CN111650230B - Vacuum sealing device for measuring sample elements - Google Patents
Vacuum sealing device for measuring sample elements Download PDFInfo
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- CN111650230B CN111650230B CN202010335088.8A CN202010335088A CN111650230B CN 111650230 B CN111650230 B CN 111650230B CN 202010335088 A CN202010335088 A CN 202010335088A CN 111650230 B CN111650230 B CN 111650230B
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- sample
- sealing
- platform
- groove
- guide ring
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- 238000007789 sealing Methods 0.000 title claims abstract description 103
- 229920001973 fluoroelastomer Polymers 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 abstract description 6
- 239000000428 dust Substances 0.000 abstract description 5
- 238000004458 analytical method Methods 0.000 description 18
- 239000006185 dispersion Substances 0.000 description 9
- 238000009434 installation Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002189 fluorescence spectrum Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
- G01N23/223—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by irradiating the sample with X-rays or gamma-rays and by measuring X-ray fluorescence
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The invention belongs to the field of vacuum devices, and discloses a vacuum sealing device for measuring sample elements, which comprises a shell, a sealing cover plate and a platform which are sequentially connected in a sealing manner from top to bottom; the shell is provided with a ray tube mounting hole and a detector mounting hole; the sealing cover plate is provided with a mounting groove at one end far away from the shell, the bottom of the mounting groove is provided with a through hole, the bottom of the mounting groove is provided with a guide ring, the height of the guide ring is smaller than the groove depth of the mounting groove, a gap is reserved between the guide ring and the groove wall of the mounting groove, the groove wall of the mounting groove is provided with an air hole, and the air hole is positioned above one end of the guide ring close to the platform; the platform is provided with a sample rack, and the sample rack is positioned inside the guide ring and below the through hole. An annular air channel is formed between the outer wall of the guide ring and the inner wall of the mounting groove, and air flow enters from the lower side along the annular air channel when vacuum is discharged, so that the impact of the air flow on a sample and a detecting instrument is reduced, and dust and sample powder in the air are prevented from being attached to the detector along with the air flow.
Description
Technical Field
The invention belongs to the field of vacuum devices, and relates to a vacuum sealing device for measuring sample elements.
Background
The energy dispersion fluorescence spectrometer is configured according to a ray fluorescence spectrum analysis method, can analyze the component content of various elements in a solid or powdery sample, has the characteristics of high sensitivity, good precision, stable performance, high analysis speed and the like, and is a medium-small, economical and high-performance energy dispersion ray spectrometer.
The energy dispersion fluorescence spectrometer consists of an excitation source ray tube and a detection system, wherein the ray tube generates incident rays, namely primary rays, a sample to be tested is excited, each element in the excited sample emits secondary rays, and the secondary rays emitted by different elements have specific energy characteristics or wavelength characteristics; the detection system measures the energy and quantity of these secondary rays, and the instrument software then converts the information collected by the detection system into the types and contents of the various elements in the sample.
However, the existing energy dispersion fluorescence spectrometer has some defects: in the analysis of the energy dispersion fluorescence spectrometer, the ray generation system, the optical path system, the detector and other unit components are directly used for sample test analysis, and have high requirements on the environments such as airflow, vacuum and the like, and the components need to work in the vacuum environment. However, the vacuum system of the existing energy dispersion fluorescence spectrometer can impact the detector when the vacuum is released, so that the detector is damaged, dust, sample powder and the like in the air can be attached to the detector along with the air flow to pollute the detector, and the measurement result is affected.
Disclosure of Invention
The invention aims to overcome the defects that the vacuum system of the prior energy dispersion fluorescence spectrometer in the prior art can damage an internal detector when vacuum is discharged and pollute the detector to further influence the final result, and provides a vacuum sealing device for measuring sample elements.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
a vacuum sealing device for measuring sample elements comprises a shell, a sealing cover plate and a platform which are sequentially connected in a sealing manner from top to bottom; the shell is provided with a ray tube mounting hole and a detector mounting hole which are respectively used for sealing and mounting the ray tube and the detector; the sealing cover plate is provided with a mounting groove at one end far away from the shell, the bottom of the mounting groove is provided with a through hole, the bottom of the mounting groove is provided with a guide ring, the height of the guide ring is smaller than the groove depth of the mounting groove, a gap is reserved between the guide ring and the groove wall of the mounting groove, the groove wall of the mounting groove is provided with an air hole, and the air hole is positioned above one end of the guide ring close to the platform; the platform is provided with a sample rack, and the sample rack is positioned inside the guide ring and below the through hole.
The invention is further improved in that:
the shell is fixedly connected with the sealing cover plate through screws.
The end face of one end of the shell, which is connected with the sealing cover plate, is provided with a first sealing ring groove, a first sealing ring is embedded in the first sealing ring groove, and the first sealing ring is in sealing connection with the sealing cover plate.
And a second sealing ring groove is formed in the end face of one end, connected with the platform, of the sealing cover plate, and a second sealing ring is embedded in the second sealing ring groove and is in sealing connection with the platform.
The first sealing ring and the second sealing ring are made of fluororubber.
The platform is a lifting platform.
The inside sample protective sheath that sets up of sample frame, sample is placed on the sample frame through the sample protective sheath.
The vacuum pump is connected with the air hole.
Compared with the prior art, the invention has the following beneficial effects:
through setting up casing, sealed board and the platform of sealing connection in proper order, form the analysis room between casing and the sealed apron, form the sample room between sealed board and the platform, the analysis room is located the sample room top, sets up the through-hole through the tank bottom at mounting groove and communicates analysis room and sample room, and the sample is placed on the sample frame and is measured through installation tube and detector on the casing. The mounting groove is formed in one end, far away from the shell, of the sealing cover plate, the through hole is formed in the bottom of the mounting groove, the guide ring is arranged at the bottom of the mounting groove, a gap is reserved between the guide ring and the groove wall of the mounting groove, so that an annular air channel is formed between the outer wall of the guide ring and the inner wall of the mounting groove, gas flow is more beneficial to flowing, when vacuum is discharged, the gas flow enters the analysis chamber and the sample chamber from the lower side along the annular air channel, compared with the existing vacuum device, which directly enters the analysis chamber, of the gas flow when vacuum is discharged, the impact of the gas flow on a sample and a detecting instrument is reduced, the damage of devices caused by the impact of the gas flow is avoided, meanwhile, dust in the air and sample powder are effectively prevented from adhering to the detector along with the gas flow through the rectification effect of the guide ring, the accuracy of the detection result is guaranteed, and the measurement error caused by the pollution detector is effectively avoided. Meanwhile, the air hole is positioned above one end of the guide ring close to the platform, so that the air can be discharged rapidly during vacuumizing, and the measuring efficiency is improved.
Further, sealing grooves are formed in the sealing cover plate and the lifting platform at the same time, sealing rings are arranged among the shell, the sealing cover plate and the platform to realize sealing connection, the structure is simple, the realization is convenient, and the stable vacuum sealing effect is ensured.
Furthermore, the platform is a lifting platform, and the vacuum chamber is sealed in a lifting platform lifting and descending mode, so that the sealing performance is effectively improved, and the detection efficiency is improved.
Further, the sample protection sleeve is arranged inside the sample rack, and the sample is placed on the sample rack through the sample protection sleeve, so that the impact of air flow on the sample is further reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of a vacuum sealing apparatus of the present invention;
FIG. 2 is a schematic view of a seal cap according to the present invention;
fig. 3 is a side view of the seal cap of the present invention.
Wherein: 1-air holes; 2-a guide ring; 3-a second seal ring groove; 4-a vacuum chamber; 5-a second sealing ring; 6-a platform; 7-a sample holder; an 8-ray tube; 9-a detector; 10-a first seal ring groove; 11-a first sealing ring.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is described in further detail below with reference to the attached drawing figures:
referring to fig. 1 to 3, the vacuum sealing device for measuring sample elements comprises a shell, a sealing cover plate and a platform 6, wherein the shell, the sealing cover plate and the platform 6 are sequentially arranged from top to bottom, the shell and the sealing cover plate are in sealing connection, an analysis chamber is formed between the shell and a sealing cover plate, a sample chamber is formed between the sealing cover plate and the platform 6, and meanwhile, a through hole is formed in the sealing cover plate, so that the analysis chamber is communicated with the sample chamber, and the analysis chamber and the sample chamber are both vacuum chambers 4 when the vacuum sealing device is used.
Specifically, the shell is fixedly connected with the sealing cover plate through a screw, a first sealing ring groove 10 is formed in the end portion of one end, connected with the sealing cover plate, of the shell, a first sealing ring 11 is embedded in the first sealing ring groove 10, the sealing connection between the shell and the sealing cover plate is guaranteed through the first sealing ring 11, the first sealing ring 11 is made of fluororubber, and the first sealing ring groove 10 is a ring-mounted groove and is recessed inwards. The shell is provided with a sample detecting instrument, one end of the sample detecting instrument is located inside the shell, in this embodiment, the energy dispersion fluorescence spectrometer is taken as an example, the shell is provided with a ray tube 8 and a detector 9 of the energy dispersion fluorescence spectrometer, and one ends of the ray tube 8 and the detector 9 are located inside the shell.
One end of the sealing cover plate, which is far away from the shell, is provided with a mounting groove, the bottom of the mounting groove is provided with a through hole, and the mounting groove is communicated with the inside of the shell; the bottom of the installation groove is provided with a guide ring 2, and a gap is reserved between the guide ring 2 and the groove wall of the installation groove; an air hole 1 for air inlet or air outlet is formed in the wall of the installation groove, the air hole 1 is communicated with a gap between the guide ring 2 and the wall of the installation groove, the whole air hole 1 is opposite to the guide ring 2, namely, the air hole 1 is positioned between the upper end and the lower end of the guide ring 2 in the horizontal direction, and meanwhile, the height of the guide ring 2 is smaller than the groove depth of the installation groove. The end face of one end of the sealing cover plate, which is connected with the platform 6, is provided with a second sealing ring groove 3, and the second sealing ring groove 3 is a ring-mounted groove and is inwards recessed; the second sealing ring 5 is embedded in the second sealing ring groove 3, the second sealing ring 5 is made of fluororubber, and the sealing connection between the sealing cover plate and the platform 6 is ensured through the second sealing ring 5.
Set up sample frame 7 on the platform 6, when platform 6 and sealing cover plate sealing connection, sample frame 7 is located inside the water conservancy diversion circle 2, and the height of sample frame 7 is higher than the clearance between water conservancy diversion circle 2 and the upper surface of platform 6 promptly, and sample frame 7 is inside to set up the sample protective sheath, and the sample is placed on with the sample frame through the sample protective sheath. The platform 6 can be selected to lift the platform, so that the sample can be conveniently replaced by ascending and descending.
The following describes a specific method for using the vacuum sealing apparatus for measuring sample elements of the present invention:
connecting an air hole 1 of the vacuum sealing device with a vacuum pump through a hose, wrapping a sample through a sample protection sleeve, and then placing the sample on a sample frame 7; the platform 6 is in sealing connection with the sealing cover plate, the sample chamber and the analysis chamber are further sealed, then the sample chamber and the analysis chamber are vacuumized to form a vacuum chamber 4 through the air hole 1 by utilizing the vacuum pump, then sample analysis is carried out through the ray tube 8 and the detector 9, an arrow in fig. 1 indicates the transmission direction of rays, the ray tube 8 emits primary rays to a sample, the sample is excited to emit secondary rays to the detector 9, after the sample analysis is finished or when the sample needs to be replaced, vacuum is discharged through the air hole 1, after the vacuum discharge is finished, the platform 6 is separated from the sealing cover plate, and sample replacement or other operations are carried out.
When the vacuum is released, air enters the sample chamber and the analysis chamber through the air hole 1, if the guide ring 2 is not arranged, the air flow can impact the sample, the detector 9 and other components, dust in the air and sample powder can enable the sample powder to be attached to the detector 9 along with the air flow, and the normal operation of the detector 9 is affected. By arranging the guide ring 2, the outer wall of the guide ring 2 and the inner wall of the vacuum chamber sealing cover form an annular air channel, so that air flows downwards into the sample chamber and the analysis chamber along the annular air channel when vacuum is discharged, and the impact of air flow on the detector 9 and other parts and the influence of dust and sample powder in the air on the detector 9 are reduced.
The above is only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (8)
1. The vacuum sealing device for measuring the sample elements is characterized by comprising a shell, a sealing cover plate and a platform (6) which are sequentially connected in a sealing manner from top to bottom;
the shell is provided with a ray tube mounting hole and a detector mounting hole which are respectively used for sealing and mounting the ray tube (8) and the detector (9); the sealing cover plate is provided with a mounting groove at one end far away from the shell, the bottom of the mounting groove is provided with a through hole, the bottom of the mounting groove is provided with a guide ring (2), the height of the guide ring (2) is smaller than the groove depth of the mounting groove, a gap is reserved between the guide ring (2) and the groove wall of the mounting groove, the groove wall of the mounting groove is provided with an air hole (1), and the air hole (1) is positioned above one end, close to the platform (6), of the guide ring (2); a sample frame (7) is arranged on the platform (6), and the sample frame (7) is positioned in the guide ring (2) and below the through hole;
the air hole (1) is positioned between the upper end and the lower end of the guide ring (2) in the horizontal direction;
the height of the sample rack (7) is higher than the gap between the guide ring (2) and the upper surface of the platform (6).
2. The vacuum sealing apparatus for measuring a sample element according to claim 1, wherein the housing is fixedly connected to the sealing cover plate by screws.
3. The vacuum sealing device for measuring sample elements according to claim 1, wherein a first sealing ring groove (10) is formed in an end face of one end, connected with the sealing cover plate, of the shell, a first sealing ring (11) is embedded in the first sealing ring groove (10), and the first sealing ring (11) is in sealing connection with the sealing cover plate.
4. The vacuum sealing device for measuring the sample elements according to claim 3, wherein a second sealing ring groove (3) is formed in the end face of one end, connected with the platform (6), of the sealing cover plate, and a second sealing ring (5) is embedded in the second sealing ring groove (3), and the second sealing ring (5) is in sealing connection with the platform (6).
5. The vacuum sealing apparatus for measuring a sample element according to claim 4, wherein the first seal ring (11) and the second seal ring (5) are made of fluororubber.
6. Vacuum sealing apparatus for sample element measurement according to claim 1, characterized in that the platform (6) is a lifting platform.
7. Vacuum sealing apparatus for measuring sample elements according to claim 1, characterized in that a sample protection sleeve is arranged inside the sample holder (7), through which the sample is placed on the sample holder.
8. The vacuum sealing apparatus for measuring a sample element according to claim 1, further comprising a vacuum pump connected to the air hole (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010335088.8A CN111650230B (en) | 2020-04-24 | 2020-04-24 | Vacuum sealing device for measuring sample elements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010335088.8A CN111650230B (en) | 2020-04-24 | 2020-04-24 | Vacuum sealing device for measuring sample elements |
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| Publication Number | Publication Date |
|---|---|
| CN111650230A CN111650230A (en) | 2020-09-11 |
| CN111650230B true CN111650230B (en) | 2023-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010335088.8A Active CN111650230B (en) | 2020-04-24 | 2020-04-24 | Vacuum sealing device for measuring sample elements |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114935581B (en) * | 2022-07-26 | 2023-01-17 | 深圳市科誉仪器有限公司 | Automatic change intelligent integral type X ray fluorescence spectrum appearance |
| CN117990726B (en) * | 2024-04-07 | 2024-06-07 | 吉林省继明生物科技有限责任公司 | CYP3A4 enzyme optical detection device based on spectrometry |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04366758A (en) * | 1991-06-14 | 1992-12-18 | Shimadzu Corp | Fluorescence x-ray spectrometer |
| US5484572A (en) * | 1993-10-01 | 1996-01-16 | Taiho Industries Co., Ltd. | Apparatus for collecting medical test specimens |
| CN202018430U (en) * | 2011-03-17 | 2011-10-26 | 东莞市善时电子科技有限公司 | X-ray fluorescence spectrometer |
| CN103472081A (en) * | 2013-09-27 | 2013-12-25 | 四川新先达测控技术有限公司 | Automatic energy dispersive X-ray fluorescence analysis test platform |
| CN206074563U (en) * | 2016-09-30 | 2017-04-05 | 广州市立强仪器科技有限公司 | A kind of gas sensor |
-
2020
- 2020-04-24 CN CN202010335088.8A patent/CN111650230B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04366758A (en) * | 1991-06-14 | 1992-12-18 | Shimadzu Corp | Fluorescence x-ray spectrometer |
| US5484572A (en) * | 1993-10-01 | 1996-01-16 | Taiho Industries Co., Ltd. | Apparatus for collecting medical test specimens |
| CN202018430U (en) * | 2011-03-17 | 2011-10-26 | 东莞市善时电子科技有限公司 | X-ray fluorescence spectrometer |
| CN103472081A (en) * | 2013-09-27 | 2013-12-25 | 四川新先达测控技术有限公司 | Automatic energy dispersive X-ray fluorescence analysis test platform |
| CN206074563U (en) * | 2016-09-30 | 2017-04-05 | 广州市立强仪器科技有限公司 | A kind of gas sensor |
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| CN111650230A (en) | 2020-09-11 |
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