CN217180594U - Folding long-optical-path liquid optical detection device - Google Patents
Folding long-optical-path liquid optical detection device Download PDFInfo
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- CN217180594U CN217180594U CN202220224436.9U CN202220224436U CN217180594U CN 217180594 U CN217180594 U CN 217180594U CN 202220224436 U CN202220224436 U CN 202220224436U CN 217180594 U CN217180594 U CN 217180594U
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Abstract
The utility model belongs to the technical field of the technique that optical detection's is related to a long optical distance liquid optical detection device of folding shape, it includes the flow cell base member, the flow cell base member includes interior passageway and reflection part, the reflection part connect in interior passageway, interior passageway is equipped with fluid entry, fluid outlet, light entrance and light exit port, the light entrance is connected with the light-emitting part, the light exit port is connected with the sensor. According to the light source device, the transmission path of light in the inner channel is changed by arranging the reflecting piece, and the light is not transmitted in a straight line along the inner channel; the application prolongs the testing optical path through the reflecting piece, thereby improving the detection capability of weak signals.
Description
Technical Field
The application relates to the technical field of optical detection, in particular to a folding long-optical-path liquid optical detection device.
Background
The flow photometric analysis is a detection method commonly used in water quality flow injection analysis, the flow cell is a key device of the flow photometric analysis, and a flow cell base body is generally provided with a fluid inlet and a fluid outlet and a fluid inner channel which is communicated between the inlet and the outlet. The fluid inner channel at least comprises two turns, and the light channel is a section of the inner channel which is positioned between the light incident port and the light emergent port and is positioned at the turning part of the fluid channel. The flow cell can be generally classified into a Z-shaped, H-shaped, U-shaped, etc. structure according to the basic shape of the fluid channel. After the inlet end of the base body of the flow cell is connected with the fluid conveying pipe, fluid flows to the outlet end along the channel in the base body under the action of a pump and passes through the optical channel, and the content of the substance to be detected is determined according to the transmission condition of light after the fluid is irradiated by the light.
In the prior art, a single pipeline is usually arranged in a flow cell for sample testing, the testing optical path is short, the detection capability of weak signals is influenced, the volume of the flow cell is integrally increased in a current common mode, but the advantage of small-volume detection of the flow cell is weakened.
SUMMERY OF THE UTILITY MODEL
In order to improve the detection capability of weak signals, the application provides a folding type long-optical-path liquid optical detection device.
The application provides a folding long optical distance liquid optical detection device adopts following technical scheme:
the utility model provides a long optical path liquid optical detection device of folded form, includes the flow-through cell base member, the flow-through cell base member includes interior passageway and reflection part, the reflection part connect in interior passageway, interior passageway is equipped with fluid entry, fluid outlet, light entrance and light exit port, the light entrance is connected with the light-emitting part, the light exit port is connected with the sensor.
By adopting the technical scheme, the inner channel for liquid to flow is arranged in the flow cell base body, the reflecting piece is arranged in the inner channel, light emitted by the light emitting piece of the light incident port irradiates the reflecting piece to be reflected, and then is reflected to the sensor of the light emergent port through the reflecting piece, so that liquid is detected. Through the arrangement of the reflecting piece, the propagation path of light in the inner channel is changed, and the light does not only linearly propagate along the inner channel; compared with the prior art, the light is transmitted in the inner channel in a non-linear mode, the testing optical path is prolonged, and therefore the detection capability of weak signals is improved.
Optionally, the inner channel has multiple sections, which are a light incident section, a light reflecting section and a light exiting section, the light incident port and the fluid inlet are disposed on the light incident section, the light exiting port and the fluid outlet are disposed on the light exiting section, and the reflecting member is disposed at two ends of the light reflecting section.
Through adopting above-mentioned technical scheme, liquid flows in from the fluid entry, be full of whole interior passageway, light is penetrated into from the one end of light incident section, liquid flow direction shines to the reflection part in the light incident section, under the reflection of reflection part, light propagates to another reflection part along the light reflection section, under the reflection of another reflection part, light penetrates to the inductor along light emergent section, supply the light propagation through setting up the multistage passageway, detect liquid, can increase the propagation path of light, thereby prolong the test optical path, the detection capability of weak signal is provided.
Optionally, the inner channel is zigzag-shaped, and the light incident section, the light reflection section and the light exit section are sequentially connected end to form a zigzag shape.
By adopting the technical scheme, the inner channel is arranged in a Z shape, so that the volume occupied by the inner channel can be reduced as much as possible while the testing optical path is increased, and the volume of the flow cell matrix is reduced.
Optionally, the reflecting element is located at a light path turning point of the inner channel, and the placing angle of the reflecting element is perpendicular to a bisector of an angle of an inner angle of the channel at the light path turning point, and the reflecting element is a reflecting mirror.
By adopting the technical scheme, the reflecting piece and the inner angle bisector at the light path turning part of the inner channel are perpendicular to each other, so that light rays emitted by the light emitting piece can be ensured, the light rays are accurately reflected by the reflecting piece and are irradiated along the extending direction of the inner channel, namely the light rays are transmitted along the flowing direction of liquid, and the accuracy of liquid detection is improved.
Optionally, the center of the reflector is located on the central axis of the inner channel.
Through adopting above-mentioned technical scheme, be located interior passageway axis with the center of reflection piece, can be so that light propagates along interior passageway's axis, improve the collimation nature that light propagated to improve the accuracy that liquid detected.
Optionally, the light reflection section is obliquely disposed, one end of the light incidence section is disposed near the top of the flow cell substrate, and one end of the light emergence section is disposed near the bottom of the flow cell substrate.
Through adopting above-mentioned technical scheme, fluid entry sets up in being close to the light incident section at flow cell base member top, and liquid flows in from the light incident section, along the light reflection section flow direction light emergent section that the slope set up, because the light reflection section sets up for the slope, liquid can rely on self weight to flow to the light emergent section at the light reflection section, and the gravitational potential energy of make full use of liquid self flows, simple structure, reduction in production cost.
Optionally, the fluid inlet is connected to a flow pipe, and the flow pipe is connected to a water pump.
Through adopting above-mentioned technical scheme, liquid is from the circulation pipe inflow inner channel under the pressure of water pump, has improved liquid and has got into the flow-through cell and the speed that flows in the flow-through cell, has guaranteed the smooth and easy nature that liquid flows, has improved the speed that liquid detected to the efficiency that liquid detected has been improved.
Optionally, the flow cell substrate is made of transparent plastic.
By adopting the technical scheme, the base body of the flow cell is made of plastic materials, so that the production cost can be saved; and the transparent material can better observe the flowing condition of the liquid in the flow cell, and the condition that the detection is not accurate due to unsmooth flowing or bubble generation is reduced, so that the liquid detection accuracy is improved.
In summary, the present application includes at least one of the following beneficial technical effects:
through the arrangement of the reflecting piece, the propagation path of light in the inner channel is changed, and the light does not only linearly propagate along the inner channel; compared with the prior art, the light is transmitted in the inner channel in a non-linear mode, the testing optical path is prolonged, and therefore the detection capability of weak signals is improved;
the position of the reflecting piece is arranged, so that light can be transmitted along the central axis of the inner channel, the collimation of light transmission is improved, and the accuracy of liquid detection is improved;
the setting of water pump has improved liquid and has got into the flow-through cell and the speed that flows in the flow-through cell, has guaranteed the smooth and easy nature that liquid flows, has improved the speed that liquid detected to the efficiency that liquid detected has been improved.
Drawings
FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present application;
FIG. 2 is a cross-sectional view of embodiment 1 of the present application;
fig. 3 is a cross-sectional view of embodiment 2 of the present application.
Description of reference numerals: 1. a flow cell substrate; 2. an inner channel; 21. a light incident section; 211. a fluid inlet; 212. a light entrance port; 22. a light reflecting section; 23. a light exit section; 231. a fluid outlet; 232. a light exit port; 3. a light emitting member; 4. a sensor; 5. a reflector; 51. a first reflector; 52. a second reflector; 53. a third reflector; 6. a beam splitter.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
Example 1: the embodiment 1 of the application discloses a folding long-optical-path liquid optical detection device. Referring to fig. 1 and 2, a folded long-optical-path liquid optical detection device includes a flow cell substrate 1 having an inner channel 2, the inner channel 2 is provided with a fluid inlet 211 for fluid to enter, a fluid outlet 231 for fluid to exit, a light inlet 212 connected to a light emitting element 3, and a light outlet 232 connected to a sensor 4, light is incident from the light inlet 212, passes through liquid, and then is incident from the light outlet 232 to the sensor 4.
Referring to fig. 1 and 2, the inner channel 2 is zigzag, and includes a light incident section 21, a light reflecting section 22 and a light emitting section 23 in sequence, one end of the light incident section 21 is connected to the light emitting element 3, the other end of the light incident section 21 is connected to one end of the light reflecting section 22, the fluid inlet 211 is disposed on the light incident section 21, and an included angle formed by the fluid inlet 211 and one end of the light incident section 21 with the light emitting element 3 is an obtuse angle; the other end of the light reflection section 22 is connected with one end of the light exit section 23, the other end of the light exit section 23 is connected with the sensor 4, the light exit section 23 is connected with the fluid outlet 231, and the fluid outlet 231 is arranged in parallel with the fluid inlet 211.
Referring to fig. 1 and 2, the light incident section 21 and the light exiting section 23 are disposed in parallel, and the connecting portion between the light incident section 21 and the light reflecting section 22 is provided with two reflecting members 5, in this embodiment, another reflecting member 5 is disposed at the connecting portion between the light exiting section 23 and the light reflecting section 22, in this embodiment, the connecting portion is a light path turning portion.
Referring to fig. 1 and 2, the reflector 5 is disposed at an angle perpendicular to a bisector of an angle of an inner channel at the turn of the optical path, and the center of the reflector 5 is located on a central axis of the inner channel 2, the reflector 5 includes a first reflector 51 and a second reflector 52, the first reflector 51 is located at a connection position of the light incident section 21 and the light reflecting section 22, and the second reflector 52 is located at a connection position of the light reflecting section 22 and the light exiting section 23.
Referring to fig. 1 and 2, the light incident section 21 of the inner channel 2 is arranged along one side far away from the bottom of the flow cell substrate 1, the light emergent section 23 of the inner channel 2 is arranged along one side near the bottom of the flow cell substrate 1, and one end of the light reflecting section 22 connected with the light incident section 21 is obliquely arranged far away from the bottom of the flow cell substrate 1, so that liquid can flow to the light emergent section 23 through gravity in the light reflecting section 22, and the structure is simple.
Referring to fig. 1 and 2, the light incident port 212 and the light exit port 232 are closed ports with external threads, the fluid inlet 211 and the fluid outlet 231 are openings with external threads, the fluid inlet 211 is further connected with a flow pipe for flowing and inputting liquid, one end of the flow pipe is connected with the fluid inlet 211, the other end of the flow pipe is connected with a water pump, pressure is applied by the water pump to press the liquid into the light incident section 21, and the liquid flows more smoothly in the inner channel 2.
Referring to fig. 1 and 2, in the present embodiment, the flow cell substrate 1 is made of transparent plastic material, which can reduce the production cost, and in other embodiments, glass material may be used.
The implementation principle of the folding long-optical-path liquid optical detection device in embodiment 1 of the present application is as follows: the liquid is pressed into the fluid inlet 211 by a water pump, flows to the light reflection section 22 along the light incidence section 21, and flows out from the fluid outlet 231 on the light reflection section 22; light that light-emitting component 3 sent propagates along liquid flow direction axis in light incident section 21, take place the reflection when meetting first speculum 51, the propagation path of light changes, propagate along the axis of light reflection section 22, meet second speculum 52, the propagation path of light changes once more, propagate to light sensor 4 along the axis of light emergent section 23 on, the realization is to the detection of liquid, the corresponding change in 2 settings of inner channel of zigzag and light path, can be under the condition that does not change flow cell base member 1 volume, extension test optical path, thereby improve the detection ability of weak signal.
Example 2: the embodiment of the application is different from the embodiment 1 in that: the position of the sensor 4 and the number of mirrors.
In this embodiment, referring to fig. 3, the apparatus further includes a beam splitter 6, the light emitting element 3 includes a first reflector 51, a second reflector 52 and a third reflector 53, the third reflector 53 is disposed at one end of the light exiting section 23 close to the third reflector 53, the sensor 4 is perpendicular to the light emitting element 3 and is disposed at the same end of the light entering section 21, the beam splitter 6 is disposed at a connection position of the sensor 4 and the light emitting element 3, and is configured to transmit light to the first reflector 51, and reflect the light reflected from the first reflector 51 to the sensor 4 for receiving signals.
The implementation principle of embodiment 2 of the present application is as follows: light is sent out from light-emitting component 3, light propagates to first speculum 51 along light incident section 21, through the reflection of first speculum 51, light reflects to second speculum 52 along light reflection section 22, through the reflection of second speculum 52, light reflects to third speculum 53 along light emergent section 23, through the setting of third speculum 53, reflect light back to second speculum 52, again pass through the reflection of second speculum 52 and first speculum 51 in proper order, reflect spectroscope 6 of light incident port 212 department, with light reflection to sensor 4, carry out the receipt of signal, through setting light-emitting component 3 to threely, can realize the round trip propagation of light in the fluid, thereby the propagation path of light has been prolonged, the optical path of test has been increased, thereby improve the detectability of device to weak signal.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a long optical path liquid optical detection device of folded form, includes flow-through cell base member (1), its characterized in that: flow-through cell base member (1) includes interior passageway (2) and reflection part (5), reflection part (5) connect in interior passageway (2), interior passageway (2) are equipped with fluid entry (211), fluid outlet (231), light entrance (212) and light exit port (232), light entrance (212) are connected with light-emitting component (3), light exit port (232) are connected with sensor (4).
2. A folded long optical path liquid optical inspection device according to claim 1, wherein: interior passageway (2) have the multistage, are light incident section (21), light reflection section (22) and light emergent section (23) respectively, light incident port (212) and fluid entry (211) are located light incident section (21), light emergent port (232) and fluid export (231) are located light emergent section (23), reflection piece (5) are located the both ends of light reflection section (22).
3. A folded long optical path liquid optical inspection device according to claim 2, wherein: the inner channel (2) is Z-shaped, and the light incidence section (21), the light reflection section (22) and the light emergence section (23) are sequentially connected end to form a Z shape.
4. A folded long optical path liquid optical inspection device according to claim 1, wherein: the reflecting piece (5) is positioned at the light path turning part of the inner channel (2), the placing angle of the reflecting piece (5) is perpendicular to the bisector of the angle of the inner angle of the channel at the light path turning part, and the reflecting piece (5) is a reflector.
5. A folded long optical path liquid optical inspection device according to claim 1, wherein: the center of the reflecting piece (5) is positioned on the central axis of the inner channel (2).
6. A folded form long optical path liquid optical inspection device according to claim 2, wherein: the light reflection section (22) is obliquely arranged, one end of the light incidence section (21) is close to the top of the flow cell base body (1), and one end of the light emergence section (23) is close to the bottom of the flow cell base body (1).
7. A folded long optical path liquid optical inspection device according to claim 1, wherein: the fluid inlet (211) is connected with a circulating pipe, and the circulating pipe is connected with a water pump.
8. A folded long optical path liquid optical inspection device according to claim 1, wherein: the flow cell base body (1) is made of transparent plastic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220224436.9U CN217180594U (en) | 2022-01-26 | 2022-01-26 | Folding long-optical-path liquid optical detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220224436.9U CN217180594U (en) | 2022-01-26 | 2022-01-26 | Folding long-optical-path liquid optical detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217180594U true CN217180594U (en) | 2022-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220224436.9U Active CN217180594U (en) | 2022-01-26 | 2022-01-26 | Folding long-optical-path liquid optical detection device |
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| Country | Link |
|---|---|
| CN (1) | CN217180594U (en) |
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- 2022-01-26 CN CN202220224436.9U patent/CN217180594U/en active Active
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