CN205155275U - Diaphragm formula governing valve and compressed air formula mask - Google Patents
Diaphragm formula governing valve and compressed air formula mask Download PDFInfo
- Publication number
- CN205155275U CN205155275U CN201520897163.4U CN201520897163U CN205155275U CN 205155275 U CN205155275 U CN 205155275U CN 201520897163 U CN201520897163 U CN 201520897163U CN 205155275 U CN205155275 U CN 205155275U
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- valve
- diaphragm
- seat
- spool
- air
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Abstract
The utility model relates to a governing valve field specifically is a diaphragm formula governing valve and compressed air formula mask, and diaphragm formula governing valve includes valve body (1), it forms valve pocket (14) after valve gap (2) to be equipped with on valve body (1), its characterized in that: processing inlet channel (10), air outlet channel (11) and middle chamber (12) in valve body (1), middle chamber (12) and inlet channel (10) UNICOM, air outlet channel (11) and valve pocket (14) UNICOM. Use this kind of diaphragm structural adjustment valve and can stablize the terminal output air current of pipeline on the respiratory air formula mask of supply personnel to breathe the travelling comfort when improvement personnel use the mask, its peculiar structure has decided this kind of governing valve can realize higher regulation precision, thereby has guaranteed that air supply pressure takes place when undulant, and the terminal air current of pipeline only can take place less change.
Description
Technical field
The utility model relates to modulating valve field, is specially a kind of diaphragm control valve and is applied to the compressed air type mask of this valve.
Background technique
Compressed air type mask is made up of face shield and air feeder, and face shield comprises the component such as cover body, eyeglass, eye card, oronasal mask, communication, fixed system; Air feeder is made up of air pipe, waist fixed system and modulating valve etc.Breathing hose one end is connected with breathing mask interface, and the other end is connected with rapid pipe joint with modulating valve.
The effect of compressed air type mask is the pressure and the flow that the pressurized air of certain pressure are adjusted to suitable human body respiration, and need take into full account the travelling comfort that personnel breathe and Security.Modulating valve is the parts realizing compressed air pressure, Flow-rate adjustment, only has by realizing the reasonable air feed of whole pipeline to the appropriate design of modulating valve.
At present, the modulating valve of this type compressed air type mask on market is based on needle-like flow control valve, the great advantage of this kind of modulating valve is that structure is simple, easily processing, with low cost etc., but the air draught poor stability after this kind of modulating valve regulates, and when compressed air pressure changes a lot, modulating valve cannot automatic pressure regulation, and air downstream flow can sharply increase, and the personnel that cause breathe discomfort even threat to life.
Summary of the invention
The purpose of this utility model is to provide a kind of modulating valve that automatically can regulate compressed air line pressure and flow, realizes the stable output of line end air.
The utility model adopts following technological scheme to realize:
A kind of diaphragm control valve, comprises valve body, forms valve pocket after described valve body being equipped with valve gap; Processing gas inlet passage, outlet passageway and intermediate cavity in described valve body, described intermediate cavity and gas-entered passageway UNICOM, described outlet passageway and valve pocket UNICOM; Be positioned in described valve body above intermediate cavity and install valve seat, install spool in the central passage of described valve seat, the bottom of described spool is cone, and described cone is positioned at intermediate cavity and its bottom surface is supported by Returnning spring; Be the conical surface bottom the central passage of described valve seat, when described spool moves upward to terminal along valve seat central passage under action of reset spring, the cone of spool and the conical surface of valve seat are fitted.
Described valve gap runs through installation valve rod, regulating handle, its inner linking springs seat are installed in described valve rod outer end, and described spring seat is set with pressure adjusting spring, and described pressure adjusting spring one end presses down diaphragm against spring seat, its other end, and described diaphragm is positioned at valve seat top; Be provided with in the middle part of described diaphragm bottom surface and push away groove, pushing away in groove of diaphragm is inserted in described spool upper end.
During use, pressure is that the pressurized air of P1 is inputted after the throttling of air inlet adjustment valve by right-hand member import, and pressure exports after reducing to P2.The large I of pressure P 2 is regulated by pressure adjusting spring.Detailed process is, turn clockwise regulating handle, and promote valve rod and move down, pressure adjusting spring is compressed, and then press down diaphragm and move down, promotion spool moves downward, and the cone of spool bottom and the conical surface of valve seat depart from, and the air intake valve on valve seat is opened, pressurized air enters intermediate cavity by gas-entered passageway, enter valve pocket along valve seat center-aisle, have outlet passageway to flow out afterwards, then valve body has air pressure to export at delivery outlet.Meanwhile, output pressure produces thrust upwards on diaphragm, and this thrust adds the effect of Returnning spring and pressure adjusting spring active force when balancing each other, and valve just has stable Output pressure.
If the instantaneous rising of incoming pressure, then the delivery pressure entered in intermediate cavity will increase, the corresponding increase of the reasoning that diaphragm produces, and this thrust destroys original equilibrium of forces, and diaphragm is moved up.While diaphragm moves, because of the effect of Returnning spring, spool is also moved up, turns down intake valve port, throttling action strengthens, and delivery pressure is declined, and till reaching new balance, delivery pressure gets back to substantially again original value.If the instantaneous decline of incoming pressure, the delivery pressure then entered in intermediate cavity also declines, the corresponding reduction of the reasoning that diaphragm produces, this thrust destroys original equilibrium of forces, diaphragm is moved down, and spool moves down thereupon, and intake valve port is opened greatly, throttling action reduces, and makes delivery pressure also substantially get back to original value.Ensure that modulating valve has stable delivery pressure.
Be rotated counterclockwise regulating handle, pressure adjusting spring is loosened, the gas thrust acted on diaphragm is greater than the active force of pressure adjusting spring, and diaphragm upsweeps, and by the effect upwardly spool of Returnning spring, closes intake valve port, makes valve be in no-output state.
A kind of compressed air type mask, comprises face shield, seat that described face shield is exhaled connects respirating tube; Described respirating tube installs described diaphragm control valve, and quick-acting joint is installed in described respirating tube end.
This kind of diaphragm structure modulating valve is applied in staff breathe air type mask on can stablize line end output gas flow, thus breathe travelling comfort when improving librarian use mask, its peculiar structures shape this kind of modulating valve can realize higher degree of regulation, thus when ensure that fluctuation occurs bleed pressure, only can there is less change in line end air-flow, such as precision is the diaphragm control valve of 1%, when bleed pressure changes a lot, only can there is the change of bleed pressure changing value 1% in line end personnel suction end, because of risk that airflow fluctuation causes when reducing librarian use this kind of mask, increase the reliability and safety that it uses, if, as adopted the modulating valve of other pattern, the degree of regulation of this kind so high cannot be realized, the problem that line end airflow stability is poor and degree of regulation is low of this series products before fundamentally solving.
Accompanying drawing explanation
Fig. 1 represents the cross-sectional view of diaphragm control valve.
Fig. 2 represents the structural representation of compressed air type mask.
In figure, 1-valve body, 2-valve gap, 3-valve seat, 4-valve rod, 5-regulating handle, 6-pressure adjusting spring, 7-spring seat, 8-spool, 9-diaphragm, 10-gas-entered passageway, 11-goes out passage, 12-intermediate cavity, 13-cone, 14-valve pocket, 15-Returnning spring, 16-air chamber, 101-face shield, 102-respirating tube, 103-diaphragm control valve, 104-quick-acting joint.
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the utility model is described in detail.
A kind of diaphragm control valve, as shown in Figure 1, comprises valve body 1, forms valve pocket 14 after described valve body 1 being equipped with valve gap 2; Processing gas inlet path 10, outlet passageway 11 and intermediate cavity 12 in described valve body 1, described intermediate cavity 12 and gas-entered passageway 10 UNICOM, described outlet passageway 11 and valve pocket 14 UNICOM.Pressurized air is entered by gas-entered passageway 10 in the intermediate cavity 12 in valve body 1, enters in valve pocket 14 after valve seat 3 expenditure and pressure, and the outlet passageway 11 then entered in valve body 1 by valve pocket 14 is discharged.
As shown in Figure 1, be positioned at above intermediate cavity 12 and install valve seat 3 in described valve body 1, install spool 8 in the central passage of described valve seat 3, the bottom of described spool 8 is cone 13, and described cone 13 is positioned at intermediate cavity 12 and its bottom surface is supported by Returnning spring 15; Be the conical surface bottom the central passage of described valve seat 3, when described spool 8 moves upward to terminal along valve seat 3 central passage under Returnning spring 15 acts on, the cone 13 of spool 8 is fitted with the conical surface of valve seat 3.
As shown in Figure 1, described valve gap 2 runs through valve rod 4 is installed, regulating handle 5, its inner linking springs seat 7 are installed in described valve rod 4 outer end, described spring seat 7 is set with pressure adjusting spring 6, and described pressure adjusting spring 6 one end presses down diaphragm 9 against spring seat 7, its other end, and described diaphragm 9 is positioned at valve seat 3 top, and and form air chamber 16 between valve seat 3, the effect of air chamber 16 is, delivery pressure stably can be put on diaphragm 9, be beneficial to the stable regulation of delivery pressure.Be provided with in the middle part of described diaphragm 9 bottom surface and push away groove, pushing away in groove of diaphragm 9 is inserted in described spool 8 upper end.
By the cone match effect of the cone 13 bottom spool 8 with central passage in valve seat 3, realize compressed-air actuated expenditure and pressure, delivery pressure acts on diaphragm 9 and produces thrust afterwards, the restoring force of the Returnning spring below this thrust and cone 13 produces upwards to be formed to lifting force diaphragm makes a concerted effort, after applying to reach balance with the downward pressure of diaphragm with pressure adjusting spring, then have stable pressure to input in valve pocket, the outlet passageway along valve body is stable to be exported.Even if there is increase or the reduction of moment in input compressed-air, due to the effect of pressure adjusting spring, the effect put on diaphragm is balance with joint efforts soon again, keeps delivery pressure to stablize, only can produce less delivery pressure change, realize the stable output of line end air.
This kind of diaphragm structure modulating valve is applied in staff breathe air type mask on can stablize line end output gas flow, thus improve librarian use mask time breathe travelling comfort.As shown in Figure 2, a kind of compressed air type mask, comprises face shield 101, and seat that described face shield 101 is exhaled connects respirating tube 102; Described respirating tube 102 installs above-mentioned diaphragm control valve 103, and quick-acting joint 104 is installed in described respirating tube 102 end.
It should be noted last that; above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted; although be described in detail with reference to the utility model embodiment; those of ordinary skill in the art is to be understood that; the technical solution of the utility model is modified or equivalent replacement; do not depart from the spirit and scope of the technical solution of the utility model, it all should be contained in claims of the present utility model.
Claims (3)
1. a diaphragm control valve, comprises valve body (1), described valve body (1) is equipped with valve gap (2) and forms valve pocket (14) afterwards; It is characterized in that: the interior processing gas inlet passage (10) of described valve body (1), outlet passageway (11) and intermediate cavity (12), described intermediate cavity (12) and gas-entered passageway (10) UNICOM, described outlet passageway (11) and valve pocket (14) UNICOM; Be positioned at intermediate cavity (12) top in described valve body (1) and valve seat (3) is installed, in the central passage of described valve seat (3), spool (8) is installed, the bottom of described spool (8) is cone (13), and described cone (13) is positioned at intermediate cavity (12) and its bottom surface is supported by Returnning spring (15); Be the conical surface bottom the central passage of described valve seat (3), when described spool (8) moves upward to terminal along valve seat (3) central passage under Returnning spring (15) effect, the cone (13) of spool (8) and the conical surface of valve seat (3) are fitted;
Described valve gap (2) runs through valve rod (4) is installed, regulating handle (5), its inner linking springs seat (7) are installed in described valve rod (4) outer end, described spring seat (7) is set with pressure adjusting spring (6), described pressure adjusting spring (6) one end presses down diaphragm (9) against spring seat (7), its other end, and described diaphragm (9) is positioned at valve seat (3) top; Be provided with in the middle part of described diaphragm (9) bottom surface and push away groove, pushing away in groove of diaphragm (9) is inserted in described spool (8) upper end.
2. diaphragm control valve according to claim 1, is characterized in that: form air chamber (16) between described diaphragm (9) and valve seat (3).
3. a compressed air type mask, comprises face shield (101), and the upper expiration seat of described face shield (101) connects respirating tube (102); It is characterized in that: the upper diaphragm control valve (103) installed described in claim 1 or 2 of described respirating tube (102), quick-acting joint (104) is installed in described respirating tube (102) end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520897163.4U CN205155275U (en) | 2015-11-12 | 2015-11-12 | Diaphragm formula governing valve and compressed air formula mask |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520897163.4U CN205155275U (en) | 2015-11-12 | 2015-11-12 | Diaphragm formula governing valve and compressed air formula mask |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205155275U true CN205155275U (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520897163.4U Expired - Fee Related CN205155275U (en) | 2015-11-12 | 2015-11-12 | Diaphragm formula governing valve and compressed air formula mask |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205155275U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108057188A (en) * | 2017-12-29 | 2018-05-22 | 上海宝亚安全装备股份有限公司 | A kind of outlet valve of adjustable Opening pressure |
-
2015
- 2015-11-12 CN CN201520897163.4U patent/CN205155275U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108057188A (en) * | 2017-12-29 | 2018-05-22 | 上海宝亚安全装备股份有限公司 | A kind of outlet valve of adjustable Opening pressure |
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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: 20160413 Termination date: 20201112 |
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| CF01 | Termination of patent right due to non-payment of annual fee |