A noise reduction shutter for ships

Abstract

The present invention relates to the technical field of marine shutters, and discloses a marine noise reduction shutter, comprising a window frame, wherein a plurality of inner blades are evenly spaced inside the window frame, and both sides of each inner blade are rotatably connected to the inner side wall of the window frame through a connecting shaft, and a cavity 1 is provided at the bottom end of the inner side of the inner blade, and the cavity 1 is filled with a sound absorbing board. The present invention enables the shutter to synchronously control the gas content inside the micro-cylinder during the opening and closing process through the mutual cooperation between the opening and closing mechanism and the gas flow component, so that when the shutter is closed, the bottom end of the outer blade blocks the closed gap between the upper and lower inner blades to achieve the outer layer sealing of the inner blade, and at the same time, the shutter can automatically protect the sealing gasket when in the closed state to reduce the sea breeze erosion of the sealing gasket, and at the same time, the misalignment between the through hole and the connecting hole is used to synchronously achieve the protection of the sound absorbing board.

Description

Technical Field

[0001] The invention relates to the technical field of marine shutters, and in particular to a marine noise reduction shutter. Background Art

[0002] Marine shutters are ventilation devices specially designed for ships. They are used to prevent seawater and rainwater from entering the cabin while providing necessary ventilation. The design of marine shutters needs to take into account the particularity of the marine environment, including salt spray corrosion, strong winds and waves, and the demand for ventilation. Therefore, the shutters are mostly made of carbon steel, stainless steel and other materials with anti-corrosion coatings.

[0003] Chinese patent authorization announcement number CN210087190U discloses a marine pneumatic fast opening and closing wind and rain tight shutter, including a frame, a shutter plate and a transmission compartment, the shutter plate is installed on the inner side of the frame, the transmission compartment is fixedly installed on the inner bottom of the frame, the front surface of the frame is equidistantly provided with first mounting holes around, the shutter plate is driven to move by a short connecting rod, a sealing gasket is provided on the frame, the shutter plate contacts the sealing gasket when closed, the shutter plate is sealed by the sealing gasket, the wind and rain sealing effect is achieved, and the sealing of the shutter is improved.

[0004] The above-mentioned prior art solution has the following shortcomings: since the device only utilizes the function of the sealing gasket to achieve the mutual closure between the louvers, when the cabin is faced with the influence of the sea driving environment, the sealing gasket is easily directly eroded by the sea breeze, thereby reducing the service life of the sealing gasket and further affecting its sealing effect. When the sealing is not perfect, the shutters in the closed state are prone to air leakage, and the air leakage through the gap is prone to generate noise, etc. Summary of the invention

[0005] The object of the present invention is to provide a marine noise reduction shutter to solve the problem in the above background technology that the existing marine noise reduction shutter is not easy to protect the sealing gasket, thereby affecting the closed windproof performance.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a marine noise reduction shutter, comprising a window frame, wherein a plurality of inner blades are evenly spaced inside the window frame, and both sides of each inner blade are rotatably connected to the inner side wall of the window frame through a connecting shaft, a cavity 1 is opened at the bottom end of the inner side of the inner blade, and the interior of the cavity 1 is filled with a sound-absorbing board, a plurality of connecting holes are evenly opened on the outer side of the cavity 1, an outer blade is slidably connected to the outer side of the inner blade, and a plurality of through holes are evenly opened on the outer blade, and the number of through holes is matched with the number of corresponding connecting holes, and the outer blade is slidably connected to the inner blade. , magnet bars are embedded in the upper and lower ends of the outer blades, and the magnetism of the upper and lower adjacent magnet bars is opposite, the top of the inner blade is opened with a second cavity, and the interior of the second cavity is provided with a lifting and adjusting mechanism to adjust the relative position between the outer blade and the inner blade in different opening and closing states of the blinds, sealing gaskets are installed at both ends of the inner blades, and the cross-sections of the upper and lower sealing gaskets are both triangular, and the inner sides of the multiple inner blades are connected with an opening and closing mechanism to control the flipping angle of the inner blades, and the opening and closing mechanism is connected to the lifting and adjusting mechanism so that the flipping and opening and closing of the inner blades synchronously control the sliding direction of the outer blades.

[0007] Preferably, the opening and closing mechanism includes a fixed plate installed on the inner side of the bottom end of the window frame, and a telescopic cylinder is arranged at the top of the fixed plate, connecting blocks are installed on the inner top ends of the plurality of inner blades, and a connecting pull plate is connected to the inner side of the connecting block, the connecting pull plate and the connecting block are hinged to each other, and the bottom end of the connecting pull plate is hinged to the top end of the telescopic cylinder.

[0008] Preferably, the angle between the connecting block and the inner blade is fixed at 65°, the connecting shaft is located above the central axis of the inner blade, and the connecting block is located above the connecting shaft.

[0009] Preferably, the lifting and lowering adjustment mechanism includes a pulling assembly, that is, a plurality of fixing holes are opened on the side of cavity two close to the outer blade, and the plurality of fixing holes are distributed at equal intervals, a pull rope is passed through the inside of the fixing holes, and one end of the pull rope is connected to the inner wall of cavity two, a groove is opened at the inner top end of the outer blade, and the other end of the pull rope is connected to the bottom end of the groove, and the outer movable sleeve of the pull rope located in cavity two is provided with a movable ring, and the number of the pulling assemblies corresponds to the number of inner blades.

[0010] Preferably, when the cross-section of the pull rope is in an inverted L shape, the outer blades slide downward relative to the inner blades, and the through holes and the connecting holes are staggered with each other; when the cross-section of the pull rope is in an inverted U shape, the outer blades slide upward relative to the inner blades, and the through holes and the connecting holes overlap with each other.

[0011] Preferably, the lifting and adjusting mechanism also includes a gas flow component, that is, a miniature gas cylinder connected to the bottom end of the movable ring, and the number of the miniature gas cylinders is adapted to the number of movable rings, the bottom ends of the multiple miniature gas cylinders are interconnected through connecting pipes, the outer sides of the miniature gas cylinders at both ends are connected to hoses, and one end of the hoses passes through the connecting shaft and extends into the inner cavity of the window frame, one-way air inlet pipes are connected between the multiple hoses on one side, and one-way exhaust pipes are connected between the multiple hoses on the other side, and one end of the one-way exhaust pipe and the one-way air inlet pipe are connected to the bottom end of the telescopic cylinder, and control valves are provided on the outside of the one-way air inlet pipe and the one-way exhaust pipe.

[0012] Preferably, when the micro-cylinder is in a compressed state, the cross-section of the pull rope is in an inverted L-shape, and the telescopic cylinder is in an elongated state, and the plurality of inner blades are in a vertically closed state.

[0013] Preferably, an automatic jet device is provided on the outer side of the top end of the window frame, and the automatic jet device comprises a plurality of jet components installed at equal intervals on the outer edge of the top end of the window frame, and an automatic power component connected to the top ends of the plurality of jet components.

[0014] Preferably, the jet assembly includes a fixing ring installed on the top outer edge of the window frame, and a jet tube is fixedly passed through the interior of the fixing ring, a pressure rod is passed through the interior of the jet tube, and the top of the pressure rod is connected to the top of the jet tube by a spring, and a jet pipe is installed at the bottom end of the jet tube, and the jet direction of the jet pipe is toward the outside of the uppermost outer blade.

[0015] Preferably, the automatic power component includes a pressure plate connected to the top of a plurality of pressure rods, water collecting boxes are hinged on both outer sides of the top of the window frame, and elastic pads are installed on the bottom of the water collecting box close to the window frame, steel wires are hinged on both sides of the top of the water collecting box, and the top of the steel wire on the same side is hinged to one side of the bottom end of the pressure plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) By opening the control valve on the one-way air inlet pipe, the air inside the micro-cylinder in each inner blade is introduced into the telescopic cylinder to control the extension of the telescopic cylinder, so that the inner blade is flipped to a vertical state, and the inner blade drives the sealing gasket to fit each other to achieve the closing effect of the shutter, thereby preventing air leakage. Due to the loss of air in the micro-cylinder, the micro-cylinder is compressed, so that the fixing hole is transformed from an inverted U shape to an inverted L shape under the gravity of the outer blade, so that the bottom end of the outer blade blocks the closed gap between the upper and lower inner blades, thereby achieving the outer layer sealing of the inner blade. At the same time, the shutter can automatically protect the sealing gasket when it is in the closed state, so as to reduce the erosion of the sealing gasket by the sea breeze. At the same time, due to the movement of the outer blade, the through hole and the connecting hole are misaligned, thereby preventing the sea breeze from pouring into the cavity when the shutter is closed, so as to simultaneously achieve the protection of the sound absorbing board;

[0018] When the inner blade is in the flipped open state, the one-way exhaust pipe and the one-way air intake pipe are used to coordinate with each other to reallocate the air inside the telescopic cylinder to the micro-cylinder, so that the fixed hole generates an upward pulling force on the outer blade, so that the through hole and the connecting hole coincide with each other. When the wind flows into the room under the guidance of the outer blade, part of the wind passes through the connecting hole and is absorbed by the sound-absorbing board, thereby achieving a certain sound-absorbing and noise-reducing effect.

[0019] (2) Since the blinds are usually closed in rainy weather, a water collecting box can be used to collect rainwater. The water collecting box can be flipped under the action of the gravity of the rainwater, which in turn drives the air inside the jet tube to be compressed and discharged, thereby generating a downward wind force blowing on the outer wall of the top outer blade. The jet action is used to promote the downward sliding of water droplets on the outer wall of the top outer blade, thereby further promoting the sliding speed of water droplets on the outer blade, thereby accelerating the outer blade's guiding effect on rainwater and reducing the inward erosion of rainwater. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the main stereoscopic structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the back-view stereoscopic structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the one-way air intake pipe distribution of the present invention;

[0024] Figure 4 It is a side cross-sectional structural schematic diagram of the present invention;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the inner blade cross section of the present invention;

[0026] Figure 6 It is a schematic diagram of the side cross-sectional structure of the inner blade of the present invention;

[0027] Figure 7 For the present invention Figure 6 Schematic diagram of the structure at A in the middle;

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure of the inner blade of the present invention in a back view;

[0029] Fig. 9 It is a schematic diagram of the three-dimensional structure of the automatic power component of the present invention.

[0030] Explanation of reference numerals in the figure: 1. Window frame; 2. Outer blade; 3. Through hole; 4. Automatic power assembly; 401. Water receiving box; 402. Elastic pad; 403. Steel wire; 404. Press plate; 5. Jet assembly; 501. Fixed ring; 502. Press rod; 503. Spring; 504. Jet pipe; 505. Jet cylinder; 6. Opening and closing mechanism; 601. Fixed plate; 602. Telescopic cylinder; 603. Connecting pull plate; 604. Connecting block; 7. Inner blades; 8. Gas flow assembly; 801. One-way air inlet pipe; 802. One-way exhaust pipe; 803. Hose; 804. Micro cylinder; 805. Connecting pipe; 9. Connecting hole; 10. Cavity one; 11. Sound-absorbing panel; 12. Cavity two; 13. Pulling assembly; 1301. Groove; 1302. Pull rope; 1303. Fixing hole; 1304. Movable ring; 14. Sealing pad; 15. Connecting shaft. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the invention to clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments of the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0032] Embodiment 1: In order to solve the problem that the existing marine noise reduction shutters are difficult to adjust their own placement positions adaptively, the following solution is disclosed, specifically: Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown:

[0033] A marine noise reduction shutter comprises a window frame 1, wherein a plurality of inner blades 7 are evenly spaced inside the window frame 1, and both sides of each inner blade 7 are rotatably connected to the inner side wall of the window frame 1 through a connecting shaft 15, a cavity 10 is provided at the bottom end of the inner side of the inner blade 7, and the interior of the cavity 10 is filled with a sound absorbing board 11, and a plurality of connecting holes 9 are evenly provided on the outer side of the cavity 10, and an outer blade 2 is slidably connected to the outer side of the inner blade 7, and a plurality of through holes 3 are evenly provided on the outer blade 2, and the number of the through holes 3 is matched with the number of the corresponding connecting holes 9, and the outer blade 2 is slidably connected to the inner blade 7, and the upper surface of the outer blade 2 Both ends of the lower part are embedded with magnet bars, and the magnetism of the upper and lower adjacent magnet bars is opposite. The top of the inner blade 7 is provided with a cavity 2 12, and the cavity 2 12 is provided with a lifting and adjusting mechanism to adjust the relative position between the outer blade 2 and the inner blade 7 in different opening and closing states of the blinds. Both ends of the inner blade 7 are installed with sealing gaskets 14, and the cross-sections of the upper and lower sealing gaskets 14 are both triangular. The inner sides of the multiple inner blades 7 are connected with an opening and closing mechanism 6 to control the flipping angle of the inner blade 7. The opening and closing mechanism 6 is connected to the lifting and adjusting mechanism so that the flipping and opening and closing of the inner blade 7 synchronously controls the sliding direction of the outer blade 2;

[0034] The opening and closing mechanism 6 includes a fixed plate 601 installed on the inner side of the bottom end of the window frame 1, and a telescopic cylinder 602 is arranged on the top of the fixed plate 601, and a connecting block 604 is installed on the inner top end of the plurality of inner blades 7, and a connecting pull plate 603 is connected to the inner side of the connecting block 604, the connecting pull plate 603 and the connecting block 604 are hinged to each other, and the bottom end of the connecting pull plate 603 is hinged to the top end of the telescopic cylinder 602;

[0035] The angle between the connecting block 604 and the inner blade 7 is fixed at 65°, the connecting shaft 15 is located above the central axis of the inner blade 7, and the connecting block 604 is located above the connecting shaft 15;

[0036] The lifting and lowering adjustment mechanism includes a pulling assembly 13, that is, a plurality of fixing holes 1303 are provided on the side of the second cavity 12 close to the outer blade 2, and the plurality of fixing holes 1303 are distributed at equal intervals, and a pull rope 1302 is passed through the inside of each of the fixing holes 1303, and one end of the pull rope 1302 is connected to the inner wall of the second cavity 12, a groove 1301 is provided at the inner top of the outer blade 2, and the other end of the pull rope 1302 is connected to the bottom end of the groove 1301, and an outer movable sleeve of the pull rope 1302 located in the second cavity 12 is provided with a movable ring 1304, and the number of the pulling assemblies 13 corresponds to the number of the inner blades 7;

[0037] When the cross section of the pull rope 1302 is in an inverted L shape, the outer blade 2 slides downward relative to the inner blade 7, and the through hole 3 and the connecting hole 9 are staggered with each other. When the cross section of the pull rope 1302 is in an inverted U shape, the outer blade 2 slides upward relative to the inner blade 7, and the through hole 3 and the connecting hole 9 overlap with each other.

[0038] The lifting and lowering adjustment mechanism also includes a gas flow component 8, that is, a micro-cylinder 804 connected to the bottom end of the movable ring 1304, and the number of the micro-cylinders 804 is adapted to the number of the movable rings 1304, the bottom ends of the multiple micro-cylinders 804 are interconnected through a connecting pipe 805, the outer sides of the micro-cylinders 804 at both ends are connected with a hose 803, and one end of the hose 803 passes through the connecting shaft 15 and extends into the inner cavity of the window frame 1, a one-way air inlet pipe 801 is connected between the multiple hoses 803 on one side, and a one-way exhaust pipe 802 is connected between the multiple hoses 803 on the other side, and one end of the one-way exhaust pipe 802 and the one-way air inlet pipe 801 are both connected to the bottom end of the telescopic cylinder 602, and the outside of the one-way air inlet pipe 801 and the one-way exhaust pipe 802 are both provided with a control valve;

[0039] When the micro-cylinder 804 is in a compressed state, the cross-section of the pull rope 1302 is in an inverted L-shape, and the telescopic cylinder 602 is in an extended state, and the plurality of inner blades 7 are in a vertically closed state.

[0040] In this embodiment, when in use, the control valve of the one-way exhaust pipe 802 is started to open, and the control valve of the one-way air inlet pipe 801 is closed, so that the air in the telescopic cylinder 602 is transferred to the multiple micro-cylinders 804, so that the telescopic cylinder 602 is shortened, so that the top of the telescopic cylinder 602 pulls the connecting plate 603 downward, so that the connecting plate 603 pulls the connecting block 604 synchronously, and then the connecting block 604 drives the multiple inner blades 7 to turn around the connecting shaft 15 as the rotation center, so that the inner blades 7 are inclined, that is, the shutter is opened, and because the micro-cylinder 804 is filled with air, the micro-cylinder 804 is extended, and then the micro-cylinder 804 is opened. The air cylinder 804 pushes the movable ring 1304 upward, so that the movable ring 1304 pulls one end of the pull rope 1302 upward, and then the bottom end of the pull rope 1302 pulls the outer blade 2 upward along the outer wall of the inner blade 7. During the upward movement of the outer blade 2, the through hole 3 gradually overlaps with the connecting hole 9, so that the sound absorbing board 11 is exposed. When the blinds are ventilated, the wind flows into the room through the guide of the outer blade 2. When the wind passes through the surface of the outer blade 2, part of it passes through the connecting hole 9 and is absorbed by the sound absorbing board 11, thereby reducing the reflection or transmission noise generated when the wind passes between the upper and lower inner blades 7, so as to achieve a certain noise reduction effect.

[0041] When the one-way air inlet pipe 801 is opened and the one-way air exhaust pipe 802 is closed, the inside of the micro-cylinder 804 is opened and introduced into the telescopic cylinder 602, so that the telescopic cylinder 602 is extended, thereby realizing the vertical closure between the multiple inner blades 7 and making the sealing pads 14 close to each other. In this process, due to the loss of air inside the micro-cylinder 804, the upward pushing force of the micro-cylinder 804 on the pull rope 1302 disappears, so that the outer blades 2 slide downward relative to the inner blades 7, so that the bottom ends of the outer blades 2 block the gaps between the inner blades 7 to protect the sealing pads 14, and at the same time achieve the external sealing effect of the gaps between the inner blades 7, thereby reducing the influx of wind force when the blinds are closed, and is beneficial to improving the sound insulation effect. At the same time, due to the misalignment between the through hole 3 and the connecting hole 9, the sound absorbing panel 11 is closed and protected, reducing the erosion of the sea breeze on the sealing pad 14 and the sound absorbing panel 11.

[0042] Embodiment 2: This embodiment is different from the embodiment 1. The automatic jet mechanism is used to increase the flow rate of the water flow on the outer wall of the outer blade 2 in rainy weather, thereby reducing the infiltration of seawater. Figure 1 , Figure 2 , Figure 4 , Fig. 9 As shown:

[0043] An automatic jet device is provided on the outer side of the top of the window frame 1, and the automatic jet device comprises a plurality of jet components 5 installed at equal intervals on the outer edge of the top of the window frame 1, and an automatic power component 4 connected to the top of the plurality of jet components 5;

[0044] The jet assembly 5 includes a fixing ring 501 installed on the outer edge of the top of the window frame 1, and a jet tube 505 is fixedly penetrated inside the fixing ring 501, a pressure rod 502 is penetrated inside the jet tube 505, and a spring 503 is connected between the top of the pressure rod 502 and the top of the jet tube 505, and a jet pipe 504 is installed at the bottom of the jet tube 505, and the jetting direction of the jet pipe 504 is toward the outside of the uppermost outer blade 2;

[0045] The automatic power component 4 includes a pressure plate 404 connected to the top of a plurality of pressure rods 502, water collecting boxes 401 are hinged on both outer sides of the top of the window frame 1, and elastic pads 402 are installed on the side of the bottom end of the water collecting box 401 close to the window frame 1, steel wires 403 are hinged on both sides of the top of the water collecting box 401, and the top of the steel wire 403 on the same side is hinged to one side of the bottom end of the pressure plate 404.

[0046] In this embodiment, when in use, when rainwater pours into the water receiving box 401, the gravity of the rainwater is used to cause the water receiving box 401 to flip over, which in turn drives the steel wire 403 to produce a downward pulling force on the pressure plate 404, so that the air inside the jet tube 505 is discharged downward, and the jet effect is used to promote the downward sliding rate of rainwater on the outer wall of the outer blade 2, thereby reducing the adhesion time of seawater on the outer blade 2, so as to reduce the corrosion of the outer blade 2, and at the same time help to reduce the infiltration of seawater and improve the protection effect of the blinds.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A marine noise reduction shutter, comprising a window frame (1), characterized in that: The window frame (1) has a plurality of inner blades (7) distributed at equal intervals inside, and both sides of each inner blade (7) are rotatably connected to the inner side wall of the window frame (1) via a connecting shaft (15); a cavity (10) is provided at the bottom end of the inner blade (7), and the cavity (10) is filled with a sound absorbing board (11); a plurality of connecting holes (9) are evenly provided on the outer side of the cavity (10); the outer side of the inner blade (7) is slidably connected to the outer blade (2), and the outer blade (2) is evenly provided with a plurality of through holes (3), and the number of the through holes (3) matches the number of the corresponding connecting holes (9); the outer blade (2) is slidably connected to the inner blade (7), and the upper surface of the outer blade (2) is provided with a plurality of through holes (3). Both ends of the inner blade (7) are embedded with magnet bars, and the magnetism of the upper and lower adjacent magnet bars is opposite. The top of the inner blade (7) is provided with a second cavity (12), and the interior of the second cavity (12) is provided with a lifting and adjusting mechanism to adjust the relative position between the outer blade (2) and the inner blade (7) in different opening and closing states of the blind. Both ends of the inner blade (7) are installed with sealing gaskets (14), and the cross-sections of the upper and lower sealing gaskets (14) are both triangular. The inner sides of the plurality of inner blades (7) are connected with an opening and closing mechanism (6) to control the flipping angle of the inner blade (7). The opening and closing mechanism (6) and the lifting and adjusting mechanism are connected to each other, so that the flipping and opening and closing of the inner blade (7) synchronously control the sliding direction of the outer blade (2); The lifting and lowering adjustment mechanism comprises a gas flow component (8), namely a micro-gas cylinder (804) connected to the bottom end of the movable ring (1304), and the number of the micro-gas cylinders (804) is adapted to the number of the movable rings (1304), the bottom ends of the plurality of micro-gas cylinders (804) are interconnected via a connecting pipe (805), the outer sides of the micro-gas cylinders (804) at both ends are connected to hoses (803), and one end of the hoses (803) passes through the connecting shaft (15) and extends into the inner cavity of the window frame (1), a one-way air inlet pipe (801) is connected between the plurality of hoses (803) on one side, and a one-way exhaust pipe (802) is connected between the plurality of hoses (803) on the other side, and one end of the one-way exhaust pipe (802) and the one-way air inlet pipe (801) are both connected to the bottom end of the telescopic cylinder (602), and control valves are provided on the outside of the one-way air inlet pipe (801) and the one-way exhaust pipe (802).

2. A marine noise reduction shutter according to claim 1, characterized in that: The opening and closing mechanism (6) comprises a fixed plate (601) mounted on the inner side of the bottom end of the window frame (1), and a telescopic cylinder (602) is arranged at the top end of the fixed plate (601), a connecting block (604) is mounted on the inner top end of each of the plurality of inner blades (7), and a connecting pull plate (603) is connected to the inner side of the connecting block (604), the connecting pull plate (603) and the connecting block (604) are hinged to each other, and the bottom end of the connecting pull plate (603) is hinged to the top end of the telescopic cylinder (602).

3. A marine noise reduction shutter according to claim 2, characterized in that: The angle between the connecting block (604) and the inner blade (7) is fixed at 65 degrees, the connecting shaft (15) is located above the central axis of the inner blade (7), and the connecting block (604) is located above the connecting shaft (15).

4. A marine noise reduction shutter according to claim 2, characterized in that: The lifting and lowering adjustment mechanism comprises a pulling assembly (13), namely a plurality of fixing holes (1303) provided on a side of the second cavity (12) close to the outer blade (2), and the plurality of fixing holes (1303) are distributed at equal intervals, a pull rope (1302) is passed through the interior of each of the fixing holes (1303), and one end of the pull rope (1302) is connected to the inner wall of the second cavity (12), a groove (1301) is provided at the inner top end of the outer blade (2), and the other end of the pull rope (1302) is connected to the bottom end of the groove (1301), and an outer movable sleeve of the pull rope (1302) located in the second cavity (12) is provided with a movable ring (1304), and the number of the pulling assemblies (13) corresponds to the number of the inner blades (7).

5. A marine noise reduction shutter according to claim 4, characterized in that: When the cross-section of the pull rope (1302) is in an inverted L-shape, the outer blade (2) slides downward relative to the inner blade (7), and the through hole (3) and the connecting hole (9) are staggered with each other; when the cross-section of the pull rope (1302) is in an inverted U-shape, the outer blade (2) slides upward relative to the inner blade (7), and the through hole (3) and the connecting hole (9) overlap with each other.

6. The marine noise reduction shutter according to claim 1, characterized in that: When the micro-cylinder (804) is in a compressed state, the cross-section of the pull rope (1302) is in an inverted L-shape, and the telescopic cylinder (602) is in an extended state, while the plurality of inner blades (7) are in a vertically closed state.

7. The marine noise reduction shutter according to claim 1, characterized in that: An automatic jet device is arranged on the outer side of the top end of the window frame (1), and the automatic jet device comprises a plurality of jet assemblies (5) installed at equal intervals on the outer edge of the top end of the window frame (1), and an automatic power assembly (4) connected to the top ends of the plurality of jet assemblies (5).

8. A marine noise reduction shutter according to claim 7, characterized in that: The jet assembly (5) comprises a fixing ring (501) mounted on the outer edge of the top end of the window frame (1), and a jet tube (505) is fixedly passed through the fixing ring (501), a pressure rod (502) is passed through the inside of the jet tube (505), and a spring (503) is connected between the top end of the pressure rod (502) and the top end of the jet tube (505), and a jet pipe (504) is mounted at the bottom end of the jet tube (505), and the jetting direction of the jet pipe (504) is toward the outside of the uppermost outer blade (2).

9. A marine noise reduction shutter according to claim 8, characterized in that: The automatic power assembly (4) comprises a plurality of pressure plates (404) connected to the top ends of pressure rods (502); water receiving boxes (401) are hingedly connected to both outer sides of the top end of the window frame (1); and elastic pads (402) are installed on one side of the bottom end of the water receiving box (401) close to the window frame (1); steel wires (403) are hingedly connected to both sides of the top end of the water receiving box (401); and the top ends of the steel wires (403) on the same side are hingedly connected to one side of the bottom end of the pressure plate (404).

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