CN101943279B - One-way valve and anaesthesia machine - Google Patents

One-way valve and anaesthesia machine Download PDF

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Publication number
CN101943279B
CN101943279B CN 200910088573 CN200910088573A CN101943279B CN 101943279 B CN101943279 B CN 101943279B CN 200910088573 CN200910088573 CN 200910088573 CN 200910088573 A CN200910088573 A CN 200910088573A CN 101943279 B CN101943279 B CN 101943279B
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CN
China
Prior art keywords
air inlet
adaptor
check valve
end air
valve body
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Expired - Fee Related
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CN 200910088573
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Chinese (zh)
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CN101943279A (en
Inventor
龚家明
张凯
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Beijing Aeonmed Co Ltd
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Beijing Aeonmed Co Ltd
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Publication date
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Priority to CN 200910088573 priority Critical patent/CN101943279B/en
Publication of CN101943279A publication Critical patent/CN101943279A/en
Application granted granted Critical
Publication of CN101943279B publication Critical patent/CN101943279B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention provides a one-way valve which comprises a valve boy, an adapter, a second end air inlet C, a second end air outlet B, a seal ring, a seal gasket and an elastic part, wherein a first internal channel communicated with the outside is arranged inside the valve body, and the end of the valve body is provided with a first end air inlet A of the first internal channel; the adapter is arranged in the first internal channel and comprises a second internal channel communicated with the first internal channel and a side air inlet D arranged on the side of the adapter; the second end air inlet C and the second end air outlet B are respectively located on both ends of the second internal channel; the seal ring is sheathed outside the adaptor and is arranged between the valve body and the adaptor; the seal gasket is arranged between the first end air inlet A and the second end air inlet C and has a shape applicable to sealing the shape of the first end air inlet A, and the edge of the seal gasket is provided with an air outlet opening; and the elastic part is abutted and pressed between the seal gasket and the adaptor. The invention also provides an anaesthesia machine which comprises the one-way valve, and the one-way valve is arranged on an air inlet of the anaesthesia machine.

Description

Check valve and anesthetic machine
Technical field
The present invention relates to the valve field, in particular to a kind of check valve and anesthetic machine.
Background technology
After anesthetic machine was died, anesthetic gases leakages that easily reflux polluted operating room, so the general check valve that prevents gas backstreaming that all is provided with on the anesthetic machine in the anesthetic machine.
In realizing process of the present invention, the inventor finds that the one-way sealing effect of existing check valve is unstable.
Summary of the invention
The present invention aims to provide a kind of check valve, can solve the unsettled problem of one-way sealing effect of existing check valve.
In an embodiment of the present invention, provide a kind of check valve, it comprises: valve body, its inside are provided with the first inner passage that is in communication with the outside, and the end of valve body has the first end air inlet A of the first inner passage; Adaptor is arranged in the first inner passage, and it comprises: the second inner passage, and it is communicated with the first inner passage, and side direction air inlet D is arranged on the side direction of adaptor; The second end air inlet C and gas outlet B lay respectively at two ends, the second inner passage; Sealing ring is set in outside the adaptor, and is arranged between valve body and the adaptor; Sealing gasket is arranged between first end air inlet A and the second end air inlet C; Shape and subgasket edges that sealing gasket has suitable sealing first end air inlet A have the gap of giving vent to anger; Elastomeric element is pressed between sealing gasket and the adaptor.
Preferably, elastomeric element is holddown spring.
Preferably, sealing gasket is hexagon.
Preferably, adaptor has mounting groove, and adaptor is connected with valve body by mounting groove.
Preferably, be provided with brace table in the valve body, sealing gasket is arranged between brace table and the second end air inlet C.
Preferably, valve body is axially run through along valve body in the first inner passage.
Preferably, adaptor is axially run through along adaptor in the second inner passage.
Preferably, check valve is anesthetic machine air inlet check valve.
The present invention also provides a kind of anesthetic machine, and anesthetic machine comprises foregoing check valve, and check valve is arranged on the air inlet of anesthetic machine.
Because check valve is provided with sealing gasket, it is arranged between first end air inlet A and the second end air inlet C; Shape and subgasket edges that sealing gasket has suitable sealing first end air inlet A have the gap of giving vent to anger; Elastomeric element, be pressed between sealing gasket and the adaptor, so, after anesthetic machine is died, first end air inlet A place shut off gas, first end air inlet A place pressure is zero, gas in elastomeric element and the check valve forces sealing gasket 2 to move to first end air inlet A all to the sealing gasket effect, the first inner passage in the sealing gasket finally sealed valve body 1, therefore just can prevent that gas is revealed by first end air inlet A backflow in the check valve, and then reach the stable of one-way sealing effect.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 schematically shows the sectional structure according to the check valve of the embodiment of the invention;
Fig. 2 schematically shows a kind of structure of the sealing gasket among Fig. 1.
The specific embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Fig. 1 schematically shows the sectional structure according to the check valve of the embodiment of the invention.As shown in the figure, in an embodiment of the present invention, provide a kind of check valve, it comprises:
Valve body 1 for example is cylindrical shape, and the centre is cavity, and valve body 1 inside is provided with the first inner passage 11 that is in communication with the outside, and the end of valve body 1 has the first end air inlet A of the first inner passage 11.
Adaptor 4 for example is cylindrical shape, and the centre is cavity, is arranged in the first inner passage 11.Adaptor 4 can be arranged in the first inner passage 11 by various suitable methods, for example be socketed in the first inner passage 11, preferably, adaptor 4 has mounting groove 45, adaptor 4 is connected with valve body 1 by mounting groove 45, like this, adaptor 4 is locked with the position relationship of valve body 1, is conducive to the stable of whole check valve.Adaptor 4 comprises: the second inner passage 42, and it is communicated with the first inner passage 11; Side direction air inlet D is arranged on the side direction of adaptor 4, for example, is arranged on the sidewall of adaptor 4; The second end air inlet C and gas outlet B lay respectively at two ends, the second inner passage;
Sealing ring 5 is set in outside the adaptor 4, and is arranged between valve body 1 and the adaptor 4, and for example, sealing ring 5 is arranged in the mounting groove 45, certainly, can also be arranged on other correct positions.Its role is to make form sealing between valve body 1 and the adaptor 4, prevent that anesthetic gases is from revealing between valve body 1 and the adaptor 4.
Sealing gasket 2 is arranged between first end air inlet A and the second end air inlet C; They can various suitable method settings.Preferably, be provided with brace table 13 in the valve body 1, sealing gasket 2 is arranged between brace table 13 and the second end air inlet C, and for example, sealing gasket 2 is arranged on the brace table 13, like this, is convenient to support sealing gasket 2.Sealing gasket 2 has the shape of suitable sealing first end air inlet A, for example, sealing gasket 2 has the effective sealing area of sealing first end air inlet A, and as shown in Figure 2, sealing gasket 2 edges have the gap of giving vent to anger 21, the effect of gap 21 of giving vent to anger is, when sealing gasket 2 left first end air inlet A, gas entered the second end air inlet C from the gap 21 of giving vent to anger.The gap 21 of giving vent to anger can be various shapes, and preferably, sealing gasket 2 is hexagon, like this, be convenient to processing, and permeability is good, can satisfy enough gas and enter the second end air inlet C from the gap 21 of giving vent to anger.
Elastomeric element 3 is pressed between sealing gasket 2 and the adaptor 4.Preferably, elastomeric element 3 is holddown spring.Compare with other forms of elastomeric element, holddown spring is not only simple in structure, cost is low, and can make the check valve sealing property not be subjected to the impact of check valve direction and angle, check valve can keep flat, and is upright, tilt, because no matter what angle of holddown spring is placed, it all has pressuring action to first end air inlet A, all can guarantee one-way sealing.
Under the normal state of ventilation, from first end air inlet A air inlet, gas push sealing gasket 2,3 compressions of sealing gasket 2 compressing elastomeric elements, air-flow enters check valve, when air-flow promotes sealing gasket 2 until spacing by the second end air inlet C of adaptor 4, can not continue mobile, this moment, sealing gasket 2 blocked the second end air inlet C of adaptor 4, and gas flows out from side direction air inlet D to gas outlet B.
After anesthetic machine is died, first end air inlet A mouth place shut off gas, first end air inlet A place pressure is zero, gas in elastomeric element 3 and the check valve is all to sealing gasket 2 effects, force sealing gasket 2 to move to first end air inlet A, make sealing gasket 2 be in the position that seals first end air inlet A, the first inner passage in the finally sealed valve body 1, therefore just can prevent that gas is revealed by first end air inlet A backflow in the check valve, and then reach the stable of one-way sealing effect.
Preferably, valve body 1 is axially run through along valve body 1 in the first inner passage; Adaptor 4 is axially run through along adaptor 4 in the second inner passage.Like this, be convenient to processing.
Preferably, check valve is anesthetic machine air inlet check valve.Check valve of the present invention can be applicable to anesthetic machine air inlet check valve, like this, can stably realize preventing gas backstreaming by one-way sealing, and certainly, check valve of the present invention also can be applicable to other fluid one-way sealing control.
The present invention also provides a kind of anesthetic machine, and anesthetic machine comprises foregoing check valve, and check valve is arranged on the air inlet of anesthetic machine.
From above description; can find out; the above embodiments of the present invention have realized following technique effect: the present invention effectively avoids and prevents gas backstreaming, has protected operating room not polluted stable performance by remaining anesthetic gases; good sealing effect; and the recipient is not to restriction, and check valve can keep flat, and is upright; tilt, all can guarantee one-way sealing property.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (9)

1. a check valve is characterized in that, comprising:
Valve body (1), its inside are provided with the first inner passage (11) that is in communication with the outside, and the end of described valve body (1) has the first end air inlet A of described the first inner passage (11);
Adaptor (4) is arranged in described the first inner passage (11), and it comprises:
The second inner passage (42), it is communicated with described the first inner passage (11),
Side direction air inlet D is arranged on the side direction of described adaptor (4);
The second end air inlet C and gas outlet B lay respectively at two ends, described the second inner passage (42);
Sealing ring (5) is set in outside the described adaptor (4), and is arranged between described valve body (1) and the described adaptor (4);
Sealing gasket (2) is arranged between described first end air inlet A and the described the second end air inlet C; Shape and described sealing gasket (2) edge that described sealing gasket (2) has the described first end air inlet A of suitable sealing have the gap of giving vent to anger (21);
Elastomeric element (3) is pressed between described sealing gasket (2) and the described adaptor (4).
2. check valve according to claim 1 is characterized in that,
Described elastomeric element (3) is holddown spring.
3. check valve according to claim 1 is characterized in that,
Described sealing gasket (2) is hexagon.
4. check valve according to claim 1 is characterized in that,
Described adaptor (4) has mounting groove (45), and described adaptor (4) is connected with described valve body (1) by mounting groove (45).
5. check valve according to claim 1 is characterized in that,
Be provided with brace table (13) in the described valve body (1), described sealing gasket (2) is arranged between described brace table (13) and the described the second end air inlet C.
6. check valve according to claim 1 is characterized in that,
Described valve body (1) is axially run through along described valve body (1) in described the first inner passage (11).
7. check valve according to claim 1 is characterized in that,
Described adaptor (4) is axially run through along described adaptor (4) in described the second inner passage (42).
8. according to claim 1 to 7 each described check valves, it is characterized in that,
Described check valve is anesthetic machine air inlet check valve.
9. an anesthetic machine is characterized in that,
Described anesthetic machine comprises each described check valve in the claim 1 to 7, and described check valve is arranged on the air inlet of described anesthetic machine.
CN 200910088573 2009-07-06 2009-07-06 One-way valve and anaesthesia machine Expired - Fee Related CN101943279B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200910088573 CN101943279B (en) 2009-07-06 2009-07-06 One-way valve and anaesthesia machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200910088573 CN101943279B (en) 2009-07-06 2009-07-06 One-way valve and anaesthesia machine

Publications (2)

Publication Number Publication Date
CN101943279A CN101943279A (en) 2011-01-12
CN101943279B true CN101943279B (en) 2013-02-20

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Application Number Title Priority Date Filing Date
CN 200910088573 Expired - Fee Related CN101943279B (en) 2009-07-06 2009-07-06 One-way valve and anaesthesia machine

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102600539B (en) * 2011-12-14 2014-09-24 深圳市科曼医疗设备有限公司 ACGO (auxiliary common gas outlet) gas pressure recoil preventer
CN103182129B (en) 2011-12-30 2015-12-09 北京谊安医疗系统股份有限公司 Bypass valve
CN103462718A (en) * 2013-09-25 2013-12-25 苏州华恒医用器械有限公司 Rapid moisture plug connector

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2186835Y (en) * 1993-12-29 1995-01-04 重庆钢铁(集团)公司型钢厂 Automatic one-way valve
US5404904A (en) * 1993-09-24 1995-04-11 Cooper Industries, Inc. Adjustable control valve with limited adjustment range and self locking means
CN2730399Y (en) * 2004-09-02 2005-10-05 上海力申科学仪器有限公司 Zero-starting, single-direction gas feeding device used for anaesthesia apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5404904A (en) * 1993-09-24 1995-04-11 Cooper Industries, Inc. Adjustable control valve with limited adjustment range and self locking means
CN2186835Y (en) * 1993-12-29 1995-01-04 重庆钢铁(集团)公司型钢厂 Automatic one-way valve
CN2730399Y (en) * 2004-09-02 2005-10-05 上海力申科学仪器有限公司 Zero-starting, single-direction gas feeding device used for anaesthesia apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP特开平8-200989A 1996.08.09

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