A hatch cover for a marine vessel

Abstract

This utility model relates to the field of hatch cover technology and discloses a marine sealing hatch cover. Because the extended enclosure is welded to the outer surface of the cover plate, it can prevent liquid from flowing directly to the hatch opening. Furthermore, because the guide plate is welded to the upper surface of the extended enclosure and tilted away from the center of the cover plate, when rainwater, seawater, or other liquids fall onto the cover plate, the guide plate can further guide the liquid away, reducing liquid accumulation. Simultaneously, because the nitrile rubber strip is fixed to the inner edge of the cover plate through a vulcanization process, it will not fall off during long-term use. Moreover, when the cover plate is closed, one side of the nitrile rubber strip contacts and is compressed against the upper surface of the mounting frame, undergoing elastic deformation, thus tightly adhering to the upper surface of the mounting frame and effectively preventing liquid from seeping from the contact surface between the cover plate and the mounting frame. Furthermore, because the nitrile rubber strip is L-shaped, its bottom fits into the groove on the annular sealing edge, further increasing the sealing performance.

Description

Technical Field

[0001] This utility model relates to the field of hatch cover technology, and in particular to a marine sealing hatch cover. Background Technology

[0002] In the shipbuilding industry, hatch covers are essential for ensuring the airtightness of ship compartments, and their performance is directly related to the safe operation of the ship and the preservation quality of the cargo.

[0003] Chinese Patent Publication No. CN222731284U discloses a ship hatch cover, including a hatch cover mounting base and a hatch cover. The hatch cover is rotatably connected to the mounting base via a rotating shaft, and a return spring is sleeved on the rotating shaft. The hatch cover includes a main body and a locking mechanism, the latter consisting of a latch, a U-shaped latch drive plate, and a hatch handle. The drive plate can slide up and down, and has drive teeth on both sides below, with a latch on each side. This mechanism combines the hatch pulling and locking actions into one, reducing the number of steps and shortening the time.

[0004] Regarding the above and existing related technologies, the inventors believe that the following defects often exist: existing hatch covers, under harsh conditions such as long-term seawater erosion and ship vibration, result in a decline in sealing performance. Utility Model Content

[0005] The technical problem to be solved by this utility model is that the existing technology has the disadvantage of reduced sealing performance of the hatch cover. To address this, we propose a marine sealing hatch cover.

[0006] To achieve the above objectives, this application adopts the following technical solution: a marine sealing hatch cover, comprising: a mounting frame, and a cover plate hinged to the upper surface of the mounting frame, a locking component being provided between the mounting frame and the cover plate, and a sealing component being provided between the mounting frame and the cover plate to increase the sealing performance.

[0007] The sealing assembly includes an extended enclosure welded to the outer surface of the cover plate, and a guide plate welded to the upper surface of the extended enclosure. The guide plate is inclined away from the center of the cover plate. A nitrile rubber strip is vulcanized on the edge of the inner wall of the cover plate. The nitrile rubber strip has an L-shaped cross-section. One side of the nitrile rubber strip is in contact with the outer surface of the mounting frame. An annular sealing edge is welded to the outer surface of the mounting frame. A groove is formed on the upper surface of the annular sealing edge. The inside of the groove is in close contact with the bottom of the nitrile rubber strip.

[0008] Preferably, the locking assembly includes a rotating handle extending through the upper surface of the cover plate and a locking block disposed at the bottom of the rotating handle. The rotating handle is connected to the cover plate by a threaded connection. A limit block is welded to the inner wall of the mounting frame, and the upper surface of the locking block contacts the bottom of the limit block.

[0009] Preferably, the locking block is an elastic member made of polyurethane.

[0010] Preferably, a vent valve is installed on the upper surface of the cover plate via a flange.

[0011] Preferably, a handle is welded to the upper surface of the cover plate, and the handles are symmetrically arranged with anti-slip textures on their outer surfaces.

[0012] Preferably, the fixed end of the hinge is welded to the outer surface of the mounting frame, and the movable end of the hinge is fixedly connected to the upper surface of the cover plate by bolts. The rotation angle range of the hinge is 0-90°.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] In this invention, the device prevents liquid from flowing directly to the connection point of the hopper by extending the enclosure and welding it to the outer surface of the cover plate. Furthermore, because the guide plate is welded to the upper surface of the extended enclosure and tilted away from the center of the cover plate, it can further guide rainwater, seawater, or other liquids away from the cover plate, reducing liquid accumulation. Simultaneously, since the nitrile rubber strip is fixed to the inner edge of the cover plate through a vulcanization process, it will not fall off during long-term use. When the cover plate is closed, one side of the nitrile rubber strip contacts and is compressed against the upper surface of the mounting frame, undergoing elastic deformation to tightly adhere to the upper surface of the mounting frame, effectively preventing liquid from seeping through the contact surface between the cover plate and the mounting frame. Moreover, because the nitrile rubber strip is L-shaped and its bottom fits into the groove on the annular sealing edge, the sealing performance is further enhanced. Attached Figure Description

[0015] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts:

[0016] Figure 1 This is a schematic diagram of the sealing state of the hopper cover of this utility model;

[0017] Figure 2 This is a schematic diagram of the open state of the compartment cover of this utility model. Figure 1 ;

[0018] Figure 3 This is a partial disassembly diagram of the sealing components of this utility model;

[0019] Figure 4 This is a schematic diagram of the open state of the compartment cover of this utility model. Figure 2 .

[0020] Legend: 1. Mounting frame; 2. Hinge; 3. Cover plate; 4. Locking assembly; 41. Rotating handle; 42. Locking block; 43. Limiting block; 5. Sealing assembly; 51. Extension enclosure; 52. Deflector plate; 53. Nitrile rubber strip; 54. Annular sealing edge; 55. Groove; 6. Vent valve; 7. Handle. Detailed Implementation

[0021] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0022] Reference Figure 1 As shown, this utility model provides a technical solution: a marine sealing hatch cover, including: a mounting frame 1, and a cover plate 3 hinged to the upper surface of the mounting frame 1 by a hinge 2, a locking component 4 is provided between the mounting frame 1 and the cover plate 3, and a sealing component 5 for increasing the sealing performance is provided between the mounting frame 1 and the cover plate 3.

[0023] Reference Figures 1-4 As shown, in this embodiment: the sealing assembly 5 includes an extended baffle 51 welded to the outer surface of the cover plate 3, and a guide plate 52 welded to the upper surface of the extended baffle 51. The guide plate 52 is inclined away from the center of the cover plate 3. A nitrile rubber strip 53 is vulcanized on the edge of the inner wall of the cover plate 3. The cross-section of the nitrile rubber strip 53 is L-shaped. One side of the nitrile rubber strip 53 is in contact with the outer surface of the mounting frame 1. An annular sealing edge 54 is welded to the outer surface of the mounting frame 1. A groove 55 is formed on the upper surface of the annular sealing edge 54. The inside of the groove 55 is in close contact with the bottom of the nitrile rubber strip 53. Since the extended baffle 51 is welded to the outer surface of the cover plate 3, it can prevent liquid from flowing directly to the port connection. And because the guide plate 52 is welded to the extended baffle 51, it can prevent liquid from flowing directly to the port connection. The upper surface of the enclosure 51 is inclined away from the center of the cover plate 3. Therefore, when rainwater, seawater or other liquids fall on the cover plate 3, the guide plate 52 can further guide the liquid away, reducing the accumulation of liquid. At the same time, since the nitrile rubber strip 53 is fixed to the inner edge of the cover plate 3 through a vulcanization process, it will not fall off during long-term use. Furthermore, when the cover plate 3 is closed, one side of the nitrile rubber strip 53 contacts and is pressed against the upper surface of the mounting frame 1, undergoing elastic deformation, thereby tightly adhering to the upper surface of the mounting frame 1 and effectively preventing liquid from penetrating from the contact surface between the cover plate 3 and the mounting frame 1. Moreover, since the nitrile rubber strip 53 is L-shaped, its bottom fits into the groove 55 on the annular sealing edge 54, thus further increasing the sealing performance.

[0024] The locking assembly 4 includes a rotating handle 41 that runs through the upper surface of the cover plate 3 and a locking block 42 that is located at the bottom of the rotating handle 41. The rotating handle 41 is connected to the cover plate 3 by a threaded connection. A limit block 43 is welded to the inner wall of the mounting frame 1. The upper surface of the locking block 42 contacts the bottom of the limit block 43. Since the rotating handle 41 is threaded to the cover plate 3, the locking block 42 will rotate and move up and down when the handle is rotated. When the limit block 43 contacts the bottom of the locking block 42, a mechanical lock is formed, fixing the cover plate 3 in the closed position and ensuring that the hatch cover will not be accidentally opened due to vibration or turbulence during ship navigation.

[0025] The locking block 42 is an elastic component made of polyurethane. When the locking block 42 is subjected to pressure, it will undergo elastic deformation to compensate for the gap changes caused by seal deformation or vibration.

[0026] A vent valve 6 is installed on the upper surface of the cover plate 3 via a flange to prevent the cover plate 3 from being difficult to open or close due to excessively high or low air pressure inside the hopper cover.

[0027] Handles 7 are welded to the upper surface of the cover plate 3. Two handles 7 are symmetrically arranged. The outer surface of the handles 7 is provided with anti-slip texture to provide a gripping point for operation, and the anti-slip texture can increase friction.

[0028] The fixed end of hinge 2 is welded to the outer surface of mounting frame 1, and the movable end of hinge 2 is fixedly connected to the upper surface of cover plate 3 by bolts. The rotation angle range of hinge 2 is 0-90°, which ensures the stable opening and closing of the hopper cover and prevents cover plate 3 from being over-opened.

[0029] Working principle: Since the extended enclosure 51 is welded to the outer surface of the cover plate 3, it can prevent liquid from flowing directly to the connection point of the hopper. Since the guide plate 52 is welded to the upper surface of the extended enclosure 51 and is inclined away from the center of the cover plate 3, when rainwater, seawater or other liquids fall on the cover plate 3, the guide plate 52 can further guide the liquid away, reducing the accumulation of liquid. At the same time, since the nitrile rubber strip 53 is fixed to the inner edge of the cover plate 3 through a vulcanization process, it will not fall off during long-term use. When the cover plate 3 is closed, one side of the nitrile rubber strip 53 contacts the upper surface of the mounting frame 1 and is pressed and undergoes elastic deformation, thereby tightly fitting the upper surface of the mounting frame 1 and effectively preventing liquid from penetrating from the contact surface between the cover plate 3 and the mounting frame 1. Moreover, since the nitrile rubber strip 53 is L-shaped and its bottom fits into the groove 55 on the annular sealing edge 54, the sealing performance is further increased. Next, since the rotating handle 41 is threaded into the cover plate 3, the locking block 42 will rotate and move up and down as the handle is rotated. When the limiting block 43 contacts the bottom of the locking block 42, a mechanical lock is formed. Furthermore, since the locking block 42 is an elastic component made of polyurethane, the locking block 42 made of polyurethane elastic material will undergo elastic deformation when compressed, compensating for gap changes caused by seal deformation or vibration. This can fix the cover plate 3 in the closed position, ensuring that the hatch cover will not be accidentally opened due to vibration or turbulence during ship navigation. In addition, the vent valve 6 on the upper surface of the cover plate 3 can prevent the air pressure inside the hopper cover from being too high or too low, which would make it difficult to open or close the cover plate 3. The handle 7 provides a convenient gripping point for operation, and the anti-slip texture on its outer surface can increase friction. Furthermore, since the fixed end of the hinge 2 is welded to the outer surface of the mounting frame 1, and the movable end of the hinge 2 is fixedly connected to the upper surface of the cover plate 3 by bolts, the rotation angle range of the hinge 2 is 0-90°. Therefore, it can ensure the stable opening and closing of the hopper cover and prevent the cover plate 3 from being over-opened.

[0030] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A marine sealing hatch cover, characterized in that: It includes a mounting frame and a cover plate hinged to the upper surface of the mounting frame, a locking assembly is provided between the mounting frame and the cover plate, and a sealing assembly for increasing the sealing performance is provided between the mounting frame and the cover plate. The sealing assembly includes an extended enclosure welded to the outer surface of the cover plate, and a guide plate welded to the upper surface of the extended enclosure. The guide plate is inclined away from the center of the cover plate. A nitrile rubber strip is vulcanized on the edge of the inner wall of the cover plate. The nitrile rubber strip has an L-shaped cross-section. One side of the nitrile rubber strip is in contact with the outer surface of the mounting frame. An annular sealing edge is welded to the outer surface of the mounting frame. A groove is formed on the upper surface of the annular sealing edge. The inside of the groove is in close contact with the bottom of the nitrile rubber strip.

2. The marine sealing hatch cover according to claim 1, characterized in that: The locking assembly includes a rotating handle extending through the upper surface of the cover plate and a locking block disposed at the bottom of the rotating handle. The rotating handle is connected to the cover plate by a threaded connection. A limit block is welded to the inner wall of the mounting frame, and the upper surface of the locking block contacts the bottom of the limit block.

3. The marine sealing hatch cover according to claim 2, characterized in that: The locking block is an elastic component made of polyurethane.

4. The marine sealing hatch cover according to claim 1, characterized in that: A vent valve is installed on the upper surface of the cover plate via a flange.

5. The marine sealing hatch cover according to claim 1, characterized in that: A handle is welded to the upper surface of the cover plate, and two handles are symmetrically arranged. The outer surface of the handle is provided with anti-slip texture.

6. The marine sealing hatch cover according to claim 1, characterized in that: The fixed end of the hinge is welded to the outer surface of the mounting frame, and the movable end of the hinge is fixedly connected to the upper surface of the cover plate by bolts. The rotation angle range of the hinge is 0-90°.

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