CN103182139A - Medical reversing valve - Google Patents
Medical reversing valve Download PDFInfo
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- CN103182139A CN103182139A CN2011104571855A CN201110457185A CN103182139A CN 103182139 A CN103182139 A CN 103182139A CN 2011104571855 A CN2011104571855 A CN 2011104571855A CN 201110457185 A CN201110457185 A CN 201110457185A CN 103182139 A CN103182139 A CN 103182139A
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Abstract
The invention discloses a medical reversing valve. The medical reversing valve comprises a valve body, a valve cover and a valve core, wherein the valve cover is mounted at the upper part of the valve body; the valve core is mounted between the valve body and the valve cover; the valve body is provided with a gas inlet cavity and a gas supply cavity; a gas channel is arranged in the valve cover; the valve body is provided with a first annular groove for communicating the gas channel with the gas supply cavity; a second annular groove is concentrically formed on the first annular groove and extends into the gas inlet cavity; a plugging part corresponding to the first annular groove is arranged on the valve core; under a normal state, the plugging part is positioned above the second annular groove and at one end, near the gas channel, of the first annular groove, so that the gas channel can be plugged by the plugging part and the gas inlet cavity and the gas supply cavity form a passage; and when the valve core is stressed and pressed down, the plugging part is positioned below the second annular groove and at one end, near the gas supply cavity, of the first annular groove, so that the gas supply cavity can be plugged by the plugging part and the gas inlet cavity and the gas channel form a passage. The medical reversing valve has the advantages of simple structure and cost saving.
Description
Technical field
The present invention relates to medical instruments field, relate in particular to a kind of medical reversal valve.
Background technology
Anesthesia respirator is hospital when undergoing surgery, and to the important medical apparatus and instruments that patient anaesthetizes sb. generally, its major function is to suck anesthetis, oxygen supply and provide auxiliary or control is breathed for patient; Anesthesia evaporator is the important composition parts on the anesthetic machine, and it provides stable, concentration to anaesthetize mist accurately by anesthetic machine to patient.
Anesthesia respirator links to each other by medical reversal valve with anesthesia evaporator.When the access failure vaporizer, anesthetic machine flows to patient's gas by medical reversal valve, enter the anesthetic machine downstream then, this moment, medical reversal valve should guarantee that gas do not reveal, gas leaks will cause the wasting of resources, and the gas of the medical reversal valve that should guarantee to flow through does not have vapour lock or vapour lock is very little, could guarantee the unobstructed conveying gas to patient like this; After connecting vaporizer, gas enters vaporizer after by medical reversal valve fully, the evaporation of vaporization chamber in vaporizer, be mixed into anesthetic gases after, enter the anesthetic machine downstream by medical reversal valve again, be delivered to patient end, at this moment, medical reversal valve should guarantee that anesthetis do not reveal, anesthetis leaks and is not only a kind of waste, and is especially to a kind of anesthesia of operative doctor, very big to the quality of operation and patient's security implication.
Traditional medical reversal valve mainly is made up of spool, gland, valve gap, valve body, gland and spool all have reposition element separately, control the stroke of gland by reposition element, and whether realization connects vaporizer, so structure makes amount of parts more, structure is comparatively complicated, the defective that also can cause the air-tightness of medical reversal valve integral body to be difficult to guarantee thus; Parts are more simultaneously, also the corresponding processing cost that improved.
Summary of the invention
The objective of the invention is to solve traditional medical reversal valve and have complex structure, processing cost is higher, air-tightness is difficult to defectives such as guaranteeing problem, a kind of medical reversal valve is provided, its have simple in structure, parts are less, save cost, advantage that air-tightness guarantees easily.
The objective 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 the valve gap, has the air inlet cavity in the described valve body and the cavity of supplying gas, has gas passage in the described valve gap, described valve body also is provided with for first cannelure that is communicated with gas passage and the cavity of supplying gas, concentric second cannelure that has on described first cannelure, described second cannelure extends in the described air inlet cavity, corresponding first cannelure arranges the closure part at described spool, and described closure part is positioned at first cannelure, and under normal conditions, the closure part is positioned at second upside of the ring groove, and be in first cannelure a end near gas passage, so that its shutoff gas passage, and make air inlet cavity and the cavity of supplying gas form path.
Further, described valve body has the 3rd cannelure, first cannelure, the cavity of supplying gas from top to bottom successively, described inlet chamber body is positioned at a side of described first cannelure, concentric second cannelure that has on described first cannelure, and described second cannelure extends in the described air inlet cavity, so that both are connected.
Further, described valve gap adopts hollow structure, so that its inside has gas passage, described valve gap upper end inwardly has the projection of the spacing usefulness of spool, and the lower end has for the external screw thread that connects valve body, is provided with cannelure at described externally threaded root.
Further, described spool top has boss; Described spool middle part has disc, and ring cutting is fluted on the described disc, and in described groove sealing ring is set, and described disc and sealing ring are formed the closure part; Described spool bottom centre position extends upward the mounting groove that has for its reposition element is installed.
Further, described reposition element is spring.
Further, described the 3rd cannelure inwall has for the female thread that connects valve gap, in the outer end of described air inlet cavity by the air inlet pipe joint that is threaded.
Further, the section of the upper end of described valve gap is hexagon, and 0 RunddichtringO is installed in the described cannelure.
Further, described spool integral body is the cylinder bodily form, the top of described spool, peripheral evenly rip cutting four straight flanges in bottom, so that form gas circuit between spool and the valve gap, and in the valve core movement process, play positioning action, the external diameter of described spool is less than the internal diameter of valve gap, so that form the gap between spool and the valve gap.
Further, the 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 are complementary.
Further, described spring one end is installed in the cavity of supplying gas, the other end is installed in the mounting groove, described valve gap is enclosed within periphery, described spool top, and by three cannelure of compression spring screw-in at valve body, so that boss holds out against projection, the closure part is positioned at second upside of the ring groove and is in first cannelure near an end of gas passage.
Beneficial effect of the present invention is: by a closure part is set at spool, the way of having avoided traditional medical reversal valve that gland and spool branch are arranged, so make structurally simpler, process, install more convenient, simultaneously do not need to arrange two back-moving springs yet, only need a back-moving spring can finish the reset work of spool in motor process, saved cost; When spool be in the normal state down when stressed pressing down (be spool not), the closure part of being made up of disc and sealing ring is positioned at second upside of the ring groove, and be in first cannelure a end near gas passage, because closure part Outside Dimensions and the first cannelure internal diameter are complementary, make first cannelure of this part be in by sealed condition, so that gas can not enter in the gas passage, and then can not enter vaporizer, so this state is the state of access failure vaporizer, gas enters second cannelure from the air inlet cavity, and then enter be positioned at its below the first cannelure part, gas enters the cavity of supplying gas subsequently, and then enters the anesthetic machine downstream; When spool is stressed when pressing down, spool overcomes spring force and moves downward, make the closure part move to second cannelure below, and be positioned at first cannelure near an end of the cavity of supplying gas, because closure part Outside Dimensions and the first cannelure internal diameter are complementary, make first cannelure of this part be in by sealed condition, so that gas can not enter the cavity of supplying gas, this state is for connecting the state of vaporizer, gas enters second cannelure from the air inlet cavity, and then the first cannelure part that enters the side of being located thereon, gas enters gas passage subsequently, and then exports vaporizer to from valve gap; Have sealing ring on the closure part, can guarantee the air-tightness in the gas course of conveying, owing to have only part movement of spool, compare a plurality of part movement of traditional core assembly and gland, easier assurance on air-tightness.The contrast prior art, the advantage that this medical reversal valve has is simple in structure, parts are less, save cost, air-tightness guarantees easily.
Description of drawings
The present invention is described in further detail with embodiment with reference to the accompanying drawings below.
Fig. 1 is the schematic perspective view of medical reversal valve of the present invention;
Fig. 2 is that 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.
Among the figure:
1, valve body; 11, air inlet cavity; 12, the cavity of supplying gas; 13, first cannelure; 14, second cannelure; 15, the 3rd cannelure; 16, the 4th cannelure;
2, valve gap; 21, gas passage; 22, projection; 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.
The specific embodiment
Shown in Fig. 1～2, in present embodiment, medical reversal valve of the present invention, comprise valve body 1, valve gap 2, spool 3, valve gap 2 is installed in valve body 1 top, spool 3 is installed between valve body 1 and the valve gap 2, have air inlet cavity 11 and the cavity 12 of supplying gas in the valve body 1, has gas passage 21 in the valve gap 2, also be provided with on the valve body 1 for being communicated with first cannelure 13 of gas passage 21 with the cavity 12 of supplying gas, concentric second cannelure 14 that has on first cannelure, and second cannelure 14 extends to air inlet cavity 11 inside, and corresponding first cannelure 13 arranges closure part 31 at spool 3, under normal conditions, closure part 31 is positioned at second upside of the ring groove, and be in the interior end near gas passage 21 of first cannelure, so that its shutoff gas passage 21, and make air inlet cavity 11 and the cavity 12 of supplying gas form paths; When spool 3 stressed pressing down, closure part 31 is positioned at second cannelure below and is in first cannelure near an end of the cavity 12 of supplying gas, the cavity 12 so that its shutoff is supplied gas, and make air inlet cavity 11 and gas passage 21 form path.
As shown in Figure 1, when medical reversal valve of the present invention is connected vaporizer, namely two valve gaps 2 all articulate vaporizer, gas enters valve body 1 inside from pipe joint 4, enter vaporizer from first valve gap 2 again, enter valve body from vaporizer again through second valve gap 2 then, at last from 7 outputs of escape pipe joint.Wherein valve gap top periphery design becomes hexagonal structure, and it mainly acts on the assembling that makes things convenient between itself and the valve body, and each medical reversal valve can articulate one or more vaporizers (each vaporizer needs match with two valve gaps simultaneously) simultaneously.
As shown in Figure 3, provided a kind of embodiment of concrete valve body, valve body 1 is concentric the 3rd cannelure 15, first cannelure 13, the cavity 12 of supplying gas of having successively from top to bottom, air inlet cavity 11 is positioned at a side of first cannelure 13, concentric second cannelure 14 that has on first cannelure 13, and second cannelure 14 extends in the air inlet cavity 11, so that both are connected.
First cannelure, 13 internal diameters are less than second cannelure, 14 internal diameters, closure part 31 Outside Dimensions and first cannelure, 13 internal diameters are complementary, when closure part 31 is positioned at second cannelure, 14 tops, actual closure part 31 makes that part of first cannelure of second cannelure, 14 tops be in sealed condition, further makes gas passage 21 be in sealed condition; When closure part 31 was positioned at second cannelure, 14 belows, closure part 31 made that part of first cannelure of second cannelure, 14 belows be in sealed condition, and further the feasible cavity 12 of supplying gas is in sealed condition.
Have the 4th cannelure 16 in the outer end of air inlet cavity 11, its inwall has female thread, is used for being threaded pipe joint 4.
The 3rd cannelure 15 inwalls have female thread, are used for making valve body 1 valve gap 2 that is threaded.
Shown in Fig. 4～5, provided a kind of embodiment of concrete valve gap, valve gap 2 adopts hollow structure, so that its inside has gas passage 21, its top has the gas outlet, and projection 22 is inwardly arranged, bottom periphery has external screw thread, be used for being threaded valve body 1, be provided with cannelure 23 at described externally threaded root, O RunddichtringO 6 is installed in cannelure 23; 22 pairs of spools 3 of projection play position-limiting action in motor process.
Shown in Fig. 6～7, provided a kind of embodiment of concrete spool, spool 3 integral body are the cylinder bodily form, the top of spool 3, peripheral evenly rip cutting four straight flanges in bottom, in spool 3 motor processs, play positioning action, the straight flange on spool top can make between spool and the valve gap and form gas circuit, and the external diameter of spool 3 is less than the internal diameter of valve gap 2, so that form the gap between spool 3 and the valve gap 2.
Spool 3 tops have boss 32; Spool 3 middle parts have disc 311, and ring cutting is fluted on the disc 311, and in described groove sealing ring 312 are set, and disc 311 and sealing ring 312 are formed closure part 31; Spool 3 bottom centre positions extend upward the mounting groove 33 that has for its back-moving spring is installed.
The width of disc 311 should be corresponding with the height of second cannelure 14, and namely after spool was depressed a bit of distance, closure part 31 namely entered second cannelure, 14 belows, though the second cannelure processing request herein is higher, spool processing is simple relatively.
Above-described valve body, valve gap, spool are preferred construction, but its structure is not limited thereto, and also other versions can be arranged.
More than the assembling process of preferred medical reversal valve: 1) sealing ring 312 is packed in the groove on the disc 311, and O RunddichtringO 6 packed in the cannelure 23,2) end of spring 5 is packed in the mounting groove 33, the valve body 1 of then spool 3 and spring 5 being packed in the lump, make spring 5 other ends pack into to supply gas in the cavity 12,3) valve gap 2 is enclosed within the periphery on spool 3 tops, screw in the 3rd cannelure 15 by compression spring 5, and at junction coating fluid sealant, make closure part 31 be positioned at second upside of the ring groove, and an end of close gas passage 21 in first cannelure, 4) pipe joint 4 is screwed in the 4th cannelure 16.Only provided the component mounting method of medical reversal valve air inlet side herein, the parts of its side of giving vent to anger are taked this installation method too.
When spool 3 be in the normal state down when stressed pressing down (be spool 3 not), the closure part of being made up of disc 311 and sealing ring 312 31 is positioned at second cannelure, 14 tops, and be in first cannelure 13 ends near gas passages 21, because closure part 31 Outside Dimensions and first cannelure, 13 internal diameters are complementary, make first cannelure of this part be in by sealed condition, so that gas can not enter in the gas passage 21, and then can not enter vaporizer, so this state is the state of access failure vaporizer, gas enters second cannelure 14 from air inlet cavity 11, and then enter be positioned at its below the first cannelure part, gas enters the cavity 12 of supplying gas subsequently, flows to the anesthetic machine downstream by medical reversal valve pipeline and joint (not shown) again.
When spool 3 stressed pressing down, spool 3 overcomes spring force and moves downward, make closure part 31 move to second cannelure, 14 belows, and be positioned at first cannelure near an end of the cavity 12 of supplying gas, because closure part 31 Outside Dimensions and first cannelure, 13 internal diameters are complementary, make first cannelure of this part be in by sealed condition, so that gas can not enter the cavity 12 of supplying gas, this state is for connecting the state of vaporizer, gas enters second cannelure 14 from air inlet cavity 11, and then the first cannelure part that enters the side of being located thereon, gas enters gas passage 21 subsequently, and then export vaporizer to from valve gap 2, enter the anesthetic machine downstream by medical reversal valve again from the gas of vaporizer output.
Claims (10)
1. 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 the valve gap (2), have air inlet cavity (11) and the cavity of supplying gas (12) in the described valve body (1), has gas passage (21) in the described valve gap (2), described valve body (1) also is provided with for first cannelure (13) that is communicated with gas passage (21) and the cavity of supplying gas (12), go up concentric second cannelure (14) that has at described first cannelure (13), described second cannelure (14) extends in the described air inlet cavity (11), corresponding first cannelure (13) arranges closure part (31) at described spool (3), and described closure part (31) are positioned at first cannelure (13), under normal conditions, closure part (31) is positioned at second cannelure (14) top, and be in first cannelure a end near gas passage (21), so that its shutoff gas passage (21), and make air inlet cavity (11) and the cavity (12) of supplying gas form path.
2. medical reversal valve according to claim 1, it is characterized in that: described valve body (1) has the 3rd cannelure (15), first cannelure (13), the cavity of supplying gas (12) from top to bottom successively, described air inlet cavity (11) is positioned at a side of described first cannelure (13), go up concentric second cannelure (14) that has at described first cannelure (13), and described second cannelure (14) extends in the described air inlet cavity (11), so that both are connected.
3. medical reversal valve according to claim 1, it is characterized in that: described valve gap (2) adopts hollow structure, so that its inside has gas passage (21), described valve gap (2) upper end inwardly has the projection (22) of the spacing usefulness of spool, the lower end has for the external screw thread that connects valve body, is provided with cannelure (23) at described externally threaded root.
4. medical reversal valve according to claim 1, it is characterized in that: described spool (3) top has boss (32); Described spool (3) middle part has disc (311), and it is fluted that described disc (311) is gone up ring cutting, and sealing ring (312) is set in described groove, and described disc (311) and sealing ring (312) are formed closure part (31); Described spool (3) bottom centre position extends upward the mounting groove (33) that has for its reposition element is installed.
5. medical reversal valve according to claim 1, it is characterized in that: described reposition element is spring (5).
6. medical reversal valve according to claim 2 is characterized in that: described the 3rd cannelure (15) inwall has for the female thread that connects valve gap, in the outer end of described air inlet cavity (11) by the air inlet that is threaded with pipe joint (4).
7. medical reversal valve according to claim 3, it is characterized in that: the section of the upper end of described valve gap (2) is hexagon, and O RunddichtringO (6) is installed in the described cannelure (23).
8. medical reversal valve according to claim 4, it is characterized in that: described spool (3) integral body is the cylinder bodily form, the top of described spool (3), peripheral evenly rip cutting four straight flanges in bottom, so that form gas circuit between spool and the valve gap, and in the valve core movement process, play positioning action, the external diameter of described spool (3) is less than the internal diameter of valve gap (2), so that form the gap between spool (3) and the valve gap (2).
9. according to claim 2 or 6 arbitrary described medical reversal valves, it is characterized in that: described first cannelure (13) internal diameter is less than second cannelure (14) internal diameter, and described closure part (31) Outside Dimensions and first cannelure (13) internal diameter are complementary.
10. medical reversal valve according to claim 5, it is characterized in that: described spring (5) one ends are installed in the cavity of supplying gas (12), the other end is installed in the mounting groove (33), described valve gap (2) is enclosed within described spool (3) periphery, top, and by three cannelure (15) of compression spring (5) screw-in at valve body, so that boss (32) holds out against projection (22), closure part (31) are positioned at second cannelure (14) top and are in first cannelure near an end of 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 true CN103182139A (en) | 2013-07-03 |
| CN103182139B CN103182139B (en) | 2016-02-24 |
Family
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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) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880284A (en) * | 2014-02-28 | 2015-09-02 | 北京谊安医疗系统股份有限公司 | Inner airtight testing device |
| CN104880281A (en) * | 2014-02-28 | 2015-09-02 | 北京谊安医疗系统股份有限公司 | Outer airtight testing 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880284A (en) * | 2014-02-28 | 2015-09-02 | 北京谊安医疗系统股份有限公司 | Inner airtight testing device |
| CN104880281A (en) * | 2014-02-28 | 2015-09-02 | 北京谊安医疗系统股份有限公司 | Outer airtight testing device |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103182139B (en) | 2016-02-24 |
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