CN210690503U

CN210690503U - Liquid chromatography detection device

Info

Publication number: CN210690503U
Application number: CN201920689601.6U
Authority: CN
Inventors: 王固霞; 郭生伟; 王梁
Original assignee: North Minzu University
Current assignee: North Minzu University
Priority date: 2019-05-15
Filing date: 2019-05-15
Publication date: 2020-06-05
Anticipated expiration: 2029-05-15

Abstract

The utility model discloses a liquid chromatogram detection device, which comprises an outer shell, be provided with the laser instrument on the inner wall of shell, the side of laser instrument has set gradually lens one, preceding excitation light filter, back excitation light filter, lens two and reflector, the side below of reflector is provided with the grating, the side of grating is provided with sample flow cell and spectrum appearance respectively, the top from the bottom up of sample flow cell has set gradually lens three, emission light filter and photomultiplier, preceding excitation light filter and back excitation light filter all fix the top at the carousel, the bottom of carousel and gear motor's output shaft fixed connection, gear motor fixes the top at the lead screw cover, the lead screw cover is established on the lead screw. The utility model discloses a set up grating, carousel, gear motor, lead screw cover, guide rail and lead screw, solved traditional liquid chromatogram detection device light source wavelength and be difficult to detect the regulation, detect the relatively poor problem of accuracy nature.

Description

Liquid chromatography detection device

Technical Field

The utility model relates to a check out test set technical field specifically is a liquid chromatogram detection device.

Background

Liquid chromatography is a separation and analysis technology, and is characterized in that liquid is used as a mobile phase, a stationary phase can have various forms, such as paper, a thin plate, a packed bed and the like, in the development process of the chromatography technology, in order to distinguish various methods, respective names are generated according to the forms of the stationary phase, such as paper chromatography, thin layer chromatography and column liquid chromatography, the wavelength of a light source of the existing liquid chromatography detection device is difficult to adjust, and the detection accuracy is also poor, so the utility model discloses a liquid chromatography detection device to solve the problems.

Through retrieval, chinese patent No. CN208270500U, granted bulletin 2018.12.21 discloses a liquid chromatography detection device, comprising: the utility model discloses a flow cell, the light emitting diode, refer to sensor, liquid import, liquid export, light filter, actual measurement sensor, flow cell, convex mirror, the utility model discloses a flow cell is equipped with the convex mirror, has the light gathering effect, has increased light intensity; the flow cell is designed into a taper hole, so that light reflection is avoided, authenticity of data can be reflected better, the actually measured sensor is provided with the light filter to filter stray light, stability of light is guaranteed, and measured data are stable and accurate.

The detection device in the patent has the following defects:

1. the detection device has single optical filter and low detection accuracy;

2. the optical filter of the detection device is difficult to replace as required, and the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a liquid chromatogram detection device has solved traditional liquid chromatogram detection device light source wavelength and has been difficult to detect the regulation, detects the relatively poor problem of accuracy nature.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a liquid chromatography detection device comprises a shell, a laser is arranged on the inner wall of the shell, the side surface of the laser is sequentially provided with a first lens, a front excitation filter, a rear excitation filter, a second lens and a reflector, a grating is arranged below the side of the reflector, a sample flow cell and a spectrometer are respectively arranged on the side surface of the grating, a third lens, an emission filter and a photomultiplier are sequentially arranged above the sample flow cell from bottom to top, the front excitation optical filter and the rear excitation optical filter are both fixed at the top of the turntable, the bottom of the turntable is fixedly connected with an output shaft of the speed reducing motor, the speed reducing motor is fixed at the top of the screw rod sleeve, the screw rod sleeve is arranged on the screw rod, one end of the screw rod is fixedly connected with an output shaft of the screw rod motor through a coupler, and the other end of the screw rod is rotatably connected with the bearing seat.

Preferably, the front excitation optical filter and the rear excitation optical filter are both provided with two filters, and the two front excitation optical filters and the two rear excitation optical filters are respectively arranged on the top of the screw rod sleeve in parallel.

Preferably, the screw rod sleeve is also arranged on the guide rails in a sliding manner, two guide rails are arranged on the guide rails, and the two guide rails are symmetrically arranged on two sides of the screw rod.

Preferably, the bottom of the grating is also provided with a turntable, and the bottom of the turntable is also provided with a speed reduction motor.

Preferably, the number of the emission filters is two, and the two emission filters are arranged in parallel.

Preferably, the light transmitted by the lens passes through the centers of the front excitation filter and the rear excitation filter.

(III) advantageous effects

The utility model provides a liquid chromatogram detection device possesses following beneficial effect:

(1) the utility model discloses an arouse the light filter before setting up and arouse the light filter after with, thereby dual filtering has improved the device's the filterable precision of light wave.

(2) The utility model discloses an arouse the light filter after excitation light filter and two before setting up two, and arouse the light filter after and the filter wavelength range of arousing the light filter inequality before two, when arousing the light filter after and arousing the light filter before needs are changed, can start the lead screw motor, the lead screw motor drives the lead screw and rotates, the lead screw drives the lead screw cover and removes along the guide rail, thereby it arouses the light filter after and arouses the light filter to remove to the light path before driving another two on the lead screw cover, and the light filter is under gear motor's effect, it adjusts to carry out slight direction also, thereby the convenient change of light filter has improved the range of application of detector, but detection wavelength freely adjusts.

(3) The utility model discloses a set up the grating, the light that the laser instrument sent is handled through the grating for the laser that jets into the sample flow-through cell is specific excitation spectrum, improves the detection precision of spectrum appearance, and through setting up carousel and gear motor, makes the grating also be rotatable, thereby conveniently adjusts the work angle of grating.

Drawings

Fig. 1 is a top view of the present invention;

fig. 2 is a side view of the excitation filter of the present invention;

fig. 3 is a side view of the grating of the present invention.

The reference numbers in the figures are:

1. a housing; 2. a laser; 3. a first lens; 4. a front excitation filter; 5. post-excitation optical filter; 6. a second lens; 7. a reflective mirror; 8. a grating; 9. a sample flow cell; 10. a spectrometer; 11. a third lens; 12. an emission filter; 13. a photomultiplier tube; 14. a turntable; 15. a reduction motor; 16. a screw rod sleeve; 17. a guide rail; 18. a screw rod; 19. a screw motor; 20. and a bearing seat.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-3, the utility model provides a technical solution: a liquid chromatography detection device comprises a shell 1, a laser 2 is arranged on the inner wall of the shell 1, a first lens 3, a front excitation filter 4, a rear excitation filter 5, a second lens 6 and a reflector 7 are sequentially arranged on the side surface of the laser 2, light transmitted by the first lens 3 passes through the centers of the front excitation filter 4 and the rear excitation filter 5, a grating 8 is arranged below the side surface of the reflector 7, through the arrangement of the grating 8, light emitted by the laser 2 is processed by the grating 8, so that laser emitted into a sample flow cell 9 is a specific excitation spectrum, the detection precision of a spectrometer 10 is improved, a sample flow cell 9 and the spectrometer 10 are respectively arranged on the side surface of the grating 8, a third lens 11, an emission filter 12 and a photomultiplier 13 are sequentially arranged above the sample flow cell 9 from bottom to top, the emission filters 12 are provided with two, the two emission filters 12 are arranged in parallel, the front excitation optical filter 4 and the rear excitation optical filter 5 are both fixed at the top of the turntable 14, the bottom of the turntable 14 is fixedly connected with an output shaft of a speed reduction motor 15, the speed reduction motor 15 is fixed at the top of a screw rod sleeve 16, two front excitation optical filters 4 and two rear excitation optical filters 5 are both arranged, the two front excitation optical filters 4 and the two rear excitation optical filters 5 are respectively arranged at the top of the screw rod sleeve 16 in parallel, the filter wavelength ranges of the two front excitation optical filters 4 are different, the filter wavelength ranges of the two rear excitation optical filters 5 are different, the filter wavelength ranges of the front excitation optical filters 4 and the rear excitation optical filters 5 are the same, the screw rod sleeve 16 is sleeved on a screw rod 18, one end of the screw rod 18 is fixedly connected with the output shaft of a screw rod motor 19 through a coupler, the other end of the screw rod 18 is rotatably connected with a bearing block 20, the two guide rails 17 are symmetrically arranged on two sides of the screw rod 18, the bottom of the grating 8 is also provided with a turntable 14, and the bottom of the turntable 14 is also provided with a speed reducing motor 15.

The working principle is as follows: when the device is used, light emitted by a laser 2 sequentially passes through a lens I3, a front excitation filter 4, a rear excitation filter 5 and a lens II 6 to reach a reflector 7, is reflected to a grating 8 through the reflector 7, is reflected to a sample flow cell 9 through the grating 8, light from the sample flow cell 9 is subjected to detection wavelength through a spectrometer 10, a sample in the sample flow cell 9 generates fluorescence after being irradiated by laser, the fluorescence reaches a photomultiplier 13 through a lens III 11 and an emission filter 12 to be detected, the components and the content of substances in the sample are determined, the device is provided with the front excitation filter 4 and the rear excitation filter 5, double filtering improves the precision of light wave filtering of the device, the front excitation filter 4 and the rear excitation filter 5 are respectively provided with two filters, the filtering wavelength ranges of the two front excitation filters 4 and the rear excitation filter 5 are different, when the front excitation filter 4 and the rear excitation filter 5 need to be replaced, can start lead screw motor 19, lead screw motor 19 drives lead screw 18 and rotates, lead screw 18 drives lead screw cover 16 and moves along guide rail 17, thereby it excites filter 4 and back excitation filter 5 to remove to the light path before driving another two on the lead screw cover 16, and the filter is under gear motor 15's effect, slight direction control also can carry out, thereby the convenient change of filter has improved the range of application of detector, but the detection wavelength is free to be adjusted, through setting up grating 8, the light that laser instrument 2 sent passes through grating 8 and handles, make the laser of penetrating into sample flow-through cell 9 be specific excitation spectrum, improve the detection precision of spectrum appearance 10, and through setting up carousel 14 and gear motor 15, make grating 8 also rotatable, thereby conveniently adjust grating 8's working angle.

To sum up can, the utility model discloses a set up grating 8, carousel 14, gear motor 15, lead screw cover 16, guide rail 17 and lead screw 18, solved traditional liquid chromatogram detection device light source wavelength and be difficult to detect the regulation, detect the relatively poor problem of accuracy nature.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A liquid chromatography detection device, includes shell (1), its characterized in that: the laser device comprises a shell (1), and is characterized in that a laser device (2) is arranged on the inner wall of the shell (1), a first lens (3), a front excitation optical filter (4), a rear excitation optical filter (5), a second lens (6) and a reflective mirror (7) are sequentially arranged on the side surface of the laser device (2), an optical grating (8) is arranged below the side surface of the reflective mirror (7), a sample flow cell (9) and a spectrometer (10) are respectively arranged on the side surface of the optical grating (8), a third lens (11), an emission optical filter (12) and a photomultiplier (13) are sequentially arranged above the sample flow cell (9) from bottom to top, the front excitation optical filter (4) and the rear excitation optical filter (5) are both fixed on the top of a turntable (14), the bottom of the turntable (14) is fixedly connected with an output shaft of a speed reducing motor (15), the speed reducing motor (15) is fixed on, the screw rod sleeve (16) is sleeved on the screw rod (18), one end of the screw rod (18) is fixedly connected with an output shaft of a screw rod motor (19) through a coupler, and the other end of the screw rod (18) is rotatably connected with the bearing seat (20).

2. The liquid chromatography detection apparatus of claim 1, wherein: the front excitation filter (4) and the rear excitation filter (5) are respectively provided with two filters, and the two front excitation filters (4) and the two rear excitation filters (5) are respectively arranged on the top of the screw rod sleeve (16) in parallel.

3. The liquid chromatography detection apparatus of claim 1, wherein: the screw rod sleeve (16) is also arranged on the guide rails (17) in a sliding mode, two guide rails (17) are arranged, and the two guide rails (17) are symmetrically arranged on two sides of the screw rod (18).

4. The liquid chromatography detection apparatus of claim 1, wherein: the bottom of the grating (8) is also provided with a turntable (14), and the bottom of the turntable (14) is also provided with a speed reducing motor (15).

5. The liquid chromatography detection apparatus of claim 1, wherein: the number of the emission filters (12) is two, and the two emission filters (12) are arranged in parallel.

6. The liquid chromatography detection apparatus of claim 1, wherein: the light transmitted by the first lens (3) passes through the centers of the front excitation filter (4) and the rear excitation filter (5).