Gravity balance air brake for ship ventilation

Abstract

The invention relates to the technical field of ship ventilation, in particular to a gravity balance air brake for ship ventilation, which comprises a mounting seat, four mounting holes are symmetrically formed in the upper surface of the mounting seat, an air bellow is fixedly connected to the inner wall of the mounting seat, and a plurality of same short columns are symmetrically arranged on the front and rear side walls of the air bellow. According to the air brake, the opening and closing adjusting device is arranged, under the condition that wind power is normal, the tension of the opening and closing spring and the gravity of the opening and closing air plates and the gravity of the balancing weight reach a balanced state, the air brake is in a completely-opened state, and under the condition that the wind power is increased, the opening and closing adjusting device can be used for adjusting the opening and closing of the air brake. The bottom of the opening and closing air plate is driven to be lifted upwards through the adjusting air plate, the L-shaped rod and the closing column, the opening degree of the air brake is reduced, and then the air inlet amount can be reduced, so that the ventilation stability in a cabin is guaranteed, the comfort in the cabin is improved, and a more livable and suitable working environment is provided for workers on a ship.

Description

Technical Field

[0001] The present invention relates to the field of ship ventilation, and specifically to a gravity balance air damper for ship ventilation. Background Art

[0002] During the navigation of a ship, a good ventilation system is crucial for ensuring the air quality in the cabin and maintaining a suitable working environment. As a key component of the ventilation system, the performance of the ship ventilation air damper directly affects the ventilation effect and ship safety. Most of the existing gravity balance air dampers for ventilation on ships have relatively single functions and are insufficient in terms of regulating the air intake volume. It is difficult to automatically adjust the opening degree according to the wind force outside the cabin. When the wind force changes, the air intake volume cannot be accurately controlled, easily resulting in unstable ventilation in the cabin, affecting the comfort and work efficiency of the staff.

[0003] At the same time, in terms of ship fire safety, the existing gravity balance air dampers lack an effective fire response mechanism. Once a fire occurs, the air circulation cannot be blocked in time, resulting in the rapid spread of the fire with the help of air, increasing the difficulty of fire fighting and the ship safety risk. In addition, most air dampers do not have an automatic fire alarm function, making it difficult to notify the staff in time when a fire occurs, delaying the fire handling time, and possibly causing serious casualties and property losses. Summary of the Invention

[0004] The purpose of the present invention is to provide a gravity balance air damper for ship ventilation to solve the problems raised in the above background art.

[0005] The technical solution of the present invention is: a gravity balance air damper for ship ventilation, including a mounting seat. Four mounting holes are symmetrically arranged on the upper surface of the mounting seat. The inner wall of the mounting seat is fixedly connected with an air box. A plurality of identical short columns are symmetrically arranged on the front and rear side walls of the air box. The same opening and closing air plate is fixedly connected between every two symmetrically arranged short columns. The same connecting rod is hinged between every two adjacent opening and closing air plates. Two opening and closing springs are symmetrically arranged on the upper surface of the leftmost opening and closing air plate. One end of each opening and closing spring far away from the opening and closing air plate is fixedly connected with a first fixing block. An opening and closing adjusting device is arranged on the upper surface of the opening and closing air plate. A sealing device is arranged on the lower surface of the opening and closing air plate. A fire alarm device is arranged below the opening and closing air plate.

[0006] Preferably, two grooves are symmetrically opened on the front and rear inner side walls of the air box. The connecting rod is arranged in the grooves. When the device is closed, the contact point between every two opening and closing air plates is higher than the top of the grooves. The short column is rotatably connected with the air box.

[0007] Preferably, the opening and closing adjustment device includes an opening and closing air plate. A closing column is fixedly connected to the upper surface of the leftmost opening and closing air plate. The upper end of the closing column is fixedly connected to an L-shaped rod. A rotating shaft is provided on the side wall of the L-shaped rod. The left end of the rotating shaft is fixedly connected to a second fixing block. Two columns are symmetrically arranged on the left side of the second fixing block. The same long column is fixedly connected between the two columns. The outer surface of the long column is rotatably connected to an adjusting air plate. An L-shaped groove is formed in the right side wall of the adjusting air plate. A sliding block is arranged in the L-shaped groove. A positioning block is fixedly connected to the right side wall of the sliding block. An anti-detachment piece is fixedly connected to the right side wall of the positioning block.

[0008] Preferably, the lower surface of the second fixing block is fixedly connected to the upper surface of the air box. The bottom of the column is fixedly connected to the upper surface of the mounting seat. The bottom of the sliding block is fixedly connected to the upper surface of the L-shaped rod. The sliding block can slide in the L-shaped groove. The positioning block can slide in the L-shaped groove. The L-shaped rod and the rotating shaft are rotatably connected.

[0009] Preferably, the sealing device includes an opening and closing air plate. A steel wire rope is fixedly connected to the lower surface of the opening and closing air plate. The lower end of the steel wire rope is fixedly connected to a hook. A square ring is sleeved on the surface of the hook. A counterweight block is fixedly connected to the bottom of the square ring. Two identical third fixing blocks are fixedly connected to the inner wall of the air box. The same rope placing column is fixedly connected between the two third fixing blocks.

[0010] Preferably, the fire alarm device includes a counterweight block. A clamping jaw is fixedly connected to the rear side wall of the counterweight block. A connecting column is slidably connected to the inner wall of the clamping jaw. The bottom end of the connecting column is fixedly connected to a receiving plate. Two identical connecting springs are fixedly connected to the upper surface of the receiving plate. The same connecting plate is fixedly connected to the upper ends of the two connecting springs. A buzzer is fixedly installed on the upper surface of the receiving plate. An electric wire is placed on the upper surface of the receiving plate. A power supply is fixedly installed on the upper surface of the receiving plate. A contact block is fixedly installed on the upper surface of the receiving plate. Two symmetric fixing plates are fixedly connected to the side wall of the receiving plate.

[0011] Preferably, the upper end of the connecting column is fixedly connected to the inner wall of the air box. Wires are connected between the connecting plate and the buzzer, between the buzzer and the power supply, and between the power supply and the contact block. The upper surface of the fixing plate is fixedly connected to the inner wall of the air box.

[0012] Preferably, the material of the hook is Wood's alloy, and the melting point is between 68°C and 72°C.

[0013] The present invention provides a gravity-balanced air damper for ship ventilation. Compared with the prior art, it has the following improvements and advantages: First, the present invention provides an opening and closing adjustment device. Under normal wind conditions, the tension of the opening and closing spring and the gravity of the opening and closing wind plate and the counterweight block reach a balanced state, so that the wind gate is in a fully open state. When the wind increases, the bottom of the opening and closing wind plate is driven to rise upward by adjusting the wind plate, L-shaped rod, and closing column, reducing the degree of opening of the wind gate, thereby reducing the amount of air intake, thereby ensuring the stability of ventilation in the cabin, increasing the comfort in the cabin, and providing a more livable and suitable working environment for the crew on the ship.

[0014] Second: The present invention, by providing a sealing device, when no fire occurs, the tension of the opening and closing spring and the gravity of the opening and closing wind plate and the counterweight block are in a relatively balanced state, and the wind gate is in an open state to varying degrees. When a fire occurs, when the temperature in the cabin rises to about 70°C, the hook melts, the counterweight block is separated from the opening and closing wind plate, the balanced state is broken, and the opening and closing spring drives the bottom of the opening and closing wind plate to rise until the wind gate is completely closed, blocking the circulation of air, which can effectively prevent the further spread of the fire.

[0015] Thirdly, the present invention provides a fire alarm device. When a fire occurs, the hook melts, and the counterweight block falls along the connecting column to the connecting plate, compressing the connecting spring, so that a closed circuit is formed between the buzzer, power supply, contact block, and connecting plate. The buzzer starts to sound, and a fire alarm is sounded, which makes it convenient for the crew on the ship to deal with the fire in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further explained below in conjunction with the accompanying drawings and examples: Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the opening and closing wind panels of the present invention; Figure 3 It is a structural schematic diagram of the opening and closing adjustment device of the present invention; Figure 4 It is a schematic diagram of the overall structure of the sealing and fire alarm device of the present invention; Figure 5 It is a front structural schematic diagram of the sealing and fire alarm device of the present invention.

[0017] Description of reference numerals: Wherein: 1. mounting base; 2. mounting hole; 3. air box; 4. short column; 5. opening and closing air plate; 6. connecting rod; 7. opening and closing spring; 8. first fixing block; 9. closing column; 10. L-shaped rod; 11. rotating shaft; 12. second fixing block; 13. upright column; 14. long column; 15. adjusting air plate; 16. L-shaped groove; 17. sliding block; 18. positioning block; 19. anti-disengagement piece; 20. steel wire rope; 21. hook; 22. square ring; 23. counterweight; 24. third fixing block; 25. rope placing column; 26. clamping jaw; 27. connecting column; 28. bearing plate; 29. connecting spring; 30. connecting plate; 31. buzzer; 32. electric wire; 33. power supply; 34. contact block; 35. fixing plate; 36. groove. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0019] The present invention provides a gravity balance air brake for ship ventilation by improvement. The technical solution of the present invention is as follows: As Figure 1 - Figure 5 As shown, a gravity balance air brake for ship ventilation includes a mounting base 1. Four mounting holes 2 are symmetrically arranged on the upper surface of the mounting base 1. The inner wall of the mounting base 1 is fixedly connected with an air box 3. A plurality of identical short columns 4 are symmetrically arranged on the front and rear side walls of the air box 3. The same opening and closing air plate 5 is fixedly connected between every two symmetrically arranged short columns 4. The same connecting rod 6 is hinged between every two adjacent opening and closing air plates 5. Two opening and closing springs 7 are symmetrically arranged on the upper surface of the leftmost opening and closing air plate 5. One end of each opening and closing spring 7 far away from the opening and closing air plate 5 is fixedly connected with a first fixing block 8. An opening and closing adjusting device is arranged on the upper surface of the opening and closing air plate 5. A sealing device is arranged on the lower surface of the opening and closing air plate 5. A fire alarm device is arranged below the opening and closing air plate 5.

[0020] Furthermore, two grooves 36 are symmetrically opened on the front and rear inner side walls of the air box 3. The connecting rod 6 is arranged in the groove 36. When the device is closed, the contact point between every two opening and closing air plates 5 is higher than the top of the groove 36. The short column 4 is rotatably connected with the air box 3. When the opening and closing air plate 5 is fully lifted, the entire air brake can be completely closed.

[0021] Further, the opening and closing adjustment device includes an opening and closing air plate 5. A closing column 9 is fixedly connected to the upper surface of the leftmost opening and closing air plate 5. The upper end of the closing column 9 is fixedly connected to an L-shaped rod 10. A rotating shaft 11 is provided on the side wall of the L-shaped rod 10. The left end of the rotating shaft 11 is fixedly connected to a second fixing block 12. Two upright columns 13 are symmetrically arranged on the left side of the second fixing block 12. The same long column 14 is fixedly connected between the two upright columns 13. An adjusting air plate 15 is rotatably connected to the outer surface of the long column 14. An L-shaped groove 16 is formed in the right side wall of the adjusting air plate 15. A sliding block 17 is arranged in the L-shaped groove 16. A positioning block 18 is fixedly connected to the right side wall of the sliding block 17. An anti-detachment piece 19 is fixedly connected to the right side wall of the positioning block 18. When the upper surface of the adjusting air plate 15 is affected by wind, the right side of the adjusting air plate 15 is pressed downward, and then an upward pulling force is given to the bottom of the opening and closing air plate 5 through the L-shaped rod 10, thereby adjusting the opening and closing degree of the air brake.

[0022] Further, the lower surface of the second fixing block 12 is fixedly connected to the upper surface of the air box 3. The bottom of the upright column 13 is fixedly connected to the upper surface of the mounting base 1. The bottom of the sliding block 17 is fixedly connected to the upper surface of the L-shaped rod 10. The sliding block 17 can slide in the L-shaped groove 16. The positioning block 18 can slide in the L-shaped groove 16. The L-shaped rod 10 is rotatably connected to the rotating shaft 11, so that when the L-shaped rod 10 is subjected to a pressing force, it can maintain contact with the adjusting air plate 15 and continuously transmit the change of wind force to the opening and closing air plate 5.

[0023] Further, the sealing device includes an opening and closing air plate 5. A steel wire rope 20 is fixedly connected to the lower surface of the opening and closing air plate 5. The lower end of the steel wire rope 20 is fixedly connected to a hook 21. A square ring 22 is sleeved on the surface of the hook 21. A counterweight 23 is fixedly connected to the bottom of the square ring 22. Two identical third fixing blocks 24 are fixedly connected to the inner wall of the air box 3. The same rope placing column 25 is fixedly connected between the two third fixing blocks 24, so that the opening and closing air plate 5 can maintain a stable opening state under the pulling force of the opening and closing spring 7 and the gravity of the counterweight 23, and thus the cabin can be ventilated.

[0024] Further, the fire alarm device includes a counterweight 23. A clamping claw 26 is fixedly connected to the rear side wall of the counterweight 23. A connecting column 27 is slidably connected to the inner wall of the clamping claw 26. The bottom end of the connecting column 27 is fixedly connected to a receiving plate 28. Two identical connecting springs 29 are fixedly connected to the upper surface of the receiving plate 28. The same connecting plate 30 is fixedly connected to the upper ends of the two connecting springs 29. A buzzer 31 is fixedly installed on the upper surface of the receiving plate 28. An electric wire 32 is placed on the upper surface of the receiving plate 28. A power supply 33 is fixedly installed on the upper surface of the receiving plate 28. A contact block 34 is fixedly installed on the upper surface of the receiving plate 28. Two symmetric fixing plates 35 are fixedly connected to the side wall of the receiving plate 28. When a fire does not occur, the connecting plate 30 does not contact the contact block 34 and the buzzer 31 does not work.

[0025] Further, the upper end of the connecting column 27 is fixedly connected to the inner wall of the bellows 3. Wires 32 are connected between the communicating plate 30 and the buzzer 31, between the buzzer 31 and the power source 33, and between the power source 33 and the contact block 34. The upper surface of the fixing plate 35 is fixedly connected to the inner wall of the bellows 3. In case of a fire, the counterweight 23 presses the communicating spring 29, the communicating plate 30 contacts the contact block 34, the circuit forms a closed loop, and the buzzer 31 gives an alarm.

[0026] Further, the hook 21 is made of Wood's alloy with a melting point between 68°C and 72°C. When a fire occurs and the temperature in the cabin rises, the hook 21 can melt, the counterweight 23 is separated from the opening and closing air plate 5, and the opening and closing air plate 5 can be fully closed under the pulling force of the opening and closing spring 7, thereby preventing air from entering.

[0027] Working principle: When using this device, place the mounting base 1 on the top of the cabin and fix it through the mounting holes 2. Under normal air volume conditions, the opening and closing air plate 5 is in a fully open state under the combined action of the pulling force of the opening and closing spring 7 and the gravity of the counterweight 23, and the entire air damper is in a fully open state, and normal ventilation can be carried out in the cabin; when the external wind force increases, the adjusting air plate 15 is pressed by the wind force, the adjusting air plate 15 rotates clockwise around the long column 14, the right side of the adjusting air plate 15 moves downward, thereby pressing the L-shaped rod 10, the L-shaped rod 10 rotates counterclockwise around the rotating shaft 11, the right end of the L-shaped rod 10 moves upward, and then pulls the bottom of the opening and closing air plate 5 upward through the closing column 9, and the opening degree of the air damper decreases. When the external wind force decreases, the pulling force on the opening and closing air plate 5 decreases, and under the action of the gravity of the counterweight 23, the bottom of the opening and closing air plate 5 moves downward, and the opening degree of the air damper increases, so as to ensure the stability of the air intake volume of the cabin under the change of the external wind force; in case of a fire in the cabin, when the temperature in the cabin rises to about 70°C, the hook 21 melts, the counterweight 23 is separated from the opening and closing air plate 5, the gravity of the opening and closing air plate 5 itself is less than the upward pulling force, the balance state is broken, and the bottom of the opening and closing air plate 5 moves upward until the air damper is completely closed, thereby blocking the flow of external air to the cabin where the fire occurs; after the counterweight 23 is separated from the opening and closing air plate 5, it vertically drops onto the communicating plate 30 along the connecting column 27. Under the action of the gravity of the counterweight 23, the communicating spring 29 is compressed, and the communicating plate 30 moves downward until it contacts the contact block 34, and a closed loop is formed among the buzzer 31, the power source 33, the contact block 34, and the communicating plate 30, and the buzzer 31 works to emit an alarm sound to remind the staff.

[0028] The foregoing description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A gravity-balanced air damper for ship ventilation, comprising a mounting base (1), characterized in that: Four mounting holes (2) are symmetrically arranged on the upper surface of the mounting base (1). The inner wall of the mounting base (1) is fixedly connected with an air box (3). A plurality of identical short columns (4) are symmetrically arranged on the front and rear side walls of the air box (3). The same opening and closing air plate (5) is fixedly connected between every two symmetrically arranged short columns (4). The same connecting rod (6) is hinged between every two adjacent opening and closing air plates (5). Two opening and closing springs (7) are symmetrically arranged on the upper surface of the leftmost opening and closing air plate (5). One end of each opening and closing spring (7) far away from the opening and closing air plate (5) is fixedly connected with a first fixing block (8). An opening and closing adjusting device is arranged on the upper surface of the opening and closing air plate (5). A sealing device is arranged on the lower surface of the opening and closing air plate (5). A fire alarm device is arranged below the opening and closing air plate (5).

2. The gravity balance air damper for ship ventilation according to claim 1, characterized in that: Two grooves (36) are symmetrically formed in the front and rear inner side walls of the air box (3). The connecting rod (6) is arranged in the groove (36). When the device is closed, the contact point between every two opening and closing air plates (5) is higher than the top of the groove (36). The short column (4) is rotatably connected with the air box (3).

3. The gravity balance air damper for ship ventilation according to claim 1, characterized in that: The opening and closing adjusting device includes the opening and closing air plate (5). A closing column (9) is fixedly connected to the upper surface of the leftmost opening and closing air plate (5). The upper end of the closing column (9) is fixedly connected with an L-shaped rod (10). A rotating shaft (11) is arranged on the side wall of the L-shaped rod (10). The left end of the rotating shaft (11) is fixedly connected with a second fixing block (12). Two columns (13) are symmetrically arranged on the left side of the second fixing block (12). The same long column (14) is fixedly connected between the two columns (13). An adjusting air plate (15) is rotatably connected to the outer surface of the long column (14). An L-shaped groove (16) is formed in the right side wall of the adjusting air plate (15). A sliding block (17) is arranged in the L-shaped groove (16). A positioning block (18) is fixedly connected to the right side wall of the sliding block (17). An anti-detachment piece (19) is fixedly connected to the right side wall of the positioning block (18).

4. The gravity-balanced air damper for ship ventilation according to claim 3, characterized in that: The lower surface of the second fixing block (12) is fixedly connected to the upper surface of the air box (3). The bottom of the column (13) is fixedly connected to the upper surface of the mounting base (1). The bottom of the sliding block (17) is fixedly connected to the upper surface of the L-shaped rod (10). The sliding block (17) can slide in the L-shaped groove (16). The positioning block (18) can slide in the L-shaped groove (16). The L-shaped rod (10) is rotatably connected with the rotating shaft (11).

5. The gravity balance air damper for ship ventilation according to claim 1, characterized in that: The closed device includes an opening and closing air plate (5). A steel rope (20) is fixedly connected to the lower surface of the opening and closing air plate (5). The lower end of the steel rope (20) is fixedly connected to a hook (21). A square ring (22) is sleeved on the surface of the hook (21). A counterweight (23) is fixedly connected to the bottom of the square ring (22). Two identical third fixing blocks (24) are fixedly connected to the inner wall of the air box (3). The same rope placing column (25) is fixedly connected between the two third fixing blocks (24).

6. The gravity-balanced air damper for ship ventilation according to claim 5, wherein: The fire alarm device includes a counterweight (23). A clamping jaw (26) is fixedly connected to the rear side wall of the counterweight (23). A connecting column (27) is slidably connected to the inner wall of the clamping jaw (26). The bottom end of the connecting column (27) is fixedly connected to a receiving plate (28). Two identical connecting springs (29) are fixedly connected to the upper surface of the receiving plate (28). The same connecting plate (30) is fixedly connected to the upper ends of the two connecting springs (29). A buzzer (31) is fixedly installed on the upper surface of the receiving plate (28). A wire (32) is placed on the upper surface of the receiving plate (28). A power supply (33) is fixedly installed on the upper surface of the receiving plate (28). A contact block (34) is fixedly installed on the upper surface of the receiving plate (28). Two symmetrical fixing plates (35) are fixedly connected to the side wall of the receiving plate (28).

7. The gravity balance air damper for ship ventilation according to claim 6, wherein: The upper end of the connecting column (27) is fixedly connected to the inner wall of the air box (3). Wires (32) are connected between the connecting plate (30) and the buzzer (31), between the buzzer (31) and the power supply (33), and between the power supply (33) and the contact block (34). The upper surface of the fixing plate (35) is fixedly connected to the inner wall of the air box (3).

8. The gravity balance air damper for ship ventilation according to claim 5, characterized in that: The material of the hook (21) is Wood's alloy, and the melting point is between 68°C and 72°C.

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