CN102500029A - Diaphragm type respiratory flow rhythm control air valve - Google Patents
Diaphragm type respiratory flow rhythm control air valve Download PDFInfo
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- CN102500029A CN102500029A CN2011102988591A CN201110298859A CN102500029A CN 102500029 A CN102500029 A CN 102500029A CN 2011102988591 A CN2011102988591 A CN 2011102988591A CN 201110298859 A CN201110298859 A CN 201110298859A CN 102500029 A CN102500029 A CN 102500029A
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Abstract
The invention relates to a diaphragm type respiratory flow rhythm control air valve, which can be switched on or off in an electronic control manner and can adjust air flow. A two-position three-way electromagnetic valve is connected with a valve body to realize on and off of the electronic control air valve, by the aid of a steel ball and a linear reversely conical cavity in the air valve, the size of a ventilating gap is increased linearly, the distance between a top post and a valve spool is controlled via a spiral mechanism, and control adjustment of the air flow is realized. After the structure is adopted, the diaphragm type respiratory flow rhythm control air valve has the advantages that the diaphragm type respiratory flow rhythm control air valve is smart in structure, the valve spool is high in movement precision and low in noise, the air valve can be switched on or off in the electronic control manner, the air flow can be adjusted, and the diaphragm type respiratory flow rhythm control air valve is suitable to be applied into medical breathing machine equipment.
Description
Technical field
The present invention relates to the air-valve device technical field in the medical ventilator, refer in particular to a kind of can be through automatically controlled break-make, can regulate the diaphragm type respiratory flow rhythm and pace of moving things control air valve of air flow rate size.
Background technology
At present, existing air valve structure is fairly simple, and it realizes the break-make of air-flow through moving up and down of spool.Yet existing air valve need be realized the break-make of air-flow through manually coming regulating spool usually, and the flow of uncontrollable air-flow size.And in medical ventilator, need realize that the break-make of automatically controlled air-flow and the size of air flow rate are controlled at any time according to patient's situation; Existing air valve can't be used in medical ventilator; In view of this, how designing a kind of break-make and the air valve that can control the air flow rate size that can be through automatically controlled automatic realization air-flow becomes problem to be solved is arranged.
Summary of the invention
The object of the invention is exactly provide to the weak point of prior art a kind of can be through automatically controlled break-make, can regulate the diaphragm type respiratory flow rhythm and pace of moving things control air valve of air flow rate size.
For achieving the above object; A kind of respiratory flow rhythm and pace of moving things control air valve of the present invention includes: have the valve body of air cavity, in air cavity, be equiped with spool; Top at valve body is provided with valve gap; Valve gap is provided with and is used for the move up and down screw mechanism of stroke size of adjustable diameter and screw adjusting spool, and the fore-set of this screw mechanism below is connected with spring corresponding to the top of spool between valve gap and spool; Spool is made up of valve core head, spool body and spool bottom; End face at valve core head is placed with flexible sheet and pad successively; The edge clamping of flexible sheet is established and is fixed between valve gap and the valve body; The diaphragm screw is fastened in the centre bore of spool after passing and passing pad, flexible sheet from top to bottom successively, wherein, and the inwall air-tightness sliding-contact of said middle sealing ring and air cavity; Lower seal is pressed on the upper shed edge hermetic seal in the linear inverted cone chamber of air cavity bottommost under the spring force effect; Under the airproof state of normality, air cavity in forming upper gas chamber between flexible sheet, the middle sealing ring, between middle sealing ring, lower seal, forming, being positioned at the chamber that mainly is made up of said linear inverted cone chamber below the lower seal is lower air chamber; The inlet suction port that is connected on the valve body is communicated with the lower air chamber bottom opening; The air outlet adapter that is connected valve body is communicated with middle air cavity; At the other two-position three way magnetic valve that is connected with of valve body; 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 through first duct on the valve body; Leakage port is communicated with pressure release joint on being connected valve body through second duct on the valve body, and boost port is communicated with upper gas chamber through the 3rd duct on the valve body; When being in the air inlet state; Two-position three way magnetic valve is automatically controlled to make air inlet and boost port be in the mutual conduction state, leakage port is in closed condition; The high pressure gas that gets into inlet suction port is imported by air inlet and gets into upper gas chamber after the boost port and make spool overcome on the spring force to move, and the upper shed that lower seal is left linear inverted cone chamber makes and communicates 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 the mutual conduction state; High pressure gas in the upper gas chamber is discharged from the pressure release joint after getting into leakage port by boost port through two-position three way magnetic valve, and spool resets under the spring force effect.
Said linear inverted cone intracavity is placed with steel ball; The spool bottom is shaped to the arc surface that is used for being fitted on the steel ball; Behind the valve body bottom slot, be provided with and be used for holding the positioning needle that steel ball prevents that steel ball is stuck; Between positioning needle and the valve body bottom slot sealing ring is housed, the pore size variation that when steel ball moves on linear inverted cone chamber during ventilation and linear inverted cone chamber forms is linear increase.
The opening of giving vent to anger that said the 3rd duct is communicated with upper gas chamber is opened on the bottom surface that holds valve core head in the upper gas chamber, on said bottom surface, also is provided with to be used for the supporting bracket of isolating valve core print bottom and the opening of giving vent to anger.
On valve body, also be connected to the synchronous pneumatic fittings that is used for realizing synchronization action, pneumatic fittings is communicated with upper gas chamber synchronously.
Said 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 following connecting thread chamber; The top of fore-set is thread cylinder, and the end face of this thread cylinder has keyway, forms circular revolving part in the rotating shaft, is provided with in the bottom of rotating shaft with being connected of said keyway corresponding matching to rotate key; After the assembling; Fore-set is movably connected in the following connecting thread intracavity of the inner chamber of valve gap through cylindrical thread; Said connection rotation key and said keyway snap fit; Said circular revolving part matched in clearance is contained in said going up in the rotation containing cavity, and the rotating shaft nut is threaded with the threaded portion of going up the rotation containing cavity outside of valve gap, and the bottom of fore-set is supported and is located in the top groove of diaphragm screw.
Said valve body, spool, valve gap are processed by metal material.
The cross section that said flexible sheet is positioned at the part of upper gas chamber is shaped to the arc section with elastic force.
After adopting said structure; The present invention utilizes two-position three way magnetic valve and valve body to interconnect the break-make that realizes electric control valve; And steel ball in the air valve and linear inverted cone chamber realize that the variation of ventilation pore size is linear increase; Thereby can realize the regulating and controlling of air flow rate size through the stroke distances between screw mechanism control fore-set and the spool.In addition, the present invention utilizes the deformation of flexible sheet to reduce the friction between spool and the valve body, and this makes both kinematic accuracies be further enhanced and can reduce noise.By on can know, the present invention has that structure is ingenious, the valve core movement precision is high, noise is little, can be through automatically controlled break-make, can regulate the air flow rate size, be fit to the characteristics of using in the medical ventilator equipment.
Description of drawings
Fig. 1 is a perspective exploded view of the present invention.
The cross-sectional view that Fig. 2 dissects for closed condition of the present invention lower edge air outlet adapter.
The cross-sectional view that Fig. 3 dissects for aeration status of the present invention lower edge air outlet adapter.
The three-dimensional cross-sectional view that Fig. 4 dissects along inlet suction port for the present invention.
Fig. 5 is a schematic perspective view of the present invention.
The cross-sectional view that Fig. 6 dissects along the air inlet of two-position three way magnetic valve for the present invention.
The cross-sectional view that Fig. 7 dissects along the pressure relief opening of two-position three way magnetic valve for the present invention.
The cross-sectional view that Fig. 8 dissects along the boost port of two-position three way magnetic valve for the present invention.
The specific embodiment
Show like Fig. 1-8; A kind of respiratory flow rhythm and pace of moving things control air valve of the present invention includes: have the valve body 10 of air cavity 11, in air cavity 11, be equiped with spool 20; Be provided with valve gap 30 at the top of valve body 10; Valve gap 30 is provided with and is used for the move up and down screw mechanism 40 of stroke size of adjustable diameter and screw adjusting spool 20, and the fore-set 41 of these screw mechanism 40 belows is connected with spring 50 corresponding to the top of spool 20 between valve gap 30 and spool 20; Spool 20 is made up of valve core head 21, spool body 22 and spool bottom 23; End face at valve core head 21 is placed with flexible sheet 61 and pad 61a successively; The edge clamping of flexible sheet 61 is established and is fixed between valve gap 30 and the valve body 10; Diaphragm screw 61b is fastened in the centre bore of spool 20 after passing and passing pad 61a, flexible sheet 61 from top to bottom successively, and sealing ring 62 on spool body 22, being arranged with is arranged with lower seal 63 in spool bottom 23; Wherein, The inwall air-tightness sliding-contact of sealing ring 62 and air cavity 11 in said, lower seal 63 is pressed on the upper shed edge hermetic seal of the linear inverted cone chamber 113a of air cavity 11 bottommosts under spring 50 elastic force effects, under the airproof state of normality; Air cavity 112 in forming upper gas chamber 111 between flexible sheet 61, the middle sealing ring 62, between middle sealing ring 62, lower seal 63, forming, being positioned at lower seal main chamber that is made up of said linear inverted cone chamber 113a 63 below is lower air chamber 113; The inlet suction port 70 that is connected on the valve body 10 is communicated with lower air chamber 113 bottom openings; The air outlet adapter 80 that is connected valve body 20 is communicated with middle air cavity 112; At the valve body 10 other two-position three way magnetic valves 90 that are connected with; Boost port 91, pressure relief opening 92 and air inlet 93 that this two-position three way magnetic valve 90 has automatically controlled any two ventilations or dies, wherein, air inlet 93 is communicated with lower air chamber 113 through the first duct 10a on the valve body 10; Leakage port 92 is communicated with pressure release joint 100 on being connected valve body 10 through the second duct 10b on the valve body 10, and boost port 91 is communicated with upper gas chamber 111 through the 3rd duct 10c on the valve body 10.
Be placed with steel ball 110 in the said linear inverted cone chamber 113a; Spool bottom 23 is shaped to and is used for being fitted in the arc surface on the steel ball 110; Behind valve body 10 bottom slots, be provided with and be used for holding the positioning needle 120 that steel ball 110 prevents that steel ball 110 is stuck; Between positioning needle 120 and valve body 10 bottom slots sealing ring 130 is housed, the pore size variation that forms with linear inverted cone chamber 113a when steel ball 110 moves on linear inverted cone chamber 113a during ventilation is linear increase.
The opening 10c1 that gives vent to anger that said the 3rd duct 10c is communicated with upper gas chamber 111 is opened on the bottom surface that holds valve core head 21 in the upper gas chamber 111, on said bottom surface, also is provided with the supporting bracket 10d that is used for isolating valve core print 21 bottoms and gives vent to anger opening 10c1.
On valve body 10, also be connected to the synchronous pneumatic fittings 140 that is used for realizing synchronization action, pneumatic fittings 140 is communicated with upper gas chamber 111 synchronously.
Said 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 following connecting thread chamber; The top of fore-set 41 is thread cylinder, and the end face of this thread cylinder has keyway 411, forms circular revolving part 421 in the rotating shaft 42, is provided with in the bottom of rotating shaft 42 with being connected of said keyway 411 corresponding matching to rotate key 422; After the assembling; Fore-set 41 is movably connected in the following connecting thread intracavity of the inner chamber of valve gap 30 through cylindrical thread; Said connection rotation key 422 cooperates with said keyway card 411; Said circular revolving part 421 matched in clearance are contained in said going up in the rotation containing cavity, and rotating shaft nut 43 is threaded with the threaded portion 31 of going up the rotation containing cavity outside of valve gap 30, and the bottom of fore-set 41 is supported and is located in the top groove of diaphragm screw 61b.
Said valve body 10, spool 20, valve gap 30 are processed by metal material.
The cross section that said flexible sheet 61 is positioned at the part of upper gas chamber is shaped to the arc section 611 with elastic force.This structure can make flexible sheet 61 utilize self elastic deformation moving up and down together along with spool.
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 that is 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 bottommosts under spring 50 elastic force effects; Spool bottom 23 is pressed in steel ball 110 tops, and the steel ball 110 bottoms pin 120 that is positioned is held and prevented that steel ball 110 is stuck in linear inverted cone chamber 113a; At this moment, three of two-position three way magnetic valve 90 all not conductings of mouth;
During the work ventilation; High pressure draught imports in the lower air chamber 113 from inlet suction port 70; Two-position three way magnetic valve 90 is automatically controlled to make that air inlet 93 and boost port 91 are in the mutual conduction state, leakage port 92 is in closed condition; High pressure gas gets into boost port 91 back arrival upper gas chambers 111 formation high pressure from lower air chamber 113 and acts on the flexible sheet 61 at valve core head 21 tops; Flexible sheet 61 is being with spool 20 and pad 61a to overcome on spring 50 elastic force and is being moved; The upper shed that lower seal 63 is left linear inverted cone chamber 113a makes and 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 conductings, and the steel ball 110 of this moment moves up along linear inverted cone chamber 113a under the effect of high pressure draught; The displacement that air-flow pore size between steel ball 110 and the linear inverted cone chamber 113a and steel ball 110 move up is linear variation, and so just can control the stroke that moves on the steel ball 110 is the purpose that the adjusting knob mechanism 40 control push rods 41 and the distance at spool 20 tops reach the control air flow rate.
When needs are died when resetting; 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 the mutual conduction state; High pressure gas in the upper gas chamber 111 gets into leakage port 92 backs by boost port 91 through two-position three way magnetic valve 90 and discharges from pressure release joint 100, and spool 20 resets under spring 50 elastic force effects and returns back to original state.
In addition; When air valve of the present invention is used in respirator; On valve body 10, also be connected to the synchronous pneumatic fittings 140 that is used for realizing synchronization action, this synchronous pneumatic fittings 140 is in order to provide high pressure gas to other air valve of respirator, makes itself and air valve synchronization action of the present invention.
For the air-tightness assembling, can select for use suitable sealing ring to seal between the parts assembling of the present invention.
By on can know that the present invention utilizes the deformation of flexible sheet 61 to reduce the friction between spool 20 and the valve body 10, this makes both kinematic accuracies be further enhanced and can reduce noise.By on can know, the present invention has that structure is ingenious, the valve core movement precision is high, noise is little, can be through automatically controlled break-make, can regulate the air flow rate size, be fit to the characteristics of using in the medical ventilator equipment.
Claims (7)
1. air valve controlled in a diaphragm type respiratory flow rhythm and pace of moving things; Include: valve body with air cavity; In air cavity, be equiped with spool, be provided with valve gap at the top of valve body, valve gap is provided with and is used for the move up and down screw mechanism of stroke size of adjustable diameter and screw adjusting spool; The fore-set of this screw mechanism below is connected with spring corresponding to the top of spool between valve gap and spool; It is characterized in that: spool is made up of valve core head, spool body and spool bottom; End face at valve core head is placed with flexible sheet and pad successively; The edge clamping of flexible sheet is established and is fixed between valve gap and the valve body; The diaphragm screw is fastened in the centre bore of spool after passing and passing pad, flexible sheet from top to bottom successively, is arranged with middle sealing ring on one's body at spool, is arranged with lower seal in the spool bottom; Wherein, The inwall air-tightness sliding-contact of sealing ring and air cavity in said, lower seal is pressed on the upper shed edge hermetic seal in the linear inverted cone chamber of air cavity bottommost under the spring force effect, under the airproof state of normality; Air cavity in forming upper gas chamber between flexible sheet, the middle sealing ring, between middle sealing ring, lower seal, forming, being positioned at the chamber that mainly is made up of said linear inverted cone chamber below the lower seal is lower air chamber; The inlet suction port that is connected on the valve body is communicated with the lower air chamber bottom opening; The air outlet adapter that is connected valve body is communicated with middle air cavity; At the other two-position three way magnetic valve that is connected with of valve body; 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 through first duct on the valve body; Leakage port is communicated with pressure release joint on being connected valve body through second duct on the valve body, and boost port is communicated with upper gas chamber through the 3rd duct on the valve body; When being in the air inlet state; Two-position three way magnetic valve is automatically controlled to make air inlet and boost port be in the mutual conduction state, leakage port is in closed condition; The high pressure gas that gets into inlet suction port is imported by air inlet and gets into upper gas chamber after the boost port and make spool overcome on the spring force to move, and the upper shed that lower seal is left linear inverted cone chamber makes and communicates 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 the mutual conduction state; High pressure gas in the upper gas chamber is discharged from the pressure release joint after getting into leakage port by boost port through two-position three way magnetic valve, and spool resets under the spring force effect.
2. a kind of diaphragm type respiratory flow rhythm and pace of moving things control air valve according to claim 1; It is characterized in that: said linear inverted cone intracavity is placed with steel ball; The spool bottom is shaped to the arc surface that is used for being fitted on the steel ball; Behind the valve body bottom slot, be provided with and be used for holding the positioning needle that steel ball prevents that steel ball is stuck, between positioning needle and the valve body bottom slot sealing ring is housed, the pore size variation that when steel ball moves on linear inverted cone chamber during ventilation and linear inverted cone chamber forms is linear increase.
3. a kind of diaphragm type respiratory flow rhythm and pace of moving things control air valve according to claim 2; It is characterized in that: the opening of giving vent to anger that said the 3rd duct is communicated with upper gas chamber is opened on the bottom surface that holds valve core head in the upper gas chamber, on said bottom surface, also is provided with to be used for the supporting bracket of isolating valve core print bottom and the opening of giving vent to anger.
4. according to claim 1 or 2 or 3 described a kind of diaphragm type respiratory flow rhythm and pace of moving things control air valves, it is characterized in that: on valve body, also be connected to the synchronous pneumatic fittings that is used for realizing synchronization action, pneumatic fittings is communicated with upper gas chamber synchronously.
5. according to claim 1 or 2 or 3 described a kind of diaphragm type respiratory flow rhythm and pace of moving things control air valves, it is characterized in that: said 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 following connecting thread chamber; The top of fore-set is thread cylinder, and the end face of this thread cylinder has keyway, forms circular revolving part in the rotating shaft, is provided with in the bottom of rotating shaft with being connected of said keyway corresponding matching to rotate key; After the assembling; Fore-set is movably connected in the following connecting thread intracavity of the inner chamber of valve gap through cylindrical thread; Said connection rotation key and said keyway snap fit; Said circular revolving part matched in clearance is contained in said going up in the rotation containing cavity, and the rotating shaft nut is threaded with the threaded portion of going up the rotation containing cavity outside of valve gap, and the bottom of fore-set is supported and is located in the top groove of diaphragm screw.
6. according to claim 1 or 2 or 3 described a kind of diaphragm type respiratory flow rhythm and pace of moving things control air valves, it is characterized in that: said valve body, spool, valve gap are processed by metal material.
7. a kind of diaphragm type respiratory flow rhythm and pace of moving things control air valve according to claim 1, it is characterized in that: the cross section that said flexible sheet is positioned at the part of upper gas chamber is shaped to the arc section with elastic force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110298859.1A CN102500029B (en) | 2011-09-28 | 2011-09-28 | Diaphragm type respiratory flow rhythm control air valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110298859.1A CN102500029B (en) | 2011-09-28 | 2011-09-28 | Diaphragm type respiratory flow rhythm control air valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102500029A true CN102500029A (en) | 2012-06-20 |
| CN102500029B CN102500029B (en) | 2015-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110298859.1A Expired - Fee Related CN102500029B (en) | 2011-09-28 | 2011-09-28 | Diaphragm type respiratory flow rhythm control air valve |
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| Country | Link |
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| CN (1) | CN102500029B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103893869A (en) * | 2012-12-29 | 2014-07-02 | 北京谊安医疗系统股份有限公司 | Device and method for improving control precision of air suction valve of breathing machine |
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4928684A (en) * | 1988-05-27 | 1990-05-29 | Salvia-Werk Gesellschaft Zur Herstellung Chemischer And Pharmazeutischer Erzeuginisse Mbh | Apparatus for assisting the spontaneous respiration of a patient |
| CN101310790A (en) * | 2007-06-28 | 2008-11-26 | 北京谊安医疗系统股份有限公司 | Multifunctional safety valve |
| CN101664575A (en) * | 2009-09-04 | 2010-03-10 | 深圳市安保科技有限公司 | Device for regulating respiratory flow and respirator |
| CN202236773U (en) * | 2011-09-28 | 2012-05-30 | 于邦仲 | Diaphragm-type respiratory flow rhythm control air valve |
-
2011
- 2011-09-28 CN CN201110298859.1A patent/CN102500029B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4928684A (en) * | 1988-05-27 | 1990-05-29 | Salvia-Werk Gesellschaft Zur Herstellung Chemischer And Pharmazeutischer Erzeuginisse Mbh | Apparatus for assisting the spontaneous respiration of a patient |
| CN101310790A (en) * | 2007-06-28 | 2008-11-26 | 北京谊安医疗系统股份有限公司 | Multifunctional safety valve |
| CN101664575A (en) * | 2009-09-04 | 2010-03-10 | 深圳市安保科技有限公司 | Device for regulating respiratory flow and respirator |
| CN202236773U (en) * | 2011-09-28 | 2012-05-30 | 于邦仲 | Diaphragm-type respiratory flow rhythm control air valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103893869A (en) * | 2012-12-29 | 2014-07-02 | 北京谊安医疗系统股份有限公司 | Device and method for improving control precision of air suction valve of breathing machine |
| CN103893869B (en) * | 2012-12-29 | 2016-04-20 | 北京谊安医疗系统股份有限公司 | A kind of apparatus and method improved respirator inlet valve control accuracy |
| 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 |
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| CN102500029B (en) | 2015-01-21 |
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