Electromagnetic shielding floor drain for ship

Abstract

The invention relates to an electromagnetic shielding floor drain for ships, which comprises a filter protection body, an adjustable shielding body and a fixed shielding body which are round, a floor drain shell is a hollow cylinder, the filter protection body, the adjustable shielding body and the fixed shielding body are all arranged in the floor drain shell, the fixed shielding body is arranged on the bottom surface of the floor drain shell, and the adjustable shielding body is arranged at the top of the fixed shielding body. A filtering protection body is arranged at the top of the adjustable shielding body; a plurality of first hexagonal holes are uniformly formed in the filtering protection body, a plurality of second hexagonal holes are uniformly formed in the adjustable shielding body, and a plurality of third hexagonal holes are uniformly formed in the fixed shielding body; while the electromagnetic shielding capability of the floor drain is ensured, the floor drain has good through-current capability, anti-blocking capability and reliability, is convenient to install, maintain, disassemble and replace, has a function of switching different states to cope with different use scenes, can help to improve the electromagnetic shielding technology of ships and warships, and improves the electromagnetic shielding efficiency of the ships and warships. And personnel in the ship can be protected from being damaged by electromagnetic waves in a harmful electromagnetic environment.

Description

Technical Field

[0001] The present invention relates to the technical field of ship design and manufacturing, and particularly relates to an electromagnetic shielding floor drain for ships. Background Art

[0002] For ships that require electromagnetic shielding in the battlefield environment, the electromagnetic shielding of the whole ship needs to be designed from various systems, equipment, and structures. The floor drain is a weak link in the electromagnetic shielding design of ships. Weakening or even eliminating the electromagnetic waves entering the ship interior through the underground drainage pipe system and protecting the personnel inside the ship from electromagnetic wave attacks as little as possible is the key to the design of the electromagnetic shielding floor drain. It is necessary to invent and design an electromagnetic shielding floor drain that combines electromagnetic shielding function and ordinary floor drain function, and ensure its good reliability, installability, dismountability, and maintainability.

[0003] There are few existing invention patents on floor drains with electromagnetic shielding functions. CN 103590482 A discloses a floor drain, which includes a drain hole sleeve and a drain hole pin. The drain hole sleeve is composed of a sleeve, a flange plate, and a screw. The sleeve is connected to the flange plate by the screw. The sleeve is provided with a thread matching the drain hole pin, and the drain hole pin is provided with a thread to match the drain hole sleeve. Two layers of sealing washers are also provided at the step where the drain hole sleeve and the drain hole pin are combined. A decorative pressing plate is provided at the top of the floor drain. The floor drain of this invention cannot flexibly adjust its flow capacity and electromagnetic shielding ability as needed. The electromagnetic anti-odor floor drain disclosed in CN 221345825U, the novel electromagnetic anti-odor floor drain disclosed in CN217870863U, and the novel electromagnetic anti-odor bathroom floor drain disclosed in CN212801868U only utilize the electromagnetic principle to design specific functions of the floor drain and do not have the ability to shield electromagnetic waves.

[0004] Existing floor drains usually mainly function for drainage and anti-blockage, generally do not have the ability to shield electromagnetic waves, and a few floor drains with electromagnetic shielding ability cannot timely and flexibly adjust their own electromagnetic shielding ability and flow capacity according to the change of the use scenario, and are not suitable for application on ships that need to shield electromagnetic wave intrusion. Summary of the Invention

[0005] Aiming at the problems that existing floor drains do not have the ability to shield electromagnetic waves, and a few floor drains with electromagnetic shielding ability cannot timely and flexibly adjust their own electromagnetic shielding ability and flow capacity according to the change of the use scenario, and are not suitable for application on ships that need to shield electromagnetic wave intrusion, an electromagnetic shielding floor drain for ships is proposed.

[0006] The technical solution of the present invention is: an electromagnetic shielding floor drain for ships, comprising a filtering protective body, an adjustable shielding body, a fixed shielding body, and a floor drain shell; the filtering protective body, the adjustable shielding body and the fixed shielding body are circular, and the floor drain shell is a hollow cylinder; the outer radii of the filtering protective body, the adjustable shielding body and the fixed shielding body are the same as the inner diameter of the floor drain shell; the filtering protective body, the adjustable shielding body and the fixed shielding body are all arranged inside the floor drain shell, the fixed shielding body is arranged on the bottom surface of the floor drain shell, the adjustable shielding body is arranged on the top of the fixed shielding body, and the filtering protective body is arranged on the top of the adjustable shielding body; a plurality of first hexagonal holes are evenly arranged on the filtering protective body, a plurality of second hexagonal holes are evenly arranged on the adjustable shielding body, and a plurality of third hexagonal holes are evenly arranged on the fixed shielding body.

[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, a circular hole is provided at the center of the filter protector; a filter protector wall is provided on the outer edge of the filter protector, 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 shielding body comprises a plurality of first fan-shaped structures, each of the first fan-shaped structures is evenly provided with a plurality of second hexagonal holes, and the angles between adjacent first fan-shaped structures are the same.

[0010] Preferably, an adjustable shielding body wall is sleeved on the outer edge of the first fan-shaped structure, the top surface of the adjustable shielding body wall is flush with the top surface of the first fan-shaped structure, and the bottom surface of the adjustable shielding body wall is protruding relative to the bottom surface of the first fan-shaped structure.

[0011] Preferably, an adjustment base is provided at the center of the top surface of the adjustable shielding body, the outer contour of the adjustment base is a hemispherical surface, the height of the adjustment base protruding from the adjustable shielding body is the same as the thickness of the filtering protection body, and the radius of the adjustment base is the same as the radius of the circular hole; the adjustment base is provided with a through hole parallel to the bottom surface of the adjustment base, an adjustment ring is passed through the through hole, and a circular mark is engraved on the top surface of the adjustment base near the through hole, and the center of the circular mark is on the same radius as the edge of one of the first fan-shaped structures.

[0012] Preferably, the fixed shielding body comprises a plurality of second fan-shaped structures, each of which is evenly provided with a plurality of third hexagonal holes; and the angles between adjacent second fan-shaped structures are the same.

[0013] Preferably, a fixed shielding body wall is sleeved on the outer edge of the second fan-shaped structure, and the upper and lower surfaces of the fixed shielding body wall are flush with the upper and lower surfaces of the second fan-shaped structure.

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

[0015] Preferably, a drain opening is provided at the center of the inner bottom surface of the floor drain housing, and a positioning block is provided on the inner bottom surface of the floor drain housing. The positioning block is arc-shaped, and its position is between the inner side of the fixed shielding body wall and the outer edge of the drain opening. The size of the positioning block can just be embedded into the sector-shaped gap between the second sector structures; multiple linear marks are provided on the upper surface of the floor drain housing, and the angles between adjacent linear marks are the same.

[0016] The beneficial effects of the present invention are as follows: An electromagnetic shielding floor drain for ships of the present invention has good current-carrying capacity, anti-blocking ability and reliability while ensuring the electromagnetic shielding ability of the floor drain. It is convenient for installation, maintenance, disassembly and replacement, 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 ships from being less or even not affected by electromagnetic waves in a harmful electromagnetic environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the front view of the electromagnetic shielding floor drain for ships of the present invention;

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

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

[0020] Figure 4 is the front view of the adjustable shielding body of the present invention;

[0021] Figure 5 is the top view of the adjustable shielding body of the present invention;

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

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

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

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

[0026] Figure 10 is the front view of the floor drain housing of the present invention;

[0027] Figure 11 is the top view of the floor drain housing of the present invention.

[0028] In the figure, the component names corresponding to the respective reference numerals are as follows:

[0029] 1. Filter protection body; 11. Filter protection body wall; 12. Round hole; 13. First hexagonal hole; 2. Adjustable shielding body; 21. Adjustable shielding body wall; 22. Adjusting base; 23. Adjusting ring; 24. Circular mark; 25. First sector structure; 251. Second hexagonal hole; 3. Fixed shielding body; 31. Fixed shielding body wall; 32. Second sector structure; 321. Third hexagonal hole; 4. Floor drain shell; 41. Positioning block; 42. Linear mark; 43. Drainage port. Detailed implementation mode

[0030] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and the detailed implementation manner and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0031] Refer to Figure 1 As shown, an electromagnetic shielding floor drain for a ship includes a filter protection body 1, an adjustable shielding body 2, a fixed shielding body 3, and a floor drain shell 4; the filter protection body 1, the adjustable shielding body 2, and the fixed shielding body 3 are circular, the floor drain shell 4 is a hollow cylinder, the outer peripheral radii of the filter protection body 1, the adjustable shielding body 2, and the fixed shielding body 3 are the same as the inner diameter of the floor drain shell 4, the filter protection body 1, the adjustable shielding body 2, and the fixed shielding body 3 are all arranged inside the floor drain shell 4, the fixed shielding body 3 is arranged on the bottom surface of the floor drain shell 4, the adjustable shielding body 2 is arranged on the top of the fixed shielding body 3, the adjustable shielding body 2 can rotate along the circumference, the filter protection body 1 is arranged on the top of the adjustable shielding body 2, and 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 round 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 sleeved on 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 shielding body 2 includes a plurality of first sector structures 25, and a plurality of second hexagonal holes 251 are uniformly provided on each first sector structure 25; in this actual example, the adjustable shielding body 2 includes 3 first sector structures 25 densely provided with second hexagonal holes 251, the central angles of each first sector structure 25 are the same, and are all in the range of 65° to 70°, and the included angles between adjacent first sector structures 25 are the same.

[0034] An adjustable shielding wall 21 is sleeved on 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 relative to the bottom surface of the first sector structure 25.

[0035] An adjustment base 22 is welded at the center of the top surface of the adjustable shielding body 2. The outer contour of the adjustment base 22 is a hemispherical surface. The height by which the adjustment base 22 protrudes from the adjustable shielding body 2 is the same as the thickness of the filtering and protecting body 1, and the bottom surface radius of the adjustment base 22 is the same as the radius of the round hole 12.

[0036] Reference Figure 6 、 7 As shown in the reference

[0037] Reference Figure 8 、 9 As shown, the fixed shielding body 3 includes a plurality of second sector structures 32, and a plurality of third hexagonal holes 321 are uniformly arranged on each second sector structure 32; in this actual example, the fixed shielding body 3 includes 3 second sector structures 32 densely provided with third hexagonal holes 321, and the central angles of each second sector structure 32 are the same, all within the range of 60° to 65°, and the included angles between adjacent second sector structures 32 are the same.

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

[0039] The central angles of both the first sector structure 25 and the second sector structure 32 are 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 holes 251 and the third hexagonal holes 321 have the same size, and the second hexagonal holes 251 and the third hexagonal holes 321 are smaller than the first hexagonal holes 13 in size.

[0041] Reference Figure 10 、 11As shown in the figure, bolt holes are provided in the outer edge of the top surface of the floor drain housing 4 extending circumferentially. The floor drain housing 4 can be installed on the ship deck by bolt connection. A drain port 43 is provided at the center of the inner bottom surface of the floor drain housing 4. A positioning block 41 is welded to the inner bottom surface of the floor drain housing 4. The positioning block 41 is arc-shaped. The position of the positioning block 41 is between the inner side of the fixed shielding body wall 31 and the outer edge of the drain port 43. The size of the positioning block 41 is just right to be embedded in the fan-shaped gap between the second sector structures 32.

[0042] Multiple linear marks 42 are engraved on the upper surface of the floor drain housing 4. In this actual example, there are 3 linear marks 42, and the included angles between adjacent linear marks 42 are the same.

[0043] The specific working principle and working mode are as follows: In this embodiment, the external signal frequency to be shielded is 8 - 12 GHz. The distance between the opposite sides of the second hexagonal hole 251 and the third hexagonal hole 321 is designed to be 1 cm. At this time, the distance between the two farthest points on the hexagon is 1.155 cm. According to the formula "cut-off frequency = 15×10^9÷the distance between the two farthest points on the hexagon" (where the units of the cut-off frequency and the distance between the two farthest points on the hexagon are GHz and cm respectively), it can be calculated that the cut-off frequency of this hexagonal hole is 12.98 GHz. This cut-off frequency is higher than the external signal frequency and can play an effective electromagnetic shielding role. The thicknesses of both the adjustable shielding body 2 and the fixed shielding body 3 are designed to be 6 cm. The distance between the opposite sides of the hexagonal holes of the filtering and protecting body 1 is designed to be 2.5 cm.

[0044] The adjustable shielding body 2 can adjust the circumferential position of the adjustable shielding body 2 by manually turning the adjusting ring 23. When the circular mark 24 of the adjusting base 22 is aligned with the linear mark 42 of the floor drain housing 4, the floor drain has the strongest electromagnetic shielding ability and a certain current-carrying capacity. When the circular mark 24 of the adjusting base 22 is in the middle of any two linear marks 42 of the floor drain housing 4, the floor drain has the strongest current-carrying capacity; the floor drain always has the ability to prevent blockage.

[0045] The beneficial effects are as follows: An electromagnetic shielding floor drain for ships in the present invention has good current-carrying capacity, anti-blocking ability and reliability while ensuring the electromagnetic shielding ability of the floor drain, is convenient for installation, maintenance, disassembly and replacement, and has the function of converting 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 ships from being less or even not affected by electromagnetic waves in a harmful electromagnetic environment.

[0046] It should be noted that the orientation or positional relationship indicated by the above terms "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. The terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. The meaning of "a plurality of" is two or more. The terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection.

[0047] As described above, the above are only the preferred embodiments of the present invention and do not impose any formal or substantial limitations on the present invention. It should be pointed out that for those of ordinary skill in the art of this technology, without departing from the premise of the present invention, several improvements and supplements can still be made, and these improvements and supplements should also be regarded as the protection scope of the present invention. For those skilled in the art, without departing from the spirit and scope of the present invention, any equivalent changes made by using the technical content disclosed above, such as slight modifications, decorations, and evolutions, are all equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications, and evolutions made to the above embodiments based on the essence of the present invention still fall within the scope of the technical solutions of the present invention.

Claims

1. An electromagnetic shielding floor drain for ships, characterized in that: The invention comprises a filter protection body (1), an adjustable shielding body (2), a fixed shielding body (3), and a floor drain shell (4); the filter protection body (1), the adjustable shielding body (2) and the fixed shielding body (3) are circular, the floor drain shell (4) is a hollow cylinder, the outer radii of the filter protection body (1), the adjustable shielding body (2) and the fixed shielding body (3) are the same as the inner diameter of the floor drain shell (4), the filter protection body (1), the adjustable shielding body (2) and the fixed shielding body (3) are all arranged inside the floor drain shell (4), the fixed shielding body (3) is arranged on the bottom surface of the floor drain shell (4), the adjustable shielding body (2) is arranged on the top of the fixed shielding body (3), and the filter protection body (1) is arranged on the top of the adjustable shielding body (2); a plurality of first hexagonal holes (13) are evenly arranged on the filter protection body (1), a plurality of second hexagonal holes (251) are evenly arranged on the adjustable shielding body (2), and a plurality of third hexagonal holes (321) are evenly arranged on the fixed shielding body (3).

2. The electromagnetic shielding floor drain for ships according to claim 1, characterized in that: The second hexagonal hole (251) and the third hexagonal hole (321) have the same size, and the sizes of the second hexagonal hole (251) and the third hexagonal hole (321) are smaller than the size of the first hexagonal hole (13).

3. The electromagnetic shielding floor drain for ships according to claim 1, characterized in that: The filter protector (1) is provided with a circular hole (12) at the center of the circle; the outer edge of the filter protector (1) is sleeved with a filter protector wall (11); the top surface of the filter protector wall (11) is flush with the top surface of the filter protector (1), and the bottom surface of the filter protector wall (11) is protruding relative to the bottom surface of the filter protector (1).

4. The electromagnetic shielding floor drain for ships according to claim 1, characterized in that: The adjustable shielding body (2) comprises a plurality of first fan-shaped structures (25), each of the first fan-shaped structures (25) being evenly provided with a plurality of second hexagonal holes (251), and the angles between adjacent first fan-shaped structures (25) being the same.

5. The electromagnetic shielding floor drain for ships according to claim 1, characterized in that: An adjustable shielding body wall (21) is sleeved on the outer edge of the first fan-shaped structure (25); the top surface of the adjustable shielding body wall (21) is flush with the top surface of the first fan-shaped structure (25); and the bottom surface of the adjustable shielding body wall (21) is protruding relative to the bottom surface of the first fan-shaped structure (25).

6. The electromagnetic shielding floor drain for ships according to claim 4, characterized in that: An adjustment base (22) is provided at the center of the top surface of the adjustable shielding body (2); the outer contour of the adjustment base (22) is a hemispherical surface; the height of the adjustment base (22) protruding from the adjustable shielding body (2) is the same as the thickness of the filter protection body (1); the radius of the adjustment base (22) is the same as the radius of the circular hole (12); the adjustment base (22) is provided with a through hole parallel to the bottom surface of the adjustment base (22); 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 fan-shaped structures (25).

7. The electromagnetic shielding floor drain for ships according to claim 4, characterized in that: The fixed shielding body (3) comprises a plurality of second fan-shaped structures (32), each second fan-shaped structure (32) being evenly provided with a plurality of third hexagonal holes (321); and the included angles between adjacent second fan-shaped structures (32) are the same.

8. The electromagnetic shielding floor drain for ships according to claim 7, characterized in that: A fixed shielding body wall (31) is sleeved on the outer edge of the second fan-shaped structure (32), and the upper and lower surfaces of the fixed shielding body 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 according to claim 7, characterized in that: The central angle of the first fan-shaped structure (25) and the central angle of the second fan-shaped structure (32) are both greater than 60°, and the central angle of the first fan-shaped structure (25) is greater than the central angle of the second fan-shaped structure (32).

10. The electromagnetic shielding floor drain for ships according to claim 8, characterized in that: A drainage port (43) is provided at the center of the inner bottom surface of the floor drain shell (4); a positioning block (41) is provided on the inner bottom surface of the floor drain shell (4); the positioning block (41) is arc-shaped; the positioning block (41) is located between the inner side of the fixed shielding body wall (31) and the outer edge of the drainage port (43); the size of the positioning block (41) can just be embedded in the fan-shaped gap between the second fan-shaped structures (32); a plurality of straight-line marks (42) are provided on the upper surface of the floor drain shell (4); and the angles between adjacent straight-line marks (42) are the same.

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