CN102406976B - Respiratory flow rhythm control gas valve - Google Patents
Respiratory flow rhythm control gas valve Download PDFInfo
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- CN102406976B CN102406976B CN201110296467.1A CN201110296467A CN102406976B CN 102406976 B CN102406976 B CN 102406976B CN 201110296467 A CN201110296467 A CN 201110296467A CN 102406976 B CN102406976 B CN 102406976B
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- valve
- air
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- chamber
- valve body
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Abstract
The invention relates to a respiratory flow rhythm control gas valve which can be opened or closed by electric control and can regulate the magnitude of gas flow. In the invention, a two-position three-way electromagnetic valve is connected with a valve body to enable the gas valve to be opened or closed by electric control, and the change of the size of a ventilation gap is linearly increase through a steel ball in the gas valve and a linear inverted cone-shaped cavity, thus the travel distance between a support pillar and a valve core can be controlled through a screw mechanism so as to realize the purposes of controlling and regulating the magnitude of gas flow. By adopting the structure, the respiratory flow rhythm control gas valve has the characteristic of artful structure, can be opened or closed by electric control, can regulate the magnitude of gas flow, and is suitable for being applied in medical respirators.
Description
Technical field
The present invention relates to the air-valve device technical field in medical ventilator, refer in particular to a kind of by automatically controlled break-make, the respiratory flow rhythm control air valve that can regulate air flow rate size.
Background technology
At present, existing air valve structure is fairly simple, and it moves up and down by spool the break-make realizing air-flow.But existing air valve needs manually to carry out the break-make that regulating spool realizes air-flow usually, and the uninterrupted of uncontrollable air-flow.And in medical ventilator, need the size of the break-make and air flow rate realizing automatically controlled air-flow at any time according to the situation of patient to control, existing air valve cannot be applied in medical ventilator, in view of this, how to design a kind of can automatically realize air-flow by automatically controlled break-make and the air valve that can control air flow rate size become and have problem to be solved.
Summary of the invention
Object of the present invention is exactly provide for the deficiencies in the prior art part a kind of by automatically controlled break-make, the respiratory flow rhythm control air valve that can regulate air flow rate size.
For achieving the above object, a kind of respiratory flow rhythm control air valve of the present invention, include: the pneumatic valve body of tool, spool is equiped with in air cavity, valve gap is provided with at the top of valve body, valve gap is provided with the screw mechanism of the stroke size that to move up and down for adjustable diameter and screw adjusting spool, and the fore-set below this screw mechanism corresponds to the top of spool, between valve gap and spool, be connected with spring, spool is by the valve core head forming T-shaped structure, spool body and spool bottom are formed, sealing ring on valve core head is arranged with, sealing ring in spool is arranged with it, lower seal is arranged with in spool bottom, wherein, described upper sealing ring, the inwall air-tightness of middle sealing ring and air cavity slidingly contacts, lower seal is pressed on the upper shed edge hermetic seal in the linear inverted cone chamber of air cavity bottommost under spring force effect, under the airproof state of normality, at upper sealing ring, upper gas chamber is formed between middle sealing ring, at middle sealing ring, air cavity in being formed between lower seal, being positioned at the chamber that below lower seal forms primarily of described linear inverted cone chamber is lower air chamber, the inlet suction port be connected on valve body is communicated with lower air chamber bottom opening, the air outlet adapter being connected to valve body is communicated with middle air cavity, two-position three way magnetic valve is connected with on valve body side, boost port, pressure relief opening and air inlet that this two-position three way magnetic valve has automatically controlled any two ventilations or dies, wherein, air inlet is communicated with lower air chamber by the first duct on valve body, leakage port is communicated with the relief fittings be connected on valve body by the second duct on valve body, and boost port is communicated with upper gas chamber by the 3rd duct on valve body, when being in air-suction state, two-position three way magnetic valve is automatically controlled makes that air inlet and boost port are in mutual conduction state, leakage port is in closed condition, the high pressure gas entering inlet suction port enters upper gas chamber and spool is overcome on spring force move after importing boost port by air inlet, the upper shed that lower seal leaves linear inverted cone chamber makes to communicate with middle air cavity with lower air chamber, when being in reset mode, two-position three way magnetic valve is automatically controlled to be made air inlet and boost port be in mutual closed condition, boost port and leakage port to be in mutual conduction state, high pressure gas in upper gas chamber is discharged from relief fittings after entering leakage port by boost port by two-position three way magnetic valve, and spool resets under spring force effect.
Described linear inverted cone intracavity is placed with steel ball, spool bottom is shaped to the arc surface for being fitted on steel ball, the positioning needle preventing steel ball stuck for holding steel ball is provided with after body base fluting, positioning needle and body base are equipped with sealing ring between slotting, and the pore size that when steel ball moves on linear inverted cone chamber during ventilation and linear inverted cone chamber is formed changes in linear increase.
The opening of giving vent to anger that described 3rd duct is communicated with upper gas chamber is opened in upper gas chamber and holds on the bottom surface of valve core head, described bottom surface is also provided with for bottom isolating valve core print with give vent to anger the supporting bracket of opening.
Valve body is also connected to the synchronous pneumatic fittings for realizing synchronization action, and synchronous pneumatic fittings is communicated with upper gas chamber.
Described screw mechanism includes valve gap, fore-set, rotating shaft and rotating shaft nut, and the inner chamber of valve gap is divided into rotation containing cavity and lower connecting thread chamber; The top of fore-set is thread cylinder, and the end face of this thread cylinder has keyway, and rotating shaft forms circular rotating member, is provided with the connection rotation key with described keyway corresponding matching in the bottom of rotating shaft; After assembling, fore-set is movably connected in the lower connecting thread intracavity of the inner chamber of valve gap by cylindrical thread, described connection rotation key and described keyway snap-fit engagement, described circular rotating member matched in clearance is contained in described upper rotation containing cavity, and rotating shaft nut is connected with the threaded portion outside the upper rotation containing cavity of valve gap.
Described valve body, spool, valve gap are made by metal material.
Described spool top offers the groove inserting location for described fore-set.
After adopting said structure, the present invention utilizes two-position three way magnetic valve and valve body to be interconnected the break-make realizing electric control valve, and steel ball in air valve and the linear inverted cone chamber pore size that realizes ventilating changes in linear increase, thus control the stroke distances between fore-set and spool by screw mechanism, realize the regulating and controlling of air flow rate size.As from the foregoing, the present invention have structure ingenious, by automatically controlled break-make, air flow rate size can be regulated, be applicable to the feature applied in medical ventilator equipment.
Accompanying drawing explanation
Fig. 1 is perspective exploded view of the present invention.
Fig. 2 is the cross-sectional view of the present invention along inlet suction port cutting.
Fig. 3 is the cross-sectional view of the present invention along air outlet adapter cutting.
Fig. 4 is the perspective cross section structural representation of the present invention along inlet suction port cutting.
Fig. 5 is schematic perspective view of the present invention.
Fig. 6 is the cross-sectional view of the present invention along the air inlet cutting of two-position three way magnetic valve.
Fig. 7 is the cross-sectional view of the present invention along the boost port cutting of two-position three way magnetic valve.
Fig. 8 is the cross-sectional view of the present invention along the pressure relief opening cutting of two-position three way magnetic valve.
Detailed description of the invention
As Fig. 1-8 shows, a kind of respiratory flow rhythm control air valve of the present invention, include: the valve body 10 with air cavity 11, spool 20 is equiped with in air cavity 11, valve gap 30 is provided with at the top of valve body 10, valve gap 30 is provided with the screw mechanism 40 of the stroke size that to move up and down for adjustable diameter and screw adjusting spool 20, and the fore-set 41 below this screw mechanism 40 corresponds to the top of spool 20, is connected with spring 50 between valve gap 30 and spool 20, spool 20 is by the valve core head 21 forming T-shaped structure, spool body 22 and spool bottom 23 are formed, valve core head 21 is arranged with sealing ring 61, sealing ring 62 during spool body 22 is arranged with, lower seal 63 is arranged with in spool bottom 23, wherein, described upper sealing ring 61, middle sealing ring 62 slidingly contacts with the inwall air-tightness of air cavity 11, lower seal 63 is pressed on the upper shed edge hermetic seal of the linear inverted cone chamber 113a of air cavity 11 bottommost under the effect of spring 50 elastic force, under the airproof state of normality, at upper sealing ring 61, upper gas chamber 111 is formed between middle sealing ring 62, at middle sealing ring 62, air cavity 112 in being formed between lower seal 63, being positioned at the chamber that lower seal less than 63 forms primarily of described linear inverted cone chamber 113a is lower air chamber 113, the inlet suction port 70 be connected on valve body 10 is communicated with lower air chamber 113 bottom opening, the air outlet adapter 80 being connected to valve body 20 is communicated with middle air cavity 112, two-position three way magnetic valve 90 is connected with on valve body 10 side, the boost port 91 that this two-position three way magnetic valve 90 has automatically controlled any two ventilations or dies, pressure relief opening 92 and air inlet 93, wherein, air inlet 93 is communicated with lower air chamber 113 by the first duct 10a on valve body 10, leakage port 92 is communicated with the relief fittings 100 be connected on valve body 10 by the second duct 10b on valve body 10, boost port 91 is communicated with upper gas chamber 111 by the 3rd duct 10c on valve body 10.
Steel ball 110 is placed with in described linear inverted cone chamber 113a, spool bottom 23 is shaped to the arc surface for being fitted on steel ball 110, the positioning needle 120 preventing steel ball 110 stuck for holding steel ball 110 is provided with after valve body 10 bottom slot, between positioning needle 120 and valve body 10 bottom slot, sealing ring 130 is housed, when during ventilation, steel ball 110 moves on linear inverted cone chamber 113a and the pore size that formed of linear inverted cone chamber 113a change in linear increase.
The opening 10c1 that gives vent to anger that described 3rd duct 10c is communicated with upper gas chamber 111 be opened in hold valve core head 21 in upper gas chamber 111 bottom surface on, described bottom surface is also provided with for bottom isolating valve core print 21 with give vent to anger the supporting bracket 10d of opening 10c1.
Valve body 10 is also connected to the synchronous pneumatic fittings 140 for realizing synchronization action, and synchronous pneumatic fittings 140 is communicated with upper gas chamber 111.
Described screw mechanism 40 includes fore-set 41, rotating shaft 42 and rotating shaft nut 43, and the inner chamber of valve gap 30 is divided into rotation containing cavity and lower connecting thread chamber; The top of fore-set 41 is thread cylinder, and the end face of this thread cylinder has keyway 411, rotating shaft 42 forms circular rotating member 421, is provided with the connection rotation key 422 with described keyway 411 corresponding matching in the bottom of rotating shaft 42; After assembling, fore-set 41 is movably connected in the lower connecting thread intracavity of the inner chamber of valve gap 30 by cylindrical thread, described connection rotation key 422 coordinates with described keyway card 411, described circular rotating member 421 matched in clearance is contained in described upper rotation containing cavity, and rotating shaft nut 43 is threaded with the threaded portion 31 outside the upper rotation containing cavity of valve gap 30.
Described valve body 10, spool 20, valve gap 30 are made by metal material.
Described spool 10 top offers the groove inserting location for described fore-set 41.
Air valve of the present invention is under the airproof state of normality, lower air chamber 113, middle air cavity 112 and upper gas chamber 111 are in the state be isolated from each other, the lower seal 63 of spool 20 is pressed on the upper shed edge hermetic seal of the linear inverted cone chamber 113a of air cavity 11 bottommost under the effect of spring 50 elastic force, spool bottom 23 is pressed in steel ball 110 top, and steel ball 110 bottom is held by positioning needle 120 and prevented steel ball 110 stuck in linear inverted cone chamber 113a; Now, three mouth all not conductings of two-position three way magnetic valve 90;
During work ventilation, high pressure draught imports in lower air chamber 113 from inlet suction port 70, automatically controlled air inlet 93 and the boost port 91 of making of two-position three way magnetic valve 90 is in mutual conduction state, leakage port 92 is in closed condition, high pressure gas enters from lower air chamber 113 and to arrive upper gas chamber 111 after boost port 91 and form High Pressure and make spool 20 overcome spring 50 elastic force at the valve core head 21 of spool 20 to move, the upper shed that lower seal 63 leaves linear inverted cone chamber 113a makes to communicate with middle air cavity 112 with lower air chamber 113, like this, inlet suction port 70 has just been given vent to anger with air outlet adapter 80 conducting, steel ball 110 now moves up along linear inverted cone chamber 113a under the effect of high pressure draught, the displacement that air flow clearance size between steel ball 110 and linear inverted cone chamber 113a and steel ball 110 move up is linear change, so just can control stroke that steel ball 110 moves and adjusting knob mechanism 40 to control push rod 41 and reach with the distance at spool 20 top the object controlling air flow rate.
When reset died by needs, two-position three way magnetic valve 90 is automatically controlled to be made air inlet 93 and boost port 91 be in mutual closed condition, boost port 91 and leakage port 92 to be in mutual conduction state, high pressure gas in upper gas chamber 111 is discharged from relief fittings 100 after entering leakage port 92 by boost port 91 by two-position three way magnetic valve 90, and spool 20 resets and returns back to original state under the effect of spring 50 elastic force.
In addition, when air valve of the present invention is applied in respirator, valve body 10 is also connected to the synchronous pneumatic fittings 140 for realizing synchronization action, and this synchronous pneumatic fittings 140 is to provide high pressure gas to other air valve of respirator, making itself and air valve synchronization action of the present invention.
In order to air-tightness assembling between parts assembling of the present invention, suitable sealing ring can be selected to seal.
As from the foregoing, the present invention have the present invention have structure ingenious, by automatically controlled break-make, air flow rate size can be regulated, be applicable to the feature applied in medical ventilator equipment.
Claims (7)
1. a respiratory flow rhythm control air valve, include: the pneumatic valve body of tool, spool is equiped with in air cavity, valve gap is provided with at the top of valve body, valve gap is provided with the screw mechanism of the stroke size that to move up and down for adjustable diameter and screw adjusting spool, fore-set below this screw mechanism corresponds to the top of spool, between valve gap and spool, be connected with spring, it is characterized in that: spool is by the valve core head forming T shape structure, spool body and spool bottom are formed, sealing ring on valve core head is arranged with, sealing ring in spool is arranged with it, lower seal is arranged with in spool bottom, wherein, described upper sealing ring, the inwall air-tightness of middle sealing ring and air cavity slidingly contacts, lower seal is pressed on the upper shed edge hermetic seal in the linear inverted cone chamber of air cavity bottommost under spring force effect, under the airproof state of normality, at upper sealing ring, upper gas chamber is formed between middle sealing ring, at middle sealing ring, air cavity in being formed between lower seal, being positioned at the chamber that below lower seal forms primarily of described linear inverted cone chamber is lower air chamber, the inlet suction port be connected on valve body is communicated with lower air chamber bottom opening, the air outlet adapter being connected to valve body is communicated with middle air cavity, two-position three way magnetic valve is connected with on valve body side, boost port, pressure relief opening and air inlet that this two-position three way magnetic valve has automatically controlled any two ventilations or dies, wherein, air inlet is communicated with lower air chamber by the first duct on valve body, pressure relief opening is communicated with the relief fittings be connected on valve body by the second duct on valve body, and boost port is communicated with upper gas chamber by the 3rd duct on valve body, when being in air-suction state, two-position three way magnetic valve is automatically controlled makes that air inlet and boost port are in mutual conduction state, pressure relief opening is in closed condition, the high pressure gas entering inlet suction port enters upper gas chamber and spool is overcome on spring force move after importing boost port by air inlet, the upper shed that lower seal leaves linear inverted cone chamber makes to communicate with middle air cavity with lower air chamber, when being in reset mode, two-position three way magnetic valve is automatically controlled to be made air inlet and boost port be in mutual closed condition, boost port and pressure relief opening to be in mutual conduction state, high pressure gas in upper gas chamber is discharged from relief fittings after entering pressure relief opening by boost port by two-position three way magnetic valve, and spool resets under spring force effect.
2. according to a kind of respiratory flow rhythm control air valve described in claim 1, it is characterized in that: described linear inverted cone intracavity is placed with steel ball, spool bottom is shaped to the arc surface for being fitted on steel ball, the positioning needle preventing steel ball stuck for holding steel ball is provided with after body base fluting, positioning needle and body base are equipped with sealing ring between slotting, and the pore size that when steel ball moves on linear inverted cone chamber during ventilation and linear inverted cone chamber is formed changes in linear increase.
3. according to a kind of respiratory flow rhythm control air valve described in claim 2, it is characterized in that: the opening of giving vent to anger that described 3rd duct is communicated with upper gas chamber is opened in upper gas chamber and holds on the bottom surface of valve core head, described bottom surface is also provided with for bottom isolating valve core print with give vent to anger the supporting bracket of opening.
4. a kind of respiratory flow rhythm control air valve according to claim 1 or 2 or 3, is characterized in that: on valve body, be also connected to the synchronous pneumatic fittings for realizing synchronization action, synchronous pneumatic fittings is communicated with upper gas chamber.
5. a kind of respiratory flow rhythm control air valve according to claim 1 or 2 or 3, is characterized in that: described screw mechanism includes fore-set, rotating shaft and rotating shaft nut, and the inner chamber of described valve gap is divided into rotation containing cavity and lower connecting thread chamber; The top of fore-set is thread cylinder, and the end face of this thread cylinder has keyway, and rotating shaft forms circular rotating member, is provided with the connection rotation key with described keyway corresponding matching in the bottom of rotating shaft; After assembling, fore-set is movably connected in the lower connecting thread intracavity of the inner chamber of valve gap by cylindrical thread, described connection rotation key and described keyway snap-fit engagement, described circular rotating member matched in clearance is contained in described upper rotation containing cavity, and rotating shaft nut is connected with the threaded portion outside the upper rotation containing cavity of valve gap.
6. a kind of respiratory flow rhythm control air valve according to claim 1 or 2 or 3, is characterized in that: described valve body, spool, valve gap are made by metal material.
7. a kind of respiratory flow rhythm control air valve according to claim 1 or 2 or 3, is characterized in that: described spool top offers the groove inserting location for described fore-set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110296467.1A CN102406976B (en) | 2011-09-28 | 2011-09-28 | Respiratory flow rhythm control gas valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110296467.1A CN102406976B (en) | 2011-09-28 | 2011-09-28 | Respiratory flow rhythm control gas valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102406976A CN102406976A (en) | 2012-04-11 |
| CN102406976B true CN102406976B (en) | 2015-03-11 |
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ID=45909506
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110296467.1A Expired - Fee Related CN102406976B (en) | 2011-09-28 | 2011-09-28 | Respiratory flow rhythm control gas valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102406976B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102784428A (en) * | 2012-08-14 | 2012-11-21 | 苏州品诺维新医疗科技有限公司 | Linkage adjustment control method of respiratory rate and flow of respirator |
| CN104623798A (en) * | 2015-03-05 | 2015-05-20 | 浙江医药高等专科学校 | Piston gas pressure and flow control valve of breathing machine and working principle of piston gas pressure and flow control valve |
| CN112515854A (en) * | 2020-11-30 | 2021-03-19 | 福建骏格科技有限公司 | Pressure control valve for closed drainage device based on dynamic clearance pressure control |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5398714A (en) * | 1990-03-06 | 1995-03-21 | Price; William E. | Resuscitation and inhalation device |
| WO2008030837A1 (en) * | 2006-09-06 | 2008-03-13 | Abbott Respiratory Llc | Variable dose aerosol drug canister |
| CN100593425C (en) * | 2007-06-28 | 2010-03-10 | 北京谊安医疗系统股份有限公司 | Multifunctional safety valve |
| CN101664575B (en) * | 2009-09-04 | 2011-09-21 | 深圳市安保科技有限公司 | Device for regulating respiratory flow and respirator |
| CN201612919U (en) * | 2009-12-16 | 2010-10-27 | 烟台冰科集团有限公司 | Double-sealing medical quick gas supply valve |
| CN202223714U (en) * | 2011-09-28 | 2012-05-23 | 于邦仲 | Control air valve for flow and rhythm of breathing |
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2011
- 2011-09-28 CN CN201110296467.1A patent/CN102406976B/en not_active Expired - Fee Related
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| CN102406976A (en) | 2012-04-11 |
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