CN219284978U

CN219284978U - Ultra-micro ultraviolet spectrophotometer

Info

Publication number: CN219284978U
Application number: CN202222951102.4U
Authority: CN
Inventors: 张媛媛; 林威; 朱森
Original assignee: Primo Instruments Hangzhou Co ltd
Current assignee: Primo Instruments Hangzhou Co ltd
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-06-30
Anticipated expiration: 2032-11-03

Abstract

The utility model discloses an ultra-micro ultraviolet spectrophotometer, which comprises a light source, an incident optical fiber, an emergent optical fiber, an incident optical fiber connector, an emergent optical fiber connector, an upper rotating arm, a support, a control board, an optical receiver, a display screen, a semiconductor refrigerating plate, a heat conducting connecting plate and a radiator, wherein the incident optical fiber connector passes through the upper rotating arm, the end part of the incident optical fiber connector is exposed out of the upper rotating arm, the emergent optical fiber connector passes through the support, the end part of the emergent optical fiber connector forms a sample carrying table, the semiconductor refrigerating plate is electrically connected with the control board, the cold end of the semiconductor refrigerating plate is in heat conducting connection with the upper heat conducting connecting plate, the emergent optical fiber connector passes through the upper heat conducting connecting plate and is in heat conducting connection with the upper heat conducting connecting plate, and the hot end of the semiconductor refrigerating plate is in heat conducting connection with the radiator through a heat conducting connecting component. The utility model has novel structure, can reduce the solvent evaporation and concentration effect and the inactivation and denaturation degree of biological samples, and improves the detection accuracy.

Description

Ultra-micro ultraviolet spectrophotometer

Technical Field

The utility model relates to an ultraviolet spectrophotometer, in particular to an ultra-micro ultraviolet spectrophotometer.

Background

The working principle of the ultra-micro ultraviolet spectrophotometer is that the spectrophotometer is an instrument for quantitatively and qualitatively analyzing substances, which has the advantages of small volume of required samples, no need of cuvette, no need of preheating and the like, and is commonly used for quantitative protein and quantitative bacterial growth concentration.

For example, grant bulletin number: CN217385193U, chinese patent No. 2022, 9 and 6, discloses a sterilizable ultra-micro uv spectrophotometer comprising a body, a sample holder disposed on the body for holding a sample, a sample arm connected to the sample holder or the body and rotatable relative to the sample holder, a light source disposed on the body for emitting light, and a receiver with the light source disposed in the sample holder and the sample arm, respectively, and a sterilizing member disposed on the sample arm or the sample holder for sterilizing the sample holder and the sample arm, the sample arm forming a liquid column between the sample arm and the sample holder when rotated relative to the sample holder to be held against the sample holder; the receiver is used for receiving the light absorbed by the liquid column. The ultra-trace ultraviolet spectrophotometer has the following defects: (1) The first platform for holding the sample is in a normal temperature state, and the biological sample (especially the protein sample) held on the first platform is easy to be deformed (inactivated and denatured) due to instability at normal temperature, so that the detection value is deviated; (2) The first platform at normal temperature can accelerate volatilization of the droplet sample solvent, so that the sample concentration (concentration effect) during detection is concentrated, and the detection result is generally higher.

Disclosure of Invention

The utility model aims to solve the problems of the existing ultra-trace ultraviolet spectrophotometer, and provides the ultra-trace ultraviolet spectrophotometer which has a novel structure, can reduce the solvent evaporation and concentration effects and the inactivation and denaturation degree of biological samples and improve the detection accuracy.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model discloses an ultra-micro ultraviolet spectrophotometer which comprises a light source, an incident optical fiber, an emergent optical fiber, an incident optical fiber connector, an emergent optical fiber connector, an upper rotating arm, a support, a control board, a light receiver and a display screen, wherein the upper rotating arm is connected to the support in a damping rotation mode, two ends of the incident optical fiber are respectively connected with the light source and the incident optical fiber connector, two ends of the emergent optical fiber are respectively connected with the light receiver and the emergent optical fiber connector, the light receiver and the display screen are respectively connected with the control board in an electric connection and signal connection mode, the incident optical fiber connector penetrates through the upper rotating arm, the end portion of the incident optical fiber connector is exposed out of the upper rotating arm, the emergent optical fiber connector penetrates through the support, the end portion of the emergent optical fiber connector is exposed out of the support, the end portion of the emergent optical fiber connector forms a sample carrying table, a semiconductor refrigerating sheet, a heat conducting connecting plate and a radiator are electrically connected to the support, the cold end of the semiconductor refrigerating sheet is connected with the upper heat conducting connecting plate in a heat conducting mode, the emergent optical fiber connector penetrates through the upper heat conducting connecting plate and is connected with the upper heat conducting connecting plate in a heat conducting mode, and the heat conducting end of the semiconductor refrigerating sheet is connected with the radiator in a heat conducting mode. In order to solve the problem of inaccurate detection results caused by solvent evaporation and concentration effects and biological sample inactivation and denaturation, the utility model uses a semiconductor refrigeration sheet to refrigerate, and uses an indirect heat conduction mode to cool an emergent optical fiber joint for bearing a sample, so that a sample bearing table is kept at a lower temperature, the sample is kept at a low temperature, the volatilization of a solvent in the sample and the biological sample inactivation and denaturation are slowed down, the detection deviation is reduced, and after the detection is finished, the sample can be sucked by a suction pipe to recover the precious biological sample; the incident optical fiber connector and the emergent optical fiber connector can be SMA905 type connectors; the optical receiver is also called a detector and is used for converting an optical signal into an electrical signal; the heat conduction connecting component is used for transferring heat of the hot end of the semiconductor refrigerating sheet to the radiator so as to achieve the purpose of rapid heat dissipation; the cold end, the hot end, the heat conduction connecting component and the radiator in the semiconductor refrigerating sheet are arranged at intervals, so that the refrigerating effect is prevented from being influenced; the display screen may be a touch screen.

Preferably, the ultra-micro ultraviolet spectrophotometer further comprises a bottom plate and a shell, the display screen is arranged on the shell, the light source, the control panel, the light receiver, the emergent optical fiber, the heat conduction connecting component and the radiator are all arranged in the shell, the upper surface of the support is exposed to the upper surface of the shell, and the incident optical fiber penetrates through the shell.

Preferably, the heat conduction connecting assembly comprises a lower heat conduction connecting plate and a heat conduction connecting pipe, wherein the lower heat conduction connecting plate is in heat conduction connection with the hot end of the semiconductor refrigerating sheet, and two ends of the heat conduction connecting pipe are respectively in heat conduction connection with the lower heat conduction connecting plate and the radiator. The heat conduction connecting pipe can be a copper pipe, which has the heat conduction function and the function of supporting the lower heat conduction connecting plate.

Preferably, the radiator comprises an aluminum section radiating fin and a radiating fan, wherein the aluminum section radiating fin is arranged on the radiating fan, and the heat conduction connecting pipe is in heat conduction connection with the aluminum section radiating fin.

Preferably, the bottom plate is fixed with a support column, the top ends of the support columns positioned on the same side are fixed with fixing strips, and the support is fixed on the fixing strips.

Preferably, a limiting block is arranged on the upper rotating arm. The limiting block is used for limiting the upper rotating arm when the upper rotating arm is overturned to the upper side of the support, so that the incident optical fiber connector and the emergent optical fiber connector can keep vertical opposite and keep a fixed distance, and can be contacted with sample droplets to automatically form (pull into) a liquid column with fixed diameter and length.

Preferably, the light source is a xenon lamp.

Preferably, the upper heat conducting connecting plate is provided with a temperature sensor, and the temperature sensor is electrically connected with the control board and in signal connection with the control board.

Therefore, the utility model has the following beneficial effects:

(1) The outgoing optical fiber joint carrying the sample is cooled by the semiconductor refrigerating sheet 19 in an indirect heat conduction mode, so that the sample carrying table is kept at a lower temperature, the sample is kept at a low temperature (the temperature can be kept at about 4 ℃), the volatilization of the solvent in the sample and the inactivation and denaturation of the biological sample are slowed down, and the detection deviation is reduced;

(2) After the detection is completed, the sample can be sucked by a suction tube so as to recycle the precious biological sample.

Drawings

Fig. 1 is a perspective view of the present utility model.

Fig. 2 is a schematic view of the internal structure of the present utility model.

Fig. 3 is an exploded schematic view of a heat sink and thermally conductive connection assembly.

In the figure: the light source comprises a light source 1, an incident optical fiber 2, an emergent optical fiber 3, an incident optical fiber connector 4, an emergent optical fiber connector 5, an upper rotating arm 6, a support 7, a control panel 8, a light receiver 9, a display screen 10, a semiconductor refrigerating sheet 11, an upper heat conducting connecting plate 12, a radiator 13, a bottom plate 14, a shell 15, a lower heat conducting connecting plate 16, a heat conducting connecting pipe 17, an aluminum profile radiating fin 18, a radiating fan 19, a support column 20, a fixing strip 21, a limiting block 22 and a temperature sensor 23.

Detailed Description

The utility model is further described below with reference to the drawings and detailed description.

An ultra-micro ultraviolet spectrophotometer as shown in fig. 1, 2 and 3 comprises a light source 1 (the light source is a xenon lamp), an incident optical fiber 2, an emergent optical fiber 3, an incident optical fiber connector 4, an emergent optical fiber connector 5, an upper rotating arm 6, a support 7, a control board 8, a light receiver 9 (CCD, charge coupled light receiver), a display screen 10, a bottom plate 14, a shell 15, a semiconductor refrigerating sheet 11, an upper heat conducting connecting plate 12 and a radiator 13; the display screen sets up on the shell, the light source, the control panel, the optical receiver, the outgoing optic fibre, thermally conductive connection subassembly and radiator all set up in the shell, be fixed with support column 20 on the bottom plate, the support column top that is located the homonymy is fixed with fixed strip 21, the support is fixed on the fixed strip, the upper surface of support exposes in the upper surface of shell, incident optic fibre passes the shell, go up the rocking arm damping and rotate and connect on the support, be equipped with stopper 22 on the rocking arm, incident optic fibre both ends link to each other with the light source respectively, incident optic fibre both ends link to each other with the optical receiver, outgoing optic fibre connects respectively, the light receiver, the display screen is connected and signal connection with the control panel electricity respectively, incident optic fibre connects passes last rocking arm, and the tip of incident optic fibre connects exposes outside last rocking arm, outgoing optic fibre connects passes the support, and the tip of outgoing optic fibre connects exposes outside the support, the tip of outgoing optic fibre connects forms the sample platform, the semiconductor refrigeration piece is connected with the control panel electricity, the cold junction and last thermally conductive connection of semiconductor refrigeration piece, go up the rocking arm is passed last thermally conductive connection and is connected with last thermally conductive connection board, be equipped with temperature sensor 23 on the rocking arm, the last connection board is electrically connected with control panel, outgoing optic fibre both ends are connected with the thermally conductive connection piece and thermally conductive fan is connected with thermally conductive piece 16 thermally conductive connection, the thermally conductive fan is connected with the thermally conductive piece through thermally conductive connection piece and the thermally conductive fan is connected with the thermally conductive piece of the heat-conductive piece and the heat-conductive piece is connected 17, the cooling piece is connected with the heat-conductive piece is connected with the heat conductor piece is connected to the cooling piece.

The application method of the utility model comprises the following steps: and (3) dripping about 1-2 microliters of biological sample solution on the surface of the sample bearing table, rotating the upper rotating arm towards the sample bearing table until the limiting block is contacted with the support, pulling the biological sample solution into a liquid column (absorption tank) by contacting the incident optical fiber connector and the emergent optical fiber connector with the biological sample solution, starting detection, generating light by the light source, conducting the light through the incident optical fiber and the incident optical fiber connector and transmitting the biological sample solution, conducting the light into the light receiver through the emergent optical fiber connector and the emergent optical fiber, and reporting and displaying a detection analysis result on the display screen by the light receiver.

The above-described embodiment is only a preferred embodiment of the present utility model, and is not limited in any way, and other variations and modifications may be made without departing from the technical aspects set forth in the claims.

Claims

1. The utility model provides an ultra-micro ultraviolet spectrophotometer, includes light source (1), incidence optic fibre (2), outgoing optic fibre (3), incidence optic fibre connects (4), outgoing optic fibre connects (5), goes up rocking arm (6), support (7), control panel (8), optical receiver (9) and display screen (10), go up rocking arm damping rotation and connect on the support, the incidence optic fibre both ends link to each other with light source, incoming optic fibre connects respectively, outgoing optic fibre both ends link to each other with optical receiver, outgoing optic fibre connects respectively with control panel electricity and signal connection, incoming optic fibre connects and passes and go up the rocking arm, and the tip that the incidence optic fibre connects exposes outside last rocking arm, outgoing optic fibre connects passes the support, and the tip that the outgoing optic fibre connects exposes outside the support, and the tip that the outgoing optic fibre connects forms holds the appearance platform, its characterized in that, semiconductor refrigeration piece and last heat conduction connecting plate (12) and radiator (13) are connected with the incoming optic fibre respectively, the cold junction and the last connecting plate heat conduction of semiconductor refrigeration piece are connected with last connecting plate heat conduction, and the heat-conducting assembly of semiconductor refrigeration piece is passed through the heat conduction.

2. The ultra-micro ultraviolet spectrophotometer of claim 1, further comprising a base plate (14) and a housing (15), said display screen being disposed on the housing, said light source, control board, light receiver, outgoing fiber, thermally conductive connection assembly and heat sink being disposed within the housing, an upper surface of said support being exposed to an upper surface of the housing, said incoming fiber passing through the housing.

3. An ultra-micro ultraviolet spectrophotometer according to claim 1 or 2, wherein the heat conducting connection assembly comprises a lower heat conducting connection plate (16) and a heat conducting connection pipe (17), the lower heat conducting connection plate is in heat conducting connection with the hot end of the semiconductor refrigerating sheet, and two ends of the heat conducting connection pipe are respectively in heat conducting connection with the lower heat conducting connection plate and the radiator.

4. An ultra-micro ultraviolet spectrophotometer according to claim 3, wherein the radiator comprises an aluminum profile radiating fin (18) and a radiating fan (19), the aluminum profile radiating fin is arranged on the radiating fan, and the heat conducting connecting pipe is in heat conducting connection with the aluminum profile radiating fin.

5. An ultra-micro ultraviolet spectrophotometer according to claim 2, wherein the bottom plate is fixed with a support column (20), the top ends of the support columns positioned on the same side are fixed with a fixing strip (21), and the support is fixed on the fixing strip.

6. An ultra-micro ultraviolet spectrophotometer according to claim 1, wherein a limiting block (22) is arranged on the upper rotating arm.

7. The ultra-micro ultraviolet spectrophotometer of claim 1, wherein said light source is a xenon lamp.

8. The ultra-micro ultraviolet spectrophotometer according to claim 1, wherein the upper heat conducting connecting plate is provided with a temperature sensor (23), and the temperature sensor is electrically and signally connected with the control board.