Quantitative trace powder sample loading device for crucible

Abstract

The utility model discloses a quantitative trace powder sample loader for a crucible, which comprises a sample loading base provided with an experimental crucible; a quantifying table; the material storage funnel is arranged on the quantifying table and is used for containing experimental powder; the quantifying mechanism is movably arranged on the quantifying table, and the quantifying mechanism is used for feeding a fixed amount of powder into the experiment crucible from the storage funnel. The quantitative filling device has the advantages that the quantitative mechanism is arranged on the quantitative table, quantitative filling of sample micro-powder in the funnel is achieved through the metering hole with the fixed capacity, the metering hole coincides with the blanking hole after filling, sample adding of the crucible is achieved, the funnel, the metering hole and the blanking hole are all made of metal, the inner walls are polished, and the quantitative filling device is simple in structure and convenient to operate. The quantitative mechanism can be flexibly replaced according to needs, the use is convenient and simple, the powder sample adding efficiency of the crucible can be remarkably improved, and the scattering and leakage of a sample cannot be caused.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal analyzer experiments, in particular to a quantitative sample loader for trace powder samples used in crucibles. Background Art

[0002] Thermal analysis instruments are instruments that test the physical or partial chemical properties of samples under programmed temperature. They are widely used in research institutes and in production, R&D, and quality control tests in various industries. During testing, samples of various shapes and materials need to be loaded into a crucible, but the only tools for loading and preparing samples are spoons, scissors, and tweezers. For powder samples, due to the small capacity of the crucible and the crucible mouth diameter of only 5-6mm, it is difficult to control the loading amount with a sample spoon, making it difficult to ensure consistent quantitative measurement each time. Standardized testing cannot be performed, and reliable and comparable valid data cannot be obtained. In addition, the cost of developing and preparing many samples is very high, but because the crucible is too small, samples often spill during the loading process, causing waste and adding unnecessary economic and time costs. Utility Model Content

[0003] The purpose of the utility model is to provide a quantitative sample loader for a micro powder sample for a crucible, so as to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a quantitative sample loader for micro powder samples for crucibles, comprising:

[0005] A sample loading base, wherein the four ends of the sample loading base are provided with support columns, the middle of the sample loading base is provided with a material receiving area, and the material receiving area is provided with an experimental crucible;

[0006] A quantitative platform, the quantitative platform is arranged on the support column;

[0007] A storage funnel, provided on the quantitative table, for containing the experimental powder;

[0008] The quantitative mechanism is movably arranged on the quantitative platform and is used to deliver a fixed amount of powder from a storage funnel into the experimental crucible.

[0009] Preferably, the quantitative table is provided with a chute, a blanking hole is provided on the inner bottom surface of the chute, the opening of the experimental crucible is connected to the blanking hole, and the quantitative mechanism is slidably arranged in the chute.

[0010] Preferably, the quantitative mechanism includes a push rod, a slider, a positioning rod and a return spring. The slider is provided with a downward-through metering hole. The positioning rod and the push rod are arranged on opposite sides of the slider. One end of the push rod extends outward to the outside of the quantitative table. The return spring is sleeved on the positioning rod. One end of the return spring contacts the slider and the other end contacts the inner wall of the slide groove.

[0011] Preferably, the drop hole and the storage funnel are staggered, and the metering hole and the drop hole are movably aligned with the storage funnel.

[0012] Preferably, the storage funnel further comprises a funnel mounting frame, both ends of the funnel mounting frame are threadedly connected with fixing screws, the quantitative table is provided with a pin hole, and the fixing screws are threadedly connected to the pin hole.

[0013] Preferably, the funnel mounting frame is provided with a funnel socket, and the storage funnel is plugged into and fitted with the funnel socket.

[0014] Preferably, the four ends of the quantitative table are provided with support column sockets and ear pins, the support columns are plugged into the support column sockets, and the ear pins are movably connected to the support columns.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention is provided with a quantitative mechanism on the quantitative table, and the quantitative filling of the sample micropowder in the funnel is realized through a metering hole of fixed capacity. After filling, the metering hole coincides with the drop hole to realize the addition of the sample to the crucible. The funnel, metering hole and drop hole are all made of metal, and the inner wall is polished so that the powder will not stick to the wall when loaded, ensuring that it can slide smoothly into the crucible. The quantitative mechanism can be flexibly replaced according to needs, is easy and simple to use, can significantly improve the powder adding efficiency of the crucible, and will not cause the sample to leak. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is an exploded view of the utility model;

[0018] Figure 3 This is a top view of the utility model;

[0019] Figure 4 It is a side view of the utility model.

[0020] In the figure: 1. Sample loading base; 2. Dosing table; 3. Funnel rack; 4. Funnel socket; 5. Fixing screw; 6. Storage funnel; 7. Slide; 8. Return spring; 9. Measuring slide; 10. Push rod; 11. Support column; 12. Laboratory crucible; 13. Locking pin with ear; 14. Dropping hole; 15. Pin hole; 16. Measuring hole; 17. Material receiving area; 18. Positioning rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1 The utility model provides a technical solution, a quantitative sample loader for trace powder samples for crucibles, comprising a sample loading base 1 and support columns 11 fixedly arranged at the four corners of the top of the sample loading base 1, a quantitative platform 2 is installed between the four support columns 11, a chute 7 is provided in the middle of the top of the quantitative platform 2, a quantitative mechanism for measuring trace powders is installed on the chute 7, a drop hole 14 is provided at the bottom of the inner wall of the chute 7, pin holes 15 are provided on both sides of the chute 7, a funnel mounting assembly is installed between the two pin holes 15, a storage funnel 6 is clamped on the funnel mounting assembly, a material receiving area 17 is provided in the middle of the top of the sample loading base 1, an experimental crucible 12 is placed on the material receiving area 17, the four corners of the quantitative platform 2 are threadedly connected with ear lock nails 13, and the ear lock nails 13 are arranged directly opposite the support columns 11.

[0023] See Figure 1 and Figure 2 Furthermore, the quantitative mechanism includes a metering slider 9 and a push rod 10 fixedly arranged at one end of the metering slider 9. A metering hole 16 is opened at the top of the metering slider 9. A return spring 8 and a positioning rod 18 are provided at the other end of the metering slider 9. The return spring 8 is fixedly arranged on the inner wall of the slide groove 7.

[0024] During use, under normal conditions, the metering hole 16 is facing the storage funnel 6, and the metering hole 16 is misaligned with the blanking hole 14. The sample powder for the experiment is placed in the storage funnel 6, and the powder will slide down into the metering hole 16 under the action of gravity. The specific volume of the metering hole 16 is used to measure the sample powder. The push rod 10 is pushed to push the metering slider 9 to squeeze the reset spring 8 to contract until the positioning rod 18 contacts the end of the slide groove 7. At this time, the metering hole 16 and the blanking hole 14 coincide with each other. At this time, the powder in the metering hole 16 will enter the experimental crucible 12 through the blanking hole 14 under the action of gravity. After releasing the push rod 10, the metering slider 9 is automatically reset under the elastic force of the reset spring 8, and the next powder filling can be carried out.

[0025] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4Furthermore, the funnel mounting assembly includes a funnel frame 3 and fixing screws 5 threadedly connected to both ends of the funnel frame 3, the fixing screws 5 are threadedly connected to the pin holes 15, and a funnel socket 4 is opened in the middle of the top of the funnel frame 3, and the funnel socket 4 is arranged opposite the metering hole 16;

[0026] When in use, the funnel frame 3 is made of metal material and is fixed on the quantitative table 2 by fixing screws 5, which is convenient for disassembly and replacement of the metering slider 9.

[0027] When the embodiment of the present application is in use: when it is necessary to replace the metering slider 9 with a metering hole 16 of a different volume, first loosen and remove the fixing screws 5 in sequence, then the funnel frame 3 can be removed as a whole, and the metering slider 9 can be taken out from the slide groove 7 and replaced, which has a wide range of applications.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A quantitative sample loader for micro powder samples for crucibles, characterized in that ,include: A sample loading base, wherein the four ends of the sample loading base are provided with support columns, the middle of the sample loading base is provided with a material receiving area, and the material receiving area is provided with an experimental crucible; A quantitative platform, the quantitative platform is arranged on the support column; A storage funnel, provided on the quantitative table, for containing the experimental powder; The quantitative mechanism is movably arranged on the quantitative platform and is used to deliver a fixed amount of powder from a storage funnel into the experimental crucible.

2. The micro powder sample quantitative loading device for crucible according to claim 1, characterized in that: The quantitative table is provided with a chute, the inner bottom surface of the chute is provided with a drop hole, the opening of the experimental crucible is connected to the drop hole, and the quantitative mechanism is slidably arranged in the chute.

3. The micro powder sample quantitative loading device for crucible according to claim 2, characterized in that: The quantitative mechanism includes a push rod, a slider, a positioning rod and a return spring. The slider is provided with a downward-through metering hole. The positioning rod and the push rod are arranged on opposite sides of the slider. One end of the push rod extends outward to the outside of the quantitative table. The return spring is sleeved on the positioning rod. One end of the return spring contacts the slider and the other end contacts the inner wall of the slide groove.

4. The micro powder sample quantitative loading device for crucible according to claim 3, characterized in that: The drop hole and the storage funnel are staggered, and the metering hole is movably aligned with the drop hole and the storage funnel.

5. The micro powder sample quantitative loading device for crucible according to claim 4, characterized in that: The storage funnel also includes a funnel mounting frame, both ends of the funnel mounting frame are threadedly connected with fixing screws, the quantitative platform is provided with a pin hole, and the fixing screw is threadedly connected to the pin hole.

6. The quantitative sample loader for a trace powder sample for a crucible according to claim 5, characterized in that: The funnel mounting frame is provided with a funnel socket, and the storage funnel is plugged into and matched with the funnel socket.

7. The quantitative sample loader for a trace powder sample for a crucible according to claim 6, characterized in that: The four ends of the quantitative table are provided with support column sockets and ear pins, the support columns are plugged into the support column sockets, and the ear pins are movably connected to the support columns.

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