CN208350823U - The ball valve blow device of elemental analyser solid sampler - Google Patents
The ball valve blow device of elemental analyser solid sampler Download PDFInfo
- Publication number
- CN208350823U CN208350823U CN201821157129.3U CN201821157129U CN208350823U CN 208350823 U CN208350823 U CN 208350823U CN 201821157129 U CN201821157129 U CN 201821157129U CN 208350823 U CN208350823 U CN 208350823U
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- China
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- ball valve
- gas circuit
- spool
- sample
- counterbore
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Abstract
The utility model provides a kind of ball valve blow device of elemental analyser solid sampler, ball valve including the upper end opening position of combustion tube is arranged in, the spool of the ball valve is spherical and has a counterbore, according to the counterbore it is opening up, define the spool respectively towards side and orientation directed downwardly and be in sample position, purge position and sample introduction position；The ball valve is communicated with purging gas circuit and emptying gas circuit, and the purging gas circuit can be connected when spool is in purge position with the counterbore, and the high pressure gas of the purging gas circuit can be discharged for the emptying gas circuit, and solenoid valve is equipped on air-discharging road.The utility model passes through the cooperation between the rotation of spool and the on-off of solenoid valve, it can guarantee that combustion tube and purging gas circuit are in isolation always, and combustion tube internal duct pressure oscillation is smaller during completing to purge function, achievees the purpose that influence reduction analytic process.
Description
Technical field
The utility model relates to a kind of elemental analyser solid sampler, in particular to elemental analyser solid sampler
Ball valve blow device.
Background technique
In elemental analyser (such as Dumars blood urea/nitrogen analyzer), the need of the analysis test to solid sample are usually had
It asks.
Critical component is sampling valve in solid sampler, and the structure type of sampling valve is varied, is had using multiple cylinders
The combination of reciprocating action the purpose of forming sample introduction chamber, reaching sample, purging, sample introduction；Also have using round ball valve cooperation electricity
Dynamic rotary part, achievees the purpose that fall sample, purging and sample introduction by ball in rotary valve (with through-hole).
Structure is complicated for the sampling valve of cylinder form, and sealing performance is poor, and the chamber of formation is generally all larger, needs to purge
Time is long, expends gas source and extends analysis time.
The sampling valve of ball valve form, fairly simple in form, rotational angle accurately controls, sealed reliable.But it is purged
Functionally there is certain defect, through-hole type ball valve is equivalent to internal duct when purging and is vented in ball valve position, at this time inner tube
Road pressure drastically reduces, it is to be purged finish, close ball valve after, the recoveries such as internal duct pressure, flow, detector normal time
It is very long, cause analysis time to lengthen significantly, and sample is constantly in height during waiting and eventually entering into this of cracking tube
Temperature state (200 DEG C or more), it is particularly disadvantageous for fusing point or boiling point (fluid sample) lower sample, it is most likely that melt in advance
Solution or gasification lead to the loss of sample size, so that test result generates biggish deviation.
Based on this, it is a kind of be able to maintain during sample introduction internal duct pressure it is constant while complete purging function dress
It sets most important.
Utility model content
The utility model provides a kind of ball valve blow device of elemental analyser solid sampler, its object is to:
1, the parameters big ups and downs such as channel interior pressure, flow velocity in sample introduction purge are solved, when detector being caused to restore
Between long problem.
2, shorten sample before sample introduction in high-temperature region residence time.
3, sample card sample problem as caused by the flow perturbation of external and internal pressure imbalance formation during sample introduction is avoided.
In order to achieve the above purposes, the technical solution adopted by the utility model is:
A kind of ball valve blow device of elemental analyser solid sampler, the upper end opening position including combustion tube is arranged in
Ball valve, it is characterised in that:
The spool of the ball valve is spherical and has a counterbore, according to the counterbore it is opening up, towards side and
Orientation directed downwardly defines the spool respectively and is in sample position, purge position and sample introduction position；
The ball valve is communicated with purging gas circuit and emptying gas circuit, and the purging gas circuit can be when spool be in purge position
It is connected with the counterbore, the high pressure gas of the purging gas circuit can be discharged for the emptying gas circuit, set on air-discharging road
There is solenoid valve.
The ball valve blow device of the elemental analyser solid sampler, in which: further include carrier gas gas circuit, the carrier gas
Gas circuit is connected to the spool downstream position of the ball valve.
The ball valve blow device of the elemental analyser solid sampler, in which: the purging gas circuit and carrier gas gas circuit
Upstream be connected to the same gas circuit entrance.
The ball valve blow device of the elemental analyser solid sampler, in which: it is described fall sample position, purge position with
Sample introduction position successively differs an angle of 90 degrees.
Utility model has the advantages that can guarantee sample during sample introduction (from sample, purging and sample introduction is fallen), equipment
Violent fluctuation does not occur for internal duct pressure, to substantially reduce the fluctuation due to channel interior parameter (pressure, flow velocity etc.)
Influence to detector.In preferred technical solution, purge gass are homologous with carrier gas, the pressure after completing purging, inside ball valve
Power and the pressure in combustion tube are substantially suitable, so will not generate transient flow during valve core rotation sample introduction and in ball valve
Sample generate disturbance, avoid air-flow by sample blow at ball valve mouth caused by card sample phenomenon.
Detailed description of the invention
Fig. 1 is the structure principle chart of ball valve blow device provided by the utility model；
Fig. 2 is the structural schematic diagram of another angle of ball valve blow device provided by the utility model；
Fig. 3 A, Fig. 3 B, Fig. 3 C are the schematic diagram step by step of ball valve blowing method provided by the utility model respectively.
Description of symbols: gas circuit entrance 1；Purge gas circuit 2；Solid sample 3；Ball valve 4；Solenoid valve 5；Empty gas circuit 6；Combustion
Burn pipe 7；Carrier gas gas circuit 8.
Specific embodiment
As shown in Figure 1 and Figure 2, the utility model provides a kind of ball valve blow device of elemental analyser solid sampler, packet
Include the ball valve 4 that the upper end opening position of combustion tube 7 is set, in which:
The spool of the ball valve 4 is spherical and has a counterbore, according to the counterbore it is opening up, towards side and
Orientation directed downwardly defines the spool respectively and is in sample position, purge position and sample introduction position；
Gas circuit entrance 1 divides for two-way, is all the way purging gas circuit 2, and another way is carrier gas gas circuit 8, and the purging gas circuit 2 can
Be connected when spool is in purge position with the counterbore, the ball valve 4 be also connected with for by it is described purging gas circuit 2 height
The emptying gas circuit 6 of body of calming the anger discharge is equipped with solenoid valve 5 in emptying gas circuit 6, and the carrier gas gas circuit 8 is connected to the ball valve 4
Spool downstream position.
As shown in figs. 3 a-3 c, the utility model provides a kind of 4 side of purging of ball valve of elemental analyser solid sampler
Method includes the following steps:
Fall sample: as shown in Figure 3A, the spool is in sample position, and solid sample 3 is enabled smoothly to fall to spool
Counterbore in, at this point, the solenoid valve 5 is closed, 2 pressure drags of the purging gas circuit are larger, and gas source is by carrier gas gas circuit 8 into combustion tube
7 and subsequent pipeline in, form the carrier gas of continuous-stable；
Purging: 90 degree of the valve core rotation, the spool are in purge position as shown in Figure 3B, at this point, first will be described
Solenoid valve 5 is opened, and since the pressure drag of emptying gas circuit 6 is smaller, gas source is entered the counterbore of spool by purging gas circuit 2, to counterbore and
Spool each section is cleaned, and is then discharged by emptying gas circuit 6, after one section of duration, closes the solenoid valve 5, makes to empty gas circuit 6
Pressure drag increases, and gas source is entered in combustion tube 7 and subsequent pipeline by carrier gas gas circuit 8, forms the carrier gas of continuous-stable；
Sample introduction: the spool continues to rotate 90 degree, and the spool is in sample introduction position as shown in Figure 3 C, at this point, solid
Sample 3 is fallen under the effect of gravity in the combustion tube 7, completes the final sample introduction of solid sample 3.
In whole process, by the cooperation between the rotation of spool and the on-off of solenoid valve 5, can guarantee combustion tube 7 with
Purge gas circuit 2 always be in isolation, and complete purge function during 7 internal duct pressure oscillation of combustion tube compared with
It is small, achieve the purpose that influence reduction analytic process.
The most significant effect of the utility model be can guarantee sample during sample introduction (from sample, purging and sample introduction is fallen),
Violent fluctuation does not occur for equipment internal duct pressure, to substantially reduce due to channel interior parameter (pressure, flow velocity etc.)
Fluctuate the influence to detector；Simultaneously because purge gass are homologous with carrier gas, and after completing purging, pressure and combustion inside ball valve 4
Burn pipe 7 in pressure it is substantially suitable, so transient flow will not be generated during valve core rotation sample introduction and to the sample in ball valve 4
Product generate disturbance, avoid air-flow that sample is blown to generated card sample phenomenon at 4 mouthfuls of ball valve.
It is described above to be merely exemplary for the utility model, and not restrictive, those of ordinary skill in the art
Understand, without departing from the spirit and scope defined by the claims, can many modifications may be made, variation or it is equivalent, but
It falls within the protection scope of the utility model.
Claims (4)
1. a kind of ball valve blow device of elemental analyser solid sampler, the upper end opening position including combustion tube is arranged in
Ball valve, it is characterised in that:
The spool of the ball valve is spherical and has a counterbore, according to the opening up, towards side and downward of the counterbore
Orientation define the spool respectively and be in sample position, purge position and sample introduction position；
The ball valve is communicated with purging gas circuit and emptying gas circuit, and the purging gas circuit can be when spool be in purge position and institute
It states counterbore to be connected, the high pressure gas of the purging gas circuit can be discharged for the emptying gas circuit, and electricity is equipped on air-discharging road
Magnet valve.
2. the ball valve blow device of elemental analyser solid sampler according to claim 1, it is characterised in that: further include
Carrier gas gas circuit, the carrier gas gas circuit are connected to the spool downstream position of the ball valve.
3. the ball valve blow device of elemental analyser solid sampler according to claim 2, it is characterised in that: described to blow
Scavenging road and the upstream of carrier gas gas circuit are connected to the same gas circuit entrance.
4. the ball valve blow device of elemental analyser solid sampler according to claim 1, it is characterised in that: it is described fall
Sample position, purge position successively differ an angle of 90 degrees with sample introduction position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821157129.3U CN208350823U (en) | 2018-07-20 | 2018-07-20 | The ball valve blow device of elemental analyser solid sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821157129.3U CN208350823U (en) | 2018-07-20 | 2018-07-20 | The ball valve blow device of elemental analyser solid sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208350823U true CN208350823U (en) | 2019-01-08 |
Family
ID=64905321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821157129.3U Active CN208350823U (en) | 2018-07-20 | 2018-07-20 | The ball valve blow device of elemental analyser solid sampler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208350823U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212248A (en) * | 2018-07-20 | 2019-01-15 | 北京诺德泰科仪器仪表有限公司 | The ball valve blow device and method of elemental analyser solid sampler |
| CN111336018A (en) * | 2020-03-31 | 2020-06-26 | 中国航发动力股份有限公司 | Electromagnetic valve switch of slide valve structure for purging fuel oil |
-
2018
- 2018-07-20 CN CN201821157129.3U patent/CN208350823U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212248A (en) * | 2018-07-20 | 2019-01-15 | 北京诺德泰科仪器仪表有限公司 | The ball valve blow device and method of elemental analyser solid sampler |
| CN109212248B (en) * | 2018-07-20 | 2024-02-13 | 北京诺德泰科仪器仪表有限公司 | Ball valve purging device and method for solid sample injector of elemental analyzer |
| CN111336018A (en) * | 2020-03-31 | 2020-06-26 | 中国航发动力股份有限公司 | Electromagnetic valve switch of slide valve structure for purging fuel oil |
| CN111336018B (en) * | 2020-03-31 | 2021-06-08 | 中国航发动力股份有限公司 | Electromagnetic valve switch of slide valve structure for purging fuel oil |
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