is typically located on the side of the vessel. A seawater main is installed within the gate, through which seawater is pumped for firefighting, cooling, and ballast. To prevent the ingestion of debris during the intake process, the gate is typically equipped with an openable grille to filter out debris. However, the grilles typically have large gaps between the gates, which can still cause debris to be drawn into the gate and clog the seawater main. While reducing the gaps / apertures of the gate grilles can improve their ability to filter debris, these grilles are also more susceptible to clogging by debris, such as jellyfish, during the intake process. Furthermore, the gate maintains a negative pressure during this process, making blockage difficult to resolve. A blocked gate hinders seawater intake, reducing intake flow and leading to water shortages. This, in particular, can lead to overheating of the ship's machinery and equipment, potentially causing ship failures.

[0003] Clearing blockages on the seabed gate grille while a vessel is underway or under construction is obviously not easy. The vessel underway and the seawater pump continuously drawing in seawater (creating a negative pressure environment at the seabed gate) pose a significant safety hazard to personnel approaching the seabed gate grille. To address severe blockages, the vessel must be stopped, adversely impacting navigation and construction. Therefore, it is necessary to develop a filter-type protective cover device for a vessel's seabed gate to address the aforementioned technical issues. Utility Model Content

[0004] The purpose of the utility model is to provide a filtering protective cover for the submarine door of a ship, which provides a better filtering function for debris in the seawater to effectively prevent the debris from entering the interior of the submarine door. When the problem of reduced suction water flow due to blockage occurs, the blockage problem can be solved without stopping the ship and the permeability of seawater can be quickly restored.

[0005] The technical solution adopted by the utility model is: a filter-type protective cover for the seabed door of a ship, comprising two first slide rails installed and fixed on the side of the ship, the two first slide rails are respectively located above and below the seabed door of the ship, and also comprising a flat rectangular frame, two sets of upper and lower first sliders are installed on the inner side of the frame and the first sliders move along the first slide rails, a detachable filter screen is installed on the outer side of the frame, side sealing plates are installed around the frame, and a fixing component of the frame is also installed on the first slide rail; second slide rails with second sliders are respectively installed on the upper and lower sides of the two first slide rails, a door frame is installed between the two second sliders, the crossbeam of the door frame is located on the outer side of the filter screen and a scraper acting on the filter screen is installed on the inner side of the crossbeam; and also comprising a traction component for traction of the door frame for translational movement along the second slide rail.

[0006] Preferably, a plurality of mounting plates with connection holes are provided on the outer edge of the frame, and the edges of the filter screen are fixedly connected to the mounting plates by bolts.

[0007] Preferably, the side sealing plates are metal plates and are welded and mounted on the sides of the frame.

[0008] Preferably, the fixing assembly includes a first anti-slip end block installed at both ends of the first slide rail, a transversely penetrating threaded hole is provided in the middle of the two upper first anti-slip end blocks and a fixing screw is provided in the threaded hole, and a threaded hole is provided in the middle of the first sliding block located above. When the frame is translated to the end of the first slide rail, the fixing screw is used to fix the first anti-slip end block to the first sliding block on this side.

[0009] Preferably, second anti-slip end blocks are installed at both ends of the second slide rail.

[0010] Preferably, a rubber strip is installed on the inner edge of the frame, and the inner edge of the rubber strip abuts against the side of the ship.

[0011] Preferably, the scraper is a hard rubber plate, which is fixedly connected to the crossbeam of the portal frame by bolts.

[0012] Preferably, the traction assembly includes a driving sheave, a driven sheave and a steering sheave located between the two installed on the side of the ship. The driving sheave is close to the ship deck. A steel wire rope is installed between the driving sheave and the driven sheave and the steel wire rope is passed around the steering sheave. The second slider located above is fixedly connected to the steel wire rope.

[0013] The advantages and positive effects of the utility model are:

[0014] The present invention provides a filter-type protective cover for a ship's submarine door. By installing a filter screen with a smaller gap / aperture outside the existing filter grille on the ship's submarine door, it provides a better filtering function for the inhaled seawater, can further filter and intercept debris in the seawater to prevent it from entering the interior of the submarine door, and has a better anti-blocking pipe capability. Because the frame and filter screen can move horizontally along the direction defined by the first slide rail, the frame and filter screen can be moved away from the position of the ship's submarine door by sliding operation when necessary, so as not to affect the opening of the submarine door grille and the maintenance of the submarine door during ship maintenance. By making the filter screen and the frame detachable, the filter screen can be replaced according to the distribution of debris in the water when the ship is sailing and constructing in different sea areas.

[0015] By setting up a portal frame that is pulled left and right by a traction assembly and installing a scraper between the portal frame's crossbeam and the filter screen, during the ship's navigation and construction process, when a decrease in the flow rate of inhaled seawater is observed (which means that the filter screen is clogged), the portal frame and the scraper can be pulled back and forth to scrape the outside of the filter screen, forcing the debris clogged in the filter screen to separate from the filter screen, effectively solving the blockage problem. The aforementioned filter screen clearing operation can be performed at any time without stopping the ship or the equipment, and the permeability of seawater can be quickly restored. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure at the AA position;

[0018] Figure 3 It is a three-dimensional structural diagram of the main part of the utility model.

[0019] In the picture:

[0020] 1. Driving sheave; 2. Steering sheave; 3. Second slider; 4. Steel wire rope; 5. Second slide rail; 6. Driven sheave; 7. Second anti-slip end block; 8. First slider; 9. First slide rail; 10. Fixing screw; 11. First anti-slip end block; 12. Frame; 13. Door frame; 14. Filter screen; 15. Ship's seabed door; 16. Rubber strip; 17. Scraper; 18. Side sealing plate. DETAILED DESCRIPTION

[0021] In order to further understand the content, features and effects of the present invention, the following embodiments are given to illustrate in detail.

[0022] See Figure 1 、 Figure 2 and Figure 3The ship's seabed door filtering protective cover of the present invention includes two first slide rails 9 installed and fixed on the ship's side. The two first slide rails 9 are respectively located above and below the ship's seabed door 15. The two first slide rails 9 are straight slide rails and are installed and fixed on the ship's side by welding. Considering that the ship's side may have a certain curvature, a pad can be welded between the first slide rail 9 and the ship's side during welding installation.

[0023] The device further comprises a flat rectangular frame 12, on the inner side of which are mounted two upper and lower sets of first sliders 8, which move along first slide rails 9. A detachable filter screen 14 is mounted on the outer side of the frame 12, and side sealing plates 18 are mounted around the frame. The frame 12, filter screen 14, and side sealing plates 18 together constitute a filter-type protective cover structure, which can be translated left and right. As shown in the figure, when the filter-type protective cover structure moves to the right end position, the ship's seabed door 15 is covered inside. When the filter-type protective cover structure moves to the left end position, the ship's seabed door 15 is completely exposed.

[0024] The frame 12 is welded from steel pipe profiles to ensure overall structural strength. In this embodiment, multiple mounting plates with connection holes are provided on the outer edges of the frame 12. The edges of the filter screen 14 are bolted to each mounting plate, allowing for convenient assembly and replacement of the filter screen 14. Generally, while ensuring sufficient filtration and retention of debris in seawater, the larger the gap / aperture of the filter screen 14, the less resistance it presents to the seawater. However, the gap / aperture of the filter screen 14 should still be significantly smaller than the gap / aperture of the filter grille on the current ship's seafloor gate 15 to provide the desired debris retention.

[0025] In this embodiment, the side sealing plates 18 are metal plates welded to the sides of the frame 12. In this embodiment, rubber strips 16 are mounted on the inner edges of the frame 12, with the inner edges of the rubber strips 16 resting against the ship's side. Therefore, when the ship's seabed door 15 draws in seawater, it primarily passes through the filter screen 14, where it is filtered before entering the inner space.

[0026] A fixing assembly for the frame 12 is also mounted on the first slide rail 9. The fixing assembly is provided to fix the frame 12 and its filter screen 14 in position when they are moved to the left or right end, preventing them from shifting. For example, when a ship is docked for maintenance, the water level typically drops to a point where the ship's sides are completely exposed. At this point, the frame 12 and filter screen 14 can be moved to the left end and fixed in position using the fixing assembly, fully exposing the ship's seabed door 15. After the maintenance is completed and before sailing, the frame 12 and filter screen 14 can be moved to the right end and fixed in position using the fixing assembly. At this point, the ship's seabed door 15 is located inside the filter screen 14.

[0027] In this embodiment, the fixing assembly includes first anti-slip end blocks 11 installed at both ends of the first slide rail 9. A transverse threaded hole is provided in the middle of the two upper first anti-slip end blocks 11, and a fixing screw 10 is provided in the threaded hole. A threaded hole is provided in the middle of the upper first slider 8. When the frame 12 is translated to the end of the first slide rail 9, the fixing screw 10 is used to fix the first anti-slip end block 11 to the first slider 8 on this side. The first anti-slip end block 11 also provides an anti-slip function to prevent the first slider 8 from falling out of the end of the first slide rail 9.

[0028] Second slide rails 5 with second sliders 3 are respectively installed on the upper and lower sides of the two first slide rails 9. Similarly, in this embodiment, second anti-slip end blocks 7 are installed at both ends of the second slide rails 5. The second anti-slip end blocks 7 are used to prevent the second slider 3 from slipping out of the end of the second slide rail 5.

[0029] A portal frame 13 is mounted between the two second sliders 3. The crossbeam of portal frame 13 is located outside the filter screen 14, and a scraper 17 is mounted inside the crossbeam 14 to act on the filter screen 14. When portal frame 13 moves laterally, scraper 17 translates outside the filter screen 14, scraping debris from the filter screen 14 and eliminating clogging. In this embodiment, scraper 17 is a hard rubber sheet, fixed to the crossbeam of portal frame 13 with bolts. Scraper 17 is replaced when excessive wear occurs.

[0030] It also includes a traction component that allows the traction portal frame 13 to move translationally along the second slide rail 5.

[0031] In this embodiment, the traction assembly includes a driving sheave 1 installed on the side of the ship, a driven sheave 6 and a steering sheave 2 located therebetween. The driving sheave 6 is close to the ship deck, which makes it convenient to operate the driving sheave 6 manually or mechanically (such as using a hydraulic pump, etc.). A wire rope 4 is installed between the driving sheave 1 and the driven sheave 6, and the wire rope 4 passes around the steering sheave 2. The second slider 3 located above is fixedly connected to the wire rope 4. By driving the driving sheave 1 to rotate forward or reverse, the wire rope 4 drives the second slider 3 to move left and right along the second slide rail 5, and then the portal frame 13 and its scraper 17 move left and right.

[0032] As shown in the figure, the wire rope 4 is located above the second slide rail 5 and has a portion parallel to the second slide rail 5, so that when the wire rope 4 is driven to move by the active pulley 1, the second slider 3 above is pulled in the horizontal direction, and the portal frame 13 and its scraper 17 are displaced.

[0033] Operation method:

[0034] As mentioned above, the assembly consisting of the frame 12 and its filter screen 14 is usually moved when the ship is in the dock for inspection and maintenance. When the ship's seabed door 15 needs to be exposed, the aforementioned assembly is moved to the left end and fixed. After the inspection and maintenance of the ship's seabed door 15 and the facilities inside the door are completed, the aforementioned assembly is moved to the right end and fixed. At this time, the ship's seabed door 15 is completely enclosed inside the filter screen 14;

[0035] When the seawater pump in the ship's seabed gate 15 is running, the seawater main pipe draws in seawater, and this part of the seawater passes through the filter screen 14 and the existing filter grid in turn; when the ship is sailing or under construction, if the flow rate of the inhaled seawater is observed to decrease through the instrument, it means that the seawater suction resistance has increased and the filter screen 14 has a blockage problem. At this time, manual or mechanical methods are used to drive the active sheave 1 to rotate forward and reverse, drive the wire rope 4 to move forward and reverse, and accordingly the door frame 13 and its scraper 17 are translated left and right. When the scraper 17 passes through the outside of the filter screen 14, it scrapes off the blockage on the filter screen 14 and, under the action of the water flow, the scraped debris is moved away from the area where the ship's seabed gate 15 is located.

Claims

1. A filter-type protective cover for a ship's submarine door, characterized by: The invention comprises two first slide rails (9) fixed on the side of a ship, the two first slide rails (9) being respectively located above and below a sea bottom door (15) of the ship, and a flat rectangular frame (12), wherein two sets of upper and lower first slide blocks (8) are installed on the inner side of the frame (12), and the first slide blocks (8) move along the first slide rails (9), a detachable filter screen (14) is installed on the outer side of the frame (12), and side sealing plates (18) are installed around the frame (12). A fixing assembly of a frame (12) is also installed on the rail (9); second slide rails (5) with second sliders (3) are respectively installed on the upper and lower sides of the two first slide rails (9); a door frame (13) is installed between the two second sliders (3); a crossbeam of the door frame (13) is located outside the filter screen (14) and a scraper (17) acting on the filter screen (14) is installed on the inner side of the crossbeam; and a traction assembly is also included for traction of the door frame (13) to move translationally along the second slide rail (5).

2. The filter-type protective cover for a ship's submarine door according to claim 1, characterized in that: A plurality of mounting plates with connection holes are provided on the outer edge of the frame (12), and the edges of the filter screen (14) are fixedly connected to the mounting plates by bolts.

3. The filter-type protective cover for a ship's submarine door as claimed in claim 2, characterized in that: The side sealing plates (18) are metal plates and are welded and mounted on the sides of the frame (12).

4. The filter-type protective cover for a ship's seabed door as claimed in claim 3, characterized in that: The fixing assembly includes first anti-slip end blocks (11) installed at both ends of the first slide rail (9), a transversely penetrating threaded hole is provided in the middle of the two upper first anti-slip end blocks (11) and a fixing screw (10) is provided in the threaded hole, and a threaded hole is provided in the middle of the first sliding block (8) located above. When the frame (12) is translated to the end of the first slide rail (9), the fixing screw (10) is used to fix the first anti-slip end block (11) to the first sliding block (8) on this side.

5. The filter-type protective cover for a ship's seabed door as claimed in claim 4, characterized in that: Second anti-slip end blocks (7) are installed at both ends of the second slide rail (5).

6. The filter-type protective cover for a ship's seabed door according to claim 5, characterized in that: A rubber strip (16) is installed on the inner edge of the frame (12), and the inner edge of the rubber strip (16) is against the side of the ship.

7. The filter-type protective cover for a ship's seabed door according to claim 6, characterized in that: The scraper (17) is a hard rubber plate and is fixedly connected with the crossbeam of the portal frame (13) by bolts.

8. The filtering protective cover for a ship's seabed door according to any one of claims 1 to 7, characterized in that: The traction assembly comprises a driving sheave (1) installed on the side of a ship, a driven sheave (6), and a steering sheave (2) located therebetween. The driving sheave (1) is close to the deck of the ship. A steel wire rope (4) is installed between the driving sheave (1) and the driven sheave (6), and the steel wire rope (4) passes around the steering sheave (2). A second slider (3) located above is fixedly connected to the steel wire rope (4).

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