Flow-adjustable compressed oxygen self-rescuer

Abstract

The utility model relates to the technical field of personnel self-rescue escape devices, and discloses a flow-adjustable compressed oxygen self-rescuer which comprises a self-rescuer body and a breathing air bag, the self-rescuer body comprises a compressed oxygen container communicated with the breathing air bag, a pressure reducer is communicated between the compressed oxygen container and the breathing air bag, a flow adjusting valve is arranged on the breathing air bag, and the flow adjusting valve is connected with the compressed oxygen container. The flow adjusting valve comprises an air inlet channel, an air outlet and an adjusting component driven by external force, the air inlet channel and the air outlet are both arranged in an inner cavity of the breathing air bag, the adjusting component is exposed out of the outer side of the breathing air bag, the air inlet channel is communicated with a pressure reducing outlet of the pressure reducer, and the air outlet is communicated with the inner cavity. According to the flow-adjustable compressed oxygen self-rescuer, the flow adjusting valve is arranged on the breathing air bag, so that the flow input into the inner cavity of the breathing air bag can be adjusted conveniently, the flow discharged into the inner cavity of the air bag can be reduced when rescue is waited in a safe area, and therefore the service time is prolonged, and the rescue success probability is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of personnel self-rescue and escape devices, in particular to a flow-adjustable compressed oxygen self-rescuer. Background Art

[0002] Compressed oxygen self-rescuer is a self-rescue escape device that uses high-pressure compressed oxygen as an oxygen source. It is mainly used in coal mines, firefighting and other fields. When toxic and harmful gas leaks and hypoxia and suffocation disasters occur in the working environment, on-site personnel can wear compressed oxygen self-rescuers to escape from the disaster area and achieve self-rescue. The principle of the isolated compressed oxygen self-rescuer is that when a coal mine accident occurs, the bottle valve switch is opened, and the high-pressure oxygen is reduced to normal atmospheric pressure through the pressure reducer, and then flows out to the breathing airbag at the constant flow port of the pressure reducer for people to breathe. However, some existing compressed oxygen self-rescuers have a fixed flow rate discharged to the airbag cavity through the pressure reducer after the bottle valve switch is opened, which is not convenient for adjustment; when personnel evacuate to a safe area to wait for rescue (at this time, the human body is in a relatively quiet state, and the demand for oxygen at this time is less than the demand for oxygen when running evacuation), it is not convenient to reduce the flow rate discharged to the airbag cavity, and it is difficult to extend the use time to increase the probability of successful rescue. Utility Model Content

[0003] To solve at least one aspect of the above problems, the utility model provides a flow-adjustable compressed oxygen self-rescuer, comprising: a self-rescuer body and a breathing airbag, the self-rescuer body comprising a compressed oxygen container connected to the breathing airbag, a pressure reducer connected between the compressed oxygen container and the breathing airbag, characterized in that a flow regulating valve is arranged on the breathing airbag, the flow regulating valve comprises an air inlet channel, an air outlet and an adjusting component driven by an external force, the air inlet channel and the air outlet are both placed in the inner cavity of the breathing airbag, the adjusting component is exposed on the outside of the breathing airbag, the air inlet channel is connected to the pressure reducing outlet of the pressure reducer, the air outlet is connected to the inner cavity, and the adjusting component is used to adjust the outlet flow of the air outlet; the utility model flow-adjustable compressed oxygen self-rescuer, the breathing airbag is provided with a flow regulating valve, which is convenient for adjusting the flow input into the inner cavity of the breathing airbag, so as to reduce the flow discharged to the inner cavity of the airbag when waiting for rescue in a safe area, thereby extending the use time and increasing the success rate of rescue.

[0004] Optionally, the air inlet channel includes a channel inlet and a channel outlet, the channel inlet is connected to the pressure reducing outlet, the adjusting component is an adjusting rod, a sealing plug corresponding to the channel outlet is provided at one end of the adjusting component close to the channel outlet, and a first flow channel and a second flow channel are provided between the channel outlet and the air outlet; when the sealing plug abuts against the channel outlet, the first flow channel is blocked and the second flow channel is connected; when the sealing plug is detached from the channel outlet, both the first flow channel and the second flow channel are connected.

[0005] Optionally, an end of the sealing plug close to the channel outlet is provided with an abutment slope in an annular shape.

[0006] Optionally, one end of the second flow channel is communicated with the channel outlet, and the other end of the second flow channel is communicated with the air outlet, and the second flow channel includes a first airway, a constant flow airway, and a second airway that are connected.

[0007] Optionally, a constant flow plate is provided on the regulating component, the first air channel is provided on the sealing plug, the constant flow air channel is provided on the constant flow plate, and the second air channel is provided on the regulating component.

[0008] Optionally, the flow regulating plate is disposed at an end of the sealing plug away from the channel outlet, and a first sealing ring is provided between the sealing plug and the regulating component.

[0009] Optionally, the flow regulating valve also includes a shell fixedly connected to the breathing airbag, the air inlet channel and the air outlet are both arranged on the shell, the regulating component is threadedly connected to the shell, and a second sealing ring is arranged between the regulating component and the shell.

[0010] Optionally, a limit abutment portion is provided on the adjusting component, and a limit pin for abutting against the limit abutment portion for limiting position is provided on the shell.

[0011] Optionally, the pressure-reducing outlet is a constant-flow outlet, and a hose is connected between the pressure-reducing outlet and the air inlet passage, and the hose is placed in the inner cavity.

[0012] Optionally, the longitudinal section of the breathing airbag includes a side edge, and the flow regulating valve is arranged on the side edge.

[0013] Optionally, the breathing airbag is provided with an exhaust valve for exhausting the inner cavity gas, and the outer side of the exhaust valve is connected to a human breathing apparatus via a breathing catheter, and the human breathing apparatus is a breathing mouthpiece or a breathing mask.

[0014] Compared with the prior art, the utility model has an adjustable flow compressed oxygen self-rescuer, in which a flow regulating valve is arranged on the breathing airbag, which is convenient for adjusting the flow input into the inner cavity of the breathing airbag, so that the flow discharged into the inner cavity of the airbag can be reduced when waiting for rescue in a safe area, thereby extending the use time and increasing the success rate of rescue; the flow regulating valve is arranged in a conspicuous and easy-to-operate position by hand, which reduces the difficulty of adjustment and improves the convenience of operation during escape; a first sealing ring is arranged between the sealing plug and the adjusting component to avoid air leakage and ensure reliable use; the position in which the adjusting component is released is limited by a limit pin to prevent the adjusting component from falling off and ensure reliable use; a second sealing ring is arranged between the adjusting component and the shell to prevent gas from leaking to the outside through the gap between the adjusting component and the shell, thereby avoiding waste of oxygen and ensureing reliable use; the flow regulating valve has a compact structure and a small size, and avoids occupying too much space in the inner cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model flow-adjustable compressed oxygen self-rescuer;

[0016] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0017] Figure 3 for Figure 1 Enlarged view of middle part B;

[0018] Figure 4 This is a schematic diagram of the structure of the flow regulating valve of the flow-adjustable compressed oxygen self-rescuer of the utility model;

[0019] The names of the components corresponding to the various figure marks in the figure are: 1 is the self-rescuer body, 2 is the breathing airbag, 21 is the inner cavity, 3 is the compressed oxygen container, 4 is the pressure reducer, 41 is the pressure reduction outlet, 5 is the flow regulating valve, 51 is the air inlet channel, 511 is the channel inlet, 512 is the channel outlet, 52 is the air outlet, 53 is the adjusting component, 531 is the rotating adjusting disk, 532 is the limiting abutment part, 533 is the limiting pin, 54 is the sealing plug, 541 is the abutment inclined surface, 55 is the first flow channel, 56 is the second flow channel, 561 is the first airway, 562 is the constant flow airway, 563 is the second airway, 57 is the constant flow plate, 58 is the shell, 61 is the first sealing ring, 62 is the second sealing ring, 7 is the hose, 8 is the side, 91 is the exhaust valve, 92 is the breathing catheter, 93 is the human breathing apparatus, and 94 is the nose clip. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0021] In the description of the present invention, it should be understood that the terms "upper" and "lower" and the like indicate positions or location relationships that are based on the positions or location relationships when the product is in normal use.

[0022] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0023] See also Figure 1-Figure 4 The embodiment of the utility model provides a flow-adjustable compressed oxygen self-rescuer, comprising: a self-rescuer body 1 and a breathing airbag 2, the self-rescuer body 1 comprises a compressed oxygen container 3 connected to the breathing airbag 2, the compressed oxygen container 3 is used to store compressed oxygen; a pressure reducer 4 is connected between the compressed oxygen container 3 and the breathing airbag 2, the pressure reducer is a prior art and is not described here; a flow regulating valve 5 is arranged on the breathing airbag 2, the flow regulating valve 5 comprises an air inlet channel 51, an air outlet 52 and an adjusting component 53 driven by an external force, the air inlet channel 51 and the air outlet 52 are both placed in the inner cavity 21 of the breathing airbag 2 There are several air outlets 52 arranged in a ring shape, and the adjusting component 53 is exposed on the outside of the breathing airbag 2, which is convenient for the user to adjust the operation by hand, and the operation is convenient; the air inlet channel 51 is connected with the decompression outlet 41 of the pressure reducer 4, and the air outlet 52 is connected with the inner cavity 21, and the adjusting component 53 is used to adjust the outlet flow of the air outlet 52; the utility model has a flow-adjustable compressed oxygen self-rescuer, and a flow regulating valve is provided on the breathing airbag, which is convenient for adjusting the flow input into the inner cavity of the breathing airbag, so as to reduce the flow discharged to the inner cavity of the airbag when waiting for rescue in a safe area, thereby extending the use time and increasing the chance of successful rescue.

[0024] See also Figure 1 , Figure 3 and Figure 4The air inlet channel 51 includes a channel inlet 511 and a channel outlet 512, the channel inlet 511 is connected to the pressure reducing outlet 41, the adjusting component 53 is an adjusting rod, and a sealing plug 54 corresponding to the channel outlet 512 is provided at one end of the adjusting component 53 close to the channel outlet 512, and one end of the sealing plug 54 can be annularly abutted against the channel outlet 512; a first flow channel 55 and a second flow channel 56 are provided between the channel outlet 512 and the air outlet 52; when the sealing plug 54 abuts against the channel outlet 512, the first flow channel 55 is blocked and the second flow channel 56 is connected, and at this time, the gas is discharged to the air outlet 52 through the second flow channel 56, and the discharge flow of the air outlet 52 is the first flow; when the sealing plug 54 is separated from the channel outlet 512, the first flow channel 55 and the second flow channel 56 are both connected, and at this time, the gas is discharged to the outlet through the first flow channel 55 and the second flow channel 56 at the same time The gas is discharged from the gas port 52, and the discharge flow rate of the gas outlet 52 is: a second flow rate different from the first flow rate. In this embodiment, the flow rate input at the channel inlet 511 is constant, the first flow rate is less than the second flow rate, the first flow rate is 0.5L / min, and the second flow rate is 2.1L / min; the sealing plug 54 is provided with an abutting slope 541 in an annular shape at one end close to the channel outlet 512, and the abutting slope 541 is used to abut against the channel outlet 512 for a stable abutment; one end of the second flow channel 56 is connected to the channel outlet 512, and the other end of the second flow channel 56 is connected to the gas outlet 52, and the second flow channel 56 includes a first airway 561, a constant flow airway 562 and a second airway 563 which are connected in sequence, the diameter of the constant flow airway 562 is smaller than the diameter of the first airway 561, the diameter of the constant flow airway 562 is smaller than the second airway 563, and the constant flow airway 562 is in the shape of a small hole for limiting and reducing the flow rate.

[0025] See also Figure 1 , Figure 3 and Figure 4, a constant flow plate 57 is arranged on the regulating component 53, a first airway 561 is arranged on the sealing plug 54, a constant flow airway 562 is arranged at the center position of the constant flow plate 57, and a second airway 563 is arranged on the regulating component 53. The flow regulating valve 5 has a compact structure and a small volume, and avoids occupying too much space in the inner cavity; the constant flow plate 57 is placed at the end of the sealing plug 54 away from the channel outlet 512, and a first sealing ring 61 is arranged between the sealing plug 54 and the regulating component 53 to avoid the problem of air leakage, and the use is reliable; the flow regulating valve 5 also includes a shell 58 fixedly connected to the breathing airbag 2, and the air intake The channel 51 and the air outlet 52 are both arranged on the shell 58, and the adjusting component 53 is threadedly connected to the shell 58. A rotating adjusting disk 531 is arranged at one end of the adjusting component 53 away from the sealing plug 54, so that the user can hold it by hand for rotation adjustment. By rotating the adjusting component 53 circumferentially by hand, the sealing plug 54 is driven to resist / disengage from the channel outlet 512, so as to adjust the flow rate. A second sealing ring 62 is arranged between the adjusting component 53 and the shell 58 to prevent gas from leaking to the outside through the gap between the adjusting component 53 and the shell 58, thereby avoiding waste of oxygen and ensuring reliable use.

[0026] See also Figure 1-Figure 4 , a limited abutment portion 532 is provided on the adjusting component 53, and a limit pin 533 for limiting the position against the limit abutment portion 532 is provided on the shell 58. The adjusting component 53 has a tightened state of being tightened toward one side of the inner cavity and a loosened state of being loosened outward. When the adjusting component 53 is tightened, the air outlet 52 outputs a first flow rate, and when the adjusting component 53 is loosened, the air outlet 52 outputs a second flow rate; in the initial state, the adjusting component 53 is in a loosened state, and the limit pin limits the loosened position of the adjusting component 53 to prevent the adjusting component 53 from falling off, and the use is reliable; the decompression outlet 41 is a constant flow outlet, and the constant flow outlet is in the shape of a small hole, thereby reducing and limiting the gas flow rate discharged from the decompression outlet 41. In this embodiment, the flow rate discharged from the decompression outlet 41 is 2.1L / min; a hose 7 is connected between the decompression outlet 41 and the air inlet channel 51, and the hose 7 is placed in the inner cavity 21. In this embodiment, the hose 7 is a medical-grade hose, which is non-toxic and safe to use.

[0027] See also Figure 1The longitudinal section of the breathing airbag 2 is rectangular and includes a side 8. When the airbag is inflated, it will expand into a balloon shape similar to an elliptical cylinder. The flow regulating valve 5 is arranged on the side 8. The flow regulating valve 5 is arranged at a conspicuous and easy-to-operate position by hand, which reduces the difficulty of adjustment and improves the convenience of operation during escape; the breathing airbag 2 is provided with an exhaust valve 91 for discharging the gas from the inner cavity 21. The exhaust valve 91 is a prior art and is not described here; the outside of the exhaust valve 91 is connected to a human breathing device 93 through a breathing catheter 92. The human breathing device 93 is a breathing mouthpiece or a breathing mask. A nose clip 94 is connected to the human breathing device 93 to prevent the user from accidentally inhaling harmful gases through the nose when escaping. The user has high safety in use and increases the chance of rescue.

[0028] The utility model discloses a flow-adjustable compressed oxygen self-rescuer, a flow regulating valve is arranged on the breathing airbag, which is convenient for adjusting the flow input into the inner cavity of the breathing airbag, so that the flow discharged into the inner cavity of the airbag can be reduced when waiting for rescue in a safe area, thereby extending the use time and increasing the success rate of rescue; the flow regulating valve is arranged at a conspicuous and easy-to-operate position by hand, which reduces the difficulty of adjustment and improves the convenience of operation during escape; a first sealing ring is arranged between the sealing plug and the adjusting component to avoid the problem of air leakage, and the use is reliable; the position where the adjusting component is loosened is limited by a limit pin to prevent the adjusting component from falling off, and the use is reliable; the flow regulating valve has a compact structure and a small size, and avoids occupying too much space in the inner cavity; a second sealing ring is arranged between the adjusting component and the shell to avoid gas leakage to the outside through the gap between the adjusting component and the shell, thereby avoiding waste of oxygen, and the use is reliable.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A flow-adjustable compressed oxygen self-rescuer, comprising: A self-rescuer body (1) and a breathing airbag (2), wherein the self-rescuer body (1) comprises a compressed oxygen container (3) connected to the breathing airbag (2), a pressure reducer (4) is connected between the compressed oxygen container (3) and the breathing airbag (2), and is characterized in that a flow regulating valve (5) is provided on the breathing airbag (2), the flow regulating valve (5) comprises an air inlet channel (51), an air outlet (52) and an adjusting component (53) driven by an external force, the air inlet channel (51) and the air outlet (52) are both placed in the inner cavity (21) of the breathing airbag (2), the adjusting component (53) is exposed to the outside of the breathing airbag (2), the air inlet channel (51) is connected to the pressure reducing outlet (41) of the pressure reducer (4), the air outlet (52) is connected to the inner cavity (21), and the adjusting component (53) is used to adjust the air outlet flow of the air outlet (52).

2. The flow-adjustable compressed oxygen self-rescuer according to claim 1, characterized in that: The air inlet channel (51) comprises a channel inlet (511) and a channel outlet (512); the channel inlet (511) is connected to the pressure reducing outlet (41); the regulating component (53) is an regulating rod; a sealing plug (54) corresponding to the channel outlet (512) is arranged at one end of the regulating component (53) close to the channel outlet (512); a first flow channel (55) and a second flow channel (56) are arranged between the channel outlet (512) and the air outlet (52); when the sealing plug (54) abuts against the channel outlet (512), the first flow channel (55) is blocked and the second flow channel (56) is connected; when the sealing plug (54) is separated from the channel outlet (512), the first flow channel (55) and the second flow channel (56) are both connected.

3. The flow-adjustable compressed oxygen self-rescuer according to claim 2, characterized in that: An abutting inclined surface (541) is provided in an annular manner at one end of the sealing plug (54) close to the channel outlet (512).

4. The flow-adjustable compressed oxygen self-rescuer according to claim 2, characterized in that: One end of the second flow channel (56) is in communication with the channel outlet (512), and the other end of the second flow channel (56) is in communication with the air outlet (52). The second flow channel (56) comprises a first air channel (561), a constant flow air channel (562), and a second air channel (563) which are connected to each other.

5. The flow-adjustable compressed oxygen self-rescuer according to claim 4, characterized in that: The regulating component (53) is provided with a constant flow plate (57), the first air channel (561) is provided on the sealing plug (54), the constant flow air channel (562) is provided on the constant flow plate (57), and the second air channel (563) is provided on the regulating component (53).

6. The flow-adjustable compressed oxygen self-rescuer according to claim 5, characterized in that: The flow regulating plate (57) is disposed at an end of the sealing plug (54) away from the channel outlet (512), and a first sealing ring (61) is provided between the sealing plug (54) and the regulating component (53).

7. The flow-adjustable compressed oxygen self-rescuer according to claim 1, characterized in that: The flow regulating valve (5) further comprises a shell (58) fixedly connected to the breathing airbag (2); the air inlet passage (51) and the air outlet (52) are both arranged on the shell (58); the regulating component (53) is threadedly connected to the shell (58); and a second sealing ring (62) is arranged between the regulating component (53) and the shell (58).

8. The flow-adjustable compressed oxygen self-rescuer according to claim 7, characterized in that: The adjusting component (53) is provided with a limit abutment portion (532), and the housing (58) is provided with a limit pin (533) for abutting against the limit abutment portion (532) for limiting position.

9. The flow-adjustable compressed oxygen self-rescuer according to any one of claims 1 to 8, characterized in that: The decompression outlet (41) is a constant flow outlet. A hose (7) is connected between the decompression outlet (41) and the air inlet channel (51). The hose (7) is placed in the inner cavity (21). The longitudinal section of the breathing airbag (2) includes a side edge (8). The flow regulating valve (5) is arranged on the side edge (8).

10. The flow-adjustable compressed oxygen self-rescuer according to claim 9, characterized in that: The breathing airbag (2) is provided with an exhaust valve (91) for exhausting the gas in the inner cavity (21); the outer side of the exhaust valve (91) is connected to a human breathing apparatus (93) via a breathing conduit (92); the human breathing apparatus (93) is a breathing mouthpiece or a breathing mask.

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