CN203425402U - Multifunctional pressure reducing valve - Google Patents
Multifunctional pressure reducing valve Download PDFInfo
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- CN203425402U CN203425402U CN201320596967.1U CN201320596967U CN203425402U CN 203425402 U CN203425402 U CN 203425402U CN 201320596967 U CN201320596967 U CN 201320596967U CN 203425402 U CN203425402 U CN 203425402U
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- pressure
- valve
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- high pressure
- tonifying
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Abstract
The utility model discloses a multifunctional pressure reducing valve which comprises a valve body, as well as a manual gulp valve, a pressure reducing valve, a safety valve, a high-pressure gas connector, a medium-pressure gas connector and a high-pressure gauge tube connector, which are arranged on the valve body; an air inlet, as well as a high-pressure branch I, a hig-pressure branch II and a high-pressure branch III, which are communicated with the air inlet, are arranged on the valve body; the manual gulp valve comprises a manual gulp button, a gulp valve seat, a manual gulp valve core and a valve core setup spring; the pressure reducing valve comprises a pressure reducing valve casing, a piston and a pressure reducing spring; the high-pressure gas connector is communicated with the high-pressure branch II, the high-pressure gauge tube connector is communicated with the high-pressure branch III, the safety valve is communicated with the air inlet, and the medium-pressure gas connector is communicated with a pressure reducing chamber. The pressure reducing valve is multifunctional, not only has function of reducing pressure, but also has an additional function of manually supplying air, integrates the functions of reducing pressure and supplying air; since the safety valve is mounted, the stable outlet pressure can be ensured better; the pressure reducing valve is small in size, simple in structure, and can ensure that externally connected pipelines are reduced, and is convenient to mount and demount.
Description
Technical field
The utility model relates to a kind of pressure-reducing valve, relates in particular to the Multifunction pressure-reducing valve using on a kind of respirator.
Background technology
The isolating positive pressure oxygen breathing apparatus that existing mine rescue, fire-fighting and chemical protection are used is a kind of closed circuit respiratory circulatory system, for wearer, in toxic and harmful environment, wears when operation or rescue activity.This system due to isolated with ambient atmos, has been set up closed circuit respiratory circulatory system with human body in use, and the oxygen concentration needing during human body respiration must could meet basic physiological demand higher than 21%.The gas storing in respirator is gases at high pressure, carrier is that gas cylinder must be first while using could be used for medium pressure gas through pressure reducer decompression, present pressure-reducing valve majority only has decompression, do not take into account other function, the outlet pressure of conventional pressure-reducing valve is to control by spring or piston, when losing efficacy, it just cannot guarantee outlet pressure, function singleness, and structure is comparatively complicated, easily break down.
At present, in compression release valve of respirator, be mostly the single decompression pressure-reducing valve that only has.On respirator, not only need again decompressor also to need other device, as aeration valve, safety valve, the devices such as gas shunt device, so just can make respirator normal operation.Will more complicated by the outside pipeline connecting of valve body by the device of these each tool functions in respirator, and pressure-reducing valve not only dismounting safeguard inconvenience, and the source of the gas only having outlet is single.
Utility model content
For above shortcomings part in prior art, the utility model provides a kind of failure rate is low, the Multifunction pressure-reducing valve using on isolating positive pressure oxygen breathing apparatus.
In order to solve the problems of the technologies described above, the utility model has adopted following technical scheme:
Multifunction pressure-reducing valve, comprises valve body and is arranged on manual air compensating valve, pressure-reducing valve, safety valve, gases at high pressure interface, medium pressure gas interface and the high pressure gauge pipe joint on valve body;
Air inlet, high pressure branch road I, high pressure branch road II and high pressure branch road III are set on described valve body, and described high pressure branch road I, high pressure branch road II and high pressure branch road III all communicate with air inlet, in described air inlet, filter are set;
Described manual air compensating valve comprises manual tonifying Qi button, tonifying Qi valve seat, manual air compensating valve core and spool pre-compressed spring; Described tonifying Qi valve seat is arranged in high pressure branch road I, one end of manual air compensating valve core is positioned at outside tonifying Qi valve seat, spool pre-compressed spring is arranged between one end of manual air compensating valve core and the inwall of high pressure branch road I, and described manual tonifying Qi button is corresponding with the other end of manual air compensating valve core;
Described pressure-reducing valve comprises pressure-reducing valve shell, piston and relief spring; Described pressure-reducing valve shell is arranged on valve body and also with between valve body forms the pressure-reducing chamber communicating with air inlet, described piston is arranged in pressure-reducing chamber, one end of piston is corresponding with the air inlet port in pressure-reducing chamber, and described relief spring is arranged between the other end and valve body of piston;
Described gases at high pressure interface communicates with high pressure branch road II, and described high pressure gauge pipe joint communicates with high pressure branch road III, and described safety valve communicates with air inlet, and described medium pressure gas interface communicates with pressure-reducing chamber.
As a kind of preferred version of the present utility model, described manual air compensating valve also comprises tonifying Qi enclosing cover, push-button reset spring and the manual fast interface of tonifying Qi, described tonifying Qi enclosing cover is arranged on valve body, one end of described manual tonifying Qi button is corresponding with manual air compensating valve core, and described push-button reset spring is arranged between valve body and the other end of manual tonifying Qi button.
Compared with prior art, the utlity model has following advantage:
1, this pressure-reducing valve not only has the function of decompression to be also accompanied with the function of manual tonifying Qi, is the Multifunction pressure-reducing valve that integrates decompression and tonifying Qi.
2, the installation of safety valve better guarantees the stable of outlet pressure.
3, a plurality of high and medium voltage exporters the connection of pipeline.
4, volume is light and handy, simple in structure, reduces external pipeline, easy accessibility.
5, this Multifunction pressure-reducing valve is used on respirator, and its exterior line is simplified, and reduces the existing defect of pressure-reducing valve, improves security reliability.
Accompanying drawing explanation
Fig. 1 is the top view of Multifunction pressure-reducing valve;
Fig. 2 is along the cross section view of A-A direction in Fig. 1.
In accompanying drawing: 1-valve body; 2-manual air compensating valve; 3-pressure-reducing valve; 4-safety valve; 5-gases at high pressure interface; 6-medium pressure gas interface; 7-high pressure gauge pipe joint; 8-air inlet; 9-filter; 10-manual tonifying Qi button; 11-tonifying Qi valve seat; 12-manual air compensating valve core; 13-spool pre-compressed spring; 14-pressure-reducing valve shell; 15-piston; 16-relief spring; 17-pressure-reducing chamber; 18-tonifying Qi enclosing cover; 19-push-button reset spring; 20-manual fast the interface of tonifying Qi.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, 2, Multifunction pressure-reducing valve, comprises valve body 1 and is arranged on manual air compensating valve 2, pressure-reducing valve 3, safety valve 4, gases at high pressure interface 5, medium pressure gas interface 6 and the high pressure gauge pipe joint 7 on valve body 1.
Wherein, air inlet 8, high pressure branch road I, high pressure branch road II and high pressure branch road III are set on valve body 1.High pressure branch road I, high pressure branch road II and high pressure branch road III all communicate with air inlet 8, the interior filter 9 that arranges of air inlet 8.Gases at high pressure interface 5 communicates with high pressure branch road II, and high pressure gauge pipe joint 7 communicates with high pressure branch road III, and safety valve 4 communicates with air inlet 8, and medium pressure gas interface 6 communicates with pressure-reducing chamber 17.
Manual air compensating valve 2 comprises manual tonifying Qi button 10, tonifying Qi valve seat 11, manual air compensating valve core 12, spool pre-compressed spring 13, tonifying Qi enclosing cover 18, push-button reset spring 19 and the manual fast interface 20 of tonifying Qi.Tonifying Qi enclosing cover 18 is arranged on valve body 1, and tonifying Qi valve seat 11 is positioned at tonifying Qi enclosing cover 18 and is arranged on high pressure branch road I.One end of manual air compensating valve core 12 is positioned at outside tonifying Qi valve seat 11, spool pre-compressed spring 13 is arranged between one end of manual air compensating valve core 12 and the inwall of high pressure branch road I, manually one end 10 of tonifying Qi button is corresponding with the other end of manual air compensating valve core 12, and push-button reset spring 19 is arranged between valve body 1 and the other end of manual tonifying Qi button 10.
Pressure-reducing valve 3 comprises pressure-reducing valve shell 14, piston 15 and relief spring 16.Pressure-reducing valve shell 14 be arranged on valve body 1 and with valve body 1 between form the pressure-reducing chamber 17 communicating with air inlet 8, piston 15 is arranged in pressure-reducing chamber 17, one end of piston 15 is corresponding with the air inlet port in pressure-reducing chamber 17, and relief spring 16 is arranged between the other end and valve body 1 of piston 15.
The major function of this Multifunction pressure-reducing valve is as follows: reduce pressure to gas (1); (2) when air pressure is not enough, can utilize manual air compensating valve to carry out tonifying Qi; (3), when outlet pressure is too high, safety valve automatic pressure-reducing, guarantees outlet pressure and device security; (4) a plurality of high-pressure outlets and middle extrusion mouth, facilitate pipeline and other pneumatic elements to connect.
While using this pressure-reducing valve, oxygen enters pressure-reducing valve from air inlet 8.When feeling that breathing has some setbacks, the personnel of wearing of isolating positive pressure oxygen breathing apparatus can press manual tonifying Qi button 10, manually tonifying Qi button 10 moves inward and promotes manual air compensating valve core 12, manual air compensating valve core 12 is opened valve port, gas just enters the fast interface 20 of manual tonifying Qi by aperture, and manually the fast interface 20 of tonifying Qi is to breathing cabin output.When the personnel of wearing of isolating positive pressure oxygen breathing apparatus feel after comfortable to unclamp manual tonifying Qi button 10 and manual air compensating valve core 12, manual air compensating valve core 12 is at the effect lower seal valve port of spool pre-compressed spring 13, and gas is not just breathed cabin not entering.After the valve port of gas by pressure-reducing valve 3, enter pressure-reducing chamber 17, under the effect of piston 15 and relief spring 16, gas is reduced pressure and becomes medium pressure gas, post-decompression gas is by 6 outputs of medium pressure gas interface.When outlet pressure is greater than the safety valve 4 that regulation requires, the guiding valve Compress Spring venting in safety valve 4 reduces outlet pressure.For pressure being provided to the warning device of isolating positive pressure oxygen breathing apparatus, this Multifunction pressure-reducing valve has gases at high pressure interface 5 to be attached thereto specially to provide high-pressure.
The decompression process of pressure-reducing valve is that relief spring 16 is adding that the stressed difference in areas of two sides air pressure arrives the effect of decompression, namely the little and F of the lifting surface area of high-pressure side is just large, so large F is little for the lifting surface area of low pressure surface, thereby cause like this pressure differential on both sides to make air pressure decompression.The decompression of common pressure-reducing valve be by F low+F spring ﹦ F is high, and this pressure-reducing valve is F, high+F spring ﹦ F is low, arriving this requirement is also a difficult point, be exactly the position that manual air compensating valve 2 is installed in addition, this is an additional function, and this is a difficult point to realize pressure-reducing valve band aeration valve, and the guarantee of outlet pressure is the final purpose of all decompressions, so the generation of safety valve is guaranteed outlet pressure, but the installation of safety valve is also a large difficult point of this relief valves designs.(1) for realize decompression process F high+F spring ﹦ F is low, is the control to both sides difference in areas.(2) this end of high-pressure air source is selected in the installation of manual air compensating valve, and the control of air compensation is exactly the size in tonifying Qi hole.(3) so the installation of safety valve is that the size of spring force is controlled the guarantee that safety valve opens to reach pressure in order to guarantee that the pressure selection of low tension outlet is arranged on low-pressure gas source one end.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (2)
1. Multifunction pressure-reducing valve, is characterized in that: comprise valve body (1) and be arranged on manual air compensating valve (2), pressure-reducing valve (3), safety valve (4), gases at high pressure interface (5), medium pressure gas interface (6) and the high pressure gauge pipe joint (7) on valve body (1);
Air inlet (8), high pressure branch road I, high pressure branch road II and high pressure branch road III are set on described valve body (1), and described high pressure branch road I, high pressure branch road II and high pressure branch road III all communicate with air inlet (8), and filter (9) is set in described air inlet (8);
Described manual air compensating valve (2) comprises manual tonifying Qi button (10), tonifying Qi valve seat (11), manual air compensating valve core (12) and spool pre-compressed spring (13); Described tonifying Qi valve seat (11) is arranged in high pressure branch road I, one end of manual air compensating valve core (12) is positioned at outside tonifying Qi valve seat (11), spool pre-compressed spring (13) is arranged between one end of manual air compensating valve core (12) and the inwall of high pressure branch road I, and described manual tonifying Qi button (10) is corresponding with the other end of manual air compensating valve core (12);
Described pressure-reducing valve (3) comprises pressure-reducing valve shell (14), piston (15) and relief spring (16); Described pressure-reducing valve shell (14) be arranged on valve body (1) upper and with valve body (1) between form the pressure-reducing chamber (17) communicating with air inlet (8), described piston (15) is arranged in pressure-reducing chamber (17), one end of piston (15) is corresponding with the air inlet port of pressure-reducing chamber (17), and described relief spring (16) is arranged between the other end and valve body (1) of piston (15);
Described gases at high pressure interface (5) communicates with high pressure branch road II, and described high pressure gauge pipe joint (7) communicates with high pressure branch road III, and described safety valve (4) communicates with air inlet (8), and described medium pressure gas interface (6) communicates with pressure-reducing chamber (17).
2. Multifunction pressure-reducing valve according to claim 1, it is characterized in that: described manual air compensating valve (2) also comprises tonifying Qi enclosing cover (18), push-button reset spring (19) and the manual fast interface of tonifying Qi (20), described tonifying Qi enclosing cover (18) is arranged on valve body (1), one end of described manual tonifying Qi button (10) is corresponding with manual air compensating valve core (12), and described push-button reset spring (19) is arranged between valve body (1) and the other end of manual tonifying Qi button (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320596967.1U CN203425402U (en) | 2013-09-26 | 2013-09-26 | Multifunctional pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320596967.1U CN203425402U (en) | 2013-09-26 | 2013-09-26 | Multifunctional pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203425402U true CN203425402U (en) | 2014-02-12 |
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ID=50054467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320596967.1U Expired - Lifetime CN203425402U (en) | 2013-09-26 | 2013-09-26 | Multifunctional pressure reducing valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN203425402U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109498937A (en) * | 2018-12-13 | 2019-03-22 | 滨州职业学院 | A kind of patient with severe symptoms's nursing oxygen therapy self-checking device |
| CN109723695A (en) * | 2019-03-08 | 2019-05-07 | 广东南曦液压机械有限公司 | A kind of extra-high pressure unloading valve |
-
2013
- 2013-09-26 CN CN201320596967.1U patent/CN203425402U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109498937A (en) * | 2018-12-13 | 2019-03-22 | 滨州职业学院 | A kind of patient with severe symptoms's nursing oxygen therapy self-checking device |
| CN109723695A (en) * | 2019-03-08 | 2019-05-07 | 广东南曦液压机械有限公司 | A kind of extra-high pressure unloading valve |
| CN109723695B (en) * | 2019-03-08 | 2023-10-20 | 广东南曦液压机械有限公司 | Ultrahigh pressure unloading valve |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140212 |
|
| CX01 | Expiry of patent term |