Sample introduction device

Abstract

The utility model discloses a sampling device, and belongs to the technical field of testing equipment. The sample introduction device comprises a test container and a sample introduction assembly, and the test container is used for accommodating a first mixed solution containing a sample; the sample introduction assembly comprises a sample introduction container, the sample introduction container is used for accommodating a second mixed solution containing a sample, the concentration of the sample in the second mixed solution is greater than that of the sample in the first mixed solution, and the sample introduction container is configured to add the second mixed solution into the test container so as to continuously increase the concentration of the sample in the first mixed solution. According to the sample introduction device provided by the invention, the sample introduction container is configured to add the second mixed solution into the test container to continuously increase the concentration of the sample in the first mixed solution, so that the concentration of the mixed solution in the test container can be continuously adjusted, and the shading degree of the sample can be quickly adjusted to meet the test requirement; therefore, the particle size testing efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of testing equipment technology, and in particular to a sample introduction device. Background Art

[0002] The size of material particles can affect various aspects of material properties, flow characteristics, and reaction rates, thus requiring particle size testing. Particle size testing methods include laser particle size analysis, dynamic light scattering, resistance counting, microscopic observation, air atomization, and scanning electron microscopy. In laser particle size analyzer testing, the sample's opacity is a crucial process parameter. Excessive opacity can lead to multiple scattering, resulting in lower measurement results; conversely, insufficient opacity results in poor representativeness or even invalid results. The sample's opacity is related to its concentration and absorption coefficient. In related technologies, to control the sample's opacity to meet testing requirements, pretreatment and dispersion in an external beaker are typically required, involving multiple trial mixes, leading to low particle size testing efficiency. Utility Model Content

[0003] This application provides a sample introduction device that can solve the technical problem of low efficiency in particle size testing.

[0004] To address the aforementioned technical problems, the sampling device provided in this application is used in conjunction with a laser particle size analyzer to test the particle size of a sample. The sampling device includes a test container and a sampling assembly. The test container is used to contain a first mixture containing the sample. The sampling assembly includes a sampling container, which is used to contain a second mixture containing the sample. The concentration of the sample in the second mixture is greater than the concentration of the sample in the first mixture. The sampling container is configured to add the second mixture to the test container to continuously increase the concentration of the sample in the first mixture.

[0005] In one embodiment, the injection assembly includes an injection tube and a first control valve. One end of the injection tube is connected to the injection container, and the other end of the injection tube extends to the side where the test container is located. The first control valve is disposed on the injection tube. The first control valve adjusts the flow rate of the second mixture flowing through the injection tube to the test container by controlling the opening time of the injection tube, so as to continuously increase the concentration of the sample in the first mixture.

[0006] In one embodiment, the sample introduction assembly includes a first mixer disposed within the sample introduction container, the first mixer being used to disperse the sample within the sample introduction container.

[0007] In one embodiment, the first mixer includes at least one of an ultrasonic vibrator and a rotating stirring paddle.

[0008] In one embodiment, the injection assembly includes a container cap that can be closed onto the injection container to prevent a second mixture from overflowing the injection container during sample dispersion.

[0009] In one embodiment, the sample introduction device includes a support for supporting the sample introduction container so that the bottom wall of the sample introduction container is higher than the highest point of the liquid level in the test container.

[0010] In one embodiment, the support connects the test container and the injection container, and the support is detachably connected to at least one of the test container and the injection container.

[0011] In one embodiment, the sample injection assembly includes a discharge tube and a second control valve. The discharge tube is connected to the sample injection container, and the second control valve is disposed on the discharge tube and is used to control the discharge of the second mixture in the sample injection container.

[0012] In one embodiment, a second mixer is provided inside the test container for dispersing the sample in the test container.

[0013] In one embodiment, the second mixer includes at least one of an ultrasonic vibrator and a rotating stirring paddle.

[0014] The sampling device provided in this application includes a test container and a sampling assembly. The test container is used to contain a first mixture containing a sample. The sampling assembly includes a sampling container for containing a second mixture containing a sample. The concentration of the sample in the second mixture is greater than the concentration of the sample in the first mixture. The sampling container is configured to add the second mixture to the test container to continuously increase the concentration of the sample in the first mixture. This allows the concentration of the mixture in the test container to be continuously adjusted, which is beneficial for quickly adjusting the occlusion of the sample to meet testing requirements, thereby improving the efficiency of particle size testing. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the sample introduction device provided in this application;

[0017] Figure 2 This is a cross-sectional structural schematic diagram of an embodiment of the sample introduction device provided in this application;

[0018] Figure 3 This is a cross-sectional structural schematic diagram of another embodiment of the sample introduction device provided in this application;

[0019] Figure 4 This is a cross-sectional structural schematic diagram of another embodiment of the sample introduction device provided in this application.

[0020] Explanation of reference numerals in the attached figures:

[0021] Sample introduction device: 100;

[0022] Test container: 10; Second mixer: 11;

[0023] Sample injection assembly: 20; Sample injection container: 21; Sample injection tube: 22; First control valve: 23; First mixer: 24; Container cap: 25; Sample discharge tube: 26; Second control valve: 27;

[0024] Bracket: 30. DETAILED DESCRIPTION

[0025] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0026] In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "first," "second," and "third" in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indication will also change accordingly. The terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0027] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] This application provides a sample introduction device for use with a laser particle size analyzer to test the particle size of a sample. Please refer to [link to relevant documentation]. Figure 1 , Figure 2 The sample introduction device 100 may include a test container 10 and a sample introduction assembly 20. The test container 10 has a containing space and is used to contain a first mixture containing the sample. The laser particle size analyzer can obtain the particle size information of the sample by testing the first mixture. When the light beam shines on the sample particles, the beam is blocked by the particles, and part of the light will be scattered. The propagation direction of the scattered light will form an angle with the propagation direction of the main beam. The size of the scattering angle is related to the size of the particles. The larger the particles, the smaller the angle of the scattered light; the smaller the particles, the larger the angle of the scattered light. By obtaining the angle data of the beam, the particle size of the sample can be obtained. At the same time, the intensity of the scattered light represents the number of sample particles. By measuring the intensity of the scattered light at different angles, the particle size distribution of the sample can be obtained.

[0029] Please see Figure 1 , Figure 2The sample introduction component 20 includes a sample introduction container 21, which has a containing space for holding a second mixture containing the sample. The first mixture in the test container 10 can be prepared using an external beaker or using the sample introduction component 20. The concentration of the sample in the second mixture is greater than the concentration of the sample in the first mixture. The second mixture can be prepared using an external beaker or using the sample introduction component 20. When the first mixture is prepared using the sample introduction component 20, a portion of the first mixture can be reserved in the sample introduction container 21, and the sample can be added to the reserved first mixture to further prepare a second mixture with a higher sample concentration based on the first mixture, which facilitates the preparation of the second mixture. The sample introduction container 21 is configured to add the second mixture to the test container 10 to continuously increase the concentration of the sample in the first mixture. According to the working principle of the laser particle size analyzer, the concentration of the sample in the mixture is based on the principle that there is no secondary scattering between sample particles. Theoretically, the spacing between sample particles in the mixture should be about three times the particle diameter. If the concentration of the sample in the mixture is too high, the shading will be too great, which can easily lead to multiple scattering and result in lower measurement values. Conversely, if the concentration of the sample in the mixture is too low, the shading will be too small, resulting in too few particles and poor representativeness of the test results, which may even render the test results invalid. Continuously increasing the concentration of the sample in the first mixture means that the concentration of the sample in the first mixture increases gradually, thereby gradually changing the shading of the mixture and preventing excessive shading caused by a sudden increase in the concentration of the sample in the first mixture. By adding a second mixture to the test container 10, the concentration of the sample in the first mixture can be adjusted so that the shading of the sample in the first mixture is within the test range of the laser particle size analyzer.

[0030] The sample introduction device 100 provided in this application includes a test container 10 and a sample introduction component 20. The sample introduction component 20 includes a sample introduction container 21, which is configured to add a second mixture to the test container 10 to continuously increase the concentration of the sample in the first mixture. This allows the concentration of the mixture in the test container 10 to be continuously adjusted, which is beneficial for quickly adjusting the occlusion of the sample to meet the testing requirements, thereby improving the efficiency of particle size testing.

[0031] The sample injection container 21 may be provided with an overflow channel connecting to the test container 10, through which the second mixture flows to the test container 10; furthermore, the sample injection container 21 may contain a push rod, which overflows from the sample injection container 21 and flows to the test container 10 through the overflow channel when the push rod is immersed in the second mixture, thereby adjusting the flow rate of the second mixture to the test container 10 by controlling the volume of the push rod immersed in the second mixture, so as to continuously increase the concentration of the sample in the first mixture.

[0032] Alternatively, a rotating mechanism can be connected to the injection container 21, which can drive the injection container 21 to rotate. The injection container 21 is tilted in the vertical direction, and the second mixture can flow to the test container 10. The flow rate of the second mixture flowing to the test container 10 can be adjusted by adjusting the tilt angle of the injection container 21 in the vertical direction, so as to continuously increase the concentration of the sample in the first mixture.

[0033] In one embodiment, if Figure 1 , Figure 2 As shown, the sample injection assembly 20 includes an injection tube 22 and a first control valve 23. One end of the injection tube 22 is connected to the sample injection container 21, and the other end extends to the side of the test container 10. The second mixture can flow to the test container 10 through the injection tube 22. The injection tube 22 can be a stainless steel tube, or a plastic or rubber tube. When the injection tube 22 is a rubber tube, a support can be provided to support and fix the injection tube 22. The end of the injection tube 22 connected to the sample injection container 21 can be located close to the bottom wall of the sample injection container 21 so that as much of the second mixture in the sample injection container 21 as possible can flow to the test container 10. The first control valve 23 can be a one-way valve. The first control valve 23 is located on the injection tube 22. The first control valve 23 adjusts the flow rate of the second mixture flowing to the test container 10 through the injection tube 22 by controlling the opening time of the injection tube 22, so as to continuously increase the concentration of the sample in the first mixture. By setting a first control valve 23 on the injection tube 22, the opening time of the injection tube 22 can be easily controlled, thereby controlling the flow rate of the second mixture. This allows the concentration of the sample in the first mixture to increase gradually, which is beneficial for quickly adjusting the shading degree of the sample to meet the testing requirements.

[0034] The second mixture can be stirred using a stirring rod to ensure more uniform sample dispersion within injection container 21. (See also...) Figure 3 In one embodiment, the sample introduction assembly 20 includes a first mixer 24 disposed within the sample introduction container 21. The first mixer 24 disperses the sample within the sample introduction container 21, resulting in more uniform dispersion and preventing sample agglomeration that could affect the accuracy and stability of the test data. By embedding the first mixer 24 within the sample introduction container 21, compared to manual stirring with an external stirring rod, the dispersion of the sample within the sample introduction container 21 is more convenient, efficient, and effective, thus improving the efficiency of particle size testing.

[0035] In one embodiment, the first mixer 24 includes at least one of an ultrasonic vibrator and a rotary stirring paddle. The ultrasonic vibrator and the rotary stirring paddle can be installed at the bottom of the sample inlet container 21 to make the sample in the sample inlet container 21 more uniformly dispersed. The ultrasonic vibrator and the rotary stirring paddle have the characteristics of low noise and uniform dispersion, which can improve the efficiency of dispersion processing, and thus help to improve the efficiency of particle size testing.

[0036] In one embodiment, if Figure 3 As shown, the sample injection assembly 20 includes a container cap 25, which can be closed onto the sample injection container 21. The container cap 25 is used to prevent the second mixture from overflowing from the sample injection container 21 during sample dispersion. By providing the container cap 25 to prevent the second mixture from overflowing from the sample injection container 21 during sample dispersion, material consumption can be saved.

[0037] A water pump can be connected to the injection tube 22, allowing the second solution to flow into the test container 10 under the action of the pump. (See also...) Figure 1 , Figure 2 In one embodiment, the sample introduction device 100 includes a support 30 for supporting the sample introduction container 21, such that the bottom wall of the sample introduction container 21 is higher than the highest point of the liquid surface in the test container 10. The support 30 can be made of stainless steel or a polymer material. By setting the support 30 so that the sample introduction container 21 is positioned above the test container 10, the second solution can flow to the test container 10 under gravity, which can reduce energy consumption and thus reduce the operating cost of the sample introduction device 100.

[0038] The support 30 may not be connected to the test container 10 or the injection container 21. For example, the support 30 is placed on the test container 10 and the injection container 21 is placed on the support 30, thereby supporting the injection container 21 above the test container 10 so that the second solution can flow to the test container 10 under gravity.

[0039] In one embodiment, the support 30 connects the test container 10 and the sample injection container 21, such that the sample injection container 21 and the test container 10 are interconnected. The test container 10 forms the base of the sample injection device 100, enhancing the overall integrity of the sample injection device 100 and preventing the sample injection container 21 from being accidentally touched and tipped over during testing. The support 30 is detachably connected to at least one of the test container 10 and the sample injection container 21. The connection method between the support 30 and the test container 10 or the sample injection container 21 can be threaded, adhesive, or snap-fit, etc. The detachable connection between the support 30 and at least one of the test container 10 and the sample injection container 21 allows the sample injection container 21 to be disassembled, thereby facilitating the cleaning of the sample injection container 21.

[0040] Please see Figure 1 , Figure 2In one embodiment, the sample injection assembly 20 further includes a discharge tube 26 and a second control valve 27. The discharge tube 26 is connected to the sample injection container 21, and the second control valve 27 is disposed on the discharge tube 26. The second control valve 27 is used to control the discharge of the second mixture in the sample injection container 21. The discharge tube 26 can be a stainless steel tube or a plastic tube. The end of the discharge tube 26 connected to the sample injection container 21 can be located close to the bottom wall of the sample injection container 21 to facilitate the drainage of any residual second mixture in the sample injection container 21. By providing the discharge tube 26 and the second control valve 27, the sample injection container 21 can be easily cleaned after use. When the second control valve 27 is opened to drain the residual second mixture in the sample injection container 21, an ultrasonic vibrator can also be activated simultaneously to clean the sample injection container 21, ensuring that the sample injection container 21 is clean and uncontaminated, thereby reducing test errors.

[0041] When adding the second mixture to the test container 10, insufficient mixing between the second and first mixtures may affect the accuracy of the test data. A stirring rod can be used to stir the first mixture to ensure more uniform sample dispersion within the test container 10. In one embodiment, as... Figure 4 As shown, a second mixer 11 is provided inside the test container 10. The second mixer 11 is used to disperse the sample in the test container 10, so that the sample in the test container 10 is more evenly dispersed, thereby improving the accuracy of the test data. By embedding the second mixer 11 inside the test container 10, compared with manual stirring with an external stirring rod, it is more convenient to disperse the sample in the test container 10, the dispersion efficiency is higher, the dispersion effect is better, and it is beneficial to improve the efficiency of particle size testing.

[0042] In one embodiment, the second mixer 11 includes at least one of an ultrasonic vibrator and a rotary stirring paddle. The ultrasonic vibrator and the rotary stirring paddle can be installed at the bottom of the test container 10 to make the sample in the test container 10 more uniformly dispersed. The ultrasonic vibrator and the rotary stirring paddle have the characteristics of low noise and uniform dispersion, which can improve the efficiency of dispersion processing, and thus help to improve the efficiency of particle size testing.

[0043] The above description is only a part of the embodiments of this application and does not limit the scope of protection of this application. Any equivalent device or equivalent process transformation made based on the content of this application specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this application.

Claims

1. A sample introduction device, characterized in that, The sample introduction device is used in conjunction with a laser particle size analyzer to test the particle size of a sample. The sample introduction device includes a test container and a sample introduction assembly. The test container is used to contain a first mixture containing the sample. The sample introduction assembly includes a sample introduction container for containing a second mixture containing the sample, wherein the concentration of the sample in the second mixture is greater than the concentration of the sample in the first mixture, and the sample introduction container is configured to add the second mixture to the test container to continuously increase the concentration of the sample in the first mixture.

2. The sample introduction device according to claim 1, characterized in that, The sample injection assembly includes an injection tube and a first control valve. One end of the injection tube is connected to the sample injection container, and the other end of the injection tube extends to the side where the test container is located. The first control valve is disposed on the injection tube. The first control valve adjusts the flow rate of the second mixture flowing through the injection tube to the test container by controlling the opening time of the injection tube, so as to continuously increase the concentration of the sample in the first mixture.

3. The sample introduction device according to claim 1, characterized in that, The sample introduction assembly includes a first mixer disposed within the sample introduction container, the first mixer being used to disperse the sample within the sample introduction container.

4. The sample introduction device according to claim 3, characterized in that, The first mixer includes at least one of an ultrasonic vibrator and a rotating stirring paddle.

5. The sample introduction device according to claim 4, characterized in that, The sample injection assembly includes a container cap that can be closed onto the sample injection container, and the container cap is used to prevent the second mixture from overflowing the sample injection container when the sample is dispersed.

6. The sample introduction device according to any one of claims 1-5, characterized in that, The sample injection device includes a support for supporting the sample injection container so that the bottom wall of the sample injection container is higher than the highest point of the liquid level in the test container.

7. The sample introduction device according to claim 6, characterized in that, The support connects the test container and the injection container, and the support is detachably connected to at least one of the test container and the injection container.

8. The sample introduction device according to any one of claims 1-5, characterized in that, The sample injection assembly includes a sample discharge tube and a second control valve. The sample discharge tube is connected to the sample injection container, and the second control valve is disposed on the sample discharge tube. The second control valve is used to control the discharge of the second mixture in the sample injection container.

9. The sample introduction device according to any one of claims 1-5, characterized in that, The test container is equipped with a second mixer, which is used to disperse the sample in the test container.

10. The sample introduction device according to claim 9, characterized in that, The second mixer includes at least one of an ultrasonic vibrator and a rotating stirring paddle.

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