CN204073027U - A kind of proportioning valve and respirator - Google Patents
A kind of proportioning valve and respirator Download PDFInfo
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- CN204073027U CN204073027U CN201420404189.6U CN201420404189U CN204073027U CN 204073027 U CN204073027 U CN 204073027U CN 201420404189 U CN201420404189 U CN 201420404189U CN 204073027 U CN204073027 U CN 204073027U
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- spool
- valve
- push rod
- pilot hole
- hole
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Abstract
The utility model discloses a kind of proportioning valve and respirator, proportioning valve comprises valve body, valve pocket, air intake, gas outlet and spool, also comprise valve driver and drive push rod, described valve pocket comprises flowing hole, described air intake is communicated with described gas outlet by described flowing hole, described valve driver drives described driving push rod, described valve body is provided with front pilot hole and rear pilot hole, described driving push rod is fixed through the first end of described rear pilot hole and described spool, second end of described spool stretches in described front pilot hole, described spool is positioned at described valve pocket at least partially, described spool has different gaps at the diverse location of flowing hole between described flowing hole, described valve driver drives described spool to be in the diverse location of described flowing hole by driving described driving push rod.
Description
[technical field]
This utility model relates to medical instruments field, is specifically related to a kind of proportioning valve and respirator.
[background technology]
The device that the automatically controlled mode of current employing controls gas flow is generally flow proportion valve, and the principle of this valve body utilizes coil to produce Magnetic Control valve opening size, thus realize the size controlling output gas flow flow.This valve is generally only applicable to high-pressure air source environment, under low-pressure gas source environment, (be generally the bleed pressure of below 10kPa), then cannot export the gas compared with large discharge, even cannot drive, cannot export gas.The structure of existing proportioning valve is also comparatively complicated.
[summary of the invention]
In order to overcome the deficiencies in the prior art, this utility model provides the comparatively simple proportioning valve of a kind of structure.
A kind of proportioning valve, comprise valve body, valve pocket, air intake, gas outlet and spool, also comprise valve driver and drive push rod, described valve pocket comprises flowing hole, described air intake is communicated with described gas outlet by described flowing hole, described valve driver drives described driving push rod, described valve body is provided with front pilot hole and rear pilot hole, described driving push rod is fixed through the first end of described rear pilot hole and described spool, second end of described spool stretches in described front pilot hole, described spool is positioned at described valve pocket at least partially, described spool has different gaps at the diverse location of flowing hole between described flowing hole, described valve driver drives described spool to be in the diverse location of described flowing hole by driving described driving push rod.
In one embodiment, also comprise stage clip, described stage clip is arranged in described valve pocket, and described stage clip is used for applying pressure to described spool makes to there is not gap between described spool and described flowing hole.
In one embodiment, also comprise spool plug, described front pilot hole is the through hole being communicated with described valve pocket and proportioning valve outside, described front pilot hole comprises first end and the second end, the first end of described front pilot hole is near described valve pocket, second end of described spool stretches in described pilot hole by the first end of described front pilot hole, and described spool plug gets lodged in the second end of described front pilot hole.
In one embodiment, also comprise the displacement transducer for measuring described driving push rod moving displacement, institute's displacement sensors is coupled with described driving push rod.
In one embodiment, also comprise sealing gasket, the first end of described stage clip acts on the first end of spool, second end of described stage clip acts on the inwall of described valve pocket, described sealing gasket is arranged between the first end outer wall of described spool and the inwall of described valve pocket, and described stage clip and described gas outlet are isolated by described sealing gasket.
In one embodiment, described valve body is provided with admission pressure and gathers mouth and outlet pressure collection mouth, and described admission pressure gathers mouth and outlet pressure gathers the both sides that mouth is positioned at described spool.
In one embodiment, described valve body comprises upper valve body and lower valve body, and described valve driver is arranged on described upper valve body side.
In one embodiment, also comprise push rod nut, described driving push rod is fixed by the first end of described push rod nut and described spool.
This utility model additionally provides a kind of respirator, adopts arbitrary described proportioning valve.
This proportioning valve can have good airflow stability, air-flow output-consistence, and the air-flow exported has higher precision.
[accompanying drawing explanation]
Fig. 1 is the spool of the proportioning valve of a kind of embodiment of this utility model structural representation when being in initial position;
Fig. 2 is structural representation when there is gap between the spool of the proportioning valve of a kind of embodiment of this utility model and flowing hole.
[detailed description of the invention]
Below the preferred embodiment of utility model is described in further detail.
As illustrated in fig. 1 and 2, a kind of proportioning valve of embodiment, comprise valve body, valve pocket, air intake 21, gas outlet 23 and spool 12, also comprise valve driver 7 and drive push rod 9, described valve body can comprise upper valve body 5 and lower valve body 2, described valve driver 7 is arranged on described upper valve body 5 side, such as, be arranged on upper valve body 5, described valve pocket comprises flowing hole 22, described air intake 21 is communicated with gas outlet 23 by flowing hole 22, valve driver 7 is for driving described driving push rod 9, described valve body is provided with front pilot hole 24 and rear pilot hole 51, described driving push rod 9 is fixed with the first end of described spool 12 through described rear pilot hole 51, second end of described spool 12 stretches in described front pilot hole 24, spool 12 is positioned at valve pocket at least partially, spool 12 is when the diverse location of flowing hole 22, spool 12 is stated between flowing hole 22 has different gaps, described valve driver 7 drives described spool 12 to be in the diverse location of described flowing hole by driving described driving push rod 9, thus the flow flowing through flowing hole 22 can be controlled, as shown in Figure 2, the direction of arrow in figure represents the flow direction of gas, gas flows out from gas outlet 23 from air intake 21 through flowing hole 22, when spool 12 is in righter place, gap between spool 12 and flowing hole 22 is larger, therefore larger by the gas flow of flowing hole 22, otherwise spool 12 is in more left place, the gap between spool 12 and flowing hole 22 is less, less by the gas flow of flowing hole 22, until the gap between spool 12 and flowing hole 22 is zero, gas cannot pass through.
Front pilot hole 24 and rear pilot hole 51 can make spool 12 more stable, smooth and easy in motor process, thus make the output of air-flow also more stable.
In preferably embodiment, proportioning valve can also comprise stage clip 6, and described stage clip 6 is arranged in described valve pocket, and described stage clip 6 for applying pressure to described spool 12, thus makes to there is not gap between described spool 12 and described flowing hole 22.In a more excellent embodiment, proportioning valve can also comprise sealing gasket 11, and the first end of described stage clip 6 acts on the first end of spool 12, and the second end of described stage clip 6 acts on the inwall of described valve pocket.Like this when valve driver 7 is in initial position, namely time very close to each other between spool 12 and flowing hole 22, stage clip 6 acts on spool 12, thus can make to be not easy between spool 12 and flowing hole 22, because the reason such as to loosen to occur gap, and then to cause gas to flow out from gas outlet 23.Between the first end outer wall that described sealing gasket 11 is arranged on described spool 12 and the inwall of described valve pocket, described stage clip 6 is isolated with described gas outlet 23 by described sealing gasket 11, also the gas namely flow through is difficult to through sealing gasket 11 and contacts with stage clip 6, can prevent gas from flowing out from stage clip 6 side simultaneously.When gas has corrosiveness to stage clip 6, can available protecting stage clip 6, thus prevent stage clip 6 lost efficacy and pressure cannot be applied to spool 12.Such as, when gas is oxygen, stage clip 6 is the easily oxidized materials such as metal, can effectively prevent stage clip 6 oxidized.
In preferably embodiment, proportioning valve also comprises spool plug 1, described front pilot hole 24 is the through holes being communicated with described valve pocket and proportioning valve outside, described front pilot hole 24 comprises first end and the second end, the first end of described front pilot hole 24 is near described valve pocket, second end of described spool 12 stretches in described pilot hole 24 by the first end of described front pilot hole 24, and described spool plug 1 gets lodged in the second end of described front pilot hole 24.By front pilot hole 24 is processed into through hole, be more beneficial to processing, spool plug 1 prevents gas the past pilot hole 24 from flowing out simultaneously, improves the degree of accuracy of gas flow.
In preferably embodiment, proportioning valve also comprises the displacement transducer 8 for measuring described driving push rod 9 moving displacement, institute's displacement sensors 8 is coupled with described driving push rod 9, displacement transducer 8 can detect displacement when gap (such as do not exist between spool 12 and flowing hole 22 displacement be 0) driving push rod 9, the gas flow that different driving push rod 9 displacements is namely corresponding different, by the displacement detected, driving push rod 9 is controlled, namely can realize the regulating and controlling to masonry flow.Especially when needs intermittence exports certain flow gas, the speed controlled by this Displacement Feedback, and precision is higher, also can obtain better airflow stability.
In preferably embodiment, due to the restriction in valve pocket space and the inconvenience of maintenance, installation baroceptor in valve pocket is also improper, thus on described valve body, be provided with admission pressure gather mouth 3 and outlet pressure collection mouth 4, described admission pressure gathers mouth 3 and outlet pressure gathers the both sides that mouth 4 is positioned at described spool 12, be respectively used to the air pressure of drawing air inlet place and giving vent to anger place, outside valve body, utilize the air pressure of baroceptor to this two place to detect, and then gas flow is controlled, to obtain stable air-flow, improve the precision of gas flow.
In preferably embodiment, proportioning valve also comprises push rod nut 10, and described driving push rod 9 is fixed with the first end of described spool 12 by described push rod nut 10, to safeguard to facilitate and upgrades spool 12.
In preferably embodiment, proportioning valve also comprises sealing ring 13, and it is arranged between spool 12 and flowing hole 22, makes when spool 12 is in initial position, the better effects if of spool 12 sealing gas.
In one embodiment, respirator can adopt any one proportioning valve above-mentioned, thus can the air-flow of stable output, and flow has higher precision.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For this utility model person of an ordinary skill in the technical field; without departing from the concept of the premise utility; some simple deduction or replace can also be made, all should be considered as belonging to the scope of patent protection that this utility model is determined by submitted to claims.
Claims (9)
1. a proportioning valve, comprise valve body, valve pocket, air intake, gas outlet and spool, it is characterized in that: also comprise valve driver and drive push rod, described valve pocket comprises flowing hole, described air intake is communicated with described gas outlet by described flowing hole, described valve driver drives described driving push rod, described valve body is provided with front pilot hole and rear pilot hole, described driving push rod is fixed through the first end of described rear pilot hole and described spool, second end of described spool stretches in described front pilot hole, described spool is positioned at described valve pocket at least partially, described spool has different gaps at the diverse location of flowing hole between described flowing hole, described valve driver drives described spool to be in the diverse location of described flowing hole by driving described driving push rod.
2. proportioning valve as claimed in claim 1, it is characterized in that: also comprise stage clip, described stage clip is arranged in described valve pocket, and described stage clip is used for applying pressure to described spool makes to there is not gap between described spool and described flowing hole.
3. proportioning valve as claimed in claim 1, it is characterized in that: also comprise spool plug, described front pilot hole is the through hole being communicated with described valve pocket and proportioning valve outside, described front pilot hole comprises first end and the second end, the first end of described front pilot hole is near described valve pocket, second end of described spool stretches in described pilot hole by the first end of described front pilot hole, and described spool plug gets lodged in the second end of described front pilot hole.
4. proportioning valve as claimed in claim 1, is characterized in that: also comprise the displacement transducer for measuring described driving push rod moving displacement, institute's displacement sensors is coupled with described driving push rod.
5. proportioning valve as claimed in claim 2, it is characterized in that: also comprise sealing gasket, the first end of described stage clip acts on the first end of spool, second end of described stage clip acts on the inwall of described valve pocket, described sealing gasket is arranged between the first end outer wall of described spool and the inwall of described valve pocket, and described stage clip and described gas outlet are isolated by described sealing gasket.
6. proportioning valve as claimed in claim 1, is characterized in that: described valve body is provided with admission pressure and gathers mouth and outlet pressure collection mouth, and described admission pressure gathers mouth and outlet pressure gathers the both sides that mouth is positioned at described spool.
7. proportioning valve as claimed in claim 1, is characterized in that: described valve body comprises upper valve body and lower valve body, and described valve driver is arranged on described upper valve body side.
8. proportioning valve as claimed in claim 1, it is characterized in that: also comprise push rod nut, described driving push rod is fixed by the first end of described push rod nut and described spool.
9. a respirator, is characterized in that, adopt as arbitrary in claim 1 to 8 as described in proportioning valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420404189.6U CN204073027U (en) | 2014-07-21 | 2014-07-21 | A kind of proportioning valve and respirator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420404189.6U CN204073027U (en) | 2014-07-21 | 2014-07-21 | A kind of proportioning valve and respirator |
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| Publication Number | Publication Date |
|---|---|
| CN204073027U true CN204073027U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420404189.6U Active CN204073027U (en) | 2014-07-21 | 2014-07-21 | A kind of proportioning valve and respirator |
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| CN (1) | CN204073027U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896116A (en) * | 2015-05-18 | 2015-09-09 | 阮雪红 | Electronic flow valve for controlling oxygen conveyance |
| CN105498066A (en) * | 2016-01-13 | 2016-04-20 | 深圳市诺然美泰科技有限公司 | Low-pressure large-flux ratio control quick response device and quick response control valve thereof |
| CN109139942A (en) * | 2018-09-30 | 2019-01-04 | 苏州普费勒精密量仪有限公司 | A kind of air inlet adjustable valve and pneumatic-to-current converter |
-
2014
- 2014-07-21 CN CN201420404189.6U patent/CN204073027U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896116A (en) * | 2015-05-18 | 2015-09-09 | 阮雪红 | Electronic flow valve for controlling oxygen conveyance |
| CN105498066A (en) * | 2016-01-13 | 2016-04-20 | 深圳市诺然美泰科技有限公司 | Low-pressure large-flux ratio control quick response device and quick response control valve thereof |
| CN105498066B (en) * | 2016-01-13 | 2017-09-12 | 深圳市诺然美泰科技股份有限公司 | Low pressure and mass flow ratio controls quick response device and its fast-response control valve |
| CN109139942A (en) * | 2018-09-30 | 2019-01-04 | 苏州普费勒精密量仪有限公司 | A kind of air inlet adjustable valve and pneumatic-to-current converter |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CP03 | Change of name, title or address |
Address after: A1302, Shenzhen national engineering laboratory building, No.20, Gaoxin South 7th Road, high tech Zone community, Yuehai street, Nanshan District, Shenzhen, Guangdong 518000 Patentee after: Shenzhen Security Medical Technology Co.,Ltd. Address before: 518000 floor 3, block a, Nanyuan Industrial Park, Xinyuan Road, Nanshan District, Shenzhen, Guangdong Patentee before: AMBULANC (SHENZHEN) TECH. Co.,Ltd. |