CN108969922A - A kind of respirator pressure reducer alarm whistle device - Google Patents
A kind of respirator pressure reducer alarm whistle device Download PDFInfo
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- CN108969922A CN108969922A CN201810942283.XA CN201810942283A CN108969922A CN 108969922 A CN108969922 A CN 108969922A CN 201810942283 A CN201810942283 A CN 201810942283A CN 108969922 A CN108969922 A CN 108969922A
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- alarm
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 65
- 238000007789 sealing Methods 0.000 claims abstract description 62
- 238000005336 cracking Methods 0.000 claims abstract description 11
- 206010008469 Chest discomfort Diseases 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims abstract description 5
- 238000010586 diagram Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000033748 Device issues Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000036316 preload Effects 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
-
- 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
- A62B9/006—Indicators or warning devices, e.g. of low pressure, contamination
-
- 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
- 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
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- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The invention discloses a kind of respirator pressure reducer alarm whistle devices, on its valve body for being set to respirator pressure reducer, there is middle pressure chamber body and high-pressure chamber, respirator pressure reducer alarm whistle device includes: piston, sealing element, thimble, pressure cap, alarm whistle body, alarm whistle core, elastic element and medium pressure gas slot in respirator pressure reducer.Wherein, air channel on thimble outer circumference surface is connected with the air flue of alarm whistle body and alarm whistle core, when the intracorporal high-pressure gas pressure of high pressure chest is greater than alarm whistle cracking pressure, piston is in containment station, piston by high-pressure gas seal in high-pressure chamber, and sealing element cutting medium pressure gas slot and air channel communication path；When the intracorporal high-pressure gas pressure of high pressure chest is less than alarm whistle cracking pressure, the pretightning force of elastic element pushes pressure cap and thimble, when being pushed into piston downwards to open station, the upper surface of piston is left in the lower end surface of sealing element, to open the communication path of medium pressure gas slot and air channel.
Description
Technical field
The present invention relates to a kind of warning device more particularly to a kind of warning devices for respirator pressure reducer.
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.Air respiratorresuscitator is mainly used for fireman and relevant staff carries out fire source detecting, fire extinguishing, the disaster relief, robs
The severe operation fields such as fire, hazardous materials spillage, smog and anoxic are handled in the work such as danger and rescue.
Currently, the working principle of air respiratorresuscitator are as follows: using compressed air as air supply source, when opening bottle valve, be stored in
High pressure gas in gas cylinder enters reducer assemblage by bottle valve, and high pressure gas is depressurized as medium pressure gas, medium pressure gas warp
Middle pressure pipe enters the steam supply valve being mounted on mask, and steam supply valve is required according to the breathing of user, provides medium pressure gas amount.When making
When user's air-breathing, steam supply valve is opened, and medium pressure gas is flowed into be sucked for user；When the wearer exhales the air, steam supply valve is closed, middle pressure
Gas can not flow into, and the gas of user's exhalation is then discharged through the outlet valve on mask, and when stopping exhaling, outlet valve is closed
It closes, prepares air-breathing next time, this completes a breath cycle processes.
Alarm whistle is used to guarantee that air respiratorresuscitator to be used safely as the pith in air respiratorresuscitator.And such as Fig. 1
Shown, in existing air respiratorresuscitator 1, the setting of alarm whistle 11 hangs over the left front of user in high pressure pipe end, use.One
It when denier user runs, since the alarm whistle 11 of pressure duct end is heavier, is very easy to generate whipping situation, to influence to make
The use of user even in some cases can impact the safety in utilization of user.In addition, existing air is exhaled
Alarm whistle 11 in haustorium 1 is blowed by high pressure gas, thus, once the sealing structure of alarm whistle is abnormal, the gas leaked out
Body is high pressure gas, and risk is larger, be unfavorable for user using safe.
Summary of the invention
The purpose of the present invention is to provide a kind of respirator pressure reducer alarm whistle device, respirator pressure reducer alarms
Whistle device is integrated on the valve body of respirator pressure reducer, is concentrated on to avoid the respirator pressure reducer with the weight of alarm whistle device
User front and generate whipping.In addition, the respirator pressure reducer is blowed with alarm whistle device by medium pressure gas, avoid existing
The security risk as caused by using high pressure gas in technology.
In order to achieve the above object of the invention, the present invention provides a kind of respirator pressure reducer alarm whistle device, settings
In on the valve body of respirator pressure reducer, there is middle pressure chamber body and high-pressure chamber in the respirator pressure reducer, the respirator subtracts
Depressor alarm whistle device includes:
Piston is set to the exit of high-pressure chamber in the valve body, and the piston can be in the intracorporal high pressure of high pressure chest
It is slided under the action of gas along its axial direction, to be slided between containment station and opening station；
Sealing element is fixedly installed relative to valve body, and is set to the top of the valve body inner piston, and the sealing element has
Central through hole；
Thimble is set in the central through hole of the sealing element, the lower end surface of the thimble and the upper-end contact of piston, institute
It states and offers air channel on the outer circumference surface of thimble；
Pressure cap is set in the central through hole of the sealing element, and is pressed and be set on the upper surface of the thimble；
Alarm whistle body is connect with the valve body；
Alarm whistle core is set in the alarm whistle body；
Elastic element is set between the alarm whistle core and pressure cap；
Medium pressure gas slot is set in the valve body, and one end of medium pressure gas grooves is connected to medium pressure cavity,
The other end extends to the lower end surface of sealing element；
Wherein, the air channel is connected with the air flue of alarm whistle body and alarm whistle core, when the intracorporal high pressure gas of high pressure chest
When pressure is greater than alarm whistle cracking pressure, the piston is in containment station, piston by high-pressure gas seal in high-pressure chamber,
And the lower end surface of sealing element is pressed on the upper surface of piston, to cut off the access of the air channel of medium pressure gas slot and thimble
Diameter；When the intracorporal high-pressure gas pressure of high pressure chest is less than alarm whistle cracking pressure, the pretightning force of the elastic element is by pressure cap
It is pushed with thimble, when piston is pushed into open station downwards, the upper surface of piston is left in the lower end surface of sealing element, in opening
Press the communication path of the air channel of gas grooves and thimble.
Further, in respirator pressure reducer of the present invention in alarm whistle device, the excircle of the sealing element
Face is equipped with external screw thread, to connect with the valve body screw thread.
Further, in respirator pressure reducer of the present invention in alarm whistle device, the alarm whistle body with it is described
Valve body screw thread connection, to adjust the amount of feeding of the alarm whistle body relative to valve body, to adjust the pretightning force of the elastic element.
In above scheme, by adjusting the amount of feeding of the alarm whistle body relative to valve body, to adjust the preload of elastic element
Power, and then the size of alarm whistle cracking pressure can be adjusted more conveniently.
Further, in respirator pressure reducer of the present invention in alarm whistle device, the upper surface of the thimble is in
Dome-shaped, the lower end surface of the pressure cap have the cone tank of indent, and the cone tank is pressed on the dome-shaped upper end of the thimble
On face.
In above scheme, dome-shaped is set by the upper surface of thimble, the lower end surface of pressure cap is set as the cone tank of indent,
And cone tank is pressed on the dome-shaped upper surface of thimble, so that in the same of conduction axial force between thimble and pressure cap
When, pressure cap remains at center.
Further, in respirator pressure reducer of the present invention in alarm whistle device, the piston has nonmetallic
Part, when the lower end surface of sealing element is pressed on the upper surface of piston, the lower end surface of sealing element is pressed on the non-metallic part
On.
In above scheme, since piston is in containment station and when opening Switch of working position, the lower end surface of sealing element and piston
Upper surface frequently contacts, and be easy to cause workpiece damage, therefore, uses durability degree to improve, workpiece damage is avoided, some excellent
In the embodiment of choosing, piston setting had into non-metallic part, and when the lower end surface of sealing element is pressed on the upper end of piston
When on face, the lower end surface of sealing element is pressed on the non-metallic part.
Further, in respirator pressure reducer of the present invention in alarm whistle device, the alarm whistle core and alarm
The interference fit connection of whistle body.
In order to enable the gas outlet of alarm whistle core and alarm whistle body is same direction, in some preferred embodiments,
Alarm whistle core and alarm whistle body interference fit can be connected, so as to be fitted together in the part production phase.This
Outside, it is connected using interference fit, reduces the difficulty of subsequent assembly, be conducive to improve subsequent when being assemblied in respirator pressure reducer
Assembly efficiency.
Further, in respirator pressure reducer of the present invention in alarm whistle device, in order to improve the airtight of device
Property, especially high pressure chest intracorporal air-tightness is equipped with O-ring between the piston and valve body.
Further, in respirator pressure reducer of the present invention in alarm whistle device, in order to improve the airtight of device
Property, especially high pressure chest intracorporal air-tightness is equipped with retaining ring between the piston and valve body.
Further, in respirator pressure reducer of the present invention in alarm whistle device, the sealing element and valve body it
Between be equipped with O-ring, to prevent the intracorporal gas of middle pressure chamber from revealing in the gap between sealing element and valve body.
Further, in respirator pressure reducer of the present invention in alarm whistle device, the elastic element includes bullet
Spring.
Respirator pressure reducer of the present invention is had the following advantages that and beneficial compared to the prior art with alarm whistle device
Effect:
Respirator pressure reducer of the present invention controls alarm whistle cracking pressure using high pressure gas with alarm whistle device, together
When respirator pressure reducer alarm whistle device blowed by medium pressure gas.Due to respirator pressure reducer alarm whistle of the present invention
Device is blowed using medium pressure gas, thus, once leakage or rupture, gas leakage occur for device internal structure such as alarm whistle body
Or the flow of rupture is smaller, the alarm whistle that safety uses high pressure gas to blow compared to the prior art increases.
In addition, respirator pressure reducer of the present invention is integrated in pressure reducer valve body with alarm whistle device, thus, weight collection
In in user back, and be not easy whipping easily, the alarm whistle for avoiding the prior art is hung on front and is easy whipping and causes to make
With inconvenient situation.
Detailed description of the invention
Fig. 1 shows the situation that alarm whistle in the prior art is set in air respiratorresuscitator.
Fig. 2 be respirator pressure reducer alarm whistle device of the present invention in one embodiment in sealing work
Structural schematic diagram when position.
Show to Fig. 3 partial enlargement the structure in Fig. 3 at A.
Fig. 4 is the knot of the sealing element of respirator pressure reducer alarm whistle device of the present invention in one embodiment
Structure schematic diagram.
Fig. 5 be respirator pressure reducer alarm whistle device of the present invention in one embodiment in open work
Structural schematic diagram when position.
Show to Fig. 6 partial enlargement the structure in Fig. 5 at B.
Specific embodiment
It below will according to a particular embodiment of the invention and Figure of description uses respirator pressure reducer of the present invention
Alarm whistle device is further described, but the explanation does not constitute improper limitations of the present invention.
Fig. 2 be respirator pressure reducer alarm whistle device of the present invention in one embodiment in sealing work
Structural schematic diagram when position.
As shown in Fig. 2, in the present embodiment, with middle pressure chamber body I and high-pressure chamber II in respirator pressure reducer, and
Respirator pressure reducer alarm whistle device is provided on the valve body 21 of respirator pressure reducer, which is filled with alarm whistle
Setting includes: piston 22, and piston 22 is set to the exit of high-pressure chamber II in valve body 21, and piston 22 can be in high-pressure chamber II
It is slided under the action of high pressure gas along its axial direction, to be slided between containment station and opening station；Sealing element 25, sealing
Part 25 is fixedly installed relative to valve body 21, and in the present embodiment, the outer circumference surface of sealing element 25 is equipped with external screw thread, thus with
Valve body 21 is threadedly coupled, and sealing element 25 is set to the top of 21 inner piston 22 of valve body.Certainly in some other embodiments
In, sealing element 25 can also be fixedly installed in such a way that other skilled in the art knows with valve body 21.In addition, combining figure
2 and Fig. 4 can be seen that sealing element 25 with central through hole 250.In addition, the lower end bottom surface in sealing element 25 offers slot 252,
Slot 252 is connected to middle pressure chamber body I, so that the medium pressure gas in middle pressure chamber body I can circulate herein, and in 25 lower end of sealing element
With the sealing surface 251 with 22 upper end face contact of piston, when being in containment station, sealing surface 252 is pressed in 22 upper end of piston
On face, thus sealing gas.
In addition, respirator pressure reducer alarm whistle device further includes thimble 27, the center that thimble 27 is set to sealing element 25 is logical
In hole 250, the lower end surface of thimble 27 and the upper-end contact of piston 22；Pressure cap 28, pressure cap 28 are set to the central through hole of sealing element 25
In 250, and presses and be set on the upper surface of thimble 27；Alarm whistle body 211, alarm whistle body 211 are connect with valve body 21；Alarm whistle core
210, alarm whistle core 210 is set in alarm whistle body 211.In the present embodiment, in order to enable alarm whistle core 210 and alarm whistle body
211 gas outlet is same direction, and in order to reduce the difficulty of subsequent assembly, is conducive to improve and subsequent is assemblied in respirator
Assembly efficiency when pressure reducer, alarm whistle core 210 and alarm whistle body 211 can be using interference fit connections.In addition, in alarm whistle
Elastic element 29 is additionally provided between core 210 and pressure cap 28, in the present embodiment, elastic element 29 can be spring.It needs to refer to
Out, in order to enable alarm whistle cracking pressure is within the scope of 5.5 ± 0.5MPa, in the present embodiment, alarm whistle body 211 with
Using being threadedly coupled between valve body 21, to adjust the amount of feeding of the alarm whistle body 211 relative to valve body 21, to adjust elastic element
29 pretightning force, to realize the adjusting of final alarm whistle cracking pressure.
In addition, avoiding the high pressure in high-pressure chamber II to improve the air-tightness of respirator pressure reducer alarm whistle device
Into in device using security issues occur for gas leakage, and the first sealing ring 26 and gear are equipped between piston 22 and valve body 21
Circle 24, the first sealing ring 26 are O-ring.And the feelings of false alarm occur in order to avoid the medium pressure gas leakage in middle pressure chamber body I
Condition is equipped with the second sealing ring 23 between sealing element 25 and valve body 21, and the second sealing ring 23 can be O-ring.
Show to Fig. 3 partial enlargement the structure in Fig. 3 at A.Fig. 4 is respirator pressure reducer of the present invention alarm
The structural schematic diagram of the sealing element of whistle device in one embodiment.
When being in containment station to the alarm whistle device of the respirator pressure reducer in present embodiment in conjunction with Fig. 2 to Fig. 4
Structure and its working principle are described in detail.
As shown in figure 3, Fig. 2 and Fig. 4 is simultaneously combined if necessary, when the high pressure gas in high-pressure chamber II is opened greater than alarm whistle
When opening pressure, high pressure gas pushes up piston 22, and the metal part 222 of piston 22 is by thimble 27 and pressure cap 28 and elasticity
Element 29 jacks up upwards, and the non-metallic part 221 of piston 22 is compressed to form sealing by the lower end of sealing element 25, i.e. sealing surface 251
It is pressed at the non-metallic part 221 of piston 22.At this point, piston 22 is in containment station, piston 22 exists high-pressure gas seal
In high-pressure chamber II, and the medium pressure gas in middle pressure chamber body I along direction shown in arrow through the middle pressure chamber body I in valve body 21, enter
In the slot 252 of the middle pressure chamber body I sealing element 25 being connected to, but central through hole 250 can not be entered by sealing surface 251, thus
Gas passage can not be formed.
With further reference to Fig. 3 as can be seen that thimble 27 and 25 clearance fit of sealing element, thimble 27 can be along sealing element 25
Central through hole 250 slides axially, and one end end face of thimble 27 is plane, contacts with the metal part 222 of piston 22, for conducting
Axial force, and the other end face of thimble 27 is dome-shaped, the cone tank of indent possessed by the lower end surface with pressure cap 28 connects
Touching, that is to say, that cone tank is pressed on the end face of the dome-shaped of thimble, and such setting is so that thimble 27 is conducting axial force
While, pressure cap 28 can be made to be maintained at center.
Fig. 5 be respirator pressure reducer alarm whistle device of the present invention in one embodiment in open work
Structural schematic diagram when position.
Show to Fig. 6 partial enlargement the structure in Fig. 5 at B.
As shown in figure 5, Fig. 6 and Fig. 4 is simultaneously combined if necessary, when the high pressure gas in high-pressure chamber II is opened less than alarm whistle
When opening pressure, the pretightning force of elastic element 29 pushes pressure cap 28 and thimble 27, and piston 22 is pushed into downwards to open station.This
When, the sealing surface 251 of sealing element 25 has left the non-metallic part 221 of piston 22, as a result, the medium pressure gas in middle pressure chamber body I
Central through hole 250 is flowed into, that is to say, that medium pressure gas is along arrow direction shown in fig. 6, from the outer circumference surface for being set to thimble 27
Air channel 271 flow up, continue up flowing through the gap that pressure cap 28 and sealing element 26 are shown in, and flow into alarm whistle body 211
In the air flue of alarm whistle core 210, atmosphere finally is flowed in the exit of alarm whistle body 211, i.e. respirator pressure reducer is alarmed
Whistle device issues alarm.
In conclusion respirator pressure reducer of the present invention is had the advantages that with alarm whistle device
(1) the respirator pressure reducer described in controls alarm whistle cracking pressure using high pressure gas with alarm whistle device, simultaneously
Respirator pressure reducer alarm whistle device is blowed by medium pressure gas.Since respirator pressure reducer of the present invention is filled with alarm whistle
Set and blowed using medium pressure gas, thus, once device internal structure for example alarm whistle body occur leakage or rupture, gas leakage or
The flow of rupture is smaller, and the alarm whistle that safety uses high pressure gas to blow compared to the prior art increases.
(2) the respirator pressure reducer described in is integrated in pressure reducer valve body with alarm whistle device, thus, weight concentrate on using
Person back, and be not easy whipping easily, the alarm whistle for avoiding the prior art be hung on front and be easy whipping cause it is inconvenient for use
Situation.
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, 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 embodiments of the present invention.The obvious present invention is not
Above embodiments are confined to, 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 (10)
1. a kind of respirator pressure reducer alarm whistle device, is set on the valve body of respirator pressure reducer, the respirator subtracts
There is middle pressure chamber body and high-pressure chamber, which is characterized in that the respirator pressure reducer alarm whistle device includes: in depressor
Piston is set to the exit of high-pressure chamber in the valve body, and the piston can be in the intracorporal high pressure gas of high pressure chest
Under the action of along its axial direction slide, with containment station and open station between slide；
Sealing element is fixedly installed relative to valve body, and is set to the top of the valve body inner piston, and the sealing element has center
Through-hole；
Thimble is set in the central through hole of the sealing element, the lower end surface of the thimble and the upper-end contact of piston, the top
Air channel is offered on the outer circumference surface of needle；
Pressure cap is set in the central through hole of the sealing element, and is pressed and be set on the upper surface of the thimble；
Alarm whistle body is connect with the valve body；
Alarm whistle core is set in the alarm whistle body；
Elastic element is set between the alarm whistle core and pressure cap；
Medium pressure gas slot is set in the valve body, and one end of medium pressure gas grooves is connected to medium pressure cavity, another
End extends to the lower end surface of sealing element；
Wherein, the air channel is connected with the air flue of alarm whistle body and alarm whistle core, when the intracorporal high-pressure gas pressure of high pressure chest
When greater than alarm whistle cracking pressure, the piston is in containment station, piston by high-pressure gas seal in high-pressure chamber, and it is close
The lower end surface of sealing is pressed on the upper surface of piston, to cut off the communication path of the air channel of medium pressure gas slot and thimble；When
When the intracorporal high-pressure gas pressure of high pressure chest is less than alarm whistle cracking pressure, the pretightning force of the elastic element is by pressure cap and thimble
It pushes, when piston is pushed into open station downwards, the upper surface of piston is left in the lower end surface of sealing element, to open medium pressure gas
The communication path of the air channel of slot and thimble.
2. respirator pressure reducer alarm whistle device as described in claim 1, which is characterized in that the excircle of the sealing element
Face is equipped with external screw thread, to connect with the valve body screw thread.
3. respirator pressure reducer alarm whistle device as described in claim 1, which is characterized in that the alarm whistle body with it is described
Valve body screw thread connection, to adjust the amount of feeding of the alarm whistle body relative to valve body, to adjust the pretightning force of the elastic element.
4. respirator pressure reducer alarm whistle device as described in claim 1, which is characterized in that the upper surface of the thimble is in
Dome-shaped, the lower end surface of the pressure cap have the cone tank of indent, and the cone tank is pressed on the dome-shaped upper end of the thimble
On face.
5. respirator pressure reducer alarm whistle device as described in claim 1, which is characterized in that the piston has nonmetallic
Part, when the lower end surface of sealing element is pressed on the upper surface of piston, the lower end surface of sealing element is pressed on the non-metallic part
On.
6. respirator pressure reducer alarm whistle device as described in claim 1, which is characterized in that the alarm whistle core and alarm
The interference fit connection of whistle body.
7. respirator pressure reducer alarm whistle device as described in claim 1, which is characterized in that between the piston and valve body
Equipped with O-ring.
8. respirator pressure reducer alarm whistle device as described in claim 1, which is characterized in that between the piston and valve body
Equipped with retaining ring.
9. respirator pressure reducer alarm whistle device as described in claim 1, which is characterized in that the sealing element and valve body it
Between be equipped with O-ring.
10. respirator pressure reducer alarm whistle device as described in claim 1, which is characterized in that the elastic element includes
Spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810942283.XA CN108969922A (en) | 2018-08-17 | 2018-08-17 | A kind of respirator pressure reducer alarm whistle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810942283.XA CN108969922A (en) | 2018-08-17 | 2018-08-17 | A kind of respirator pressure reducer alarm whistle device |
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| Publication Number | Publication Date |
|---|---|
| CN108969922A true CN108969922A (en) | 2018-12-11 |
Family
ID=64554045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810942283.XA Pending CN108969922A (en) | 2018-08-17 | 2018-08-17 | A kind of respirator pressure reducer alarm whistle device |
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| Country | Link |
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| CN (1) | CN108969922A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112370674A (en) * | 2020-11-05 | 2021-02-19 | 周圆鹤 | Positive pressure type air respirator for fire fighting |
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| CN1374136A (en) * | 2002-04-11 | 2002-10-16 | 山西虹安科技有限公司 | Pneuamtic device for positive pressure oxygen respirator |
| CN203329215U (en) * | 2013-07-24 | 2013-12-11 | 浙江恒泰安全设备有限公司 | High pressure alarm whistle for respirator |
| CN208823829U (en) * | 2018-08-17 | 2019-05-07 | 上海宝亚安全装备股份有限公司 | A kind of respirator pressure reducer alarm whistle device |
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2018
- 2018-08-17 CN CN201810942283.XA patent/CN108969922A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2041571U (en) * | 1988-12-14 | 1989-07-26 | 抚顺煤矿安全仪器厂 | Multi-functional combined reducer for breathing apparatus |
| JPH10192429A (en) * | 1997-01-09 | 1998-07-28 | Kawaju Bosai Kogyo Kk | Respirator |
| CN2328382Y (en) * | 1998-04-16 | 1999-07-14 | 抚顺煤矿安全仪器总厂 | Residue pressure alarm device for oxygen respirator |
| CN1374136A (en) * | 2002-04-11 | 2002-10-16 | 山西虹安科技有限公司 | Pneuamtic device for positive pressure oxygen respirator |
| CN203329215U (en) * | 2013-07-24 | 2013-12-11 | 浙江恒泰安全设备有限公司 | High pressure alarm whistle for respirator |
| CN208823829U (en) * | 2018-08-17 | 2019-05-07 | 上海宝亚安全装备股份有限公司 | A kind of respirator pressure reducer alarm whistle device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112370674A (en) * | 2020-11-05 | 2021-02-19 | 周圆鹤 | Positive pressure type air respirator for fire fighting |
| CN112370674B (en) * | 2020-11-05 | 2022-01-25 | 郝志勇 | Positive pressure type air respirator for fire fighting |
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Application publication date: 20181211 |