A marine main deck floor drain anti-clogging protection device
By designing a threaded connection device for the top cover, snap-fit parts, and connecting rods, the problem of easy blockage of floor drains was solved, achieving a stable sealing effect and improving construction safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HUDONG ZHONGHUA SHIPBUILDINGGROUP
- Filing Date
- 2026-03-30
- Publication Date
- 2026-06-02
Smart Images

Figure CN122126387A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of shipbuilding and processing technology, and in particular to a protective device for preventing blockage of a ship's main deck floor drain. Background Technology
[0002] During shipbuilding, floor drains are installed on the main deck to drain water. However, during construction, materials are piled on the deck, and these materials may fall into the drains, affecting their later use or even completely clogging them. Current technology often involves placing steel plates or other objects over the drains during construction to prevent items from falling in.
[0003] However, the items temporarily placed in the above technical solution are not secure enough. During the construction process, they may be moved or misused, causing the temporary seal to fail. Summary of the Invention
[0004] In view of this, the present invention provides a marine main deck floor drain anti-clogging protection device to solve the problem that temporary sealing of floor drains in the prior art is prone to failure.
[0005] A marine main deck drain anti-clogging protection device includes a connecting rod, an upper cover plate for covering the top of the drain opening, and a snap-fit component for engaging with the lower side of the drain opening. The upper cover plate and the snap-fit component are respectively mounted on the connecting rod. A first threaded section is provided in the middle of the connecting rod at the position where the upper cover plate is mounted. A limiting member is also provided on the connecting rod below the snap-fit component to limit the snap-fit component and prevent it from coming off the connecting rod. A locking nut is screwed onto the first threaded section for mounting above the upper cover plate, so that when the locking nut is screwed downwards, it can engage the upper cover plate and the snap-fit component on the upper and lower sides of the drain and block the drain opening.
[0006] Furthermore, the connecting rod is provided with a second threaded section at the lower end of the first threaded section, and the limiting member is a limiting nut threaded onto the second threaded section.
[0007] Furthermore, the connecting rod includes a stepped section, with a first threaded section located on the major diameter section and a second threaded section located on the minor diameter section.
[0008] Furthermore, the snap-fit component is a circular plate with notches on its edges, and the maximum diameter of the circular plate is larger than the drain opening.
[0009] Furthermore, the upper side of the snap-fit component is also provided with a snap-fit block for snapping onto the floor drain.
[0010] Furthermore, a rubber pad is also provided on the underside of the top cover.
[0011] Furthermore, the locking nut is a wing nut.
[0012] Furthermore, a handle is provided at the upper end of the connecting rod.
[0013] The beneficial effects of the anti-clogging protection device for marine main deck floor drains in this invention are as follows: The floor drain is sealed by setting upper cover plates and snap-fit components on both sides of the drain. A connecting rod facilitates the connection of the upper cover plates and snap-fit components. The snap-fit components and limiting components fix the snap-fit components at specific positions on the connecting rod. A first threaded section with a locking nut on the connecting rod allows for easy application of force to the upper cover plate. Once installed, the snap-fit components limit the position of the device relative to the floor drain. Tightening the locking nut downwards pushes the upper cover plate downwards. Since the position of the snap-fit components does not change significantly, the positions of the snap-fit components and the upper cover plate are relatively close, thus locking the upper cover plate above the floor drain and sealing the opening. Due to the connecting rod, the upper cover plate will not easily detach, thereby solving the problem of easy failure of temporary sealing of floor drains in existing technologies.
[0014] Furthermore, by setting a first threaded section and a second threaded section with different outer diameters on the connecting rod, it is convenient to reduce the distance of tightening the lock nut.
[0015] Furthermore, by setting the limiting member with a circular plate with a notch on the edge, the sealing can be maximized, while also making it easy to pass the limiting member through the opening on the floor drain.
[0016] Furthermore, the rubber pads facilitate the sealing of openings in the floor drain.
[0017] Furthermore, by providing a handle at the upper end of the connecting rod, it is not only convenient to hold and operate, but also enhances the protective effect and reduces safety hazards relative to the rod-shaped end of the connecting rod. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of an embodiment of the anti-clogging protection device for marine main deck floor drains in this invention; Figure 2 This is an exploded view of an embodiment of the anti-clogging protection device for marine main deck floor drains in this invention; Figure 3 This is a schematic diagram of the snap-fit component in an embodiment of the anti-clogging protection device for marine main deck floor drains in this invention; Figure 4 This is a schematic diagram of the structure of the upper cover plate of an embodiment of the anti-clogging protection device for marine main deck floor drains in this invention; Figure 5 This is a schematic diagram illustrating the use of an embodiment of the anti-clogging protection device for marine main deck floor drains in this invention.
[0020] The labels in the diagram mean the following: 1. Handle; 11. Connecting section; 12. First threaded section; 13. Second threaded section; 2. Locking nut; 3. Top cover plate; 4. Sealing gasket; 5. Snap-fit plate; 51. Snap-fit block; 6. Limiting nut; 7. Floor drain. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.
[0022] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.
[0023] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various information, such information should not be limited to these terms and should not be construed as indicating or implying relative importance. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."
[0024] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0025] In the description of this invention, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.
[0026] In the following description, suffixes such as "module," "part," or "unit" used to denote elements are used only for the convenience of the description of the invention and have no specific meaning in themselves. Therefore, "module" and "part" can be used interchangeably.
[0027] To better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings.
[0028] In Embodiment 1 of the marine main deck drain anti-clogging protection device (hereinafter referred to as the protection device) of the present invention: In this embodiment, the protective device consists of an upper cover plate located above the floor drain, a snap-fit component located below the floor drain, and a connecting rod connecting the upper cover plate and the snap-fit component. The upper cover plate is used to seal the opening on the floor drain.
[0029] like Figure 1 and Figure 2 As shown, specifically, the protective device includes an upper cover plate 3 located above the drain 7 and a snap-fit component located below the drain 7. To maintain the relative position of the upper cover plate 3 and the snap-fit component, a connecting rod is provided for the upper cover plate 3 and the snap-fit component to pass through. A through hole is provided in the center of the upper cover plate 3 and the snap-fit component for the connecting rod to pass through. Since the opening in the drain 7 is generally a circular hole, in order to achieve the sealing of the opening of the drain 7 by the upper cover plate 3, such as... Figure 3 and Figure 4As shown, the upper cover plate 3 is a circular cover plate, the size of which is larger than the size of the opening of the drain 7. To secure the snap-fit component below the drain 7, in this embodiment, the snap-fit component is a snap-fit plate 5, which is a circular plate with an arc notch. The maximum diameter of the circular plate is larger than the diameter of the opening of the drain 7, allowing the snap-fit component to snap onto the bottom of the drain 7. Simultaneously, the arc notch design makes the local size of the snap-fit component smaller than the opening of the drain 7, facilitating its insertion into the drain 7 opening. In this embodiment, four sets of arc notches are provided, spaced apart around the center of the snap-fit plate 5. Of course, in other embodiments, the upper cover plate can be set to other shapes, such as a square plate. Alternatively, the snap-fit component can be set to other shapes, such as a cross shape.
[0030] To facilitate a better fit between the cover and the drain 7 during use, some models of the drain 7 have a notch. Correspondingly, the drain 7 has a matching snap-fit block. For this type of drain 7, to achieve a better snap-fit effect, such as... Figures 1-3 As shown, a snap-fit block 51 for snapping and fixing the floor drain 7 is also provided on the upper surface of the snap-fit plate 5. In this embodiment, four snap-fit blocks 51 are provided, located at the edge of the snap-fit plate 5, so that after the protective device is installed, it can be engaged with the floor drain 7 to prevent rotation and is not easy to detach. Of course, such a setting is related to the structure of the floor drain 7 itself. If the floor drain 7 does not have such a notch, then the upper surface of the corresponding snap-fit plate is also a flat plate surface. Alternatively, in other embodiments, the snap-fit block can also be provided on the upper cover plate. Since the snap-fit plate is below the floor drain, it is inconvenient to operate. Using a snap-fit plate with snap-fit blocks can better maintain the position during installation and prevent detachment.
[0031] The connecting rod is used to maintain the relative position of the upper cover plate 3 and the snap-fit plate 5. To achieve limiting, a limiting component is also provided on the connecting rod below the snap-fit plate 5 to limit the position of the snap-fit plate 5. In this embodiment, the limiting component is a limiting nut 6 threaded onto the connecting rod. Correspondingly, a threaded section is provided on the connecting rod for threaded assembly with the limiting nut 6, which is referred to as the second threaded section 13. At the same time, a locking nut 2 is also provided on the connecting rod above the upper cover plate 3 to press the upper cover plate 3 downward. The locking nut 2 is a wing nut. A threaded section is also provided on the connecting rod for engaging with the locking nut 2, which is referred to as the first threaded section 12. For ease of operation, a connecting rod and a handle 1 are welded to the top of the first threaded section 12. The handle 1 has an inverted trapezoidal rod structure for easy gripping and operation. Since the end of the connecting rod needs to extend above the deck, the handle structure, compared to the rod shape, also reduces safety hazards. Of course, in other embodiments, the limiting element can also be a limiting pin fitted onto the end of the connecting rod. Alternatively, in other embodiments, the handle can be configured with other convenient operating structures. Or, in other embodiments, the connecting section can be eliminated, and the handle can be directly welded onto the first threaded section.
[0032] Due to the design of the handle 1, the upper cover plate 3 and the locking nut 2 can only be inserted from the bottom upwards. During insertion, they must first pass through the second threaded section 13 at the bottom before being screwed onto the corresponding position on the first threaded section 12. In this embodiment, the diameters of the connecting section 11 and the first threaded section 12 are approximately the same. The connecting rod has a stepped shaft at the position of the first threaded section 12 and the second threaded section 13, where the diameter of the first threaded section 12 is larger than that of the second threaded section 13. Therefore, when the locking nut 2 is inserted onto the first threaded section 12, the second threaded section 13 does not interfere with the locking nut 2 and can pass directly through, reducing the need for the locking nut 2 to be inserted. Alternatively, in other embodiments, the first and second threaded sections can be set to have the same thread specification. During assembly, the locking nut is screwed along the bottom of the connecting rod to the upper position, requiring the locking nut to be screwed a further distance.
[0033] Meanwhile, in order to facilitate the sealing of the upper cover plate 3 at the drain 7, a rubber pad is also provided on the lower surface of the upper cover plate 3. The rubber pad is the same size as the upper cover plate 3. When pressed down, the rubber pad can fit tightly against the upper surface of the drain 7, increasing the friction between the two and preventing the upper cover plate 3 from being interfered with by external forces and removed from the drain 7.
[0034] like Figure 5As shown, in use, first install the locking nut 2, the upper cover plate 3, the snap-fit plate 5, and the limiting nut 6 onto the connecting rod in sequence, maintaining a large gap between the upper cover plate 3 and the snap-fit plate 5. Then tilt the device so that the snap-fit plate 5 can enter the floor drain 7 through the opening of the floor drain 7 and enter below the floor drain 7. At this time, the upper cover plate 3 and the snap-fit plate 5 are located on the upper and lower sides of the floor drain 7, respectively. Finally, tighten the locking nut 2, which pushes the upper cover plate 3 of the rod downward. Since the axial position of the snap-fit plate 5 on the connecting rod will not change at this time, the distance between the upper cover plate 3 and the snap-fit plate 5 will gradually approach, and then press against the sides of the floor drain 7, completing the temporary blocking of the opening of the floor drain 7.
[0035] It should be understood that the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
Claims
1. A marine main deck drain anti-clogging protection device, characterized in that: The device includes a connecting rod, an upper cover plate for covering the top of the drain opening, and a snap-fit component for engaging with the lower side of the drain opening. The upper cover plate and the snap-fit component are respectively mounted on the connecting rod. A first threaded section is provided in the middle of the connecting rod at the position where the upper cover plate is mounted. A limiting component is also provided on the connecting rod below the snap-fit component to limit the snap-fit component and prevent it from coming off the connecting rod. A locking nut is also screwed onto the first threaded section to be positioned above the upper cover plate, so that when the locking nut is screwed downwards, the upper cover plate and the snap-fit component can be engaged with the upper and lower sides of the drain and block the drain opening.
2. The anti-clogging protection device for marine main deck floor drains according to claim 1, characterized in that: The connecting rod is further provided with a second threaded section at the lower end of the first threaded section, and the limiting member is a limiting nut threadedly assembled on the second threaded section.
3. The anti-clogging protection device for marine main deck floor drains according to claim 2, characterized in that: The connecting rod includes a stepped section, with a first threaded section located on the large diameter section and a second threaded section located on the small diameter section.
4. The anti-clogging protection device for marine main deck floor drains according to any one of claims 1-3, characterized in that: The snap-fit component is a circular plate with notches on its edges, and the maximum diameter of the circular plate is larger than the drain opening.
5. The anti-clogging protection device for marine main deck floor drains according to claim 4, characterized in that: The upper side of the snap-fit component is also provided with a snap-fit block for snapping onto the floor drain.
6. The anti-clogging protection device for marine main deck floor drains according to any one of claims 1-3, characterized in that: A rubber pad is also provided on the underside of the top cover.
7. The anti-clogging protection device for marine main deck floor drains according to any one of claims 1-3, characterized in that: The locking nut is a wing nut.
8. The anti-clogging protection device for marine main deck floor drains according to any one of claims 1-3, characterized in that: The upper end of the connecting rod is also provided with a handle.