CN211263171U

CN211263171U - Double-beam spectrophotometer detection light path structure

Info

Publication number: CN211263171U
Application number: CN201922408008.2U
Authority: CN
Inventors: 黄斌; 包欣欣
Original assignee: Wuxi Hongya Intelligent Technology Co ltd
Current assignee: Wuxi Hongya Intelligent Technology Co ltd
Priority date: 2019-12-28
Filing date: 2019-12-28
Publication date: 2020-08-14
Anticipated expiration: 2029-12-28

Abstract

The utility model discloses a double-beam spectrophotometer detects light path structure. The utility model provides a pair of double-beam spectrophotometer detects light path structure, include: photometer device box, the light source, the beam splitter, first light source sieve separator subassembly, the sample absorption cell, first detector, second light source sieve separator and second detector, first light source sieve separator subassembly includes first light source sieve separator, and a support, switch, the apparatus further comprises a rotating shaft, driven gear, the driving gear, step motor, the motor frame, step motor driver and step motor controller, accessible step motor drives first light source sieve separator and rotates to a plurality of detection positions, carry out multiple screening and detection through different light source sieve separator units, obtain multiunit detected data, be convenient for utilize multiunit data to contrast, the sample detection light of selecting through single light source sieve separator that avoids single light source sieve separator to lead to detects the light as best sample detection light, there is inaccurate problem in the result.

Description

Double-beam spectrophotometer detection light path structure

Technical Field

The utility model relates to a spectrophotometer technical field, concretely relates to double beam spectrophotometer detects light path structure.

Background

A spectrophotometer, also called a spectrometer (spectrometer), is a scientific instrument that decomposes light with complex components into spectral lines. The measurement range generally comprises a visible light region with a wavelength range of 380-780 nm and an ultraviolet light region with a wavelength range of 200-380 nm. Different light sources have their own emission spectra, so that different illuminants can be used as the light source for the instrument. Emission spectrum of tungsten lamp: after spectral light with the wavelength of 380-780 nm emitted by a tungsten lamp light source is refracted by a prism, a continuous chromatogram consisting of red, orange, yellow, green, blue, indigo and purple can be obtained; the color spectrum can be used as a light source of a visible spectrophotometer. A dual beam spectrophotometer is a spectrophotometer that analyzes a sample by passing one of two beams of light through the sample and the other beam through a reference solution. Compared with a single beam, the double-beam spectrophotometer can overcome the influences of instability of a light source, certain impurity interference factors and the like, and can detect the change of a sample along with time.

Patent No. CN 204694628U discloses a proportional dual-beam spectrophotometer device, which includes a light source, and a reference detection light path and a sample detection light path that are perpendicular to each other and formed by a beam splitter, wherein the light source is a monochromatic light source, and the sample detection light path includes a first light source screening device, a sample absorption cell and a first detector that are sequentially arranged behind the beam splitter along the light emitting direction of the sample; the reference detection light path comprises a second light source screener and a second detector which are arranged above the beam splitter in sequence along the emission direction of the reference light.

In the above-mentioned proportional dual-beam spectrophotometer device, the sample detection light passes through the first light source screening device according to the original route to screen out the optimal sample detection light, and the optimal sample detection light passes through the sample absorption cell and then enters the first detector to be detected, however, the first light source screening device of the light path where the sample is located is a fixed single light source screening device, and due to the reasons of its own quality and the like, the sample detection light screened out by only the single light source screening device is taken as the optimal sample detection light, and the result is inaccurate, so there is a need to provide a dual-beam spectrophotometer detection light path structure to solve the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a double beam spectrophotometer detects light path structure to the sample that only selects through single light source screener among the solution prior art detects light as the best sample, and there is unsafe possible problem in the result.

The utility model provides a double-beam spectrophotometer detects light path structure, include: the device comprises a photometer device box body, wherein a light source, a beam splitter, a first light source screener component, a sample absorption cell, a first detector, a second light source screener and a second detector are arranged in the photometer device box body; the light source, the beam splitter, the first light source screener component, the sample absorption cell and the first detector are sequentially arranged in a first straight line, the beam splitter, the second light source screener and the second detector are sequentially arranged in a second straight line, and the first straight line is perpendicular to the second straight line;

the first light source screening device assembly comprises a first light source screening device, a support, a power switch, a rotating shaft, a driven gear, a driving gear, a stepping motor, a motor frame, a stepping motor driver and a stepping motor controller;

the support is fixed on the photometer device box body, the first light source screener comprises an outer frame, the outer frame is rotatably connected to the top of the support through a rotating shaft, the driven gear is arranged on the rotating shaft, the motor frame, the stepping motor driver and the stepping motor controller are sequentially arranged on the motor frame from top to bottom, the motor frame is positioned on one side of the support, the driving gear is arranged on an output shaft of the stepping motor, and the driving gear is meshed with the driven gear; the outer frame is provided with four light source screening units which are uniformly distributed by taking the rotating shaft as a center, wherein one light source screening unit is positioned between the beam splitter and the sample absorption pool;

the power switch is electrically connected with the stepping motor controller, the stepping motor controller is electrically connected with the stepping motor driver, and the stepping motor driver is electrically connected with the stepping motor.

Optionally, an elastic sheet fixing block is arranged on the front side of the support, an elastic sheet is arranged on the elastic sheet fixing block, an elastic sheet clamping groove is formed in one side of the outer frame corresponding to each light source screening unit, and the elastic sheet is clamped in the elastic sheet clamping groove.

Optionally, the support includes a bottom plate, a stand column disposed on the bottom plate, and a screw connected between the bottom plate and the photometer device box, the stand column is respectively located at two sides of the outer frame, and the rotating shaft is rotatably connected to the stand column.

Optionally, the upright column includes two parallel vertical plates and an annular portion connected to the tops of the vertical plates, and the rotating shaft is disposed inside the annular portion.

Optionally, the stepping motor is a 57HBP76AL4-TK0 two-phase hybrid stepping motor, the stepping motor driver is a ZD-2HD330 performance two-phase stepping motor driver, and the stepping motor controller is a CS10-1S fixed length stepping motor controller.

The utility model discloses following beneficial effect has:

the utility model provides a pair of double-beam spectrophotometer detects light path structure, include: the photometer device box is internally provided with a light source, a beam splitter, a first light source screener component, a sample absorption pool, a first detector, a second light source screener and a second detector, wherein the first light source screener component comprises a first light source screener, a bracket, a power switch, a rotating shaft, a driven gear, a driving gear, a stepping motor, a motor frame, a stepping motor driver and a stepping motor controller, the first light source screener can be driven to rotate to a plurality of detection positions by the stepping motor during use, multiple screening and detection are carried out by different light source screening units to obtain a plurality of groups of detection data, so that the comparison of the plurality of groups of data is convenient, the problem that the sample detection light screened by the single light source screener is used as the optimal sample detection light due to the self-quality and other reasons of the single light source screener is avoided, the results are inaccurate.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is the utility model provides a pair of two beam spectrophotometer detection light path structure's whole schematic diagram.

Fig. 2 is a schematic diagram of positions of components of a detection light path structure of a dual-beam spectrophotometer according to the present invention.

Fig. 3 is the utility model provides a pair of two beam spectrophotometer detection light path structure's first light source sieve separator sketch map.

Fig. 4 is the utility model provides a pair of two beam spectrophotometer detection light path structure's flexure strip sketch map.

Fig. 5 is a connection block diagram of the stepping motor of the detection light path structure of the dual-beam spectrophotometer provided by the present invention.

Illustration of the drawings: 1-a photometer device housing; 2-a light source; 3-a beam splitter; 4-a first light source screener assembly; 5-sample absorption cell; 6-a first detector; 7-a second light source screener; 8-a second detector; 41-a first light source screener; 42-a scaffold; 44-power switch; 45-a rotating shaft; 46-a driven gear; 47-a drive gear; 48-a stepper motor; 49-motor frame; 9-a stepper motor driver; 10-a stepper motor controller; 411-outer frame; 412-light source screening unit; 43-spring plate fixing block; 431-an elastic sheet; 413-spring clip groove; 421-a bottom plate; 422-upright column; 423-screw; 4221-standing plate; 4222-ring section.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, the thicknesses of layers and regions are exaggerated for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Referring to fig. 1 to 5, an embodiment of the present invention provides a light path structure for a dual-beam spectrophotometer, including: the device comprises a photometer device box body 1, wherein a light source 2, a beam splitter 3, a first light source screener component 4, a sample absorption pool 5, a first detector 6, a second light source screener 7 and a second detector 8 are arranged in the photometer device box body 1; light source 2, beam splitter 3, first light source screening ware subassembly 4, sample absorption cell 5 and first detector 6 are first straight line and set gradually, and beam splitter 3, second light source screening ware 7 and second detector 8 are second straight line and set gradually, and first straight line is perpendicular with the second straight line. The light source 2 is a monochromatic light source.

The first light source screening device assembly 4 includes a first light source screening device 41, a bracket 42, a power switch 44, a rotating shaft 45, a driven gear 46, a driving gear 47, a stepping motor 48, a motor frame 49, a stepping motor driver 9, and a stepping motor controller 10. In this embodiment, the stepping motor 48 is a 57HBP76AL4-TK0 two-phase hybrid stepping motor, the stepping motor driver 9 is a ZD-2HD330 performance two-phase stepping motor driver, and the stepping motor controller 10 is a CS10-1S fixed-length stepping motor controller.

The bracket 42 is fixed on the photometer device box 1, the first light source screener 41 comprises an outer frame 411, the outer frame 411 is rotatably connected to the top of the bracket 42 through a rotating shaft 45, a driven gear 46 is arranged on the rotating shaft 45, a motor frame 49, a stepping motor driver 9 and a stepping motor controller 10 are sequentially arranged on the motor frame 49 from top to bottom, the motor frame 49 is positioned on one side of the bracket 42, a driving gear 47 is arranged on an output shaft of a stepping motor 48, and the driving gear 47 is meshed with the driven gear 46; the outer frame 411 is provided with four light source screening units 412, and a plurality of light source screening units 412 are uniformly distributed around the rotating shaft 45, wherein one light source screening unit 412 is located between the beam splitter 3 and the sample absorption cell 5.

The power switch 44 is electrically connected to the stepping motor controller 10, the stepping motor controller 10 is electrically connected to the stepping motor driver 9, and the stepping motor driver 9 is electrically connected to the stepping motor 48.

The front side of the bracket 42 is provided with a spring fixing block 43, the spring fixing block 43 is provided with an elastic sheet 431, one side of the outer frame 411 corresponding to each light source screening unit 412 is provided with a spring clamping groove 413, and the elastic sheet 431 is clamped in the spring clamping groove 413.

Specifically, the support 42 includes a bottom plate 421, a pillar 422 disposed on the bottom plate 421, and a screw 423 connected between the bottom plate 421 and the photometer device case 1, the pillar 422 is respectively disposed on two sides of the outer frame 411, and the rotating shaft 45 is rotatably connected to the pillar 422. The upright 422 comprises two parallel vertical plates 4221 and a ring part 4222 connected to the top of the vertical plate 4221, and the rotating shaft 45 is arranged inside the ring part 4222.

The utility model discloses a double-beam spectrophotometer detects light path structure's theory of operation as follows:

firstly, a beam of monochromatic light is emitted from the light source 2, and is divided into two light beams, namely, a sample detection light and a reference detection light, by the beam splitter 3, the sample detection light is screened out by one of the light source screening units 412 according to the original route, and the optimal sample detection light enters the first detector 6 for detection after passing through the sample absorption cell 5. The reference detection light is formed by reflecting monochromatic light by the beam splitter at 90 degrees, is vertical to the direction of the original light path, and enters the second detector 8 for detection after being screened by the second light source screener 7. After the first data is obtained, the power switch 44 can control the stepping motor controller 10 to send pulses, the stepping motor driver 9 receives pulse signals and converts the pulse signals into angular displacement of the stepping motor, the stepping motor 48 is finally controlled to convert the electrical pulse signals into the angular displacement or the linear displacement, the driving gear 47 drives the driven gear 46 to rotate, the outer frame 411 is driven to rotate by the angle of one light source screening unit 412, the elastic sheet 431 is clamped in the elastic sheet clamping groove 413 to realize positioning, another measurement is carried out, four groups of data can be obtained by switching over the four light source screening units 412 at most, and sufficient data basis is provided for processing, analyzing and judging detection results.

To sum up, the utility model discloses accessible step motor drives first light source screening washer and rotates to a plurality of detection positions when using, carries out screening and detection many times through the light source screening unit of difference, obtains multiunit detected data to be convenient for utilize multiunit data to contrast, avoid because reasons such as single light source screening washer self quality, the sample that leads to selecting through single light source screening washer detects the light as best sample, and there is unsafe problem as a result.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application 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 application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A dual beam spectrophotometer detection path structure, comprising: the device comprises a photometer device box body (1), wherein a light source (2), a beam splitter (3), a first light source screener component (4), a sample absorption pool (5), a first detector (6), a second light source screener (7) and a second detector (8) are arranged in the photometer device box body (1); the light source (2), the beam splitter (3), the first light source screener component (4), the sample absorption cell (5) and the first detector (6) are sequentially arranged in a first straight line, the beam splitter (3), the second light source screener (7) and the second detector (8) are sequentially arranged in a second straight line, and the first straight line is perpendicular to the second straight line;

the first light source screening device assembly (4) comprises a first light source screening device (41), a support (42), a power switch (44), a rotating shaft (45), a driven gear (46), a driving gear (47), a stepping motor (48), a motor frame (49), a stepping motor driver (9) and a stepping motor controller (10);

the support (42) is fixed on the photometer device box body (1), the first light source screener (41) comprises an outer frame (411), the outer frame (411) is rotatably connected to the top of the support (42) through a rotating shaft (45), a driven gear (46) is arranged on the rotating shaft (45), a motor frame (49), a stepping motor driver (9) and a stepping motor controller (10) are sequentially arranged on the motor frame (49) from top to bottom, the motor frame (49) is positioned on one side of the support (42), a driving gear (47) is arranged on an output shaft of a stepping motor (48), and the driving gear (47) is meshed with the driven gear (46); four light source screening units (412) are arranged on the outer frame (411), the light source screening units (412) are uniformly distributed by taking the rotating shaft (45) as a center, and one light source screening unit (412) is positioned between the beam splitter (3) and the sample absorption cell (5);

the power switch (44) is electrically connected with the stepping motor controller (10), the stepping motor controller (10) is electrically connected with the stepping motor driver (9), and the stepping motor driver (9) is electrically connected with the stepping motor (48).

2. The structure of a detection light path of a dual-beam spectrophotometer according to claim 1, wherein a spring fixing block (43) is disposed at a front side of the support (42), an elastic sheet (431) is disposed on the spring fixing block (43), a spring clamping groove (413) is disposed at a side of the outer frame (411) corresponding to each light source screening unit (412), and the elastic sheet (431) is clamped in the spring clamping groove (413).

3. The structure of a detection light path of a dual-beam spectrophotometer according to claim 2, wherein the bracket (42) comprises a bottom plate (421), a pillar (422) disposed on the bottom plate (421), and a screw (423) connected between the bottom plate (421) and the photometer device case (1), the pillars (422) are respectively disposed on two sides of the outer frame (411), and the rotating shaft (45) is rotatably connected with the pillar (422).

4. A dual beam spectrophotometer detection light path structure according to claim 3, characterized in that said upright (422) comprises two parallel arranged risers (4221) and a ring portion (4222) connected to the top of said risers (4221), said spindle (45) is arranged inside said ring portion (4222).

5. The structure of the detection light path of a dual-beam spectrophotometer according to claim 4, wherein the stepper motor (48) is a 57HBP76AL4-TK0 two-phase hybrid stepper motor, the stepper motor driver (9) is a ZD-2HD330 performance two-phase stepper motor driver, and the stepper motor controller (10) is a CS10-1S fixed length type stepper motor controller.