Sample dipping device in drop melting point measurement
By designing the support frame and positioning slider system in the dipping device, the problem of inconsistent dipping depth is solved, the accuracy and safety of dropping melting point determination are achieved, and the operation process is simplified.
Patent Information
- Application Number
- CN202422493054.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-10-15
AI Technical Summary
In the existing dropping melting point determination process, it is difficult to ensure consistency in the sample dipping operation, resulting in poor repeatability and reproducibility of the measurement results, and the thermometer is easily damaged, affecting product quality and personnel health.
A sample dipping device was designed, which included a support frame, a support rod, an elastic device and a positioning slider. The positioning slider was used to control the position of the thermometer fixing rod to ensure consistent dipping depth each time and avoid contact between the thermometer and the container.
The accuracy and repeatability of the drop melting point determination are significantly improved, the measurement error is reduced, the thermometer is protected, and the operation complexity and cost are reduced.
Smart Images
Figure CN223413243U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of dropping melting point determination, and more precisely, to a sample dipping device for dropping melting point determination. Background Art
[0002] The drop melting point essentially reflects the weight of the wax components. It is a crucial quality indicator for products ranging from paraffin wax to microcrystalline wax and coal-based Fischer-Tropsch wax. It reflects the melting temperature of the wax product and indirectly reflects the carbon chain length and molecular weight of its components. In production, it is directly related to process difficulty and cost.
[0003] Determination of the drop melting point is a task that all wax manufacturers attach great importance to. The drop melting point not only distinguishes high-melting-point waxes from microcrystalline waxes, but also helps to determine the operating status and performance of production equipment. Therefore, the drop melting point indicator is an essential and important test item for major wax product manufacturers and R&D institutions.
[0004] However, the current configuration of dropping melting point analysis instruments is as follows: financially robust manufacturers and R&D institutions generally utilize automated dropping melting point analyzers; smaller manufacturers and R&D institutions, due to limited funds, generally rely on manual measurement instruments, purchasing and assembling devices such as an adjustable electric furnace, a glass bathtub, a dropping melting point thermometer, and test tubes. Whether using automated or manual analyzers, the dropping melting point measurement requires a sample dip, and the entire process requires standard dipping techniques and consistent dipping depth. However, achieving a perfectly consistent dipping depth is difficult for different operators. Even the same operator can produce inconsistent results from multiple tests on the same sample. This process is a major source of error in the sample's dropping melting point. Dipping too deeply can result in a lower drop melting point, while dipping too shallowly can result in a higher drop melting point. This leads to significant variations in the repeatability and reproducibility of the final test results, and can even lead to erroneous results, potentially causing product quality disputes. Secondly, according to the industry standard GB / T 8026-2023, the sample dipping process requires the thermometer bulb to be inserted vertically into the prepared sample and removed immediately after it touches the bottom of the flat-bottomed beaker. However, during the actual dipping process, the thermometer can easily be damaged due to contact with the bottom of the beaker. In particular, the loss of mercury can pose a health risk to the analyst. Furthermore, the thermometer (temperature probe) that comes with the automatic dropping melting point analyzer costs approximately 7,000 yuan. Purchasing a new thermometer not only requires additional capital investment but also carries the risk of damage. Even within the company's own dropping melting point analysis, due to sample dipping issues, the analysis results often fluctuate significantly, resulting in poor comparability and inability to provide accurate basic data for R&D, optimizing production processes, and improving product quality. Utility Model Content
[0005] In view of this, an embodiment of the present disclosure provides a sample dipping device for dropping melting point determination to solve the technical defects existing in the prior art.
[0006] To achieve the above objectives, the present disclosure adopts the following technical solutions:
[0007] The present disclosure provides a sample dipping device for measuring a dropping melting point, comprising:
[0008] a first support frame, the first support frame being composed of a first vertical rod and a first base, the first vertical rod having two opposite ends, respectively denoted as a first vertical rod first end and a first vertical rod second end, the first vertical rod first end being fixedly connected to the first base, and the first vertical rod second end extending upward in a vertical direction;
[0009] A support rod having two opposite ends, respectively denoted as a first end of the support rod and a second end of the support rod, wherein the first end of the support rod is fixedly connected to the second end of the first vertical rod, and the second end of the support rod extends upward in a vertical direction and is fixedly connected to the fixing plate;
[0010] an elastic device, wherein one end of the elastic device is fixedly connected to the fixing plate and the other end is connected to a thermometer fixing rod, the thermometer fixing rod extending in a horizontal direction, the elastic device is configured to control the movement position of the thermometer fixing rod, and the thermometer fixing rod is configured to fix the thermometer;
[0011] A positioning slider is sleeved on the support rod and can move along the extension direction of the support rod. The positioning slider is configured to limit the position of the thermometer fixing rod.
[0012] In one embodiment of the present disclosure, the sample dipping device in the dropping melting point determination further comprises:
[0013] a beaker configured to hold a sample to be tested;
[0014] an electric furnace configured to heat the sample to be tested in the beaker;
[0015] a second support frame, the second support frame being composed of a second vertical rod and a second base, the second vertical rod being configured such that one end is mounted on the second base and the other end extends upward in a vertical direction;
[0016] A support plate is configured such that one end of the support plate is fixed to the second vertical rod via a fixing member, and the other end extends in a horizontal direction. The support plate is configured to place the electric furnace.
[0017] In one embodiment of the present disclosure, the fixing member is mounted on the second vertical rod. When the position of the support plate needs to be changed, the fixing member is constructed to drive the support plate to move along the extension direction of the second vertical rod and move the support plate to a suitable position on the second vertical rod.
[0018] In one embodiment of the present disclosure, a groove is provided at the second end of the first vertical rod, and the groove is configured to extend vertically from the end surface of the second end of the first vertical rod toward the inside of the first vertical rod, and the groove is configured to connect the first end of the support rod.
[0019] In one embodiment of the present disclosure, the groove is configured to completely match the shape of the support rod, and during installation, the first end of the support rod is vertically inserted into the groove.
[0020] In one embodiment of the present disclosure, the elastic device is constructed to consist of two springs, and the two springs are respectively installed on both sides of the second end of the support rod.
[0021] In one embodiment of the present disclosure, a fastening screw is provided on the positioning slider, and the fastening screw is configured to loosen or lock the positioning slider.
[0022] In one embodiment of the present disclosure, the positioning slider is arranged at a position lower than the thermometer fixing rod.
[0023] In one embodiment of the present disclosure, the thermometer fixing rod, the first support frame and the support rod are all constructed as non-circular solid structures.
[0024] In one embodiment of the present disclosure, the diameter of the first vertical rod is 8-18 mm, and the depth of the groove is 5-15 mm.
[0025] The sample dipping device for dripping melting point determination provided by the present disclosure has a positioning slider that can move along the support rod, and a thermometer fixed to the thermometer fixing rod. The thermometer fixing rod is located above the positioning slider, which facilitates determining the position of the thermometer fixing rod based on the position of the positioning slider. Therefore, the sample dipping depth can be guaranteed to be the same each time, preventing errors in dripping melting point determination caused by different dipping depths. The device can measure results that fully meet the standards for dripping melting point determination, is simple to operate, and has strong practicality. In addition, the sample dipping device does not require the thermometer probe to contact the bottom of the beaker, which can effectively prevent damage to the thermometer during the dipping process.
[0026] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 This is a schematic structural diagram of a sample dipping device in a dropping melting point determination provided by one embodiment of the present disclosure when the top of the bottom of the thermometer just contacts the wax sample liquid surface;
[0028] Figure 2 This is a structural schematic diagram of a sample dipping device in a dropping melting point determination provided by an embodiment of the present disclosure when a thermometer dips a wax sample.
[0029] 1-first support frame; 11-first vertical rod; 111-first end of first vertical rod; 112-second end of first vertical rod; 12-first base;
[0030] 2-support rod; 21-first end of support rod; 22-second end of support rod;
[0031] 3-positioning slider; 4-thermometer fixing rod; 5-fixing plate; 6-groove; 7-thermometer; 8-beaker; 9-electric furnace;
[0032] 10-second support frame; 101-second vertical rod; 102-second base;
[0033] 13-fixing member; 14-support plate;
[0034] 15-elastic device; 151-spring;
[0035] 16-first position; 17-second position. DETAILED DESCRIPTION
[0036] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure.
[0037] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.
[0038] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.
[0039] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.
[0040] The specific embodiments of the present disclosure are described below with reference to the accompanying drawings.
[0041] In this document, “upper”, “lower”, “front”, “back”, “left”, “right”, etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.
[0042] In this article, "first", "second", etc. are only used to distinguish each other, and do not indicate the importance and order, or the prerequisite for each other's existence.
[0043] In this document, “equal”, “same”, etc. are not strictly limited in a mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or use.
[0044] The present disclosure provides a sample dipping device for dropping melting point determination, which includes a first support frame, a support rod, an elastic device and a positioning slider, wherein the support rod is installed on the first support frame, the elastic device is used to connect the thermometer fixing rod, the thermometer fixing rod is used to fix the thermometer, and the positioning slider is sleeved on the support rod to limit the thermometer fixing rod.
[0045] The sample dipping device for the dropping melting point determination provided by the present disclosure has a positioning slider that can move along the extension direction of the support rod provided on the support rod, and the thermometer is fixed on the thermometer fixing rod, which facilitates the position of the thermometer fixing rod to be limited by the positioning slider, thereby ensuring that the dipping depth is the same each time, preventing errors in the dropping melting point determination due to different dipping depths. The device can make the measurement results fully meet the standards for the dropping melting point determination, and is simple to operate and highly practical.
[0046] For ease of understanding, refer to Figures 1 to 2 , the specific structure and working principle of the sample dipping device in the dropping melting point determination disclosed in the present invention are explained in detail with reference to the embodiments.
[0047] The present disclosure provides a sample dipping device for dropping melting point determination, comprising: a first support frame 1, a support rod 2, an elastic device 15 and a positioning slider 3.
[0048] like Figure 1 As shown, the first support frame 1 is composed of a first vertical rod 11 and a first base 12. The first vertical rod 11 has two opposite ends, which are respectively marked as the first vertical rod first end 111 and the first vertical rod second end 112. The first vertical rod first end 111 is fixedly connected to the first base 12, and the first vertical rod second end 112 extends upward in the vertical direction.
[0049] Specifically, first end 111 of the first vertical rod is fixedly connected to first base 12, ensuring the stability of the entire support frame. First base 12 is typically designed as a flat plate structure with a certain width and thickness, and can be round, square, or other shapes, to facilitate close contact with the test bench and provide sufficient support area and stability. Second end 112 of the first vertical rod extends upward in the vertical direction to support the equipment above.
[0050] The support rod 2 has two opposite ends, which are respectively marked as the first end 21 of the support rod and the second end 22 of the support rod. The first end 21 of the support rod is fixedly connected to the second end 112 of the first vertical rod, and the second end 22 of the support rod extends upward in the vertical direction and is fixedly connected to the fixing plate 5.
[0051] Specifically, such as Figure 1 As shown, the first end 21 of the support rod is sleeved with the second end 112 of the first vertical rod, wherein the diameter of the support rod 2 is constructed to be smaller than the diameter of the first vertical rod. When sleeved, the support rod 2 partially enters the interior of the first vertical rod 11. The purpose of sleeve connection is to make the support rod 2 and the first vertical rod 11 a detachable structure. The purpose of setting it as a detachable structure is to facilitate storage, and it is easier to install other components on the support rod 2 with a smaller diameter. The second end 22 of the support rod extends upward in the vertical direction and is fixedly connected to the fixing plate 5. The function of the fixing plate 5 is to limit the movement range of other components installed on the support rod 2 to prevent other components from falling off the support rod 2.
[0052] An elastic device 15 is provided between the fixing plate 5 and the thermometer fixing rod 4. The elastic device 15 is configured to be fixedly connected to the fixing plate 5 at one end and connected to the thermometer fixing rod 4 at the other end. The thermometer fixing rod 4 extends in the horizontal direction. The elastic device 15 is configured to control the movement position of the thermometer fixing rod 4. The thermometer fixing rod 4 is configured to fix the thermometer 7.
[0053] Specifically, such as Figure 1 As shown, one end of the elastic device 15 is fixedly connected to the fixing plate 5, and the other end is connected to the thermometer fixing rod 4. The main function of the elastic device 15 is to provide a certain elastic support and displacement control capability for the thermometer fixing rod 4. Such a design can ensure that the thermometer 7 remains stable during use.
[0054] The positioning slider 3 is sleeved on the support rod 2 and can move along the extension direction of the support rod 2. The positioning slider 3 is configured to limit the position of the thermometer fixing rod 4.
[0055] Specifically, such as Figure 1As shown, the positioning slider 3 is sleeved on the support rod 2 and can move along the extension direction of the support rod 2. In order to ensure that the depth of the thermometer 7 inserted into the sample remains unchanged when dipping the sample, so that the thermometer can be dipped in the appropriate position, the thermometer fixing rod 4 must be accurately limited. The positioning slider 3 is usually equipped with an adjustment device, which can be manually adjusted through a knob or handle. By adjusting the position of the positioning slider 3, the user can easily position the thermometer fixing rod 4 in the ideal position, thereby ensuring that the thermometer 7 is always within the most suitable measurement range.
[0056] Since a positioning slider that can move along the extension direction of the support rod 2 is provided on the support rod 2, and the thermometer is fixed on the thermometer fixing rod 4, it is convenient to limit the position of the thermometer fixing rod 4 by the positioning slider, so as to ensure that the dipping depth of the sample is the same each time, and prevent errors in the drip melting point determination due to different dipping depths. This device can make the measurement results fully meet the standards for drip melting point determination, and it is simple to operate and highly practical.
[0057] In one embodiment of the present disclosure, the elastic device 15 is constructed by two springs 151 , and the two springs 151 are respectively installed on both sides of the second end 22 of the support rod.
[0058] Specifically, such as Figure 1 As shown, the elastic device 15 is composed of two springs 151, which are respectively installed on both sides of the second end 22 of the support rod, and the two springs 151 are fixedly connected to the thermometer fixing rod 4. The main purpose of this design is to provide a stable and elastic support mechanism to adapt to the movement of the thermometer fixing rod 4 and prevent the thermometer fixing rod 4 from suddenly and significantly lowering its height, thereby causing the top of the thermometer 7 fixed on the thermometer fixing rod 4 to hit the bottom of the beaker 8, causing damage to the thermometer 7.
[0059] In one embodiment of the present disclosure, a fastening screw is provided on the positioning slider 3 , and the fastening screw is configured to loosen or lock the positioning slider 3 .
[0060] Specifically, such as Figure 1 As shown, by adjusting the fastening screws, the user can easily adjust the position of the positioning slider 3 on the support rod 2, and then adjust the position of the thermometer fixing rod 4. The fastening screws ensure the stability of the movement of the positioning slider 3 on the support rod 2, ensuring that the position of the thermometer 7 will not change during the measurement process.
[0061] In one embodiment of the present disclosure, the positioning slider 3 is disposed at a position lower than the thermometer fixing rod 4 .
[0062] Specifically, such as Figure 1As shown, the positioning slider 3 is set at a position lower than the thermometer fixing rod 4, which can limit the lowest descending position of the thermometer fixing rod 4, ensuring that the thermometer 7 will not descend below the predetermined position, thereby protecting the thermometer 7 from damage and ensuring that the depth reached by the thermometer 7 during each dipping operation is the same.
[0063] In one embodiment of the present disclosure, the thermometer fixing rod 4 , the first support frame 1 and the support rod 2 are all constructed as non-circular solid structures.
[0064] Specifically, such as Figure 1 As shown, the thermometer fixing rod 4, the first support frame 1 and the support rod 2 are all constructed as non-circular solid structures, mainly to improve the stability and rigidity of the structure, while avoiding unnecessary rotation or offset problems during use. Due to the non-circular cross-sectional design, these components can avoid unnecessary rotation when installed on the corresponding support structure, thereby ensuring that the thermometer 7 can remain in the predetermined position.
[0065] In one embodiment of the present disclosure, the diameter of the first vertical rod 11 is 8-18 mm, and the depth of the groove 6 is 5-15 mm.
[0066] Specifically, such as Figure 1 As shown, the diameter of the first vertical rod 11 is designed to be between 8 and 18 mm. Such a size range can ensure that the vertical rod has sufficient strength and stability while remaining light and easy to operate and carry. The depth of the groove 6 is designed to be between 5 and 15 mm. Such a depth range can ensure that the first end 21 of the support rod can be firmly installed in the groove 6.
[0067] In one embodiment of the present disclosure, the sample dipping device in the dropping melting point determination further includes: a beaker 8 , an electric furnace 9 , a second support frame 10 and a support plate 14 .
[0068] The beaker 8 is configured to hold the sample to be tested; the electric furnace 9 is configured to heat the sample to be tested in the beaker 8; the second support frame 10 is composed of a second vertical rod 101 and a second base 102, and the second vertical rod 101 is configured so that one end is mounted on the second base 102 and the other end extends upward in a vertical direction; the support plate 14 is configured so that one end is fixed to the second vertical rod 101 by a fixing member 13 and the other end extends in a horizontal direction, and the support plate 14 is configured to place the electric furnace 9.
[0069] Specifically, such as Figure 1As shown, the beaker 8 is used to hold the sample to be tested and is placed above the electric furnace 9. The electric furnace 9 is used to heat the sample in the beaker 8. The heating power can be adjusted according to experimental needs. The second support frame 10 provides a supporting structure for supporting the electric furnace 9. The support plate 14 provides a horizontal platform for the electric furnace 9 to ensure that the electric furnace 9 can be in a stable position during the heating process.
[0070] In one embodiment of the present disclosure, the fixing member 13 is mounted on the second vertical rod 101. When the position of the support plate 14 needs to be changed, the fixing member 13 is constructed to drive the support plate 14 to move along the extension direction of the second vertical rod 101 and move the support plate 14 to a suitable position of the second vertical rod 101.
[0071] Specifically, such as Figure 1 As shown, the fixing member 13 is generally composed of a fastener and an adjusting device. The fastener is the core part of the fixing member 13 and is used to fasten the support plate 14 to the second vertical rod 101. The fastener can be a screw, a snap or other type of fastening device. The adjusting device is used to adjust the tightness of the fastener to ensure that the support plate 14 can be easily moved and can be firmly fixed after being adjusted to the desired position.
[0072] In one embodiment of the present disclosure, the second end 112 of the first vertical rod is provided with a groove 6, and the groove 6 is configured to extend vertically toward the inside of the first vertical rod 11 starting from the end surface of the second end 112 of the first vertical rod, and the groove 6 is configured to be used for connecting the first end 21 of the support rod.
[0073] Specifically, such as Figure 1 As shown, the groove 6 is constructed to start from the end face of the second end 112 of the first vertical rod and extend vertically into the first vertical rod 11. The main purpose of this design is to facilitate the connection between the first end 21 of the support rod and the first vertical rod 11 and ensure the stability of the connection.
[0074] In one embodiment of the present disclosure, the groove 6 is configured to completely match the shape of the support rod 2 . During installation, the first end 21 of the support rod is vertically inserted into the groove 6 .
[0075] Specifically, such as Figure 1 As shown, the depth of the groove 6 needs to be deep enough to ensure that the first end 21 of the support rod can be firmly embedded therein. The shape of the groove 6 is usually rectangular or circular, depending on the cross-sectional shape of the support rod 2. The size of the groove 6 needs to match the size of the first end 21 of the support rod to ensure a tight connection without gaps. The inner surface of the groove 6 is specially treated to increase friction, so that the connection between the first end 21 of the support rod and the first vertical rod 11 is more stable.
[0076] The following are the operating steps of three experiments and the final test results of the three experiments to illustrate that the device can significantly improve the accuracy of the drop melting point test results.
[0077] Experiment 1, specifically, Figure 1 and Figure 2 As shown, the specific implementation method of the drip melting point determination using the sample dipping device disclosed in the present invention is as follows: 802# rubber wax is selected as the sample, and the drip melting point of the sample is 93.4°C. An appropriate amount of 802# rubber wax is weighed into a beaker 8, and the beaker is placed on an electric furnace 9 and heated to a drip melting point of 11°C or above under stirring; then the drip melting point thermometer 7 is fixed to the thermometer fixing rod 4, the fastening screw of the adjustment positioning slider 3 is loosened, and the thermometer 7 is pressed down so that the top of the bottom just touches the wax sample liquid surface, the slider fixing screw is tightened, and a mark is made, which is recorded as the first position 16. Based on this, the positioning slider 3 is pressed down 12mm±1mm, and finally the slider fixing screw is tightened to make a mark. Note, record it as the second position 17; transfer the thermometer fixing rod 4 and the dropping melting point thermometer 7 to the cold bath together to cool the thermometer 7 to about 4°C. If the dropping melting point thermometer 7 is stuck with wax sample, wipe it off with a paper towel, and then check whether the temperature of the wax sample is above the expected dropping melting point by 11°C. If so, install the above-mentioned dropping melting point thermometer 7 and the thermometer fixing rod 4 to the first position 16 as soon as possible, quickly press down the thermometer 7 to make the thermometer 7 reach the second position 17, and then dip the sample; then remove the thermometer 7 and place it on the dropping melting point tester for measurement, or place the thermometer 7 on a manual dropping melting point tester for standard test, and record the test results of 802# rubber wax dropping melting point as shown in Table 1.
[0078] Table 1
[0079]
[0080] In Experiment 2, 52# Fischer-Tropsch wax was selected as the sample. The drop melting point of the sample was 60.8°C. The experimental steps were based on those of Example 1, and the drop melting point test results of 52# Fischer-Tropsch wax were obtained as shown in Table 2.
[0081] Table 2
[0082]
[0083] In Experiment 3, 100# Fischer-Tropsch wax was selected as the sample. The drop melting point of the sample was 105.5°C. The experimental steps were based on those of Example 1, and the drop melting point test results of 100# Fischer-Tropsch wax were obtained as shown in Table 3.
[0084] Table 3
[0085]
[0086] According to the test results of the melting point of wax drops of different samples in Tables 1, 2 and 3, the test results of different experimenters when not using the present device for dipping samples are different, and the results vary greatly; the experimental results obtained by the same experimenter when not using the present device for dipping samples are different from the experimental results obtained when using the present device for dipping samples, and the relative error of the latter is smaller; the test results of different experimenters when using the present device for dipping samples are similar, and the relative errors are all less than 0.5%; and changing the sample will not affect the regularity of the test results.
[0087] The dipping device for the dripping melting point determination provided by the present disclosure has a movable positioning slider 3 provided on the support rod 2, and the thermometer 7 is fixed on the thermometer fixing rod 4. The thermometer fixing rod 4 is located above the positioning slider 3, which makes it easy to determine the position of the thermometer fixing rod 4 according to the position of the positioning slider 3. Therefore, the dipping depth of the sample can be guaranteed to be the same each time, and errors in the dripping melting point determination caused by different dipping depths can be prevented. The device can significantly reduce the measurement error caused by manual measurement, so that the measurement results fully meet the standards of the corresponding methods. In addition, the device is simple to operate and highly practical, does not require any restrictions or requirements on the sample dipping container, requires little investment, and is made of common, ordinary, low-value consumables.
[0088] It should be noted that for the aforementioned method embodiments, for ease of description, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present disclosure is not limited by the order of the actions described, because according to the present disclosure, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present disclosure.
[0089] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.
[0090] The preferred embodiments of the present disclosure disclosed above are intended only to help illustrate the present disclosure. The optional embodiments do not describe all details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made based on the content of the present disclosure. The present disclosure selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present disclosure, so that those skilled in the art can better understand and utilize the present disclosure. The present disclosure is limited only by the claims and their full scope and equivalents.
Claims
1. A sample dipping device for measuring the dropping melting point, characterized in that: include: A first support frame (1), the first support frame (1) is composed of a first vertical rod (11) and a first base (12), the first vertical rod (11) having two opposite ends, respectively denoted as a first vertical rod first end (111) and a first vertical rod second end (112), the first vertical rod first end (111) being fixedly connected to the first base (12), and the first vertical rod second end (112) extending upward in a vertical direction; A support rod (2), the support rod (2) having two opposite ends, respectively denoted as a first support rod end (21) and a second support rod end (22), the first support rod end (21) being fixedly connected to the second end (112) of the first vertical rod, and the second support rod end (22) extending upward in a vertical direction and being fixedly connected to the fixing plate (5); an elastic device (15), wherein one end of the elastic device (15) is fixedly connected to the fixing plate (5) and the other end is connected to a thermometer fixing rod (4), wherein the thermometer fixing rod (4) extends in a horizontal direction, and the elastic device (15) is configured to control the moving position of the thermometer fixing rod (4), and the thermometer fixing rod (4) is configured to fix the thermometer (7); A positioning slider (3) is sleeved on the support rod (2) and is movable along the extension direction of the support rod (2). The positioning slider (3) is configured to limit the position of the thermometer fixing rod (4).
2. The sample dipping device according to claim 1, wherein The device further comprises: A beaker (8), wherein the beaker (8) is configured to hold a sample to be tested; an electric furnace (9), wherein the electric furnace (9) is configured to heat the sample to be tested in the beaker (8); a second support frame (10), the second support frame (10) being composed of a second vertical rod (101) and a second base (102), the second vertical rod (101) being configured such that one end is mounted on the second base (102) and the other end extends upward in a vertical direction; A support plate (14), wherein one end of the support plate (14) is fixed to the second vertical rod (101) via a fixing member (13), and the other end extends in a horizontal direction. The support plate (14) is configured to place the electric furnace (9).
3. The sample dipping device according to claim 2, wherein The fixing member (13) is sleeved on the second vertical rod (101). When the position of the support plate (14) needs to be changed, the fixing member (13) is configured to drive the support plate (14) to move along the extension direction of the second vertical rod (101) and move the support plate (14) to a suitable position on the second vertical rod (101).
4. The sample dipping device according to claim 1, wherein The second end (112) of the first vertical rod is provided with a groove (6), and the groove (6) is configured to extend vertically from the end surface of the second end (112) of the first vertical rod toward the inside of the first vertical rod (11), and the groove (6) is configured to be connected to the first end (21) of the support rod.
5. The sample dipping device according to claim 4, wherein: The groove (6) is constructed to completely match the shape of the support rod (2); during installation, the first end (21) of the support rod is inserted into the groove (6) in a vertical direction.
6. The sample dipping device according to claim 1, wherein The elastic device (15) is constructed to consist of two springs (151), and the two springs (151) are respectively installed on both sides of the second end (22) of the support rod.
7. The sample dipping device according to claim 1, wherein: A fastening screw is provided on the positioning slide block (3), and the fastening screw is configured to loosen or lock the positioning slide block (3).
8. The sample dipping device according to claim 1, wherein The positioning slide block (3) is arranged at a position lower than the thermometer fixing rod (4).
9. The sample dipping device according to claim 1, wherein: The thermometer fixing rod (4), the first support frame (1) and the support rod (2) are all constructed as non-circular solid structures.
10. The sample dipping device according to claim 4, wherein: The diameter of the first vertical rod (11) is 8 to 18 mm, and the depth of the groove (6) is 5 to 15 mm.