A device for detecting the active of a detergent

Abstract

The application relates to the technical field of dishwashing liquid detection, and discloses a dishwashing liquid active substance detection device which comprises a machine box, an automatic sampling and pretreatment module, a multi-modal detection module, an environment simulation cabin and an intelligent control system are arranged in the machine box; the automatic sampling and pretreatment module is arranged in the left region of the machine box and comprises a sample container, a peristaltic pump, a multi-way valve, an ultrasonic homogenizer, a quantitative sample distribution turntable and a sampling pipeline; the sample container is sequentially connected with the peristaltic pump through the sampling pipeline. The dishwashing liquid active substance detection device realizes multi-dimensional comprehensive detection of the dishwashing liquid active substance in terms of content and efficiency by integrating four detection modes, realizes active substance performance evaluation under different use conditions through the environment simulation cabin, realizes full-process automatic detection through internal regionalization layout and stepwise height setting of the machine box, and has the advantages of comprehensive detection dimension, high automation degree and accurate and reliable detection results.

Description

Technical Field

[0001] This invention relates to the field of detergent detection technology, and more particularly to a device for detecting active ingredients in detergents. Background Technology

[0002] Dishwashing liquid is a commonly used cleaning product in daily life. Its active ingredient content directly affects the foaming performance, detergency, and emulsification effect of dishwashing liquid. Therefore, accurate detection of active ingredients in dishwashing liquid is an important part of production quality control and formula development.

[0003] Existing detergent active ingredient detection devices have the following main shortcomings: First, the detection dimensions are limited; existing devices mostly use a single detection principle for detection, such as only measuring the content of active ingredients by spectrophotometer or only measuring the concentration of surfactant by surface tension meter. They cannot simultaneously obtain multi-dimensional performance indicators such as the foaming performance and emulsification ability of active ingredients, and the detection results are difficult to fully reflect the actual performance of active ingredients in use.

[0004] Second, the environmental adaptability is poor; the existing device lacks systematic control over environmental parameters such as detection temperature and pH value, while the surface tension reduction ability and foaming performance of active ingredients are significantly affected by environmental factors. The detection results under a single condition cannot simulate the actual performance of detergent in different usage scenarios (such as cold water washing, hot water washing, acidic or alkaline environment).

[0005] Third, the degree of automation is limited; the sample dilution, homogenization and other pretreatment operations of the existing device still require manual intervention, making it difficult to achieve full automation from sampling to detection output. The error introduced by manual operation is large and the detection efficiency is low.

[0006] Fourth, there is a lack of multi-indicator collaborative evaluation capabilities; the existing equipment mostly outputs single numerical values, which cannot comprehensively and simultaneously evaluate the "content" and "efficacy" of active substances, making it difficult to meet the needs of modern production and R&D. Summary of the Invention

[0007] The technical problem to be solved by the present invention is that the existing active substance detection devices have the following drawbacks: they have a single detection dimension, cannot simultaneously obtain multi-dimensional active substance efficacy indicators, lack environmental parameter control, and have a low degree of automation. Therefore, we propose a detergent active substance detection device.

[0008] To achieve the above objectives, this application adopts the following technical solution: a detergent active ingredient detection device, comprising a chassis, wherein an automatic sample introduction and pretreatment module, a multimodal detection module, an environmental simulation chamber, and an intelligent control system are arranged inside the chassis; the automatic sample introduction and pretreatment module is located in the left side area of ​​the chassis, and includes a sample container, a peristaltic pump, a multi-way valve, an ultrasonic homogenizer, a quantitative sampling turntable, and a sample introduction pipeline; the sample container is sequentially connected to the peristaltic pump, the multi-way valve, and the ultrasonic homogenizer through the sample introduction pipeline; the drain port of the ultrasonic homogenizer is connected to the inlet port of the quantitative sampling turntable; the multimodal detection... The module is located in the central area of ​​the chassis and includes a near-infrared spectroscopy detection unit, a surface tension detection unit, a foam analysis detection unit, and a conductivity detection unit. The four detection units are arranged in parallel and are all connected to the sample outlet of the quantitative sampling turntable, sharing the same sample to be tested. The environmental simulation chamber covers the outside of the multimodal detection module. The environmental simulation chamber is equipped with a temperature control unit and a pH adjustment unit. The intelligent control system includes a main control chip, a touch screen, and a wireless transmission module. The main control chip is electrically connected to the automatic sample introduction and pretreatment module, the multimodal detection module, and the environmental simulation chamber.

[0009] Preferably, the near-infrared spectroscopy detection unit includes a near-infrared light source, a spectrometer, and a detector. The near-infrared light emitted by the near-infrared light source is spectrated by the spectrometer and then irradiates the sample to be tested in the sample cell. The detector receives the spectral signal after transmission or reflection from the sample.

[0010] Preferably, the surface tension detection unit uses a bubble pressure method or a ring method surface tension sensor, which is immersed in the sample to be tested in the sample cell to detect the surface tension value of the sample in real time.

[0011] Preferably, the foam analysis and detection unit includes a foam generator and an image acquisition unit. The foam generator is located at the bottom of the sample cell to introduce gas into the sample to generate foam, and the image acquisition unit is located on the side of the sample cell to acquire foam images and analyze the foam height and half-life.

[0012] Preferably, the conductivity detection unit includes an AC impedance measurement circuit and at least one pair of electrodes. The electrodes are inserted into the sample to be tested in the sample cell, and the AC impedance measurement circuit is electrically connected to the electrodes for measuring the conductivity of the sample to be tested.

[0013] Preferably, the temperature control unit includes a thermoelectric cooler, a temperature sensor, and a temperature control circuit. The thermoelectric cooler is attached to the inner wall of the environmental simulation chamber. The signal output terminal of the temperature sensor is connected to the input terminal of the temperature control circuit, and the control output terminal of the temperature control circuit is connected to the control terminal of the thermoelectric cooler.

[0014] Preferably, the pH adjustment unit includes a micro-liquid pump, a pH sensor, and at least two storage bottles, which respectively store acid and alkali solutions. The inlet of the micro-liquid pump is connected to the storage bottle, and the outlet of the micro-liquid pump is connected to the sample cell. The signal output terminal of the pH sensor is connected to the main control chip.

[0015] Preferably, the intelligent control system further includes a data storage module and an anomaly warning module. The data storage module is used to store detection data and standard curves, and the anomaly warning module is used to issue a warning signal when the detection data exceeds a preset threshold.

[0016] Preferably, the chassis is further provided with an automatic cleaning module, which includes a cleaning fluid storage tank, a cleaning pump and a waste liquid collection tank. The cleaning fluid storage tank is connected to the cleaning pump through a pipeline, and the outlet of the cleaning pump is connected to the sample pool and pipeline of each detection unit. The waste liquid collection tank is connected to the drain port of each detection unit through a pipeline.

[0017] Preferably, the chassis has a shock-absorbing base at the bottom, a cooling fan on the side wall, and a touch screen on the front.

[0018] The technical effects and advantages of this invention are as follows: 1. By integrating four detection methods—near-infrared spectroscopy, surface tension detection, foam analysis, and conductivity detection—into a single device, and using the same sample across all four detection units, this invention can simultaneously acquire multi-dimensional data such as active ingredient content, surface tension reduction capability, foaming performance, and ionic properties. Compared to existing devices based on a single detection principle, this invention achieves a comprehensive evaluation of the "content + efficacy" of detergent active ingredients.

[0019] 2. By setting up an environmental simulation chamber and its internal temperature control and pH adjustment units, the temperature can be precisely controlled within the range of 15-60℃, and the pH can be automatically adjusted within the range of pH 3-11. This enables the simulation detection of the performance of active ingredients under different temperatures and pH conditions, and the test results are closer to the actual use scenarios of detergents.

[0020] 3. The automatic sample injection and pretreatment module enables automatic sample dilution, ultrasonic homogenization, and quantitative sample separation, eliminating errors introduced by manual operation. The intelligent control system coordinates the operation of each module, realizing full automation from sample injection, pretreatment, multimodal detection to data output, which greatly improves detection efficiency and result consistency.

[0021] 4. The system stores historical test data and standard curves through a data storage module, and issues timely warnings when test data is abnormal through an anomaly warning module, providing data support for quality control and formula development in detergent production. Attached Figure Description

[0022] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a schematic diagram of the overall external structure of the present invention; Figure 2 This is a top view of the internal module layout structure of the present invention; Figure 3 This is a side-view three-dimensional layout diagram of the internal module structure of the present invention; Figure 4 This is a side view three-dimensional layout diagram of some of the internal modules of the present invention; Figure 5 This is a schematic diagram of the automatic sample introduction and pretreatment module of the present invention; Figure 6 This is a top view of the multimodal detection module of the present invention; Figure 7 This is a schematic diagram of the environmental simulation cabin structure from below according to the present invention; Figure 8 This is a schematic diagram of the intelligent control system structure of the present invention; Figure 9 This is a schematic diagram of the automatic cleaning module structure of the present invention.

[0023] Illustration: 1. Chassis; 2. Vibration damping base; 3. Cooling fan; 4. Touch screen; 10. Automatic sample introduction and pretreatment module; 11. Sample container; 12. Peristaltic pump; 13. Multi-port valve; 14. Ultrasonic homogenizer; 15. Quantitative dispensing turntable; 16. Sample introduction tubing; 20. Multimodal detection module; 21. Near-infrared spectroscopy detection unit; 211. Near-infrared light source; 212. Spectrometer; 213. Detector; 22. Surface tension detection unit; 221. Surface tension sensor; 23. Foam analysis and detection unit; 231. Foam generator; 232. Image acquisition unit; 24. Conductivity detection unit; 241. Electrode; 242. AC impedance measurement circuit; 25. Sample cell; 30. Environmental simulation chamber; 31. Temperature control unit; 311. Semiconductor cooling chip; 312. Temperature sensor; 32. pH adjustment unit; 321. Micro-liquid pump; 322. pH sensor; 323. Storage bottle; 40. Intelligent control system; 41. Main control chip; 42. Data storage module; 43. Anomaly warning module; 44. Wireless transmission module; 50. Automatic cleaning module; 51. Cleaning fluid storage tank; 52. Cleaning pump; 53. Waste liquid collection tank. Detailed Implementation

[0024] According to the technical solution of the present invention, without changing the essential spirit of the present invention, those skilled in the art can propose various interchangeable structural methods and implementations. Therefore, the following detailed embodiments and accompanying drawings are merely exemplary descriptions of the technical solution of the present invention, and should not be regarded as the entirety of the present invention or as a limitation or restriction of the technical solution of the present invention.

[0025] Reference Figure 1 - Figure 9 As shown, the present invention provides a technical solution: a detergent active ingredient detection device, including a chassis 1, a shock-absorbing base 2 at the bottom of the chassis 1, a cooling fan 3 on the side wall of the chassis 1, and a touch screen display 4 on the front of the chassis 1.

[0026] The interior of the chassis 1 is divided into three longitudinal zones—left, middle, and right—based on fluid flow and ease of operation: the left zone is the sample introduction and pretreatment zone, the middle zone is the detection zone, and the right zone is the control and cleaning zone. Chassis 1 houses an automatic sample introduction and pretreatment module 10, a multimodal detection module 20, an environmental simulation chamber 30, an intelligent control system 40, and an automatic cleaning module 50.

[0027] The automatic sample injection and pretreatment module 10 is located in the left side area of ​​the chassis 1, and includes a sample container 11, a peristaltic pump 12, a multi-way valve 13, an ultrasonic homogenizer 14, a quantitative sample dispensing turntable 15, and a sample injection pipeline 16.

[0028] The sample container 11 is located on the front left side of the chassis 1. The sample container 11 is fixed by a clamp bracket on the inner side of the front wall. The bottom of the sample container 11 is suspended 220mm above the bottom plate of the chassis 1. The bottle mouth of the sample container 11 protrudes from the front wall of the chassis 1, making it convenient for operators to change samples from the outside.

[0029] The peristaltic pump 12 is located behind the sample container 11, 80 mm from the front wall and 30 mm from the left side wall. The peristaltic pump 12 is fixed to the base plate of the chassis 1 by an L-shaped sheet metal bracket, with the center of the pump head 80 mm from the base plate. The peristaltic pump 12 is driven by a stepper motor, and different flow rates are achieved by controlling the rotation speed.

[0030] The multi-way valve 13 is located to the right rear of the peristaltic pump 12, 80 mm from the left side wall, and in the center of the left side area of ​​the chassis. The multi-way valve 13 is fixed to the inner wall of the left side of the chassis 1 by a triangular rib bracket, and the center of the valve body of the multi-way valve 13 is 140 mm from the bottom plate. The multi-way valve 13 is a solenoid valve with one inlet and multiple outlets, having a common inlet and multiple branch outlets.

[0031] The ultrasonic homogenizer 14 is located to the right of the multi-way valve 13, adjacent to the left outer wall of the environmental simulation chamber 30. The ultrasonic homogenizer 14 is fixed to the base plate of the chassis 1 via a gantry-type suspension bracket. The gantry-type suspension bracket includes two upright cylindrical columns on the base plate and a horizontal support plate spanning the top of the two columns. The upper edge of the treatment tank of the ultrasonic homogenizer 14 is flanged and secured to the center hole of the horizontal support plate, with the entire treatment tank suspended below the support plate. The bottom of the treatment tank is suspended 110 mm above the base plate of the chassis 1, and the ultrasonic transducer is vertically inserted from the top of the treatment tank.

[0032] The quantitative sampling turntable 15 is positioned directly below the processing tank of the ultrasonic homogenizer 14. The turntable 15 is a flattened cylinder with six quantitative orifices evenly distributed around its internal circumference. The base of the quantitative sampling turntable 15 is secured to the base plate of the chassis 1 with screws, and the top surface of the turntable 15 is 45mm from the base plate. The central inlet of the quantitative sampling turntable 15 faces upwards and is coaxially connected to the drain outlet at the bottom of the processing tank of the ultrasonic homogenizer 14 via a short vertical pipe. The sample outlet of the quantitative sampling turntable 15 is horizontally positioned to the right, extending through the left side wall of the environmental simulation chamber 30 and above the sample cell 25 of the multimodal detection module 20.

[0033] The sample inlet line 16 connects the sample container 11, peristaltic pump 12, multi-way valve 13, ultrasonic homogenizer 14, and quantitative dispensing turntable 15 in sequence. Specifically, the outlet of the sample container 11 is connected to the inlet of the peristaltic pump 12 via the sample inlet line 16; the outlet of the peristaltic pump 12 is connected to the inlet of the multi-way valve 13 via a pipe; the outlet of the multi-way valve 13 is connected to the inlet of the ultrasonic homogenizer 14's processing tank via a pipe; the outlet of the ultrasonic homogenizer 14's processing tank is connected to the inlet of the quantitative dispensing turntable 15 via a vertical rigid pipe; and the outlet of the quantitative dispensing turntable 15 is connected to the sample cell 25 of the multimodal detection module 20 via a through-chamber pipe. All of the above connecting pipes are collectively referred to as the sample inlet line 16.

[0034] The multimodal detection module 20 is located in the central area of ​​the chassis 1 and is enclosed within the environmental simulation chamber 30. The multimodal detection module 20 includes a near-infrared spectroscopy detection unit 21, a surface tension detection unit 22, a foam analysis detection unit 23, and a conductivity detection unit 24. These four detection units are arranged in parallel around the sample cell 25 within the environmental simulation chamber 30, sharing the same sample. The sample cell 25 is a square, transparent quartz glass container located at the very center of the environmental simulation chamber 30.

[0035] The near-infrared spectroscopy detection unit 21 includes a near-infrared light source 211, a spectrometer 212, and a detector 213. The near-infrared light source 211 and the detector 213 are positioned on opposite sides of the sample cell 25, emitting light horizontally towards each other. The near-infrared light emitted by the near-infrared light source 211 is dispersed by the spectrometer 212 and then passes horizontally through the sample to be tested in the sample cell 25. The detector 213 receives the spectral signal transmitted through the sample and determines the content of active substances by analyzing characteristic absorption peaks.

[0036] The surface tension detection unit 22 employs a bubble pressure method surface tension sensor 221. The surface tension sensor 221 is vertically inserted below the surface of the sample liquid from above the sample cell 25 to detect the surface tension value of the sample in real time. In other embodiments, the surface tension detection unit 22 may also employ a ring-type surface tension sensor, including a ring, a connecting rod, and a weighing sensor. The ring is suspended below the weighing sensor via the connecting rod. The ring is immersed in the sample liquid in the sample cell 25. The weighing sensor detects the maximum pulling force when the ring leaves the liquid surface, thereby calculating the surface tension value.

[0037] The foam analysis and detection unit 23 includes a foam generator 231 and an image acquisition unit 232. The foam generator 231 is a porous sintered plate, located at the bottom of the sample cell 25, which generates foam by introducing gas into the sample through an external air pump. The image acquisition unit 232 is a miniature CCD camera, located on the right side of the sample cell 25, used to acquire foam images and obtain foam height and half-life data through image analysis.

[0038] The conductivity detection unit 24 includes an AC impedance measurement circuit 242 and at least one pair of electrodes 241. The electrodes 241 are horizontally inserted into the sample to be tested from the right side wall of the sample cell 25. The AC impedance measurement circuit 242 is in close contact with the right outer wall of the sample cell 25 and is electrically connected to the electrodes 241. It is used to measure the AC impedance of the sample to be tested at different frequencies, thereby calculating the conductivity.

[0039] The environmental simulation chamber 30 is an insulated shell that covers the outside of the multimodal detection module 20 and is located in the central area of ​​the chassis 1. The shell material of the environmental simulation chamber 30 is polyurethane insulation board, and the inner wall is stainless steel plate.

[0040] The temperature control unit 31 includes a thermoelectric cooler 311, a temperature sensor 312, and a temperature control circuit. The thermoelectric cooler 311 is attached to the rear inner wall of the environmental simulation chamber 30, and the temperature sensor 312 is located in the middle of the left inner wall of the environmental simulation chamber 30. The temperature control circuit is located on the left side of the outer side of the rear wall of the environmental simulation chamber 30, with the circuit board 120mm from the bottom plate of the chassis and a 10mm heat dissipation gap between the circuit board and the rear wall of the chassis. The signal output terminal of the temperature sensor 312 is connected to the input terminal of the temperature control circuit, and the control output terminal of the temperature control circuit is connected to the control terminal of the thermoelectric cooler 311. Through the cooling / heating switching of the thermoelectric cooler 311, the temperature can be accurately controlled within the range of 15-60℃, with a temperature control accuracy of ±0.5℃. The temperature control circuit communicates with the main control chip 41 via a four-core ribbon cable, receiving the target temperature command issued by the main control chip 41 and uploading real-time temperature data.

[0041] The pH adjustment unit 32 includes a micro-liquid pump 321, a pH sensor 322, and at least two storage bottles 323. The storage bottles 323 are located on the front right side of the chassis 1, and are fixed to the inner wall of the right side of the chassis 1 by a snap-on bottle holder. The bottom of the storage bottles 323 is suspended 150mm above the base plate. The two storage bottles 323 contain acid and alkali solutions respectively, with the bottle openings facing downwards. The micro-liquid pump 321 is located behind the storage bottles 323, and is fixed to the outer right side of the environmental simulation chamber 30 by a sheet metal bracket. The center of the pump body of the micro-liquid pump 321 is 120mm from the base plate. The inlet of the micro-pump 321 is connected to the storage bottle 323 via a pipeline, and the outlet of the micro-pump 321 is connected to the upper opening of the sample cell 25 via a through-chamber pipeline passing through the right side wall of the environmental simulation chamber 30. The pH sensor 322 is vertically inserted into the sample cell 25 from the top of the environmental simulation chamber 30, and the signal output terminal of the pH sensor 322 is connected to the main control chip 41. The main control chip 41 controls the micro-pump 321 to add acid or alkali solution to the sample cell 25 according to the feedback signal of the pH sensor 322, so as to achieve automatic adjustment within the pH range of 3-11.

[0042] The intelligent control system 40 is located on the right rear side of the chassis 1. The main control chip 41 is fixed to a PCB board, which is mounted on a bracket on the rear inner wall of the chassis 1 with studs, 10mm away from the rear wall. The data storage module 42 is soldered onto the PCB board and is used to store test data and standard curves. The anomaly warning module 43 includes a buzzer and a red LED, located on the inner side of the rear panel of the chassis 1, and is used to issue an audible and visual warning signal when the test data exceeds a preset threshold. The wireless transmission module 44 is attached to the upper right corner of the PCB board with the antenna facing outwards, and is used to upload test data to a cloud server or mobile terminal APP. The touch display 4 is a 7-inch capacitive touch screen, embedded in the front panel of the chassis 1, providing a visual operation interface, supporting customized settings of the test scheme and real-time display of test results.

[0043] The main control chip 41 is electrically connected to the automatic sample introduction and pretreatment module 10, the multimodal detection module 20, the environmental simulation chamber 30, and the automatic cleaning module 50, respectively, to coordinate the operation sequence of each module.

[0044] The automatic cleaning module 50 is located on the right rear side inside the chassis 1, and includes a cleaning fluid storage tank 51, a cleaning pump 52, and a waste liquid collection tank 53.

[0045] The cleaning fluid storage tank 51 is located on the rear left side of the chassis 1. The cleaning fluid storage tank 51 is fixed on the bracket on the rear wall. The bottom of the cleaning fluid storage tank 51 is suspended 80mm above the bottom plate, and the tank opening is facing upward.

[0046] The cleaning pump 52 is located in the middle of the rear side of the chassis 1. The cleaning pump 52 is fixed to the bottom plate of the chassis 1 by screws. The center of the pump head of the cleaning pump 52 is 50mm away from the bottom plate.

[0047] Waste liquid collection tank 53 is located on the rear right side of the chassis 1, with the tank opening facing upwards. A liquid level sensor is installed on the side wall of the waste liquid collection tank 53 to detect the liquid level. When the liquid level is too high, an alarm is triggered by the abnormal warning module 43.

[0048] The outlet of the cleaning solution storage tank 51 is connected to the inlet of the cleaning pump 52 via a pipeline. The outlet of the cleaning pump 52 is connected via a branch pipeline to the cleaning inlet of the multi-way valve 13, the top rinsing nozzle of the sample cell 25, and the top rinsing port of the ultrasonic homogenizer 14 treatment tank. The drain outlet of the multi-way valve 13, the bottom drain outlet of the sample cell 25, and the bottom drain outlet of the ultrasonic homogenizer 14 treatment tank are connected to the top inlet of the waste liquid collection tank 53 via a manifold. A one-way valve is installed between the manifold and the top inlet of the waste liquid collection tank 53 to prevent backflow of waste liquid.

[0049] Working principle: After the user selects the detection mode and starts the detection via the touch screen 4, the main control chip 41 controls the peristaltic pump 12 to start, quantitatively extracting the detergent sample to be tested from the sample container 11. After the flow path is switched by the multi-way valve 13, it is sent to the processing tank of the ultrasonic homogenizer 14 for homogenization treatment to eliminate air bubbles and inhomogeneity in the sample.

[0050] After homogenization, the sample flows into the quantitative dispensing turntable 15 via a vertical tube under gravity. The turntable 15 then quantitatively dispenses the sample into the sample cells 25 of the near-infrared spectroscopy detection unit 21, the surface tension detection unit 22, the foam analysis detection unit 23, and the conductivity detection unit 24. The four detection units simultaneously begin detection: the near-infrared spectroscopy detection unit 21 acquires active ingredient content data, the surface tension detection unit 22 acquires surface tension values, the foam analysis detection unit 23 acquires foam height and half-life data, and the conductivity detection unit 24 acquires conductivity data.

[0051] To simulate different usage environments, the main control chip 41 adjusts the detection temperature to the set value through the temperature control unit 31 and adjusts the sample acidity / alkalinity to the set value through the pH adjustment unit 32, and repeats the above detection under different environmental conditions.

[0052] The detection data from each detection unit is transmitted to the main control chip 41. After data fusion processing, the detection results are displayed on the touch screen 4 and uploaded to the cloud server or mobile terminal APP via the wireless transmission module 44. The detection data is also stored in the data storage module 42. When the detection data exceeds the preset threshold, the anomaly warning module 43 issues an audible and visual warning signal.

[0053] After the test is completed, the main control chip 41 controls the automatic cleaning module 50 to start. The cleaning pump 52 pumps the cleaning liquid in the cleaning liquid storage tank 51 to the cleaning inlet of the multi-way valve 13, the top rinsing nozzle of the sample cell 25 and the top rinsing port of the ultrasonic homogenizer 14 processing tank for simultaneous rinsing. The cleaning waste liquid is discharged into the waste liquid collection tank 53 through the manifold, completing the fully automated test process.

[0054] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A detergent active ingredient detection device, comprising a housing (1), characterized in that: The chassis (1) is equipped with an automatic sample injection and pretreatment module (10), a multimodal detection module (20), an environmental simulation chamber (30), and an intelligent control system (40). The automatic sample injection and pretreatment module (10) is located in the left side area of ​​the chassis (1), including a sample container (11), a peristaltic pump (12), a multi-way valve (13), an ultrasonic homogenizer (14), a quantitative sample dispensing turntable (15), and a sample injection line (16). The sample container (11) is connected to the peristaltic pump (12), the multi-way valve (13), and the ultrasonic homogenizer (14) in sequence through the sample injection line (16). The drain port of the ultrasonic homogenizer (14) is connected to the inlet port of the quantitative sample dispensing turntable (15). The multimodal detection module (20) is located in the middle area of ​​the chassis (1), including a near-infrared spectroscopy detection unit (21), a surface tension detection unit (22), a foam analysis detection unit (23) and a conductivity detection unit (24). The four detection units are connected in parallel and are all connected to the sample outlet of the quantitative sample turntable (15) and share the same sample to be tested. The environmental simulation chamber (30) is covered by the multimodal detection module (20), and the environmental simulation chamber (30) is equipped with a temperature control unit (31) and a pH adjustment unit (32). The intelligent control system (40) includes a main control chip (41), a touch screen (4) and a wireless transmission module (44). The main control chip (41) is electrically connected to the automatic sample introduction and pretreatment module (10), the multimodal detection module (20) and the environmental simulation chamber (30), respectively.

2. The detergent active ingredient detection device according to claim 1, characterized in that: The near-infrared spectroscopy detection unit (21) includes a near-infrared light source (211), a spectrometer (212), and a detector (213). The near-infrared light emitted by the near-infrared light source (211) is irradiated onto the sample to be tested in the sample cell (25) after being split by the spectrometer (212). The detector (213) receives the spectral signal after the sample is transmitted or reflected.

3. The detergent active ingredient detection device according to claim 1, characterized in that: The surface tension detection unit (22) uses a bubble pressure method or a ring method surface tension sensor (221). The surface tension sensor (221) is immersed in the sample to be tested in the sample cell (25) to detect the surface tension value of the sample to be tested in real time.

4. The detergent active ingredient detection device according to claim 1, characterized in that: The foam analysis and detection unit (23) includes a foam generator (231) and an image acquisition unit (232). The foam generator (231) is located at the bottom of the sample cell (25) to introduce gas into the sample to generate foam. The image acquisition unit (232) is located on the side of the sample cell (25) to acquire foam images and analyze foam height and half-life.

5. The detergent active ingredient detection device according to claim 1, characterized in that: The conductivity detection unit (24) includes an AC impedance measurement circuit (242) and at least one pair of electrodes (241). The electrodes (241) are inserted into the sample to be tested in the sample cell (25). The AC impedance measurement circuit (242) is electrically connected to the electrodes (241) to measure the conductivity of the sample to be tested.

6. The detergent active ingredient detection device according to claim 1, characterized in that: The temperature control unit (31) includes a thermoelectric cooler (311), a temperature sensor (312), and a temperature control circuit. The thermoelectric cooler (311) is attached to the inner wall of the environmental simulation chamber (30). The signal output terminal of the temperature sensor (312) is connected to the input terminal of the temperature control circuit, and the control output terminal of the temperature control circuit is connected to the control terminal of the thermoelectric cooler (311).

7. The detergent active ingredient detection device according to claim 1, characterized in that: The pH adjustment unit (32) includes a micro-liquid pump (321), a pH sensor (322), and at least two storage bottles (323). The storage bottles (323) store acid and alkali solutions respectively. The inlet of the micro-liquid pump (321) is connected to the storage bottle (323), and the outlet of the micro-liquid pump (321) is connected to the sample cell (25). The signal output terminal of the pH sensor (322) is connected to the main control chip (41).

8. The detergent active ingredient detection device according to claim 1, characterized in that: The intelligent control system (40) further includes a data storage module (42) and an anomaly warning module (43). The data storage module (42) is used to store detection data and standard curves, and the anomaly warning module (43) is used to issue a warning signal when the detection data exceeds a preset threshold.

9. The detergent active ingredient detection device according to claim 1, characterized in that: The chassis (1) is also equipped with an automatic cleaning module (50). The automatic cleaning module (50) includes a cleaning fluid storage tank (51), a cleaning pump (52), and a waste liquid collection tank (53). The cleaning fluid storage tank (51) is connected to the cleaning pump (52) through a pipeline. The outlet of the cleaning pump (52) is connected to the sample pool (25) and pipeline of each detection unit. The waste liquid collection tank (53) is connected to the drain port of each detection unit through a pipeline.

10. The detergent active ingredient detection device according to claim 1, characterized in that: The bottom of the chassis (1) is provided with a shock-absorbing base (2), the side wall of the chassis (1) is provided with a cooling fan (3), and the front of the chassis (1) is provided with a touch screen (4).

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