Ventilation device for cargo hold

Abstract

The utility model relates to a cargo hold ventilation device applied to the technical field of ship cargo hold safety, which realizes that a blocking shed is clamped with the fixed end of a telescopic rod through a clamping sleeve and is fixed through a screw cap, and then a hoop is sleeved above the surface of a ventilation cap body, so that a rotating shaft is positioned above an overflow port, and the hoop is fixed on the ventilation cap body through a screw; at the moment, due to the fact that natural wind is large on the sea, the wind generates acting force on a driving motor to enable the driving motor to rotate around a shaft, the driving motor is connected with a rotating shaft, rotation of the rotating shaft can be transmitted to a rotating disc connected with the other end to drive the rotating disc to rotate, and the rotating disc rotates to drive a blocking shed to be matched with a telescopic rod to shake up and down through a pull rope. Snow falling on the surface of the blocking shed can be shaken in time so that the snow can fall along the inclined face, the section of the blocking shed is larger than the section of the top of the ventilation cap body, the blocking shed is close to the top of the ventilation cap body after being installed, and the overflow opening can be well protected.

Description

Technical Field

[0001] This utility model relates to a cargo hold ventilation system, and more particularly to a cargo hold ventilation device applied in the field of ship cargo hold safety technology. Background Technology

[0002] Cargo hold ventilation systems are an important component of ship cargo hold safety, used to regulate the air pressure balance inside and outside the cargo hold and prevent damage to the cargo hold due to air pressure changes.

[0003] Chinese patent CN216969935U discloses a maintenance-free oil spill containment venting device for oil tankers. This invention effectively prevents oil spills from being ejected through the venting valve, reducing the risk of contaminating the oil tanker deck or causing a fire or explosion.

[0004] When navigating in icy areas, the overflow port and outlet of traditional vent caps are easily frozen by ice and snow. Once frozen, the liquid tank cannot vent properly, which will cause air stagnation. The internal pressure of the liquid tank will increase, which will cause deformation and damage to the liquid tank structure. Utility Model Content

[0005] In view of the above-mentioned prior art, the technical problem to be solved by this utility model is that when navigating in ice-covered areas, the overflow port and outlet of the traditional vent cap are easily frozen by ice and snow. Once frozen, the liquid tank cannot ventilate normally, which will cause air stagnation, increase the internal pressure of the liquid tank, and cause deformation and damage to the liquid tank structure.

[0006] To address the aforementioned problems, this utility model provides a cargo hold ventilation device, comprising a ventilation cap body, an overflow port at the top of the ventilation cap body, a clamp detachably connected to the top of the overflow port via screws, an anti-slip pad fixedly connected to the inner wall of the clamp, two sets of telescopic rods symmetrically fixedly connected to the top of the clamp, a canopy detachably connected to the movable end of the telescopic rods, a support plate symmetrically fixedly connected to the bottom end of the canopy, a sleeve corresponding to the telescopic rod fixedly connected to the support plate, the sleeve engaging with the fixed end of the telescopic rod and secured by a nut, a rotating shaft rotatably connected to the side wall of the clamp above the overflow port, the rotating shaft passing through the clamp, a drive motor and a turntable fixedly connected to both ends of the rotating shaft respectively, a support plate fixedly connected to the side end of the clamp, the drive motor fixed to the support plate, a pull rope with a lock fixedly connected to the side of the turntable away from the clamp, and a retaining ring fixedly connected to the side of the canopy near the turntable, the lock engaging with the retaining ring.

[0007] In the above-mentioned ventilation device, a detachable canopy is installed on the top of the ventilation cap body. During winter, the overflow outlet can be blocked and protected to prevent rain and snow from freezing on it and preventing the liquid tank from ventilating normally. In addition, the canopy can be moved up and down by the drive motor and turntable to clear the snow.

[0008] As a further improvement of this application, a pipe is detachably connected to the bottom of the support plate, and a base plate is symmetrically fixed to the side of the pipe near the canopy, and the base plate is connected to the support plate by screws.

[0009] As a further improvement to this application, multiple air outlets are equidistantly provided on the side wall of the pipeline near the overflow port, and a solenoid valve is installed in the pipeline output end.

[0010] As a further improvement of this application, the pipeline inlet is threadedly connected to a delivery pipe, and the end of the delivery pipe away from the pipeline is connected to the gas outlet of the ship's boiler.

[0011] As another improvement of this application, a compression spring is sleeved on the surface of the movable end of the telescopic rod, and the outer diameter of the compression spring is smaller than the outer diameter of the fixed end of the telescopic rod.

[0012] As a further improvement to this application, the bottom cross-section of the canopy is larger than the top cross-section of the ventilated cap body, and the drive motor is located outside the canopy.

[0013] As a further improvement to this application, a controller for a solenoid valve is fixedly connected to the body of the vent cap, and the length of the movable end of the telescopic rod is equal to the diameter of the turntable.

[0014] In summary, when navigating in icy areas, first, attach the canopy to the fixed end of the telescopic rod using the clamp and secure it with a nut. Then, place the clamp on top of the vent cap body, positioning the rotating shaft above the overflow port. Secure the clamp to the vent cap body with screws. Anti-slip pads are provided between the clamp and the vent cap body to increase friction and prevent mutual wear. At this point, turn on the drive motor to rotate the shaft. The rotation of the shaft will transmit the rotation to the turntable connected to the other end, causing the turntable to rotate. As the turntable rotates, it will cause the canopy to move up and down in conjunction with the telescopic rod via a pull rope. This effectively shakes the snow falling onto the canopy surface, causing it to fall down the slope. Furthermore, the cross-section of the canopy is larger than the top cross-section of the vent cap body. After installation, the canopy is close to the top of the vent cap body, providing good protection for the overflow port. Attached Figure Description

[0015] Figure 1 This is an isometric view of the air-permeable device according to the first embodiment of this application;

[0016] Figure 2 This is a schematic diagram of the installation of the shielding mechanism according to the first embodiment of this application;

[0017] Figure 3 This is a schematic diagram of the heating mechanism structure according to the second embodiment of this application;

[0018] Figure 4 For this application Figure 3 Enlarged view of point A in the middle;

[0019] Figure 5 This is a schematic diagram of the connection between the turntable and the canopy in the first embodiment of this application;

[0020] Figure 6 This is a schematic diagram showing the connection between the canopy and the drive motor in the first embodiment of this application;

[0021] Figure 7 This is a schematic diagram of the telescopic rod structure according to the second embodiment of this application.

[0022] Explanation of the labels in the diagram:

[0023] 1. Ventilation cap body; 2. Clamp; 3. Telescopic rod; 4. Compression spring; 5. Rotating shaft; 6. Turntable; 7. Pull rope; 8. Canopy; 9. Drive motor; 10. Overflow port; 11. Support plate; 12. Sleeve; 13. Base plate; 14. Pipe; 15. Air outlet; 16. Delivery pipe; 17. Snap ring; 18. Lock; 19. Anti-slip mat. Detailed Implementation

[0024] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0025] First implementation method:

[0026] Figures 1-2 and Figures 5-6 The diagram illustrates a cargo hold ventilation device, comprising a ventilation cap body 1, with an overflow port 10 at its top. A clamp 2 is detachably connected to the top of the overflow port 10 via screws. An anti-slip pad 19 is fixedly connected to the inner wall of the clamp 2. Two sets of telescopic rods 3 are symmetrically fixedly connected to the top of the clamp 2. A canopy 8 is detachably connected to the movable end of each telescopic rod 3. A support plate 11 is symmetrically fixedly connected to the bottom end of each canopy 8. A sleeve 12 corresponding to the telescopic rod 3 is fixedly connected to the support plate 11. The fixed end of the retractable rod 3 is clamped and fixed by a nut. The side wall of the clamp 2 is rotatably connected to a rotating shaft 5 located above the overflow port 10, and the rotating shaft 5 passes through the clamp 2. The two ends of the rotating shaft 5 are respectively fixedly connected to a drive motor 9 and a turntable 6. The side end of the clamp 2 is fixedly connected to a support plate, and the drive motor 9 is fixed on the support plate. The side of the turntable 6 away from the clamp 2 is fixedly connected to a pull rope 7 with a lock buckle 18. The end of the canopy 8 near the turntable 6 is fixedly connected to a retaining ring 17, and the lock buckle 18 engages with the retaining ring 17.

[0027] The bottom cross section of the canopy 8 is larger than the top cross section of the ventilated cap body 1, and the drive motor 9 is located outside the canopy 8. The length of the movable end of the telescopic rod 3 is equal to the diameter of the turntable 6.

[0028] Working principle: When navigating in icy areas, first, the canopy 8 is secured to the fixed end of the telescopic rod 3 via the clamp 12 and then fixed with a nut. Next, the clamp 2 is placed on the surface of the vent cap body 1, so that the rotating shaft 5 is located above the overflow port 10. The clamp 2 is fixed to the vent cap body 1 with screws. An anti-slip pad 19 is provided between the clamp 2 and the vent cap body 1, which can increase friction and prevent mutual wear. At this time, the drive motor 9 is turned on to drive the rotating shaft 5 to rotate. The rotation of the rotating shaft 5 will be transmitted to the turntable 6 connected to the other end, thereby driving the turntable 6 to rotate. When the turntable 6 rotates, it will drive the canopy 8 to move up and down with the telescopic rod 3 through the pull rope 7. This can shake the snow falling on the surface of the canopy 8 in time, so that the snow falls down the slope. The cross section of the canopy 8 is larger than the top cross section of the vent cap body 1. After the canopy 8 is installed, it is close to the top of the vent cap body 1, which can provide good protection for the overflow port 10.

[0029] By detachably installing a canopy 8 on the top of the vent cap body 1, the overflow port 10 can be protected during winter to prevent rain and snow from freezing on it and preventing the liquid tank from ventilating properly. In addition, the canopy 8 can be moved up and down by the drive motor 9 and the turntable 6 to clear the snow.

[0030] Second implementation method:

[0031] Figures 3-4 and Figure 7 The bottom of the support plate 11 is detachably connected to a pipe 14. A base plate 13 is symmetrically fixed to the side of the pipe 14 near the canopy 8, and the base plate 13 is connected to the support plate 11 by screws. Multiple air outlets 15 are equidistantly opened on the side wall of the pipe 14 near the overflow port 10. A solenoid valve is installed in the output end of the pipe 14. A delivery pipe 16 is threaded to the input end of the pipe 14, and the end of the delivery pipe 16 away from the pipe 14 is connected to the air outlet of the boiler on the ship. A compression spring 4 is sleeved on the surface of the movable end of the telescopic rod 3, and the outer diameter of the compression spring 4 is smaller than the outer diameter of the fixed end of the telescopic rod 3. A controller for the solenoid valve is fixedly connected to the vent cap body 1.

[0032] Working principle: A compression spring 4 is provided on the movable end surface of the telescopic rod 3. It is designed to allow the canopy 8 to sway in strong winds, so that the telescopic rod 3 and the compression spring 4 can buffer it. If it is prone to freezing in cold weather, the delivery pipe 16 can be threaded to the input end of the pipe 14. Then, the solenoid valve is opened by the controller, and the hot steam generated by the boiler on the ship is delivered to the pipe 14 through the pipe 14. Then, it is evenly sprayed from the air outlet 15 onto the top of the vent cap body 1 to keep the overflow outlet 10 from freezing.

[0033] By installing a pipe 14 at the bottom of the baffle 8 above the overflow port 10, hot steam from the boiler can be used to prevent the overflow port 10 from freezing.

[0034] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A cargo hold ventilation device, comprising a ventilation cap body (1), characterized in that: The ventilated cap body (1) has an overflow port (10) at its top. The top of the overflow port (10) is detachably connected to a clamp (2) by screws. An anti-slip pad (19) is fixedly connected to the inner wall of the clamp (2). Two sets of telescopic rods (3) are symmetrically fixedly connected to the top of the clamp (2). A canopy (8) is detachably connected to the movable end of the telescopic rod (3). A support plate (11) is symmetrically fixedly connected to the bottom end of the canopy (8). A sleeve (12) corresponding to the telescopic rod (3) is fixedly connected to the support plate (11), and the sleeve (12) is engaged and connected to the fixed end of the telescopic rod (3). The clamp (2) is fixed with a nut. The side wall of the clamp (2) is rotatably connected to a rotating shaft (5) located above the overflow port (10). The rotating shaft (5) passes through the clamp (2). The two ends of the rotating shaft (5) are respectively fixedly connected to a drive motor (9) and a turntable (6). The side end of the clamp (2) is fixedly connected to a support plate, and the drive motor (9) is fixed on the support plate. The turntable (6) is fixedly connected to a pull rope (7) with a buckle (18) at the side away from the clamp (2). The canopy (8) is fixedly connected to a retaining ring (17) at the end near the turntable (6), and the buckle (18) engages with the retaining ring (17).

2. The cargo hold ventilation device according to claim 1, characterized in that: The bottom end of the support plate (11) is detachably connected to a pipe (14), and the pipe (14) is symmetrically fixed to a base plate (13) on the side near the canopy (8), and the base plate (13) is connected to the support plate (11) by screws.

3. A cargo hold ventilation device according to claim 2, characterized in that: The pipe (14) has multiple air outlets (15) equidistantly opened on the side wall near the overflow port (10), and a solenoid valve is installed in the output end of the pipe (14).

4. A cargo hold ventilation device according to claim 2, characterized in that: The input end of the pipe (14) is threadedly connected to a conveying pipe (16), and the end of the conveying pipe (16) away from the pipe (14) is connected to the gas outlet of the boiler on the ship.

5. A cargo hold ventilation device according to claim 1, characterized in that: A compression spring (4) is sleeved on the surface of the movable end of the telescopic rod (3), and the outer diameter of the compression spring (4) is smaller than the outer diameter of the fixed end of the telescopic rod (3).

6. A cargo hold ventilation device according to claim 1, characterized in that: The bottom section of the canopy (8) is larger than the top section of the breathable cap body (1), and the drive motor (9) is located outside the canopy (8).

7. A cargo hold ventilation device according to claim 3, characterized in that: The controller of the solenoid valve is fixedly connected to the body (1) of the breathable cap, and the length of the movable end of the telescopic rod (3) is equal to the diameter of the turntable (6).

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