CN209245382U

CN209245382U - A kind of portable self-adapted pressure breather valve for oxygen cylinder

Info

Publication number: CN209245382U
Application number: CN201822099801.4U
Authority: CN
Inventors: 王东
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-13
Filing date: 2018-12-13
Publication date: 2019-08-13
Anticipated expiration: 2028-12-13

Abstract

The utility model belongs to respirator apparatus technical field, disclose a kind of portable self-adapted pressure breather valve for oxygen cylinder, including breathing valve body, it is equipped in breathing valve body and deposits air cavity, it breathes and is equipped with inlet channel below valve body, it deposits and is equipped with air inlet in air cavity, gas enters air inlet by inlet channel；Lever control valve is arranged in air inlet position, and lever control valve includes main valve body, the spool set on the lever assembly of upper part of the main valve body and set on main valve body lower part；Diaphragm is equipped with above lever assembly, diaphragm is contacted with lever assembly；Air pressure in air cavity is deposited when the utility model is using air-breathing to be reduced, and the volume for depositing air cavity is reduced by diaphragm contraction, and diaphragm shrinks lower promotion lever assembly, and main valve body inner passage is simultaneously unidirectionally opened in spool downward movement, and the gas unidirectional in air inlet, which enters, deposits air cavity；Intake process deposits pressure value in air cavity without adjusting, and can realize the balance of pressure value automatically, and using simpler quick, user's breathing is also lighter.

Description

A kind of portable self-adapted pressure breather valve for oxygen cylinder

Technical field

The utility model belongs to respirator apparatus technical field, and in particular to a kind of for the portable self-adapted of oxygen cylinder Pressure breather valve.

Background technique

Oxygen supply bottle respirator is widely used in the projects such as diving, medical treatment, mountain-climbing, and high pressure gas is contained in bottle respirator, is passed through Breather valve controls the supply amount of gas, convenient for users to obtaining oxygen supply during normal respiratory movement, is easy to use Person keeps normal motion state or vital sign.

Currently, common breather valve both at home and abroad, forward type breather valve and reverse can be divided by intake valve valve head opening direction Formula breather valve two types, reverse type breathing valve arrangement is more complicated, and forward type breather valve is because loaded on the intake valve on the valve Head movement is by the lever force with film contact and to act on the air inlet active force of valve head end face and overcome spring force and realize, is made Air inlet is opened, and provides gas required when air-breathing, thus when act on the supply gas pressure of valve head end face with the working time and under When drop, it is necessary to increase leveraged pressure, i.e. the power of motion of membrane increases, so that inspiratory resistance is increased, therefore forward type inlet valve Inspiratory resistance is to decline with bleed pressure and increase.In existing breather valve to solve this problem, it is provided on valve body special Pressure-regulating valve maintain inspiratory resistance equal during the entire process of using breather valve by the booster action of pressure-regulating valve Weighing apparatus, reduces the burden of user.

However exclusively carry out pressure by regulating valve and adjust and need to carry out manually, user is difficult in using respiratory Accurate control regulating time, it is also difficult to accurately control regulating degree, cause the inspiratory resistance in respiratory that cannot control well System.

Therefore, existing breather valve needs to propose more reasonable technical solution, to existing air-conditioning there are clearly disadvantageous The mounting structure of pipeline improves, and solves the technical problems existing in the prior art.

Utility model content

The utility model provides a kind of portable self-adapted pressure breather valve for oxygen cylinder, it is intended to breather valve Leveraged pressure structure improves, and breather valve is enable adaptively to adjust pressure, and user can get pair by the depth of breathing The respiratory capacity answered reduces the operation difficulty of user, improves degree easy to use without individually adjusting the pressure of gas supply.

In order to realize said effect, the technology employed by the present utility model is

A kind of portable self-adapted pressure breather valve for oxygen cylinder, including breathing valve body, the breather valve sheet It is equipped in vivo and deposits air cavity, deposit air cavity connection mouthpiece component.Specifically, being equipped with inlet channel below breathing valve body, air cavity is deposited Interior to be equipped with air inlet, gas enters air inlet by inlet channel；Lever control valve is arranged in air inlet position, and lever control valve includes Main valve body, the spool set on the lever assembly of upper part of the main valve body and set on main valve body lower part；Diaphragm, film are equipped with above lever assembly Piece is contacted with lever assembly；Lever assembly is pushed down on when diaphragm is shunk, spool downward movement is simultaneously unidirectionally opened in main valve body Portion channel, the gas unidirectional in air inlet, which enters, deposits air cavity.

Breather valve disclosed above changes the internal adjustable volume for depositing air cavity using the flexibility characteristics of diaphragm, when logical Mouthpiece component absorption is crossed when depositing the gas in air cavity, depositing the air pressure in air cavity reduces and subatmospheric, and diaphragm is made in atmospheric pressure With lower contraction and lever assembly is pushed down on, lever control valve is opened during this, and the gas in air inlet, which enters, deposits air cavity, and It is drawn from mouthpiece component.When from mouthpiece component to deposit exhale in air cavity when, deposit in air cavity air pressure and increase, diaphragm restores normal State, lever control valve are re-closing off, and the gas in air inlet, which stops entering, deposits air cavity.

Further, it realizes that lever control valve is opened in breathing process, accordingly links in leverage bottom spool, be real This existing process, optimizes above-mentioned technical proposal, and propose a preferred technical solution, and the spool includes pushing away Bar, the upper end of push rod enter the inner passage of main valve body, and plug is arranged in the lower end of push rod, and the lower end sliding of plug is equipped with sealing Piece；Packing spring is also cased on plug, diaphragm seal is pushed and pushed against by Packing spring；The upper end of plug is provided with seal head, sealing Head is used for closed interior channel.When lever assembly is pushed down on by diaphragm, push rod is pushed, and the seal head of push rod releases at this time In sealing contact with inner passage, the inner passage for being, which has been connected to, deposits air cavity and air inlet, realizes air inlet；The effect of Packing spring Being to provide restoring force makes seal head generate the trend of internally channel movement, and when push rod pushes, Packing spring is compressed, and is pushed Degree it is bigger, Packing spring it is bigger by decrement, the restoring force of generation is stronger.

During push rod is pressed down, push rod lower end, which also follows, to be moved down, in order to provide it is enough move down space, propose one An elongated hole is arranged in the lower part of air inlet in the preferred scheme of kind, its lower end can enter elongated hole when push rod is pressed down.Under push rod The aperture of the plug fitting elongated hole at end, effect are to prevent gas in air inlet from extension the orifice sealing of elongated hole Hole leakage.

Further, seal head realizes air inlet to the sealing and unlatching of inner passage and deposits the connection and cutting of air cavity, In order to improve sealing performance, above-mentioned technical proposal is optimized, the seal head includes the sealing surface of arc.

Preferably, the sealing surface on seal head may be configured as sphere curved surface.

Further, above-mentioned technical proposal is optimized, is adapted with the structure of seal head, the main valve body it is interior Portion channel includes the passway of arc, and fitting gasket is provided at passway.

Preferably, passway may be configured as sphere curved surface, the shape for being bonded gasket is also sphere curved surface, when seal head with When inner passage contacts, sealing surface pushes against fitting gasket, so that passway, by gluing, sealing, the gas in air inlet is blocked It cannot be introduced into and deposit air cavity.

Further, lever assembly transmits pressure under the suppressing action of diaphragm, and spool is pushed to move down, and is realizing the process Scheme in, enumerate one of preferred scheme, the lever assembly includes be hinged on main valve body upper end first hinged Bar and the second hinge bar, the front end of the first hinge bar contact diaphragm, rear the second hinge bar of end in contact, and the contact of the second hinge bar pushes away Bar；When diaphragm pushes the first hinge bar, the first hinge bar rotates down and contacts the second hinge bar, the linkage of the second hinge bar and under Press push rod.

Further, breather valve is connected with external air source when in use, the high pressure gas when being connected to gas cylinder, in gas cylinder Enter inlet channel by bottle internal pressure, when bottle internal pressure is reduced to a certain extent, can not continue to supply, need to improve in bottle at this time It is depressed into certain degree, the mode reinflated to gas cylinder can be used and realize；Therefore above-mentioned technical proposal is optimized, the breathing Aeration aperture is provided on valve body, aeration aperture is connected to inlet channel, is provided with charge valve at aeration aperture.

Further, charge valve starts when to inflating gas cylinder, closes when non-aerating, and the charge valve is unidirectional Valve, gas can only enter aeration aperture from outside by charge valve, and the gas in aeration aperture can not be leaked by charge valve.It sets in this way It sets and improves degree easy to use.

Further, above-mentioned technical proposal is optimized, is provided with air gauge, air gauge on the breathing valve body Measuring pressure passage be connected to inlet channel, air gauge is used to measure air pressure in inlet channel.Using air gauge in inlet channel Air pressure carry out real-time monitoring, judge the gas supply situation of gas cylinder convenient for understanding, determine the time being inflated.

Further, user is in carrying out breathing process, deposit air pressure in air cavity can assisted respiartion, reduce breathing Resistance；But it deposits that the air pressure in air cavity is excessively high will to be unfavorable for normally breathing, therefore above-mentioned technical proposal is optimized, described deposits Safety valve is equipped in air cavity, the pressure relief opening of safety valve is connected to inlet channel, and air pressure in air cavity is excessively high to cause safety valve to be opened when depositing When, the gas deposited in air cavity is released by pressure relief opening.As a preferred option, it is connected to by pressure relief opening with inlet channel, pressure release The gas that mouth releases enters inlet channel, can so reduce the waste of gas.

Further, above-mentioned technical proposal is optimized, the mouthpiece component includes connecting with breathing valve body Respiratory siphon and the bite being socketed on respiratory siphon.

Preferably, the respiratory siphon uses rigid pipe, and the bite is made of flexible material, such as silica gel material Material.

Further, above-mentioned technical proposal is optimized, the air cavity of depositing is equipped with venthole, is covered at venthole Outlet diaphragm, outlet diaphragm make to deposit the gas in air cavity and are unidirectionally flowed out by venthole.

Preferably, outlet diaphragm is made of flexible material, such as rubber.The fitting of outlet diaphragm is played at venthole The effect of check valve.

Further, above scheme is optimized, the breathing valve body upper opening, open communication deposits air cavity； Opening is provided with ring cowling and bowl film, and the ring cowling is connected to opening and pushes against the edge of bowl film, and bowl film is by the edge of diaphragm It pushes against.

Preferably, bowl film is equipped with balancing air holes, and effect is so that the air pressure acted in diaphragm outer surface is atmosphere Pressure, when deposit the air pressure in air cavity it is subatmospheric when, external pressure can push diaphragm to compress, and keep depositing air pressure in air cavity and outer Portion's atmospheric pressure balance.

Preferably, bowl film is made of flexible material, such as silica gel.The meaning being arranged in this way is that diaphragm can not be automatic When contraction, diaphragm can be pushed by pressing bowl film, to drive lever assembly, air cavity air inlet is deposited in realization.

Compared with prior art, the utility model has the following beneficial effects:

The use of the new type deposits the characteristics of air pressure reduces in air cavity, passes through film by setting lever control valve when using air-breathing Piece contraction, which is reduced, deposits the volume of air cavity, and synchronous drive lever control valve is opened when diaphragm is shunk, realize deposit air cavity into Gas；Intake process can realize the balance of pressure value, using simpler fast without adjusting the pressure value deposited in air cavity automatically Victory, user's breathing are also lighter.

Detailed description of the invention

It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment Attached drawing be briefly described, it should be understood that the following drawings only shows the section Example of the utility model, therefore does not answer Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also To obtain other relevant attached drawings according to these attached drawings.

Fig. 1 is the overall structure diagram of breather valve.

Fig. 2 is the decomposition texture schematic diagram and enlarged schematic partial view of breather valve.

Fig. 3 is the inner mounting structure schematic diagram of breather valve.

Fig. 4 is the schematic cross-sectional view of breather valve.

Fig. 5 is the isometric side view angle schematic diagram of sectional structure of breather valve.

Fig. 6 is the schematic diagram of internal structure for breathing valve body.

Fig. 7 is the schematic cross-sectional view breathed at valve body inlet channel.

Fig. 8 is schematic cross-sectional view when lever control valve is opened.

Fig. 9 is the valve core structure schematic diagram of lever control valve.

In upper figure, each label is meant that: 1- breathes valve body；101- inlet channel；102- thread head；103- deposits gas Chamber；104- air inlet；2- ring cowling；3- bowls of films；301- balancing air holes；4- respiratory siphon；5- bite；6- air gauge；7- charge valve； 701- valve core spring；702- valve core plug；8- safety valve；9- lever control valve；The first hinge bar of 901-；902- second is hinged Bar；903- main valve body；The inner passage 903a-；903b- is bonded gasket；904- spool；904a- push rod；904b- seal head； 904c- Packing spring；904d- diaphragm seal；10- diaphragm；11- outlet diaphragm；12- venthole；13- aeration aperture.

Specific embodiment

With reference to the accompanying drawing and specific embodiment does further explaination to the utility model.

Embodiment 1:

As shown in Figure 1, Figure 2, Figure 3, Figure 4, present embodiment discloses a kind of portable self-adapted pressure for oxygen cylinder Breather valve, including breathing valve body, interior be equipped with of the breathing valve body deposit air cavity 103, deposit air cavity 103 and be connected to mouthpiece component. Specifically, being equipped with inlet channel 101 below breathing valve body, deposits and be equipped with air inlet 104 in air cavity 103, gas passes through air inlet Channel 101 enters air inlet 104；Lever control valve 9 is set at air inlet 104, and lever control valve 9 includes main valve body 903, is set to The lever assembly on 903 top of main valve body and spool 904 set on 903 lower part of main valve body；Diaphragm 10, film are equipped with above lever assembly Piece 10 is contacted with lever assembly；Lever assembly is pushed down on when diaphragm 10 is shunk, 904 downward movement of spool simultaneously unidirectionally opens master 903 inner passage 903a of valve body, the gas unidirectional in air inlet 104, which enters, deposits air cavity 103.

In the present embodiment, the breathing valve body is cylinder.The lower part of breathing valve body is provided with threaded connector, The inlet channel 101 is located in the threaded connector, and breathing valve body is connected through a screw thread head connection gas cylinder, inlet channel 101 connection gas cylinders.

Breather valve disclosed above changes the internal adjustable volume for depositing air cavity 103 using the flexibility characteristics of diaphragm 10, When depositing the gas in air cavity 103 by mouthpiece component absorption, air pressure reduction and subatmospheric, the diaphragm in air cavity 103 are deposited 10 shrink and push down on lever assembly under atmospheric pressure effect, and lever control valve 9 is opened during this, in air inlet 104 Gas, which enters, deposits air cavity 103, and is drawn from mouthpiece component.When from mouthpiece component to deposit exhale in air cavity 103 when, deposit air cavity Air pressure increases in 103, and diaphragm 10 returns to normal, and lever control valve 9 is re-closing off, and the gas in air inlet 104, which stops entering, to be deposited Air cavity 103.

As shown in Figure 8, Figure 9, in the present embodiment, lever assembly transmits pressure under the suppressing action of diaphragm 10, pushes valve Core 904 moves down, and in the scheme for realizing the process, enumerates one of preferred scheme, the lever assembly includes hinged The front end of the first hinge bar 901 and the second hinge bar 902 in 903 upper end of main valve body, the first hinge bar 901 contacts diaphragm 10, The second hinge bar of end in contact 902 afterwards, the second hinge bar 902 contact push rod 904a；When diaphragm 10 pushes the first hinge bar 901, the One hinge bar 901 rotates down and contacts the second hinge bar 902, and the second hinge bar 902 links and pushes push rod 904a.

As shown in Figure 5, Figure 7, in the present embodiment, breather valve is connected with external gas cylinder when in use, when being connected to gas cylinder, High pressure gas in gas cylinder enters inlet channel 101 by bottle internal pressure, when bottle internal pressure is reduced to a certain extent, can not continue to supply Gas, needs to improve at this time and is depressed into certain degree in bottle, and the mode reinflated to gas cylinder can be used and realize；Therefore to above-mentioned technical side Case optimizes, and is provided with aeration aperture 13 on the breathing valve body, and aeration aperture 13 is connected to inlet channel 101, at aeration aperture 13 It is provided with charge valve 7.

Specifically, charge valve 7 starts when to inflating gas cylinder, closed when non-aerating, the charge valve 7 is unidirectional Valve, gas can only enter aeration aperture 13 from outside by charge valve 7, and the gas in aeration aperture 13 can not be leaked by charge valve 7. Setting improves degree easy to use in this way.In the present embodiment, the spool 904 of charge valve 7 includes valve core plug 702 and spool bullet Spring 701, valve core spring 701 push plug to close charge valve 7, and only the pressure of external inflation gas source develops valve core spring 701 Elastic force when, valve core spring 701 is compressed, charge valve 7 open realize inflation.

Above-mentioned technical proposal is optimized, air gauge 6, the survey pressure of air gauge 6 are provided on the breathing valve body Channel is connected to inlet channel 101, and air gauge 6 is used to measure the air pressure in inlet channel 101.Using air gauge 6 to inlet channel Air pressure in 101 carries out real-time monitoring, convenient for understanding the gas supply situation for judging gas cylinder, determines the time being inflated.

User in carrying out breathing process, deposit air pressure in air cavity 103 can assisted respiartion, reduce the resistance of breathing； But it deposits that the air pressure in air cavity 103 is excessively high will to be unfavorable for normally breathing, therefore above-mentioned technical proposal is optimized, described deposits gas Safety valve 8 is equipped in chamber 103, the pressure relief opening of safety valve 8 is connected to inlet channel 101, and air pressure in air cavity 103 is excessively high to be caused to pacify when depositing When full valve 8 is opened, the gas deposited in air cavity 103 is released by pressure relief opening.As a preferred option, logical by pressure relief opening and air inlet Road 101 is connected to, and the gas that pressure relief opening releases enters inlet channel 101, can so reduce the waste of gas.

Above-mentioned technical proposal is optimized, the mouthpiece component include with the respiratory siphon 4 that connect of breathing valve body and The bite 5 being socketed on respiratory siphon 4.

In the present embodiment, the respiratory siphon 4 uses rigid pipe, and the bite 5 is made of flexible material, such as silicon Glue material.

As shown in fig. 6, optimizing to above-mentioned technical proposal, described deposits air cavity 103 equipped with venthole 12, venthole 12 Place is covered with outlet diaphragm 11, and outlet diaphragm 11 makes to deposit the gas in air cavity 103 and unidirectionally flowed out by venthole 12.

In the present embodiment, outlet diaphragm 11 is made of flexible material, such as rubber.The fitting of outlet diaphragm 11 and venthole At 12, play the role of check valve.

Above scheme is optimized, the breathing valve body upper opening, open communication deposits air cavity 103；Opening It is provided with ring cowling 2 and bowl film 3, the ring cowling 2 is connected to opening and pushes against the edge of bowl film 3, and bowl film 3 is by the edge of diaphragm 10 It pushes against.Specifically, ring cowling 2 is connected through a screw thread with opening.

In the present embodiment, bowl film 3 is equipped with balancing air holes 301, and effect is so that acting in 10 outer surface of diaphragm Air pressure is atmospheric pressure, when deposit the air pressure in air cavity 103 it is subatmospheric when, external pressure can push diaphragm 10 compress, keep depositing Air pressure and external pressure in air cavity 103 balance.

In the present embodiment, bowl film 3 is made of flexible material, such as silica gel.The meaning being arranged in this way is, 10 nothing of diaphragm When method is shunk automatically, diaphragm 10 can be pushed by pressing bowl film 3, to drive lever assembly, 103 air inlet of air cavity is deposited in realization.

Embodiment 2:

Present embodiment discloses a kind of portable self-adapted pressure breather valves for oxygen cylinder, including breathe valve body, It is equipped in the breathing valve body and deposits air cavity 103, deposited air cavity 103 and be connected to mouthpiece component.Specifically, below breathing valve body It equipped with inlet channel 101, deposits and is equipped with air inlet 104 in air cavity 103, gas enters air inlet 104 by inlet channel 101；Into Lever control valve 9 is set at stomata 104, and lever control valve 9 includes main valve body 903, the lever assembly set on 903 top of main valve body With the spool 904 for being set to 903 lower part of main valve body；Diaphragm 10 is equipped with above lever assembly, diaphragm 10 is contacted with lever assembly；Work as film Piece 10 pushes down on lever assembly when shrinking, 904 downward movement of spool simultaneously unidirectionally opens 903 inner passage 903a of main valve body, into Gas unidirectional in stomata 104, which enters, deposits air cavity 103.

The present embodiment uses the technical solution different from embodiment 1, it is specific the difference is that:

It in the present embodiment, realizes that lever control valve 9 is opened in breathing process, accordingly joins in leverage bottom spool 904 It is dynamic, to realize this process, above-mentioned technical proposal is optimized, and propose a preferred technical solution, the spool 904 include push rod 904a, and the upper end of push rod 904a enters the inner passage 903a of main valve body 903, the lower end setting of push rod 904a The lower end sliding of plug, plug is equipped with diaphragm seal 904d；Packing spring 904c is also cased on plug, Packing spring 904c will be sealed Piece 904d, which is pushed, to be pushed against；The upper end of plug is provided with seal head 904b, and seal head 904b is used for closed interior channel 903a.In thick stick When bar assembly is pushed down on by diaphragm 10, push rod 904a is pushed, and the seal head 904b of push rod 904a releases logical with inside at this time Road 903a's is in sealing contact, and the inner passage 903a for being, which has been connected to, deposits air cavity 103 and air inlet 104, realizes air inlet；Packing spring The effect of 904c is to provide the trend that restoring force makes seal head 904b generate internally channel 903a movement, when push rod 904a is pushed When Packing spring 904c compressed, the degree of pushing is bigger, and Packing spring 904c's is bigger by decrement, and the restoring force of generation is got over By force.

During push rod 904a is pressed down, the lower end push rod 904a, which also follows, to be moved down, and enough moves down sky to provide Between, it proposes a kind of preferred scheme, one elongated hole is set in the lower part of air inlet 104, its lower end can when push rod 904a is pressed down Into elongated hole.The aperture of the plug fitting elongated hole of the lower end push rod 904a, effect is to prevent the orifice sealing of elongated hole Gas in air inlet 104 is leaked from elongated hole.

The structure and connection type of other component are in the same manner as in Example 1 in the present embodiment, are not described in more detail here.

Embodiment 3:

In the present embodiment, seal head 904b realizes air inlet 104 to the sealing and unlatching of inner passage 903a and deposits air cavity 103 connection and cutting optimizes above-mentioned technical proposal to improve sealing performance, and the seal head 904b includes The sealing surface of arc.

Specifically, the sealing surface on seal head 904b may be configured as sphere curved surface.

Above-mentioned technical proposal is optimized, is adapted with the structure of seal head 904b, the inside of the main valve body 903 Channel 903a includes the passway of arc, and fitting gasket 903b is provided at passway.

Specifically, passway may be configured as sphere curved surface, the shape of fitting gasket 903b is also sphere curved surface, works as seal head When contacting with inner passage 903a of 904b, sealing surface pushes against fitting gasket 903b, so that passway is by gluing, sealing, air inlet Gas in hole 104, which is blocked cannot be introduced into, deposits air cavity 103.

Above is the several embodiments that the utility model is enumerated, but the utility model is not limited to above-mentioned optional reality Apply mode, those skilled in the art can obtain other numerous embodiments according to the mutual any combination of aforesaid way, anyone Other various forms of embodiments can be all obtained under the enlightenment of the utility model.Above-mentioned specific embodiment should not be understood in pairs The limitation of the protection scope of the utility model, the protection scope of the utility model should be subject to be defined in claims, And specification can be used for interpreting the claims.

Claims

1. a kind of portable self-adapted pressure breather valve for oxygen cylinder, including breathing valve body, the breathing valve body Interior be equipped with deposits air cavity (103), deposits air cavity (103) connection mouthpiece component；It is characterized by: logical equipped with air inlet below breathing valve body Road (101) is deposited in air cavity (103) and is equipped with air inlet (104), and gas enters air inlet (104) by inlet channel (101)；Into Lever control valve (9) are set at stomata (104), lever control valve (9) includes main valve body (903), is set to main valve body (903) top Lever assembly and be set to main valve body (903) lower part spool (904)；Diaphragm (10) are equipped with above lever assembly, diaphragm (10) It is contacted with lever assembly；Lever assembly is pushed down on when diaphragm (10) are shunk, spool (904) downward movement simultaneously unidirectionally opens master The inner passage (903a) of valve body (903), the gas unidirectional in air inlet (104), which enters, deposits air cavity (103).

2. the portable self-adapted pressure breather valve according to claim 1 for oxygen cylinder, it is characterised in that: described Spool (904) includes push rod (904a), and the upper end of push rod (904a) enters the inner passage (903a) of main valve body (903), push rod Plug is arranged in the lower end of (904a), and the lower end sliding of plug is equipped with diaphragm seal (904d)；Packing spring is also cased on plug Diaphragm seal (904d) is pushed and is pushed against by (904c), Packing spring (904c)；The upper end of plug is provided with seal head (904b), sealing Head (904b) is used for closed interior channel (903a).

3. the portable self-adapted pressure breather valve according to claim 2 for oxygen cylinder, it is characterised in that: described Seal head (904b) includes the sealing surface of arc.

4. the portable self-adapted pressure breather valve according to claim 2 for oxygen cylinder, it is characterised in that: described Lever assembly includes the first hinge bar (901) and the second hinge bar (902) for being hinged on main valve body (903) upper end, and first is hinged The front end of bar (901) contacts diaphragm (10), rear the second hinge bar of end in contact (902), and the second hinge bar (902) contacts push rod (904a)；When diaphragm (10) push the first hinge bar (901), the second hinge bar (902) links and pushes push rod (904a).

5. the portable self-adapted pressure breather valve according to claim 1 for oxygen cylinder, it is characterised in that: the master The inner passage (903a) of valve body (903) includes the passway of arc, and fitting gasket (903b) is provided at passway.

6. the portable self-adapted pressure breather valve according to claim 1 for oxygen cylinder, it is characterised in that: described to exhale It inhales and is provided with aeration aperture (13) on valve body, aeration aperture (13) is connected to inlet channel (101), and aeration aperture is provided with inflation at (13) Valve (7).

7. the portable self-adapted pressure breather valve according to claim 1 for oxygen cylinder, it is characterised in that: described It deposits in air cavity (103) and is equipped with safety valve (8), the pressure relief opening of safety valve (8) is connected to inlet channel (101), interior when depositing air cavity (103) When air pressure is excessively high to cause safety valve (8) to open, the gas deposited in air cavity (103) is released by pressure relief opening.

8. the portable self-adapted pressure breather valve according to claim 1 for oxygen cylinder, it is characterised in that: described It is provided with air gauge (6) on breathing valve body, the measuring pressure passage of air gauge (6) is connected to inlet channel (101), and air gauge (6) is used Air pressure in measurement inlet channel (101).

9. the portable self-adapted pressure breather valve according to claim 1 for oxygen cylinder, it is characterised in that: described Mouthpiece component includes the respiratory siphon (4) connecting with breathing valve body and the bite (5) being socketed on respiratory siphon (4).

10. the portable self-adapted pressure breather valve according to claim 1 for oxygen cylinder, it is characterised in that: described Deposit air cavity (103) equipped with venthole (12), be covered with outlet diaphragm (11) at venthole (12), outlet diaphragm (11) makes to deposit gas Gas in chamber (103) is unidirectionally flowed out by venthole (12).