A support for a crucible

Abstract

The application discloses a support for a crucible, and relates to the field of coal quality analysis, and the support comprises a supporting part and a positioning disc. The positioning hole of the positioning disc comprises an equal-diameter section and a variable-diameter section. The equal-diameter section can be used for limiting the position of the crucible in the horizontal direction. The inner circumferential wall of the variable-diameter section and the outer circumferential surface of the crucible are provided with an avoiding gap. The contact between the positioning disc and the crucible can be reduced as much as possible, the inner circumferential wall of the positioning disc can be prevented from being wrapped on the outer periphery of the crucible, the heat transfer time from the outside of the crucible to the coal sample in the crucible can be reduced, and the equal-diameter section can be prevented from being deformed due to heat under the premise of guaranteeing the structural strength and forming the avoiding gap with the outer periphery of the crucible.

Description

Technical Field

[0001] This application relates to the field of coal quality analysis, and more particularly to a support for a crucible. Background Technology

[0002] In the field of coal quality analysis, a crucible is used to hold a coal sample, which is then fed into a high-temperature furnace for combustion via a crucible support (such as a crucible holder or crucible tray). Some analyses involve collecting the combustion gases for testing, while others use methods such as drum tests to analyze the weight loss and specific gravity. Therefore, feeding a crucible containing a coal sample into a high-temperature furnace for combustion via a crucible support is a common experimental method.

[0003] When testing specific indicators on special coal samples, such as combustion time, combustion temperature, and isothermal time, existing crucible supports can lead to significant differences in experimental results. Research has found the reasons to be: 1. The crucible is placed in the positioning hole of the crucible support. Due to the thickness of the support, it wraps around the crucible, extending the time it takes for heat to transfer from the outside to the inside of the crucible; 2. When the crucible support enters the high-temperature furnace, its own mass causes it to absorb heat, further prolonging the heating time of the crucible and the coal sample inside. Utility Model Content

[0004] This application provides a support for a crucible, which can reduce the time it takes for heat from outside the crucible to transfer to the coal sample inside the crucible, thereby improving testing accuracy.

[0005] This application provides a support for a crucible, the support including a support portion and a positioning plate disposed on the support portion; the positioning plate is provided with a positioning hole sleeved on the outer circumference of the crucible, the upper end face of the positioning hole is used to support the flange of the crucible; in the thickness direction of the positioning plate, the positioning hole includes an equal diameter section and a variable diameter section connected to each other, the inner diameter of the variable diameter section gradually increases in the direction away from the equal diameter section.

[0006] Preferably, the support includes a support rod, one end of which is coaxially connected to the positioning disk.

[0007] Preferably, the upper surface of the positioning disk includes a clearance area and an installation area. The installation area surrounds the outer periphery of the positioning disk. The clearance area is provided with multiple clearance holes that penetrate the positioning disk. The installation area is provided with multiple positioning holes that are spaced apart along the circumference of the positioning disk.

[0008] Preferably, the inner circumferential wall of the positioning hole is connected to the outer circumference of the positioning disk through a notch.

[0009] Preferably, the inner diameter of the equal-diameter section is 1 to 1.2 times the outer diameter of the crucible.

[0010] Preferably, the maximum inner diameter of the variable diameter section is 1.1 to 1.5 times the minimum inner diameter of the variable diameter section.

[0011] Preferably, the inner peripheral wall of the positioning hole is provided with an inner groove, which is recessed in a direction away from the axis of the positioning hole.

[0012] Preferably, there are multiple inner grooves, which are arranged circumferentially along the positioning hole.

[0013] Preferably, along the thickness direction of the positioning disk, the inner groove connects the upper surface and the lower surface of the positioning disk.

[0014] Preferably, the minimum inner diameter of the variable diameter section is equal to the inner diameter of the constant diameter section, and the inner diameter of the constant diameter section is 1 to 1.5 times the outer diameter of the crucible.

[0015] The support component of this application has at least the following beneficial effects: The support component of this application includes a support part and a positioning plate. The upper surface of the positioning plate can serve as a support surface to support the crucible in the height direction. The positioning plate is provided with a positioning hole fitted onto the outer circumferential surface of the crucible. The positioning hole includes a constant diameter section and a variable diameter section. The constant diameter section can be used to limit the crucible in the horizontal direction. The inner diameter of the variable diameter section gradually increases so that there is a clearance between the inner circumferential wall of the variable diameter section and the outer circumferential surface of the crucible. This can minimize the contact between the positioning plate and the crucible, prevent the inner circumferential wall of the positioning plate from adhering to the outer periphery of the crucible, reduce the heat transfer time from outside the crucible to the coal sample inside the crucible, and improve the testing accuracy. At the same time, since the variable diameter section adopts a gradually changing inner diameter, the thickness at the location of the positioning hole is gradually reduced. This can form a clearance with the outer periphery of the crucible while ensuring structural strength, and prevent the constant diameter section from deforming due to heat. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a structural schematic diagram of the support component of this application; Figure 2 This is a top view of the support component of this application; Figure 3 This is a schematic diagram of the crucible mounted on the support. Figure 4 yes Figure 2 AA view; Figure 5 yes Figure 2 Enlarged view of point B in the middle; Figure 6 yes Figure 1 Enlarged view of point A in the middle; The annotations in the attached figures are explained as follows: 100. Support component; 101. Support part; 102. Positioning plate; 103. Positioning hole; 104. Upper end face of the positioning hole; 105. Clearance area; 106. Mounting area; 107. Clearance hole; 108. Notch; 109. Inner groove; L1. Constant diameter section; L2. Variable diameter section; 200. Crucible; 201. Flange. Detailed Implementation

[0017] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0018] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0019] This embodiment discloses a support member for a crucible. The support member 100 of this embodiment can be used to support and position the crucible 200. First, the support member 100 of this embodiment will be explained.

[0020] like Figure 1 As shown, the support member 100 in this embodiment includes a support part 101 and a positioning disk 102. One end of the support part 101 is connected to the positioning disk 102 and is used to support the positioning disk 102 in the height direction. The positioning disk 102 is used for supporting and positioning the crucible 200.

[0021] like Figure 1As shown, the support part 101 includes a support rod, which is vertically arranged. The upper end of the support rod is coaxially connected to the positioning disk 102. In this embodiment, the support rod and the positioning disk 102 are made of the same material, such as ceramic or quartz, which does not deform or deforms only slightly at high temperatures, and therefore can be reused. In some preferred embodiments, the support rod can be configured as a telescopic structure, and the specific telescopic form can refer to the sleeve telescopic structure in the prior art.

[0022] like Figure 2 As shown, the positioning disk 102 is disc-shaped, and its upper surface is divided into two areas: a clearance area 105 and an installation area 106. Figure 2 The two dotted ring lines in the middle indicate the boundary between the clearance zone 105 and the mounting zone 106. The mounting zone 106 is located at the edge of the positioning disk 102, and the clearance zone 105 is located at the center of the positioning disk 102. The mounting zone 106 is annular and coaxially surrounds the clearance zone 105. The mounting zone 106 is used for the support and positioning of the crucible 200.

[0023] like Figure 2 As shown, the clearance zone 105 is provided with multiple clearance holes 107, which penetrate the positioning disk 102 along its thickness direction. The multiple clearance holes 107 are arrayed within the clearance zone 105. In this embodiment, the design of the clearance holes 107 achieves weight reduction on one hand, and on the other hand, because the multiple clearance holes 107 form hollow sections, they reduce the heat absorption of the positioning disk 102 itself, thereby preventing the coal sample from being heated for an extended period.

[0024] like Figure 1 and Figure 3 As shown, the mounting area 106 in this embodiment is provided with a plurality of positioning holes 103. The positioning holes 103 penetrate the positioning disk 102 along the thickness direction of the positioning disk 102, and the plurality of positioning holes 103 are spaced apart along the circumferential direction of the positioning disk 102. Among them, the crucibles 200 are respectively disposed in the positioning holes 103. The outer circumference of the crucible 200 is provided with an annular flange 201. The upper opening end face 104 of the positioning hole can fit and contact the lower surface of the flange 201, and support the crucible 200 in the height direction to prevent the crucible 200 from falling. It can be understood that the upper opening end face 104 of the positioning hole is part of the upper surface of the positioning disk 102.

[0025] like Figure 4As shown, in the thickness direction (i.e., the height direction) of the positioning disk 102, the positioning hole 103 includes two sections, an equal-diameter section L1 and a variable-diameter section L2. The equal-diameter section L1 is circular, and its inner diameter φ2 is 1 to 1.5 times the outer diameter of the crucible 200. In some preferred embodiments, the inner diameter φ2 of the equal-diameter section L1 is 1 to 1.2 times the outer diameter of the crucible 200. In this embodiment, the inner diameter φ2 of the equal-diameter section L1 is slightly larger than the outer diameter of the crucible 200 to facilitate the placement of the crucible 200 within the equal-diameter section L1. The outer diameter of the flange 201 on the outer circumference of the crucible 200 is larger than the inner diameter φ2 of the equal-diameter section L1 to prevent the crucible 200 from falling downwards.

[0026] like Figure 4 As shown, the inner diameter of the variable diameter section L2 gradually increases downwards. Specifically, the inner circumference of the variable diameter section L2 is conical, and the inner diameter of the variable diameter section L2 gradually increases in the direction away from the constant diameter section L1. In this embodiment, the variable diameter section L2 has a minimum inner diameter φ1 and a maximum outer diameter φ3. The minimum inner diameter φ1 of the variable diameter section L2 is equal to the inner diameter φ2 of the constant diameter section L1, and the maximum inner diameter φ3 of the variable diameter section L2 is 1.1 to 1.5 times the minimum inner diameter φ1 of the variable diameter section L2, preferably 1.2 times.

[0027] In this embodiment, since the inner diameter of the variable diameter section L2 gradually increases downward, a clearance is formed between the inner peripheral wall of the variable diameter section L2 and the outer peripheral surface of the crucible 200, which can reduce the time for heat to be conducted into the crucible 200.

[0028] like Figure 5 As shown, in some preferred embodiments, the inner peripheral wall of the positioning hole 103 is connected to the outer circumference of the positioning disk 102 through a notch 108. Figure 5 The dotted line in the diagram represents the notch 108. Specifically, at least a portion of the inner peripheral wall of the positioning hole 103 extends radially from the positioning disk 102 to the outer circumference of the positioning disk 102, resulting in a U-shaped positioning hole 103 in plan view. In this embodiment, the notch 108 on the positioning disk 102, making the positioning hole 103 an incomplete circle, further reduces the area of ​​the positioning disk 102 covering the outer circumference of the crucible 200, thus preventing obstruction of heat transfer.

[0029] like Figure 6 As shown, in some preferred embodiments, an inner groove 109 is provided on the inner peripheral wall of the positioning hole 103; the inner groove 109 is formed by recessing in a direction away from the axis of the positioning hole 103 in the radial direction of the positioning disk 102. It can be understood that the depth direction of the inner groove 109 is perpendicular to the axis of the positioning hole 103. By providing the inner groove 109, the area of ​​the inner peripheral wall of the positioning hole 103 covering the outer periphery of the crucible 200 can be further reduced, thereby avoiding obstruction of heat transfer.

[0030] Please refer to it again. Figure 5 In some preferred embodiments, there are multiple recesses 109, which are spaced apart circumferentially along the positioning hole 103. The design of multiple recesses 109 can increase the clearance area.

[0031] like Figure 6 As shown, in some preferred embodiments, the inner groove 109 is preferably a through groove, specifically, the inner groove 109 extends through the upper surface and the lower surface of the positioning disk 102 along the thickness direction of the positioning disk 102. The inner groove 109 is preferably a through groove, which can increase the heat conduction channel, rapidly conducting heat from the inner groove 109 to the vicinity of the outer peripheral surface of the crucible 200, thus reducing the heat conduction time.

[0032] In this embodiment, a heating device is also disclosed, comprising a high-temperature furnace and a support member 100. The high-temperature furnace can be based on existing equipment and will not be described in detail here. The high-temperature furnace includes a heating chamber for heating the crucible 200 and the coal sample within it. The support member 100 is disposed within the heating chamber and includes a support portion 101 and a positioning plate 102 disposed on the support portion 101. The lower end of the support portion 101 is connected to the high-temperature furnace, and the positioning plate 102 and at least a portion of the support portion 101 are located within the heating chamber. The heating device of this embodiment ensures rapid heat transfer to the coal sample, improving testing efficiency.

[0033] The above description is merely a specific implementation of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A support for a crucible, characterized in that, The support member (100) includes a support part (101) and a positioning disk (102) disposed on the support part (101). The positioning disk (102) is provided with a positioning hole (103) fitted on the outer circumference of the crucible (200). The upper end face (104) of the positioning hole is used to support the flange (201) of the crucible (200). In the thickness direction of the positioning disk (102), the positioning hole (103) includes an equal diameter section (L1) and a variable diameter section (L2) connected to each other. The inner diameter of the variable diameter section (L2) gradually increases in the direction away from the equal diameter section (L1).

2. The support member according to claim 1, characterized in that, The support part (101) includes a support rod, one end of which is coaxially connected to the positioning disk (102).

3. The support member according to claim 1, characterized in that, The upper surface of the positioning disk (102) includes a clearance area (105) and an installation area (106). The installation area (106) surrounds the outer periphery of the installation area (106). The clearance area (105) is provided with a plurality of clearance holes (107) that penetrate the positioning disk (102). The installation area (106) is provided with a plurality of positioning holes (103) that are spaced apart along the circumference of the positioning disk (102).

4. The support member according to claim 3, characterized in that, The inner circumferential wall of the positioning hole (103) is connected to the outer circumference of the positioning disk (102) through a notch (108).

5. The support member according to claim 1, characterized in that, The inner diameter of the equal diameter section (L1) is 1 to 1.2 times the outer diameter of the crucible (200).

6. The support member according to claim 5, characterized in that, The maximum inner diameter (φ3) of the variable diameter section is 1.1 to 1.5 times the minimum inner diameter (φ1) of the variable diameter section.

7. The support member according to any one of claims 1 to 6, characterized in that, The inner peripheral wall of the positioning hole (103) is provided with an inner groove (109), which is recessed in a direction away from the axis of the positioning hole (103).

8. The support member according to claim 7, characterized in that, There are multiple inner grooves (109), and multiple inner grooves (109) are arranged circumferentially along the positioning hole (103).

9. The support member according to claim 8, characterized in that, Along the thickness direction of the positioning disk (102), the inner groove (109) connects the upper surface of the positioning disk (102) and the lower surface of the positioning disk (102).

10. The support member according to claim 1, characterized in that, The minimum inner diameter (φ1) of the variable diameter section is equal to the inner diameter (φ2) of the constant diameter section. The inner diameter of the constant diameter section (L1) is 1 to 1.5 times the outer diameter of the crucible (200).

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