A pipe jacking construction ventilation apparatus

Abstract

The utility model discloses a kind of ship pipe construction ventilation equipment, it is related to pipe construction ventilation technical field, comprising: ventilation pipe and the first universal flexible air suction arm and the second universal flexible air suction arm of angle can be adjusted at will and air suction arm connecting pipe, the utility model has the beneficial effect that: first universal flexible air suction arm can be installed in the outside of air suction arm mounting connector by the clamping mechanism outside air suction arm connecting head, after being pushed by the push rod and push plate inside air suction arm connecting head after first sealing cover plate is removed to the plugging of ventilation hole, first universal flexible air suction arm and ventilation pipe can be made into through in, so that when ventilation pipe can be ventilated to different electric welding construction position by first universal flexible air suction arm and second universal flexible air suction arm in ventilation process, harmful gas generated by electric welding and harmful gas are extracted and discharged outside by suction, to reduce the harmful gas gathering of welding construction position, improve construction environment quality and improve the efficiency of ship berth closing.

Description

Technical Field

[0001] This utility model relates to the field of ventilation technology for tunnel construction, specifically a ventilation device for tunnel construction on a ship. Background Technology

[0002] The 62,000 DWT multipurpose heavy-lift vessel is currently the world's largest multipurpose heavy-lift vessel in terms of deadweight tonnage. It has five large-opening box-type cargo holds with continuous flat hatch covers and an effective loading area of ​​166 × 32 square meters.

[0003] During the installation of a 62,000 DWT heavy-lift vessel on the slipway, our company encountered a problem during on-site welding operations. Because the ballast tanks on the side of the vessel are deep compartments and the access doors are located in the pipe tunnel on the second deck, the fumes generated from the welding operations in the side ballast tanks accumulate in the upper pipe tunnel, creating a dense, smoky environment. Furthermore, during the construction phase, the upper pipe tunnel only has forward and aft passages, making ventilation or exhaust systems insufficient to completely remove the fumes. This poses a risk to workers' occupational health and compromises production safety. Therefore, we have proposed a ventilation system for the upper pipe tunnel construction. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a ventilation device for shipboard pipe tunnel construction. This solves the problem mentioned in the background section: during actual on-site welding operations, because the ship's side ballast tanks are deep compartments and the access doors are located in the pipe tunnel passages on the second deck, the smoke generated from welding operations in the side ballast tanks accumulates in the upper pipe tunnel, causing smoke to swirl within it. Furthermore, during the construction phase, the upper pipe tunnel only has forward and aft passages, making ventilation or exhaust insufficient to completely remove the smoke, posing occupational health risks to workers and thus hindering production safety.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a ventilation device for shipboard pipework construction, comprising: a ventilation duct with a ventilation fan at one end, a first omnidirectional flexible suction arm and a second omnidirectional flexible suction arm with adjustable angles, and a suction arm connecting pipe for connecting the first and second omnidirectional flexible suction arms. A plurality of ventilation holes are evenly spaced inside one side of the ventilation duct. Suction arm mounting joints for installing the first omnidirectional flexible suction arm are provided inside each ventilation hole. A concave mounting bracket is provided inside the ventilation duct and on one side of each ventilation hole. Two sliding brackets are slidably mounted inside each concave mounting bracket. The first sealing cover plate is fixedly installed at one end of each of the two sliding rods. A first spring is installed on the outside of each sliding rod. The first sealing cover plate cooperates with the first spring. A suction arm connector is fixedly installed at one end of the first universal flexible suction arm. The suction arm connector cooperates with the suction arm mounting joint. The top and bottom of the suction arm connector are provided with snap-fit ​​mechanisms for connecting with the suction arm mounting joint. The top and bottom of the suction arm mounting joint are provided with slots. The snap-fit ​​mechanisms cooperate with the slots. A push rod is fixedly installed inside the suction arm connector. A push plate is fixedly installed at one end of the push rod. A communication port is provided inside the suction arm connector.

[0006] Furthermore, the other end of the first universal flexible suction arm is provided with a connection mechanism for connecting the first universal flexible suction arm, the second universal flexible suction arm and the suction arm connecting pipe on both ends and the outside of the suction arm connecting pipe. Several ventilation mechanisms are provided inside one side of both the first universal flexible suction arm and the second universal flexible suction arm.

[0007] Furthermore, the locking mechanism includes a mounting plate, which is fixedly installed on one side of the suction arm connector. Two sliding pins are slidably installed inside the mounting plate. A locking block is fixedly installed at one end of each sliding pin, and the locking block cooperates with a locking groove. A first limiting ring is fixedly installed on the outside of the sliding pin, and a second spring is installed on the outside of the sliding pin. The first limiting ring cooperates with the second spring. A pull plate is fixedly installed at the other end of the sliding pin.

[0008] Furthermore, the connecting mechanism includes a threaded head, a threaded sleeve, a limiting seal ring, and a positioning ring. The threaded head is located at one end of the first universal flexible suction arm and at both ends of the second universal flexible suction arm. The positioning ring is located on the outside of the threaded head. The limiting seal ring is located at both ends of the suction arm connecting pipe. The threaded sleeve is movably sleeved on the outside of the suction arm connecting pipe. The threaded sleeve and the limiting seal ring cooperate with the threaded head and the positioning ring.

[0009] Furthermore, the ventilation mechanism includes a vent, a damping hinge, and a second sealing cover. The vents are equally spaced inside the first and second universal flexible suction arms. The damping hinge is located at the connection between the vents and the second sealing cover, and the second sealing cover cooperates with the vent.

[0010] Furthermore, a positive magnet ring is provided inside one side of the vent, and a negative magnet ring is provided inside one side of the second sealing cover, the negative magnet ring cooperating with the positive magnet ring.

[0011] Furthermore, a tapered guide head is fixedly installed on one side of the first sealing cover to facilitate insertion into the suction arm mounting connector. Furthermore, a sealing threaded cap is installed on the outer thread of the threaded head at the other end of the second universal flexible suction arm.

[0012] Furthermore, a limiting plate is fixedly installed at the other end of the slide rod.

[0013] Furthermore, there are multiple second universal flexible suction arms and suction arm connecting pipes, and multiple second universal flexible suction arms can be interconnected through the suction arm connecting pipes.

[0014] This utility model provides a ventilation device for shipboard pipework construction, which has the following beneficial effects: 1. The ventilation equipment for the ductwork construction on this ship features ventilation holes on one side of segmented ventilation ducts. It includes a first universal flexible suction arm, a second universal flexible suction arm, a suction arm connecting pipe, a suction arm mounting joint, a concave mounting bracket, a sliding rod, a first sealing cover, a first spring, a suction arm connector, a snap-fit ​​mechanism, a push rod, a push plate, and a connecting port. During welding operations, the first universal flexible suction arm can be installed on the outside of the suction arm mounting joint via the snap-fit ​​mechanism on the outside of the suction arm connector. Then, the push rod and push plate on the inside of the suction arm connector push the conical guide head to release the first sealing cover from blocking the ventilation hole, allowing the first universal flexible suction arm to connect with the ventilation duct. Thus, during ventilation, the first and second universal flexible suction arms can ventilate different welding locations. Suction force draws out welding fumes and harmful gases, reducing the accumulation of harmful gases at the welding location, improving the construction environment, and increasing the efficiency of shipyard assembly.

[0015] 2. The ventilation equipment for pipework construction on this vessel, through the configuration of a first universal flexible suction arm, a second universal flexible suction arm, a suction arm connecting pipe, and a connecting mechanism, allows for the extension of its overall length after the first universal flexible suction arm is installed. This is achieved by connecting the first end of the suction arm connecting pipe to the threaded end via a limiting sealing ring, rotating the threaded sleeve to thread it onto the threaded end, and then installing the second universal flexible suction arm on the other end of the suction arm connecting pipe in the same manner. This meets the ventilation needs of different construction locations. Furthermore, the universal adjustability of both the first and second universal flexible suction arms allows for ventilation at different elevations and locations, offering greater compatibility and better ventilation, preventing harmful gases from being inhaled by construction workers and causing harm. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the ventilation duct structure of this utility model; Figure 3 This is a cross-sectional view of the ventilation duct of this utility model; Figure 4 This is a schematic diagram showing the connection between the suction arm connector and the suction arm connecting pipe of this utility model; Figure 5 This is a side view of the suction arm connector of this utility model; Figure 6 This utility model Figure 3 Enlarged view of point A in the image; Figure 7 This utility model Figure 5 Enlarged view of point B in the image; Figure 8 This is an exploded view of the connection between the first and second universal flexible suction arms of this utility model; Figure 9 This is a schematic diagram of the first universal flexible suction arm structure of this utility model; Figure 10 This is a cross-sectional view of the second universal flexible suction arm of this utility model; Figure 11 This is a schematic diagram of the second universal flexible suction arm structure of this utility model; Figure 12 This is a schematic diagram of the suction arm connecting pipe structure of this utility model; Figure 13 This utility model Figure 11 Enlarged view of point C in the image.

[0017] In the diagram: 1. Ventilation duct; 2. First universal flexible suction arm; 3. Second universal flexible suction arm; 4. Suction arm connecting pipe; 5. Ventilation hole; 6. Suction arm mounting joint; 7. Side concave mounting bracket; 8. Slide rod; 9. First sealing cover plate; 10. Conical guide head; 11. First spring; 12. Suction arm connector; 13. Push rod; 14. Push plate; 15. Connecting port; 16. Mounting plate; 17. Sliding pin; 18. Locking block; 19. Locking groove; 20. First limiting ring; 21. Second spring; 22. Pull plate; 23. Threaded head; 24. Threaded sleeve; 25. Limiting sealing ring; 26. Positioning ring; 27. Sealing threaded cover; 28. Ventilation port; 29. ​​Damping hinge; 30. Second sealing cover plate; 31. Positive magnet ring; 32. Negative magnet ring; 33. Limiting plate. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Example 1 Please see Figures 1 to 7This utility model provides a technical solution: a ventilation device for shipboard pipework construction, comprising: a ventilation duct 1 with a ventilation fan at one end, a first universal flexible suction arm 2 and a second universal flexible suction arm 3 with adjustable angles, and a suction arm connecting pipe 4 for connecting the first universal flexible suction arm 2 and the second universal flexible suction arm 3. A plurality of ventilation holes 5 are evenly spaced inside one side of the ventilation duct 1, and suction arm mounting joints 6 for installing the first universal flexible suction arm 2 are provided inside the ventilation holes 5. Inside the ventilation hole 5, a concave mounting bracket 7 is provided on one side. Two sliding rods 8 are slidably installed inside the concave mounting bracket 7. A first sealing cover plate 9 is fixedly installed at one end of the two sliding rods 8. A first spring 11 is installed on the outside of the sliding rods 8. The first sealing cover plate 9 cooperates with the first spring 11. A suction arm connector 12 is fixedly installed at one end of the first universal flexible suction arm 2. The suction arm connector 12 cooperates with the suction arm mounting joint 6. The top and bottom of the suction arm connector 12 are provided for connecting with the suction arm mounting joint 6. The suction arm mounting joint 6 has a snap-fit ​​mechanism. Slots 19 are provided inside the top and bottom of the joint. The snap-fit ​​mechanism engages with the slots 19. A push rod 13 is fixedly installed inside the suction arm connector 12. A push plate 14 is fixedly installed at one end of the push rod 13. A communication port 15 is provided inside the suction arm connector 12. After the suction arm connector 12 is installed outside the suction arm mounting joint 6, the push rod 13 contacts the conical guide head 10 through the push plate 14 and pushes the conical guide head 10, causing the first sealing cover plate 9 and the sliding rod 8 to shift. Simultaneously, the first sealing cover plate 9... When a spring 11 is squeezed, the first sealing cover 9 is pushed open from one end of the suction arm mounting joint 6, allowing the first universal flexible suction arm 2 to pass through the interior of the ventilation duct 1. When the ventilation fan at one end of the ventilation duct 1 is turned on, the suction generated in the ventilation duct 1 can also generate suction in the first universal flexible suction arm 2 and the second universal flexible suction arm 3 through the suction arm mounting joint 6. This allows ventilation of the construction site to be achieved, exhausting the exhaust gas generated during electric welding construction, and preventing the exhaust gas from being inhaled by construction personnel and causing harm to their bodies. Once construction in one area of ​​the ship is completed, the suction arm connector 12 can be removed from the outside of the suction arm mounting joint 6. After the suction arm connector 12 is removed from the suction arm mounting joint 6, the push rod 13 and the push plate 14 will no longer press against the first sealing cover 9, and the first spring 11 will rebound, thereby pushing the slide rod 8, the first sealing cover 9 and the conical guide head 10 to reset. After the conical guide head 10 is inserted into the suction arm mounting joint 6, it will block the ventilation hole 5 and the suction arm mounting joint 6 through the first sealing cover 9, thereby closing the ventilation hole 5 and ensuring that the ventilation and air intake power of other ventilation parts is not affected. The snap-fit ​​mechanism facilitates the installation and removal of the suction arm connector 12 on the outside of the suction arm mounting connector 6, making disassembly quick and easy.

[0020] In this embodiment, the locking mechanism further includes a mounting plate 16, which is fixedly mounted to one side of the suction arm connector 12. Two sliding pins 17 are slidably mounted inside the mounting plate 16. A locking block 18 is fixedly mounted at one end of each sliding pin 17, engaging with a slot 19. A first limiting ring 20 is fixedly mounted on the outer side of each sliding pin 17, and a second spring 21 is mounted on the outer side of each sliding pin 17, engaging with the second spring 21. A pull plate 22 is fixedly mounted at the other end of each sliding pin 17. When it is necessary to remove the suction arm connector 12 from the outside of the suction arm mounting joint 6, pulling the pull plate 22 causes the sliding pins 17 and locking block 18 to shift, thereby allowing the locking block 18 to be pulled out of the slot 19, releasing the slot 19's restriction on the locking block 18, and thus allowing the suction arm connector 12 to be removed. After removing the suction arm mounting connector 6, similarly, when the suction arm connector 12 is installed on the outside of the suction arm mounting connector 6 via the snap-fit ​​mechanism, pulling the pull plate 22 causes the sliding pin 17 and the locking block 18 to move. When the sliding pin 17 moves, the first limiting ring 20 squeezes the second spring 21. After the suction arm connector 12 is inserted on the outside of the suction arm mounting connector 6, the first sealing cover plate 9 is pushed by the push rod 13 and the push plate 14 to open the suction arm mounting connector 6. After releasing the pull plate 22, the second spring 21 rebounds and pushes the first limiting ring 20 to reset the sliding pin 17 and the locking block 18, so that the locking block 18 can be inserted into the slot 19. The suction arm connector 12 is fixed on the outside of the suction arm mounting connector 6 by the cooperation of the locking block 18 and the slot 19, thus completing the installation of the suction arm connector 12. The installation is convenient and quick.

[0021] In this embodiment, a tapered guide 10 is further fixedly installed on one side of the first sealing cover plate 9 to facilitate insertion into the suction arm mounting joint 6. The tapered guide 10 is tapered, which facilitates its insertion into the suction arm mounting joint 6 to seal the suction arm mounting joint 6 by means of its tapered characteristics, thereby ensuring that the first sealing cover plate 9 can cover the suction arm mounting joint 6. The elasticity of the first spring 11 applies force to the first sealing cover plate 9, so that it is tightly attached to the outer side of one end of the suction arm mounting joint 6 to ensure its sealing performance.

[0022] In this embodiment, a limiting plate 33 is further fixedly installed at the other end of the slide rod 8; the limiting plate 33 can limit the slide rod 8.

[0023] Example 2 Please see Figure 1 , Figures 8 to 13This utility model provides a technical solution where the other end of the first universal flexible suction arm 2 is connected to both ends of the second universal flexible suction arm 3 and the outside of the suction arm connecting pipe 4 by a connecting mechanism for connecting the first universal flexible suction arm 2, the second universal flexible suction arm 3 and the suction arm connecting pipe 4. Several ventilation mechanisms are provided inside one side of both the first universal flexible suction arm 2 and the second universal flexible suction arm 3. The second universal flexible suction arm 3 can be connected to the first universal flexible suction arm 2 through the suction arm connecting pipe 4, and several second universal flexible suction arms 3 can also be connected to each other through the suction arm connecting pipe 4, thereby extending to different lengths to meet different construction distances. Through the setting of the ventilation mechanisms, only the ventilation mechanism of the area being ventilated can be turned on according to different construction positions, while the ventilation mechanism of the unconstructed area can be turned off, thus avoiding the situation where the ventilation mechanism of the unconstructed area is turned on, generating suction that affects the ventilation efficiency and power of the construction area.

[0024] In this embodiment, the connecting mechanism further includes a threaded head 23, a threaded sleeve 24, a limiting seal ring 25, and a positioning ring 26. The threaded head 23 is disposed at the other end of the first universal flexible suction arm 2 and both ends of the second universal flexible suction arm 3. The positioning ring 26 is disposed on the outside of the threaded head 23. The limiting seal ring 25 is disposed at both ends of the suction arm connecting pipe 4. The threaded sleeve 24 is movably sleeved on the outside of the suction arm connecting pipe 4. The threaded sleeve 24 and the limiting seal ring 25 cooperate with the threaded head 23 and the positioning ring 26. After the limiting seal ring 25 at one end of the suction arm connecting pipe 4 is mated with one end of the threaded head 23, the threaded sleeve 24 is rotated to make it screw into the threaded head 23. The connection is made by threading the suction arm connecting pipe 4 to one end of the first universal flexible suction arm 2. Then, when the second universal flexible suction arm 3 needs to be installed at one end of the suction arm connecting pipe 4, the threaded head 23 at one end of the second universal flexible suction arm 3 is aligned with the limiting sealing ring 25 at one end of the suction arm connecting pipe 4. After positioning, the threaded sleeve 24 is threaded to the threaded head 23 at one end of the second universal flexible suction arm 3. This completes the connection of the first universal flexible suction arm 2, the second universal flexible suction arm 3 and the suction arm connecting pipe 4. When several second universal flexible suction arms 3 need to be connected, they can be connected in the same way by increasing the number of suction arm connecting pipes 4.

[0025] In this embodiment, the ventilation mechanism further includes a vent 28, a damping hinge 29, and a second sealing cover 30. The vents 28 are evenly spaced inside one side of the first universal flexible suction arm 2 and the second universal flexible suction arm 3. The damping hinge 29 is located at the connection between the vents 28 and the second sealing cover 30, and the second sealing cover 30 cooperates with the vents 28. When the ventilation mechanism needs to be opened, the vents 28 can be opened simply by flipping up the second sealing cover 30 to make it rotate around the damping hinge 29. Then, the outside world can be connected to the inside of the first universal flexible suction arm 2 or the second universal flexible suction arm 3 through the vents 28. The suction generated by the vents 28 can draw the harmful gases generated by electric welding into the second universal flexible suction arm 3 and then discharge them through the ventilation pipe 1 to achieve ventilation.

[0026] In this embodiment, there are several second universal flexible suction arms 3 and suction arm connecting pipes 4, and these several second universal flexible suction arms 3 can be interconnected through the suction arm connecting pipes 4. Depending on the distance between the construction location and the ventilation duct 1, the number of second universal flexible suction arms 3 and suction arm connecting pipes 4 can be increased so that the ventilation mechanism on the outer side of the first universal flexible suction arm 2 and the second universal flexible suction arm 3 can be located in the construction location area to provide ventilation, thereby meeting the ventilation needs of different construction locations.

[0027] In this embodiment, a positive magnet ring 31 is further provided inside one side of the vent 28, and a negative magnet ring 32 is provided inside one side of the second sealing cover 30. The negative magnet ring 32 cooperates with the positive magnet ring 31. With the setting of the positive magnet ring 31 and the negative magnet ring 32, when the second sealing cover 30 is placed on one side of the vent 28, the positive magnet ring 31 and the negative magnet ring 32 will fix the second sealing cover 30 to the outside of the vent 28 by magnetic adsorption, ensuring the sealing performance of the second sealing cover 30 on the outside of the vent 28.

[0028] In this embodiment, a sealing threaded cap 27 is further installed on the outer thread of the threaded head 23 at the other end of the second universal flexible suction arm 3. The sealing threaded cap 27 can be installed on one end of the last second universal flexible suction arm 3 to seal it after the number of second universal flexible suction arms 3 is increased, thereby ensuring the suction force at the ventilation mechanism.

[0029] In summary, the ventilation equipment for pipework construction on this ship is used by installing the first universal flexible suction arm 2 on the outside of the corresponding suction arm mounting joint 6 on the outside of the ventilation pipe 1, according to the construction location. During installation, pulling the pull plate 22 causes the sliding pin 17 and the locking block 18 to move. When the sliding pin 17 moves, the first limiting ring 20 squeezes the second spring 21. After the suction arm connector 12 is inserted into the outside of the suction arm mounting joint 6, the first sealing cover 9 is pushed by the push rod 13 and the push plate 14 to open the suction arm mounting joint 6. After releasing the pull plate 22, the second spring 21 rebounds and pushes the first limiting ring 20 to open the first sealing cover 18. When ring 20 drives sliding pin 17 and locking block 18 to reset, locking block 18 can be inserted into locking slot 19. The locking block 18 and locking slot 19 cooperate to fix the suction arm connector 12 to the outside of the suction arm mounting joint 6, thus completing the installation of the suction arm connector 12. Installation is convenient and quick. Then, after mating the limiting sealing ring 25 at one end of the suction arm connecting pipe 4 with one end of the threaded head 23, the threaded sleeve 24 is rotated to make it threadedly connected to the threaded head 23, thus installing the suction arm connecting pipe 4 at one end of the first universal flexible suction arm 2. Subsequently, when the second universal flexible suction arm 3 needs to be installed... When connecting one end of the suction arm connecting pipe 4, similarly, after aligning and positioning the threaded head 23 of one end of the second universal flexible suction arm 3 with the limiting sealing ring 25 of one end of the suction arm connecting pipe 4, thread the threaded sleeve 24 to the threaded head 23 of one end of the second universal flexible suction arm 3 to complete the connection of the first universal flexible suction arm 2, the second universal flexible suction arm 3, and the suction arm connecting pipe 4. When several second universal flexible suction arms 3 need to be connected, the same method can be used by increasing the number of suction arm connecting pipes 4. Once the number of second universal flexible suction arms 3 installed is sufficient, The sealing threaded cover 27 is installed on the outside of the threaded head 23 of the last second universal flexible suction arm 3 via threads. When ventilation is required during electric welding, the second sealing cover 30 in the construction area is flipped up to rotate around the damping hinge 29, which opens the ventilation port 28. Then, the outside can be connected to the first universal flexible suction arm 2 or the second universal flexible suction arm 3 through the ventilation port 28. The suction generated by the ventilation port 28 can draw the harmful gases generated during electric welding into the second universal flexible suction arm 3 and then discharge them through the ventilation pipe 1 to achieve ventilation.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A ventilation device for shipboard pipework construction, characterized in that, include: A ventilation duct (1) with a ventilation fan at one end, a first universal flexible suction arm (2) and a second universal flexible suction arm (3) with adjustable angles, and a suction arm connecting pipe (4) for connecting the first universal flexible suction arm (2) and the second universal flexible suction arm (3) are provided. Several ventilation holes (5) are evenly spaced inside one side of the ventilation duct (1). Suction arm mounting joints (6) for installing the first universal flexible suction arm (2) are provided inside the ventilation holes (5). A side concave mounting bracket (7) is provided inside the ventilation duct (1) and on one side of the ventilation holes (5). Two slide rods (8) are slidably installed inside the side concave mounting bracket (7). A first sealing cover plate (9) is fixedly installed at one end of the two slide rods (8). A first spring (11) is installed on the outside of the first sealing cover (9), which cooperates with the first spring (11). A suction arm connector (12) is fixedly installed at one end of the first universal flexible suction arm (2). The suction arm connector (12) cooperates with the suction arm mounting joint (6). The top and bottom of the suction arm connector (12) are provided with a snap-fit ​​mechanism for connecting with the suction arm mounting joint (6). The top and bottom of the suction arm mounting joint (6) are provided with a slot (19). The snap-fit ​​mechanism cooperates with the slot (19). A push rod (13) is fixedly installed inside the suction arm connector (12). A push plate (14) is fixedly installed at one end of the push rod (13). A communication port (15) is opened inside the suction arm connector (12).

2. The ventilation equipment for shipboard pipework construction according to claim 1, characterized in that: The other end of the first universal flexible suction arm (2) is provided with a connection mechanism for connecting the first universal flexible suction arm (2), the two ends of the second universal flexible suction arm (3) and the outside of the suction arm connecting pipe (4). Several ventilation mechanisms are provided inside one side of the first universal flexible suction arm (2) and the second universal flexible suction arm (3).

3. The ventilation equipment for shipboard pipework construction according to claim 1, characterized in that: The locking mechanism includes a mounting plate (16), which is fixedly installed on one side of the suction arm connector (12). Two sliding pins (17) are slidably installed inside the mounting plate (16). A locking block (18) is fixedly installed at one end of the sliding pin (17), and the locking block (18) cooperates with the locking groove (19). A first limiting ring (20) is fixedly installed on the outside of the sliding pin (17), and a second spring (21) is installed on the outside of the sliding pin (17). The first limiting ring (20) cooperates with the second spring (21). A pull plate (22) is fixedly installed at the other end of the sliding pin (17).

4. A ventilation device for shipboard pipework construction according to claim 2, characterized in that: The connecting mechanism includes a threaded head (23), a threaded sleeve (24), a limiting seal ring (25), and a positioning ring (26). The threaded head (23) is located at the other end of the first universal flexible suction arm (2) and at both ends of the second universal flexible suction arm (3). The positioning ring (26) is located on the outside of the threaded head (23). The limiting seal ring (25) is located at both ends of the suction arm connecting pipe (4). The threaded sleeve (24) is movably sleeved on the outside of the suction arm connecting pipe (4). The threaded sleeve (24) and the limiting seal ring (25) cooperate with the threaded head (23) and the positioning ring (26).

5. A ventilation device for shipboard pipework construction according to claim 2, characterized in that: The ventilation mechanism includes a vent (28), a damping hinge (29), and a second sealing cover (30). The vents (28) are evenly spaced inside the first universal flexible suction arm (2) and the second universal flexible suction arm (3). The damping hinge (29) is located at the connection between the vents (28) and the second sealing cover (30). The second sealing cover (30) cooperates with the vents (28).

6. A ventilation device for shipboard pipework construction according to claim 5, characterized in that: A positive magnet ring (31) is provided inside one side of the vent (28), and a negative magnet ring (32) is provided inside one side of the second sealing cover (30). The negative magnet ring (32) cooperates with the positive magnet ring (31).

7. A ventilation device for shipboard pipework construction according to claim 1, characterized in that: A tapered guide (10) is fixedly installed on one side of the first sealing cover (9) to facilitate insertion into the suction arm mounting connector (6).

8. A ventilation device for shipboard pipework construction according to claim 1, characterized in that: A sealing thread cap (27) is installed on the outer thread of the threaded head (23) at the other end of the second universal flexible suction arm (3).

9. A ventilation device for shipboard pipework construction according to claim 1, characterized in that: A limiting plate (33) is fixedly installed at the other end of the slide bar (8).

10. A ventilation device for shipboard tunnel construction according to claim 1, characterized in that: There are several second universal flexible suction arms (3) and suction arm connecting pipes (4), and several second universal flexible suction arms (3) can be connected to each other through suction arm connecting pipes (4).

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