Equipment for detecting electrolyte and conductivity of milk

Abstract

The invention discloses equipment for detecting milk electrolyte and conductivity, and belongs to the technical field of medical instruments. The equipment is technically characterized by comprising a sample adding system, a sample conveying track, a control module and a detection main body, the sample adding system is composed of a telescopic arm provided with an encoder, a feeding pipe and a sample adding needle, and accurate sample adding is achieved. The sample conveying track guarantees stable conveying of samples through the steering conveying mechanism, the conveying belt and the sample adding frame. The control module is internally provided with a high-performance microprocessor and a memory and is responsible for processing instructions and data. The detection main body integrates a sample processing module, an ISE module, a calcium ion determination module and a flow conductivity determination module, and performs detection by using ultrasonic waves, an indirect ion selective electrode method, an atomic absorption spectrometry and a conductivity electrode method respectively. According to the device, direct and simultaneous detection of electrolyte and conductivity in non-uniform solutions such as milk is realized, the detection efficiency is remarkably improved, and the misdiagnosis rate is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a device for detecting electrolytes and conductivity of milk. Background Art

[0002] Lactation mastitis (LM) is an acute inflammatory disease common in lactating women, posing a serious threat to the health of both mother and infant. According to statistics, LM affects up to 33% of lactating women and may lead to the cessation of breastfeeding, which is crucial for infant growth and immune development. The diagnosis of LM currently relies primarily on symptoms, signs, and nonspecific laboratory inflammatory markers, such as white blood cell count and C-reactive protein (CRP) levels. However, these methods often fail to confirm the diagnosis until the disease is at a late stage and lack the sensitivity and specificity for early diagnosis.

[0003] Existing electrolyte detection technology primarily utilizes indirect ion-selective electrodes (ISE), which are suitable for testing homogeneous, low-viscosity solutions such as aqueous solutions, serum, or plasma. However, for samples with higher viscosity and a higher fat content, such as milk, existing ISE technology is not suitable because direct sample addition can cause the instrument needle to clog. Furthermore, existing conductivity meters require sample pretreatment before testing, which not only increases operational complexity but can also cause sample distortion, affecting the accuracy of test results.

[0004] Existing technologies have significant problems in detecting electrolytes and conductivity in milk. First, there is no readily available equipment that can directly detect the electrolytes and conductivity of heterogeneous solutions such as milk. Second, existing equipment cannot meet the effective linear range and minimum detection line of the biological characteristics of milk, resulting in inaccurate test results. In addition, if electrolytes and conductivity are to be detected simultaneously, the sample needs to be pre-treated and performed separately on two different devices, which is not only cumbersome to operate but also increases the risk of sample distortion and error. Therefore, there is an urgent need for a device that can directly detect electrolytes and conductivity in milk to improve the accuracy and efficiency of diagnosis and reduce misdiagnosis or missed diagnosis caused by clinicians' empirical diagnosis and treatment. Summary of the Invention

[0005] The purpose of the present invention is to solve the above problems and provide a device for detecting electrolytes and conductivity of milk to solve the problems in the prior art that it is impossible to directly and simultaneously detect the electrolytes and conductivity of homogeneous solutions such as milk.

[0006] In order to achieve the above object, the technical solution of the present invention is as follows: a device for detecting electrolytes and conductivity of milk, comprising:

[0007] A sample loading system, comprising a telescopic arm, a feeding tube and a sample loading needle, wherein the telescopic arm is equipped with an encoder, and the encoder controls the horizontal and vertical movement of the telescopic arm;

[0008] A sample transport track, comprising a steering transport mechanism, a transport belt, and a sample loading rack; the steering transport mechanism comprises a set of precision gears and a motor;

[0009] A control module, wherein the control module includes a high-performance microprocessor and a memory;

[0010] The detection body includes a sample processing module, an ISE module, a calcium ion determination module, and a flow conductivity determination module;

[0011] The sample processing module has an ultrasonic processing function for dispersing chylomicron;

[0012] The ISE module contains four independent indirect ion selective electrodes for detecting Na + , K + , Cl- and Ca 2+ Ion concentration, each electrode is equipped with a reference electrode;

[0013] The calcium ion determination module uses atomic absorption spectroscopy technology, has a highly sensitive detection element, and has automatic calibration and quality control functions;

[0014] The flow conductivity measurement module is equipped with a pair of high-precision platinum electrodes, a built-in temperature sensor, and an automatic cleaning function.

[0015] By adopting the above-mentioned technical solution, the telescopic arm of the present invention is equipped with an encoder, which can accurately control horizontal and vertical movement, ensuring that the sample needle accurately reaches the predetermined position, thereby improving the accuracy and efficiency of sample addition. The steering transmission mechanism of the sample transmission track adopts precision gears and motors to ensure smooth steering of the sample. The coordinated use of the conveyor belt and the sample rack further ensures the stability and accuracy of the sample during the transmission process. The control module is equipped with a high-performance microprocessor and memory, which can process control commands and test data in real time, and save test parameters and historical results at the same time, making it convenient for users to retrieve and analyze them at any time, providing strong support for the intelligent operation and data management of the equipment.

[0016] The detection subject of the present invention is the core part of the present invention. The ultrasonic processing function of the sample processing module effectively disperses chylomicron fat, reduces its interference with the measurement results, and improves the accuracy of the detection. The ISE module contains four independent indirect ion selective electrodes, which are respectively for Na in milk. + , K + , Cl- and Ca 2+Ion concentration is detected, and each electrode is equipped with a reference electrode to ensure measurement stability. The calcium ion measurement module uses atomic absorption spectrometry technology, equipped with a highly sensitive detection element and automatic calibration quality control functions, capable of accurately measuring low concentrations of calcium ions, ensuring the reliability of measurement results. The flowing conductivity measurement module is equipped with high-precision platinum electrodes and a built-in temperature sensor, automatically performing conductivity calibration. It also has an automatic cleaning function to prevent sample carryover and cross-contamination, ensuring the accuracy of conductivity measurements and the long-term stability of the equipment. The collaborative operation of these modules enables efficient and accurate detection of milk electrolytes and conductivity, providing a powerful tool for the early diagnosis and treatment of diseases such as mastitis during lactation, and has important clinical application value.

[0017] Furthermore, the telescopic arm is made of a lightweight but strong aluminum alloy material, and the feeding tube is made of medical-grade silicone material; the sampling needle has a 2.5 mm aperture, is made of 316 stainless steel, and has a polytetrafluoroethylene coating on the inner wall;

[0018] By adopting the above-mentioned technical solution, the sampling needle of the present invention has an aperture of no less than 2mm. This is designed to take into account the characteristics of the sample, especially for high-fat liquids or highly lipemic samples. The larger aperture effectively prevents needle clogging, which is crucial for samples with high viscosity or high fat content, such as milk. This allows for direct sample addition without the need for additional pre-treatment, thus avoiding sample distortion and detection errors caused by untreated samples.

[0019] Furthermore, the ISE module measurement range is: Na + :5-150mmol / L, K + : 1-10mmol / L, Cl-: 5-135mmol / L, Ca 2+ :0.5-5mmol / L.

[0020] By adopting the above technical solution, the ISE module of the present invention is further limited in the measurement range to meet the detection requirements of complex biological samples such as milk. + The measurement range is 5-150mmol / L, K + is 1-10mmol / L, Cl- is 5-135mmol / L, Ca 2+ The range is 0.5-5mmol / L, which covers the physiological concentration range of common electrolytes in breast milk. This not only ensures that the ISE module can accurately and sensitively detect the concentration of various ions in breast milk, but also provides reliable test results even when the ion concentration is low, thereby improving the accuracy of the test and enhancing the applicability of the test, so that it can meet the needs of different samples and different test conditions.

[0021] Furthermore, the measurement range of the calcium ion measurement module is 0.5-5mmol / L.

[0022] By adopting the above technical solution, the calcium ion determination module of the present invention is set to a measurement range of 0.5-5mmol / L, which enables the calcium ion determination module to efficiently and accurately detect the calcium ion concentration in milk and provide stable and reliable detection results even at low concentrations.

[0023] Furthermore, the ISE module has a double-barrel structure, and the double-barrel mechanism includes a reaction tank and a cleaning chamber. The reaction tank is used to accommodate milk samples, and the cleaning chamber is used to clean the sample injection needle. The bottom of the double-barrel structure is provided with a detection instrument. The top of the detection instrument of the ISE module and the flow conductivity measurement module is respectively provided with an indirect ion selective electrode and an electrode pair. The electrode pair is used to measure the resistance to the passage of sample current in the reaction tank.

[0024] By adopting the above technical solution, the ISE module of the present invention adopts a double-barrel structure, which includes a reaction tank and a cleaning chamber. The reaction tank is specifically used to accommodate milk samples to ensure the stability and accuracy of the samples during the detection process. The cleaning chamber is used to clean the sampling needle, effectively preventing sample residue and cross-contamination, and improving the repeatability and reliability of the detection. In this way, the sampling needle can be thoroughly cleaned after each test, providing a clean environment for the next test, thereby ensuring the purity and accuracy of the test results.

[0025] A detection instrument is set at the bottom of the double-cylinder structure. The top of the detection instrument of the ISE module is equipped with an indirect ion-selective electrode, while the top of the detection instrument of the flow conductivity measurement module is equipped with an electrode pair. This can accurately measure the resistance to the passage of sample current in the reaction cell, thereby achieving high-precision detection of ion concentration and conductivity in milk.

[0026] Furthermore, the reaction tank contains a microporous filter membrane and a stirring device. The microporous filter membrane can effectively separate chylomicron and other impurities in milk, and the stirring device can ensure that the milk sample is evenly distributed during the measurement process.

[0027] By adopting the above technical solution, the present invention sets a microporous filtration membrane and a stirring device in the reaction tank. The microporous filtration membrane can effectively separate chylomicron fat and other impurities in milk. The fat and other impurities in milk will interfere with the measurement of the ion selective electrode and the conductivity electrode, resulting in deviations in the test results. The presence of the microporous filtration membrane is like a fine barrier, blocking these interfering factors outside, ensuring the purity of the sample, so that the detection instrument can more accurately measure the concentration and conductivity of the target ion.

[0028] At the same time, the stirring device ensures the uniform distribution of the milk sample during the measurement process. During the detection process, the uniformity of the sample is also important for obtaining accurate measurement results. The stirring device can fully mix the various components in the milk sample, avoiding measurement errors caused by sample stratification or local uneven concentration.

[0029] Furthermore, the ISE module integrates signal amplification and conversion circuits, and the ISE module also has an automatic calibration function.

[0030] By adopting the above technical solution, the ISE module of the present invention integrates signal amplification and conversion circuits and has an automatic calibration function. The integration of signal amplification and conversion circuits enables the ISE module to effectively amplify weak electrode signals and convert them into digital signals that can be processed by the microprocessor, thereby improving the detection capability of low-concentration ions and ensuring high sensitivity and high accuracy of the detection results. This is very useful for detecting low-content ions in milk, such as K + and Ca 2+ .

[0031] Furthermore, the reaction cell of the flow conductivity measurement module is designed to enable the electrode to fully contact the sample to ensure accurate measurement of conductivity. After the measurement is completed, the sample addition needle moves to the cleaning chamber again for cleaning.

[0032] By adopting the above technical solution, the reaction cell in the flow conductivity measurement module of the present invention enables the electrode and the sample to fully contact each other. The measurement of conductivity depends on the good contact between the electrode and the sample. Any poor contact or uneven distribution of the sample can lead to measurement errors. In addition, after the measurement is completed, the sampling needle automatically moves to the cleaning chamber for cleaning. By automatically cleaning the sampling needle, the present invention effectively avoids these problems and ensures that each measurement is carried out under clean conditions, thereby improving the accuracy and repeatability of the test results.

[0033] Furthermore, it is characterized in that: the detection body also includes a data analysis module, a heat sink and a base;

[0034] The data analysis module can present the test results to the user in the form of a graph or table, and display them through the display screen of the control module; the heat plate is used to preheat the milk sample before testing; and a rubber pad is provided at the bottom of the base.

[0035] By adopting the above technical solution, the data analysis module of the present invention enables the detection results to be presented to the user in the form of intuitive graphics or tables, which are presented through the display screen of the control module, greatly improving the readability and comprehensibility of the data.

[0036] The preheating of the vapor chamber ensures that the sample is tested in an optimal state, thereby improving the accuracy and reliability of the test. Furthermore, the use of the vapor chamber can reduce measurement errors caused by sample temperature differences, ensuring consistency in test results.

[0037] In summary, the present invention has the following beneficial effects:

[0038] 1. The sampling needle of this invention has an aperture of no less than 2mm, effectively preventing clogging. This is crucial for samples with high viscosity or fat content, such as milk. The sampling needle is made of 316 stainless steel and coated with an anti-wall coating on the inner wall, which reduces sample adhesion, reduces the risk of clogging, and ensures sample fluidity. The ISE module adopts a dual-barrel design, including a reaction cell and a cleaning chamber. This not only improves detection accuracy but also simplifies the operation process and equipment maintenance. The presence of the cleaning chamber allows the sampling needle to be cleaned immediately after each use, reducing maintenance time and labor intensity.

[0039] 2. This invention utilizes an integrated design concept, integrating the sample loading system, sample transport track, control module, and detection unit into a single unit, achieving a fully automated process for milk electrolyte and conductivity testing. This not only saves laboratory space but also reduces human error through automated operation, improving test accuracy and repeatability. The pretreatment function of the sample processing module, the ion-selective electrode technology of the ISE module, and the direct measurement technology of the conductivity module collectively ensure the purity of sample data and the reliability of test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 2 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0041] Figure 2 This is a front perspective overall structural diagram of an embodiment of the present invention;

[0042] Figure 3 2 is a schematic diagram of the structure of a sampling needle in an embodiment of the present invention;

[0043] Figure 4 2 is a schematic diagram of the sample transmission track structure in an embodiment of the present invention;

[0044] Figure 5 This is a schematic diagram of a double-tube structure in an embodiment of the present invention;

[0045] Figure 6 Schematic diagram of the cross-sectional structure of the sample adding needle in an embodiment of the present invention.

[0046] In the figure: 1. Sampling system; 101. Telescopic arm; 102. Feed tube; 103. Sampling needle; 2. Sample transmission track; 201. Steering transmission mechanism; 202. Conveyor belt; 203. Sampling rack; 3. Control module; 4. Detection body; 401. Sample processing module; 402. ISE module; 403. Flow conductivity measurement module; 404. Calcium ion measurement module; 5. Reaction pool; 6. Cleaning chamber; 7. Detection instrument; 8. Electrode; 9. Data analysis module; 10. Heat sink; 11. Rubber pad; 12. Microporous filter membrane; 13. Stirring device; 14. Base. DETAILED DESCRIPTION

[0047] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described in detail below in conjunction with the embodiments of the present invention and the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0048] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the embodiments.

[0049] Example: Figure 1-6 As shown, a device for detecting electrolytes and conductivity of milk includes a sample loading system 1, a sample transmission track 2, a control module 3, and a detection body 4. The sample loading system 1 includes a telescopic arm 101, a feeding tube 102, and a sample loading needle 103. The telescopic arm 101 is made of a lightweight but sturdy aluminum alloy material to ensure strength and reduce weight. The telescopic arm 101 is equipped with an encoder to provide accurate position feedback signals to ensure that the sample loading needle 103 can accurately reach the predetermined position. The telescopic arm 101 is designed with multiple degrees of freedom, including horizontal and vertical movement, to accommodate detection components at different positions and angles. The feeding tube 102 of the present invention is made of medical-grade silicone material to ensure biocompatibility when in contact with the milk sample, and is used to provide the milk sample to the sampling needle 103. The sampling needle 103 has a 2.5 mm aperture and is manufactured using precision laser drilling technology to ensure that even milk samples with a high fat content will not cause clogging. The 316 stainless steel material of the sampling needle 103 provides excellent corrosion resistance, and the inner wall coating is made of FDA-approved non-adhesive material. The present invention uses polytetrafluoroethylene (PTFE) to reduce adhesion and loss of the sample on the inner wall of the sampling needle 103.

[0050] The sample transmission track 2 includes a steering transmission mechanism 201, a transmission belt 202 and a sample loading rack 203. The steering transmission mechanism 201 is composed of a set of precision gears and motors to ensure smooth steering of the sample during the transmission process; the transmission belt 202 is made of chemically resistant and wear-resistant polyurethane material, and the surface treatment is smooth to reduce the friction between the sample and the belt surface. The transmission belt 202 can adjust the position of the sample loading rack 203 in real time to ensure the accuracy of the position of the sample loading needle 103 during the sample transmission process; the sample loading rack 203 adopts a modular design and can be adjusted according to different sizes and shapes of the sample loading needle 103 to ensure the stability of the sample loading needle 103 during the transmission process. The sample loading needle 103 is designed with a fixing clamp to adapt to sample loading needles 103 with different apertures and ensure that the sample loading needle 103 will not be displaced or shaken during the transmission process, so that the sample loading needle 103 moves with the movement of the sample loading rack 203.

[0051] The control module 3 includes a high-performance microprocessor for processing control commands and detection data from the user interface in real time, and is equipped with sufficient memory for storing detection parameters and historical results, so that users can retrieve and analyze them at any time.

[0052] The detection body 4 includes a sample processing module 401, an ISE module 402, a calcium ion measurement module 404, a flow conductivity measurement module 403, a data analysis module 9, a heat sink 10 and a base 14;

[0053] The sample processing module 401 has an ultrasonic processing function for dispersing chylomicron fat to reduce its interference with the measurement results.

[0054] ISE module 402: The ISE module 402 comprises four independent indirect ion selective electrodes 8 for detecting Na in milk. + , K + , Cl- and Ca 2+ Ion concentration, the sensitive membrane of each electrode 8 is made of a special plasticized ion selective material, which has high selectivity for specific ions to ensure the specificity and sensitivity of the detection. Each ISE electrode 8 is equipped with a reference electrode 8 to provide a stable potential to ensure the accuracy of the measurement. The ISE module 402 has an integrated signal amplification and conversion circuit to convert the tiny potential changes detected by the electrode 8 into a digital signal for processing by the microprocessor. The ISE module 402 is designed with an automatic calibration function and is calibrated regularly with a standard solution to maintain the accuracy of the measurement. At the same time, the module design is easy to maintain and clean to prevent sample residue and cross contamination. The measurement range of the ISE module 402 is: Na + :5-150mmol / L, K + : 1-10mmol / L, Cl-: 5-135mmol / L, Ca2+ :0.5-5mmol / L.

[0055] Calcium Ion Measurement Module 404: This module uses atomic absorption spectroscopy and other technologies to accurately measure calcium ion concentration in breast milk. Its highly sensitive detection element enables accurate detection of low calcium ion concentrations, and it features automatic calibration and quality control to ensure reliable measurement results. The measurement range of Calcium Ion Measurement Module 404 is 0.5-5 mmol / L.

[0056] Flowing Conductivity Measurement Module 403: This module is equipped with a pair of high-precision electrodes 8, designed to be inserted into the reaction cell 5 to measure the conductivity of milk samples. Electrodes 8 are made of high-purity platinum, offering excellent electrochemical stability and corrosion resistance. A built-in temperature sensor automatically calibrates the conductivity based on the sample temperature, ensuring accurate measurement results. Conductivity measurement results are processed by a built-in signal processor and converted into a digital output signal. The module also features an automatic cleaning function, which automatically cleans the electrodes 8 after each measurement to prevent sample carryover and cross-contamination.

[0057] The data analysis module 9 has powerful data processing capabilities and can process large amounts of data from the ISE module 402, the calcium ion determination module 404 and the flow conductivity determination module 403. The module can quickly convert the detection data into intuitive graphics and tables, including bar graphs of ion concentrations, conductivity change curves, etc. The data analysis module 9 is tightly integrated with the display screen of the control module 3, providing a friendly user interface so that operators can easily view and interpret data. The module supports the storage and export of detection data, allowing users to export data in multiple formats (such as CSV, Excel, etc.) for further analysis and recording.

[0058] The heat spreader 10 is a precise temperature control system that can adjust the heating power according to the preset temperature range to ensure that the sample reaches the ideal temperature state before testing. The heat spreader 10 uses a high-efficiency heating element. The present invention uses a heating wire to evenly heat the sample to avoid local overheating. It is designed with multiple safety protection measures, including overheating protection and temperature abnormality alarm, to ensure the safety of the equipment and samples.

[0059] The base 14 is made of a strong material. The present invention uses high-strength plastic to support all modules of the device and maintain overall stability. The base 14 also includes a shockproof design. The bottom of the present invention is provided with a rubber pad 11 to reduce the impact of external vibration on the accuracy of the device.

[0060] Working principle: After the staff loads the milk sample into the sample container, the operator sets the detection parameters through the control module 3. The sampling system 1 drives the sampling needle 103 deep into the sample by the telescopic arm 101 according to the instructions of the control module 3. The feeding tube 102 transports the sample to the sampling needle 103. After the sampling needle 103 absorbs the sample, the sampling needle 103 is fixed on the sampling rack 203. The sample is sent to the detection body 4 along the sample transmission track 2. During the transmission process, the steering transmission mechanism 201 ensures that the sample moves along the predetermined path. The sampling rack 203 ensures that the sampling needle 103 will not be displaced or shaken, and makes the sampling needle 103 move with the movement of the sampling rack 203.

[0061] After the sample reaches the detection body 4, it first enters the sample processing module 401 to undergo ultrasonic treatment to disperse chylomicrons and reduce their interference with the measurement results. The pre-treated sample enters the ISE module 402, the calcium ion measurement module 404, and the flow conductivity measurement module 403 respectively. The ISE module 402 has a dual-tube structure consisting of a reaction tank 5 and a cleaning chamber 6. The pre-treated sample first enters the reaction tank 5, where the indirect ion selective electrode 8 accurately detects the Na in the milk. + , K + , Cl- and Ca 2+ Ion concentration. The reaction pool 5 is designed to accommodate a sufficient amount of sample for ion concentration measurement, while ensuring that the electrode 8 is in full contact with the sample. After the test is completed, the sample addition needle 103 moves to the cleaning chamber 6 for automatic cleaning. The cleaning chamber 6 is filled with cleaning liquid, which removes sample residues inside and outside the sample addition needle 103 by spraying to ensure the accuracy of the next test. After the pretreated sample enters the calcium ion measurement module 404, the calcium ion measurement module 404 uses corresponding technology to accurately measure the calcium ion concentration. After the measurement is completed, the sample enters the reaction pool 5 of the flow conductivity measurement module 403, and the high-precision electrode 8 measures the conductivity of the sample. The reaction pool 5 of the flow conductivity measurement module 403 is designed to enable the electrode 8 to fully contact the sample to ensure accurate measurement of conductivity. After the measurement is completed, the sample addition needle 103 moves to the cleaning chamber 6 again for cleaning to prepare for the next sample test.

[0062] The microprocessor in the control module 3 processes the test data from the ISE module 402, the calcium ion measurement module 404, and the flow conductivity measurement module 403 in real time and stores the results in memory. The results processed by the data analysis module 9 are displayed to the operator via the display screen of the control module 3, including real-time data and historical trend charts of ion concentration. The heat plate 10 preheats the sample according to the ambient temperature and sample characteristics to ensure that the sample is in optimal condition during testing. The temperature of the heat plate 10 can be adjusted to suit the characteristics of different samples and testing requirements.

[0063] The above specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the embodiments as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A device for detecting electrolytes and conductivity of milk, characterized by: include: A sample loading system (1), comprising a telescopic arm (101), a feeding tube (102) and a sample loading needle (103), wherein the telescopic arm (101) is equipped with an encoder, and the telescopic arm (101) is controlled to move horizontally and vertically by the encoder; A sample transmission track (2), the sample transmission track (2) comprising a steering transmission mechanism (201), a transmission belt (202) and a sample loading rack (203), the steering transmission mechanism (201) comprising a set of precision gears and a motor; A control module (3), wherein the control module (3) includes a high-performance microprocessor and a memory; A detection body (4), the detection body (4) comprising a sample processing module (401), an ISE module (402), a calcium ion determination module (404), and a flow conductivity determination module (403); The sample processing module (401) has an ultrasonic processing function for dispersing chylomicron fat; The ISE module (402) comprises four independent indirect ion selective electrodes (8), which are used to detect Na + , K + , Cl- and Ca 2+ ion concentration, each electrode (8) is equipped with a reference electrode (8); The calcium ion determination module (404) adopts atomic absorption spectrometry technology, has a highly sensitive detection element, and has automatic calibration and quality control functions; The flow conductivity measurement module (403) is equipped with a pair of high-precision platinum electrodes (8), a built-in temperature sensor, and an automatic cleaning function.

2. The detection device according to claim 1, characterized in that: The telescopic arm (101) is made of a lightweight but strong aluminum alloy material, and the feeding tube (102) is made of a medical-grade silicone material; the sample injection needle (103) has a 2.5 mm aperture, is made of 316 stainless steel, and has an inner wall coating of polytetrafluoroethylene;.

3. The detection device according to claim 1, wherein: The ISE module (402) has a measurement range of: Na + :5-150mmol / L, K + :1-10mmol / L、C l -:5-135mmol / L, Ca 2+ :0.5-5mmol / L.

4. The detection device according to claim 1, wherein: The measurement range of the calcium ion measurement module (404) is 0.5-5 mmol / L.

5. The detection device according to claim 1, wherein: The ISE module (402) is a double-barrel structure, comprising a reaction pool (5) and a cleaning chamber (6), wherein the reaction pool (5) is used to accommodate a milk sample, and the cleaning chamber (6) is used to clean the sample injection needle (103). A detection instrument (7) is provided at the bottom of each of the double-barrel structures, and an indirect ion selective electrode (8) and an electrode (8) pair are provided at the top of each of the detection instruments (7) of the ISE module (402) and the flow conductivity measurement module (403), respectively. The electrode (8) pair is used to measure the resistance to the passage of sample current in the reaction pool (5).

6. The detection device according to claim 5, characterized in that: The reaction pool (5) contains a microporous filter membrane (12) and a stirring device (13). The microporous filter membrane (12) can effectively separate chylomicron fat and other impurities in milk, and the stirring device (13) can ensure that the milk sample is evenly distributed during the measurement process.

7. The detection device according to claim 1, characterized in that: The ISE module (402) internally integrates a signal amplification and conversion circuit, and the ISE module (402) also has an automatic calibration function.

8. The detection device according to claim 1, characterized in that: The reaction pool (5) of the flow conductivity measurement module (403) is designed to enable the electrode (8) to fully contact the sample to ensure accurate measurement of the conductivity. After the measurement is completed, the sample injection needle (103) moves again to the cleaning chamber (6) for cleaning.

9. The device for detecting electrolytes and conductivity of milk according to claim 1, characterized in that: The detection body (4) further includes a data analysis module (9), a heat sink (10) and a base (14); The data analysis module (9) can present the test results to the user in the form of a graph or a table, and display the results on the display screen of the control module (3); the heat plate (10) is used to preheat the milk sample before testing; and a rubber pad (11) is provided at the bottom of the base (14).

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