An arc-shaped scraper for removing debris from a rake suction vessel sea chest screen

Abstract

This utility model relates to the field of scraper technology, specifically an arc-shaped scraper for removing debris from the filter screen of a trailing suction hopper dredger. It includes a long rod, one end of which is fixedly connected to a connecting plate. A main scraper is fixedly connected to the surface of the connecting plate, and several secondary scrapers are slidably connected to the surface of the main scraper. One end of each of the secondary scrapers is fixedly connected to a connecting plate, and an extension rod is fixedly connected to the surface of the connecting plate. One end of the extension rod is fixedly connected to a threaded rod. This utility model, by setting a main scraper and several secondary scrapers, allows for adjustment of the position of the secondary scrapers when cleaning dense, agglomerated impurities from the surface of the filter screen of a trailing suction hopper dredger. This creates multiple notches at the blade edge of the main scraper, reducing the contact area between the main scraper and the agglomerated impurities, increasing the pressure of the main scraper on the agglomerated impurities, and facilitating the breaking up of dense agglomerated impurities, thus improving the practicality of the arc-shaped scraper.

Description

Technical Field

[0001] This utility model relates to the field of scraper technology, and in particular to an arc-shaped scraper for removing debris from the filter screen of the seabed gate of a trailing suction hopper vessel. Background Technology

[0002] The seagate is the channel through which the trailing suction hopper dredger draws seawater. A filter screen is installed on the seagate to filter out debris mixed in with the seawater, such as household garbage, planktonic marine organisms, and silt. To ensure that seawater can flow through the filter screen normally, sailors regularly clean the filter screen with an arc-shaped scraper.

[0003] A patent document with authorization publication number CN222022852U discloses an arc-shaped scraper for removing debris from the filter screen of a trailing suction hopper vessel. The scraper includes a retractable adjustable handle and a scraper, as well as a movable component and a limiting component. The movable component is positioned between the adjustable handle and the scraper, allowing the scraper to rotate freely relative to the adjustable handle. The limiting component is positioned between the adjustable handle and the movable component, used to position the scraper after the angle has been adjusted. This patent allows for adjustment of the scraper's length and angle, enabling the scraper to better conform to the filter screen, thus facilitating the thorough cleaning of marine life or debris adhering to the filter screen.

[0004] The above-mentioned and existing technologies have the following drawbacks: When the trailing suction hopper dredge pumps seawater through the seabed gate, the seawater flows rapidly. When impurities in the seawater come into contact with the filter screen, they will be impacted with great force, causing the impurities to be squeezed together and stick tightly to the surface of the filter screen. When the pumping of seawater is stopped and the impurities are cleaned with an arc-shaped scraper, the fixed structure of the arc-shaped scraper blade means that adjusting the length and angle alone cannot effectively reduce the contact area. It is difficult to scrape the densely clumped impurities and make them fall off, which reduces the practicality of the arc-shaped scraper.

[0005] Therefore, an arc-shaped scraper is proposed for removing debris from the filter screen of the seabed gate of a trailing suction hopper vessel. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of the fixed structure of the arc-shaped scraper blade, which makes it difficult to effectively reduce the contact area by simply adjusting the length and angle, thus making it difficult to scrape and remove densely packed impurities. Therefore, this invention proposes an arc-shaped scraper for removing debris from the filter screen of the seabed gate of a trailing suction hopper vessel.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: an arc-shaped scraper for removing debris from the filter screen of a trailing suction hopper vessel, comprising a long rod, one end of which is fixedly connected to a connecting plate, a main scraper fixedly connected to the surface of the connecting plate, a plurality of secondary scrapers slidably connected to the surface of the main scraper, one end of the plurality of secondary scrapers being fixedly connected to a connecting plate, an extension rod fixedly connected to the surface of the connecting plate, a threaded rod fixedly connected to one end of the extension rod, the threaded rod penetrating the connecting plate, and a threaded sleeve rotatably connected to the surface of the connecting plate, the threaded sleeve being threadedly connected to the threaded rod.

[0008] The effect achieved by the above components is as follows: by setting a main scraper and several auxiliary scrapers, when it is necessary to clean the dense agglomerated impurities on the surface of the seabed gate filter screen of the trailing suction hopper, the position of the auxiliary scrapers can be adjusted to create multiple notches at the blade of the main scraper. By reducing the contact area between the main scraper and the agglomerated impurities, the pressure of the main scraper on the agglomerated ...

[0009] Preferably, the outer circumferential surface of the threaded sleeve is movably fitted with a retaining frame, and the outer circumferential surface of the threaded sleeve is fixedly connected with a protrusion that matches the retaining frame.

[0010] The effect achieved by the above components is that after the clip frame is placed on the surface of the protrusion, rotating the clip frame will cause the threaded sleeve to rotate due to the engagement between the clip frame and the protrusion.

[0011] Preferably, a retaining ring is fixedly connected to the outer circumferential surface of the threaded sleeve.

[0012] The effect achieved by the above components is that the retaining ring can prevent the retaining frame from falling off the outer circumference of the threaded sleeve.

[0013] Preferably, a folded tube is fixedly connected to the circumferential surface of the extension rod, one end of the folded tube is fixedly connected to the connecting plate, and the threaded rod is located inside the folded tube.

[0014] The effect achieved by the above components is that the folded tube can block the threaded rod protruding from the threaded sleeve, preventing foreign objects from causing the threaded rod to jam.

[0015] Preferably, the long rod has two mounting sleeves on its circumferential surface, a flexible sleeve is fixedly connected to the outer circumferential surface of the mounting sleeve, a pin slides through the mounting sleeve, and the surface of the long rod has several insertion holes that are adapted to the pin.

[0016] The aforementioned components achieve the following effect: by setting up an installation sleeve, a flexible sleeve, a pin, and several holes, the position of the installation sleeve can be adjusted according to the size of the seaman's hand and gripping habits, thereby facilitating the seaman's operation of the long rod to move the main scraper and the auxiliary scraper to clean the filter screen of the trailing suction hopper's seabed door.

[0017] Preferably, one end of the pin is fixedly connected to a strong magnetic plate, and the mounting sleeve is made of galvanized iron.

[0018] The effect achieved by the above components is that the strong magnetic plate will adhere to the outer circumference of the mounting sleeve, preventing the pin from accidentally falling off.

[0019] Preferably, a pull ring is fixedly connected to the surface of the strong magnetic plate.

[0020] The effect achieved by the above components is that by setting a pull ring, the strong magnetic plate can be easily pulled to detach it from the mounting sleeve.

[0021] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0022] 1. In this utility model, by setting a main scraper and several auxiliary scrapers, when it is necessary to clean the dense agglomerated impurities on the surface of the seabed gate filter screen of the trailing suction hopper, the position of the auxiliary scrapers can be adjusted to create multiple notches at the blade of the main scraper. By reducing the contact area between the main scraper and the agglomerated impurities, the pressure of the main scraper on the agglomerated impurities is increased, making it easier to scrape the dense agglomerated impurities and improving the practicality of the arc-shaped scraper.

[0023] 2. In this utility model, by setting an installation sleeve, a flexible sleeve, a pin, and several holes, the position of the installation sleeve can be adjusted according to the size of the seaman's hand and gripping habits, thereby facilitating the seaman's operation of the long rod to move the main scraper and the auxiliary scraper to clean the filter screen of the trailing suction hopper ship's seabed door. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a partial structural diagram of the long rod of this utility model;

[0026] Figure 3 This is a partial disassembled structural diagram of the long rod of this utility model;

[0027] Figure 4 This is a partial structural diagram of the connecting plate of this utility model;

[0028] Figure 5 This is a partial disassembled structural diagram of the connecting plate of this utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the mounting sleeve of this utility model.

[0030] Legend: 1. Long rod; 2. Connecting plate; 3. Main scraper; 4. Secondary scraper; 5. Connecting plate; 6. Threaded rod; 7. Threaded sleeve; 8. Extension rod; 9. Frame; 10. Protrusion; 11. Retaining ring; 12. Folded tube; 13. Mounting sleeve; 14. Flexible sleeve; 15. Pin; 16. Insertion hole; 17. Strong magnetic plate; 18. Pull ring. Detailed Implementation

[0031] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0032] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0033] like Figures 1-6 As shown, this utility model provides an arc-shaped scraper for removing debris from the filter screen of a trailing suction hopper dredger. It includes a long rod 1, with a connecting plate 2 fixedly connected to one end. A main scraper 3 is fixedly connected to the surface of the connecting plate 2. Several secondary scrapers 4 are slidably connected to the surface of the main scraper 3. A connecting plate 5 is fixedly connected to one end of each secondary scraper 4. An extension rod 8 is fixedly connected to the surface of the connecting plate 2. A threaded rod 6 is fixedly connected to one end of the extension rod 8, penetrating the connecting plate 5. A threaded sleeve 7 is rotatably connected to the surface of the connecting plate 5, and the threaded sleeve 7 is threadedly connected to the threaded rod 6. By setting the main scraper 3 and several secondary scrapers 4, when it is necessary to clean dense agglomerated impurities on the surface of the filter screen of a trailing suction hopper dredger, the position of the secondary scrapers 4 can be adjusted to create multiple notches at the blade of the main scraper 3. By reducing the contact area between the main scraper 3 and the agglomerated impurities, the pressure of the main scraper 3 on the agglomerated impurities is increased, making it easier to scrape the dense agglomerated impurities and improving the practicality of the arc-shaped scraper.

[0034] like Figures 1-5 As shown, a retaining frame 9 is movably fitted on the outer circumferential surface of the threaded sleeve 7. A protrusion 10 that matches the retaining frame 9 is fixedly connected to the outer circumferential surface of the threaded sleeve 7. After the retaining frame 9 is fitted onto the surface of the protrusion 10, rotating the retaining frame 9 will cause the threaded sleeve 7 to rotate due to the cooperation between the retaining frame 9 and the protrusion 10. A retaining ring 11 is fixedly connected to the outer circumferential surface of the threaded sleeve 7. The retaining ring 11 can prevent the retaining frame 9 from falling off the outer circumferential surface of the threaded sleeve 7. A folding tube 12 is fixedly connected to the circumferential surface of the extension rod 8. One end of the folding tube 12 is fixedly connected to the connecting plate 5. The threaded rod 6 is located inside the folding tube 12. The folding tube 12 can block the threaded rod 6 extending out of the threaded sleeve 7 to prevent foreign objects from causing the threaded rod 6 to get stuck.

[0035] like Figure 1 and Figure 6 As shown, the long rod 1 has two movable mounting sleeves 13 on its circumferential surface. A flexible sleeve 14 is fixedly connected to the outer circumferential surface of the mounting sleeve 13. A pin 15 slides through the mounting sleeve 13. The surface of the long rod 1 has several insertion holes 16 that are adapted to the pin 15. By setting the mounting sleeve 13, flexible sleeve 14, pin 15 and several insertion holes 16, the position of the mounting sleeve 13 can be adjusted according to the size of the seaman's hand and gripping habits, so as to facilitate the seaman's operation of the long rod 1 to move the main scraper 3 and the auxiliary scraper 4 to clean the filter screen of the trailing suction hopper ship's seabed gate. One end of the pin 15 is fixedly connected to a strong magnetic plate 17. The mounting sleeve 13 is made of galvanized iron. The strong magnetic plate 17 will be attracted to the outer circumferential surface of the mounting sleeve 13 to prevent the pin 15 from accidentally falling off. A pull ring 18 is fixedly connected to the surface of the strong magnetic plate 17. By setting the pull ring 18, the strong magnetic plate 17 can be easily pulled to detach from the mounting sleeve 13.

[0036] Its overall working principle is as follows: When it is necessary to clean the dense agglomerated impurities on the surface of the filter screen of the underwater gate of the trailing suction hopper, first, the clamping frame 9 is placed on the surface of the protrusion 10, and then the clamping frame 9 is rotated. The clamping frame 9 and the protrusion 10 cooperate to drive the threaded sleeve 7 to rotate. When the threaded sleeve 7 rotates, it will move along the axial direction of the threaded rod 6. The threaded sleeve 7 will drive the connecting plate 5 to move. The connecting plate 5 will drive several auxiliary scrapers 4 to slide along the surface of the main scraper 3, adjusting the relative position between the auxiliary scrapers 4 and the main scraper 3. At this time, multiple notches will be generated at the cutting edge of the main scraper 3, through which... The main scraper 3 reduces the contact area between itself and the agglomerated impurities, increases the pressure of the main scraper 3 on the agglomerated lumps, and facilitates the scraping of dense agglomerated lumps. After the secondary scraper 4 is adjusted to a suitable position, the retaining frame 9 is disengaged from the surface of the protrusion 10 to prevent the retaining frame 9 from being accidentally touched during the cleaning process, which would cause the position of the secondary scraper 4 to change and affect normal operation. The retaining ring 11 can prevent the retaining frame 9 from falling off the outer circumference of the threaded sleeve 7. The folded tube 12 can block the threaded rod 6 extending out of the threaded sleeve 7 to prevent foreign objects from causing the threaded rod 6 to get stuck.

[0037] When the position of the mounting sleeve 13 needs to be adjusted according to the size of the seaman's hand and grip habits, the strong magnetic plate 17 is pulled by the pull ring 18 to disengage the strong magnetic plate 17 from the mounting sleeve 13, thereby pulling out the pin 15. Then, the mounting sleeve 13 is moved to the appropriate position, and the pin 15 is inserted into the corresponding hole 16 to fix the position of the mounting sleeve 13. The flexible sleeve 14 can improve the grip comfort. The strong magnetic plate 17 will be attracted to the outer circumference of the mounting sleeve 13 to prevent the pin 15 from accidentally falling off. The seaman holds the flexible sleeve 14 on the mounting sleeve 13 and puts the main scraper 3 and the auxiliary scraper 4 against the filter screen surface. The long rod 1 applies force to scrape off the dense clumps of impurities. The scraped impurities are more easily removed from the filter screen surface, completing the cleaning work.

[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An arc-shaped scraper for removing debris from the filter screen of a trailing suction hopper vessel's seabed gate, characterized in that: The device includes a long rod (1), one end of which is fixedly connected to a connecting plate (2). A main scraper (3) is fixedly connected to the surface of the connecting plate (2). Several secondary scrapers (4) are slidably connected to the surface of the main scraper (3). One end of several secondary scrapers (4) is fixedly connected to a connecting plate (5). An extension rod (8) is fixedly connected to the surface of the connecting plate (2). A threaded rod (6) is fixedly connected to one end of the extension rod (8). The threaded rod (6) passes through the connecting plate (5). A threaded sleeve (7) is rotatably connected to the surface of the connecting plate (5). The threaded sleeve (7) is threadedly connected to the threaded rod (6).

2. The arc-shaped scraper for removing debris from the filter screen of a trailing suction hopper vessel according to claim 1, characterized in that: The outer circumferential surface of the threaded sleeve (7) is movably fitted with a retaining frame (9), and the outer circumferential surface of the threaded sleeve (7) is fixedly connected with a protrusion (10) that matches the retaining frame (9).

3. The arc-shaped scraper for removing debris from the filter screen of a trailing suction hopper dredger according to claim 2, characterized in that: A retaining ring (11) is fixedly connected to the outer circumference of the threaded sleeve (7).

4. The arc-shaped scraper for removing debris from the filter screen of a trailing suction hopper vessel according to claim 1, characterized in that: The circumferential surface of the extension rod (8) is fixedly connected to a folded tube (12), one end of the folded tube (12) is fixedly connected to the connecting plate (5), and the threaded rod (6) is located inside the folded tube (12).

5. The arc-shaped scraper for removing debris from the filter screen of a trailing suction hopper dredger according to claim 1, characterized in that: The long rod (1) has two mounting sleeves (13) on its circumferential surface. A flexible sleeve (14) is fixedly connected to the outer circumferential surface of the mounting sleeve (13). A pin (15) slides through the mounting sleeve (13). The surface of the long rod (1) has several insertion holes (16) that are compatible with the pin (15).

6. The arc-shaped scraper for removing debris from the filter screen of a trailing suction hopper vessel according to claim 5, characterized in that: One end of the pin (15) is fixedly connected to a strong magnetic plate (17), and the mounting sleeve (13) is made of galvanized iron.

7. The arc-shaped scraper for removing debris from the filter screen of a trailing suction hopper vessel according to claim 6, characterized in that: A pull ring (18) is fixedly connected to the surface of the strong magnetic plate (17).

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