Ship ventilation opening protection device
By designing a linked protective window frame and louver structure for the ship's ventilation openings, the problem of traditional ventilation openings being susceptible to marine environmental influences has been solved. This achieves synchronized opening and closing and double sealing, improving the protective effect and ease of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG WANGONG IND CO LTD
- Filing Date
- 2025-05-13
- Publication Date
- 2026-04-24
AI Technical Summary
Traditional ship ventilation protection devices are susceptible to seawater backflow, rainwater infiltration, and blockage by foreign objects in complex marine environments. Furthermore, their opening and closing operations are inconvenient, affecting the reliability and safety of the system.
A protective device for ship ventilation openings was designed, which adopts a linkage structure of protective window frame, louver shaft, rotating louver, driven gear, guide rail, rack and pinion and protective sealing cover to realize the synchronous opening and closing of louver and sealing cover. The synchronous flipping of louver and convenient operation of sealing cover are realized by rotating linkage and gear transmission system.
It achieves complete sealing of the protective window frame, improving the protective effect, and enhances the protective performance through a double sealing structure, simplifies the opening and closing operation, and improves the reliability and safety of the system.
Smart Images

Figure CN224159417U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ventilation opening protection technology, and in particular to a protective device for ship ventilation openings. Background Technology
[0002] As the core carrier of maritime transportation and operations, the stability and safety of the internal cabin environment of ships directly affect the health of crew members, equipment lifespan, and navigation efficiency. The ventilation system, as one of the ship's important auxiliary systems, undertakes the critical tasks of regulating cabin temperature and humidity, removing harmful gases, and ensuring air circulation. Among these systems, the vents, as the "throat" of air exchange, have their protective performance directly affecting the system's reliability and the ship's operational safety.
[0003] In traditional ship design, ventilation openings are typically protected using simple louvers or metal grilles. However, these structures reveal significant shortcomings in complex marine environments: open designs are susceptible to problems such as seawater backflow, rainwater infiltration, and blockage by foreign objects. Therefore, to improve the protective effect of ventilation openings, protective covers are often added. However, current protective covers lack linkage with the louvers, often requiring the louvers to be closed before the protective cover can be closed, making opening and closing inconvenient and affecting efficiency. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a protective device for ship ventilation openings, which effectively solves the deficiencies of the prior art.
[0005] To achieve the above objectives, one embodiment of this utility model provides a protective device for a ship's ventilation opening, including a protective window frame. A plurality of louvered shafts are rotatably connected to the inner wall of the protective window frame. A plurality of rotating louvers are fixedly connected to the outer wall of the plurality of louvered shafts. Both ends of the plurality of louvered shafts extend through both sides of the outer wall of the protective window frame. Driven gears are fixedly connected to both ends of the plurality of louvered shafts. Guide rails are fixedly connected to one edge of one side of the outer wall of the protective window frame. Racks are slidably connected to the inner walls of two guide rails. The racks simultaneously mesh with the plurality of driven gears. A rotating shaft is rotatably connected to the center of the bottom of both sides of the outer wall of the protective window frame. A drive gear is fixedly connected to one side of the rotating shaft. A rotating connecting rod is fixedly connected to the end of the rotating shaft away from the protective window frame. A protective sealing cover is provided on the outside of the protective window frame. Strip-shaped connecting holes are opened at the center of the top of both sides of the protective sealing cover. The center of the top of the two rotating connecting rods is slidably and rotatably connected to the strip-shaped connecting holes on both sides of the protective sealing cover.
[0006] Preferably, in any of the above schemes, the length of each of the rotating louvers is adapted to the width of the inner wall of the protective window frame, the sum of the widths of the rotating louvers is greater than the height of the inner wall of the protective window frame, and the edges of the rotating louvers overlap when they rotate vertically.
[0007] The technical effect achieved by adopting the above solution is that by using this solution, several rotating louvers can be flipped and closed to completely seal the inner wall of the protective window frame, thereby improving the protective effect.
[0008] Preferably, in any of the above embodiments, the dimensions of the inner wall of the protective sealing cover are adapted to the dimensions of the outer wall of the protective window frame, and control handles are fixedly connected to both edges of one side of the outer wall of the protective sealing cover.
[0009] The technical effect achieved by adopting the above solution is that the protective sealing cover can tightly cover the protective window frame, and the opening and closing operation can be easily carried out by operating the handle.
[0010] Preferably, in any of the above embodiments, the length of the rack is greater than the distribution length of the plurality of driven gears, and the bottom end of the rack protrudes from the bottom of the drive gear.
[0011] The technical effect achieved by adopting the above scheme is that by using this scheme, the rack can have the transmission length after assembly, and can simultaneously drive several driven gears to rotate synchronously.
[0012] Preferably, in any of the above solutions, the length of the strip-shaped connecting hole is greater than the depth to which the protective sealing cover is inserted into the protective window frame, and the protective sealing cover, when fully closed, can drive several of the rotating louvers to close vertically.
[0013] The technical effect achieved by adopting the above solution is that by using this solution, the protective sealing cover can be pulled back after assembly, and the protective sealing cover can be completely removed.
[0014] This utility model has the following advantages:
[0015] 1. When the protective sealing cover of this ship's ventilation opening is pulled away from the protective window frame and lowered to the bottom, the rotating connecting rod rotates downward, thereby driving the rotating shaft to rotate. This causes the drive gear to drive the rack to slide upward, thereby causing several driven gears to rotate simultaneously. This causes several rotating louvers to flip open, so that the protective sealing cover and several rotating louvers open synchronously. Similarly, when the protective sealing cover is closed, it can drive several rotating louvers to flip and close, achieving synchronous opening and closing, which is convenient for operation.
[0016] 2. The ship's ventilation outlet protection device improves the sealing and protection effect through the double sealing protection of rotating louvers and protective sealing covers. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a side view of the structure of this utility model.
[0019] In the diagram: 1-protective window frame, 2-louver shaft, 3-rotating louver, 4-driven gear, 5-guide rail, 6-rack, 7-rotating shaft, 8-drive gear, 9-rotating connecting rod, 10-protective sealing cover, 11-control handle, 12-strip connecting hole. Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.
[0021] like Figures 1 to 2 As shown, a protective device for a ship's ventilation opening includes a protective window frame 1. A plurality of louvered shafts 2 are rotatably connected to the inner wall of the protective window frame 1. A plurality of rotating louvers 3 are fixedly connected to the outer wall of the plurality of louvered shafts 2. Both ends of the plurality of louvered shafts 2 extend through both sides of the outer wall of the protective window frame 1. Driven gears 4 are fixedly connected to both ends of the plurality of louvered shafts 2. Guide rails 5 are fixedly connected to one edge of one side of the outer wall of the protective window frame 1. Racks 6 are slidably connected to the inner walls of both guide rails 5. The racks 6 simultaneously mesh with the plurality of driven gears 4. A rotating shaft 7 is rotatably connected to the center of the bottom of both sides of the outer wall of the protective window frame 1. A drive gear 8 is fixedly connected to one side of the rotating shaft 7. A rotating connecting rod 9 is fixedly connected to the end of the rotating shaft 7 away from the protective window frame 1. A protective sealing cover 10 covers the outer surface of the protective window frame 1. Strip-shaped connecting holes 12 are opened at the center of the top of both sides of the protective sealing cover 10. The center of the top of the two rotating connecting rods 9 are slidably and rotatably connected to the strip-shaped connecting holes 12 on both sides of the protective sealing cover 10.
[0022] As an optional technical solution of this utility model, the length of several rotating louvers 3 is adapted to the width of the inner wall of the protective window frame 1, the sum of the widths of several rotating louvers 3 is greater than the height of the inner wall of the protective window frame 1, and the edges of several rotating louvers 3 are staggered and attached when they rotate vertically, so that the inner wall of the protective window frame 1 can be completely sealed after several rotating louvers 3 are flipped and closed, thereby improving the protective effect.
[0023] As an optional technical solution of this utility model, the inner wall of the protective sealing cover 10 is adapted to the outer wall of the protective window frame 1. The edges of both sides of one side of the outer wall of the protective sealing cover 10 are fixedly connected with the operating handle 11, so that the protective sealing cover 10 can tightly cover the protective window frame 1 and the opening and closing operation can be conveniently performed through the operating handle 11.
[0024] As an optional technical solution of this utility model, the length of the rack 6 is greater than the distribution length of the driven gears 4, and the bottom end of the rack 6 protrudes from the bottom of the drive gear 8, so that the rack 6 has a transmission length after assembly, and can simultaneously drive the driven gears 4 to rotate synchronously.
[0025] As an optional technical solution of this utility model, the length of the strip-shaped connecting hole 12 is greater than the depth of the protective sealing cover 10 when it is inserted into the protective window frame 1. After the protective sealing cover 10 is fully covered, it can drive several rotating louvers 3 to close vertically, so that the protective sealing cover 10 has a rearward pulling space after assembly, and the protective sealing cover 10 can be completely removed.
[0026] The following steps are required when using this ship's ventilation vent protection device:
[0027] 1) When the protective sealing cover 10 is pulled away from the protective window frame 1 and lowered to the bottom, the connecting rod 9 is rotated downwards, thereby driving the rotating shaft 7 to rotate;
[0028] 2) The drive gear 8 drives the rack 6 to slide upward, thereby causing several driven gears 4 to rotate simultaneously, thereby causing several rotating louvers 3 to flip open, so that the protective sealing cover 10 and several rotating louvers 3 open synchronously.
[0029] 3) When the protective sealing cover 10 is on, it can drive several rotating louvers 3 to flip in the opposite direction and close, so as to achieve synchronous opening and closing.
[0030] In summary, when the protective sealing cover 10 is pulled away from the protective window frame 1 and lowered to the bottom, the rotating connecting rod 9 rotates downward, thereby driving the rotating shaft 7 to rotate. This causes the drive gear 8 to drive the rack 6 to slide upward, thereby causing several driven gears 4 to rotate simultaneously. This causes several rotating louvers 3 to flip open, so that the protective sealing cover 10 and several rotating louvers 3 open synchronously. Similarly, when the protective sealing cover 10 is closed, it can drive several rotating louvers 3 to flip and close, achieving synchronous opening and closing, which is convenient for operation. Through the double sealing protection of rotating louvers 3 and protective sealing cover 10, the sealing and protection effect can be improved.
[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A protective device for ship ventilation openings, characterized in that: The system includes a protective window frame (1), with a plurality of louvered shafts (2) rotatably connected to the inner wall of the protective window frame (1). A plurality of rotating louvers (3) are fixedly connected to the outer wall of the plurality of louvered shafts (2). Both ends of the plurality of louvered shafts (2) extend through both sides of the outer wall of the protective window frame (1). Both ends of the plurality of louvered shafts (2) are fixedly connected to driven gears (4). Guide rails (5) are fixedly connected to one edge of both sides of the outer wall of the protective window frame (1). Racks (6) are slidably connected to the inner walls of both guide rails (5). The racks (6) are simultaneously connected to the plurality of driven gears (4). The protective window frame (1) is connected by a rotating shaft (7) at the center of the bottom of both sides of the outer wall. A drive gear (8) is fixedly connected to one side of the rotating shaft (7). A rotating connecting rod (9) is fixedly connected to the end of the rotating shaft (7) away from the protective window frame (1). The protective window frame (1) is covered with a protective sealing cover (10). A strip-shaped connecting hole (12) is opened at the center of the top of both sides of the protective sealing cover (10). The center of the top of the two rotating connecting rods (9) slides and rotates with the strip-shaped connecting holes (12) on both sides of the protective sealing cover (10).
2. The ship ventilation outlet protection device according to claim 1, characterized in that: The length of each of the rotating louvers (3) is adapted to the width of the inner wall of the protective window frame (1), the sum of the widths of the rotating louvers (3) is greater than the height of the inner wall of the protective window frame (1), and the edges of the rotating louvers (3) are staggered and fitted when they rotate vertically.
3. The ship ventilation outlet protection device according to claim 2, characterized in that: The inner wall of the protective sealing cover (10) is adapted to the outer wall of the protective window frame (1), and the edges of both sides of one side of the outer wall of the protective sealing cover (10) are fixedly connected with operating handles (11).
4. The ship ventilation outlet protection device according to claim 3, characterized in that: The length of the rack (6) is greater than the distribution length of the driven gears (4), and the bottom end of the rack (6) protrudes from the bottom of the drive gear (8).
5. The ship ventilation outlet protection device according to claim 4, characterized in that: The length of the strip-shaped connecting hole (12) is greater than the depth of the protective sealing cover (10) covering the protective window frame (1). After the protective sealing cover (10) is fully covered, it can drive several of the rotating louvers (3) to close vertically.