Portable oxygen bottle

Abstract

The utility model relates to the field of medical instruments, and discloses a portable oxygen bottle which comprises a shell, a catheter, a catheter spring and an air valve. The shell comprises an upper shell, a middle shell and a lower shell which are sequentially arranged from top to bottom; the upper shell comprises a hollow upper bottom surface and a side wall, the middle shell comprises a side wall, the lower shell comprises a lower bottom surface and a side wall, and oxygen is stored in the lower shell; the bottom of the upper shell moves up and down without being higher than the top of the middle shell; the guide pipe and the valve are hollow long pipes, the guide pipe spring surrounds the guide pipe, the valve switch is arranged on the outer wall of the guide pipe, and the bottom of the guide pipe is connected with the top of the valve. In the standing state, the guide pipe is located below the cavity of the upper shell, and the air valve is closed; in a pressing state, the upper shell moves downwards, and the upper end of the guide pipe extends out of the cavity of the upper shell; when the upper bottom face of the upper shell makes contact with the valve switch and continues to be pressed downwards, the valve is opened, and oxygen flows out of the guide pipe. The device is easy and convenient to operate, and the catheter and oxygen can be released conveniently and rapidly.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field more particularly to a portable oxygen cylinder. BACKGROUND

[0002] This section aims to provide background or context for the embodiments of the application recited in the claims. The description herein is not admitted to be prior art merely by inclusion in this section.

[0003] Nowadays, people's mental state is not good during work and life due to fast pace of life, high mental pressure, poor sleep quality and other factors, and they often cannot concentrate and feel tired and sleepy. Caffeine and other substances that can refresh people are widely used in people's life. A large number of studies have shown that the use of such substances can help improve the current mental state, but at the same time, they may have side effects and cause people to become dependent.

[0004] Human mental state is closely related to the state of brain cells, and the oxygen content in blood directly affects the life state of cells. Adequate oxygen content can make cells in an efficient respiratory state, thereby improving the vitality of cells. Inhaling high-purity oxygen as an effective method to keep civil aviation pilots in a highly alert state in emergency situations is adopted by many airlines and equipped with related equipment in the cockpit.

[0005] Inhaling high-purity oxygen as an instant refreshing method can help people improve their mental performance at critical moments in daily life, learning, work and examinations. Unlike the above-mentioned caffeine drinks, this method is instant and healthy, and does not have side effects. Currently, inhalable oxygen equipment is equipped in special occasions, and the equipment itself is relatively complex, which cannot meet the daily use function described above. A portable application device is needed to achieve the purpose of improving mental state by inhaling high-purity oxygen. SUMMARY

[0006] The utility model discloses a portable oxygen cylinder can conveniently and quickly release the catheter and oxygen.

[0007] The utility model discloses a portable oxygen cylinder, including shell, catheter, catheter spring and valve:

[0008] The shell includes upper shell, middle shell and lower shell, the upper shell, the middle shell and the lower shell are all column bodies, and are placed in order from top to bottom, the upper shell includes hollow upper bottom and side wall, the middle shell includes side wall, the lower shell includes lower bottom and side wall, and oxygen is stored in the lower shell, the upper shell bottom and the middle shell top are movably connected, so that the upper shell bottom moves up and down without being higher than the middle shell top,

[0009] The conduit and the valve are both hollow long tubes, the conduit spring is wrapped around the conduit, the valve switch is on the outer wall of the conduit, the bottom of the conduit is connected to the top of the valve;

[0010] In the resting state, the conduit is below the hollow of the upper shell, the valve is closed; in the pressing state, the upper shell moves down, the upper end of the conduit extends out of the hollow of the upper shell; when the upper bottom surface of the upper shell reaches the valve switch and continues to press down, the valve opens, and oxygen flows out of the conduit.

[0011] In a preferred embodiment, it comprises: a cover is arranged in the upper bottom surface of the upper shell, the cover is used to cover the hollow, the diameter of the conduit plus the width of the valve switch in the horizontal plane is greater than the diameter of the hollow, the diameter of the hollow is greater than the diameter of the conduit, and the diameter of the conduit is greater than the diameter of the valve.

[0012] In a preferred embodiment, it comprises:

[0013] The outer side of the bottom of the upper shell comprises a protrusion;

[0014] The inner side of the top of the middle shell comprises a stopper;

[0015] The outer diameter of the side wall of the upper shell is less than the inner diameter of the side wall of the middle shell minus the horizontal width of the stopper; the outer diameter of the side wall of the upper shell plus the horizontal width of the protrusion is greater than the inner diameter of the side wall of the middle shell minus the horizontal width of the stopper, and is less than the inner diameter of the side wall of the middle shell;

[0016] In the resting state, the upper surface of the protrusion of the upper shell and the lower surface of the stopper of the middle shell are in contact.

[0017] In a preferred embodiment, it comprises:

[0018] The lower shell comprises an upper bottom surface; the upper end of the conduit spring is attached to the upper bottom surface of the upper shell, and the lower end of the conduit spring is attached to the upper bottom surface of the lower shell;

[0019] At the end of the pressing state, the upper shell is reset under the action of the conduit spring, and the upper end of the conduit returns to below the hollow.

[0020] In a preferred embodiment, it comprises:

[0021] The valve spring is wrapped around the valve, the lower side of the valve has openings on both sides, and the bottom of the valve is clamped inside the lower shell; the upper end of the valve spring is attached to the lower bottom surface of the conduit, and the lower end is attached to the upper bottom surface of the lower shell;

[0022] In the resting state, the valve is closed under the support of the valve spring, the opening of the valve is outside the lower shell, and oxygen cannot enter the valve;

[0023] In the pressing state, when the upper bottom of the upper shell reaches the valve switch and continues to press down, the opening is inside the lower shell, the valve is opened, and oxygen enters the valve from the opening.

[0024] In a preferred embodiment, it further comprises a valve box and a valve core, the valve box is a box and is placed between the middle shell and the lower shell, the valve extends from the upper end of the valve box, the valve core extends from the lower end of the valve box, the diameter of the valve is larger than that of the valve core, the valve box is used to control the entry and exit of oxygen, and the valve core is used to communicate with the liquid oxygen in the lower shell.

[0025] In the valve box, the valve and the valve core are connected through a jet control body, the pressing rod moves with the guide pipe, the lever is aligned with the end of the pressing rod, the lever is fixed in the valve box, and the other end of the lever is connected to the side wall of the valve; when the guide pipe does not move down, the pressing rod does not contact the lever.

[0026] When the valve switch is pressed by the upper shell, the guide pipe moves down, the pressure in the lower shell increases, the liquid oxygen flows to the valve through the valve core, the valve switch presses one end of the lever, the other end of the lever lifts the valve, opens the valve in the jet control body, opens the valve, and the liquid oxygen is transmitted to the guide pipe.

[0027] In a preferred embodiment, it further comprises a horizontal rotary knob, which is placed between the bottom of the middle shell and the top of the lower shell.

[0028] The horizontal rotary knob comprises a peripheral disc connected to the shell and an adjusting gear contacting the jet control body, the outer side and the inner side of the peripheral disc are toothed, and the inner diameter of the peripheral disc is larger than the diameter of the valve box.

[0029] The adjusting gear is horizontally fixed and extends from the box to contact the inner side of the peripheral disc in the horizontal direction, and the other side of the adjusting gear contacts the side wall of the jet control body.

[0030] When the peripheral disc of the horizontal rotary knob rotates horizontally, it drives the adjusting gear to rotate horizontally, the adjusting gear drives the jet control body to rotate horizontally, and the horizontal rotation of the jet control body controls the size of the gas inlet and outlet.

[0031] In a preferred embodiment, the middle shell is detachable, the guide pipe is replaceable; and / or

[0032] The side wall of the lower shell is provided with a scale mark.

[0033] In a preferred embodiment, the bottom of the lower shell comprises a liquid filling port or an air filling port, and the liquid filling port or the air filling port is a one-way valve made of rubber or polyethylene.

[0034] In a preferred embodiment, the height of the upper shell is 8-13 mm, the height of the middle shell is 9-16 mm, the height of the protrusion at the bottom of the upper shell is 1-3 mm, the distance from the upper bottom surface of the upper shell to the valve switch is less than the height of the middle shell, and the range of the downward movement of the catheter is 1-3 mm.

[0035] Compared with the prior art, the main difference and effect of the embodiment of the present application are as follows:

[0036] The present application is easy to operate, can conveniently and quickly release the catheter and oxygen, and improves the physical health status of the user.

[0037] Further, it can prevent misoperation and dust, and ensure the use hygiene of the user.

[0038] Further, it is suitable for multiple needs, improves the experience and use feeling of the user inhaling.

[0039] Further, it is convenient for the user to control the gas content.

[0040] It should be understood that, within the scope of the present application, the above-mentioned technical features of the present application and the technical features described in detail in the following (such as the embodiments) can be combined with each other, thereby constituting a new or preferred technical scheme. Due to the limited space, they will not be listed one by one here. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0042] Figure 1 is the overall structure schematic diagram of the portable oxygen cylinder in a stationary state according to an embodiment of the present application.

[0043] Figure 2 is the overall structure schematic diagram of the portable oxygen cylinder in a pressed state according to an embodiment of the present application.

[0044] Figure 3 is the top view schematic diagram of the two kinds of shielding covers according to an embodiment of the present application.

[0045] Figure 4 is a schematic diagram of a valve opening and closing mode according to an embodiment of the present application.

[0046] Figure 5 is a schematic diagram of the overall structure of a portable oxygen cylinder in a stationary state according to an embodiment of the present application.

[0047] Figure 6 is a schematic diagram of a valve opening and closing mode according to an embodiment of the present application.

[0048] Figure 7 is a schematic diagram of the cross section of two horizontal rotary knobs according to an embodiment of the present application. In each figure, each symbol is as follows:

[0049] 1 - outer shell;

[0050] 101 - upper outer shell;

[0051] 101.1 - cover;

[0052] 101.2 - protrusion;

[0053] 101.3 - limiting ring;

[0054] 102 - middle outer shell;

[0055] 102.1 - limiter;

[0056] 103 - lower outer shell;

[0057] 103.1 - liquid or air filling port;

[0058] 103.2 - first support;

[0059] 103.3 - scale mark;

[0060] 2 - conduit;

[0061] 201 - valve switch;

[0062] 202 - pressing rod;

[0063] 203 - outer ring;

[0064] 3 - conduit spring;

[0065] 4 - valve;

[0066] 401 - valve spring;

[0067] 402 - opening;

[0068] 403 - jet control body;

[0069] 5 - valve box;

[0070] 501 - lever;

[0071] 502.1 - second support;

[0072] 502.2 - third support;

[0073] 6 - horizontal rotary knob;

[0074] 601 - peripheral disc;

[0075] 602 - adjusting gear;

[0076] 603 - adjusting lever;

[0077] 7 - valve core. DETAILED DESCRIPTION

[0078] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one ordinarily skilled in the art that the present application can be practiced without these specific details and that numerous implementation variations and modifications can be possible.

[0079] In order to make the purpose, technical scheme and advantages of the present application clearer, the embodiments of the present application will be described in further detail below with reference to the drawings.

[0080] One embodiment of the present application relates to a portable oxygen cylinder, which has a structure as shown in Figure 1 and Figure 2 The device comprises a shell 1, a conduit 2, a conduit spring 3 and a valve 4.

[0081] The shell 1 comprises an upper shell 101, a middle shell 102 and a lower shell 103, all of which are cylinders and are placed in order from top to bottom. The upper shell 101 comprises a hollow bottom and a side wall, the middle shell 102 comprises a side wall, and the lower shell 103 comprises a bottom and a side wall. Oxygen is stored in the lower shell 103, which comprises liquid oxygen or high-concentration high-pressure oxygen. The bottom of the upper shell 101 and the top of the middle shell 102 are movably connected, so that the bottom of the upper shell 101 moves up and down without being higher than the top of the middle shell 102.

[0082] The conduit 2 and the valve 4 are both hollow long tubes, the conduit spring 3 surrounds the outside of the conduit 2, and the valve switch 201 is on the outer wall of the conduit 2. The bottom of the conduit 2 is connected to the top of the valve 4.

[0083] In a resting state, as shown in Figure 1 , the conduit 2 is located below the hollow of the upper shell 101, and the valve 4 is closed. In a pressing state, as shown in Figure 2As shown, the upper housing 101 moves downward, and the upper end of the conduit 2 extends out from the hole in the upper housing 101; when the upper bottom surface of the upper housing 101 touches the valve switch 201 and continues to be pressed down, the valve 4 opens, and oxygen flows out from the conduit 2.

[0084] This application combines the action of exposing or ejecting the tube 2 with the action of opening the valve 4 or activating the air valve, simplifying operation. The goal is achieved in two stages with a single press, allowing for convenient and quick release of the tube and oxygen, increasing oxygen levels and improving the user's health. Users can complete the simple actions such as pressing with one hand, providing a complete experience. The one-time operation prevents accidental operation and dust prevention, ensuring user hygiene. The integrated design also results in lower costs.

[0085] In one embodiment, it includes: Figure 3 As shown, a cover 101.1 is provided on the upper bottom surface of the upper housing 101. The cover 101.1 is used to cover the cavity. The diameter of the duct 2 plus the width of the valve switch 201 in the horizontal plane is greater than the diameter of the cavity, the diameter of the cavity is greater than the diameter of the duct 2, and the diameter of the duct 2 is greater than the diameter of the valve 4. The cover 101.1 here is not a necessary structure.

[0086] In one embodiment, such as Figure 3 As shown in (a), the cover 101.1 opens by rotating around a pivot point, as... Figure 3 As shown in (b), one end of the cover 101.1 is fixed to the upper outer shell 101, and the other end opens upward.

[0087] In one embodiment, it includes:

[0088] The outer bottom of the upper outer shell 101 includes a protrusion 101.2;

[0089] The inner top of the outer casing 102 includes a limiter 102.1;

[0090] The outer diameter of the side wall of the upper outer shell 101 is smaller than the inner diameter of the side wall of the middle outer shell 102 minus the horizontal width of the limiter 102.1; the outer diameter of the side wall of the upper outer shell 101 plus the horizontal width of the protrusion 101.2 is greater than the inner diameter of the side wall of the middle outer shell 102 minus the horizontal width of the limiter 102.1, and smaller than the inner diameter of the side wall of the middle outer shell 102.

[0091] In the stationary state, the upper surface of the protrusion 101.2 of the upper outer shell 101 is in contact with the lower surface of the limiter 102.1 of the middle outer shell 102.

[0092] In one embodiment, the protrusion 101.2 of the upper housing 101 includes a horizontal thread; the limiter 102.1 of the middle housing 102 includes a horizontal ring.

[0093] In one embodiment, comprising:

[0094] The lower shell 103 comprises an upper bottom surface; the upper end of the catheter spring 3 is attached to the upper bottom surface of the upper shell 101, and the lower end of the catheter spring 3 is attached to the upper bottom surface of the lower shell 103;

[0095] At the end of the pressing state, the upper shell 101 is reset under the action of the catheter spring 3, and the upper end of the catheter 2 is restored below the hollow.

[0096] In one embodiment, as shown in Figure 4 , the valve opening and closing mode comprises:

[0097] The valve spring 401 surrounds the valve 4, the lower side of the valve 4 has openings 402, and the bottom of the valve 4 is clamped inside the lower shell 103; the upper end of the valve spring 401 is attached to the lower bottom surface of the catheter 2, and the lower end is attached to the upper bottom surface of the lower shell 103;

[0098] In the resting state, as shown in Figure 4 (a), under the support of the valve spring 401, the openings 402 of the valve 4 are outside the lower shell 103, the valve 4 is closed, and oxygen cannot enter the valve 4;

[0099] In the pressing state, as shown in Figure 4 (b), when the upper bottom surface of the upper shell 101 reaches the valve switch 201 and continues to press down, the openings 402 are inside the lower shell 103, the valve 4 is opened, and oxygen enters the valve 4 from the openings 402.

[0100] In one embodiment, as shown in Figure 5 , the upper shell 101 is provided with a limiting ring 101.3 below the shielding cover 101.1, and the top of the catheter 2 has an outer ring 203, the diameter of the outer ring is greater than the diameter of the limiting ring; the limiting ring 101.3 and the outer ring 203 enable the catheter 2 to be placed vertically.

[0101] In one embodiment, as shown in Figure 5 and Figure 6 , the valve opening and closing mode further comprises a jet mode similar to a lighter, which specifically comprises: a valve box 5 and a valve core 7, the valve box 5 is a box and is placed between the middle shell 102 and the lower shell 103; the valve 4 extends from the upper end of the valve box 5, and the valve core 7 extends from the lower end of the valve box 5, the diameter of the valve 4 is greater than the diameter of the valve core 7; the valve box 5 is used to control the entry and exit of oxygen, and the valve core 7 is used to communicate with the liquid oxygen in the lower shell 103;

[0102] Within the valve box 5, valve 4 and valve core 7 are connected via an injection control body 403. The push rod 202 moves with the guide tube 2, and lever 501 is aligned with the end of the push rod 202. Lever 501 is fixed within the valve box 5, and the other end of lever 501 is connected to the side wall of valve 4. Figure 6 As shown in (a), when the conduit 2 has not moved down, the pressing rod 202 does not contact the lever 501;

[0103] like Figure 6 As shown in (b), when the valve switch 201 is pressed by the upper housing 101, the conduit 2 moves down, the pressure inside the lower housing 103 increases, and liquid oxygen flows through the valve core 7 to the valve 4. The valve switch 201 presses down one end of the lever 501, and the other end of the lever 501 lifts the valve 4, opening the valve inside the jet control body 403, so that the valve 4 is open and liquid oxygen is transmitted to the conduit 2.

[0104] In one embodiment, such as Figure 5 As shown, the valve box 5 is placed on the first bracket 103.2 inside the lower outer shell 103, and the lever 501 is supported by the second bracket 502.1 inside the valve box 5.

[0105] In one embodiment, the valve opening and closing method also includes using a spraying method similar to insecticide spraying, which mainly utilizes the principle of pressure difference. The bottle contains liquid oxygen and propellant, which is usually a substance that easily vaporizes at room temperature, such as propane or butane. These propellants create high pressure inside the bottle. When the upper outer shell is pressed, and the pressure reaches a certain level, the valve opens, and the high pressure inside the bottle causes the liquid oxygen and vaporized propellant to be sprayed out at high speed through conduit 2.

[0106] In one embodiment, such as Figure 7 As shown, it also includes: a horizontal rotary knob 6, which is placed between the bottom of the middle housing 102 and the top of the lower housing 103;

[0107] like Figure 7 As shown in (a), the horizontal rotary knob 6 includes an outer disc 601 that connects to the housing 1 and an adjusting gear 602 that contacts the jet control body 403. The outer and inner sides of the outer disc 4 are toothed, and the inner diameter of the outer disc 4 is larger than the diameter of the valve box 5.

[0108] The adjusting gear 602 is fixed horizontally and extends horizontally from the box to contact the inner side of the outer disc 4. The other side of the adjusting gear 602 contacts the side wall of the jet control body 403.

[0109] When the outer disc 601 of the horizontal rotary knob 6 rotates horizontally, it drives the adjusting gear 602 to rotate horizontally. The adjusting gear 602 drives the jet control body 403 to rotate horizontally. The horizontal rotation of the jet control body 403 controls the size of the gas flow inlet and outlet.

[0110] In one embodiment, as shown in (a) of FIG. 6, the adjusting gear 601 is supported by the third bracket 502.2 in the valve box 5. Figure 6

[0111] In one embodiment, as shown in (b) of FIG. 6, the horizontal rotary knob 6 includes a peripheral disc 601 and an adjusting rod 603, the adjusting rod is in contact with the adjusting gear 602 of the jet control body 401, and a gap is left in the valve box 5 for the adjusting rod 603 to rotate around the axis; when the peripheral disc 601 of the horizontal rotary knob 6 rotates horizontally, the adjusting rod 603 is driven to rotate, and the adjusting rod 603 drives the jet control body 401 to rotate horizontally, and the horizontal rotation of the jet control body 401 controls the size of the gas flow inlet and outlet. Figure 7

[0112] In one embodiment, as shown in (a) of FIG. 6, the adjusting gear 601 is supported by the third bracket 502.2 in the valve box 5. Figure 5

[0113] The side wall of the lower shell 103 is provided with a scale mark 103.3, which can display the remaining gas content or the remaining number of uses.

[0114] The inhalation catheter used in the present application can be connected to the nasal cavity, and the thickness of the catheter 2 can be replaced according to the needs of the user, so as to ensure that the user has a closed environment and is clean and sanitary when inhaling, and to improve the user's experience and use of the inhalation.

[0115] The horizontal rotary knob and visual capacity used in the present application facilitate the user to control the gas content.

[0116] In one embodiment, as shown in (a) of FIG. 6, the adjusting gear 601 is supported by the third bracket 502.2 in the valve box 5. Figure 5 In one embodiment, the height of the upper shell 101 is 8-13 mm, the height of the middle shell 102 is 9-16 mm, the height of the protrusion 101.2 at the bottom of the upper shell 101 is 1-3 mm, the distance from the upper bottom surface of the upper shell 101 to the valve switch 201 is less than the height of the middle shell 102, and the range of downward movement of the catheter 2 is 1-3 mm.

[0117]

[0118] ​​​​In one embodiment, the height of the upper housing 101 is 10mm, the height of the middle housing 102 is 12mm, the height of the protrusion 101.2 at the bottom of the upper housing 101 is 2mm, the height of the spring when it is naturally sprung is 20mm, the distance from the upper bottom surface of the upper housing 101 to the valve switch 201 is 10mm, when the upper housing is pressed down in the first stage, the catheter is exposed by 0-10mm, when the valve switch 201 is reached in the second stage and the pressing is continued, the catheter 2 is moved down by 2mm, and oxygen flows out.

[0119] It should be noted that the relational terms herein, such as first and second, and the like, are used solely to distinguish one from another entity or action, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0120] All documents mentioned in the present application are incorporated herein by reference as if each individual document were specifically and individually indicated to be incorporated by reference. In addition, it is to be understood that the application may be carried out by specifically different embodiments and that embodiments can be practiced without materials details particular to that variety of embodiments.

Claims

1. A portable oxygen cylinder characterized by, It comprises a shell (1), a conduit (2), a conduit spring (3) and a valve (4): The shell (1) comprises an upper shell (101), a middle shell (102) and a lower shell (103), all of which are cylinders and placed in order from top to bottom; the upper shell (101) comprises a hollow upper bottom and a side wall, the middle shell (102) comprises a side wall, and the lower shell (103) comprises a lower bottom and a side wall, with oxygen stored in the lower shell (103); the bottom of the upper shell (101) and the top of the middle shell (102) are movably connected, so that the bottom of the upper shell (101) moves up and down without being higher than the top of the middle shell (102); The conduit (2) and the valve (4) are both hollow long tubes, the conduit spring (3) surrounds the conduit (2), the valve switch (201) is on the outer wall of the conduit (2), and the bottom of the conduit (2) is connected to the top of the valve (4); In the resting state, the conduit (2) is below the hollow of the upper shell (101), and the valve (4) is closed; in the pressing state, the upper shell (101) moves downward, and the upper end of the conduit (2) protrudes from the hollow of the upper shell (101); when the upper bottom of the upper shell (101) touches the valve switch (201) and continues to be pressed downward, the valve (4) is opened, and oxygen flows out of the conduit (2).

2. The portable oxygen bottle of claim 1, wherein It comprises: A cover (101.1) is arranged on the upper bottom of the upper shell (101) to cover the hollow; the diameter of the conduit (2) plus the width of the valve switch (201) in the horizontal plane is greater than the diameter of the hollow, the diameter of the hollow is greater than the diameter of the conduit (2), and the diameter of the conduit (2) is greater than the diameter of the valve (4).

3. The portable oxygen bottle of claim 1, wherein, It comprises: A protrusion (101.2) is arranged on the outside of the bottom of the upper shell (101); A limiter (102.1) is arranged on the inside of the top of the middle shell (102); The outer diameter of the side wall of the upper shell (101) is less than the inner diameter of the side wall of the middle shell (102) minus the horizontal width of the limiter (102.1); the outer diameter of the side wall of the upper shell (101) plus the horizontal width of the protrusion (101.2) is greater than the inner diameter of the side wall of the middle shell (102) minus the horizontal width of the limiter (102.1) and less than the inner diameter of the side wall of the middle shell (102); In the resting state, the upper surface of the protrusion (101.2) of the upper shell (101) and the lower surface of the limiter (102.1) of the middle shell (102) are in contact.

4. The portable oxygen bottle of claim 1, wherein, It comprises: The lower shell (103) comprises an upper bottom; the upper end of the conduit spring (3) is attached to the upper bottom of the upper shell (101), and the lower end of the conduit spring (3) is attached to the upper bottom of the lower shell (103); At the end of the pressing state, the upper shell (101) is reset under the action of the catheter spring (3), and the upper end of the catheter (2) is restored below the cavity.

5. The portable oxygen bottle of claim 1, wherein, Comprise: The valve spring (401) surrounds the valve (4), the lower side of the valve (4) has openings (402), and the bottom of the valve (4) is clamped inside the lower shell (103); the upper end of the valve spring (401) is attached to the lower bottom surface of the catheter (2), and the lower end is attached to the upper bottom surface of the lower shell (103); In the resting state, under the support of the valve spring (401), the openings (402) of the valve (4) are outside the lower shell (103), the valve (4) is closed, and oxygen cannot enter the valve (4); In the pressing state, when the upper bottom surface of the upper shell (101) reaches the valve switch (201) and continues to press down, the openings (402) are inside the lower shell (103), the valve (4) is opened, and oxygen enters the valve (4) from the openings (402).

6. The portable oxygen bottle of claim 1, wherein, Also include: The valve box (5) and the valve core (7), the valve box (5) is a box and is placed between the middle shell (102) and the lower shell (103); the valve (4) extends from the upper end of the valve box (5), the valve core (7) extends from the lower end of the valve box (5), and the diameter of the valve (4) is greater than that of the valve core (7); the valve box (5) is used to control the entry and exit of oxygen, and the valve core (7) is used to communicate with the liquid oxygen in the lower shell (103); In the valve box (5), the valve (4) and the valve core (7) are connected by a jet control body (403), the pressing rod (202) moves with the catheter (2), the lever (501) is aligned with the end of the pressing rod (202), the lever (501) is fixed in the valve box (5), and the other end of the lever (501) is connected to the side wall of the valve (4); when the catheter (2) is not moved down, the pressing rod (202) does not contact the lever (501); When the valve switch (201) is pressed by the upper shell (101), the catheter (2) moves down, the pressure in the lower shell (103) increases, the liquid oxygen flows to the valve (4) through the valve core (7), the valve switch (201) lowers one end of the lever (501), the other end of the lever (501) lifts the valve (4), opens the valve in the jet control body (403), and opens the valve (4), and the liquid oxygen is transmitted to the catheter (2).

7. The portable oxygen bottle of claim 6, wherein, Also include: Horizontal rotary knob (6), the horizontal rotary knob (6) is placed between the bottom of the middle shell (102) and the top of the lower shell (103); The horizontal rotary knob (6) comprises a peripheral disc (601) connected to the outer shell (1) and an adjusting gear (602) contacting the jet control body (403), the peripheral disc (601) has teeth on both the outer side and the inner side, and the inner side of the peripheral disc (601) has a larger diameter than the valve box (5); The adjusting gear (602) is horizontally fixed and extends from the box to contact the inner side of the peripheral disc (601) in the horizontal direction, and the other side of the adjusting gear (602) contacts the side wall of the jet control body (403); When the peripheral disc (601) of the horizontal rotary knob (6) rotates horizontally, the adjusting gear (602) rotates horizontally, and the adjusting gear (602) drives the jet control body (403) to rotate horizontally, and the horizontal rotation of the jet control body (403) controls the size of the gas inlet and outlet.

8. The portable oxygen bottle of claim 1, wherein, The middle shell (102) is detachable, and the catheter (2) is replaceable; and / or The side wall of the lower shell (103) has a scale mark.

9. The portable oxygen bottle of claim 1, wherein, The bottom of the lower shell (103) comprises a liquid filling port or an air filling port (103.1), and the liquid filling port or the air filling port (103.1) is a one-way valve made of rubber or polyethylene material.

10. The portable oxygen bottle of claim 1, wherein, The height of the upper shell (101) is 8-13 mm, the height of the middle shell (102) is 9-16 mm, the height of the protrusion (101.2) at the bottom of the upper shell (101) is 1-3 mm, the distance from the upper bottom surface of the upper shell (101) to the air valve switch (201) is less than the height of the middle shell (102), and the range of the downward movement of the catheter (2) is 1-3 mm.

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