Weather tight ventilation device

Abstract

The invention relates to the technical field, and discloses a weather-tight ventilation device which comprises a surrounding plate used for being installed on the inner circumferential wall of a ventilation opening. The weather tight cover is movably arranged on the outer side of the surrounding plate and used for closing or opening the ventilation opening, and the weather tight cover is configured to be capable of being movably opened in the direction of the outer side of the ventilation opening; one side edge of the blind window is rotatably connected with the inner wall surface of the surrounding plate, a first locking assembly is arranged between the blind window and the surrounding plate, the first locking assembly is used for locking the blind window at the position covering the ventilation opening, and the blind window is configured to be capable of being rotatably opened towards the inner side direction of the ventilation opening. According to the weather tight ventilation device provided by the invention, the ventilation opening can be quickly converted into a maintenance channel for personnel to go in and out under the condition that a tool is not needed to disassemble the shutter frame, so that the normal ventilation and weather tight protection capability of the fan room are ensured, and the convenience for crew to go in and out of the cabin for equipment maintenance and cleaning is also improved.

Description

Technical Field

[0001] This invention relates to the field of marine engineering technology, and in particular to a windproof and rainproof ventilation device. Background Technology

[0002] In the field of marine engineering, in order to ensure the normal operation of the equipment in the wind turbine room, it is necessary to open ventilation openings on the hull bulkhead and install corresponding ventilation devices to achieve air circulation. Since ships face harsh environments such as wind, waves, rain and snow when sailing at sea, the ventilation openings must have good weather tightness.

[0003] However, in actual shipbuilding, some ship types often compress the spatial layout of auxiliary compartments in order to pursue loading efficiency. For example, a compactly arranged fan room may not be able to have a separate watertight door for crew access. In this case, the aforementioned ventilation openings become the passageways for crew members to enter the compartment for equipment maintenance and cleaning.

[0004] Existing marine louvers typically use bolted frames that are fixed inside the bulkhead. This fixed structure has limitations: when crew members need to enter the cabin through the louvers, they must use tools to remove the bolts from the frame, which is cumbersome and cannot meet the needs of rapid maintenance. Summary of the Invention

[0005] The purpose of this invention is to provide a weatherproof ventilation device that, by setting an outward-opening weatherproof cover and an inward-rotating louver, allows the ventilation opening to be quickly converted into a maintenance passage for personnel to enter and exit without the need to disassemble the louver frame with tools. This ensures normal ventilation and weatherproof protection of the fan room, while also improving the convenience for crew members to enter and exit the cabin for equipment maintenance and cleaning.

[0006] To achieve the above objectives, the present invention provides a windproof and rainproof ventilation device, comprising: A partition panel, the partition panel being installed on the inner peripheral wall of the ventilation opening; A weatherproof cover is movably disposed on the outside of the enclosure panel to close or open the ventilation opening. The weatherproof cover is configured to be movable and openable in the direction of the outward movement of the ventilation opening. A louver, one side of which is rotatably connected to the inner wall of the enclosure, and a first locking assembly is provided between the louver and the enclosure. The first locking assembly is used to lock the louver in a position covering the ventilation opening. The louver is configured to be able to rotate and open inward toward the ventilation opening.

[0007] Furthermore, the louver includes a first frame window and a second frame window, which are respectively hinged to the inner walls of opposite sides of the enclosure, so that the first frame window and the second frame window can be rotated and opened in a split manner toward the inside of the ventilation opening.

[0008] Furthermore, a water baffle is provided at the bottom of the enclosure, and the bottom edge of the louver is higher than the top edge of the water baffle, so as to avoid the water baffle when the louver is rotated inward to open.

[0009] Furthermore, the bottom of the enclosure is provided with a first limiting plate. The water baffle and the first limiting plate are spaced apart in the inward and outward directions. The first locking assembly is provided on the first frame window. The first locking assembly includes a first locking cylinder and a first locking member. The first locking cylinder is provided vertically on the outer side of the first frame window. The first locking member includes a first locking rod and a first grip rod. The first grip rod is provided on the outer peripheral wall of the first locking rod. The first grip rod extends radially along the first locking rod. The first locking rod is slidably inserted into the first locking cylinder from top to bottom. A baffle is provided at the outer edge of the first frame window opposite to its hinge point. When the louvers are closed, both the first frame window and the second frame window are positioned to cover the ventilation opening. The baffle is located inside the second frame window and can prevent the second frame window from rotating inward. The lower end of the first locking rod extends out of the first locking cylinder and is located outside the first limiting plate. The lower end of the first handle abuts against the first locking cylinder.

[0010] Furthermore, a second limiting plate is provided on the inner upper side of the enclosure, and a second locking assembly is also provided on the first frame window. The second locking assembly, the baffle, and the first locking assembly are spaced apart in the vertical direction. The second locking assembly is located above the first locking assembly. The second locking assembly includes a second locking cylinder and a second locking member. The second locking cylinder is provided on the outer side of the first frame window. The second locking member includes a second locking rod and a second grip rod. The second grip rod is provided on the outer peripheral wall of the second locking rod and extends radially along the second locking rod. The second locking rod is slidably inserted into the second locking cylinder. A support rod is provided on the outer side of the first frame window. The second locking rod is slidably inserted into the second locking cylinder from bottom to top. When the blinds are closed, the upper end of the second locking rod extends out of the second locking cylinder and is located outside the second limiting plate, and the lower end of the second grip rod abuts against the support rod.

[0011] Furthermore, the outer periphery of the enclosure is provided with a plurality of fasteners at intervals, and the outer periphery of the weatherproof cover is provided with a plurality of slots, and the plurality of slots are engaged with the plurality of fasteners one by one.

[0012] Furthermore, the fastener includes a support, a screw, and a locking handle. The support is fixedly installed on the outer periphery of the enclosure, one end of the screw is hinged to the support, allowing the screw to swing relative to the support, and the locking handle is threadedly connected to the screw. When the weatherproof cover is closed, the screw can swing and engage in the slot, and turning the locking handle can press it against the outer surface of the weatherproof cover.

[0013] Furthermore, the locking handle is provided with an anti-wear pad on the end face near the weatherseal cover.

[0014] Furthermore, the inner side of the weatherproof cover is provided with a sealing groove with an opening facing the vent, and a sealing strip is placed in the sealing groove. The outer end face of the enclosure is provided with an outwardly extending sealing ring. When the weatherproof cover is closed, the sealing ring can abut against the sealing strip.

[0015] Furthermore, the louver includes a frame and a plurality of louvers spaced vertically within the frame, and the frame is also provided with an insect-proof net.

[0016] Compared with the prior art, the beneficial effects of the weatherproof ventilation device of this invention are as follows: the louvers are designed as movable structures that can rotate and open inwards towards the ventilation opening. When crew members need to enter the fan room for equipment maintenance or cleaning, there is no need to use tools to remove the bolts on the louver frame. They only need to release the lock of the first locking component and push the louvers inwards, thus converting the ventilation opening into a maintenance passage for personnel to enter and exit. The operation is simple and saves operation time. The weatherproof cover opens outwards and the louvers open inwards, ensuring that the louvers are not blocked by the outer weatherproof cover when opening inwards to establish a passage. This achieves independent operation of the two movable parts in space without interference. Attached Figure Description

[0017] Figure 1 This is a top-view cross-sectional view of the windproof and rainproof ventilation device according to an embodiment of the present invention; Figure 2 This is a sectional view from the side of the wind and rain tight ventilation device according to an embodiment of the present invention; Figure 3 yes Figure 2 A magnified view of a section at point A in the middle; Figure 4 yes Figure 2 A magnified view of a section at point B in the middle; Figure 5 This is a cross-sectional view of the hinge joint between the enclosure and the weatherproof cover of the weatherproof ventilation device according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the second locking component and support rod of the windproof and rainproof ventilation device according to an embodiment of the present invention.

[0018] In the picture, 1. Enclosure panel; 11. Water baffle; 12. First limiting plate; 13. Second limiting plate; 14. Sealing ring; 15. Hinge; 16. Fastener; 161. Support; 162. Screw; 163. Locking handle; 1631. Anti-wear pad; 2. Weatherproof cover; 21. Card slot; 22. Sealing groove; 221. Sealing strip; 3. Venetian blinds; 31. First frame window; 311. Baffle; 312. Support rod; 32. Second frame window; 33. Frame; 34. Venetian slats; 35. Insect screen; 4. First locking assembly; 41. First locking cylinder; 42. First locking element; 421. First locking rod; 422. First grip rod; 5. Second locking assembly; 51. Second locking cylinder; 52. Second locking element; 521. Second locking rod; 522. Second grip rod. Detailed Implementation

[0019] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0020] In the description of this invention, the terms "upper," "lower," "left," "right," "front," "rear," "inner," "outer," "lateral," and "longitudinal," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention. Those skilled in the art can understand the specific meaning of these terms in this invention according to the specific circumstances.

[0021] In the description of this invention, the terms "provided with," "set up," "connected," and "placed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0023] The technical solution of the present invention will be further described below with reference to the embodiments and accompanying drawings.

[0024] like Figure 1 , 2 As shown, an embodiment of the present invention provides a windproof and rainproof ventilation device, comprising: Enclosure 1, enclosure 1 is used to be installed on the inner peripheral wall of the ventilation opening; The windproof cover 2 is movably installed on the outside of the enclosure 1 to close or open the ventilation opening. The windproof cover 2 is configured to be able to move and open in the direction of the ventilation opening to the outside. The louver 3 is rotatably connected to the inner wall of the enclosure 1 on one side, and a first locking component 4 is provided between the louver 3 and the enclosure 1. The first locking component 4 is used to lock the louver 3 in the position covering the ventilation opening. The louver 3 is configured to be able to rotate and open in the direction of the ventilation opening.

[0025] Based on the above technical solution, the louver 3 is designed as a movable structure that can rotate and open inwards towards the ventilation opening. When crew members need to enter the fan room for equipment maintenance or cleaning, they do not need to use tools to remove the bolts on the louver 3 frame. They only need to release the lock of the first locking component 4 and push the louver 3 inwards to convert the ventilation opening into a maintenance passage for personnel. The operation is simple and saves operation time. The weatherproof cover 2 opens outwards and the louver 3 opens inwards, ensuring that the louver 3 is not blocked by the outer weatherproof cover 2 when it opens inwards to establish a passage. This achieves independent operation of the two movable parts in space without interference.

[0026] Preferably, such as Figure 1 As shown, the louver 3 includes a first frame window 31 and a second frame window 32. The first frame window 31 and the second frame window 32 are respectively hinged to the inner walls of opposite sides of the enclosure 1, so that the first frame window 31 and the second frame window 32 can be rotated and opened in a split manner toward the inside of the ventilation opening.

[0027] The interior space of a wind turbine room is typically compact, with densely packed equipment. If the louver 3 adopts a single-pane, integral opening structure, its rotation radius when opening inward is large, making it prone to collisions and interference with equipment within the wind turbine room, and it may even be unable to open completely. By splitting the louver 3 into two opposing frame windows 31 and 32, the width of a single window is halved, reducing the rotation radius when opening and lowering the space requirements within the wind turbine room, ensuring full opening even in confined spaces. The opposing structure also halves the weight and lever arm of a single frame, allowing for easier operation by crew members. Simultaneously, it reduces the stress load on the hinges, extending the service life and reliability of the rotating connection structure.

[0028] Preferably, such as Figure 2 , 3 As shown, a water baffle 11 is provided at the bottom of the enclosure 1, and the bottom edge of the louver 3 is higher than the top edge of the water baffle 11 so as to avoid the water baffle 11 when the louver 3 is rotated inward to open.

[0029] More preferably, such as Figure 3 As shown, the bottom of the enclosure 1 is also provided with a first limiting plate 12. The water baffle 11 and the first limiting plate 12 are spaced apart in the inner and outer directions. The first locking assembly 4 is provided on the first frame window 31. The first locking assembly 4 includes a first locking cylinder 41 and a first locking member 42. The first locking cylinder 41 is provided vertically on the outer side of the first frame window 31. The first locking member 42 includes a first locking rod 421 and a first grip rod 422. The first grip rod 422 is provided on the outer peripheral wall of the first locking rod 421. The first grip rod 422 extends radially along the first locking rod 421. The first locking rod 421 is slidably inserted into the first locking cylinder 41 from top to bottom. A baffle 311 is provided at the outer edge of the first frame window 31 opposite to its hinge point. When the louver 3 is closed, the first frame window 31 and the second frame window 32 are both located in positions covering the ventilation opening. The baffle 311 is located inside the second frame window 32 and can prevent the second frame window 32 from rotating inward. The lower end of the first locking rod 421 passes through the first locking cylinder 41 and is located outside the first limiting plate 12. The lower end of the first grip rod 422 abuts against the first locking cylinder 41.

[0030] A baffle 311 is provided on the first frame window 31. When closed, the baffle 311 is located inside the second frame window 32. The baffle 311 can directly stop the inward rotation of the second frame window 32 by utilizing the closed state of the first frame window 31. By simply locking the first frame window 31 with the first locking assembly 4, the second frame window 32 can be kept in the closed position by the physical limiting effect of the baffle 311, without the need for additional locking operations on the second frame window 32. The first locking cylinder 41 cooperates with the first locking rod 421 that can slide up and down. The lower end of the first locking rod 421 cooperates with the first limiting plate 12 fixed on the enclosure 1. This locking structure is simple and robust. After the first locking rod 421 passes through, it is located outside the first limiting plate 12. The shear resistance of the first locking rod 421 resists the inward opening tendency of the first frame window 31. This pin-type structure can maintain its locked state by gravity to counteract the vibration during ship navigation and ensure that the louver 3 remains closed.

[0031] The structure in which the water deflector 11 and the first limiting plate 12 are spaced apart in the inward and outward directions makes the first limiting plate 12 not only serve as the limiting point of the first locking component 4, but also as a water barrier in front of the water deflector 11. Even in severe sea conditions, if a small amount of deck water or splashes cross the outer first limiting plate 12, the inner water deflector 11 can effectively intercept the water flow and prevent it from spreading further into the ventilation opening, thus improving the reliability of the windproof and rainproof ventilation device in preventing backflow of water.

[0032] More preferably, such as Figure 4 , 6 As shown, a second limiting plate 13 is provided on the inner wall of the upper side of the enclosure 1, and a second locking assembly 5 is also provided on the first frame window 31. The second locking assembly 5, the baffle 311, and the first locking assembly 4 are arranged at intervals in the vertical direction. The second locking assembly 5 is located above the first locking assembly 4. The second locking assembly 5 includes a second locking cylinder 51 and a second locking member 52. The second locking cylinder 51 is provided on the outer side of the first frame window 31. The second locking member 52 includes a second locking rod 521 and a second grip rod 522. The second grip rod 522 is provided on the outer peripheral wall of the second locking rod 521. The second grip rod 522 extends radially along the second locking rod 521. The second locking rod 521 is slidably inserted into the second locking cylinder 51. A support rod 312 is provided on the outer side of the first frame window 31. The second locking rod 521 is slidably inserted into the second locking cylinder 51 from bottom to top. When the blinds 3 are closed, the upper end of the second locking rod 521 extends out of the second locking cylinder 51 and is located outside the second limiting plate 13, and the lower end of the second grip rod 522 abuts against the support rod 312.

[0033] A second locking component 5 is added at the top and spaced vertically from the first locking component 4 below, so that the first frame window 31 can be anchored at two points on the top (through the second limiting plate 13) and bottom (through the first limiting plate 12) of the enclosure 1 when closed. This enhances the rigidity of the first frame window 31 in the vertical direction and effectively prevents the first frame window 31 from vibrating or warping under negative pressure during ventilation. This ensures the sealing fit between the upper part of the louver 3 and the enclosure 1 and avoids sealing failure caused by single-point locking.

[0034] Preferably, such as Figure 1 , 2 As shown, multiple fasteners 16 are provided at intervals on the outer periphery of the enclosure 1, and multiple slots 21 are provided on the outer periphery of the weatherproof cover 2. The multiple slots 21 are connected to the multiple fasteners 16 one by one.

[0035] By setting multiple fasteners 16 at intervals along the outer side of the enclosure 1 and corresponding one-to-one with the slots 21 on the weatherproof cover 2, multi-point synchronous pressing of the circumferential edge of the weatherproof cover 2 is achieved. The multi-point distributed locking ensures that the sealing pressure is evenly distributed across the entire contact surface, effectively preventing local sealing failure and ensuring sealing reliability in harsh marine environments.

[0036] More preferably, such as Figure 3 , 4 As shown, the fastener 16 includes a support 161, a screw 162 and a locking handle 163. The support 161 is fixedly installed on the outer periphery of the enclosure 1. One end of the screw 162 is hinged to the support 161, so that the screw 162 can swing relative to the support 161. The locking handle 163 is threadedly connected to the screw 162. When the weatherproof cover 2 is closed, the screw 162 can swing and engage in the slot 21, and turning the locking handle 163 can press it against the outer surface of the weatherproof cover 2.

[0037] The threaded connection between the locking handle 163 and the screw 162 utilizes the force-amplifying principle of screw drive to convert the operator's rotational torque into axial clamping force, forcing the weatherseal 2 to fit tightly. Simultaneously, the threaded structure allows for fine-tuning of the locking mechanism according to the actual structural conditions, ensuring consistent sealing performance during long-term use and effectively preventing leakage.

[0038] More preferably, such as Figure 3 , 4 As shown, the locking handle 163 has an anti-wear pad 1631 on the end face near the weather cover 2.

[0039] Specifically, the anti-abrasion pad 1631 is made of rubber.

[0040] The anti-wear pad 1631 avoids direct friction between the locking handle 163 and the weather seal 2, effectively preventing wear on the anti-corrosion coating on the surface of the weather seal 2, avoiding localized rust caused by coating damage, and extending the service life of the weather seal 2. The anti-wear pad 1631 has a certain elasticity or a high coefficient of friction. When the locking handle 163 is tightened, the anti-wear pad 1631 is compressed and undergoes slight deformation, which can provide a stable axial preload and increase the frictional damping between the contact surfaces, thus acting as an anti-loosening washer. This effectively prevents the locking handle 163 from loosening under vibration or wave impact, ensuring reliable sealing.

[0041] Preferably, such as Figure 3 , 4 As shown in Figure 5, the inner side of the weatherproof cover 2 is provided with a sealing groove 22 with the opening facing the ventilation opening. The sealing groove 22 contains a sealing strip 221. The outer end face of the enclosure 1 is provided with an outwardly extending sealing ring 14. When the weatherproof cover 2 is closed, the sealing ring 14 can abut against the sealing strip 221.

[0042] Specifically, the sealing strip 221 is made of rubber.

[0043] In one specific embodiment, the weatherproof cover 2 is hinged to the surrounding panel 1 via a hinge 15.

[0044] The sealing strip 221 is housed in the sealing groove 22 inside the weatherproof cover 2. The sealing groove 22 forms a physical limit on the sealing strip 221, which effectively prevents the sealing strip 221 from shifting, delaminating or falling off under the long-term friction of opening and closing the cover, thus improving the reliability of the structure. The sealing groove 22 restricts the lateral excessive extension of the sealing strip 221 after being compressed, forcing the elastic material to generate a rebound force in the groove, thereby ensuring the sealing effect.

[0045] Preferably, such as Figure 3 , 4 As shown, the venetian blind 3 includes a frame 33 and a plurality of venetian blades 34 arranged vertically within the frame 33. The frame 33 is also provided with an insect screen 35.

[0046] The insect net 35 is directly fixed to the frame 33, and the insect net 35 becomes part of the louver 3. When the crew needs to pass through the vent, they only need to open the louver 3, and the insect net 35 will rotate inward and open along with the frame 33, without the crew having to disassemble or remove the insect net 35.

[0047] In summary, this embodiment of the invention provides a weatherproof ventilation device, in which the louver 3 is designed as a movable structure that can rotate and open inwards towards the ventilation opening. When crew members need to enter the fan room for equipment maintenance or cleaning, there is no need to use tools to remove the bolts on the louver 3 frame. They only need to release the lock of the first locking component 4 and push the louver 3 inwards, thus converting the ventilation opening into a maintenance passage for personnel to enter and exit. The operation is simple and saves operation time. The weatherproof cover 2 opens outwards and the louver 3 opens inwards, ensuring that the louver 3 is not blocked by the outer weatherproof cover 2 when it opens inwards to establish a passage. This achieves independent operation of the two movable parts in space without interference.

[0048] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A windproof and rainproof ventilation device, characterized in that, include: Enclosure (1), said enclosure (1) is used to be installed on the inner peripheral wall of the ventilation opening; A weatherproof cover (2) is movably disposed on the outside of the enclosure (1) for closing or opening the ventilation opening. The weatherproof cover (2) is configured to be movable and openable in the direction of the ventilation opening. A louver (3) is provided with one side of the louver (3) rotatably connected to the inner wall of the enclosure (1), and a first locking assembly (4) is provided between the louver (3) and the enclosure (1). The first locking assembly (4) is used to lock the louver (3) in a position covering the vent. The louver (3) is configured to be able to rotate and open in the direction of the vent.

2. The windproof and rainproof ventilation device according to claim 1, characterized in that, The louver (3) includes a first frame window (31) and a second frame window (32). The first frame window (31) and the second frame window (32) are respectively hinged to the inner walls of opposite sides of the enclosure (1), so that the first frame window (31) and the second frame window (32) can be rotated and opened in a split manner toward the inside of the ventilation opening.

3. The windproof and rainproof ventilation device according to claim 2, characterized in that, The bottom of the enclosure (1) is provided with a baffle plate (11), and the bottom edge of the louver (3) is higher than the top edge of the baffle plate (11) so as to avoid the baffle plate (11) when the louver (3) is rotated inward to open.

4. The windproof and rainproof ventilation device according to claim 3, characterized in that, The bottom of the enclosure (1) is also provided with a first limiting plate (12). The water baffle (11) and the first limiting plate (12) are spaced apart in the inner and outer directions. The first locking assembly (4) is provided on the first frame window (31). The first locking assembly (4) includes a first locking cylinder (41) and a first locking member (42). The first locking cylinder (41) is provided on the outer side of the first frame window (31) in the vertical direction. The first locking member (42) includes a first locking rod (421) and a first grip rod (422). The first grip rod (422) is provided on the outer peripheral wall of the first locking rod (421). The first grip rod (422) extends radially along the first locking rod (421). The first locking rod (421) is slidably inserted into the first locking cylinder (41) from top to bottom. The first frame window (31) is provided with a baffle (311) at the outer edge opposite to its hinge. When the louver (3) is closed, the first frame window (31) and the second frame window (32) are both located in positions covering the ventilation opening. The baffle (311) is located inside the second frame window (32). The baffle (311) can prevent the second frame window (32) from rotating inward. The lower end of the first locking rod (421) passes through the first locking cylinder (41) and is located outside the first limiting plate (12). The lower end of the first grip rod (422) abuts against the first locking cylinder (41).

5. The windproof and rainproof ventilation device according to claim 4, characterized in that, A second limiting plate (13) is provided on the upper inner wall of the enclosure (1), and a second locking assembly (5) is also provided on the first frame window (31). The second locking assembly (5), the baffle (311), and the first locking assembly (4) are arranged at intervals in the vertical direction. The second locking assembly (5) is located above the first locking assembly (4). The second locking assembly (5) includes a second locking cylinder (51) and a second locking member (52). The second locking cylinder (51) is located on the outside of the first frame window (31). The second locking member (52) includes a second locking rod (521) and a second grip rod (522). The second grip rod (522) is disposed on the outer peripheral wall of the second locking rod (521). The second grip rod (522) extends radially along the second locking rod (521). The second locking rod (521) is slidably inserted into the second locking cylinder (51). A support rod (312) is provided on the outer side of the first frame window (31). The second locking rod (521) is slidably inserted into the second locking cylinder (51) from bottom to top. When the louver (3) is closed, the upper end of the second locking rod (521) extends out of the second locking cylinder (51) and is located outside the second limiting plate (13), and the lower end of the second grip rod (522) abuts against the support rod (312).

6. The windproof and rainproof ventilation device according to claim 1, characterized in that, The outer periphery of the enclosure (1) is provided with a plurality of fasteners (16) at intervals, and the outer periphery of the weatherproof cover (2) is provided with a plurality of slots (21), and the plurality of slots (21) are connected to the plurality of fasteners (16) one by one.

7. The windproof and rainproof ventilation device according to claim 6, characterized in that, The fastener (16) includes a support (161), a screw (162), and a locking handle (163). The support (161) is fixedly installed on the outer periphery of the enclosure (1). One end of the screw (162) is hinged to the support (161), so that the screw (162) can swing relative to the support (161). The locking handle (163) is threadedly connected to the screw (162). When the weatherproof cover (2) is closed, the screw (162) can swing and engage in the slot (21), and rotating the locking handle (163) can press it against the outer surface of the weatherproof cover (2).

8. The windproof and rainproof ventilation device according to claim 7, characterized in that, The locking handle (163) has an anti-wear pad (1631) on its end face near the weather cover (2).

9. The windproof and rainproof ventilation device according to claim 1, characterized in that, The inner side of the weatherproof cover (2) is provided with a sealing groove (22) with an opening facing the vent. The sealing groove (22) contains a sealing strip (221). The outer end face of the enclosure (1) is provided with an outwardly extending sealing ring (14). When the weatherproof cover (2) is closed, the sealing ring (14) can abut against the sealing strip (221).

10. The windproof and rainproof ventilation device according to claim 1, characterized in that, The louver (3) includes a frame (33) and a plurality of louver blades (34) arranged at intervals in the frame (33) along the vertical direction. The frame (33) is also provided with an insect-proof net (35).

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