Valve structure of an emergency escape breathing device

Abstract

This utility model relates to a valve structure for an emergency escape breathing device, belonging to the technical field of air-supply type escape breathing apparatus. The valve body is screwed onto the gas cylinder, and a pressure gauge is installed on the upper end of the valve body for easy inspection and storage. Its display interface is collinear with the cylinder axis, allowing direct observation of the pressure reading. A release device is located on the side of the medium-pressure interface, used to quickly open the medium-pressure interface during an emergency escape. The valve body depressurizes the high-pressure air in the cylinder and supplies air to the medium-pressure interface, which in turn supplies air to the breathing hood at the other end of the tube. The valve structure, along with the gas cylinder and breathing device, is placed in a regular rectangular bag. One end of the bag has a viewing window, and the pressure gauge's display interface matches this window, allowing pressure observation without removing the device. A flow-limiting screw for adjusting the gas flow is also provided on the side of the valve body. The valve structure of this utility model is reasonably designed, easy to inspect and store, and improves the safety and practicality of the equipment, making it suitable for emergency escape scenarios.

Description

Technical Field

[0001] This utility model relates to a valve structure for an emergency escape breathing device, belonging to the technical field of air-supply type escape breathing apparatus. Background Technology

[0002] An escape breathing apparatus typically consists of a compressed air cylinder, a pressure reducing valve located at the cylinder head, and a breathing mask. The cylinder contains high-pressure compressed air. When in use, the high-pressure air in the cylinder is reduced in pressure by the pressure reducing valve and then delivered through the air supply tube to the head cover, allowing the user to breathe fresh air.

[0003] Due to its design, the valve structure of the current escape breathing apparatus makes it difficult to stack and store in a bag after it is put in, taking up a lot of space. Moreover, the escape equipment requires frequent pressure checks during routine maintenance, and each check requires taking the equipment out of the bag, which is cumbersome, time-consuming and laborious. Utility Model Content

[0004] This invention overcomes the shortcomings of the existing technology and provides a valve structure for an emergency escape breathing device. It can be stacked and stored in a bag, and air pressure detection can be completed without taking it out of the bag.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a valve structure for an emergency escape breathing device, including a valve body, an inflation port, and a medium-pressure port. The valve body is screwed onto a gas cylinder. The valve body is provided with an inflation port and a medium-pressure port. The inflation port is used to inflate the gas cylinder, and the medium-pressure port is used to connect to the breathing device. A pressure gauge is provided at the upper end of the valve body, i.e., located on the side away from the valve body, for easy inspection and storage. The vertical line of the display interface of the pressure gauge is collinear with the axis of the gas cylinder. The inflation port and the medium-pressure port are respectively located on both sides of the valve body, and the axes of the inflation port and the medium-pressure port are perpendicular to the axis of the gas cylinder. A release device is provided on the side of the medium-pressure port, and the release device is used to open or close the medium-pressure port in an emergency.

[0006] Furthermore, the valve structure, along with the gas cylinder and breathing device, is placed in a regular rectangular shoulder bag. The shoulder bag is easy to stack and store. A viewing window is provided on one end face of the shoulder bag, and the display interface of the pressure gauge is matched to the viewing window, so that the pressure of the valve structure can be observed without taking it out of the shoulder bag, which is convenient for inspection.

[0007] Furthermore, a pressure relief port for connecting a safety valve is provided on the side of the valve body perpendicular to the axis of the inflation port and the medium-pressure port, and the axis of the pressure relief port is also perpendicular to the axis of the gas cylinder.

[0008] Furthermore, the structure of the release device includes a sealing needle, an O-ring, a sealing needle sealing ring, a sealing needle sheath, a quick-release pin, a pressure plate, and an insert-type snap ring. The sealing needle is inserted into the side of the valve body, and an O-ring and a sealing needle sealing ring are sequentially arranged at the insertion end of the sealing needle. The sealing needle sheath is fitted onto the sealing needle, and the sealing needle is located at the side port of the valve body. The quick-release pin is located on the outside of the valve body and passes through the sealing needle sheath and the sealing needle. The pressure plate is located at the outer end of the sealing needle and is inserted into the sealing needle sheath and the sealing needle and secured to the sealing needle sheath by the insert-type snap ring.

[0009] Furthermore, the breathing device is a breathing head cover.

[0010] Furthermore, a flow-limiting screw is provided on the valve body side opposite to the release device, and the flow-limiting screw is used to adjust the gas flow rate entering the breathing device.

[0011] The advantages of this invention compared to existing technologies are as follows: In this invention, the pressure gauge is installed on the upper end face of the valve body, and its display interface is collinear with the cylinder axis. This design makes the pressure gauge reading clearly visible and easy to inspect. Simultaneously, the valve structure, along with the cylinder and breathing apparatus, is housed in a rectangular bag. A viewing window is provided on one end face of the bag, and the pressure gauge display interface corresponds to this window. Therefore, the pressure gauge reading can be directly observed without removing the valve structure from the bag, greatly reducing the frequent opening of the bag during routine maintenance, improving work efficiency, and reducing the risk of equipment damage due to frequent bag opening. Furthermore, the rectangular bag facilitates stacking and storage, saving storage space and allowing multiple escape breathing apparatuses to be neatly stacked together, facilitating management and transportation. In addition, the bag's design makes it easy to carry, allowing users to conveniently carry the escape breathing apparatus, improving the equipment's practicality. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a top view of the present invention.

[0015] Figure 3 This is the usage state of the present utility model. Figure 1 .

[0016] Figure 4 This is the usage state of the present utility model. Figure 2 .

[0017] Figure 5 This is a schematic diagram of the exploded structure of this utility model.

[0018] Figure 6 This is a schematic diagram of the cross-sectional structure of the present invention. Figure 1 .

[0019] Figure 7 This is a schematic diagram of the cross-sectional structure of the present invention. Figure 2 .

[0020] In the diagram: 1 is the valve body, 2 is the inflation port, 3 is the medium pressure port, 4 is the pressure gauge, 5 is the release device, 51 is the sealing needle, 52 is the O-ring, 53 is the sealing needle sealing ring, 54 is the sealing needle sheath, 55 is the quick release pin, 56 is the pressure plate, 57 is the insert-type snap ring, 6 is the gas cylinder, 7 is the breathing device, 8 is the shoulder bag, 9 is the viewing window, 10 is the alarm whistle, 11 is the pressure relief port, 12 is the flow limiting screw, and 13 is the identification sticker. Detailed Implementation

[0021] The present invention will be further described below with reference to specific embodiments.

[0022] like Figures 1 to 7 As shown, the valve structure of an emergency escape breathing device of this utility model includes a valve body 1, an inflation port 2, and a medium-pressure port 3. The valve body 1 is screwed onto a gas cylinder 6. The valve body 1 is provided with an inflation port 2 and a medium-pressure port 3. The inflation port 2 is used to inflate the gas cylinder 6. The medium-pressure port 3 is used to connect to the breathing device 7. A pressure gauge 4 is provided at the upper end of the valve body 1, located on the side away from the valve body 1, for easy inspection and storage. The vertical line of the display interface of the pressure gauge 4 is collinear with the axis of the gas cylinder. The inflation port 2 and the medium-pressure port 3 are respectively provided on both sides of the valve body 1, and the axes of the inflation port 2 and the medium-pressure port 3 are perpendicular to the axis of the gas cylinder 6. A release device 5 is provided on the side of the medium-pressure port 3. The release device 5 is used to open or close the medium-pressure port 3 in an emergency. The valve structure, along with the gas cylinder 6 and the breathing device 7, is housed in a rectangular crossbody bag 8. The bag 8 is designed for easy stacking and storage. A viewing window 9 is located on one end of the bag 8, and the display interface of the pressure gauge 4 corresponds to this window 9. This allows the pressure of the valve structure to be observed without removing the bag 8, facilitating inspection. The breathing device 7 is a breathing hood.

[0023] In this embodiment, the structure of the release device 5 includes a sealing needle 51, an O-ring 52, a sealing needle sealing ring 53, a sealing needle sheath 54, a quick-release pin 55, a pressure plate 56, and an insert-type snap ring 57. The sealing needle 51 is inserted into the side of the valve body 1. The insertion end of the sealing needle 51 is sequentially provided with an O-ring 52 and a sealing needle sealing ring 53. The sealing needle sheath 54 is fitted onto the sealing needle 51, and the sealing needle 51 is located at the side port of the valve body 1. The quick-release pin 55 is located on the outside of the valve body 1 and passes through the sealing needle sheath 54 and the sealing needle 51. The pressure plate 56 is located at the outer end of the sealing needle 51 and is fixed to the sealing needle 51 by the insert-type snap ring 57.

[0024] In this embodiment, an alarm whistle 10 and a pressure relief port 11 for connecting to a safety valve are respectively provided on the side of the valve body 1 perpendicular to the axis of the inflation port 2 and the medium pressure port 3, and the axes of the alarm whistle 10 and the pressure relief port 11 are also perpendicular to the axis of the gas cylinder.

[0025] In this embodiment, a flow-limiting screw 12 is provided on the side of the valve body 1 opposite to the release device 5. The flow-limiting screw 12 is used to adjust the gas flow rate entering the breathing device 7. An identification sticker 13 is affixed to the outside of the flow-limiting screw 12.

[0026] The structure and working principle of this utility model are as follows: In this invention, the valve body 1 is screwed onto the gas cylinder 6. The valve body 1 is equipped with an inflation port 2 and a medium-pressure port 3. The inflation port 2 is used to inflate the gas cylinder 6, and the medium-pressure port 3 is used to connect to the breathing apparatus 7. A pressure gauge 4 is mounted on the upper end face of the valve body 1. The vertical line of the pressure gauge 4's display interface is collinear with the axis of the gas cylinder. This design makes the installation position of the pressure gauge 4 convenient for inspection and storage. When it is necessary to observe the pressure, the pressure value inside the gas cylinder 6 can be read directly through the pressure gauge 4 without opening the bag 8, greatly reducing the frequent opening of the bag 8 during daily maintenance, improving work efficiency, and also reducing the risk of equipment damage due to frequent bag opening.

[0027] In this invention, the valve structure, along with the gas cylinder 6 and the breathing device 7, is housed in a rectangular crossbody bag 8, which is easy to stack and store. A viewing window 9 is provided on one end face of the bag 8, and the display interface of the pressure gauge 4 corresponds to this viewing window 9. This design allows for clear observation of the pressure gauge 4 reading even when the valve structure is inside the bag 8, further facilitating pressure checks.

[0028] In actual use, when the gas cylinder 6 needs to be filled, it is done through the filling port 2. When the breathing apparatus 7 needs to be used, it is connected through the medium-pressure port 3. At the same time, the pressure gauge 4 can be used to check whether the gas pressure in the gas cylinder 6 is sufficient to ensure that the breathing apparatus 7 can work normally. When an emergency requires the medium-pressure port 3 to be closed quickly, the release device 5 plays an important role. Its structure includes a sealing needle 51, an O-ring 52, a sealing needle sealing ring 53, a sealing needle sheath 54, a quick-release pin 55, a pressure plate 56, and an insert-type snap ring 57. Through the cooperation of these components, the medium-pressure port 3 can be opened or closed quickly in an emergency, ensuring the safety of the user.

[0029] In addition, an alarm whistle 10 and a pressure relief port 11 for connecting to a safety valve are respectively provided on the side of the valve body 1, perpendicular to the axis of the inflation port 2 and the medium-pressure port 3. The axes of the alarm whistle 10 and the pressure relief port 11 are both perpendicular to the axis of the gas cylinder. The alarm whistle 10 can sound an alarm when the gas pressure is insufficient, reminding the user to refill the gas in time; the pressure relief port 11 can release pressure when the gas pressure is too high, ensuring the safe operation of the equipment.

[0030] In this invention, a flow-limiting screw 12 is provided on the side of the valve body 1 opposite to the release device 5. The flow-limiting screw 12 is used to adjust the gas flow rate entering the breathing device 7. An identification sticker 13 is pasted on its outside to facilitate the user to adjust the gas flow rate as needed, ensuring that the breathing device 7 can provide a suitable air supply.

[0031] In summary, the valve structure of the emergency escape breathing device of this utility model, through reasonable design and layout, allows the reading of the pressure gauge 4 to be observed without opening the bag 8. At the same time, the regular shape design of the bag 8 also facilitates stacking and storage, improving the ease of use and safety of the device.

[0032] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A valve structure for an emergency escape breathing device, comprising a valve body (1), an inflation port (2), and a medium-pressure port (3), wherein the valve body (1) is screwed onto a gas cylinder (6), the valve body (1) is provided with an inflation port (2) and a medium-pressure port (3), the inflation port (2) is used to inflate the gas cylinder (6), and the medium-pressure port (3) is used to connect to a breathing device (7), characterized in that, A pressure gauge (4) is provided at the upper end of the valve body (1), that is, on the side facing away from the valve body (1), which is convenient for inspection and storage. The vertical line of the display interface of the pressure gauge (4) is collinear with the axis of the gas cylinder. The filling port (2) and the medium pressure port (3) are respectively provided on both sides of the valve body (1), and the axes of the filling port (2) and the medium pressure port (3) are set perpendicular to the axis of the gas cylinder (6). A release device (5) is provided on the side of the medium pressure port (3), which is used to open or close the medium pressure port (3) in an emergency.

2. The valve structure of the emergency escape breathing device according to claim 1, characterized in that, The valve structure, together with the gas cylinder (6) and the breathing device (7), is placed in a regular rectangular crossbody bag (8). The crossbody bag (8) is easy to stack and store. A viewing window (9) is provided on one end face of the crossbody bag (8). The display interface of the pressure gauge (4) is matched to the viewing window (9), so that the pressure of the valve structure can be observed without taking out the crossbody bag (8), which is convenient for inspection.

3. The valve structure of an emergency escape breathing device according to claim 1 or 2, characterized in that, A pressure relief port (11) for connecting a safety valve is provided on the side of the valve body (1) perpendicular to the axis of the inflation port (2) and the medium pressure port (3), and the axis of the pressure relief port (11) is also perpendicular to the axis of the gas cylinder.

4. The valve structure of the emergency escape breathing device according to claim 1, characterized in that, The release device (5) has the following structure: it includes a sealing needle (51), an O-ring (52), a sealing needle ring (53), a sealing needle sheath (54), a quick-release pin (55), a pressure plate (56), and an insert-type snap ring (57). The sealing needle (51) is inserted into the side of the valve body (1). The insertion end of the sealing needle (51) is provided with an O-ring (52) and a sealing needle ring (53) in sequence. The sealing needle sheath (54) is fitted onto the sealing needle (51). 51) and the sealing needle (51) is located at the side port of the sealing needle (51) and the valve body (1). The quick release pin (55) is located on the outside of the valve body (1). The quick release pin (55) passes through the sealing needle sleeve (54) and the sealing needle (51). The pressure plate (56) is located at the outer end of the sealing needle (51) and is inserted into the sealing needle sleeve (54) and the sealing needle (51) by the insert-type snap ring (57) and is locked on the sealing needle sleeve (54).

5. The valve structure of the emergency escape breathing device according to claim 1, characterized in that, The breathing device (7) is a breathing head cover.

6. The valve structure of the emergency escape breathing device according to claim 1, characterized in that, A flow-limiting screw (12) is provided on the side of the valve body (1) opposite to the release device (5). The flow-limiting screw (12) is used to adjust the gas flow rate entering the breathing device (7).

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