CN108758038A - A kind of respirator concealed safety valve gear - Google Patents
A kind of respirator concealed safety valve gear Download PDFInfo
- Publication number
- CN108758038A CN108758038A CN201810943070.9A CN201810943070A CN108758038A CN 108758038 A CN108758038 A CN 108758038A CN 201810943070 A CN201810943070 A CN 201810943070A CN 108758038 A CN108758038 A CN 108758038A
- Authority
- CN
- China
- Prior art keywords
- respirator
- safety valve
- sealing ring
- concealed
- valve gear
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 42
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 206010020852 Hypertonia Diseases 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0466—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with a special seating surface
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B9/00—Component parts for respiratory or breathing apparatus
- A62B9/02—Valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a kind of respirator concealed safety valve gears, are set on the valve body of respirator pressure reducer, include with middle pressure chamber body, the respirator concealed safety valve gear in the respirator pressure reducer：Middle crimp head is set in the endoporus of valve body being connected to middle pressure chamber body, has air discharge duct on the outer surface of medium pressure connector；Sealing ring is sheathed on middle crimp head periphery；Elastic element is set in the endoporus, and is arranged to apply elastic force to sealing ring, and the elastic force resists the pressure of medium pressure gas in middle pressure chamber body；Wherein, under safe valve closing state, the sealing ring is in close contact under the resilient force of elastic element with the sealing surface of valve body；Under safety valve open state, sealing ring leaves the sealing surface, so that middle pressure chamber body is connected to the air discharge duct.The respirator is safe to use with concealed safety valve gear, compact-sized, saves respirator interior space, effectively improves production efficiency.
Description
Technical field
The present invention relates to a kind of valve gear more particularly to a kind of relief valve devices.
Background technology
Air respiratorresuscitator is equipped as a kind of respiratory protection, be widely used to heavy industry, sewage disposal, oil, chemical industry,
The fields such as ship carry out fire source detecting, fire extinguishing, the disaster relief, the works such as speedily carry out rescue work and rescue for fireman and relevant staff
The operation field of the inclement conditions such as fire, hazardous materials spillage, smog and anoxic is handled in work.
The operation principle of air respiratorresuscitator is：Using compressed air as air supply source, when opening bottle valve, it is stored in gas cylinder
Pressure-air reducer assemblage is entered by bottle valve, pressure-air is depressurized after middle pressure air, to press in middle pressure air warp
Pipe, which enters, is mounted on steam supply valve on mask, and steam supply valve is required according to the breathing of user, provides middle pressure air.When people's air-breathing,
Steam supply valve is opened, and air-flow is provided；When people exhales, steam supply valve is closed, and the gas of exhalation is discharged through the outlet valve on mask, when stopping
When only exhaling, outlet valve is closed, and prepares air-breathing next time, this completes a breath cycle processes.
Pith of the safety valve as pressure reducer in air respiratorresuscitator is the necessity for ensureing air respiratorresuscitator safe handling
Condition.
The structure of safety valve in the prior art can be with reference chart 1.As shown in Figure 1, the safety valve packet in pressure reducer
The seal head 1 ' of the middle extrusion mouth by sealing valve body of safety valve 5 ' is included, and seal head 1 ' is limited on middle extrusion mouth and is limited
The safety-valve 2 ' of its degree of freedom is constituted.And the elastic component 3 ' of sealed pressure is also provided on safety-valve 2 ', elastic component 3 '
Top is the gland 4 ' being attached with valve body of safety valve 5 '.
When the gas pressure in the middle pressure chamber body I of pressure reducer is excessively high, seal head 1 ' is open-top by gas pressure, at this time safety
Valve 2 ' is jacked up upwards together with elastic component 3 ', then safety valve in the prior art is opened, and crosses hyperbar along arrow side
To flowing to air.
It can thus be seen that there is shortcomings as described below for safety valve in the prior art：
(1) gland 4 ' is exposed on the outside of pressure reducer, thus, it is easy accidentally to be touched by people, and then lead to maloperation and influence to pacify
The use of full valve so that there are security risks for safety valve in the prior art.
(2) safety valve of the prior art occupies most suitable space due to the needs of valve body of safety valve 5 ' so that safety
Valve overall volume is larger, affects the layout of other components in respirator.
(3) safety valve of the prior art needs to adjust and test repeatedly in process of production, extremely influences production efficiency.
Invention content
The purpose of the present invention is to provide a kind of respirator concealed safety valve gear, the respirator concealed safeties
Valve gear can be hidden in completely on the inside of valve body, avoid and accident occurs because accidentally being touched by people, while the respirator is used and hidden
Formula relief valve device is compact-sized, saves respirator interior space.In addition, the respirator concealed safety valve can be effective
Improve production efficiency.
In order to reach foregoing invention purpose, the present invention provides a kind of respirator concealed safety valve gear, settings
In on the valve body of respirator pressure reducer, there is middle pressure chamber body, the respirator concealed safety in the respirator pressure reducer
Valve gear includes：
Middle crimp head is set in the endoporus of valve body being connected to middle pressure chamber body, has on the outer surface of medium pressure connector
There is air discharge duct；
Sealing ring is sheathed on middle crimp head periphery；
Elastic element is set in the endoporus, and is arranged to apply elastic force to sealing ring, and the elastic force is resisted
The pressure of medium pressure gas in middle pressure chamber body；
Wherein, under safe valve closing state, the sealing ring is close with valve body under the resilient force of elastic element
Cover is in close contact；Under safety valve open state, sealing ring leaves the sealing surface, so that middle pressure chamber body and the air discharge duct
Connection.
For respirator of the present invention concealed safety valve gear, it is used for respirator, therefore, to exhale
The case where when haustorium is applied to respirator with concealed safety valve gear, illustrates its operation principle：
When pressing the medium pressure gas pressure in cavity normal in the middle (when being less than secure threshold), medium pressure gas pressure does not surpass
Elastic force is crossed, at this point, sealing ring is in close contact by the sealing surface of elastic acting force and valve body, thus, arranged at safety valve is in closing
State.
And press in the middle when the medium pressure gas hypertonia in cavity (when being more than secure threshold), due to medium pressure gas pressure
More than elastic force, under the effect of medium pressure gas pressure, sealing ring has left sealing surface so that arranged at safety valve in open state, this
When, middle pressure chamber body is connected to the air discharge duct in middle crimp head, and a part of gas of medium pressure gas enters air discharge duct and then flows to big
Gas.
It should be pointed out that the secure threshold in the above process can be determined by the elastic force of elastic element.
Further, further included safety cap, be set to in concealed safety valve gear in respirator of the present invention
In the endoporus, and it is sheathed on middle crimp head periphery；The safety cap on the axial direction of middle crimp head be set to sealing ring and
Between elastic element.
In some embodiments, safety cap can be with middle crimp head clearance fit, so that safety cap is only along middle pressure
The axial direction of connector slides.
Further, in respirator of the present invention in concealed safety valve gear, the sealing ring is set to safety
Cap and the outer wall of middle crimp head are formed by groove.
Further, in respirator of the present invention in concealed safety valve gear, the appearance of medium pressure connector
Face have radial protrusion stage portion, the elastic element on the axial direction of middle crimp head set on stage portion step surface and
Between safety cap.
Further, in respirator of the present invention in concealed safety valve gear, medium pressure connector with it is described
Valve body screw thread connects.
In the above technical solution, middle crimp head is tightened against by the threaded connection with valve body on valve body, so that
Obtain the respirator has non-adjustable structure with concealed safety valve, in order to be once assembled into producing assembling process
Shape, to improve production efficiency.
Further, in respirator of the present invention in concealed safety valve gear, the elastic element includes bullet
Spring.
Further, in respirator of the present invention in concealed safety valve gear, the sealing ring is O-ring.
Respirator of the present invention is had the following advantages that and beneficial compared to the prior art with concealed safety valve gear
Effect：
(1) respirator of the present invention is hidden in concealed safety valve structure on the inside of valve body completely, is avoided
Personnel's maloperation and generate unexpected possibility, improve safety in utilization.
(2) the middle crimp head knot of respirator of the present invention concealed safety valve gear and the pressure reducer in respirator
It closes, to save pressure reducer inner space, possibility is provided for the pressure reducer increase other structures of same volume.
(3) respirator of the present invention uses non-adjustable structure with concealed safety valve gear, and work is processed by control
Skill and dimensional accuracy may make respirator molding assembly in producing assembling process with concealed safety valve gear
And reach safe valve performance and want, to greatly increase the production efficiency.
Description of the drawings
Fig. 1 is safety valve structure schematic diagram in the prior art.
Fig. 2 is a kind of semi-section visual angle of the respirator concealed safety valve gear of the present invention under embodiment
Under structural schematic diagram.
Fig. 3 is a kind of middle crimp head of the respirator concealed safety valve gear of the present invention under embodiment
Dimensional structure diagram.
Specific implementation mode
Below will according to a particular embodiment of the invention and Figure of description to respirator of the present invention with concealed
Relief valve device is further described, but the explanation does not constitute improper limitations of the present invention.
Fig. 2 is a kind of semi-section visual angle of the respirator concealed safety valve gear of the present invention under embodiment
Under structural schematic diagram.Fig. 3 be respirator concealed safety valve gear of the present invention under a kind of embodiment in
The dimensional structure diagram of crimp head.
As shown in Fig. 2, Fig. 3 is simultaneously combined if necessary, and in the present embodiment, respirator concealed safety valve gear,
It is set on the valve body 1 of respirator pressure reducer, has middle pressure chamber body I in respirator pressure reducer.Wherein, respirator is with concealed
Relief valve device includes：Middle crimp head 2, sealing ring 4, elastic element 5 and the safety cap 3 being threadedly coupled with valve body 1.
Middle crimp head 2 is set in the endoporus of valve body 1 being connected to middle pressure chamber body I, has row on the outer surface of middle crimp head 2
Air drain 7.Also, in the present embodiment, the outer surface of middle crimp head 2 can be set to endoporus with the stage portion 6 of radial protrusion
Interior elastic element 5 is set on the axial direction of middle crimp head 2 between stage portion 6 and safety cap, and elastic element 5 is arranged to
Apply elastic force to sealing ring 4, elastic force resists the pressure of medium pressure gas in middle pressure chamber body I.In the present embodiment, elasticity member
Part 5 includes spring.
Safety cap 3 is also set in endoporus, and is sheathed on the periphery of middle crimp head 2, and safety cap 3 is in the axial direction side of middle crimp head
It is set between sealing ring 4 and elastic element 5 upwards, safety cap 3 and 2 clearance fit of middle crimp head, it can be only along the axis of middle crimp head 2
It is slided to direction.
Sealing ring 4 is sheathed on the periphery of middle crimp head 2, and it is set to safety cap 3 and the outer wall of middle crimp head 2 is formed
Groove in, for sealing the medium pressure gas in middle pressure chamber body I.In the present embodiment, sealing ring 4 is O-ring.
Wherein, under safe valve closing state, sealing of the sealing ring 4 under the resilient force of elastic element 5 with valve body 1
Face is in close contact；Under safety valve open state, sealing ring 4 leaves sealing surface, so that middle pressure chamber body I is connected to air discharge duct 7.
That is, in the middle press cavity in I medium pressure gas pressure it is normal when (when being less than secure threshold), in calm the anger
Body pressure is less than elastic force, at this point, sealing ring 4 is in close contact by the sealing surface of elastic acting force and valve body, thus, safety
Valve is closed, and medium pressure gas I flows to user along the gas passage II in middle crimp head 2 and supplied to it.
When pressing the medium pressure gas hypertonia in cavity I in the middle (when being more than secure threshold), due to medium pressure gas pressure
More than elastic force, under the effect of medium pressure gas pressure, sealing ring 4 has left sealing surface so that arranged at safety valve in open state, this
When, middle pressure chamber body I is connected to the air discharge duct 7 in middle crimp head 2, and a part of gas of medium pressure gas enters air discharge duct 7, Jin Erliu
To air, to realize exhaust decompression.
It can be seen that respirator of the present invention with the safety valve in the prior art comparison shown by Fig. 1 and use and hide
Formula relief valve device overcomes deficiency in the prior art, and has the following advantages and advantageous effect：
(1) respirator of the present invention is hidden in concealed safety valve structure on the inside of valve body completely, is avoided
Personnel's maloperation and generate unexpected possibility, improve safety in utilization.
(2) the middle crimp head knot of respirator of the present invention concealed safety valve gear and the pressure reducer in respirator
It closes, to save pressure reducer inner space, possibility is provided for the pressure reducer increase other structures of same volume.
(3) respirator of the present invention uses non-adjustable structure with concealed safety valve gear, and work is processed by control
Skill and dimensional accuracy may make respirator molding assembly in producing assembling process with concealed safety valve gear
And reach safe valve performance and want, to greatly increase the production efficiency.
It should be noted that prior art part is not limited to given by present specification in protection scope of the present invention
Embodiment, all prior arts not contradicted with the solution of the present invention, including but not limited to first patent document, formerly
Public publication, formerly openly use etc., it can all be included in protection scope of the present invention.
In addition, combination recorded in the combination of each technical characteristic and unlimited this case claim in this case or
It is the combination recorded in specific embodiment, all technical characteristics that this case is recorded can be freely combined in any way
Or combine, unless generating contradiction between each other.
It is also to be noted that embodiment enumerated above is only specific embodiments of the present invention.The obvious present invention is not
It is confined to above example, the similar variation or deformation made therewith are that those skilled in the art can be from present disclosure
It immediately arrives at or is easy to just to associate, be within the scope of protection of the invention.
Claims (7)
1. a kind of respirator concealed safety valve gear, is set on the valve body of respirator pressure reducer, the respirator subtracts
There is middle pressure chamber body, which is characterized in that the respirator concealed safety valve gear includes in depressor：
Middle crimp head is set in the endoporus of valve body being connected to middle pressure chamber body, has row on the outer surface of medium pressure connector
Air drain；
Sealing ring is sheathed on middle crimp head periphery；
Elastic element is set in the endoporus, and is arranged to apply elastic force to sealing ring, and the elastic force is pressed in resisting
The pressure of medium pressure gas in cavity；
Wherein, under safe valve closing state, the sealing ring under the resilient force of elastic element with the sealing surface of valve body
It is in close contact；Under safety valve open state, sealing ring leaves the sealing surface, so that middle pressure chamber body connects with the air discharge duct
It is logical.
2. respirator as described in claim 1 concealed safety valve gear, which is characterized in that further include safety cap, set
In in the endoporus, and it is sheathed on middle crimp head periphery；The safety cap is set to sealing ring on the axial direction of middle crimp head
Between elastic element.
3. respirator as claimed in claim 2 concealed safety valve gear, which is characterized in that the sealing ring is set to safety
Cap and the outer wall of middle crimp head are formed by groove.
4. respirator concealed safety valve gear as claimed in claim 2, which is characterized in that the appearance of medium pressure connector
Face have radial protrusion stage portion, the elastic element on the axial direction of middle crimp head set on stage portion step surface and
Between safety cap.
5. respirator as claimed in claim 4 concealed safety valve gear, which is characterized in that medium pressure connector with it is described
Valve body screw thread connects.
6. respirator as described in claim 1 concealed safety valve gear, which is characterized in that the elastic element includes bullet
Spring.
7. respirator as described in claim 1 concealed safety valve gear, which is characterized in that the sealing ring is O-ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810943070.9A CN108758038A (en) | 2018-08-17 | 2018-08-17 | A kind of respirator concealed safety valve gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810943070.9A CN108758038A (en) | 2018-08-17 | 2018-08-17 | A kind of respirator concealed safety valve gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108758038A true CN108758038A (en) | 2018-11-06 |
Family
ID=63967136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810943070.9A Pending CN108758038A (en) | 2018-08-17 | 2018-08-17 | A kind of respirator concealed safety valve gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108758038A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110701353A (en) * | 2019-09-12 | 2020-01-17 | 凯迈（洛阳）气源有限公司 | Oxygen supply pressure reducing valve for parachuting |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB878727A (en) * | 1959-04-16 | 1961-10-04 | Kidde Walter Co Ltd | Improvements in or relating to breathing apparatus |
| CN2300773Y (en) * | 1997-01-17 | 1998-12-16 | 王挺 | Safety valve |
| US20070034263A1 (en) * | 2003-10-31 | 2007-02-15 | Mueller Stephan | Valve, especially a gas safety valve |
| CN101289135A (en) * | 2008-06-04 | 2008-10-22 | 陈岳荣 | Respiration valve |
| US20120145261A1 (en) * | 2010-12-08 | 2012-06-14 | General Electric Company | Pneumatic vibration dampening device |
| CN104864134A (en) * | 2015-05-19 | 2015-08-26 | 罗达莱克斯阀门(上海)有限公司 | Safety valve |
| CN205198734U (en) * | 2015-12-17 | 2016-05-04 | 重庆华渝电气集团有限公司 | Malleation air relief pressure valve for respirator |
| CN105605243A (en) * | 2016-04-01 | 2016-05-25 | 成都科盛石油科技有限公司 | Pressure-regulation pilot mechanism used in pneumatic system |
| CN107237906A (en) * | 2017-07-19 | 2017-10-10 | 上海德尔格医疗器械有限公司 | A kind of air-channel system of Pressure Relief Valve and medicine equipment |
| CN108057188A (en) * | 2017-12-29 | 2018-05-22 | 上海宝亚安全装备股份有限公司 | A kind of outlet valve of adjustable Opening pressure |
| CN108087597A (en) * | 2017-12-18 | 2018-05-29 | 捷锐企业(上海)有限公司 | A kind of medical gas safety valve |
| CN208719478U (en) * | 2018-08-17 | 2019-04-09 | 上海宝亚安全装备股份有限公司 | A kind of respirator concealed safety valve gear |
-
2018
- 2018-08-17 CN CN201810943070.9A patent/CN108758038A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB878727A (en) * | 1959-04-16 | 1961-10-04 | Kidde Walter Co Ltd | Improvements in or relating to breathing apparatus |
| CN2300773Y (en) * | 1997-01-17 | 1998-12-16 | 王挺 | Safety valve |
| US20070034263A1 (en) * | 2003-10-31 | 2007-02-15 | Mueller Stephan | Valve, especially a gas safety valve |
| CN101289135A (en) * | 2008-06-04 | 2008-10-22 | 陈岳荣 | Respiration valve |
| US20120145261A1 (en) * | 2010-12-08 | 2012-06-14 | General Electric Company | Pneumatic vibration dampening device |
| CN104864134A (en) * | 2015-05-19 | 2015-08-26 | 罗达莱克斯阀门(上海)有限公司 | Safety valve |
| CN205198734U (en) * | 2015-12-17 | 2016-05-04 | 重庆华渝电气集团有限公司 | Malleation air relief pressure valve for respirator |
| CN105605243A (en) * | 2016-04-01 | 2016-05-25 | 成都科盛石油科技有限公司 | Pressure-regulation pilot mechanism used in pneumatic system |
| CN107237906A (en) * | 2017-07-19 | 2017-10-10 | 上海德尔格医疗器械有限公司 | A kind of air-channel system of Pressure Relief Valve and medicine equipment |
| CN108087597A (en) * | 2017-12-18 | 2018-05-29 | 捷锐企业(上海)有限公司 | A kind of medical gas safety valve |
| CN108057188A (en) * | 2017-12-29 | 2018-05-22 | 上海宝亚安全装备股份有限公司 | A kind of outlet valve of adjustable Opening pressure |
| CN208719478U (en) * | 2018-08-17 | 2019-04-09 | 上海宝亚安全装备股份有限公司 | A kind of respirator concealed safety valve gear |
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| Title |
|---|
| 朱黎达;余龙腾;: "一种新型供气阀在正压式消防空气呼吸器中的应用", 消防技术与产品信息, no. 09, 15 September 2016 (2016-09-15), pages 58 - 59 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110701353A (en) * | 2019-09-12 | 2020-01-17 | 凯迈（洛阳）气源有限公司 | Oxygen supply pressure reducing valve for parachuting |
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