CN201570250U - High-pressure alarm whistle for positive pressure air breathing apparatus - Google Patents
High-pressure alarm whistle for positive pressure air breathing apparatus Download PDFInfo
- Publication number
- CN201570250U CN201570250U CN2009202124338U CN200920212433U CN201570250U CN 201570250 U CN201570250 U CN 201570250U CN 2009202124338 U CN2009202124338 U CN 2009202124338U CN 200920212433 U CN200920212433 U CN 200920212433U CN 201570250 U CN201570250 U CN 201570250U
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- whistle
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- alarm
- airflow hole
- valve body
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Abstract
The utility model relates to a high-pressure alarm whistle for a positive pressure air breathing apparatus, which aims at providing a novel high-pressure alarm whistle for a positive pressure air breathing apparatus. The high-pressure alarm whistle for the positive pressure air breathing apparatus has simple structure, convenient use and lower cost. The high-pressure alarm whistle for the positive pressure air breathing apparatus comprises an alarm whistle body, a T-shaped piston, a high-pressure pipe connection nut, a high-pressure gauge joint, an alarm whistle shell and a high-pressure alarm spring, wherein a sealing column is embedded in the high pressure gauge. When the positive pressure air breathing apparatus normally supplies air, an airflow hole on the high-pressure pipe connection nut, an airflow hole on one smaller end of section of the T-shaped piston, and an airflow hole of the sealing column are communicated with each other and form a sole air piping; when the positive pressure air breathing apparatus has insufficient air, the airflow hole on the high-pressure pipe connection nut, the airflow hole on one smaller end of section of the T-shaped piston, an airflow hole of a cavity of the alarm whistle body, and an airflow on the alarm whistle shell are communicated with each other to form an alarm air piping and give an alarm.
Description
Technical field
The utility model relates to a kind of warning whistle that is used for air respiratorresuscitator, relates to a kind of alarm for high voltage whistle that is used for the positive-pressure type air respiratorresuscitator specifically.
Background technology
To be a kind of fireman store compressed-air actuated gas cylinder from taking to the positive-pressure type air respiratorresuscitator, uses the gas in the gas cylinder during breathing, do not rely on external environment gas, and in arbitrary breath cycle process, and the face shield internal pressure is all greater than the respirator of environmental pressure.Fire-fighting or industrial lifesaving personnel wear this equipment and can enter the disaster spot and give first aid to.Because the gas cylinder air demand is limited, storage pressure is when 55 ± 5Bar scope, starts working in the warning whistle that is installed on the mobile source of the gas reduction valve, and the rescue personnel withdraws the scene after hearing warning immediately, beyond to avoid.
Press during the pneumatic warning of existing positive-pressure type air respiratorresuscitator has and report to the police and the alarm for high voltage dual mode, in adopting, press when reporting to the police, warning whistle external structure is more harmonious with the breathing match ratio, but the reduction valve of positive-pressure type air respiratorresuscitator and the structure of high-voltage tube can be complicated a lot, thereby increase cost of products; When adopting alarm for high voltage, though the simplification that the reduction valve of positive-pressure type air respiratorresuscitator and high-voltage tube all obtain, but the structure heaviness at the warning whistle, and then the external structure at the whistle that causes reporting to the police can not be harmonious with the pipeline that is connected, equipment set is heavy and huge when causing reporting to the police the supporting use of the whistle and air respiratorresuscitator, is unfavorable for the convenience that equipment uses.Existing two kinds of warning whistles in the one-piece construction of equipment, carry, and aspect such as cost be difficult to reach simultaneously and take into account.
The utility model content
The purpose of this utility model is to solve the alarm for high voltage whistle this body structure heaviness that is used for the positive-pressure type air respiratorresuscitator in the prior art, cause equipment to use inconvenience, the too high defective of cost, a kind of novel alarm for high voltage whistle that is used for the positive-pressure type air respiratorresuscitator is provided, this warning whistle itself is simple in structure, and easy to use, cost is lower.
The purpose of this utility model is achieved in that
A kind of alarm for high voltage whistle that is used for the positive-pressure type air respiratorresuscitator comprises:
In the middle of the one warning whistle valve body, described warning whistle valve body is the less cavity of a stage casing diameter, which is provided with airflow hole;
One T type piston, place the cavity of described warning whistle valve body, described T type piston is a hollow, the close high-pressure air source inlet end of an end that its cross section is bigger, the less end in cross section stretches into the cavity of described warning whistle valve body to the less middle section of diameter, and the less end in described cross section is provided with airflow hole;
One high-voltage tube attaching nut, the one end is threaded in an end of warning whistle valve body, and with T type piston homonymy, the other end is connected with high-voltage tube;
One high pressure gauge joint is threaded in the other end of described warning whistle valve body, and is relative with T type piston, and sealing column is embedded in its end near T type piston, which is provided with airflow hole;
One warning whistle housing places between warning whistle valve body and the high-voltage tube attaching nut, which is provided with airflow hole, and this airflow hole communicates with airflow hole on the valve body of the warning whistle;
One alarm for high voltage spring places between T type piston and the warning whistle valve body, establishes spring shim between described alarm for high voltage spring and the warning whistle valve body;
When gases at high pressure act on pressure on the T type piston greater than the pressure of alarm for high voltage spring action on T type piston, seal between T type piston and the sealing column and contact, communicating between the airflow hole of the end that the airflow hole on the high-voltage tube attaching nut, T type piston cross-section are less, the airflow hole on the sealing column forms unique gas circuit; When gases at high pressure act on pressure on the T type piston less than the pressure of alarm for high voltage spring action on T type piston, the gap appears between T type piston and the sealing column, air-flow overflows from the gap, communicate between the airflow hole of the end that the airflow hole on the high-voltage tube attaching nut, T type piston cross-section are less, the airflow hole on the valve cavity of the warning whistle, the airflow hole on the housing of the warning whistle and form the warning gas circuit, send warning.
Wherein, fix by draw-in groove between described warning whistle valve body and the described warning whistle housing; Described warning whistle valve body is established the O RunddichtringO respectively with the groove that is connected of high pressure gauge joint, spring shim, is used for the air-flow at valve body two ends, the warning whistle is completely cut off, and high pressure gauge joint and T type piston are play the guiding role; Described warning whistle housing is established the O RunddichtringO respectively with the groove that is connected of warning whistle valve body, is used to prevent that air-flow from leaking, and improves the alarm sound intensity at the warning whistle; Be provided with the O RunddichtringO in described high-voltage tube attaching nut's the groove, be used to prevent that air-flow from leaking.
Further, the diameter of the airflow hole of the end that T type piston cross-section is less is 0.13～0.14mm, and in this diameter range, the air consumption that air communication was crossed this airflow hole when may command was reported to the police meets below the 5L/min that GB165566-2007 and GB124-2004 require; The diameter of the airflow hole on the valve cavity of the warning whistle is 0.14～0.20mm, and during with assurance warning whistle Normal Alarm, manometric indication also is normal.
Preferably, described high-voltage tube attaching nut's the other end is arranged to withhold structure, is connected by withholding with high-voltage tube, and is easy to connect, simple, simple to the requirement of high-voltage tube structure.
Further, be provided with a plastic shell outside the housing of the described warning whistle, and can locate by trip bolt, make warning whistle outward appearance and connecting tube harmonious, a filter screen is embedded in the described plastic shell, prevents that impurity from entering in the warning whistle, influences the work of the warning whistle.
The utility model is owing to adopted above-mentioned technical scheme, make it compared with prior art, have following advantage and good effect: it is simple in structure that the utility model is used for the alarm for high voltage whistle of positive-pressure type air respiratorresuscitator, thereby make warning whistle weight more light,, coordination more convenient with the supporting use of respirator.
Description of drawings
To embodiment of the present utility model and in conjunction with the description of its accompanying drawing, can further understand the purpose of this utility model, specific structural features and advantage by following.Wherein, accompanying drawing is:
When Fig. 1 was the normal air feed of positive-pressure type air respiratorresuscitator, the utility model was used for the partial cutaway schematic at the alarm for high voltage whistle of positive-pressure type air respiratorresuscitator;
Fig. 2 is that the utility model was used for the partial cutaway schematic at the alarm for high voltage whistle of positive-pressure type air respiratorresuscitator after the positive-pressure type air respiratorresuscitator warning whistle started warning.
Embodiment
The alarm for high voltage whistle that is used for the positive-pressure type air respiratorresuscitator as shown in Figure 1 and Figure 2 is the less cavity of a stage casing diameter in the middle of the warning whistle valve body 8, and cavity wall is provided with airflow hole 18; T type piston 3 places the cavity of warning whistle valve body 8, T type piston 3 is a hollow, the close high-pressure air source inlet end of an end that its cross section is bigger, the less end in cross section stretches into the cavity of warning whistle valve body 8 to the less middle section of diameter, and the less end in T type piston 3 cross sections is provided with airflow hole 17; High-voltage tube attaching nut 2, the one end is threaded in an end of warning whistle valve body 8, and with T type piston 3 homonymies, high-voltage tube attaching nut 2 groove is provided with O RunddichtringO 4 and seals, and the other end is connected (not shown) with high-voltage tube; High pressure gauge joint 13, be threaded in the other end of warning whistle valve body 8, relative with T type piston 3, the connection groove is established O RunddichtringO 10 and is sealed, also high pressure gauge joint 13 is play the guiding role simultaneously, high pressure gauge joint 13 is locked by clamp nut 12, and sealing column 9 is embedded in the end of high pressure gauge joint 13 near T type piston 3, and sealing column 9 is provided with airflow hole 16; Warning whistle housing 7, place between warning whistle valve body 8 and the high-voltage tube attaching nut 2, and fix by draw-in groove between the warning whistle valve body 8, the groove that connects is respectively equipped with O RunddichtringO 6, O RunddichtringO 11 seals, prevent that air-flow from leaking, warning whistle housing 7 is provided with airflow hole 15, and airflow hole 15 communicates with airflow hole 18; Alarm for high voltage spring 5 places between T type piston 3 and the warning whistle valve body 8, wherein, establishes spring shim 20 between alarm for high voltage spring 5 and warning whistle valve body 8, and warning whistle valve body 8 is established O RunddichtringO 19 with the groove that is connected of spring shim 20; Also be provided with a plastic shell 1 outside the warning whistle housing 7, position by trip bolt, filter screen 14 is embedded in the plastic shell 1, prevents that impurity from entering in the warning whistle, influences the work of the warning whistle.In the present embodiment, the diameter of airflow hole 17 is 0.13mm, and the diameter of airflow hole 18 is 0.2mm, guarantees that when Normal Alarm, manometric indication is normal.
High-voltage tube attaching nut 2 the other end is arranged to withhold structure, is connected (not shown) by withholding with high-voltage tube, regulate high pressure gauge joint 13, the alarm pressure at the warning whistle is set in the scope of 5.5 ± 0.5MPa.
When the normal air feed of positive-pressure type air respiratorresuscitator, the duty at the warning whistle as shown in Figure 1.The atmospheric pressure of positive-pressure type air respiratorresuscitator source of the gas end is greater than 5.5 ± 0.5MPa, so in whole respiratory, T type piston 3 is subjected to the pressure of alarm for high voltage spring 5 all the time less than the pressure of source of the gas to it.T type piston 3 sticks together tightly with sealing column 9 under the effect of air pressure, and have only airflow hole 21, airflow hole 17, airflow hole 16 to communicate this moment, forms gas circuit one, and air-flow passes to high pressure gauge voltage supply power from gas circuit one and shows.
Gas deficiency in the positive-pressure type air respiratorresuscitator, the whistle of reporting to the police this moment enters the warning duty, as shown in Figure 2.The atmospheric pressure of positive-pressure type air respiratorresuscitator source of the gas end is less than 5.5 ± 0.5MPa, and T type piston 3 is subjected to the pressure of alarm for high voltage spring 5 greater than the pressure of source of the gas to it.T type piston 3 can separate with sealing column 9 under the thrust of alarm for high voltage spring 5 and produce the gap, and this moment, airflow hole 21, airflow hole 17, airflow hole 18, airflow hole 15 also communicated except that gas circuit one, formed gas circuit two.Air-flow spreads out of from gas circuit two, realizes reporting to the police, and air-flow passes to the high pressure gauge air feed by gas circuit one simultaneously and presses demonstration in addition.
Claims (9)
1. an alarm for high voltage whistle that is used for the positive-pressure type air respiratorresuscitator is characterized in that, comprising:
In the middle of the one warning whistle valve body (8), described warning whistle valve body (8) is the less cavity of a stage casing diameter, which is provided with airflow hole (18);
One T type piston (3), place the cavity of described warning whistle valve body (8), described T type piston (3) is a hollow, the close high-pressure air source inlet end of an end that its cross section is bigger, the less end in cross section stretches into the cavity of described warning whistle valve body (8) to the less middle section of diameter, and the less end in described cross section is provided with airflow hole (17);
One high-voltage tube attaching nut (2), the one end is threaded in an end of warning whistle valve body (8), and with T type piston (3) homonymy, the other end is connected with high-voltage tube;
One high pressure gauge joint (13) is threaded in the other end of described warning whistle valve body (8), and is relative with T type piston (3), and sealing column (9) is embedded in its end near T type piston (3), which is provided with airflow hole (16);
One warning whistle housing (7) places between warning whistle valve body (8) and the high-voltage tube attaching nut (2), which is provided with airflow hole (15), communicates with airflow hole (18);
One alarm for high voltage spring (5) places between T type piston (3) and the warning whistle valve body (8), establishes spring shim (20) between described alarm for high voltage spring (5) and the warning whistle valve body (8);
When gases at high pressure act on pressure on the T type piston (3) when acting on pressure on the T type piston (3) greater than alarm for high voltage spring (5), seal between T type piston (3) and the sealing column (9) and contact, communicating between airflow hole (21), airflow hole (17), the airflow hole (16) forms unique gas circuit; When gases at high pressure act on pressure on the T type piston (3) when acting on pressure on the T type piston (3) less than alarm for high voltage spring (5), the gap appears between T type piston (3) and the sealing column (9), air-flow overflows from the gap, communicating between airflow hole (21), airflow hole (17), airflow hole (18), the airflow hole (15) forms the warning gas circuit, sends warning.
2. the alarm for high voltage whistle that is used for the positive-pressure type air respiratorresuscitator as claimed in claim 1, it is characterized in that: described warning whistle valve body (8) is established O RunddichtringO (10) with the groove that is connected of high pressure gauge joint (13), establishes O RunddichtringO (19) with the groove that is connected of spring shim (20).
3. the alarm for high voltage whistle that is used for the positive-pressure type air respiratorresuscitator as claimed in claim 1 or 2 is characterized in that: described warning whistle housing (7) is established O RunddichtringO (6) and O RunddichtringO (11) with the groove that is connected of warning whistle valve body (8).
4. the alarm for high voltage whistle that is used for the positive-pressure type air respiratorresuscitator as claimed in claim 1 is characterized in that: be provided with O RunddichtringO (4) in described high-voltage tube attaching nut's (2) the groove.
5. the alarm for high voltage whistle that is used for the positive-pressure type air respiratorresuscitator as claimed in claim 1 is characterized in that: described high-voltage tube attaching nut's (2) the other end is connected by withholding with high-voltage tube.
6. the alarm for high voltage whistle that is used for the positive-pressure type air respiratorresuscitator as claimed in claim 1 is characterized in that: the diameter of described airflow hole (17) is 0.13～0.14mm.
7. the alarm for high voltage whistle that is used for the positive-pressure type air respiratorresuscitator as claimed in claim 1 is characterized in that: the diameter of described airflow hole (18) is 0.14～0.20mm.
8. the alarm for high voltage whistle that is used for the positive-pressure type air respiratorresuscitator as claimed in claim 1 is characterized in that: fix by draw-in groove between described warning whistle valve body (8) and the described warning whistle housing (7).
9. as the described alarm for high voltage whistle that is used for the positive-pressure type air respiratorresuscitator of arbitrary claim among the claim 1-8, it is characterized in that: described warning whistle housing (7) is outer to be provided with a plastic shell (1), and filter screen (14) is embedded in the described plastic shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202124338U CN201570250U (en) | 2009-12-04 | 2009-12-04 | High-pressure alarm whistle for positive pressure air breathing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202124338U CN201570250U (en) | 2009-12-04 | 2009-12-04 | High-pressure alarm whistle for positive pressure air breathing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201570250U true CN201570250U (en) | 2010-09-01 |
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ID=42662549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202124338U Expired - Lifetime CN201570250U (en) | 2009-12-04 | 2009-12-04 | High-pressure alarm whistle for positive pressure air breathing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201570250U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104288931A (en) * | 2014-10-23 | 2015-01-21 | 南通市海鸥救生防护用品有限公司 | Double alarm device of air breather |
-
2009
- 2009-12-04 CN CN2009202124338U patent/CN201570250U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104288931A (en) * | 2014-10-23 | 2015-01-21 | 南通市海鸥救生防护用品有限公司 | Double alarm device of air breather |
| CN104288931B (en) * | 2014-10-23 | 2016-08-31 | 南通市海鸥救生防护用品有限公司 | Air respiratorresuscitator dual-alarm device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100901 |