Liquid inspection equipment based on optics

Abstract

The utility model belongs to the technical field of optical detection, and particularly relates to liquid inspection equipment based on optics, which is characterized in that an air inlet pipe is connected with a compression exhaust port of a refrigerating machine through a pipeline, so that cold air can be discharged into a liquid storage tank through the air inlet pipe, and further liquid is quickly cooled; brightness or color in a thermal image of the thermal infrared imager represents different temperature areas, the liquid temperature can be visually displayed, the temperature is fed back to a monitoring end, it is ensured that the temperatures of three sets of detection liquid are consistent, and then the detection precision is improved. The movable frame can horizontally move along the outer side of the supporting frame, so that the three groups of detection liquid can be synchronously measured; the zoom optical projector can deduce the physical properties and components of the fluid by measuring the refractive index of the fluid; meanwhile, the lens angle of the zoom optical projector can be controlled through the small motor on the outer side of the bottom lug plate, so that refraction of the detection liquid is completed by light at different angles, multi-group comparison is facilitated, and the efficient detection effect is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical detection, and in particular relates to a liquid detection device based on optics. Background Art

[0002] Optical liquid analysis is mainly used to measure the concentration of elements in liquid samples. Optical liquid analysis technology is a multidisciplinary field that combines the principles and methods of optics, electronics, chemistry and other disciplines to measure and analyze liquid samples. By exposing the liquid sample to a light source of known wavelength (such as a light-emitting diode LED), the light passes through the sample and interacts with it, and then is detected by a photodiode (PD). The measured response value of the PD is plotted according to the response of the sample with a known concentration to form a calibration curve, and then the concentration of the unknown sample is determined.

[0003] In the prior art, the refractive index of liquid is inversely proportional to temperature. The higher the temperature, the more active the molecules, the smaller the molecular density, and the smaller the refractive index. The refractive index refers to the ratio of the speed of light propagation in a vacuum to the speed of light propagation in the medium. However, the existing liquid cannot ensure consistent temperature during detection, which affects the detection effect. In addition, general liquid detection equipment can only perform one-to-one detection, and cannot perform multiple groups of simultaneous detection, and the efficiency is average.

[0004] Therefore, an optical-based liquid inspection device is designed to solve the above problems. Utility Model Content

[0005] To solve the problems raised in the above background technology. The utility model provides an optical-based liquid inspection device. When the device is in use, three groups of identical inspection liquids can be poured into the liquid storage tank of the inspection table, and then the air intake pipe can be connected to the compression exhaust port of the refrigerator through a pipeline, so that the cold air can be discharged into the liquid storage tank through the air intake pipe, thereby quickly cooling the liquid. At the same time, since multiple groups of infrared thermal imagers are distributed above the inspection table, the infrared thermal imager receives infrared radiation through infrared detectors and optical systems, and converts it into electrical signals; then, the electrical signals are processed and converted to form a visual thermal image; the brightness or color in the thermal image represents different temperature areas, which can intuitively display the liquid temperature, and the temperature is fed back to the monitoring end to ensure that the temperatures of the three groups of inspection liquids are consistent, thereby improving the inspection accuracy.

[0006] During the detection process, the stepper motor on the inside of the mobile platform is started through the control end. The running stepper motor drives the driving shaft to rotate, and the driving shaft drives the limit gear connected to its outer wall to rotate. Since the limit gear is meshed with the embedded rack, under the gear transmission, the movable frame can move horizontally along the outside of the support frame, so that the three groups of detection liquids can complete synchronous measurement; the zoom optical projector can infer the physical properties and composition of the fluid by measuring its refractive index, and then determine the concentration of the detection liquid; at the same time, the lens angle of the zoom optical projector can be controlled by a small motor on the outside of the bottom ear plate, so that the light can refract the detection liquid at different angles, which is convenient for multiple groups of comparison and achieves efficient inspection results.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an optical-based liquid inspection device, including a temperature-controlled and efficient inspection mechanism, wherein the temperature-controlled and efficient inspection mechanism includes a detection table, an air intake pipe, a support frame, a movable table, a zoom optical projector and a refrigerator, wherein the air intake pipe is fixedly connected to both sides of the detection table, the support frame is fixedly connected to the upper end of the detection table, the movable table is slidably connected to the inner side of the top of the support frame, the zoom optical projector is rotatably connected to the bottom of the movable table, and the refrigerator is arranged on the outside of the detection table.

[0008] Preferably, a toggle lever and an infrared thermal imager are further provided on both sides of the top of the detection platform, the toggle lever is rotatably connected to the top of the detection platform, and the infrared thermal imager is threadedly connected to the inner side of the top of the toggle lever.

[0009] Preferably, a stepper motor, a drive shaft and a limit gear are also provided on the inner side of the movable platform, the motor shaft of the stepper motor is fixedly connected to one end of the drive shaft via a coupling, and the outer teeth of the limit gear are meshed with the inner side of the support frame.

[0010] Preferably, an inner side of the support frame is also provided with an embedded rack matched with the outer teeth of the limiting gear.

[0011] Preferably, an ear plate and a small motor are also provided at the bottom of the movable platform, the ear plate is fixedly connected to the bottom of the movable platform, and the motor shaft of the small motor is fixedly connected to one side of the zoom optical projector through a coupling.

[0012] Preferably, the detection platform is further provided with liquid storage tanks inside, and the liquid storage tanks are provided in three groups, and the three groups of liquid storage tanks are arranged at equal intervals inside the detection platform.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the present invention, the air intake pipe is connected to the compression exhaust port of the refrigerator through a pipeline, so that the cold air can be discharged into the liquid storage tank through the air intake pipe, thereby quickly cooling the liquid. At the same time, since multiple groups of infrared thermal imagers are distributed above the test bench, the infrared thermal imagers receive infrared radiation through infrared detectors and optical systems, and convert them into electrical signals; then, the electrical signals are processed and converted to form a visual thermal image; the brightness or color in the thermal image represents different temperature areas, which can intuitively display the liquid temperature, and the temperature is fed back to the monitoring end to ensure that the temperatures of the three groups of test liquids are consistent, thereby improving the inspection accuracy.

[0015] 2. In the utility model, under the gear transmission, the movable frame can move horizontally along the outer side of the support frame, so that three groups of test liquids can complete synchronous measurement; the zoom optical projector can infer the physical properties and components of the fluid by measuring the refractive index of the fluid, and then determine the concentration of the test liquid; at the same time, the lens angle of the zoom optical projector can be controlled by a small motor on the outer side of the bottom ear plate, so that the light can refract the test liquid at different angles, which is convenient for multiple groups of comparison and achieves efficient inspection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the inner side of the top of the support frame in the utility model;

[0019] Figure 3 This is a distribution diagram of the mid-infrared thermal imager of the utility model;

[0020] Figure 4 This is a disassembled diagram of the mobile platform and the supporting platform in the utility model;

[0021] In the figure: 1. Temperature-controlled high-efficiency inspection mechanism; 2. Toggle lever; 3. Infrared thermal imager; 4. Stepper motor; 5. Drive shaft; 6. Limit gear; 7. Embedded rack; 8. Ear plate; 9. Small motor; 10. Liquid storage tank; 11. Inspection table; 12. Air intake pipe; 13. Support frame; 14. Moving table; 15. Zoom optical projector; 16. Refrigerator. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1 As shown:

[0024] An optical-based liquid inspection device. In the prior art, the refractive index of the liquid is inversely proportional to the temperature. The higher the temperature, the more active the molecules, the smaller the molecular density, and the smaller the refractive index. The refractive index refers to the ratio of the speed of light propagation in a vacuum to the speed of light propagation in the medium. However, the existing liquid cannot ensure consistent temperature during inspection, which affects the inspection effect. In addition, general liquid inspection equipment can only perform one-to-one inspection, and cannot perform multiple groups of simultaneous inspections, and the efficiency is average. On this basis, a temperature-controlled and efficient inspection mechanism 1 is added.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown:

[0026] In an optional embodiment: the temperature-controlled high-efficiency inspection mechanism 1 includes a testing platform 11, an air intake pipe 12, a support frame 13, a moving platform 14, a zoom optical projector 15 and a refrigerator 16. The air intake pipe 12 is fixedly connected to both sides of the testing platform 11, the support frame 13 is fixedly connected to the upper end of the testing platform 11, the moving platform 14 is slidably connected to the inner side of the top of the support frame 13, the zoom optical projector 15 is rotatably connected to the bottom of the moving platform 14, the refrigerator 16 is arranged on the outer side of the testing platform 11, and a toggle rod 2 and an infrared thermal imager 3 are also arranged on both sides of the top of the testing platform 11. The toggle rod 2 is rotatably connected to the top of the testing platform 11, and the infrared thermal imager 3 is threadedly connected to the inner side of the top of the toggle rod 2. A liquid storage tank 10 is also arranged inside the testing platform 11, and three groups of liquid storage tanks 10 are arranged, and the three groups of liquid storage tanks 10 are arranged at equal intervals inside the testing platform 11.

[0027] In this embodiment: when the device is in use, three groups of identical test liquids can be poured into the liquid storage tank 10 of the test bench 11, and then the air inlet pipe 12 can be connected to the compression exhaust port of the refrigerator 16 through a pipeline, so that cold air can be discharged into the liquid storage tank 10 through the air inlet pipe 12, thereby quickly cooling the liquid. At the same time, since multiple groups of infrared thermal imagers 3 are distributed above the test bench 11, the infrared thermal imager 3 receives infrared radiation through an infrared detector and an optical system, and converts it into an electrical signal; then, the electrical signal is processed and converted to form a visual thermal image; the brightness or color in the thermal image represents different temperature areas, which can intuitively display the liquid temperature, and the temperature is fed back to the monitoring end to ensure that the temperatures of the three groups of test liquids are consistent, thereby improving the inspection accuracy.

[0028] More specifically:

[0029] like Figure 1 , Figure 3 and Figure 4 As shown:

[0030] In an optional embodiment: a stepper motor 4, a drive shaft 5 and a limit gear 6 are also provided on the inner side of the moving platform 14, the motor shaft of the stepper motor 4 is fixedly connected to one end of the drive shaft 5 through a coupling, the outer teeth of the limit gear 6 are meshed with the inner side of the support frame 13, and the inner side of the support frame 13 is also provided with an embedded rack 7 adapted to the outer teeth of the limit gear 6, and an ear plate 8 and a small motor 9 are also provided at the bottom of the moving platform 14, the ear plate 8 is fixedly connected to the bottom of the moving platform 14, and the motor shaft of the small motor 9 is fixedly connected to one side of the zoom optical projector 15 through a coupling.

[0031] In this embodiment: during the detection process, the stepper motor 4 on the inner side of the moving platform 14 is started through the control end, and the running stepper motor 4 drives the driving shaft 5 to rotate, and the driving shaft 5 drives the limit gear 6 connected to its outer wall to rotate. Since the limit gear 6 and the embedded rack 7 are meshed with each other, under the gear transmission, the movable frame can move horizontally along the outer side of the support frame 13, so that the three groups of detection liquids can complete synchronous measurement; the zoom optical projector 15 can infer the physical properties and components of the fluid by measuring its refractive index, and then determine the concentration of the detection liquid; at the same time, the lens angle of the zoom optical projector 15 can be controlled by the small motor 9 on the outer side of the bottom ear plate 8, so that the light can complete the refraction of the detection liquid at different angles, which is convenient for multiple groups of comparison and achieves efficient inspection effect.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An optical liquid testing device, comprising a temperature-controlled high-efficiency testing mechanism (1), characterized in that: The temperature-controlled high-efficiency inspection mechanism (1) comprises a testing platform (11), an air intake pipe (12), a support frame (13), a movable platform (14), a zoom optical projector (15) and a refrigerator (16); the air intake pipe (12) is fixedly connected to both sides of the testing platform (11); the support frame (13) is fixedly connected to the upper end of the testing platform (11); the movable platform (14) is slidably connected to the inner side of the top of the support frame (13); the zoom optical projector (15) is rotatably connected to the bottom of the movable platform (14); and the refrigerator (16) is arranged on the outer side of the testing platform (11).

2. The optical liquid inspection device according to claim 1, characterized in that: A toggle lever (2) and an infrared thermal imager (3) are also provided on both sides of the top of the detection platform (11); the toggle lever (2) is rotatably connected to the top of the detection platform (11); and the infrared thermal imager (3) is threadedly connected to the inner side of the top of the toggle lever (2).

3. The optical liquid inspection device according to claim 1, characterized in that: A stepper motor (4), a drive shaft (5) and a limit gear (6) are also provided on the inner side of the moving platform (14); the motor shaft of the stepper motor (4) is fixedly connected to one end of the drive shaft (5) via a coupling, and the outer teeth of the limit gear (6) are meshed with the inner side of the support frame (13).

4. The optical liquid inspection device according to claim 3, characterized in that: An inner side of the support frame (13) is also provided with an inner gear rack (7) adapted to the outer teeth of the limit gear (6).

5. The optical liquid inspection device according to claim 1, characterized in that: The bottom of the movable platform (14) is also provided with an ear plate (8) and a small motor (9); the ear plate (8) is fixedly connected to the bottom of the movable platform (14); and the motor shaft of the small motor (9) is fixedly connected to one side of the zoom optical projector (15) via a coupling.

6. The optical liquid testing device according to claim 2, characterized in that: The detection platform (11) is also provided with liquid storage tanks (10) inside. The liquid storage tanks (10) are provided in three groups, and the three groups of liquid storage tanks (10) are arranged at equal intervals inside the detection platform (11).

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