Micro detection device

Abstract

The utility model discloses a trace detection device. The trace detection device comprises a first detection unit, a second detection unit and a gas output unit, wherein the first detection unit is provided with a first detection end part, the second detection unit is provided with a second detection end part, and a detection gap for accommodating target liquid is formed between the first detection end part and the second detection end part; the gas output unit is provided with a gas outlet, and the gas output unit is used for outputting gas through the gas outlet to clean the first detection end part and the second detection end part. When the mode in the application is adopted to clean the detection end part, consumables such as dust-free paper are not needed, so that the cost is low; and meanwhile, impurities such as paper scraps cannot be adhered to the detection end part, so that the detection precision of the liquid concentration is ensured. Furthermore, according to the method for cleaning the detection end, operation is easy, manual intervention is not needed, hand fatigue caused by wiping the detection end for a long time is avoided, and the automation degree and the intelligence degree are high.

Description

Technical Field

[0001] This application relates to the field of trace detection technology, and particularly to a trace detection device. Background Art

[0002] Currently, trace detection devices such as micro-spectrophotometers are usually used to detect the concentration of a target liquid. The specific detection principle is as follows: There are two detection ends with variable distances on the trace detection device. After adding the target liquid to the two detection ends, an optical path is formed under the action of the surface tension of the target liquid. Then, the concentration of the target liquid is measured according to the optical path length of the optical path and Lambert-Beer's law. Among them, the optical path length of the optical path is determined by the distance between the two detection ends.

[0003] Since the target liquid is directly added to the detection ends, before replacing the target liquid, the detection ends must be cleaned to remove the target liquid on the detection ends. In the prior art, the detection ends are wiped with dust-free paper or paper with high requirements to remove the target liquid on the detection ends.

[0004] However, when wiping the detection ends with paper, it is easy for shredded paper scraps to adhere to the detection ends, affecting the detection accuracy of the liquid concentration. Further, wiping the detection ends with paper is a relatively cumbersome process, with complex user operations, low automation and intelligence levels. In addition, the end face of the detection end is small, and the user's hand is prone to fatigue after long-term wiping of the detection end. Summary of the Utility Model

[0005] The purpose of this application is to provide a trace detection device, which ensures the detection accuracy of the liquid concentration, has simple operations, does not require manual intervention, and will not cause hand fatigue due to long-term wiping of the detection ends, with high automation and intelligence levels.

[0006] The embodiments of this application are implemented as follows:

[0007] This application provides a trace detection device, which includes a first detection unit, a second detection unit, and a gas output unit. Among them, a first detection end is provided on the first detection unit, a second detection end is provided on the second detection unit, and a detection gap for accommodating the target liquid is formed between the first detection end and the second detection end. The gas output unit has an air outlet, and the gas output unit is used to output gas through the air outlet to clean the first detection end and the second detection end.

[0008] In one embodiment, the air outlet is aligned with the detection gap.

[0009] In one embodiment, the gas output unit includes an air pump and a gas output pipeline; wherein one end of the gas output pipeline is connected to the air pump, and the other end of the gas output pipeline is a gas outlet of the gas output unit.

[0010] In one embodiment, the micro-amount detection device further includes a liquid injection unit; wherein the liquid injection unit has a liquid injection port, and the liquid injection unit is used to inject liquid into the detection gap through the liquid injection port.

[0011] In one embodiment, the liquid injection unit includes a liquid storage component and a liquid injection pipeline; wherein one end of the liquid injection pipeline is connected to the liquid storage component, and the other end of the liquid injection pipeline is a liquid injection port.

[0012] In one embodiment, the trace detection device further includes a suction unit; wherein the suction unit has a suction port and a collecting element, and the suction unit is used to suck the liquid in the first detection end, the second detection end and the detection gap into the collecting element through the suction port.

[0013] In one embodiment, the suction unit further includes a suction element and a suction pipeline; wherein one end of the suction pipeline is connected to the collecting element through the suction element, and the other end of the suction pipeline is a suction port.

[0014] In one embodiment, the trace detection device further includes a recovery unit, and the recovery unit is used to receive the liquid blown off by the gas output unit.

[0015] In one embodiment, the first detection unit includes a detection element and an output optical conduit, and the second detection unit includes a light source and an incident optical conduit; wherein one end of the output optical conduit is connected to the detection element, and the other end of the output optical conduit is connected to the first detection end; one end of the incident optical conduit is connected to the light source, and the other end of the incident optical conduit is connected to the second detection end.

[0016] In one embodiment, the trace detection device also includes a fixing unit, which includes a fixing plate, an output optical bracket and an incident optical bracket; wherein the fixing plate is arranged on the top surface of the detection element; the output optical bracket is arranged on the fixing plate and has a first clamping portion; the incident optical bracket is arranged on the fixing plate and has a second clamping portion; the first clamping portion and the second clamping portion form a preset gap, the other end of the output optical conduit is clamped on the first clamping portion and the first detection end extends into the preset gap; the other end of the incident optical conduit is clamped on the second clamping portion and the second detection end extends into the preset gap.

[0017] The beneficial effects of this application compared with the prior art are:

[0018] The present application provides a micro-detection device, which is provided with a gas output unit; when cleaning the detection end in the micro-detection device, the gas on the detection end is blown off by outputting gas through the gas output unit. It can be seen that in the present application, the liquid on the detection end is cleaned by a non-artificial intervention and direct contact method; among them, when cleaning the detection end by the method in the present application, no consumables such as dust-free paper are required, and the cost is low; at the same time, no impurities such as shredded paper will adhere to the detection end, ensuring the detection accuracy of the liquid concentration. Further, the method for cleaning the detection end in the present application is simple to operate, does not require artificial intervention, and will not cause hand fatigue due to long-term wiping of the detection end, and has a high degree of automation and intelligence. In addition, the micro-detection device in the present application can fully automate the micro-detection operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic structural diagram of a micro-detection device shown in an embodiment of the present application;

[0021] Figure 2 It is a schematic structural diagram of a gas output unit shown in an embodiment of the present application;

[0022] Figure 3 For Figure 2 It is a partial enlarged schematic diagram at position A in

[0023] Figure 4 It is a schematic structural diagram of a liquid injection unit shown in an embodiment of the present application;

[0024] Figure 5 For Figure 4 It is a partial enlarged schematic diagram at position B in

[0025] Figure 6 It is a schematic structural diagram of a first detection unit, a second detection unit and a fixing unit shown in an embodiment of the present application;

[0026] Figure 7 It is a schematic structural diagram of an incident optical bracket and an exit optical bracket shown in an embodiment of the present application;

[0027] Figure 8 For Figure 7 It is a partial enlarged schematic diagram at position C in

[0028] Reference numerals:

[0029] 1 - Micro detection device; 10 - First detection unit; 11 - Detection element; 12 - Output optical catheter; 20 - Second detection unit; 21 - Light source; 22 - Input optical catheter; 30 - Gas output unit; 31 - Air pump; 32 - Gas output pipeline; 40 - Detection gap; 50 - Liquid injection unit; 51 - Liquid storage part; 52 - Liquid injection pipeline; 60 - Fixing unit; 61 - Fixing plate; 62 - Output optical bracket; 63 - Input optical bracket; 64 - Preset gap; 70 - Recovery unit; 110 - First detection end; 210 - Second detection end; 310 - Air outlet; 510 - Liquid injection port; 621 - First fixing part; 622 - First clamping part; 631 - Second fixing part; 632 - Second clamping part. Detailed implementation manners

[0030] The terms "first", "second", "third", etc. are only used for distinguishing descriptions, do not represent the arrangement serial numbers, and cannot be understood as indicating or implying relative importance.

[0031] In addition, the terms "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0032] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "inside", "outside", "left", "right", "above", "below", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0033] In the description of the present application, unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements.

[0034] Next, the technical solutions of the present application will be clearly and completely described with reference to the drawings.

[0035] The present application provides a micro detection device 1, which can be a micro spectrophotometer and is used to measure the concentration of a target liquid. Please refer to Figure 1, which is a schematic structural diagram of the trace detection device 1 shown in an embodiment of the present application. As Figure 1 shown, in this embodiment, the trace detection device 1 includes a first detection unit 10, a second detection unit 20, and a gas output unit 30; a first detection end 110 is provided on the first detection unit 10, a second detection end 210 is provided on the second detection unit 20, and a detection gap 40 for accommodating the target liquid is formed between the first detection end 110 and the second detection end 210; the gas output unit 30 has an air outlet 310, and the gas output unit 30 is used to output gas through the air outlet 310 to clean the first detection end 110 and the second detection end 210. Wherein, the first detection end 110 and / or the second detection end 210 can move, and the distance between the first detection end 110 and the second detection end 210 can be adjusted by moving the first detection end 110 and / or the second detection end 210.

[0036] In practice, before measuring the concentration of the target liquid, the distance between the first detection end 110 and the second detection end 210 is adjusted to the target value. After the adjustment is completed, the target liquid can be added into the detection gap 40. After the addition is completed, under the action of liquid tension, the target liquid will adhere to the first detection end 110 and the second detection end 210, and at the same time, a liquid column will be formed in the detection gap 40. At this time, if the second detection unit 20 emits an optical signal, an optical path will be formed between the first detection unit 10 and the second detection unit 20, and then the concentration of the target liquid will be measured according to the optical path length of the optical path and the Lambert-Beer law. Among them, the optical path length of the optical path is determined by the distance between the two detection ends. After measuring the concentration of the above-mentioned target liquid, in order to avoid contaminating the target liquid to be measured next time, it is necessary to clean the first detection end 110 and the second detection end 210 to remove the target liquid on the first detection end 110 and the second detection end 210. Among them, when cleaning, high-pressure gas can be output from the air outlet 310 of the gas output unit 30 to the first detection end 110 and the second detection end 210, and the high-pressure gas is used to blow off the target liquid on the first detection end 110 and the second detection end 210. After being blown off, the above process can be repeated to measure the concentration of another target liquid.

[0037] As can be seen from the above, in the present application, the liquid on the detection end is cleaned by a direct contact method without manual intervention. When cleaning the detection end by the method in the present application, consumables such as dust-free paper are not required, and the cost is low. At the same time, impurities such as shredded paper will not adhere to the detection end, ensuring the detection accuracy of the liquid concentration. Further, the method for cleaning the detection end in the present application is simple to operate, without manual intervention and without causing hand fatigue due to long-term wiping of the detection end, and has a high degree of automation and intelligence. In addition, the micro-detection device 1 in the present application can fully realize automatic operation of micro-detection.

[0038] Please refer to Figure 2 , which is a schematic structural diagram of the gas output unit 30 shown in an embodiment of the present application. Please refer to Figure 3 , which is Figure 2 A partial enlarged schematic diagram of the position A in Figure 2 . As shown in Figure 3 , in this embodiment, the gas output unit 30 includes an air pump 31 and a gas output pipeline 32. One end of the gas output pipeline 32 is connected to the air pump 31, and the other end of the gas output pipeline 32 is the air outlet 310 of the gas output unit 30. As shown in

[0039] , the air outlet 310 is aligned with the detection gap 40.

[0039] In this embodiment, when the gas output unit 30 outputs high-pressure gas to the first detection end 110 and the second detection end 210, the high-pressure gas output by the air pump 31 is output to the first detection end 110 and the second detection end 210 through the gas output pipeline 32 and the air outlet 310, and the gas output method is simple. In addition, in this embodiment, the air outlet 310 is aligned with the detection gap 40, which to a certain extent ensures that the high-pressure gas can blow off the target liquid on the first detection end 110 and the second detection end 210 at the same time, ensuring the cleaning effect.

[0040] In another embodiment, the gas output unit 30 can move along the arrangement direction of the first detection end 110, the detection gap 40, and the second detection end 210, and the air outlet 310 continuously outputs high-pressure gas during the movement to blow off the target liquid on the first detection end 110 and the second detection end 210. Exemplarily, in this embodiment, the gas output unit 30 can move by means of a guide rail slider.

[0041] In this embodiment, by moving the gas output unit 30, it is ensured that the target liquid on the first detection end 110 and the second detection end 210 can be fully blown off, avoiding liquid residue from contaminating the subsequent target liquid and affecting the liquid detection accuracy.

[0042] As shown in Figure 2As shown, the trace detection device 1 further includes a recovery unit 70 for receiving the liquid blown off by the gas output unit 30. Specifically, as Figure 2 shown, the recovery unit 70 may be located below the detection gap 40. When the gas output unit 30 blows off the target liquid on the first detection end 110 and the second detection end 210, the blown-off liquid will enter the recovery unit 70.

[0043] In this embodiment, the target liquid is uniformly recovered by the recovery unit 70 to prevent the liquid from splashing everywhere.

[0044] Please refer to Figure 4 , which is a schematic structural diagram of the liquid injection unit 50 shown in an embodiment of the present application. Please refer to Figure 5 , which is Figure 4 a partial enlarged schematic diagram of B in Figure 4 shown. In this embodiment, the trace detection device 1 further includes a liquid injection unit 50 having a liquid injection port 510; wherein, the liquid injection unit 50 includes a liquid storage member 51 and a liquid injection pipeline 52. One end of the liquid injection pipeline 52 is connected to the liquid storage member 51, and the other end of the liquid injection pipeline 52 is the liquid injection port 510. The liquid injection unit 50 is used to inject liquid into the detection gap 40 through the liquid injection port 510. As Figure 5 shown, the liquid injection port 510 is aligned with the detection gap 40.

[0045] Before measuring the concentration of the target liquid, the target liquid can be added into the detection gap 40 through the liquid injection unit 50. Among them, when adding the target liquid into the detection gap 40 through the liquid injection unit 50, the target liquid in the liquid storage member 51 flows into the detection gap 40 through the liquid injection pipeline 52 and the liquid injection port 510. After the injection is completed, the concentration of the target liquid is measured by the method in the above embodiment. After the measurement is completed, the first detection end 110 and the second detection end 210 are cleaned to remove the target liquid on the first detection end 110 and the second detection end 210. However, in practice, the viscosity of some target liquids is relatively large, and simply outputting high-pressure gas through the gas output unit 30 may not be able to completely remove the target liquid. Then, at this time, high-pressure gas can be output to the first detection end 110 and the second detection end 210 through the gas output unit 30 to blow off some of the target liquid on the first detection end 110 and the second detection end 210; then the cleaning liquid is added into the detection gap 40 through the liquid injection unit 50. Exemplarily, the above cleaning liquid can be TE buffer solution; after the addition is completed, high-pressure gas is output to the first detection end 110 and the second detection end 210 again to blow off the cleaning liquid and the target liquid on the first detection end 110 and the second detection end 210; then the cleaning liquid is added into the detection gap 40 through the liquid injection unit 50 again. After the addition is completed, high-pressure gas is output to the first detection end 110 and the second detection end 210 again, and the above process is repeated continuously until no target liquid remains on the first detection end 110 and the second detection end 210.

[0046] In this embodiment, by using the cleaning liquid to dilute the target liquid with a relatively large viscosity, the viscosity of the target liquid is reduced, so that the target liquid can be more easily blown off from the detection end, improving the cleaning effect on the detection end.

[0047] In another embodiment, the micro-detection device 1 further includes a suction unit (not shown in the figure), and the suction unit has a suction port; among them, the suction unit includes a suction element, a collection element, and a suction pipeline. One end of the suction pipeline is connected to the collection element through the suction element, and the other end of the suction pipeline is the suction port. The suction unit is used to suck the liquid in the first detection end 110, the second detection end 210, and the detection gap 40 into the collection element through the suction port. Exemplarily, the above suction element can be a hydraulic pump; the collection element can be a collection bottle.

[0048] In this embodiment, after detecting the concentration of the target liquid, the target liquid can be aspirated into the collection element by the aspiration unit to facilitate the recycling of the target liquid; after aspiration, the first detection end 110 and the second detection end 210 can be cleaned in the manner of the above embodiment. Among them, when aspirating the target liquid by the aspiration unit, under the action of the aspiration element, the target liquid is aspirated into the collection element through the aspiration port and the aspiration pipeline.

[0049] Please refer to Figure 6 , which is a schematic structural diagram of the first detection unit 10, the second detection unit 20, and the fixing unit 60 shown in an embodiment of the present application. Please refer to Figure 7 , which is a schematic structural diagram of the incident optical bracket 63 and the exit optical bracket 62 shown in an embodiment of the present application. Please refer to Figure 8 , which is Figure 7 The partial enlarged schematic diagram at C in

[0050] As Figure 6 shown, the first detection unit 10 includes a detection element 11 and an exit optical duct 12, and the second detection unit 20 includes a light source 21 and an incident optical duct 22; among them, one end of the exit optical duct 12 is connected to the detection element 11, and the other end of the exit optical duct 12 is connected to the first detection end 110; one end of the incident optical duct 22 is connected to the light source 21, and the other end of the incident optical duct 22 is connected to the second detection end 210.

[0051] As Figure 6 , Figure 7 and Figure 8As shown, the trace detection device 1 further includes a fixing unit 60, and the fixing unit 60 includes a fixing plate 61, an outgoing optical bracket 62 and an incoming optical bracket 63; the fixing plate 61 is disposed on the top surface of the detection element 11; the outgoing optical bracket 62 has a first fixing portion 621 and a first clamping portion 622, and the incoming optical bracket 63 has a second fixing portion 631 and a second clamping portion 632; the first fixing portion 621 and the first clamping portion 622 are distributed in an L shape, and the second fixing portion 631 and the second clamping portion 632 are distributed in an L shape; the outgoing optical bracket 62 is disposed on the fixing plate 61 through the first fixing portion 621, and the incoming optical bracket 63 is disposed on the fixing plate 61 through the second fixing portion 631; the first clamping portion 622 and the second clamping portion 632 are arranged in parallel to form a preset gap 64, the other end of the outgoing optical duct 12 is clamped on the first clamping portion 622 and the first detection end 110 extends into the preset gap 64; the other end of the incoming optical duct 22 is clamped on the second clamping portion 632 and the second detection end 210 extends into the preset gap 64. Wherein, the first fixing portion 621 and / or the second fixing portion 631 can be slidably disposed on the fixing plate 61 by means of a guide rail slider, etc., so as to facilitate the adjustment of the size of the detection gap 40; a first through hole (not shown in the figure) can be provided on the first clamping portion 622, and the outgoing optical duct 12 can be clamped in the first through hole; a second through hole (not shown in the figure) can be provided on the second clamping portion 632, and the incoming optical duct 22 can be clamped in the second through hole.

[0052] In an embodiment, the air pump 31 of the gas output unit 30 can be disposed on the fixing plate 61.

[0053] Next, taking Figure 4 as an example, the working principle of the trace detection device 1 in the present application will be described:

[0054] Before measuring the concentration of the target liquid, adjust the distance between the first detection end 110 and the second detection end 210 to the target value. After the adjustment is completed, the target liquid can be added into the detection gap 40 through the liquid injection unit 50. After the addition is completed, under the action of liquid tension, the target liquid will adhere to the first detection end 110 and the second detection end 210, and at the same time, a liquid column will be formed in the detection gap 40. At this time, if the light source 21 emits an optical signal, an optical path will be formed in the incident optical duct 22, the second detection end 210, the target liquid, the first detection end 110, and the outgoing optical duct 12. The optical signal emitted by the light source 21 can enter the detection element 11 through the above optical path. Then, the detection element 11 measures the concentration of the target liquid according to the optical path length of the optical path and the Lambert-Beer law. After the measurement is completed, if it is necessary to recover the target liquid, the target liquid is sucked into the collection element through the suction unit; if it is not necessary to recover the target liquid, the first detection end 110 and the second detection end 210 are cleaned. When cleaning, if the viscosity of the target liquid is low, high-pressure gas is directly output to the first detection end 110 and the second detection end 210 through the gas output unit 30, and the target liquid on the first detection end 110 and the second detection end 210 is blown off into the recovery unit 70 by outputting the high-pressure gas; if the viscosity of the target liquid is high, first, high-pressure gas is output to the first detection end 110 and the second detection end 210 through the gas output unit 30, and part of the target liquid on the first detection end 110 and the second detection end 210 is blown off into the recovery unit 70; then, the cleaning liquid is added into the detection gap 40 through the liquid injection unit 50; after the addition is completed, high-pressure gas is output to the first detection end 110 and the second detection end 210 again, and the cleaning liquid and the target liquid on the first detection end 110 and the second detection end 210 are blown off into the recovery unit 70; then, the above process is continuously repeated until no target liquid remains on the first detection end 110 and the second detection end 210.

[0055] It should be noted that in the above embodiments, the first detection unit 10 and the second detection unit 20 can be placed horizontally or vertically, and the placement method does not affect the use of the above cleaning method.

[0056] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A trace detection device, characterized in that, The micro-amount detection device comprises: A first detection unit and a second detection unit, wherein the first detection unit is provided with a first detection end, the second detection unit is provided with a second detection end, and a detection gap for accommodating a target liquid is formed between the first detection end and the second detection end; A gas output unit, wherein the gas output unit has a gas outlet, and the gas output unit is used to output gas through the gas outlet to clean the first detection end and the second detection end.

2. The micro detection device according to claim 1, characterized in that, The air outlet is aligned with the detection gap.

3. The micro detection device according to claim 1, characterized in that, The gas output unit comprises: air pump; A gas output pipeline, one end of which is connected to the air pump, and the other end of which is the gas outlet of the gas output unit.

4. The micro-detection device according to claim 1, characterized in that, The micro-amount detection device also includes: The liquid injection unit has a liquid injection port, and the liquid injection unit is used to inject liquid into the detection gap through the liquid injection port.

5. The micro-detection device according to claim 4, characterized in that, The liquid injection unit comprises: Liquid storage parts; A liquid injection pipeline, one end of which is connected to the liquid storage component, and the other end of which is the liquid injection port.

6. The micro detection device according to claim 1, characterized in that, The micro-amount detection device also includes: A suction unit is provided with a suction port and a collecting element, and is used for sucking the liquid in the first detection end, the second detection end and the detection gap into the collecting element through the suction port.

7. The micro detection device according to claim 6, characterized in that, The suction unit also includes: A suction element and a suction pipeline, one end of the suction pipeline is connected to the collecting element through the suction element, and the other end of the suction pipeline is the suction port.

8. The micro detection device according to claim 1, characterized in that The trace detection device also includes a recovery unit, which is used to receive the liquid blown off by the gas output unit.

9. The micro detection device according to claim 1, wherein The first detection unit comprises: Detection element; An output optical conduit, one end of which is connected to the detection element, and the other end of which is connected to the first detection end; The second detection unit comprises: light source; An incident optical conduit, one end of which is connected to the light source, and the other end of which is connected to the second detection end.

10. The micro detection device according to claim 9, characterized in that, The trace detection device also includes a fixing unit; The fixing unit comprises: A fixing plate, the fixing plate being arranged on the top surface of the detection element; An output optical bracket, which is arranged on the fixing plate and has a first clamping portion; An incident optical bracket, which is disposed on the fixing plate and has a second clamping portion; The first clamping portion and the second clamping portion form a preset gap, the other end of the exit optical conduit is clamped on the first clamping portion and the first detection end extends into the preset gap; the other end of the incident optical conduit is clamped on the second clamping portion and the second detection end extends into the preset gap.

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