An emergency breathing system for a large depth manned submersible

Abstract

The application discloses a kind of big depth manned submersible emergency breathing system, it is related to diving equipment field, including high-pressure oxygen cylinder, the high-pressure oxygen cylinder is connected with first high-pressure valve body assembly by air pipe, the second sound filter includes sound filter main body, air inlet connecting pipe, the outside of the air inlet connecting pipe is provided with the mounting mechanism for the first sound filter and air pipe connection;The threaded sleeve is distributed with the positioning mechanism for limiting the threaded sleeve.The application is positioned by setting positioning mechanism, by the threaded sleeve is screwed to air pipe and air inlet connecting pipe, air outlet connecting pipe between, at this time, the threaded sleeve can be limited by inserting second positioning pin into annular clamping groove, to increase the stability of air pipe and air inlet connecting pipe, air outlet connecting pipe between connection, then can be made L-shaped connecting rod, threaded sleeve lose positioning simultaneously by connecting mechanism, to provide the convenience for subsequent disassembly, replacement of equipment.

Description

Technical Field

[0001] The invention relates to the field of diving equipment, in particular to an emergency breathing system for a deep-sea manned submersible. Background Art

[0002] Deep-sea manned submersibles are one of humanity's primary tools for deep-sea exploration. Their manned cabins enable exploration and observation under normal pressure. The cabin provides a stable atmosphere, allowing personnel to breathe freely without the need for any equipment. However, if the cabin becomes contaminated, the contaminants will quickly spread throughout the small cabin. Furthermore, the submersible's great depth prevents it from surfacing quickly, making it difficult for personnel to breathe the cabin air. Consequently, they require emergency breathing systems to maintain vital signs.

[0003] Chinese patent document CN107301802A discloses a manned submersible simulation system, comprising a manned submersible simulation body, a data simulation platform, and a visual simulation system, wherein the various systems are interconnected via a high-speed Ethernet switch. The manned submersible simulation body is used to simulate the actual structure of the Jiaolong manned submersible, including overall exterior dimensions, cabin environment, and operating system consistent with the actual submersible. The data simulation platform is used to generate sensor detection data acquired by various sensors of the Jiaolong manned submersible, providing a simulated digital environment for the cabin control system of the simulation body. The visual simulation system is based on real seabed images taken by the Jiaolong manned submersible during its dive, and constructs three types of seabed simulated visual environments through computer modeling: seabed hydrothermal vent activity areas, seabed mountain areas, and sea basin polymetallic nodule distribution areas. The movement and transformation of the seabed visual environment can be achieved through motion instructions of the cabin control system. The document does not provide the poor sealing performance of the connection between the silencer filter and the air pipe, which leads to problems in the use of the device. Based on this, the present invention further improves and optimizes it.

[0004] The entire emergency breathing system is an independent atmospheric environment and does not allow gas exchange with the cabin environment. Human breathing requires a mixed gas, while continuously consuming oxygen and exhaling carbon dioxide. The emergency system needs to provide air and oxygen, and absorb carbon dioxide at the same time. If external pollutants enter the emergency breathing system, the system can absorb the pollutants. In the process of gas flowing in the pipe, a silencer filter is required to silence the noise generated by the gas flow. Its principle is developed based on the small hole injection silencer theory and the decompression and expansion silencer principle. Generally, the silencer filter is installed at one end of the trachea through a threaded sleeve. In this process, one end of the silencer filter needs to be fitted with one end of the trachea, and then the threaded sleeve on the outside of one end of the silencer filter is rotated to connect. At this time, there will be a certain gap between the trachea and the silencer filter during the connection process, which will affect the overall sealing of the equipment. At the same time, due to the vibration of the equipment during operation, the threaded sleeve connecting the trachea and the silencer filter is very easy to loosen, which will affect the overall use of the equipment. Summary of the Invention

[0005] The purpose of the present invention is to provide an emergency breathing system for a deep-sea manned submersible in order to solve the problem of poor connection between the trachea and the silencer filter.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an emergency breathing system for a deep-sea manned submersible, comprising a high-pressure oxygen cylinder, the high-pressure oxygen cylinder being connected to a first high-pressure valve body assembly via an air pipe, the first high-pressure valve body assembly being connected to a first pressure-reducing valve body assembly and a first reduction gearbox via an air pipe, a first silencer filter, a second silencer filter, and a first opening valve being connected in series within the first high-pressure valve body assembly via an air pipe, the second silencer filter comprising a silencer filter body, an air inlet connecting pipe, an air outlet connecting pipe, silencer cotton, a hollow tube with holes, and a threaded sleeve, the outer side of the air inlet connecting pipe being provided with a mounting mechanism for connecting the first silencer filter to the air pipe;

[0007] The threaded sleeve is provided with a positioning mechanism for limiting the position of the threaded sleeve.

[0008] As a further scheme of the present application: the mounting mechanism comprises an annular rotating plate provided outside one end of the air inlet connecting pipe and rotatably connected to the inside of the threaded sleeve through a bearing, one end of the annular rotating plate is provided with a push rod penetrating through the annular rotating plate to the outside of one end of the threaded sleeve, one end of the push rod is welded and fixed with an annular connecting plate, one end of the sound filter body is provided with a limiting rod outside the air inlet connecting pipe, the bottom of the limiting rod is provided with an L-shaped connecting rod penetrating to the top of the limiting rod, one end of the L-shaped connecting rod is provided with an anti-skid plate, the bottom of the L-shaped connecting rod is provided with a trapezoidal block, one end of the trapezoidal block is provided with a limiting clamping plate outside the annular connecting plate, the outside of the threaded sleeve is provided with an annular clamping plate, the inside of the annular clamping plate is provided with an annular limiting groove, one end of the L-shaped connecting rod is provided with a positioning block inside the annular clamping plate, one end of the L-shaped connecting rod is provided with a positioning hole above the positioning block, the bottom of the annular rotating plate is provided with a second telescopic spring outside the push rod, the top of the limiting rod is provided with a first positioning pin, one end of the top of the limiting rod is provided with a first telescopic spring sleeved outside the first positioning pin, and one end of the air inlet connecting pipe is provided with a sealing assembly.

[0009] When the sound filter is installed, the threaded sleeve can be lost from the limiting position through the close fit of the air pipe and the air inlet connecting pipe and the air outlet connecting pipe, if the air pipe and the air inlet connecting pipe are not completely fitted, the threaded sleeve cannot be rotated, then the fitted air pipe is limited by the anti-skid plate, then the air pipe and the air inlet connecting pipe can be connected and fixed by rotating the threaded sleeve, in this process, the sealing assembly can be used to increase the sealing of the connection, thereby increasing the connection effect of the air pipe and the sound filter as a whole.

[0010] As a further scheme of the present application: the top of the trapezoidal block is provided with a sliding groove matching the bottom of one end of the L-shaped connecting rod, the height of the inclined surface of the trapezoidal block is greater than the depth of the annular clamping plate, one end of the annular rotating plate and the air outlet connecting pipe are both provided with through holes matching the push rod, and the diameter of the first positioning pin is equal to that of the positioning hole.

[0011] As a further scheme of the present application: the sealing assembly comprises a gas storage pipe provided outside one end of the air inlet connecting pipe and located inside the threaded sleeve, the inside of the gas storage pipe is provided with a piston rod penetrating to the outside of the gas storage pipe and connected to the threaded sleeve through a clamping block, and one end of the air inlet connecting pipe is provided with an annular sealing air bag.

[0012] As a further scheme of the present application: the annular sealing air bag is connected to the gas storage pipe through a connecting pipe, and the inner wall of one end of the threaded sleeve is provided with an annular sliding groove matching one end of the piston rod.

[0013] As a further solution of the present invention: the positioning mechanism includes a positioning plate welded and fixed to one end of the threaded sleeve, the top of the positioning plate is provided with a second positioning pin that penetrates to the bottom of the positioning plate, the top of the positioning plate is provided with a third telescopic spring that is sleeved on the outside of the second positioning pin, the outside of the air intake connecting pipe is provided with an annular groove located at one end of the threaded sleeve, and one end of the first positioning pin is provided with a connecting assembly.

[0014] As a further solution of the present invention: a ball is provided at one end of the second locating pin, the width of the annular groove is equal to the diameter of the bottom of the second locating pin, and the distance between the second locating pin and the annular groove is equal to the farthest distance that the piston rod can move.

[0015] As a further solution of the present invention: the connecting assembly includes a Z-shaped connecting frame arranged at the bottom of one end of the first positioning pin and extending to the bottom of the limiting rod. The bottom of the Z-shaped connecting frame is welded and fixed to a conical ring plate sleeved on the outside of the intake connecting pipe, and the top of the second positioning pin is welded and fixed to a push plate located on one side of the conical ring plate.

[0016] As a further solution of the present invention: a ball is also provided at one end of the push plate, the inner wall diameter of the conical ring plate is larger than the distance between the positioning plate and the central axis of the intake connecting pipe, the inner side of the limiting rod is provided with a sliding groove that fits with the top of the Z-shaped connecting frame, the inclined surface height of the conical ring plate is greater than the depth of the annular groove, and the movable distance of the first positioning pin is greater than the thickness of the conical ring plate.

[0017] As a further solution of the present invention: a ball is provided at one end of the push rod, and the farthest distance from one end of the annular rotating plate to the vertical center axis of the silencer filter body is smaller than the farthest distance from one end of the intake connecting pipe to the vertical center axis of the silencer filter body.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. By setting up the installation mechanism and the positioning mechanism, when installing the silencer filter, the threaded sleeve can be removed from the position by tightly fitting the air pipe with one end of the air inlet connecting pipe and the air outlet connecting pipe. At the same time, the anti-slide plate is used to limit the fitting air pipe. After that, the air pipe and the air inlet connecting pipe can be connected and fixed by rotating the threaded sleeve. In this process, the sealing assembly can be used to increase the sealing of the connection. After the air pipe and the air inlet connecting pipe are connected, the positioning mechanism can be used to increase the stability of the connection, which provides convenience for the use of the equipment.

[0020] 2、By setting the installation mechanism, when the muffler filter is installed, the threaded sleeve can be lost by the close fit of the air pipe and the air inlet connecting pipe, the threaded sleeve cannot be rotated if the air pipe and the air inlet connecting pipe are not completely fitted, then the air pipe is limited by the anti-skid plate, then the air pipe and the air inlet connecting pipe can be connected and fixed by rotating the threaded sleeve, the sealing of the connection can be increased by the sealing assembly in the process, thereby increasing the connection effect of the air pipe and the muffler filter as a whole;

[0021] 3、By setting the positioning mechanism, the threaded sleeve is screwed between the air pipe and the air inlet connecting pipe and the air outlet connecting pipe, the threaded sleeve can be limited by inserting the second positioning pin into the annular clamping groove at this time, so as to increase the stability of the connection between the air pipe and the air inlet connecting pipe and the air outlet connecting pipe, then the L-shaped connecting rod and the threaded sleeve can be simultaneously lost by the connecting mechanism, thereby providing convenience for subsequent disassembly and replacement of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the application;

[0023] Figure 2 It is a structural schematic diagram of the application; Figure 1 It is an enlarged view of A in the application;

[0024] Figure 3 It is a partial sectional view of the threaded sleeve of the application;

[0025] Figure 4 It is a structural schematic diagram of the application; Figure 3 It is an enlarged view of B in the application;

[0026] Figure 5 It is an internal structure schematic diagram of the muffler filter body of the application;

[0027] Figure 6 It is a partial sectional view of the air inlet connecting pipe of the application;

[0028] Figure 7 It is a connection schematic diagram of the L-shaped connecting rod and the first positioning pin of the application;

[0029] Figure 8 It is a connection schematic diagram of the annular rotating plate and the trapezoidal block of the application;

[0030] Figure 9 It is a flowchart of the emergency breathing system of the application;

[0031] Figure 10 It is a CPU processor operation flowchart of the application;

[0032] Figure 11 It is a gas treatment flowchart of the application.

[0033] In the figure: 1. High-pressure oxygen cylinder; 2. First silencer filter; 3001. Silencer filter body; 3002. Inlet connecting pipe; 3003. Outlet connecting pipe; 3004. Silencing cotton; 3005. Hollow tube with hole; 3006. Threaded sleeve; 60. Mounting mechanism; 601. Annular rotating plate; 602. Annular sealing airbag; 603. Push rod; 604. L-shaped connecting rod; 605. Anti-skid plate; 606. Limit rod; 607. First positioning pin; 608. First telescopic spring; 609. Positioning hole; 610, annular clamping plate; 611, positioning block; 612, trapezoidal block; 613, limiting clamping plate; 614, annular connecting plate; 615, gas storage pipe; 616, annular limiting groove; 617, second telescopic spring; 618, piston rod; 70, positioning mechanism; 701, Z-shaped connecting frame; 702, push plate; 703, conical ring plate; 704, third telescopic spring; 705, positioning plate; 706, second positioning pin; 707, annular clamping groove; 3, second muffler filter; 4, first opening valve; 5, first manual Mechanical switch knob; 6. Third silencer filter; 7. First regulating valve; 8. Breathing air bag; 9. High-pressure air bottle; 10. Fourth silencer filter; 11. Fifth silencer filter; 12. Second opening valve; 13. Second manual mechanical switch knob; 14. Sixth silencer filter; 15. Second regulating valve; 16. Inlet valve; 17. Breathing mask; 18. Exhaust valve; 19. Manual pressurized ball; 20. Carbon dioxide absorption tank; 21. Oxygen sensor; 22. Pressure sensor; 23. Pressure relief valve; 24. First reduction valve 25. First motor; 26. Display; 27. Submersible power supply; 28. Power switch; 29. ​​Second motor; 30. Second reduction gearbox; 31. CPU processor; 32. First high-pressure valve body assembly; 33. First pressure-reducing valve body assembly; 34. Second pressure-reducing valve body assembly; 35. Second high-pressure valve body assembly; 36. Air inlet; 37. First activated carbon cabin; 38. First mesh partition; 39. Lithium hydroxide cabin; 40. Second mesh partition; 41. Second activated carbon cabin; 42. Air outlet. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or connected in one piece; they can be mechanically connected or electrically connected; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internal connections between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following describes an embodiment of the present invention based on its overall structure.

[0036] See also Figures 1 to 11 In an embodiment of the present invention, an emergency breathing system for a deep-sea manned submersible includes a high-pressure oxygen cylinder 1, which is connected to a first high-pressure valve body assembly 32 through an air pipe. The first high-pressure valve body assembly 32 is connected to a first pressure-reducing valve body assembly 33 and a first reduction gearbox 24 through an air pipe. A first silencer filter 2, a second silencer filter 3, and a first opening valve 4 are connected in series in the first high-pressure valve body assembly 32 through an air pipe. The second silencer filter 3 includes a silencer filter body 3001, an air inlet connecting pipe 3002, an air outlet connecting pipe 3003, silencer cotton 3004, a hollow tube with holes 3005, and a threaded sleeve 3006. The outer side of the air inlet connecting pipe 3002 is provided with a mounting mechanism 60 for connecting the first silencer filter 2 to the air pipe; the first pressure-reducing valve body assembly 33 includes The third silencer filter 6 and the first regulating valve 7; the first pressure reducing valve body assembly 33 is connected to the second pressure reducing valve body assembly 34 through the breathing air bag 8, and the second pressure reducing valve body assembly 34 is connected to the second high-pressure valve body 35 assembly, and is controlled by the high-pressure air bottle 9; the second pressure reducing valve body assembly 34 includes the sixth silencer filter 14 and the second regulating valve 15; the second high-pressure valve body 35 includes the fourth silencer filter 10, the fifth silencer filter 11 and the second opening valve 12; the second high-pressure valve body 35 is connected to the second motor 29 and the second reduction gear box 30; the CPU processor 31 is connected to the display 26, the submersible power 27 and the power switch 28 for processing; the breathing air bag 8 is controlled and connected to the CPU processor 31 through the oxygen sensor 21, the pressure sensor 22 and the pressure relief valve 23; see the attached figure for details. Figure 9-11 The workflow here is the prior art means of the present invention;

[0037] The breathing bag 8 is connected in series with the air inlet valve 16, the breathing mask 17, the air outlet valve 18, the manual pressurizing ball 19, and the carbon dioxide absorption tank 20. Figure 9 Described, oxygen in the system is provided by high-pressure oxygen cylinder 1, oxygen enters first pressure-reducing valve body assembly 33 through first high-pressure valve body assembly 32, oxygen enters breathing airbag 8 after being reduced in pressure to 0.2Mpa, and first silencer filter 2 and second silencer filter 3 are provided in first high-pressure valve body assembly 32, and first opening valve 4 is opened, and first silencer filter 2 and second silencer filter 3 can filter the noise when gas is connected, and first opening valve 4 is opened to connect first manual mechanical switch knob 5 and reduction gear box 24, and manual mechanical switch knob 5 controls the switch of opening valve 4, and first reduction gear box 24 and first motor 25 can automatically control the flow rate of oxygen;

[0038] The gas enters through the air inlet 6 and sequentially enters the first activated carbon chamber 37, and is processed by the first mesh partition 38, the lithium hydroxide chamber 39, the second mesh partition 40 and the second activated carbon chamber 41, and finally is discharged through the air outlet 42 for processing;

[0039] The threaded sleeve 3006 is provided with a positioning mechanism 70 for limiting the threaded sleeve 3006 .

[0040] In this embodiment, when installing the first silencer filter 2, the first silencer filter 2 can be quickly installed through the installation mechanism 60. At the same time, the installation mechanism 60 also improves the sealing between the air pipe and the first silencer filter 2. After the first silencer filter 2 is installed through the installation mechanism 60, the stability of the threaded sleeve 3006 can be increased by the positioning mechanism 70. Thereafter, the assembled equipment can be put into use. During use, the gas entering the silencer filter body 3001 can be silenced once through the hollow tube with holes 3005. When the gas filling the hollow tube with holes 3005 is about to diffuse outward, the silencer cotton 3004 can be used for secondary silencer. This prevents the high-pressure gas from generating loud noise when flowing when the equipment is put into use.

[0041] Please refer to Figures 1 to 9, the mounting mechanism 60 includes an annular rotating plate 601 arranged on the outside of one end of the air intake connecting pipe 3002 and rotatably connected to the inside of the threaded sleeve 3006 through a bearing, one end of the annular rotating plate 601 is provided with a push rod 603 that passes through the annular rotating plate 601 to the outside of one end of the threaded sleeve 3006, and one end of the push rod 603 is welded and fixed with an annular connecting plate 614, and one end of the silencer filter body 3001 is provided with a limiting rod 606 located on the outside of the air intake connecting pipe 3002, and the bottom of the limiting rod 606 is provided with an L-shaped connecting rod 604 that passes through to the top of the limiting rod 606, and one end of the L-shaped connecting rod 604 is provided with an anti-skid plate 605, and the bottom of the L-shaped connecting rod 604 is provided with a trapezoidal block 612, and one end of the trapezoidal block 612 is provided. A limiting clamping plate 613 is provided on the outside of the annular connecting plate 614, an annular clamping plate 610 is provided on the outside of the threaded sleeve 3006, an annular limiting groove 616 is provided on the inner side of the annular clamping plate 610, one end of the L-shaped connecting rod 604 is provided with a positioning block 611 located on the inside of the annular clamping plate 610, one end of the L-shaped connecting rod 604 is provided with a positioning hole 609 located above the positioning block 611, a second telescopic spring 617 located on the outside of the push rod 603 is provided at the bottom of the annular rotating plate 601, a first positioning pin 607 is provided at the top of the limiting rod 606, and a first telescopic spring 608 sleeved on the outside of the first positioning pin 607 is provided at one end of the top of the limiting rod 606, and a sealing assembly is provided at one end of the air intake connecting pipe 3002.

[0042] In this embodiment, when installing the silencer filter body 3001, one end of the trachea can be buckled onto one end of the air inlet connecting pipe 3002 or the air outlet connecting pipe 3003, so that one end of the air inlet connecting pipe 3002 or the air outlet connecting pipe 3003 fits with one end of the trachea. During this process, the push rod 603 moves relative to the annular rotating plate 601 due to the squeezing of one end of the trachea. At this time, the second telescopic spring 617 stretches, so that the push rod 603 pushes the trapezoidal block 612 to move through the annular connecting plate 614 and the limiting card plate 613. The trapezoidal block 61 2 can be pulled on the L-shaped connecting rod 604 by its inclined surface, so that the L-shaped connecting rod 604 drives the anti-slide plate 605 to move toward the central axis of the intake connecting pipe 3002 as the trapezoidal block 612 moves. At the same time, the positioning block 611 moves along with the movement of the L-shaped connecting rod 604, so that one end of the positioning block 611 can be separated from the annular limiting groove 616 in the annular clamping plate 610, so that the anti-slide plate 605 is in contact with the outer wall of the trachea, and the positioning hole 609 is aligned with the first positioning pin 607. At this time, the first positioning pin 607 will be buckled into the positioning hole 609 under the action of the first telescopic spring 608, thereby limiting the L-shaped connecting rod 604, so that the anti-slide plate 605 limits the air pipe, and at the same time prevents the push rod 603 from recovering under the action of the second telescopic spring 617, thereby limiting the air pipe. When the air pipe and the air intake connecting pipe 3002 are not in contact, the positioning block 611 cannot be separated from the annular limiting groove 616. At this time, the threaded sleeve 3006 will be limited by the positioning block 611 and cannot rotate. When the air pipe is completely in contact with one end of the air intake connecting pipe 3002, the positioning block 611 can not be separated from the annular limiting groove 616. When the threaded sleeve 3006 is rotated, the threaded sleeve 3006 will move under the action of the threaded groove on the outer side of the intake connecting pipe 3002, and the push rod 603 will rotate along the central axis of the intake connecting pipe 3002 as the threaded sleeve 3006 rotates, so that the threaded sleeve 3006 can be screwed to the connection between the trachea and the intake connecting pipe 3002, so as to realize the connection between the trachea and the intake connecting pipe 3002. In this process, the sealing assembly can be used to increase the sealing of the connection between the trachea and the intake connecting pipe 3002.

[0043] Please refer to Figure 2 、 4 , 7, 8, the top of the trapezoidal block 612 is provided with a sliding groove that fits with the bottom of one end of the L-shaped connecting rod 604, the inclined surface height of the trapezoidal block 612 is greater than the depth of the annular clamping plate 610, and the annular rotating plate 601 and one end of the air outlet connecting pipe 3003 are both provided with a through hole that fits with the push rod 603, and the diameter of the first positioning pin 607 is equal to that of the positioning hole 609.

[0044] In this embodiment, by setting this structure, when the trapezoidal block 612 moves, the L-shaped connecting rod 604 will move under the action of the inclined surface of the trapezoidal block 612, so that when the positioning hole 609 moves to a position flush with the first positioning pin 607, the first positioning pin 607 is buckled into the positioning hole 609 under the action of the first telescopic spring 608, thereby achieving the limitation of the L-shaped connecting rod 604.

[0045] Please refer to Figure 1 、 3 , 4, 6, the sealing assembly includes an air storage pipe 615 arranged on the outside of one end of the air intake connecting pipe 3002 and located on the inside of the threaded sleeve 3006, the interior of the air storage pipe 615 is provided with a piston rod 618 that passes through the outside of the air storage pipe 615 and is connected to the threaded sleeve 3006 through a clamping block, and an annular sealing airbag 602 is provided at one end of the air intake connecting pipe 3002.

[0046] In this embodiment, when the threaded sleeve 3006 rotates, it will move relative to the air intake connecting pipe 3002 under the action of the outer thread of the air intake connecting pipe 3002, so that the piston rod 618 can be pushed to move, so that the piston rod 618 moves relative to the air storage pipe 615, thereby pushing the gas in the air storage pipe 615 into the annular sealing airbag 602, so that the gap between the air intake connecting pipe 3002 and the air pipe is filled by the expansion of the annular sealing airbag 602, thereby increasing the overall sealing of the equipment.

[0047] Please refer to Figure 4 、 6 The annular sealing airbag 602 is connected to the air storage pipe 615 through a connecting pipe, and the inner wall of one end of the threaded sleeve 3006 is provided with an annular groove that fits with one end of the piston rod 618.

[0048] In this embodiment, this structure is provided to prevent the piston rod 618 from hindering the rotation of the threaded sleeve 3006 , so that the piston rod 618 moves along with the movement of the threaded sleeve 3006 .

[0049] Please refer to Figure 2 、 3 , 4, 6, 7, the positioning mechanism 70 includes a positioning plate 705 welded and fixed to one end of the threaded sleeve 3006, the top of the positioning plate 705 is provided with a second positioning pin 706 that extends through to the bottom of the positioning plate 705, the top of the positioning plate 705 is provided with a third telescopic spring 704 that is sleeved on the outside of the second positioning pin 706, the outside of the air intake connecting pipe 3002 is provided with an annular groove 707 located at one end of the threaded sleeve 3006, and one end of the first positioning pin 607 is provided with a connecting component.

[0050] When the screw threaded sleeve 3006 is screwed to the connection between the air intake connecting pipe 3002 and the air pipe, the second positioning pin 706 is aligned with the annular groove 707. At this time, the second positioning pin 706 is buckled into the annular groove 707 under the action of the third telescopic spring 704. In this way, the left and right movement directions of the screw threaded sleeve 3006 can be limited, thereby preventing the screw threaded sleeve 3006 from moving relative to the connection between the air intake connecting pipe 3002 and the air pipe during use of the device, thereby increasing the stability of the connection between the air intake connecting pipe 3002 and the air pipe. When the silencer filter is replaced, the second positioning pin 706 can lose the limit of the screw threaded sleeve 3006 through the connecting assembly, thereby facilitating the disassembly of the device.

[0051] Please refer to Figure 2 A ball is provided at one end of the second positioning pin 706, the width of the annular groove 707 is equal to the diameter of the bottom of the second positioning pin 706, and the distance between the second positioning pin 706 and the annular groove 707 is equal to the farthest distance that the piston rod 618 can move.

[0052] In this embodiment, by setting this structure, when the threaded sleeve 3006 is screwed to the connection between the air intake connecting pipe 3002 and the air pipe, the second positioning pin 706 is buckled into the annular groove 707, cooperating with the thread on the outside of the air intake connecting pipe 3002 to hinder the rotation of the threaded sleeve 3006, thereby limiting the threaded sleeve 3006.

[0053] Please refer to Figure 2 、 4 7. The connecting assembly includes a Z-shaped connecting frame 701 which is arranged at the bottom of one end of the first positioning pin 607 and extends to the bottom of the limiting rod 606. The bottom of the Z-shaped connecting frame 701 is welded and fixed to the conical ring plate 703 which is sleeved on the outside of the intake connecting pipe 3002. The top of the second positioning pin 706 is welded and fixed to a push plate 702 located on one side of the conical ring plate 703.

[0054] In this embodiment, when the threaded sleeve 3006 is removed from the connection between the air intake connecting pipe 3002 and the air pipe, the first positioning pin 607 can be pulled first to separate the first positioning pin 607 from the positioning hole 609. During this process, the first telescopic spring 608 contracts and drives the conical ring plate 703 to move through the Z-shaped connecting frame 701, so that the conical ring plate 703 can move toward the second positioning pin 706. During this process, the conical ring plate 703 will squeeze the push plate 702 through the annular inclined surface at one end thereof, so that the push plate 702 is pressed against the conical ring. Under the action of the inclined surface of plate 703, it moves toward the outside of the conical ring plate 703, thereby driving the second positioning pin 706 to move, so that the second positioning pin 706 is separated from the annular groove 707, so that the L-shaped connecting rod 604 and the positioning plate 705 lose their limits at the same time, and then the threaded sleeve 3006 can be rotated in the opposite direction to restore the threaded sleeve 3006. When the threaded sleeve 3006 is separated from the trachea, the second telescopic spring 617 will push the push rod 603 to restore due to the loss of limit of the trapezoidal block 612, which provides convenience for the subsequent installation and use of the equipment.

[0055] Please refer to Figure 2 、 4 A ball bearing is also provided at one end of the push plate 702. The inner wall diameter of the conical ring plate 703 is larger than the distance between the positioning plate 705 and the central axis of the intake connecting pipe 3002. The inner side of the limiting rod 606 is provided with a sliding groove that fits with the top of the Z-shaped connecting frame 701. The height of the inclined surface of the conical ring plate 703 is greater than the depth of the annular groove 707. The movable distance of the first positioning pin 607 is greater than the thickness of the conical ring plate 703.

[0056] In this embodiment, this structure is provided to enable the conical ring plate 703 to push the push plate 702 to move when it moves, thereby causing the second positioning pin 706 to move toward the outside of the annular groove 707, thereby separating the second positioning pin 706 from the annular groove 707, thereby facilitating the disassembly of the silencer filter.

[0057] Please refer to Figure 1 、 4 6. A ball bearing is provided at one end of the push rod 603. The maximum distance from one end of the annular rotating plate 601 to the vertical center axis of the silencer filter body 3001 is smaller than the maximum distance from one end of the intake connecting pipe 3002 to the vertical center axis of the silencer filter body 3001.

[0058] In this embodiment, this structure is provided to prevent the air pipe from contacting the annular rotating plate 601 when the air pipe is fitted with the air inlet connecting pipe 3002 , thereby preventing the air pipe from obstructing the annular rotating plate 601 as the threaded sleeve 3006 rotates.

[0059] The working principle of the present invention is as follows: when installing the silencer filter body 3001, one end of the trachea can be buckled on one end of the air inlet connecting pipe 3002 or the air outlet connecting pipe 3003, so that one end of the air inlet connecting pipe 3002 or the air outlet connecting pipe 3003 fits with one end of the trachea. During this process, the push rod 603 moves relative to the annular rotating plate 601 due to the squeezing of one end of the trachea. At this time, the second telescopic spring 617 stretches, so that the push rod 603 pushes the trapezoidal block 612 to move through the annular connecting plate 614 and the limit card plate 613. When the trapezoidal block 612 moves, it can pull the L-shaped connecting rod 604 through its inclined surface, so that the L-shaped connecting rod 604 is moved with the movement of the trapezoidal block 612. The movable anti-slide plate 605 moves toward the central axis of the air intake connecting pipe 3002, and the positioning block 611 moves with the movement of the L-shaped connecting rod 604, so that one end of the positioning block 611 can be separated from the annular limiting groove 616 in the annular clamping plate 610, so that the anti-slide plate 605 is fitted with the outer wall of the trachea, and the positioning hole 609 is aligned with the first positioning pin 607. At this time, the first positioning pin 607 will be buckled into the positioning hole 609 under the action of the first telescopic spring 608, so as to limit the L-shaped connecting rod 604, so that the anti-slide plate 605 limits the trachea, and also prevents the push rod 603 from recovering under the action of the second telescopic spring 617, thereby limiting the trachea. When the air intake connecting pipe 3002 is not fitted, the positioning block 611 cannot be separated from the annular limiting groove 616. At this time, the threaded sleeve 3006 will be limited by the positioning block 611 and cannot rotate. When the air pipe is completely fitted with one end of the air intake connecting pipe 3002, the threaded sleeve 3006 is rotated. At this time, the threaded sleeve 3006 will move under the action of the threaded groove on the outer side of the air intake connecting pipe 3002. At the same time, the push rod 603 will rotate along the central axis of the air intake connecting pipe 3002 as the threaded sleeve 3006 rotates. In this way, the threaded sleeve 3006 can be screwed to the connection between the air pipe and the air intake connecting pipe 3002, thereby realizing the connection between the air pipe and the air intake connecting pipe 3002. In this process, when The threaded sleeve 3006 will push the piston rod 618 to move, so that the piston rod 618 moves relative to the gas storage tube 615, thereby pushing the gas in the gas storage tube 615 into the annular sealing airbag 602, so that the gap between the intake connecting pipe 3002 and the trachea is filled by the expansion of the annular sealing airbag 602, thereby increasing the overall sealing of the equipment. When the threaded sleeve 3006 is screwed to the connection between the intake connecting pipe 3002 and the trachea, the second positioning pin 706 is aligned with the annular groove 707. At this time, the second positioning pin 706 will be buckled into the annular groove 707 under the action of the third telescopic spring 704, so that the left and right movement direction of the threaded sleeve 3006 can be limited.Thus, the threaded sleeve 3006 is prevented from moving relative to the connection between the air inlet connecting pipe 3002 and the air pipe during use of the device, thereby increasing the stability of the connection between the air inlet connecting pipe 3002 and the air pipe, and the second positioning pin 706 can be disengaged from the threaded sleeve 3006 through the connecting assembly when the muffler filter is replaced, thereby facilitating disassembly of the device. During use of the device, oxygen is provided by the high-pressure oxygen cylinder 1, and the oxygen enters the first pressure-reducing valve assembly 33 through the first high-pressure valve assembly 32. After the oxygen is reduced to 0.2 MPa, it enters the breathing bag 8. The first high-pressure valve assembly 32 is provided with the first muffler filter 2, the second muffler filter 3, and the first opening valve 4. The first muffler filter 2 and the second muffler filter 3 can filter the noise when the gas is connected. The first opening valve 4 is connected to the first manual mechanical switch knob 5 and the first speed-reducing gear box 24. The first manual mechanical switch knob 5 controls the opening and closing of the first opening valve 4. The first speed-reducing gear box 24 and the first motor 25 can automatically control the flow rate of the oxygen.

[0060] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent replacements or changes to the technical solutions and the inventive concept of the present application within the technical scope disclosed by the present application, and such replacements or changes should be covered within the protection scope of the present application.

Claims

1. An emergency breathing system for a deep-sea manned submersible, comprising a high-pressure oxygen cylinder (1), wherein the high-pressure oxygen cylinder (1) is The air pipe is connected to a first high-pressure valve body assembly (32), the first high-pressure valve body assembly (32) is connected to a first pressure reducing valve body assembly (33) and a first reduction gear box (24) through an air pipe, the first high-pressure valve body assembly (32) is connected in series with a first silencer filter (2), a second silencer filter (3), and a first opening valve (4) through an air pipe, the second silencer filter (3) comprising a silencer filter body (3001), an air inlet connecting pipe (3002), an air outlet connecting pipe (3003), silencer cotton (3004), a hollow tube with holes (3005), and a threaded sleeve (3006), characterized in that: The outer side of the air intake connecting pipe (3002) is provided with a mounting mechanism (60) for connecting the first muffler filter (2) to the air pipe; The threaded sleeve (3006) is provided with a positioning mechanism (70) for limiting the threaded sleeve (3006); the mounting mechanism (60) comprises an annular rotating plate (601) arranged on the outer side of one end of the air intake connecting pipe (3002) and rotatably connected to the inner side of the threaded sleeve (3006) via a bearing, one end of the annular rotating plate (601) is provided with a push rod (603) penetrating the annular rotating plate (601) to the outer side of one end of the threaded sleeve (3006), one end of the push rod (603) is welded and fixed with an annular connecting plate (614), one end of the muffler filter body (3001) is provided with a limiting rod (606) located on the outer side of the air intake connecting pipe (3002), and the bottom of the limiting rod (606) is provided with an L-shaped connecting rod (614) penetrating to the top of the limiting rod (606). 04), one end of the L-shaped connecting rod (604) is provided with an anti-slip plate (605), the bottom of the L-shaped connecting rod (604) is provided with a trapezoidal block (612), one end of the trapezoidal block (612) is provided with a limiting clamping plate (613) located outside the annular connecting plate (614), the outer side of the threaded sleeve (3006) is provided with an annular clamping plate (610), the inner side of the annular clamping plate (610) is provided with an annular limiting groove (616), one end of the L-shaped connecting rod (604) is provided with a positioning block (611) located inside the annular clamping plate (610), one end of the L-shaped connecting rod (604) is provided with a positioning hole (609) located above the positioning block (611), and the bottom of the annular rotating plate (601) is provided with a second telescopic spring (617) located outside the push rod (603), A first positioning pin (607) is provided at the top of the limiting rod (606), a first telescopic spring (608) sleeved on the outside of the first positioning pin (607) is provided at one end of the top of the limiting rod (606), and a sealing assembly is provided at one end of the air intake connecting pipe (3002).

2. The emergency breathing system for a deep manned submersible according to claim 1, characterized in that: The top of the trapezoidal block (612) is provided with a sliding groove that fits with the bottom of one end of the L-shaped connecting rod (604), the inclined surface height of the trapezoidal block (612) is greater than the depth of the annular clamping plate (610), and one end of the annular rotating plate (601) and the air outlet connecting pipe (3003) are both provided with a through hole that fits with the push rod (603), and the diameter of the first positioning pin (607) is equal to that of the positioning hole (609).

3. The emergency breathing system for a deep manned submersible according to claim 2, characterized in that: The sealing assembly includes an air storage pipe (615) arranged on the outside of one end of the air intake connecting pipe (3002) and located on the inside of the threaded sleeve (3006); a piston rod (618) is arranged inside the air storage pipe (615), which passes through the outside of the air storage pipe (615) and is connected to the threaded sleeve (3006) via a clamping block; and an annular sealing airbag (602) is arranged at one end of the air intake connecting pipe (3002).

4. The emergency breathing system for a deep manned submersible according to claim 3, characterized in that: The annular sealing airbag (602) is connected to the air storage pipe (615) via a connecting pipe, and an inner wall of one end of the threaded sleeve (3006) is provided with an annular groove that fits with one end of the piston rod (618).

5. The emergency breathing system for a deep manned submersible according to claim 4, characterized in that: The positioning mechanism (70) includes a positioning plate (705) welded and fixed to one end of the threaded sleeve (3006), a second positioning pin (706) penetrating to the bottom of the positioning plate (705) is provided on the top of the positioning plate (705), and a second positioning pin (706) is provided on the top of the positioning plate (705). A third telescopic spring (704) is provided which is sleeved on the outside of the second positioning pin (706). The outside of the air intake connecting pipe (3002) is An annular groove (707) is provided on one end of the threaded sleeve (3006), and a connecting component is provided on one end of the first positioning pin (607).

6. The emergency breathing system for a deep-sea manned submersible according to claim 5, characterized in that: A ball is provided at one end of the second positioning pin (706), the width of the annular groove (707) is equal to the diameter of the bottom of the second positioning pin (706), and the distance between the second positioning pin (706) and the annular groove (707) is equal to the maximum distance that the piston rod (618) can move.

7. The emergency breathing system for a deep-sea manned submersible according to claim 6, characterized in that: The connecting assembly includes a Z-shaped connecting frame (701) arranged at the bottom of one end of the first positioning pin (607) and extending to the bottom of the limiting rod (606); the bottom of the Z-shaped connecting frame (701) is welded and fixed to a conical ring plate (703) sleeved on the outside of the intake connecting pipe (3002); and the top of the second positioning pin (706) is welded and fixed to a push plate (702) located on one side of the conical ring plate (703).

8. The emergency breathing system for a deep-sea manned submersible according to claim 7, characterized in that: The push plate A ball bearing is also provided at one end of (702), the inner wall diameter of the conical ring plate (703) is larger than the distance between the positioning plate (705) and the central axis of the air intake connecting pipe (3002), the inner side of the limiting rod (606) is provided with a sliding groove that fits with the top of the Z-shaped connecting frame (701), the inclined surface height of the conical ring plate (703) is larger than the depth of the annular groove (707), and the movable distance of the first positioning pin (607) is larger than the thickness of the conical ring plate (703).

9. The emergency breathing system for a deep-sea manned submersible according to claim 8, characterized in that: A ball bearing is provided at one end of the push rod (603), and the maximum distance from one end of the annular rotating plate (601) to the vertical center axis of the muffler filter body (3001) is smaller than the maximum distance from one end of the air intake connecting pipe (3002) to the vertical center axis of the muffler filter body (3001).

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