CN101766864A - two-position three-way valve - Google Patents
two-position three-way valve Download PDFInfo
- Publication number
- CN101766864A CN101766864A CN 200810246783 CN200810246783A CN101766864A CN 101766864 A CN101766864 A CN 101766864A CN 200810246783 CN200810246783 CN 200810246783 CN 200810246783 A CN200810246783 A CN 200810246783A CN 101766864 A CN101766864 A CN 101766864A
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- valve
- spool
- communicated
- sealing gasket
- valve body
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Abstract
The invention provides a two-position three-way valve which comprises a valve body (1), a valve core (2) and a plug (6); the valve body (1) is provided with a valve cavity (11); the side wall of the valve body is provided with an air outlet (B) communicated with the valve cavity; the valve core (2) extends into the valve cavity from one end and can move along the axial direction of the valve body; part of the valve, which protrudes out of the valve body, is provided with a plurality of vent holes (C), and the vent holes (C) can be communicated with the valve cavity through connection channels (21) in the valve core; the plug extends into the valve cavity from the other end, and is provided with an air inlet (A) communicated with the valve cavity, wherein a single-way valve gasket (5) is arranged between the plug and the valve core, so as to selectively communicate the air inlet and the air outlet or communicate the air outlet and the vent holes; the two-position three-way valve of the invention can be combined into a gas-electric linkage switch with the power switch of an anesthesia machine, not only has good air-tightness, smaller size and low compression resistance, and can ensure the hand feel of the gas-electric linkage master switch.
Description
Technical field
The present invention relates to a kind of two-position three-way valve, particularly, relate to the two-position three-way valve on a kind of anesthetic machine that is mainly used in medical instruments field.
Background technology
In medical procedure; particularly when carrying out various operation; often need anaesthetize for reducing the pain of patient in operation process patient; therefore; in the operation of some more complicated, often can use anesthetic machine; gas selector switch (two-position three-way valve combination) is installed on some anesthetic machine; make the compensation gas aerobic gas and the laughing gas of anesthetic machine; two kinds of selections of oxygen and air; to avoid laughing gas and air to use simultaneously; but the size of the two-position three-way valve combination valve that uses on the present anesthetic machine is bigger; and the gas selector switch is set separately makes switch cause the control interface of anesthetic machine too numerous and diverse too much, be unfavorable for operating effectively.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the above-mentioned defective that exists in the prior art, therefore, the object of the present invention is to provide a kind of two-position three-way valve, according to two-position three-way valve of the present invention, because the on and off switch of valve and anesthetic machine is synthesized together, therefore not only make the number of switches of anesthetic machine reduce, and spool when being compressed resistance little, the less stroke of spool just can be realized the switching of gas passage, help the valid function of anesthetic machine, in addition, the size of whole valve is less, also helps reducing the dimensional structure of whole anesthetic machine.
For achieving the above object, two-position three-way valve according to the present invention comprises: valve body, have valve pocket, and the sidewall of valve body is provided with the gas outlet that can be communicated with valve pocket; Spool stretches in the valve pocket and can be along the moving axially of valve body from an end, and protruding on the outer part of valve body of spool offers a plurality of steam vents, and steam vent can be communicated with valve pocket by the interface channel in the spool; Plug stretches in the valve pocket from the other end, offers the air inlet that can be communicated with valve pocket on the plug, wherein, is provided with the check valve sealing gasket between plug and spool, air inlet is communicated with the gas outlet or the gas outlet is communicated with steam vent.
Preferably, also comprise pressure ring with stepped hole, stepped hole is divided into the less second portion of bigger first in aperture and aperture with pressure ring, the check valve sealing gasket is contained in the first and optionally seals second portion, the outer wall that is positioned at valve pocket of spool is provided with shoulder, and spring housing is located on the spool and is biased between the end face and shoulder of second portion.
Preferably, the check valve sealing gasket is a knuckle-tooth shape structure, and the root diameter of knuckle-tooth shape structure is less than the diameter of air inlet and greater than the internal diameter of the second portion of pressure ring.
Preferably, the check valve sealing gasket has along six teeth that circumferentially equidistantly distribute.
Preferably, valve body and spool are by the sealing of O shape ring sealing ring.
Preferably, the check valve sealing gasket is made by silica gel.
According to two-position three-way valve of the present invention, on the one hand, because the on and off switch of valve and anesthetic machine is synthesized together, therefore not only make the number of switches of anesthetic machine reduce, and spool when being compressed resistance little, the less stroke of spool just can be realized the switching of gas passage, helps the valid function of anesthetic machine; On the other hand, the size of whole valve is less on the basis of realizing good air-tightness, also helps the size construction of whole anesthetic machine.
Description of drawings
Accompanying drawing constitutes the part of this description, and is used for illustrating principle of the present invention with this description, wherein:
Fig. 1 is the sketch map when two-position three-way valve is in the normal state according to the preferred embodiment of the invention;
Fig. 2 is the sketch map of two-position three-way valve when spool is compressed according to the preferred embodiment of the invention;
Fig. 3 is the vertical view of check valve sealing gasket according to the preferred embodiment of the invention;
Fig. 4 is the front view of check valve sealing gasket according to the preferred embodiment of the invention;
The specific embodiment
Describe the two-position three-way valve of the preferred embodiment of the present invention below with reference to accompanying drawings in detail.
Fig. 1 is the sketch map (line segment of band arrow is represented the gas communication direction among the figure) when two-position three-way valve is in the normal state according to the preferred embodiment of the invention, as can be seen from Figure 1, the inside of valve body 1 is formed with valve pocket 11, and the sidewall of valve body 1 is provided with the gas outlet B that is communicated with valve pocket 11; Spool 2 stretches in the valve pocket 11 and can moving axially along valve body 1 from an end of valve body 1, offer a plurality of steam vent C (being equally distributed 4 steam vents) protruding on valve body 1 part in addition of spool 2 in this preferred embodiment, spool 2 inside are formed with exhaust passage 21, aforementioned steam vent C can be communicated with valve pocket 11 by this exhaust passage, also be provided with shoulder 22 on the outer wall of the part that is positioned at valve pocket 11 of spool 2, as below describing, when compression spool 2, spring 3 is subjected to bias voltage and shrinks, during recompression spool 2, thereby the shoulder 22 of 3 pairs of spools 2 of spring applies elastic force spool 2 is returned to the normality position, in addition, this check valve sealing gasket is preferably made to realize its function by having certain degree of hardness and can produce the silica gel material (or other can realize the elastomeric material of identical function) that is out of shape under the effect of external force.
As shown in Figure 1, plug 6 stretches in the valve pocket 11 from the other end of valve body 1, in this preferred embodiment, plug 6 inside have the stepped hole that forms air inlet A, this stepped hole is divided into connecting hole 61 and 62 two parts of guiding groove, wherein, connecting hole 61 is set to screwed hole to engage with the jointing that source of the gas is provided, it is to enter in the valve pocket 11 in order to guide better by check valve sealing gasket 5 described later from the gas that air inlet A enters that guiding groove 62 is set, in this case, the tooth root diameter of a circle of check valve sealing gasket 5 is less than the internal diameter of guiding groove 62.Should be noted in the discussion above that under the situation that does not deviate from the principle of the invention and scope the shape of the air inlet A of this plug 6 can be as required and be different.
Shown in Fig. 1,3 and 4, between plug 6 and spool, also be provided with check valve sealing gasket 5, the effect that this check valve sealing gasket is set is: on the one hand, when spool is in the normal state, make the gas that enters from gas outlet B enter the interface channel 21 of spool 2 and finally discharge from steam vent C via valve pocket 11, promptly this check valve sealing gasket 5 can seal up valve pocket 11; On the other hand, when applying external force compression spool 2 for spool 2, thereby the end face that is positioned at valve pocket of spool is pressed against on the end face of a side of this check valve sealing gasket 5 interface channel 21 is sealed up, and can enter the valve pocket 11 interior gas outlet B that also finally enter via this check valve sealing gasket 5 from the gas that air inlet A enters, for achieving the above object, in a preferred embodiment of the invention, check valve sealing gasket 5 is for having along the knuckle-tooth shape structure of six teeth that circumferentially equidistantly distribute, and its tooth root diameter of a circle is littler than the diameter of guiding groove 62 parts on the aforementioned plug 6, but greater than below with the internal diameter of the second portion 42 of the pressure ring 4 described.Certainly, the check valve sealing gasket can have multiple shape, as long as can satisfy above-mentioned functions, can not be circular such as its shape, and the number of tooth can change, and perhaps it can be distributed with the column construction of a plurality of through holes near periphery.
Referring again to shown in Figure 1, between the valve pocket 11 of valve body 1 and plug 6, also be provided with pressure ring 4, pressure ring 4 inside also are provided with stepped hole, and this stepped hole is divided into the less second portion 42 of aperture bigger first 41 and aperture with pressure ring 4.Aforesaid check valve sealing gasket 5 is placed in this first 41, and the internal diameter of second portion 42 is less than the tooth root diameter of a circle of check valve sealing gasket 5, in addition, be also noted that, the internal diameter of this second portion also should be greater than the external diameter that is positioned at the valve pocket part of spool, thereby make that under the spring force effect end face that is positioned at this valve pocket of spool can pass on the end face that this second portion is pressed against check valve sealing gasket 5.
In addition, spring 3 is sheathed on the spool 2 and is biased between the end face and shoulder of second portion 42, this spring 3 is set is in order to finish when compression spool 2 when applying external force for once more spool 2 after venting process, under the elastic force effect of spring, can make spool 2 return to the normality position, in addition, because spool 2 can move relative to valve body 1, therefore, be provided with O shape ring sealing ring 7 so that valve body 1 and spool 2 are sealed in the shoulder that is in spool 22 and the position between the steam vent C of valve body.
The operation principle of two-position three-way valve according to the preferred embodiment of the invention will be described below: when two-position three-way valve is in the normal state (promptly not compressing spool 1), with reference to Fig. 1, the gas that enters from air inlet A is pressed against check valve sealing gasket 5 on the pressure ring 4, under the effect of gas pressure, check valve sealing gasket 5 fits tightly together with pressure ring 4, its contact plane forms sealing surface, and therefore, air inlet A is not communicated with gas outlet B or steam vent C.At this moment, also finally discharge via the interface channel 21 that valve pocket 11 enters spool 2 from the gas that gas outlet B enters, thereby finish venting process one time from steam vent C; When compression spool 2, with reference to shown in Figure 2, under the effect of external force, spool 2 is pushed check valve sealing gasket 5 to plug 6, forms sealing surface between the contact plane of spool 2 and check valve sealing gasket 5, and steam vent C is not communicated with valve pocket 11, therefore, steam vent C is not communicated with air inlet A or gas outlet B.At this moment, air inlet from air inlet A is also finally discharged from gas outlet B by the valve pocket 11 that the gap between plug 6 and the check valve sealing gasket 5 enters valve body 1, after the external force removal that will be applied on the spool 2, spool 2 returns to normality under the resilient force of spring 3, and check valve sealing gasket 5 is pressed against on the pressure ring under the effect of the gas pressure that enters from the A end, thereby gas outlet B is communicated with steam vent C.Preferably, this gas outlet B is a screwed hole, to be connected with the joint of external air source.
According to two-position three-way valve of the present invention, the structural design of this valve is guaranteeing to make that not only the size of valve is little on the good bubble-tight basis, and can be synthesized together with the on and off switch of anesthetic machine and be assembled into the air-electricity linkage main switch, thereby the number of switches on the anesthetic machine is also reduced, and compression during spool less and less stroke spool of resistance just can realize the switching of gas passage, can guarantee the feel of air-electricity linkage main switch.
Below only be the preferred embodiments of the present invention; be not to be used to limit the present invention; for a person skilled in the art; the present invention can have various changes and variation; all any modifications of within the spirit and principles in the present invention scope, being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a two-position three-way valve is characterized in that, comprising: valve body (1), have valve pocket (11), and the sidewall of described valve body (1) is provided with the gas outlet (B) that can be communicated with described valve pocket (11); Spool (2), stretch in the described valve pocket (11) and can moving axially from an end along described valve body (1), protruding on the outer part of described valve body (1) of described spool (2) offers a plurality of steam vents (C), and described steam vent (C) can be communicated with described valve pocket (11) by the interface channel (21) in the described spool (2); Plug (6), stretch in the described valve pocket (11) from the other end, offer the air inlet (A) that can be communicated with on the described plug (6) with described valve pocket (11), wherein, between described plug (6) and described spool (1), be provided with check valve sealing gasket (5), described air inlet (A) is communicated with described gas outlet (B) or described gas outlet (B) is communicated with described steam vent (C).
2. two-position three-way valve according to claim 1, it is characterized in that, also comprise pressure ring (4) with stepped hole, described stepped hole is divided into the less second portion (42) of bigger first in aperture (41) and aperture with described pressure ring (4), described check valve sealing gasket (5) is contained in the described first (41) and optionally seals described second portion (42), the outer wall that is positioned at described valve pocket (11) of described spool (2) is provided with shoulder (22), and spring (3) is set in described spool (2) and goes up and be biased between the end face and described shoulder (22) of described second portion (42).
3. two-position three-way valve according to claim 1, it is characterized in that, described check valve sealing gasket (5) is a knuckle-tooth shape structure, and the root diameter of described knuckle-tooth shape structure is less than the diameter of described air inlet (A) and greater than the internal diameter of the described second portion (42) of described pressure ring (4).
4. two-position three-way valve according to claim 3 is characterized in that, described check valve sealing gasket (5) has along six teeth that circumferentially equidistantly distribute.
5. two-position three-way valve according to claim 1 is characterized in that, described valve body (1) seals by O shape ring sealing ring (7) with described spool (2).
6. two-position three-way valve according to claim 1 is characterized in that, described check valve sealing gasket (5) is made by silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810246783 CN101766864B (en) | 2008-12-29 | 2008-12-29 | Two-position three-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810246783 CN101766864B (en) | 2008-12-29 | 2008-12-29 | Two-position three-way valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101766864A true CN101766864A (en) | 2010-07-07 |
| CN101766864B CN101766864B (en) | 2013-07-10 |
Family
ID=42500064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810246783 Expired - Fee Related CN101766864B (en) | 2008-12-29 | 2008-12-29 | Two-position three-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101766864B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954058A (en) * | 2012-12-03 | 2013-03-06 | 广西柳工机械股份有限公司 | Two-position three-way hydraulic valve |
| CN103182141A (en) * | 2011-12-30 | 2013-07-03 | 北京谊安医疗系统股份有限公司 | Two-way tee valve |
| CN103182130A (en) * | 2011-12-30 | 2013-07-03 | 北京谊安医疗系统股份有限公司 | Laughing gas inlet valve |
| WO2014198235A1 (en) * | 2013-06-14 | 2014-12-18 | 北京谊安医疗系统股份有限公司 | Pneumatic electrical switch and medical equipment provided with same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4331140A (en) * | 1979-07-30 | 1982-05-25 | Brian Hallsey | Shuttle valve |
| GB8819514D0 (en) * | 1988-08-17 | 1988-09-21 | Neotronics Technology Plc | Resuscitator valve |
| CN2168139Y (en) * | 1993-04-28 | 1994-06-08 | 王永理 | Tube-like three-way valve with high sealing performance |
-
2008
- 2008-12-29 CN CN 200810246783 patent/CN101766864B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103182141A (en) * | 2011-12-30 | 2013-07-03 | 北京谊安医疗系统股份有限公司 | Two-way tee valve |
| CN103182130A (en) * | 2011-12-30 | 2013-07-03 | 北京谊安医疗系统股份有限公司 | Laughing gas inlet valve |
| CN103182130B (en) * | 2011-12-30 | 2015-12-02 | 北京谊安医疗系统股份有限公司 | Laughing gas intake valve |
| CN103182141B (en) * | 2011-12-30 | 2016-03-02 | 北京谊安医疗系统股份有限公司 | Two position three-way valve |
| CN102954058A (en) * | 2012-12-03 | 2013-03-06 | 广西柳工机械股份有限公司 | Two-position three-way hydraulic valve |
| CN102954058B (en) * | 2012-12-03 | 2015-06-17 | 广西柳工机械股份有限公司 | Two-position three-way hydraulic valve |
| WO2014198235A1 (en) * | 2013-06-14 | 2014-12-18 | 北京谊安医疗系统股份有限公司 | Pneumatic electrical switch and medical equipment provided with same |
| CN104225757A (en) * | 2013-06-14 | 2014-12-24 | 北京谊安医疗系统股份有限公司 | Pneumatic-electric linked switch and medical device with same |
| EA032368B1 (en) * | 2013-06-14 | 2019-05-31 | Бейджин Аеонмед Ко., Лтд. | Pneumatic electrical switch and medical equipment provided with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101766864B (en) | 2013-07-10 |
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Granted publication date: 20130710 Termination date: 20151229 |
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| EXPY | Termination of patent right or utility model |