Compressed oxygen self-rescuer with air bag provided with double air supplementing pressure plates

Abstract

The utility model relates to the technical field of self-rescuers, and discloses a compressed oxygen self-rescuer with an air bag provided with double air supplementing pressure plates, which comprises a body, a compressed oxygen bottle arranged on the body, an air outlet arranged on the compressed oxygen bottle and a switch valve used for controlling the on-off of the air outlet, and a switch pressure reducing valve arranged at the air outlet of the compressed oxygen bottle, the switch pressure reducing valve is connected with an air bag and provided with a constant-flow hole, a large-flow hole and an ejector rod used for controlling on-off of the large-flow hole, and the air bag is provided with an air supplementing pressing plate used for pressing the pushing end. The compressed oxygen self-rescuer with the air bag provided with the double air supplementing pressure plates is simple in structure and low in production cost; through the air supplementing pressure plate, the ejector rod is conveniently and accurately pressed to increase the discharge flow of the compressed oxygen bottle, so that different oxygen inhalation requirements are met, use is flexible, and the operation difficulty is low; and the two air supplementing pressure plates are arranged, when the air supplementing pressure plate on one side loses efficacy, air supplementing can be conducted through the air supplementing pressure plate on the other side, and use is reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of self-rescuers, in particular to a compressed oxygen self-rescuer with an air bag and double air pressure compensation plates. Background Art

[0002] 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 air bag at the constant flow port of the pressure reducer for people to breathe. The compressed oxygen self-rescuer includes an air bag, an oxygen bottle and calcium hydroxide for absorbing carbon dioxide. The calcium hydroxide is generally set in the medicine chamber of the self-rescuer. In related technologies, the user exhales into the air bag through a mouthpiece connected to the air bag, and the exhaled gas will diffuse from the air bag into the calcium hydroxide in the medicine chamber, so that the calcium hydroxide absorbs carbon dioxide in the gas; some existing compressed oxygen self-rescuers have a switch pressure reducing valve at the outlet of the compressed oxygen bottle (such as the utility model switch pressure reducing valve with application number 202321116630.6), and the switch pressure reducing valve is connected to the air bag of the self-rescuer; When the compressed oxygen cylinder is opened and no external force pushes the top rod of the switch pressure reducing valve, a rated flow rate (generally greater than or equal to 2.1L / min) of oxygen is discharged into the airbag through the quantitative hole of the switch pressure reducing valve for human breathing; when the user needs the oxygen cylinder to discharge a larger flow rate (generally greater than or equal to 80L / min) of oxygen for breathing, the large flow rate discharge requirement can be achieved by manually pushing the top rod. At this time, the airbag becomes inflated and the internal oxygen increases to meet the needs of people with large oxygen inhalation needs (such as people with larger body sizes) or human body conditions (such as the increased demand for oxygen inhalation during more intense exercise).

[0003] However, for some existing self-rescuers with the above-mentioned switch pressure reducing valve, when pressing the push rod, it is necessary to press the airbag at the corresponding position more accurately. At this time, since the airbag is prone to wrinkles during use, it is inconvenient to accurately press the correct position of the airbag to push the push rod, and the operation is difficult. In addition, for some existing structures with connectors installed at the quantitative holes, since the switch pressure reducing valve and the oxygen cylinder are connected by (one or more) threads, there will be a certain installation error, resulting in a certain joint of the switch pressure reducing valve being biased to one side after installation, thereby pushing open the airbag on this side, causing the airbag on this side to fail due to interference from the joint, and unable to be pressed smoothly to increase the flow rate, which is inconvenient to use. Utility Model Content

[0004] In order to solve at least one aspect of the above problems, the utility model provides a compressed oxygen self-rescuer with an air bag and a double air pressure plate, comprising: a body, a compressed oxygen cylinder is provided on the body, an air outlet and a switch valve for controlling the on-off of the air outlet are provided on the compressed oxygen cylinder, a switch pressure reducing valve is provided at the air outlet of the compressed oxygen cylinder, the switch pressure reducing valve is connected to the air bag, the switch pressure reducing valve is provided with a constant flow hole, a large flow hole and a push rod for controlling the on-off of the large flow hole, the constant flow hole and the large flow hole are both connected to the air bag, and the push rod is away from the One end of the large flow hole is the pushing end, and the airbag is provided with an air supply pressure plate for pressing the pushing end, and the air supply pressure plate is placed on one side of the pushing end, and the air supply pressure plate is made of soft material; the utility model has an airbag with a compressed oxygen self-rescuer with double air supply pressure plates, which has a simple structure and low production cost; through the air supply pressure plate, it is convenient to accurately press the push rod to increase the flow rate discharged by the compressed oxygen cylinder to meet different oxygen inhalation needs, which is flexible to use and easy to operate; there are two air supply pressure plates, and when the air supply pressure plate on one side fails, air can be replenished through the air supply pressure plate on the other side, which is reliable to use.

[0005] Optionally, two air-compensating pressure plates are provided, and the two air-compensating pressure plates are respectively provided on the airbags on both sides of the pushing end, and the two air-compensating pressure plates are symmetrically distributed.

[0006] Optionally, the air supplement pressure plate is arranged inside the airbag.

[0007] Optionally, the air supply pressure plate is made of soft PVC material.

[0008] Optionally, the air replenishing pressure plate is welded to the airbag.

[0009] Optionally, the air-compensating pressure plate is square, and is provided with an annular welding portion for welding to the airbag.

[0010] Optionally, the thickness of the air-compensating pressure plate is greater than the thickness of the airbag.

[0011] Optionally, a connector is provided at the constant flow hole, a flow regulating valve is provided on the airbag, a catheter is connected between the flow regulating valve and the connector, and the flow regulating valve is used to adjust the flow rate discharged from the constant flow hole to the inner cavity of the airbag.

[0012] Optionally, the flow regulating valve includes a valve body and a regulating valve core screwed to the valve body, the valve body is fixedly arranged on the airbag, the valve body is provided with an inlet, an outlet and a channel connecting the inlet and the outlet, the inlet is connected to one end of the catheter, the outlet is connected to the inner cavity of the airbag, and the regulating valve core is provided with a sealing plug for controlling the size of the channel opening.

[0013] Optionally, a medicine chamber is provided on the main body, and a medicine for absorbing carbon dioxide is provided in the medicine chamber. The medicine chamber is provided with a first interface and a second interface that are connected to the inner cavity of the medicine chamber. The first interface is connected to the airbag, and the second interface is connected to a breathing apparatus for human breathing.

[0014] Compared with the prior art, the utility model discloses a compressed oxygen self-rescuer with an air bag and double air-replenishing pressure plates, which has a simple structure and low production cost. Through the air-replenishing pressure plates, it is convenient to accurately press the push rod to increase the discharge flow of the compressed oxygen cylinder to meet different oxygen inhalation needs. It is flexible to use and has low operation difficulty. There are two air-replenishing pressure plates. When the air-replenishing pressure plate on one side fails, air can be replenished through the air-replenishing pressure plate on the other side, which is reliable to use. When in use, the air-replenishing pressure plate is pressed inward by hand to push the push rod to open the large flow hole. The addition of the air-replenishing pressure plate makes the pressing part of the air bag air-replenishing thicker, thereby making it less likely to wrinkle, and the air-replenishing pressure plate can be used to replenish the air. The air pressure plate can help users know the pressing part and facilitate blind operation; the air supply pressure plate is made of soft PVC material, which has the advantages of good chemical stability, good wear resistance and good toughness; the air supply pressure plate is provided with an annular welding part for welding with the airbag. After welding, the structure is stable and not easy to detach, and the annular welding part will show an obvious welding circle on the outside of the airbag after welding, so that the user can observe the position of the pressing part and reduce the difficulty of operation; the channel opening is adjusted by manually rotating the adjustment valve core, so that the user can fine-tune the oxygen flow discharged from the quantitative hole according to the oxygen inhalation needs, so as to extend the use time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of the utility model of a compressed oxygen self-rescuer with an air bag and double air pressure plates;

[0016] Figure 2 This is a structural diagram of the switch pressure reducing valve portion of the compressed oxygen self-rescuer with an air bag and double air pressure plates of the utility model;

[0017] Figure 3 This is a cross-sectional view of the utility model of a compressed oxygen self-rescuer with an air bag and double air pressure plates;

[0018] Figure 4 for Figure 3 Enlarged view of part A in the middle;

[0019] Figure 5 This is a structural diagram of the flow regulating valve portion of the compressed oxygen self-rescuer with an air bag and double air pressure plates according to the present invention;

[0020] Figure 6 for Figure 5 Enlarged view of middle part B;

[0021] Figure 7 for Figure 5 Enlarged view of the middle C section;

[0022] The names of the components corresponding to the various figure marks in the figure are: 1 is the main body, 2 is the compressed oxygen cylinder, 201 is the switch valve, 3 is the switch pressure reducing valve, 301 is the constant flow hole, 3011 is the joint, 302 is the large flow hole, 303 is the push rod, 3031 is the push end, 4 is the air bag, 5 is the air replenishment pressure plate, 501 is the annular welding part, 6 is the flow regulating valve, 61 is the valve body, 611 is the inlet, 612 is the outlet, 613 is the channel, 62 is the regulating valve core, 621 is the sealing plug, 622 is the regulating knob, 7 is the medicine chamber, 71 is the first interface, 72 is the second interface, 73 is the breathing apparatus, 8 is the catheter, and 9 is the adapter. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0024] 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 based on the positions or location relationships during normal use of the product.

[0025] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0026] See Figure 1-Figure 7The embodiment of the utility model provides an airbag with a double air-replenishing pressure plate. It includes: a main body 1, a compressed oxygen cylinder 2 is provided on the main body 1, an air outlet and a switch valve 201 for controlling the on and off of the air outlet are provided on the compressed oxygen cylinder 2, a switch pressure reducing valve 3 is provided at the air outlet of the compressed oxygen cylinder 2, the switch pressure reducing valve 3 is connected to the airbag 4, the switch pressure reducing valve 3 is provided with a constant flow hole 301, a large flow hole 302 and a push rod 303 for controlling the on and off of the large flow hole 302. After pushing the push rod 303, the oxygen flow discharged from the large flow hole 302 is greater than the rated flow of the constant flow hole 301, thereby realizing the function of manually replenishing air in the airbag, which is flexible to use; the constant flow hole 301 and the large flow hole 302 are both connected to the airbag 4, and the end of the push rod 303 away from the large flow hole 302 is a pushing end 3031, and an air-replenishing pressure plate 5 for pressing the pushing end 3031 is provided on the airbag 4. When the user presses the airbag 4 with the help of the air-supplying plate 5, the pressure on the airbag 4 is increased, and the pressure on the airbag 4 is increased, so that the pressure on the airbag 4 is not easy to be wrinkled, and the air-supplying plate 5 can be easily known by the user. The user can easily feel the pressure on the airbag 4 by touching the airbag 4, and the pressure on the airbag 4 is increased, so that the pressure on the airbag 4 is increased ...

[0027] See Figures 1-6, there are two air-filling pressure plates 5, which are respectively arranged on the airbags 4 on both sides of the pushing end 3031. The two air-filling pressure plates 5 are symmetrically distributed, and the pushing end 3031 is provided with a ball that is easy to push. You can choose to press one air-filling pressure plate 5 to fill air according to actual conditions, which is flexible to use; the air-filling pressure plate 5 is arranged on the inside of the airbag 4 to maintain the flatness of the outside; the air-filling pressure plate 5 is made of soft PVC material, which has low production cost and has the advantages of good chemical stability, good wear resistance, good toughness, etc.; the air-filling pressure plate 5 is welded to the airbag 4 The airbag 4 is made of a material that is easy to weld with the air-filling pressure plate 5. In this embodiment, the airbag 4 is also made of soft PVC material, which is convenient for welding and reduces production costs. Compared with sewing and other methods, welding is less likely to cause gas leakage and is reliable to use. The air-filling pressure plate 5 is square, and an annular welding part 501 for welding with the airbag 4 is provided on the air-filling pressure plate 5. After welding, the structure is stable and not easy to detach. After welding, the annular welding part 501 will show an obvious welding circle on the outside of the airbag 4, so that the user can observe the position of the pressing part and reduce the difficulty of operation.

[0028] See Figure 1-Figure 4 The thickness of the air-inflating pressure plate 5 is greater than that of the airbag 4. The air-inflating pressure plate 5 can increase the thickness of the pressing part of the airbag 4 in disguise, so that the pressing part is not prone to wrinkles, so as to ensure smooth pressing. A joint 3011 is provided at the constant flow hole 301, and a flow regulating valve 6 is provided on the airbag 4. A conduit 8 is connected between the flow regulating valve 6 and the joint 3011. The flow regulating valve 6 is used to adjust the flow rate discharged from the constant flow hole 301 to the inner cavity of the airbag 4; one end of the adapter 9 is screwed on the compressed oxygen cylinder, and the flow regulating valve 6 is screwed to the other end of the adapter 9. Due to the two-thread connection, the direction of the joint 3011 of the flow regulating valve 6 installed last is offset, that is, it is not facing upward or downward. At this time, when the airbag on one side is opened, the air-inflating pressure plate on this side may not be able to press the push rod to cause failure. At this time, it is necessary to press the air-inflating pressure plate of the airbag on the other side to inflate air. Two air-inflating pressure plates are provided, which are reliable and safe to use.

[0029] See Figure 2-Figure 7The flow regulating valve 6 includes a valve body 61 and a regulating valve core 62 screwed on the valve body 61, and one end of the regulating valve core 62 is provided with an regulating knob 622 exposed to the airbag; the valve body 61 is fixedly arranged on the airbag 4, and the valve body 61 is provided with an inlet 611, an outlet 612 and a channel 613 connected between the inlet 611 and the outlet 612. The inlet 611 is connected to one end of the catheter 8, and the outlet 612 is connected to the inner cavity of the airbag 4. A sealing plug 621 for controlling the opening size of the channel 613 is provided on the regulating valve core 62; the sealing plug 621 is driven to move by manually rotating the regulating valve core 62, thereby adjusting the opening size of the channel 613, so that the user can fine-tune the oxygen flow discharged from the quantitative hole according to the oxygen inhalation demand. For example, the flow of the quantitative hole can be reduced or closed in a safe place or when resting, so as to reduce the oxygen consumption of the compressed oxygen cylinder, extend the use time, and be flexible in use.

[0030] See Figure 1-Figure 3 The main body 1 is provided with a medicine bin 7, in which a medicine for absorbing carbon dioxide is provided. In this embodiment, the medicine is a short columnar calcium hydroxide solid. The medicine bin 7 is provided with a first interface 71 and a second interface 72 which are connected to the inner cavity of the medicine bin 7. The first interface 71 is connected to the airbag 4, and the second interface 72 is connected to a breathing apparatus 73 for human breathing. The breathing apparatus 73 is a breathing mouthpiece or a breathing mask.

[0031] The utility model discloses a compressed oxygen self-rescuer with an air bag and double air-replenishing pressure plates, which has a simple structure and low production cost. The air-replenishing pressure plates can be used to accurately press the push rod to increase the discharge flow of the compressed oxygen cylinder to meet different oxygen inhalation needs. The utility model is flexible to use and has low operation difficulty. There are two air-replenishing pressure plates. When the air-replenishing pressure plate on one side fails, the air can be replenished through the air-replenishing pressure plate on the other side, which is reliable to use. When in use, the air-replenishing pressure plate is pressed inward by hand to push the push rod to open the large flow hole. The addition of the air-replenishing pressure plate thickens the pressing part of the air bag for air replenishment, thereby making it less likely to wrinkle. The air-replenishing pressure plate can It is easy for users to know the pressing part and facilitate blind operation; the air-supply pressure plate is made of soft PVC material, which has the advantages of good chemical stability, good wear resistance, and good toughness; the air-supply pressure plate is provided with an annular welding part for welding with the airbag. After welding, the structure is stable and not easy to separate, and the annular welding part will show an obvious welding circle on the outside of the airbag after welding, so that the user can observe the position of the pressing part and reduce the difficulty of operation; the channel opening is adjusted by manually rotating the adjustment valve core, so that the user can fine-tune the oxygen flow discharged from the quantitative hole according to the oxygen inhalation demand, so as to extend the use time.

[0032] 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 principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A compressed oxygen self-rescuer with an airbag and double air pressure plates, characterized in that: include: A main body (1) is provided with a compressed oxygen cylinder (2), the compressed oxygen cylinder (2) is provided with an air outlet and a switch valve (201) for controlling the opening and closing of the air outlet, a switch pressure reducing valve (3) is provided at the air outlet of the compressed oxygen cylinder (2), the switch pressure reducing valve (3) is connected to an air bag (4), the switch pressure reducing valve (3) is provided with a constant flow hole (301), a large flow hole (302) and a valve for controlling the opening and closing of the large flow hole (302). ) is connected and disconnected by a push rod (303), the constant flow hole (301) and the large flow hole (302) are both connected to the air bag (4), the end of the push rod (303) away from the large flow hole (302) is a pushing end (3031), and the air bag (4) is provided with an air supply pressure plate (5) for pressing the pushing end (3031), and the air supply pressure plate (5) is placed on one side of the pushing end (3031), and the air supply pressure plate (5) is made of soft material.

2. The compressed oxygen self-rescuer with airbag and double air pressure plates as claimed in claim 1, characterized in that: There are two air-compensating pressure plates (5), which are respectively arranged on the airbag (4) on both sides of the pushing end (3031), and the two air-compensating pressure plates (5) are symmetrically distributed.

3. The compressed oxygen self-rescuer with airbag and double air pressure plates as claimed in claim 1, characterized in that: The air-compensating pressure plate (5) is arranged inside the air bag (4).

4. The compressed oxygen self-rescuer with airbag and double air pressure plates as claimed in claim 1, characterized in that: The air-compensating pressure plate (5) is made of soft PVC material.

5. The compressed oxygen self-rescuer with airbag and double air pressure plates as claimed in claim 1, characterized in that: The air-compensating pressure plate (5) is welded to the air bag (4).

6. The compressed oxygen self-rescuer with airbag and double air pressure plates as claimed in claim 5, characterized in that: The air-compensating pressure plate (5) is square in shape, and is provided with an annular welding portion (501) for welding to the airbag (4).

7. The compressed oxygen self-rescuer with airbag and double air pressure plates as claimed in claim 1, characterized in that: The thickness of the air-compensating pressure plate (5) is greater than the thickness of the airbag (4).

8. The compressed oxygen self-rescuer with airbag and double air pressure plates as claimed in claim 1, characterized in that: A joint (3011) is provided at the constant flow hole (301), a flow regulating valve (6) is provided on the airbag (4), a conduit (8) is connected between the flow regulating valve (6) and the joint (3011), and the flow regulating valve (6) is used to adjust the flow rate discharged from the constant flow hole (301) to the inner cavity of the airbag (4).

9. The compressed oxygen self-rescuer with airbag and double air pressure plates as claimed in claim 8, characterized in that: The flow regulating valve (6) comprises a valve body (61) and a regulating valve core (62) screwed onto the valve body (61); the valve body (61) is fixedly mounted on the airbag (4); an inlet (611), an outlet (612), and a channel (613) communicating between the inlet (611) and the outlet (612); the inlet (611) is connected to one end of the conduit (8); the outlet (612) is communicated with the inner cavity of the airbag (4); and a sealing plug (621) for controlling the opening size of the channel (613) is provided on the regulating valve core (62).

10. The compressed oxygen self-rescuer with an airbag and double air pressure plates according to any one of claims 1 to 9, characterized in that: The body (1) is provided with a medicine chamber (7), wherein a medicine for absorbing carbon dioxide is provided in the medicine chamber (7), and the medicine chamber (7) is provided with a first interface (71) and a second interface (72) which are in communication with the inner cavity of the medicine chamber (7), wherein the first interface (71) is in communication with the air bag (4), and the second interface (72) is connected to a breathing apparatus (73) for human breathing.

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