CN202497618U - Pressure flow regulator - Google Patents
Pressure flow regulator Download PDFInfo
- Publication number
- CN202497618U CN202497618U CN2012200731910U CN201220073191U CN202497618U CN 202497618 U CN202497618 U CN 202497618U CN 2012200731910 U CN2012200731910 U CN 2012200731910U CN 201220073191 U CN201220073191 U CN 201220073191U CN 202497618 U CN202497618 U CN 202497618U
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- CN
- China
- Prior art keywords
- pressure
- diaphragm
- low
- high pressure
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000001105 regulatory effect Effects 0.000 claims abstract description 21
- 230000000241 respiratory effect Effects 0.000 claims abstract description 6
- 206010008469 Chest discomfort Diseases 0.000 claims description 13
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 5
- 206010003497 Asphyxia Diseases 0.000 abstract description 3
- 230000035807 sensation Effects 0.000 abstract description 3
- 210000004712 air sac Anatomy 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 46
- 230000000694 effects Effects 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000008034 disappearance Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
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- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The utility model relates to a pressure flow regulator, which belongs to components of respiratory protective devices or respiratory devices. A high-pressure cavity, a low-pressure cavity and a diaphragm cavity are disposed inside a regulator, and the purpose of automatic air supply is achieved by means of controlling deformation of a diaphragm by the aid of negative pressure generated by a breather. The pressure flow regulator has the advantages that the volume of air which enters an air sac within unit time can be automatically regulated according to inspiration capacity of a wearer, the purpose of automatically regulating the inspiration capacity is achieved, and the sensation of asphyxia of the wearer is prevented.
Description
Technical field
The utility model relates to the member of a kind of respiratory protection equipment or breathing equipment, is specifically related to a kind of pressure flow adjuster that cooperates respirator to use.
Background technology
The self-carrying respirator is a kind of device of breathing at life-threatening at once and healthy environment of being used for.For example, under mine, supply the user to wear use.This respirator has braces usually, and this braces accommodates the gas tank that is connected with face shield.Gas tank leads to the air or oxygen that high pressure (2200psi～4500 psi) is housed, and is connected with pressure reducer, and pressure reducer reduces pressure, gets into air bag through adjuster again, supplies the wearer to breathe usefulness.The main effect of adjuster is the air velocity between control gas tank and the face shield.Adjuster commonly used can not be regulated the volume that gets into gas in the air bag in the unit interval automatically, when the wearer needs a large amount of air inlet, tends to produce sensation of asphyxia.
The utility model content
The purpose of the utility model is to provide a kind of pressure flow adjuster; This pressure flow adjuster can be according to wearer's besoin de respirer; Automatically regulate the volume that gets into gas in the air bag in the unit interval, reach automatic adjusting air inflow, avoid the wearer to produce the purpose of sensation of asphyxia.
For achieving the above object; The technical scheme of the utility model is: the pressure flow adjuster, comprise the intake valve that is connected to respiratory gas source, and be used to be connected to air bag provides air outlet valve from breathing gas to the user; Form pressure regulating cavity between intake valve and the air outlet valve; The low pressure that has been operably connected in said pressure regulating cavity diaphragm group and high pressure diaphragm group form high pressure chest between said high pressure diaphragm group and the intake valve, and are connected to air outlet valve through the high pressure gas outlet; Form low-pressure cavity between said low pressure diaphragm group and the high pressure diaphragm group, and be connected to air outlet valve through the low pressure gas outlet; Form diaphragm chamber in the said high pressure diaphragm group; Said intake valve comprised connect diaphragm chamber often drive gas port and the supply intake valve that is connected high pressure chest into; Said diaphragm chamber is communicated with low-pressure cavity through the diaphragm gas outlet; Said low pressure diaphragm group is provided with plug, and said low-pressure cavity is under the negative pressure state, the deformation of low pressure diaphragm group, and plug covers the diaphragm gas outlet, the supply inlet open, intake valve and high pressure chest are communicated with.
When adopting technique scheme, through often driving gas port into, quantitatively get into diaphragm chamber after the throttling, get into low-pressure cavity through the diaphragm gas outlet through post-decompression gun pressure gas, again through low pressure gas outlet input air bag, Here it is the basic plenum system under the state usually.When the increase of wearer's labour intensity, when quantitatively air feed can not be satisfied the demand, intracapsular pressure reduced; Form negative pressure; And this negative pressure value is delivered to diaphragm chamber, deformation takes place in low pressure diaphragm group under this suction function; The low-pressure cavity volume diminishes, and plug is along with low pressure diaphragm group moves up to covering the diaphragm gas outlet.At this moment, gun pressure gas can not get into low-pressure cavity, and in the diaphragm chamber accumulated.Because the diaphragm chamber space is limited, make the interior chamber of pressing of diaphragm chamber sharply raise, the high pressure diaphragm group is produced great pressure; Make the quick deformation of high pressure diaphragm group; Promotion is also opened the supply intake valve, and gun pressure gas at this moment just flows directly into high pressure chest, flows into air bag through the high pressure gas outlet again; Reach the effect of quick tonifying Qi, to satisfy wearer's aerobic requirement.Second kind of automatic tonifying Qi of plenum system of Here it is this adjuster.Along with the automatic supply of a large amount of gases, gasbag pressure raises, and negative pressure disappears.Plug on the low pressure diaphragm group leaves the diaphragm gas outlet.Gas in the diaphragm chamber passes through the diaphragm gas outlet and flows into low-pressure cavity, and it is normal that the pressure in the diaphragm chamber recovers, to the pressure disappearance of high pressure diaphragm group.The supply intake valve cuts out automatically, and no gas flows in the high pressure chest, and corresponding tonifying Qi automatically also stops automatically, and adjuster returns to quantitative air feed state.
Further, the negative pressure in order to regulate automatic tonifying Qi the time in the low-pressure cavity also is provided with pressure-regulating valve.Said pressure-regulating valve comprises the regulating part that is threaded with pressure regulating cavity, is connected with elastic component between said regulating part and the plug.Through the rotation adjusting part, can adjust the distance between regulating part and the plug, thereby regulate the preset elastic force of elastic component plug, move to and cover the required negative pressure in diaphragm gas outlet thereby changed in the low-pressure cavity plug.
Further, in order to make wearer's manually tonifying Qi voluntarily, run through being provided with an adjusting rod in the said regulating part, the bottom of said adjusting rod closely contacts with said elastic component, and the top of said adjusting rod protrudes in the end face of regulating part.The wearer exerts pressure to adjusting rod through manual adjustments, makes adjusting rod move down, and covers the diaphragm gas outlet thereby move down through elastic component jacking plug, makes air-flow directly flow into air bag through high pressure chest, plays the effect of manual tonifying Qi.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further detailed explanation:
Fig. 1 is the structural representation of the utility model pressure flow adjuster embodiment.
The specific embodiment
As shown in Figure 1; The pressure flow adjuster comprises the intake valve that is connected to respiratory gas source, is used to be connected to air bag provides air outlet valve from breathing gas to the user; Form pressure regulating cavity between intake valve and the air outlet valve; Be fixedly connected with low pressure diaphragm group 4 and high pressure diaphragm group 5 in the said pressure regulating cavity, form high pressure chest C between said high pressure diaphragm group 5 and the intake valve, and be connected to air outlet valve through high pressure gas outlet 12; Form low-pressure cavity A between said low pressure diaphragm group 4 and the high pressure diaphragm group 5, and be connected to air outlet valve through low pressure gas outlet 11; Form diaphragm chamber B in the said high pressure diaphragm group 5; Said intake valve comprised connect diaphragm chamber often drive gas port and the supply intake valve that is connected high pressure chest into; Said diaphragm chamber B is communicated with low-pressure cavity A through diaphragm gas outlet 27; Said low pressure diaphragm group 4 is provided with plug 41, and said low-pressure cavity A is under the negative pressure state, 4 deformation of low pressure diaphragm group, and plug 41 covers diaphragm gas outlet 27.
This pressure flow adjuster utilizes pneumatic amplification principle design.Its operation principle is: (0.3 ± 0.02MPa) through screen pack 23, again through supply valve rod 21, quantitatively gets into diaphragm chamber after the throttling, and 27 get into low-pressure cavity through the diaphragm gas outlet, again through low pressure gas outlet 11 input air bags for post-decompression gun pressure gas.The basic plenum system of Here it is respirator (flow >=1.4L/min).When the increase of wearer's labour intensity, when quantitatively air feed can not be satisfied the demand, intracapsular pressure reduced, and formed negative pressure, and this negative pressure value is delivered to low-pressure cavity, and low pressure diaphragm group 4 moves down and low pressure gas outlet 11 under this suction function.When negative pressure value in the air bag reach-100～-during 300Pa, plug 41 covers diaphragm gas outlet 27, gun pressure gas can not get into low-pressure cavity A, and gathers at diaphragm chamber B.Because the diaphragm chamber space is very little, just makes the diaphragm chamber increased pressure very soon, high pressure diaphragm group 5 is produced very big downward pressure; This pressure is much larger than top power that spring 20 makes progress; Make high pressure diaphragm group 5 downward fast offsets, and promote supply valve rod 21 and leave replenish valve gate seat 22 very soon, at this moment gun pressure gas just flows directly into high pressure chest C; Flow into air bag through high pressure gas outlet 12 again, to satisfy wearer's aerobic requirement.Second plenum system of Here it is adjuster---tonifying Qi automatically (flow >=80L/min).Along with the automatic supply of a large amount of gases, gasbag pressure raises, and negative pressure disappears.Low pressure diaphragm group 4 is left diaphragm gas outlet 27.The interior gas of diaphragm chamber B flows into low-pressure cavity A through diaphragm gas outlet 27, and it is normal that diaphragm chamber B pressure recovers, to the pressure disappearance of high pressure diaphragm group 5.Spring 20 upwards boosts supply valve rod 21 again, compresses and seal up supply valve seat 22, and the automatic tonifying Qi of high pressure chest C also stops automatically, and adjuster returns to quantitative air feed state.
The automatic tonifying Qi pressure of this adjuster can be regulated.Be preset as-100～-300Pa and automatic supply set screw 32 is locked with jackscrew 31.If tonifying Qi too early (just promptly not reached-100 automatic tonifying Qi) can be unclamped jackscrew 31 earlier automatically, automatic supply set screw 32 is upwards twisted counterclockwise; Like automatic tonifying Qi late excessively (promptly being lower than-also not tonifying Qi automatically of 300Pa), automatic supply set screw 32 is twisted downwards clockwise.Automatically tonifying Qi pressure reach-100～-the 300Pa scope in, with jackscrew 31 automatic supply set screw 32 is locked.
In addition, push manual supply button 39 downwards with hand, adjuster just carries out manual tonifying Qi with flow >=80L/min to air bag.
Above-described only is the preferred implementation of the utility model; Should be understood that; For a person skilled in the art, under the prerequisite that does not break away from the utility model structure, can also make some distortion and improvement; These also should be regarded as the protection domain of the utility model, and these can not influence effect and practical applicability that the utility model is implemented.
Claims (3)
1. the pressure flow adjuster comprises the intake valve that is connected to respiratory gas source, and being used to be connected to air bag provides the air outlet valve of breathing gas to the user, forms pressure regulating cavity between intake valve and the air outlet valve,
The low pressure that has been operably connected in said pressure regulating cavity diaphragm group and high pressure diaphragm group form high pressure chest between said high pressure diaphragm group and the intake valve, and are connected to air outlet valve through the high pressure gas outlet; Form low-pressure cavity between said low pressure diaphragm group and the high pressure diaphragm group, and be connected to air outlet valve through the low pressure gas outlet; The inner diaphragm chamber that forms of said high pressure diaphragm group;
Said intake valve comprised connect diaphragm chamber often drive gas port and the supply intake valve that is connected high pressure chest into; Said diaphragm chamber is communicated with low-pressure cavity through the diaphragm gas outlet; Said low pressure diaphragm group is provided with plug, and said low-pressure cavity is under the negative pressure state, the deformation of low pressure diaphragm group, and plug covers the diaphragm gas outlet, the supply inlet open, intake valve and high pressure chest are communicated with.
2. pressure flow adjuster according to claim 1 is characterized in that, also is provided with pressure-regulating valve, and said pressure-regulating valve comprises the regulating part that is threaded with pressure regulating cavity, is connected with elastic component between said regulating part and the plug.
3. pressure flow adjuster according to claim 2 is characterized in that, runs through in the said regulating part to be provided with an adjusting rod, and the bottom of said adjusting rod closely contacts with said elastic component, and the top of said adjusting rod protrudes in the end face of regulating part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200731910U CN202497618U (en) | 2012-03-01 | 2012-03-01 | Pressure flow regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200731910U CN202497618U (en) | 2012-03-01 | 2012-03-01 | Pressure flow regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202497618U true CN202497618U (en) | 2012-10-24 |
Family
ID=47034249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200731910U Expired - Fee Related CN202497618U (en) | 2012-03-01 | 2012-03-01 | Pressure flow regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202497618U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106267609A (en) * | 2016-08-11 | 2017-01-04 | 中国船舶重工集团公司第七0四研究所 | Meet an urgent need for boats and ships the decompressor of respiratory system |
-
2012
- 2012-03-01 CN CN2012200731910U patent/CN202497618U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106267609A (en) * | 2016-08-11 | 2017-01-04 | 中国船舶重工集团公司第七0四研究所 | Meet an urgent need for boats and ships the decompressor of respiratory system |
| CN106267609B (en) * | 2016-08-11 | 2019-04-05 | 中国船舶重工集团公司第七0四研究所 | Decompression devices for marine emergency breathing systems |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121024 Termination date: 20150301 |
|
| EXPY | Termination of patent right or utility model |