Highly sealed fire damper for ships

Abstract

The application relates to a high-sealing fireproof air brake for a ship, which comprises a frame, a plurality of square blades for closing a ventilation channel in the frame after rotation, and a driving device; hollow edge columns are arranged on two inner side walls of the frame located on both sides of the air flow direction of the ventilation channel; first water through holes are arranged on the two hollow edge columns, and water injection pipes are communicated with the two hollow edge columns; the square blades are hollowly arranged and both ends of the square blades are provided with second water through holes; when the ventilation channel in the frame is closed after the rotation of the square blades, the two square blades located at the most edge are communicated with the corresponding hollow edge columns through the second water through holes of the square blades and the first water through holes of the corresponding hollow edge columns, and the second water through holes of the two adjacent square blades are communicated. The application has the advantages of high sealing.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fire damper, in particular to a high sealing fire damper for ship. BACKGROUND

[0002] The fire damper for ship is generally used in the air duct of air conditioning and ventilation system of various ships and offshore oil platforms which need fire protection, and usually includes a square frame, a driving device installed on the top of the frame and a plurality of blades which can rotate and the edges of which can be attached to the inner wall of the frame inside the frame. The blade is composed of sheet metal parts. The driving device generally includes a motor and a gear box driven by the motor. The driving shaft of the motor is connected with the driving shaft of the motor. A plurality of driven gears in the gear box are one-to-one corresponding to the rotating shafts of the blades and are connected with the rotating shafts of the corresponding blades. The motor and the gear box can drive all the blades to rotate together. The fire damper for ship is provided with temperature detection function. When the temperature in the air duct rises to a certain degree, the temperature fuse is fused, and then the driving device drives all the blades to rotate to the state that the panel of the blade is perpendicular to the air flow direction in the air duct, so as to cut off the air duct in the frame to realize the closing of the damper, so as to avoid the spread of fire and smoke through the air duct.

[0003] However, since the blades are movable in the frame, even if the size precision is well grasped when the blades are made, some small gaps will inevitably appear between the blades and the frame and between the adjacent blades, and the smoke can spread through these small gaps. Therefore, it is necessary to design a high sealing fire damper for ship. SUMMARY

[0004] In order to improve the problem that the sealing of the traditional fire damper is still not high enough, the present application provides a high sealing fire damper for ship.

[0005] The high sealing fire damper for ship provided by the present application adopts the following technical scheme:

[0006] The utility model provides a kind of high sealing fire damper for ship, including frame, a plurality of rotatable installation in the inside of the frame and along a straight line direction arrangement square blade and be provided in the outside of the frame and for controlling the driving device of square blade rotation, square blade is used to close the ventilation passage in the frame after rotation;Two inside walls of the frame located the air flow direction both sides of the ventilation passage are each provided with hollow edge column, two the first water outlet of the hollow edge column is each provided with, and two hollow edge column is each communicated with water injection pipe;Square blade is hollow and its both ends are each provided with second water outlet, when square blade closes the ventilation passage in the frame after rotation, the most edge two square blade is each communicated with corresponding hollow edge column by the second water outlet of itself and the first water outlet on corresponding hollow edge column, and two adjacent square blade is communicated by the second water outlet of two.

[0007] By adopting the above technical scheme, when the square blade is rotated to close the ventilation passage in the frame, water is injected into the hollow edge column through the water injection pipe, so that the water flow flows into the hollow edge column and each square blade, thereby forming a water seal between the square blade and the hollow edge column and between adjacent square blades, greatly improving the sealing performance.

[0008] In a specific embodiment, a rotating shaft is arranged on each square blade, and the rotating shaft comprises a first layer driving shaft and a second layer driving ring. The second layer driving ring is fixedly connected with the corresponding square blade, and the second layer driving ring is rotatably connected with the frame. A high-temperature fuse is connected between the square blade and the frame, and a torsion spring is further connected between the second layer driving ring and the frame. The torsion spring is used to drive the second layer driving ring to rotate the square blade to close the ventilation passage when the high-temperature fuse is fused. The first layer driving shaft is located inside the second layer driving ring and can rotate relative to the second layer driving ring. A first abutting block is arranged on the outer side wall of the first layer driving shaft, and a second abutting block is arranged on the inner side wall of the second layer driving ring and can abut against the first abutting block. The first layer driving shaft is connected with the driving device, and the driving device is used to drive the first layer driving shaft to rotate and drive the second layer driving ring to rotate through the first abutting block and the second abutting block. The direction in which the torsion spring drives the second layer driving ring to rotate is the same as the direction in which the first layer driving shaft drives the second layer driving ring to rotate.

[0009] By adopting the above technical scheme, in the case of danger, if the driving device does not work due to failure, and the high-temperature fuse is fused due to high temperature, the second layer driving ring can rotate to drive the square blade to close the ventilation passage under the action of the torsion spring, thereby improving the fault tolerance.

[0010] In one specific implementation, the square blades are provided with N, and N-2 square blades in the middle part correspond to the limiting block; the limiting block is fixedly arranged on the inner side wall of the bottom of the frame, and it is used to abut against the corresponding square blade when the corresponding square blade is rotated to be perpendicular to the air flow direction in the ventilation channel.

[0011] By using the above technical scheme, the limiting block has a limiting effect, which can avoid the square blade in the middle part from rotating first and turning over the position in the case of torsional spring driving.

[0012] In one specific implementation, each high-temperature fuse corresponds to an open-ended mounting box, and each mounting box is provided with a temperature transmission window on both side walls in the air flow direction in the ventilation channel; one end of the high-temperature fuse is connected to the corresponding mounting box, and the other end is connected to the corresponding square blade from the open end of the corresponding mounting box.

[0013] By using the above technical scheme, the mounting box can facilitate the installation of the high-temperature fuse, and does not affect the temperature conduction to the high-temperature fuse.

[0014] In one specific implementation, the high-temperature fuse is provided with a pulling wire at the end that passes out of the corresponding mounting box; one end of the pulling wire is fixedly connected to the high-temperature fuse, and the other end is hook-shaped; the square blade is provided with a hook ring for the hooking of the pulling wire.

[0015] By using the above technical scheme, in the case that the high-temperature fuse has not been fused after the operation of the driving device, the driving device drives the second layer of driving rings to rotate through the first layer of driving shafts, at this time, the hook-shaped end of the pulling wire that is hooked into the hook ring is more likely to be deformed and separated from the hook ring due to the pulling force, effectively ensuring that the driving device can normally operate to drive the square blade to close the ventilation channel.

[0016] In one specific implementation, the square blade includes a main body and a clamping portion arranged at both ends of the main body, the thickness of the clamping portion is less than the thickness of the main body, and a stepped groove is formed between the clamping portion and the main body; both of the hollow edge columns are provided with a clamping groove for clamping the clamping portion on the corresponding square blade, and the stepped grooves between adjacent square blades are complementary; the first water inlet is arranged on the inner side wall of the clamping groove corresponding to the hollow edge column, and the second water inlet is arranged on the inner side wall of the stepped groove corresponding to the square blade.

[0017] By using the above technical scheme, through the design of the clamping portion and the clamping groove on the hollow edge column, the sealing between the hollow edge column and the square blade and between adjacent square blades is further improved.

[0018] In a specific embodiment, a needle is fixedly connected to the first water passage of one of the hollow side columns and the second water passage of one end of the square blade; and a sealing film capable of being opened by the needle is arranged in the first water passage of the other hollow side column and the second water passage of the other end of the square blade.

[0019] By using the above technical scheme, when the square blade does not close the ventilation channel, the sealing film seals the corresponding water passage, which can effectively prevent the wind from flowing into the square blade to cause the square blade to swing and be damaged.

[0020] In a specific embodiment, a high-temperature-resistant rubber sealing ring is arranged at the first water passage and the second water passage of the needle.

[0021] By using the above technical scheme, the sealing between the water passage and the corresponding water passage is further improved, and water leakage is prevented.

[0022] In a specific embodiment, a V-shaped buckle is arranged on the side wall away from the corresponding body of each clamping part.

[0023] By using the above technical scheme, a part of the airflow and the flue gas can be blocked, and the connection between the hollow side column and the square blade and the connection between adjacent square blades are avoided from being directly impacted by the airflow and the flue gas.

[0024] In a specific embodiment, the square blade further comprises a flat upper fitting plate arranged at the top of the body and a flat lower fitting plate arranged at the bottom of the body, the top of the flat upper fitting plate is fitted with the inner side wall of the top of the frame, and the bottom of the flat lower fitting plate is fitted with the inner side wall of the bottom of the frame.

[0025] By using the above technical scheme, the sealing is ensured while effectively reducing the frictional resistance between the square blade and the inner side wall of the frame when the square blade rotates.

[0026] In summary, the present application has at least one of the following beneficial technical effects:

[0027] 1. By arranging the hollow side column, the first water passage and the second water passage, when the square blade rotates to close the ventilation channel in the frame, water can be injected into the hollow side column through the water injection pipe, so that the square blade and the hollow side column and the adjacent square blades form a water seal, which greatly improves the sealing and effectively prevents the spread of flue gas and flame;

[0028] 2. By the design of the clamping part, the clamping groove, the high-temperature-resistant rubber sealing ring and other structures, the sealing performance between the hollow edge column and the square blade and between adjacent square blades is further improved, so that the water flow for water sealing is not easy to flow out. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a schematic diagram of the overall structure of the high-sealing fire damper for ships according to the embodiment of the present application.

[0030] Figure 2 is a schematic diagram of the structure of the high-sealing fire damper for ships according to the embodiment of the present application from another perspective.

[0031] Figure 3 is a schematic diagram of the structure of the high-sealing fire damper for ships according to the embodiment of the present application from another perspective. Figure 2 is an enlarged view of part A in

[0032] Figure 4 is a sectional view of the rotating shaft according to the embodiment of the present application.

[0033] Figure 5 is a schematic diagram of the structure for embodying the connection relationship between the square blade and the hollow edge column according to the embodiment of the present application.

[0034] Figure 6 is a schematic diagram of the structure of the high-sealing fire damper for ships according to the embodiment of the present application when the square blade is in a closed state.

[0035] Figure 7 is an enlarged view of part B in Figure 5

[0036] Figure 8 is a schematic diagram of the structure of the square blade and the hollow edge column according to the embodiment of the present application from another perspective.

[0037] Figure 9 is an enlarged view of part C in Figure 8

[0038] Reference signs: 1, frame; 11, ventilation channel; 12, limiting block; 13, connecting block; 2, square blade; 21, second water inlet; 22, rotating shaft; 221, first layer driving shaft; 222, second layer driving ring; 23, first abutting block; 24, second abutting block; 25, hook and loop; 26, main body; 261, flat upper adhering plate; 262, flat lower adhering plate; 27, clamping part; 28, stepped groove; 29, V-shaped buckle plate; 3, driving device; 4, hollow edge column; 41, first water inlet; 42, water injection pipe; 43, clamping groove; 5, high-temperature fuse; 51, mounting box; 52, temperature transmission window; 53, pulling wire; 6, thimble; 7, sealing film; 8, high-temperature-resistant rubber sealing ring. DETAILED DESCRIPTION

[0039] ​​The application will be further described in detail below with reference to the accompanying drawings.

[0040] The application discloses a high-sealing fireproof damper for a ship. Referring to Figure 1 , the high-sealing fireproof damper for the ship comprises a frame 1, N rotatable square blades 2 arranged in the frame 1 are arranged inside the frame 1, and N is greater than or equal to 3. The structure of the application is described below by taking N as 3 as an example:

[0041] The frame 1 is provided with hollow side columns 4 on two inner side walls of the frame 1 located on both sides of the air flow direction of the ventilation channel 11, and the three square blades 2 are arranged in a straight line direction and between the two hollow side columns 4. The frame 1 is provided with a driving device 3 for controlling the rotation of the three square blades 2 at the top of the frame 1. In the initial state, the plate surface of the square blade 2 is parallel to the air flow direction in the ventilation channel 11. When it is necessary to close the ventilation channel 11, the three square blades 2 can be driven by the driving device 3 to rotate simultaneously in the direction of the arrow in the middle to a state in which the plate surface of the square blade 2 is perpendicular to the air flow direction in the ventilation channel 11. At this time, the three square blades 2 and the two hollow side columns 4 jointly close the ventilation channel 11. Figure 1

[0042] Referring to Figure 2 and Figure 3 , each square blade 2 is connected with the inner side wall at the top of the frame 1, and a high-temperature fuse 5 is arranged between each square blade 2 and the inner side wall at the top of the frame 1. The high-temperature fuse 5 can be a fuse or an EVA plastic strip. Each high-temperature fuse 5 corresponds to an installation box 51, and the installation box 51 is connected to a connecting block 13 fixed to the inner side wall at the top of the frame 1 by screws. The positions of the installation box 51 and the connecting block 13 do not affect the rotation of the square blade 2 to the state in which the plate surface is perpendicular to the air flow direction in the ventilation channel 11. The end of the installation box 51 close to the corresponding square blade 2 is provided with an opening, the high-temperature fuse 5 is installed in the installation box 51, one end of the high-temperature fuse 5 is fixedly connected to the corresponding installation box 51, and the other end of the high-temperature fuse 5 is connected with a pulling wire 53 and passes out from the opening of the corresponding installation box 51. In the embodiment of the application, the pulling wire 53 is made of iron wire; one side of the square blade 2 close to the corresponding installation box 51 is provided with a hook 25, one end of the pulling wire 53 is fixedly connected with the high-temperature fuse 5, and the other end of the pulling wire 53 is in the form of a hook and is hooked into the hook 25. In addition, the installation box 51 is provided with a temperature transmission window 52 on the two side walls in the air flow direction of the ventilation channel 11, which is conducive to the conduction of the temperature in the ventilation channel 11 to the high-temperature fuse 5.

[0043] Referring to Figure 2 and Figure 4 ​, the middle part of each square blade 2 is provided with a rotating shaft 22, the rotating shaft 22 comprises a first layer driving shaft 221 and a second layer driving ring 222, the first layer driving shaft 221 is located inside the second layer driving ring 222 and the first layer driving shaft 221 and the second layer driving ring 222 are connected through a bearing, so that the first layer driving shaft 221 can rotate relative to the second layer driving ring 222. The second layer driving ring 222 is fixedly connected with the corresponding square blade 2, and the second layer driving ring 222 and the frame 1 are connected through a sealing bearing. The second layer driving ring 222 and the frame 1 are also connected with a torsion spring, the torsion spring is used to drive the second layer driving ring 222 to rotate when the high-temperature fuse 5 is fused, so as to drive the square blade 2 to rotate and close the ventilation channel 11. Wherein, the inner side wall of the bottom of the frame 1 is provided with an axle hole for the second layer driving ring 222 to extend into and for the corresponding sealing bearing to be installed, the torsion spring is sleeved outside the second layer driving ring 222 and is installed in the axle hole above the sealing bearing, one end of the torsion spring is fixedly connected with the inner wall of the axle hole, and the other end is fixedly connected with the second layer driving ring 222.

[0044] With reference to Figure 4 , the outer side wall of the first layer driving shaft 221 is provided with a first abutting block 23, and the inner side wall of the second layer driving ring 222 is provided with a second abutting block 24 which can abut against the first abutting block 23. Figure 2 and Figure 3 , the first layer driving shaft 221 extends upward and is connected with the driving device 3, the driving device 3 is used to drive the first layer driving shaft 221 to rotate, so as to drive the second layer driving ring 222 to rotate through the interaction of the first abutting block 23 and the second abutting block 24, and the control of the rotation of the square blade 2 is realized. The driving principle of the driving device 3 driving the first layer driving shaft 221 to rotate is the same as that in the prior art, and will not be described here. It should be noted that the direction of the torsion spring driving the second layer driving ring 222 to rotate is the same as that of the first layer driving shaft 221 driving the second layer driving ring 222 to rotate, and when the high-temperature fuse 5 is fused when the driving device 3 is not working, the second layer driving ring 222 can rotate to drive the square blade 2 to close the ventilation channel 11, and the fault tolerance is improved.

[0045] With reference to Figure 1 , if the two square blades 2 located on the outer side rotate first, when the two square blades 2 rotate to the position that the panel is perpendicular to the air flow direction in the ventilation channel 11, the two square blades 2 will abut against the corresponding hollow side column 4 and stop rotating. In order to prevent the square blade 2 located in the middle part from rotating first and then deviating from the final position, a limiting block 12 corresponding to the square blade 2 is arranged on the inner side wall of the bottom of the frame 1, when the square blade 2 rotates to the position that the panel is perpendicular to the air flow direction in the ventilation channel 11, the square blade 2 will abut against the limiting block 12 and stop rotating.

[0046] With reference toFigure 5 The square blade 2 comprises a main body 26 and a clamping portion 27 arranged at two ends of the main body 26 in the horizontal direction, the thickness of the clamping portion 27 is less than that of the main body 26, so that a stepped groove 28 is formed between the clamping portion 27 and the main body 26. The two hollow side columns 4 are each provided with a clamping groove 43 for clamping the clamping portion 27 on the corresponding square blade 2, and the stepped grooves 28 between the two adjacent square blades 2 are complementary, in other words, the clamping portion 27 on one square blade 2 is clamped into the stepped groove 28 on the adjacent square blade 2. Figure 6 When the three square blades 2 are rotated, the clamping portion 27 on one square blade 2 is clamped into the stepped groove 28 on the adjacent square blade 2.

[0047] Referring to Figure 2 and Figure 5 , the inner side wall of the clamping groove 43 of the two hollow side columns 4 is provided with a first water inlet 41, and the inner side wall of the stepped groove 28 of the square blade 2 is provided with a second water inlet 21. The two hollow side columns 4 are each communicated with a water injection pipe 42, when the three square blades 2 are rotated to close the ventilation channel 11 in the frame 1, the two square blades 2 at the edges are each communicated with the corresponding hollow side column 4 through the second water inlet 21 of the square blade 2 and the first water inlet 41 of the corresponding hollow side column 4, and the two adjacent square blades 2 are communicated through the second water inlets 21 of the two square blades 2. At this time, water is injected into the hollow side column 4 through the water injection pipe 42, so that the water flows to the three square blades 2 in the direction indicated by the arrow in Figure 6 , so as to seal the square blades 2 with water and improve the sealing performance. The two water injection pipes 42 each extend into the bottom position of the corresponding hollow side column 4, one of the water injection pipes 42 can be connected with a water supply pipe network on the ship, and a valve can be installed between the water injection pipe 42 and the water supply pipe network to facilitate control of water injection; the other water injection pipe 42 can be connected with a water pump for pumping water out of the hollow side column 4 and the square blade 2.

[0048] Referring to Figure 5 and Figure 7 , a plurality of thimbles 6 are fixedly connected in the first water inlet 41 of one of the hollow side columns 4 and the second water inlet 21 of one end of the square blade 2 facing the hollow side column 4, and the first water inlet 41 and the second water inlet 21 provided with the thimbles 6 are each fixedly connected with a high-temperature-resistant rubber sealing ring 8 extending outward. Figure 8 and Figure 9, another first water passage 41 of the hollow side column 4 and the second water passage 21 of the other end of the square blade 2 are provided with a sealing film 7. Specifically, the sealing film 7 is made of plastic and is pasted on the inner side wall of the hollow side column 4 and the inner side wall of the square blade 2 by glue. When the three square blades 2 are rotated to close the ventilation channel 11 in the frame 1, the high-temperature-resistant rubber sealing ring 8 will extend into the corresponding first water passage 41 or second water passage 21, and the sealing film 7 will be pried open by the needle 6.

[0049] With reference to Figure 5 and Figure 6 Each clamping part 27 is provided with a V-shaped clamping plate 29 on the side wall away from the corresponding main body 26. The length of the V-shaped clamping plate 29 in the vertical direction is the same as the length of the main body 26 in the vertical direction. When the three square blades 2 are rotated to close the ventilation channel 11 in the frame 1, the two V-shaped clamping plates 29 close to the two hollow side columns 4 are clamped on the corresponding hollow side columns 4, and the other V-shaped clamping plates 29 are clamped on the main bodies 26 of the adjacent square blades 2.

[0050] With reference to Figure 2 and Figure 5 The square blade 2 further comprises a flat upper abutting plate 261 provided on the top of the main body 26 and a flat lower abutting plate 262 provided on the bottom of the main body 26, and the rotating shaft 22 passes through the flat upper abutting plate 261 and the flat lower abutting plate 262. The top of the flat upper abutting plate 261 abuts with the inner side wall of the top of the frame 1, and the bottom of the flat lower abutting plate 262 abuts with the inner side wall of the bottom of the frame 1, which not only ensures the sealing performance but also reduces the frictional resistance between the square blade 2 and the inner side wall of the frame 1 when the square blade 2 rotates.

[0051] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application. Any equivalent changes made on the basis of the structure, shape, and principle of the present application should be covered by the protection scope of the present application.

Claims

1. A high-sealing fireproof windbreak for ships, comprising a frame (1), a plurality of rotatable square blades (2) mounted on the inner side of the frame (1) and arranged in a straight line, and a drive device (3) disposed on the outer side of the frame (1) for controlling the rotation of the square blades (2), wherein the square blades (2) are used to close the ventilation channel (11) inside the frame (1) after rotation; characterized in that: Two inner side walls of the frame (1) located on both sides of the air flow direction of the ventilation channel (11) are provided with hollow edge columns (4), and the two hollow edge columns (4) are provided with first water inlets (41), and the two hollow edge columns (4) are communicated with water injection pipes (42); The square blades (2) are hollow and provided with second water inlets (21) at both ends, when the square blades (2) rotate to close the ventilation channel (11) in the frame (1), the two most edge square blades (2) are communicated with the corresponding hollow edge columns (4) through the second water inlets (21) and the first water inlets (41) on the corresponding hollow edge columns (4), and the two adjacent square blades (2) are communicated through the second water inlets (21).

2. The high-sealing fire damper for use in a ship according to claim 1, characterized by: Each square blade (2) is provided with a rotating shaft (22), and the rotating shaft (22) comprises a first layer driving shaft (221) and a second layer driving ring (222); the second layer driving ring (222) is fixedly connected with the corresponding square blade (2), and the second layer driving ring (222) is rotatably connected with the frame (1); a high-temperature fuse (5) is connected between the square blade (2) and the frame (1), and a torsional spring is further connected between the second layer driving ring (222) and the frame (1), and the torsional spring is used to drive the second layer driving ring (222) to rotate to close the ventilation channel (11) when the high-temperature fuse (5) is fused. The first layer driving shaft (221) is located inside the second layer driving ring (222), and the first layer driving shaft (221) can rotate relative to the second layer driving ring (222); a first abutting block (23) is arranged on the outer side wall of the first layer driving shaft (221), and a second abutting block (24) capable of abutting with the first abutting block (23) is arranged on the inner side wall of the second layer driving ring (222); the first layer driving shaft (221) is connected with the driving device (3), and the driving device (3) is used to drive the first layer driving shaft (221) to rotate so as to drive the second layer driving ring (222) to rotate through the first abutting block (23) and the second abutting block (24). The direction in which the torsional spring drives the second layer driving ring (222) to rotate is the same as the direction in which the first layer driving shaft (221) drives the second layer driving ring (222) to rotate.

3. The high-sealing fire damper for use in a ship according to claim 2, characterized in that: The square blades (2) are provided with N square blades (2), and N-2 square blades (2) located in the middle part are correspondingly provided with limiting blocks (12); the limiting blocks (12) are fixedly arranged on the inner side wall of the bottom of the frame (1), and are used to abut with the corresponding square blades (2) when the corresponding square blades (2) rotate to be perpendicular to the air flow direction in the ventilation channel (11).

4. The high-sealing fire damper for use in a ship according to claim 2, characterized by: Each high-temperature fuse (5) corresponds to an open-ended installation box (51), each installation box (51) is provided with a temperature window (52) on the two side walls in the air flow direction in the ventilation channel (11), one end of the high-temperature fuse (5) is connected to the corresponding installation box (51), and the other end is connected to the corresponding square blade (2) and passes out from one end of the corresponding installation box (51).

5. The high-sealing fire damper for use in a ship according to claim 4, characterized in that: One end of the high-temperature fuse (5) passing out of the corresponding installation box (51) is provided with a pulling wire (53), one end of the pulling wire (53) is fixedly connected with the high-temperature fuse (5), and the other end is hook-shaped; the square blade (2) is provided with a hook ring (25) for hooking the pulling wire (53).

6. The high-sealing fire damper for use in a ship according to claim 1, characterized by: The square blade (2) comprises a main body (26) and clamping portions (27) arranged at two ends of the main body (26), the thickness of the clamping portion (27) is less than the thickness of the main body (26), and a stepped groove (28) is formed between the clamping portion (27) and the main body (26); two hollow edge columns (4) are provided with clamping grooves (43) for clamping the clamping portions (27) on the corresponding square blades (2), and the stepped grooves (28) between adjacent two square blades (2) are complementary; the first water inlet (41) is arranged on the inner side wall of the clamping groove (43) corresponding to the hollow edge column (4), and the second water inlet (21) is arranged on the inner side wall of the stepped groove (28) corresponding to the square blade (2).

7. The high-sealing fire damper for use in a ship according to claim 6, characterized in that: A thimble (6) is fixedly connected in the first water inlet (41) of one of the hollow edge columns (4) and the second water inlet (21) of one end of the square blade (2) facing the hollow edge column (4); and a sealing film (7) capable of being pried open by the thimble (6) is arranged in the first water inlet (41) of the other hollow edge column (4) and the second water inlet (21) of the other end of the square blade (2).

8. The high-sealing fire damper for use in a ship according to claim 7, characterized by: The first water inlet (41) and the second water inlet (21) provided with the thimble (6) are provided with high-temperature-resistant rubber sealing rings (8).

9. The high-sealing fire damper for use in a ship according to claim 6, characterized by: Each clamping portion (27) is provided with a V-shaped buckle plate (29) on the side wall away from the corresponding main body (26).

10. The high-sealing fire damper for use in a ship according to claim 6, characterized by: The square blade (2) further comprises a flat upper fitting plate (261) arranged at the top of the main body (26) and a flat lower fitting plate (262) arranged at the bottom of the main body (26), the top of the flat upper fitting plate (261) is fitted with the inner side wall of the top of the frame (1), and the bottom of the flat lower fitting plate (262) is fitted with the inner side wall of the bottom of the frame (1).

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