CN201135892Y - Lab gas collecting and metering device - Google Patents
Lab gas collecting and metering device Download PDFInfo
- Publication number
- CN201135892Y CN201135892Y CNU2007203030146U CN200720303014U CN201135892Y CN 201135892 Y CN201135892 Y CN 201135892Y CN U2007203030146 U CNU2007203030146 U CN U2007203030146U CN 200720303014 U CN200720303014 U CN 200720303014U CN 201135892 Y CN201135892 Y CN 201135892Y
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- CN
- China
- Prior art keywords
- gas
- gas collection
- gas collecting
- metering device
- scale
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Abstract
The utility model discloses a laboratory gas collecting and metering device. The laboratory gas collecting and metering device comprises a gas collecting and metering tube with scale marks, a spherical water storage groove, a bent pipe and a base seat, wherein the lower end of the gas collecting and metering tube with the scale marks is mutually connected with one end of the spherical water storage groove through the bent pipe, the base seat is arranged under the bent pipe, and the other end of the spherical water storage groove is opened and is communicated with the atmosphere. By adopting the laboratory gas collecting and metering device, the gas collecting and metering tube with the scale marks can be filled with the water and be sealed through the liquid of the spherical water storage groove, the required collecting and metering gas is admitted in the gas collecting and metering tube with the scale marks through the spherical water storage groove and the bent pipe, and the state that the volume of the draining water equal to the volume of the gas is utilized, the gas volume can be read through the scale marks on the gas collecting and metering tube. A small quantity of (0 to 25 ml) gas which is insoluble in water can be measured. The laboratory gas collecting and metering device has the advantages that the structure is simple, and the operation is convenient and accurate.
Description
Technical field
The utility model relates to the gas dosing instrument, relates in particular to a kind of laboratory gas collection metering device.
Background technology
In the chemistry of many generation gases, biological respinse, usually to collect metering to the gas that is produced.Method commonly used has pressure differential method, drainage, syringe collecting method etc.The interior pressure reduction of closed container measured the gas of generation before and after pressure differential method utilized aerogenesis, and is bigger to the error in dipping of a small amount of gas.Drainage utilizes the water-fast character of gas, measures the gas of generation by the water yield that is replaced by gas, is applicable to the metering of a small amount of gas.Move behind the pressure pushing syringe piston that the syringe collecting method utilizes gas to produce, by the metering of the scale on syringe gas owing to have certain resistance between syringe and the piston, when gas production hour, error in dipping is bigger.
Summary of the invention
The utility model provides a kind of convenient, laboratory gas collection metering device accurately.
Laboratory gas collection metering device comprises band scale gas collection hopper, spherical aqua storage tank, bend pipe, base, band scale gas collection hopper lower end is connected by bend pipe with spherical aqua storage tank one end, the bend pipe below is provided with base, and the spherical aqua storage tank other end is uncovered, communicates with atmosphere.
Described gas collection hopper upper end closed, the scale numerical value on the gas collection hopper increase from top to bottom gradually.The scale numerical value of the gas collection hopper of band scale is 0～25ml, and the scale minimum rate of accumulation is higher than the highest liquid level line of aqua storage tank.
The utility model will be filled with water and by spherical aqua storage tank fluid-tight with the gas collection hopper of scale, the gas of needs being collected metering imports in the gas collection hopper of band scale through spherical aqua storage tank and bend pipe, the volume that utilization arranges water equals the volume of gas, and gas volume can be read by the scale on the gas collection hopper.Can measure a small amount of (0～25ml) water-fast gas.The utility model is simple in structure, and is easy to use, accurate.
Description of drawings
Accompanying drawing is the structural representation of gas collection metering device; Among the figure: gas collection hopper 1, spherical aqua storage tank 2, bend pipe 3, the base 4 of band scale.
The specific embodiment
As shown in drawings, laboratory gas collection metering device comprises band scale gas collection hopper 1, spherical aqua storage tank 2, bend pipe 3, base 4, band scale gas collection hopper 1 lower end is connected by bend pipe 3 with spherical aqua storage tank 2 one ends, bend pipe 3 belows are provided with base 4, spherical aqua storage tank 4) other end is uncovered, communicates with atmosphere.
Described gas collection hopper 1 upper end closed, the scale numerical value on the gas collection hopper 1 increase from top to bottom gradually.The scale numerical value of the gas collection hopper 1 of band scale is 0～25ml, and the scale minimum rate of accumulation is higher than the highest liquid level line of aqua storage tank, the influence of avoiding hydraulic pressure to bring.
During work, earlier water is filled the elliposoidal tank, the inclination gas collection metering device utilizes bridge piece that water is transferred in the gas collection hopper of band scale, treat that gas collection hopper with scale all is full of by water after, recover gas collection metering device; The gas that will need then to collect metering imports in the gas collection hopper of band scale through spherical aqua storage tank and bend pipe.Because the volume of water that water-fast gas arranges equals the volume of gas itself.Therefore, gas volume can be read by the scale on the gas collection hopper.The utility model can measure a small amount of water-fast gas of 0～25ml.
Claims (3)
1. laboratory gas collection metering device, it is characterized in that comprising band scale gas collection hopper (1), spherical aqua storage tank (2), bend pipe (3), base (4), band scale gas collection hopper (1) lower end is connected by bend pipe (3) with spherical aqua storage tank (2) one ends, spherical aqua storage tank (4) other end is uncovered, communicate with atmosphere, bend pipe (3) below is provided with base (4).
2. a kind of laboratory gas collection metering device according to claim 1 is characterized in that described gas collection hopper (1) upper end closed, and the scale numerical value on the gas collection hopper (1) increases from top to bottom gradually.
3. a kind of laboratory gas collection metering device according to claim 1 and 2 is characterized in that the scale numerical value of the gas collection hopper (1) of described band scale is 0～25ml, and the scale minimum rate of accumulation is higher than the highest liquid level line of aqua storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203030146U CN201135892Y (en) | 2007-12-05 | 2007-12-05 | Lab gas collecting and metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203030146U CN201135892Y (en) | 2007-12-05 | 2007-12-05 | Lab gas collecting and metering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201135892Y true CN201135892Y (en) | 2008-10-22 |
Family
ID=40036580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007203030146U Expired - Fee Related CN201135892Y (en) | 2007-12-05 | 2007-12-05 | Lab gas collecting and metering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201135892Y (en) |
-
2007
- 2007-12-05 CN CNU2007203030146U patent/CN201135892Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081022 Termination date: 20101205 |