CN1226594C - Oxygen flowmeter - Google Patents
Oxygen flowmeter Download PDFInfo
- Publication number
- CN1226594C CN1226594C CN 03157697 CN03157697A CN1226594C CN 1226594 C CN1226594 C CN 1226594C CN 03157697 CN03157697 CN 03157697 CN 03157697 A CN03157697 A CN 03157697A CN 1226594 C CN1226594 C CN 1226594C
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- CN
- China
- Prior art keywords
- oxygen
- magnet steel
- rotor
- watchcase
- detecting device
- Prior art date
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- Expired - Fee Related
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Abstract
The present invention relates to an oxygen flowmeter which is provided with a flowmeter shell. An oxygen inlet connecting pipe and an oxygen outlet connecting pipe are arranged on the flowmeter shell. A rotor detector which is composed of wing wheels is arranged between the oxygen inlet connecting pipe and the oxygen outlet connecting pipe and is connected with a mechanical counter arranged on the flowmeter shell by a magnetic transmission mechanism and a gear decelerating mechanism. The front of the oxygen inlet of the rotor detector is connected with a magnetic constant pressure compensating mechanism in series. An oxygen outlet end is connected with a shift flow detector in series. The present invention belongs to a mechanical structure type counting displaying device manufactured by using a gas dynamics principle, does not need an electric source and has the characteristics of complete function, high meterage precision, convenient use, direct display, small size, reasonable and compact structure, etc.
Description
Technical field
What the present invention relates to is a kind of device of the measurement of gas flow, and especially a kind of device that can carry out the low discharge oxygen stoichiometry is applicable to the patient respiration oxygen stoichiometry of hospital etc.
Background technology
Patient in the hospital needs respiratory oxygen now, mostly adopt filling medical oxygen in welding bottle, by on oxygen valve, connecting behind the instruments such as a tensimeter and humidifying cup with picking out direct grafting muzzle use or with oxygen face mask patients incoming call from mouth.Generally in use, do not have special oxygen flow metering device, only rely on the use amount of its oxygen uptake of Time Calculation of patients accepting oxygen inhalation, thereby calculate patient's oxygen usage charges on this basis, the at present this metering method of generally using is very inaccurate.Along with the Medical Devices of hospital constantly renew, more existing big hospitals are provided with the concentrated oxygen supply respiratory system specially in the ward, adopt valve controlling flow to and flow, but their use still exists the accurate measurement problem after patient uses oxygen.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned existence, and a kind of oxygen flowmete that specially the hospital patient respiratory oxygen is accurately measured is provided, it has a watchcase, watchcase is provided with oxygen inlet and takes over and discharge connection, be provided with the rotor detecting device of being made up of wing wheel between two adapters, this rotor detecting device links to each other by the mechanical counter that a magnetic transmission mechanism and gear reduction and are installed on the watchcase.
Transmission magnet steel, rotor magnet steel and transmission magnet steel arranged adjacent that described magnetic transmission mechanism includes a rotor magnet steel that links to each other with wing wheel in the rotor detecting device and links to each other with the transmission gear or the axle of gear reduction.
The oxygen of described rotor detecting device inserts the place ahead and also is serially connected with a magnetic constant voltage compensation mechanism, also is serially connected with a displacement pneumatic detector and pick out end at oxygen.
Described magnetic constant voltage compensation mechanism, include the overcoat that an at least one end opening, outer wall offer the gas outlet, be placed with a moveable magnet steel in it, this activity magnet steel outside is connected with an O-ring seal, and in the openend fixed in position of overcoat the fixedly magnet steel that through hole is arranged in the middle of is arranged.
Described displacement pneumatic detector includes an end and has the inner cone overcoat that air intake opening, outer wall offer the gas outlet, be incorporated with movable awl in it, the activity displacement of this activity awl is directly proportional with the oxygen gas flow rate that enters, one end of movable awl is connected with push rod, and this push rod links to each other with a sector gear, and can drive transmission gear and the pointer that is meshed with sector gear, to indicate its flow velocity size
The physical construction formula that the invention belongs to a kind of applied pneumatics principle and make counting device shown, it does not need power supply, have multiple functional, the measuring accuracy height, easy to use, intuitive display, volume is little, characteristics such as rational in infrastructure, compactness.
Description of drawings
Fig. 1 is a structural principle synoptic diagram of the present invention.
Fig. 2 is a monnolithic case structural representation of the present invention.
Fig. 3 is the structural representation of magnetic constant voltage compensation mechanism of the present invention.
Fig. 4 is the structural representation of displacement pneumatic detector of the present invention.
Fig. 5 is the structural representation of magnetic transmission mechanism of the present invention.
Embodiment
The present invention will be described in detail below in conjunction with accompanying drawing: Fig. 1, and----is shown in Figure 2, and the present invention has a watchcase 1, and watchcase is provided with oxygen inlet adapter 2 and discharge connection 3.Back in oxygen inlet adapter 2 is provided with magnetic constant voltage compensation mechanism 4, sees shown in Figure 3.This magnetic constant voltage compensation mechanism 4 includes the overcoat 42 that end opening, outer wall one by one offer gas outlet 41, is placed with a moveable magnet steel 43 in the overcoat 42, and its outside is connected with an O-ring seal 44; And the fixedly magnet steel 46 that through hole 45 is arranged in the middle of being arranged in the outside of O-ring seal 44, the openend fixed in position of overcoat 42, Oxygen Flow inserts from entrance sleeve 2; By the fixing through hole 45 of magnet steel 46, push movable magnet steel 43 and move, 41 flow out from the gas outlet, because magnetic action, can discharge impact air-flow at interval under the situation of very little Oxygen Flow, the wing wheel that makes the back link to each other can obtain enough initial kinetic energy, to improve its measuring accuracy.Flow metering of the present invention mainly relies on a rotor detecting device 5 of being made up of wing wheel 51, Oxygen Flow is from a side inflow of rotor detecting device, flow out again after driving wing wheel 51 rotations, on the pipeline of its outflow, be serially connected with a displacement pneumatic detector 6, this displacement pneumatic detector 6 includes an end and has air intake opening, outer wall offers the inner cone overcoat 61 of gas outlet, be incorporated with movable awl 62 in it, the activity displacement of this activity awl is directly proportional with the oxygen gas flow rate that enters, one end of movable awl 62 is connected with push rod 63, and this push rod links to each other with a sector gear 64, and can drive transmission gear 65 and the pointer 66 that is meshed with sector gear, to indicate its flow velocity size, see shown in Figure 4.Described sector gear 64 can be formed an indicating gauge with transmission gear 65 and pointer 66 etc. and be installed on the watchcase 1, and it has changed flow velocity indication form in the past, makes structure compact more, has improved the overall appearance degree.Be connected to a switch needle-valve 7 and humidifying cup 8 in the back of displacement pneumatic detector 6 and pick out patients oxygen uptake usefulness.
The present invention is connected with a magnetic transmission mechanism 9 on rotor detecting device 5, and links to each other with mechanical counter 11 on being installed in watchcase by gear reduction 10.On mechanical counter 11, also be provided with back zero lock 12, make mechanical counter 11 can be set at zero, be convenient to the counting and the demonstration of flow.
Described magnetic transmission mechanism 9 include one with wing wheel 51 rotor magnet steel 13 that links to each other and the transmission magnet steel 15 that links to each other with the transmission gear 14 of gear reduction 10 in the rotor detecting device, rotor magnet steel 13 and transmission magnet steel 15 corresponding arranged adjacent are seen shown in Figure 5.
Claims (5)
1, a kind of oxygen flowmete, it has a watchcase, watchcase is provided with oxygen inlet and takes over and discharge connection, it is characterized in that oxygen inlet in the watchcase (1) is taken between (2) and the discharge connection (3) is provided with the rotor detecting device of being made up of wing wheel (51) (5), and this rotor detecting device (5) links to each other by the mechanical counter (11) that a magnetic transmission mechanism (9) and gear reduction (10) and are installed on the watchcase (1).
2, oxygen flowmete according to claim 1, it is characterized in that described magnetic transmission mechanism (9) include one with rotor detecting device (5) in the rotor magnet steel (13) that links to each other of wing wheel (51) and with transmission gear (14) or spool the transmission magnet steel (15), rotor magnet steel (13) and transmission magnet steel (15) arranged adjacent that link to each other of gear reduction (10).
3, oxygen flowmete according to claim 1 and 2 is characterized in that oxygen access the place ahead of described rotor detecting device (5) also is serially connected with a magnetic constant voltage compensation mechanism (4), is serially connected with a displacement pneumatic detector (6) and pick out end at oxygen.
4, oxygen flowmete according to claim 3, it is characterized in that described magnetic constant voltage compensation mechanism (4) includes the overcoat (42) that an at least one end opening, outer wall offer the gas outlet, be placed with a moveable magnet steel (43) in it, this activity magnet steel (43) outside is connected with an O-ring seal (44), and in the openend fixed in position of overcoat (42) the fixedly magnet steel (46) that through hole (45) is arranged in the middle of is arranged.
5, oxygen flowmete according to claim 3, it is characterized in that described displacement pneumatic detector (6) includes an end and has the inner cone overcoat (61) that air intake opening, outer wall offer the gas outlet, be incorporated with movable awl (62) in it, the activity displacement of this activity awl is directly proportional with the oxygen gas flow rate that enters, one end of movable awl (62) is connected with push rod (63), and this push rod links to each other with a sector gear (64), and drives pointer (66) indication flow velocity by the transmission gear (65) that is engaged with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03157697 CN1226594C (en) | 2003-09-06 | 2003-09-06 | Oxygen flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03157697 CN1226594C (en) | 2003-09-06 | 2003-09-06 | Oxygen flowmeter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1490599A CN1490599A (en) | 2004-04-21 |
| CN1226594C true CN1226594C (en) | 2005-11-09 |
Family
ID=34157022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03157697 Expired - Fee Related CN1226594C (en) | 2003-09-06 | 2003-09-06 | Oxygen flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1226594C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100548407C (en) * | 2005-07-22 | 2009-10-14 | 崇仁科技事业股份有限公司 | Air flow change indicator |
| CN105737908B (en) * | 2016-05-10 | 2019-02-15 | 南通市第一人民医院 | A kind of laser displacement oxygen flow sensor |
| CN111529883B (en) * | 2020-05-07 | 2021-03-19 | 吉林大学 | Oxygen therapy device for nursing capable of conveniently wetting lips of patient |
-
2003
- 2003-09-06 CN CN 03157697 patent/CN1226594C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1490599A (en) | 2004-04-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20040421 Assignee: Hangzhou Lihua Science & Technology Co., Ltd. Assignor: Li Zheng Contract record no.: 2014330000038 Denomination of invention: Oxygen flowmeter Granted publication date: 20051109 License type: Exclusive License Record date: 20140314 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051109 Termination date: 20140906 |
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| EXPY | Termination of patent right or utility model |