Portable multipurpose oxygen self-supply device

Abstract

The utility model relates to the technical field of emergency protection, in particular to a portable multipurpose oxygen self-supply device which comprises a shell, the shell is detachably connected with a cover body, the interior of the shell is divided into an oxygen generation cavity and an oxygen storage cavity through a partition plate, an oxygen generation agent bag and water are arranged in the oxygen generation cavity in advance, the oxygen generation agent bag is fixedly connected into a starting device, and the starting device is connected with the cover body. A filtering diaphragm is arranged in the oxygen generation cavity, the filtering diaphragm and the inner wall of the shell are encircled to form a filtering cavity, and the filtering cavity is communicated with the oxygen storage cavity through an oxygen conveying pipe. The automobile seat cushion is simple in structure, low in manufacturing cost and small in size, can be placed below an automobile seat and the like, and improves the space utilization rate; and the problems of backward flowing of the oxygen generating agent, influence on continuous oxygen supply and the like caused by the influence of the posture of the device during use are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to emergency protection technical field especially, and it relates to a portable multipurpose self oxygen supply device. BACKGROUND

[0002] The portable oxygen equipment is used for the scene such as car falling into water, shipwreck, toxic gas place and fire, and can provide emergency oxygen supply. At present, oxygen cylinder (tank), oxygen bag and the like are prohibited to be carried on the vehicle, ship or airplane and the like traffic tool in the market because they belong to the range of flammable and explosive, and the existing emergency oxygen equipment is driven by electricity, and the volume of the equipment itself is relatively large and heavy.

[0003] For example, the utility model with the announcement number CN 221535484 U discloses an automobile escape emergency oxygen device in water, and specifically relates to the emergency protection technical field. An automobile escape emergency oxygen device in water, including oxygen generator body, oxygen generator body rear portion and upper cover rotation connection, oxygen generator body inside is provided with left and right two cavities, one cavity is provided with oxygen storage tank, oxygen storage tank is connected with underwater oxygen mask through connecting pipe, and the other cavity is provided with reaction bag for oxygen production, and the reaction bag stores the oxygen production agent composed of sodium percarbonate and manganese dioxide mixture. The above-mentioned utility model discloses an oxygen production equipment without electric drive, which can provide oxygen for the user in the scene such as car falling into water, and improve the escape probability, but the escape scene is usually urgent, and the user is not easy to maintain the posture of the oxygen production device in the underwater scene, and problems such as backflow of oxygen production agent from the oxygen pipe are prone to occur, which affects the oxygen supply of the device. UTILITY MODEL CONTENTS

[0004] In view of the problems in the prior art, the utility model provides a portable multipurpose self oxygen supply device which can be affected by the posture of the device, avoid backflow of oxygen production agent and not affect continuous oxygen supply.

[0005] To achieve the above technical effects, the utility model provides:

[0006] A portable multipurpose self oxygen supply device, including the casing, the casing is detachably connected with the cover, the casing is formed with oxygen production cavity and oxygen storage cavity through the partition plate, the oxygen production cavity is preinstalled with oxygen production agent bag and water, the oxygen production agent bag is fixedly connected in the starting device, the oxygen production cavity is provided with filter diaphragm, the filter diaphragm and the inner wall of the casing surround to form filter cavity, and the filter cavity is communicated with the oxygen storage cavity through the oxygen delivery pipe.

[0007] The utility model discloses a oxygen -making cavity is added pure water or drinking water, and through starting device, the oxygen -making agent (for example adopts sodium percarbonate and water reaction and makes oxygen, utilizes manganese dioxide catalysis, also can adopt other and water contact and make oxygen reaction material and make) in oxygen -making gas bag is leaked, and the oxygen -making agent reacts with water and makes oxygen, and the oxygen is filtered out through filter diaphragm and enters the filter cavity, and through oxygen delivery pipe, enters the oxygen storage cavity for the user.

[0008] The starting device includes a clamping assembly having a cross-shaped clamping groove, the cross-shaped clamping groove horizontally clamps an opening blade, the cross-shaped clamping groove vertically clamps the oxygen-making agent bag, and the opening blade is located at one side of the oxygen-making agent bag away from the end of the cross-shaped clamping groove. The cross-shaped clamping groove has a certain pre-tightening force, which can be provided by the material performance of the clamping assembly itself or a spring and the like. The opening blade is used to cut open the oxygen-making agent bag, so that the oxygen-making agent enters the oxygen-making cavity to react with water to make oxygen.

[0009] The oxygen storage cavity has a gas outlet, the gas outlet is detachably connected with a starting cap, the opening blade is connected with a starting pull rope, and the starting pull rope passes through the partition plate and is connected with the starting cap. The user uses the starting cap and the starting pull rope to drive the opening blade to cut open the oxygen-making agent bag, which is simple and convenient to operate.

[0010] The starting pull rope is provided with a plurality of sub-pull ropes, and the sub-pull ropes are connected with the oxygen-making agent bag and the opening blade respectively. Each sub-pull rope is connected with the opening blade and the tail of the oxygen-making agent bag, and the length of the sub-pull rope connected with the oxygen-making agent bag is greater than the length of the sub-pull rope connected with the opening blade. The purpose is to ensure that the opening blade cuts open the oxygen-making agent bag first, and then the oxygen-making agent bag slides out of the cross-shaped clamping groove to leak the oxygen-making agent therein.

[0011] The filter diaphragm includes a filter screen and a gas permeable membrane, the filter screen is arranged in close contact with the gas permeable membrane, the gas permeable membrane is close to the inner wall of the shell, and the filter screen is away from the inner wall of the shell.

[0012] The gas permeable membrane is an ePTFE membrane. The gas permeable membrane can be an ePTFE membrane or other materials that can achieve the effect of hydrophobic and air permeable.

[0013] The oxygen delivery pipe is arranged on the outer side of the shell, one end of the oxygen delivery pipe passes through the shell to communicate with the filter cavity, and the other end of the oxygen delivery pipe passes through the shell to communicate with the oxygen storage cavity.

[0014] The oxygen delivery pipe is arranged in the shell, one end of the oxygen delivery pipe passes through the filter membrane to communicate with the filter cavity, and the other end of the oxygen delivery pipe passes through the partition plate to communicate with the oxygen storage cavity.

[0015] The cover body is additionally provided with a water inlet, and the water inlet is detachably connected with a water blocking cap.

[0016] The oxygen delivery pipe is provided with a plurality of waterproof bends.

[0017] The portable multipurpose self-oxygen supply device has the advantages of simple structure, low manufacturing cost, small size, and high space utilization rate.

[0018] The portable multipurpose self-oxygen supply device has the advantages of simple structure, low manufacturing cost, small size, and high space utilization rate. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole structure schematic view of the portable multipurpose self-oxygen supply device.

[0020] Figure 2 It is a structure schematic view of the oxygen delivery pipe external mode.

[0021] Figure 3 It is a top view of the internal structure of the oxygen delivery pipe external mode.

[0022] Figure 4 It is a structure schematic view of the oxygen delivery pipe internal mode.

[0023] Figure 5 It is a top view of the internal structure of the oxygen delivery pipe internal mode.

[0024] Figure 6 It is a structure schematic view of the oxygen delivery pipe inlet end.

[0025] Figure 7 It is a structure schematic view of the filter diaphragm double-layer arrangement.

[0026] Figure 8 It is a structure schematic view of the filter diaphragm three-layer arrangement.

[0027] Figure 9 It is a structure schematic view of the combination of the oxygen delivery pipe external mode and the internal mode.

[0028] Figure 10 It is a top view and a bottom view of the internal structure of the combination of the oxygen delivery pipe external mode and the internal mode.

[0029] REFERENCE NUMERALS:

[0030] 1, shell; 2, cover; 3, oxygen generator package; 4, starting device; 5, filter diaphragm; 6, oxygen delivery pipe;

[0031] 11, oxygen generation cavity; 12, oxygen storage cavity; 13, filter cavity; 14, gas outlet; 15, starting cap; 16, starting pull rope; 17, pull rope; 21, water inlet; 22, water blocking cap; 41, clamping assembly; 42, cross clamping groove; 43, opening blade; 51, filter screen; 52, air permeable membrane; 61, waterproof bend. DETAILED DESCRIPTION

[0032] The following specific embodiments illustrate the embodiments of the present application, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification.

[0033] The present application provides a portable multipurpose self-oxygen supply device, and the following describes preferred embodiments of the portable multipurpose self-oxygen supply device.

[0034] Embodiment one

[0035] Reference to the accompanying drawings Figure 1 And 4 In this embodiment, the shell 1 is in the shape of a flat rectangular parallelepiped, the shell 1 is detachably connected with the cover 2 through threads, and the shell 1 and the cover 2 are both made of polyvinyl chloride; the interior of the shell 1 is divided into an oxygen production cavity 11 and an oxygen storage cavity 12 by a partition plate, the oxygen production cavity 11 is a reaction place for generating oxygen in the self-oxygen supply device in this embodiment, pure water or drinking water is poured into the oxygen production cavity 11, and the oxygen storage cavity 12 is used for concentrating the oxygen generated by the reaction of the oxygen production cavity 11; a water inlet 21 is formed at the top of the cover 2, the water inlet 21 is screwed with a silica gel water blocking cap 22, and the water inlet 21 and the water blocking cap 22 can facilitate the addition and pouring of water in the interior of the shell 1.

[0036] Reference to the accompanying drawings Figure 7 A filter diaphragm 5 is arranged at each of the four corners of the oxygen production cavity 11, the filter diaphragm 5, the inner wall of the shell 1, the bottom surface of the shell 1 and the end surface of the cover 2 form a filter cavity 13, the filter diaphragm 5 is responsible for filtering out the oxygen generated by the reaction of the oxygen production cavity 11, and the oxygen is collected in the filter cavity 13; in this embodiment, the filter diaphragm 5 includes two layers, including a filter screen 51 and a gas permeable membrane 52, the filter screen 51 first filters out large particles of impurities in the water in the oxygen production cavity 11, and the gas permeable screen filters out the oxygen in the oxygen production cavity 11 and isolates liquids and other impurities; in order to improve the gas permeability, the gas permeable membrane 52 in this embodiment is made of an ePTFE membrane, and the filter screen 51 is made of stainless steel; the filter screen 51 and the gas permeable membrane 52 are attached to form a complete structure, and the filter screen 51 improves the stability of the gas permeable membrane 52.

[0037] The four filter cavities 13 in this embodiment are all connected with the oxygen storage cavity 12 through oxygen delivery pipes 6, and when oxygen is generated by the reaction in the oxygen production cavity 11, the oxygen is continuously filtered out in the filter cavities 13 and enters the oxygen storage cavity 12 through the oxygen delivery pipes 6; the oxygen storage cavity 12 is provided with an air outlet 14, the air outlet 14 sends out the oxygen, and the operator can use the oxygen; according to this embodiment, the air outlet 14 is externally connected with an oxygen mask through threads.

[0038] The starting device 4 is arranged in the oxygen production chamber 11, and the starting device 4 comprises a clamping assembly 41 which is in the shape of a rectangular rod-shaped cuboid. A cross-shaped clamping groove 42 is formed in the cross section of one end of the clamping assembly 41, and the cross-shaped clamping groove 42 extends to the other end along the length direction of the clamping assembly 41 and exceeds half of the length direction of the clamping assembly 41. An opening blade 43 is clamped in the horizontal part of the cross-shaped clamping groove 42, and the cross-shaped clamping groove 42 has a certain pre-tightening force, so that the opening blade 43 is fixed at the bottom of the cross-shaped clamping groove 42. The oxygen production agent bag 3 is clamped in the vertical part of the cross-shaped clamping groove 42. The oxygen production agent bag 3 comprises two bags which are filled with sodium percarbonate and manganese dioxide respectively and are sealed. The oxygen production agent bag 3 is pre-pressed into the cross-shaped clamping groove 42, and the pre-pressed line is arranged at the intersection of the vertical and horizontal parts of the cross-shaped clamping groove 42. The pre-pressed line facilitates the opening blade 43 to cut the oxygen production agent bag 3. The oxygen production agent bag 3 is arranged close to the opening blade 43, and the blade of the opening blade 43 faces the oxygen production agent bag 3.

[0039] Further, a starting cap 15 is screwed on the gas outlet 14. An inside surface of the starting cap 15 is fixedly connected with a starting pull rope 16. The other end of the starting pull rope 16 penetrates through the partition plate and is divided into four sub-pull ropes 17. The sub-pull ropes 17 are respectively connected with the two ends of the opening blade 43 and the two oxygen production agent bags 3. The lengths of the sub-pull ropes 17 connected with the two ends of the opening blade 43 are equal. The lengths of the sub-pull ropes 17 connected with the two oxygen production agent bags 3 are equal. The length of the sub-pull rope 17 connected with the opening blade 43 is smaller than the length of the sub-pull rope 17 connected with the oxygen production agent bag 3.

[0040] Taking the scenario of a car falling into water as an example, the use process of the portable multipurpose self-supply oxygen device in the embodiment is as follows: the user unscrews the starting cap 15 and pulls the starting cap 15, so that the starting pull rope 16 drives the opening blade 43 to move along the cross-shaped clamping groove 42. The blade part cuts the two oxygen production agent bags 3 along the pre-pressed line of the oxygen production agent bag 3, and releases sodium percarbonate and manganese dioxide. The sodium percarbonate and manganese dioxide react in water to produce oxygen. The oxygen is filtered out through the filter diaphragm 5 into the filter chamber 13, and then is sent into the oxygen storage chamber 12 through the oxygen delivery pipe 6, and is supplied to the user through the gas outlet 14.

[0041] In the example, the oxygen production chamber 11 can be filled with pure water, and in special cases, can be filled with drinking water. According to the service life of the oxygen production agent bag 3, the oxygen production agent bag 3 can be replaced by disassembling the cover 2. In an emergency, the water source in the oxygen production chamber 11 can be used as drinking water, so that the device has multiple purposes. The self-supply oxygen device in the embodiment has a small size, and is convenient to carry and place, for example, placed in the space below the car seat.

[0042] Embodiment Two

[0043] Reference is made to the accompanying drawings Figure 2 and 3The portable multipurpose self-oxygen supply device in the embodiment comprises a shell 1, a cover 2 detachably connected with the shell 1, and a separation plate inside the shell 1 forming an oxygen production cavity 11 and an oxygen storage cavity 12. Pure water or drinking water is injected into the oxygen production cavity 11 as an oxygen production site, and the oxygen storage cavity 12 is responsible for collecting and sending out oxygen for the user to use. The cover 2 is provided with a water inlet 21, and the water inlet 21 is detachably connected with a water blocking cap 22. The user can inject water into the oxygen production cavity 11 through the water inlet 21, or take out water for drinking in an emergency.

[0044] Reference is made to the accompanying drawings Figure 8 The filter diaphragm 5 in the embodiment is still arranged at four positions, i.e., four corners of the shell 1. The filter diaphragm 5 and the inner wall of the shell 1 and the end face of the cover 2 surround a filter cavity 13. Oxygen in the oxygen production cavity 11 enters the filter cavity 13 through the filter diaphragm 5. The filter diaphragm 5 comprises a filter screen 51 and a gas permeable membrane 52. In the embodiment, the filter diaphragm 5 is arranged in three layers, i.e., the filter screen 51, the gas permeable membrane 52, and the filter screen 51. The filter screen 51 is arranged as a nylon filter screen 51 for filtering large particles in the oxygen production cavity 11. The gas permeable membrane 52 is an ePTFE membrane for isolating liquid and filtering out oxygen. The gas permeable membrane 52 is fixed by two layers of nylon filter screens 51 to make the gas permeable membrane 52 more stable.

[0045] Reference is made to the accompanying drawings Figure 2 And 3 The oxygen production cavity 11 is provided with two oxygen production agent bags 3 containing sodium percarbonate and manganese dioxide respectively and sealed. The two oxygen production agent bags 3 are fixedly connected in a starting device 4. The starting device 4 comprises a clamping assembly 41 having a cross-shaped clamping groove 42. The horizontal part of the cross-shaped clamping groove 42 is clamped with an open blade 43, and the vertical part of the cross-shaped clamping groove 42 is clamped with the oxygen production agent bag 3. The open blade 43 is located on the side of the oxygen production agent bag 3 away from the end of the cross-shaped clamping groove 42. The part of the oxygen production agent bag 3 connected with the cross-shaped clamping groove 42 is provided with a pre-pressed inward dotted line, which can easily separate the oxygen production agent bag 3 from the open blade 43. In the embodiment, the two oxygen production agent bags 3 are arranged side by side along the length direction of the clamping assembly 41. This arrangement can increase the content of the agent in the oxygen production agent bag 3 and fully utilize the space of the oxygen production cavity 11. The oxygen storage cavity 12 is provided with an air outlet 14. The air outlet 14 is detachably connected with a starting cap 15. The open blade 43 is connected with a starting pull rope 16. The starting pull rope 16 passes through the separation plate and is connected with the starting cap 15. The starting pull rope 16 is provided with a plurality of sub-pull ropes 17. The sub-pull ropes 17 are respectively connected with the oxygen production agent bags 3 and the open blade 43.

[0046] Reference is made to the accompanying drawings Figure 2 And 3 The filter cavity 13 is communicated with the oxygen storage cavity 12 through an oxygen delivery pipe 6. The oxygen delivery pipe 6 is arranged on the outer side of the shell 1. One end of the oxygen delivery pipe 6 passes through the shell 1 to connect the filter cavity 13, and the other end passes through the shell 1 to connect the oxygen storage cavity 12.Figure 6 The inlet end of the oxygen delivery pipe 6 is provided with a waterproof bend 61, and the inlet of the oxygen delivery pipe 6 is in a "T" shape, that is, the oxygen in the filtering cavity 13 enters the oxygen delivery pipe 6 through two inlets, thereby improving the rate of oxygen entering the oxygen delivery pipe 6; after the oxygen delivery pipe 6 passes through the shell 1, it is fixed on the side of the shell 1 and extends to the outer side of the oxygen storage cavity 12, and then passes through the shell 1 to communicate with the oxygen storage cavity 12; the part of the oxygen delivery pipe 6 located outside the shell 1 can be provided with multiple "S" shaped waterproof bends 61 to further prevent the penetration of water into the oxygen storage cavity 12.

[0047] The portable multipurpose self-supply oxygen device in the embodiment can play a role in heat dissipation for the oxygen generated in the oxygen production process; as an improvement of the embodiment, the oxygen delivery pipe 6 located outside the shell 1 is provided with multiple "S" shaped waterproof bends 61 to further prevent the penetration of water into the oxygen delivery pipe 6 and affect the use.

[0048] Embodiment Three

[0049] Referring to Figs. 1, 2 and 3, Figure 4 and 5 The portable multipurpose self-supply oxygen device in the embodiment is different from the one described in Embodiment Two in that: two oxygen production agent packages 3 are arranged side by side and clamped on the left and right sides of the clamping assembly 41; the filtering diaphragm 5 is arranged in a double-layer structure; and the oxygen delivery pipe 6 is arranged inside the oxygen production cavity 11.

[0050] Continuing to refer to Figs. 1, 2 and 3, Figure 4 and 5 In the embodiment, the oxygen production agent packages 3 containing sodium percarbonate and manganese dioxide respectively are clamped on the two sides of the clamping assembly 41 to ensure that the opening blade 43 can simultaneously cut the two oxygen production agent packages 3; referring to Fig. 4, Figure 7 The filtering diaphragm 5 adopts a filtering screen 51 and a breathable film 52, the filtering screen 51 is made of stainless steel and is used to filter large-particle impurities in the oxygen production cavity 11, and the breathable film 52 is made of an ePTFE film to ensure the water-proof and breathable effect and filter out the oxygen generated in the oxygen production cavity 11; the oxygen delivery pipe 6 is arranged inside the shell 1, one end of the oxygen delivery pipe 6 passes through the filtering film to communicate with the filtering cavity 13, and the other end passes through the partition plate to communicate with the oxygen storage cavity 12; referring to Fig. 5, Figure 6 the inlet of the oxygen delivery pipe 6 is still arranged in a "T" shape, that is, it has two oxygen inlets to ensure the efficiency of oxygen entering the oxygen delivery pipe 6, and a waterproof bend 61 is arranged at the inlet of the oxygen delivery pipe 6; the oxygen delivery pipe 6 passes through the filtering diaphragm 5 into the oxygen production cavity 11 and is arranged on the bottom surface of the oxygen production cavity 11 to extend to the partition plate, and after passing through the partition plate, it communicates with the oxygen storage cavity 12; the two filtering cavities 13 located on one side of the partition plate directly pass through the partition plate to communicate with the oxygen storage cavity 12; as a further improvement of the embodiment, a one-way valve can be arranged at the end of each oxygen delivery pipe 6 passing through the partition plate to prevent the backflow of oxygen.

[0051] The portable multipurpose self-oxygen supply device in the embodiment has the oxygen delivery pipe 6 built in the oxygen production cavity 11, which improves the compactness of the device as a whole.

[0052] Embodiment Four

[0053] Referring to the accompanying drawings Figure 9 and 10 , the embodiment combines the built-in and external arrangement of the oxygen delivery pipe 6 in the foregoing embodiments, and sets the two filter cavities 13 away from the oxygen storage cavity 12 as the external arrangement of the oxygen delivery pipe 6 and arranged on the side and bottom surface of the shell 1, and each oxygen delivery pipe 6 is provided with two waterproof bends 61 to further block the permeated water; the two filter cavities 13 close to the oxygen storage cavity 12 are set as the built-in arrangement and arranged on the bottom and side surface of the oxygen production cavity 11, and each oxygen delivery pipe 6 is provided with one waterproof bend 61. The combination of the built-in and external arrangement of the oxygen delivery pipe 6 takes into account the heat dissipation and the compactness of the device, and the multiple waterproof bends 61 block the permeated water.

[0054] The portable multipurpose self-oxygen supply device provided by the utility model has smaller volume and lower manufacturing cost than the portable oxygen production equipment in the prior art, can be placed in a position such as under a car seat, and improves the utilization rate of the car space; the water source in the oxygen production cavity can be taken out for use in an emergency, which increases the use flexibility of the device; in use, the portable multipurpose self-oxygen supply device in the utility model can continuously filter the oxygen in the oxygen production cavity 11 without being affected by the placement posture of the device, avoids problems such as backflow of the oxygen production caused by the change of the placement posture of the device by the fallen person during escape, and causes the device to stop supplying oxygen or even cause danger; two arrangement modes of the oxygen delivery pipe 6 are given in the foregoing embodiments, the external arrangement of the embodiment two tends to improve the heat dissipation performance, and the built-in arrangement of the embodiment three tends to improve the compactness of the device as a whole and is more beautiful.

[0055] The above is the preferred embodiment of the utility model, which is used to illustrate the utility model and the effects generated, and it should be pointed out that for ordinary skilled persons in the technical field, the expected improvement and modification can be made without departing from the principle of the utility model, and the improvement and modification are also within the protection scope of the utility model.

Claims

1. A portable multi-purpose self-contained oxygen supply device, characterized in that, The application relates to an oxygen generator comprising a shell, a detachable cover, an oxygen production cavity and an oxygen storage cavity formed by a partition plate inside the shell, an oxygen production agent bag and water pre-fixed in the oxygen production cavity, a filter diaphragm arranged in the oxygen production cavity, a filter cavity formed by the filter diaphragm and the inner wall of the shell, and an oxygen delivery pipe for connecting the filter cavity and the oxygen storage cavity.

2. The portable multi-purpose self-contained oxygen supply device of claim 1, wherein, The starting device comprises a clamping assembly with a cross-shaped clamping groove, wherein the horizontal part of the cross-shaped clamping groove is provided with an opening blade, and the vertical part of the cross-shaped clamping groove is provided with the oxygen production agent bag; and the opening blade is arranged on one side of the oxygen production agent bag away from the end of the cross-shaped clamping groove.

3. The portable multi-purpose self-contained oxygen supply device of claim 2, wherein, The oxygen storage cavity is provided with an air outlet, and the opening blade is connected with a starting pull rope which passes through the partition plate and is connected with a starting cap.

4. The portable multi-purpose self-contained oxygen supply device of claim 3, wherein, The starting pull rope is provided with a plurality of sub-pull ropes which are connected with the oxygen production agent bag and the opening blade respectively.

5. The portable multi-purpose self-contained oxygen supply device of claim 1, wherein, The filter diaphragm comprises a filter screen and a gas permeable film, and the filter screen is arranged in close contact with the gas permeable film; the gas permeable film is arranged close to the inner wall of the shell, and the filter screen is arranged away from the inner wall of the shell.

6. The portable multi-purpose self-contained oxygen supply device of claim 5, wherein, The gas permeable film is an ePTFE film.

7. The portable multi-purpose self-contained oxygen supply device of claim 1, wherein, The oxygen delivery pipe is arranged on the outer side of the shell, one end of the oxygen delivery pipe passes through the shell to communicate with the filter cavity, and the other end of the oxygen delivery pipe passes through the shell to communicate with the oxygen storage cavity.

8. The portable multi-purpose self-contained oxygen supply device of claim 1, wherein, The oxygen delivery pipe is arranged inside the shell, one end of the oxygen delivery pipe passes through the filter diaphragm to communicate with the filter cavity, and the other end of the oxygen delivery pipe passes through the partition plate to communicate with the oxygen storage cavity.

9. The portable multi-purpose self-contained oxygen supply device of any one of claims 1 to 6, wherein, The cover is additionally provided with a water injection port which is detachably connected with a water blocking cap.

10. The portable multi-purpose self-contained oxygen device of any one of claims 7 to 8, wherein, The oxygen delivery pipe is provided with a plurality of waterproof bends.

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