CN108008050B - Membrane desolventizing device for heavy metal isotope measurement and tail gas emission assembly thereof - Google Patents
Membrane desolventizing device for heavy metal isotope measurement and tail gas emission assembly thereof Download PDFInfo
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- CN108008050B CN108008050B CN201810095857.4A CN201810095857A CN108008050B CN 108008050 B CN108008050 B CN 108008050B CN 201810095857 A CN201810095857 A CN 201810095857A CN 108008050 B CN108008050 B CN 108008050B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/62—Detectors specially adapted therefor
- G01N30/72—Mass spectrometers
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Abstract
The invention discloses a tail gas emission component of a film desolventizing device for heavy metal isotope measurement, which comprises a liquid seal barrel cover plate, an adjusting turntable which can be rotatably arranged on the liquid seal barrel cover plate around the axis of the liquid seal barrel cover plate, and a gas guide pipe for emitting tail gas; the liquid seal barrel cover plate is used for being arranged on the liquid seal barrel; the air duct passes through the cover plate of the liquid sealing barrel and is used for extending into the liquid sealing barrel; the air duct is propped against the peripheral surface of the adjusting turntable; the adjusting turntable can drive the air duct to ascend or descend through friction force when rotating around the axis of the adjusting turntable, and keep the air duct static through friction force when static. The tail gas emission component changes the tail gas from a pneumatic emission environment into hydraulic pressure, so that the back pressure of the membrane desolventizing device is more stable, the signal output by the mass spectrum is ensured to be more stable, the sensitivity is higher, and the measurement accuracy is improved. The invention also provides a film desolventizing device for heavy metal isotope measurement, which is applied to the tail gas emission component, ensures stable back pressure, ensures the intensity and stability of mass spectrum output signals and improves measurement accuracy.
Description
Technical Field
The invention relates to the technical field of mechanical industry, in particular to a tail gas emission component of a heavy metal isotope measurement membrane desolventizing device, and further relates to the heavy metal isotope measurement membrane desolventizing device.
Background
After the film desolventizing device for heavy metal isotope measurement is connected with a mass spectrum, water and acid medium in sample aerosol can be effectively removed, and the sample injection concentration is improved, so that the signal sensitivity is improved.
At present, a tail gas discharge pipe of a membrane desolventizing device for heavy metal isotope measurement is connected with an empty barrel, and when the gas pressure in the empty barrel is increased, redundant gas is discharged into the atmosphere through another gas outlet, so that the back pressure of the membrane desolventizing device is increased to keep the stability of a mass spectrum output signal.
However, the back pressure of the membrane desolventizing device is changed due to the influence of various conditions such as ambient air pressure, air flow rate, indoor temperature and the like in the exhaust emission process, so that the stability of a mass spectrum output signal is directly influenced.
Therefore, how to avoid the exhaust from affecting the back pressure of the membrane desolventizing device for heavy metal isotope measurement and improve the stability of the mass spectrum output signal is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the invention provides a tail gas emission component of a membrane desolventizing device for heavy metal isotope measurement, which changes the environment of tail gas emission from air pressure to hydraulic pressure, so that back pressure is more stable, thereby ensuring that signals output by mass spectrum are more stable, having higher sensitivity and being capable of improving measurement accuracy. The invention also provides a membrane desolventizing device for heavy metal isotope measurement, which is applied to the tail gas emission component, has stable back pressure, can ensure the intensity and stability of mass spectrum output signals and improves the measurement accuracy.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a tail gas emission assembly of a membrane desolventizing device for heavy metal isotope measurement, comprising:
the liquid seal barrel cover plate is used for being placed on the liquid seal barrel;
the adjusting turntable can be rotatably arranged on the liquid seal barrel cover plate around the axis of the adjusting turntable;
the air duct is used for discharging tail gas; the air duct passes through the cover plate of the liquid sealing barrel and is used for extending into the liquid sealing barrel; the air duct is propped against the outer peripheral surface of the adjusting turntable;
the adjusting turntable can drive the air duct to ascend or descend through friction force in the process of rotating around the axis of the adjusting turntable, and the air duct is kept static through friction force when the adjusting turntable is static.
Preferably, in the exhaust emission assembly, a bracket is fixed on the cover plate of the liquid seal barrel, and the adjusting turntable can be rotatably arranged on the bracket around the axis of the adjusting turntable.
Preferably, in the exhaust emission assembly, an anti-slip washer is arranged on the outer circumferential surface of the adjusting turntable, and the air duct abuts against the outer circumferential surface of the adjusting turntable through the anti-slip washer.
Preferably, in the exhaust emission assembly, the anti-slip washer is sleeved on the adjusting turntable.
Preferably, in the exhaust emission assembly, a groove is formed in the peripheral surface of the adjusting turntable, the groove is circumferentially arranged along the adjusting turntable, and the anti-slip washer is clamped in the groove.
Preferably, in the exhaust emission component, the cover plate of the liquid sealing barrel is provided with ventilation holes.
Preferably, in the exhaust emission component, the air duct is a corrosion-resistant air duct.
The membrane desolventizing device for heavy metal isotope measurement comprises a tail gas emission component, wherein the tail gas emission component is any one of the tail gas emission components in the technical scheme.
The invention provides a tail gas emission component of a membrane desolventizing device for heavy metal isotope measurement, which comprises a liquid sealing barrel cover plate, an adjusting turntable and a gas guide tube; the liquid seal barrel cover plate is used for being placed on the liquid seal barrel; the adjusting turntable can be rotatably arranged on the liquid seal barrel cover plate around the axis of the adjusting turntable; the air duct is used for discharging tail gas; the air duct passes through the cover plate of the liquid sealing barrel and is used for extending into the liquid sealing barrel; the air duct is propped against the peripheral surface of the adjusting turntable; the adjusting turntable can drive the air duct to ascend or descend through friction force in the process of rotating around the axis of the adjusting turntable, and the air duct is kept static through friction force when the adjusting turntable is static.
The tail gas emission component of the membrane desolventizing device changes the environment of tail gas emission from air pressure to hydraulic pressure, so that the back pressure of the membrane desolventizing device is more stable, the signal output by the mass spectrum is ensured to be more stable, the sensitivity is higher, and the measurement accuracy is improved.
In addition, the exhaust emission assembly changes the exhaust emission environment from air pressure to hydraulic pressure, can reduce the phenomena of flameout and the like of the instrument, and has good reliability.
Furthermore, the tail gas emission component enables the position of the tail end of the gas guide pipe in liquid to be accurately adjusted, and can be kept fixed after being adjusted to the optimal position, so that the sensitivity of the membrane desolventizing device for heavy metal isotope measurement can be improved, stable signals can be obtained, and the measurement accuracy is further improved.
The invention also provides a film desolventizing device for heavy metal isotope measurement, which uses the tail gas emission component, has stable back pressure, can ensure the intensity and stability of mass spectrum output signals, and improves the measurement accuracy.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an exhaust emission component of a membrane desolventizing device according to an embodiment of the present invention;
wherein, in fig. 1 above:
an air duct 1; a bracket 2; an adjusting turntable 3; a non-slip washer 4; a liquid seal barrel cover plate 5; and a ventilation hole 6.
Detailed Description
The embodiment of the invention discloses a tail gas emission component of a membrane desolventizing device for heavy metal isotope measurement, which changes the environment of tail gas emission from air pressure to hydraulic pressure, so that back pressure is more stable, a signal output by mass spectrum is more stable, the sensitivity is higher, and the measurement precision can be improved. The embodiment of the invention also discloses a film desolventizing device for heavy metal isotope measurement, which is applied to the tail gas emission component, has stable back pressure, can ensure the intensity and stability of mass spectrum output signals and improves the measurement accuracy.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, an embodiment of the present invention provides an exhaust emission component of a membrane desolventizing device for heavy metal isotope measurement, where the exhaust emission component includes a liquid sealing barrel cover plate 5, an adjusting turntable 3 and an air duct 1; the liquid seal barrel cover plate 5 is used for being placed on a liquid seal barrel with a certain volume of water; the adjusting turntable 3 is rotatably arranged on the liquid seal barrel cover plate 5 around the axis of the adjusting turntable; the air duct 1 is used for discharging tail gas; the air duct 1 passes through the liquid sealing barrel cover plate 5 and is used for extending into the liquid sealing barrel and immersing into liquid in the liquid sealing barrel; the air duct 1 is propped against the outer peripheral surface of the adjusting turntable 3; wherein, the adjusting turntable 3 can drive the air duct 1 to ascend or descend through the friction force between the adjusting turntable and the air duct 1 in the process of rotating around the axis of the adjusting turntable, and the air duct 1 is kept static through the friction force between the adjusting turntable and the air duct 1 when the adjusting turntable is static.
When the tail gas emission component is applied, the liquid sealing barrel cover plate 5 is placed in the liquid sealing barrel with a certain volume of water, so that the terminal end of the tail gas emission pipe of the liquid film desolventizing device is led into liquid in the liquid sealing barrel through the gas guide pipe 1.
The tail gas emission component of the heavy metal isotope measurement membrane desolventizing device changes the environment of tail gas emission from air pressure to hydraulic pressure, so that back pressure is more stable, signals output by mass spectrum are more stable, sensitivity is high, and measurement accuracy can be improved.
In addition, the exhaust emission assembly changes the exhaust emission environment into hydraulic pressure, can reduce the phenomena of flameout and the like of instruments, and has good reliability.
Furthermore, the tail gas emission component enables the position of the tail end of the gas guide tube 1 in liquid to be accurately adjusted, and can be kept fixed after being adjusted to the optimal position, so that the sensitivity of the membrane desolventizing device for heavy metal isotope measurement can be improved, stable signals can be obtained, and the measurement accuracy is further improved.
In the exhaust emission assembly, a bracket 2 is fixed on a liquid seal barrel cover plate 5, and an adjusting turntable 3 can be rotatably arranged on the bracket 2 around the axis of the adjusting turntable. Specifically, the air duct 1 passes through the bracket 2 and then extends into the liquid seal barrel through the liquid seal barrel cover plate 5. The bracket 2 and the adjusting turntable 3 are respectively positioned above the cover plate 5 of the liquid sealing barrel.
The bracket 2 comprises two supporting plates which are respectively fixed on the cover plate 5 of the liquid sealing barrel, mounting pins are inserted in the two supporting plates, and the adjusting turntable 3 is sleeved on the mounting pins and is coaxial with the mounting pins.
In order to ensure that the adjusting turntable 3 can provide a sufficient friction force to the air duct 1, an anti-slip washer 4 is arranged at the outer peripheral surface of the adjusting turntable 3, and the air duct 1 is abutted against the outer peripheral surface of the adjusting turntable 3 through the anti-slip washer 4. The anti-slip washer 4 is sleeved on the adjusting turntable 3.
Preferably, in the exhaust emission assembly, a groove is formed in the outer circumferential surface of the adjusting turntable 3, the groove is circumferentially arranged along the adjusting turntable 3, and the anti-slip washer 4 is clamped in the groove and is tightly attached to the bottom surface of the groove.
The above-mentioned adjustment dial 3 is provided so as to be rotatable about its own axis within a preset angle range, and is positionable at an arbitrary angle within the preset angle range. Specifically, the adjusting turntable 3 is positioned at any angle within a preset angle range by friction force between the adjusting turntable and the bracket 2. More specifically, the mounting pins are fixedly connected with the two support plates respectively, and the adjusting turntable 3 is positioned at any angle within a preset angle range through friction force between the adjusting turntable 3 and the mounting pins, or the mounting pins are fixedly connected with the adjusting turntable 3, and the adjusting turntable 3 is positioned at any angle within the preset angle range through friction force between the mounting pins and the support plates. The above-mentioned preset angle range may be set to 0 deg. -360 deg..
The cover plate 5 of the liquid sealing barrel is provided with an air vent 6 for communicating the inside and the outside of the liquid sealing barrel, and the aperture of the air vent 6 can be set to be 10mm. The air duct 1 is a corrosion-resistant air duct 1, and can be specifically a Teflon air duct, and the size of the Teflon air duct can be set to be 6mm in inner diameter and 8mm in outer diameter; the bracket 2 is an acrylic bracket; the adjusting turntable 3 is arranged as an acrylic adjusting turntable; the liquid sealing barrel cover plate 5 is an acrylic liquid sealing barrel cover plate, the length and the width of the liquid sealing barrel cover plate are larger than 200mm, and the specific shape of the liquid sealing barrel cover plate is set according to the liquid sealing barrel; the anti-slip washer 4 is a silica gel anti-slip washer, and the size of the anti-slip washer can be set to be 7mm thick, and the inner diameter of the anti-slip washer is 168mm.
The tail gas emission component provided by the embodiment of the invention has the advantages of simple structure, convenience in production and manufacture and low production cost.
The embodiment of the invention also provides a membrane desolventizing device for heavy metal isotope measurement, which comprises a tail gas emission component, wherein the tail gas emission component is provided by the embodiment.
The membrane desolventizing device for heavy metal isotope measurement provided by the embodiment of the invention is applied to the tail gas emission component provided by the embodiment, the back pressure is stable, the intensity and the stability of a mass spectrum output signal can be ensured, and the measurement precision is improved. Of course, the film desolventizing device for heavy metal isotope measurement provided in this embodiment also has other components related to the tail gas emission component provided in the above embodiment, and will not be described herein again.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A tail gas emission component of a membrane desolventizing device for heavy metal isotope measurement, comprising:
the liquid seal barrel cover plate is used for being placed on the liquid seal barrel;
the adjusting turntable can be rotatably arranged on the liquid seal barrel cover plate around the axis of the adjusting turntable;
the air duct is used for discharging tail gas; the air duct passes through the cover plate of the liquid sealing barrel and is used for extending into the liquid sealing barrel; the air duct is propped against the outer peripheral surface of the adjusting turntable;
the adjusting turntable can drive the air duct to ascend or descend through friction force in the process of rotating around the axis of the adjusting turntable, and the air duct is kept static through friction force when the adjusting turntable is static.
2. The exhaust emission assembly of claim 1, wherein a bracket is fixed to the cover plate of the liquid seal barrel, and the adjustment dial is rotatably disposed on the bracket about its own axis.
3. The exhaust gas emission assembly according to claim 1, wherein an outer circumferential surface of the adjustment dial is provided with an anti-slip washer, and the gas-guide tube abuts against the outer circumferential surface of the adjustment dial through the anti-slip washer.
4. The exhaust gas emission assembly of claim 3, wherein said anti-slip washer is sleeved on said adjustment dial.
5. The exhaust gas emission assembly according to claim 4, wherein the outer circumferential surface of the adjustment dial is provided with grooves circumferentially arranged along the adjustment dial, and the anti-slip washer is caught in the grooves.
6. The exhaust gas discharge assembly according to claim 1, wherein the cover plate of the liquid seal barrel is provided with ventilation holes.
7. The exhaust gas discharge assembly of claim 1, wherein the gas conduit is a corrosion resistant gas conduit.
8. A membrane desolventizing device for heavy metal isotope measurement, characterized by comprising a tail gas emission assembly, wherein the tail gas emission assembly is the tail gas emission assembly according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810095857.4A CN108008050B (en) | 2018-01-31 | 2018-01-31 | Membrane desolventizing device for heavy metal isotope measurement and tail gas emission assembly thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810095857.4A CN108008050B (en) | 2018-01-31 | 2018-01-31 | Membrane desolventizing device for heavy metal isotope measurement and tail gas emission assembly thereof |
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| Publication Number | Publication Date |
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| CN108008050A CN108008050A (en) | 2018-05-08 |
| CN108008050B true CN108008050B (en) | 2023-10-20 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006272193A (en) * | 2005-03-29 | 2006-10-12 | Tokyo Institute Of Technology | Method and apparatus for separating zinc isotope |
| JP2007309661A (en) * | 2006-05-16 | 2007-11-29 | Shimadzu Corp | Chromatograph mass analyzer |
| JP2011196706A (en) * | 2010-03-17 | 2011-10-06 | Japan Grain Inspection Association | Method for discriminating grain-producing district using heavy metal isotope ratio composition |
| CN103487494A (en) * | 2013-09-11 | 2014-01-01 | 西北核技术研究所 | Environmental aerosol direct sampling gathering sample injecting device and quantitative analysis method |
| CN207816913U (en) * | 2018-01-31 | 2018-09-04 | 中国科学技术大学 | The film that heavy metal isotopes measure removes dissolving device and its exhaust emissions component |
-
2018
- 2018-01-31 CN CN201810095857.4A patent/CN108008050B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006272193A (en) * | 2005-03-29 | 2006-10-12 | Tokyo Institute Of Technology | Method and apparatus for separating zinc isotope |
| JP2007309661A (en) * | 2006-05-16 | 2007-11-29 | Shimadzu Corp | Chromatograph mass analyzer |
| JP2011196706A (en) * | 2010-03-17 | 2011-10-06 | Japan Grain Inspection Association | Method for discriminating grain-producing district using heavy metal isotope ratio composition |
| CN103487494A (en) * | 2013-09-11 | 2014-01-01 | 西北核技术研究所 | Environmental aerosol direct sampling gathering sample injecting device and quantitative analysis method |
| CN207816913U (en) * | 2018-01-31 | 2018-09-04 | 中国科学技术大学 | The film that heavy metal isotopes measure removes dissolving device and its exhaust emissions component |
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| CN108008050A (en) | 2018-05-08 |
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