CN202961441U - Air/oxygen mixer of central gas supply terminal - Google Patents
Air/oxygen mixer of central gas supply terminal Download PDFInfo
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- CN202961441U CN202961441U CN 201220675352 CN201220675352U CN202961441U CN 202961441 U CN202961441 U CN 202961441U CN 201220675352 CN201220675352 CN 201220675352 CN 201220675352 U CN201220675352 U CN 201220675352U CN 202961441 U CN202961441 U CN 202961441U
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Abstract
The utility model relates to an air/oxygen mixer of a central gas supply terminal. The air/oxygen mixer of the central gas supply terminal comprises a valve seat. Two stages of pressure-balanced valves, an oxygen mixing device and a safety device are arranged on the valve seat. The safety device comprises a pressure regulation component, a pneumatic slide valve, a reed-type alarm component and a safety valve component. According to the air/oxygen mixer of the central gas supply terminal, gas is taken from the central gas supply terminal for the air/oxygen mixer, only an adjusting knob needs to be adjusted so as to provide oxygen in all types of concentrations for a patient, and the mixing degree is accurate. The air/oxygen mixer further has the advantages of being safe to use, environment-friendly and the like.
Description
Technical field
This utility model relates to medical center air feed field, relates in particular to a kind of empty oxygen mixer of central gas-supply terminal.
Background technology
Make the respirator of feeder with reservoir bag, the empty oxygen mixing device of normal configuration, the operation principle of this sky oxygen mixing device is: the oxygen of certain flow is in the advanced reservoir bag of entrance, when reservoir bag is directed when bleeding, air also from entrance in pipeline suction reservoir bag, thereby realize the mixing of empty oxygen.This sky oxygen mixing device is comprised of check valve and reservoir bag, reach predetermined oxygen concentration, obtains by regulating the oxygen input quantity.Although should the sky oxygen mixing device relatively simple for structure, the degree of mixing inaccuracy.When using in the ward, the noise that respirator produces can allow patient do not feel like oneself; Respirator is directly gas production from surrounding air, although simple Filters is arranged, but still might cause secondary pollution.
Summary of the invention
In order to address the above problem, the purpose of this utility model is to provide a kind of empty oxygen mixer of central gas-supply terminal, this sky oxygen mixer is got gas from central gas-supply type gas end, only need to regulate adjusting knob the oxygen of various concentration can be provided to patient, and degree of mixing is accurate, and this sky oxygen mixer uses the advantages such as safety, environmental protection in addition.
the technical solution of the utility model is: a kind of empty oxygen mixer of central gas-supply terminal, comprise valve seat, be provided with the air duct entrance on valve seat, the oxygen channel entrance, the mixed gas passage outlet, first class pressure balanced valve and secondary pressure balanced valve are set on described valve seat, the first class pressure balanced valve is identical with the structure of secondary pressure balanced valve, the balance adjustment diaphragm is set in the inner chamber of equilibrated valve, the pressure balance valve chamber is divided into air cavity and oxygen cavity, described air cavity, oxygen cavity inlet end arranges elastic device, the elastic device that is fixed in the pressure balance valve body is connected with balance adjustment diaphragm two axial ends respectively, the air cavity of first class pressure balanced valve, oxygen cavity inlet end passes through respectively air, the air duct entrance of oxygen input channel and valve seat, the oxygen channel entrance communicates, the air cavity of first class pressure balanced valve, oxygen cavity outlet side is respectively by the first air, the air cavity of oxygen output channel and secondary pressure balanced valve, oxygen cavity inlet end communicates, described valve seat is provided with the mixing die cavity, the air cavity of described secondary pressure balanced valve, oxygen cavity outlet side is respectively by the second air, the oxygen output channel communicates with the mixing die cavity, one mixed oxygen device is set in described mixing die cavity, should comprise adjusting knob by mixed oxygen device, mixed oxygen main spindle, axle sleeve, described mixed oxygen main spindle is multidiameter, multidiameter one axial end is provided with the air that mixes die cavity for sealing, the control valve of oxygen air inlet, this control valve comprises the inclined-plane of sealing surface and sealing surface both sides, another axial end of multidiameter extends valve seat and is fixedly connected with adjusting knob, trapezoidal thread and seal boss are set in the middle of multidiameter, the trapezoidal thread of multidiameter is fixedly connected with axle sleeve, be supported in valve seat by axle sleeve.
Described air duct, oxygen channel porch is provided with safety device.
described safety device comprises air slide, the reed-type alarm assemblies, relief valve assembly and two pressure adjusting parts, described two pressure adjusting parts are oppositely arranged on valve seat, one pressure adjusting part is arranged between the air input passage of air duct entrance and first class pressure balanced valve, another pressure adjusting part is arranged between the oxygen input channel of oxygen channel entrance and first class pressure balanced valve, be positioned with between two pressure adjusting parts and can produce the air slide of axial displacement, described reed-type alarm assemblies, the relief valve gas passage is set respectively between relief valve assembly and air slide, the alarm assemblies gas passage.
Described reed-type alarm assemblies is arranged on the air slide longitudinal end, the reed-type alarm assemblies comprises alarm base, reed holder, reed, the alarm whorl of base is connected in valve seat, the reed holder embeds in the alarm base in the interference mode, and an end of reed is fixed on the reed holder with rivet.
Described relief valve assembly is arranged on the air slide longitudinal end, relief valve assembly comprises safety valve base, the second steel ball, the second spring, adjustment screw, safety valve base is threadedly connected to valve seat, described adjustment screw is fixed on safety valve base by locking nut, between adjustment screw and the second steel ball, the second spring is set, the second steel ball is positioned at relief valve gas passage place by the second spring.
Described pressure adjusting part comprises pressure adjusting base, adjustment screw, the 3rd spring, and described pressure adjusting base screw thread is fixed in valve seat, and the adjustment screw screw thread is fixed in the pressure adjusting base, and described the 3rd spring is positioned between adjustment screw and air slide.
Described balance adjustment diaphragm comprises diaphragm and dish type skeleton, and described dish type skeleton is cast in diaphragm inside.
Described elastic device comprises seat ring, the first steel ball, the first spring, blanking cover, the air cavity of equilibrated valve and oxygen cavity include the air inlet cavity and give vent to anger cavity, described seat ring adopts the interference mode to be fixed in equilibrated valve air inlet cavity, the shoulder hole that runs through seat ring is set in the middle of circular race, the seat ring surrounding arranges air channel, the push rod that described the first steel ball is arranged on the dish type skeleton both sides of shoulder hole bigger diameter end and balance adjustment diaphragm coordinates, described the first spring is fixed between blanking cover and the first steel ball, and described blanking cover is installed on the pressure balance valve body.
Inclined-plane and the axial line of described mixed oxygen main spindle control valve are 5～10o angle.
On described mixed type cavity wall, boss is set, the ring-shaped ventilation groove is set on described axle sleeve, the ring-shaped ventilation groove arranges four equally distributed passages and communicates with air inlet or oxygen air inlet, and the air cavity of secondary pressure balanced valve or oxygen cavity outlet side communicate with the ring-shaped ventilation groove of axle sleeve by the second air or oxygen output channel.
The beneficial effects of the utility model are: the empty oxygen mixer of this central gas-supply terminal is got gas from central gas-supply type gas end, central gas-supply source compressor room is away from the lesion, and machine room is processed through sound insulation, can not impact surrounding enviroment, air supply system is with gas drier and Multistage filtering device, can guarantee the air that output is clean, stop secondary pollution.The empty oxygen mixer of central gas-supply terminal comprises valve seat, and first class pressure balanced valve and secondary pressure balanced valve are set on valve seat, and the application of two-stage equilibrated valve can make its flow-control comparatively accurate, and pressure oscillation is also less.Seat ring adopts the interference mode to be fixed in equilibrated valve air inlet cavity, has air channel on seat ring, and input gas enters balanced valve inside after buffering at this cavity.Described valve seat is provided with the mixing die cavity, one mixed oxygen device is set in described mixing die cavity, should comprise mixed oxygen main spindle by mixed oxygen device, described mixed oxygen main spindle one axial end is provided with for sealing and mixes the air of die cavity, the control valve of oxygen air inlet, this control valve comprises the inclined-plane of sealing surface and sealing surface both sides, control the air inflow of air inlet by the end face seal of control valve, but can make mixed oxygen concentration from 21%～100% free adjustment all, inclined-plane and the axial line of described mixed oxygen main spindle control valve are 5～10o angle, can make degree of mixing more accurate.Described air duct, oxygen channel porch is provided with safety device, described safety device comprises air slide, reed-type alarm assemblies, relief valve assembly and two pressure adjusting parts, during initial condition, relief valve gas passage, alarm assemblies gas passage are sealed by air slide, and gas enters valve body output after mixing through two-stage balanced device; As the air feed bleed pressure is poor when surpassing setting value (〉 0.1Mpa) time, air slide can produce corresponding displacement, this moment, relief valve and alarm assemblies gas passage were opened, and gas first produces after the alarm gas passage enters alarm assemblies and leaks, and the warning reed can send chimes of doom; When if pressure continues to increase, relief valve is opened, and gas can enter atmosphere through relief valve, thus guarantee user use oxygen safety.
Description of drawings
Fig. 1 is assembly drawing of the present utility model;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the B-B cutaway view of Fig. 1;
Fig. 4 is mixed oxygen main spindle schematic diagram of the present utility model;
Fig. 5 is relief valve assembly schematic diagram of the present utility model;
Fig. 6 is reed-type alarm assemblies schematic diagram of the present utility model;
Fig. 7 is air slide schematic diagram of the present utility model;
Fig. 8 is valve base part exploded view of the present utility model;
Fig. 9 is equilibrated valve schematic diagram of the present utility model.
in accompanying drawing, 1 is valve seat, 1a is the air duct entrance, 1b is the oxygen channel entrance, 1c is the mixed gas passage outlet, 2 is the first class pressure balanced valve, 3 is the secondary pressure balanced valve, 4 is the balance adjustment diaphragm, 5 is the dish type skeleton, 6 is seat ring, 7 is the first steel ball, 8 is the first spring, 9 is blanking cover, 10 are mixed oxygen main spindle, 101 is control valve, 102 is seal boss, 103 is trapezoidal thread, 11 is axle sleeve, 12 is adjusting knob, 13 is air slide, 14 is the pressure adjusting part, 141 is the pressure adjusting base, 142 is adjustment screw, 143 is the 3rd spring, 15 is relief valve assembly, 151 is safety valve base, 152 is adjustment screw, 153 is the second spring, 154 is the second steel ball, 16 is the reed-type alarm assemblies, 161 is the alarm base, 162 is the reed holder, 163 is reed, 17 are O shape circle, 18 is hexagon socket head cap screw, 19 for mixing die cavity.
The specific embodiment
Extremely shown in Figure 9 referring to Fig. 1, a kind of empty oxygen mixer of central gas-supply terminal, main material is aluminium alloy, comprise valve seat 1, be provided with air duct entrance 1a, oxygen channel entrance 1b, mixed gas passage outlet 1c on valve seat 1, air duct entrance 1a, oxygen channel entrance 1b coordinate special joint, respectively by flexible pipe directly pressure contracting air and oxygen on the central gas-supply type gas end.Mixed gas passage outlet 1c is connected with the oxygen inhalation apparatus interface, the output mist.First class pressure balanced valve 2 and secondary pressure balanced valve 3 are set on described valve seat, first class pressure balanced valve 2 is identical with the structure of secondary pressure balanced valve 3, balance adjustment diaphragm 4 is set in the inner chamber of equilibrated valve, the pressure balance valve chamber is divided into air cavity and oxygen cavity, described balance adjustment diaphragm 4 comprises diaphragm and dish type skeleton 5, and described dish type skeleton 5 is cast in diaphragm inside.described air cavity, oxygen cavity inlet end arranges elastic device, the elastic device that is fixed in the pressure balance valve body is connected with 4 liang of axial ends of balance adjustment diaphragm respectively, in the present embodiment, described elastic device comprises seat ring 6, the first steel ball 7, the first spring 8, blanking cover 9, the air cavity of equilibrated valve and oxygen cavity include the air inlet cavity and give vent to anger cavity, described seat ring 6 adopts the interference mode to be fixed in equilibrated valve air inlet cavity, the shoulder hole that runs through seat ring is set in the middle of circular race 6, the seat ring surrounding arranges air channel, input gas enters equilibrated valve inside after buffering at this cavity.The push rod that described the first steel ball 7 is arranged on dish type skeleton 5 both sides of shoulder hole bigger diameter end and balance adjustment diaphragm coordinates, and described the first spring 8 is fixed between blanking cover and the first steel ball 7, and described blanking cover 9 is installed on the pressure balance valve body.the air cavity of first class pressure balanced valve 2, oxygen cavity inlet end communicate with air duct entrance, the oxygen channel entrance of valve seat 1 by air, oxygen input channel respectively, and the air cavity of first class pressure balanced valve 2, oxygen cavity outlet side communicates with air cavity, the oxygen cavity inlet end of secondary pressure balanced valve 3 by the first air, oxygen output channel respectively, described valve seat 1 is provided with and mixes die cavity 19, the air cavity of described secondary pressure balanced valve, oxygen cavity outlet side is respectively by the second air, the oxygen output channel communicates with mixing die cavity 19, one mixed oxygen device is set in described mixing die cavity 19, should comprise adjusting knob 12 by mixed oxygen device, mixed oxygen main spindle 10, axle sleeve 11, described mixed oxygen main spindle 10 is multidiameter, multidiameter one axial end is provided with the air that mixes die cavity for sealing, the control valve 101 of oxygen air inlet, this control valve 101 comprises the inclined-plane of sealing surface and sealing surface both sides, preferably, inclined-plane and the axial line of described mixed oxygen main spindle control valve 101 are 5～10o angle.Another axial end of multidiameter extends valve seat and is fixedly connected with adjusting knob 12, and trapezoidal thread 103 and seal boss 102 are set in the middle of multidiameter, and the trapezoidal thread 103 of multidiameter is fixedly connected with axle sleeve 11, is supported in valve seat 1 by axle sleeve 11.The air cavity of secondary pressure balanced valve 3, oxygen cavity outlet side communicates with air chamber, oxygen chamber by the second air, oxygen output channel respectively.In the present embodiment, on described mixing die cavity 19 inwalls, boss is set, on described axle sleeve 11, the ring-shaped ventilation groove is set, the ring-shaped ventilation groove arranges four equally distributed passages and communicates with air inlet or oxygen air inlet, and the air cavity of secondary pressure balanced valve 3 or oxygen cavity outlet side communicate with the ring-shaped ventilation groove of axle sleeve 11 by the second air or oxygen output channel.
Described air duct, oxygen channel entrance (1a, 1b) locate to be provided with safety device.described safety device comprises air slide 13, reed-type alarm assemblies 16, relief valve assembly 15 and two pressure adjusting parts 14, described two pressure adjusting parts 14 are oppositely arranged on valve seat 1, described pressure adjusting part 14 comprises pressure adjusting base 141, adjustment screw 142, the 3rd spring 143, described pressure adjusting base 141 screw threads are fixed in valve seat 1, adjustment screw 142 screw threads are fixed in pressure adjusting base 141, described the 3rd spring 143 is positioned between adjustment screw 142 and air slide 13, described adjustment screw 142 by screw thread in the interior movement of pressure adjusting base 141, satisfy the needs of regulating among a small circle pressure.One pressure adjusting part is arranged between the air input passage of air duct entrance and first class pressure balanced valve 1, another pressure adjusting part is arranged between the oxygen input channel of oxygen channel entrance and first class pressure balanced valve 1, be positioned with between two pressure adjusting parts 14 and can produce the air slide 13 of axial displacement, relief valve gas passage, alarm assemblies gas passage are set respectively between described reed-type alarm assemblies 16, relief valve assembly 15 and air slide 13, and described air slide 13 is used for sealing relief valve gas passage, alarm assemblies gas passage.
referring to Fig. 5, described relief valve assembly 15 is arranged on air slide 13 longitudinal ends, relief valve assembly 15 comprises safety valve base 151, the second steel ball 154, the second spring 153, adjustment screw 152, safety valve base 151 is threadedly connected to valve seat 1, described safety valve base 151 radially is provided with a plurality of passages, preferably, described passage is four, and four passages evenly distribute, described adjustment screw 152 is fixed on safety valve base 151 by locking nut, between adjustment screw 152 and the second steel ball 154, the second spring 153 is set, the second steel ball 154 is positioned at relief valve gas passage place by the second spring 153.
Referring to Fig. 6, described reed-type alarm assemblies 16 is arranged on air slide 13 longitudinal ends, reed-type alarm assemblies 16 comprises alarm base 161, reed holder 162, reed 163, alarm base 161 is threadedly connected to valve seat 1, reed holder 162 embeds in alarm base 161 in the interference mode, and an end of reed 163 is fixed on reed holder 162 with rivet.
Referring to Fig. 8, on described valve seat 1, through hole and tapped blind hole are set, the top of described valve seat 1 is processed with the gas passage of two-stage balanced valve group, the gas passage junction of valve seat 1 and two-stage balanced valve group all arranges O shape circle 17, the air of valve seat 1 bottom, oxygen channel entrance (1a, 1b) coordinate special joint, directly get gas from central gas-supply type gas end by flexible pipe, i.e. air source inlet.
Referring to Fig. 9, tapped blind hole and through hole are set on described equilibrated valve, described two-stage equilibrated valve connects into an integral body by hexagon socket head cap screw 25, and the integral body that the two-stage equilibrated valve connects into is bolted on valve seat 1.
This sky oxygen mixer is applicable to central gas-supply type (when output pressure is 0.4Mpa), (output flow is 2～3L/Min) in the low discharge oxygen uptake.
Pressure equaliser operation principle and flow process:
Compressed air, oxygen on valve seat the input gas passage and after the input gas passage in balanced valve enters two individual cavity of first class pressure balanced valve, output gas passage in equilibrated valve and the output gas passage on valve seat enter two individual cavity of secondary pressure balanced valve again, at last, output gas passage by secondary pressure balanced valve inside and the output gas passage on valve seat enter in valve seat cavity separately, and whole intake process is completed.
When two kinds of gas pressures are identical, diaphragm mediates, if when the consumption of certain gas increased, diaphragm can deform, the dish type skeleton produces displacement thereupon, adjust simultaneously the steel ball open gap at chamber place, two kinds of gas accesses, the side steel ball open gap that gas consumption is large increases, and the opposite side open gap reduces thereupon, makes diaphragm reach a kind of new poised state, after regulating by the two-stage pressure equaliser, two kinds of gas enters cavity separately.The application of two-stage pressure equaliser can make its flow-control comparatively accurate, and pressure oscillation is also less.
Mixed oxygen device operation principle and flow process: two kinds of gas is after two-stage balanced valve enters in valve body separately cavity, by regulating adjusting knob, mixed oxygen main spindle is moved axially, change the position of mixed oxygen main spindle control valve in mixing die cavity, when mixed oxygen main spindle position is in an end, end face seal by control valve is with this road inlet close, the air inflow on another road reaches maximum, otherwise too.When mixing certain position, centre of die cavity, two air inlets all have gas to enter when mixed oxygen main spindle control valve, and the gas of at this moment mixed gas passage outlet output is gaseous mixture.But mixed oxygen concentration is from 21%～100% free adjustment, and mixed oxygen concentration is completed by manual adjustments.When if oxygen concentration is 100%, can close air inlet by sealing surface; When if oxygen concentration is 21%, can close the oxygen air inlet by sealing surface.
Safety device operation principle and flow process:
Air slide relies on the spring in the pressure adjusting part to be positioned at the valve body centre position.During initial condition, relief valve gas passage, alarm assemblies gas passage are sealed by air slide, and gas enters valve body output after mixing through two-stage balanced device; As the air feed bleed pressure is poor when surpassing setting value (〉 0.1Mpa) time, air slide can produce corresponding displacement, this moment, relief valve and alarm assemblies gas passage were opened, and gas first produces after the alarm gas passage enters alarm assemblies and leaks, and the warning reed can send chimes of doom; When if pressure continues to increase, relief valve is opened, and gas can enter atmosphere through relief valve, thus guarantee user use oxygen safety.
Claims (10)
1. the empty oxygen mixer of a central gas-supply terminal, comprise valve seat, be provided with the air duct entrance on valve seat, the oxygen channel entrance, the mixed gas passage outlet, it is characterized in that: first class pressure balanced valve and secondary pressure balanced valve are set on described valve seat, the first class pressure balanced valve is identical with the structure of secondary pressure balanced valve, the balance adjustment diaphragm is set in the inner chamber of equilibrated valve, the pressure balance valve chamber is divided into air cavity and oxygen cavity, described air cavity, oxygen cavity inlet end arranges elastic device, the elastic device that is fixed in the pressure balance valve body is connected with balance adjustment diaphragm two axial ends respectively, the air cavity of first class pressure balanced valve, oxygen cavity inlet end passes through respectively air, the air duct entrance of oxygen input channel and valve seat, the oxygen channel entrance communicates, the air cavity of first class pressure balanced valve, oxygen cavity outlet side is respectively by the first air, the air cavity of oxygen output channel and secondary pressure balanced valve, oxygen cavity inlet end communicates, described valve seat is provided with the mixing die cavity, the air cavity of described secondary pressure balanced valve, oxygen cavity outlet side is respectively by the second air, the oxygen output channel communicates with the mixing die cavity, one mixed oxygen device is set in described mixing die cavity, should comprise adjusting knob by mixed oxygen device, mixed oxygen main spindle, axle sleeve, described mixed oxygen main spindle is multidiameter, multidiameter one axial end is provided with the air that mixes die cavity for sealing, the control valve of oxygen air inlet, this control valve comprises the inclined-plane of sealing surface and sealing surface both sides, another axial end of multidiameter extends valve seat and is fixedly connected with adjusting knob, trapezoidal thread and seal boss are set in the middle of multidiameter, the trapezoidal thread of multidiameter is fixedly connected with axle sleeve, be supported in valve seat by axle sleeve.
2. the empty oxygen mixer of central gas-supply terminal according to claim 1 is characterized in that: described air duct, oxygen channel porch is provided with safety device.
3. the empty oxygen mixer of central gas-supply terminal according to claim 2, it is characterized in that: described safety device comprises air slide, the reed-type alarm assemblies, relief valve assembly and two pressure adjusting parts, described two pressure adjusting parts are oppositely arranged on valve seat, one pressure adjusting part is arranged between the air input passage of air duct entrance and first class pressure balanced valve, another pressure adjusting part is arranged between the oxygen input channel of oxygen channel entrance and first class pressure balanced valve, be positioned with between two pressure adjusting parts and can produce the air slide of axial displacement, described reed-type alarm assemblies, the relief valve gas passage is set respectively between relief valve assembly and air slide, the alarm assemblies gas passage.
4. the empty oxygen mixer of central gas-supply terminal according to claim 3, it is characterized in that: described reed-type alarm assemblies is arranged on the air slide longitudinal end, the reed-type alarm assemblies comprises alarm base, reed holder, reed, the alarm whorl of base is connected in valve seat, the reed holder embeds in the alarm base in the interference mode, and an end of reed is fixed on the reed holder with rivet.
5. the empty oxygen mixer of central gas-supply terminal according to claim 3, it is characterized in that: described relief valve assembly is arranged on the air slide longitudinal end, relief valve assembly comprises safety valve base, the second steel ball, the second spring, adjustment screw, safety valve base is threadedly connected to valve seat, described adjustment screw is fixed on safety valve base by locking nut, between adjustment screw and the second steel ball, the second spring is set, the second steel ball is positioned at relief valve gas passage place by the second spring.
6. the empty oxygen mixer of central gas-supply terminal according to claim 3, it is characterized in that: described pressure adjusting part comprises pressure adjusting base, adjustment screw, the 3rd spring, described pressure adjusting base screw thread is fixed in valve seat, the adjustment screw screw thread is fixed in the pressure adjusting base, and described the 3rd spring is positioned between adjustment screw and air slide.
7. the empty oxygen mixer of central gas-supply terminal according to claim 1, it is characterized in that: described balance adjustment diaphragm comprises diaphragm and dish type skeleton, described dish type skeleton is cast in diaphragm inside.
8. the empty oxygen mixer of central gas-supply terminal according to claim 1, it is characterized in that: described elastic device comprises seat ring, the first steel ball, the first spring, blanking cover, the air cavity of equilibrated valve and oxygen cavity include the air inlet cavity and give vent to anger cavity, described seat ring adopts the interference mode to be fixed in equilibrated valve air inlet cavity, the shoulder hole that runs through seat ring is set in the middle of circular race, the seat ring surrounding arranges air channel, the push rod that described the first steel ball is arranged on the dish type skeleton both sides of shoulder hole bigger diameter end and balance adjustment diaphragm coordinates, described the first spring is fixed between blanking cover and the first steel ball, described blanking cover is installed on the pressure balance valve body.
9. the empty oxygen mixer of central gas-supply terminal according to claim 1, it is characterized in that: inclined-plane and the axial line of described mixed oxygen main spindle control valve are 5～10o angle.
10. the empty oxygen mixer of central gas-supply terminal according to claim 1, it is characterized in that: on described mixed type cavity wall, boss is set, the ring-shaped ventilation groove is set on described axle sleeve, the ring-shaped ventilation groove arranges four equally distributed passages and communicates with air inlet or oxygen air inlet, and the air cavity of secondary pressure balanced valve or oxygen cavity outlet side communicate with the ring-shaped ventilation groove of axle sleeve by the second air or oxygen output channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220675352 CN202961441U (en) | 2012-12-10 | 2012-12-10 | Air/oxygen mixer of central gas supply terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220675352 CN202961441U (en) | 2012-12-10 | 2012-12-10 | Air/oxygen mixer of central gas supply terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202961441U true CN202961441U (en) | 2013-06-05 |
Family
ID=48502579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220675352 Expired - Fee Related CN202961441U (en) | 2012-12-10 | 2012-12-10 | Air/oxygen mixer of central gas supply terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202961441U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691042A (en) * | 2013-12-03 | 2014-04-02 | 上海力申科学仪器有限公司 | Medical gas mixing device |
| CN105963836A (en) * | 2016-05-31 | 2016-09-28 | 成都德善能科技有限公司 | Novel medical breathing machine |
-
2012
- 2012-12-10 CN CN 201220675352 patent/CN202961441U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691042A (en) * | 2013-12-03 | 2014-04-02 | 上海力申科学仪器有限公司 | Medical gas mixing device |
| CN103691042B (en) * | 2013-12-03 | 2017-03-08 | 上海力申科学仪器有限公司 | Medical gases mixing arrangement |
| CN105963836A (en) * | 2016-05-31 | 2016-09-28 | 成都德善能科技有限公司 | Novel medical breathing machine |
| CN105963836B (en) * | 2016-05-31 | 2019-02-15 | 广州五颗星信息科技有限公司 | A kind of novel medical ventilator |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20161210 |
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| CF01 | Termination of patent right due to non-payment of annual fee |