Spectral analysis sample table driven and rotated by synchronous belt

Abstract

The utility model relates to a spectrum analysis sample table driven and rotated by a synchronous belt, which comprises a support frame, a circular optical filter and a rotary sample table mechanism are arranged on the support frame, and a light source detector mechanism is arranged at the bottom of the support frame and below the circular optical filter; the rotating sample table mechanism comprises a bearing seat installed on the top of the supporting frame, a bearing is installed in the bearing seat, a rotating sample wheel is installed in the bearing, the rotating sample table mechanism further comprises a stepping motor installed at the bottom of the supporting frame, a rotating shaft of the stepping motor is connected with a driving belt wheel, and a synchronous belt is wound between the driving belt wheel and the rotating sample wheel. A step is arranged at the lower end of the inner wall of the rotary sample wheel. According to the utility model, the adverse effect of poor repeatability of collected spectrum diffuse reflection signals caused by non-uniform particle size distribution of solid particle samples can be eliminated to a certain extent, and the consistency of the signals collected by a spectrum instrument is ensured; in addition, a rotary transmission mode of synchronous belt transmission is adopted, noise is reduced, and operation is smoother.

Description

Technical Field

[0001] The utility model relates to the technical field of optical detection, in particular to a spectrum analysis sample table driven and rotated by a synchronous belt. Background Art

[0002] Near-infrared spectroscopy, a rapid, non-destructive technique for detecting organic components, has applications in agriculture, food, medicine, beverages, fermentation, and chemical engineering. It offers the advantages of qualitative and quantitative analysis, simultaneous analysis of multiple indicators, and environmental friendliness. Furthermore, due to the excellent transmission characteristics of near-infrared light in optical fibers, its simple instrumentation, minimal sample preparation, and suitability for analyzing a wide range of samples (clear liquids, suspensions, powders, and solid particles), it has brought irreplaceable economic benefits to both industrial production and scientific research.

[0003] The types of near-infrared instruments mainly include laboratory benchtop, field portable, industrial online, micro wearable and other application scenarios. From the perspective of spectral signal acquisition, they are divided into transmission detection and diffuse reflection detection. The hardware composition and software design of near-infrared equipment suitable for different scenarios are somewhat different. Developing relatively highly adaptable measuring devices for materials of different forms is of great practical value for obtaining more accurate and stable analysis results.

[0004] Solid particulate materials have different particle sizes, which poses a challenge to the repeatability of near-infrared spectroscopy measurements. Most near-infrared devices generally use a relatively simple gear transmission to drive the measurement platform to rotate to eliminate the adverse effects of material unevenness. However, it is impossible to avoid the hard friction problem caused by the failure of lubricating oil after long-term use of the gear transmission, which generates a lot of noise. Utility Model Content

[0005] The utility model aims to solve the deficiencies of the prior art and provides a spectrum analysis sample table which is rotated by a synchronous belt drive.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0007] A spectrum analysis sample stage driven by a synchronous belt, comprising a support frame, a circular filter mounted on the support frame, a rotating sample stage mechanism mounted on the support frame, and a light source detector mechanism mounted on the bottom of the support frame below the circular filter;

[0008] The rotating sample stage mechanism includes a bearing seat mounted on the top of the support frame, the bearing seat and the circular filter are arranged coaxially, a bearing is mounted in the bearing seat, a rotating sample wheel is mounted in the bearing, and a stepper motor is mounted at the bottom of the support frame, the rotating shaft of the stepper motor passes through the top of the support frame and is connected to a driving pulley, a synchronous belt is wound between the driving pulley and the rotating sample wheel, and a stepped platform is provided at the lower end of the inner wall of the rotating sample wheel, and the stepped platform is used to place the sample bottle;

[0009] The light source detector mechanism includes a light source module and a detector module.

[0010] The support frame comprises a support platform, a plurality of L-shaped support columns are arranged at the bottom of the support platform, and connection holes are opened on the horizontal plates of the L-shaped support columns.

[0011] The light source detector mechanism includes a light source fixing plate arranged directly below the circular filter, the light source fixing plate is fixed to the bottom of the support table, a light source fixing seat is provided at the bottom of the light source fixing plate, a light source cover is provided at the bottom of the light source fixing seat, a light source is installed in the light source fixing seat, the light of the light source is irradiated vertically upward, a detector fixing plate is connected to one side of the light source fixing plate, and a circuit fixing plate, a circuit board and a detector are sequentially provided on the surface of the detector fixing plate, the optical fiber head of the detector is set at an angle of ° to the light irradiation direction of the light source, an optical fiber head fixing block is provided at the bottom of the light source fixing plate corresponding to the optical fiber head of the detector, and through holes are provided on the light source fixing plate corresponding to the light source and the detector.

[0012] The beneficial effects of the present invention are as follows: the present invention can, to a certain extent, eliminate the adverse effects of poor repeatability of diffuse reflectance signals collected from spectral samples caused by uneven particle size distribution of the solid particle sample itself, thereby ensuring the consistency of signals collected by the spectral instrument; in addition, the use of a rotating transmission method of synchronous belt drive reduces noise and makes the operation smoother; the entire device has a compact structural design, is economical and convenient to manufacture, and is suitable for integration into portable spectral instruments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of one direction of the utility model;

[0014] Figure 2 This is a structural diagram of another direction of the utility model;

[0015] Figure 3 It is a structural schematic diagram of the light source detector mechanism in one direction;

[0016] Figure 4 It is a structural diagram of the light source detector mechanism in another direction;

[0017] In the figure: 1-support frame; 2-circular filter; 3-rotating sample stage mechanism; 4-light source detector mechanism;

[0018] 11-supporting plate; 12-L-shaped supporting column; 13-connecting hole;

[0019] 31-bearing seat; 32-bearing; 33-rotating sample wheel; 34-stepping motor; 35-driving pulley; 36-synchronous belt; 37-step platform;

[0020] 41 - Light source fixing plate; 42 - Light source fixing seat; 43 - Light source cover; 44 - Light source; 45 - Detector fixing plate; 46 - Circuit fixing plate; 47 - Circuit board; 48 - Detector; 49 - Fiber head fixing block; 410 - Through hole; 411 - Heat insulation block;

[0021] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples provided are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are all in a very simplified form and are not to exact proportions, and are only used to facilitate and clearly illustrate the embodiments of the present invention.

[0023] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0026] like Figures 1 to 4As shown, a synchronous belt driven rotating spectral analysis sample stage includes a support frame 1, a circular filter 2 is mounted on the support frame 1, a rotating sample stage mechanism 3 is mounted on the support frame 1, and a light source detector mechanism 4 is mounted on the bottom of the support frame 1 below the circular filter 2;

[0027] The rotating sample stage mechanism 3 includes a bearing seat 31 mounted on the top of the support frame 1. The bearing seat 31 is arranged coaxially with the circular filter 2. A bearing 32 is mounted in the bearing seat 31. A rotating sample wheel 33 is mounted in the bearing 32. The rotating sample stage mechanism 3 also includes a stepping motor 34 mounted at the bottom of the support frame 1. The rotating shaft of the stepping motor 34 passes through the top of the support frame 1 and is connected to a driving pulley 35. A synchronous belt 36 is wound between the driving pulley 35 and the rotating sample wheel 33. A stepped platform 37 is provided at the lower end of the inner wall of the rotating sample wheel 33. The stepped platform 37 is used to place sample bottles.

[0028] The light source detector mechanism 4 includes a light source module and a detector module.

[0029] The support frame 1 includes a support platform 11 , a plurality of L-shaped support columns 12 are provided at the bottom of the support platform 11 , and connection holes 13 are opened on the horizontal plates of the L-shaped support columns 12 .

[0030] The light source detector mechanism 4 includes a light source fixing plate 41 arranged directly below the circular filter 2, the light source fixing plate 41 is fixed to the bottom of the support table 11, a light source fixing seat 42 is provided at the bottom of the light source fixing plate 41, a light source cover 43 is provided at the bottom of the light source fixing seat 42, a light source 44 is installed in the light source fixing seat 42, and the light of the light source 44 is irradiated vertically upward, a detector fixing plate 45 is connected to one side of the light source fixing plate 41, and a circuit fixing plate 46, a circuit board 47 and a detector 48 are provided on the surface of the detector fixing plate 45 in sequence, the optical fiber head of the detector 48 is set at an angle of 45° to the light irradiation direction of the light source 44, and an optical fiber head fixing block 49 is provided at the bottom of the light source fixing plate 41 corresponding to the optical fiber head of the detector 48, and a through hole 410 is opened on the light source fixing plate 41 corresponding to the light source 44 and the detector 48.

[0031] A heat insulation block 411 is provided between the bottom of the light source fixing plate 41 and the optical fiber head fixing block 49 .

[0032] Heat dissipation fins are provided on the outer wall of the light source fixing base 42 .

[0033] When the present invention is working, the stepper motor 34 fixed on the support plate 11 drives the active pulley 35 to rotate under the action of the driving instruction, and the active pulley 35 drives the rotating sample wheel 33 to complete the rotation action through the synchronous belt 36, and combines with the light source detector mechanism 4 to complete the corresponding sample spectrum collection work.

[0034] The utility model can, to a certain extent, eliminate the adverse effect of poor repeatability of the collected spectral diffuse reflection signal caused by the uneven particle size distribution of the solid particle sample itself, and ensure the consistency of the signal collected by the spectral instrument; in addition, the rotary transmission method of the synchronous belt 36 is adopted to replace the traditional gear transmission method, which can effectively reduce the noise caused by insufficient lubrication of the gear transmission or hard friction of the gear meshing after long-term use; the entire device has a compact structure design, is economical and convenient to manufacture, and is very suitable for integration into a portable spectral instrument.

[0035] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or they are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A spectrum analysis sample stage driven by a synchronous belt, characterized in that: The invention comprises a support frame (1), a circular filter (2) is mounted on the support frame (1), a rotating sample stage mechanism (3) is mounted on the support frame (1), and a light source detector mechanism (4) is mounted on the bottom of the support frame (1) below the circular filter (2); The rotating sample stage mechanism (3) includes a bearing seat (31) mounted on the top of the support frame (1), the bearing seat (31) and the circular filter (2) are arranged coaxially, a bearing (32) is mounted in the bearing seat (31), a rotating sample wheel (33) is mounted in the bearing (32), and a stepping motor (34) is mounted on the bottom of the support frame (1), the rotating shaft of the stepping motor (34) passes through the top of the support frame (1) and is connected to a driving pulley (35), a synchronous belt (36) is wound between the driving pulley (35) and the rotating sample wheel (33), and a stepped platform (37) is provided at the lower end of the inner wall of the rotating sample wheel (33), and the stepped platform (37) is used to place a sample bottle; The light source detector mechanism (4) comprises a light source module and a detector module.

2. The spectral analysis sample stage driven by a synchronous belt according to claim 1, characterized in that: The support frame (1) comprises a support platform (11), a plurality of L-shaped support columns (12) are provided at the bottom of the support platform (11), and connection holes (13) are provided on the horizontal plates of the L-shaped support columns (12).

3. The spectrum analysis sample stage driven by synchronous belt rotation according to claim 2, characterized in that: The light source detector mechanism (4) comprises a light source fixing plate (41) arranged directly below the circular filter (2), the light source fixing plate (41) being fixed to the bottom of the support platform (11), a light source fixing seat (42) being provided at the bottom of the light source fixing plate (41), a light source cover plate (43) being provided at the bottom of the light source fixing seat (42), a light source (44) being installed in the light source fixing seat (42), the light of the light source (44) being irradiated vertically upward, a detector fixing plate (45) being connected to one side of the light source fixing plate (41), a circuit fixing plate (46), a circuit board (47) and a detector (48) being provided on the surface of the detector fixing plate (45) in sequence, the optical fiber head of the detector (48) being arranged at an angle of 45° to the direction of irradiation of the light of the light source (44), an optical fiber head fixing block (49) being provided at the bottom of the light source fixing plate (41) corresponding to the optical fiber head of the detector (48), and a through hole (410) being provided on the light source fixing plate (41) corresponding to the light source (44) and the detector (48).

4. The spectrum analysis sample stage driven by synchronous belt rotation according to claim 3, characterized in that: A heat insulation block (411) is provided between the bottom of the light source fixing plate (41) and the optical fiber head fixing block (49).

5. The spectrum analysis sample stage driven by synchronous belt rotation according to claim 4, characterized in that: Heat dissipation fins are provided on the outer wall of the light source fixing seat (42).

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