Airtight air brake for ship

Abstract

An airtight air brake for a ship belongs to the technical field of ship facilities. Comprising an air brake sleeve, a brake base is arranged in the air brake sleeve, a set of ventilation openings are formed in the brake base at intervals, gate plates are rotationally arranged at the ventilation openings respectively, and the multiple gate plates are in mutual linkage and are driven to rotate through a driving mechanism installed outside the air brake sleeve. A shaft body is arranged between the gate plate shaft seats in a penetrating mode, the two ends of the shaft body are rotationally fixed to the front surface of the gate seat through bearing seats respectively, a circle of sealing ring is arranged on the periphery of the gate plate, and when the gate plate and the gate seat are in a closed state, the sealing ring is squeezed by the gate plate and the inner side of the edge of a ventilation opening of the gate seat to form sealed connection. And the gate plate and the gate seat are positioned on the same horizontal plane in a closed state. The air brake has the advantages that sealing can be achieved under the condition that closing force is not needed when the flashboard is closed, the air tightness of the air brake is improved, the service life of the air brake is prolonged, and the appearance effect is good.

Description

Technical Field

[0001] This utility model belongs to the field of marine facilities technology, specifically relating to an airtight wind gate for ships. Background Technology

[0002] Ships are a common mode of transportation, indispensable in industries such as transport and travel, especially for tankers, chemical tankers, liquefied gas carriers, passenger ships, and military vessels. Their normal operation and personnel safety heavily rely on reliable ventilation systems. Ventilation ducts running through all compartments and decks of the ship also constitute potential pathways for the uncontrolled spread of fire, smoke, and hazardous gases within the hull. Therefore, when ventilation ducts need to penetrate critical fireproof bulkheads or bulkheads separating hazardous and safe areas, airtight dampers must be installed to regulate airflow or block airflow and liquid flow. Current airtight dampers mainly employ a structure where the damper edges interlock and are sealed by a sealing strip, or a structure where the damper edges are fitted with sealing strips that press tightly against the damper frame. This requires considerable closing force to achieve an effective and reliable airtight seal. Furthermore, the interlocking sealing of the dampers necessitates the interlacing of the damper and the frame, resulting in a noticeable height difference between the damper and the frame in the airtight state, significantly affecting the damper's appearance. Moreover, the sealing at the rotating position of the damper is often unsatisfactory, thus failing to meet consumer needs.

[0003] In existing technologies, such as the "Marine Fireproof Airlock with Superior Explosion-proof Performance" disclosed in Chinese Utility Model Authorization Announcement No. CN220632814U, and the "Circular Airtight Airlock" provided in Chinese Utility Model Authorization Announcement No. CN205991191U, both adopt the two sealing structures mentioned above, which require a great closing force to achieve the expected sealing effect. In addition, the former seals by interlocking the sealing wings on the side of the gate, which results in bent protrusions at the sealing wings. Furthermore, the sealing wings are easily deformed after long-term pressure, and there is a lack of effective sealing means at the rotation position of the valve plate. In the latter, there is a significant height difference between the rubber sealing ring of the gate plate and the gate seat when they are connected by bolts, which not only easily leads to water accumulation but also affects the appearance.

[0004] In view of the aforementioned problems, it is necessary to design a ship airtight airlock that is simple in structure, low in cost, has good sealing performance, can achieve self-sealing without relying on closing force, and whose gate and seat are on the same horizontal plane when closed. To this end, the applicant has ingeniously designed this technical solution. Utility Model Content

[0005] The purpose of this utility model is to provide a ship airtight ventilator that helps improve the sealing structure of the ventilator and ventilator seat, enabling the ventilator to self-seal when closed and ensuring that the ventilator and ventilator seat are on the same horizontal plane when closed. It also avoids the situation where the sealing effect is poor at the valve plate rotation position, which is beneficial to improving airtightness and service life, as well as improving the appearance of the airtight ventilator.

[0006] The purpose of this utility model is achieved as follows: a ship airtight damper includes a damper sleeve, a damper seat is provided inside the damper sleeve, a set of ventilation openings are spaced apart on the damper seat, and a damper plate is rotatably provided at each ventilation opening. The multiple dampers are interconnected and driven to rotate by a drive mechanism installed outside the damper sleeve. The feature is that a set of damper plate bearing seats are spaced apart on the front surface of each damper plate, and a shaft is passed through each damper plate bearing seat. The two ends of each shaft are rotatably fixed to the front surface of the damper seat by a bearing seat. A sealing ring is provided around each damper plate. When the damper plate and the damper seat are in the closed state, the sealing ring is squeezed by the inner edge of the ventilation opening of the damper plate and the damper seat to form a sealed connection, and the damper plate and the damper seat are located on the same horizontal plane when closed.

[0007] In a specific embodiment of this utility model, the shape of the vent matches the shape of the gate, there is a gap between the vent and the gate, and the sealing ring is in an interference fit with the inner edge of the vent within the gap.

[0008] In another specific embodiment of this utility model, a gate linkage hinge ear is respectively provided on the front surface of the gate, and the gate linkage hinge ears of the plurality of gates are connected by a linkage rod to form a hinge. The linkage rod is provided with a linkage rod hinge ear at the position corresponding to the gate linkage hinge ear, and the linkage rod hinge ear is connected to the corresponding gate linkage hinge ear to form a hinge.

[0009] In another specific embodiment of this utility model, the opening edge of the air damper sleeve is folded with a flange edge.

[0010] In another specific embodiment of this utility model, the gate plate rotates eccentrically on the bearing seat via the gate plate bearing seat and the shaft body.

[0011] In another specific embodiment of this utility model, the thickness of the gate plate is the same as the thickness of the gate seat.

[0012] In a further specific embodiment of this utility model, the drive mechanism is installed on the outside of the damper sleeve, and the shaft of one of the plurality of dampers extends toward the drive mechanism and passes through the damper sleeve to achieve a transmission connection with the drive mechanism.

[0013] In a further specific embodiment of this utility model, the driving mechanism is a worm gear box, and the driving mechanism adopts either a manual rotary driving structure or an automatic motor driving structure.

[0014] In yet another specific embodiment of this utility model, a limiting plate is provided on the inner wall of the air damper sleeve, and the limiting plate is located in the rotation direction of a damper that is close to it.

[0015] In yet another specific embodiment of this utility model, the limiting plate is provided with a limiting adjustment screw for limiting the closed position of the gate.

[0016] After adopting the above-mentioned structure, this utility model uses an eccentric rotation structure of the gate and a self-sealing structure where the gate and the gate seat are on the same horizontal plane. Therefore, when the gate is closed, it can achieve sealing without the need for closing force. Furthermore, the eccentric rotation prevents the valve plate rotation position from participating in the sealing, thereby avoiding the situation where the sealing effect of the valve plate rotation position is poor. This effectively improves the airtightness and service life of the airlock, while also improving the appearance of the airtight airlock. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an airtight damper structure according to an embodiment of the present invention;

[0018] Figure 2 This is a side sectional view of an embodiment of the present invention.

[0019] In the diagram: 1. Air damper sleeve, 11. Dam seat, 111. Ventilation opening, 12. Limit plate, 121. Limit adjusting screw, 13. Flange edge; 2. Damper, 21. Damper shaft seat, 22. Shaft, 23. Bearing seat, 24. Sealing ring, 25. Damper linkage hinge ear; 3. Drive mechanism; 4. Linking rod, 41. Linking rod hinge ear. Detailed Implementation

[0020] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. However, the description of the embodiments is not a limitation on the technical solution. Any formal but not substantive changes made based on the concept of this utility model should be considered within the protection scope of this utility model.

[0021] In the following description, all directional or positional concepts involving up, down, left, right, front, and back are based on... Figure 1 The positions shown are for reference only and should not be construed as a particular limitation on the technical solutions provided by this utility model.

[0022] Please see Figure 1 and combined Figure 2The diagram shows an air damper sleeve 1, inside which a damper seat 11 is provided. The damper seat 11 can be fixedly connected to the inner wall of the air damper sleeve 1 by welding. A set of ventilation openings 111 are spaced apart on the damper seat 11. A gate plate 2 is rotatably provided at each of the ventilation openings 111. The multiple gate plates 2 are interconnected and driven to rotate by a drive mechanism 3 installed outside the air damper sleeve 1.

[0023] The technical innovation of this utility model is as follows: a set of gate bearing seats 21 are respectively arranged at intervals on the front surface of the gate plate 2, and a shaft 22 is respectively inserted between the gate bearing seats 21. The two ends of the shaft 22 are respectively rotatably fixed to the front surface of the gate seat 11 through a bearing seat 23. A sealing ring 24 is arranged around the gate plate 2. When the gate plate 2 and the gate seat 11 are in the closed state, the sealing ring 24 is squeezed by the inner edge of the ventilation opening 111 of the gate plate 2 and the gate seat 11 to form a sealed connection, and the gate plate 2 and the gate seat 11 are located on the same horizontal plane when closed.

[0024] The shape of the aforementioned vent 111 matches the shape of the gate 2, and there is a gap between the aforementioned vent 111 and the gate 2. The aforementioned sealing ring 24 is in an interference fit with the inner edge of the vent 111 within the gap.

[0025] Each of the aforementioned gate plates 2 has a gate plate linkage hinge ear 25 on its front surface. The gate plate linkage hinge ears 25 of the aforementioned gate plates 2 are connected by a linkage rod 4. The aforementioned linkage rod 4 has a linkage rod hinge ear 41 at the position corresponding to the gate plate linkage hinge ear 25. The aforementioned linkage rod hinge ear 41 is connected to the corresponding gate plate linkage hinge ear 25 by a hinge.

[0026] The opening edge of the aforementioned wind gate sleeve 1 is folded with a flange edge 13, and the aforementioned wind gate sleeve 1 is bolted to the ventilation duct on the ship through the flange edge 13.

[0027] The aforementioned gate 2 rotates eccentrically on the bearing seat 23 via the gate shaft seat 21 and the shaft body 22. Since the aforementioned gate shaft seat 21 and the shaft body 22 are located in front of the gate 2, the rotation center of the gate 2 is offset, thus achieving eccentric rotation.

[0028] The thickness of the aforementioned gate plate 2 is the same as the thickness of the aforementioned gate seat 11.

[0029] The aforementioned drive mechanism 3 is installed on the outside of the damper sleeve 1. The shaft 22 of one of the aforementioned gate plates 2 extends toward the drive mechanism 3 and passes through the damper sleeve 1 to achieve a transmission connection with the drive mechanism 3.

[0030] The structure of the aforementioned drive mechanism 3 is not limited in any way. In this embodiment, a worm gear box is preferred. Since the structure of the worm gear box is a well-known prior art and can be purchased directly from the market, it will not be described in detail here. The aforementioned drive mechanism 3 can be a manually rotated drive structure or an automatically driven structure by a motor.

[0031] Please continue reading. Figure 2 A limiting plate 12 is provided on the inner wall of the aforementioned damper sleeve 1. The limiting plate 12 is located in the rotation direction of a damper 2 that is close to it. A limiting adjusting screw 121 is provided on the aforementioned limiting plate 12 for limiting the closed position of the aforementioned damper 2. When the aforementioned damper 2 rotates to be on the same horizontal plane as the valve seat 11, the aforementioned damper 2 abuts against the aforementioned limiting adjusting screw 121 and plays a limiting role.

[0032] Please continue reading. Figure 1 , Figure 2 When the airtight damper needs to be closed, the crew manually rotates the aforementioned drive mechanism 3, causing the shaft 22 connected to the drive mechanism 3 to rotate. The rotation of the shaft 22 drives the gate plate 2 connected to it to rotate eccentrically until the gate plate 2 is inserted into the corresponding vent 111. At the same time, the other valve plates 2 rotate synchronously under the action of the linkage rod 4 and are inserted into the corresponding vent 111. At this time, the aforementioned sealing ring 24 is located between the edge of the gate plate 2 and the vent 111 and is squeezed and deformed, thereby achieving a reliable air seal between the aforementioned valve plate 2 and the valve seat 11 without the need for closing force, that is, achieving self-sealing, and ensuring that the aforementioned gate plate 2 and the valve seat 11 are on the same horizontal plane, thereby greatly improving the appearance effect of the airtight damper in the sealed state.

Claims

1. A ship airtight damper, comprising a damper sleeve (1), wherein a damper seat (11) is provided inside the damper sleeve (1), and a set of ventilation openings (111) are spaced apart on the damper seat (11). A damper plate (2) is rotatably provided at each ventilation opening (111), and the plurality of damper plates (2) are interconnected and driven to rotate by a driving mechanism (3) installed outside the damper sleeve (1), characterized in that: A set of gate bearing seats (21) are provided at intervals on the front surface of the gate (2). A shaft (22) is passed through each of the gate bearing seats (21). The two ends of the shaft (22) are rotatably fixed to the front surface of the gate seat (11) by a bearing seat (23). A sealing ring (24) is provided around the gate (2). When the gate (2) and the gate seat (11) are in the closed state, the sealing ring (24) is squeezed by the inner edge of the ventilation opening (111) of the gate (2) and the gate seat (11) to form a sealed connection. The gate (2) and the gate seat (11) are located on the same horizontal plane when closed.

2. Airtight damper for ships according to claim 1, characterized in that: The shape of the vent (111) matches the shape of the gate (2), and there is a gap between the vent (111) and the gate (2). The sealing ring (24) is in an interference fit with the inner edge of the vent (111) within the gap.

3. An air tight damper for a marine vessel according to claim 1, characterized in that: A gate linkage hinge ear (25) is provided on the front surface of the gate (2). The gate linkage hinge ears (25) of the multiple gates (2) are hinged together by a linkage rod (4). The linkage rod (4) is provided with a linkage rod hinge ear (41) at the position corresponding to the gate linkage hinge ear (25). The linkage rod hinge ear (41) and the corresponding gate linkage hinge ear (25) are hinged together.

4. Airtight damper for ships according to claim 1, characterized in that: The opening edge of the damper sleeve (1) is folded with a flange edge (13).

5. An air tight damper for a marine vessel according to claim 1, characterized in that: The gate (2) rotates eccentrically on the bearing seat (23) via the gate bearing seat (21) and the shaft (22).

6. An air tight damper for a marine vessel according to claim 1, characterized in that: The thickness of the gate plate (2) is the same as the thickness of the gate seat (11).

7. An air tight damper for a marine vessel according to claim 1, characterized in that: The drive mechanism (3) is installed on the outside of the windshield sleeve (1). The shaft (22) of one of the multiple gate plates (2) extends toward the drive mechanism (3) and passes through the windshield sleeve (1) to achieve a transmission connection with the drive mechanism (3).

8. An air tight damper for a marine vessel according to claim 1, characterized in that: The drive mechanism (3) is a worm gear box, and the drive mechanism (3) adopts either a manual rotation drive structure or an automatic motor drive structure.

9. An air tight damper for a marine vessel according to claim 1, characterized in that: A limiting plate (12) is provided on the inner wall of the wind gate sleeve (1), and the limiting plate (12) is located in the rotation direction of a gate plate (2) that is close to it.

10. Airtight damper for ships according to claim 9, characterized in that: The limiting plate (12) is provided with a limiting adjusting screw (121) for limiting the closed position of the gate (2).

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