CN207621675U - A kind of more changing device of the gas cylinder with blowing function - Google Patents
A kind of more changing device of the gas cylinder with blowing function Download PDFInfo
- Publication number
- CN207621675U CN207621675U CN201721814425.1U CN201721814425U CN207621675U CN 207621675 U CN207621675 U CN 207621675U CN 201721814425 U CN201721814425 U CN 201721814425U CN 207621675 U CN207621675 U CN 207621675U
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- gas
- conveyance conduit
- gas cylinder
- aspiration pump
- air
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Abstract
The utility model provides a kind of more changing device of the gas cylinder with blowing function, including exhaust gear, conveyance conduit and the gas cylinder being connected to by conveyance conduit, the air inlet of conveyance conduit is connected to gas cylinder, exhaust gear is located at the air inlet of conveyance conduit and exhaust gear includes air accumulator, aspiration pump, cross gas box, aspiration pump fixation is located on conveyance conduit, gas box cover is crossed to be located on the inner wall of the conveyance conduit, this is crossed gas box and sets there are one air admission hole, several unidirectional ventholes and several ventholes, the air inlet of aspiration pump is connected to air accumulator and the gas outlet of aspiration pump is connected to the air admission hole for crossing gas box, several unidirectional ventholes were located at outside gas box and unidirectional venthole is sprayed towards gas cylinder, several ventholes penetrate through the setting of gas box.The utility model is remained by the air inlet of conveyance conduit by exhaust gear and is hovered by carrier gas, and then prevents outside air from entering in conveyance conduit, is realized and is kept the carrier gas in conveyance conduit pure.
Description
Technical field
The utility model belongs to testing equipment field more particularly to a kind of more changing device of the gas cylinder with blowing function.
Background technology
In numerous detection devices, there are the equipment such as such as gas chromatograph to need using pure inert gas as load
Gas, such as nitrogen, helium etc., but gas cylinder bearing capacity is limited, new gas cylinder is needed replacing after the gas in gas cylinder is used up, more
When changing, the outlet that the conveyance conduit of detection device extracts conveyance conduit during original gas cylinder is exposed to outside air, is easy mixed
Enter outside air, the load environment inside detection device is impacted, to influence the accuracy of detection of detection device.
In view of the above-mentioned problems, the applicant furthers investigate in view of the above-mentioned drawbacks in the prior art, there is this case generation then.
Invention content
The purpose of this utility model is to provide a kind of more changing devices of the gas cylinder with blowing function, keep the interior of detection device
Portion's environment is pure, to improve the accuracy of detection of detection device.
The utility model is realized in this way：
There is provided a kind of more changing device of the gas cylinder with blowing function, wherein including exhaust gear, conveyance conduit and by defeated
The gas cylinder for sending pipeline to be connected to, the air inlet of the conveyance conduit is connected to gas cylinder, the exhaust gear be located at conveyance conduit into
Gas port and exhaust gear include air accumulator, aspiration pump, cross gas box, and the aspiration pump fixation is located on conveyance conduit, the mistake
Gas box cover is located on the inner wall of the conveyance conduit, this is crossed gas box and sets that there are one air admission hole, several unidirectional ventholes and several
The air inlet of a venthole, the aspiration pump is connected to air accumulator and the gas outlet of aspiration pump connects with the air admission hole for crossing gas box
It is logical, several described unidirectional ventholes be located at it is described cross outside gas box and unidirectional venthole is sprayed towards gas cylinder, it is described several
Venthole crosses the setting of gas box through described.
Further, carrier gas is stored in the air accumulator.
After adopting the above technical scheme, the utility model is related to a kind of more changing device of the gas cylinder with blowing function, with the prior art
It compares, advantageous effect is, exhaust gear is arranged in the gas outlet of conveyance conduit in the utility model, when detection device normal operation,
Aspiration pump is closed, the carrier gas being stored in gas cylinder into conveyance conduit provided gas after passing through gas box from venthole for detection device
Source, when needing replacing new gas cylinder, open aspiration pump, aspiration pump by air accumulator carrier gas extraction and from unidirectional venthole to
Gas cylinder sprays so that the gas outlet of conveyance conduit constantly sprays carrier gas outward, and then prevents outside air from entering conveyance conduit
It is interior, it realizes and keeps the carrier gas in conveyance conduit pure.
Description of the drawings
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the structural schematic diagram of the extraction sector of the utility model.
Reference sign：
1, exhaust gear, 11, air accumulator, 12, aspiration pump, 13, cross gas box, 131, unidirectional venthole, 132, venthole, 2,
Conveyance conduit, 3, gas cylinder.
Specific implementation mode
For the technology contents of the utility model, construction feature, the objects and the effects are described in detail, below in conjunction with implementation
Mode simultaneously coordinates attached drawing to be explained in detail.
Shown in reference picture 1, Fig. 2, the utility model provides a kind of more changing device of the gas cylinder with blowing function, wherein including exhaust
Mechanism 1, conveyance conduit 2 and the gas cylinder 3 being connected to by conveyance conduit 2.Gas cylinder 3 is built-in lazy just like hydrogen, helium or nitrogen etc.
Property gas, inert gas pass through conveyance conduit 2 enter detection device in.
The air inlet of the conveyance conduit 2 is connected to gas cylinder 3, and carrier gas is discharged in gas cylinder 3 so that carrier gas enters conveyance conduit 2.
The exhaust gear 1 is located at the air inlet of conveyance conduit 2 and exhaust gear 1 includes air accumulator 11, aspiration pump 12, crosses gas box
13, the air accumulator 11 is interior to store carrier gas, and consistent with the type carrier gases that gas cylinder 3 stores.The fixation of the aspiration pump 12 is located at
On conveyance conduit 2,13 lid of gas box of crossing is located on the inner wall of the conveyance conduit 2, this cross gas box 13 set there are one air admission hole,
Several unidirectional ventholes 131 and several ventholes 132, the air inlet of the aspiration pump 12 are connected to and take out with air accumulator 11
The gas outlet of air pump 12 is connected to the air admission hole of gas box 13 excessively, several described unidirectional ventholes 131 are located at the gas box 13 excessively
External and unidirectional venthole 131 is sprayed towards gas cylinder 3, several described ventholes 132 are arranged through the gas box 13 of crossing.
Exhaust gear 1 is arranged in the gas outlet of conveyance conduit 2 in the utility model, when detection device normal operation, closes pumping
Pump 12, the carrier gas being stored in gas cylinder 3 provided for sample to be tested after passing through gas box 13 from venthole 132 into conveyance conduit 2
Air source.After the carrier gas of gas cylinder 3 is used up, aspiration pump 12 is opened, aspiration pump 12 is by the carrier gas extraction in air accumulator 11 and from unidirectional
Venthole 131 is sprayed to gas cylinder 3 so that the gas outlet of conveyance conduit 2 constantly sprays carrier gas outward, allows the outlet of conveyance conduit 2
Mouth is hovered by carrier gas always, and the injection direction enters the direction of conveyance conduit 2 on the contrary, preventing the external world in turn with outside air
Air enters in conveyance conduit 2, realizes and keeps the carrier gas in conveyance conduit 2 pure.
The above description is only the embodiments of the present invention, is not intended to limit the scope of patent protection of the utility model,
Equivalent structure or equivalent flow shift made by using the description of the utility model and the drawings, is directly or indirectly transported
Used in other related technical areas, it is equally included in the patent within the scope of the utility model.
Claims (2)
1. a kind of more changing device of the gas cylinder with blowing function, which is characterized in that including exhaust gear, conveyance conduit and by defeated
The gas cylinder for sending pipeline to be connected to, the air inlet of the conveyance conduit is connected to gas cylinder, the exhaust gear be located at conveyance conduit into
Gas port and exhaust gear include air accumulator, aspiration pump, cross gas box, and the aspiration pump fixation is located on conveyance conduit, the mistake
Gas box cover is located on the inner wall of the conveyance conduit, this is crossed gas box and sets that there are one air admission hole, several unidirectional ventholes and several
The air inlet of a venthole, the aspiration pump is connected to air accumulator and the gas outlet of aspiration pump connects with the air admission hole for crossing gas box
It is logical, several described unidirectional ventholes be located at it is described cross outside gas box and unidirectional venthole is sprayed towards gas cylinder, it is described several
Venthole crosses the setting of gas box through described.
2. a kind of more changing device of the gas cylinder with blowing function according to claim 1, which is characterized in that in the air accumulator
Store carrier gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721814425.1U CN207621675U (en) | 2017-12-22 | 2017-12-22 | A kind of more changing device of the gas cylinder with blowing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721814425.1U CN207621675U (en) | 2017-12-22 | 2017-12-22 | A kind of more changing device of the gas cylinder with blowing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207621675U true CN207621675U (en) | 2018-07-17 |
Family
ID=62820542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721814425.1U Active CN207621675U (en) | 2017-12-22 | 2017-12-22 | A kind of more changing device of the gas cylinder with blowing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207621675U (en) |
-
2017
- 2017-12-22 CN CN201721814425.1U patent/CN207621675U/en active Active
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