Electromagnetic shielding floor drain for ships

Abstract

This invention relates to an electromagnetically shielded floor drain for ships, comprising a filter protection body, an adjustable shield and a fixed shield, both circular in shape, and a hollow cylindrical drain shell. The filter protection body, adjustable shield, and fixed shield are all disposed inside the drain shell, with the fixed shield located on the bottom surface of the drain shell. The adjustable shield is positioned on top of the fixed shield, and the filter protection body is positioned on top of the adjustable shield. The filter protection body has a plurality of uniformly distributed first hexagonal holes, the adjustable shield has a plurality of uniformly distributed second hexagonal holes, and the fixed shield has a plurality of uniformly distributed third hexagonal holes. While ensuring the electromagnetic shielding capability of the floor drain, it also possesses good flow capacity, anti-clogging capability, and reliability. It is easy to install, maintain, disassemble, and replace, and has a function to switch between different states to cope with different usage scenarios. This invention can help improve the electromagnetic shielding technology of ships, ensuring that personnel inside the ship are less affected or even protected from electromagnetic waves in harmful electromagnetic environments.

Description

Technical Field

[0001] This invention relates to the field of ship design and manufacturing technology, and in particular to an electromagnetically shielded floor drain for ships. Background Technology

[0002] For ships that require electromagnetic shielding in battlefield environments, the design of the entire ship’s electromagnetic shielding must be carried out from various systems, equipment and structures. Floor drains are a weak link in the electromagnetic shielding design of ships. The key to electromagnetic shielding floor drain design is to reduce or even eliminate electromagnetic waves entering the ship’s interior through the underground drainage system and protect the ship’s personnel from electromagnetic wave attacks. It is necessary to invent and design electromagnetic shielding floor drains that combine electromagnetic shielding function and ordinary floor drain function, and ensure that they have good reliability, installability, disassembly and maintenance.

[0003] There are few existing invention patents regarding floor drains with electromagnetic shielding capabilities. CN 103590482 A discloses a floor drain including a drain hole sleeve and a drain hole pin. The drain hole sleeve consists of a sleeve, a flange, and screws. The sleeve is connected to the flange by the screws. The sleeve has threads that match the drain hole pin, and the drain hole pin has threads that match the drain hole sleeve. Two layers of sealing gaskets are also provided at the step where the drain hole sleeve and drain hole pin meet. A decorative pressure plate is provided on the top of the floor drain. This invention's floor drain cannot flexibly adjust its flow capacity and electromagnetic shielding capability as needed. CN 221345825U discloses an electromagnetic odor-proof floor drain, CN217870863U discloses a novel electromagnetic odor-proof floor drain, and CN212801868U discloses a novel electromagnetic odor-proof bathroom floor drain. These only utilize electromagnetic principles to design specific functions for the floor drain and do not possess the ability to shield electromagnetic waves.

[0004] Existing floor drains typically function primarily for flow control and clogging prevention, and generally lack the ability to shield electromagnetic waves. The few floor drains that do possess electromagnetic shielding capabilities cannot flexibly adjust their electromagnetic shielding and flow control capabilities according to changes in the usage scenario, making them unsuitable for use on ships where electromagnetic wave protection is required. Summary of the Invention

[0005] To address the problem that existing floor drains lack the ability to shield electromagnetic waves, and that the few floor drains that do have electromagnetic shielding capabilities cannot flexibly adjust their electromagnetic shielding and current flow capabilities according to changes in the usage scenario, making them unsuitable for use on ships that require shielding against electromagnetic wave damage, a new electromagnetically shielded floor drain for ships is proposed.

[0006] The technical solution of this invention is as follows: an electromagnetically shielded floor drain for ships, comprising a filter protection body, an adjustable shield body, a fixed shield body, and a floor drain shell; the filter protection body, the adjustable shield body, and the fixed shield body are circular, and the floor drain shell is a hollow cylinder; the outer circumference of the filter protection body, the adjustable shield body, and the fixed shield body is the same as the inner diameter of the floor drain shell; the filter protection body, the adjustable shield body, and the fixed shield body are all disposed inside the floor drain shell; the fixed shield body is disposed on the bottom surface of the floor drain shell; the adjustable shield body is disposed on top of the fixed shield body; and the filter protection body is disposed on top of the adjustable shield body; the filter protection body is uniformly provided with a plurality of first hexagonal holes; the adjustable shield body is uniformly provided with a plurality of second hexagonal holes; and the fixed shield body is uniformly provided with a plurality of third hexagonal holes.

[0007] Preferably, the second hexagonal hole and the third hexagonal hole have the same size, and the size of the second hexagonal hole and the third hexagonal hole is smaller than the size of the first hexagonal hole.

[0008] Preferably, the filter protector has a circular hole at its center; the outer edge of the filter protector is fitted with a filter protector wall, the top surface of the filter protector wall is flush with the top surface of the filter protector, and the bottom surface of the filter protector wall protrudes relative to the bottom surface of the filter protector.

[0009] Preferably, the adjustable shield includes a plurality of first sector-shaped structures, each of which is uniformly provided with a plurality of second hexagonal holes, and the included angle between adjacent first sector-shaped structures is the same.

[0010] Preferably, an adjustable shielding wall is fitted around the outer edge of the first sector-shaped structure, the top surface of the adjustable shielding wall is flush with the top surface of the first sector-shaped structure, and the bottom surface of the adjustable shielding wall protrudes relative to the bottom surface of the first sector-shaped structure.

[0011] Preferably, the adjustable shield has an adjustment base at the center of its top surface. The outer contour of the adjustment base is hemispherical. The height of the adjustment base protruding from the adjustable shield is the same as the thickness of the filter protection body. The radius of the adjustment base is the same as the radius of the circular hole. The adjustment base has a through hole parallel to the bottom surface of the adjustment base. An adjustment ring passes through the through hole. A circular mark is engraved on the top surface of the adjustment base near the through hole. The center of the circular mark and the edge of one of the first sector structures are on the same radius.

[0012] Preferably, the fixed shielding body includes a plurality of second sector-shaped structures, each of which is uniformly provided with a plurality of third hexagonal holes; the included angle between adjacent second sector-shaped structures is the same.

[0013] Preferably, a fixed shielding wall is fitted around the outer edge of the second sector structure, and the upper and lower surfaces of the fixed shielding wall are flush with the upper and lower surfaces of the second sector structure.

[0014] Preferably, the central angle of both the first sector structure and the second sector structure is greater than 60°, and the central angle of the first sector structure is greater than the central angle of the second sector structure.

[0015] Preferably, the drain shell has a drain outlet at the center of the bottom surface inside, and a positioning block is provided on the bottom surface inside the drain shell. The positioning block is arc-shaped and is located between the inner side of the fixed shield wall and the outer edge of the drain outlet. The size of the positioning block is just enough to be embedded in the fan-shaped gap between the second fan-shaped structures. The upper surface of the drain shell has multiple I-shaped marks, and the included angle between adjacent I-shaped marks is the same.

[0016] The beneficial effects of this invention are as follows: This invention provides an electromagnetically shielded floor drain for ships, which, while ensuring the electromagnetic shielding capability of the floor drain, also has good flow capacity, anti-clogging capability and reliability. It is easy to install, maintain, disassemble and replace, and has the function of switching between different states to cope with different usage scenarios. This invention can help improve the electromagnetic shielding technology of ships and protect the personnel inside the ship from electromagnetic waves in a harmful electromagnetic environment. Attached Figure Description

[0017] Figure 1 This is a front view of the electromagnetic shielded floor drain for ships according to the present invention.

[0018] Figure 2 This is a front view of the filter protection body of the present invention;

[0019] Figure 3 This is a top view of the filter protection body of the present invention;

[0020] Figure 4 This is a front view of the adjustable shield of the present invention;

[0021] Figure 5 This is a top view of the adjustable shield of the present invention;

[0022] Figure 6 This is a top view of the adjusting base and adjusting ring of the present invention;

[0023] Figure 7 This is a front view of the adjusting base and adjusting ring of the present invention;

[0024] Figure 8 This is a front view of the fixed shielding body of the present invention;

[0025] Figure 9 This is a top view of the fixed shielding body of the present invention;

[0026] Figure 10 This is a front view of the drain shell of the present invention;

[0027] Figure 11 This is a top view of the drain shell of the present invention.

[0028] The component names corresponding to the various reference numerals in the diagram are as follows:

[0029] 1. Filter protection body; 11. Filter protection body wall; 12. Round hole; 13. First hexagonal hole; 2. Adjustable shield; 21. Adjustable shield wall; 22. Adjusting base; 23. Adjusting ring; 24. Circular mark; 25. First sector structure; 251. Second hexagonal hole; 3. Fixed shield; 31. Fixed shield wall; 32. Second sector structure; 321. Third hexagonal hole; 4. Drain shell; 41. Positioning block; 42. I-shaped mark; 43. Drain outlet. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0031] refer to Figure 1 As shown in the figure, this application discloses an electromagnetically shielded floor drain for ships, including a filter protection body 1, an adjustable shield body 2, a fixed shield body 3, and a floor drain shell 4. The filter protection body 1, the adjustable shield body 2, and the fixed shield body 3 are circular, and the floor drain shell 4 is a hollow cylinder. The outer circumference of the filter protection body 1, the adjustable shield body 2, and the fixed shield body 3 is the same as the inner diameter of the floor drain shell 4. The filter protection body 1, the adjustable shield body 2, and the fixed shield body 3 are all disposed inside the floor drain shell 4. The fixed shield body 3 is disposed on the bottom surface of the floor drain shell 4. The adjustable shield body 2 is disposed on the top of the fixed shield body 3. The adjustable shield body 2 can rotate circumferentially. The filter protection body 1 is disposed on the top of the adjustable shield body 2. The upper surface of the floor drain shell 4 is flush with the upper surface of the filter protection body 1.

[0032] refer to Figure 2 , 3 As shown, a circular hole 12 is provided at the center of the filter protection body 1, and a plurality of first hexagonal holes 13 are uniformly provided on the filter protection body 1; a filter protection body wall 11 is fitted around the outer edge of the filter protection body 1, the top surface of the filter protection body wall 11 is flush with the top surface of the filter protection body 1, and the bottom surface of the filter protection body wall 11 protrudes slightly relative to the bottom surface of the filter protection body 1.

[0033] refer to Figure 4 , 5 As shown, the adjustable shield 2 includes a plurality of first sector structures 25, each of which is uniformly provided with a plurality of second hexagonal holes 251. In this embodiment, the adjustable shield 2 includes three first sector structures 25 with densely packed second hexagonal holes 251. The central angle of each first sector structure 25 is the same, all within the range of 65° to 70°, and the included angle between adjacent first sector structures 25 is the same.

[0034] An adjustable shielding wall 21 is fitted around the outer edge of the first sector structure 25. The top surface of the adjustable shielding wall 21 is flush with the top surface of the first sector structure 25, and the bottom surface of the adjustable shielding wall 21 protrudes slightly from the bottom surface of the first sector structure 25.

[0035] An adjustment base 22 is welded to the center of the top surface of the adjustable shield 2. The outer contour of the adjustment base 22 is a hemispherical surface. The height of the adjustment base 22 protruding from the adjustable shield 2 is the same as the thickness of the filter protection body 1. The bottom radius of the adjustment base 22 is the same as the radius of the circular hole 12.

[0036] refer to Figure 6 , 7 As shown, the adjustment base 22 has a through hole parallel to the bottom surface of the adjustment base 22, and an adjustment ring 23 is inserted into the through hole. A circular mark 24 is engraved on the top surface of the adjustment base 22 near the through hole. The center of the circular mark 24 is on the same radius as the edge of one of the first sector structures 25.

[0037] refer to Figure 8 , 9 As shown, the fixed shield 3 includes a plurality of second sector structures 32, each of which is uniformly provided with a plurality of third hexagonal holes 321. In this embodiment, the fixed shield 3 includes three second sector structures 32 with densely packed third hexagonal holes 321. The central angle of each second sector structure 32 is the same, all within the range of 60° to 65°, and the included angle between adjacent second sector structures 32 is the same.

[0038] The outer edge of the second sector structure 32 is fitted with a fixed shielding wall 31, and the upper and lower surfaces of the fixed shielding wall 31 and the upper and lower surfaces of the second sector structure 32 are flush.

[0039] The central angle of the first sector structure 25 and the central angle of the second sector structure 32 are both greater than 60°, and the central angle of the first sector structure 25 is greater than the central angle of the second sector structure 32.

[0040] The second hexagonal hole 251 and the third hexagonal hole 321 have the same size, and the size of the second hexagonal hole 251 and the third hexagonal hole 321 is smaller than the size of the first hexagonal hole 13.

[0041] refer to Figure 10 , 11As shown, the top surface of the drain shell 4 has bolt holes on its outer edge extending circumferentially. The drain shell 4 can be installed on the ship deck by bolt connection. The drain outlet 43 is provided in the center of the bottom surface inside the drain shell 4. A positioning block 41 is welded to the bottom surface inside the drain shell 4. The positioning block 41 is arc-shaped and is located between the inner side of the fixed shield wall 31 and the outer edge of the drain outlet 43. The size of the positioning block 41 can be just embedded in the fan-shaped gap between the second fan-shaped structures 32.

[0042] The upper surface of the drain shell 4 is engraved with multiple straight lines 42. In this example, there are 3 straight lines 42, and the included angle between adjacent straight lines 42 is the same.

[0043] The specific working principle and operation method are as follows: In this embodiment, the frequency of the external signal to be shielded is 8-12GHz. The distance between opposite sides of the second hexagonal hole 251 and the third hexagonal hole 321 is designed to be 1cm. At this time, the distance between the two farthest points on the hexagon is 1.155cm. According to the formula "cutoff frequency = 15 × 10⁹ ÷ distance between the two farthest points on the hexagon" (where the units of cutoff frequency and distance between the two farthest points on the hexagon are GHz and cm, respectively), the cutoff frequency of the hexagonal hole is calculated to be 12.98GHz. This cutoff frequency is higher than the frequency of the external signal, which can play an effective electromagnetic shielding role. The thickness of both the adjustable shield 2 and the fixed shield 3 is designed to be 6cm. The distance between opposite sides of the hexagonal holes of the filter protection body 1 is designed to be 2.5cm.

[0044] The adjustable shield 2 can be adjusted by manually twisting the adjusting ring 23 to change its circumferential position. When the circular mark 24 of the adjusting base 22 is aligned with the straight mark 42 of the drain shell 4, the drain has the strongest electromagnetic shielding capability and a certain flow capacity. When the circular mark 24 of the adjusting base 22 is in the middle of any two straight marks 42 of the drain shell 4, the drain has the strongest flow capacity. The drain always has anti-clogging capability.

[0045] The beneficial effects are as follows: The electromagnetic shielding floor drain for ships of the present invention ensures the electromagnetic shielding capability of the floor drain while having good flow capacity, anti-clogging capability and reliability. It is easy to install, maintain, disassemble and replace, and has the function of switching between different states to cope with different usage scenarios. The present invention can help improve the electromagnetic shielding technology of ships and protect the personnel inside the ship from electromagnetic waves in a harmful electromagnetic environment.

[0046] It should be noted that the terms "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present 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, and therefore should not be construed as a limitation of the present invention. The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. "A plurality of" means two or more. "Installed," "connected," and "joined" should be interpreted broadly; for example, it can refer to a fixed connection, a detachable connection, or an integral connection.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any form or substance. It should be noted that those skilled in the art can make various improvements and additions without departing from the present invention, and these improvements and additions should also be considered within the scope of protection of the present invention. Any modifications, alterations, and equivalent changes made by those skilled in the art based on the above-disclosed technical content without departing from the spirit and scope of the present invention are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, and evolutions made to the above embodiments based on the essential technology of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An electromagnetic shielded floor drain for a ship, characterized by, The utility model provides a filter protection body (1), adjustable shield (2), fixed shield (3), floor drain shell (4), filter protection body (1), adjustable shield (2) and fixed shield (3) are circular, and floor drain shell (4) is hollow cylinder, and the outer perimeter radius of filter protection body (1), adjustable shield (2) and fixed shield (3) and the inside diameter of floor drain shell (4) are same, and filter protection body (1), adjustable shield (2) and fixed shield (3) are all arranged inside floor drain shell (4), and fixed shield (3) is arranged at floor drain shell (4) bottom, and the top of fixed shield (3) is provided with adjustable shield (2), and the top of adjustable shield (2) is provided with filter protection body (1), and filter protection body (1) is evenly provided with a plurality of first hexagonal holes (13), and adjustable shield (2) is evenly provided with a plurality of second hexagonal holes (251), and fixed shield (3) is evenly provided with a plurality of third hexagonal holes (321).

2. The electromagnetic shielding floor drain for ships as claimed in claim 1, wherein The size of the second hexagonal hole (251) and the third hexagonal hole (321) is the same, and the size of the second hexagonal hole (251) and the third hexagonal hole (321) is smaller than the size of the first hexagonal hole (13).

3. The electromagnetic shielding floor drain for ships as recited in claim 1, wherein The filter protection body (1) is provided with a circular hole (12) at the center, and the outer edge of the filter protection body (1) is sleeved with a filter protection body wall (11), the top surface of the filter protection body wall (11) is flush with the top surface of the filter protection body (1), and the bottom surface of the filter protection body wall (11) is protruded relative to the bottom surface of the filter protection body (1).

4. The electromagnetic shielding floor drain for ships as recited in claim 1, wherein The adjustable shield (2) includes a plurality of first fan-shaped structures (25), each first fan-shaped structure (25) is evenly provided with a plurality of second hexagonal holes (251), and the included angle between adjacent first fan-shaped structures (25) is the same.

5. The electromagnetic shielding floor drain for ships as claimed in claim 4 wherein, The outer edge of the first fan-shaped structure (25) is sleeved with an adjustable shield wall (21), the top surface of the adjustable shield wall (21) is flush with the top surface of the first fan-shaped structure (25), and the bottom surface of the adjustable shield wall (21) is protruded relative to the bottom surface of the first fan-shaped structure (25).

6. The electromagnetic shielding floor drain for ships as claimed in claim 4 wherein, The top surface of the adjustable shield (2) is provided with an adjusting base (22), the outer contour of the adjusting base (22) is a hemispherical surface, the height of the adjusting base (22) protruding from the adjustable shield (2) is the same as the thickness of the filter protection body (1), and the radius of the adjusting base (22) is the same as the radius of the circular hole (12); the adjusting base (22) is provided with a through hole parallel to the bottom surface of the adjusting base (22), an adjusting ring (23) is arranged in the through hole, a circular mark (24) is engraved on the top surface of the adjusting base (22) near the through hole, and the center of the circular mark (24) is on the same radius as the edge of one of the first fan-shaped structures (25).

7. The electromagnetic shielding floor drain of claim 4 wherein, The fixed shield (3) includes a plurality of second fan-shaped structures (32), each second fan-shaped structure (32) is evenly provided with a plurality of third hexagonal holes (321), and the included angle between adjacent second fan-shaped structures (32) is the same.

8. The electromagnetic shielding floor drain for ships according to claim 7, characterized in that, The outer edge of the second fan-shaped structure (32) is sleeved with a fixed shield wall (31), and the upper and lower surfaces of the fixed shield wall (31) are flush with the upper and lower surfaces of the second fan-shaped structure (32).

9. The electromagnetic shielding floor drain for ships as claimed in claim 7 wherein, The central angle of the first sector structure (25) and the central angle of the second sector structure (32) are both greater than 60°, and the central angle of the first sector structure (25) is greater than the central angle of the second sector structure (32).

10. The electromagnetic shielding floor drain for ships as claimed in claim 8 wherein, The drain shell (4) is internally provided with a drain port (43) at the center of the bottom surface, and the bottom surface of the drain shell (4) is provided with a positioning block (41) in the form of a circular arc, the positioning block (41) being located between the inner side of the fixed shielding body wall (31) and the outer edge of the drain port (43), and the size of the positioning block (41) being just capable of being embedded into the sector gap between the second sector structure (32); the upper surface of the drain shell (4) is provided with a plurality of linear marks (42), and the included angle between adjacent linear marks (42) is the same.

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