CN103182139B - Medical reversal valve - Google Patents
Medical reversal valve Download PDFInfo
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- CN103182139B CN103182139B CN201110457185.5A CN201110457185A CN103182139B CN 103182139 B CN103182139 B CN 103182139B CN 201110457185 A CN201110457185 A CN 201110457185A CN 103182139 B CN103182139 B CN 103182139B
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- cannelure
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Abstract
The present invention discloses a kind of medical reversal valve, comprise valve body, valve gap, spool, valve gap is arranged on valve body top, spool is arranged between valve body and valve gap, there is air inlet cavity and cavity of supplying gas in valve body, in valve gap, there is gas passage, valve body is also provided with for being communicated with gas passage and the first cannelure of cavity of supplying gas, have the second cannelure with one heart on the first cannelure, and the second cannelure extends to air inlet inside cavity, corresponding first cannelure arranges closure part on spool, under normal conditions, closure part is positioned at the second upside of the ring groove, and be in the first cannelure near gas passage one end, to make its shutoff gas passage, and make air inlet cavity form path with cavity of supplying gas, when spool is stressed press down time, closure part to be positioned at below the second cannelure and to be in the first cannelure one end near cavity of supplying gas, and to make its shutoff supply gas cavity, and makes air inlet cavity and gas passage form path.This medical reversal valve has simple, the cost-saving advantage of structure.
Description
Technical field
The present invention relates to medical instruments field, particularly relate to a kind of medical reversal valve.
Background technology
Anesthesia respirator is hospital when performing the operation, and to the important medical apparatus and instruments that patient anaesthetizes sb. generally, its major function is carried out inhalation anesthetic, oxygen supply for patient and provides auxiliary or control to breathe; Anesthesia evaporator is the important composition parts on anesthetic machine, and it provides stable by anesthetic machine to patient, concentration anaesthetizes mist accurately.
Anesthesia respirator is connected by medical reversal valve with anesthesia evaporator.When access failure vaporizer, anesthetic machine flows to the gas of patient by medical reversal valve, then anesthetic machine downstream is entered, now medical reversal valve should ensure that gas is not revealed, Leakage Gas will cause the wasting of resources, and the gas that should ensure to flow through medical reversal valve without vapour lock or vapour lock very little, such guarantee is to the unobstructed conveying gas of patient; When after connection vaporizer, gas is by entering vaporizer completely after medical reversal valve, after the vaporization chamber evaporation in vaporizer, being mixed into anesthetic gases, enter anesthetic machine downstream by medical reversal valve again, be delivered to patient end, now, medical reversal valve should ensure that anesthetis is not revealed, anesthetis leaks and is not only a kind of waste, anaesthetizes especially to the one of operative doctor, very big to the security implication of the quality of performing the operation and patient.
Traditional medical reversal valve is primarily of spool, gland, valve gap, valve body composition, gland and spool all have respective reposition element, the stroke of gland is controlled by reposition element, and realize whether connecting vaporizer, structure so makes amount of parts more, structure is comparatively complicated, and the air-tightness of medical reversal valve entirety also can be caused thus to be difficult to the defect ensured; Simultaneously parts are more, also correspondingly improve processing cost.
Summary of the invention
The object of the invention is to solve traditional medical reversal valve and there is complex structure, processing cost is higher, air-tightness is difficult to the defects such as guarantee problem, a kind of medical reversal valve is provided, it has, and structure is simple, parts are less, advantage that cost-saving, air-tightness easily ensures.
The object of the invention is to be achieved through the following technical solutions:
A kind of medical reversal valve, comprise valve body, valve gap, also comprise spool and reposition element thereof, and both are installed between valve body and valve gap, there is air inlet cavity and cavity of supplying gas in described valve body, in described valve gap, there is gas passage, described valve body is also provided with for being communicated with gas passage and the first cannelure of cavity of supplying gas, have the second cannelure with one heart on described first cannelure, described second cannelure extends in described air inlet cavity, corresponding first cannelure arranges closure part on described spool, and described closure part is positioned at the first cannelure, under normal conditions, closure part is positioned at the second upside of the ring groove, and the one end be near gas passage in the first cannelure, to make its shutoff gas passage, and make air inlet cavity form path with cavity of supplying gas.
Further, described valve body has the 3rd cannelure, the first cannelure, cavity of supplying gas from top to bottom successively, described inlet chamber body is positioned at the side of described first cannelure, have the second cannelure with one heart on described first cannelure, and described second cannelure extends in described air inlet cavity, be connected to make both.
Further, described valve gap adopts hollow structure, and to make its inside have gas passage, described valve gap upper end inwardly has the spacing projection of spool, and lower end has the external screw thread for connecting valve body, and described externally threaded root is provided with cannelure.
Further, described spool top has boss; Have disc in the middle part of described spool, on described disc, ring cutting is fluted, and arranges sealing ring in described groove, described disc and sealing ring composition closure part; Described spool bottom centre position upwards extends the mounting groove had for installing its reposition element.
Further, described reposition element is spring.
Further, described 3rd cannelure inwall has the female thread for connecting valve gap, is threaded connection air inlet pipe joint in the outer end of described air inlet cavity.
Further, the section of the upper end of described valve gap is hexagon, is provided with 0 RunddichtringO in described cannelure.
Further, described spool entirety is in cylindrical, the top of described spool, lower periphery even rip cutting four straight flange, to make to form gas circuit between spool and valve gap, and positioning action is played in valve core movement process, the external diameter of described spool is less than the internal diameter of valve gap, to make to form gap between spool and valve gap.
Further, described first cannelure internal diameter is less than the second cannelure internal diameter, and described closure part Outside Dimensions and the first cannelure internal diameter match.
Further, described spring one end is arranged on supplies gas in cavity, the other end is arranged in mounting groove, described valve gap is enclosed within described spool top peripheral, and screw in the 3rd cannelure at valve body by Compress Spring, to make boss hold out against projection, closure part is positioned at the second upside of the ring groove and is in the first cannelure one end near gas passage.
Beneficial effect of the present invention is: by arranging a closure part on spool, avoid the way that gland and spool are provided separately by traditional medical reversal valve, so make structurally simpler, processing, install more convenient, do not need to arrange two back-moving springs simultaneously yet, only need a back-moving spring can complete the reset work of spool in motor process, save cost, when spool is in the normal state down while pressing down (namely spool is not stressed), the closure part be made up of disc and sealing ring is positioned at the second upside of the ring groove, and the one end be near gas passage in the first cannelure, because closure part Outside Dimensions and the first cannelure internal diameter match, the first cannelure of this part is made to be in by sealed condition, can not enter in gas passage to make gas, and then can not vaporizer be entered, therefore this state is the state of access failure vaporizer, gas enters the second cannelure from air inlet cavity, and then enter the first annular groove portion be positioned at below it, gas enters cavity of supplying gas subsequently, and then enter anesthetic machine downstream, when spool is stressed press down time, spool overcomes spring force and moves downward, closure part is made to move to below the second cannelure, and be positioned at the first cannelure one end near cavity of supplying gas, because closure part Outside Dimensions and the first cannelure internal diameter match, the first cannelure of this part is made to be in by sealed condition, cavity of supplying gas can not be entered to make gas, this state is connect the state of vaporizer, gas enters the second cannelure from air inlet cavity, and then enter the first annular groove portion of the side of being located thereon, gas enters gas passage subsequently, and then export vaporizer to from valve gap, closure part has sealing ring, the air-tightness in gas course of conveying can be ensured, owing to only having spool part movement, compare traditional core assembly and the multiple part movement of gland, air-tightness more easily ensures.Contrast prior art, the advantage that this medical reversal valve has that structure is simple, parts are less, cost-saving, air-tightness easily ensures.
Accompanying drawing explanation
According to drawings and embodiments the present invention is described in further detail below.
Fig. 1 is the schematic perspective view of medical reversal valve of the present invention;
Fig. 2 is for the A-A shown in Fig. 1 is to cross-sectional schematic;
Fig. 3 is the cross-sectional schematic of the valve body shown in Fig. 2;
Fig. 4 is the schematic perspective view of the valve gap shown in Fig. 2;
Fig. 5 is the cross-sectional schematic of the valve gap shown in Fig. 2;
Fig. 6 is the schematic perspective view of the spool shown in Fig. 2;
Fig. 7 is the cross-sectional schematic of the spool shown in Fig. 2.
In figure:
1, valve body; 11, air inlet cavity; 12, to supply gas cavity; 13, the first cannelure; 14, the second cannelure; 15, the 3rd cannelure; 16, the 4th cannelure;
2, valve gap; 21, gas passage; 22, protruding; 23, cannelure;
3, spool; 31, closure part; 311, disc; 312, sealing ring; 32, boss; 33, mounting groove;
4, pipe joint; 5, spring; 6, O RunddichtringO; 7, escape pipe joint.
Detailed description of the invention
As shown in Fig. 1 ~ 2, in the present embodiment, medical reversal valve of the present invention, comprise valve body 1, valve gap 2, spool 3, valve gap 2 is arranged on valve body 1 top, spool 3 is arranged between valve body 1 and valve gap 2, there is in valve body 1 air inlet cavity 11 and cavity 12 of supplying gas, there is in valve gap 2 gas passage 21, valve body 1 is also provided with the first cannelure 13 for being communicated with gas passage 21 and cavity 12 of supplying gas, have the second cannelure 14 with one heart on the first cannelure, and the second cannelure 14 extends to air inlet cavity 11 inside, corresponding first cannelure 13 arranges closure part 31 on spool 3, under normal conditions, closure part 31 is positioned at the second upside of the ring groove, and the one end be near gas passage 21 in the first cannelure, to make its shutoff gas passage 21, and make air inlet cavity 11 form path with cavity 12 of supplying gas, when spool 3 is stressed press down time, closure part 31 to be positioned at below the second cannelure and to be in the first cannelure one end near cavity 12 of supplying gas, and to make its shutoff supply gas cavity 12, and makes air inlet cavity 11 and gas passage 21 form path.
As shown in Figure 1, when vaporizer connected by medical reversal valve of the present invention, namely two valve gaps 2 all mount vaporizer, it is inner that gas enters valve body 1 from pipe joint 4, vaporizer is entered again from first valve gap 2, then again enter valve body from vaporizer through second valve gap 2, finally export from escape pipe joint 7.Wherein valve gap top peripheral is designed to hexagonal structure, and its Main Function facilitates the assembling between itself and valve body, and each medical reversal valve can mount one or more vaporizer (each vaporizer needs to match with two valve gaps simultaneously) simultaneously.
As shown in Figure 3, give a kind of embodiment of concrete valve body, valve body 1 is concentric successively from top to bottom has the 3rd cannelure 15, first cannelure 13, cavity 12 of supplying gas, air inlet cavity 11 is positioned at the side of the first cannelure 13, have the second cannelure 14 with one heart on the first cannelure 13, and the second cannelure 14 extends in air inlet cavity 11, be connected to make both.
First cannelure 13 internal diameter is less than the second cannelure 14 internal diameter, closure part 31 Outside Dimensions and the first cannelure 13 internal diameter match, when above closure part 31 is positioned at the second cannelure 14, actual closure part 31 makes part first cannelure above the second cannelure 14 be in sealed condition, makes gas passage 21 be in sealed condition further; When closure part 31 is positioned at below the second cannelure 14, closure part 31 makes part first cannelure below the second cannelure 14 be in sealed condition, and the cavity 12 that makes further to supply gas is in sealed condition.
Have the 4th cannelure 16 in the outer end of air inlet cavity 11, its inwall has female thread, for the pipe joint 4 that is threaded.
3rd cannelure 15 inwall has female thread, to be threaded valve gap 2 for making valve body 1.
As shown in Figures 4 and 5, give a kind of embodiment of concrete valve gap, valve gap 2 adopts hollow structure, to make its inside have gas passage 21, its top has gas outlet, and inwardly has protruding 22, bottom periphery has external screw thread, for the valve body 1 that is threaded, described externally threaded root is provided with cannelure 23, O RunddichtringO 6 is installed in cannelure 23; Protruding 22 pairs of spools 3 play position-limiting action in motor process.
As shown in figs. 6-7, give a kind of embodiment of concrete spool, spool 3 entirety is in cylindrical, the top of spool 3, lower periphery even rip cutting four straight flange, positioning action is played in spool 3 motor process, the straight flange on spool top can make to form gas circuit between spool and valve gap, and the external diameter of spool 3 is less than the internal diameter of valve gap 2, to make to form gap between spool 3 and valve gap 2.
Spool 3 top has boss 32; Have disc 311 in the middle part of spool 3, on disc 311, ring cutting is fluted, and arranges sealing ring 312 in described groove, and disc 311 and sealing ring 312 form closure part 31; Spool 3 bottom centre position upwards extends the mounting groove 33 had for installing its back-moving spring.
The width of disc 311 should be corresponding with the height of the second cannelure 14, and namely after spool is depressed a bit of distance, namely closure part 31 enters below the second cannelure 14, although the second cannelure processing request is herein higher, spool processing is relatively simple.
Above-described valve body, valve gap, spool are preferred structure, but its structure is not limited thereto, and also can have other versions.
The assembling process of preferred medical reversal valve above: 1) sealing ring 312 is loaded in the groove on disc 311, and O RunddichtringO 6 is loaded in cannelure 23, 2) one end of spring 5 is loaded in mounting groove 33, then spool 3 and spring 5 are loaded valve body 1 in the lump, spring 5 other end is loaded supplies gas in cavity 12, 3) valve gap 2 is enclosed within the periphery on spool 3 top, the 3rd cannelure 15 is screwed in by Compress Spring 5, and at junction coating fluid sealant, closure part 31 is made to be positioned at the second upside of the ring groove, and near one end of gas passage 21 in the first cannelure, 4) pipe joint 4 is screwed in the 4th cannelure 16.Only give the component mounting method of medical reversal valve air inlet side herein, the parts of its side of giving vent to anger take this installation method too.
When spool 3 is in the normal state down while pressing down (namely spool 3 is not stressed), the closure part 31 be made up of disc 311 and sealing ring 312 is positioned at above the second cannelure 14, and be in the first cannelure 13 near one end of gas passage 21, because closure part 31 Outside Dimensions and the first cannelure 13 internal diameter match, the first cannelure of this part is made to be in by sealed condition, can not enter in gas passage 21 to make gas, and then can not vaporizer be entered, therefore this state is the state of access failure vaporizer, gas enters the second cannelure 14 from air inlet cavity 11, and then enter the first annular groove portion be positioned at below it, gas enters cavity 12 of supplying gas subsequently, anesthetic machine downstream is flowed to again by medical reversal valve pipeline and joint (not shown).
When spool 3 is stressed press down time, spool 3 overcomes spring force and moves downward, closure part 31 is made to move to below the second cannelure 14, and be positioned at the first cannelure one end near cavity 12 of supplying gas, because closure part 31 Outside Dimensions and the first cannelure 13 internal diameter match, the first cannelure of this part is made to be in by sealed condition, cavity 12 of supplying gas can not be entered to make gas, this state is connect the state of vaporizer, gas enters the second cannelure 14 from air inlet cavity 11, and then enter the first annular groove portion of the side of being located thereon, gas enters gas passage 21 subsequently, and then export vaporizer to from valve gap 2, the gas exported from vaporizer enters anesthetic machine downstream by medical reversal valve again.
Claims (10)
1. a medical reversal valve, comprise valve body (1), valve gap (2), it is characterized in that: also comprise spool (3) and reposition element thereof, and both are installed between valve body (1) and valve gap (2), there is in described valve body (1) air inlet cavity (11) and cavity of supplying gas (12), there is in described valve gap (2) gas passage (21), described valve body (1) is also provided with the first cannelure (13) for being communicated with gas passage (21) and cavity of supplying gas (12), concentric have the second cannelure (14) described first cannelure (13) is upper, described second cannelure (14) extends in described air inlet cavity (11), corresponding first cannelure (13) arranges closure part (31) on described spool (3), and described closure part (31) are positioned at the first cannelure (13), under normal conditions, closure part (31) is positioned at the second cannelure (14) top, and the one end be near gas passage (21) in the first cannelure, to make its shutoff gas passage (21), and make air inlet cavity (11) form path with cavity (12) of supplying gas.
2. medical reversal valve according to claim 1, it is characterized in that: described valve body (1) has the 3rd cannelure (15), the first cannelure (13), cavity of supplying gas (12) from top to bottom successively, described air inlet cavity (11) is positioned at the side of described first cannelure (13), concentric have the second cannelure (14) described first cannelure (13) is upper, and described second cannelure (14) extends in described air inlet cavity (11), be connected to make both.
3. medical reversal valve according to claim 1, it is characterized in that: described valve gap (2) adopts hollow structure, to make its inside, there is gas passage (21), described valve gap (2) upper end inwardly has the spacing projection of spool (22), lower end has the external screw thread for connecting valve body, and described externally threaded root is provided with the 3rd cannelure.
4. medical reversal valve according to claim 1, is characterized in that: described spool (3) top has boss (32); Described spool (3) middle part has disc (311), the upper ring cutting of described disc (311) is fluted, and sealing ring (312) is set in described groove, described disc (311) and sealing ring (312) composition closure part (31); Described spool (3) bottom centre position upwards extends the mounting groove (33) had for installing its reposition element.
5. medical reversal valve according to claim 1, is characterized in that: described reposition element is spring (5).
6. medical reversal valve according to claim 2, it is characterized in that: described 3rd cannelure (15) inwall has the female thread for connecting valve gap, is threaded connection air inlet pipe joint (4) in the outer end of described air inlet cavity (11).
7. medical reversal valve according to claim 3, is characterized in that: the section of the upper end of described valve gap (2) is hexagon, is provided with O RunddichtringO (6) in described 3rd cannelure.
8. medical reversal valve according to claim 4, it is characterized in that: described spool (3) entirety is in cylindrical, the top of described spool (3), lower periphery even rip cutting four straight flange, to make to form gas circuit between spool and valve gap, and positioning action is played in valve core movement process, the external diameter of described spool (3) is less than the internal diameter of valve gap (2), to make to form gap between spool (3) and valve gap (2).
9. according to the arbitrary described medical reversal valve of claim 2 or 6, it is characterized in that: described first cannelure (13) internal diameter is less than the second cannelure (14) internal diameter, and described closure part (31) Outside Dimensions and the first cannelure (13) internal diameter match.
10. medical reversal valve according to claim 5, it is characterized in that: described spring (5) one end is arranged in cavity of supplying gas (12), the other end is arranged in mounting groove (33), described valve gap (2) is enclosed within described spool (3) top peripheral, and spring (5) is compressed at the 3rd cannelure (15) of valve body by screwing in, to make boss (32) hold out against projection (22), closure part (31) are positioned at the second cannelure (14) top and are in the first cannelure one end near gas passage (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110457185.5A CN103182139B (en) | 2011-12-30 | 2011-12-30 | Medical reversal valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110457185.5A CN103182139B (en) | 2011-12-30 | 2011-12-30 | Medical reversal valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103182139A CN103182139A (en) | 2013-07-03 |
| CN103182139B true CN103182139B (en) | 2016-02-24 |
Family
ID=48673747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110457185.5A Active CN103182139B (en) | 2011-12-30 | 2011-12-30 | Medical reversal valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103182139B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880284B (en) * | 2014-02-28 | 2019-10-29 | 北京谊安医疗系统股份有限公司 | Interior airtight test device |
| CN104880281B (en) * | 2014-02-28 | 2019-10-29 | 北京谊安医疗系统股份有限公司 | Outer airtight test device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3502588A1 (en) * | 1985-01-26 | 1986-08-07 | Shoketsu Kinzoku Kogyo K.K., Tokio/Tokyo | Reversing valve |
| US6120302A (en) * | 1994-10-25 | 2000-09-19 | Knorr-Bremse Systeme Fur Nutzfahrzeuge | Switching valve for a multiple-circuit vehicle brake system |
| CN101311587A (en) * | 2007-12-29 | 2008-11-26 | 北京谊安医疗系统股份有限公司 | Pneumatic control proportioning time-delay change valve |
| CN101706185A (en) * | 2009-11-30 | 2010-05-12 | 清华大学 | Self-operated three-way reversing valve |
-
2011
- 2011-12-30 CN CN201110457185.5A patent/CN103182139B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3502588A1 (en) * | 1985-01-26 | 1986-08-07 | Shoketsu Kinzoku Kogyo K.K., Tokio/Tokyo | Reversing valve |
| US6120302A (en) * | 1994-10-25 | 2000-09-19 | Knorr-Bremse Systeme Fur Nutzfahrzeuge | Switching valve for a multiple-circuit vehicle brake system |
| CN101311587A (en) * | 2007-12-29 | 2008-11-26 | 北京谊安医疗系统股份有限公司 | Pneumatic control proportioning time-delay change valve |
| CN101706185A (en) * | 2009-11-30 | 2010-05-12 | 清华大学 | Self-operated three-way reversing valve |
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| Publication number | Publication date |
|---|---|
| CN103182139A (en) | 2013-07-03 |
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