Detection equipment for detecting cleanliness of modified nucleating agent

Abstract

The invention discloses detection equipment for detecting cleanliness of a modified nucleating agent, and relates to the technical field of nucleating agent detection, the detection equipment comprises a base, and a fixed sealing box is fixed on the base. According to the detection equipment for detecting the cleanliness of the modified nucleating agent, a first toothed bar and a second toothed bar are driven by a moving plate driven by an air cylinder to be sequentially meshed with a first gear and a second gear which are different in diameter, and automatic switching between rapid oscillation and low-speed oscillation of a transparent glass sample bottle can be achieved; in the early stage of detection, materials in the transparent glass sample bottle rapidly reach a uniform dispersion state through a rapid oscillation mode, and the mode is automatically switched to a low-speed oscillation mode during detection, so that particle sedimentation can be effectively prevented, the space-time consistency of sample concentration is ensured, the vibration amplitude of a bottle body is greatly reduced, and the detection accuracy is improved. The problem that imaging of the high-resolution CMOS camera is not clear due to motion blur is avoided, and the accuracy of detection data is effectively guaranteed.

Description

Technical Field

[0001] This invention relates to the field of nucleating agent detection technology, specifically to a detection device for detecting the cleanliness of modified nucleating agents. Background Technology

[0002] Modified nucleating agents are key additives for improving the properties of polymer materials (such as transparency and mechanical strength). The particle cleanliness (mainly referring to the content of foreign impurities and the degree of self-agglomeration) directly affects their dispersibility and activation efficiency in the matrix, and thus determines the quality of the final product. Therefore, rapid and accurate cleanliness testing of modified nucleating agents is an important part of polymer material production and quality control. Currently, the industry relies heavily on manual sampling combined with offline analysis (such as sieving and microscopic observation) or the use of general-purpose particle counters to detect the cleanliness of powders or suspensions. These existing technologies still have some shortcomings in practical applications: 1. Traditional ultrasonic dispersion or mechanical stirring methods are difficult to achieve a stable and uniform suspension state. Vigorous treatment may damage the particles themselves, while the particles settle rapidly when left to stand. This results in large fluctuations in sample concentration and state at the moment of sampling, poor repeatability of test results, and an inability to truly reflect the overall cleanliness level of the sample. 2. Open or semi-open testing environments are prone to introducing external contaminants such as environmental dust, which can lead to misjudgments. In addition, if the residues adhering to the sample bottle walls are not cleaned in time, they will seriously affect the clarity and accuracy of subsequent optical imaging. Summary of the Invention

[0003] The purpose of this invention is to provide a testing device for detecting the cleanliness of modified nucleating agents, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a testing device for detecting the cleanliness of modified nucleating agents, comprising a base, a fixed sealing box fixed on the base, a positioning mechanism for positioning transparent glass sample bottles installed on the fixed sealing box, a cylinder fixed on the right side of the base, a moving plate fixed at the output end of the cylinder, a movable sealing box provided on the left side of the moving plate, and the movable sealing box and the fixed sealing box cooperating to form a sealed cavity; The drive mechanism uses a variable speed transmission to achieve uniform mixing of materials in the transparent glass sample bottle. The drive mechanism is installed in the base and is connected to the moving plate. The testing mechanism is used to test the materials inside transparent glass sample bottles, and the testing mechanism is installed in a movable sealed box.

[0005] Preferably, the positioning mechanism includes a vertical rod that is slidably connected to the fixed sealing box, and the vertical rod is symmetrically distributed about the center line of the fixed sealing box. A first spring is fixed between the vertical rod and the fixed sealing box. At the same time, a positioning sleeve disposed inside the fixed sealing box is fixed on the vertical rod. The positioning sleeve and the transparent glass sample bottle are nested together. The distance between the two positioning sleeves can be adjusted by the sliding action between the vertical rod and the fixed sealing box, so as to realize the assembly and disassembly of the transparent glass sample bottle. The elastic action of the first spring and the nesting action between the positioning sleeve and the transparent glass sample bottle can ensure the stability of the transparent glass sample bottle.

[0006] Preferably, the movable plate, the movable sealing box, and the guide rod are slidably connected, and the guide rod is symmetrically fixed in the base. When the movable plate and the movable sealing box move, the sliding guidance between the movable plate, the movable sealing box, and the guide rod can ensure the stability of the movement of the movable plate and the movable sealing box.

[0007] Preferably, the movable sealing box is also symmetrically fixed with sliding rods at the top and bottom, and the sliding rods are slidably connected to the moving plate. Furthermore, a second spring is fixed between the movable sealing box and the moving plate. When the moving plate moves relative to the movable sealing box, the sliding guide between the sliding rods and the moving plate can ensure the stability of the moving plate's movement. Moreover, the elasticity of the second spring can provide a basic force for the automatic reset of the moving plate.

[0008] Preferably, the driving mechanism includes a first toothed rod symmetrically fixed to a movable plate, and a second toothed rod fixed to the side of the first toothed rod. The second toothed rod, the first toothed rod, and the fixed plate form a sliding connection. Meanwhile, the fixed plate is symmetrically fixed in the base. The length of the toothed blocks on the first toothed rod is less than the distance between the movable sealing box and the fixed sealing box. The movement of the movable plate can provide a basic guarantee for the movement of the first toothed rod and the second toothed rod. Furthermore, the sliding guide effect between the first toothed rod, the second toothed rod, and the fixed plate can ensure the stability of the movement of the first toothed rod and the second toothed rod.

[0009] Preferably, the first rack meshes with the first gear to achieve transmission, and the first gear is fixed on the first rotating shaft, and the first rotating shaft is connected to the base by a bearing. At the same time, a second gear is also fixed on the first rotating shaft. The second gear and the second rack cooperate to achieve transmission, and the distance between the second gear and the second rack is greater than the distance between the movable sealing box and the fixed sealing box. The transmission between the first rack and the first gear can provide a basic guarantee for the initial rapid mixing. Through the transmission between the second gear and the second rack, the accuracy of the test data can be avoided due to material settling during the detection process.

[0010] Preferably, the first gear meshes with the transmission gear to achieve transmission, and the transmission gear is fixed on the second rotating shaft. The second rotating shaft is connected to the horizontal plate by a bearing, and the horizontal plate is fixed on the base. A cam is also fixed on the second rotating shaft, and the cam and the roller are connected by a rolling connection. The roller is connected to the lower vertical rod by a bearing. The diameters of the transmission gear, the first gear, and the second gear increase sequentially. Through the above structure, a basic force can be provided for the rotation of the cam, and a basic force can be provided for the movement of the lower vertical rod through the rolling action between the roller and the cam.

[0011] Preferably, the detection mechanism includes a connecting rod with one end rotatably connected to the movable plate, and the other end of the connecting rod is rotatably connected to the lower end of the support rod. The support rod is slidably connected to the movable sealing box, and a fixing block is fixed at the upper end of the support rod. The fixing block is set inside the movable sealing box. The movable plate moves relative to the movable sealing box, and with the transmission action of the connecting rod, it can provide a basic force for the movement of the support rod.

[0012] Preferably, a high-resolution CMOS camera is fixed at the center of the left side of the fixing block, and supplementary lights are also symmetrically fixed on the left side of the fixing block. The high-resolution CMOS camera can achieve the detection function, and the supplementary lights can achieve the supplementary lighting function, ensuring the accuracy of the detection data.

[0013] Preferably, the fixing block and the round rod are slidably connected, and the round rod is fixed to the fixing frame. A third spring is fixed between the fixing frame and the fixing block. At the same time, a sponge wiping pad is fixed on the fixing frame. The sponge wiping pad can slide in contact with the transparent glass sample bottle, and the sponge wiping pad is symmetrically distributed vertically about the center line of the high-resolution CMOS camera. With the above structure, the side of the transparent glass sample bottle facing the high-resolution CMOS camera can be wiped during the detection process, ensuring the cleanliness of the side of the transparent glass sample bottle facing the high-resolution CMOS camera, thereby better ensuring the accuracy of the detection data.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This testing device for detecting the cleanliness of modified nucleating agents uses a cylinder-driven moving plate to sequentially mesh first and second toothed rods with first and second gears of different diameters. This allows for automatic switching between rapid and low-speed oscillation of the transparent glass sample vial. In the early stages of testing, the rapid oscillation mode quickly achieves uniform dispersion of the material inside the transparent glass sample vial. During testing, it automatically switches to low-speed oscillation mode. This effectively prevents particle sedimentation, ensures the spatiotemporal consistency of sample concentration, and greatly reduces the vibration amplitude of the vial body. This avoids the problem of unclear imaging by high-resolution CMOS cameras due to motion blur, effectively ensuring the accuracy of the test data. 2. This testing device for detecting the cleanliness of modified nucleating agents drives the connecting rod and support rod through the continued movement of the moving plate, causing the fixed block and its sponge pad and high-resolution CMOS camera to move down synchronously. The sponge pad first wipes the outer wall of the sample bottle to remove water stains or attachments, and then the camera performs vertical scanning and shooting. This allows for automatic cleaning of the observation window before and after each test, and enables image acquisition of multiple layers of the suspension inside the bottle, ensuring the clarity and representativeness of the data. 3. The testing equipment for detecting the cleanliness of modified nucleating agents forms a sealed dark cavity that completely encloses the transparent glass sample bottle during testing through the cooperation of the movable sealing box and the fixed sealing box. This effectively isolates the interference of ambient light and provides controllable lighting conditions for the supplementary light, while completely preventing particulate pollutants in the outside air from falling into the field of view, thus ensuring the accuracy of the test data. Attached Figure Description

[0015] Figure 1 This is a frontal three-dimensional structural diagram of the device of the present invention; Figure 2 This is a side view of the overall three-dimensional structure of the device of the present invention; Figure 3 This is a three-dimensional structural diagram of the base of the present invention, viewed from below. Figure 4 This is a frontal cross-sectional three-dimensional structural diagram of the movable sealing box of the present invention; Figure 5 This is a three-dimensional structural diagram of the positioning mechanism and the driving mechanism of the present invention; Figure 6 This is a schematic diagram of the cam's three-dimensional structure viewed from below in this invention; Figure 7 This is a frontal three-dimensional structural diagram of the support rod of the present invention.

[0016] In the diagram: 1. Base; 2. Fixed sealing box; 3. Positioning mechanism; 301. Vertical rod; 302. First spring; 303. Positioning sleeve; 4. Transparent glass sample bottle; 5. Cylinder; 6. Moving plate; 7. Movable sealing box; 701. Slide rod; 702. Second spring; 8. Guide rod; 9. Drive mechanism; 901. First gear; 902. Second gear; 903. First gear; 904. First rotating shaft; 905. 906. Second gear; 907. Transmission gear; 908. Second rotating shaft; 909. Horizontal plate; 910. Cam; 911. Roller; 912. Fixing plate; 10. Detection mechanism; 1001. Connecting rod; 1002. Support rod; 1003. Fixing block; 1004. High-resolution CMOS camera; 1005. Fill light; 1006. Round rod; 1007. Fixing frame; 1008. Third spring; 1009. Sponge pad. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-7 The present invention provides a technical solution: a testing device for detecting the cleanliness of modified nucleating agents, including a base 1, a fixed sealing box 2 fixed on the base 1, a positioning mechanism 3 for positioning a transparent glass sample bottle 4 installed on the fixed sealing box 2, a cylinder 5 fixed on the right side of the base 1, a moving plate 6 fixed at the output end of the cylinder 5, a movable sealing box 7 arranged on the left side of the moving plate 6, and the movable sealing box 7 and the fixed sealing box 2 cooperate to form a sealed cavity; The drive mechanism 9 uses a variable speed transmission to achieve uniform mixing of materials in the transparent glass sample bottle 4. The drive mechanism 9 is installed in the base 1 and is connected to the moving plate 6. The testing mechanism 10 is used to test the material inside the transparent glass sample bottle 4. The testing mechanism 10 is installed inside the movable sealed box 7.

[0019] The positioning mechanism 3 includes a vertical rod 301 that is slidably connected to the fixed sealing box 2. The vertical rod 301 is symmetrically distributed about the center line of the fixed sealing box 2. A first spring 302 is fixed between the vertical rod 301 and the fixed sealing box 2. At the same time, a positioning sleeve 303 is fixed on the vertical rod 301 and disposed inside the fixed sealing box 2. The positioning sleeve 303 is nested with the transparent glass sample bottle 4. When using the testing equipment for detecting the cleanliness of modified nucleating agents, such as Figures 1-7 As shown, firstly, a certain amount (e.g., 10g) of modified nucleating agent (e.g., modified NA-21 type nucleating agent) is weighed and placed into the transparent glass sample bottle 4, and deionized water is added to the transparent glass sample bottle 4. Then, the transparent glass sample bottle 4 is sealed, and by pulling the upper vertical rod 301 of the fixed sealing box 2, the upper positioning sleeve 303 is moved to adjust the distance between the upper and lower positioning sleeves 303. Then, the transparent glass sample bottle 4 is nested with the lower positioning sleeve 303, and the upper vertical rod 301 is released. At this time, under the elastic action of the first spring 302, the upper positioning sleeve 303 can be reset and nested with the transparent glass sample bottle 4, thereby realizing the installation function of the transparent glass sample bottle 4. The movable plate 6, the movable sealing box 7, and the guide rod 8 are slidably connected, and the guide rod 8 is symmetrically fixed in the base 1. A sliding rod 701 is also symmetrically fixed vertically on the movable sealing box 7, and the sliding rod 701 is slidably connected to the movable plate 6. A second spring 702 is also fixed between the movable sealing box 7 and the movable plate 6. The drive mechanism 9 includes a first gear 901 symmetrically fixed to the movable plate 6, and a second gear 902 fixed to the side of the first gear 901. The second gear 902, the first gear 901, and the fixed plate 911 form a slidable connection. The fixed plate 911 is symmetrically fixed in the base 1. The length of the teeth on the first gear 901 is less than the distance between the movable sealing box 7 and the fixed sealing box 2. The first gear 901 meshes with the first gear 903 to achieve transmission, and the first gear 903 is fixed to the first rotating shaft 9. On 04, the first rotating shaft 904 is connected to the base 1 by a bearing, and a second gear 905 is fixed on the first rotating shaft 904. The second gear 905 and the second rack 902 cooperate to perform transmission, and the distance between the second gear 905 and the second rack 902 is greater than the distance between the movable sealing box 7 and the fixed sealing box 2. The first gear 903 meshes with the transmission gear 906 to achieve transmission, and the transmission gear 906 is fixed on the second rotating shaft 907. The second rotating shaft 907 is connected to the horizontal plate 908 by a bearing, and the horizontal plate 908 is fixed on the base 1. A cam 909 is also fixed on the second rotating shaft 907, and the cam 909 and the roller 910 are in a rolling connection. The roller 910 is connected to the lower vertical rod 301 by a bearing. The diameters of the transmission gear 906, the first gear 903, and the second gear 905 increase sequentially. After the transparent glass sample vial 4 is installed, during testing, if... Figures 1-7 As shown, by controlling the extension of the cylinder 5, the moving plate 6 and the movable sealing box 7 can move synchronously. With the sliding guidance between the moving plate 6, the movable sealing box 7 and the guide rod 8, the stability of the movement of the moving plate 6 and the movable sealing box 7 can be ensured. When the movable sealing box 7 contacts and seals with the fixed sealing box 2, the transparent glass sample bottle 4 can be sealed in the opaque sealing cavity through the movable sealing box 7 and the fixed sealing box 2 for subsequent testing. When the movable plate 6 and the movable sealing box 7 move synchronously, the movable plate 6 can synchronously drive the first rack 901 and the second rack 902 to move. At this time, the first rack 901 and the first gear 903 are in a meshing transmission state, while the second rack 902 and the second gear 905 are in a disengaged state. Through the meshing transmission between the first rack 901 and the first gear 903, the first rotating shaft 904 can be rotated. In conjunction with the transmission action between the first gear 903 and the transmission gear 906, the second rotating shaft 907 and the cam 909 can be rotated. When the cam 909 rotates, through the rolling action between the roller 910 and the cam 909 and the elasticity of the first spring 302, the cam 907 rotates. The function is to make the vertical rod 301 reciprocate up and down in an orderly manner under force, thereby driving the transparent glass sample bottle 4 to reciprocate up and down in an orderly manner. Since the diameter of the first gear 903 is larger than the diameter of the transmission gear 906, the transparent glass sample bottle 4 vibrates rapidly up and down, so that the modified nucleating agent in the transparent glass sample bottle 4 can be evenly dispersed in deionized water. Furthermore, since the length of the upper tooth block of the first tooth rod 901 is less than the distance between the movable sealing box 7 and the fixed sealing box 2, when the movable sealing box 7 contacts and seals with the fixed sealing box 2, the upper tooth block of the first tooth rod 901 separates from the first gear 903, thereby allowing the modified nucleating agent to be evenly dispersed in deionized water through rapid vibration. When the movable sealing box 7 contacts and seals the fixed sealing box 2, the control cylinder 5 continues to extend, allowing the movable plate 6 to move relative to the movable sealing box 7. The sliding action between the movable plate 6 and the slide rod 701 ensures the stability of the movable plate 6's movement. The movement of the movable plate 6 relative to the movable sealing box 7 allows the first rack 901 and the second rack 902 to move again. When the second rack 902 engages with the second gear 905 (i.e., after the first rack 901 and the first gear 903 are completely separated, the second rack 902 and the second gear 905 are perfectly engaged), the first rotating shaft 904 and the first gear 903 can rotate again. Because the diameter of the second rack 902 is large... When the diameter of the first gear 903 is the same as that of the moving plate 6, the rotational speed of the first rotating shaft 904 and the first gear 903 decreases. Combined with the transmission action between the first gear 903 and the transmission gear 906, the second rotating shaft 907 and the cam 909 can be lowered. Combined with the rolling action between the roller 910 and the cam 909 and the elastic action of the first spring 302, the transparent glass sample bottle 4 can be oscillated at a low speed. This can avoid the sedimentation of the modified nucleating agent uniformly dispersed in deionized water from affecting the accuracy of the detection data, and can also avoid the high-resolution CMOS camera 1004 from being affected by the excessively fast oscillation of the transparent glass sample bottle 4, thus effectively ensuring the accuracy of the detection data. The testing mechanism 10 includes a connecting rod 1001, one end of which is rotatably connected to the movable plate 6, and the other end of the connecting rod 1001 is rotatably connected to the lower end of the support rod 1002. The support rod 1002 is slidably connected to the movable sealing box 7. A fixing block 1003 is fixed to the upper end of the support rod 1002 and is disposed inside the movable sealing box 7. A high-resolution CMOS camera 1004 is fixed at the center position on the left side of the fixing block 1003, and the left side of the fixing block 1003 is also symmetrically fixed vertically. A supplementary light 1005 is provided; the fixed block 1003 and the round rod 1006 are slidably connected, and the round rod 1006 and the fixed frame 1007 are fixed to each other. A third spring 1008 is fixed between the fixed frame 1007 and the fixed block 1003. At the same time, a sponge pad 1009 is fixed on the fixed frame 1007. The sponge pad 1009 can slide in contact with the transparent glass sample bottle 4, and the sponge pad 1009 is symmetrically distributed about the center line of the high-resolution CMOS camera 1004. During the operation of the device, such as Figures 1-7 As shown, when the movable sealing box 7 contacts the fixed sealing box 2, the elastic action of the third spring 1008 allows the sponge pad 1009 to contact the side of the transparent glass sample bottle 4 facing the high-resolution CMOS camera 1004. At this time, the high-resolution CMOS camera 1004 can photograph the modified dispersant dispersed in deionized water inside the transparent glass sample bottle 4. Combined with the supplementary light 1005, supplementary lighting is achieved to ensure the clarity of the captured data. When the cylinder 5 continues to extend, causing the moving plate 6 to move relative to the movable sealing box 7, the connecting rod 1001 drives the support rod 1002 to slide downwards relative to the movable sealing box 7, thereby driving the high-resolution CMOS camera 1004 to move. The MOS camera 1004 and the sponge pad 1009 move downwards. The sponge pad 1009 can clean the side of the transparent glass sample bottle 4 facing the high-resolution CMOS camera 1004, ensuring its cleanliness and thus guaranteeing the clarity and accuracy of the captured data. By moving the high-resolution CMOS camera 1004 downwards, the modified dispersant suspended in the transparent glass sample bottle 4 can be fully detected and identified. All identified particles are divided according to their equivalent diameter (e.g., 5-15μm, 15-25μm, 25-50μm, 50-100μm, >100μm, etc.). The cleanliness of the modified nucleating agent can be determined by comparing the number of particles in each size range with the preset qualified threshold. In summary, by cooperating with the driving mechanism 9 and the positioning mechanism 3, the transparent glass sample bottle 4 can be made to vibrate at varying speeds. In the early stage of detection, rapid vibration allows the modified nucleating agent to be quickly and evenly dispersed in deionized water. During the detection process, low-speed vibration can avoid the modified nucleating agent from settling in deionized water and affecting the accuracy of the detection data, while also ensuring the accuracy of the captured data, thus better meeting the needs of actual use. Furthermore, since the transparent glass sample bottle 4 is filled with deionized water, the generation of air bubbles during the vibration process can be effectively avoided.

[0020] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0021] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A testing device for detecting the cleanliness of modified nucleating agents, comprising a base (1), characterized in that: A fixed sealing box (2) is fixed on the base (1). A positioning mechanism (3) for positioning transparent glass sample bottles (4) is installed on the fixed sealing box (2). A cylinder (5) is fixed on the right side of the base (1). A moving plate (6) is fixed at the output end of the cylinder (5). A movable sealing box (7) is provided on the left side of the moving plate (6). The movable sealing box (7) and the fixed sealing box (2) cooperate to form a sealed cavity. The drive mechanism (9) uses a variable speed transmission to achieve uniform mixing of materials in the transparent glass sample bottle (4). The drive mechanism (9) is installed in the base (1) and is connected to the moving plate (6). The testing mechanism (10) is used to test the material inside the transparent glass sample bottle (4), and the testing mechanism (10) is installed inside the movable sealed box (7).

2. The testing equipment for detecting the cleanliness of modified nucleating agents according to claim 1, characterized in that: The positioning mechanism (3) includes a vertical rod (301) that is slidably connected to the fixed sealing box (2), and the vertical rod (301) is symmetrically distributed about the center line of the fixed sealing box (2). A first spring (302) is fixed between the vertical rod (301) and the fixed sealing box (2). At the same time, a positioning sleeve (303) is fixed on the vertical rod (301) and disposed inside the fixed sealing box (2). The positioning sleeve (303) is nested with the transparent glass sample bottle (4).

3. The testing equipment for detecting the cleanliness of modified nucleating agents according to claim 1, characterized in that: The movable plate (6), the movable sealing box (7) and the guide rod (8) are slidably connected, and the guide rod (8) is symmetrically fixed in the base (1) from front to back.

4. The testing equipment for detecting the cleanliness of modified nucleating agents according to claim 1, characterized in that: The movable sealing box (7) is also symmetrically fixed with sliding rods (701) on the top and bottom, and the sliding rods (701) are slidably connected to the moving plate (6), and a second spring (702) is fixed between the movable sealing box (7) and the moving plate (6).

5. The testing equipment for detecting the cleanliness of modified nucleating agents according to claim 1, characterized in that: The drive mechanism (9) includes a first toothed rod (901) symmetrically fixed on the movable plate (6), and a second toothed rod (902) fixed on the side of the first toothed rod (901). The second toothed rod (902), the first toothed rod (901) and the fixed plate (911) form a sliding connection. At the same time, the fixed plate (911) is symmetrically fixed in the base (1). The length of the toothed block on the first toothed rod (901) is less than the distance between the movable sealing box (7) and the fixed sealing box (2).

6. The testing device for detecting the cleanliness of modified nucleating agents according to claim 5, characterized in that: The first rack (901) meshes with the first gear (903) to achieve transmission, and the first gear (903) is fixed on the first rotating shaft (904), and the first rotating shaft (904) is connected to the base (1) by a bearing. At the same time, a second gear (905) is also fixed on the first rotating shaft (904). The second gear (905) and the second rack (902) cooperate to perform transmission, and the distance between the second gear (905) and the second rack (902) is greater than the distance between the movable sealing box (7) and the fixed sealing box (2).

7. The testing device for detecting the cleanliness of modified nucleating agents according to claim 6, characterized in that: The first gear (903) meshes with the transmission gear (906) to achieve transmission, and the transmission gear (906) is fixed on the second rotating shaft (907), and the second rotating shaft (907) is connected to the horizontal plate (908) by a bearing. At the same time, the horizontal plate (908) is fixed on the base (1). A cam (909) is also fixed on the second rotating shaft (907), and the cam (909) is connected to the roller (910) by a rolling connection. The roller (910) is connected to the lower vertical rod (301) by a bearing. The diameters of the transmission gear (906), the first gear (903), and the second gear (905) increase sequentially.

8. The testing equipment for detecting the cleanliness of modified nucleating agents according to claim 1, characterized in that: The detection mechanism (10) includes a connecting rod (1001) that is rotatably connected to the movable plate (6) at one end, and the other end of the connecting rod (1001) is rotatably connected to the lower end of the support rod (1002). The support rod (1002) is slidably connected to the movable sealing box (7). At the same time, a fixing block (1003) is fixed at the upper end of the support rod (1002), and the fixing block (1003) is set inside the movable sealing box (7).

9. A testing device for detecting the cleanliness of modified nucleating agents according to claim 8, characterized in that: A high-resolution CMOS camera (1004) is fixed at the center of the left side of the fixing block (1003), and supplementary lights (1005) are also symmetrically fixed on the left side of the fixing block (1003).

10. A testing device for detecting the cleanliness of modified nucleating agents according to claim 9, characterized in that: The fixed block (1003) and the round rod (1006) are slidably connected, and the round rod (1006) and the fixed frame (1007) are fixed to each other. A third spring (1008) is fixed between the fixed frame (1007) and the fixed block (1003). At the same time, a sponge pad (1009) is fixed on the fixed frame (1007). The sponge pad (1009) can slide in contact with the transparent glass sample bottle (4), and the sponge pad (1009) is symmetrically distributed about the center line of the high-resolution CMOS camera (1004).

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