CN109464114A - A kind of double feeding pneumatic systems of endoscope-use - Google Patents
A kind of double feeding pneumatic systems of endoscope-use Download PDFInfo
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- CN109464114A CN109464114A CN201910022065.9A CN201910022065A CN109464114A CN 109464114 A CN109464114 A CN 109464114A CN 201910022065 A CN201910022065 A CN 201910022065A CN 109464114 A CN109464114 A CN 109464114A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/012—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/0661—Endoscope light sources
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/70—Combining sequestration of CO2 and exploitation of hydrocarbons by injecting CO2 or carbonated water in oil wells
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Abstract
The present invention relates to the field of medical instrument technology, disclose a kind of double feeding pneumatic systems of endoscope-use, in the inside of cold light source device equipped with providing the air gas circuit of air for endoscope mirror body and providing the carbon dioxide gas circuit of carbon dioxide, air gas circuit and carbon dioxide gas circuit are connected with gas switching device respectively；Air gas circuit and carbon dioxide gas circuit are connect by gas switching device with gas output end.The inside of cold light source device is arranged in air gas circuit and carbon dioxide gas circuit by the present invention, and air gas circuit and carbon dioxide gas circuit are connect by gas switching device with gas output end, convenient for switching two kinds of gases on cold light source device.
Description
Technical field
The present invention relates to the field of medical instrument technology, and in particular to a kind of double feeding pneumatic systems of endoscope-use.
Background technique
It is general gentle with water is provided for endoscope mirror body for widely applied endoscopic system in the medical field
Water plenum system is sent, plenum system, which generally comprises air, supplies gas and supply gas with carbon dioxide.As shown in Figure 1, current technology is two
The outside that cold light source device is arranged in carbonoxide gas circuit water receiving gas cylinder 2 is that endoscope mirror body send water to supply gas；The setting of air gas circuit exists
Then the inside of cold light source device send water to supply gas through the aqueous vapor bottle 1 outside cold light source device to endoscope mirror body, and air gas
Not set gas flow monitoring on the road.
Above scheme mainly has a following deficiency: first, the inside of cold light source device, carbon dioxide gas is arranged in air gas circuit
The outside of cold light source device is arranged in road, it is difficult on cold light source device operate two kinds of gas switching, switching carbon dioxide and
The operation of air is realized by replacing aqueous vapor bottle, is operated relatively cumbersome.Second, carbon dioxide gas road is generally circumscribed with two
Carbonoxide feeder can provide flow monitoring, but typically no air mass flow monitoring in air gas circuit, cannot achieve to sky
The monitoring and control of gas gas circuit.
Summary of the invention
The invention is intended to provide a kind of double feeding pneumatic systems of endoscope-use, air and carbon dioxide gas access are all set
It sets in the inside of cold light source device, convenient for switching two kinds of gases on cold light source device.
In order to achieve the above objectives, the present invention adopts the following technical scheme: a kind of double feeding pneumatic systems of endoscope-use, cold
The inside of light supply apparatus is equipped with the air gas circuit for providing air and provides the carbon dioxide gas circuit of carbon dioxide, air gas circuit and two
Carbonoxide gas circuit is connected with gas switching device respectively；Air gas circuit and carbon dioxide gas circuit pass through gas switching device and gas
Output end connection, is switched, delivery air or carbon dioxide by gas switching device.
In above-mentioned technical proposal, air gas circuit and carbon dioxide gas circuit are arranged in the inside of cold light source device, Er Qiekong
Gas gas circuit and carbon dioxide gas circuit are connect by gas switching device with gas output end, convenient for switching two on cold light source device
Kind gas.
Further, flow detector is provided in air gas circuit.Flow detector is set to monitor air in real time
Gas flow in gas circuit is monitored and controls to the flow to air gas circuit.
Further, aqueous vapor bottle is respectively arranged in air gas circuit and carbon dioxide gas road；Or gas output end connection
There is aqueous vapor bottle；Or aqueous vapor bottle has been independently arranged it.Three kinds of different connection sides of air gas circuit and carbon dioxide gas circuit and aqueous vapor bottle
Formula.
Further, carbon dioxide gas road is equipped with the first two-position three way magnetic valve, and the first two-position three way magnetic valve is communicated with
First check valve, the first check valve are connected to gas output end；
Flow detector includes the flowmeter being located in air gas circuit；
Air pump is additionally provided in air gas circuit, the gas outlet of air pump is communicated with the 4th speed governing valve, the 4th speed governing valve
Gas outlet is connected to flowmeter, and the gas outlet of the flowmeter is communicated with second one-way valve, second one-way valve also with gas output end
Connection.
In above-mentioned technical proposal, the one or two three magnet valves are set on carbon dioxide gas road, by the first two-position three way electricity
The control system of switching on or off electricity of magnet valve realizes that carbon dioxide gas circuit controls the on-off of carbon dioxide, and the flow of carbon dioxide is then by dioxy
Change carbon feeder to adjust.Air pump is set in air gas circuit, by the control system of switching on or off electricity to air pump, realizes air gas circuit pair
The on-off of air controls；The total flow of air in 4th speed regulation valve regulation air gas circuit is set；Flowmeter is set to monitor in real time
Gas flow in air gas circuit, and will test the control circuit board that signal feeds back to cold light source device, to air gas circuit
Flow be monitored and control.
Further, the outside of cold light source device is arranged in the feeder for providing carbon dioxide.By the biggish dioxy of volume
Change the outside that cold light source device is arranged in carbon feeder, reduces the volume of cold light source device.
Further, the first two-position three way magnetic valve is also communicated with the first speed governing valve being in communication with the outside, the first two-position three way
The gas outlet of solenoid valve is connected to the air inlet of the first check valve, the gas vent of the first two-position three way magnetic valve and the first speed governing valve
Air inlet connection.First speed governing valve mainly plays safety effect, when carbon dioxide gas circuit is not turned on, discharges gas, avoids
Higher air pressure is kept in carbon dioxide gas circuit, reduces risk.
Further, the second two-position three way magnetic valve is additionally provided between the gas outlet of air pump and the 4th speed governing valve；This second
The gas vent of two-position three way magnetic valve is connected to the air inlet of the 4th speed governing valve；The gas outlet of second two-position three way magnetic valve connects
It is connected with the second speed governing valve being in communication with the outside.
The gas vent of second two-position three way magnetic valve is connected to the air inlet of the 4th speed governing valve, when so that air pump being powered,
There is air always in air gas circuit；When gas is released from the second speed governing valve, the air mass flow in air gas circuit will be reduced,
Two grades are set by air mass flow as needed with this.
Further, air gas circuit further includes the three or two be located between the second two-position three way magnetic valve and the 4th speed governing valve
Three-way magnetic valve, the gas vent of the second two-position three way magnetic valve are connected to the air inlet of the third two-position three way magnetic valve, this
The gas vent of three two-position three way magnetic valves is connected to the air inlet of the 4th speed governing valve, the gas outlet of the third two-position three way magnetic valve
It is communicated with the third speed governing valve being in communication with the outside.
It is empty when gas is released from third speed governing valve by adding third two-position three way magnetic valve and third speed governing valve
Air mass flow in gas gas circuit can be reduced again, set third gear for air mass flow as needed with this.
Further, air gas circuit further includes pressure sensor, which is arranged close to flowmeter.Effective monitoring is empty
The air pressure of gas gas circuit avoids air mass flow is excessive in the event of a failure from leading to insecurity factor, with the safety of lifting system
Performance.
Further, the gas outlet of the first speed governing valve, and/or the second speed governing valve, and/or third speed governing valve is located at cold light source dress
The inside set.Thus the gas released can inside auxiliary heat dissipation to cold light source device, rationally utilize.
Compared with prior art, beneficial effects of the present invention are as follows:
(1) gas supply or the switching for passing through button operation air and carbon dioxide on cold light source device, replace previous skill
The effect that art replacement hardware device is just able to achieve, so that operation is simpler.
(2) carbon dioxide gas road is equipped with pressure relief device, improves the safety of the system when closing carbon dioxide gas circuit.
(3) air gas circuit realizes the regulatory function of ventilation flow rate size by solenoid valve and speed governing valve small in size, contracting
The small volume of system.
(4) flowmeter of air flue and pressure sensor effective monitoring gas flow or gas pressure, avoid occurring
Air pressure is excessively high or flow is excessive when failure leads to insecurity factor, improves the security performance of system.
Detailed description of the invention
Fig. 1 is that the gas of endoscope plenum system in the prior art conveys flow diagram.
Fig. 2 is the structural schematic diagram of cold light source device front end.
Fig. 3 is the structural schematic diagram one that the air-channel system inside cold light source device is arranged in.
Fig. 4 is the structural schematic diagram two that the air-channel system inside cold light source device is arranged in.
Specific embodiment
Below by specific embodiment, the present invention is described in further detail:
Appended drawing reference in Figure of description includes: cold light source device 100, carbon dioxide gas circuit 10, the first two-position three way
Solenoid valve 101, the first speed governing valve 102, the first check valve 103, aqueous vapor bottle 20, air gas circuit 30, air pump 301, the 2nd 2
Three-way magnetic valve 302, the second speed governing valve 303, third two-position three way magnetic valve 304, third speed governing valve 305, the 4th speed governing valve
306, flowmeter 307, second one-way valve 308, pressure sensor 309, endoscope mirror body 40, control panel 50, gas switching are pressed
Button 501, air mass flow button 502, light output hole 601, gas output end 602, carbon dioxide feeder 70.
Embodiment one
Embodiment is substantially as shown in Figures 2 and 3: a kind of double feeding pneumatic systems of endoscope-use, in cold light source device 100
Outside is equipped with carbon dioxide feeder 70, and aqueous vapor bottle 20, cold light source device are linked on the side wall of cold light source device 100
100 inside is equipped with two for providing the air gas circuit 30 of air to endoscope mirror body 40 and being connected to carbon dioxide feeder 70
Carbonoxide gas circuit 10.Air gas circuit 30 and carbon dioxide gas circuit 10 are connected with gas switching device respectively, air gas circuit 30 and two
Carbonoxide gas circuit 10 is converged at the gas output end 602 on cold light source device 100 by gas switching device.Gas output end
602 (output carbon dioxide or air) are connect with aqueous vapor bottle 20, and aqueous vapor bottle 20 is equipped with the water outlet being connected to endoscope mirror body
And gas outlet, water outlet are that endoscope mirror body 40 provides water or gas outlet provides air or carbon dioxide.Gas output end
602 connect with aqueous vapor bottle 20, and the water in aqueous vapor bottle 20 is extruded by gas pressure, no setting is required water pump.Certainly also in air gas circuit
30 and carbon dioxide gas circuit 10 on aqueous vapor bottle 20 is respectively set；Or as shown in figure 4, independently of air gas circuit 30 and carbon dioxide
Aqueous vapor bottle 20 is arranged in gas circuit 10, but setting water pump is needed to supply water at this time.
Carbon dioxide gas circuit 10 is equipped with the first two-position three way electricity being connected to the gas outlet of carbon dioxide feeder 70
The 3V106FI1F normal-closed electromagnetic valve of magnet valve 101, preferably Ya De visitor, first two-position three way magnetic valve 101 include air inlet,
Gas outlet and gas vent, air inlet are connected to gas vent always, pass through the control to 101 power on/off of the first two-position three way magnetic valve
System, makes air inlet be connected to or cut off with gas outlet, realizes that carbon dioxide gas circuit 10 controls the on-off of carbon dioxide.One or two
The gas outlet of three-way magnetic valve 101 is communicated with the first check valve 103, and the gas outlet of the first check valve 103 passes through tracheae and gas
Output end 602 is connected to；The gas vent of first two-position three way magnetic valve 101 is communicated with the first speed governing valve 102, preferably Ya De visitor
PSL401A-S type speed governing valve, the gas outlet of the first speed governing valve 102 are located at the inside of cold light source device 100.
The effect of first check valve 103 is to guarantee that carbon dioxide gas positive can only be flowed toward 40 direction of endoscope mirror body,
Prevent the gas generated due to various reasons back towards the internal flow of cold light source device 100.The effect of first speed governing valve 102 is
When carbon dioxide gas circuit 10 is not turned on, released titanium dioxide by the gas vent of two-position three way magnetic valve by the first speed governing valve 102
Carbon gas, the flow velocity for discharging gas can be pre-adjusted according to first speed governing valve 102, avoid protecting in carbon dioxide gas circuit 10
Higher air pressure is held, risk is reduced.Since carbon dioxide feeder 70 is external outside cold light source device 100, have independent
Flow regulator, the first speed governing valve 102 mainly plays safety effect, can only release partial gas in cold light in the course of work
Inside source device 100.
Air gas circuit 30 includes the air pump 301 inside cold light source device 100, and the gas outlet of air pump 301 is successively
It is communicated with the second two-position three way magnetic valve 302, third two-position three way magnetic valve 304, the 4th speed governing valve 306, pressure sensor
309, flowmeter 307 and second one-way valve 308, second one-way valve 308 are connected to by tracheae with gas output end 602.Two or two
The 3V106FI2F type solenoid valve of 304 preferred Ya De visitor of position-3-way solenoid valve 302 and third two-position three way magnetic valve also includes
Air inlet, gas outlet and gas vent, air inlet are connected to gas vent always.The gas vent of second two-position three way magnetic valve 302
It is connected to the air inlet of third two-position three way magnetic valve 304, the gas outlet of the second two-position three way magnetic valve 302 is communicated with the second tune
Fast valve 303, the gas outlet of the second speed governing valve 303 are located at the inside of cold light source device 100, and the gas thus released can be to cold light source
The inside auxiliary heat dissipation of device 100.The air inlet of the gas vent of third two-position three way magnetic valve 304 and the 4th speed governing valve 306 connects
It is logical；The gas outlet of third two-position three way magnetic valve 304 is communicated with third speed governing valve 305, the gas outlet of third speed governing valve 305 also position
In the inside of cold light source device 100.
Second speed governing valve 303, third speed governing valve 305 and the 4th speed governing valve 306 are it is also preferred that the PSL401A-S of Ya De visitor is normally closed
Type speed governing valve.Whether the second two-position three way magnetic valve 302 control gas releases from the second speed governing valve 303, when gas is from second
When releasing at speed governing valve 303, the air mass flow in air gas circuit 30 will be reduced.Third two-position three way magnetic valve 304 controls gas
Whether body releases from third speed governing valve 305, the air when gas is released from third speed governing valve 305, in air gas circuit 30
Flow can also be reduced.The effect of 4th speed governing valve 306 is to adjust the total flow of air in air gas circuit 30.Second speed governing valve, 303 He
Third speed governing valve 305 is used to adjust the size for the amount of releasing, so that the air mass flow of air gas circuit 30 has large, medium and small three shelves
It is secondary.
The MP3V5050GP series 98ASA99303D model at 309 preferred grace intelligence Pu of pressure sensor is used to monitor in real time
Gas pressure in air gas circuit 30, and will test the control circuit board that signal feeds back to cold light source device 100, to air
The pressure of gas circuit 30 is monitored and controls.The D6F-10A61-000 model of the preferred Omron of flowmeter 307 is used to real-time
The gas flow in air gas circuit 30 is monitored, and will test the control circuit board that signal feeds back to cold light source device 100, to right
The flow of air gas circuit 30 is monitored and controls.Second one-way valve 308 guarantees that the air in air gas circuit 30 can only just be yearned for
The flowing of 40 direction of endoscope mirror body, prevents the gas generated due to various reasons back towards 100 internal flow of cold light source device.
First two-position three way magnetic valve 101, the second two-position three way magnetic valve 302, third two-position three way magnetic valve 304, stream
Meter 307, pressure sensor 309 and air pump 301 and the control circuit board of cold light source device 100 are electrically connected.
As shown in Fig. 2, gas output end 602 and light output hole 601 are located at the front end of cold light source device 100.In cold light source
The control panel 50 of 100 front end of device is equipped with air mass flow button 502, and air mass flow button 502 controls in air gas circuit 30
The size of air mass flow, specifically: 1) air mass flow button 502 is clicked, air pump 301 is powered, the second two-position three-way electromagnetic
Valve 302 and third two-position three way magnetic valve 304 are powered, and air inlet is connected to gas outlet and gas vent simultaneously, partial air from
The gas outlet of second speed governing valve 303 discharges, then has portion gas to discharge from the gas outlet of third speed governing valve 305；Open air
Gas circuit 30 and be flow minimum shelves.2) air mass flow button 502 is clicked again, third two-position three way magnetic valve 304 powers off, into
Port is only connected to gas vent, so that discharging without air from the gas outlet of third speed governing valve 305；It adjusts during air mass flow is
Shelves.3) air mass flow button 502, the power-off of the second two-position three way magnetic valve 302 are clicked again, and air inlet only connects with gas vent
It is logical, so that being discharged without air from the gas outlet of the second speed governing valve 303；Adjusting air mass flow is maximum.4) it clicks again
Air mass flow button 502, air pump 301 power off, i.e. closing air gas circuit 30.It loops back and forth like this, realizes connection, cutting air
Air mass flow size in gas circuit 30 and adjusting air gas circuit 30.Existing multi gear position key can be used in air mass flow button 502
The prior art can be used in switch or multi gear position rotary switch, specific connection and mode of operation, and this will not be detailed here.
As shown in Fig. 2, gas switching device includes the gas switching push button 501 being located on control panel 50, work as titanium dioxide
When carbon feeder 70 opens gas supply, gas switching push button 501 carries out the handover operation of carbon dioxide and air, specifically: 1)
Primary by gas switching push button 501, then the first two-position three way magnetic valve 101 is powered, first two-position three way magnetic valve 101 into
Port is connected to gas vent and gas outlet simultaneously, while air pump 301 powers off；I.e. carbon dioxide gas circuit 10 is opened, while air
Gas circuit 30 is closed.2) gas switching push button 501, the power-off of the first two-position three way magnetic valve 101, first two-position three way are clicked again
The air inlet of solenoid valve 101 is only connected to gas vent；I.e. carbon dioxide gas circuit 10 is closed.Gas switching push button 501 can be used existing
The prior art can be used in some multi gear positions key switch or multi gear position rotary switch, specific connection and mode of operation, herein not
It is described in detail again.
Embodiment two
The present embodiment and embodiment one the difference is that, when air mass flow button 502 in operation diagram 2, air gas
Air discharges process difference in road 30, specifically: as shown in figure 3, the gas outlet gas output for being pre-adjusted third speed governing valve 305 is
A, the gas outlet gas output of the second speed governing valve 303 is B, and A is less than B.1) air mass flow button 502 is clicked, air pump 301 is logical
Electricity, the second two-position three way magnetic valve 302 and third two-position three way magnetic valve 304 are powered, air inlet simultaneously with gas outlet and put
Port connection, partial air is discharged from the gas outlet of the second speed governing valve 303, while having portion gas from third speed governing valve 305
Gas outlet discharges, and always unloading discharge quantity is that A adds B；It opens air gas circuit 30 and is flow minimum shelves.2) air mass flow is clicked again
Button 502, third two-position three way magnetic valve 304 power off, and air inlet is only connected to gas vent, so that without air from third tune
The gas outlet of fast valve 305 discharges, and only portion gas is discharged from the gas outlet of the second speed governing valve 303, and always unloading discharge quantity is B；I.e.
Adjusting air mass flow is middle-grade.3) air mass flow button 502, the power-off of the second two-position three way magnetic valve 302, air inlet are clicked again
It mouthful is only connected to gas vent, so that discharge without air from the gas outlet of the second speed governing valve 303, only portion gas is from third tune
The gas outlet of fast valve 305 discharges, and always unloading discharge quantity is A；Adjusting air mass flow is maximum.4) click again air mass flow by
Button 502, air pump 301 power off, i.e. closing air gas circuit 30.Loop back and forth like this, realize connection, cutting air gas circuit 30 and
Adjust air mass flow size in air gas circuit 30.
It should be pointed out that embodiment one and embodiment two are only to have included two kinds to adjust sky by air mass flow button 502
The specific operation process of gas flow in gas gas circuit 30, in practice can also other modes, such as after the step 3) of embodiment two,
When pressing air mass flow button 502 herein, the second two-position three way magnetic valve 302 and third two-position three way magnetic valve 304 are powered off, this
When flow-rate ratio step 3) in it is bigger, air mass flow can be set as to four class.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those skilled in the art,
Without departing from the inventive concept of the premise, several modifications and improvements can also be made, these also should be considered as guarantor of the invention
Range is protected, these all will not influence the effect and patent practicability that the present invention is implemented.The present invention omits the technology of description, shape
Shape, construction portion are well-known technique.
Claims (10)
1. a kind of double feeding pneumatic systems of endoscope-use, it is characterised in that: be equipped in the inside of cold light source device and provide air
The carbon dioxide gas circuit of air gas circuit and offer carbon dioxide, the air gas circuit and carbon dioxide gas circuit switch with gas respectively
Device is connected；The air gas circuit and carbon dioxide gas circuit are connect by gas switching device with gas output end, and gas is passed through
Switching device switching, delivery air or carbon dioxide.
2. a kind of double feeding pneumatic systems of endoscope-use according to claim 1, it is characterised in that: in the air gas circuit
On be provided with flow detector.
3. a kind of double feeding pneumatic systems of endoscope-use according to claim 1, it is characterised in that: in air gas circuit and two
Aqueous vapor bottle is respectively arranged in carbonoxide gas circuit；Or gas output end is connected with aqueous vapor bottle；Or aqueous vapor bottle has been independently arranged it.
4. a kind of double feeding pneumatic systems of endoscope-use according to claim 1, it is characterised in that: the carbon dioxide gas
Road is equipped with the first two-position three way magnetic valve, and the first two-position three way magnetic valve is communicated with the first check valve, the first check valve and gas
The connection of body output end；
The flow detector includes the flowmeter being located in air gas circuit；
Air pump is additionally provided in the air gas circuit, the gas outlet of air pump is communicated with the 4th speed governing valve, the 4th speed governing valve
Gas outlet is connected to the flowmeter, and the gas outlet of the flowmeter is communicated with second one-way valve, second one-way valve also with the gas
The connection of body output end.
5. a kind of double feeding pneumatic systems of endoscope-use described in one of -3 according to claim 1, it is characterised in that: provide dioxy
The outside of cold light source device is arranged in the feeder for changing carbon.
6. a kind of double feeding pneumatic systems of endoscope-use according to claim 4, it is characterised in that: described one or two three
Three-way electromagnetic valve is also communicated with the first speed governing valve being in communication with the outside, the gas outlet of the first two-position three way magnetic valve and first list
It is connected to the air inlet of valve, the gas vent of the first two-position three way magnetic valve is connected to the air inlet of the first speed governing valve.
7. a kind of double feeding pneumatic systems of endoscope-use according to claim 4, it is characterised in that: the air pump goes out
The second two-position three way magnetic valve is additionally provided between port and the 4th speed governing valve；The gas vent of second two-position three way magnetic valve and institute
State the air inlet connection of the 4th speed governing valve；The gas outlet of second two-position three way magnetic valve is communicated with second to be in communication with the outside and adjusts
Fast valve.
8. a kind of double feeding pneumatic systems of endoscope-use according to claim 7, it is characterised in that: the air gas circuit is also
Including the third two-position three way magnetic valve being located between the second two-position three way magnetic valve and the 4th speed governing valve, the second two-position three way electricity
The gas vent of magnet valve is connected to the air inlet of the third two-position three way magnetic valve, the gas vent of the third two-position three way magnetic valve with
The air inlet of 4th speed governing valve is connected to, and the gas outlet of the third two-position three way magnetic valve is communicated with the third speed regulation being in communication with the outside
Valve.
9. a kind of double feeding pneumatic systems of endoscope-use according to claim 4, it is characterised in that: the air gas circuit is also
Including pressure sensor, which is arranged close to the flowmeter.
10. a kind of double feeding pneumatic systems of endoscope-use according to any one of claim 6~9, it is characterised in that: institute
The gas outlet for stating the first speed governing valve, and/or the second speed governing valve, and/or third speed governing valve is located at the inside of cold light source device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910022065.9A CN109464114B (en) | 2019-01-10 | 2019-01-10 | Double-air-supply air path system for endoscope |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910022065.9A CN109464114B (en) | 2019-01-10 | 2019-01-10 | Double-air-supply air path system for endoscope |
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| CN109464114B CN109464114B (en) | 2023-06-30 |
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