CN208719478U - A kind of respirator concealed safety valve gear - Google Patents
A kind of respirator concealed safety valve gear Download PDFInfo
- Publication number
- CN208719478U CN208719478U CN201821332467.6U CN201821332467U CN208719478U CN 208719478 U CN208719478 U CN 208719478U CN 201821332467 U CN201821332467 U CN 201821332467U CN 208719478 U CN208719478 U CN 208719478U
- 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.)
- Active
Links
Landscapes
- Safety Valves (AREA)
Abstract
The utility model discloses a kind of respirator concealed safety valve gears, on its valve body for being set to respirator pressure reducer, there is middle pressure chamber body in the respirator pressure reducer, the respirator concealed safety valve gear includes: middle crimp head, in its inner hole being connected to middle pressure chamber body for being set to valve body, there is 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 inner hole, 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 utility model relates to a kind of valve gear more particularly to a kind of relief valve devices.
Background technique
Air respiratorresuscitator is equipped as a kind of respiratory protection, be widely used to heavy industry, sewage treatment, petroleum, 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 working principle of air respiratorresuscitator is: using compressed air as air supply source, when opening bottle valve, being 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 guaranteeing air respiratorresuscitator safe handling
Condition.
The structure of safety valve in the prior art can refer to Fig. 1.As shown in Figure 1, being set to 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 freedom degree 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 opened 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 atmosphere.
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, very influence production efficiency.
Utility model content
The purpose of this utility model is to provide a kind of respirator concealed safety valve gear, the respirator is with concealed
Relief valve device 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
Concealed safety valve structure is compact, saves respirator interior space.In addition, the respirator concealed safety valve can be with
Effectively improve production efficiency.
In order to reach above-mentioned purpose of utility model, the utility model provides a kind of respirator concealed safety valve dress
It sets, is set on the valve body of respirator pressure reducer, there is in the respirator pressure reducer middle pressure chamber body, the respirator is with hidden
Concealed relief valve device includes:
Middle crimp head is set in the inner hole 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 inner hole, 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 described in the utility model concealed safety valve gear, it is used for respirator, therefore,
The case where when being applied to respirator with concealed safety valve gear with respirator, is illustrated its working principle:
When the pressure intracorporal medium pressure gas pressure of chamber is 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 pressed when the intracorporal medium pressure gas hypertonia of chamber (when being more than secure threshold) in the middle, due to medium pressure gas pressure
Greater than elastic force, under the effect of medium pressure gas pressure, sealing ring has left sealing surface, so that safety valve is in the 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.
It further, further include safety cap in respirator described in the utility model in concealed safety valve gear,
In the inner hole, and it is sheathed on middle crimp head periphery；The safety cap is set to sealing on the axial direction of middle crimp head
Between circle and 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 described in the utility model 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 described in the utility model in concealed safety valve gear, medium pressure connector
Outer surface has the stage portion of radial protrusion, and the elastic element is set to the step of stage portion on the axial direction of middle crimp head
Between face and safety cap.
Further, in respirator described in the utility model in concealed safety valve gear, medium pressure connector with
The valve body screw thread connection.
In the above technical solution, middle crimp head is tightened against on valve body and the threaded connection with valve body, so that
Obtaining the respirator has non-adjustable structure with concealed safety valve, in order to once be assembled into production assembling process
Shape, to improve production efficiency.
Further, in respirator described in the utility model in concealed safety valve gear, the elastic element packet
Include spring.
Further, in respirator described in the utility model in concealed safety valve gear, the sealing ring is O-shaped
Circle.
Respirator described in the utility model had the following advantages that compared to the prior art with concealed safety valve gear and
The utility model has the advantages that
(1) respirator described in the utility model is hidden on the inside of valve body completely with concealed safety valve structure, is kept away
Exempt from personnel misoperation and generated a possibility that unexpected, improves safety in utilization.
(2) respirator described in the utility model is crimped with concealed safety valve gear with the middle of the pressure reducer in respirator
Head combines, to save pressure reducer inner space, provides possibility for the pressure reducer increase other structures of same volume.
(3) respirator described in the utility model uses non-adjustable structure with concealed safety valve gear, is added by control
Work technique and dimensional accuracy may make the respirator once to be assembled in production assembling process with concealed safety valve gear
It forms and reaches safe valve performance and want, to greatly increase the production efficiency.
Detailed description of the invention
Fig. 1 is safety valve structure schematic diagram in the prior art.
Fig. 2 is the semi-section of respirator concealed safety valve gear described in the utility model in one embodiment
Structural schematic diagram under visual angle.
Fig. 3 is the middle crimping of respirator concealed safety valve gear described in the utility model in one embodiment
The schematic perspective view of head.
Specific embodiment
Below by specific embodiment according to the present utility model and Figure of description to respirator described in the utility model
It is further described with concealed safety valve gear, but the explanation does not constitute improper limits to the present invention.
Fig. 2 is the semi-section of respirator concealed safety valve gear described in the utility model in one embodiment
Structural schematic diagram under visual angle.Fig. 3 is respirator concealed safety valve gear described in the utility model in a kind of embodiment party
The schematic perspective view of middle crimp head under formula.
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: the middle crimp head 2 being threadedly coupled with valve body 1, sealing ring 4, elastic element 5 and safety cap 3.
Middle crimp head 2 is set in the inner hole 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 have the stage portion 6 of radial protrusion, be set to inner hole
Interior elastic element 5 is set between stage portion 6 and safety cap on the axial direction of middle crimp head 2, 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 inner hole, 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 middle 2 clearance fit of 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 in close state, and medium pressure gas I flows to user along the gas passage II in middle crimp head 2 and supplies 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
Greater than elastic force, under the effect of medium pressure gas pressure, sealing ring 4 has left sealing surface, so that safety valve is in the 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 atmosphere, to realize exhaust decompression.
With the comparison of safety valve in the prior art shown by Fig. 1 as can be seen that respirator described in the utility model is used
Concealed safety valve gear overcomes deficiency in the prior art, and have the following advantages and the utility model has the advantages that
(1) respirator described in the utility model is hidden on the inside of valve body completely with concealed safety valve structure, is kept away
Exempt from personnel misoperation and generated a possibility that unexpected, improves safety in utilization.
(2) respirator described in the utility model is crimped with concealed safety valve gear with the middle of the pressure reducer in respirator
Head combines, to save pressure reducer inner space, provides possibility for the pressure reducer increase other structures of same volume.
(3) respirator described in the utility model uses non-adjustable structure with concealed safety valve gear, is added by control
Work technique and dimensional accuracy may make the respirator once to be assembled in production assembling process with concealed safety valve gear
It forms and reaches safe valve performance and want, to greatly increase the production efficiency.
It should be noted that prior art part is not limited to present specification institute in the protection scope of the utility model
The embodiment provided, all prior arts not contradicted with the embodiment of the utility model, including but not limited to first patent
Document, first public publication, formerly openly use etc., it can all be included in the protection scope of the utility model.
In addition, in this case in the combination of each technical characteristic and unlimited this case claim documented combination or
It is combination documented by 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 embodiment of the utility model.This obvious reality
Above embodiments are not limited to novel, the similar variation or deformation made therewith are that those skilled in the art can be practical new from this
What type disclosure immediately arrived at or was easy to just to associate, it all should belong to the protection range of the utility model.
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 inner hole 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 inner hole, and is arranged to apply elastic force to sealing ring, is pressed in the elastic force resistance
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 and the air discharge duct connect
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 inner hole, 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 as claimed in claim 2 concealed safety valve gear, 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 connection.
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 |
|---|---|---|---|
| CN201821332467.6U CN208719478U (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 |
|---|---|---|---|
| CN201821332467.6U CN208719478U (en) | 2018-08-17 | 2018-08-17 | A kind of respirator concealed safety valve gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208719478U true CN208719478U (en) | 2019-04-09 |
Family
ID=65978182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821332467.6U Active CN208719478U (en) | 2018-08-17 | 2018-08-17 | A kind of respirator concealed safety valve gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208719478U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108758038A (en) * | 2018-08-17 | 2018-11-06 | 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 CN201821332467.6U patent/CN208719478U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108758038A (en) * | 2018-08-17 | 2018-11-06 | 上海宝亚安全装备股份有限公司 | A kind of respirator concealed safety valve gear |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202342720U (en) | Half-face gas mask | |
| CN206754509U (en) | A kind of explosion-proof vent valve of screw-type | |
| CN208719478U (en) | A kind of respirator concealed safety valve gear | |
| CN201329134Y (en) | Positive-pressure type air respirator gas supply valve | |
| CN206964906U (en) | Air respiratorresuscitator one liquefied gas bottle pressure-reducing valve | |
| CN108758038A (en) | A kind of respirator concealed safety valve gear | |
| WO2002011816A8 (en) | Respirators | |
| CN207286477U (en) | A kind of multipurpose list box dust proof and gas defence half face shield | |
| CN208823829U (en) | A kind of respirator pressure reducer alarm whistle device | |
| CN1946457B (en) | Secured ventilated breathing device, in particular for hostile medium | |
| US6957661B1 (en) | Valve with pressurization rate reduction device | |
| CN208287349U (en) | It is a kind of quickly to connect him with gas and rescue the connection component of breathing mask | |
| CN108969922A (en) | A kind of respirator pressure reducer alarm whistle device | |
| CN212986144U (en) | One-way valve | |
| CN209679339U (en) | Positive-pressure type respirator pressure reducer with adjustment cap | |
| CN211935226U (en) | Isolated oxygen candle oxygen generation type self-rescuer device | |
| CN203253074U (en) | Anti-lock gas bottle valve | |
| CN204667871U (en) | Positive-pressure air respirator alarm whistle assembly | |
| CN103157206A (en) | Filter device and breathing system with filter device | |
| CN210542953U (en) | Expiratory valve with environment bypass function and breathing mask | |
| CN207349444U (en) | Leak-proof liquefied petroleum gas cylinder valve | |
| CN207838054U (en) | It is a kind of for the pressure reducer of air respiratorresuscitator and the connection structure of bottle valve | |
| CN216715850U (en) | Plateau oxygen supply device | |
| CN2816560Y (en) | Aluminium alloy oxygen-valve intake-mouth sealing device | |
| CN203971225U (en) | Vapour-pressure type Protective clothes combined with cap and mask |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |