CN111650230A - Vacuum sealing device for sample element measurement - Google Patents
Vacuum sealing device for sample element measurement Download PDFInfo
- Publication number
- CN111650230A CN111650230A CN202010335088.8A CN202010335088A CN111650230A CN 111650230 A CN111650230 A CN 111650230A CN 202010335088 A CN202010335088 A CN 202010335088A CN 111650230 A CN111650230 A CN 111650230A
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- Prior art keywords
- sample
- sealing
- platform
- vacuum
- cover plate
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- 238000007789 sealing Methods 0.000 title claims abstract description 96
- 238000005259 measurement Methods 0.000 title claims description 11
- 238000009434 installation Methods 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 230000001681 protective effect Effects 0.000 claims description 9
- 229920001973 fluoroelastomer Polymers 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 6
- 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
- 238000000034 method Methods 0.000 description 5
- 210000002421 cell wall Anatomy 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000002189 fluorescence spectrum Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
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
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, wherein the shell, the sealing cover plate and the platform are sequentially and hermetically connected from top to bottom; a ray tube mounting hole and a detector mounting hole are formed in the shell; the end, far away from the shell, of the sealing cover plate is provided with an installation groove, the bottom of the installation groove is provided with a through hole, the bottom of the installation groove is provided with a flow guide ring, the height of the flow guide ring is smaller than the depth of the installation groove, a gap is reserved between the flow guide ring and the wall of the installation groove, the wall of the installation groove is provided with an air hole, and the air hole is positioned above one end, close to the platform, of the flow guide ring; set up the sample frame on the platform, the sample frame is located water conservancy diversion circle inside and is located the through-hole below. An annular air duct is formed between the outer wall of the flow guide ring and the inner wall of the mounting groove, air flow enters from the lower part along the annular air duct when vacuum is released, impact of the air flow on a sample and a detection instrument is reduced, and dust and sample powder in the air are prevented from being attached to a 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 contents 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 small, medium and high-performance energy dispersion fluorescence spectrometer which is economical.
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, so as to excite a sample to be detected, each element in the excited sample can radiate secondary rays, and the secondary rays radiated by different elements have specific energy characteristics or wavelength characteristics; the detection system measures the energy and quantity of these secondary rays emitted, and then the instrument software converts the information collected by the detection system into the types and contents of various elements in the sample.
However, the existing energy dispersion fluorescence spectrometer has some defects: in analysis of the energy dispersion fluorescence spectrometer, unit components such as a ray generation system, a light path system, a detector and the like are directly used for sample test and analysis, the requirements on environments such as air flow, vacuum and the like are high, and the components need to work in a vacuum environment. However, when the vacuum system of the existing energy dispersion fluorescence spectrometer is evacuated, the detector is impacted by the air flow of the inlet air, so that the detector is damaged, and dust, sample powder and the like in the air are attached to the detector along with the air flow to pollute the detector, thereby affecting the measurement result.
Disclosure of Invention
The invention aims to overcome the defects that the vacuum system of the existing energy dispersion fluorescence spectrometer in the prior art can damage an internal detector when the vacuum is released, and the detector is polluted so as to influence the final result, and provides a vacuum sealing device for measuring sample elements.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
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 hermetically mounting the ray tube and the detector; the end, far away from the shell, of the sealing cover plate is provided with an installation groove, the bottom of the installation groove is provided with a through hole, the bottom of the installation groove is provided with a flow guide ring, the height of the flow guide ring is smaller than the depth of the installation groove, a gap is reserved between the flow guide ring and the wall of the installation groove, the wall of the installation groove is provided with an air hole, and the air hole is positioned above one end, close to the platform, of the flow guide ring; set up the sample frame on the platform, the sample frame is located water conservancy diversion circle inside and is located the through-hole below.
The invention further improves the following steps:
the shell is fixedly connected with the sealing cover plate through screws.
The end face of one end, connected with the sealing cover plate, of the shell 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 connected with the sealing cover plate in a sealing mode.
And a second sealing ring groove is formed in the end face of one end, connected with the platform, of the sealing cover plate, a second sealing ring is embedded in the second sealing ring groove, and the second sealing ring is connected with the platform in a sealing mode.
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, the 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 apron 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 apron and the platform, the analysis room is located the sample room top, and through-hole is seted up with analysis room and sample room intercommunication through the tank bottom at the mounting groove, the sample is placed and is carried out sample element measurement through installation ray tube and detector on the casing on the sample frame. Offer the mounting groove on the end of keeping away from the casing at sealed apron, the through-hole is offered to the tank bottom of mounting groove, the mounting groove bottom sets up the water conservancy diversion circle, leave the clearance between water conservancy diversion circle and the cell wall of mounting groove, form annular wind channel between water conservancy diversion circle outer wall and mounting groove inner wall like this, be favorable to the gas flow more, the air current gets into analysis room and sample room from the below along with annular wind channel when letting out the vacuum, compare in the current vacuum apparatus that the air current directly got into the analysis room when letting out the vacuum, the impact of air current to sample and detecting instrument has been reduced, the device damage of bringing because the air current strikes has been avoided, and simultaneously, the rectification effect through the water conservancy diversion circle, the effectual dust and the sample powder that prevent in the air are attached to the detector along with the air current, guarantee the accuracy of detection result, effectively avoided. Meanwhile, the air hole is positioned above one end, close to the platform, of the flow guide ring, so that gas can be discharged quickly during vacuumizing, and the measuring efficiency is improved.
Furthermore, a sealing groove is formed in the sealing cover plate and the lifting platform at the same time, and the sealing rings are arranged among the shell, the sealing cover plate and the platform to achieve sealing connection.
Furthermore, the platform is a lifting platform, the vacuum chamber is sealed in a mode of lifting and descending the lifting platform, and the detection efficiency is improved while the sealing performance is effectively improved.
Further, the inside sample protective sheath that sets up of sample frame, the sample is placed on the sample frame through the sample protective sheath, further reduces the impact of air current to the sample.
Drawings
FIG. 1 is a schematic view of the overall structure of the vacuum sealing apparatus according to the present invention;
FIG. 2 is a schematic view of the sealing cap of the present invention;
figure 3 is a side view of the seal cap of the present invention.
Wherein: 1-pores; 2-a flow guide ring; 3-a second seal ring groove; 4-vacuum chamber; 5-a second sealing ring; 6-a platform; 7-a sample holder; 8-ray tube; 9-a detector; 10-a first seal ring groove; 11-first sealing ring.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or 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 accompanying drawings:
referring to fig. 1 to 3, the vacuum sealing device for measuring sample elements of the invention 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, and are hermetically connected with each other, an analysis chamber is formed between the shell and the sealing cover plate, a sample chamber is formed between the sealing cover plate and the platform 6, and a through hole is formed in the sealing cover plate, so that the analysis chamber is communicated with the sample chamber, and when the vacuum sealing device is used, the analysis chamber and the sample chamber are both a vacuum chamber 4.
Specifically, the casing passes through screw fixed connection with sealed apron to set up first sealing washer recess 10 on the tip of the one end that casing and sealed apron are connected, first sealing washer 11 is established to first sealing washer recess 10 inlays, guarantees the sealing connection of casing and sealed apron through first sealing washer 11, and first sealing washer 11 generally is the fluororubber material, and first sealing washer recess 10 is the ring dress recess, and inwards caves in. Set up sample detecting instrument on the casing, sample detecting instrument's one end is located the casing inside, uses energy dispersion fluorescence spectrometer as the example in this embodiment, sets up energy dispersion fluorescence spectrometer's a ray tube 8 and a detector 9 on the casing, and the one end of a ray tube 8 and a detector 9 all is located the casing inside.
A mounting groove is formed in one end, far away from the shell, of the sealing cover plate, a through hole is formed in the bottom of the mounting groove, and the mounting groove is communicated with the interior of the shell; the bottom of the mounting groove is provided with a flow guide ring 2, and a gap is reserved between the flow guide ring 2 and the groove wall of the mounting groove; offer the gas pocket 1 that is used for admitting air or giving vent to anger on the cell wall of mounting groove, the clearance intercommunication between gas pocket 1 and water conservancy diversion circle 2 and the cell wall of mounting groove, and whole gas pocket 1 all just is to water conservancy diversion circle 2, and gas pocket 1 lies in between the upper and lower both ends of water conservancy diversion circle 2 on the horizontal direction promptly, and the groove depth that highly is less than mounting groove of water conservancy diversion circle 2 simultaneously. 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 the second sealing ring groove 3 is an annular groove and is recessed inwards; the second sealing ring 5 is embedded in the second sealing ring groove 3, the second sealing ring 5 is generally 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 sealed apron sealing connection, sample frame 7 is located water conservancy diversion circle 2 insidely, and sample frame 7 is higher than the clearance between water conservancy diversion circle 2 and the 6 upper surface of platform promptly, and the inside sample protective sheath that sets up of sample frame 7, the sample pass through the sample protective sheath place with the sample frame on. The platform 6 can be selected as a lifting platform, so that the sample can be conveniently lifted and lowered to be replaced.
The specific application method of the vacuum sealing device for measuring the sample elements of the invention is described as follows:
connecting the air hole 1 of the vacuum sealing device with a vacuum pump through a hose, wrapping a sample through a sample protective sleeve and then placing the sample on a sample rack 7; the platform 6 is connected with the sealing cover plate in a sealing mode, the sample chamber and the analysis chamber are further sealed, the vacuum pump is used for vacuumizing the sample chamber and the analysis chamber into a vacuum chamber 4 through the air hole 1, then sample analysis is conducted through the ray tube 8 and the detector 9, the arrow in the figure 1 indicates the transmission direction of the ray, the ray tube 8 emits the ray to the sample once, the sample excites the ray to emit the secondary ray to the detector 9, after the sample analysis is completed or the sample needs to be changed, the vacuum is discharged through the air hole 1, after the vacuum discharge is completed, the platform 6 is separated from the sealing cover plate, and the sample is changed or other operations are conducted.
When the vacuum is released, air enters the sample chamber and the analysis chamber from the air hole 1, if the flow guide ring 2 is not arranged, the air flow can impact the sample, the detector 9 and other components, and dust and sample powder in the air can enable the sample powder to be attached to the detector 9 along with the air flow, so that the normal work of the detector 9 is influenced. Through setting up water conservancy diversion circle 2, water conservancy diversion circle 2 outer wall forms annular wind channel with the sealed lid inner wall of vacuum chamber, makes the air follow annular wind channel and downward entering sample room and analysis room when letting out the vacuum, has reduced the impact of air current to parts such as detector 9 and the influence of dust and sample powder in the air to detector 9.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (8)
1. A vacuum sealing device for measuring 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;
a ray tube mounting hole and a detector mounting hole are formed in the shell, and the ray tube mounting hole and the detector mounting hole are respectively used for hermetically mounting a ray tube (8) and a detector (9); an installation groove is formed in one end, far away from the shell, of the sealing cover plate, a through hole is formed in the bottom of the installation groove, a flow guide ring (2) is arranged at the bottom of the installation groove, the height of the flow guide ring (2) is smaller than the groove depth of the installation groove, a gap is reserved between the flow guide ring (2) and the groove wall of the installation groove, an air hole (1) is formed in the groove wall of the installation groove, and the air hole (1) is located above one end, close to the platform (6), of the flow guide ring (2; set up sample frame (7) on platform (6), sample frame (7) are located water conservancy diversion circle (2) inside and are located the through-hole below.
2. The vacuum sealing apparatus for sample element measurement according to claim 1, wherein the housing and the sealing cover plate are fixedly connected by screws.
3. The vacuum sealing device for sample element measurement according to claim 1, wherein a first sealing ring groove (10) is formed in an end surface of one end of the housing connected with the sealing cover plate, a first sealing ring (11) is embedded in the first sealing ring groove (10), and the first sealing ring (11) is connected with the sealing cover plate in a sealing manner.
4. The vacuum sealing device for sample element measurement according to claim 3, wherein a second sealing ring groove (3) is formed in an end face of one end of the sealing cover plate connected with the platform (6), a second sealing ring (5) is embedded in the second sealing ring groove (3), and the second sealing ring (5) is connected with the platform (6) in a sealing manner.
5. The vacuum sealing device for sample element measurement according to claim 4, wherein the first sealing ring (11) and the second sealing ring (5) are made of fluororubber.
6. The vacuum sealing device for sample element measurement according to claim 1, wherein the platform (6) is a lift platform.
7. The vacuum sealing device for sample element measurement according to claim 1, wherein a sample protective sleeve is arranged inside the sample holder (7), and the sample is placed on the sample holder through the sample protective sleeve.
8. The vacuum sealing apparatus for sample element measurement 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111650230A true CN111650230A (en) | 2020-09-11 |
| CN111650230B CN111650230B (en) | 2023-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010335088.8A Active CN111650230B (en) | 2020-04-24 | 2020-04-24 | Vacuum sealing device for measuring sample elements |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114935581A (en) * | 2022-07-26 | 2022-08-23 | 深圳市科誉仪器有限公司 | Automatic change intelligent integral type X ray fluorescence spectrum appearance |
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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114935581A (en) * | 2022-07-26 | 2022-08-23 | 深圳市科誉仪器有限公司 | Automatic change intelligent integral type X ray fluorescence spectrum appearance |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN111650230B (en) | 2023-10-27 |
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