CN219935666U - Photoelectric detector for liquid concentration - Google Patents
Photoelectric detector for liquid concentration Download PDFInfo
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- CN219935666U CN219935666U CN202321275550.5U CN202321275550U CN219935666U CN 219935666 U CN219935666 U CN 219935666U CN 202321275550 U CN202321275550 U CN 202321275550U CN 219935666 U CN219935666 U CN 219935666U
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- light
- detection
- liquid concentration
- splitting sheet
- liquid
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- 239000007788 liquid Substances 0.000 title claims abstract description 50
- 238000001514 detection method Methods 0.000 claims abstract description 63
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000001228 spectrum Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000001678 irradiating effect Effects 0.000 abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000010183 spectrum analysis Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000005337 ground glass Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000005304 optical glass Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Optical Measuring Cells (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model relates to the technical field of water quality detection, in particular to a liquid concentration photoelectric detection device which comprises a bracket, a light source, a light splitting device, a flow cuvette, a detection photoelectric sensor and a reference photoelectric sensor. According to the liquid concentration photoelectric detection device, the light splitting device is arranged to split the incident light provided by the light source into two parts, one part is used for irradiating the flowing cuvette to detect the sample, and the other part is used as a reference light path to eliminate errors caused by fluctuation of the light source, so that the accuracy of spectrum detection can be greatly improved; on the other hand, the flow cuvette is provided with a liquid inlet and a liquid outlet, so that samples with different concentrations can be continuously detected.
Description
Technical Field
The utility model relates to the technical field of water quality detection, in particular to a liquid concentration photoelectric detection device.
Background
In the field of water quality detection, after sampled water is treated, an optical-electrical detection device is generally used for detecting absorbance of the sample, so that the concentration of total nitrogen and total phosphorus in the sample is measured and calculated.
The cuvette is a transparent container used for detecting liquid spectrum, and mainly comprises a quartz cuvette fired by quartz powder, and also comprises a micro cuvette, a semi-micro cuvette, a fluorescent cuvette and the like; the glass is generally cuboid, ground glass is arranged on the bottom and two sides of the cuboid, and a light-transmitting surface made of optical glass is formed by fusion integration, high-temperature sintering of glass powder and gluing.
However, the existing cuvette cannot allow the liquid in the cuvette to flow, so that the liquid with the concentration being changed cannot be continuously detected, and meanwhile, due to the fact that the irradiation of light inevitably has fluctuation, the spectrum analysis is inaccurate, and the analysis effect of the spectrum analyzer is reduced.
The existing photoelectric detection device is also specially designed for specific requirements, the light splitting sheet and the photoelectric sensor of the existing photoelectric detection device are usually fixedly arranged, the replacement is inconvenient, even if the fault needs to be removed, the angle and the position of the light splitting sheet, the sensor and other parts are very difficult to accurately adjust, and the disassembly and the assembly are quite unchanged.
Disclosure of Invention
In view of the above, the present utility model provides a liquid concentration photoelectric detection device, which at least partially solves the problems existing in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a photoelectric detector for liquid concentration is composed of a supporter and a liquid detector arranged on said supporter
A light source for providing incident light for detection;
the light splitting device is used for splitting the light rays of the light source into at least two paths including a detection light path and a reference light path;
the flow cuvette is arranged on a detection light path behind the light splitting device and comprises a liquid inlet and a liquid outlet;
the detection photoelectric sensor is arranged on a detection light path behind the flow cuvette;
and the reference photoelectric sensor is arranged on a reference light path behind the light splitting device.
Preferably, the light splitting device comprises a light splitting sheet, and the light splitting sheet and incident light provided by the light source are arranged on the bracket at an angle of 45 degrees.
Preferably, the light splitting device further comprises a light splitting sheet seat and a light splitting sheet cover plate, the light splitting sheet is fixedly arranged on the light splitting sheet seat, the light splitting sheet seat is inserted into a seat hole matched with the light splitting sheet seat and arranged on the support, and the light splitting sheet cover plate is connected to the light splitting sheet seat and the seat hole in a covering mode.
Preferably, a beam splitter groove is formed along the axial direction of the beam splitter seat, and the beam splitter is inserted into the beam splitter groove.
Preferably, the light splitting sheet seat is an eight-prism structure with an octagonal section.
Preferably, the flow cuvette is of a cuboid structure with light-shielding shells on four sides, the liquid inlet and the liquid outlet are arranged at the upper end of the cuboid, and transmission windows for transmitting detection light paths are arranged on two opposite sides of the light-shielding shells.
Preferably, the flow cuvette is inserted into a rectangular hole matched with the flow cuvette and arranged on the bracket, and is covered on the rectangular hole through a cuvette cover plate in a shape like a Chinese character 'Hui'.
Preferably, the light source is an LED lamp, and the LED lamp is mounted on the bracket through a screw plug.
Preferably, a first mounting groove for mounting the reference photoelectric sensor is formed in the support, and the reference photoelectric sensor is inserted into the first mounting groove and fixedly connected with the first sensor cover plate.
Preferably, the bracket is provided with a second mounting groove for mounting the detection photoelectric sensor, and the detection photoelectric sensor is inserted into the second mounting groove and fixedly connected with the second sensor cover plate.
According to the liquid concentration photoelectric detection device, the light splitting device is arranged to split the incident light provided by the light source into two parts, one part is used for irradiating the flowing cuvette to detect the sample, and the other part is used as a reference light path to eliminate errors caused by fluctuation of the light source, so that the accuracy of spectrum detection can be greatly improved; on the other hand, the flow cuvette is provided with a liquid inlet and a liquid outlet, so that samples with different concentrations can be continuously detected.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed 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 utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an exploded view of a photoelectric detection device for liquid concentration according to an embodiment of the present utility model;
FIG. 2 is a second exploded view of a photoelectric detection device for liquid concentration according to an embodiment of the present utility model;
fig. 3 is a schematic view of an optical path of a photoelectric detection device for liquid concentration according to an embodiment of the present utility model.
Reference numerals illustrate:
1-bracket, 11-seat hole, 12-rectangular hole, 13-first mounting groove, 14-second mounting groove, 2-light source, 21-spiral plug, 3-beam splitter seat, 31-beam splitter groove, 32-beam splitter cover plate, 4-flow cuvette, 41-liquid inlet, 42-cuvette cover plate, 5-reference photoelectric sensor, 6-detection photoelectric sensor, 71-first sensor cover plate and 72-second sensor cover plate.
Detailed Description
Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.
It should be noted that, without conflict, the following embodiments and features in the embodiments may be combined with each other; and, based on the embodiments in this disclosure, all other embodiments that may be made by one of ordinary skill in the art without inventive effort are within the scope of the present disclosure.
It is noted that various aspects of the embodiments are described below within the scope of the following claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present disclosure, one skilled in the art will appreciate that one aspect described herein may be implemented independently of any other aspect, and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. In addition, such apparatus may be implemented and/or such methods practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.
Fig. 1 and fig. 2 are two exploded views of a liquid concentration photoelectric detection apparatus according to an embodiment of the present utility model, and fig. 3 is a schematic light path diagram of the liquid concentration photoelectric detection apparatus according to an embodiment of the present utility model, and the liquid concentration photoelectric detection apparatus will now be described in detail with reference to fig. 1, fig. 2, and fig. 3.
Referring to fig. 1 and 2, the photoelectric detector for liquid concentration according to this embodiment includes a support 1, a light source 2, a spectroscopic device, a flow cuvette 4, a detection photoelectric sensor 6, and a reference photoelectric sensor 5. In this embodiment, the light source 2 is an LED lamp, and the LED lamp is mounted on the bracket 1 through a screw plug 21 for providing incident light for detection, and the screw plug 21 can facilitate fixing, checking and replacing the light source. In other embodiments, the light source 2 may be a laser source with a certain fixed wavelength, such as 590nm or 680nm, for detecting the ammonia nitrogen concentration of the sample, or 880nm, for detecting the total phosphorus concentration of the sample.
The light splitting device comprises a light splitting sheet, a light splitting sheet seat 3 and a light splitting sheet cover plate 32, and is used for dividing incident light of the light source 2 into a detection light path and a reference light path. The light-splitting sheet seat 3 is of an octagonal prism structure with an octagonal section, a light-splitting sheet groove 31 is arranged along the axial direction of the light-splitting sheet seat 3, and the light-splitting sheet is inserted into the light-splitting sheet groove 31 and forms an included angle of 45 degrees with incident light provided by the light source 2; then the light-splitting sheet seat 3 is inserted into the seat hole 11 which is matched with the light-splitting sheet seat and is arranged on the bracket 1, the light-splitting sheet seat 3 and the seat hole 11 are covered by the light-splitting sheet cover plate 32, and then the light-splitting sheet seat is fixed on the bracket 1 through screws at four corners of the light-splitting sheet cover plate 32. The structure of the utility model is convenient for dismounting and replacing the beam splitter base and the beam splitter, and the angle and the position of the beam splitter base and the beam splitter are convenient for accurate fixation. In other embodiments, the beam splitter seat 3 may be rectangular or other shapes convenient for positioning, and the structure for fixing the beam splitter may be a fixture or other structure.
The flow cuvette 4 is arranged on a detection light path behind the light splitting device, and is used for carrying out spectral analysis on liquid flowing through the flow cuvette 4, so as to calculate the concentration of ammonia, nitrogen, phosphorus and other components. The flow cuvette 4 is inserted into a rectangular hole 12 matched with the flow cuvette and arranged on the bracket 1, is covered on the rectangular hole 12 through a cuvette cover plate 42 in a shape like a Chinese character 'Hui', and is fixedly connected on the bracket 1 through screws arranged at four corners of the cuvette cover plate 42.
The flow cuvette 4 has a cuboid structure with light-shielding shells on four sides, transmission windows for transmitting detection light paths are arranged on two opposite sides of the light-shielding shells, a liquid inlet 41 and a liquid outlet are arranged at the upper end of the cuboid, the horizontal optical path of the internal cavity can be set to be 0.5cm-2cm, in the embodiment, the light-shielding shells are black polyethylene light-shielding shells, and the optical path of the internal cavity is 1cm.
As shown in fig. 1 and 2, a detection photoelectric sensor 6 is disposed on a detection light path behind the flow cuvette 4, a second mounting groove 14 for mounting the detection photoelectric sensor 6 is disposed on the bracket 1, and the detection photoelectric sensor 6 is inserted into the second mounting groove 14 and fixedly connected through a second sensor cover plate 72.
The reference photoelectric sensor 5 is arranged on a reference light path behind the light splitting device, the first mounting groove 13 for mounting the reference photoelectric sensor 5 is arranged on the bracket 1, and the reference photoelectric sensor 5 is inserted into the first mounting groove 13 and fixedly connected through the first sensor cover plate 71.
As shown in fig. 3, after the light source 2 emits incident light, the incident light irradiates the light splitting sheet, and the incident light is split into two paths, one path is a reference light path, and directly irradiates the reference photoelectric sensor 5, and the detection result of the part can be used as a reference to eliminate the influence caused by the fluctuation of the light source 2; the other path of detection light path irradiates on the flowing cuvette 4, penetrates through the liquid to be detected, and then irradiates on the detection photoelectric sensor 6, and the detection photoelectric sensor 6 obtains the intensity of light. The concentration of the substance to be detected in the sample liquid is calculated from the data of the reference photosensor 5 and the detection photosensor 6 by converting the langerhans' law into the magnitude of absorbance.
The photoelectric detection device for liquid concentration divides the incident light provided by the light source into two parts, one path is used for irradiating the flowing cuvette 4 to detect a sample, and the other path is used as a reference light path for eliminating errors caused by fluctuation of the light source, so that the accuracy of spectrum detection can be greatly improved; on the other hand, since the flow cuvette 4 is provided with the liquid inlet 41 and the liquid outlet, samples of different concentrations can be continuously detected.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.
Claims (10)
1. A liquid concentration photoelectric detection device, which is characterized by comprising a bracket (1) and a liquid concentration photoelectric detection device arranged on the bracket:
a light source (2) for providing incident light for detection;
the light splitting device is used for splitting the light of the light source (2) into at least two paths including a detection light path and a reference light path;
a flow cuvette (4) arranged on a detection light path behind the light splitting device, wherein the flow cuvette (4) comprises a liquid inlet (41) and a liquid outlet;
a detection photosensor (6) provided on a detection light path behind the flow cuvette (4);
and a reference photoelectric sensor (5) arranged on a reference light path behind the light splitting device.
2. The liquid concentration photoelectric detection apparatus according to claim 1, wherein the spectroscopic apparatus comprises a spectroscopic sheet that makes an angle of 45 ° with the incident light provided by the light source (2).
3. The liquid concentration photoelectric detection apparatus according to claim 2, wherein the light splitting apparatus further comprises a light splitting sheet seat (3) and a light splitting sheet cover plate (32), the light splitting sheet is fixedly arranged on the light splitting sheet seat (3), the light splitting sheet seat (3) is inserted into a seat hole (11) matched with the light splitting sheet seat and arranged on the support (1), and the light splitting sheet cover plate (32) is connected onto the light splitting sheet seat (3) and the seat hole (11).
4. A liquid concentration photoelectric detection apparatus according to claim 3, wherein a light-splitting sheet groove (31) is provided along an axial direction of the light-splitting sheet holder (3), and the light-splitting sheet is inserted into the light-splitting sheet groove (31).
5. The liquid concentration photoelectric detection apparatus according to claim 3 or 4, wherein the light-splitting sheet holder (3) has an octagonal prism structure with an octagonal cross section.
6. The liquid concentration photoelectric detection apparatus according to claim 5, wherein the flow cuvette (4) has a rectangular parallelepiped structure provided with a light-shielding casing on four sides, the liquid inlet (41) and the liquid outlet are provided at an upper end of the rectangular parallelepiped, and transmission windows for transmitting a detection light path are provided on opposite sides of the light-shielding casing.
7. The liquid concentration photoelectric detection apparatus according to claim 1, wherein the flow cuvette (4) is inserted into a rectangular hole (12) matched with the flow cuvette and arranged on the bracket (1), and is covered on the rectangular hole (12) through a cuvette cover plate (42) in a shape of a Chinese character 'hui'.
8. The device according to claim 1, characterized in that the light source (2) is an LED lamp, which is mounted on the support (1) by means of a screw plug (21).
9. The liquid concentration photoelectric detection apparatus according to claim 1, wherein a first mounting groove (13) for mounting the reference photoelectric sensor (5) is provided on the bracket (1), and the reference photoelectric sensor (5) is inserted into the first mounting groove (13) and is fixedly connected through a first sensor cover plate (71).
10. The liquid concentration photoelectric detection apparatus according to claim 7, 8 or 9, wherein a second mounting groove (14) for mounting the detection photoelectric sensor (6) is provided on the bracket (1), and the detection photoelectric sensor (6) is inserted into the second mounting groove (14) and fixedly connected through a second sensor cover plate (72).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321275550.5U CN219935666U (en) | 2023-05-24 | 2023-05-24 | Photoelectric detector for liquid concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321275550.5U CN219935666U (en) | 2023-05-24 | 2023-05-24 | Photoelectric detector for liquid concentration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219935666U true CN219935666U (en) | 2023-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321275550.5U Active CN219935666U (en) | 2023-05-24 | 2023-05-24 | Photoelectric detector for liquid concentration |
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| CN (1) | CN219935666U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119000633A (en) * | 2024-10-25 | 2024-11-22 | 国仪大为(北京)智能科技有限公司 | Non-contact type aquatic oil suspended matter detection device based on fluorescence method |
-
2023
- 2023-05-24 CN CN202321275550.5U patent/CN219935666U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119000633A (en) * | 2024-10-25 | 2024-11-22 | 国仪大为(北京)智能科技有限公司 | Non-contact type aquatic oil suspended matter detection device based on fluorescence method |
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