Milk freshness detection device

Abstract

The utility model provides a milk freshness detection device. The milk freshness detection device comprises a milk storage tank, a water pump, a quartz container, a light source and a near-infrared spectrometer, the milk storage tank is used for containing milk to be detected; milk in the milk storage tank is conveyed to the quartz container through the water pump and flows back to the milk storage tank; the light source and the near-infrared spectrometer are respectively arranged on two sides of the quartz container; near infrared rays emitted by the light source penetrate through the milk sample in the quartz container and then are received by the near-infrared spectrometer, and spectral data are collected, so that the freshness of the milk sample can be monitored and analyzed in real time on a production line, the quality of milk in the production process is ensured, and the production efficiency is improved. Delay and errors caused by traditional off-line sampling detection are avoided, the detection efficiency can be greatly improved, and waste of milk in the detection process can be effectively avoided.

Description

Technical Field

[0001] This utility model belongs to the field of food testing technology, and in particular relates to a milk freshness testing device. Background Technology

[0002] Milk, as an important liquid dairy product, is rich in various nutrients such as protein, fat, and lactose, and is an indispensable part of people's daily diet. However, the natural characteristics of milk make it susceptible to factors such as temperature and storage conditions, leading to spoilage or a decline in nutritional value. Therefore, the freshness of milk is crucial in the production, processing, and sales processes, directly affecting consumer health and the product's market competitiveness.

[0003] Traditional methods for testing milk freshness typically require sending samples to a laboratory for analysis. This is not only time-consuming but also prone to sample contamination or loss during the testing process, affecting the final results. Furthermore, laboratory testing methods cannot provide real-time monitoring, making it difficult to meet the demands of modern milk production lines for efficient and accurate testing. On milk bottling lines, changes in milk freshness can directly impact the quality and safety of the finished product.

[0004] With the development of technology, the level of automation in milk production lines has gradually increased, but the application of technology for real-time detection of milk freshness remains relatively lagging. Current technologies mostly employ offline sampling methods to detect milk freshness. While these methods provide some analytical data, they cannot meet the demands for immediacy and accuracy in large-scale industrial milk production, especially on bottling lines where changes in milk freshness can directly affect the quality and safety of the finished product. Therefore, developing a device capable of online real-time detection of milk freshness is of paramount importance. Utility Model Content

[0005] The purpose of this invention is to provide a milk freshness detection device that can solve the technical problem of real-time detection of milk freshness.

[0006] To address the above problems, this utility model provides a milk freshness detection device, comprising:

[0007] The system comprises a milk storage tank, a water pump, a quartz container, a light source, and a near-infrared spectrometer. The milk storage tank is used to hold milk to be tested. The milk in the milk storage tank is pumped to the quartz container by the water pump and then flows back to the milk storage tank. The light source and the near-infrared spectrometer are respectively located on both sides of the quartz container. The near-infrared rays emitted by the light source penetrate the milk sample in the quartz container and are received by the near-infrared spectrometer to collect spectral data.

[0008] Furthermore, in the aforementioned milk freshness detection device, the light source transmits the near-infrared rays to the quartz container via an optical fiber; the near-infrared spectrometer collects the near-infrared rays via the optical fiber.

[0009] Furthermore, the quartz container in the aforementioned milk freshness detection device has optical fiber connectors on both sides; the optical fiber is connected to the optical fiber connectors.

[0010] Furthermore, the aforementioned milk freshness detection device also includes: an electric motor and a stirrer; the electric motor is located at the top of the milk storage tank; the stirrer is located inside the milk storage tank and is connected to the output end of the electric motor.

[0011] Furthermore, the milk storage tank in the aforementioned milk freshness detection device is made of food-grade stainless steel.

[0012] Furthermore, in the aforementioned milk freshness detection device, the water pump pumps the milk into the quartz container via an infusion pipe; the quartz container then returns the milk to the milk storage tank via the infusion pipe.

[0013] Furthermore, the infusion tube in the aforementioned milk freshness detection device is made of food-grade silicone.

[0014] Furthermore, the aforementioned milk freshness detection device also includes: a computer; the computer communicates with the near-infrared spectrometer to process the spectral data.

[0015] Furthermore, the milk storage tank in the aforementioned milk freshness detection device is equipped with a temperature and humidity sensor for monitoring the storage environment of the milk sample.

[0016] The above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0017] Through this embodiment, the freshness of milk samples can be monitored and analyzed in real time on the production line, ensuring the quality of milk during the production process. This avoids the delays and errors caused by traditional offline sampling and testing, significantly improving testing efficiency and effectively preventing waste of milk during the testing process. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram according to an embodiment of the present utility model;

[0019] Figure label:

[0020] 1: Milk storage tank; 2: Water pump; 3: Quartz container; 4: Light source; 5: Near-infrared spectrometer; 6: Fiber optic cable; 7: Electric motor; 8: Stirrer; 9: Infusion tube; 10: Computer. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model. In the description of this utility model, it should be noted that the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] refer to Figure 1 The present invention illustrates an embodiment of a milk freshness detection device, which includes: a milk storage tank 1, a water pump 2, a quartz container 3, a light source 4, and a near-infrared spectrometer 5; wherein the milk storage tank 1 is used to hold the milk to be tested; the milk in the milk storage tank 1 is pumped to the quartz container 3 by the water pump 2 and then flows back to the milk storage tank 1; the light source 4 and the near-infrared spectrometer 5 are respectively arranged on both sides of the quartz container 3; the near-infrared rays emitted by the light source 4 penetrate the milk sample in the quartz container 3 and are received by the near-infrared spectrometer 5 to collect spectral data.

[0023] Milk storage tank 1 is made of food-grade stainless steel, which has good corrosion resistance and heat preservation effect. Temperature and humidity sensors are also installed inside milk storage tank 1 to detect and ensure the stability of the storage environment for milk samples.

[0024] Pump 2 pumps milk into quartz container 3 via infusion tube 9; quartz container 3 then returns the milk to milk storage tank 1 via infusion tube 9. Infusion tube 9 is made of food-grade silicone, ensuring that the milk sample is not contaminated during transport.

[0025] The flow rate of water pump 2 can be adjusted according to the actual production line to ensure the continuity and stability of milk flow. Milk in milk storage tank 1 is pumped into quartz container 3. Due to the excellent light transmittance and chemical stability of quartz material, the milk sample can be protected from external contamination and interference without affecting the detection accuracy.

[0026] Near-infrared radiation has excellent penetrating power, allowing it to penetrate deep into milk samples. By analyzing the spectrum, changes in the composition of the milk sample can be accurately detected, thus determining its freshness. Near-infrared radiation emitted by light source 4 penetrates the milk sample in quartz container 3 and is received by near-infrared spectrometer 5 for spectral analysis. Different components in the milk (such as water, protein, and fat) absorb and reflect light differently. By identifying the absorbance at different wavelengths in the spectrum, it can be determined whether the milk sample has spoiled. No chemical reactions occur during the detection process, and no chemical reagents or contaminants are generated, meeting the requirements of food production. Simultaneously, water pump 2 continuously circulates the milk sample in milk storage tank 1, enabling real-time monitoring of milk freshness.

[0027] To avoid interference from ambient light and ensure the purity and accuracy of the detection signal, the light source 4 transmits near-infrared light to the quartz container 3 through the optical fiber 6; the near-infrared spectrometer 5 collects near-infrared light through the optical fiber 6.

[0028] To allow for flexible adjustments based on different production line needs, a modular design can be adopted. The light source 4 and near-infrared spectrometer 5 can be adapted to different types of milk and production batches to ensure optimal testing results. Furthermore, for easy disassembly and installation, the quartz container 3 has fiber optic connectors on both sides; the optical fiber 6 connects to these connectors.

[0029] This embodiment also includes: an electric motor 7 and a stirrer 8; the electric motor 7 is located at the top of the milk storage tank 1; the stirrer 8 is located inside the milk storage tank 1 and connected to the output end of the electric motor 7. Through the action of the stirrer 8, the milk sample is continuously mixed within the milk storage tank 1, preventing phenomena such as milk fat stratification. A uniformly mixed milk sample ensures the representativeness of the sample in each test, thereby improving the accuracy of the test results.

[0030] This embodiment also includes: a computer 10; the computer 10 communicates with the near-infrared spectrometer to process spectral data and determine the freshness of the milk sample based on the spectral data. The computer 10 has a built-in detection algorithm that can continuously improve its sensitivity and analytical capabilities to changes in the composition of the milk sample through machine learning and other methods, making the detection results more accurate. The results are fed back to the display screen or the production line control system in real time to facilitate decision-making by operators.

[0031] Through this embodiment, the freshness of milk samples can be monitored and analyzed in real time on the production line, ensuring the quality of milk during the production process. This avoids the delays and errors caused by traditional offline sampling and testing, significantly improving testing efficiency and effectively preventing milk waste during the testing process. The modular design and automated control system make operation simple and maintenance convenient. The use of machine learning algorithms can improve the accuracy and intelligence of testing. It meets the requirements of environmental protection and energy conservation and is suitable for the actual needs of large-scale milk production lines.

[0032] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A milk freshness detecting device characterized by comprising: include: Milk storage tank (1), water pump (2), quartz container (3), light source (4) and near-infrared spectrometer (5); The milk storage tank (1) is used to hold the milk to be tested; The milk in the milk storage tank (1) is pumped to the quartz container (3) by the water pump (2) and then flows back to the milk storage tank (1); The light source (4) and the near-infrared spectrometer (5) are respectively disposed on both sides of the quartz container (3); The near-infrared rays emitted by the light source (4) penetrate the milk sample in the quartz container (3) and are received by the near-infrared spectrometer (5) to collect spectral data.

2. The milk freshness detection device according to claim 1, characterized in that: The light source (4) transmits the near-infrared rays to the quartz container (3) through the optical fiber (6); The near-infrared spectrometer (5) collects near-infrared radiation through the optical fiber (6).

3. The milk freshness detection device according to claim 1, characterized in that: The quartz container (3) has fiber optic connection ports on both sides; The optical fiber (6) is connected to the optical fiber connector.

4. The milk freshness detecting apparatus according to claim 1, characterized by Also includes: Electric motor (7) and stirrer (8); The electric motor (7) is located on the upper part of the milk storage tank (1); The stirrer (8) is installed inside the milk storage tank (1) and connected to the output end of the electric motor (7).

5. The milk freshness detection device according to claim 1, characterized in that: The milk storage tank (1) is made of food-grade stainless steel.

6. The milk freshness detection device according to claim 1, characterized in that: The water pump (2) pumps the milk into the quartz container (3) through the infusion pipe (9); The quartz container (3) returns the milk to the milk storage tank (1) through the infusion tube (9).

7. The milk freshness detection device according to claim 6, characterized in that: The infusion tube (9) is made of food-grade silicone.

8. The milk freshness detecting apparatus according to claim 6, characterized by Also includes: Computer (10); The computer (10) communicates with the near-infrared spectrometer (5) to process the spectral data.

9. The milk freshness detection device according to claim 1, characterized in that: The milk storage tank (1) is equipped with a temperature and humidity sensor for monitoring the storage environment of the milk sample.

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