A protection device for a moisture-proof infrared spectrum tester
Patent Information
- Application Number
- CN202522189164.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-16
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-10-16
AI Technical Summary
[0003]潮湿环境下(如南方雨季)，水蒸气吸收峰(1600-3400cm-1)会干扰样品信号，尤其在检测微量污染物时误差显著；现行防潮方案依赖仪器内部干燥系统，但测试仓开放期间湿气仍可侵入，实验表明，开仓5分钟后仓内湿度上升至环境水平的80％
[0018]本实用新型提供了一种可开合的保护罩和可选集成除湿模块，保护罩包括透明防雾窗和密封边缘等。保护罩通过磁吸或铰链方式固定于测试仓口，闭合时形成密闭空间以隔绝湿气，同时允许红外光穿透。本实用新型显著降低了水蒸气干扰，延长了仪器寿命，可兼容常规操作流程，并提高了测试精度。
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Figure CN224873470U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of analytical instrument technology, and in particular to a protective device for a moisture-proof infrared spectrometer. Background Technology
[0002] Infrared spectroscopy is a core instrument for material composition analysis, used in food safety testing for rapid identification of additives, and in lithium battery research and development for analyzing chemical changes on the surface of electrode materials. However, existing infrared spectroscopy instruments face the following challenges:
[0003] In humid environments (such as the rainy season in the south), the water vapor absorption peak is 1600-3400 cm⁻¹. -1 This can interfere with sample signals, especially when detecting trace contaminants, resulting in significant errors. Current moisture-proof solutions rely on the instrument's internal drying system, but moisture can still penetrate when the test chamber is open. Experiments show that the humidity inside the chamber rises to 80% of the ambient level after 5 minutes of opening. This leads to a decrease in the testing accuracy of existing infrared spectrometers in high humidity environments and makes optical components prone to corrosion.
[0004] Therefore, it is necessary to provide a protective device for a moisture-proof infrared spectrometer that can achieve real-time moisture protection while ensuring detection efficiency. Utility Model Content
[0005] The purpose of this invention is to provide a protective device for a moisture-proof infrared spectrometer, which can achieve real-time moisture protection while ensuring detection efficiency.
[0006] To address the problems existing in the prior art, this utility model provides a protective device for a moisture-proof infrared spectrometer, comprising:
[0007] A protective cover connected to an infrared spectrometer via a rotating hinge mechanism, wherein the edge of the protective cover is provided with a composite sealing component, and the rotating hinge mechanism enables the protective cover to open and close from 0 degrees to 90 degrees;
[0008] The dehumidification module is installed inside the infrared spectrometer.
[0009] The safety interlock switch is located at the rotating hinge mechanism.
[0010] Optionally, in the protective device of the moisture-proof infrared spectrometer, the composite sealing assembly includes an inner hollow silicone sealing strip and an outer neodymium iron boron magnetic array.
[0011] Optionally, in the protective device of the moisture-proof infrared spectrometer, the hardness of the hollow silicone sealing strip is 45-55 Shore A.
[0012] Optionally, in the protective device of the moisture-proof infrared spectrometer, the magnetic flux of the neodymium iron boron magnetic array is ≥1200 Gauss.
[0013] Optionally, in the protective device of the moisture-proof infrared spectrometer, the protective cover consists of a metal frame and an infrared transparent anti-fog window.
[0014] Optionally, in the protective device of the moisture-proof infrared spectrometer, the dehumidification module includes a humidity indicator card and a desiccant box with a sliding rail structure, wherein the desiccant box is a detachable structure.
[0015] Optionally, in the protection device of the moisture-proof infrared spectrometer, the safety interlock switch includes a micro switch and a trigger block, wherein the trigger block triggers the state of the micro switch based on the opening and closing of the protective cover.
[0016] Optionally, in the protection device of the moisture-proof infrared spectrometer, the normally closed contact of the micro switch is connected in series to the control circuit or software detection circuit of the main power supply of the infrared spectrometer.
[0017] Compared with the prior art, this utility model has the following advantages:
[0018] This invention provides an openable protective cover and an optional integrated dehumidification module. The protective cover includes a transparent anti-fog window and sealed edges. The protective cover is fixed to the test chamber opening via magnetic attraction or hinges, forming a sealed space when closed to isolate moisture while allowing infrared light to pass through. This invention significantly reduces water vapor interference, extends instrument lifespan, is compatible with conventional operating procedures, and improves testing accuracy. Attached Figure Description
[0019] Figure 1 A structural diagram of the moisture-proof infrared spectrometer protection device provided in this embodiment of the utility model.
[0020] Among them, 1-protective cover; 2-infrared transparent anti-fog window; 3-metal frame; 4-rotating hinge mechanism; 5-hollow silicone sealing strip; 6-neodymium iron boron magnetic array; 7-humidity indicator card; 8-desiccant box; 9-micro switch. Detailed Implementation
[0021] The specific embodiments of this utility model will now be described in more detail with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.
[0022] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0023] Current moisture-proof solutions rely on the instrument's internal drying system, but moisture can still penetrate while the test chamber is open. Experiments show that the humidity inside the chamber rises to 80% of the ambient level after 5 minutes of opening. This leads to a decrease in the testing accuracy of existing infrared spectrometers in high humidity environments and makes optical components prone to corrosion.
[0024] To address the problems existing in the prior art, this utility model provides a protective device for a moisture-proof infrared spectrometer, such as... Figure 1 As shown, it includes:
[0025] The main body of the infrared spectrometer is a cuboid structure, with the circular top surface serving as the opening for the test chamber.
[0026] A protective cover 1 is connected to the infrared spectrometer via a rotating hinge mechanism 4. The protective cover 1 consists of a metal frame 3 and an infrared transparent anti-fog window 2 made of infrared-transmitting material. The rotating hinge mechanism 4 allows the protective cover 1 to open and close from 0 degrees to 90 degrees, with 0 degrees and 90 degrees defining the angle between the protective cover 1 and the top surface of the infrared spectrometer. Preferably, a friction hinge that provides sufficient support is selected, allowing the protective cover 1 to be suspended at any angle.
[0027] The protective cover 1 is provided with a composite sealing assembly at its edge. The composite sealing assembly includes an inner hollow silicone sealing strip 5 and an outer neodymium iron boron magnetic array 6. The hardness of the hollow silicone sealing strip 5 is 45-55 Shore A, and the magnetic flux of the neodymium iron boron magnetic array 6 is ≥1200 Gauss. Specifically, the hollow silicone sealing strip 5 (e.g., a U-shaped silicone sealing ring, with grooves designed on the protective cover 1 or the main body of the infrared spectrometer to ensure that the sealing ring will not shift) is tightly attached to the edge of the opening, and the neodymium iron boron magnetic array 6 (with countersunk holes or slots for magnets to ensure that the magnets are flat and aligned with the metal attracting plates and the attraction force is uniform) is distributed on the edge of the cover.
[0028] A dehumidification module is installed inside the infrared spectrometer; the dehumidification module includes a humidity indicator card 7 and a desiccant box 8 with a sliding rail structure, the desiccant box 8 being a detachable structure. Preferably, a "drawer"-like sliding rail structure is designed to facilitate the pushing, pulling, and replacement of the desiccant box 8.
[0029] A safety interlock switch is installed at the rotary hinge mechanism 4. The safety interlock switch includes a micro switch 9 and a trigger block. The trigger block activates the micro switch 9 based on the opening and closing status of the protective cover 1. Furthermore, the normally closed contact of the micro switch 9 is connected in series to the control circuit or software detection circuit of the infrared spectrometer's main power supply. The safety interlock switch is used to prevent the infrared spectrometer from starting when the protective cover 1 is not fully closed, ensuring that the infrared spectrometer is only activated when the protective cover 1 is fully closed.
[0030] In one embodiment, the material selection list is as follows:
[0031]
[0032] Testing and Verification
[0033] After the prototype is created, rigorous testing must be conducted to verify its effectiveness.
[0034] Sealing test: Place the assembled moisture-proof infrared spectrometer (with protective cover 1 closed) into a constant temperature and humidity chamber. Set the environment to: temperature 25℃, humidity 90%RH. Place a high-precision humidity sensor inside the moisture-proof infrared spectrometer chamber and test continuously for 24 hours. Record the change in humidity inside the moisture-proof infrared spectrometer chamber. If the humidity inside the chamber rises by less than 5%RH within 24 hours, it is considered an excellent indicator.
[0035] Optical performance test: Under the same conditions, test the spectrum of the standard sample (such as polystyrene film) with the protective cover 1 on and off respectively, and compare the signal-to-noise ratio (SNR) and absorbance value of the key characteristic peaks. After the protective cover 1 is closed, the shape of the spectral characteristic peaks does not change significantly and the signal-to-noise ratio decreases by <10%, which is qualified.
[0036] Functional and durability tests: (1) Safety switch test: Try to start the instrument when the protective cover 1 is not closed to verify whether it is properly disabled. (2) Opening and closing life test: Simulate user operation and perform 5,000-10,000 repeated opening and closing to check whether the hinge and sealing ring are worn or deformed, and whether the magnet is demagnetized.
[0037] In summary, compared with the prior art, this utility model has the following advantages:
[0038] This invention provides an openable protective cover and an optional integrated dehumidification module. The protective cover includes a transparent anti-fog window and sealed edges. The protective cover is fixed to the test chamber opening via magnetic attraction or hinges, forming a sealed space when closed to isolate moisture while allowing infrared light to pass through. This invention significantly reduces water vapor interference, extends instrument lifespan, is compatible with conventional operating procedures, and improves testing accuracy.
[0039] The above are merely preferred embodiments of this utility model and do not constitute any limitation on this utility model. Any equivalent substitutions or modifications made by those skilled in the art to the technical solutions and contents disclosed in this utility model without departing from the scope of the technical solutions of this utility model shall still fall within the protection scope of this utility model.
Claims
1. A protective device for a moisture-proof infrared spectrometer, characterized in that, include: A protective cover connected to an infrared spectrometer via a rotating hinge mechanism, wherein the edge of the protective cover is provided with a composite sealing component, and the rotating hinge mechanism enables the protective cover to open and close from 0 degrees to 90 degrees; Dehumidification module installed inside the infrared spectrometer; The safety interlock switch is located at the rotating hinge mechanism.
2. The protective device for the moisture-proof infrared spectrometer as described in claim 1, characterized in that, The composite sealing assembly includes an inner hollow silicone sealing strip and an outer neodymium iron boron magnetic array.
3. The protective device for the moisture-proof infrared spectrometer as described in claim 2, characterized in that, The hardness of the hollow silicone sealing strip is 45-55 Shore A.
4. The protective device for the moisture-proof infrared spectrometer as described in claim 2, characterized in that, The magnetic flux of the neodymium iron boron magnetic array is ≥1200 Gauss.
5. The protective device for the moisture-proof infrared spectrometer as described in claim 1, characterized in that, The protective cover consists of a metal frame and an infrared transparent anti-fog window.
6. The protective device for the moisture-proof infrared spectrometer as described in claim 1, characterized in that, The dehumidification module includes a humidity indicator card and a desiccant box with a sliding rail structure, and the desiccant box is a detachable structure.
7. The protective device for the moisture-proof infrared spectrometer as described in claim 1, characterized in that, The safety interlock switch includes a micro switch and a trigger block. The trigger block triggers the state of the micro switch based on the opening and closing of the protective cover.
8. The protective device for the moisture-proof infrared spectrometer as described in claim 7, characterized in that, The normally closed contact of the micro switch is connected in series to the control circuit or software detection circuit of the main power supply of the infrared spectrometer.