CN203943995U - A kind of respirator cartridge pressure reduction valve - Google Patents
A kind of respirator cartridge pressure reduction valve Download PDFInfo
- Publication number
- CN203943995U CN203943995U CN201420364701.9U CN201420364701U CN203943995U CN 203943995 U CN203943995 U CN 203943995U CN 201420364701 U CN201420364701 U CN 201420364701U CN 203943995 U CN203943995 U CN 203943995U
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- valve
- diaphragm
- valve rod
- valve body
- gas
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 10
- 238000009987 spinning Methods 0.000 claims abstract description 7
- 229920001296 polysiloxane Polymers 0.000 claims description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
A kind of respirator cartridge pressure reduction valve, it comprises and is threaded connection the edge cover of mode spinning in body cavity, with gap fiting mode, be arranged on the valve rod in edge cover hollow cavity, the mode being threaded connection is arranged on the valve gap of valve rear end, be fitted in the diaphragm between valve gap and valve body binding end, at the valve gap inner chamber that is arranged in diaphragm rear portion, pressure spring, spring card and regulating valve stem be installed successively; Front end at valve body is provided with and inlays the vertical through hole as gas input port being connected of cover hollow cavity, at the middle part of valve body, be provided with and inlay the cover hollow cavity vertical through hole as gas output end mouth being connected, and described through hole and be provided with a throttle orifice between the diaphragm chamber of diaphragm front portion; On described valve rod, be provided with former and later two ring platforms, in the valve rod section of front ring platform front portion, be set with pre-compressed spring, after being positioned at valve rod, in the valve rod section at Huan Tai rear portion, be provided with and the O RunddichtringO of inlaying cover rear portion ladder endoporus and matching.
Description
Technical field
This utility model relates to a kind of respirator cartridge pressure reduction valve, particularly relates to for various respirators and carries out the integrated required low-pressure high flow capacity output of gas circuit air relief valve.
Background technology
There is following problem in the like product of Use of respirator at present:
1, the widely used air relief valve of respirator is finished product air relief valve, and needing increases extra link, causes air relief valve installation volume excessive, handling difficulty.
2, the increase of air relief valve link causes the increasing of the integrated volume of gas circuit, has limited the design of respirator internal structure.
3, the cartridge pressure reduction valve that existing market provides cannot meet the job requirement of respirator to gas high flow capacity, low-pressure.
Summary of the invention
The purpose of this utility model is just for above-mentioned like product existing problem and shortage in use, the problem that air relief valve is in use occurred is carried out structural design and improvement, fundamentally solve, for respirator provides a kind of convenient air relief valve of installing, can carry out large flow low-pressure output.
The purpose of this utility model realizes by following technical measures:
Respirator cartridge pressure reduction valve of the present utility model comprises valve body, is threaded connection the edge cover of mode spinning in body cavity, between the front end of described edge cover and the ladder endoporus of valve body front end, by silicone gasket, seals; With gap fiting mode, be arranged on the valve rod in edge cover hollow cavity, the mode being threaded connection is arranged on the valve gap of valve rear end, is fitted in the diaphragm between valve gap and valve body binding end, at diaphragm centre bore, by tabletting and nut, push rod is installed; The valve gap inner chamber that is arranged in diaphragm rear portion pressure spring, spring card are installed successively and the mode spinning that is threaded connection at the regulating valve stem of valve gap rear end; Front end at valve body is provided with and inlays the vertical through hole as gas input port being connected of cover hollow cavity, at the middle part of valve body, be provided with and inlay the cover hollow cavity vertical through hole as gas output end mouth being connected, and the described through hole as gas output end mouth and be provided with a throttle orifice between the diaphragm chamber of diaphragm front portion; On described valve rod, be provided with former and later two ring platforms, described front ring platform is positioned at the front end of silicone gasket, and form sealing pair with silicone gasket endoporus, and be set with pre-compressed spring in the valve rod section of front ring platform front portion, after being positioned at valve rod, in the valve rod section at Huan Tai rear portion, be provided with and the O RunddichtringO of inlaying cover rear portion ladder endoporus and matching, between O RunddichtringO and edge cover inner chamber, valve rod, be interference fit, to cut off gas, enter thus the diaphragm chamber that is positioned at diaphragm front portion.
Gas input port of the present utility model is positioned at valve body plug-in mounting end, on the outer ring surface of the plug-in mounting end of valve body and respirator, is provided with the draw-in groove for the O type circle that is installed, and the O type circle in draw-in groove cuts off input gas.
Pressure spring front end described in the utility model is installed in the end face annular groove of tabletting, and pressure spring rear end mounting spring card is equipped with steel ball by the groove being oppositely arranged between spring card and regulating valve stem.The rear end face that is positioned at the front ring platform on valve rod is the conical ring face structure matching with the front end endoporus of silicone gasket.On valve gap, be provided with and be communicated with the pore that is positioned at diaphragm rear portion diaphragm chamber.
Operation principle of the present utility model is as follows:
When gas enters valve body by input port, the pressure of gas own is the precompression of pre-compressed spring in addition, promotes valve rod outer displacement backward, and by valve rod, goes forward to encircle the rear conical ring face extruding silicone gasket of platform, between valve rod and silicone gasket, be now sealing state, air relief valve is exported without gas.
Rotating regulation valve bar compression pressure spring, make diaphragm push rod promote valve rod until the rear conical ring emaciated face that valve rod goes forward to encircle platform from silicone gasket, now air relief valve input/output port is identical, gas by front the rear conical ring surface current that encircles platform of valve rod to gas output end mouth; By regulating valve stem, air relief valve output pressure is set, make air relief valve gas output pressure reach respirator operating pressure demand, valve body gas output end mouth has a throttle orifice, air relief valve output gas enters diaphragm cavity thus, when output pressure is when arranging pressure, the gas pressure that enters diaphragm cavity promotes diaphragm and moves in the other direction to pressure spring elastic force, and between the valve rod conical surface and packing ring, gap reduces, and gas communication resistance increment output pressure reduces; When output pressure is when arranging pressure, pressure spring bullet promotes diaphragm and moves in the other direction to gas pressure, and between the valve rod conical surface and packing ring, gap increases, and gas communication resistance reduces output pressure and strengthens.
Air relief valve output gas by throttle orifice to diaphragm Real-time Feedback, make air relief valve all the time in dynamic adjustment state, in addition between valve rod and packing ring, be sealed into end face seal, with respect to its circulation of other air relief valve, relatively reduce, guaranteed the stable output of air relief valve low-pressure and high flow capacity.
The beneficial effects of the utility model are as follows:
, plug-in mounting mode, during installation, without increasing link, greatly reduced air relief valve installation volume.
B, gas input/output port are all integrated in valve body plug-in mounting and partly go up, and installing hole can be realized air relief valve input and output and connect, make air relief valve have installation site flexibly, be convenient to the features such as dismounting.
C, air relief valve output gas by throttle orifice to diaphragm Real-time Feedback, make air relief valve all the time in dynamic adjustment state, in addition between valve rod and packing ring, be sealed into end face seal, with respect to its circulation of other air relief valve, relatively reduce, guaranteed the stable output of air relief valve low-pressure and high flow capacity.
Accompanying drawing explanation
Fig. 1 is the profile of utility model.
Sequence number in figure: (1) regulating valve stem, (2) locking nut, (3) valve gap, (4) steel ball, (5) spring card, (6) pressure spring, (7) valve body, (8) throttle orifice, (9) through hole, (10) O type circle, (11) through hole, (12) pre-compressed spring, (13) valve rod, (14) silicone gasket, (15) O RunddichtringO, (16) edge cover, (17) push rod, (18) diaphragm, (19) tabletting, (20) nut.
The specific embodiment
This utility model is described further below in conjunction with accompanying drawing:
As shown in Figure 1, respirator cartridge pressure reduction valve of the present utility model comprises valve body (7), be threaded connection the edge cover (16) of mode spinning in body cavity, between the front end of described edge cover (16) and the ladder endoporus of valve body (7) front end, by silicone gasket (14), seal; With gap fiting mode, be arranged on the valve rod (13) in edge cover (16) hollow cavity, the mode being threaded connection is arranged on the valve gap (3) of valve body (7) rear end, be fitted in the diaphragm (18) between valve gap (3) and valve body (7) binding end, at diaphragm (18) centre bore, by tabletting (19) and nut (20), push rod (17) be installed; The valve gap inner chamber that is arranged in diaphragm (18) rear portion pressure spring (6), spring card (5) are installed successively and the mode spinning that is threaded connection at the regulating valve stem (1) of valve gap rear end; Front end at valve body (7) is provided with and inlays the vertical through hole as gas input port being connected of cover (16) hollow cavity (11), at the middle part of valve body (7), be provided with and inlay the vertical through hole as gas output end mouth being connected of cover (16) hollow cavity (9), and described through hole (9) and be positioned between the anterior diaphragm chamber of diaphragm (18) and be provided with a throttle orifice (8); On valve gap (3), be provided with and be communicated with the pore that is positioned at diaphragm (18) rear portion diaphragm chamber; On described valve rod (13), be provided with former and later two ring platforms, described front ring platform is positioned at the front end of silicone gasket (14), and form sealing pair with silicone gasket endoporus, and in the valve rod section of front ring platform front portion, be set with pre-compressed spring (12), in the valve rod section that is positioned at Huan Tai rear portion after valve rod (13), be provided with and the O RunddichtringO (15) of inlaying cover (16) rear portion ladder endoporus and matching, between O RunddichtringO (15) and edge cover (16) inner chamber, valve rod (13), be interference fit, to cut off gas, enter thus the diaphragm chamber that is positioned at diaphragm (18) front portion.
Gas input port of the present utility model is positioned at valve body plug-in mounting end, on the outer ring surface of the plug-in mounting end of valve body (7) and respirator, is provided with the draw-in groove for the O type circle (10) that is installed, and the O type circle in draw-in groove cuts off input gas.
Pressure spring described in the utility model (6) front end is installed in the end face annular groove of tabletting (19), and pressure spring rear end mounting spring card (5) is equipped with steel ball (4) by the groove being oppositely arranged between spring card (5) and regulating valve stem (1); The rear end face that is positioned at the front ring platform on valve rod (13) is the conical ring face structure matching with the front end endoporus of silicone gasket (14).
During work, gas enters valve body by the through hole as gas input port (11) of valve body (7), due to the pressure of gas pre-compressed spring (12) elastic force in addition own, promote the front ring platform of valve rod (13) conical ring face extruding silicone gasket (14), between valve rod (13) and silicone gasket (14), be now sealing state, air relief valve is exported without gas; Rotating regulation valve bar (1), by steel ball (4), spring card (5) compression pressure spring (6), promote diaphragm (18) and push rod (17) mobile to valve rod (13), make the front ring platform conical ring face on valve rod (13) depart from gradually silicone gasket (14), now the through hole (9) as gas output end mouth should have gas output, continues rotating regulation valve bar (1) until air relief valve output pressure reaches respirator operating pressure demand.
Valve body (7) has a throttle orifice (8) to communicate with the through hole (11) as gas input port, when air relief valve carries out gas pressure output, output gas enters diaphragm cavity through throttle orifice (8), output gas passes through throttle orifice (8) to diaphragm (18) Real-time Feedback, make air relief valve all the time in dynamic adjustment state, in addition between valve rod (13) and packing ring (14), be sealed into end face seal, with respect to its circulation of other air relief valve, relatively reduce, guaranteed the stable output of air relief valve low-pressure and high flow capacity.
After the setting of air relief valve pressure completes, by locking nut (2) to the fastening locking of regulating valve stem (1).
Claims (5)
1. a respirator cartridge pressure reduction valve, it is characterized in that: it comprises valve body (7), be threaded connection the edge cover (16) of mode spinning in body cavity, between the front end of described edge cover (16) and the ladder endoporus of valve body (7) front end, by silicone gasket (14), seal; With gap fiting mode, be arranged on the valve rod (13) in edge cover (16) hollow cavity, the mode being threaded connection is arranged on the valve gap (3) of valve body (7) rear end, be fitted in the diaphragm (18) between valve gap (3) and valve body (7) binding end, at diaphragm (18) centre bore, by tabletting (19) and nut (20), push rod (17) be installed; The valve gap inner chamber that is arranged in diaphragm (18) rear portion pressure spring (6), spring card (5) are installed successively and the mode spinning that is threaded connection at the regulating valve stem (1) of valve gap rear end; Front end at valve body (7) is provided with and inlays the vertical through hole as gas input port being connected of cover (16) hollow cavity (11), at the middle part of valve body (7), be provided with and inlay the vertical through hole as gas output end mouth being connected of cover (16) hollow cavity (9), and the described through hole as gas output end mouth (9) and be positioned between the anterior diaphragm chamber of diaphragm (18) and be provided with a throttle orifice (8); On described valve rod (13), be provided with former and later two ring platforms, described front ring platform is positioned at the front end of silicone gasket (14), and form sealing pair with silicone gasket endoporus, and in the valve rod section of front ring platform front portion, be set with pre-compressed spring (12), in the valve rod section that is positioned at Huan Tai rear portion after valve rod (13), be provided with and the O RunddichtringO (15) of inlaying cover (16) rear portion ladder endoporus and matching, between O RunddichtringO (15) and edge cover (16) inner chamber, valve rod (13), be interference fit, to cut off gas, enter thus the diaphragm chamber that is positioned at diaphragm (18) front portion.
2. respirator cartridge pressure reduction valve according to claim 1, it is characterized in that: gas input port is positioned at valve body plug-in mounting end, on the outer ring surface of the plug-in mounting end of valve body (7) and respirator, be provided with the draw-in groove for the O type circle (10) that is installed, the O type circle in draw-in groove cuts off input gas.
3. respirator cartridge pressure reduction valve according to claim 1, it is characterized in that: described pressure spring (6) front end is installed in the end face annular groove of tabletting (19), pressure spring rear end mounting spring card (5) is equipped with steel ball (4) by the groove being oppositely arranged between spring card (5) and regulating valve stem (1).
4. respirator cartridge pressure reduction valve according to claim 1, is characterized in that: the rear end face that is positioned at the front ring platform on valve rod (13) is the conical ring face structure matching with the front end endoporus of silicone gasket (14).
5. respirator cartridge pressure reduction valve according to claim 1, is characterized in that: on valve gap (3), be provided with and be communicated with the pore that is positioned at diaphragm (18) rear portion diaphragm chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420364701.9U CN203943995U (en) | 2014-07-03 | 2014-07-03 | A kind of respirator cartridge pressure reduction valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420364701.9U CN203943995U (en) | 2014-07-03 | 2014-07-03 | A kind of respirator cartridge pressure reduction valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203943995U true CN203943995U (en) | 2014-11-19 |
Family
ID=51886061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420364701.9U Expired - Fee Related CN203943995U (en) | 2014-07-03 | 2014-07-03 | A kind of respirator cartridge pressure reduction valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203943995U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112618921A (en) * | 2020-12-23 | 2021-04-09 | 四川大学华西医院 | Three-cavity two-bag tube for dynamically monitoring pressure of air bag based on flexible sensing material |
| CN113577487A (en) * | 2021-06-20 | 2021-11-02 | 三河科达实业有限公司 | Special breathing mask of portable general life support system suitable for severe cold environment |
-
2014
- 2014-07-03 CN CN201420364701.9U patent/CN203943995U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112618921A (en) * | 2020-12-23 | 2021-04-09 | 四川大学华西医院 | Three-cavity two-bag tube for dynamically monitoring pressure of air bag based on flexible sensing material |
| CN113577487A (en) * | 2021-06-20 | 2021-11-02 | 三河科达实业有限公司 | Special breathing mask of portable general life support system suitable for severe cold environment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141119 |