CN116429959A - Multi-slit switching structure for detector - Google Patents
Multi-slit switching structure for detector Download PDFInfo
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- CN116429959A CN116429959A CN202310700474.6A CN202310700474A CN116429959A CN 116429959 A CN116429959 A CN 116429959A CN 202310700474 A CN202310700474 A CN 202310700474A CN 116429959 A CN116429959 A CN 116429959A
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- slit
- switching structure
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- detector
- slits
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- 238000009434 installation Methods 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 230000003595 spectral effect Effects 0.000 description 7
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- G01N30/74—Optical detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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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)
- Spectroscopy & Molecular Physics (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
The invention provides a multi-slit switching structure for a detector, and relates to the technical field of chromatograph. The multi-slit switching structure for the detector comprises a support frame, a rotary driving piece, a combined slit disc and a slit mounting disc; the rotary driving piece is arranged on the supporting frame, the slit installation plate is in transmission connection with the rotary driving piece, and the combined slit plate is arranged on the slit installation plate so that the rotary driving piece is driven. Achieving the technical effect that slits with various sizes can be selected.
Description
Technical Field
The invention relates to the technical field of chromatographs, in particular to a multi-slit switching structure for a detector.
Background
The detector belongs to a core module of the high performance liquid chromatograph, and is responsible for converting physical or chemical characteristic information of a sample into an easily-measured electric signal and inputting the easily-measured electric signal into a data processing system so as to obtain a chromatogram of a sample component. Diode array detectors are the most widely used detectors in HPLC and can be used for qualitative and quantitative detection of most of the common organic and some inorganic substances with uv absorption. Sample components separated in the chromatographic column sequentially enter a detector, and the detector can convert optical signals absorbed by the components into electrical signals with different intensities according to different absorption strengths of the components to monochromatic light. The electric signals are transmitted to a data processing system such as a PC and the like, and analysis such as sample qualitative, quantitative, judgment and separation is completed by means of a chromatographic workstation.
Both spectral bandwidth and resolution are factors that affect the performance of a diode array detector. The spectral bandwidth influences the light flux, so that the signal to noise ratio of the instrument in use is influenced; the resolution ratio affects the imaging quality of the spectrum, and further affects the accuracy of the instrument in use. Specifically, the width of the entrance slit in the optical path will affect the spectral bandwidth and resolution, i.e. the wider the slit, the larger the spectral bandwidth, the higher the luminous flux, the higher the signal-to-noise ratio of the instrument, and the worse the resolution, the lower the imaging quality will be.
The market part instruments balance the spectral bandwidth and the resolution, and a scheme of using a single-size slit is selected to face various test samples, so that the test results are easy to deviate.
Therefore, providing a multi-slit switching structure for a detector is an important technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a multi-slit switching structure for a detector, which is used for solving the technical problem that in the prior art, a test result is easy to deviate due to single slit size.
In a first aspect, an embodiment of the present invention provides a multi-slit switching structure for a detector, including a support frame, a rotary driving member, a combined slit disk, and a slit mounting disk;
the rotary driving piece is installed on the support frame, the slit installation plate is in transmission connection with the rotary driving piece, and the combined slit plate is installed on the slit installation plate, so that the rotary driving piece drives the combined slit plate to swing.
With reference to the first aspect, the embodiment of the present invention provides a possible implementation manner of the first aspect, where the slit mounting disk includes a connection base, a connection rod, and a mounting frame for carrying the combined slit disk;
the mounting frame is connected with the connecting base through the connecting rod;
the connecting base is mounted on the output shaft of the rotary driving piece.
With reference to the first aspect, the embodiment of the present invention provides a possible implementation manner of the first aspect, where the connection base is semicircular, and a top plane of the connection base is connected with the connection rod.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, where at least two limit levers for limiting a swinging range of the connecting rod are provided on the supporting frame, and the limit levers are provided on two sides of the connecting rod.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, where the combined slit disk includes a disk body, and a plurality of slits are formed on the disk body;
the tray body is installed on the installation frame.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, where the plurality of slits are uniformly distributed on the disc body, and the sizes of the plurality of slits sequentially increase, and the plurality of slits are connected in a circular arc shape.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, where the plurality of slits are uniformly distributed on the disc body with an axis center of the rotary driving member as a center line.
With reference to the first aspect, the embodiment of the present invention provides a possible implementation manner of the first aspect, where the support frame uses a support plate.
With reference to the first aspect, the embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the above-mentioned rotary driving member adopts a stepper motor.
The beneficial effects are that:
the invention provides a multi-slit switching structure for a detector, which comprises a support frame, a rotary driving piece, a combined slit disc and a slit mounting disc, wherein the support frame is provided with a plurality of grooves; the rotary driving piece is arranged on the supporting frame, the slit installation plate is in transmission connection with the rotary driving piece, and the combined slit plate is arranged on the slit installation plate so that the rotary driving piece drives the combined slit plate to swing.
Specifically, the rotation driving piece can drive the slit installation plate to rotate, and the slit installation plate can drive the combined slit plate to swing through rotation, so that slits with different sizes on the combined slit plate 300 are aligned to the concave reflecting mirror, the light path of the concave reflecting mirror can be transmitted through the slits, and different slits can be selected through comparison in the detection process of the instrument, so that proper spectral bandwidth and resolution can be obtained, and the accuracy of a result is improved. In addition, through the mode of swing switching not unidimensional slit, reduced the light path height, effectively utilized the light path casing space.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a multi-slit switching structure for a detector according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a detector light path equipped with a multi-slit switching structure for a detector according to an embodiment of the present invention.
Icon:
100-supporting frames; 110-limiting a stop lever;
200-rotating a driving member;
300-combining slit discs; 310-a tray body; 320-slits;
400-slot mounting plate; 410-connecting a base; 420-connecting rod; 430-mounting frame;
510, a light source; 520-a lamp source lens; 530-a flow-through cell; 540-concave mirror; 550-grating; 560-diode array sensor.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. 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.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The invention will now be described in further detail with reference to specific examples thereof in connection with the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention provides a multi-slit switching structure for a detector, including a support frame 100, a rotary driving member 200, a combined slit disk 300, and a slit mounting disk 400; the rotary driving member 200 is mounted on the support frame 100, and the slit mounting plate 400 is in transmission connection with the rotary driving member 200, and the combined slit plate 300 is mounted on the slit mounting plate 400 so that the rotary driving member 200 drives the combined slit plate 300 to swing.
Specifically, the rotation driving piece 200 can drive the slit installation plate 400 to rotate, and the slit installation plate 400 can drive the combined slit plate 300 to swing when rotating, so that the slits 320 with different sizes on the combined slit plate 300 are aligned to the concave reflecting mirror 540, the light path of the concave reflecting mirror 540 can be propagated through the slits 320, and the instrument can obtain proper spectral bandwidth and resolution by comparing and selecting different slits 320 in the detection process, thereby improving the accuracy of the result. In addition, the slit 320 of different sizes is switched by the swing mode, so that the light path height is reduced, and the light path housing space is effectively utilized.
Wherein, the support 100 can adopt a support plate, the bottom of which is provided with a connecting hole for connecting with the camera bellows, and the support plate can be arranged in the camera bellows through bolts.
The rotation driving member 200 may employ a stepping motor. In addition, a person skilled in the art can select the type of the rotation driving member 200 according to the actual requirement, and the description thereof will not be repeated.
Referring to fig. 1, in an alternative of the present embodiment, a slit mounting plate 400 includes a connection base 410, a connection rod 420, and a mounting frame 430 for carrying a combined slit plate 300; the mounting frame 430 is connected with the connection base 410 through the connection rod 420; the connection base 410 is mounted on the output shaft of the rotary drive member 200.
Specifically, the rotation driving member 200 can drive the connection base 410 to rotate, and the connection base 410 can drive the connection rod 420 and the mounting frame 430 to swing, so as to swing the combined slit disc 300 located on the mounting frame 430, and thus the slits 320 with different sizes on the combined slit disc 300 can rotate the concave mirror 540 in opposite directions.
Referring to fig. 1, in an alternative of the present embodiment, the connection base 410 is semicircular, and a top plane of the connection base 410 is connected to the connection rod 420.
Specifically, the coupling base 410 is a semicircular plate, and the top plane of the coupling base 410 is coupled to the coupling rod 420, so that the stability of the coupling base 410 can be improved.
Referring to fig. 1, in an alternative scheme of this embodiment, at least two limiting bars 110 for limiting the swing range of the connecting rod 420 are provided on the supporting frame 100, and both sides of the connecting rod 420 are provided with the limiting bars 110.
Specifically, the range of the swing of the connecting rod 420, i.e., the range of the swing of the combination slit disk 300 is restricted by the stopper rod 110.
Wherein the swing angle of the combination slit disk 300 is set between 80-120 degrees.
Referring to fig. 1, in an alternative scheme of the present embodiment, a combined slit disk 300 includes a disk body 310, where a plurality of slits 320 are formed on the disk body 310; the tray 310 is mounted on the mounting frame 430.
Specifically, the tray 310 is provided with a plurality of slits 320. For example, five slits 320 are opened on the disk body 310, and the dimensions of the five slits 320 are 1nm, 2nm, 4nm, 5nm, and 16nm, respectively.
The plurality of slits 320 are uniformly distributed on the disk 310 with the axis of the rotary driving member 200 as a center line.
Referring to fig. 2, the detector equipped with the embodiment of the present invention includes a camera bellows, a light source 510, a light source lens 520, a flow cell 530, a concave mirror 540, a grating 550, a diode array sensor 560, and a multi-slit switching structure; the light source 510, the light source lens 520, the flow cell 530, the concave reflector 540, the grating 550, the diode array sensor 560 and the multi-slit switching structure are all arranged in the dark box; light from the light source passes through the light source lens 520, the flow cell 530, the concave mirror 540, the multi-slit switching structure for detector, the grating 550, and the diode array sensor 560 in this order.
In particular, compared with the prior art, the detector provided with the embodiment of the present invention has the advantages of the multi-slit switching structure for the detector, and will not be described herein.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the technical solutions according to the embodiments of the present invention.
Claims (9)
1. A multi-slit switching structure for a detector, comprising: a support frame (100), a rotary driving member (200), a combined slit disk (300) and a slit mounting disk (400);
the rotary driving piece (200) is installed on the supporting frame (100), the slit installation plate (400) is in transmission connection with the rotary driving piece (200), the combined slit plate (300) is installed on the slit installation plate (400), and the rotary driving piece (200) drives the combined slit plate (300) to swing.
2. The multi-slit switching structure for a detector of claim 1, wherein the slit mounting plate (400) includes a connection base (410), a connection rod (420), and a mounting frame (430) for carrying the combined slit plate (300);
the mounting frame (430) is connected with the connecting base (410) through the connecting rod (420);
the connection base (410) is mounted on the output shaft of the rotary drive (200).
3. The multi-slit switching structure for a detector according to claim 2, wherein the connection base (410) is semicircular, and a top plane of the connection base (410) is connected to the connection rod (420).
4. The multi-slit switching structure for a detector according to claim 2, wherein the support frame (100) is provided with at least two limit levers (110) for limiting the swing range of the connecting rod (420), and both sides of the connecting rod (420) are provided with the limit levers (110).
5. The multi-slit switching structure for a detector according to claim 2, wherein the combined slit disk (300) includes a disk body (310), and a plurality of slits (320) are formed on the disk body (310);
the tray body (310) is mounted on the mounting frame (430).
6. The multi-slit switching structure for a detector according to claim 5, wherein a plurality of the slits (320) are uniformly distributed on the disk body (310), and the plurality of the slits (320) are sequentially increased in size, and the plurality of the slits (320) are connected in a circular arc shape.
7. The multi-slit switching structure for a detector according to claim 6, wherein a plurality of the slits (320) are uniformly distributed on the disk body (310) with an axis of the rotary driving member (200) as a center line.
8. A multi-slit switching structure for a detector as claimed in any one of claims 1 to 7, wherein said support frame (100) employs a support plate.
9. The multi-slit switching structure for a detector according to any one of claims 1 to 7, wherein said rotary driving member (200) employs a stepping motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310700474.6A CN116429959A (en) | 2023-06-14 | 2023-06-14 | Multi-slit switching structure for detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310700474.6A CN116429959A (en) | 2023-06-14 | 2023-06-14 | Multi-slit switching structure for detector |
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| Publication Number | Publication Date |
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| CN116429959A true CN116429959A (en) | 2023-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310700474.6A Pending CN116429959A (en) | 2023-06-14 | 2023-06-14 | Multi-slit switching structure for detector |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1118969A (en) * | 1965-10-27 | 1968-07-03 | Parsons & Co Sir Howard G | Improvements in and relating to monochromators |
| GB8327842D0 (en) * | 1982-10-29 | 1983-11-16 | Shimadzu Corp | Slit mechanism in monochromator |
| JPH06194230A (en) * | 1993-09-01 | 1994-07-15 | Shimadzu Corp | Spectrometer slit mechanism |
| JPH11241948A (en) * | 1998-02-26 | 1999-09-07 | Hitachi Ltd | Spectrometric apparatus |
| WO1999063311A1 (en) * | 1998-06-04 | 1999-12-09 | Raytheon Company | Multi-slit imaging spectrometer |
| WO2012147551A1 (en) * | 2011-04-27 | 2012-11-01 | 株式会社日立ハイテクノロジーズ | Spectrophotometer and method for determining slit conditions thereof |
| US20150144766A1 (en) * | 2013-11-26 | 2015-05-28 | Nec Corporation | Control apparatus and control method |
| EP3124066A1 (en) * | 2014-03-26 | 2017-02-01 | Terumo Kabushiki Kaisha | Liquid-drug administration device |
| CN206847781U (en) * | 2017-05-16 | 2018-01-05 | 中国电子科技集团公司第四十一研究所 | A kind of slit plate, double variable gap devices using the slit plate |
| CN107843340A (en) * | 2017-10-31 | 2018-03-27 | 中国科学院国家天文台南京天文光学技术研究所 | Multichannel slit rotary switching device for multi objects fiber spectrograph |
| CN110057752A (en) * | 2019-05-10 | 2019-07-26 | 上海安杰环保科技股份有限公司 | A kind of slit plate for gas phase molecular absorption spectrometer |
| CN214149581U (en) * | 2020-11-17 | 2021-09-07 | 北京信息科技大学 | Portable spectrometer capable of switching slits |
-
2023
- 2023-06-14 CN CN202310700474.6A patent/CN116429959A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1118969A (en) * | 1965-10-27 | 1968-07-03 | Parsons & Co Sir Howard G | Improvements in and relating to monochromators |
| GB8327842D0 (en) * | 1982-10-29 | 1983-11-16 | Shimadzu Corp | Slit mechanism in monochromator |
| JPH06194230A (en) * | 1993-09-01 | 1994-07-15 | Shimadzu Corp | Spectrometer slit mechanism |
| JPH11241948A (en) * | 1998-02-26 | 1999-09-07 | Hitachi Ltd | Spectrometric apparatus |
| WO1999063311A1 (en) * | 1998-06-04 | 1999-12-09 | Raytheon Company | Multi-slit imaging spectrometer |
| WO2012147551A1 (en) * | 2011-04-27 | 2012-11-01 | 株式会社日立ハイテクノロジーズ | Spectrophotometer and method for determining slit conditions thereof |
| US20150144766A1 (en) * | 2013-11-26 | 2015-05-28 | Nec Corporation | Control apparatus and control method |
| JP2015102465A (en) * | 2013-11-26 | 2015-06-04 | 日本電気株式会社 | Slit width changing device and method, and spectrum output device |
| EP3124066A1 (en) * | 2014-03-26 | 2017-02-01 | Terumo Kabushiki Kaisha | Liquid-drug administration device |
| CN206847781U (en) * | 2017-05-16 | 2018-01-05 | 中国电子科技集团公司第四十一研究所 | A kind of slit plate, double variable gap devices using the slit plate |
| CN107843340A (en) * | 2017-10-31 | 2018-03-27 | 中国科学院国家天文台南京天文光学技术研究所 | Multichannel slit rotary switching device for multi objects fiber spectrograph |
| CN110057752A (en) * | 2019-05-10 | 2019-07-26 | 上海安杰环保科技股份有限公司 | A kind of slit plate for gas phase molecular absorption spectrometer |
| CN214149581U (en) * | 2020-11-17 | 2021-09-07 | 北京信息科技大学 | Portable spectrometer capable of switching slits |
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