Crucible holder for muffle furnace

Abstract

The utility model relates to the technical field of coal quality detection auxiliary equipment, in particular to a crucible rack for a muffle furnace, which comprises a crucible placing layer and a crucible bearing layer positioned below the crucible placing layer, the crucible bearing layer and the crucible placing layer are connected and fixed through support frames arranged at two ends of the crucible bearing layer, the crucible placing layer comprises at least one placing part, and the crucible placing part is arranged on the crucible bearing layer. The placing part comprises two transverse rods, two longitudinal rods and at least one sliding rod, the two longitudinal rods are arranged at intervals in the length direction of the crucible bearing layer and are fixed to the two supporting frames respectively, the two transverse rods are arranged at intervals in the width direction of the crucible bearing layer, the two ends of the two transverse rods are fixedly connected with the two longitudinal rods respectively, and the sliding rod is arranged between the two transverse rods. Hooks are arranged at the two ends of the sliding rod, the hooks are arranged on the transverse rod in a sliding and buckling mode, a hole used for containing a crucible is defined by the sliding rod, the transverse rod and the longitudinal rod, and the crucible bearing layer is used for bearing the crucible placed in the hole. The crucible rack can be used for placing stacked crucibles, so that the utilization rate of the space in the muffle furnace is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal quality detection auxiliary equipment, in particular to a crucible stand for a muffle furnace. Background Art

[0002] The chemical composition of coal includes two major categories: organic matter and inorganic matter. Inorganic matter consists of water and minerals. A high inorganic content reduces the utilization value of coal. Industrial analysis can provide a general understanding of the composition and content of coal, thereby roughly determining the type and purpose of the coal. When testing coal samples, a certain amount of coal sample is generally weighed in a crucible and placed in a muffle furnace for testing. Among them, the crucible is a cup-shaped container commonly used in laboratories. It is conical in shape and is used to hold test samples to be heated; the crucible stand is a device for holding crucibles; and the muffle furnace is a commonly used test equipment in experimental operations. The muffle furnace burning operation is a method of placing the vessel or sample to be tested in the muffle furnace for burning.

[0003] Currently, patent publication number CN218238400U discloses a retractable double-layer crucible stand for a muffle furnace. During use, the crucible is placed upright within a circular ring, supported by a lower support layer. Finally, the crucible stand with the crucible is placed in the muffle furnace for heating and burning. After the coal sample test is completed, a layer of residue will adhere to the crucible, so the crucible must be placed back into the muffle furnace to burn and clean the residue. However, the crucible does not need to remain upright within the muffle furnace at this point.

[0004] However, the above-mentioned existing crucible rack cannot accommodate the stacked crucibles, and thus the stacked crucibles cannot be placed in the muffle furnace, resulting in low space utilization in the muffle furnace. Utility Model Content

[0005] One of the purposes of the utility model is to provide a crucible stand for a muffle furnace, which aims to solve the technical problem that the existing crucible stand cannot accommodate stacked crucibles, and thus the stacked crucibles cannot be placed in the muffle furnace, resulting in low space utilization in the muffle furnace.

[0006] The cam is secured to the bottom of the support frame and is adapted to engage the bottom bracket of the crucible, wherein the cam is secured to the bottom of the support frame and is adapted to engage the bottom bracket of the crucible.

[0007] Furthermore, there are two placement parts, and each placement part has two sliding rods.

[0008] Furthermore, the crucible supporting layer includes two connecting rods and at least one group of supporting components, the two connecting rods are respectively fixed on two support frames, each connecting rod is located directly below each longitudinal rod, and the two ends of the supporting component are respectively connected and fixed to the two connecting rods, and the supporting component is arranged directly below the corresponding hole.

[0009] Furthermore, the supporting components are provided in two groups, one group of the supporting components is located below the hole of one of the placement parts, and the other group of the supporting components is located below the hole of the other placement part.

[0010] Furthermore, each of the supporting assemblies includes a first supporting rod, and both ends of the first supporting rod are respectively connected and fixed to two connecting rods.

[0011] Furthermore, each of the supporting assemblies also includes a second supporting rod, the two ends of which are respectively connected and fixed to two connecting rods, the second supporting rod and the first supporting rod are spaced apart, and the distance between the second supporting rod and the first supporting rod is smaller than the outer diameter of the crucible.

[0012] Furthermore, each of the support frames includes two support legs, and each of the four support legs is fixedly connected to one of the four corners of the crucible supporting layer.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] When the crucible stand of the utility model is in use, during the coal sample test process, when the crucible needs to be placed upright on the crucible stand, the sliding rod is manually slid and moved to the middle position of the cross bar, so that the sliding rod, the cross bar and the vertical rod are enclosed to form a first hole suitable for placing the crucible in the upright state; after the coal sample test is completed, when the stacked crucible needs to be placed on the crucible stand, the sliding rod is manually slid and moved to the end of one end of the cross bar, so that the sliding rod, the cross bar and the vertical rod are enclosed to form a second hole suitable for placing the stacked crucibles. Above the second hole, The two ends of the stacked crucibles are respectively placed on the sliding rod and the longitudinal rod. The overall length of the stacked crucibles is greater than the length of the second hole. At this time, the crucible in the middle of the stacked crucibles will sink under its own gravity to be supported by the crucible supporting layer. In this way, the stacked crucibles can be placed on the crucible rack, so that the crucible rack of the utility model can stack multiple crucibles to be calcined together after being calcined, making full use of the space inside the muffle furnace, improving the utilization rate of the space inside the muffle furnace, and increasing the amount of crucibles burned each time entering the muffle furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the structure of the crucible stand in the first working condition according to the embodiment;

[0016] Figure 2 for Figure 1 A structural diagram from another angle;

[0017] Figure 3 A top view of the crucible stand in the embodiment with the crucible placed thereon in the first working condition;

[0018] Figure 4 for Figure 2 Another structural schematic diagram of;

[0019] Figure 5 Schematic diagram of the structure of the crucible stand in the second working condition according to the embodiment;

[0020] Figure 6 for Figure 5 A structural diagram from another angle;

[0021] Figure 7 FIG. 1 is a top view of the crucible stand in the second working condition in which stacked crucibles are placed in a collapsed state in an embodiment. FIG.

[0022] Reference numerals in the accompanying drawings:

[0023] 1. Support frame; 10. Support foot; 2. Crucible supporting layer; 20. Connecting rod; 21. Support assembly; 211. First supporting rod; 212. Second supporting rod; 3. Crucible placement layer; 30. Placement portion; 301. Horizontal rod; 302. Vertical rod; 303. Sliding rod; 3031. Hook; 4. Crucible; 5. First hole; 6. Second hole. DETAILED DESCRIPTION

[0024] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] In the description of the present invention, it should be understood that the terms "width", "up", "down", "front", "back", "top", "bottom", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections, direct connections, or indirect connections through an intermediate medium; they may refer to internal communication between two components or the interaction between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0027] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0028] Please refer to Figure 1 - Figure 7 The utility model provides a crucible stand for a muffle furnace, comprising a support frame 1, a crucible supporting layer 2 and a crucible placement layer 3. The crucible placement layer 3 is located above the crucible supporting layer 2. The crucible supporting layer 2 and the crucible placement layer 3 are connected and fixed by support frames 1 arranged at both ends thereof.

[0029] Reference Figure 1 and Figure 4 Each support frame 1 includes two interconnected support legs 10, and each of the four corners of the crucible supporting layer 2 is connected and fixed with a support leg 10.

[0030] Reference Figure 1 、 Figure 2 、 Figure 5 and Figure 6 The crucible placement layer 3 includes at least one placement portion 30. In this embodiment, there are two placement portions 30, each placement portion 30 includes two cross bars 301, two longitudinal bars 302 and multiple sliding bars 303. There are two sliding bars 303 in each placement portion 30, and the two longitudinal bars 302 are spaced apart along the length direction of the crucible supporting layer 2; the two longitudinal bars 302 are respectively fixed on the two support frames 1, specifically, the opposite ends of the longitudinal bar 302 on the left are connected and fixed to the two support legs 10 on the left, and the opposite ends of the longitudinal bar 302 on the right are connected and fixed to the two support legs 10 on the right.

[0031] In addition, two cross bars 301 are arranged at intervals along the width direction of the crucible supporting layer 2, and the two ends of the two cross bars 301 are respectively connected and fixed to the two longitudinal bars 302. The two ends of the sliding bar 303 are provided with hooks 3031, and the two hooks 3031 on the sliding bar 303 are respectively slidably buckled on the two cross bars 301. The sliding bar 303, the cross bar 301 and the longitudinal bar 302 enclose a hole for placing the crucible 4, and the crucible supporting layer 2 is used to support the crucible 4 placed in the hole.

[0032] Reference Figure 1 、 Figure 2 、 Figure 5 and Figure 6 The crucible supporting layer 2 includes two connecting rods 20 and at least one group of supporting assemblies 21. The two connecting rods 20 are respectively fixed on the two support frames 1. Specifically, the opposite ends of the connecting rod 20 on the left are respectively connected and fixed to the two supporting feet 10 on the left, and the opposite ends of the connecting rod 20 on the right are respectively connected and fixed to the two supporting feet 10 on the right. Of course, each connecting rod 20 is located directly below each longitudinal rod 302, and the two ends of the supporting assembly 21 are respectively connected and fixed to the two connecting rods 20, and the supporting assembly 21 is set directly below the corresponding hole. Specifically, there are also two groups of supporting assemblies 21, one group of supporting assemblies 21 is located below the hole of one of the placement parts 30, and the other group of supporting assemblies 21 is located below the hole of the other placement part 30.

[0033] Reference Figure 1 、 Figure 2 、 Figure 5 and Figure 6The support assembly 21 includes a first support rod 211 and a second support rod 212. The first support rod 211 is fixedly connected to the two connecting rods 20 at both ends. The second support rod 212 is fixedly connected to the two connecting rods 20 at both ends. The second support rod 212 is spaced apart from the first support rod 211. The spacing between the second support rod 212 and the first support rod 211 is smaller than the outer diameter of the crucible 4. The combination of the first support rod 211 and the second support rod 212 increases the support force of the support assembly 21 on the crucible 4.

[0034] The crucible stand of the utility model is used with reference to Figure 1 - Figure 3 During the coal sample test (first working condition), when the crucible 4 needs to be placed upright on the crucible stand, the slide bar 303 is manually slid to spread out the multiple slide bars 303 on the cross bar 301, so that the slide bars 303, the cross bar 301 and the vertical bar 302 enclose a first hole 5 suitable for placing the crucible 4 in an upright state; Figure 5 - Figure 7 After the coal sample test is completed (second working condition), when the stacked crucibles 4 need to be placed on the crucible stand, the slide bar 303 is manually slid to move the slide bar 303 to the end on the left side of the horizontal bar 301, so that the slide bar 303, the horizontal bar 301 and the vertical bar 302 are enclosed to form a second hole 6 suitable for placing the stacked crucibles 4. Above the second hole 6, the two ends of the stacked crucibles 4 are respectively placed on the horizontal bar 301 on the left and the vertical bar 302 on the right. The overall length of the crucible 4 is greater than the length of the second hole 6. At this time, the middle crucible 4 of the stacked crucibles 4 will sink under its own gravity to be supported by the crucible supporting layer 2. In this way, the stacked crucibles 4 can be placed on the crucible rack, so that the crucible rack of the present invention can stack and place multiple crucibles 4 to be burned in the muffle furnace after they are laid down, making full use of the space inside the muffle furnace, improving the utilization rate of the space inside the muffle furnace, and increasing the amount of crucible 4 burned each time it enters the muffle furnace.

[0035] What needs to be strengthened is that the crucible after being laid down and stacked refers to a plurality of crucibles 4 stacked in sequence in a laid down state.

[0036] It should be noted that, in the first hole 5, the sliding connection between the hook 3031 on the slide rod 303 and the cross bar 301 makes the static friction between the slide rod 303 and the cross bar 301 greater than the force acting on the crucible 4 on the slide rod 303, so that the slide rod 303 can prevent the crucible 4 from tipping over in the first hole 5.

[0037] In summary, after the test is completed, when the crucible 4 is burned to clean the residue on its inner wall, the crucibles 4 can be laid down and stacked in batches, placed on this crucible rack, and then placed in the muffle furnace, which increases the number of crucibles 4 processed in batches per unit time, thereby increasing the space utilization rate in the muffle furnace.

[0038] It should be noted that, in one embodiment, when the crucible stand of the present invention is used, the sizes of the first holes 5 are the same. Of course, in other embodiments, the sizes of the first holes 5 can be adjusted to be different by adjusting the different positions of the sliding rod 303 on the cross bar 301, thereby being suitable for standing crucibles 4 of different specifications, thereby improving the applicability of the crucible stand of the present invention.

[0039] As an application scenario, when the slide bar 303 is spread out on the cross bar 301, six first holes 5 are formed on the crucible stand, that is, three first holes 5 are formed on each placement portion 30, so that six crucibles 4 can be placed upright on the crucible stand; when the slide bar 303 is moved to the left end or right end of the cross bar 301, only two second holes 6 are formed on the crucible stand, that is, one second hole 6 is formed on each placement portion 30, and in one second hole 6, as shown in FIG. Figure 7 As shown, the number of crucibles 4 placed after being laid down and stacked is 6, so that 12 crucibles 4 can be placed on the crucible rack. In this way, for crucible racks of the same size, the number of crucibles 4 placed on the crucible rack after being laid down and stacked is twice the number of crucibles 4 placed upright on the crucible rack, thereby increasing the number of crucibles 4 that can be batch processed per unit time and improving the space utilization rate within the muffle furnace.

[0040] It should be noted that, due to the limited space in the muffle furnace, the size of the crucible stand is usually only able to accommodate 6 upright crucibles 4, that is, there are only 6 first holes 5 on the crucible stand. Figure 3 shown.

[0041] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A crucible stand for a muffle furnace, comprising a crucible placement layer, a crucible support layer and a support frame, wherein the crucible placement layer is located above the crucible support layer, and the crucible support layer and the crucible placement layer are connected and fixed by the support frames provided at both ends thereof, characterized in that: The crucible placement layer includes at least one placement part, and the placement part includes two cross bars, two longitudinal bars and multiple sliding bars. The two longitudinal bars are arranged at intervals along the length direction of the crucible supporting layer, and the two longitudinal bars are respectively fixed on two support frames. The two cross bars are arranged at intervals along the width direction of the crucible supporting layer, and the two ends of the two cross bars are respectively connected and fixed to the two longitudinal bars. The two ends of the sliding bar are provided with hooks, and the two hooks are respectively slidably buckled on the two cross bars. The sliding bar, cross bar and longitudinal bar enclose a hole for placing the crucible, and the crucible supporting layer is used to support the crucible placed in the hole.

2. A crucible stand for a muffle furnace according to claim 1, characterized in that: There are two placing parts, and each placing part has two sliding rods.

3. A crucible stand for a muffle furnace according to claim 2, characterized in that: The crucible supporting layer includes two connecting rods and at least one group of supporting components. The two connecting rods are respectively fixed on two support frames. Each connecting rod is located directly below each longitudinal rod. The two ends of the supporting component are respectively connected and fixed to the two connecting rods. The supporting component is arranged directly below the corresponding hole.

4. A crucible stand for a muffle furnace according to claim 3, characterized in that: The supporting components are provided in two groups, one group of the supporting components is located below the hole of one of the placement parts, and the other group of the supporting components is located below the hole of the other placement part.

5. A crucible stand for a muffle furnace according to claim 3 or 4, characterized in that: Each of the supporting assemblies includes a first supporting rod, and both ends of the first supporting rod are respectively connected and fixed to two connecting rods.

6. The crucible stand for a muffle furnace according to claim 5, characterized in that: Each of the supporting assemblies further includes a second supporting rod, the two ends of which are respectively connected and fixed to two connecting rods, the second supporting rod and the first supporting rod are spaced apart, and the distance between the second supporting rod and the first supporting rod is smaller than the outer diameter of the crucible.

7. The crucible stand for a muffle furnace according to claim 1, wherein: Each of the support frames comprises two support legs, and each of the four corners of the crucible supporting layer is fixedly connected to a support leg.

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