Marine vent pipe breathing non-return device

Abstract

The embodiment of the invention provides a breathing non-return device for a marine vent pipe. The breathing non-return device comprises a body with a containing cavity, a first opening formed in the top end and used for being connected with the exterior of a ship body through a pipeline, and a second opening formed in the bottom end and used for being connected with a seawater valve box through a pipeline; the breathable supporting plate has breathability and is arranged in the containing cavity, and the containing cavity is divided into an upper containing cavity and a lower containing cavity by the breathable supporting plate; the hollow floating ball is arranged in the upper containing cavity, and the diameter of the hollow floating ball is larger than that of the first opening; under the reverse water working condition, seawater enters the containing cavity through the second opening and impacts the hollow floating ball to float through the breathable supporting plate, the hollow floating ball moves upwards to the first opening, the first opening is blocked, and the seawater is prevented from flowing upwards; under the non-water-return working condition, the breathable supporting plate supports the hollow floating ball, and air can flow between the first opening and the second opening through the breathable supporting plate and the hollow floating ball. The breathing non-return device for the marine vent pipe has the characteristics of integrating breathing and non-return functions of the vent pipe, has the advantages of small size, easiness in arrangement, concentrated functions and the like, and can effectively solve the problem of water return of the vent pipe caused by ventilation of a seawater valve box when a ship backs up.

Description

Technical Field

[0001] This application relates to the technical field of marine engine piping systems, and in particular to a marine ventilator breathing check device. Background Technology

[0002] When the vent pipe of the subsea valve box is not high enough, water backflow can easily occur when the vessel reverses. If a shut-off valve is added directly to the vent pipe, manual operation is required to open / close the valve, which is time-consuming and labor-intensive. Moreover, directly closing the valve will prevent the subsea valve box from taking in / exhausting air. If a check valve is added directly to the vent pipe, although it can solve the problems of water backflow and air intake in the seawater valve box, it cannot solve the problem of normal exhaust. Summary of the Invention

[0003] To solve the problem of allowing the seawater valve box to breathe normally (inhale and exhale) while preventing backflow through the vent pipe, the invention proposes a device that is both aesthetically pleasing and compact, yet fully functional—a vent pipe breathing check device.

[0004] A marine ventilator breathing check device, the breathing check device comprising:

[0005] The main body has a receiving cavity, a first opening at the top for connecting to the outside of the hull via a pipe, and a second opening at the bottom for connecting to a seawater valve box via a pipe.

[0006] A breathable support plate, which is breathable, is disposed in the receiving cavity, dividing the receiving cavity into an upper receiving cavity and a lower receiving cavity. The space between the breathable support plate and the first opening is the upper receiving cavity, and the space between the breathable support plate and the second opening is the lower receiving cavity.

[0007] A hollow float is disposed in the upper receiving cavity, and the diameter of the hollow float is larger than the first opening;

[0008] In the reverse flow condition, seawater enters the receiving cavity through the second opening, impacts the hollow buoy through the ventilated support plate and floats up. The hollow buoy moves upward to the first opening, blocking the first opening and preventing seawater from flowing upward.

[0009] In non-reverse operation, the ventilated support plate supports the hollow float, and air can flow between the first opening and the second opening through the ventilated support plate and the hollow float.

[0010] In some embodiments, the breathing check device further includes:

[0011] A sealing ring is disposed on the side edge of the first opening corresponding to the receiving cavity;

[0012] In the reverse flow operation, when the hollow float moves upward to the first opening, it abuts against the sealing ring to improve the sealing performance of the first opening.

[0013] In some embodiments, the breathing check device further includes:

[0014] The top connecting pipe is connected to the bottom end of the top connecting pipe through the first opening, and the top end of the top connecting pipe is used to connect to the outside of the hull through a pipe.

[0015] In some embodiments, a first connecting flange is provided on the outer wall of the top end of the top connecting pipe, and the pipe is connected to the top connecting pipe through the first connecting flange.

[0016] In some embodiments, the body includes a main tube and an annular sealing plate;

[0017] The main pipe is a cylindrical pipe, and the diameter of the main pipe is larger than the diameter of the top connecting pipe. The breathable support plate is disposed on the inner wall of the main pipe.

[0018] The annular sealing plate is disposed at the bottom end of the main pipe, and the second opening is provided in the middle of the annular sealing plate;

[0019] A second connecting flange is provided on the outer wall of the top part of the main pipe;

[0020] A third connecting flange is provided on the outer wall of the bottom end of the top connecting pipe, and the top connecting pipe is connected to the main pipe through the second connecting flange and the third connecting flange;

[0021] The main pipe, the annular sealing plate, the third connecting flange, and the bottom end face of the top connecting pipe form the receiving cavity.

[0022] In some embodiments, the sealing ring is sandwiched between the second connecting flange and the third connecting flange.

[0023] In some embodiments, the breathing check device further includes:

[0024] The bottom connecting pipe connects the bottom end of the main body to the top end of the bottom connecting pipe via the second opening, and the bottom end of the bottom connecting pipe is used to connect to the seawater valve box via a pipe.

[0025] In some embodiments, a fourth connecting flange is provided on the outer wall of the bottom end of the bottom connecting pipe, and the pipe is connected to the bottom connecting pipe through the fourth connecting flange.

[0026] In some embodiments, the breathable support plate has a support hole in the middle, the diameter of which is smaller than that of the hollow float, for supporting the hollow float, and breathable through holes are provided around the support hole.

[0027] In some embodiments, the surface of the hollow float is made of rubber.

[0028] The marine vent pipe breathing check device of the above embodiments of the present invention has the characteristics of integrating vent pipe breathing and check function, and has the advantages of small size, easy layout and concentrated function. It can effectively solve the problem of vent pipe backflow when the seawater valve box is vented during ship reversing. Attached Figure Description

[0029] The accompanying drawings illustrate, by way of example and not limitation, the various embodiments discussed herein.

[0030] Figure 1 A schematic cross-sectional view of a marine ventilator breathing check device.

[0031] Figure 2 This is a schematic diagram of the breathable support plate structure;

[0032] Figure 3 This is an installation diagram for a marine ventilator breathing check device. Detailed Implementation

[0033] In order to gain a more detailed understanding of the features and technical content of the embodiments of this application, the implementation of the embodiments of this application will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for reference and illustration only and are not intended to limit the embodiments of this application.

[0034] In the embodiments described in this application, it should be noted that, unless otherwise stated and limited, the term "connection" should be interpreted broadly. For example, it can be an electrical connection, or a connection between two internal components. It can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above term according to the specific circumstances.

[0035] It should be noted that the terms "first," "second," and "third" used in the embodiments of this application are merely used to distinguish similar objects and do not represent a specific ordering of objects. It is understood that "first," "second," and "third" can be interchanged in a specific order or sequence where permitted. It should be understood that the objects distinguished by "first," "second," and "third" can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in an order other than those illustrated or described herein.

[0036] This invention provides a marine ventilator breathing check device, such as... Figure 1 As shown, the breathing check device includes:

[0037] The main body 1 has a receiving cavity 10, a first opening 11 at the top for connecting to the outside of the hull through a pipe, and a second opening 12 at the bottom for connecting to a seawater valve box through a pipe.

[0038] The breathable support plate 2 is breathable and is disposed in the receiving cavity 10, dividing the receiving cavity 10 into an upper receiving cavity 13 and a lower receiving cavity 14. The upper receiving cavity 13 is between the breathable support plate 2 and the first opening 11, and the lower receiving cavity 14 is between the breathable support plate 2 and the second opening 12.

[0039] In some embodiments, such as Figure 2 As shown, the breathable support plate 2 has a support hole 15 in the middle. The diameter of the support hole 14 is smaller than that of the hollow float 3, which is used to support the hollow float 3. Breathable through holes 16 are provided around the support hole 2.

[0040] A hollow float 3 is disposed in the upper receiving cavity 13, and the diameter of the hollow float 3 is larger than that of the first opening 11. In some embodiments, the surface of the hollow float 3 is made of rubber. The rubber material has good sealing performance, which can improve the sealing performance of the first opening 11.

[0041] Installation of the breathing check device as follows Figure 3 As shown. The breathing check device is installed in the venting line of the seawater valve box, such as... Figure 3 As shown, the main body 1 is placed vertically, and the breathable support plate 2 is parallel to the deck surface.

[0042] In non-reverse operation, the ventilated support plate 2 supports the hollow float 3, and air can flow between the ventilated support plate 2 and the hollow float 3 between the first opening 11 and the second opening 12.

[0043] In the reverse flow condition, seawater flows upward along the pipe from the seabed gate, enters the receiving cavity 10 through the second opening 12, and floats up after impacting the hollow buoy 3 via the ventilated support plate 2. The hollow buoy 3 then moves upward to the first opening 11, as... Figure 1 As shown in the dotted circle, the first opening 11 is blocked to prevent seawater from flowing upwards. When the water flow collides with the hollow buoy 3, it instantly falls back to the seabed gate. Under its own weight, the hollow buoy 3 also automatically falls to the ventilated support plate 2, restoring normal ventilation.

[0044] In some embodiments, such as Figure 1 As shown, the breathing check device also includes:

[0045] The sealing ring 4 is disposed on the side edge of the receiving cavity 10 corresponding to the first opening 11.

[0046] In the backflow condition, when the hollow float 3 moves upward to the first opening 11, it abuts against the sealing ring 4 to improve the sealing performance of the first opening 11.

[0047] In some embodiments, such as Figure 1 As shown, the breathing check device also includes:

[0048] The top connecting pipe 5 is connected to the bottom end of the main body 1 through the first opening 11. The top end of the top connecting pipe 5 is used to connect to the outside of the hull through a pipe. Here, the top connecting pipe 5 can be made of seamless steel pipe, for example.

[0049] In some embodiments, such as Figure 1 As shown, a first connecting flange 21 is provided on the outer wall of the top end of the top connecting pipe 5, and the pipe is connected to the top connecting pipe 5 through the first connecting flange 21.

[0050] In some embodiments, such as Figure 1 As shown, the main body 1 includes a main tube 6 and an annular sealing plate 7.

[0051] The main pipe 6 is a cylindrical tube with a diameter larger than that of the top connecting pipe 5. A breathable support plate 2 is installed on the inner wall of the main pipe 6. Here, the main pipe 6 can be made of seamless steel pipe, for example.

[0052] An annular sealing plate 7 is disposed at the bottom end of the main pipe 6, and a second opening 12 is provided in the middle of the annular sealing plate 6. The outer diameter of the annular sealing plate 7 matches the bottom end of the main pipe 6 and is welded to the bottom end of the main pipe 6.

[0053] A second connecting flange 22 is provided on the outer wall of the top part of the main pipe 6. The inner diameter of the second connecting flange 22 matches the outer diameter of the main pipe 6, and it can be connected to the main pipe 6 by welding.

[0054] A third connecting flange 23 is provided on the outer wall of the bottom end of the top connecting pipe 5. The top connecting pipe 5 and the main pipe 6 are connected through the second connecting flange 22 and the third connecting flange 23. The inner diameter of the third connecting flange 23 matches the outer diameter of the top connecting pipe 5, and they can be connected by welding. The outer diameter of the third connecting flange 23 matches the outer diameter of the second connecting flange 22, and corresponding flange connection holes are provided for connection.

[0055] The main pipe 6, the annular sealing plate 7, the third connecting flange 23, and the bottom end face of the top connecting pipe 5 form a receiving cavity.

[0056] Here, the second connecting flange 22 and the third connecting flange 23 are connected by bolts and nuts, and can be disassembled when needed for subsequent use and maintenance.

[0057] In some embodiments, such as Figure 1 As shown, the sealing ring 4 is sandwiched between the second connecting flange 22 and the third connecting flange 23. Here, the sealing ring 4 can be, for example, an aramid rubber gasket.

[0058] In some embodiments, such as Figure 1 As shown, the breathing check device also includes:

[0059] The bottom connecting pipe 8 is connected to the top of the body 1 via the second opening 12. The bottom end of the bottom connecting pipe 8 is used to connect to the seawater valve box via a pipe. Here, the bottom connecting pipe 8 can be made of seamless steel pipe, for example.

[0060] In some embodiments, such as Figure 1 As shown, a fourth connecting flange 24 is provided on the outer wall of the bottom end of the bottom connecting pipe 8, and the pipe is connected to the bottom connecting pipe 8 through the fourth connecting flange 24. The inner diameter of the fourth connecting flange 24 matches the outer diameter of the bottom connecting pipe 8, and the connection can be made by welding.

[0061] To increase corrosion resistance, the breathing check device described in the above embodiment can be deburred after manufacturing and then subjected to overall galvanizing or inner surface plastic coating.

[0062] The marine vent pipe breathing check device of the above embodiments of the present invention has the characteristics of integrating vent pipe breathing and check function, and has the advantages of small size, easy layout and concentrated function. It can effectively solve the problem of vent pipe backflow when the seawater valve box is vented during ship reversing.

[0063] The technical solutions described in the embodiments of this application can be combined arbitrarily without conflict.

[0064] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A marine ventilator breathing check device, characterized in that, The breathing check device includes: The main body has a receiving cavity, a first opening at the top for connecting to the outside of the hull via a pipe, and a second opening at the bottom for connecting to a seawater valve box via a pipe. A breathable support plate, which is breathable, is disposed in the receiving cavity, dividing the receiving cavity into an upper receiving cavity and a lower receiving cavity. The space between the breathable support plate and the first opening is the upper receiving cavity, and the space between the breathable support plate and the second opening is the lower receiving cavity. A hollow float is disposed in the upper receiving cavity, and the diameter of the hollow float is larger than the first opening; In the reverse flow condition, seawater enters the receiving cavity through the second opening, impacts the hollow buoy through the ventilated support plate and floats up. The hollow buoy moves upward to the first opening, blocking the first opening and preventing seawater from flowing upward. In non-reverse operation, the ventilated support plate supports the hollow float, and air can flow between the first opening and the second opening through the ventilated support plate and the hollow float.

2. The marine ventilator breathing check device according to claim 1, characterized in that, The breathing check device further includes: A sealing ring is disposed on the side edge of the first opening corresponding to the receiving cavity; In the reverse flow operation, when the hollow float moves upward to the first opening, it abuts against the sealing ring to improve the sealing performance of the first opening.

3. The marine ventilator breathing check device according to claim 2, characterized in that, The breathing check device further includes: The top connecting pipe is connected to the bottom end of the top connecting pipe through the first opening, and the top end of the top connecting pipe is used to connect to the outside of the hull through a pipe.

4. The marine ventilator breathing check device according to claim 3, characterized in that, The top connecting pipe has a first connecting flange on its outer wall at the top end, and the pipe is connected to the top connecting pipe through the first connecting flange.

5. The marine ventilator breathing check device according to claim 3, characterized in that, The main body includes a main tube and a ring-shaped sealing plate; The main pipe is a cylindrical pipe, and the diameter of the main pipe is larger than the diameter of the top connecting pipe. The breathable support plate is disposed on the inner wall of the main pipe. The annular sealing plate is disposed at the bottom end of the main pipe, and the second opening is provided in the middle of the annular sealing plate; A second connecting flange is provided on the outer wall of the top part of the main pipe; A third connecting flange is provided on the outer wall of the bottom end of the top connecting pipe, and the top connecting pipe is connected to the main pipe through the second connecting flange and the third connecting flange; The main pipe, the annular sealing plate, the third connecting flange, and the bottom end face of the top connecting pipe form the receiving cavity.

6. The marine ventilator breathing check device according to claim 5, characterized in that, The sealing ring is sandwiched between the second connecting flange and the third connecting flange.

7. The marine ventilator breathing check device according to claim 1, characterized in that, The breathing check device further includes: The bottom connecting pipe connects the bottom end of the main body to the top end of the bottom connecting pipe via the second opening, and the bottom end of the bottom connecting pipe is used to connect to the seawater valve box via a pipe.

8. The marine ventilator breathing check device according to claim 7, characterized in that, A fourth connecting flange is provided on the outer wall of the bottom end of the bottom connecting pipe, and the pipe is connected to the bottom connecting pipe through the fourth connecting flange.

9. The marine ventilator breathing check device according to claim 1, characterized in that, The breathable support plate has a support hole in the middle, the diameter of which is smaller than that of the hollow float, and is used to support the hollow float. Breathable through holes are provided around the support hole.

10. The marine ventilator breathing check device according to claim 1, characterized in that, The surface of the hollow float is made of rubber.

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