Micro-channel cuvette for dynamically detecting particulate pollutants
By designing the buffer zone and variable diameter zone of the microchannel cuvette, and combining quartz glass and PP plastic connectors, the problems of residue and structural complexity in particulate contaminant detection devices were solved, achieving efficient and accurate particulate detection and cleaning effects.
Patent Information
- Application Number
- CN202422892501.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2034-11-26
AI Technical Summary
Existing particulate pollutant detection devices are prone to leaving residues in the microchannel buffer area, detection area, and joint connection points, resulting in incomplete cleaning. They also have complex structures and low production efficiency.
A microchannel cuvette is designed, comprising a microchannel buffer zone, a variable diameter zone, and a detection zone. It combines quartz glass and PP plastic connectors to ensure stable liquid flow and easy cleaning. Threaded connections and limit rings are used to improve sealing.
It achieves efficient and accurate detection of particulate pollutants, reduces residual effects, improves cleaning efficiency, simplifies the structure of the device, and is suitable for use in high-temperature and chemical environments.
Smart Images
Figure CN223784142U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pollution detection equipment technology, specifically to a microchannel cuvette for dynamic detection of particulate pollutants. Background Technology
[0002] Dynamic particulate pollutant detection technology directly captures video of particulate pollutants using a high-speed industrial camera, thereby obtaining multi-angle visual information of the pollutants and enabling the extraction, counting, and classification of multi-information features. This detection technology is based on the principle of microscopic imaging, meaning that clear image information of particulate pollutants can only be obtained when they are within the depth of field of the imaging system.
[0003] Existing detection devices are all designed with a shallow cavity microchannel to ensure that particulate pollutants move within a reasonable range, such as Figure 6 As shown, the device is made using etching and photocuring adhesive bonding processes. However, it does not take into account the impact of residual particulate contaminants in the microchannel buffer area, detection area, and joint connection, which can lead to incomplete cleaning. In addition, it also has the disadvantages of complex structure and assembly process and low production efficiency. Utility Model Content
[0004] We propose a microchannel cuvette for dynamic detection of particulate pollutants to address the aforementioned problems.
[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:
[0006] A microchannel cuvette for dynamic detection of particulate pollutants, comprising:
[0007] The cuvette body has a microchannel groove constructed in the middle of the cuvette body;
[0008] The top cover is fixedly bonded to the top of the cuvette body. The top cover has round holes on both sides, which are connected to the two sides of the microchannel groove.
[0009] The adapter block is fixed on both sides of the top of the upper cover. A groove is opened in the middle of the top of the adapter block, and a circular channel is constructed at the bottom of the adapter block corresponding to the position of the groove. The circular channel and the circular hole are opposite in position and matched in size.
[0010] A guide tube is inserted inside the circular channel, and the upper end of the guide tube extends through the column groove to the outside of the adapter block.
[0011] Furthermore, the microchannel groove is composed of a microchannel buffer zone, a microchannel variable diameter zone, and a microchannel detection zone. The microchannel detection zone is located in the middle of the microchannel groove, the microchannel buffer zone is located on both sides of the microchannel groove, and the microchannel variable diameter zone is connected between the microchannel buffer zone and the microchannel detection zone.
[0012] Furthermore, the width of the microchannel detection area is greater than the width of the microchannel buffer zone, and the width of the microchannel variable diameter area gradually increases from the end near the microchannel buffer zone to the end near the microchannel detection area.
[0013] Furthermore, the cuvette body, top cover, and adapter block are all made of quartz glass.
[0014] Furthermore, a limiting ring is fixedly sleeved on the surface of the guide tube. The limiting ring is divided into an upper section and a lower section. The diameter of the upper section is larger than that of the lower section, and the lower section is slidably embedded in the column groove.
[0015] Furthermore, an inverted conical joint is provided on the surface of the guide pipe below the limiting ring, and the inverted conical joint is slidably connected to the groove wall of the column groove.
[0016] Furthermore, the inverted cone joint is a PP plastic joint, and it is threadedly connected to the guide tube.
[0017] The beneficial effects of this utility model are as follows:
[0018] 1. This utility model utilizes a specially designed microchannel groove, which allows liquid samples to achieve a stable and uniform flow state after passing through the buffer zone and the variable diameter zone. This ensures that particulate contaminants in the liquid are evenly dispersed within the detection area, providing clear image acquisition conditions for high-speed industrial cameras. At the same time, the design of the microchannel groove also takes into account the ease of cleaning, reducing the impact of incomplete cleaning caused by residual particulate contaminants. In this way, it achieves highly efficient and accurate detection of particulate contaminants, making it highly practical. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0020] Figure 2 This is a schematic diagram of the three-dimensional exploded structure of this utility model;
[0021] Figure 3 This is a schematic diagram of the body structure of the cuvette of this utility model;
[0022] Figure 4 This is a top view of the present invention;
[0023] Figure 5 This is a utility model Figure 4 Schematic diagram of cross-section along the middle AA direction;
[0024] Figure 6 This is a schematic diagram of the prior art testing device of this utility model.
[0025] Reference numerals: 1. Cuvette body; 101. Microchannel groove; 1011. Microchannel buffer zone; 1012. Microchannel diameter variation zone; 1013. Microchannel detection zone; 2. Top cover; 201. Circular hole; 3. Adapter block; 301. Column groove; 302. Circular channel; 4. Guide tube; 5. Limiting ring; 501. Upper section; 502. Lower section; 6. Inverted conical connector. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.
[0027] This application provides a microchannel cuvette for dynamic detection of particulate contaminants, mainly addressing the shortcomings of existing technologies that fail to consider the impact of residual particulate contaminants in the microchannel buffer area, detection area, and connector joints, leading to incomplete cleaning. It also addresses the drawbacks of existing technologies, such as complex structure and assembly processes, and low production efficiency. The following technical solution is provided, which will be discussed in conjunction with... Figures 1-5 Please provide a detailed explanation:
[0028] A microchannel cuvette for dynamic detection of particulate pollutants, comprising:
[0029] The cuvette body 1 has a microchannel groove 101 in the middle. The microchannel groove 101 is composed of a microchannel buffer zone 1011, a microchannel variable diameter zone 1012, and a microchannel detection zone 1013. The microchannel detection zone 1013 is located in the middle of the microchannel groove 101. The microchannel buffer zone 1011 is located on both sides of the microchannel groove 101. The microchannel variable diameter zone 1012 connects the microchannel buffer zone 1011 and the microchannel detection zone 1013. The width of the microchannel detection zone 1013 is greater than the width of the microchannel buffer zone 1011. The width of the microchannel variable diameter zone 1012 gradually increases from the end near the microchannel buffer zone 1011 to the end near the microchannel detection zone 1013.
[0030] The top cover 2 is fixedly bonded to the top of the cuvette body 1. The top cover 2 has round holes 201 on both sides, which are connected to the two sides of the microchannel groove 101.
[0031] The adapter block 3 is fixed on both sides of the top of the upper cover 2. A column groove 301 is opened in the middle of the top of the adapter block 3. A circular channel 302 is constructed at the bottom of the adapter block 3 corresponding to the position of the column groove 301. The circular channel 302 is opposite to the circular hole 201 and the size matches it.
[0032] The guide tube 4 is inserted inside the circular channel 302, and the upper end of the guide tube 4 extends through the column groove 301 to the outside of the adapter block 3.
[0033] The specific workflow and principle of this microchannel cuvette for dynamic detection of particulate pollutants are explained below:
[0034] The first step involves injecting the liquid sample to be tested into the microchannel groove 101 through the guide tube 4. The liquid sample first enters the microchannel buffer zone 1011, where the design slows down the liquid flow rate and initially disperses particulate contaminants. Subsequently, the liquid sample passes through the microchannel variable diameter zone 1012, where the design gradually stabilizes the liquid flow rate and further disperses particulate contaminants evenly. Finally, the liquid sample enters the microchannel detection zone 1013, where particulate contaminants are now evenly dispersed in the liquid, which is beneficial for high-speed industrial cameras to acquire clear images.
[0035] The second step involves using a high-speed industrial camera to capture video of particulate pollutants within the microfluidic detection area 1013, obtaining multi-angle visual information. Based on the acquired image information, the features of the particulate pollutants are extracted, counted, and classified.
[0036] The third step is to clean the microchannel groove 101 after the test is completed, so that it can be used for the next test.
[0037] This microchannel cuvette for dynamic detection of particulate contaminants utilizes a specially designed microchannel groove 101. After passing through the buffer zone and the variable diameter zone, the liquid sample achieves a stable and uniform flow state. This allows particulate contaminants in the liquid to be uniformly dispersed within the detection area, providing clear image acquisition conditions for high-speed industrial cameras. Simultaneously, the design of the microchannel groove 101 also considers ease of cleaning, reducing the impact of incomplete cleaning caused by residual particulate contaminants. In this way, efficient and accurate detection of particulate contaminants is achieved.
[0038] like Figure 2 As shown, in some embodiments, the cuvette body 1, the top cover 2, and the adapter block 3 are all made of quartz glass. More specifically, quartz glass has excellent light transmittance, ensuring the transmission of light over a wide wavelength range (from ultraviolet to infrared) and almost no absorption of visible light. This is crucial for high-speed industrial cameras to capture images within microchannels, ensuring image clarity and detail preservation, thereby improving the accuracy of particulate contaminant detection. Simultaneously, quartz glass can withstand extremely high temperatures, with a melting point exceeding 1600°C. This means it maintains stability even in high-temperature environments. In experiments requiring sample heating or conducted at high temperatures, the quartz glass cuvette will not be damaged or deformed due to temperature changes. Furthermore, quartz glass has high resistance to various chemicals (including acids and alkalis) and is not easily corroded. This characteristic ensures that the cuvette maintains its structural and functional integrity when in contact with various chemical reagents, making it particularly suitable for long-term, continuous experimental analysis.
[0039] like Figure 2 As shown, in some embodiments, a limiting ring 5 is fixedly sleeved on the surface of the guide tube 4. The limiting ring 5 is divided into an upper section 501 and a lower section 502. The diameter of the upper section 501 is larger than that of the lower section 502, and the lower section 502 is slidably embedded in the column groove 301. More specifically, the sliding embedding of the lower section 502 of the limiting ring 5 in the column groove 301 ensures that the guide tube 4 can remain stable under different operating environments, avoiding leakage or sample loss caused by improper operation. At the same time, the upper section 501 of the limiting ring 5, due to its larger diameter, forms a protective barrier, which helps to prevent impurities from entering the column groove 301, and also provides additional sealing performance for the guide tube 4 to prevent liquid leakage.
[0040] like Figure 2 As shown, in some embodiments, an inverted conical joint 6 is provided on the surface of the guide tube 4 below the limiting ring 5. The inverted conical joint 6 is slidably connected to the groove wall of the column groove 301. More specifically, during the liquid sample injection process, the tight connection between the inverted conical joint 6 and the column groove 301 ensures the stability of the pipeline and avoids loosening or leakage of the joint caused by flow. The design of the inverted conical joint 6 optimizes the contact surface with the column groove 301, enhances the sealing effect, effectively prevents liquid leakage, and ensures the integrity of the sample.
[0041] like Figure 2 As shown, in some embodiments, the inverted cone joint 6 is a PP plastic joint, and it is threadedly connected to the guide tube 4. More specifically, the inverted cone joint 6 is made of PP plastic, which has good chemical stability and corrosion resistance, and is suitable for long-term contact with various chemical reagents. At the same time, PP plastic also provides sufficient structural strength and wear resistance to ensure the service life of the joint. The threaded connection design allows for quick and convenient assembly and disassembly, making daily maintenance and cleaning more efficient.
[0042] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A microchannel cuvette for dynamic detection of particulate pollutants, characterized in that, include: The cuvette body (1) has a microchannel groove (101) in the middle. The microchannel groove (101) is composed of a microchannel buffer zone (1011), a microchannel variable diameter zone (1012), and a microchannel detection zone (1013). The microchannel detection zone (1013) is located in the middle of the microchannel groove (101). The microchannel buffer zone (1011) is located on both sides of the microchannel groove (101). The microchannel variable diameter zone (1012) is connected between the microchannel buffer zone (1011) and the microchannel detection zone (1013). The width of the microchannel detection zone (1013) is greater than the width of the microchannel buffer zone (1011). The width of the microchannel variable diameter zone (1012) gradually increases from the end near the microchannel buffer zone (1011) to the end near the microchannel detection zone (1013). The top cover (2) is fixedly attached to the top of the cuvette body (1). The top cover (2) has round holes (201) on both sides, and the round holes (201) are connected to the two sides of the microchannel groove (101). The adapter block (3) is fixed on both sides of the top of the upper cover (2). A column groove (301) is opened in the middle of the top of the adapter block (3). A circular channel (302) is constructed at the bottom of the adapter block (3) corresponding to the column groove (301). The circular channel (302) is opposite to the circular hole (201) and the size is matched. The guide tube (4) is inserted inside the circular channel (302), and the upper end of the guide tube (4) extends through the column groove (301) to the outside of the adapter block (3).
2. The microchannel cuvette for dynamic detection of particulate pollutants according to claim 1, characterized in that, The cuvette body (1), the top cover (2), and the adapter block (3) are all made of quartz glass.
3. A microchannel cuvette for dynamic detection of particulate pollutants according to claim 1, characterized in that, The surface of the guide tube (4) is fixedly fitted with a limiting ring (5). The limiting ring (5) is divided into an upper section (501) and a lower section (502). The diameter of the upper section (501) is larger than that of the lower section (502), and the lower section (502) is slidably embedded in the column groove (301).
4. A microchannel cuvette for dynamic detection of particulate pollutants according to claim 1, characterized in that, The surface of the guide pipe (4) is provided with an inverted cone joint (6) located below the limiting ring (5), and the inverted cone joint (6) is slidably connected to the groove wall of the column groove (301).
5. A microchannel cuvette for dynamic detection of particulate pollutants according to claim 4, characterized in that, The inverted cone joint (6) is a PP plastic joint, and it is threadedly connected to the guide tube (4).